/src/CMake/Utilities/cmcurl/lib/curl_trc.c

Source
/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution. The terms
 * are also available at https://curl.se/docs/copyright.html.
 *
 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 * copies of the Software, and permit persons to whom the Software is
 * furnished to do so, under the terms of the COPYING file.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 * SPDX-License-Identifier: curl
 *
 ***************************************************************************/
#include "curl_setup.h"

#include "curl_trc.h"
#include "urldata.h"
#include "cfilters.h"
#include "multiif.h"

#include "cf-dns.h"
#include "cf-socket.h"
#include "connect.h"
#include "http2.h"
#include "http_proxy.h"
#include "cf-h1-proxy.h"
#include "cf-h2-proxy.h"
#include "cf-haproxy.h"
#include "cf-https-connect.h"
#include "cf-ip-happy.h"
#include "progress.h"
#include "socks.h"
#include "curlx/strparse.h"
#include "vtls/vtls.h"
#include "vquic/vquic.h"
#include "curlx/strcopy.h"

static void trc_write(struct Curl_easy *data, curl_infotype type,
                      const char *ptr, size_t size)
{
  if(data->set.verbose) {
    if(data->set.fdebug) {
      bool inCallback = Curl_is_in_callback(data);
      Curl_set_in_callback(data, TRUE);
      (void)(*data->set.fdebug)(data, type, CURL_UNCONST(ptr), size,
                                data->set.debugdata);
      Curl_set_in_callback(data, inCallback);
    }
    else {
      static const char s_infotype[CURLINFO_END][3] = {
        "* ", "< ", "> ", "{ ", "} ", "{ ", "} " };
      switch(type) {
      case CURLINFO_TEXT:
      case CURLINFO_HEADER_OUT:
      case CURLINFO_HEADER_IN:
        fwrite(s_infotype[type], 2, 1, data->set.err);
        fwrite(ptr, size, 1, data->set.err);
        break;
      default: /* nada */
        break;
      }
    }
  }
}

/* max length we trace before ending in '...' */
#define TRC_LINE_MAX 2048

#define CURL_TRC_FMT_IDSC   "[x-%" CURL_FORMAT_CURL_OFF_T "] "
#define CURL_TRC_FMT_IDSD   "[%" CURL_FORMAT_CURL_OFF_T "-x] "
#define CURL_TRC_FMT_IDSDC  "[%" CURL_FORMAT_CURL_OFF_T "-%" \
                            CURL_FORMAT_CURL_OFF_T "] "

static struct curl_trc_feat Curl_trc_feat_ids = {
  "LIB-IDS",
  CURL_LOG_LVL_NONE,
};
#define CURL_TRC_IDS(data) \
  (Curl_trc_is_verbose(data) && \
  Curl_trc_feat_ids.log_level >= CURL_LOG_LVL_INFO)

static size_t trc_print_ids(struct Curl_easy *data, char *buf, size_t maxlen)
{
  curl_off_t cid = data->conn ?
                   data->conn->connection_id : data->state.recent_conn_id;
  if(data->id >= 0) {
    if(cid >= 0)
      return curl_msnprintf(buf, maxlen, CURL_TRC_FMT_IDSDC, data->id, cid);
    else
      return curl_msnprintf(buf, maxlen, CURL_TRC_FMT_IDSD, data->id);
  }
  else if(cid >= 0)
    return curl_msnprintf(buf, maxlen, CURL_TRC_FMT_IDSC, cid);
  else {
    return curl_msnprintf(buf, maxlen, "[x-x] ");
  }
}

static size_t trc_end_buf(char *buf, size_t len, size_t maxlen, bool addnl)
{
  /* make sure we end the trace line in `buf` properly. It needs
   * to end with a terminating '\0' or '\n\0' */
  if(len >= (maxlen - (addnl ? 2 : 1))) {
    len = maxlen - 5;
    buf[len++] = '.';
    buf[len++] = '.';
    buf[len++] = '.';
    buf[len++] = '\n';
  }
  else if(addnl)
    buf[len++] = '\n';
  buf[len] = '\0';
  return len;
}

void Curl_debug(struct Curl_easy *data, curl_infotype type,
                const char *ptr, size_t size)
{
  if(data->set.verbose) {
    static const char s_infotype[CURLINFO_END][3] = {
      "* ", "< ", "> ", "{ ", "} ", "{ ", "} " };
    char buf[TRC_LINE_MAX];
    size_t len;
    if(data->set.fdebug) {
      bool inCallback = Curl_is_in_callback(data);

      if(CURL_TRC_IDS(data) && (size < TRC_LINE_MAX)) {
        len = trc_print_ids(data, buf, TRC_LINE_MAX);
        len += curl_msnprintf(buf + len, TRC_LINE_MAX - len, "%.*s",
                              (int)size, ptr);
        len = trc_end_buf(buf, len, TRC_LINE_MAX, FALSE);
        Curl_set_in_callback(data, TRUE);
        (void)(*data->set.fdebug)(data, type, buf, len, data->set.debugdata);
        Curl_set_in_callback(data, inCallback);
      }
      else {
        Curl_set_in_callback(data, TRUE);
        (void)(*data->set.fdebug)(data, type, CURL_UNCONST(ptr),
                                  size, data->set.debugdata);
        Curl_set_in_callback(data, inCallback);
      }
    }
    else {
      switch(type) {
      case CURLINFO_TEXT:
      case CURLINFO_HEADER_OUT:
      case CURLINFO_HEADER_IN:
#ifndef CURL_DISABLE_VERBOSE_STRINGS
        if(CURL_TRC_IDS(data)) {
          len = trc_print_ids(data, buf, TRC_LINE_MAX);
          fwrite(buf, len, 1, data->set.err);
        }
#endif
        fwrite(s_infotype[type], 2, 1, data->set.err);
        fwrite(ptr, size, 1, data->set.err);
        break;
      default: /* nada */
        break;
      }
    }
  }
}

/* Curl_failf() is for messages stating why we failed.
 * The message SHALL NOT include any LF or CR.
 */
void Curl_failf(struct Curl_easy *data, const char *fmt, ...)
{
  DEBUGASSERT(!strchr(fmt, '\n'));
  if(data->set.verbose || data->set.errorbuffer) {
    va_list ap;
    size_t len;
    char error[CURL_ERROR_SIZE + 2];
    va_start(ap, fmt);
    len = curl_mvsnprintf(error, CURL_ERROR_SIZE, fmt, ap);

    if(data->set.errorbuffer && !data->state.errorbuf) {
      curlx_strcopy(data->set.errorbuffer, CURL_ERROR_SIZE, error, len);
      data->state.errorbuf = TRUE; /* wrote error string */
    }
    error[len++] = '\n';
    error[len] = '\0';
    trc_write(data, CURLINFO_TEXT, error, len);
    va_end(ap);
  }
}

void Curl_reset_fail(struct Curl_easy *data)
{
  if(data->set.errorbuffer)
    data->set.errorbuffer[0] = 0;
  data->state.errorbuf = FALSE;
}

