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1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ |
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2 /* |
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3 * Copyright (C) 2006 Imendio AB |
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4 * and/or its subsidiary/subsidiaries. All rights reserved. |
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5 * Copyright (C) 2007 Collabora Ltd. |
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6 * |
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7 * This program is free software; you can redistribute it and/or |
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8 * modify it under the terms of the GNU Lesser General Public License as |
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9 * published by the Free Software Foundation; either version 2 of the |
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10 * License, or (at your option) any later version. |
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11 * |
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12 * This program is distributed in the hope that it will be useful, |
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 * Lesser General Public License for more details. |
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16 * |
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17 * You should have received a copy of the GNU Lesser General Public |
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18 * License along with this program; if not, write to the |
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19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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20 * Boston, MA 02111-1307, USA. |
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21 */ |
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22 |
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23 #include <config.h> |
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24 |
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25 #include <string.h> |
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26 #include <sys/types.h> |
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27 |
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28 /* Needed on Mac OS X */ |
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29 #if HAVE_NETINET_IN_H |
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30 #include <netinet/in.h> |
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31 #endif |
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32 |
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33 /* Needed on Mac OS X */ |
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34 #if HAVE_ARPA_NAMESER_COMPAT_H |
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35 #include <arpa/nameser_compat.h> |
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36 #endif |
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37 |
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38 #include <arpa/nameser.h> |
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39 #include <resolv.h> |
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40 |
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41 #include "lm-debug.h" |
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42 #include "lm-internals.h" |
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43 #include "lm-misc.h" |
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44 #include "lm-ssl.h" |
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45 #include "lm-ssl-internals.h" |
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46 #include "lm-proxy.h" |
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47 #include "lm-socket.h" |
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48 #include "lm-sock.h" |
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49 #include "lm-error.h" |
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50 |
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51 #ifdef HAVE_ASYNCNS |
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52 #include <asyncns.h> |
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53 #define freeaddrinfo(x) asyncns_freeaddrinfo(x) |
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54 #endif |
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55 |
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56 #define IN_BUFFER_SIZE 1024 |
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57 #define MIN_PORT 1 |
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58 #define MAX_PORT 65536 |
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59 //#define SRV_LEN 8192 |
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60 #define SRV_LEN 512 // check the actual value needed here! - meco |
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61 |
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62 struct _LmSocket { |
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63 LmConnection *connection; |
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64 GMainContext *context; |
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65 |
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66 gchar *domain; |
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67 gchar *server; |
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68 guint port; |
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69 |
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70 gboolean blocking; |
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71 |
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72 LmSSL *ssl; |
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73 gboolean ssl_started; |
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74 LmProxy *proxy; |
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75 |
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76 GIOChannel *io_channel; |
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77 GSource *watch_in; |
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78 GSource *watch_err; |
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79 GSource *watch_hup; |
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80 |
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81 LmSocketT fd; |
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82 |
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83 GSource *watch_connect; |
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84 |
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85 gboolean cancel_open; |
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86 |
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87 GSource *watch_out; |
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88 GString *out_buf; |
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89 |
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90 LmConnectData *connect_data; |
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91 |
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92 IncomingDataFunc data_func; |
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93 SocketClosedFunc closed_func; |
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94 ConnectResultFunc connect_func; |
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95 gpointer user_data; |
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96 |
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97 guint ref_count; |
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98 |
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99 #ifdef HAVE_ASYNCNS |
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100 GSource *watch_resolv; |
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101 asyncns_query_t *resolv_query; |
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102 asyncns_t *asyncns_ctx; |
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103 GIOChannel *resolv_channel; |
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104 #endif |
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105 }; |
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106 |
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107 static void socket_free (LmSocket *socket); |
