/src/haproxy/src/cfgparse.c

Source (jump to first uncovered line)
/*
 * Configuration parser
 *
 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 *
 */

/* This is to have crypt() and sched_setaffinity() defined on Linux */
#define _GNU_SOURCE

#ifdef USE_LIBCRYPT
#ifdef USE_CRYPT_H
/* some platforms such as Solaris need this */
#include <crypt.h>
#endif
#endif /* USE_LIBCRYPT */

#include <dirent.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <netdb.h>
#include <ctype.h>
#include <pwd.h>
#include <grp.h>
#include <errno.h>
#ifdef USE_CPU_AFFINITY
#include <sched.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

#include <haproxy/acl.h>
#include <haproxy/action.h>
#include <haproxy/api.h>
#include <haproxy/arg.h>
#include <haproxy/auth.h>
#include <haproxy/backend.h>
#include <haproxy/capture.h>
#include <haproxy/cfgcond.h>
#include <haproxy/cfgparse.h>
#include <haproxy/channel.h>
#include <haproxy/check.h>
#include <haproxy/chunk.h>
#include <haproxy/clock.h>
#ifdef USE_CPU_AFFINITY
#include <haproxy/cpuset.h>
#endif
#include <haproxy/connection.h>
#include <haproxy/errors.h>
#include <haproxy/filters.h>
#include <haproxy/frontend.h>
#include <haproxy/global.h>
#include <haproxy/http_ana.h>
#include <haproxy/http_rules.h>
#include <haproxy/lb_chash.h>
#include <haproxy/lb_fas.h>
#include <haproxy/lb_fwlc.h>
#include <haproxy/lb_fwrr.h>
#include <haproxy/lb_map.h>
#include <haproxy/listener.h>
#include <haproxy/log.h>
#include <haproxy/sink.h>
#include <haproxy/mailers.h>
#include <haproxy/namespace.h>
#include <haproxy/quic_sock.h>
#include <haproxy/obj_type-t.h>
#include <haproxy/openssl-compat.h>
#include <haproxy/peers-t.h>
#include <haproxy/peers.h>
#include <haproxy/pool.h>
#include <haproxy/protocol.h>
#include <haproxy/proxy.h>
#include <haproxy/resolvers.h>
#include <haproxy/sample.h>
#include <haproxy/server.h>
#include <haproxy/session.h>
#include <haproxy/stats-t.h>
#include <haproxy/stick_table.h>
#include <haproxy/stream.h>
#include <haproxy/task.h>
#include <haproxy/tcp_rules.h>
#include <haproxy/tcpcheck.h>
#include <haproxy/thread.h>
#include <haproxy/tools.h>
#include <haproxy/uri_auth-t.h>


/* Used to chain configuration sections definitions. This list
 * stores struct cfg_section
 */
struct list sections = LIST_HEAD_INIT(sections);

struct list postparsers = LIST_HEAD_INIT(postparsers);

extern struct proxy *mworker_proxy;

/* curproxy is only valid during parsing and will be NULL afterwards. */
struct proxy *curproxy = NULL;

char *cursection = NULL;
int cfg_maxpconn = 0;                   /* # of simultaneous connections per proxy (-N) */
int cfg_maxconn = 0;      /* # of simultaneous connections, (-n) */
char *cfg_scope = NULL;                 /* the current scope during the configuration parsing */
int non_global_section_parsed = 0;

/* how to handle default paths */
static enum default_path_mode {
  DEFAULT_PATH_CURRENT = 0,  /* "current": paths are relative to CWD (this is the default) */
  DEFAULT_PATH_CONFIG,       /* "config": paths are relative to config file */
  DEFAULT_PATH_PARENT,       /* "parent": paths are relative to config file's ".." */
  DEFAULT_PATH_ORIGIN,       /* "origin": paths are relative to default_path_origin */
} default_path_mode;

static char initial_cwd[PATH_MAX];
static char current_cwd[PATH_MAX];

/* List head of all known configuration keywords */
struct cfg_kw_list cfg_keywords = {
  .list = LIST_HEAD_INIT(cfg_keywords.list)
};

/*
 * converts <str> to a list of listeners which are dynamically allocated.
 * The format is "{addr|'*'}:port[-end][,{addr|'*'}:port[-end]]*", where :
 *  - <addr> can be empty or "*" to indicate INADDR_ANY ;
 *  - <port> is a numerical port from 1 to 65535 ;
 *  - <end> indicates to use the range from <port> to <end> instead (inclusive).
 * This can be repeated as many times as necessary, separated by a coma.
 * Function returns 1 for success or 0 if error. In case of errors, if <err> is
 * not NULL, it must be a valid pointer to either NULL or a freeable area that
 * will be replaced with an error message.
 */
int str2listener(char *str, struct proxy *curproxy, struct bind_conf *bind_conf, const char *file, int line, char **err)
{
  struct protocol *proto;
  char *next, *dupstr;
  int port, end;

  next = dupstr = strdup(str);

  while (next && *next) {
    struct sockaddr_storage *ss2;
    int fd = -1;

    str = next;
    /* 1) look for the end of the first address */
    if ((next = strchr(str, ',')) != NULL) {
      *next++ = 0;
    }

    ss2 = str2sa_range(str, NULL, &port, &end, &fd, &proto, NULL, err,
                       (curproxy == global.cli_fe || curproxy == mworker_proxy) ? NULL : global.unix_bind.prefix,
                       NULL, PA_O_RESOLVE | PA_O_PORT_OK | PA_O_PORT_MAND | PA_O_PORT_RANGE |
                              PA_O_SOCKET_FD | PA_O_STREAM | PA_O_XPRT);
    if (!ss2)
      goto fail;

    if (ss2->ss_family == AF_CUST_REV_SRV) {
      /* Check if a previous non reverse HTTP present is
       * already defined. If DGRAM or STREAM is set, this
       * indicates that we are currently parsing the second
       * or more address.
       */
      if (bind_conf->options & (BC_O_USE_SOCK_DGRAM|BC_O_USE_SOCK_STREAM) &&
          !(bind_conf->options & BC_O_REVERSE_HTTP)) {
        memprintf(err, "Cannot mix reverse HTTP bind with others.\n");
        goto fail;
      }

      bind_conf->reverse_srvname = strdup(str + strlen("rhttp@"));
      if (!bind_conf->reverse_srvname) {
        memprintf(err, "Cannot allocate reverse HTTP bind.\n");
        goto fail;
      }

      bind_conf->options |= BC_O_REVERSE_HTTP;
    }
    else if (bind_conf->options & BC_O_REVERSE_HTTP) {
      /* Standard address mixed with a previous reverse HTTP one. */
      memprintf(err, "Cannot mix reverse HTTP bind with others.\n");
      goto fail;
    }

    /* OK the address looks correct */
    if (proto->proto_type == PROTO_TYPE_DGRAM)
      bind_conf->options |= BC_O_USE_SOCK_DGRAM;
    else
      bind_conf->options |= BC_O_USE_SOCK_STREAM;

    if (proto->xprt_type == PROTO_TYPE_DGRAM)
      bind_conf->options |= BC_O_USE_XPRT_DGRAM;
    else
      bind_conf->options |= BC_O_USE_XPRT_STREAM;

    if (!create_listeners(bind_conf, ss2, port, end, fd, proto, err)) {
      memprintf(err, "%s for address '%s'.\n", *err, str);
      goto fail;
    }
  } /* end while(next) */
  free(dupstr);
  return 1;
 fail:
  free(dupstr);
  return 0;
}

/*
 * converts <str> to a list of datagram-oriented listeners which are dynamically
 * allocated.
 * The format is "{addr|'*'}:port[-end][,{addr|'*'}:port[-end]]*", where :
 *  - <addr> can be empty or "*" to indicate INADDR_ANY ;
 *  - <port> is a numerical port from 1 to 65535 ;
 *  - <end> indicates to use the range from <port> to <end> instead (inclusive).
 * This can be repeated as many times as necessary, separated by a coma.
 * Function returns 1 for success or 0 if error. In case of errors, if <err> is
 * not NULL, it must be a valid pointer to either NULL or a freeable area that
 * will be replaced with an error message.
 */
int str2receiver(char *str, struct proxy *curproxy, struct bind_conf *bind_conf, const char *file, int line, char **err)
{
  struct protocol *proto;
  char *next, *dupstr;
  int port, end;

  next = dupstr = strdup(str);

  while (next && *next) {
    struct sockaddr_storage *ss2;
    int fd = -1;

    str = next;
    /* 1) look for the end of the first address */
    if ((next = strchr(str, ',')) != NULL) {
      *next++ = 0;
    }

    ss2 = str2sa_range(str, NULL, &port, &end, &fd, &proto, NULL, err,
                       curproxy == global.cli_fe ? NULL : global.unix_bind.prefix,
                       NULL, PA_O_RESOLVE | PA_O_PORT_OK | PA_O_PORT_MAND | PA_O_PORT_RANGE |
                              PA_O_SOCKET_FD | PA_O_DGRAM | PA_O_XPRT);
    if (!ss2)
      goto fail;

    /* OK the address looks correct */
    if (!create_listeners(bind_conf, ss2, port, end, fd, proto, err)) {
      memprintf(err, "%s for address '%s'.\n", *err, str);
      goto fail;
    }
  } /* end while(next) */
  free(dupstr);
  return 1;
 fail:
  free(dupstr);
  return 0;
}

/*
 * Sends a warning if proxy <proxy> does not have at least one of the
 * capabilities in <cap>. An optional <hint> may be added at the end
 * of the warning to help the user. Returns 1 if a warning was emitted
 * or 0 if the condition is valid.
 */
int warnifnotcap(struct proxy *proxy, int cap, const char *file, int line, const char *arg, const char *hint)
{
  char *msg;

  switch (cap) {
  case PR_CAP_BE: msg = "no backend"; break;
  case PR_CAP_FE: msg = "no frontend"; break;
  case PR_CAP_BE|PR_CAP_FE: msg = "neither frontend nor backend"; break;
  default: msg = "not enough"; break;
  }

  if (!(proxy->cap & cap)) {
    ha_warning("parsing [%s:%d] : '%s' ignored because %s '%s' has %s capability.%s\n",
         file, line, arg, proxy_type_str(proxy), proxy->id, msg, hint ? hint : "");
    return 1;
  }
  return 0;
}

/*
 * Sends an alert if proxy <proxy> does not have at least one of the
 * capabilities in <cap>. An optional <hint> may be added at the end
 * of the alert to help the user. Returns 1 if an alert was emitted
 * or 0 if the condition is valid.
 */
int failifnotcap(struct proxy *proxy, int cap, const char *file, int line, const char *arg, const char *hint)
{
  char *msg;

  switch (cap) {
  case PR_CAP_BE: msg = "no backend"; break;
  case PR_CAP_FE: msg = "no frontend"; break;
  case PR_CAP_BE|PR_CAP_FE: msg = "neither frontend nor backend"; break;
  default: msg = "not enough"; break;
  }

  if (!(proxy->cap & cap)) {
    ha_alert("parsing [%s:%d] : '%s' not allowed because %s '%s' has %s capability.%s\n",
       file, line, arg, proxy_type_str(proxy), proxy->id, msg, hint ? hint : "");
    return 1;
  }
  return 0;
}

/*
 * Report an error in <msg> when there are too many arguments. This version is
 * intended to be used by keyword parsers so that the message will be included
 * into the general error message. The index is the current keyword in args.
 * Return 0 if the number of argument is correct, otherwise build a message and
 * return 1. Fill err_code with an ERR_ALERT and an ERR_FATAL if not null. The
 * message may also be null, it will simply not be produced (useful to check only).
 * <msg> and <err_code> are only affected on error.
 */
int too_many_args_idx(int maxarg, int index, char **args, char **msg, int *err_code)
{
  int i;

  if (!*args[index + maxarg + 1])
    return 0;

  if (msg) {
    *msg = NULL;
    memprintf(msg, "%s", args[0]);
    for (i = 1; i <= index; i++)
      memprintf(msg, "%s %s", *msg, args[i]);

    memprintf(msg, "'%s' cannot handle unexpected argument '%s'.", *msg, args[index + maxarg + 1]);
  }
  if (err_code)
    *err_code |= ERR_ALERT | ERR_FATAL;

  return 1;
}

/*
 * same as too_many_args_idx with a 0 index
 */
int too_many_args(int maxarg, char **args, char **msg, int *err_code)
{
  return too_many_args_idx(maxarg, 0, args, msg, err_code);
}

/*
 * Report a fatal Alert when there is too much arguments
 * The index is the current keyword in args
 * Return 0 if the number of argument is correct, otherwise emit an alert and return 1
 * Fill err_code with an ERR_ALERT and an ERR_FATAL
 */
int alertif_too_many_args_idx(int maxarg, int index, const char *file, int linenum, char **args, int *err_code)
{
  char *kw = NULL;
  int i;

  if (!*args[index + maxarg + 1])
    return 0;

  memprintf(&kw, "%s", args[0]);
  for (i = 1; i <= index; i++) {
    memprintf(&kw, "%s %s", kw, args[i]);
  }

  ha_alert("parsing [%s:%d] : '%s' cannot handle unexpected argument '%s'.\n", file, linenum, kw, args[index + maxarg + 1]);
  free(kw);
  *err_code |= ERR_ALERT | ERR_FATAL;
  return 1;
}

/*
 * same as alertif_too_many_args_idx with a 0 index
 */
int alertif_too_many_args(int maxarg, const char *file, int linenum, char **args, int *err_code)
{
  return alertif_too_many_args_idx(maxarg, 0, file, linenum, args, err_code);
}


/* Report it if a request ACL condition uses some keywords that are incompatible
 * with the place where the ACL is used. It returns either 0 or ERR_WARN so that
 * its result can be or'ed with err_code. Note that <cond> may be NULL and then
 * will be ignored.
 */
int warnif_cond_conflicts(const struct acl_cond *cond, unsigned int where, const char *file, int line)
{
  const struct acl *acl;
  const char *kw;

  if (!cond)
    return 0;

  acl = acl_cond_conflicts(cond, where);
  if (acl) {
    if (acl->name && *acl->name)
      ha_warning("parsing [%s:%d] : acl '%s' will never match because it only involves keywords that are incompatible with '%s'\n",
           file, line, acl->name, sample_ckp_names(where));
    else
      ha_warning("parsing [%s:%d] : anonymous acl will never match because it uses keyword '%s' which is incompatible with '%s'\n",
           file, line, LIST_ELEM(acl->expr.n, struct acl_expr *, list)->kw, sample_ckp_names(where));
    return ERR_WARN;
  }
  if (!acl_cond_kw_conflicts(cond, where, &acl, &kw))
    return 0;

  if (acl->name && *acl->name)
    ha_warning("parsing [%s:%d] : acl '%s' involves keywords '%s' which is incompatible with '%s'\n",
         file, line, acl->name, kw, sample_ckp_names(where));
  else
    ha_warning("parsing [%s:%d] : anonymous acl involves keyword '%s' which is incompatible with '%s'\n",
         file, line, kw, sample_ckp_names(where));
  return ERR_WARN;
}

/* Report it if an ACL uses a L6 sample fetch from an HTTP proxy.  It returns
 * either 0 or ERR_WARN so that its result can be or'ed with err_code. Note that
 * <cond> may be NULL and then will be ignored.
*/
int warnif_tcp_http_cond(const struct proxy *px, const struct acl_cond *cond)
{
  if (!cond || px->mode != PR_MODE_HTTP)
    return 0;

  if (cond->use & (SMP_USE_L6REQ|SMP_USE_L6RES)) {
    ha_warning("Proxy '%s': L6 sample fetches ignored on HTTP proxies (declared at %s:%d).\n",
         px->id, cond->file, cond->line);
    return ERR_WARN;
  }
  return 0;
}

/* try to find in <list> the word that looks closest to <word> by counting
 * transitions between letters, digits and other characters. Will return the
 * best matching word if found, otherwise NULL. An optional array of extra
 * words to compare may be passed in <extra>, but it must then be terminated
 * by a NULL entry. If unused it may be NULL.
 */
const char *cfg_find_best_match(const char *word, const struct list *list, int section, const char **extra)
{
  uint8_t word_sig[1024]; // 0..25=letter, 26=digit, 27=other, 28=begin, 29=end
  uint8_t list_sig[1024];
  const struct cfg_kw_list *kwl;
  int index;
  const char *best_ptr = NULL;
  int dist, best_dist = INT_MAX;

  make_word_fingerprint(word_sig, word);
  list_for_each_entry(kwl, list, list) {
    for (index = 0; kwl->kw[index].kw != NULL; index++) {
      if (kwl->kw[index].section != section)
        continue;

      make_word_fingerprint(list_sig, kwl->kw[index].kw);
      dist = word_fingerprint_distance(word_sig, list_sig);
      if (dist < best_dist) {
        best_dist = dist;
        best_ptr = kwl->kw[index].kw;
      }
    }
  }

  while (extra && *extra) {
    make_word_fingerprint(list_sig, *extra);
    dist = word_fingerprint_distance(word_sig, list_sig);
    if (dist < best_dist) {
      best_dist = dist;
      best_ptr = *extra;
    }
    extra++;
  }

  if (best_dist > 2 * strlen(word) || (best_ptr && best_dist > 2 * strlen(best_ptr)))
    best_ptr = NULL;
  return best_ptr;
}

/* Parse a string representing a process number or a set of processes. It must
 * be "all", "odd", "even", a number between 1 and <max> or a range with
 * two such numbers delimited by a dash ('-'). On success, it returns
 * 0. otherwise it returns 1 with an error message in <err>.
 *
 * Note: this function can also be used to parse a thread number or a set of
 * threads.
 */
int parse_process_number(const char *arg, unsigned long *proc, int max, int *autoinc, char **err)
{
  if (autoinc) {
    *autoinc = 0;
    if (strncmp(arg, "auto:", 5) == 0) {
      arg += 5;
      *autoinc = 1;
    }
  }

  if (strcmp(arg, "all") == 0)
    *proc |= ~0UL;
  else if (strcmp(arg, "odd") == 0)
    *proc |= ~0UL/3UL; /* 0x555....555 */
  else if (strcmp(arg, "even") == 0)
    *proc |= (~0UL/3UL) << 1; /* 0xAAA...AAA */
  else {
    const char *p, *dash = NULL;
    unsigned int low, high;

    for (p = arg; *p; p++) {
      if (*p == '-' && !dash)
        dash = p;
      else if (!isdigit((unsigned char)*p)) {
        memprintf(err, "'%s' is not a valid number/range.", arg);
        return -1;
      }
    }

    low = high = str2uic(arg);
    if (dash)
      high = ((!*(dash+1)) ? max : str2uic(dash + 1));

    if (high < low) {
      unsigned int swap = low;
      low  = high;
      high = swap;
    }

    if (low < 1 || low > max || high > max) {
      memprintf(err, "'%s' is not a valid number/range."
          " It supports numbers from 1 to %d.\n",
          arg, max);
      return 1;
    }

    for (;low <= high; low++)
      *proc |= 1UL << (low-1);
  }
  *proc &= ~0UL >> (LONGBITS - max);

  return 0;
}

/* Allocate and initialize the frontend of a "peers" section found in
 * file <file> at line <linenum> with <id> as ID.
 * Return 0 if succeeded, -1 if not.
 * Note that this function may be called from "default-server"
 * or "peer" lines.
 */
static int init_peers_frontend(const char *file, int linenum,
                               const char *id, struct peers *peers)
{
  struct proxy *p;

  if (peers->peers_fe) {
    p = peers->peers_fe;
    goto out;
  }

  p = calloc(1, sizeof *p);
  if (!p) {
    ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
    return -1;
  }

  init_new_proxy(p);
  peers_setup_frontend(p);
  p->parent = peers;
  /* Finally store this frontend. */
  peers->peers_fe = p;

 out:
  if (id && !p->id)
    p->id = strdup(id);
  free(p->conf.file);
  p->conf.args.file = p->conf.file = strdup(file);
  if (linenum != -1)
    p->conf.args.line = p->conf.line = linenum;

  return 0;
}

/* Only change ->file, ->line and ->arg struct bind_conf member values
 * if already present.
 */
static struct bind_conf *bind_conf_uniq_alloc(struct proxy *p,
                                              const char *file, int line,
                                              const char *arg, struct xprt_ops *xprt)
{
  struct bind_conf *bind_conf;

  if (!LIST_ISEMPTY(&p->conf.bind)) {
    bind_conf = LIST_ELEM((&p->conf.bind)->n, typeof(bind_conf), by_fe);
    /*
     * We keep bind_conf->file and bind_conf->line unchanged
     * to make them available for error messages
     */
    if (arg) {
      free(bind_conf->arg);
      bind_conf->arg = strdup(arg);
    }
  }
  else {
    bind_conf = bind_conf_alloc(p, file, line, arg, xprt);
  }

  return bind_conf;
}

/*
 * Allocate a new struct peer parsed at line <linenum> in file <file>
 * to be added to <peers>.
 * Returns the new allocated structure if succeeded, NULL if not.
 */
static struct peer *cfg_peers_add_peer(struct peers *peers,
                                       const char *file, int linenum,
                                       const char *id, int local)
{
  struct peer *p;

  p = calloc(1, sizeof *p);
  if (!p) {
    ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
    return NULL;
  }

