/src/FreeRDP/libfreerdp/core/proxy.c

Source (jump to first uncovered line)
/**
 * FreeRDP: A Remote Desktop Protocol Implementation
 * HTTP Proxy support
 *
 * Copyright 2016 Christian Plattner <ccpp@gmx.at>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <ctype.h>
#include <errno.h>

#include <openssl/err.h>

#include "settings.h"
#include "proxy.h"
#include <freerdp/settings.h>
#include <freerdp/utils/proxy_utils.h>
#include <freerdp/crypto/crypto.h>
#include "tcp.h"

#include <winpr/assert.h>
#include <winpr/environment.h> /* For GetEnvironmentVariableA */

#define CRLF "\r\n"

#include <freerdp/log.h>
#define TAG FREERDP_TAG("core.proxy")

/* SOCKS Proxy auth methods by rfc1928 */
enum
{
  AUTH_M_NO_AUTH = 0,
  AUTH_M_GSSAPI = 1,
  AUTH_M_USR_PASS = 2
};

enum
{
  SOCKS_CMD_CONNECT = 1,
  SOCKS_CMD_BIND = 2,
  SOCKS_CMD_UDP_ASSOCIATE = 3
};

enum
{
  SOCKS_ADDR_IPV4 = 1,
  SOCKS_ADDR_FQDN = 3,
  SOCKS_ADDR_IPV6 = 4,
};

/* CONN REQ replies in enum. order */
static const char* rplstat[] = { "succeeded",
                               "general SOCKS server failure",
                               "connection not allowed by ruleset",
                               "Network unreachable",
                               "Host unreachable",
                               "Connection refused",
                               "TTL expired",
                               "Command not supported",
                               "Address type not supported" };

static BOOL http_proxy_connect(BIO* bufferedBio, const char* proxyUsername,
                               const char* proxyPassword, const char* hostname, UINT16 port);
static BOOL socks_proxy_connect(BIO* bufferedBio, const char* proxyUsername,
                                const char* proxyPassword, const char* hostname, UINT16 port);
static void proxy_read_environment(rdpSettings* settings, char* envname);

BOOL proxy_prepare(rdpSettings* settings, const char** lpPeerHostname, UINT16* lpPeerPort,
                   const char** lpProxyUsername, const char** lpProxyPassword)
{
  if (freerdp_settings_get_uint32(settings, FreeRDP_ProxyType) == PROXY_TYPE_IGNORE)
    return FALSE;

  /* For TSGateway, find the system HTTPS proxy automatically */
  if (freerdp_settings_get_uint32(settings, FreeRDP_ProxyType) == PROXY_TYPE_NONE)
    proxy_read_environment(settings, "https_proxy");

  if (freerdp_settings_get_uint32(settings, FreeRDP_ProxyType) == PROXY_TYPE_NONE)
    proxy_read_environment(settings, "HTTPS_PROXY");

  if (freerdp_settings_get_uint32(settings, FreeRDP_ProxyType) != PROXY_TYPE_NONE)
    proxy_read_environment(settings, "no_proxy");

  if (freerdp_settings_get_uint32(settings, FreeRDP_ProxyType) != PROXY_TYPE_NONE)
    proxy_read_environment(settings, "NO_PROXY");

  if (freerdp_settings_get_uint32(settings, FreeRDP_ProxyType) != PROXY_TYPE_NONE)
  {
    *lpPeerHostname = freerdp_settings_get_string(settings, FreeRDP_ProxyHostname);
    *lpPeerPort = freerdp_settings_get_uint16(settings, FreeRDP_ProxyPort);
    *lpProxyUsername = freerdp_settings_get_string(settings, FreeRDP_ProxyUsername);
    *lpProxyPassword = freerdp_settings_get_string(settings, FreeRDP_ProxyPassword);
    return TRUE;
  }

  return FALSE;
}

static BOOL value_to_int(const char* value, LONGLONG* result, LONGLONG min, LONGLONG max)
{
  long long rc = 0;

  if (!value || !result)
    return FALSE;

  errno = 0;
  rc = _strtoi64(value, NULL, 0);

  if (errno != 0)
    return FALSE;

  if ((rc < min) || (rc > max))
    return FALSE;