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108 static gboolean socket_do_connect (LmConnectData *connect_data); |
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109 static gboolean socket_connect_cb (GIOChannel *source, |
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110 GIOCondition condition, |
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111 LmConnectData *connect_data); |
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112 static gboolean socket_in_event (GIOChannel *source, |
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113 GIOCondition condition, |
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114 LmSocket *socket); |
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115 static gboolean socket_hup_event (GIOChannel *source, |
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116 GIOCondition condition, |
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117 LmSocket *socket); |
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118 static gboolean socket_error_event (GIOChannel *source, |
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119 GIOCondition condition, |
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120 LmSocket *socket); |
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121 static gboolean socket_buffered_write_cb (GIOChannel *source, |
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122 GIOCondition condition, |
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123 LmSocket *socket); |
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124 static gboolean socket_parse_srv_response (unsigned char *srv, |
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125 int srv_len, |
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126 gchar **out_server, |
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127 guint *out_port); |
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128 static void socket_close_io_channel (GIOChannel *io_channel); |
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129 |
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130 static void |
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131 socket_free (LmSocket *socket) |
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132 { |
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133 g_free (socket->server); |
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134 g_free (socket->domain); |
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135 |
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136 if (socket->ssl) { |
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137 lm_ssl_unref (socket->ssl); |
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138 } |
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139 |
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140 if (socket->proxy) { |
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141 lm_proxy_unref (socket->proxy); |
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142 } |
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143 |
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144 if (socket->out_buf) { |
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145 g_string_free (socket->out_buf, TRUE); |
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146 } |
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147 |
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148 g_free (socket); |
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149 } |
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150 |
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151 gint |
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152 lm_socket_do_write (LmSocket *socket, const gchar *buf, gint len) |
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153 { |
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154 gint b_written; |
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155 gint err; |
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156 if (socket->ssl_started) { |
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157 b_written = _lm_ssl_send (socket->ssl, buf, len); |
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158 } else { |
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159 GIOStatus io_status = G_IO_STATUS_AGAIN; |
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160 gsize bytes_written; |
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161 |
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162 while (io_status == G_IO_STATUS_AGAIN) { |
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163 io_status = g_io_channel_write_chars (socket->io_channel, |
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164 buf, len, |
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165 &bytes_written, |
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166 NULL); |
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167 } |
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168 |
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169 b_written = bytes_written; |
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170 |
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171 if (io_status != G_IO_STATUS_NORMAL) { |
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172 b_written = -1; |
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173 } |
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174 } |
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175 |
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176 err = _lm_sock_get_last_error (); |
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177 lm_verbose("[lm_socket_do_write]: socket write last error: %d\n\n",err); |
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178 return b_written; |
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179 } |
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180 |
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181 static gboolean |
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182 socket_read_incoming (LmSocket *socket, |
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183 gchar *buf, |
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184 gsize buf_size, |
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185 gsize *bytes_read, |
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186 gboolean *hangup, |
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187 gint *reason) |
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188 { |
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189 GIOStatus status; |
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190 |
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191 *hangup = FALSE; |
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192 |
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193 if (socket->ssl_started) { |
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194 status = _lm_ssl_read (socket->ssl, |
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195 buf, buf_size - 1, bytes_read); |
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196 } else { |
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197 status = g_io_channel_read_chars (socket->io_channel, |
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198 buf, buf_size - 1, |
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199 bytes_read, |
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200 NULL); |
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201 } |
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202 |
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203 //added by prima |
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204 if (status != G_IO_STATUS_NORMAL ) { |
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205 switch (status) { |
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206 case G_IO_STATUS_EOF: |
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207 *reason = LM_DISCONNECT_REASON_HUP; |
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208 break; |
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209 case G_IO_STATUS_AGAIN: |
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210 /* No data readable but we didn't hangup */ |
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211 return FALSE; |