#ifdef CURLVERBOSE
struct curl_trc_feat Curl_trc_feat_multi = {
  "MULTI",
  CURL_LOG_LVL_NONE,
};
struct curl_trc_feat Curl_trc_feat_read = {
  "READ",
  CURL_LOG_LVL_NONE,
};
struct curl_trc_feat Curl_trc_feat_write = {
  "WRITE",
  CURL_LOG_LVL_NONE,
};
struct curl_trc_feat Curl_trc_feat_dns = {
  "DNS",
  CURL_LOG_LVL_NONE,
};
struct curl_trc_feat Curl_trc_feat_timer = {
  "TIMER",
  CURL_LOG_LVL_NONE,
};
#ifdef USE_THREADS
struct curl_trc_feat Curl_trc_feat_threads = {
  "THREADS",
  CURL_LOG_LVL_NONE,
};
#endif
#endif

#ifndef CURL_DISABLE_VERBOSE_STRINGS

static void trc_infof(struct Curl_easy *data,
                      struct curl_trc_feat *feat,
                      const char *opt_id, int opt_id_idx,
                      const char * const fmt, va_list ap) CURL_PRINTF(5, 0);

static void trc_infof(struct Curl_easy *data,
                      struct curl_trc_feat *feat,
                      const char *opt_id, int opt_id_idx,
                      const char * const fmt, va_list ap)
{
  size_t len = 0;
  char buf[TRC_LINE_MAX];

  if(CURL_TRC_IDS(data))
    len += trc_print_ids(data, buf + len, TRC_LINE_MAX - len);
  if(feat)
    len += curl_msnprintf(buf + len, TRC_LINE_MAX - len, "[%s] ", feat->name);
  if(opt_id) {
    if(opt_id_idx > 0)
      len += curl_msnprintf(buf + len, TRC_LINE_MAX - len, "[%s-%d] ",
                            opt_id, opt_id_idx);
    else
      len += curl_msnprintf(buf + len, TRC_LINE_MAX - len, "[%s] ", opt_id);
  }
  len += curl_mvsnprintf(buf + len, TRC_LINE_MAX - len, fmt, ap);
  len = trc_end_buf(buf, len, TRC_LINE_MAX, TRUE);
  trc_write(data, CURLINFO_TEXT, buf, len);
}

void Curl_infof(struct Curl_easy *data, const char *fmt, ...)
{
  DEBUGASSERT(!strchr(fmt, '\n'));
  if(Curl_trc_is_verbose(data)) {
    va_list ap;
    va_start(ap, fmt);
    trc_infof(data, data->state.feat, NULL, 0, fmt, ap);
    va_end(ap);
  }
}

void Curl_trc_cf_infof(struct Curl_easy *data, const struct Curl_cfilter *cf,
                       const char *fmt, ...)
{
  DEBUGASSERT(cf);
  if(Curl_trc_cf_is_verbose(cf, data)) {
    va_list ap;
    va_start(ap, fmt);
    trc_infof(data, data->state.feat, cf->cft->name, cf->sockindex, fmt, ap);
    va_end(ap);
  }
}

void Curl_trc_feat_infof(struct Curl_easy *data,
                         struct curl_trc_feat *feat,
                         const char *fmt, ...)
{
  DEBUGASSERT(feat);
  if(Curl_trc_ft_is_verbose(data, feat)) {
    va_list ap;
    va_start(ap, fmt);
    trc_infof(data, feat, NULL, 0, fmt, ap);
    va_end(ap);
  }
}

static const char * const Curl_trc_timer_names[] = {
  "100_TIMEOUT",
  "ASYNC_NAME",
  "CONNECTTIMEOUT",
  "DNS_PER_NAME",
  "DNS_PER_NAME2",
  "HAPPY_EYEBALLS_DNS",
  "HAPPY_EYEBALLS",
  "MULTI_PENDING",
  "SPEEDCHECK",
  "TIMEOUT",
  "TOOFAST",
  "QUIC",
  "FTP_ACCEPT",
  "ALPN_EYEBALLS",
  "SHUTDOWN",
};

static const char *trc_timer_name(int tid)
{
  if((tid >= 0) && ((size_t)tid < CURL_ARRAYSIZE(Curl_trc_timer_names)))
    return Curl_trc_timer_names[(size_t)tid];
  return "UNKNOWN?";
}

void Curl_trc_timer(struct Curl_easy *data, int tid, const char *fmt, ...)
{
  DEBUGASSERT(!strchr(fmt, '\n'));
  if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_timer)) {
    const char *tname = trc_timer_name(tid);
    va_list ap;
    va_start(ap, fmt);
    trc_infof(data, &Curl_trc_feat_timer, tname, 0, fmt, ap);
    va_end(ap);
  }
}

void Curl_trc_easy_timers(struct Curl_easy *data)
{
  if(CURL_TRC_TIMER_is_verbose(data)) {
    struct Curl_llist_node *e = Curl_llist_head(&data->state.timeoutlist);
    if(e) {
      const struct curltime *pnow = Curl_pgrs_now(data);
      while(e) {
        struct time_node *n = Curl_node_elem(e);
        e = Curl_node_next(e);
        CURL_TRC_TIMER(data, n->eid, "expires in %" FMT_TIMEDIFF_T "ns",
                       curlx_ptimediff_us(&n->time, pnow));
      }
    }
  }
}

static const char * const Curl_trc_mstate_names[] = {
  "INIT",
  "PENDING",
  "SETUP",
  "CONNECT",
  "CONNECTING",
  "PROTOCONNECT",
  "PROTOCONNECTING",
  "DO",
  "DOING",
  "DOING_MORE",
  "DID",
  "PERFORMING",
  "RATELIMITING",
  "DONE",
  "COMPLETED",
  "MSGSENT",
};

const char *Curl_trc_mstate_name(int state)
{
  if((state >= 0) && ((size_t)state < CURL_ARRAYSIZE(Curl_trc_mstate_names)))
    return Curl_trc_mstate_names[(size_t)state];
  return "?";
}

void Curl_trc_multi(struct Curl_easy *data, const char *fmt, ...)
{
  DEBUGASSERT(!strchr(fmt, '\n'));
  if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_multi)) {
    const char *sname = (data->id >= 0) ?
                        Curl_trc_mstate_name(data->mstate) : NULL;
    va_list ap;
    va_start(ap, fmt);
    trc_infof(data, &Curl_trc_feat_multi, sname, 0, fmt, ap);
    va_end(ap);
  }
}

void Curl_trc_read(struct Curl_easy *data, const char *fmt, ...)
{
  DEBUGASSERT(!strchr(fmt, '\n'));
  if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_read)) {
    va_list ap;
    va_start(ap, fmt);
    trc_infof(data, &Curl_trc_feat_read, NULL, 0, fmt, ap);
    va_end(ap);
  }
}

void Curl_trc_write(struct Curl_easy *data, const char *fmt, ...)
{
  DEBUGASSERT(!strchr(fmt, '\n'));
  if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_write)) {
    va_list ap;
    va_start(ap, fmt);
    trc_infof(data, &Curl_trc_feat_write, NULL, 0, fmt, ap);
    va_end(ap);
  }
}

void Curl_trc_dns(struct Curl_easy *data, const char *fmt, ...)
{
  DEBUGASSERT(!strchr(fmt, '\n'));
  if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_dns)) {
    va_list ap;
    va_start(ap, fmt);
    trc_infof(data, &Curl_trc_feat_dns, NULL, 0, fmt, ap);
    va_end(ap);
  }
}