  *result = rc;
  return TRUE;
}

static BOOL cidr4_match(const struct in_addr* addr, const struct in_addr* net, BYTE bits)
{
  uint32_t mask = 0;
  uint32_t amask = 0;
  uint32_t nmask = 0;

  if (bits == 0)
    return TRUE;

  mask = htonl(0xFFFFFFFFu << (32 - bits));
  amask = addr->s_addr & mask;
  nmask = net->s_addr & mask;
  return amask == nmask;
}

static BOOL cidr6_match(const struct in6_addr* address, const struct in6_addr* network,
                        uint8_t bits)
{
  const uint32_t* a = (const uint32_t*)address;
  const uint32_t* n = (const uint32_t*)network;
  size_t bits_whole = 0;
  size_t bits_incomplete = 0;
  bits_whole = bits >> 5;
  bits_incomplete = bits & 0x1F;

  if (bits_whole)
  {
    if (memcmp(a, n, bits_whole << 2) != 0)
      return FALSE;
  }

  if (bits_incomplete)
  {
    uint32_t mask = htonl((0xFFFFFFFFu) << (32 - bits_incomplete));

    if ((a[bits_whole] ^ n[bits_whole]) & mask)
      return FALSE;
  }

  return TRUE;
}

static BOOL check_no_proxy(rdpSettings* settings, const char* no_proxy)
{
  const char* delimiter = ",";
  BOOL result = FALSE;
  char* current = NULL;
  char* copy = NULL;
  char* context = NULL;
  size_t host_len = 0;
  struct sockaddr_in sa4;
  struct sockaddr_in6 sa6;
  BOOL is_ipv4 = FALSE;
  BOOL is_ipv6 = FALSE;

  if (!no_proxy || !settings)
    return FALSE;

  if (inet_pton(AF_INET, settings->ServerHostname, &sa4.sin_addr) == 1)
    is_ipv4 = TRUE;
  else if (inet_pton(AF_INET6, settings->ServerHostname, &sa6.sin6_addr) == 1)
    is_ipv6 = TRUE;

  host_len = strlen(settings->ServerHostname);
  copy = _strdup(no_proxy);

  if (!copy)
    return FALSE;

  current = strtok_s(copy, delimiter, &context);

  while (current && !result)
  {
    const size_t currentlen = strlen(current);

    if (currentlen > 0)
    {
      WLog_DBG(TAG, "%s => %s (%" PRIdz ")", settings->ServerHostname, current, currentlen);

      /* detect left and right "*" wildcard */
      if (current[0] == '*')
      {
        if (host_len >= currentlen)
        {
          const size_t offset = host_len + 1 - currentlen;
          const char* name = settings->ServerHostname + offset;

          if (strncmp(current + 1, name, currentlen - 1) == 0)
            result = TRUE;
        }
      }
      else if (current[currentlen - 1] == '*')
      {
        if (strncmp(current, settings->ServerHostname, currentlen - 1) == 0)
          result = TRUE;
      }
      else if (current[0] ==
               '.') /* Only compare if the no_proxy variable contains a whole domain. */
      {
        if (host_len > currentlen)
        {
          const size_t offset = host_len - currentlen;
          const char* name = settings->ServerHostname + offset;

          if (strncmp(current, name, currentlen) == 0)
            result = TRUE; /* right-aligned match for host names */
        }
      }
      else if (strcmp(current, settings->ServerHostname) == 0)
        result = TRUE; /* exact match */
      else if (is_ipv4 || is_ipv6)
      {
        char* rangedelim = strchr(current, '/');

        /* Check for IP ranges */
        if (rangedelim != NULL)
        {
          const char* range = rangedelim + 1;
          unsigned sub = 0;
          int rc = sscanf(range, "%u", &sub);

          if ((rc == 1) && (rc >= 0) && (sub <= UINT8_MAX))
          {
            *rangedelim = '\0';

            if (is_ipv4)
            {
              struct sockaddr_in mask;

              if (inet_pton(AF_INET, current, &mask.sin_addr))
                result = cidr4_match(&sa4.sin_addr, &mask.sin_addr, sub);
            }
            else if (is_ipv6)
            {
              struct sockaddr_in6 mask;