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212 // break; |
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213 case G_IO_STATUS_ERROR: |
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214 *reason = LM_DISCONNECT_REASON_ERROR; |
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215 break; |
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216 default: |
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217 *reason = LM_DISCONNECT_REASON_UNKNOWN; |
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218 } |
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219 |
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220 /* Notify connection_in_event that we hangup the connection */ |
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221 *hangup = TRUE; |
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222 |
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223 return FALSE; |
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224 } |
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225 |
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226 if(*bytes_read>0) |
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227 { |
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228 buf[*bytes_read] = '\0'; |
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229 return TRUE; |
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230 } |
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231 |
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232 /* There is more data to be read */ |
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233 return FALSE; |
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234 //return TRUE; |
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235 } |
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236 |
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237 static gboolean |
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238 socket_in_event (GIOChannel *source, |
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239 GIOCondition condition, |
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240 LmSocket *socket) |
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241 { |
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242 gchar buf[IN_BUFFER_SIZE]; |
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243 gsize bytes_read = 0; |
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244 gboolean read_anything = FALSE; |
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245 gboolean hangup = 0; |
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246 gint reason = 0; |
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247 |
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248 if (!socket->io_channel) { |
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249 lm_verbose ( "[socket_in_event]:Error in io_channel\n"); |
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250 return FALSE; |
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251 } |
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252 |
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253 while (/*(condition & G_IO_IN) && */socket_read_incoming (socket, buf, IN_BUFFER_SIZE, |
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254 &bytes_read, &hangup, &reason)) { |
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255 |
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256 //g_log (LM_LOG_DOMAIN, LM_LOG_LEVEL_NET, "\nRECV [%d]:\n", |
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257 // (int)bytes_read); |
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258 //g_log (LM_LOG_DOMAIN, LM_LOG_LEVEL_NET, |
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259 // "-----------------------------------\n"); |
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260 //g_log (LM_LOG_DOMAIN, LM_LOG_LEVEL_NET, "'%s'\n", buf); |
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261 //g_log (LM_LOG_DOMAIN, LM_LOG_LEVEL_NET, |
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262 // "-----------------------------------\n"); |
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263 |
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264 lm_verbose ("\n[socket_in_event]: RECV [%d]:\n", (int)bytes_read); |
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265 lm_verbose ("-----------------------------------\n"); |
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266 lm_verbose ("'%s'\n", buf); |
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267 lm_verbose ( "-----------------------------------\n"); |
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268 lm_verbose ("Read: %d chars\n", (int)bytes_read); |
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269 |
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270 (socket->data_func) (socket, buf, socket->user_data); |
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271 |
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272 read_anything = TRUE; |
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273 |
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274 //condition = g_io_channel_get_buffer_condition (socket->io_channel); |
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275 } |
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276 |
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277 /* If we have read something, delay the hangup so that the data can be |
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278 * processed. */ |
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279 if (hangup && !read_anything) { |
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280 (socket->closed_func) (socket, reason, socket->user_data); |
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281 lm_verbose ( "[socket_in_event]:Error in hangup && !read_anything\n"); |
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282 return FALSE; |
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283 } |
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284 lm_verbose ( "[socket_in_event]:Returning TRUE\n"); |
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285 return TRUE; |
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286 } |
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287 |
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288 static gboolean |
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289 socket_hup_event (GIOChannel *source, |
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290 GIOCondition condition, |
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291 LmSocket *socket) |
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292 { |
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293 lm_verbose ("HUP event: %d->'%s'\n", |
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294 condition, lm_misc_io_condition_to_str (condition)); |
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295 |
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296 if (!socket->io_channel) { |
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297 return FALSE; |
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298 } |
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299 |
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300 (socket->closed_func) (socket, LM_DISCONNECT_REASON_HUP, |
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301 socket->user_data); |
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302 |
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303 return TRUE; |
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304 } |
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305 |
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306 static gboolean |
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307 socket_error_event (GIOChannel *source, |
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308 GIOCondition condition, |
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309 LmSocket *socket) |
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310 { |
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311 gint err =0; |
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312 lm_verbose ("[socket_error_event]: ERROR event: %d->'%s'\n", |
