/src/curl/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-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);
  }
}

#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,
};
#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);
  }
}

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",
  "RESOLVING",
  "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 },
#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_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(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: 2026-01-25 06:18

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-socket.h"
32		#include "connect.h"
33		#include "http2.h"
34		#include "http_proxy.h"
35		#include "cf-h1-proxy.h"
36		#include "cf-h2-proxy.h"
37		#include "cf-haproxy.h"
38		#include "cf-https-connect.h"
39		#include "cf-ip-happy.h"
40		#include "progress.h"
41		#include "socks.h"
42		#include "curlx/strparse.h"
43		#include "vtls/vtls.h"
44		#include "vquic/vquic.h"
45		#include "curlx/strcopy.h"
46
47		static void trc_write(struct Curl_easy *data, curl_infotype type,
48		const char *ptr, size_t size)
49	0	{
50	0	if(data->set.verbose) {
51	0	if(data->set.fdebug) {
52	0	bool inCallback = Curl_is_in_callback(data);
53	0	Curl_set_in_callback(data, TRUE);
54	0	(void)(*data->set.fdebug)(data, type, CURL_UNCONST(ptr), size,
55	0	data->set.debugdata);
56	0	Curl_set_in_callback(data, inCallback);
57	0	}
58	0	else {
59	0	static const char s_infotype[CURLINFO_END][3] = {
60	0	"* ", "< ", "> ", "{ ", "} ", "{ ", "} " };
61	0	switch(type) {
62	0	case CURLINFO_TEXT:
63	0	case CURLINFO_HEADER_OUT:
64	0	case CURLINFO_HEADER_IN:
65	0	fwrite(s_infotype[type], 2, 1, data->set.err);
66	0	fwrite(ptr, size, 1, data->set.err);
67	0	break;
68	0	default: /* nada */
69	0	break;
70	0	}
71	0	}
72	0	}
73	0	}
74
75		/* max length we trace before ending in '...' */
76	0	#define TRC_LINE_MAX 2048
77
78	0	#define CURL_TRC_FMT_IDSC "[x-%" CURL_FORMAT_CURL_OFF_T "] "
79	0	#define CURL_TRC_FMT_IDSD "[%" CURL_FORMAT_CURL_OFF_T "-x] "
80	0	#define CURL_TRC_FMT_IDSDC "[%" CURL_FORMAT_CURL_OFF_T "-%" \
81	0	CURL_FORMAT_CURL_OFF_T "] "
82
83		static struct curl_trc_feat Curl_trc_feat_ids = {
84		"LIB-IDS",
85		CURL_LOG_LVL_NONE,
86		};
87		#define CURL_TRC_IDS(data) \
88	0	(Curl_trc_is_verbose(data) && \
89	0	Curl_trc_feat_ids.log_level >= CURL_LOG_LVL_INFO)
90
91		static size_t trc_print_ids(struct Curl_easy data, char buf, size_t maxlen)
92	0	{
93	0	curl_off_t cid = data->conn ?