#ifndef CURL_DISABLE_FTP
struct curl_trc_feat Curl_trc_feat_ftp = {
  "FTP",
  CURL_LOG_LVL_NONE,
};

void Curl_trc_ftp(struct Curl_easy *data, const char *fmt, ...)
{
  DEBUGASSERT(!strchr(fmt, '\n'));
  if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_ftp)) {
    va_list ap;
    va_start(ap, fmt);
    trc_infof(data, &Curl_trc_feat_ftp, NULL, 0, fmt, ap);
    va_end(ap);
  }
}
#endif /* !CURL_DISABLE_FTP */

#ifndef CURL_DISABLE_SMTP
struct curl_trc_feat Curl_trc_feat_smtp = {
  "SMTP",
  CURL_LOG_LVL_NONE,
};

void Curl_trc_smtp(struct Curl_easy *data, const char *fmt, ...)
{
  DEBUGASSERT(!strchr(fmt, '\n'));
  if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_smtp)) {
    va_list ap;
    va_start(ap, fmt);
    trc_infof(data, &Curl_trc_feat_smtp, NULL, 0, fmt, ap);
    va_end(ap);
  }
}
#endif /* !CURL_DISABLE_SMTP */

#ifdef USE_SSL
struct curl_trc_feat Curl_trc_feat_ssls = {
  "SSLS",
  CURL_LOG_LVL_NONE,
};

void Curl_trc_ssls(struct Curl_easy *data, const char *fmt, ...)
{
  DEBUGASSERT(!strchr(fmt, '\n'));
  if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_ssls)) {
    va_list ap;
    va_start(ap, fmt);
    trc_infof(data, &Curl_trc_feat_ssls, NULL, 0, fmt, ap);
    va_end(ap);
  }
}
#endif /* USE_SSL */

#ifdef USE_SSH
struct curl_trc_feat Curl_trc_feat_ssh = {
  "SSH",
  CURL_LOG_LVL_NONE,
};

void Curl_trc_ssh(struct Curl_easy *data, const char *fmt, ...)
{
  DEBUGASSERT(!strchr(fmt, '\n'));
  if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_ssh)) {
    va_list ap;
    va_start(ap, fmt);
    trc_infof(data, &Curl_trc_feat_ssh, NULL, 0, fmt, ap);
    va_end(ap);
  }
}
#endif /* USE_SSH */

#if !defined(CURL_DISABLE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP)
struct curl_trc_feat Curl_trc_feat_ws = {
  "WS",
  CURL_LOG_LVL_NONE,
};

void Curl_trc_ws(struct Curl_easy *data, const char *fmt, ...)
{
  DEBUGASSERT(!strchr(fmt, '\n'));
  if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_ws)) {
    va_list ap;
    va_start(ap, fmt);
    trc_infof(data, &Curl_trc_feat_ws, NULL, 0, fmt, ap);
    va_end(ap);
  }
}
#endif /* !CURL_DISABLE_WEBSOCKETS && !CURL_DISABLE_HTTP */

#define TRC_CT_NONE        0
#define TRC_CT_PROTOCOL    (1 << 0)
#define TRC_CT_NETWORK     (1 << 1)
#define TRC_CT_PROXY       (1 << 2)
#define TRC_CT_INTERNALS   (1 << 3)

struct trc_feat_def {
  struct curl_trc_feat *feat;
  unsigned int category;
};

static struct trc_feat_def trc_feats[] = {
  { &Curl_trc_feat_ids,       TRC_CT_INTERNALS },
  { &Curl_trc_feat_multi,     TRC_CT_NETWORK },
  { &Curl_trc_feat_read,      TRC_CT_NONE },
  { &Curl_trc_feat_write,     TRC_CT_NONE },
  { &Curl_trc_feat_dns,       TRC_CT_NETWORK },
  { &Curl_trc_feat_timer,     TRC_CT_NETWORK },
#ifdef USE_THREADS
  { &Curl_trc_feat_threads,   TRC_CT_NONE },
#endif
#ifndef CURL_DISABLE_FTP
  { &Curl_trc_feat_ftp,       TRC_CT_PROTOCOL },
#endif
#ifndef CURL_DISABLE_SMTP
  { &Curl_trc_feat_smtp,      TRC_CT_PROTOCOL },
#endif
#ifdef USE_SSL
  { &Curl_trc_feat_ssls,      TRC_CT_NETWORK },
#endif
#ifdef USE_SSH
  { &Curl_trc_feat_ssh,      TRC_CT_PROTOCOL },
#endif
#if !defined(CURL_DISABLE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP)
  { &Curl_trc_feat_ws,        TRC_CT_PROTOCOL },
#endif
};

struct trc_cft_def {
  struct Curl_cftype *cft;
  unsigned int category;
};

static struct trc_cft_def trc_cfts[] = {
  { &Curl_cft_dns,            TRC_CT_NETWORK },
  { &Curl_cft_tcp,            TRC_CT_NETWORK },
  { &Curl_cft_udp,            TRC_CT_NETWORK },
  { &Curl_cft_unix,           TRC_CT_NETWORK },
  { &Curl_cft_tcp_accept,     TRC_CT_NETWORK },
  { &Curl_cft_ip_happy,       TRC_CT_NETWORK },
  { &Curl_cft_setup,          TRC_CT_PROTOCOL },
#if !defined(CURL_DISABLE_HTTP) && defined(USE_NGHTTP2)
  { &Curl_cft_nghttp2,        TRC_CT_PROTOCOL },
#endif
#ifdef USE_SSL
  { &Curl_cft_ssl,            TRC_CT_NETWORK },
#ifndef CURL_DISABLE_PROXY
  { &Curl_cft_ssl_proxy,      TRC_CT_PROXY },
#endif
#endif
#ifndef CURL_DISABLE_PROXY
#ifndef CURL_DISABLE_HTTP
  { &Curl_cft_h1_proxy,       TRC_CT_PROXY },
#ifdef USE_NGHTTP2
  { &Curl_cft_h2_proxy,       TRC_CT_PROXY },
#endif
  { &Curl_cft_http_proxy,     TRC_CT_PROXY },
#endif /* !CURL_DISABLE_HTTP */
  { &Curl_cft_haproxy,        TRC_CT_PROXY },
  { &Curl_cft_socks_proxy,    TRC_CT_PROXY },
#endif /* !CURL_DISABLE_PROXY */
#if !defined(CURL_DISABLE_HTTP) && defined(USE_HTTP3)
  { &Curl_cft_http3,          TRC_CT_PROTOCOL },
#endif
#ifndef CURL_DISABLE_HTTP
  { &Curl_cft_http_connect,   TRC_CT_PROTOCOL },
#endif
};

static void trc_apply_level_by_name(struct Curl_str *token, int lvl)
{
  size_t i;