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313 condition, lm_misc_io_condition_to_str (condition)); |
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314 |
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315 err = _lm_sock_get_last_error (); |
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316 lm_verbose("[socket_error_event]: socket write last error: %d\n\n",err); |
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317 if (!socket->io_channel) { |
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318 return FALSE; |
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319 } |
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320 |
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321 (socket->closed_func) (socket, LM_DISCONNECT_REASON_ERROR, |
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322 socket->user_data); |
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323 |
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324 return TRUE; |
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325 } |
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326 |
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327 static gboolean |
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328 _lm_socket_ssl_init (LmSocket *socket, gboolean delayed) |
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329 { |
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330 GError *error = NULL; |
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331 const gchar *ssl_verify_domain = NULL; |
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332 |
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333 lm_verbose ("[_lm_socket_ssl_init] Setting up SSL...\n"); |
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334 |
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335 _lm_ssl_initialize (socket->ssl); |
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336 |
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337 #ifdef HAVE_GNUTLS |
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338 /* GNU TLS requires the socket to be blocking */ |
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339 _lm_sock_set_blocking (socket->fd, TRUE); |
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340 #endif |
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341 |
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342 /* If we're using StartTLS, the correct thing is to verify against |
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343 * the domain. If we're using old SSL, we should verify against the |
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344 * hostname. */ |
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345 if (delayed) |
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346 ssl_verify_domain = socket->domain; |
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347 else |
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348 ssl_verify_domain = socket->server; |
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349 |
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350 if (!_lm_ssl_begin (socket->ssl, socket->fd, ssl_verify_domain, &error)) { |
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351 lm_verbose ("Could not begin SSL\n"); |
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352 |
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353 if (error) { |
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354 /*g_log (LM_LOG_DOMAIN, LM_LOG_LEVEL_NET, |
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355 "%s\n", error->message); |
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356 */ |
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357 lm_verbose("[_lm_socket_ssl_init]: %s\n", error->message); |
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358 g_error_free (error); |
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359 } |
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360 lm_verbose("\n[_lm_socket_ssl_init]: shutting down the socket"); |
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361 _lm_sock_shutdown (socket->fd); |
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362 _lm_sock_close (socket->fd); |
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363 |
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364 if (!delayed && socket->connect_func) { |
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365 lm_verbose("\n[_lm_socket_ssl_init]: calling the socket connect callback if ssl begin failed"); |
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366 (socket->connect_func) (socket, FALSE, socket->user_data); |
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367 } |
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368 |
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369 return FALSE; |
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370 } |
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371 |
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372 #ifdef HAVE_GNUTLS |
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373 _lm_sock_set_blocking (socket->fd, FALSE); |
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374 #endif |
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375 |
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376 socket->ssl_started = TRUE; |
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377 |
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378 return TRUE; |
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379 } |
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380 |
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381 gboolean |
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382 lm_socket_starttls (LmSocket *socket) |
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383 { |
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384 g_return_val_if_fail (lm_ssl_get_use_starttls (socket->ssl) == TRUE, FALSE); |
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385 |
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386 return _lm_socket_ssl_init (socket, TRUE); |
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387 } |
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388 |
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389 |
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390 |
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391 void |
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392 _lm_socket_succeeded (LmConnectData *connect_data) |
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393 { |
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394 LmSocket *socket; |
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395 |
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396 socket = connect_data->socket; |
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397 |
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398 lm_verbose ("\n[_lm_socket_succeeded]:inside.. \n"); |
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399 if (socket->watch_connect) { |
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400 g_source_destroy (socket->watch_connect); |
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401 socket->watch_connect = NULL; |
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402 } |
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403 |
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404 /* Need some way to report error/success */ |
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405 if (socket->cancel_open) { |
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406 lm_verbose ("Cancelling connection...\n"); |
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407 if (socket->connect_func) { |
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408 (socket->connect_func) (socket, FALSE, socket->user_data); |
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409 } |
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410 return; |
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411 } |
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412 |
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413 socket->fd = connect_data->fd; |
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414 socket->io_channel = connect_data->io_channel; |