94	0	data->conn->connection_id : data->state.recent_conn_id;
95	0	if(data->id >= 0) {
96	0	if(cid >= 0)
97	0	return curl_msnprintf(buf, maxlen, CURL_TRC_FMT_IDSDC, data->id, cid);
98	0	else
99	0	return curl_msnprintf(buf, maxlen, CURL_TRC_FMT_IDSD, data->id);
100	0	}
101	0	else if(cid >= 0)
102	0	return curl_msnprintf(buf, maxlen, CURL_TRC_FMT_IDSC, cid);
103	0	else {
104	0	return curl_msnprintf(buf, maxlen, "[x-x] ");
105	0	}
106	0	}
107
108		static size_t trc_end_buf(char *buf, size_t len, size_t maxlen, bool addnl)
109	0	{
110		/* make sure we end the trace line in `buf` properly. It needs
111		* to end with a terminating '\0' or '\n\0' */
112	0	if(len >= (maxlen - (addnl ? 2 : 1))) {
113	0	len = maxlen - 5;
114	0	buf[len++] = '.';
115	0	buf[len++] = '.';
116	0	buf[len++] = '.';
117	0	buf[len++] = '\n';
118	0	}
119	0	else if(addnl)
120	0	buf[len++] = '\n';
121	0	buf[len] = '\0';
122	0	return len;
123	0	}
124
125		void Curl_debug(struct Curl_easy *data, curl_infotype type,
126		const char *ptr, size_t size)
127	3.17M	{
128	3.17M	if(data->set.verbose) {
129	0	static const char s_infotype[CURLINFO_END][3] = {
130	0	"* ", "< ", "> ", "{ ", "} ", "{ ", "} " };
131	0	char buf[TRC_LINE_MAX];
132	0	size_t len;
133	0	if(data->set.fdebug) {
134	0	bool inCallback = Curl_is_in_callback(data);
135
136	0	if(CURL_TRC_IDS(data) && (size < TRC_LINE_MAX)) {
137	0	len = trc_print_ids(data, buf, TRC_LINE_MAX);
138	0	len += curl_msnprintf(buf + len, TRC_LINE_MAX - len, "%.*s",
139	0	(int)size, ptr);
140	0	len = trc_end_buf(buf, len, TRC_LINE_MAX, FALSE);
141	0	Curl_set_in_callback(data, TRUE);
142	0	(void)(*data->set.fdebug)(data, type, buf, len, data->set.debugdata);
143	0	Curl_set_in_callback(data, inCallback);
144	0	}
145	0	else {
146	0	Curl_set_in_callback(data, TRUE);
147	0	(void)(*data->set.fdebug)(data, type, CURL_UNCONST(ptr),
148	0	size, data->set.debugdata);
149	0	Curl_set_in_callback(data, inCallback);
150	0	}
151	0	}
152	0	else {
153	0	switch(type) {
154	0	case CURLINFO_TEXT:
155	0	case CURLINFO_HEADER_OUT:
156	0	case CURLINFO_HEADER_IN:
157	0	#ifndef CURL_DISABLE_VERBOSE_STRINGS
158	0	if(CURL_TRC_IDS(data)) {
159	0	len = trc_print_ids(data, buf, TRC_LINE_MAX);
160	0	fwrite(buf, len, 1, data->set.err);
161	0	}
162	0	#endif
163	0	fwrite(s_infotype[type], 2, 1, data->set.err);
164	0	fwrite(ptr, size, 1, data->set.err);
165	0	break;
166	0	default: /* nada */
167	0	break;
168	0	}
169	0	}
170	0	}
171	3.17M	}
172
173		/* Curl_failf() is for messages stating why we failed.
174		* The message SHALL NOT include any LF or CR.
175		*/
176		void Curl_failf(struct Curl_easy data, const char fmt, ...)
177	223k	{
178	223k	DEBUGASSERT(!strchr(fmt, '\n'));
179	223k	if(data->set.verbose \|\| data->set.errorbuffer) {
180	0	va_list ap;
181	0	size_t len;
182	0	char error[CURL_ERROR_SIZE + 2];
183	0	va_start(ap, fmt);
184	0	len = curl_mvsnprintf(error, CURL_ERROR_SIZE, fmt, ap);
185
186	0	if(data->set.errorbuffer && !data->state.errorbuf) {
187	0	curlx_strcopy(data->set.errorbuffer, CURL_ERROR_SIZE, error, len);
188	0	data->state.errorbuf = TRUE; /* wrote error string */