  for(i = 0; i < CURL_ARRAYSIZE(trc_cfts); ++i) {
    if(curlx_str_casecompare(token, trc_cfts[i].cft->name)) {
      trc_cfts[i].cft->log_level = lvl;
      break;
    }
  }
  for(i = 0; i < CURL_ARRAYSIZE(trc_feats); ++i) {
    if(curlx_str_casecompare(token, trc_feats[i].feat->name)) {
      trc_feats[i].feat->log_level = lvl;
      break;
    }
  }
}

static void trc_apply_level_by_category(unsigned int category, int lvl)
{
  size_t i;

  for(i = 0; i < CURL_ARRAYSIZE(trc_cfts); ++i) {
    if(!category || (trc_cfts[i].category & category))
      trc_cfts[i].cft->log_level = lvl;
  }
  for(i = 0; i < CURL_ARRAYSIZE(trc_feats); ++i) {
    if(!category || (trc_feats[i].category & category))
      trc_feats[i].feat->log_level = lvl;
  }
}

static CURLcode trc_opt(const char *config)
{
  struct Curl_str out;
  while(!curlx_str_until(&config, &out, 32, ',')) {
    int lvl = CURL_LOG_LVL_INFO;
    const char *token = curlx_str(&out);

    if(*token == '-') {
      lvl = CURL_LOG_LVL_NONE;
      curlx_str_nudge(&out, 1);
    }
    else if(*token == '+')
      curlx_str_nudge(&out, 1);

    if(curlx_str_casecompare(&out, "all"))
      trc_apply_level_by_category(TRC_CT_NONE, lvl);
    else if(curlx_str_casecompare(&out, "protocol"))
      trc_apply_level_by_category(TRC_CT_PROTOCOL, lvl);
    else if(curlx_str_casecompare(&out, "network"))
      trc_apply_level_by_category(TRC_CT_NETWORK, lvl);
    else if(curlx_str_casecompare(&out, "proxy"))
      trc_apply_level_by_category(TRC_CT_PROXY, lvl);
    else if(curlx_str_casecompare(&out, "doh")) {
      struct Curl_str dns = { "dns", 3 };
      trc_apply_level_by_name(&dns, lvl);
    }
    else
      trc_apply_level_by_name(&out, lvl);

    if(curlx_str_single(&config, ','))
      break;
  }
  return CURLE_OK;
}

CURLcode Curl_trc_opt(const char *config)
{
  CURLcode result = config ? trc_opt(config) : CURLE_OK;
#ifdef DEBUGBUILD
  /* CURL_DEBUG can override anything */
  if(!result) {
    const char *dbg_config = getenv("CURL_DEBUG");
    if(dbg_config)
      result = trc_opt(dbg_config);
  }
#endif /* DEBUGBUILD */
  return result;
}

CURLcode Curl_trc_init(void)
{
#ifdef DEBUGBUILD
  return Curl_trc_opt(NULL);
#else
  return CURLE_OK;
#endif
}

#else /* CURL_DISABLE_VERBOSE_STRINGS */

CURLcode Curl_trc_init(void)
{
  return CURLE_OK;
}

void Curl_infof(struct Curl_easy *data, const char *fmt, ...)
{
  (void)data;
  (void)fmt;
}

void Curl_trc_cf_infof(struct Curl_easy *data, const struct Curl_cfilter *cf,
                       const char *fmt, ...)
{
  (void)data;
  (void)cf;
  (void)fmt;
}

void Curl_trc_multi(struct Curl_easy *data, const char *fmt, ...)
{
  (void)data;
  (void)fmt;
}

void Curl_trc_write(struct Curl_easy *data, const char *fmt, ...)
{
  (void)data;
  (void)fmt;
}

void Curl_trc_dns(struct Curl_easy *data, const char *fmt, ...)
{
  (void)data;
  (void)fmt;
}

void Curl_trc_timer(struct Curl_easy *data, int tid, const char *fmt, ...)
{
  (void)data;
  (void)tid;
  (void)fmt;
}

void Curl_trc_read(struct Curl_easy *data, const char *fmt, ...)
{
  (void)data;
  (void)fmt;
}

#ifndef CURL_DISABLE_FTP
void Curl_trc_ftp(struct Curl_easy *data, const char *fmt, ...)
{
  (void)data;
  (void)fmt;
}
#endif
#ifndef CURL_DISABLE_SMTP
void Curl_trc_smtp(struct Curl_easy *data, const char *fmt, ...)
{
  (void)data;
  (void)fmt;
}
#endif
#if !defined(CURL_DISABLE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP)
void Curl_trc_ws(struct Curl_easy *data, const char *fmt, ...)
{
  (void)data;
  (void)fmt;
}
#endif
#ifdef USE_SSH
void Curl_trc_ssh(struct Curl_easy *data, const char *fmt, ...)
{
  (void)data;
  (void)fmt;
}
#endif
#ifdef USE_SSL
void Curl_trc_ssls(struct Curl_easy *data, const char *fmt, ...)
{
  (void)data;
  (void)fmt;
}
#endif