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415 |
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416 freeaddrinfo (connect_data->resolved_addrs); |
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417 socket->connect_data = NULL; |
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418 g_free (connect_data); |
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419 |
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420 /* old-style ssl should be started immediately */ |
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421 if (socket->ssl && (lm_ssl_get_use_starttls (socket->ssl) == FALSE)) { |
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422 if (!_lm_socket_ssl_init (socket, FALSE)) { |
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423 return; |
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424 } |
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425 } |
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426 |
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427 socket->watch_in = |
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428 lm_misc_add_io_watch (socket->context, |
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429 socket->io_channel, |
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430 G_IO_IN, |
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431 (GIOFunc) socket_in_event, |
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432 socket); |
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433 |
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434 /* FIXME: if we add these, we don't get ANY |
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435 * response from the server, this is to do with the way that |
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436 * windows handles watches, see bug #331214. |
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437 */ |
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438 #ifndef G_OS_WIN32 |
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439 socket->watch_err = |
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440 lm_misc_add_io_watch (socket->context, |
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441 socket->io_channel, |
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442 G_IO_ERR, |
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443 (GIOFunc) socket_error_event, |
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444 socket); |
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445 |
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446 socket->watch_hup = |
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447 lm_misc_add_io_watch (socket->context, |
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448 socket->io_channel, |
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449 G_IO_HUP, |
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450 (GIOFunc) socket_hup_event, |
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451 socket); |
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452 #endif |
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453 |
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454 if (socket->connect_func) { |
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455 (socket->connect_func) (socket, TRUE, socket->user_data); |
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456 } |
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457 } |
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458 |
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459 gboolean |
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460 _lm_socket_failed_with_error (LmConnectData *connect_data, int error) |
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461 { |
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462 LmSocket *socket; |
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463 |
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464 /*g_log (LM_LOG_DOMAIN, LM_LOG_LEVEL_NET, |
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465 "Connection failed: %s (error %d)\n", |
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466 _lm_sock_get_error_str (error), error);*/ |
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467 lm_verbose( "[_lm_socket_failed_with_error]: Connection failed: %s (error %d)\n",_lm_sock_get_error_str (error), error); |
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468 |
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469 socket = lm_socket_ref (connect_data->socket); |
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470 |
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471 connect_data->current_addr = connect_data->current_addr->ai_next; |
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472 |
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473 if (socket->watch_connect) { |
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474 g_source_destroy (socket->watch_connect); |
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475 socket->watch_connect = NULL; |
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476 } |
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477 |
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478 if (connect_data->io_channel != NULL) { |
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479 socket_close_io_channel (connect_data->io_channel); |
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480 } |
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481 |
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482 if (connect_data->current_addr == NULL) { |
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483 if (socket->connect_func) { |
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484 (socket->connect_func) (socket, FALSE, socket->user_data); |
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485 } |
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486 lm_verbose("\n\n[_lm_socket_failed_with_error]: connect_data->current_addr ==NULL"); |
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487 /* if the user callback called connection_close(), this is already freed */ |
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488 if (socket->connect_data != NULL) { |
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489 freeaddrinfo (connect_data->resolved_addrs); |
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490 socket->connect_data = NULL; |
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491 g_free (connect_data); |
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492 } |
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493 } else { |
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494 /* try to connect to the next host */ |
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495 lm_verbose("\n\n[_lm_socket_failed_with_error]: !!!!Trying to connect to the next host after socket connect failed with error\n"); |
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496 return socket_do_connect (connect_data); |
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497 } |
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498 |
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499 lm_socket_unref(socket); |
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500 |
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501 return FALSE; |
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502 } |
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503 |
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504 gboolean |
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505 _lm_socket_failed (LmConnectData *connect_data) |
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506 { |
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507 return _lm_socket_failed_with_error (connect_data, |
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508 _lm_sock_get_last_error()); |
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509 } |
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510 |
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511 static gboolean |
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512 socket_connect_cb (GIOChannel *source, |
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513 GIOCondition condition, |