  /* the peers are linked backwards first */
  peers->count++;
  p->peers = peers;
  p->next = peers->remote;
  peers->remote = p;
  p->conf.file = strdup(file);
  p->conf.line = linenum;
  p->last_change = ns_to_sec(now_ns);
  p->xprt  = xprt_get(XPRT_RAW);
  p->sock_init_arg = NULL;
  HA_SPIN_INIT(&p->lock);
  if (id)
    p->id = strdup(id);
  if (local) {
    p->local = 1;
    peers->local = p;
  }

  return p;
}

/*
 * Parse a line in a <listen>, <frontend> or <backend> section.
 * Returns the error code, 0 if OK, or any combination of :
 *  - ERR_ABORT: must abort ASAP
 *  - ERR_FATAL: we can continue parsing but not start the service
 *  - ERR_WARN: a warning has been emitted
 *  - ERR_ALERT: an alert has been emitted
 * Only the two first ones can stop processing, the two others are just
 * indicators.
 */
int cfg_parse_peers(const char *file, int linenum, char **args, int kwm)
{
  static struct peers *curpeers = NULL;
  static int nb_shards = 0;
  struct peer *newpeer = NULL;
  const char *err;
  struct bind_conf *bind_conf;
  int err_code = 0;
  char *errmsg = NULL;
  static int bind_line, peer_line;

  if (strcmp(args[0], "bind") == 0 || strcmp(args[0], "default-bind") == 0) {
    int cur_arg;
    struct bind_conf *bind_conf;
    int ret;

    cur_arg = 1;

    if (init_peers_frontend(file, linenum, NULL, curpeers) != 0) {
      err_code |= ERR_ALERT | ERR_ABORT;
      goto out;
    }

    bind_conf = bind_conf_uniq_alloc(curpeers->peers_fe, file, linenum,
                                     args[1], xprt_get(XPRT_RAW));
    if (!bind_conf) {
      ha_alert("parsing [%s:%d] : '%s %s' : cannot allocate memory.\n", file, linenum, args[0], args[1]);
      err_code |= ERR_FATAL;
      goto out;
    }

    bind_conf->maxaccept = 1;
    bind_conf->accept = session_accept_fd;
    bind_conf->options |= BC_O_UNLIMITED; /* don't make the peers subject to global limits */

    if (*args[0] == 'b') {
      struct listener *l;

      if (peer_line) {
        ha_alert("parsing [%s:%d] : mixing \"peer\" and \"bind\" line is forbidden\n", file, linenum);
        err_code |= ERR_ALERT | ERR_FATAL;
        goto out;
      }

      if (!LIST_ISEMPTY(&bind_conf->listeners)) {
        ha_alert("parsing [%s:%d] : One listener per \"peers\" section is authorized but another is already configured at [%s:%d].\n", file, linenum, bind_conf->file, bind_conf->line);
        err_code |= ERR_FATAL;
      }

      if (!str2listener(args[1], curpeers->peers_fe, bind_conf, file, linenum, &errmsg)) {
        if (errmsg && *errmsg) {
          indent_msg(&errmsg, 2);
          ha_alert("parsing [%s:%d] : '%s %s' : %s\n", file, linenum, args[0], args[1], errmsg);
        }
        else
          ha_alert("parsing [%s:%d] : '%s %s' : error encountered while parsing listening address %s.\n",
               file, linenum, args[0], args[1], args[1]);
        err_code |= ERR_FATAL;
        goto out;
      }

      /* Only one listener supported. Compare first listener
       * against the last one. It must be the same one.
       */
      if (bind_conf->listeners.n != bind_conf->listeners.p) {
        ha_alert("parsing [%s:%d] : Only one listener per \"peers\" section is authorized. Multiple listening addresses or port range are not supported.\n", file, linenum);
        err_code |= ERR_ALERT | ERR_FATAL;
        goto out;
      }
      /*
       * Newly allocated listener is at the end of the list
       */
      l = LIST_ELEM(bind_conf->listeners.p, typeof(l), by_bind);

      global.maxsock++; /* for the listening socket */

      bind_line = 1;
      if (cfg_peers->local) {
        newpeer = cfg_peers->local;
      }
      else {
        /* This peer is local.
         * Note that we do not set the peer ID. This latter is initialized
         * when parsing "peer" or "server" line.
         */
        newpeer = cfg_peers_add_peer(curpeers, file, linenum, NULL, 1);
        if (!newpeer) {
          err_code |= ERR_ALERT | ERR_ABORT;
          goto out;
        }
      }
      newpeer->addr = l->rx.addr;
      newpeer->proto = l->rx.proto;
      cur_arg++;
    }

    ret = bind_parse_args_list(bind_conf, args, cur_arg, cursection, file, linenum);
    err_code |= ret;
    if (ret != 0)
      goto out;
  }
  else if (strcmp(args[0], "default-server") == 0) {
    if (init_peers_frontend(file, -1, NULL, curpeers) != 0) {
      err_code |= ERR_ALERT | ERR_ABORT;
      goto out;
    }
    err_code |= parse_server(file, linenum, args, curpeers->peers_fe, NULL,
                             SRV_PARSE_DEFAULT_SERVER|SRV_PARSE_IN_PEER_SECTION|SRV_PARSE_INITIAL_RESOLVE);
  }
  else if (strcmp(args[0], "log") == 0) {
    if (init_peers_frontend(file, linenum, NULL, curpeers) != 0) {
      err_code |= ERR_ALERT | ERR_ABORT;
      goto out;
    }
    if (!parse_logger(args, &curpeers->peers_fe->loggers, (kwm == KWM_NO), file, linenum, &errmsg)) {
      ha_alert("parsing [%s:%d] : %s : %s\n", file, linenum, args[0], errmsg);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }
  }
  else if (strcmp(args[0], "peers") == 0) { /* new peers section */
    /* Initialize these static variables when entering a new "peers" section*/
    bind_line = peer_line = 0;
    if (!*args[1]) {
      ha_alert("parsing [%s:%d] : missing name for peers section.\n", file, linenum);
      err_code |= ERR_ALERT | ERR_ABORT;
      goto out;
    }

    if (alertif_too_many_args(1, file, linenum, args, &err_code))
      goto out;

    err = invalid_char(args[1]);
    if (err) {
      ha_alert("parsing [%s:%d] : character '%c' is not permitted in '%s' name '%s'.\n",
         file, linenum, *err, args[0], args[1]);
      err_code |= ERR_ALERT | ERR_ABORT;
      goto out;
    }

    for (curpeers = cfg_peers; curpeers != NULL; curpeers = curpeers->next) {
      /*
       * If there are two proxies with the same name only following
       * combinations are allowed:
       */
      if (strcmp(curpeers->id, args[1]) == 0) {
        ha_alert("Parsing [%s:%d]: peers section '%s' has the same name as another peers section declared at %s:%d.\n",
           file, linenum, args[1], curpeers->conf.file, curpeers->conf.line);
        err_code |= ERR_ALERT | ERR_FATAL;
      }
    }

    if ((curpeers = calloc(1, sizeof(*curpeers))) == NULL) {
      ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
      err_code |= ERR_ALERT | ERR_ABORT;
      goto out;
    }

    curpeers->next = cfg_peers;
    cfg_peers = curpeers;
    curpeers->conf.file = strdup(file);
    curpeers->conf.line = linenum;
    curpeers->last_change = ns_to_sec(now_ns);
    curpeers->id = strdup(args[1]);
    curpeers->disabled = 0;
  }
  else if (strcmp(args[0], "peer") == 0 ||
           strcmp(args[0], "server") == 0) { /* peer or server definition */
    int local_peer, peer;
    int parse_addr = 0;

    peer = *args[0] == 'p';
    local_peer = strcmp(args[1], localpeer) == 0;
    /* The local peer may have already partially been parsed on a "bind" line. */
    if (*args[0] == 'p') {
      if (bind_line) {
        ha_alert("parsing [%s:%d] : mixing \"peer\" and \"bind\" line is forbidden\n", file, linenum);
        err_code |= ERR_ALERT | ERR_FATAL;
        goto out;
      }
      peer_line = 1;
    }
    if (cfg_peers->local && !cfg_peers->local->id && local_peer) {
      /* The local peer has already been initialized on a "bind" line.
       * Let's use it and store its ID.
       */
      newpeer = cfg_peers->local;
      newpeer->id = strdup(localpeer);
    }
    else {
      if (local_peer && cfg_peers->local) {
        ha_alert("parsing [%s:%d] : '%s %s' : local peer name already referenced at %s:%d. %s\n",
                 file, linenum, args[0], args[1],
         curpeers->peers_fe->conf.file, curpeers->peers_fe->conf.line, cfg_peers->local->id);
        err_code |= ERR_FATAL;
        goto out;
      }
      newpeer = cfg_peers_add_peer(curpeers, file, linenum, args[1], local_peer);
      if (!newpeer) {
        err_code |= ERR_ALERT | ERR_ABORT;
        goto out;
      }
    }

    /* Line number and peer ID are updated only if this peer is the local one. */
    if (init_peers_frontend(file,
                            newpeer->local ? linenum: -1,
                            newpeer->local ? newpeer->id : NULL,
                            curpeers) != 0) {
      err_code |= ERR_ALERT | ERR_ABORT;
      goto out;
    }

    /* This initializes curpeer->peers->peers_fe->srv.
     * The server address is parsed only if we are parsing a "peer" line,
     * or if we are parsing a "server" line and the current peer is not the local one.
     */
    parse_addr = (peer || !local_peer) ? SRV_PARSE_PARSE_ADDR : 0;
    err_code |= parse_server(file, linenum, args, curpeers->peers_fe, NULL,
                             SRV_PARSE_IN_PEER_SECTION|parse_addr|SRV_PARSE_INITIAL_RESOLVE);
    if (!curpeers->peers_fe->srv) {
      /* Remove the newly allocated peer. */
      if (newpeer != curpeers->local) {
        struct peer *p;

        p = curpeers->remote;
        curpeers->remote = curpeers->remote->next;
        free(p->id);
        free(p);
      }
      goto out;
    }

    if (nb_shards && curpeers->peers_fe->srv->shard > nb_shards) {
      ha_warning("parsing [%s:%d] : '%s %s' : %d peer shard greater value than %d shards value is ignored.\n",
                 file, linenum, args[0], args[1], curpeers->peers_fe->srv->shard, nb_shards);
      curpeers->peers_fe->srv->shard = 0;
      err_code |= ERR_WARN;
    }

    if (curpeers->peers_fe->srv->init_addr_methods || curpeers->peers_fe->srv->resolvers_id ||
        curpeers->peers_fe->srv->do_check || curpeers->peers_fe->srv->do_agent) {
      ha_warning("parsing [%s:%d] : '%s %s' : init_addr, resolvers, check and agent are ignored for peers.\n", file, linenum, args[0], args[1]);
      err_code |= ERR_WARN;
    }

    /* If the peer address has just been parsed, let's copy it to <newpeer>
     * and initializes ->proto.
     */
    if (peer || !local_peer) {
      newpeer->addr = curpeers->peers_fe->srv->addr;
      newpeer->proto = protocol_lookup(newpeer->addr.ss_family, PROTO_TYPE_STREAM, 0);
    }

    newpeer->xprt  = xprt_get(XPRT_RAW);
    newpeer->sock_init_arg = NULL;
    HA_SPIN_INIT(&newpeer->lock);

    newpeer->srv = curpeers->peers_fe->srv;
    if (!newpeer->local)
      goto out;

    /* The lines above are reserved to "peer" lines. */
    if (*args[0] == 's')
      goto out;

    bind_conf = bind_conf_uniq_alloc(curpeers->peers_fe, file, linenum, args[2], xprt_get(XPRT_RAW));
    if (!bind_conf) {
      ha_alert("parsing [%s:%d] : '%s %s' : Cannot allocate memory.\n", file, linenum, args[0], args[1]);
      err_code |= ERR_FATAL;
      goto out;
    }

    bind_conf->maxaccept = 1;
    bind_conf->accept = session_accept_fd;
    bind_conf->options |= BC_O_UNLIMITED; /* don't make the peers subject to global limits */

    if (!LIST_ISEMPTY(&bind_conf->listeners)) {
      ha_alert("parsing [%s:%d] : One listener per \"peers\" section is authorized but another is already configured at [%s:%d].\n", file, linenum, bind_conf->file, bind_conf->line);
      err_code |= ERR_FATAL;
    }

    if (!str2listener(args[2], curpeers->peers_fe, bind_conf, file, linenum, &errmsg)) {
      if (errmsg && *errmsg) {
        indent_msg(&errmsg, 2);
        ha_alert("parsing [%s:%d] : '%s %s' : %s\n", file, linenum, args[0], args[1], errmsg);
      }
      else
        ha_alert("parsing [%s:%d] : '%s %s' : error encountered while parsing listening address %s.\n",
                 file, linenum, args[0], args[1], args[2]);
      err_code |= ERR_FATAL;
      goto out;
    }

    global.maxsock++; /* for the listening socket */
  }
  else if (strcmp(args[0], "shards") == 0) {
    char *endptr;

    if (!*args[1]) {
      ha_alert("parsing [%s:%d] : '%s' : missing value\n", file, linenum, args[0]);
      err_code |= ERR_FATAL;
      goto out;
    }

    curpeers->nb_shards = strtol(args[1], &endptr, 10);
    if (*endptr != '\0') {
      ha_alert("parsing [%s:%d] : '%s' : expects an integer argument, found '%s'\n",
               file, linenum, args[0], args[1]);
      err_code |= ERR_FATAL;
      goto out;
    }

    if (!curpeers->nb_shards) {
      ha_alert("parsing [%s:%d] : '%s' : expects a strictly positive integer argument\n",
               file, linenum, args[0]);
      err_code |= ERR_FATAL;
      goto out;
    }

    nb_shards = curpeers->nb_shards;
  }
  else if (strcmp(args[0], "table") == 0) {
    struct stktable *t, *other;
    char *id;
    size_t prefix_len;

    /* Line number and peer ID are updated only if this peer is the local one. */
    if (init_peers_frontend(file, -1, NULL, curpeers) != 0) {
      err_code |= ERR_ALERT | ERR_ABORT;
      goto out;
    }

    /* Build the stick-table name, concatenating the "peers" section name
     * followed by a '/' character and the table name argument.
     */
    chunk_reset(&trash);
    if (!chunk_strcpy(&trash, curpeers->id)) {
      ha_alert("parsing [%s:%d]: '%s %s' : stick-table name too long.\n",
               file, linenum, args[0], args[1]);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }

    prefix_len = trash.data;
    if (!chunk_memcat(&trash, "/", 1) || !chunk_strcat(&trash, args[1])) {
      ha_alert("parsing [%s:%d]: '%s %s' : stick-table name too long.\n",
               file, linenum, args[0], args[1]);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }

    t = calloc(1, sizeof *t);
    id = strdup(trash.area);
    if (!t || !id) {
      ha_alert("parsing [%s:%d]: '%s %s' : memory allocation failed\n",
               file, linenum, args[0], args[1]);
      free(t);
      free(id);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }

    other = stktable_find_by_name(trash.area);
    if (other) {
      ha_alert("parsing [%s:%d] : stick-table name '%s' conflicts with table declared in %s '%s' at %s:%d.\n",
               file, linenum, args[1],
               other->proxy ? proxy_cap_str(other->proxy->cap) : "peers",
               other->proxy ? other->id : other->peers.p->id,
               other->conf.file, other->conf.line);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }


    err_code |= parse_stick_table(file, linenum, args, t, id, id + prefix_len, curpeers);
    if (err_code & ERR_FATAL) {
      free(t);
      free(id);
      goto out;
    }

    stktable_store_name(t);
    t->next = stktables_list;
    stktables_list = t;
  }
  else if (strcmp(args[0], "disabled") == 0) {  /* disables this peers section */
    curpeers->disabled |= PR_FL_DISABLED;
  }
  else if (strcmp(args[0], "enabled") == 0) {  /* enables this peers section (used to revert a disabled default) */
    curpeers->disabled = 0;
  }
  else if (*args[0] != 0) {
    struct peers_kw_list *pkwl;
    int index;
    int rc = -1;

    list_for_each_entry(pkwl, &peers_keywords.list, list) {
      for (index = 0; pkwl->kw[index].kw != NULL; index++) {
        if (strcmp(pkwl->kw[index].kw, args[0]) == 0) {
          rc = pkwl->kw[index].parse(args, curpeers, file, linenum, &errmsg);
          if (rc < 0) {
            ha_alert("parsing [%s:%d] : %s\n", file, linenum, errmsg);
            err_code |= ERR_ALERT | ERR_FATAL;
            goto out;
          }
          else if (rc > 0) {
            ha_warning("parsing [%s:%d] : %s\n", file, linenum, errmsg);
            err_code |= ERR_WARN;
            goto out;
          }
          goto out;
        }
      }
    }

    ha_alert("parsing [%s:%d] : unknown keyword '%s' in '%s' section\n", file, linenum, args[0], cursection);
    err_code |= ERR_ALERT | ERR_FATAL;
    goto out;
  }

out:
  free(errmsg);
  return err_code;
}

/*
 * Parse a line in a <listen>, <frontend> or <backend> section.
 * Returns the error code, 0 if OK, or any combination of :
 *  - ERR_ABORT: must abort ASAP
 *  - ERR_FATAL: we can continue parsing but not start the service
 *  - ERR_WARN: a warning has been emitted
 *  - ERR_ALERT: an alert has been emitted
 * Only the two first ones can stop processing, the two others are just
 * indicators.
 */
int cfg_parse_mailers(const char *file, int linenum, char **args, int kwm)
{
  static struct mailers *curmailers = NULL;
  struct mailer *newmailer = NULL;
  const char *err;
  int err_code = 0;
  char *errmsg = NULL;

  if (strcmp(args[0], "mailers") == 0) { /* new mailers section */
    if (!*args[1]) {
      ha_alert("parsing [%s:%d] : missing name for mailers section.\n", file, linenum);
      err_code |= ERR_ALERT | ERR_ABORT;
      goto out;
    }

    err = invalid_char(args[1]);
    if (err) {
      ha_alert("parsing [%s:%d] : character '%c' is not permitted in '%s' name '%s'.\n",
         file, linenum, *err, args[0], args[1]);
      err_code |= ERR_ALERT | ERR_ABORT;
      goto out;
    }

    for (curmailers = mailers; curmailers != NULL; curmailers = curmailers->next) {
      /*
       * If there are two proxies with the same name only following
       * combinations are allowed:
       */
      if (strcmp(curmailers->id, args[1]) == 0) {
        ha_alert("Parsing [%s:%d]: mailers section '%s' has the same name as another mailers section declared at %s:%d.\n",
           file, linenum, args[1], curmailers->conf.file, curmailers->conf.line);
        err_code |= ERR_ALERT | ERR_FATAL;
      }
    }

    if ((curmailers = calloc(1, sizeof(*curmailers))) == NULL) {
      ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
      err_code |= ERR_ALERT | ERR_ABORT;
      goto out;
    }

    curmailers->next = mailers;
    mailers = curmailers;
    curmailers->conf.file = strdup(file);
    curmailers->conf.line = linenum;
    curmailers->id = strdup(args[1]);
    curmailers->timeout.mail = DEF_MAILALERTTIME;/* XXX: Would like to Skip to the next alert, if any, ASAP.
      * But need enough time so that timeouts don't occur
      * during tcp procssing. For now just us an arbitrary default. */
  }
  else if (strcmp(args[0], "mailer") == 0) { /* mailer definition */
    struct sockaddr_storage *sk;
    int port1, port2;
    struct protocol *proto;

    if (!*args[2]) {
      ha_alert("parsing [%s:%d] : '%s' expects <name> and <addr>[:<port>] as arguments.\n",
         file, linenum, args[0]);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }

    err = invalid_char(args[1]);
    if (err) {
      ha_alert("parsing [%s:%d] : character '%c' is not permitted in server name '%s'.\n",
         file, linenum, *err, args[1]);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }

    if ((newmailer = calloc(1, sizeof(*newmailer))) == NULL) {
      ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
      err_code |= ERR_ALERT | ERR_ABORT;
      goto out;
    }

