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annotate mcabber/mcabber/fifo.c @ 1909:9c14153e2580

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Do not display unhandled IQ result messages to the log window We display the message only in the debug log file, because these messages are usually ignored anyway (ideally we would create a handler explicitly when sending the initial IQ request). Thanks to VarLog for the report!
author Mikael Berthe <mikael@lilotux.net>
date Sun, 18 Apr 2010 14:14:05 +0200
parents e6d355e50d7a
children ee8657ff9aa8
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1 /*
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2 * fifo.c -- Read commands from a named pipe
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3 *
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4 * Copyright (C) 2008,2009 Mikael Berthe <mikael@lilotux.net>
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5 * Copyrigth (C) 2009 Myhailo Danylenko <isbear@ukrpost.net>
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6 *
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7 * This program is free software; you can redistribute it and/or modify
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8 * it under the terms of the GNU General Public License as published by
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9 * the Free Software Foundation; either version 2 of the License, or (at
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10 * 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, but
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13 * 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 * 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 General Public License
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18 * along with this program; if not, write to the Free Software
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19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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20 * USA
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21 */
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22
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23 #include <stdlib.h>
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24 #include <glib.h>
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25 #include <sys/types.h>
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26 #include <sys/stat.h>
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27 #include <fcntl.h>
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28 #include <unistd.h>
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29 #include <errno.h>
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30 #include <fcntl.h>
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31
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32 #include "commands.h"
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33 #include "logprint.h"
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34 #include "utils.h"
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35 #include "settings.h"
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36 #include "main.h"
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37
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38 static char *fifo_name = NULL;
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39 static GIOChannel *fifo_channel = NULL;
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40
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41 static const char *FIFO_ENV_NAME = "MCABBER_FIFO";
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42
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43 static gboolean attach_fifo(const char *name);
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44
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45 static guint fifo_callback(GIOChannel *channel,
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46 GIOCondition condition,
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47 gpointer data)
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48 {
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49 if (condition & (G_IO_IN|G_IO_PRI)) {
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50 GIOStatus chstat;
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51 gchar *buf;
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52 gsize endpos;
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53
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54 chstat = g_io_channel_read_line(channel, &buf, NULL, &endpos, NULL);
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55 if (chstat == G_IO_STATUS_ERROR || chstat == G_IO_STATUS_EOF) {
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56 if (!attach_fifo(fifo_name))
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57 scr_LogPrint(LPRINT_LOGNORM,
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58 "Reopening fifo failed! Fifo will not work from now!");
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59 return FALSE;
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60 }
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61 if (buf) {
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62 guint logflag;
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63 guint fifo_ignore = settings_opt_get_int("fifo_ignore");
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64
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65 if (endpos)
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66 buf[endpos] = '\0';
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67
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68 if (settings_opt_get_int("fifo_hide_commands"))
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69 logflag = LPRINT_LOG;
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70 else
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71 logflag = LPRINT_LOGNORM;
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72 scr_LogPrint(logflag, "%s FIFO command: %s",
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73 (fifo_ignore ? "Ignoring" : "Executing"), buf);
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74 if (!fifo_ignore) {
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75 if (process_command(buf, TRUE) == 255)
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76 mcabber_set_terminate_ui();
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77 }
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78
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79 g_free(buf);
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80 }
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81 } else if (condition & (G_IO_ERR|G_IO_NVAL|G_IO_HUP)) {
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82 if (!attach_fifo(fifo_name))
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83 scr_LogPrint(LPRINT_LOGNORM,
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84 "Reopening fifo failed! Fifo will not work from now!");
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85 return FALSE;
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86 }
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87 return TRUE;
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88 }
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89
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90 static void fifo_destroy_callback(gpointer data)
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91 {
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92 GIOChannel *channel = (GIOChannel *)data;
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93 g_io_channel_unref(channel);
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94 }
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95
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96 static gboolean check_fifo(const char *name)
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97 {
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98 struct stat finfo;
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99 if (stat(name, &finfo) == -1) {
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100 /* some unknown error */
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101 if (errno != ENOENT)
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102 return FALSE;
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103 /* fifo not yet exists */
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104 if (mkfifo(name, S_IRUSR|S_IWUSR) != -1)
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105 return check_fifo(name);
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106 else
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107 return FALSE;
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108 }
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109
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110 /* file exists */
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111 if (S_ISFIFO(finfo.st_mode))
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112 return TRUE;
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113 else
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114 return FALSE;
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115 }
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116
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117 static gboolean attach_fifo(const char *name)
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118 {
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119 GSource *source;
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120 int fd = open (name, O_RDONLY|O_NONBLOCK);
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121 if (fd == -1)
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122 return FALSE;
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123
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124 fifo_channel = g_io_channel_unix_new(fd);
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125
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126 g_io_channel_set_flags(fifo_channel, G_IO_FLAG_NONBLOCK, NULL);
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127 g_io_channel_set_encoding(fifo_channel, NULL, NULL);
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128 g_io_channel_set_close_on_unref(fifo_channel, TRUE);
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129
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130 source = g_io_create_watch(fifo_channel,
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131 G_IO_IN|G_IO_PRI|G_IO_ERR|G_IO_HUP|G_IO_NVAL);
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132 g_source_set_callback(source, (GSourceFunc)fifo_callback,
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133 (gpointer)fifo_channel,
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134 (GDestroyNotify)fifo_destroy_callback);
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135 g_source_attach(source, main_context);
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136
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137 return TRUE;
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138 }
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139
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140 int fifo_init(const char *fifo_path)
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141 {
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142 if (fifo_path) {
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143 fifo_name = expand_filename(fifo_path);
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144
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145 if (!check_fifo(fifo_name)) {
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146 scr_LogPrint(LPRINT_LOGNORM, "WARNING: Cannot create the FIFO. "
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147 "%s already exists and is not a pipe", fifo_name);
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148 g_free(fifo_name);
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149 return -1;
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150 }
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151 } else if (fifo_name)
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152 g_source_remove_by_user_data(fifo_channel);
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153 else
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154 return -1;
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155
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156 if (!attach_fifo(fifo_name)) {
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157 scr_LogPrint(LPRINT_LOGNORM, "Error: Cannot open fifo");
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158 return -1;
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159 }
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160
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161 setenv(FIFO_ENV_NAME, fifo_name, 1);
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162
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163 scr_LogPrint(LPRINT_LOGNORM, "FIFO initialized (%s)", fifo_path);
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164 return 1;
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165 }
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166
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167 void fifo_deinit(void)
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168 {
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169 unsetenv(FIFO_ENV_NAME);
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170
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171 /* destroy open fifo */
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172 unlink(fifo_name);
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173 g_source_remove_by_user_data(fifo_channel);
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174 /* channel itself should be destroyed by destruction callback */
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175 g_free(fifo_name);
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176 }
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177
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178 /* vim: set expandtab cindent cinoptions=>2\:2(0 sw=2 ts=2: For Vim users... */