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1 /* MasqMail
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2 Copyright (C) 1999-2001 Oliver Kurth
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3
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4 This program is free software; you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 2 of the License, or
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7 (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program; if not, write to the Free Software
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16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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17 */
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18
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19 #include <sys/stat.h>
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20 #include <sys/wait.h>
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21 #include "masqmail.h"
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22 #include "mserver.h"
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23 #include "peopen.h"
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24
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25 gchar *connection_name;
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26
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27 void set_online_name(gchar *name)
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28 {
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29 connection_name = g_strdup(name);
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30 }
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31
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32 static
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33 gchar *detect_online_pipe(const gchar *pipe)
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34 {
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35 pid_t pid;
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36 void (*old_signal)(int);
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37 int status;
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38 FILE *in;
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39 gchar *name = NULL;
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40
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41 old_signal = signal(SIGCHLD, SIG_DFL);
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42
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43 in = peopen(pipe, "r", environ, &pid);
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44 if(in != NULL){
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45 gchar output[256];
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46 if(fgets(output, 255, in)){
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47 g_strchomp(output);
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48 name = g_strdup(output);
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49 }
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50 fclose(in);
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51 waitpid(pid, &status, 0);
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52 if(WEXITSTATUS(status) != EXIT_SUCCESS){
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53 g_free(name);
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54 name = NULL;
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55 }
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56 }else
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57 logwrite(LOG_ALERT, "could not open pipe '%s': %s\n", pipe, strerror(errno));
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58
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59 signal(SIGCHLD, old_signal);
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60
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61 return name;
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62 }
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63
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64 gchar *detect_online()
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65 {
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66 if(conf.online_detect != NULL){
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67 if(strcmp(conf.online_detect, "file") == 0){
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68 DEBUG(3) debugf("online detection method 'file'\n");
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69 if(conf.online_file != NULL){
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70 struct stat st;
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71 if(stat(conf.online_file, &st) == 0){
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72 FILE *fptr = fopen(conf.online_file, "r");
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73 if(fptr){
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74 char buf[256];
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75 fgets(buf, 256, fptr);
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76 g_strchomp(buf);
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77 fclose(fptr);
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78 return g_strdup(buf);
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79 }else{
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80 logwrite(LOG_ALERT, "opening of %s failed: %s\n",
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81 conf.online_file, strerror(errno));
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82 return NULL;
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83 }
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84 }
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85 else if(errno == ENOENT){
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86 logwrite(LOG_NOTICE, "not online.\n");
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87 return NULL;
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88 }else{
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89 logwrite(LOG_ALERT, "stat of %s failed: %s",
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90 conf.online_file, strerror(errno));
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91 return NULL;
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92 }
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93 }else
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94 logwrite(LOG_ALERT,
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95 "online detection mode is 'file', "
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96 "but online_file is undefined\n");
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97 #ifdef ENABLE_MSERVER
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98 }else if(strcmp(conf.online_detect, "mserver") == 0){
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99 DEBUG(3) debugf("connection method 'mserver'\n");
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100 return mserver_detect_online(conf.mserver_iface);
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101 #endif
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102 }else if(strcmp(conf.online_detect, "pipe") == 0){
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103 DEBUG(3) debugf("connection method 'pipe'\n");
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104 if(conf.online_pipe)
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105 return detect_online_pipe(conf.online_pipe);
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106 else{
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107 logwrite(LOG_ALERT,
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108 "online detection mode is 'pipe', "
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109 "but online_pipe is undefined\n");
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110 return NULL;
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111 }
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112 }else if(strcmp(conf.online_detect, "argument") == 0){
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113 return connection_name;
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114 }else{
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115 DEBUG(3) debugf("no connection method selected\n");
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116 }
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117 }
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118 return NULL;
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119 }
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