    /* the mailers are linked backwards first */
    curmailers->count++;
    newmailer->next = curmailers->mailer_list;
    curmailers->mailer_list = newmailer;
    newmailer->mailers = curmailers;
    newmailer->conf.file = strdup(file);
    newmailer->conf.line = linenum;

    newmailer->id = strdup(args[1]);

    sk = str2sa_range(args[2], NULL, &port1, &port2, NULL, &proto, NULL,
                      &errmsg, NULL, NULL,
                      PA_O_RESOLVE | PA_O_PORT_OK | PA_O_PORT_MAND | PA_O_STREAM | PA_O_XPRT | PA_O_CONNECT);
    if (!sk) {
      ha_alert("parsing [%s:%d] : '%s %s' : %s\n", file, linenum, args[0], args[1], errmsg);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }

    if (proto->sock_prot != IPPROTO_TCP) {
      ha_alert("parsing [%s:%d] : '%s %s' : TCP not supported for this address family.\n",
         file, linenum, args[0], args[1]);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }

    newmailer->addr = *sk;
    newmailer->proto = proto;
    newmailer->xprt  = xprt_get(XPRT_RAW);
    newmailer->sock_init_arg = NULL;
  }
  else if (strcmp(args[0], "timeout") == 0) {
    if (!*args[1]) {
      ha_alert("parsing [%s:%d] : '%s' expects 'mail' and <time> as arguments.\n",
         file, linenum, args[0]);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }
    else if (strcmp(args[1], "mail") == 0) {
      const char *res;
      unsigned int timeout_mail;
      if (!*args[2]) {
        ha_alert("parsing [%s:%d] : '%s %s' expects <time> as argument.\n",
           file, linenum, args[0], args[1]);
        err_code |= ERR_ALERT | ERR_FATAL;
        goto out;
      }
      res = parse_time_err(args[2], &timeout_mail, TIME_UNIT_MS);
      if (res == PARSE_TIME_OVER) {
        ha_alert("parsing [%s:%d]: timer overflow in argument <%s> to <%s %s>, maximum value is 2147483647 ms (~24.8 days).\n",
           file, linenum, args[2], args[0], args[1]);
        err_code |= ERR_ALERT | ERR_FATAL;
        goto out;
      }
      else if (res == PARSE_TIME_UNDER) {
        ha_alert("parsing [%s:%d]: timer underflow in argument <%s> to <%s %s>, minimum non-null value is 1 ms.\n",
           file, linenum, args[2], args[0], args[1]);
        err_code |= ERR_ALERT | ERR_FATAL;
        goto out;
      }
      else if (res) {
        ha_alert("parsing [%s:%d]: unexpected character '%c' in argument to <%s %s>.\n",
           file, linenum, *res, args[0], args[1]);
        err_code |= ERR_ALERT | ERR_FATAL;
        goto out;
      }
      curmailers->timeout.mail = timeout_mail;
    } else {
      ha_alert("parsing [%s:%d] : '%s' expects 'mail' and <time> as arguments got '%s'.\n",
        file, linenum, args[0], args[1]);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }
  }
  else if (*args[0] != 0) {
    ha_alert("parsing [%s:%d] : unknown keyword '%s' in '%s' section\n", file, linenum, args[0], cursection);
    err_code |= ERR_ALERT | ERR_FATAL;
    goto out;
  }

out:
  free(errmsg);
  return err_code;
}

void free_email_alert(struct proxy *p)
{
  ha_free(&p->email_alert.mailers.name);
  ha_free(&p->email_alert.from);
  ha_free(&p->email_alert.to);
  ha_free(&p->email_alert.myhostname);
}


int
cfg_parse_netns(const char *file, int linenum, char **args, int kwm)
{
#ifdef USE_NS
  const char *err;
  const char *item = args[0];

  if (strcmp(item, "namespace_list") == 0) {
    return 0;
  }
  else if (strcmp(item, "namespace") == 0) {
    size_t idx = 1;
    const char *current;
    while (*(current = args[idx++])) {
      err = invalid_char(current);
      if (err) {
        ha_alert("parsing [%s:%d]: character '%c' is not permitted in '%s' name '%s'.\n",
           file, linenum, *err, item, current);
        return ERR_ALERT | ERR_FATAL;
      }

      if (netns_store_lookup(current, strlen(current))) {
        ha_alert("parsing [%s:%d]: Namespace '%s' is already added.\n",
           file, linenum, current);
        return ERR_ALERT | ERR_FATAL;
      }
      if (!netns_store_insert(current)) {
        ha_alert("parsing [%s:%d]: Cannot open namespace '%s'.\n",
           file, linenum, current);
        return ERR_ALERT | ERR_FATAL;
      }
    }
  }

  return 0;
#else
  ha_alert("parsing [%s:%d]: namespace support is not compiled in.",
     file, linenum);
  return ERR_ALERT | ERR_FATAL;
#endif
}

int
cfg_parse_users(const char *file, int linenum, char **args, int kwm)
{

  int err_code = 0;
  const char *err;

  if (strcmp(args[0], "userlist") == 0) {   /* new userlist */
    struct userlist *newul;

    if (!*args[1]) {
      ha_alert("parsing [%s:%d]: '%s' expects <name> as arguments.\n",
         file, linenum, args[0]);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }
    if (alertif_too_many_args(1, file, linenum, args, &err_code))
      goto out;

    err = invalid_char(args[1]);
    if (err) {
      ha_alert("parsing [%s:%d]: character '%c' is not permitted in '%s' name '%s'.\n",
         file, linenum, *err, args[0], args[1]);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }

    for (newul = userlist; newul; newul = newul->next)
      if (strcmp(newul->name, args[1]) == 0) {
        ha_warning("parsing [%s:%d]: ignoring duplicated userlist '%s'.\n",
             file, linenum, args[1]);
        err_code |= ERR_WARN;
        goto out;
      }

    newul = calloc(1, sizeof(*newul));
    if (!newul) {
      ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
      err_code |= ERR_ALERT | ERR_ABORT;
      goto out;
    }

    newul->name = strdup(args[1]);
    if (!newul->name) {
      ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
      err_code |= ERR_ALERT | ERR_ABORT;
      free(newul);
      goto out;
    }

    newul->next = userlist;
    userlist = newul;

  } else if (strcmp(args[0], "group") == 0) {   /* new group */
    int cur_arg;
    const char *err;
    struct auth_groups *ag;

    if (!*args[1]) {
      ha_alert("parsing [%s:%d]: '%s' expects <name> as arguments.\n",
         file, linenum, args[0]);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }

    err = invalid_char(args[1]);
    if (err) {
      ha_alert("parsing [%s:%d]: character '%c' is not permitted in '%s' name '%s'.\n",
         file, linenum, *err, args[0], args[1]);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }

    if (!userlist)
      goto out;

    for (ag = userlist->groups; ag; ag = ag->next)
      if (strcmp(ag->name, args[1]) == 0) {
        ha_warning("parsing [%s:%d]: ignoring duplicated group '%s' in userlist '%s'.\n",
             file, linenum, args[1], userlist->name);
        err_code |= ERR_ALERT;
        goto out;
      }

    ag = calloc(1, sizeof(*ag));
    if (!ag) {
      ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
      err_code |= ERR_ALERT | ERR_ABORT;
      goto out;
    }

    ag->name = strdup(args[1]);
    if (!ag->name) {
      ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
      err_code |= ERR_ALERT | ERR_ABORT;
      free(ag);
      goto out;
    }

    cur_arg = 2;

    while (*args[cur_arg]) {
      if (strcmp(args[cur_arg], "users") == 0) {
        ag->groupusers = strdup(args[cur_arg + 1]);
        cur_arg += 2;
        continue;
      } else {
        ha_alert("parsing [%s:%d]: '%s' only supports 'users' option.\n",
           file, linenum, args[0]);
        err_code |= ERR_ALERT | ERR_FATAL;
        free(ag->groupusers);
        free(ag->name);
        free(ag);
        goto out;
      }
    }

    ag->next = userlist->groups;
    userlist->groups = ag;

  } else if (strcmp(args[0], "user") == 0) {   /* new user */
    struct auth_users *newuser;
    int cur_arg;

    if (!*args[1]) {
      ha_alert("parsing [%s:%d]: '%s' expects <name> as arguments.\n",
         file, linenum, args[0]);
      err_code |= ERR_ALERT | ERR_FATAL;
      goto out;
    }
    if (!userlist)
      goto out;

    for (newuser = userlist->users; newuser; newuser = newuser->next)
      if (strcmp(newuser->user, args[1]) == 0) {
        ha_warning("parsing [%s:%d]: ignoring duplicated user '%s' in userlist '%s'.\n",
             file, linenum, args[1], userlist->name);
        err_code |= ERR_ALERT;
        goto out;
      }

    newuser = calloc(1, sizeof(*newuser));
    if (!newuser) {
      ha_alert("parsing [%s:%d]: out of memory.\n", file, linenum);
      err_code |= ERR_ALERT | ERR_ABORT;
      goto out;
    }

    newuser->user = strdup(args[1]);

    newuser->next = userlist->users;
    userlist->users = newuser;

    cur_arg = 2;

    while (*args[cur_arg]) {
      if (strcmp(args[cur_arg], "password") == 0) {
#ifdef USE_LIBCRYPT
        if (!crypt("", args[cur_arg + 1])) {
          ha_alert("parsing [%s:%d]: the encrypted password used for user '%s' is not supported by crypt(3).\n",
             file, linenum, newuser->user);
          err_code |= ERR_ALERT | ERR_FATAL;
          goto out;
        }
#else
        ha_warning("parsing [%s:%d]: no crypt(3) support compiled, encrypted passwords will not work.\n",
             file, linenum);
        err_code |= ERR_ALERT;
#endif
        newuser->pass = strdup(args[cur_arg + 1]);
        cur_arg += 2;
        continue;
      } else if (strcmp(args[cur_arg], "insecure-password") == 0) {
        newuser->pass = strdup(args[cur_arg + 1]);
        newuser->flags |= AU_O_INSECURE;
        cur_arg += 2;
        continue;
      } else if (strcmp(args[cur_arg], "groups") == 0) {
        newuser->u.groups_names = strdup(args[cur_arg + 1]);
        cur_arg += 2;
        continue;
      } else {
        ha_alert("parsing [%s:%d]: '%s' only supports 'password', 'insecure-password' and 'groups' options.\n",
           file, linenum, args[0]);
        err_code |= ERR_ALERT | ERR_FATAL;
        goto out;
      }
    }
  } else {
    ha_alert("parsing [%s:%d]: unknown keyword '%s' in '%s' section\n", file, linenum, args[0], "users");
    err_code |= ERR_ALERT | ERR_FATAL;
  }

out:
  return err_code;
}

int
cfg_parse_scope(const char *file, int linenum, char *line)
{
  char *beg, *end, *scope = NULL;
  int err_code = 0;
  const char *err;

  beg = line + 1;
  end = strchr(beg, ']');

  /* Detect end of scope declaration */
  if (!end || end == beg) {
    ha_alert("parsing [%s:%d] : empty scope name is forbidden.\n",
       file, linenum);
    err_code |= ERR_ALERT | ERR_FATAL;
    goto out;
  }

  /* Get scope name and check its validity */
  scope = my_strndup(beg, end-beg);
  err = invalid_char(scope);
  if (err) {
    ha_alert("parsing [%s:%d] : character '%c' is not permitted in a scope name.\n",
       file, linenum, *err);
    err_code |= ERR_ALERT | ERR_ABORT;
    goto out;
  }

  /* Be sure to have a scope declaration alone on its line */
  line = end+1;
  while (isspace((unsigned char)*line))
    line++;
  if (*line && *line != '#' && *line != '\n' && *line != '\r') {
    ha_alert("parsing [%s:%d] : character '%c' is not permitted after scope declaration.\n",
       file, linenum, *line);
    err_code |= ERR_ALERT | ERR_ABORT;
    goto out;
  }

  /* We have a valid scope declaration, save it */
  free(cfg_scope);
  cfg_scope = scope;
  scope = NULL;

  out:
  free(scope);
  return err_code;
}

int
cfg_parse_track_sc_num(unsigned int *track_sc_num,
                       const char *arg, const char *end, char **errmsg)
{
  const char *p;
  unsigned int num;

  p = arg;
  num = read_uint64(&arg, end);

  if (arg != end) {
    memprintf(errmsg, "Wrong track-sc number '%s'", p);
    return -1;
  }

  if (num >= global.tune.nb_stk_ctr) {
    if (!global.tune.nb_stk_ctr)
      memprintf(errmsg, "%u track-sc number not usable, stick-counters "
                "are disabled by tune.stick-counters", num);
    else
      memprintf(errmsg, "%u track-sc number exceeding "
                "%d (tune.stick-counters-1) value", num, global.tune.nb_stk_ctr - 1);
    return -1;
  }

  *track_sc_num = num;
  return 0;
}

/*
 * Detect a global section after a non-global one and output a diagnostic
 * warning.
 */
static void check_section_position(char *section_name, const char *file, int linenum)
{
  if (strcmp(section_name, "global") == 0) {
    if ((global.mode & MODE_DIAG) && non_global_section_parsed == 1)
            _ha_diag_warning("parsing [%s:%d] : global section detected after a non-global one, the prevalence of their statements is unspecified\n", file, linenum);
  }
  else if (non_global_section_parsed == 0) {
    non_global_section_parsed = 1;
  }
}

/* apply the current default_path setting for config file <file>, and
 * optionally replace the current path to <origin> if not NULL while the
 * default-path mode is set to "origin". Errors are returned into an
 * allocated string passed to <err> if it's not NULL. Returns 0 on failure
 * or non-zero on success.
 */
static int cfg_apply_default_path(const char *file, const char *origin, char **err)
{
  const char *beg, *end;

  /* make path start at <beg> and end before <end>, and switch it to ""
   * if no slash was passed.
   */
  beg = file;
  end = strrchr(beg, '/');
  if (!end)
    end = beg;

  if (!*initial_cwd) {
    if (getcwd(initial_cwd, sizeof(initial_cwd)) == NULL) {
      if (err)
        memprintf(err, "Impossible to retrieve startup directory name: %s", strerror(errno));
      return 0;
    }
  }
  else if (chdir(initial_cwd) == -1) {
    if (err)
      memprintf(err, "Impossible to get back to initial directory '%s': %s", initial_cwd, strerror(errno));
    return 0;
  }

  /* OK now we're (back) to initial_cwd */

  switch (default_path_mode) {
  case DEFAULT_PATH_CURRENT:
    /* current_cwd never set, nothing to do */
    return 1;

  case DEFAULT_PATH_ORIGIN:
    /* current_cwd set in the config */
    if (origin &&
        snprintf(current_cwd, sizeof(current_cwd), "%s", origin) > sizeof(current_cwd)) {
      if (err)
        memprintf(err, "Absolute path too long: '%s'", origin);
      return 0;
    }
    break;

  case DEFAULT_PATH_CONFIG:
    if (end - beg >= sizeof(current_cwd)) {
      if (err)
        memprintf(err, "Config file path too long, cannot use for relative paths: '%s'", file);
      return 0;
    }
    memcpy(current_cwd, beg, end - beg);
    current_cwd[end - beg] = 0;
    break;

  case DEFAULT_PATH_PARENT:
    if (end - beg + 3 >= sizeof(current_cwd)) {
      if (err)
        memprintf(err, "Config file path too long, cannot use for relative paths: '%s'", file);
      return 0;
    }
    memcpy(current_cwd, beg, end - beg);
    if (end > beg)
      memcpy(current_cwd + (end - beg), "/..\0", 4);
    else
      memcpy(current_cwd + (end - beg), "..\0", 3);
    break;
  }

  if (*current_cwd && chdir(current_cwd) == -1) {
    if (err)
      memprintf(err, "Impossible to get back to directory '%s': %s", initial_cwd, strerror(errno));
    return 0;
  }

  return 1;
}

/* parses a global "default-path" directive. */
static int cfg_parse_global_def_path(char **args, int section_type, struct proxy *curpx,
                                     const struct proxy *defpx, const char *file, int line,
                                     char **err)
{
  int ret = -1;

  /* "current", "config", "parent", "origin <path>" */

  if (strcmp(args[1], "current") == 0)
    default_path_mode = DEFAULT_PATH_CURRENT;
  else if (strcmp(args[1], "config") == 0)
    default_path_mode = DEFAULT_PATH_CONFIG;
  else if (strcmp(args[1], "parent") == 0)
    default_path_mode = DEFAULT_PATH_PARENT;
  else if (strcmp(args[1], "origin") == 0)
    default_path_mode = DEFAULT_PATH_ORIGIN;
  else {
    memprintf(err, "%s default-path mode '%s' for '%s', supported modes include 'current', 'config', 'parent', and 'origin'.", *args[1] ? "unsupported" : "missing", args[1], args[0]);
    goto end;
  }

  if (default_path_mode == DEFAULT_PATH_ORIGIN) {
    if (!*args[2]) {
      memprintf(err, "'%s %s' expects a directory as an argument.", args[0], args[1]);
      goto end;
    }
    if (!cfg_apply_default_path(file, args[2], err)) {
      memprintf(err, "couldn't set '%s' to origin '%s': %s.", args[0], args[2], *err);
      goto end;
    }
  }
  else if (!cfg_apply_default_path(file, NULL, err)) {
    memprintf(err, "couldn't set '%s' to '%s': %s.", args[0], args[1], *err);
    goto end;
  }

  /* note that once applied, the path is immediately updated */

  ret = 0;
 end:
  return ret;
}

/*
 * This function reads and parses the configuration file given in the argument.
 * Returns the error code, 0 if OK, -1 if the config file couldn't be opened,
 * or any combination of :
 *  - ERR_ABORT: must abort ASAP
 *  - ERR_FATAL: we can continue parsing but not start the service
 *  - ERR_WARN: a warning has been emitted
 *  - ERR_ALERT: an alert has been emitted
 * Only the two first ones can stop processing, the two others are just
 * indicators.
 */
int readcfgfile(const char *file)
{
  char *thisline = NULL;
  int linesize = LINESIZE;
  FILE *f = NULL;
  int linenum = 0;
  int err_code = 0;
  struct cfg_section *cs = NULL, *pcs = NULL;
  struct cfg_section *ics;
  int readbytes = 0;
  char *outline = NULL;
  size_t outlen = 0;
  size_t outlinesize = 0;
  int fatal = 0;
  int missing_lf = -1;
  int nested_cond_lvl = 0;
  enum nested_cond_state nested_conds[MAXNESTEDCONDS];
  char *errmsg = NULL;

  global.cfg_curr_line = 0;
  global.cfg_curr_file = file;

  if ((thisline = malloc(sizeof(*thisline) * linesize)) == NULL) {
    ha_alert("Out of memory trying to allocate a buffer for a configuration line.\n");
    err_code = -1;
    goto err;
  }

  if ((f = fopen(file,"r")) == NULL) {
    err_code = -1;
    goto err;
  }

  /* change to the new dir if required */
  if (!cfg_apply_default_path(file, NULL, &errmsg)) {
    ha_alert("parsing [%s:%d]: failed to apply default-path: %s.\n", file, linenum, errmsg);
    free(errmsg);
    err_code = -1;
    goto err;
  }

next_line:
  while (fgets(thisline + readbytes, linesize - readbytes, f) != NULL) {
    int arg, kwm = KWM_STD;
    char *end;
    char *args[MAX_LINE_ARGS + 1];
    char *line = thisline;

    if (missing_lf != -1) {
      ha_alert("parsing [%s:%d]: Stray NUL character at position %d.\n",
               file, linenum, (missing_lf + 1));
      err_code |= ERR_ALERT | ERR_FATAL;
      missing_lf = -1;
      break;
    }

    linenum++;
    global.cfg_curr_line = linenum;

    if (fatal >= 50) {
      ha_alert("parsing [%s:%d]: too many fatal errors (%d), stopping now.\n", file, linenum, fatal);
      break;
    }

    end = line + strlen(line);

    if (end-line == linesize-1 && *(end-1) != '\n') {
      /* Check if we reached the limit and the last char is not \n.
       * Watch out for the last line without the terminating '\n'!
       */
      char *newline;
      int newlinesize = linesize * 2;

      newline = realloc(thisline, sizeof(*thisline) * newlinesize);
      if (newline == NULL) {
        ha_alert("parsing [%s:%d]: line too long, cannot allocate memory.\n",
           file, linenum);
        err_code |= ERR_ALERT | ERR_FATAL;
        fatal++;
        linenum--;
        continue;
      }

      readbytes = linesize - 1;
      linesize = newlinesize;
      thisline = newline;
      linenum--;
      continue;
    }

    readbytes = 0;

    if (end > line && *(end-1) == '\n') {
      /* kill trailing LF */
      *(end - 1) = 0;
    }
    else {
      /* mark this line as truncated */
      missing_lf = end - line;
    }