#endif /* !CURL_DISABLE_VERBOSE_STRINGS */

Coverage Report

Created: 2026-06-15 07:03

Line	Count	Source
1		/***************************************************************************
2		* _ _ ____ _
3		* Project ___\| \| \| \| _ \\| \|
4		* / __\| \| \| \| \|_) \| \|
5		* \| (__\| \|_\| \| _ <\| \|___
6		* \___\|\___/\|_\| \_\_____\|
7		*
8		* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
9		*
10		* This software is licensed as described in the file COPYING, which
11		* you should have received as part of this distribution. The terms
12		* are also available at https://curl.se/docs/copyright.html.
13		*
14		* You may opt to use, copy, modify, merge, publish, distribute and/or sell
15		* copies of the Software, and permit persons to whom the Software is
16		* furnished to do so, under the terms of the COPYING file.
17		*
18		* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19		* KIND, either express or implied.
20		*
21		* SPDX-License-Identifier: curl
22		*
23		***************************************************************************/
24		#include "curl_setup.h"
25
26		#include "curl_trc.h"
27		#include "urldata.h"
28		#include "cfilters.h"
29		#include "multiif.h"
30
31		#include "cf-dns.h"
32		#include "cf-socket.h"
33		#include "connect.h"
34		#include "http2.h"
35		#include "http_proxy.h"
36		#include "cf-h1-proxy.h"
37		#include "cf-h2-proxy.h"
38		#include "cf-haproxy.h"
39		#include "cf-https-connect.h"
40		#include "cf-ip-happy.h"
41		#include "progress.h"
42		#include "socks.h"
43		#include "curlx/strparse.h"
44		#include "vtls/vtls.h"
45		#include "vquic/vquic.h"
46		#include "curlx/strcopy.h"
47
48		static void trc_write(struct Curl_easy *data, curl_infotype type,
49		const char *ptr, size_t size)
50	0	{
51	0	if(data->set.verbose) {
52	0	if(data->set.fdebug) {
53	0	bool inCallback = Curl_is_in_callback(data);
54	0	Curl_set_in_callback(data, TRUE);
55	0	(void)(*data->set.fdebug)(data, type, CURL_UNCONST(ptr), size,
56	0	data->set.debugdata);
57	0	Curl_set_in_callback(data, inCallback);
58	0	}
59	0	else {
60	0	static const char s_infotype[CURLINFO_END][3] = {
61	0	"* ", "< ", "> ", "{ ", "} ", "{ ", "} " };
62	0	switch(type) {
63	0	case CURLINFO_TEXT:
64	0	case CURLINFO_HEADER_OUT:
65	0	case CURLINFO_HEADER_IN:
66	0	fwrite(s_infotype[type], 2, 1, data->set.err);
67	0	fwrite(ptr, size, 1, data->set.err);
68	0	break;
69	0	default: /* nada */
70	0	break;
71	0	}
72	0	}
73	0	}
74	0	}
75
76		/* max length we trace before ending in '...' */
77	0	#define TRC_LINE_MAX 2048
78
79	0	#define CURL_TRC_FMT_IDSC "[x-%" CURL_FORMAT_CURL_OFF_T "] "
80	0	#define CURL_TRC_FMT_IDSD "[%" CURL_FORMAT_CURL_OFF_T "-x] "
81	0	#define CURL_TRC_FMT_IDSDC "[%" CURL_FORMAT_CURL_OFF_T "-%" \
82	0	CURL_FORMAT_CURL_OFF_T "] "
83
84		static struct curl_trc_feat Curl_trc_feat_ids = {
85		"LIB-IDS",
86		CURL_LOG_LVL_NONE,
87		};
88		#define CURL_TRC_IDS(data) \
89	0	(Curl_trc_is_verbose(data) && \
90	0	Curl_trc_feat_ids.log_level >= CURL_LOG_LVL_INFO)
91
92		static size_t trc_print_ids(struct Curl_easy data, char buf, size_t maxlen)
93	0	{
94	0	curl_off_t cid = data->conn ?
95	0	data->conn->connection_id : data->state.recent_conn_id;
96	0	if(data->id >= 0) {
97	0	if(cid >= 0)
98	0	return curl_msnprintf(buf, maxlen, CURL_TRC_FMT_IDSDC, data->id, cid);
99	0	else
100	0	return curl_msnprintf(buf, maxlen, CURL_TRC_FMT_IDSD, data->id);
101	0	}
102	0	else if(cid >= 0)
103	0	return curl_msnprintf(buf, maxlen, CURL_TRC_FMT_IDSC, cid);
104	0	else {
105	0	return curl_msnprintf(buf, maxlen, "[x-x] ");
106	0	}
107	0	}
108
109		static size_t trc_end_buf(char *buf, size_t len, size_t maxlen, bool addnl)
110	0	{
111		/* make sure we end the trace line in `buf` properly. It needs
112		* to end with a terminating '\0' or '\n\0' */
113	0	if(len >= (maxlen - (addnl ? 2 : 1))) {
114	0	len = maxlen - 5;
115	0	buf[len++] = '.';
116	0	buf[len++] = '.';
117	0	buf[len++] = '.';
118	0	buf[len++] = '\n';
119	0	}
120	0	else if(addnl)
121	0	buf[len++] = '\n';
122	0	buf[len] = '\0';
123	0	return len;
124	0	}
125
126		void Curl_debug(struct Curl_easy *data, curl_infotype type,
127		const char *ptr, size_t size)
128	0	{
129	0	if(data->set.verbose) {
130	0	static const char s_infotype[CURLINFO_END][3] = {
131	0	"* ", "< ", "> ", "{ ", "} ", "{ ", "} " };
132	0	char buf[TRC_LINE_MAX];
133	0	size_t len;
134	0	if(data->set.fdebug) {
135	0	bool inCallback = Curl_is_in_callback(data);
136
137	0	if(CURL_TRC_IDS(data) && (size < TRC_LINE_MAX)) {
138	0	len = trc_print_ids(data, buf, TRC_LINE_MAX);
139	0	len += curl_msnprintf(buf + len, TRC_LINE_MAX - len, "%.*s",
140	0	(int)size, ptr);
141	0	len = trc_end_buf(buf, len, TRC_LINE_MAX, FALSE);
142	0	Curl_set_in_callback(data, TRUE);
143	0	(void)(*data->set.fdebug)(data, type, buf, len, data->set.debugdata);
144	0	Curl_set_in_callback(data, inCallback);
145	0	}
146	0	else {
147	0	Curl_set_in_callback(data, TRUE);
148	0	(void)(*data->set.fdebug)(data, type, CURL_UNCONST(ptr),
149	0	size, data->set.debugdata);
150	0	Curl_set_in_callback(data, inCallback);
151	0	}
152	0	}
153	0	else {
154	0	switch(type) {
155	0	case CURLINFO_TEXT:
156	0	case CURLINFO_HEADER_OUT:
157	0	case CURLINFO_HEADER_IN:
158	0	#ifndef CURL_DISABLE_VERBOSE_STRINGS
159	0	if(CURL_TRC_IDS(data)) {
160	0	len = trc_print_ids(data, buf, TRC_LINE_MAX);
161	0	fwrite(buf, len, 1, data->set.err);
162	0	}
163	0	#endif
164	0	fwrite(s_infotype[type], 2, 1, data->set.err);
165	0	fwrite(ptr, size, 1, data->set.err);
166	0	break;
167	0	default: /* nada */
168	0	break;