              if (inet_pton(AF_INET6, current, &mask.sin6_addr))
                result = cidr6_match(&sa6.sin6_addr, &mask.sin6_addr, sub);
            }
          }
          else
            WLog_WARN(TAG, "NO_PROXY invalid entry %s", current);
        }
        else if (strncmp(current, settings->ServerHostname, currentlen) == 0)
          result = TRUE; /* left-aligned match for IPs */
      }
    }

    current = strtok_s(NULL, delimiter, &context);
  }

  free(copy);
  return result;
}

void proxy_read_environment(rdpSettings* settings, char* envname)
{
  const DWORD envlen = GetEnvironmentVariableA(envname, NULL, 0);

  if (!envlen || (envlen <= 1))
    return;

  char* env = calloc(1, envlen);

  if (!env)
  {
    WLog_ERR(TAG, "Not enough memory");
    return;
  }

  if (GetEnvironmentVariableA(envname, env, envlen) == envlen - 1)
  {
    if (_strnicmp("NO_PROXY", envname, 9) == 0)
    {
      if (check_no_proxy(settings, env))
      {
        WLog_INFO(TAG, "deactivating proxy: %s [%s=%s]",
                  freerdp_settings_get_string(settings, FreeRDP_ServerHostname), envname,
                  env);
        freerdp_settings_set_uint32(settings, FreeRDP_ProxyType, PROXY_TYPE_NONE);
      }
    }
    else
    {
      if (!proxy_parse_uri(settings, env))
      {
        WLog_WARN(
            TAG, "Error while parsing proxy URI from environment variable; ignoring proxy");
      }
    }
  }

  free(env);
}

BOOL proxy_parse_uri(rdpSettings* settings, const char* uri_in)
{
  BOOL rc = FALSE;
  const char* protocol = "";
  UINT16 port = 0;
  char* p = NULL;
  char* atPtr = NULL;
  char* uri_copy = _strdup(uri_in);
  char* uri = uri_copy;
  if (!uri)
    goto fail;

  p = strstr(uri, "://");

  if (p)
  {
    *p = '\0';

    if (_stricmp("no_proxy", uri) == 0)
    {
      if (!freerdp_settings_set_uint32(settings, FreeRDP_ProxyType, PROXY_TYPE_IGNORE))
        goto fail;
    }
    if (_stricmp("http", uri) == 0)
    {
      if (!freerdp_settings_set_uint32(settings, FreeRDP_ProxyType, PROXY_TYPE_HTTP))
        goto fail;
      protocol = "http";
    }
    else if (_stricmp("socks5", uri) == 0)
    {
      if (!freerdp_settings_set_uint32(settings, FreeRDP_ProxyType, PROXY_TYPE_SOCKS))
        goto fail;
      protocol = "socks5";
    }
    else
    {
      WLog_ERR(TAG, "Only HTTP and SOCKS5 proxies supported by now");
      goto fail;
    }

    uri = p + 3;
  }
  else
  {
    /* default proxy protocol is http */
    if (!freerdp_settings_set_uint32(settings, FreeRDP_ProxyType, PROXY_TYPE_HTTP))
      goto fail;
    protocol = "http";
  }

  /* uri is now [user:password@]hostname:port */
  atPtr = strrchr(uri, '@');

  if (atPtr)
  {
    /* got a login / password,
     *         atPtr
     *         v
     * [user:password@]hostname:port
     *    ^
     *    colonPtr
     */
    char* colonPtr = strchr(uri, ':');

    if (!colonPtr || (colonPtr > atPtr))
    {
      WLog_ERR(TAG, "invalid syntax for proxy (contains no password)");
      goto fail;
    }

    *colonPtr = '\0';
    if (!freerdp_settings_set_string(settings, FreeRDP_ProxyUsername, uri))
    {
      WLog_ERR(TAG, "unable to allocate proxy username");
      goto fail;
    }

    *atPtr = '\0';

    if (!freerdp_settings_set_string(settings, FreeRDP_ProxyPassword, colonPtr + 1))
    {
      WLog_ERR(TAG, "unable to allocate proxy password");
      goto fail;
    }

    uri = atPtr + 1;
  }

  p = strchr(uri, ':');

  if (p)
  {
    LONGLONG val = 0;

    if (!value_to_int(&p[1], &val, 0, UINT16_MAX))
    {
      WLog_ERR(TAG, "invalid syntax for proxy (invalid port)");
      goto fail;
    }

    if (val == 0)
    {
      WLog_ERR(TAG, "invalid syntax for proxy (port missing)");
      goto fail;
    }

    port = (UINT16)val;
    *p = '\0';
  }
  else
  {
    if (_stricmp("http", protocol) == 0)
    {
      /* The default is 80. Also for Proxys. */
      port = 80;
    }
    else
    {
      port = 1080;
    }

