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annotate src/online.c @ 15:f671821d8222

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code beautifying; 0 -> \0 if appropriate
author meillo@marmaro.de
date Thu, 06 Nov 2008 09:18:38 +0100
parents 26e34ae9a3e3
children 99c09ed776c1
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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
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22 #include "masqmail.h"
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23 #include "mserver.h"
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24 #include "peopen.h"
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25
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26 gchar *connection_name;
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27
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28 void
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29 set_online_name(gchar * name)
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30 {
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31 connection_name = g_strdup(name);
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32 }
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33
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34 static gchar*
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35 detect_online_pipe(const gchar * pipe)
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36 {
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37 pid_t pid;
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38 void (*old_signal) (int);
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39 int status;
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40 FILE *in;
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41 gchar *name = NULL;
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42
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43 old_signal = signal(SIGCHLD, SIG_DFL);
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44
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45 in = peopen(pipe, "r", environ, &pid);
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46 if (in != NULL) {
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47 gchar output[256];
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48 if (fgets(output, 255, in)) {
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49 g_strchomp(output);
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50 name = g_strdup(output);
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51 }
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52 fclose(in);
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53 waitpid(pid, &status, 0);
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54 if (WEXITSTATUS(status) != EXIT_SUCCESS) {
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55 g_free(name);
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56 name = NULL;
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57 }
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58 } else
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59 logwrite(LOG_ALERT, "could not open pipe '%s': %s\n", pipe, strerror(errno));
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61 signal(SIGCHLD, old_signal);
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62
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63 return name;
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64 }
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65
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66 gchar*
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67 detect_online()
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68 {
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69 if (conf.online_detect != NULL) {
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70 if (strcmp(conf.online_detect, "file") == 0) {
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71 DEBUG(3) debugf("online detection method 'file'\n");
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72 if (conf.online_file != NULL) {
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73 struct stat st;
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74 if (stat(conf.online_file, &st) == 0) {
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75 FILE *fptr = fopen(conf.online_file, "r");
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76 if (fptr) {
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77 char buf[256];
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78 fgets(buf, 256, fptr);
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79 g_strchomp(buf);
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80 fclose(fptr);
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81 return g_strdup(buf);
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82 } else {
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83 logwrite(LOG_ALERT, "opening of %s failed: %s\n", conf.online_file, strerror(errno));
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84 return NULL;
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85 }
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86 } else if (errno == ENOENT) {
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87 logwrite(LOG_NOTICE, "not online.\n");
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88 return NULL;
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89 } else {
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90 logwrite(LOG_ALERT, "stat of %s failed: %s", 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, "online detection mode is 'file', but online_file is undefined\n");
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95 #ifdef ENABLE_MSERVER
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96 } else if (strcmp(conf.online_detect, "mserver") == 0) {
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97 DEBUG(3) debugf("connection method 'mserver'\n");
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98 return mserver_detect_online(conf.mserver_iface);
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99 #endif
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100 } else if (strcmp(conf.online_detect, "pipe") == 0) {
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101 DEBUG(3) debugf("connection method 'pipe'\n");
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102 if (conf.online_pipe)
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103 return detect_online_pipe(conf.online_pipe);
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104 else {
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105 logwrite(LOG_ALERT, "online detection mode is 'pipe', but online_pipe is undefined\n");
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106 return NULL;
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107 }
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108 } else if (strcmp(conf.online_detect, "argument") == 0) {
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109 return connection_name;
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110 } else {
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111 DEBUG(3) debugf("no connection method selected\n");
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112 }
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113 }
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114 return NULL;
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115 }