    /* skip leading spaces */
    while (isspace((unsigned char)*line))
      line++;

    if (*line == '[') {/* This is the beginning if a scope */
      err_code |= cfg_parse_scope(file, linenum, line);
      goto next_line;
    }

    while (1) {
      uint32_t err;
      const char *errptr;

      arg = sizeof(args) / sizeof(*args);
      outlen = outlinesize;
      err = parse_line(line, outline, &outlen, args, &arg,
           PARSE_OPT_ENV | PARSE_OPT_DQUOTE | PARSE_OPT_SQUOTE |
           PARSE_OPT_BKSLASH | PARSE_OPT_SHARP | PARSE_OPT_WORD_EXPAND,
           &errptr);

      if (err & PARSE_ERR_QUOTE) {
        size_t newpos = sanitize_for_printing(line, errptr - line, 80);

        ha_alert("parsing [%s:%d]: unmatched quote at position %d:\n"
           "  %s\n  %*s\n", file, linenum, (int)(errptr-thisline+1), line, (int)(newpos+1), "^");
        err_code |= ERR_ALERT | ERR_FATAL;
        fatal++;
        goto next_line;
      }

      if (err & PARSE_ERR_BRACE) {
        size_t newpos = sanitize_for_printing(line, errptr - line, 80);

        ha_alert("parsing [%s:%d]: unmatched brace in environment variable name at position %d:\n"
           "  %s\n  %*s\n", file, linenum, (int)(errptr-thisline+1), line, (int)(newpos+1), "^");
        err_code |= ERR_ALERT | ERR_FATAL;
        fatal++;
        goto next_line;
      }

      if (err & PARSE_ERR_VARNAME) {
        size_t newpos = sanitize_for_printing(line, errptr - line, 80);

        ha_alert("parsing [%s:%d]: forbidden first char in environment variable name at position %d:\n"
           "  %s\n  %*s\n", file, linenum, (int)(errptr-thisline+1), line, (int)(newpos+1), "^");
        err_code |= ERR_ALERT | ERR_FATAL;
        fatal++;
        goto next_line;
      }

      if (err & PARSE_ERR_HEX) {
        size_t newpos = sanitize_for_printing(line, errptr - line, 80);

        ha_alert("parsing [%s:%d]: truncated or invalid hexadecimal sequence at position %d:\n"
           "  %s\n  %*s\n", file, linenum, (int)(errptr-thisline+1), line, (int)(newpos+1), "^");
        err_code |= ERR_ALERT | ERR_FATAL;
        fatal++;
        goto next_line;
      }

      if (err & PARSE_ERR_WRONG_EXPAND) {
        size_t newpos = sanitize_for_printing(line, errptr - line, 80);

        ha_alert("parsing [%s:%d]: truncated or invalid word expansion sequence at position %d:\n"
           "  %s\n  %*s\n", file, linenum, (int)(errptr-thisline+1), line, (int)(newpos+1), "^");
        err_code |= ERR_ALERT | ERR_FATAL;
        fatal++;
        goto next_line;
      }

      if (err & (PARSE_ERR_TOOLARGE|PARSE_ERR_OVERLAP)) {
        outlinesize = (outlen + 1023) & -1024;
        outline = my_realloc2(outline, outlinesize);
        if (outline == NULL) {
          ha_alert("parsing [%s:%d]: line too long, cannot allocate memory.\n",
             file, linenum);
          err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
          fatal++;
          outlinesize = 0;
          goto err;
        }
        /* try again */
        continue;
      }

      if (err & PARSE_ERR_TOOMANY) {
        /* only check this *after* being sure the output is allocated */
        ha_alert("parsing [%s:%d]: too many words, truncating after word %d, position %ld: <%s>.\n",
           file, linenum, MAX_LINE_ARGS, (long)(args[MAX_LINE_ARGS-1] - outline + 1), args[MAX_LINE_ARGS-1]);
        err_code |= ERR_ALERT | ERR_FATAL;
        fatal++;
        goto next_line;
      }

      /* everything's OK */
      break;
    }

    /* dump cfg */
    if (global.mode & MODE_DUMP_CFG) {
      if (args[0] != NULL) {
        struct cfg_section *sect;
        int is_sect = 0;
        int i = 0;
        uint32_t g_key = HA_ATOMIC_LOAD(&global.anon_key);

        if (global.mode & MODE_DUMP_NB_L)
          qfprintf(stdout, "%d\t", linenum);

        /* if a word is in sections list, is_sect = 1 */
        list_for_each_entry(sect, &sections, list) {
          if (strcmp(args[0], sect->section_name) == 0) {
            is_sect = 1;
            break;
          }
        }

        if (g_key == 0) {
          /* no anonymizing needed, dump the config as-is (but without comments).
           * Note: tabs were lost during tokenizing, so we reinsert for non-section
           * keywords.
           */
          if (!is_sect)
            qfprintf(stdout, "\t");

          for (i = 0; i < arg; i++) {
            qfprintf(stdout, "%s ", args[i]);
          }
          qfprintf(stdout, "\n");
          continue;
        }

        /* We're anonymizing */

        if (is_sect) {
          /* new sections are optionally followed by an identifier */
          if (arg >= 2) {
            qfprintf(stdout, "%s %s\n", args[0], HA_ANON_ID(g_key, args[1]));
          }
          else {
            qfprintf(stdout, "%s\n", args[0]);
          }
          continue;
        }

        /* non-section keywords start indented */
        qfprintf(stdout, "\t");

        /* some keywords deserve special treatment */
        if (!*args[0]) {
          qfprintf(stdout, "\n");
        }

        else if (strcmp(args[0], "anonkey") == 0) {
          qfprintf(stdout, "%s [...]\n", args[0]);
        }

        else if (strcmp(args[0], "maxconn") == 0) {
          qfprintf(stdout, "%s %s\n", args[0], args[1]);
        }

        else if (strcmp(args[0], "stats") == 0 &&
           (strcmp(args[1], "timeout") == 0 || strcmp(args[1], "maxconn") == 0)) {
          qfprintf(stdout, "%s %s %s\n", args[0], args[1], args[2]);
        }

        else if (strcmp(args[0], "stats") == 0 && strcmp(args[1], "socket") == 0) {
          qfprintf(stdout, "%s %s ", args[0], args[1]);

          if (arg > 2) {
            qfprintf(stdout, "%s ", hash_ipanon(g_key, args[2], 1));

            if (arg > 3) {
              qfprintf(stdout, "[...]\n");
            }
            else {
              qfprintf(stdout, "\n");
            }
          }
          else {
            qfprintf(stdout, "\n");
          }
        }

        else if (strcmp(args[0], "timeout") == 0) {
          qfprintf(stdout, "%s %s %s\n", args[0], args[1], args[2]);
        }

        else if (strcmp(args[0], "mode") == 0) {
          qfprintf(stdout, "%s %s\n", args[0], args[1]);
        }

        /* It concerns user in global section and in userlist */
        else if (strcmp(args[0], "user") == 0) {
          qfprintf(stdout, "%s %s ", args[0], HA_ANON_ID(g_key, args[1]));

          if (arg > 2) {
            qfprintf(stdout, "[...]\n");
          }
          else {
            qfprintf(stdout, "\n");
          }
        }

        else if (strcmp(args[0], "bind") == 0) {
          qfprintf(stdout, "%s ", args[0]);
          qfprintf(stdout, "%s ", hash_ipanon(g_key, args[1], 1));
          if (arg > 2) {
            qfprintf(stdout, "[...]\n");
          }
          else {
            qfprintf(stdout, "\n");
          }
        }

        else if (strcmp(args[0], "server") == 0) {
          qfprintf(stdout, "%s %s ", args[0], HA_ANON_ID(g_key, args[1]));

          if (arg > 2) {
            qfprintf(stdout, "%s ", hash_ipanon(g_key, args[2], 1));
          }
          if (arg > 3) {
            qfprintf(stdout, "[...]\n");
          }
          else {
            qfprintf(stdout, "\n");
          }
        }

        else if (strcmp(args[0], "redirect") == 0) {
          qfprintf(stdout, "%s %s ", args[0], args[1]);

          if (strcmp(args[1], "prefix") == 0 || strcmp(args[1], "location") == 0) {
            qfprintf(stdout, "%s ", HA_ANON_PATH(g_key, args[2]));
          }
          else {
            qfprintf(stdout, "%s ", args[2]);
          }
          if (arg > 3) {
            qfprintf(stdout, "[...]");
          }
          qfprintf(stdout, "\n");
        }

        else if (strcmp(args[0], "acl") == 0) {
          qfprintf(stdout, "%s %s %s ", args[0], HA_ANON_ID(g_key, args[1]), args[2]);

          if (arg > 3) {
            qfprintf(stdout, "[...]");
          }
          qfprintf(stdout, "\n");
        }

        else if (strcmp(args[0], "log") == 0) {
          qfprintf(stdout, "log ");

          if (strcmp(args[1], "global") == 0) {
            qfprintf(stdout, "%s ", args[1]);
          }
          else {
            qfprintf(stdout, "%s ", hash_ipanon(g_key, args[1], 1));
          }
          if (arg > 2) {
            qfprintf(stdout, "[...]");
          }
          qfprintf(stdout, "\n");
        }

        else if (strcmp(args[0], "peer") == 0) {
          qfprintf(stdout, "%s %s ", args[0], HA_ANON_ID(g_key, args[1]));
          qfprintf(stdout, "%s ", hash_ipanon(g_key, args[2], 1));

          if (arg > 3) {
            qfprintf(stdout, "[...]");
          }
          qfprintf(stdout, "\n");
        }

        else if (strcmp(args[0], "use_backend") == 0) {
          qfprintf(stdout, "%s %s ", args[0], HA_ANON_ID(g_key, args[1]));

          if (arg > 2) {
            qfprintf(stdout, "[...]");
          }
          qfprintf(stdout, "\n");
        }

        else if (strcmp(args[0], "default_backend") == 0) {
          qfprintf(stdout, "%s %s\n", args[0], HA_ANON_ID(g_key, args[1]));
        }

        else if (strcmp(args[0], "source") == 0) {
          qfprintf(stdout, "%s %s ", args[0], hash_ipanon(g_key, args[1], 1));

          if (arg > 2) {
            qfprintf(stdout, "[...]");
          }
          qfprintf(stdout, "\n");
        }

        else if (strcmp(args[0], "nameserver") == 0) {
          qfprintf(stdout, "%s %s %s ", args[0],
            HA_ANON_ID(g_key, args[1]), hash_ipanon(g_key, args[2], 1));
          if (arg > 3) {
            qfprintf(stdout, "[...]");
          }
          qfprintf(stdout, "\n");
        }

        else if (strcmp(args[0], "http-request") == 0) {
          qfprintf(stdout, "%s %s ", args[0], args[1]);
          if (arg > 2)
            qfprintf(stdout, "[...]");
          qfprintf(stdout, "\n");
        }

        else if (strcmp(args[0], "http-response") == 0) {
          qfprintf(stdout, "%s %s ", args[0], args[1]);
          if (arg > 2)
            qfprintf(stdout, "[...]");
          qfprintf(stdout, "\n");
        }

        else if (strcmp(args[0], "http-after-response") == 0) {
          qfprintf(stdout, "%s %s ", args[0], args[1]);
          if (arg > 2)
            qfprintf(stdout, "[...]");
          qfprintf(stdout, "\n");
        }

        else if (strcmp(args[0], "filter") == 0) {
          qfprintf(stdout, "%s %s ", args[0], args[1]);
          if (arg > 2)
            qfprintf(stdout, "[...]");
          qfprintf(stdout, "\n");
        }

        else if (strcmp(args[0], "errorfile") == 0) {
          qfprintf(stdout, "%s %s %s\n", args[0], args[1], HA_ANON_PATH(g_key, args[2]));
        }

        else if (strcmp(args[0], "cookie") == 0) {
          qfprintf(stdout, "%s %s ", args[0], HA_ANON_ID(g_key, args[1]));
          if (arg > 2)
            qfprintf(stdout, "%s ", args[2]);
          if (arg > 3)
            qfprintf(stdout, "[...]");
          qfprintf(stdout, "\n");
        }

        else if (strcmp(args[0], "stats") == 0 && strcmp(args[1], "auth") == 0) {
          qfprintf(stdout, "%s %s %s\n", args[0], args[1], HA_ANON_STR(g_key, args[2]));
        }

        else {
          /* display up to 3 words and mask the rest which might be confidential */
          for (i = 0; i < MIN(arg, 3); i++) {
            qfprintf(stdout, "%s ", args[i]);
          }
          if (arg > 3) {
            qfprintf(stdout, "[...]");
          }
          qfprintf(stdout, "\n");
        }
      }
      continue;
    }
    /* end of config dump */

    /* empty line */
    if (!**args)
      continue;

    /* check for config macros */
    if (*args[0] == '.') {
      if (strcmp(args[0], ".if") == 0) {
        const char *errptr = NULL;
        char *errmsg = NULL;
        int cond;
        char *w;

        /* remerge all words into a single expression */
        for (w = *args; (w += strlen(w)) < outline + outlen - 1; *w = ' ')
          ;

        nested_cond_lvl++;
        if (nested_cond_lvl >= MAXNESTEDCONDS) {
          ha_alert("parsing [%s:%d]: too many nested '.if', max is %d.\n", file, linenum, MAXNESTEDCONDS);
          err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
          goto err;
        }

        if (nested_cond_lvl > 1 &&
            (nested_conds[nested_cond_lvl - 1] == NESTED_COND_IF_DROP ||
             nested_conds[nested_cond_lvl - 1] == NESTED_COND_IF_SKIP ||
             nested_conds[nested_cond_lvl - 1] == NESTED_COND_ELIF_DROP ||
             nested_conds[nested_cond_lvl - 1] == NESTED_COND_ELIF_SKIP ||
             nested_conds[nested_cond_lvl - 1] == NESTED_COND_ELSE_DROP)) {
          nested_conds[nested_cond_lvl] = NESTED_COND_IF_SKIP;
          goto next_line;
        }

        cond = cfg_eval_condition(args + 1, &errmsg, &errptr);
        if (cond < 0) {
          size_t newpos = sanitize_for_printing(args[1], errptr - args[1], 76);

          ha_alert("parsing [%s:%d]: %s in '.if' at position %d:\n  .if %s\n  %*s\n",
             file, linenum, errmsg,
                   (int)(errptr-args[1]+1), args[1], (int)(newpos+5), "^");

          free(errmsg);
          err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
          goto err;
        }

        if (cond)
          nested_conds[nested_cond_lvl] = NESTED_COND_IF_TAKE;
        else
          nested_conds[nested_cond_lvl] = NESTED_COND_IF_DROP;

        goto next_line;
      }
      else if (strcmp(args[0], ".elif") == 0) {
        const char *errptr = NULL;
        char *errmsg = NULL;
        int cond;
        char *w;

        /* remerge all words into a single expression */
        for (w = *args; (w += strlen(w)) < outline + outlen - 1; *w = ' ')
          ;

        if (!nested_cond_lvl) {
          ha_alert("parsing [%s:%d]: lone '.elif' with no matching '.if'.\n", file, linenum);
          err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
          goto err;
        }

        if (nested_conds[nested_cond_lvl] == NESTED_COND_ELSE_TAKE ||
            nested_conds[nested_cond_lvl] == NESTED_COND_ELSE_DROP) {
          ha_alert("parsing [%s:%d]: '.elif' after '.else' is not permitted.\n", file, linenum);
          err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
          goto err;
        }

        if (nested_conds[nested_cond_lvl] == NESTED_COND_IF_TAKE ||
            nested_conds[nested_cond_lvl] == NESTED_COND_IF_SKIP ||
            nested_conds[nested_cond_lvl] == NESTED_COND_ELIF_TAKE ||
            nested_conds[nested_cond_lvl] == NESTED_COND_ELIF_SKIP) {
          nested_conds[nested_cond_lvl] = NESTED_COND_ELIF_SKIP;
          goto next_line;
        }

        cond = cfg_eval_condition(args + 1, &errmsg, &errptr);
        if (cond < 0) {
          size_t newpos = sanitize_for_printing(args[1], errptr - args[1], 74);

          ha_alert("parsing [%s:%d]: %s in '.elif' at position %d:\n  .elif %s\n  %*s\n",
             file, linenum, errmsg,
                   (int)(errptr-args[1]+1), args[1], (int)(newpos+7), "^");

          free(errmsg);
          err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
          goto err;
        }

        if (cond)
          nested_conds[nested_cond_lvl] = NESTED_COND_ELIF_TAKE;
        else
          nested_conds[nested_cond_lvl] = NESTED_COND_ELIF_DROP;

        goto next_line;
      }
      else if (strcmp(args[0], ".else") == 0) {
        if (*args[1]) {
          ha_alert("parsing [%s:%d]: Unexpected argument '%s' for '%s'.\n",
                   file, linenum, args[1], args[0]);
          err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
          break;
        }

        if (!nested_cond_lvl) {
          ha_alert("parsing [%s:%d]: lone '.else' with no matching '.if'.\n", file, linenum);
          err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
          goto err;
        }

        if (nested_conds[nested_cond_lvl] == NESTED_COND_ELSE_TAKE ||
            nested_conds[nested_cond_lvl] == NESTED_COND_ELSE_DROP) {
          ha_alert("parsing [%s:%d]: '.else' after '.else' is not permitted.\n", file, linenum);
          err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
          goto err;
        }

        if (nested_conds[nested_cond_lvl] == NESTED_COND_IF_TAKE ||
            nested_conds[nested_cond_lvl] == NESTED_COND_IF_SKIP ||
            nested_conds[nested_cond_lvl] == NESTED_COND_ELIF_TAKE ||
            nested_conds[nested_cond_lvl] == NESTED_COND_ELIF_SKIP) {
          nested_conds[nested_cond_lvl] = NESTED_COND_ELSE_DROP;
        } else {
          /* otherwise we take the "else" */
          nested_conds[nested_cond_lvl] = NESTED_COND_ELSE_TAKE;
        }
        goto next_line;
      }
      else if (strcmp(args[0], ".endif") == 0) {
        if (*args[1]) {
          ha_alert("parsing [%s:%d]: Unexpected argument '%s' for '%s'.\n",
                   file, linenum, args[1], args[0]);
          err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
          break;
        }

        if (!nested_cond_lvl) {
          ha_alert("parsing [%s:%d]: lone '.endif' with no matching '.if'.\n", file, linenum);
          err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
          break;
        }
        nested_cond_lvl--;
        goto next_line;
      }
    }

    if (nested_cond_lvl &&
        (nested_conds[nested_cond_lvl] == NESTED_COND_IF_DROP ||
         nested_conds[nested_cond_lvl] == NESTED_COND_IF_SKIP ||
         nested_conds[nested_cond_lvl] == NESTED_COND_ELIF_DROP ||
         nested_conds[nested_cond_lvl] == NESTED_COND_ELIF_SKIP ||
         nested_conds[nested_cond_lvl] == NESTED_COND_ELSE_DROP)) {
      /* The current block is masked out by the conditions */
      goto next_line;
    }

    /* .warning/.error/.notice/.diag */
    if (*args[0] == '.') {
      if (strcmp(args[0], ".alert") == 0) {
        if (*args[2]) {
          ha_alert("parsing [%s:%d]: Unexpected argument '%s' for '%s'. Use quotes if the message should contain spaces.\n",
                     file, linenum, args[2], args[0]);
          err_code |= ERR_ALERT | ERR_FATAL;
          goto next_line;
        }

        ha_alert("parsing [%s:%d]: '%s'.\n", file, linenum, args[1]);
        err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
        goto err;
      }
      else if (strcmp(args[0], ".warning") == 0) {
        if (*args[2]) {
          ha_alert("parsing [%s:%d]: Unexpected argument '%s' for '%s'. Use quotes if the message should contain spaces.\n",
                     file, linenum, args[2], args[0]);
          err_code |= ERR_ALERT | ERR_FATAL;
          goto next_line;
        }

        ha_warning("parsing [%s:%d]: '%s'.\n", file, linenum, args[1]);
        err_code |= ERR_WARN;
        goto next_line;
      }
      else if (strcmp(args[0], ".notice") == 0) {
        if (*args[2]) {
          ha_alert("parsing [%s:%d]: Unexpected argument '%s' for '%s'. Use quotes if the message should contain spaces.\n",
                   file, linenum, args[2], args[0]);
          err_code |= ERR_ALERT | ERR_FATAL;
          goto next_line;
        }

        ha_notice("parsing [%s:%d]: '%s'.\n", file, linenum, args[1]);
        goto next_line;
      }
      else if (strcmp(args[0], ".diag") == 0) {
        if (*args[2]) {
          ha_alert("parsing [%s:%d]: Unexpected argument '%s' for '%s'. Use quotes if the message should contain spaces.\n",
                   file, linenum, args[2], args[0]);
          err_code |= ERR_ALERT | ERR_FATAL;
          goto next_line;
        }

        ha_diag_warning("parsing [%s:%d]: '%s'.\n", file, linenum, args[1]);
        goto next_line;
      }
      else {
        ha_alert("parsing [%s:%d]: unknown directive '%s'.\n", file, linenum, args[0]);
        err_code |= ERR_ALERT | ERR_FATAL;
        fatal++;
        break;
      }
    }

    /* check for keyword modifiers "no" and "default" */
    if (strcmp(args[0], "no") == 0) {
      char *tmp;

      kwm = KWM_NO;
      tmp = args[0];
      for (arg=0; *args[arg+1]; arg++)
        args[arg] = args[arg+1];   // shift args after inversion
      *tmp = '\0';          // fix the next arg to \0
      args[arg] = tmp;
    }
    else if (strcmp(args[0], "default") == 0) {
      kwm = KWM_DEF;
      for (arg=0; *args[arg+1]; arg++)
        args[arg] = args[arg+1];   // shift args after inversion
    }

    if (kwm != KWM_STD && strcmp(args[0], "option") != 0 &&
        strcmp(args[0], "log") != 0 && strcmp(args[0], "busy-polling") != 0 &&
        strcmp(args[0], "set-dumpable") != 0 && strcmp(args[0], "strict-limits") != 0 &&
        strcmp(args[0], "insecure-fork-wanted") != 0 &&
        strcmp(args[0], "numa-cpu-mapping") != 0) {
      ha_alert("parsing [%s:%d]: negation/default currently "
         "supported only for options, log, busy-polling, "
         "set-dumpable, strict-limits, insecure-fork-wanted "
         "and numa-cpu-mapping.\n", file, linenum);
      err_code |= ERR_ALERT | ERR_FATAL;
      fatal++;
    }