    WLog_DBG(TAG, "setting default proxy port: %" PRIu16, port);
  }

  if (!freerdp_settings_set_uint16(settings, FreeRDP_ProxyPort, port))
    goto fail;

  p = strchr(uri, '/');
  if (p)
    *p = '\0';
  if (!freerdp_settings_set_string(settings, FreeRDP_ProxyHostname, uri))
    goto fail;

  if (_stricmp("", uri) == 0)
  {
    WLog_ERR(TAG, "invalid syntax for proxy (hostname missing)");
    goto fail;
  }

  if (freerdp_settings_get_string(settings, FreeRDP_ProxyUsername))
  {
    WLog_INFO(TAG, "Parsed proxy configuration: %s://%s:%s@%s:%" PRIu16, protocol,
              freerdp_settings_get_string(settings, FreeRDP_ProxyUsername), "******",
              freerdp_settings_get_string(settings, FreeRDP_ProxyHostname),
              freerdp_settings_get_uint16(settings, FreeRDP_ProxyPort));
  }
  else
  {
    WLog_INFO(TAG, "Parsed proxy configuration: %s://%s:%" PRIu16, protocol,
              freerdp_settings_get_string(settings, FreeRDP_ProxyHostname),
              freerdp_settings_get_uint16(settings, FreeRDP_ProxyPort));
  }
  rc = TRUE;

fail:
  free(uri_copy);
  return rc;
}

BOOL proxy_connect(rdpSettings* settings, BIO* bufferedBio, const char* proxyUsername,
                   const char* proxyPassword, const char* hostname, UINT16 port)
{
  switch (freerdp_settings_get_uint32(settings, FreeRDP_ProxyType))
  {
    case PROXY_TYPE_NONE:
    case PROXY_TYPE_IGNORE:
      return TRUE;

    case PROXY_TYPE_HTTP:
      return http_proxy_connect(bufferedBio, proxyUsername, proxyPassword, hostname, port);

    case PROXY_TYPE_SOCKS:
      return socks_proxy_connect(bufferedBio, proxyUsername, proxyPassword, hostname, port);

    default:
      WLog_ERR(TAG, "Invalid internal proxy configuration");
      return FALSE;
  }
}

static const char* get_response_header(char* response)
{
  char* current_pos = strchr(response, '\r');
  if (!current_pos)
    current_pos = strchr(response, '\n');

  if (current_pos)
    *current_pos = '\0';

  return response;
}

static BOOL http_proxy_connect(BIO* bufferedBio, const char* proxyUsername,
                               const char* proxyPassword, const char* hostname, UINT16 port)
{
  BOOL rc = FALSE;
  int status = 0;
  wStream* s = NULL;
  char port_str[10] = { 0 };
  char recv_buf[256] = { 0 };
  char* eol = NULL;
  size_t resultsize = 0;
  size_t reserveSize = 0;
  size_t portLen = 0;
  size_t hostLen = 0;
  const char connect[] = "CONNECT ";
  const char httpheader[] = " HTTP/1.1" CRLF "Host: ";

  WINPR_ASSERT(bufferedBio);
  WINPR_ASSERT(hostname);

  _itoa_s(port, port_str, sizeof(port_str), 10);

  hostLen = strlen(hostname);
  portLen = strnlen(port_str, sizeof(port_str));
  reserveSize = strlen(connect) + (hostLen + 1 + portLen) * 2 + strlen(httpheader);
  s = Stream_New(NULL, reserveSize);
  if (!s)
    goto fail;