189	0	}
190	0	error[len++] = '\n';
191	0	error[len] = '\0';
192	0	trc_write(data, CURLINFO_TEXT, error, len);
193	0	va_end(ap);
194	0	}
195	223k	}
196
197		#ifdef CURLVERBOSE
198		struct curl_trc_feat Curl_trc_feat_multi = {
199		"MULTI",
200		CURL_LOG_LVL_NONE,
201		};
202		struct curl_trc_feat Curl_trc_feat_read = {
203		"READ",
204		CURL_LOG_LVL_NONE,
205		};
206		struct curl_trc_feat Curl_trc_feat_write = {
207		"WRITE",
208		CURL_LOG_LVL_NONE,
209		};
210		struct curl_trc_feat Curl_trc_feat_dns = {
211		"DNS",
212		CURL_LOG_LVL_NONE,
213		};
214		struct curl_trc_feat Curl_trc_feat_timer = {
215		"TIMER",
216		CURL_LOG_LVL_NONE,
217		};
218		#endif
219
220		#ifndef CURL_DISABLE_VERBOSE_STRINGS
221
222		static void trc_infof(struct Curl_easy *data,
223		struct curl_trc_feat *feat,
224		const char *opt_id, int opt_id_idx,
225		const char * const fmt, va_list ap) CURL_PRINTF(5, 0);
226
227		static void trc_infof(struct Curl_easy *data,
228		struct curl_trc_feat *feat,
229		const char *opt_id, int opt_id_idx,
230		const char * const fmt, va_list ap)
231	0	{
232	0	size_t len = 0;
233	0	char buf[TRC_LINE_MAX];
234
235	0	if(CURL_TRC_IDS(data))
236	0	len += trc_print_ids(data, buf + len, TRC_LINE_MAX - len);
237	0	if(feat)
238	0	len += curl_msnprintf(buf + len, TRC_LINE_MAX - len, "[%s] ", feat->name);
239	0	if(opt_id) {
240	0	if(opt_id_idx > 0)
241	0	len += curl_msnprintf(buf + len, TRC_LINE_MAX - len, "[%s-%d] ",
242	0	opt_id, opt_id_idx);
243	0	else
244	0	len += curl_msnprintf(buf + len, TRC_LINE_MAX - len, "[%s] ", opt_id);
245	0	}
246	0	len += curl_mvsnprintf(buf + len, TRC_LINE_MAX - len, fmt, ap);
247	0	len = trc_end_buf(buf, len, TRC_LINE_MAX, TRUE);
248	0	trc_write(data, CURLINFO_TEXT, buf, len);
249	0	}
250
251		void Curl_infof(struct Curl_easy data, const char fmt, ...)
252	0	{
253	0	DEBUGASSERT(!strchr(fmt, '\n'));
254	0	if(Curl_trc_is_verbose(data)) {
255	0	va_list ap;
256	0	va_start(ap, fmt);
257	0	trc_infof(data, data->state.feat, NULL, 0, fmt, ap);
258	0	va_end(ap);
259	0	}
260	0	}
261
262		void Curl_trc_cf_infof(struct Curl_easy data, const struct Curl_cfilter cf,
263		const char *fmt, ...)
264	0	{
265	0	DEBUGASSERT(cf);
266	0	if(Curl_trc_cf_is_verbose(cf, data)) {
267	0	va_list ap;
268	0	va_start(ap, fmt);
269	0	trc_infof(data, data->state.feat, cf->cft->name, cf->sockindex, fmt, ap);
270	0	va_end(ap);
271	0	}
272	0	}
273
274		static const char * const Curl_trc_timer_names[] = {
275		"100_TIMEOUT",
276		"ASYNC_NAME",
277		"CONNECTTIMEOUT",
278		"DNS_PER_NAME",
279		"DNS_PER_NAME2",
280		"HAPPY_EYEBALLS_DNS",
281		"HAPPY_EYEBALLS",
282		"MULTI_PENDING",
283		"SPEEDCHECK",
284		"TIMEOUT",
285		"TOOFAST",
286		"QUIC",
287		"FTP_ACCEPT",
288		"ALPN_EYEBALLS",
289		"SHUTDOWN",
290		};
291
292		static const char *trc_timer_name(int tid)
293	0	{
294	0	if((tid >= 0) && ((size_t)tid < CURL_ARRAYSIZE(Curl_trc_timer_names)))
295	0	return Curl_trc_timer_names[(size_t)tid];
296	0	return "UNKNOWN?";
297	0	}
298
299		void Curl_trc_timer(struct Curl_easy data, int tid, const char fmt, ...)