169	0	}
170	0	}
171	0	}
172	0	}
173
174		/* Curl_failf() is for messages stating why we failed.
175		* The message SHALL NOT include any LF or CR.
176		*/
177		void Curl_failf(struct Curl_easy data, const char fmt, ...)
178	0	{
179	0	DEBUGASSERT(!strchr(fmt, '\n'));
180	0	if(data->set.verbose \|\| data->set.errorbuffer) {
181	0	va_list ap;
182	0	size_t len;
183	0	char error[CURL_ERROR_SIZE + 2];
184	0	va_start(ap, fmt);
185	0	len = curl_mvsnprintf(error, CURL_ERROR_SIZE, fmt, ap);
186
187	0	if(data->set.errorbuffer && !data->state.errorbuf) {
188	0	curlx_strcopy(data->set.errorbuffer, CURL_ERROR_SIZE, error, len);
189	0	data->state.errorbuf = TRUE; /* wrote error string */
190	0	}
191	0	error[len++] = '\n';
192	0	error[len] = '\0';
193	0	trc_write(data, CURLINFO_TEXT, error, len);
194	0	va_end(ap);
195	0	}
196	0	}
197
198		void Curl_reset_fail(struct Curl_easy *data)
199	0	{
200	0	if(data->set.errorbuffer)
201	0	data->set.errorbuffer[0] = 0;
202	0	data->state.errorbuf = FALSE;
203	0	}
204
205		#ifdef CURLVERBOSE
206		struct curl_trc_feat Curl_trc_feat_multi = {
207		"MULTI",
208		CURL_LOG_LVL_NONE,
209		};
210		struct curl_trc_feat Curl_trc_feat_read = {
211		"READ",
212		CURL_LOG_LVL_NONE,
213		};
214		struct curl_trc_feat Curl_trc_feat_write = {
215		"WRITE",
216		CURL_LOG_LVL_NONE,
217		};
218		struct curl_trc_feat Curl_trc_feat_dns = {
219		"DNS",
220		CURL_LOG_LVL_NONE,
221		};
222		struct curl_trc_feat Curl_trc_feat_timer = {
223		"TIMER",
224		CURL_LOG_LVL_NONE,
225		};
226		#ifdef USE_THREADS
227		struct curl_trc_feat Curl_trc_feat_threads = {
228		"THREADS",
229		CURL_LOG_LVL_NONE,
230		};
231		#endif
232		#endif
233
234		#ifndef CURL_DISABLE_VERBOSE_STRINGS
235
236		static void trc_infof(struct Curl_easy *data,
237		struct curl_trc_feat *feat,
238		const char *opt_id, int opt_id_idx,
239		const char * const fmt, va_list ap) CURL_PRINTF(5, 0);
240
241		static void trc_infof(struct Curl_easy *data,
242		struct curl_trc_feat *feat,
243		const char *opt_id, int opt_id_idx,
244		const char * const fmt, va_list ap)
245	0	{
246	0	size_t len = 0;
247	0	char buf[TRC_LINE_MAX];
248
249	0	if(CURL_TRC_IDS(data))
250	0	len += trc_print_ids(data, buf + len, TRC_LINE_MAX - len);
251	0	if(feat)
252	0	len += curl_msnprintf(buf + len, TRC_LINE_MAX - len, "[%s] ", feat->name);
253	0	if(opt_id) {
254	0	if(opt_id_idx > 0)
255	0	len += curl_msnprintf(buf + len, TRC_LINE_MAX - len, "[%s-%d] ",
256	0	opt_id, opt_id_idx);
257	0	else
258	0	len += curl_msnprintf(buf + len, TRC_LINE_MAX - len, "[%s] ", opt_id);
259	0	}
260	0	len += curl_mvsnprintf(buf + len, TRC_LINE_MAX - len, fmt, ap);
261	0	len = trc_end_buf(buf, len, TRC_LINE_MAX, TRUE);
262	0	trc_write(data, CURLINFO_TEXT, buf, len);
263	0	}
264
265		void Curl_infof(struct Curl_easy data, const char fmt, ...)
266	0	{
267	0	DEBUGASSERT(!strchr(fmt, '\n'));
268	0	if(Curl_trc_is_verbose(data)) {
269	0	va_list ap;
270	0	va_start(ap, fmt);
271	0	trc_infof(data, data->state.feat, NULL, 0, fmt, ap);
272	0	va_end(ap);
273	0	}
274	0	}
275
276		void Curl_trc_cf_infof(struct Curl_easy data, const struct Curl_cfilter cf,
277		const char *fmt, ...)
278	0	{
279	0	DEBUGASSERT(cf);
280	0	if(Curl_trc_cf_is_verbose(cf, data)) {
281	0	va_list ap;
282	0	va_start(ap, fmt);
283	0	trc_infof(data, data->state.feat, cf->cft->name, cf->sockindex, fmt, ap);
284	0	va_end(ap);
285	0	}
286	0	}
287
288		void Curl_trc_feat_infof(struct Curl_easy *data,
289		struct curl_trc_feat *feat,
290		const char *fmt, ...)
291	0	{
292	0	DEBUGASSERT(feat);
293	0	if(Curl_trc_ft_is_verbose(data, feat)) {
294	0	va_list ap;
295	0	va_start(ap, fmt);
296	0	trc_infof(data, feat, NULL, 0, fmt, ap);
297	0	va_end(ap);
298	0	}
299	0	}
300
301		static const char * const Curl_trc_timer_names[] = {
302		"100_TIMEOUT",
303		"ASYNC_NAME",
304		"CONNECTTIMEOUT",
305		"DNS_PER_NAME",
306		"DNS_PER_NAME2",
307		"HAPPY_EYEBALLS_DNS",
308		"HAPPY_EYEBALLS",
309		"MULTI_PENDING",
310		"SPEEDCHECK",
311		"TIMEOUT",
312		"TOOFAST",
313		"QUIC",
314		"FTP_ACCEPT",
315		"ALPN_EYEBALLS",
316		"SHUTDOWN",
317		};
318
319		static const char *trc_timer_name(int tid)
320	0	{
321	0	if((tid >= 0) && ((size_t)tid < CURL_ARRAYSIZE(Curl_trc_timer_names)))
322	0	return Curl_trc_timer_names[(size_t)tid];
323	0	return "UNKNOWN?";
324	0	}
325
326		void Curl_trc_timer(struct Curl_easy data, int tid, const char fmt, ...)
327	0	{
328	0	DEBUGASSERT(!strchr(fmt, '\n'));
329	0	if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_timer)) {
330	0	const char *tname = trc_timer_name(tid);
331	0	va_list ap;
332	0	va_start(ap, fmt);
333	0	trc_infof(data, &Curl_trc_feat_timer, tname, 0, fmt, ap);
334	0	va_end(ap);
335	0	}
336	0	}
337
338		void Curl_trc_easy_timers(struct Curl_easy *data)
339	0	{
340	0	if(CURL_TRC_TIMER_is_verbose(data)) {
341	0	struct Curl_llist_node *e = Curl_llist_head(&data->state.timeoutlist);
342	0	if(e) {
343	0	const struct curltime *pnow = Curl_pgrs_now(data);
344	0	while(e) {
345	0	struct time_node *n = Curl_node_elem(e);
346	0	e = Curl_node_next(e);
347	0	CURL_TRC_TIMER(data, n->eid, "expires in %" FMT_TIMEDIFF_T "ns",
348	0	curlx_ptimediff_us(&n->time, pnow));
349	0	}
350	0	}
351	0	}
352	0	}
353
354		static const char * const Curl_trc_mstate_names[] = {
355		"INIT",
356		"PENDING",
357		"SETUP",
358		"CONNECT",
359		"CONNECTING",
360		"PROTOCONNECT",
361		"PROTOCONNECTING",
362		"DO",
363		"DOING",
364		"DOING_MORE",
365		"DID",
366		"PERFORMING",
367		"RATELIMITING",
368		"DONE",
369		"COMPLETED",
370		"MSGSENT",
371		};
372
373		const char *Curl_trc_mstate_name(int state)