  Stream_Write(s, connect, strlen(connect));
  Stream_Write(s, hostname, hostLen);
  Stream_Write_UINT8(s, ':');
  Stream_Write(s, port_str, portLen);
  Stream_Write(s, httpheader, strlen(httpheader));
  Stream_Write(s, hostname, hostLen);
  Stream_Write_UINT8(s, ':');
  Stream_Write(s, port_str, portLen);

  if (proxyUsername && proxyPassword)
  {
    const int length = _scprintf("%s:%s", proxyUsername, proxyPassword);
    if (length > 0)
    {
      const size_t size = (size_t)length + 1ull;
      char* creds = (char*)malloc(size);

      if (!creds)
        goto fail;
      else
      {
        const char basic[] = CRLF "Proxy-Authorization: Basic ";
        char* base64 = NULL;

        sprintf_s(creds, size, "%s:%s", proxyUsername, proxyPassword);
        base64 = crypto_base64_encode((const BYTE*)creds, size - 1);

        if (!base64 || !Stream_EnsureRemainingCapacity(s, strlen(basic) + strlen(base64)))
        {
          free(base64);
          free(creds);
          goto fail;
        }
        Stream_Write(s, basic, strlen(basic));
        Stream_Write(s, base64, strlen(base64));

        free(base64);
      }
      free(creds);
    }
  }

  if (!Stream_EnsureRemainingCapacity(s, 4))
    goto fail;

  Stream_Write(s, CRLF CRLF, 4);
  ERR_clear_error();
  status = BIO_write(bufferedBio, Stream_Buffer(s), Stream_GetPosition(s));

  if ((status < 0) || ((size_t)status != Stream_GetPosition(s)))
  {
    WLog_ERR(TAG, "HTTP proxy: failed to write CONNECT request");
    goto fail;
  }

  /* Read result until CR-LF-CR-LF.
   * Keep recv_buf a null-terminated string. */
  while (strstr(recv_buf, CRLF CRLF) == NULL)
  {
    if (resultsize >= sizeof(recv_buf) - 1)
    {
      WLog_ERR(TAG, "HTTP Reply headers too long: %s", get_response_header(recv_buf));
      goto fail;
    }

    ERR_clear_error();
    status =
        BIO_read(bufferedBio, (BYTE*)recv_buf + resultsize, sizeof(recv_buf) - resultsize - 1);

    if (status < 0)
    {
      /* Error? */
      if (BIO_should_retry(bufferedBio))
      {
        USleep(100);
        continue;
      }

      WLog_ERR(TAG, "Failed reading reply from HTTP proxy (Status %d)", status);
      goto fail;
    }
    else if (status == 0)
    {
      /* Error? */
      WLog_ERR(TAG, "Failed reading reply from HTTP proxy (BIO_read returned zero)");
      goto fail;
    }

    resultsize += status;
  }

  /* Extract HTTP status line */
  eol = strchr(recv_buf, '\r');

  if (!eol)
  {
    /* should never happen */
    goto fail;
  }

  *eol = '\0';
  WLog_INFO(TAG, "HTTP Proxy: %s", recv_buf);

  if (strnlen(recv_buf, sizeof(recv_buf)) < 12)
    goto fail;

  recv_buf[7] = 'X';

  if (strncmp(recv_buf, "HTTP/1.X 200", 12))
    goto fail;

  rc = TRUE;
fail:
  Stream_Free(s, TRUE);
  return rc;
}

static int recv_socks_reply(BIO* bufferedBio, BYTE* buf, int len, char* reason, BYTE checkVer)
{
  int status = 0;

  for (;;)
  {
    ERR_clear_error();
    status = BIO_read(bufferedBio, buf, len);

    if (status > 0)
    {
      break;
    }
    else if (status < 0)
    {
      /* Error? */
      if (BIO_should_retry(bufferedBio))
      {
        USleep(100);
        continue;
      }

      WLog_ERR(TAG, "Failed reading %s reply from SOCKS proxy (Status %d)", reason, status);
      return -1;
    }
    else // if (status == 0)
    {
      /* Error? */
      WLog_ERR(TAG, "Failed reading %s reply from SOCKS proxy (BIO_read returned zero)",
               reason);
      return -1;
    }
  }

  if (status < 2)
  {
    WLog_ERR(TAG, "SOCKS Proxy reply packet too short (%s)", reason);
    return -1;
  }

  if (buf[0] != checkVer)
  {
    WLog_ERR(TAG, "SOCKS Proxy version is not 5 (%s)", reason);
    return -1;
  }

  return status;
}

static BOOL socks_proxy_connect(BIO* bufferedBio, const char* proxyUsername,
                                const char* proxyPassword, const char* hostname, UINT16 port)
{
  int status = 0;
  int nauthMethods = 1;
  int writeLen = 3;
  BYTE buf[3 + 255 + 255]; /* biggest packet is user/pass auth */
  size_t hostnlen = strnlen(hostname, 255);

  if (proxyUsername && proxyPassword)
  {
    nauthMethods++;
    writeLen++;
  }

  /* select auth. method */
  buf[0] = 5;            /* SOCKS version */
  buf[1] = nauthMethods; /* #of methods offered */
  buf[2] = AUTH_M_NO_AUTH;

  if (nauthMethods > 1)
    buf[3] = AUTH_M_USR_PASS;