300	0	{
301	0	DEBUGASSERT(!strchr(fmt, '\n'));
302	0	if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_timer)) {
303	0	const char *tname = trc_timer_name(tid);
304	0	va_list ap;
305	0	va_start(ap, fmt);
306	0	trc_infof(data, &Curl_trc_feat_timer, tname, 0, fmt, ap);
307	0	va_end(ap);
308	0	}
309	0	}
310
311		void Curl_trc_easy_timers(struct Curl_easy *data)
312	0	{
313	0	if(CURL_TRC_TIMER_is_verbose(data)) {
314	0	struct Curl_llist_node *e = Curl_llist_head(&data->state.timeoutlist);
315	0	if(e) {
316	0	const struct curltime *pnow = Curl_pgrs_now(data);
317	0	while(e) {
318	0	struct time_node *n = Curl_node_elem(e);
319	0	e = Curl_node_next(e);
320	0	CURL_TRC_TIMER(data, n->eid, "expires in %" FMT_TIMEDIFF_T "ns",
321	0	curlx_ptimediff_us(&n->time, pnow));
322	0	}
323	0	}
324	0	}
325	0	}
326
327		static const char * const Curl_trc_mstate_names[] = {
328		"INIT",
329		"PENDING",
330		"SETUP",
331		"CONNECT",
332		"RESOLVING",
333		"CONNECTING",
334		"PROTOCONNECT",
335		"PROTOCONNECTING",
336		"DO",
337		"DOING",
338		"DOING_MORE",
339		"DID",
340		"PERFORMING",
341		"RATELIMITING",
342		"DONE",
343		"COMPLETED",
344		"MSGSENT",
345		};
346
347		const char *Curl_trc_mstate_name(int state)
348	0	{
349	0	if((state >= 0) && ((size_t)state < CURL_ARRAYSIZE(Curl_trc_mstate_names)))
350	0	return Curl_trc_mstate_names[(size_t)state];
351	0	return "?";
352	0	}
353
354		void Curl_trc_multi(struct Curl_easy data, const char fmt, ...)
355	0	{
356	0	DEBUGASSERT(!strchr(fmt, '\n'));
357	0	if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_multi)) {
358	0	const char *sname = (data->id >= 0) ?
359	0	Curl_trc_mstate_name(data->mstate) : NULL;
360	0	va_list ap;
361	0	va_start(ap, fmt);
362	0	trc_infof(data, &Curl_trc_feat_multi, sname, 0, fmt, ap);
363	0	va_end(ap);
364	0	}
365	0	}
366
367		void Curl_trc_read(struct Curl_easy data, const char fmt, ...)
368	0	{
369	0	DEBUGASSERT(!strchr(fmt, '\n'));
370	0	if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_read)) {
371	0	va_list ap;
372	0	va_start(ap, fmt);
373	0	trc_infof(data, &Curl_trc_feat_read, NULL, 0, fmt, ap);
374	0	va_end(ap);
375	0	}
376	0	}
377
378		void Curl_trc_write(struct Curl_easy data, const char fmt, ...)
379	0	{
380	0	DEBUGASSERT(!strchr(fmt, '\n'));
381	0	if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_write)) {
382	0	va_list ap;
383	0	va_start(ap, fmt);
384	0	trc_infof(data, &Curl_trc_feat_write, NULL, 0, fmt, ap);
385	0	va_end(ap);
386	0	}
387	0	}
388
389		void Curl_trc_dns(struct Curl_easy data, const char fmt, ...)
390	0	{
391	0	DEBUGASSERT(!strchr(fmt, '\n'));
392	0	if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_dns)) {
393	0	va_list ap;
394	0	va_start(ap, fmt);
395	0	trc_infof(data, &Curl_trc_feat_dns, NULL, 0, fmt, ap);
396	0	va_end(ap);
397	0	}
398	0	}
399
400		#ifndef CURL_DISABLE_FTP
401		struct curl_trc_feat Curl_trc_feat_ftp = {
402		"FTP",
403		CURL_LOG_LVL_NONE,
404		};
405
406		void Curl_trc_ftp(struct Curl_easy data, const char fmt, ...)
407	0	{
408	0	DEBUGASSERT(!strchr(fmt, '\n'));
409	0	if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_ftp)) {
410	0	va_list ap;
411	0	va_start(ap, fmt);
412	0	trc_infof(data, &Curl_trc_feat_ftp, NULL, 0, fmt, ap);
413	0	va_end(ap);
414	0	}
415	0	}
416		#endif /* !CURL_DISABLE_FTP */
417
418		#ifndef CURL_DISABLE_SMTP
419		struct curl_trc_feat Curl_trc_feat_smtp = {
420		"SMTP",
421		CURL_LOG_LVL_NONE,
422		};
423
424		void Curl_trc_smtp(struct Curl_easy data, const char fmt, ...)