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514 LmConnectData *connect_data) |
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515 { |
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516 LmSocket *socket; |
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517 struct addrinfo *addr; |
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518 int err; |
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519 socklen_t len; |
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520 LmSocketT fd; |
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521 gboolean result = FALSE; |
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522 |
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523 socket = lm_socket_ref (connect_data->socket); |
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524 addr = connect_data->current_addr; |
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525 fd = g_io_channel_unix_get_fd (source); |
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526 lm_verbose("\n[socket_connect_cb]: Inside socket_connect_cb\n"); |
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527 if (condition == G_IO_ERR) { |
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528 len = sizeof (err); |
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529 _lm_sock_get_error (fd, &err, &len); |
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530 if (!_lm_sock_is_blocking_error (err)) { |
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531 /*g_log (LM_LOG_DOMAIN, LM_LOG_LEVEL_NET, |
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532 "Connection failed.\n");*/ |
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533 lm_verbose( "[socket_conect_cb]: Connection failed.\n"); |
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534 |
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535 /* error condition, but might be possible to recover |
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536 * from it (by connecting to the next host) */ |
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537 if (!_lm_socket_failed_with_error (connect_data, err)) { |
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538 socket->watch_connect = NULL; |
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539 goto out; |
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540 } |
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541 } |
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542 } |
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543 |
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544 if (_lm_connection_async_connect_waiting (socket->connection)) { |
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545 gint res; |
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546 |
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547 fd = g_io_channel_unix_get_fd (source); |
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548 lm_verbose("\n[socket_conect_cb]: Async waiting calling _lm_sock_connect again\n"); |
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549 res = _lm_sock_connect (fd, addr->ai_addr, (int)addr->ai_addrlen); |
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550 if (res < 0) { |
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551 err = _lm_sock_get_last_error (); |
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552 if (_lm_sock_is_blocking_success (err)) { |
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553 _lm_connection_set_async_connect_waiting (socket->connection, FALSE); |
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554 |
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555 /*g_log (LM_LOG_DOMAIN, LM_LOG_LEVEL_NET, |
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556 "Connection success (1).\n");*/ |
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557 lm_verbose("[socket_connect_cb]: connection success"); |
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558 _lm_socket_succeeded (connect_data); |
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559 } |
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560 |
|
561 if (_lm_connection_async_connect_waiting (socket->connection) && |
|
562 !_lm_sock_is_blocking_error (err)) { |
|
563 /*g_log (LM_LOG_DOMAIN, LM_LOG_LEVEL_NET, |
|
564 "Connection failed.\n");*/ |
|
565 lm_verbose("[socket_conect_cb]: connection failed"); |
|
566 _lm_sock_close (connect_data->fd); |
|
567 _lm_socket_failed_with_error (connect_data, err); |
|
568 |
|
569 socket->watch_connect = NULL; |
|
570 goto out; |
|
571 } |
|
572 } |
|
573 } else { |
|
574 /* for blocking sockets, G_IO_OUT means we are connected */ |
|
575 /*g_log (LM_LOG_DOMAIN, LM_LOG_LEVEL_NET, |
|
576 "Connection success (2).\n");*/ |
|
577 lm_verbose("[socket_conect_cb]: Connection success (2).\n"); |
|
578 _lm_socket_succeeded (connect_data); |
|
579 } |
|
580 |
|
581 result = TRUE; |
|
582 |
|
583 out: |
|
584 lm_socket_unref(socket); |
|
585 |
|
586 return result; |
|
587 } |
|
588 |
|
589 static gboolean |
|
590 socket_do_connect (LmConnectData *connect_data) |
|
591 { |
|
592 LmSocket *socket; |
|
593 LmSocketT fd; |
|
594 int res, err; |
|
595 int port; |
|
596 char name[NI_MAXHOST]; |
|
597 char portname[NI_MAXSERV]; |
|
598 struct addrinfo *addr; |
|
599 |
|
600 socket = connect_data->socket; |
|
601 addr = connect_data->current_addr; |
|
602 |
|
603 if (socket->proxy) { |
|
604 port = htons (lm_proxy_get_port (socket->proxy)); |
|
605 } else { |
|
606 port = htons (socket->port); |
|
607 } |
|
608 |
|
609 ((struct sockaddr_in *) addr->ai_addr)->sin_port = port; |
|
610 |
|
611 res = getnameinfo (addr->ai_addr, |
|
612 (socklen_t)addr->ai_addrlen, |
|
613 name, sizeof (name), |
|
614 portname, sizeof (portname), |
|
615 NI_NUMERICHOST | NI_NUMERICSERV); |
|
616 |
|
617 if (res < 0) { |
|
618 return _lm_socket_failed (connect_data); |
|
619 } |
|
620 |
|
621 /*g_log (LM_LOG_DOMAIN, LM_LOG_LEVEL_NET, |
|
622 "Trying %s port %s...\n", name, portname);*/ |
|
623 lm_verbose("[socket_do_connect]: Trying %s port %s...\n", name, portname); |
|
624 lm_verbose("[socket_do_connect]: calling make socket\n"); |
|
625 fd = _lm_sock_makesocket (addr->ai_family, |
|
626 addr->ai_socktype, |
|
627 addr->ai_protocol); |
|
628 lm_verbose("[socket_do_connet]: called make socket and fd"); |
|
629 lm_verbose("[socket_do_connect]: The value of FD is :%d",fd); |
|
630 if (!_LM_SOCK_VALID (fd)) { |
|
631 /*g_log (LM_LOG_DOMAIN, LM_LOG_LEVEL_NET, |
|
632 "Failed making socket, error:%d...\n", |
|
633 _lm_sock_get_last_error ());*/ |
|
634 lm_verbose( "[socket_do_connect]: Failed making socket, error:[%d]...\n", _lm_sock_get_last_error ()); |
|
635 |
|
636 return _lm_socket_failed (connect_data); |
|
637 } |
|
638 |
|
639 /* Even though it says _unix_new(), it is supported by glib on |
|
640 * win32 because glib does some cool stuff to find out if it |
|
641 * can treat it as a FD or a windows SOCKET. |
|
642 */ |
|
643 connect_data->fd = fd; |
|
644 connect_data->io_channel = g_io_channel_unix_new (fd); |
|
645 |
|
646 g_io_channel_set_encoding (connect_data->io_channel, NULL, NULL); |
|
647 g_io_channel_set_buffered (connect_data->io_channel, FALSE); |
|
648 |
|
649 //_lm_sock_set_blocking (connect_data->fd, socket->blocking); |
|
650 |
|
651 if (socket->proxy) { |
|
652 socket->watch_connect = |
|
653 lm_misc_add_io_watch (socket->context, |
|
654 connect_data->io_channel, |
|
655 G_IO_OUT|G_IO_ERR, |
|
656 (GIOFunc) _lm_proxy_connect_cb, |
|
657 connect_data); |
|
658 } else { |
|
659 socket->watch_connect = |
|
660 lm_misc_add_io_watch (socket->context, |
|
661 connect_data->io_channel, |
|
662 G_IO_OUT|G_IO_ERR, |
|
663 (GIOFunc) socket_connect_cb, |
|
664 connect_data); |
|
665 } |
|
666 |
|
667 _lm_connection_set_async_connect_waiting (socket->connection, !socket->blocking); |
|
668 lm_verbose("\n[socket_do_connect]: calling _lm_sock_connect\n"); |
|
669 _lm_sock_set_blocking (connect_data->fd, TRUE); //prima |
|
670 errno =0; |
|
671 res = _lm_sock_connect (connect_data->fd, |
|
672 addr->ai_addr, (int)addr->ai_addrlen); |
|
673 err = _lm_sock_get_last_error (); |
|
674 lm_verbose("[socket_do_connect]: socket connect last error: [%d]\n",err); |
|
675 if (res < 0) { |
|
676 //err = _lm_sock_get_last_error (); |
|