    /* detect section start */
    list_for_each_entry(ics, &sections, list) {
      if (strcmp(args[0], ics->section_name) == 0) {
        cursection = ics->section_name;
        pcs = cs;
        cs = ics;
        free(global.cfg_curr_section);
        global.cfg_curr_section = strdup(*args[1] ? args[1] : args[0]);
        check_section_position(args[0], file, linenum);
        break;
      }
    }

    if (pcs && pcs->post_section_parser) {
      int status;

      status = pcs->post_section_parser();
      err_code |= status;
      if (status & ERR_FATAL)
        fatal++;

      if (err_code & ERR_ABORT)
        goto err;
    }
    pcs = NULL;

    if (!cs) {
      ha_alert("parsing [%s:%d]: unknown keyword '%s' out of section.\n", file, linenum, args[0]);
      err_code |= ERR_ALERT | ERR_FATAL;
      fatal++;
    } else {
      int status;

      status = cs->section_parser(file, linenum, args, kwm);
      err_code |= status;
      if (status & ERR_FATAL)
        fatal++;

      if (err_code & ERR_ABORT)
        goto err;
    }
  }

  if (missing_lf != -1) {
    ha_alert("parsing [%s:%d]: Missing LF on last line, file might have been truncated at position %d.\n",
             file, linenum, (missing_lf + 1));
    err_code |= ERR_ALERT | ERR_FATAL;
  }

  ha_free(&global.cfg_curr_section);
  if (cs && cs->post_section_parser)
    err_code |= cs->post_section_parser();

  if (nested_cond_lvl) {
    ha_alert("parsing [%s:%d]: non-terminated '.if' block.\n", file, linenum);
    err_code |= ERR_ALERT | ERR_FATAL | ERR_ABORT;
  }

  if (*initial_cwd && chdir(initial_cwd) == -1) {
    ha_alert("Impossible to get back to initial directory '%s' : %s\n", initial_cwd, strerror(errno));
    err_code |= ERR_ALERT | ERR_FATAL;
  }

err:
  ha_free(&cfg_scope);
  cursection = NULL;
  free(thisline);
  free(outline);
  global.cfg_curr_line = 0;
  global.cfg_curr_file = NULL;

  if (f)
    fclose(f);

  return err_code;
}

#if defined(USE_THREAD) && defined USE_CPU_AFFINITY
#if defined(__linux__)

/* filter directory name of the pattern node<X> */
static int numa_filter(const struct dirent *dir)
{
  char *endptr;

  /* dir name must start with "node" prefix */
  if (strncmp(dir->d_name, "node", 4))
    return 0;

  /* dir name must be at least 5 characters long */
  if (!dir->d_name[4])
    return 0;

  /* dir name must end with a numeric id */
  if (strtol(&dir->d_name[4], &endptr, 10) < 0 || *endptr)
    return 0;

  /* all tests succeeded */
  return 1;
}

/* Inspect the cpu topology of the machine on startup. If a multi-socket
 * machine is detected, try to bind on the first node with active cpu. This is
 * done to prevent an impact on the overall performance when the topology of
 * the machine is unknown. This function is not called if one of the conditions
 * is met :
 * - a non-null nbthread directive is active
 * - a restrictive cpu-map directive is active
 * - a restrictive affinity is already applied, for example via taskset
 *
 * Returns the count of cpus selected. If no automatic binding was required or
 * an error occurred and the topology is unknown, 0 is returned.
 */
static int numa_detect_topology()
{
  struct dirent **node_dirlist;
  int node_dirlist_size;

  struct hap_cpuset active_cpus, node_cpu_set;
  const char *parse_cpu_set_args[2];
  char *err = NULL;
  int grp, thr;

  /* node_cpu_set count is used as return value */
  ha_cpuset_zero(&node_cpu_set);

  /* 1. count the sysfs node<X> directories */
  node_dirlist = NULL;
  node_dirlist_size = scandir(NUMA_DETECT_SYSTEM_SYSFS_PATH"/node", &node_dirlist, numa_filter, alphasort);
  if (node_dirlist_size <= 1)
    goto free_scandir_entries;

  /* 2. read and parse the list of currently online cpu */
  if (read_line_to_trash("%s/cpu/online", NUMA_DETECT_SYSTEM_SYSFS_PATH) < 0) {
    ha_notice("Cannot read online CPUs list, will not try to refine binding\n");
    goto free_scandir_entries;
  }

  parse_cpu_set_args[0] = trash.area;
  parse_cpu_set_args[1] = "\0";
  if (parse_cpu_set(parse_cpu_set_args, &active_cpus, &err) != 0) {
    ha_notice("Cannot read online CPUs list: '%s'. Will not try to refine binding\n", err);
    free(err);
    goto free_scandir_entries;
  }

  /* 3. loop through nodes dirs and find the first one with active cpus */
  while (node_dirlist_size--) {
    const char *node = node_dirlist[node_dirlist_size]->d_name;
    ha_cpuset_zero(&node_cpu_set);

    if (read_line_to_trash("%s/node/%s/cpumap", NUMA_DETECT_SYSTEM_SYSFS_PATH, node) < 0) {
      ha_notice("Cannot read CPUs list of '%s', will not select them to refine binding\n", node);
      free(node_dirlist[node_dirlist_size]);
      continue;
    }

    parse_cpumap(trash.area, &node_cpu_set);
    ha_cpuset_and(&node_cpu_set, &active_cpus);

    /* 5. set affinity on the first found node with active cpus */
    if (!ha_cpuset_count(&node_cpu_set)) {
      free(node_dirlist[node_dirlist_size]);
      continue;
    }

    ha_diag_warning("Multi-socket cpu detected, automatically binding on active CPUs of '%s' (%u active cpu(s))\n", node, ha_cpuset_count(&node_cpu_set));
    for (grp = 0; grp < MAX_TGROUPS; grp++)
      for (thr = 0; thr < MAX_THREADS_PER_GROUP; thr++)
        ha_cpuset_assign(&cpu_map[grp].thread[thr], &node_cpu_set);

    free(node_dirlist[node_dirlist_size]);
    break;
  }

 free_scandir_entries:
  while (node_dirlist_size-- > 0)
    free(node_dirlist[node_dirlist_size]);
  free(node_dirlist);

  return ha_cpuset_count(&node_cpu_set);
}

#elif defined(__FreeBSD__)
static int numa_detect_topology()
{
  struct hap_cpuset node_cpu_set;
  int ndomains = 0, i;
  size_t len = sizeof(ndomains);
  int grp, thr;

  if (sysctlbyname("vm.ndomains", &ndomains, &len, NULL, 0) == -1) {
    ha_notice("Cannot assess the number of CPUs domains\n");
    return 0;
  }

  BUG_ON(ndomains > MAXMEMDOM);
  ha_cpuset_zero(&node_cpu_set);

  if (ndomains < 2)
    goto leave;

  /*
   * We retrieve the first active valid CPU domain
   * with active cpu and binding it, we returns
   * the number of cpu from the said domain
   */
  for (i = 0; i < ndomains; i ++) {
    struct hap_cpuset dom;
    ha_cpuset_zero(&dom);
    if (cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_DOMAIN, i, sizeof(dom.cpuset), &dom.cpuset) == -1)
      continue;

    if (!ha_cpuset_count(&dom))
      continue;

    ha_cpuset_assign(&node_cpu_set, &dom);

    ha_diag_warning("Multi-socket cpu detected, automatically binding on active CPUs of '%d' (%u active cpu(s))\n", i, ha_cpuset_count(&node_cpu_set));
    for (grp = 0; grp < MAX_TGROUPS; grp++)
      for (thr = 0; thr < MAX_THREADS_PER_GROUP; thr++)
        ha_cpuset_assign(&cpu_map[grp].thread[thr], &node_cpu_set);
    break;
  }
 leave:
  return ha_cpuset_count(&node_cpu_set);
}

#else
static int numa_detect_topology()
{
  return 0;
}

#endif
#endif /* USE_THREAD && USE_CPU_AFFINITY */

/*
 * Returns the error code, 0 if OK, or any combination of :
 *  - ERR_ABORT: must abort ASAP
 *  - ERR_FATAL: we can continue parsing but not start the service
 *  - ERR_WARN: a warning has been emitted
 *  - ERR_ALERT: an alert has been emitted
 * Only the two first ones can stop processing, the two others are just
 * indicators.
 */
int check_config_validity()
{
  int cfgerr = 0;
  struct proxy *curproxy = NULL;
  struct proxy *init_proxies_list = NULL;
  struct stktable *t;
  struct server *newsrv = NULL;
  int err_code = 0;
  unsigned int next_pxid = 1;
  struct bind_conf *bind_conf;
  char *err;
  struct cfg_postparser *postparser;
  struct resolvers *curr_resolvers = NULL;
  int i;

  bind_conf = NULL;
  /*
   * Now, check for the integrity of all that we have collected.
   */

  if (!global.tune.max_http_hdr)
    global.tune.max_http_hdr = MAX_HTTP_HDR;

  if (!global.tune.cookie_len)
    global.tune.cookie_len = CAPTURE_LEN;

  if (!global.tune.requri_len)
    global.tune.requri_len = REQURI_LEN;

  if (!global.nbthread) {
    /* nbthread not set, thus automatic. In this case, and only if
     * running on a single process, we enable the same number of
     * threads as the number of CPUs the process is bound to. This
     * allows to easily control the number of threads using taskset.
     */
    global.nbthread = 1;

#if defined(USE_THREAD)
    {
      int numa_cores = 0;
#if defined(USE_CPU_AFFINITY)
      if (global.numa_cpu_mapping && !thread_cpu_mask_forced() && !cpu_map_configured())
        numa_cores = numa_detect_topology();
#endif
      global.nbthread = numa_cores ? numa_cores :
                                     thread_cpus_enabled_at_boot;

      /* Note that we cannot have more than 32 or 64 threads per group */
      if (!global.nbtgroups)
        global.nbtgroups = 1;

      if (global.nbthread > MAX_THREADS_PER_GROUP * global.nbtgroups) {
        ha_diag_warning("nbthread not set, found %d CPUs, limiting to %d threads (maximum is %d per thread group). Please set nbthreads and/or increase thread-groups in the global section to silence this warning.\n",
             global.nbthread, MAX_THREADS_PER_GROUP * global.nbtgroups, MAX_THREADS_PER_GROUP);
        global.nbthread = MAX_THREADS_PER_GROUP * global.nbtgroups;
      }
    }
#endif
  }

  if (!global.nbtgroups)
    global.nbtgroups = 1;

  if (thread_map_to_groups() < 0) {
    err_code |= ERR_ALERT | ERR_FATAL;
    goto out;
  }

  pool_head_requri = create_pool("requri", global.tune.requri_len , MEM_F_SHARED);

  pool_head_capture = create_pool("capture", global.tune.cookie_len, MEM_F_SHARED);

  /* Post initialisation of the users and groups lists. */
  err_code = userlist_postinit();
  if (err_code != ERR_NONE)
    goto out;

  /* first, we will invert the proxy list order */
  curproxy = NULL;
  while (proxies_list) {
    struct proxy *next;

    next = proxies_list->next;
    proxies_list->next = curproxy;
    curproxy = proxies_list;
    if (!next)
      break;
    proxies_list = next;
  }

  /* starting to initialize the main proxies list */
  init_proxies_list = proxies_list;

init_proxies_list_stage1:
  for (curproxy = init_proxies_list; curproxy; curproxy = curproxy->next) {
    struct switching_rule *rule;
    struct server_rule *srule;
    struct sticking_rule *mrule;
    struct logger *tmplogger;
    unsigned int next_id;

    if (!(curproxy->cap & PR_CAP_INT) && curproxy->uuid < 0) {
      /* proxy ID not set, use automatic numbering with first
       * spare entry starting with next_pxid. We don't assign
       * numbers for internal proxies as they may depend on
       * build or config options and we don't want them to
       * possibly reuse existing IDs.
       */
      next_pxid = get_next_id(&used_proxy_id, next_pxid);
      curproxy->conf.id.key = curproxy->uuid = next_pxid;
      eb32_insert(&used_proxy_id, &curproxy->conf.id);
    }

    if (curproxy->mode == PR_MODE_HTTP && global.tune.bufsize >= (256 << 20) && ONLY_ONCE()) {
      ha_alert("global.tune.bufsize must be below 256 MB when HTTP is in use (current value = %d).\n",
         global.tune.bufsize);
      cfgerr++;
    }

    /* next IDs are shifted even if the proxy is disabled, this
     * guarantees that a proxy that is temporarily disabled in the
     * configuration doesn't cause a renumbering. Internal proxies
     * that are not assigned a static ID must never shift the IDs
     * either since they may appear in any order (Lua, logs, etc).
     * The GLOBAL proxy that carries the stats socket has its ID
     * forced to zero.
     */
    if (curproxy->uuid >= 0)
      next_pxid++;

    if (curproxy->flags & PR_FL_DISABLED) {
      /* ensure we don't keep listeners uselessly bound. We
       * can't disable their listeners yet (fdtab not
       * allocated yet) but let's skip them.
       */
      if (curproxy->table) {
        ha_free(&curproxy->table->peers.name);
        curproxy->table->peers.p = NULL;
      }
      continue;
    }

    /* The current proxy is referencing a default proxy. We must
     * finalize its config, but only once. If the default proxy is
     * ready (PR_FL_READY) it means it was already fully configured.
     */
    if (curproxy->defpx) {
      if (!(curproxy->defpx->flags & PR_FL_READY)) {
        /* check validity for 'tcp-request' layer 4/5/6/7 rules */
        cfgerr += check_action_rules(&curproxy->defpx->tcp_req.l4_rules, curproxy->defpx, &err_code);
        cfgerr += check_action_rules(&curproxy->defpx->tcp_req.l5_rules, curproxy->defpx, &err_code);
        cfgerr += check_action_rules(&curproxy->defpx->tcp_req.inspect_rules, curproxy->defpx, &err_code);
        cfgerr += check_action_rules(&curproxy->defpx->tcp_rep.inspect_rules, curproxy->defpx, &err_code);
        cfgerr += check_action_rules(&curproxy->defpx->http_req_rules, curproxy->defpx, &err_code);
        cfgerr += check_action_rules(&curproxy->defpx->http_res_rules, curproxy->defpx, &err_code);
        cfgerr += check_action_rules(&curproxy->defpx->http_after_res_rules, curproxy->defpx, &err_code);

        err = NULL;
        i = smp_resolve_args(curproxy->defpx, &err);
        cfgerr += i;
        if (i) {
          indent_msg(&err, 8);
          ha_alert("%s%s\n", i > 1 ? "multiple argument resolution errors:" : "", err);
          ha_free(&err);
        }
        else
          cfgerr += acl_find_targets(curproxy->defpx);

        /* default proxy is now ready. Set the right FE/BE capabilities */
        curproxy->defpx->flags |= PR_FL_READY;
      }
    }

    /* check and reduce the bind-proc of each listener */
    list_for_each_entry(bind_conf, &curproxy->conf.bind, by_fe) {
      int ret;

      /* HTTP frontends with "h2" as ALPN/NPN will work in
       * HTTP/2 and absolutely require buffers 16kB or larger.
       */
#ifdef USE_OPENSSL
      /* no-alpn ? If so, it's the right moment to remove it */
      if (bind_conf->ssl_conf.alpn_str && !bind_conf->ssl_conf.alpn_len) {
        free(bind_conf->ssl_conf.alpn_str);
        bind_conf->ssl_conf.alpn_str = NULL;
      }
#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
      else if (!bind_conf->ssl_conf.alpn_str && !bind_conf->ssl_conf.npn_str &&
         ((bind_conf->options & BC_O_USE_SSL) || bind_conf->xprt == xprt_get(XPRT_QUIC)) &&
         curproxy->mode == PR_MODE_HTTP && global.tune.bufsize >= 16384) {

        /* Neither ALPN nor NPN were explicitly set nor disabled, we're
         * in HTTP mode with an SSL or QUIC listener, we can enable ALPN.
         * Note that it's in binary form.
         */
        if (bind_conf->xprt == xprt_get(XPRT_QUIC))
          bind_conf->ssl_conf.alpn_str = strdup("\002h3");
        else
          bind_conf->ssl_conf.alpn_str = strdup("\002h2\010http/1.1");

        if (!bind_conf->ssl_conf.alpn_str) {
          ha_alert("Proxy '%s': out of memory while trying to allocate a default alpn string in 'bind %s' at [%s:%d].\n",
             curproxy->id, bind_conf->arg, bind_conf->file, bind_conf->line);
          cfgerr++;
          err_code |= ERR_FATAL | ERR_ALERT;
          goto out;
        }
        bind_conf->ssl_conf.alpn_len = strlen(bind_conf->ssl_conf.alpn_str);
      }
#endif

      if (curproxy->mode == PR_MODE_HTTP && global.tune.bufsize < 16384) {
#ifdef OPENSSL_NPN_NEGOTIATED
        /* check NPN */
        if (bind_conf->ssl_conf.npn_str && strstr(bind_conf->ssl_conf.npn_str, "\002h2")) {
          ha_alert("HTTP frontend '%s' enables HTTP/2 via NPN at [%s:%d], so global.tune.bufsize must be at least 16384 bytes (%d now).\n",
             curproxy->id, bind_conf->file, bind_conf->line, global.tune.bufsize);
          cfgerr++;
        }
#endif
#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
        /* check ALPN */
        if (bind_conf->ssl_conf.alpn_str && strstr(bind_conf->ssl_conf.alpn_str, "\002h2")) {
          ha_alert("HTTP frontend '%s' enables HTTP/2 via ALPN at [%s:%d], so global.tune.bufsize must be at least 16384 bytes (%d now).\n",
             curproxy->id, bind_conf->file, bind_conf->line, global.tune.bufsize);
          cfgerr++;
        }
#endif
      } /* HTTP && bufsize < 16384 */
#endif

      /* finish the bind setup */
      ret = bind_complete_thread_setup(bind_conf, &err_code);
      if (ret != 0) {
        cfgerr += ret;
        if (err_code & ERR_FATAL)
          goto out;
      }
    }

    switch (curproxy->mode) {
    case PR_MODE_TCP:
      cfgerr += proxy_cfg_ensure_no_http(curproxy);
      cfgerr += proxy_cfg_ensure_no_log(curproxy);
      break;

    case PR_MODE_HTTP:
      cfgerr += proxy_cfg_ensure_no_log(curproxy);
      curproxy->http_needed = 1;
      break;

    case PR_MODE_CLI:
      cfgerr += proxy_cfg_ensure_no_http(curproxy);
      cfgerr += proxy_cfg_ensure_no_log(curproxy);
      break;

    case PR_MODE_SYSLOG:
      /* this mode is initialized as the classic tcp proxy */
      cfgerr += proxy_cfg_ensure_no_http(curproxy);
      break;

    case PR_MODE_PEERS:
    case PR_MODES:
      /* should not happen, bug gcc warn missing switch statement */
      ha_alert("%s '%s' cannot initialize this proxy mode (peers) in this way. NOTE: PLEASE REPORT THIS TO DEVELOPERS AS YOU'RE NOT SUPPOSED TO BE ABLE TO CREATE A CONFIGURATION TRIGGERING THIS!\n",
         proxy_type_str(curproxy), curproxy->id);
      cfgerr++;
      break;
    }

    if (!(curproxy->cap & PR_CAP_INT) && (curproxy->cap & PR_CAP_FE) && LIST_ISEMPTY(&curproxy->conf.listeners)) {
      ha_warning("%s '%s' has no 'bind' directive. Please declare it as a backend if this was intended.\n",
           proxy_type_str(curproxy), curproxy->id);
      err_code |= ERR_WARN;
    }

    if (curproxy->cap & PR_CAP_BE) {
      if (curproxy->lbprm.algo & BE_LB_KIND) {
        if (curproxy->options & PR_O_TRANSP) {
          ha_alert("%s '%s' cannot use both transparent and balance mode.\n",
             proxy_type_str(curproxy), curproxy->id);
          cfgerr++;
        }
#ifdef WE_DONT_SUPPORT_SERVERLESS_LISTENERS
        else if (curproxy->srv == NULL) {
          ha_alert("%s '%s' needs at least 1 server in balance mode.\n",
             proxy_type_str(curproxy), curproxy->id);
          cfgerr++;
        }
#endif
        else if (curproxy->options & PR_O_DISPATCH) {
          ha_warning("dispatch address of %s '%s' will be ignored in balance mode.\n",
               proxy_type_str(curproxy), curproxy->id);
          err_code |= ERR_WARN;
        }
      }
      else if (!(curproxy->options & (PR_O_TRANSP | PR_O_DISPATCH))) {
        /* If no LB algo is set in a backend, and we're not in
         * transparent mode, dispatch mode nor proxy mode, we
         * want to use balance roundrobin by default.
         */
        curproxy->lbprm.algo &= ~BE_LB_ALGO;
        curproxy->lbprm.algo |= BE_LB_ALGO_RR;
      }
    }

    if (curproxy->options & PR_O_DISPATCH)
      curproxy->options &= ~PR_O_TRANSP;
    else if (curproxy->options & PR_O_TRANSP)
      curproxy->options &= ~PR_O_DISPATCH;

    if ((curproxy->tcpcheck_rules.flags & TCPCHK_RULES_UNUSED_HTTP_RS)) {
      ha_warning("%s '%s' uses http-check rules without 'option httpchk', so the rules are ignored.\n",
           proxy_type_str(curproxy), curproxy->id);
      err_code |= ERR_WARN;
    }