425	0	{
426	0	DEBUGASSERT(!strchr(fmt, '\n'));
427	0	if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_smtp)) {
428	0	va_list ap;
429	0	va_start(ap, fmt);
430	0	trc_infof(data, &Curl_trc_feat_smtp, NULL, 0, fmt, ap);
431	0	va_end(ap);
432	0	}
433	0	}
434		#endif /* !CURL_DISABLE_SMTP */
435
436		#ifdef USE_SSL
437		struct curl_trc_feat Curl_trc_feat_ssls = {
438		"SSLS",
439		CURL_LOG_LVL_NONE,
440		};
441
442		void Curl_trc_ssls(struct Curl_easy data, const char fmt, ...)
443	0	{
444	0	DEBUGASSERT(!strchr(fmt, '\n'));
445	0	if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_ssls)) {
446	0	va_list ap;
447	0	va_start(ap, fmt);
448	0	trc_infof(data, &Curl_trc_feat_ssls, NULL, 0, fmt, ap);
449	0	va_end(ap);
450	0	}
451	0	}
452		#endif /* USE_SSL */
453
454		#ifdef USE_SSH
455		struct curl_trc_feat Curl_trc_feat_ssh = {
456		"SSH",
457		CURL_LOG_LVL_NONE,
458		};
459
460		void Curl_trc_ssh(struct Curl_easy data, const char fmt, ...)
461		{
462		DEBUGASSERT(!strchr(fmt, '\n'));
463		if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_ssh)) {
464		va_list ap;
465		va_start(ap, fmt);
466		trc_infof(data, &Curl_trc_feat_ssh, NULL, 0, fmt, ap);
467		va_end(ap);
468		}
469		}
470		#endif /* USE_SSH */
471
472		#if !defined(CURL_DISABLE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP)
473		struct curl_trc_feat Curl_trc_feat_ws = {
474		"WS",
475		CURL_LOG_LVL_NONE,
476		};
477
478		void Curl_trc_ws(struct Curl_easy data, const char fmt, ...)
479	0	{
480	0	DEBUGASSERT(!strchr(fmt, '\n'));
481	0	if(Curl_trc_ft_is_verbose(data, &Curl_trc_feat_ws)) {
482	0	va_list ap;
483	0	va_start(ap, fmt);
484	0	trc_infof(data, &Curl_trc_feat_ws, NULL, 0, fmt, ap);
485	0	va_end(ap);
486	0	}
487	0	}
488		#endif /* !CURL_DISABLE_WEBSOCKETS && !CURL_DISABLE_HTTP */
489
490	0	#define TRC_CT_NONE (0)
491	0	#define TRC_CT_PROTOCOL (1 << 0)
492	0	#define TRC_CT_NETWORK (1 << 1)
493	0	#define TRC_CT_PROXY (1 << 2)
494		#define TRC_CT_INTERNALS (1 << 3)
495
496		struct trc_feat_def {
497		struct curl_trc_feat *feat;
498		unsigned int category;
499		};
500
501		static struct trc_feat_def trc_feats[] = {
502		{ &Curl_trc_feat_ids, TRC_CT_INTERNALS },
503		{ &Curl_trc_feat_multi, TRC_CT_NETWORK },
504		{ &Curl_trc_feat_read, TRC_CT_NONE },
505		{ &Curl_trc_feat_write, TRC_CT_NONE },
506		{ &Curl_trc_feat_dns, TRC_CT_NETWORK },
507		{ &Curl_trc_feat_timer, TRC_CT_NETWORK },
508		#ifndef CURL_DISABLE_FTP
509		{ &Curl_trc_feat_ftp, TRC_CT_PROTOCOL },
510		#endif
511		#ifndef CURL_DISABLE_SMTP
512		{ &Curl_trc_feat_smtp, TRC_CT_PROTOCOL },
513		#endif
514		#ifdef USE_SSL
515		{ &Curl_trc_feat_ssls, TRC_CT_NETWORK },
516		#endif
517		#ifdef USE_SSH
518		{ &Curl_trc_feat_ssh, TRC_CT_PROTOCOL },
519		#endif
520		#if !defined(CURL_DISABLE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP)
521		{ &Curl_trc_feat_ws, TRC_CT_PROTOCOL },
522		#endif
523		};
524