677 lm_verbose("[socket_do_connect]: socket connect last error: %d\n",err); |
|
678 if (!_lm_sock_is_blocking_error (err)) { |
|
679 _lm_sock_close (connect_data->fd); |
|
680 return _lm_socket_failed_with_error (connect_data, err); |
|
681 } |
|
682 } |
|
683 _lm_sock_set_blocking (connect_data->fd, FALSE);//prima |
|
684 return TRUE; |
|
685 } |
|
686 |
|
687 gboolean |
|
688 lm_socket_output_is_buffered (LmSocket *socket, |
|
689 const gchar *buffer, |
|
690 gint len) |
|
691 { |
|
692 if (socket->out_buf) { |
|
693 lm_verbose ("Appending %d bytes to output buffer\n", len); |
|
694 g_string_append_len (socket->out_buf, buffer, len); |
|
695 return TRUE; |
|
696 } |
|
697 |
|
698 return FALSE; |
|
699 } |
|
700 |
|
701 void |
|
702 lm_socket_setup_output_buffer (LmSocket *socket, const gchar *buffer, gint len) |
|
703 { |
|
704 lm_verbose ("OUTPUT BUFFER ENABLED\n"); |
|
705 |
|
706 socket->out_buf = g_string_new_len (buffer, len); |
|
707 |
|
708 socket->watch_out = |
|
709 lm_misc_add_io_watch (socket->context, |
|
710 socket->io_channel, |
|
711 G_IO_OUT, |
|
712 (GIOFunc) socket_buffered_write_cb, |
|
713 socket); |
|
714 } |
|
715 |
|
716 static gboolean |
|
717 socket_buffered_write_cb (GIOChannel *source, |
|
718 GIOCondition condition, |
|
719 LmSocket *socket) |
|
720 { |
|
721 gint b_written; |
|
722 GString *out_buf; |
|
723 /* FIXME: Do the writing */ |
|
724 |
|
725 out_buf = socket->out_buf; |
|
726 if (!out_buf) { |
|
727 /* Should not be possible */ |
|
728 return FALSE; |
|
729 } |
|
730 |
|
731 b_written = lm_socket_do_write (socket, out_buf->str, out_buf->len); |
|
732 |
|
733 if (b_written < 0) { |
|
734 (socket->closed_func) (socket, LM_DISCONNECT_REASON_ERROR, |
|
735 socket->user_data); |
|
736 return FALSE; |
|
737 } |
|
738 |
|
739 g_string_erase (out_buf, 0, (gsize) b_written); |
|
740 if (out_buf->len == 0) { |
|
741 lm_verbose ("Output buffer is empty, going back to normal output\n"); |
|
742 |
|
743 if (socket->watch_out) { |
|
744 g_source_destroy (socket->watch_out); |
|
745 socket->watch_out = NULL; |
|
746 } |
|
747 |
|
748 g_string_free (out_buf, TRUE); |
|
749 socket->out_buf = NULL; |
|
750 return FALSE; |
|
751 } |
|
752 |
|
753 return TRUE; |
|
754 } |
|
755 |
|
756 static gboolean |
|
757 socket_parse_srv_response (unsigned char *srv, |
|
758 int srv_len, |
|
759 gchar **out_server, |
|
760 guint *out_port) |
|
761 { |
|
762 /* int qdcount; |
|
763 int ancount; |
|
764 int len; |
|
765 const unsigned char *pos; |
|
766 unsigned char *end; |
|
767 HEADER *head; |
|
768 char name[256]; |
|
769 char pref_name[256]; |
|
770 guint pref_port = 0; |
|
771 guint pref_prio = 9999; |
|
772 |
|
773 pref_name[0] = 0; |
|
774 |
|
775 pos = srv + sizeof (HEADER); |
|
776 end = srv + srv_len; |
|
777 head = (HEADER *) srv; |
|
778 |
|
779 qdcount = ntohs (head->qdcount); |
|
780 ancount = ntohs (head->ancount); |
|
781 |
|
782 // Ignore the questions |
|
783 while (qdcount-- > 0 && (len = dn_expand (srv, end, pos, name, 255)) >= 0) { |
|
784 g_assert (len >= 0); |
|
785 pos += len + QFIXEDSZ; |
|
786 } |
|
787 |
|
788 // Parse the answers |
|
789 while (ancount-- > 0 && (len = dn_expand (srv, end, pos, name, 255)) >= 0) { |
|
790 // Ignore the initial string |
|
791 uint16_t pref, weight, port; |
|
792 |
|
793 g_assert (len >= 0); |
|
794 pos += len; |
|
795 // Ignore type, ttl, class and dlen |
|
796 pos += 10; |
|
797 GETSHORT (pref, pos); |
|
798 GETSHORT (weight, pos); |
|
799 GETSHORT (port, pos); |
|
800 |
|
801 len = dn_expand (srv, end, pos, name, 255); |
|
802 if (pref < pref_prio) { |
|
803 pref_prio = pref; |
|
804 strcpy (pref_name, name); |
|
805 pref_port = port; |
|
806 } |
|
807 pos += len; |
|
808 } |
|
809 |
|
810 if (pref_name[0]) { |
|
811 *out_server = g_strdup (pref_name); |
|
812 *out_port = pref_port; |
|
813 return TRUE; |
|
814 } */ |
|
815 return FALSE; |
|
816 } |
|
817 |
|
818 static void |
|
819 socket_close_io_channel (GIOChannel *io_channel) |
|
820 { |
|
821 gint fd; |
|
822 |
|
823 g_log (LM_LOG_DOMAIN, LM_LOG_LEVEL_NET, |
|
824 "Freeing up IOChannel and file descriptor\n"); |
|
825 |
|
826 fd = g_io_channel_unix_get_fd (io_channel); |
|
827 |
|
828 g_io_channel_unref (io_channel); |
|
829 |
|
830 _lm_sock_close (fd); |
|
831 } |
|
832 |
|
833 static void |
|
834 _lm_socket_create_phase1 (LmSocket *socket, unsigned char *srv_ans, int len); |
|
835 static void |
|
836 _lm_socket_create_phase2 (LmSocket *socket, struct addrinfo *ans); |
|
837 |
|
838 #ifdef HAVE_ASYNCNS |
|
839 #define PHASE_1 0 |
|
840 #define PHASE_2 1 |
|
841 |
|
842 static gboolean |
|
843 _lm_socket_resolver_done (GSource *source, |
|
844 GIOCondition condition, |
|
845 gpointer data); |
|
846 |
|
847 |
|
848 static void |
|
849 _asyncns_done (LmSocket *socket) |
|
850 { |
|
851 if (socket->resolv_channel != NULL) { |
|
852 g_io_channel_unref (socket->resolv_channel); |
|
853 socket->resolv_channel = NULL; |
|
854 } |
|
855 |
|
856 if (socket->watch_resolv) { |
|
857 g_source_destroy(socket->watch_resolv); |
|
858 socket->watch_resolv = NULL; |
|
859 } |
|
860 |
|
861 if (socket->asyncns_ctx) { |
|
862 asyncns_free (socket->asyncns_ctx); |
|
863 socket->asyncns_ctx = NULL; |
|
864 } |
|
865 |
|
866 socket->resolv_query = NULL; |
|
867 } |
|
868 |
|
869 void _asyncns_cancel (LmSocket *socket) |
|
870 { |
|
871 if (socket == NULL) |
|
872 return; |
|
873 |
|
874 if (socket->asyncns_ctx) { |
|
875 if (socket->resolv_query) |
|
876 asyncns_cancel (socket->asyncns_ctx, socket->resolv_query); |
|
877 |
|
878 _asyncns_done (socket); |
|
879 } |
|
880 } |
|
881 |
|
882 static gboolean |
|
883 _asyncns_prep (LmSocket *socket, GError **error) |
|
884 { |
|
885 if (socket->asyncns_ctx) { |
|
886 return TRUE; |
|
887 } |
|
888 |
|
889 socket->asyncns_ctx = asyncns_new (1); |
|
890 if (socket->asyncns_ctx == NULL) { |
|
891 g_set_error (error, |
|
892 LM_ERROR, |
|
893 LM_ERROR_CONNECTION_FAILED, |
|
894 "can't initialise libasyncns"); |
|
895 return FALSE; |
|
896 } |
|
897 |
|
898 socket->resolv_channel = |
|
899 g_io_channel_unix_new (asyncns_fd (socket->asyncns_ctx)); |
|
900 |
|
901 socket->watch_resolv = |
|
902 lm_misc_add_io_watch (socket->context, |
|
903 socket->resolv_channel, |
|
904 G_IO_IN, |
|
905 (GIOFunc) _lm_socket_resolver_done, |
|
906 socket); |
|
907 |
|
908 return TRUE; |
|
909 } |
|
910 |
|
911 static gboolean |
|
912 _lm_socket_resolver_done (GSource *source, |
|
913 GIOCondition condition, |
|
914 gpointer data) |
|
915 { |
|
916 LmSocket *socket = lm_socket_ref ((LmSocket *) data); |
|
917 struct addrinfo *ans; |
|
918 unsigned char *srv_ans; |
|
919 int err; |
|
920 gboolean result = FALSE; |
|
921 |
|
922 /* process pending data */ |
|
923 asyncns_wait (socket->asyncns_ctx, FALSE); |
|
924 |
|
925 if (!asyncns_isdone (socket->asyncns_ctx, socket->resolv_query)) { |
|
926 result = TRUE; |
|
927 } else { |
|
928 switch ((guint) asyncns_getuserdata (socket->asyncns_ctx, socket->resolv_query)) { |
|
929 case PHASE_1: |
|
930 err = asyncns_res_done (socket->asyncns_ctx, socket->resolv_query, &srv_ans); |
|
931 socket->resolv_query = NULL; |
|
932 _lm_socket_create_phase1 (socket, (err <= 0) ? NULL : srv_ans, err); |
|
933 result = TRUE; |
|
934 break; |
|
935 case PHASE_2: |
|
936 err = asyncns_getaddrinfo_done (socket->asyncns_ctx, socket->resolv_query, &ans); |
|
937 socket->resolv_query = NULL; |
|
938 _lm_socket_create_phase2 (socket, (err) ? NULL : ans); |
|
939 _asyncns_done (socket); |
|
940 break; |
|
941 default: |
|
942 g_assert_not_reached(); |
|
943 break; |
|
944 } |
|
945 } |
|
946 |
|
947 lm_socket_unref(socket); |
|
948 |
|
949 return result; |
|
950 } |
|
951 |
|
952 #endif |
|
953 |
|
954 static void |
|
955 _lm_socket_create_phase1 (LmSocket *socket, |
|
956 unsigned char *srv_ans, |
|
957 int len) |
|
958 { |
|
959 const char *remote_addr; |
|
960 LmConnectData *data; |
|
961 struct addrinfo req; |
|
962 #ifndef HAVE_ASYNCNS |
|
963 struct addrinfo *ans; |
|
964 int err; |
|
965 #endif |
|
966 |
|
967 if (srv_ans != NULL) { |
|
968 gchar *new_server; |
|
969 guint new_port; |
|
970 gboolean result; |
|
971 result = socket_parse_srv_response (srv_ans, len, |
|
972 &new_server, |
|
973 &new_port); |
|
974 if (result == TRUE) { |
|
975 g_free (socket->server); |
|
976 socket->server = new_server; |
|
977 socket->port = new_port; |