  ERR_clear_error();
  status = BIO_write(bufferedBio, buf, writeLen);

  if (status != writeLen)
  {
    WLog_ERR(TAG, "SOCKS proxy: failed to write AUTH METHOD request");
    return FALSE;
  }

  status = recv_socks_reply(bufferedBio, buf, 2, "AUTH REQ", 5);

  if (status <= 0)
    return FALSE;

  switch (buf[1])
  {
    case AUTH_M_NO_AUTH:
      WLog_DBG(TAG, "SOCKS Proxy: (NO AUTH) method was selected");
      break;

    case AUTH_M_USR_PASS:
      if (!proxyUsername || !proxyPassword)
        return FALSE;
      else
      {
        int usernameLen = strnlen(proxyUsername, 255);
        int userpassLen = strnlen(proxyPassword, 255);
        BYTE* ptr = NULL;

        if (nauthMethods < 2)
        {
          WLog_ERR(TAG, "SOCKS Proxy: USER/PASS method was not proposed to server");
          return FALSE;
        }

        /* user/password v1 method */
        ptr = buf + 2;
        buf[0] = 1;
        buf[1] = usernameLen;
        memcpy(ptr, proxyUsername, usernameLen);
        ptr += usernameLen;
        *ptr = userpassLen;
        ptr++;
        memcpy(ptr, proxyPassword, userpassLen);
        ERR_clear_error();
        status = BIO_write(bufferedBio, buf, 3 + usernameLen + userpassLen);

        if (status != 3 + usernameLen + userpassLen)
        {
          WLog_ERR(TAG, "SOCKS Proxy: error writing user/password request");
          return FALSE;
        }

        status = recv_socks_reply(bufferedBio, buf, 2, "AUTH REQ", 1);

        if (status < 2)
          return FALSE;

        if (buf[1] != 0x00)
        {
          WLog_ERR(TAG, "SOCKS Proxy: invalid user/password");
          return FALSE;
        }
      }

      break;

    default:
      WLog_ERR(TAG, "SOCKS Proxy: unknown method 0x%x was selected by proxy", buf[1]);
      return FALSE;
  }

  /* CONN request */
  buf[0] = 5;                 /* SOCKS version */
  buf[1] = SOCKS_CMD_CONNECT; /* command */
  buf[2] = 0;                 /* 3rd octet is reserved x00 */
  buf[3] = SOCKS_ADDR_FQDN;   /* addr.type */
  buf[4] = hostnlen;          /* DST.ADDR */
  memcpy(buf + 5, hostname, hostnlen);
  /* follows DST.PORT in netw. format */
  buf[hostnlen + 5] = (port >> 8) & 0xff;
  buf[hostnlen + 6] = port & 0xff;
  ERR_clear_error();
  status = BIO_write(bufferedBio, buf, hostnlen + 7U);

  if ((status < 0) || ((size_t)status != (hostnlen + 7U)))
  {
    WLog_ERR(TAG, "SOCKS proxy: failed to write CONN REQ");
    return FALSE;
  }

  status = recv_socks_reply(bufferedBio, buf, sizeof(buf), "CONN REQ", 5);

  if (status < 4)
    return FALSE;

  if (buf[1] == 0)
  {
    WLog_INFO(TAG, "Successfully connected to %s:%" PRIu16, hostname, port);
    return TRUE;
  }

  if (buf[1] > 0 && buf[1] < 9)
    WLog_INFO(TAG, "SOCKS Proxy replied: %s", rplstat[buf[1]]);
  else
    WLog_INFO(TAG, "SOCKS Proxy replied: %" PRIu8 " status not listed in rfc1928", buf[1]);

  return FALSE;
}

Coverage Report

Created: 2024-05-20 06:11