    if ((curproxy->options2 & PR_O2_CHK_ANY) == PR_O2_TCPCHK_CHK &&
        (curproxy->tcpcheck_rules.flags & TCPCHK_RULES_PROTO_CHK) != TCPCHK_RULES_HTTP_CHK) {
      if (curproxy->options & PR_O_DISABLE404) {
        ha_warning("'%s' will be ignored for %s '%s' (requires 'option httpchk').\n",
             "disable-on-404", proxy_type_str(curproxy), curproxy->id);
        err_code |= ERR_WARN;
        curproxy->options &= ~PR_O_DISABLE404;
      }
      if (curproxy->options2 & PR_O2_CHK_SNDST) {
        ha_warning("'%s' will be ignored for %s '%s' (requires 'option httpchk').\n",
             "send-state", proxy_type_str(curproxy), curproxy->id);
        err_code |= ERR_WARN;
        curproxy->options &= ~PR_O2_CHK_SNDST;
      }
    }

    if ((curproxy->options2 & PR_O2_CHK_ANY) == PR_O2_EXT_CHK) {
      if (!global.external_check) {
        ha_alert("Proxy '%s' : '%s' unable to find required 'global.external-check'.\n",
           curproxy->id, "option external-check");
        cfgerr++;
      }
      if (!curproxy->check_command) {
        ha_alert("Proxy '%s' : '%s' unable to find required 'external-check command'.\n",
           curproxy->id, "option external-check");
        cfgerr++;
      }
      if (!(global.tune.options & GTUNE_INSECURE_FORK)) {
        ha_warning("Proxy '%s' : 'insecure-fork-wanted' not enabled in the global section, '%s' will likely fail.\n",
           curproxy->id, "option external-check");
        err_code |= ERR_WARN;
      }
    }

    if (curproxy->email_alert.set) {
        if (!(curproxy->email_alert.mailers.name && curproxy->email_alert.from && curproxy->email_alert.to)) {
          ha_warning("'email-alert' will be ignored for %s '%s' (the presence any of "
               "'email-alert from', 'email-alert level' 'email-alert mailers', "
               "'email-alert myhostname', or 'email-alert to' "
               "requires each of 'email-alert from', 'email-alert mailers' and 'email-alert to' "
               "to be present).\n",
               proxy_type_str(curproxy), curproxy->id);
          err_code |= ERR_WARN;
          free_email_alert(curproxy);
        }
        if (!curproxy->email_alert.myhostname)
          curproxy->email_alert.myhostname = strdup(hostname);
    }

    if (curproxy->check_command) {
      int clear = 0;
      if ((curproxy->options2 & PR_O2_CHK_ANY) != PR_O2_EXT_CHK) {
        ha_warning("'%s' will be ignored for %s '%s' (requires 'option external-check').\n",
             "external-check command", proxy_type_str(curproxy), curproxy->id);
        err_code |= ERR_WARN;
        clear = 1;
      }
      if (curproxy->check_command[0] != '/' && !curproxy->check_path) {
        ha_alert("Proxy '%s': '%s' does not have a leading '/' and 'external-check path' is not set.\n",
           curproxy->id, "external-check command");
        cfgerr++;
      }
      if (clear) {
        ha_free(&curproxy->check_command);
      }
    }

    if (curproxy->check_path) {
      if ((curproxy->options2 & PR_O2_CHK_ANY) != PR_O2_EXT_CHK) {
        ha_warning("'%s' will be ignored for %s '%s' (requires 'option external-check').\n",
             "external-check path", proxy_type_str(curproxy), curproxy->id);
        err_code |= ERR_WARN;
        ha_free(&curproxy->check_path);
      }
    }

    /* if a default backend was specified, let's find it */
    if (curproxy->defbe.name) {
      struct proxy *target;

      target = proxy_be_by_name(curproxy->defbe.name);
      if (!target) {
        ha_alert("Proxy '%s': unable to find required default_backend: '%s'.\n",
           curproxy->id, curproxy->defbe.name);
        cfgerr++;
      } else if (target == curproxy) {
        ha_alert("Proxy '%s': loop detected for default_backend: '%s'.\n",
           curproxy->id, curproxy->defbe.name);
        cfgerr++;
      } else if (target->mode != curproxy->mode &&
           !(curproxy->mode == PR_MODE_TCP && target->mode == PR_MODE_HTTP)) {

        ha_alert("%s %s '%s' (%s:%d) tries to use incompatible %s %s '%s' (%s:%d) as its default backend (see 'mode').\n",
           proxy_mode_str(curproxy->mode), proxy_type_str(curproxy), curproxy->id,
           curproxy->conf.file, curproxy->conf.line,
           proxy_mode_str(target->mode), proxy_type_str(target), target->id,
           target->conf.file, target->conf.line);
        cfgerr++;
      } else {
        free(curproxy->defbe.name);
        curproxy->defbe.be = target;
        /* Emit a warning if this proxy also has some servers */
        if (curproxy->srv) {
          ha_warning("In proxy '%s', the 'default_backend' rule always has precedence over the servers, which will never be used.\n",
               curproxy->id);
          err_code |= ERR_WARN;
        }
      }
    }

    /* find the target proxy for 'use_backend' rules */
    list_for_each_entry(rule, &curproxy->switching_rules, list) {
      struct proxy *target;
      struct logformat_node *node;
      char *pxname;

      /* Try to parse the string as a log format expression. If the result
       * of the parsing is only one entry containing a simple string, then
       * it's a standard string corresponding to a static rule, thus the
       * parsing is cancelled and be.name is restored to be resolved.
       */
      pxname = rule->be.name;
      LIST_INIT(&rule->be.expr);
      curproxy->conf.args.ctx = ARGC_UBK;
      curproxy->conf.args.file = rule->file;
      curproxy->conf.args.line = rule->line;
      err = NULL;
      if (!parse_logformat_string(pxname, curproxy, &rule->be.expr, 0, SMP_VAL_FE_HRQ_HDR, &err)) {
        ha_alert("Parsing [%s:%d]: failed to parse use_backend rule '%s' : %s.\n",
           rule->file, rule->line, pxname, err);
        free(err);
        cfgerr++;
        continue;
      }
      node = LIST_NEXT(&rule->be.expr, struct logformat_node *, list);

      if (!LIST_ISEMPTY(&rule->be.expr)) {
        if (node->type != LOG_FMT_TEXT || node->list.n != &rule->be.expr) {
          rule->dynamic = 1;
          free(pxname);
          continue;
        }
        /* Only one element in the list, a simple string: free the expression and
         * fall back to static rule
         */
        LIST_DELETE(&node->list);
        free(node->arg);
        free(node);
      }

      rule->dynamic = 0;
      rule->be.name = pxname;

      target = proxy_be_by_name(rule->be.name);
      if (!target) {
        ha_alert("Proxy '%s': unable to find required use_backend: '%s'.\n",
           curproxy->id, rule->be.name);
        cfgerr++;
      } else if (target == curproxy) {
        ha_alert("Proxy '%s': loop detected for use_backend: '%s'.\n",
           curproxy->id, rule->be.name);
        cfgerr++;
      } else if (target->mode != curproxy->mode &&
           !(curproxy->mode == PR_MODE_TCP && target->mode == PR_MODE_HTTP)) {

        ha_alert("%s %s '%s' (%s:%d) tries to use incompatible %s %s '%s' (%s:%d) in a 'use_backend' rule (see 'mode').\n",
           proxy_mode_str(curproxy->mode), proxy_type_str(curproxy), curproxy->id,
           curproxy->conf.file, curproxy->conf.line,
           proxy_mode_str(target->mode), proxy_type_str(target), target->id,
           target->conf.file, target->conf.line);
        cfgerr++;
      } else {
        ha_free(&rule->be.name);
        rule->be.backend = target;
      }
      err_code |= warnif_tcp_http_cond(curproxy, rule->cond);
    }

    /* find the target server for 'use_server' rules */
    list_for_each_entry(srule, &curproxy->server_rules, list) {
      struct server *target;
      struct logformat_node *node;
      char *server_name;

      /* We try to parse the string as a log format expression. If the result of the parsing
       * is only one entry containing a single string, then it's a standard string corresponding
       * to a static rule, thus the parsing is cancelled and we fall back to setting srv.ptr.
       */
      server_name = srule->srv.name;
      LIST_INIT(&srule->expr);
      curproxy->conf.args.ctx = ARGC_USRV;
      err = NULL;
      if (!parse_logformat_string(server_name, curproxy, &srule->expr, 0, SMP_VAL_FE_HRQ_HDR, &err)) {
        ha_alert("Parsing [%s:%d]; use-server rule failed to parse log-format '%s' : %s.\n",
            srule->file, srule->line, server_name, err);
        free(err);
        cfgerr++;
        continue;
      }
      node = LIST_NEXT(&srule->expr, struct logformat_node *, list);

      if (!LIST_ISEMPTY(&srule->expr)) {
        if (node->type != LOG_FMT_TEXT || node->list.n != &srule->expr) {
          srule->dynamic = 1;
          free(server_name);
          continue;
        }
        /* Only one element in the list, a simple string: free the expression and
         * fall back to static rule
         */
        LIST_DELETE(&node->list);
        free(node->arg);
        free(node);
      }

      srule->dynamic = 0;
      srule->srv.name = server_name;
      target = findserver(curproxy, srule->srv.name);
      err_code |= warnif_tcp_http_cond(curproxy, srule->cond);

      if (!target) {
        ha_alert("%s '%s' : unable to find server '%s' referenced in a 'use-server' rule.\n",
           proxy_type_str(curproxy), curproxy->id, srule->srv.name);
        cfgerr++;
        continue;
      }
      ha_free(&srule->srv.name);
      srule->srv.ptr = target;
      target->flags |= SRV_F_NON_PURGEABLE;
    }

    /* find the target table for 'stick' rules */
    list_for_each_entry(mrule, &curproxy->sticking_rules, list) {
      curproxy->be_req_ana |= AN_REQ_STICKING_RULES;
      if (mrule->flags & STK_IS_STORE)
        curproxy->be_rsp_ana |= AN_RES_STORE_RULES;

      if (!resolve_stick_rule(curproxy, mrule))
        cfgerr++;

      err_code |= warnif_tcp_http_cond(curproxy, mrule->cond);
    }

    /* find the target table for 'store response' rules */
    list_for_each_entry(mrule, &curproxy->storersp_rules, list) {
      curproxy->be_rsp_ana |= AN_RES_STORE_RULES;

      if (!resolve_stick_rule(curproxy, mrule))
        cfgerr++;
    }

    /* check validity for 'tcp-request' layer 4/5/6/7 rules */
    cfgerr += check_action_rules(&curproxy->tcp_req.l4_rules, curproxy, &err_code);
    cfgerr += check_action_rules(&curproxy->tcp_req.l5_rules, curproxy, &err_code);
    cfgerr += check_action_rules(&curproxy->tcp_req.inspect_rules, curproxy, &err_code);
    cfgerr += check_action_rules(&curproxy->tcp_rep.inspect_rules, curproxy, &err_code);
    cfgerr += check_action_rules(&curproxy->http_req_rules, curproxy, &err_code);
    cfgerr += check_action_rules(&curproxy->http_res_rules, curproxy, &err_code);
    cfgerr += check_action_rules(&curproxy->http_after_res_rules, curproxy, &err_code);

    /* Warn is a switch-mode http is used on a TCP listener with servers but no backend */
    if (!curproxy->defbe.name && LIST_ISEMPTY(&curproxy->switching_rules) && curproxy->srv) {
      if ((curproxy->options & PR_O_HTTP_UPG) && curproxy->mode == PR_MODE_TCP)
        ha_warning("Proxy '%s' : 'switch-mode http' configured for a %s %s with no backend. "
             "Incoming connections upgraded to HTTP cannot be routed to TCP servers\n",
             curproxy->id, proxy_mode_str(curproxy->mode), proxy_type_str(curproxy));
    }

    if (curproxy->table && curproxy->table->peers.name) {
      struct peers *curpeers;

      for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
        if (strcmp(curpeers->id, curproxy->table->peers.name) == 0) {
          ha_free(&curproxy->table->peers.name);
          curproxy->table->peers.p = curpeers;
          break;
        }
      }

      if (!curpeers) {
        ha_alert("Proxy '%s': unable to find sync peers '%s'.\n",
           curproxy->id, curproxy->table->peers.name);
        ha_free(&curproxy->table->peers.name);
        curproxy->table->peers.p = NULL;
        cfgerr++;
      }
      else if (curpeers->disabled) {
        /* silently disable this peers section */
        curproxy->table->peers.p = NULL;
      }
      else if (!curpeers->peers_fe) {
        ha_alert("Proxy '%s': unable to find local peer '%s' in peers section '%s'.\n",
           curproxy->id, localpeer, curpeers->id);
        curproxy->table->peers.p = NULL;
        cfgerr++;
      }
    }


    if (curproxy->email_alert.mailers.name) {
      struct mailers *curmailers = mailers;

      for (curmailers = mailers; curmailers; curmailers = curmailers->next) {
        if (strcmp(curmailers->id, curproxy->email_alert.mailers.name) == 0)
          break;
      }
      if (!curmailers) {
        ha_alert("Proxy '%s': unable to find mailers '%s'.\n",
           curproxy->id, curproxy->email_alert.mailers.name);
        free_email_alert(curproxy);
        cfgerr++;
      }
      else {
        err = NULL;
        if (init_email_alert(curmailers, curproxy, &err)) {
          ha_alert("Proxy '%s': %s.\n", curproxy->id, err);
          free(err);
          cfgerr++;
        }
      }
    }

    if (curproxy->uri_auth && !(curproxy->uri_auth->flags & STAT_CONVDONE) &&
        !LIST_ISEMPTY(&curproxy->uri_auth->http_req_rules) &&
        (curproxy->uri_auth->userlist || curproxy->uri_auth->auth_realm )) {
      ha_alert("%s '%s': stats 'auth'/'realm' and 'http-request' can't be used at the same time.\n",
         "proxy", curproxy->id);
      cfgerr++;
      goto out_uri_auth_compat;
    }

    if (curproxy->uri_auth && curproxy->uri_auth->userlist &&
        (!(curproxy->uri_auth->flags & STAT_CONVDONE) ||
         LIST_ISEMPTY(&curproxy->uri_auth->http_req_rules))) {
      const char *uri_auth_compat_req[10];
      struct act_rule *rule;
      i = 0;

      /* build the ACL condition from scratch. We're relying on anonymous ACLs for that */
      uri_auth_compat_req[i++] = "auth";

      if (curproxy->uri_auth->auth_realm) {
        uri_auth_compat_req[i++] = "realm";
        uri_auth_compat_req[i++] = curproxy->uri_auth->auth_realm;
      }

      uri_auth_compat_req[i++] = "unless";
      uri_auth_compat_req[i++] = "{";
      uri_auth_compat_req[i++] = "http_auth(.internal-stats-userlist)";
      uri_auth_compat_req[i++] = "}";
      uri_auth_compat_req[i++] = "";

      rule = parse_http_req_cond(uri_auth_compat_req, "internal-stats-auth-compat", 0, curproxy);
      if (!rule) {
        cfgerr++;
        break;
      }

      LIST_APPEND(&curproxy->uri_auth->http_req_rules, &rule->list);

      if (curproxy->uri_auth->auth_realm) {
        ha_free(&curproxy->uri_auth->auth_realm);
      }
      curproxy->uri_auth->flags |= STAT_CONVDONE;
    }
out_uri_auth_compat:

    /* check whether we have a logger that uses RFC5424 log format */
    list_for_each_entry(tmplogger, &curproxy->loggers, list) {
      if (tmplogger->format == LOG_FORMAT_RFC5424) {
        if (!curproxy->conf.logformat_sd_string) {
          /* set the default logformat_sd_string */
          curproxy->conf.logformat_sd_string = default_rfc5424_sd_log_format;
        }
        break;
      }
    }

    /* compile the log format */
    if (!(curproxy->cap & PR_CAP_FE)) {
      if (curproxy->conf.logformat_string != default_http_log_format &&
          curproxy->conf.logformat_string != default_tcp_log_format &&
          curproxy->conf.logformat_string != clf_http_log_format)
        free(curproxy->conf.logformat_string);
      curproxy->conf.logformat_string = NULL;
      ha_free(&curproxy->conf.lfs_file);
      curproxy->conf.lfs_line = 0;

      if (curproxy->conf.logformat_sd_string != default_rfc5424_sd_log_format)
        free(curproxy->conf.logformat_sd_string);
      curproxy->conf.logformat_sd_string = NULL;
      ha_free(&curproxy->conf.lfsd_file);
      curproxy->conf.lfsd_line = 0;
    }

    if (curproxy->conf.logformat_string) {
      curproxy->conf.args.ctx = ARGC_LOG;
      curproxy->conf.args.file = curproxy->conf.lfs_file;
      curproxy->conf.args.line = curproxy->conf.lfs_line;
      err = NULL;
      if (!parse_logformat_string(curproxy->conf.logformat_string, curproxy, &curproxy->logformat,
                                  LOG_OPT_MANDATORY|LOG_OPT_MERGE_SPACES,
                                  SMP_VAL_FE_LOG_END, &err)) {
        ha_alert("Parsing [%s:%d]: failed to parse log-format : %s.\n",
           curproxy->conf.lfs_file, curproxy->conf.lfs_line, err);
        free(err);
        cfgerr++;
      }
      curproxy->conf.args.file = NULL;
      curproxy->conf.args.line = 0;
    }

    if (curproxy->conf.logformat_sd_string) {
      curproxy->conf.args.ctx = ARGC_LOGSD;
      curproxy->conf.args.file = curproxy->conf.lfsd_file;
      curproxy->conf.args.line = curproxy->conf.lfsd_line;
      err = NULL;
      if (!parse_logformat_string(curproxy->conf.logformat_sd_string, curproxy, &curproxy->logformat_sd,
                                  LOG_OPT_MANDATORY|LOG_OPT_MERGE_SPACES,
                                  SMP_VAL_FE_LOG_END, &err)) {
        ha_alert("Parsing [%s:%d]: failed to parse log-format-sd : %s.\n",
           curproxy->conf.lfs_file, curproxy->conf.lfs_line, err);
        free(err);
        cfgerr++;
      } else if (!add_to_logformat_list(NULL, NULL, LF_SEPARATOR, &curproxy->logformat_sd, &err)) {
        ha_alert("Parsing [%s:%d]: failed to parse log-format-sd : %s.\n",
           curproxy->conf.lfs_file, curproxy->conf.lfs_line, err);
        free(err);
        cfgerr++;
      }
      curproxy->conf.args.file = NULL;
      curproxy->conf.args.line = 0;
    }

    if (curproxy->conf.uniqueid_format_string) {
      int where = 0;

      curproxy->conf.args.ctx = ARGC_UIF;
      curproxy->conf.args.file = curproxy->conf.uif_file;
      curproxy->conf.args.line = curproxy->conf.uif_line;
      err = NULL;
      if (curproxy->cap & PR_CAP_FE)
        where |= SMP_VAL_FE_HRQ_HDR;
      if (curproxy->cap & PR_CAP_BE)
        where |= SMP_VAL_BE_HRQ_HDR;
      if (!parse_logformat_string(curproxy->conf.uniqueid_format_string, curproxy, &curproxy->format_unique_id,
                                  LOG_OPT_HTTP|LOG_OPT_MERGE_SPACES, where, &err)) {
        ha_alert("Parsing [%s:%d]: failed to parse unique-id : %s.\n",
           curproxy->conf.uif_file, curproxy->conf.uif_line, err);
        free(err);
        cfgerr++;
      }
      curproxy->conf.args.file = NULL;
      curproxy->conf.args.line = 0;
    }

    if (curproxy->conf.error_logformat_string) {
      curproxy->conf.args.ctx = ARGC_LOG;
      curproxy->conf.args.file = curproxy->conf.elfs_file;
      curproxy->conf.args.line = curproxy->conf.elfs_line;
      err = NULL;
      if (!parse_logformat_string(curproxy->conf.error_logformat_string, curproxy, &curproxy->logformat_error,
                                  LOG_OPT_MANDATORY|LOG_OPT_MERGE_SPACES,
                                  SMP_VAL_FE_LOG_END, &err)) {
        ha_alert("Parsing [%s:%d]: failed to parse error-log-format : %s.\n",
           curproxy->conf.elfs_file, curproxy->conf.elfs_line, err);
        free(err);
        cfgerr++;
      }
      curproxy->conf.args.file = NULL;
      curproxy->conf.args.line = 0;
    }