525		struct trc_cft_def {
526		struct Curl_cftype *cft;
527		unsigned int category;
528		};
529
530		static struct trc_cft_def trc_cfts[] = {
531		{ &Curl_cft_tcp, TRC_CT_NETWORK },
532		{ &Curl_cft_udp, TRC_CT_NETWORK },
533		{ &Curl_cft_unix, TRC_CT_NETWORK },
534		{ &Curl_cft_tcp_accept, TRC_CT_NETWORK },
535		{ &Curl_cft_ip_happy, TRC_CT_NETWORK },
536		{ &Curl_cft_setup, TRC_CT_PROTOCOL },
537		#if !defined(CURL_DISABLE_HTTP) && defined(USE_NGHTTP2)
538		{ &Curl_cft_nghttp2, TRC_CT_PROTOCOL },
539		#endif
540		#ifdef USE_SSL
541		{ &Curl_cft_ssl, TRC_CT_NETWORK },
542		#ifndef CURL_DISABLE_PROXY
543		{ &Curl_cft_ssl_proxy, TRC_CT_PROXY },
544		#endif
545		#endif
546		#ifndef CURL_DISABLE_PROXY
547		#ifndef CURL_DISABLE_HTTP
548		{ &Curl_cft_h1_proxy, TRC_CT_PROXY },
549		#ifdef USE_NGHTTP2
550		{ &Curl_cft_h2_proxy, TRC_CT_PROXY },
551		#endif
552		{ &Curl_cft_http_proxy, TRC_CT_PROXY },
553		#endif /* !CURL_DISABLE_HTTP */
554		{ &Curl_cft_haproxy, TRC_CT_PROXY },
555		{ &Curl_cft_socks_proxy, TRC_CT_PROXY },
556		#endif /* !CURL_DISABLE_PROXY */
557		#if !defined(CURL_DISABLE_HTTP) && defined(USE_HTTP3)
558		{ &Curl_cft_http3, TRC_CT_PROTOCOL },
559		#endif
560		#ifndef CURL_DISABLE_HTTP
561		{ &Curl_cft_http_connect, TRC_CT_PROTOCOL },
562		#endif
563		};
564
565		static void trc_apply_level_by_name(struct Curl_str *token, int lvl)
566	0	{
567	0	size_t i;
568
569	0	for(i = 0; i < CURL_ARRAYSIZE(trc_cfts); ++i) {
570	0	if(curlx_str_casecompare(token, trc_cfts[i].cft->name)) {
571	0	trc_cfts[i].cft->log_level = lvl;
572	0	break;
573	0	}
574	0	}
575	0	for(i = 0; i < CURL_ARRAYSIZE(trc_feats); ++i) {
576	0	if(curlx_str_casecompare(token, trc_feats[i].feat->name)) {
577	0	trc_feats[i].feat->log_level = lvl;
578	0	break;
579	0	}
580	0	}
581	0	}
582
583		static void trc_apply_level_by_category(int category, int lvl)
584	0	{
585	0	size_t i;
586
587	0	for(i = 0; i < CURL_ARRAYSIZE(trc_cfts); ++i) {
588	0	if(!category \|\| (trc_cfts[i].category & category))
589	0	trc_cfts[i].cft->log_level = lvl;
590	0	}
591	0	for(i = 0; i < CURL_ARRAYSIZE(trc_feats); ++i) {
592	0	if(!category \|\| (trc_feats[i].category & category))
593	0	trc_feats[i].feat->log_level = lvl;
594	0	}
595	0	}
596
597		static CURLcode trc_opt(const char *config)
598	0	{
599	0	struct Curl_str out;
600	0	while(!curlx_str_until(&config, &out, 32, ',')) {
601	0	int lvl = CURL_LOG_LVL_INFO;
602	0	const char *token = curlx_str(&out);
603
604	0	if(*token == '-') {
605	0	lvl = CURL_LOG_LVL_NONE;
606	0	curlx_str_nudge(&out, 1);
607	0	}
608	0	else if(*token == '+')
609	0	curlx_str_nudge(&out, 1);
610
611	0	if(curlx_str_casecompare(&out, "all"))
612	0	trc_apply_level_by_category(TRC_CT_NONE, lvl);
613	0	else if(curlx_str_casecompare(&out, "protocol"))
614	0	trc_apply_level_by_category(TRC_CT_PROTOCOL, lvl);
615	0	else if(curlx_str_casecompare(&out, "network"))
616	0	trc_apply_level_by_category(TRC_CT_NETWORK, lvl);