374	0	{
375	0	if((state >= 0) && ((size_t)state < CURL_ARRAYSIZE(Curl_trc_mstate_names)))
376	0	return Curl_trc_mstate_names[(size_t)state];
377	0	return "?";
378	0	}
379
380		void Curl_trc_multi(struct Curl_easy data, const char fmt, ...)
381	0	{
382	0	DEBUGASSERT(!strchr(fmt, '\n'));
383	0	if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_multi)) {
384	0	const char *sname = (data->id >= 0) ?
385	0	Curl_trc_mstate_name(data->mstate) : NULL;
386	0	va_list ap;
387	0	va_start(ap, fmt);
388	0	trc_infof(data, &Curl_trc_feat_multi, sname, 0, fmt, ap);
389	0	va_end(ap);
390	0	}
391	0	}
392
393		void Curl_trc_read(struct Curl_easy data, const char fmt, ...)
394	0	{
395	0	DEBUGASSERT(!strchr(fmt, '\n'));
396	0	if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_read)) {
397	0	va_list ap;
398	0	va_start(ap, fmt);
399	0	trc_infof(data, &Curl_trc_feat_read, NULL, 0, fmt, ap);
400	0	va_end(ap);
401	0	}
402	0	}
403
404		void Curl_trc_write(struct Curl_easy data, const char fmt, ...)
405	0	{
406	0	DEBUGASSERT(!strchr(fmt, '\n'));
407	0	if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_write)) {
408	0	va_list ap;
409	0	va_start(ap, fmt);
410	0	trc_infof(data, &Curl_trc_feat_write, NULL, 0, fmt, ap);
411	0	va_end(ap);
412	0	}
413	0	}
414
415		void Curl_trc_dns(struct Curl_easy data, const char fmt, ...)
416	0	{
417	0	DEBUGASSERT(!strchr(fmt, '\n'));
418	0	if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_dns)) {
419	0	va_list ap;
420	0	va_start(ap, fmt);
421	0	trc_infof(data, &Curl_trc_feat_dns, NULL, 0, fmt, ap);
422	0	va_end(ap);
423	0	}
424	0	}
425
426		#ifndef CURL_DISABLE_FTP
427		struct curl_trc_feat Curl_trc_feat_ftp = {
428		"FTP",
429		CURL_LOG_LVL_NONE,
430		};
431
432		void Curl_trc_ftp(struct Curl_easy data, const char fmt, ...)
433	0	{
434	0	DEBUGASSERT(!strchr(fmt, '\n'));
435	0	if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_ftp)) {
436	0	va_list ap;
437	0	va_start(ap, fmt);
438	0	trc_infof(data, &Curl_trc_feat_ftp, NULL, 0, fmt, ap);
439	0	va_end(ap);
440	0	}
441	0	}
442		#endif /* !CURL_DISABLE_FTP */
443
444		#ifndef CURL_DISABLE_SMTP
445		struct curl_trc_feat Curl_trc_feat_smtp = {
446		"SMTP",
447		CURL_LOG_LVL_NONE,
448		};
449
450		void Curl_trc_smtp(struct Curl_easy data, const char fmt, ...)
451		{
452		DEBUGASSERT(!strchr(fmt, '\n'));
453		if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_smtp)) {
454		va_list ap;
455		va_start(ap, fmt);
456		trc_infof(data, &Curl_trc_feat_smtp, NULL, 0, fmt, ap);
457		va_end(ap);
458		}
459		}
460		#endif /* !CURL_DISABLE_SMTP */
461
462		#ifdef USE_SSL
463		struct curl_trc_feat Curl_trc_feat_ssls = {
464		"SSLS",
465		CURL_LOG_LVL_NONE,
466		};
467
468		void Curl_trc_ssls(struct Curl_easy data, const char fmt, ...)
469		{
470		DEBUGASSERT(!strchr(fmt, '\n'));
471		if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_ssls)) {
472		va_list ap;
473		va_start(ap, fmt);
474		trc_infof(data, &Curl_trc_feat_ssls, NULL, 0, fmt, ap);
475		va_end(ap);
476		}
477		}
478		#endif /* USE_SSL */
479
480		#ifdef USE_SSH
481		struct curl_trc_feat Curl_trc_feat_ssh = {
482		"SSH",
483		CURL_LOG_LVL_NONE,
484		};
485
486		void Curl_trc_ssh(struct Curl_easy data, const char fmt, ...)
487		{
488		DEBUGASSERT(!strchr(fmt, '\n'));
489		if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_ssh)) {
490		va_list ap;
491		va_start(ap, fmt);
492		trc_infof(data, &Curl_trc_feat_ssh, NULL, 0, fmt, ap);
493		va_end(ap);
494		}
495		}
496		#endif /* USE_SSH */
497
498		#if !defined(CURL_DISABLE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP)
499		struct curl_trc_feat Curl_trc_feat_ws = {
500		"WS",
501		CURL_LOG_LVL_NONE,
502		};
503
504		void Curl_trc_ws(struct Curl_easy data, const char fmt, ...)
505		{
506		DEBUGASSERT(!strchr(fmt, '\n'));
507		if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_ws)) {
508		va_list ap;
509		va_start(ap, fmt);
510		trc_infof(data, &Curl_trc_feat_ws, NULL, 0, fmt, ap);
511		va_end(ap);
512		}
513		}
514		#endif /* !CURL_DISABLE_WEBSOCKETS && !CURL_DISABLE_HTTP */
515
516	0	#define TRC_CT_NONE 0
517	0	#define TRC_CT_PROTOCOL (1 << 0)
518	0	#define TRC_CT_NETWORK (1 << 1)
519	0	#define TRC_CT_PROXY (1 << 2)
520		#define TRC_CT_INTERNALS (1 << 3)
521
522		struct trc_feat_def {
523		struct curl_trc_feat *feat;
524		unsigned int category;
525		};
526
527		static struct trc_feat_def trc_feats[] = {
528		{ &Curl_trc_feat_ids, TRC_CT_INTERNALS },
529		{ &Curl_trc_feat_multi, TRC_CT_NETWORK },
530		{ &Curl_trc_feat_read, TRC_CT_NONE },
531		{ &Curl_trc_feat_write, TRC_CT_NONE },
532		{ &Curl_trc_feat_dns, TRC_CT_NETWORK },
533		{ &Curl_trc_feat_timer, TRC_CT_NETWORK },
534		#ifdef USE_THREADS
535		{ &Curl_trc_feat_threads, TRC_CT_NONE },
536		#endif
537		#ifndef CURL_DISABLE_FTP
538		{ &Curl_trc_feat_ftp, TRC_CT_PROTOCOL },
539		#endif
540		#ifndef CURL_DISABLE_SMTP
541		{ &Curl_trc_feat_smtp, TRC_CT_PROTOCOL },
542		#endif
543		#ifdef USE_SSL
544		{ &Curl_trc_feat_ssls, TRC_CT_NETWORK },
545		#endif
546		#ifdef USE_SSH
547		{ &Curl_trc_feat_ssh, TRC_CT_PROTOCOL },
548		#endif
549		#if !defined(CURL_DISABLE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP)
550		{ &Curl_trc_feat_ws, TRC_CT_PROTOCOL },
551		#endif
552		};
553
554		struct trc_cft_def {
555		struct Curl_cftype *cft;
556		unsigned int category;
557		};
558
559		static struct trc_cft_def trc_cfts[] = {
560		{ &Curl_cft_dns, TRC_CT_NETWORK },
561		{ &Curl_cft_tcp, TRC_CT_NETWORK },
562		{ &Curl_cft_udp, TRC_CT_NETWORK },
563		{ &Curl_cft_unix, TRC_CT_NETWORK },