    /* "balance hash" needs to compile its expression
     * (log backends will handle this in proxy log postcheck)
     */
    if (curproxy->mode != PR_MODE_SYSLOG &&
        (curproxy->lbprm.algo & BE_LB_ALGO) == BE_LB_ALGO_SMP) {
      int idx = 0;
      const char *args[] = {
        curproxy->lbprm.arg_str,
        NULL,
      };

      err = NULL;
      curproxy->conf.args.ctx = ARGC_USRV; // same context as use_server.
      curproxy->lbprm.expr =
        sample_parse_expr((char **)args, &idx,
              curproxy->conf.file, curproxy->conf.line,
              &err, &curproxy->conf.args, NULL);

      if (!curproxy->lbprm.expr) {
        ha_alert("%s '%s' [%s:%d]: failed to parse 'balance hash' expression '%s' in : %s.\n",
           proxy_type_str(curproxy), curproxy->id,
           curproxy->conf.file, curproxy->conf.line,
           curproxy->lbprm.arg_str, err);
        ha_free(&err);
        cfgerr++;
      }
      else if (!(curproxy->lbprm.expr->fetch->val & SMP_VAL_BE_SET_SRV)) {
        ha_alert("%s '%s' [%s:%d]: error detected while parsing 'balance hash' expression '%s' "
           "which requires information from %s, which is not available here.\n",
           proxy_type_str(curproxy), curproxy->id,
           curproxy->conf.file, curproxy->conf.line,
           curproxy->lbprm.arg_str, sample_src_names(curproxy->lbprm.expr->fetch->use));
        cfgerr++;
      }
      else if (curproxy->mode == PR_MODE_HTTP && (curproxy->lbprm.expr->fetch->use & SMP_USE_L6REQ)) {
        ha_warning("%s '%s' [%s:%d]: L6 sample fetch <%s> will be ignored in 'balance hash' expression in HTTP mode.\n",
             proxy_type_str(curproxy), curproxy->id,
             curproxy->conf.file, curproxy->conf.line,
             curproxy->lbprm.arg_str);
      }
      else
        curproxy->http_needed |= !!(curproxy->lbprm.expr->fetch->use & SMP_USE_HTTP_ANY);
    }

    /* only now we can check if some args remain unresolved.
     * This must be done after the users and groups resolution.
     */
    err = NULL;
    i = smp_resolve_args(curproxy, &err);
    cfgerr += i;
    if (i) {
      indent_msg(&err, 8);
      ha_alert("%s%s\n", i > 1 ? "multiple argument resolution errors:" : "", err);
      ha_free(&err);
    } else
      cfgerr += acl_find_targets(curproxy);

    if (!(curproxy->cap & PR_CAP_INT) && (curproxy->mode == PR_MODE_TCP || curproxy->mode == PR_MODE_HTTP) &&
        (((curproxy->cap & PR_CAP_FE) && !curproxy->timeout.client) ||
         ((curproxy->cap & PR_CAP_BE) && (curproxy->srv) &&
          (!curproxy->timeout.connect ||
           (!curproxy->timeout.server && (curproxy->mode == PR_MODE_HTTP || !curproxy->timeout.tunnel)))))) {
      ha_warning("missing timeouts for %s '%s'.\n"
           "   | While not properly invalid, you will certainly encounter various problems\n"
           "   | with such a configuration. To fix this, please ensure that all following\n"
           "   | timeouts are set to a non-zero value: 'client', 'connect', 'server'.\n",
           proxy_type_str(curproxy), curproxy->id);
      err_code |= ERR_WARN;
    }

    /* Historically, the tarpit and queue timeouts were inherited from contimeout.
     * We must still support older configurations, so let's find out whether those
     * parameters have been set or must be copied from contimeouts.
     */
    if (!curproxy->timeout.tarpit)
      curproxy->timeout.tarpit = curproxy->timeout.connect;
    if ((curproxy->cap & PR_CAP_BE) && !curproxy->timeout.queue)
      curproxy->timeout.queue = curproxy->timeout.connect;

    if ((curproxy->tcpcheck_rules.flags & TCPCHK_RULES_UNUSED_TCP_RS)) {
      ha_warning("%s '%s' uses tcp-check rules without 'option tcp-check', so the rules are ignored.\n",
           proxy_type_str(curproxy), curproxy->id);
      err_code |= ERR_WARN;
    }

    /* ensure that cookie capture length is not too large */
    if (curproxy->capture_len >= global.tune.cookie_len) {
      ha_warning("truncating capture length to %d bytes for %s '%s'.\n",
           global.tune.cookie_len - 1, proxy_type_str(curproxy), curproxy->id);
      err_code |= ERR_WARN;
      curproxy->capture_len = global.tune.cookie_len - 1;
    }

    /* The small pools required for the capture lists */
    if (curproxy->nb_req_cap) {
      curproxy->req_cap_pool = create_pool("ptrcap",
                                           curproxy->nb_req_cap * sizeof(char *),
                                           MEM_F_SHARED);
    }

    if (curproxy->nb_rsp_cap) {
      curproxy->rsp_cap_pool = create_pool("ptrcap",
                                           curproxy->nb_rsp_cap * sizeof(char *),
                                           MEM_F_SHARED);
    }

    switch (curproxy->load_server_state_from_file) {
      case PR_SRV_STATE_FILE_UNSPEC:
        curproxy->load_server_state_from_file = PR_SRV_STATE_FILE_NONE;
        break;
      case PR_SRV_STATE_FILE_GLOBAL:
        if (!global.server_state_file) {
          ha_warning("backend '%s' configured to load server state file from global section 'server-state-file' directive. Unfortunately, 'server-state-file' is not set!\n",
               curproxy->id);
          err_code |= ERR_WARN;
        }
        break;
    }

    /* first, we will invert the servers list order */
    newsrv = NULL;
    while (curproxy->srv) {
      struct server *next;

      next = curproxy->srv->next;
      curproxy->srv->next = newsrv;
      newsrv = curproxy->srv;
      if (!next)
        break;
      curproxy->srv = next;
    }

    /* Check that no server name conflicts. This causes trouble in the stats.
     * We only emit a warning for the first conflict affecting each server,
     * in order to avoid combinatory explosion if all servers have the same
     * name. We do that only for servers which do not have an explicit ID,
     * because these IDs were made also for distinguishing them and we don't
     * want to annoy people who correctly manage them.
     */
    for (newsrv = curproxy->srv; newsrv; newsrv = newsrv->next) {
      struct server *other_srv;

      if (newsrv->puid)
        continue;

      for (other_srv = curproxy->srv; other_srv && other_srv != newsrv; other_srv = other_srv->next) {
        if (!other_srv->puid && strcmp(other_srv->id, newsrv->id) == 0) {
          ha_alert("parsing [%s:%d] : %s '%s', another server named '%s' was already defined at line %d, please use distinct names.\n",
               newsrv->conf.file, newsrv->conf.line,
               proxy_type_str(curproxy), curproxy->id,
               newsrv->id, other_srv->conf.line);
          cfgerr++;
          break;
        }
      }
    }

    /* assign automatic UIDs to servers which don't have one yet */
    next_id = 1;
    newsrv = curproxy->srv;
    while (newsrv != NULL) {
      if (!newsrv->puid) {
        /* server ID not set, use automatic numbering with first
         * spare entry starting with next_svid.
         */
        next_id = get_next_id(&curproxy->conf.used_server_id, next_id);
        newsrv->conf.id.key = newsrv->puid = next_id;
        eb32_insert(&curproxy->conf.used_server_id, &newsrv->conf.id);
      }
      newsrv->conf.name.key = newsrv->id;
      ebis_insert(&curproxy->conf.used_server_name, &newsrv->conf.name);

      next_id++;
      newsrv = newsrv->next;
    }

    curproxy->lbprm.wmult = 1; /* default weight multiplier */
    curproxy->lbprm.wdiv  = 1; /* default weight divider */

    /*
     * If this server supports a maxconn parameter, it needs a dedicated
     * tasks to fill the emptied slots when a connection leaves.
     * Also, resolve deferred tracking dependency if needed.
     */
    newsrv = curproxy->srv;
    while (newsrv != NULL) {
      set_usermsgs_ctx(newsrv->conf.file, newsrv->conf.line, &newsrv->obj_type);

      srv_minmax_conn_apply(newsrv);

      /* this will also properly set the transport layer for
       * prod and checks
       * if default-server have use_ssl, prerare ssl init
       * without activating it */
      if (newsrv->use_ssl == 1 || newsrv->check.use_ssl == 1 ||
          (newsrv->proxy->options & PR_O_TCPCHK_SSL) ||
          ((newsrv->flags & SRV_F_DEFSRV_USE_SSL) && newsrv->use_ssl != 1)) {
        if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->prepare_srv)
          cfgerr += xprt_get(XPRT_SSL)->prepare_srv(newsrv);
      }

      if ((newsrv->flags & SRV_F_FASTOPEN) &&
          ((curproxy->retry_type & (PR_RE_DISCONNECTED | PR_RE_TIMEOUT)) !=
           (PR_RE_DISCONNECTED | PR_RE_TIMEOUT)))
        ha_warning("server has tfo activated, the backend should be configured with at least 'conn-failure', 'empty-response' and 'response-timeout' or we wouldn't be able to retry the connection on failure.\n");

      if (newsrv->trackit) {
        if (srv_apply_track(newsrv, curproxy)) {
          ++cfgerr;
          goto next_srv;
        }
      }

    next_srv:
      reset_usermsgs_ctx();
      newsrv = newsrv->next;
    }

    /*
     * Try to generate dynamic cookies for servers now.
     * It couldn't be done earlier, since at the time we parsed
     * the server line, we may not have known yet that we
     * should use dynamic cookies, or the secret key may not
     * have been provided yet.
     */
    if (curproxy->ck_opts & PR_CK_DYNAMIC) {
      newsrv = curproxy->srv;
      while (newsrv != NULL) {
        srv_set_dyncookie(newsrv);
        newsrv = newsrv->next;
      }

    }
    /* We have to initialize the server lookup mechanism depending
     * on what LB algorithm was chosen.
     */

    if (curproxy->mode == PR_MODE_SYSLOG) {
      /* log load-balancing requires special init that is performed
       * during log-postparsing step
       */
      goto skip_server_lb_init;
    }
    curproxy->lbprm.algo &= ~(BE_LB_LKUP | BE_LB_PROP_DYN);
    switch (curproxy->lbprm.algo & BE_LB_KIND) {
    case BE_LB_KIND_RR:
      if ((curproxy->lbprm.algo & BE_LB_PARM) == BE_LB_RR_STATIC) {
        curproxy->lbprm.algo |= BE_LB_LKUP_MAP;
        init_server_map(curproxy);
      } else if ((curproxy->lbprm.algo & BE_LB_PARM) == BE_LB_RR_RANDOM) {
        curproxy->lbprm.algo |= BE_LB_LKUP_CHTREE | BE_LB_PROP_DYN;
        if (chash_init_server_tree(curproxy) < 0) {
          cfgerr++;
        }
      } else {
        curproxy->lbprm.algo |= BE_LB_LKUP_RRTREE | BE_LB_PROP_DYN;
        fwrr_init_server_groups(curproxy);
      }
      break;

    case BE_LB_KIND_CB:
      if ((curproxy->lbprm.algo & BE_LB_PARM) == BE_LB_CB_LC) {
        curproxy->lbprm.algo |= BE_LB_LKUP_LCTREE | BE_LB_PROP_DYN;
        fwlc_init_server_tree(curproxy);
      } else {
        curproxy->lbprm.algo |= BE_LB_LKUP_FSTREE | BE_LB_PROP_DYN;
        fas_init_server_tree(curproxy);
      }
      break;

    case BE_LB_KIND_HI:
      if ((curproxy->lbprm.algo & BE_LB_HASH_TYPE) == BE_LB_HASH_CONS) {
        curproxy->lbprm.algo |= BE_LB_LKUP_CHTREE | BE_LB_PROP_DYN;
        if (chash_init_server_tree(curproxy) < 0) {
          cfgerr++;
        }
      } else {
        curproxy->lbprm.algo |= BE_LB_LKUP_MAP;
        init_server_map(curproxy);
      }
      break;
    }
 skip_server_lb_init:
    HA_RWLOCK_INIT(&curproxy->lbprm.lock);

    if (curproxy->options & PR_O_LOGASAP)
      curproxy->to_log &= ~LW_BYTES;

    if (!(curproxy->cap & PR_CAP_INT) && (curproxy->mode == PR_MODE_TCP || curproxy->mode == PR_MODE_HTTP) &&
        (curproxy->cap & PR_CAP_FE) && LIST_ISEMPTY(&curproxy->loggers) &&
        (!LIST_ISEMPTY(&curproxy->logformat) || !LIST_ISEMPTY(&curproxy->logformat_sd))) {
      ha_warning("log format ignored for %s '%s' since it has no log address.\n",
           proxy_type_str(curproxy), curproxy->id);
      err_code |= ERR_WARN;
    }

    if (curproxy->mode != PR_MODE_HTTP && !(curproxy->options & PR_O_HTTP_UPG)) {
      int optnum;

      if (curproxy->uri_auth) {
        ha_warning("'stats' statement ignored for %s '%s' as it requires HTTP mode.\n",
             proxy_type_str(curproxy), curproxy->id);
        err_code |= ERR_WARN;
        curproxy->uri_auth = NULL;
      }

      if (curproxy->capture_name) {
        ha_warning("'capture' statement ignored for %s '%s' as it requires HTTP mode.\n",
             proxy_type_str(curproxy), curproxy->id);
        err_code |= ERR_WARN;
      }

      if (!LIST_ISEMPTY(&curproxy->http_req_rules)) {
        ha_warning("'http-request' rules ignored for %s '%s' as they require HTTP mode.\n",
             proxy_type_str(curproxy), curproxy->id);
        err_code |= ERR_WARN;
      }

      if (!LIST_ISEMPTY(&curproxy->http_res_rules)) {
        ha_warning("'http-response' rules ignored for %s '%s' as they require HTTP mode.\n",
             proxy_type_str(curproxy), curproxy->id);
        err_code |= ERR_WARN;
      }

      if (!LIST_ISEMPTY(&curproxy->http_after_res_rules)) {
        ha_warning("'http-after-response' rules ignored for %s '%s' as they require HTTP mode.\n",
             proxy_type_str(curproxy), curproxy->id);
        err_code |= ERR_WARN;
      }

      if (!LIST_ISEMPTY(&curproxy->redirect_rules)) {
        ha_warning("'redirect' rules ignored for %s '%s' as they require HTTP mode.\n",
             proxy_type_str(curproxy), curproxy->id);
        err_code |= ERR_WARN;
      }

      for (optnum = 0; cfg_opts[optnum].name; optnum++) {
        if (cfg_opts[optnum].mode == PR_MODE_HTTP &&
            (curproxy->cap & cfg_opts[optnum].cap) &&
            (curproxy->options & cfg_opts[optnum].val)) {
          ha_warning("'option %s' ignored for %s '%s' as it requires HTTP mode.\n",
               cfg_opts[optnum].name, proxy_type_str(curproxy), curproxy->id);
          err_code |= ERR_WARN;
          curproxy->options &= ~cfg_opts[optnum].val;
        }
      }

      for (optnum = 0; cfg_opts2[optnum].name; optnum++) {
        if (cfg_opts2[optnum].mode == PR_MODE_HTTP &&
            (curproxy->cap & cfg_opts2[optnum].cap) &&
            (curproxy->options2 & cfg_opts2[optnum].val)) {
          ha_warning("'option %s' ignored for %s '%s' as it requires HTTP mode.\n",
               cfg_opts2[optnum].name, proxy_type_str(curproxy), curproxy->id);
          err_code |= ERR_WARN;
          curproxy->options2 &= ~cfg_opts2[optnum].val;
        }
      }

#if defined(CONFIG_HAP_TRANSPARENT)
      if (curproxy->conn_src.bind_hdr_occ) {
        curproxy->conn_src.bind_hdr_occ = 0;
        ha_warning("%s '%s' : ignoring use of header %s as source IP in non-HTTP mode.\n",
             proxy_type_str(curproxy), curproxy->id, curproxy->conn_src.bind_hdr_name);
        err_code |= ERR_WARN;
      }
#endif
    }

    /*
     * ensure that we're not cross-dressing a TCP server into HTTP.
     */
    newsrv = curproxy->srv;
    while (newsrv != NULL) {
      if ((curproxy->mode != PR_MODE_HTTP) && newsrv->rdr_len) {
        ha_alert("%s '%s' : server cannot have cookie or redirect prefix in non-HTTP mode.\n",
           proxy_type_str(curproxy), curproxy->id);
        cfgerr++;
      }

      if ((curproxy->mode != PR_MODE_HTTP) && newsrv->cklen) {
        ha_warning("%s '%s' : ignoring cookie for server '%s' as HTTP mode is disabled.\n",
             proxy_type_str(curproxy), curproxy->id, newsrv->id);
        err_code |= ERR_WARN;
      }

      if ((newsrv->flags & SRV_F_MAPPORTS) && (curproxy->options2 & PR_O2_RDPC_PRST)) {
        ha_warning("%s '%s' : RDP cookie persistence will not work for server '%s' because it lacks an explicit port number.\n",
             proxy_type_str(curproxy), curproxy->id, newsrv->id);
        err_code |= ERR_WARN;
      }

#if defined(CONFIG_HAP_TRANSPARENT)
      if (curproxy->mode != PR_MODE_HTTP && newsrv->conn_src.bind_hdr_occ) {
        newsrv->conn_src.bind_hdr_occ = 0;
        ha_warning("%s '%s' : server %s cannot use header %s as source IP in non-HTTP mode.\n",
             proxy_type_str(curproxy), curproxy->id, newsrv->id, newsrv->conn_src.bind_hdr_name);
        err_code |= ERR_WARN;
      }
#endif

      if ((curproxy->mode != PR_MODE_HTTP) && (curproxy->options & PR_O_REUSE_MASK) != PR_O_REUSE_NEVR)
        curproxy->options &= ~PR_O_REUSE_MASK;

      if ((curproxy->mode != PR_MODE_HTTP) && newsrv->flags & SRV_F_REVERSE) {
        ha_alert("%s '%s' : server %s uses reverse addressing which can only be used with HTTP mode.\n",
             proxy_type_str(curproxy), curproxy->id, newsrv->id);
        cfgerr++;
        err_code |= ERR_FATAL | ERR_ALERT;
        goto out;
      }

      newsrv = newsrv->next;
    }

    /* Check filter configuration, if any */
    cfgerr += flt_check(curproxy);

    if (curproxy->cap & PR_CAP_FE) {
      if (!curproxy->accept)
        curproxy->accept = frontend_accept;

      if (!LIST_ISEMPTY(&curproxy->tcp_req.inspect_rules) ||
          (curproxy->defpx && !LIST_ISEMPTY(&curproxy->defpx->tcp_req.inspect_rules)))
        curproxy->fe_req_ana |= AN_REQ_INSPECT_FE;

      if (curproxy->mode == PR_MODE_HTTP) {
        curproxy->fe_req_ana |= AN_REQ_WAIT_HTTP | AN_REQ_HTTP_PROCESS_FE;
        curproxy->fe_rsp_ana |= AN_RES_WAIT_HTTP | AN_RES_HTTP_PROCESS_FE;
      }

      if (curproxy->mode == PR_MODE_CLI) {
        curproxy->fe_req_ana |= AN_REQ_WAIT_CLI;
        curproxy->fe_rsp_ana |= AN_RES_WAIT_CLI;
      }

      /* both TCP and HTTP must check switching rules */
      curproxy->fe_req_ana |= AN_REQ_SWITCHING_RULES;

      /* Add filters analyzers if needed */
      if (!LIST_ISEMPTY(&curproxy->filter_configs)) {
        curproxy->fe_req_ana |= AN_REQ_FLT_START_FE | AN_REQ_FLT_XFER_DATA | AN_REQ_FLT_END;
        curproxy->fe_rsp_ana |= AN_RES_FLT_START_FE | AN_RES_FLT_XFER_DATA | AN_RES_FLT_END;
      }
    }

    if (curproxy->cap & PR_CAP_BE) {
      if (!LIST_ISEMPTY(&curproxy->tcp_req.inspect_rules) ||
          (curproxy->defpx && !LIST_ISEMPTY(&curproxy->defpx->tcp_req.inspect_rules)))
        curproxy->be_req_ana |= AN_REQ_INSPECT_BE;

      if (!LIST_ISEMPTY(&curproxy->tcp_rep.inspect_rules) ||
          (curproxy->defpx && !LIST_ISEMPTY(&curproxy->defpx->tcp_rep.inspect_rules)))
                                curproxy->be_rsp_ana |= AN_RES_INSPECT;

      if (curproxy->mode == PR_MODE_HTTP) {
        curproxy->be_req_ana |= AN_REQ_WAIT_HTTP | AN_REQ_HTTP_INNER | AN_REQ_HTTP_PROCESS_BE;
        curproxy->be_rsp_ana |= AN_RES_WAIT_HTTP | AN_RES_HTTP_PROCESS_BE;
      }

      /* If the backend does requires RDP cookie persistence, we have to
       * enable the corresponding analyser.
       */
      if (curproxy->options2 & PR_O2_RDPC_PRST)
        curproxy->be_req_ana |= AN_REQ_PRST_RDP_COOKIE;

      /* Add filters analyzers if needed */
      if (!LIST_ISEMPTY(&curproxy->filter_configs)) {
        curproxy->be_req_ana |= AN_REQ_FLT_START_BE | AN_REQ_FLT_XFER_DATA | AN_REQ_FLT_END;
        curproxy->be_rsp_ana |= AN_RES_FLT_START_BE | AN_RES_FLT_XFER_DATA | AN_RES_FLT_END;
      }
    }