617	0	else if(curlx_str_casecompare(&out, "proxy"))
618	0	trc_apply_level_by_category(TRC_CT_PROXY, lvl);
619	0	else if(curlx_str_casecompare(&out, "doh")) {
620	0	struct Curl_str dns = { "dns", 3 };
621	0	trc_apply_level_by_name(&dns, lvl);
622	0	}
623	0	else
624	0	trc_apply_level_by_name(&out, lvl);
625
626	0	if(curlx_str_single(&config, ','))
627	0	break;
628	0	}
629	0	return CURLE_OK;
630	0	}
631
632		CURLcode Curl_trc_opt(const char *config)
633	16	{
634	16	CURLcode result = config ? trc_opt(config) : CURLE_OK;
635	16	#ifdef DEBUGBUILD
636		/* CURL_DEBUG can override anything */
637	16	if(!result) {
638	16	const char *dbg_config = getenv("CURL_DEBUG");
639	16	if(dbg_config)
640	0	result = trc_opt(dbg_config);
641	16	}
642	16	#endif /* DEBUGBUILD */
643	16	return result;
644	16	}
645
646		CURLcode Curl_trc_init(void)
647	16	{
648	16	#ifdef DEBUGBUILD
649	16	return Curl_trc_opt(NULL);
650		#else
651		return CURLE_OK;
652		#endif
653	16	}
654
655		#else /* CURL_DISABLE_VERBOSE_STRINGS */
656
657		CURLcode Curl_trc_init(void)
658		{
659		return CURLE_OK;
660		}
661
662		void Curl_infof(struct Curl_easy data, const char fmt, ...)
663		{
664		(void)data;
665		(void)fmt;
666		}
667
668		void Curl_trc_cf_infof(struct Curl_easy data, const struct Curl_cfilter cf,
669		const char *fmt, ...)
670		{
671		(void)data;
672		(void)cf;
673		(void)fmt;
674		}
675
676		void Curl_trc_multi(struct Curl_easy data, const char fmt, ...)
677		{
678		(void)data;
679		(void)fmt;
680		}
681
682		void Curl_trc_write(struct Curl_easy data, const char fmt, ...)
683		{
684		(void)data;
685		(void)fmt;
686		}
687
688		void Curl_trc_dns(struct Curl_easy data, const char fmt, ...)
689		{
690		(void)data;
691		(void)fmt;
692		}
693
694		void Curl_trc_timer(struct Curl_easy data, int tid, const char fmt, ...)
695		{
696		(void)data;
697		(void)tid;
698		(void)fmt;
699		}
700
701		void Curl_trc_read(struct Curl_easy data, const char fmt, ...)
702		{
703		(void)data;
704		(void)fmt;
705		}
706
707		#ifndef CURL_DISABLE_FTP
708		void Curl_trc_ftp(struct Curl_easy data, const char fmt, ...)
709		{
710		(void)data;
711		(void)fmt;
712		}
713		#endif
714		#ifndef CURL_DISABLE_SMTP
715		void Curl_trc_smtp(struct Curl_easy data, const char fmt, ...)
716		{
717		(void)data;
718		(void)fmt;
719		}
720		#endif
721		#if !defined(CURL_DISABLE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP)
722		void Curl_trc_ws(struct Curl_easy data, const char fmt, ...)
723		{
724		(void)data;
725		(void)fmt;
726		}
727		#endif
728		#ifdef USE_SSH
729		void Curl_trc_ssh(struct Curl_easy data, const char fmt, ...)
730		{
731		(void)data;
732		(void)fmt;
733		}
734		#endif
735		#ifdef USE_SSL
736		void Curl_trc_ssls(struct Curl_easy data, const char fmt, ...)
737		{
738		(void)data;
739		(void)fmt;
740		}
741		#endif
742
743		#endif /* !CURL_DISABLE_VERBOSE_STRINGS */