564		{ &Curl_cft_tcp_accept, TRC_CT_NETWORK },
565		{ &Curl_cft_ip_happy, TRC_CT_NETWORK },
566		{ &Curl_cft_setup, TRC_CT_PROTOCOL },
567		#if !defined(CURL_DISABLE_HTTP) && defined(USE_NGHTTP2)
568		{ &Curl_cft_nghttp2, TRC_CT_PROTOCOL },
569		#endif
570		#ifdef USE_SSL
571		{ &Curl_cft_ssl, TRC_CT_NETWORK },
572		#ifndef CURL_DISABLE_PROXY
573		{ &Curl_cft_ssl_proxy, TRC_CT_PROXY },
574		#endif
575		#endif
576		#ifndef CURL_DISABLE_PROXY
577		#ifndef CURL_DISABLE_HTTP
578		{ &Curl_cft_h1_proxy, TRC_CT_PROXY },
579		#ifdef USE_NGHTTP2
580		{ &Curl_cft_h2_proxy, TRC_CT_PROXY },
581		#endif
582		{ &Curl_cft_http_proxy, TRC_CT_PROXY },
583		#endif /* !CURL_DISABLE_HTTP */
584		{ &Curl_cft_haproxy, TRC_CT_PROXY },
585		{ &Curl_cft_socks_proxy, TRC_CT_PROXY },
586		#endif /* !CURL_DISABLE_PROXY */
587		#if !defined(CURL_DISABLE_HTTP) && defined(USE_HTTP3)
588		{ &Curl_cft_http3, TRC_CT_PROTOCOL },
589		#endif
590		#ifndef CURL_DISABLE_HTTP
591		{ &Curl_cft_http_connect, TRC_CT_PROTOCOL },
592		#endif
593		};
594
595		static void trc_apply_level_by_name(struct Curl_str *token, int lvl)
596	0	{
597	0	size_t i;
598
599	0	for(i = 0; i < CURL_ARRAYSIZE(trc_cfts); ++i) {
600	0	if(curlx_str_casecompare(token, trc_cfts[i].cft->name)) {
601	0	trc_cfts[i].cft->log_level = lvl;
602	0	break;
603	0	}
604	0	}
605	0	for(i = 0; i < CURL_ARRAYSIZE(trc_feats); ++i) {
606	0	if(curlx_str_casecompare(token, trc_feats[i].feat->name)) {
607	0	trc_feats[i].feat->log_level = lvl;
608	0	break;
609	0	}
610	0	}
611	0	}
612
613		static void trc_apply_level_by_category(unsigned int category, int lvl)
614	0	{
615	0	size_t i;
616
617	0	for(i = 0; i < CURL_ARRAYSIZE(trc_cfts); ++i) {
618	0	if(!category \|\| (trc_cfts[i].category & category))
619	0	trc_cfts[i].cft->log_level = lvl;
620	0	}
621	0	for(i = 0; i < CURL_ARRAYSIZE(trc_feats); ++i) {
622	0	if(!category \|\| (trc_feats[i].category & category))
623	0	trc_feats[i].feat->log_level = lvl;
624	0	}
625	0	}
626
627		static CURLcode trc_opt(const char *config)
628	0	{
629	0	struct Curl_str out;
630	0	while(!curlx_str_until(&config, &out, 32, ',')) {
631	0	int lvl = CURL_LOG_LVL_INFO;
632	0	const char *token = curlx_str(&out);
633
634	0	if(*token == '-') {
635	0	lvl = CURL_LOG_LVL_NONE;
636	0	curlx_str_nudge(&out, 1);
637	0	}
638	0	else if(*token == '+')
639	0	curlx_str_nudge(&out, 1);
640
641	0	if(curlx_str_casecompare(&out, "all"))
642	0	trc_apply_level_by_category(TRC_CT_NONE, lvl);
643	0	else if(curlx_str_casecompare(&out, "protocol"))
644	0	trc_apply_level_by_category(TRC_CT_PROTOCOL, lvl);
645	0	else if(curlx_str_casecompare(&out, "network"))
646	0	trc_apply_level_by_category(TRC_CT_NETWORK, lvl);
647	0	else if(curlx_str_casecompare(&out, "proxy"))
648	0	trc_apply_level_by_category(TRC_CT_PROXY, lvl);
649	0	else if(curlx_str_casecompare(&out, "doh")) {
650	0	struct Curl_str dns = { "dns", 3 };
651	0	trc_apply_level_by_name(&dns, lvl);
652	0	}
653	0	else
654	0	trc_apply_level_by_name(&out, lvl);
655
656	0	if(curlx_str_single(&config, ','))
657	0	break;
658	0	}
659	0	return CURLE_OK;
660	0	}
661
662		CURLcode Curl_trc_opt(const char *config)
663	0	{
664	0	CURLcode result = config ? trc_opt(config) : CURLE_OK;
665		#ifdef DEBUGBUILD
666		/* CURL_DEBUG can override anything */
667		if(!result) {
668		const char *dbg_config = getenv("CURL_DEBUG");
669		if(dbg_config)
670		result = trc_opt(dbg_config);
671		}
672		#endif /* DEBUGBUILD */
673	0	return result;
674	0	}
675
676		CURLcode Curl_trc_init(void)
677	0	{
678		#ifdef DEBUGBUILD
679		return Curl_trc_opt(NULL);
680		#else
681	0	return CURLE_OK;
682	0	#endif
683	0	}
684
685		#else /* CURL_DISABLE_VERBOSE_STRINGS */
686
687		CURLcode Curl_trc_init(void)
688		{
689		return CURLE_OK;
690		}
691
692		void Curl_infof(struct Curl_easy data, const char fmt, ...)
693		{
694		(void)data;
695		(void)fmt;
696		}
697
698		void Curl_trc_cf_infof(struct Curl_easy data, const struct Curl_cfilter cf,
699		const char *fmt, ...)
700		{
701		(void)data;
702		(void)cf;
703		(void)fmt;
704		}
705
706		void Curl_trc_multi(struct Curl_easy data, const char fmt, ...)
707		{
708		(void)data;
709		(void)fmt;
710		}
711
712		void Curl_trc_write(struct Curl_easy data, const char fmt, ...)
713		{
714		(void)data;
715		(void)fmt;
716		}
717
718		void Curl_trc_dns(struct Curl_easy data, const char fmt, ...)
719		{
720		(void)data;
721		(void)fmt;
722		}
723
724		void Curl_trc_timer(struct Curl_easy data, int tid, const char fmt, ...)
725		{
726		(void)data;
727		(void)tid;
728		(void)fmt;
729		}
730
731		void Curl_trc_read(struct Curl_easy data, const char fmt, ...)
732		{
733		(void)data;
734		(void)fmt;
735		}
736
737		#ifndef CURL_DISABLE_FTP
738		void Curl_trc_ftp(struct Curl_easy data, const char fmt, ...)
739		{
740		(void)data;
741		(void)fmt;
742		}
743		#endif
744		#ifndef CURL_DISABLE_SMTP
745		void Curl_trc_smtp(struct Curl_easy data, const char fmt, ...)
746		{
747		(void)data;
748		(void)fmt;
749		}
750		#endif
751		#if !defined(CURL_DISABLE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP)
752		void Curl_trc_ws(struct Curl_easy data, const char fmt, ...)
753		{
754		(void)data;
755		(void)fmt;
756		}
757		#endif
758		#ifdef USE_SSH
759		void Curl_trc_ssh(struct Curl_easy data, const char fmt, ...)
760		{
761		(void)data;
762		(void)fmt;
763		}
764		#endif
765		#ifdef USE_SSL
766		void Curl_trc_ssls(struct Curl_easy data, const char fmt, ...)
767		{
768		(void)data;
769		(void)fmt;
770		}
771		#endif
772
773		#endif /* !CURL_DISABLE_VERBOSE_STRINGS */