    /* Check the mux protocols, if any, for each listener and server
     * attached to the current proxy */
    list_for_each_entry(bind_conf, &curproxy->conf.bind, by_fe) {
      int mode = conn_pr_mode_to_proto_mode(curproxy->mode);
      const struct mux_proto_list *mux_ent;

      if (!bind_conf->mux_proto) {
        /* No protocol was specified. If we're using QUIC at the transport
         * layer, we'll instantiate it as a mux as well. If QUIC is not
         * compiled in, this will remain NULL.
         */
        if (bind_conf->xprt && bind_conf->xprt == xprt_get(XPRT_QUIC))
          bind_conf->mux_proto = get_mux_proto(ist("quic"));
      }

      if (!bind_conf->mux_proto)
        continue;

      /* it is possible that an incorrect mux was referenced
       * due to the proxy's mode not being taken into account
       * on first pass. Let's adjust it now.
       */
      mux_ent = conn_get_best_mux_entry(bind_conf->mux_proto->token, PROTO_SIDE_FE, mode);

      if (!mux_ent || !isteq(mux_ent->token, bind_conf->mux_proto->token)) {
        ha_alert("%s '%s' : MUX protocol '%.*s' is not usable for 'bind %s' at [%s:%d].\n",
           proxy_type_str(curproxy), curproxy->id,
           (int)bind_conf->mux_proto->token.len,
           bind_conf->mux_proto->token.ptr,
           bind_conf->arg, bind_conf->file, bind_conf->line);
        cfgerr++;
      } else {
        if ((mux_ent->mux->flags & MX_FL_FRAMED) && !(bind_conf->options & BC_O_USE_SOCK_DGRAM)) {
          ha_alert("%s '%s' : frame-based MUX protocol '%.*s' is incompatible with stream transport of 'bind %s' at [%s:%d].\n",
             proxy_type_str(curproxy), curproxy->id,
             (int)bind_conf->mux_proto->token.len,
             bind_conf->mux_proto->token.ptr,
             bind_conf->arg, bind_conf->file, bind_conf->line);
          cfgerr++;
        }
        else if (!(mux_ent->mux->flags & MX_FL_FRAMED) && !(bind_conf->options & BC_O_USE_SOCK_STREAM)) {
          ha_alert("%s '%s' : stream-based MUX protocol '%.*s' is incompatible with framed transport of 'bind %s' at [%s:%d].\n",
             proxy_type_str(curproxy), curproxy->id,
             (int)bind_conf->mux_proto->token.len,
             bind_conf->mux_proto->token.ptr,
             bind_conf->arg, bind_conf->file, bind_conf->line);
          cfgerr++;
        }
      }

      /* update the mux */
      bind_conf->mux_proto = mux_ent;
    }
    for (newsrv = curproxy->srv; newsrv; newsrv = newsrv->next) {
      int mode = conn_pr_mode_to_proto_mode(curproxy->mode);
      const struct mux_proto_list *mux_ent;

      if (!newsrv->mux_proto)
        continue;

      /* it is possible that an incorrect mux was referenced
       * due to the proxy's mode not being taken into account
       * on first pass. Let's adjust it now.
       */
      mux_ent = conn_get_best_mux_entry(newsrv->mux_proto->token, PROTO_SIDE_BE, mode);

      if (!mux_ent || !isteq(mux_ent->token, newsrv->mux_proto->token)) {
        ha_alert("%s '%s' : MUX protocol '%.*s' is not usable for server '%s' at [%s:%d].\n",
           proxy_type_str(curproxy), curproxy->id,
           (int)newsrv->mux_proto->token.len,
           newsrv->mux_proto->token.ptr,
           newsrv->id, newsrv->conf.file, newsrv->conf.line);
        cfgerr++;
      }

      /* update the mux */
      newsrv->mux_proto = mux_ent;
    }

    /* Allocate default tcp-check rules for proxies without
     * explicit rules.
     */
    if (curproxy->cap & PR_CAP_BE) {
      if (!(curproxy->options2 & PR_O2_CHK_ANY)) {
        struct tcpcheck_ruleset *rs = NULL;
        struct tcpcheck_rules *rules = &curproxy->tcpcheck_rules;

        curproxy->options2 |= PR_O2_TCPCHK_CHK;

        rs = find_tcpcheck_ruleset("*tcp-check");
        if (!rs) {
          rs = create_tcpcheck_ruleset("*tcp-check");
          if (rs == NULL) {
            ha_alert("config: %s '%s': out of memory.\n",
               proxy_type_str(curproxy), curproxy->id);
            cfgerr++;
          }
        }

        free_tcpcheck_vars(&rules->preset_vars);
        rules->list = &rs->rules;
        rules->flags = 0;
      }
    }
  }

  /*
   * We have just initialized the main proxies list
   * we must also configure the log-forward proxies list
   */
  if (init_proxies_list == proxies_list) {
    init_proxies_list = cfg_log_forward;
    /* check if list is not null to avoid infinite loop */
    if (init_proxies_list)
      goto init_proxies_list_stage1;
  }

  if (init_proxies_list == cfg_log_forward) {
    init_proxies_list = sink_proxies_list;
    /* check if list is not null to avoid infinite loop */
    if (init_proxies_list)
      goto init_proxies_list_stage1;
  }

  /***********************************************************/
  /* At this point, target names have already been resolved. */
  /***********************************************************/

  /* we must finish to initialize certain things on the servers */

  list_for_each_entry(newsrv, &servers_list, global_list) {
    /* initialize idle conns lists */
    if (srv_init_per_thr(newsrv) == -1) {
      ha_alert("parsing [%s:%d] : failed to allocate per-thread lists for server '%s'.\n",
               newsrv->conf.file, newsrv->conf.line, newsrv->id);
      cfgerr++;
      continue;
    }

    if (newsrv->max_idle_conns != 0) {
      newsrv->curr_idle_thr = calloc(global.nbthread, sizeof(*newsrv->curr_idle_thr));
      if (!newsrv->curr_idle_thr) {
        ha_alert("parsing [%s:%d] : failed to allocate idle connection tasks for server '%s'.\n",
                 newsrv->conf.file, newsrv->conf.line, newsrv->id);
        cfgerr++;
        continue;
      }

    }
  }

  idle_conn_task = task_new_anywhere();
  if (!idle_conn_task) {
    ha_alert("parsing : failed to allocate global idle connection task.\n");
    cfgerr++;
  }
  else {
    idle_conn_task->process = srv_cleanup_idle_conns;
    idle_conn_task->context = NULL;

    for (i = 0; i < global.nbthread; i++) {
      idle_conns[i].cleanup_task = task_new_on(i);
      if (!idle_conns[i].cleanup_task) {
        ha_alert("parsing : failed to allocate idle connection tasks for thread '%d'.\n", i);
        cfgerr++;
        break;
      }

      idle_conns[i].cleanup_task->process = srv_cleanup_toremove_conns;
      idle_conns[i].cleanup_task->context = NULL;
      HA_SPIN_INIT(&idle_conns[i].idle_conns_lock);
      MT_LIST_INIT(&idle_conns[i].toremove_conns);
    }
  }

  /* perform the final checks before creating tasks */

  /* starting to initialize the main proxies list */
  init_proxies_list = proxies_list;

init_proxies_list_stage2:
  for (curproxy = init_proxies_list; curproxy; curproxy = curproxy->next) {
    struct listener *listener;
    unsigned int next_id;

    /* Configure SSL for each bind line.
     * Note: if configuration fails at some point, the ->ctx member
     * remains NULL so that listeners can later detach.
     */
    list_for_each_entry(bind_conf, &curproxy->conf.bind, by_fe) {
      if (bind_conf->xprt->prepare_bind_conf &&
          bind_conf->xprt->prepare_bind_conf(bind_conf) < 0)
        cfgerr++;
      bind_conf->analysers |= curproxy->fe_req_ana;
      if (!bind_conf->maxaccept)
        bind_conf->maxaccept = global.tune.maxaccept ? global.tune.maxaccept : MAX_ACCEPT;
      bind_conf->accept = session_accept_fd;
      if (curproxy->options & PR_O_TCP_NOLING)
        bind_conf->options |= BC_O_NOLINGER;

      /* smart accept mode is automatic in HTTP mode */
      if ((curproxy->options2 & PR_O2_SMARTACC) ||
          ((curproxy->mode == PR_MODE_HTTP || (bind_conf->options & BC_O_USE_SSL)) &&
           !(curproxy->no_options2 & PR_O2_SMARTACC)))
        bind_conf->options |= BC_O_NOQUICKACK;
    }

    /* adjust this proxy's listeners */
    bind_conf = NULL;
    next_id = 1;
    list_for_each_entry(listener, &curproxy->conf.listeners, by_fe) {
      if (!listener->luid) {
        /* listener ID not set, use automatic numbering with first
         * spare entry starting with next_luid.
         */
        next_id = get_next_id(&curproxy->conf.used_listener_id, next_id);
        listener->conf.id.key = listener->luid = next_id;
        eb32_insert(&curproxy->conf.used_listener_id, &listener->conf.id);
      }
      next_id++;

      /* enable separate counters */
      if (curproxy->options2 & PR_O2_SOCKSTAT) {
        listener->counters = calloc(1, sizeof(*listener->counters));
        if (!listener->name)
          memprintf(&listener->name, "sock-%d", listener->luid);
      }

#ifdef USE_QUIC
      if (listener->bind_conf->xprt == xprt_get(XPRT_QUIC)) {
        /* quic_conn are counted against maxconn. */
        listener->bind_conf->options |= BC_O_XPRT_MAXCONN;
        listener->rx.quic_curr_handshake = 0;
        listener->rx.quic_curr_accept = 0;

# ifdef USE_QUIC_OPENSSL_COMPAT
        /* store the last checked bind_conf in bind_conf */
        if (!(global.tune.options & GTUNE_NO_QUIC) &&
            !(global.tune.options & GTUNE_LIMITED_QUIC) &&
            listener->bind_conf != bind_conf) {
          bind_conf = listener->bind_conf;
          ha_alert("Binding [%s:%d] for %s %s: this SSL library does not support the "
             "QUIC protocol. A limited compatibility layer may be enabled using "
             "the \"limited-quic\" global option if desired.\n",
             listener->bind_conf->file, listener->bind_conf->line,
             proxy_type_str(curproxy), curproxy->id);
          cfgerr++;
        }
# endif

        li_init_per_thr(listener);
      }
#endif
    }

    /* Release unused SSL configs */
    list_for_each_entry(bind_conf, &curproxy->conf.bind, by_fe) {
      if (!(bind_conf->options & BC_O_USE_SSL) && bind_conf->xprt->destroy_bind_conf)
        bind_conf->xprt->destroy_bind_conf(bind_conf);
    }

    /* create the task associated with the proxy */
    curproxy->task = task_new_anywhere();
    if (curproxy->task) {
      curproxy->task->context = curproxy;
      curproxy->task->process = manage_proxy;
      curproxy->flags |= PR_FL_READY;
    } else {
      ha_alert("Proxy '%s': no more memory when trying to allocate the management task\n",
         curproxy->id);
      cfgerr++;
    }
  }

  /*
   * We have just initialized the main proxies list
   * we must also configure the log-forward proxies list
   */
  if (init_proxies_list == proxies_list) {
    init_proxies_list = cfg_log_forward;
    /* check if list is not null to avoid infinite loop */
    if (init_proxies_list)
      goto init_proxies_list_stage2;
  }

  /*
   * Recount currently required checks.
   */

  for (curproxy=proxies_list; curproxy; curproxy=curproxy->next) {
    int optnum;

    for (optnum = 0; cfg_opts[optnum].name; optnum++)
      if (curproxy->options & cfg_opts[optnum].val)
        global.last_checks |= cfg_opts[optnum].checks;

    for (optnum = 0; cfg_opts2[optnum].name; optnum++)
      if (curproxy->options2 & cfg_opts2[optnum].val)
        global.last_checks |= cfg_opts2[optnum].checks;
  }

  if (cfg_peers) {
    struct peers *curpeers = cfg_peers, **last;
    struct peer *p, *pb;

    /* Remove all peers sections which don't have a valid listener,
     * which are not used by any table, or which are bound to more
     * than one process.
     */
    last = &cfg_peers;
    while (*last) {
      struct peer *peer;
      struct stktable *t;
      curpeers = *last;

      if (curpeers->disabled) {
        /* the "disabled" keyword was present */
        if (curpeers->peers_fe)
          stop_proxy(curpeers->peers_fe);
        curpeers->peers_fe = NULL;
      }
      else if (!curpeers->peers_fe || !curpeers->peers_fe->id) {
        ha_warning("Removing incomplete section 'peers %s' (no peer named '%s').\n",
             curpeers->id, localpeer);
        if (curpeers->peers_fe)
          stop_proxy(curpeers->peers_fe);
        curpeers->peers_fe = NULL;
      }
      else {
        /* Initializes the transport layer of the server part of all the peers belonging to
         * <curpeers> section if required.
         * Note that ->srv is used by the local peer of a new process to connect to the local peer
         * of an old process.
         */
        curpeers->peers_fe->flags |= PR_FL_READY;
        p = curpeers->remote;
        while (p) {
          struct peer *other_peer;

          for (other_peer = curpeers->remote; other_peer && other_peer != p; other_peer = other_peer->next) {
            if (strcmp(other_peer->id, p->id) == 0) {
              ha_alert("Peer section '%s' [%s:%d]: another peer named '%s' was already defined at line %s:%d, please use distinct names.\n",
                 curpeers->peers_fe->id,
                 p->conf.file, p->conf.line,
                 other_peer->id, other_peer->conf.file, other_peer->conf.line);
              cfgerr++;
              break;
            }
          }

          if (p->srv) {
            if (p->srv->use_ssl == 1 && xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->prepare_srv)
              cfgerr += xprt_get(XPRT_SSL)->prepare_srv(p->srv);
          }
          p = p->next;
        }
        /* Configure the SSL bindings of the local peer if required. */
        if (!LIST_ISEMPTY(&curpeers->peers_fe->conf.bind)) {
          struct list *l;
          struct bind_conf *bind_conf;
          int ret;

          l = &curpeers->peers_fe->conf.bind;
          bind_conf = LIST_ELEM(l->n, typeof(bind_conf), by_fe);

          if (curpeers->local->srv) {
            if (curpeers->local->srv->use_ssl == 1 && !(bind_conf->options & BC_O_USE_SSL)) {
              ha_warning("Peers section '%s': local peer have a non-SSL listener and a SSL server configured at line %s:%d.\n",
                   curpeers->peers_fe->id, curpeers->local->conf.file, curpeers->local->conf.line);
            }
            else if (curpeers->local->srv->use_ssl != 1 && (bind_conf->options & BC_O_USE_SSL)) {
              ha_warning("Peers section '%s': local peer have a SSL listener and a non-SSL server configured at line %s:%d.\n",
                   curpeers->peers_fe->id, curpeers->local->conf.file, curpeers->local->conf.line);
            }
          }

          /* finish the bind setup */
          ret = bind_complete_thread_setup(bind_conf, &err_code);
          if (ret != 0) {
            cfgerr += ret;
            if (err_code & ERR_FATAL)
              goto out;
          }

          if (bind_conf->xprt->prepare_bind_conf &&
            bind_conf->xprt->prepare_bind_conf(bind_conf) < 0)
            cfgerr++;
        }
        if (!peers_init_sync(curpeers) || !peers_alloc_dcache(curpeers)) {
          ha_alert("Peers section '%s': out of memory, giving up on peers.\n",
             curpeers->id);
          cfgerr++;
          break;
        }
        last = &curpeers->next;

        /* Ignore the peer shard greater than the number of peer shard for this section.
         * Also ignore the peer shard of the local peer.
         */
        for (peer = curpeers->remote; peer; peer = peer->next) {
          if (peer == curpeers->local) {
            if (peer->srv->shard) {
              ha_warning("Peers section '%s': shard ignored for '%s' local peer\n",
                     curpeers->id, peer->id);
              peer->srv->shard = 0;
            }
          }
          else if (peer->srv->shard > curpeers->nb_shards) {
            ha_warning("Peers section '%s': shard ignored for '%s' local peer because "
                   "%d shard value is greater than the section number of shards (%d)\n",
                   curpeers->id, peer->id, peer->srv->shard, curpeers->nb_shards);
            peer->srv->shard = 0;
          }
        }

        continue;
      }

      /* clean what has been detected above */
      p = curpeers->remote;
      while (p) {
        pb = p->next;
        free(p->id);
        free(p);
        p = pb;
      }

      /* Destroy and unlink this curpeers section.
       * Note: curpeers is backed up into *last.
       */
      free(curpeers->id);
      curpeers = curpeers->next;
      /* Reset any refereance to this peers section in the list of stick-tables */
      for (t = stktables_list; t; t = t->next) {
        if (t->peers.p && t->peers.p == *last)
          t->peers.p = NULL;
      }
      free(*last);
      *last = curpeers;
    }
  }

  for (t = stktables_list; t; t = t->next) {
    if (t->proxy)
      continue;
    err = NULL;
    if (!stktable_init(t, &err)) {
      ha_alert("Parsing [%s:%d]: failed to initialize '%s' stick-table: %s.\n", t->conf.file, t->conf.line, t->id, err);
      ha_free(&err);
      cfgerr++;
    }
  }

  /* initialize stick-tables on backend capable proxies. This must not
   * be done earlier because the data size may be discovered while parsing
   * other proxies.
   */
  for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
    if ((curproxy->flags & PR_FL_DISABLED) || !curproxy->table)
      continue;

    err = NULL;
    if (!stktable_init(curproxy->table, &err)) {
      ha_alert("Proxy '%s': failed to initialize stick-table: %s.\n", curproxy->id, err);
      ha_free(&err);
      cfgerr++;
    }
  }

  if (mailers) {
    struct mailers *curmailers = mailers, **last;
    struct mailer *m, *mb;

    /* Remove all mailers sections which don't have a valid listener.
     * This can happen when a mailers section is never referenced.
     */
    last = &mailers;
    while (*last) {
      curmailers = *last;
      if (curmailers->users) {
        last = &curmailers->next;
        continue;
      }

      ha_warning("Removing incomplete section 'mailers %s'.\n",
           curmailers->id);

      m = curmailers->mailer_list;
      while (m) {
        mb = m->next;
        free(m->id);
        free(m);
        m = mb;
      }

      /* Destroy and unlink this curmailers section.
       * Note: curmailers is backed up into *last.
       */
      free(curmailers->id);
      curmailers = curmailers->next;
      free(*last);
      *last = curmailers;
    }
  }

  /* Update server_state_file_name to backend name if backend is supposed to use
   * a server-state file locally defined and none has been provided */
  for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
    if (curproxy->load_server_state_from_file == PR_SRV_STATE_FILE_LOCAL &&
        curproxy->server_state_file_name == NULL)
      curproxy->server_state_file_name = strdup(curproxy->id);
  }

  list_for_each_entry(curr_resolvers, &sec_resolvers, list) {
    if (LIST_ISEMPTY(&curr_resolvers->nameservers)) {
      ha_warning("resolvers '%s' [%s:%d] has no nameservers configured!\n",
           curr_resolvers->id, curr_resolvers->conf.file,
           curr_resolvers->conf.line);
      err_code |= ERR_WARN;
    }
  }

  list_for_each_entry(postparser, &postparsers, list) {
    if (postparser->func)
      cfgerr += postparser->func();
  }

  if (cfgerr > 0)
    err_code |= ERR_ALERT | ERR_FATAL;
 out:
  return err_code;
}

/*
 * Registers the CFG keyword list <kwl> as a list of valid keywords for next
 * parsing sessions.
 */
void cfg_register_keywords(struct cfg_kw_list *kwl)
{
  LIST_APPEND(&cfg_keywords.list, &kwl->list);
}

/*
 * Unregisters the CFG keyword list <kwl> from the list of valid keywords.
 */
void cfg_unregister_keywords(struct cfg_kw_list *kwl)
{
  LIST_DELETE(&kwl->list);
  LIST_INIT(&kwl->list);
}

/* this function register new section in the haproxy configuration file.
 * <section_name> is the name of this new section and <section_parser>
 * is the called parser. If two section declaration have the same name,
 * only the first declared is used.
 */
int cfg_register_section(char *section_name,
                         int (*section_parser)(const char *, int, char **, int),
                         int (*post_section_parser)())
{
  struct cfg_section *cs;

  list_for_each_entry(cs, &sections, list) {
    if (strcmp(cs->section_name, section_name) == 0) {
      ha_alert("register section '%s': already registered.\n", section_name);
      return 0;
    }
  }

  cs = calloc(1, sizeof(*cs));
  if (!cs) {
    ha_alert("register section '%s': out of memory.\n", section_name);
    return 0;
  }

  cs->section_name = section_name;
  cs->section_parser = section_parser;
  cs->post_section_parser = post_section_parser;

  LIST_APPEND(&sections, &cs->list);

  return 1;
}

/* this function register a new function which will be called once the haproxy
 * configuration file has been parsed. It's useful to check dependencies
 * between sections or to resolve items once everything is parsed.
 */
int cfg_register_postparser(char *name, int (*func)())
{
  struct cfg_postparser *cp;

  cp = calloc(1, sizeof(*cp));
  if (!cp) {
4555

Coverage Report

Created: 2023-11-19 07:16