|
978 } |
|
979 } |
|
980 |
|
981 /* If server wasn't specified and SRV failed, use domain */ |
|
982 if (!socket->server) { |
|
983 lm_verbose ("SRV lookup failed, trying jid domain\n"); |
|
984 socket->server = g_strdup (socket->domain); |
|
985 } |
|
986 |
|
987 if (socket->proxy) { |
|
988 remote_addr = lm_proxy_get_server (socket->proxy); |
|
989 } else { |
|
990 remote_addr = socket->server; |
|
991 } |
|
992 |
|
993 /*g_log (LM_LOG_DOMAIN, LM_LOG_LEVEL_NET, |
|
994 "Going to connect to %s%s:%u\n", (socket->proxy) ? "proxy " : "", |
|
995 remote_addr, socket->port);*/ |
|
996 lm_verbose( "[_lm_socket_create_phase1]: Going to connect to %s%s:%u\n", (socket->proxy) ? "proxy " : "", |
|
997 remote_addr, socket->port); |
|
998 |
|
999 data = g_new0 (LmConnectData, 1); |
|
1000 |
|
1001 data->socket = socket; |
|
1002 data->connection = socket->connection; |
|
1003 data->fd = -1; |
|
1004 socket->connect_data = data; |
|
1005 |
|
1006 memset (&req, 0, sizeof(req)); |
|
1007 req.ai_family = AF_UNSPEC; |
|
1008 req.ai_socktype = SOCK_STREAM; |
|
1009 req.ai_protocol = IPPROTO_TCP; |
|
1010 |
|
1011 #ifdef HAVE_ASYNCNS |
|
1012 if (!_asyncns_prep (socket, NULL)) |
|
1013 return; |
|
1014 |
|
1015 socket->resolv_query = |
|
1016 asyncns_getaddrinfo (socket->asyncns_ctx, |
|
1017 remote_addr, |
|
1018 NULL, |
|
1019 &req); |
|
1020 |
|
1021 asyncns_setuserdata (socket->asyncns_ctx, |
|
1022 socket->resolv_query, |
|
1023 (gpointer) PHASE_2); |
|
1024 #else |
|
1025 err = getaddrinfo (remote_addr, NULL, &req, &ans); |
|
1026 lm_verbose( "[_lm_socket_create_phase1]: after getaddrinfo : %u\n", err); |
|
1027 _lm_socket_create_phase2 (socket, (err) ? NULL : ans); |
|
1028 if (err != 0) { |
|
1029 return; |
|
1030 } |
|
1031 #endif |
|
1032 } |
|
1033 |
|
1034 static void |
|
1035 _lm_socket_create_phase2 (LmSocket *socket, struct addrinfo *ans) |
|
1036 { |
|
1037 if (ans == NULL) { |
|
1038 lm_verbose ("error while resolving, bailing out\n"); |
|
1039 if (socket->connect_func) { |
|
1040 (socket->connect_func) (socket, FALSE, socket->user_data); |
|
1041 } |
|
1042 g_free (socket->connect_data); |
|
1043 socket->connect_data = NULL; |
|
1044 return; |
|
1045 } |
|
1046 |
|
1047 socket->connect_data->resolved_addrs = ans; |
|
1048 socket->connect_data->current_addr = ans; |
|
1049 |
|
1050 socket_do_connect (socket->connect_data); |
|
1051 } |
|
1052 |
|
1053 LmSocket * |
|
1054 lm_socket_create (GMainContext *context, |
|
1055 IncomingDataFunc data_func, |
|
1056 SocketClosedFunc closed_func, |
|
1057 ConnectResultFunc connect_func, |
|
1058 gpointer user_data, |
|
1059 LmConnection *connection, |
|
1060 gboolean blocking, |
|
1061 const gchar *server, |
|
1062 const gchar *domain, |
|
1063 guint port, |
|
1064 LmSSL *ssl, |
|
1065 LmProxy *proxy, |
|
1066 GError **error) |
|
1067 { |
|
1068 LmSocket *socket; |
|
1069 |
|
1070 #ifndef HAVE_ASYNCNS |
|
1071 unsigned char srv_ans[SRV_LEN]; |
|
1072 int len; |
|
1073 #endif |
|
1074 lm_verbose ("[lm_socket_create]: inside.."); |
|
1075 |
|
1076 g_return_val_if_fail (domain != NULL, NULL); |
|
1077 g_return_val_if_fail ((port >= MIN_PORT && port <= MAX_PORT), NULL); |
|
1078 g_return_val_if_fail (data_func != NULL, NULL); |
|
1079 g_return_val_if_fail (closed_func != NULL, NULL); |
|
1080 g_return_val_if_fail (connect_func != NULL, NULL); |
|
1081 |
|
1082 |
|
1083 socket = g_new0 (LmSocket, 1); |
|
1084 lm_verbose ("[lm_socket_create]: after g_new0 "); |
|
1085 |
|
1086 socket->ref_count = 1; |
|
1087 |
|
1088 socket->connection = connection; |
|
1089 socket->domain = g_strdup (domain); |
|
1090 socket->server = g_strdup (server); |
|
1091 socket->port = port; |
|
1092 socket->cancel_open = FALSE; |
|
1093 socket->ssl = ssl; |
|
1094 socket->ssl_started = FALSE; |
|
1095 socket->proxy = NULL; |
|
1096 socket->blocking = blocking; |
|
1097 |
|
1098 if (context) { |
|
1099 socket->context = g_main_context_ref (context); |
|
1100 } |
|
1101 |
|
1102 if (proxy) { |
|
1103 socket->proxy = lm_proxy_ref (proxy); |
|
1104 } |
|
1105 |
|
1106 if (!server) { |
|
1107 /*char *srv; |
|
1108 srv = g_strdup_printf ("_xmpp-client._tcp.%s", socket->domain); |
|
1109 lm_verbose ("Performing a SRV lookup for %s\n", srv); |
|
1110 |
|
1111 #ifdef HAVE_ASYNCNS |
|
1112 if (!_asyncns_prep (socket, error)) |
|
1113 return NULL; |
|
1114 |
|
1115 socket->resolv_query = |
|
1116 asyncns_res_query (socket->asyncns_ctx, srv, C_IN, T_SRV); |
|
1117 asyncns_setuserdata (socket->asyncns_ctx, socket->resolv_query, (gpointer) PHASE_1); |
|
1118 #else |
|
1119 res_init (); |
|
1120 |
|
1121 len = res_query (srv, C_IN, T_SRV, srv_ans, SRV_LEN); |
|
1122 _lm_socket_create_phase1 (socket, (len < 1) ? NULL : srv_ans, len); |
|
1123 g_free (srv); |
|
1124 #endif*/ |
|
1125 } else { |
|
1126 lm_verbose ("SRV lookup disabled for %s\n", socket->server); |
|
1127 _lm_socket_create_phase1 (socket, NULL, 0); |
|
1128 } |
|
1129 |
|
1130 if (socket->connect_data == NULL) { |
|
1131 /* Open failed synchronously, probably a DNS lookup problem */ |
|
1132 lm_socket_unref(socket); |
|
1133 |
|
1134 g_set_error (error, |
|
1135 LM_ERROR, |
|
1136 LM_ERROR_CONNECTION_FAILED, |
|
1137 "Failed to resolve server"); |
|
1138 |
|
1139 return NULL; |
|
1140 } |
|
1141 |
|
1142 |
|
1143 /* If the connection fails synchronously, we don't want to call the |
|
1144 * connect_func to indicate an error, we return an error indication |
|
1145 * instead. So, we delay saving the functions until after we know |
|
1146 * we are going to return success. |
|
1147 */ |
|
1148 socket->data_func = data_func; |
|
1149 socket->closed_func = closed_func; |
|
1150 socket->connect_func = connect_func; |
|
1151 socket->user_data = user_data; |
|
1152 |
|
1153 return socket; |
|
1154 } |
|
1155 |
|
1156 void |
|
1157 lm_socket_flush (LmSocket *socket) |
|
1158 { |
|
1159 g_return_if_fail (socket != NULL); |
|
1160 g_return_if_fail (socket->io_channel != NULL); |
|
1161 |
|
1162 g_io_channel_flush (socket->io_channel, NULL); |
|
1163 } |
|
1164 |
|
1165 void |
|
1166 lm_socket_close (LmSocket *socket) |
|
1167 { |
|
1168 LmConnectData *data; |
|
1169 int ret = 0; |
|
1170 g_return_if_fail (socket != NULL); |
|
1171 |
|
1172 if (socket->watch_connect) { |
|
1173 g_source_destroy (socket->watch_connect); |
|
1174 socket->watch_connect = NULL; |
|
1175 } |
|
1176 |
|
1177 _lm_sock_close(socket->fd); |
|
1178 data = socket->connect_data; |
|
1179 ret = errno; lm_verbose("\n\n[lm_socket_close]: The errno after close fd is: %d",ret); |
|
1180 if (data) { |
|
1181 freeaddrinfo (data->resolved_addrs); |
|
1182 socket->connect_data = NULL; |
|
1183 g_free (data); |
|
1184 } |
|
1185 |
|
1186 if (socket->io_channel) { |
|
1187 if (socket->watch_in) { |
|
1188 g_source_destroy (socket->watch_in); |
|
1189 socket->watch_in = NULL; |
|
1190 } |
|
1191 |
|
1192 if (socket->watch_err) { |
|
1193 g_source_destroy (socket->watch_err); |
|
1194 socket->watch_err = NULL; |
|
1195 } |
|
1196 |
|
1197 if (socket->watch_hup) { |
|
1198 g_source_destroy (socket->watch_hup); |
|
1199 socket->watch_hup = NULL; |
|
1200 } |
|
1201 |
|
1202 if (socket->watch_out) { |
|
1203 g_source_destroy (socket->watch_out); |
|
1204 socket->watch_out = NULL; |
|
1205 } |
|
1206 |
|
1207 socket_close_io_channel (socket->io_channel); |
|
1208 |
|
1209 socket->io_channel = NULL; |
|
1210 socket->fd = -1; |
|
1211 } |
|
1212 } |
|
1213 |
|
1214 gchar * |
|
1215 lm_socket_get_local_host (LmSocket *socket) |
|
1216 { |
|
1217 return _lm_sock_get_local_host (socket->fd); |
|
1218 } |
|
1219 |
|
1220 LmSocket * |
|
1221 lm_socket_ref (LmSocket *socket) |
|
1222 { |
|
1223 g_return_val_if_fail (socket != NULL, NULL); |
|
1224 |
|
1225 socket->ref_count++; |
|
1226 |
|
1227 return socket; |
|
1228 } |
|
1229 |
|
1230 void |
|
1231 lm_socket_unref (LmSocket *socket) |
|
1232 { |
|
1233 g_return_if_fail (socket != NULL); |
|
1234 |
|
1235 socket->ref_count--; |
|
1236 |
|
1237 if (socket->ref_count <= 0) { |
|
1238 socket_free (socket); |
|
1239 } |
|
1240 } |
|
1241 |
|
1242 gboolean |
|
1243 lm_socket_set_keepalive (LmSocket *socket, int delay) |
|
1244 { |
|
1245 #ifdef USE_TCP_KEEPALIVES |
|
1246 return _lm_sock_set_keepalive (socket->fd, delay); |
|
1247 #else |
|
1248 return FALSE; |
|
1249 #endif /* USE_TCP_KEEPALIVES */ |
|
1250 } |
|
1251 |