Mercurial > masqmail
annotate src/online.c @ 305:794071925a22
refactored complex conditions
| author | meillo@marmaro.de |
|---|---|
| date | Sun, 24 Apr 2011 15:10:11 +0200 |
| parents | 1aa107c6b1e5 |
| children | f10a56dc7481 |
| rev | line source |
|---|---|
| 0 | 1 /* MasqMail |
| 2 Copyright (C) 1999-2001 Oliver Kurth | |
| 279 | 3 Copyright (C) 2008, 2010 markus schnalke <meillo@marmaro.de> |
| 0 | 4 |
| 5 This program is free software; you can redistribute it and/or modify | |
| 6 it under the terms of the GNU General Public License as published by | |
| 7 the Free Software Foundation; either version 2 of the License, or | |
| 8 (at your option) any later version. | |
| 9 | |
| 10 This program is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 GNU General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU General Public License | |
| 16 along with this program; if not, write to the Free Software | |
| 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
| 18 */ | |
| 19 | |
| 20 #include <sys/stat.h> | |
| 21 #include <sys/wait.h> | |
| 15 | 22 |
| 0 | 23 #include "masqmail.h" |
| 24 #include "peopen.h" | |
| 25 | |
| 26 gchar *connection_name; | |
| 27 | |
|
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28 void |
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29 set_online_name(gchar * name) |
| 0 | 30 { |
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31 connection_name = g_strdup(name); |
| 0 | 32 } |
| 33 | |
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34 static gchar* |
| 279 | 35 detect_online_file(const gchar* file) |
| 36 { | |
| 37 struct stat st; | |
| 38 int err; | |
| 39 FILE *fptr; | |
| 40 char buf[256]; | |
| 41 | |
| 42 err = stat(conf.online_file, &st); | |
| 43 | |
| 44 if (err) { | |
| 45 if (errno==ENOENT) { | |
| 46 logwrite(LOG_NOTICE, "not online.\n"); | |
| 47 return NULL; | |
| 48 } | |
| 49 logwrite(LOG_ALERT, "stat of %s failed: %s\n", conf.online_file, strerror(errno)); | |
| 50 return NULL; | |
| 51 } | |
| 52 | |
| 53 fptr = fopen(conf.online_file, "r"); | |
| 54 if (!fptr) { | |
| 55 logwrite(LOG_ALERT, "opening of %s failed: %s\n", conf.online_file, strerror(errno)); | |
| 56 return NULL; | |
| 57 } | |
| 58 if (fgets(buf, 256, fptr) == NULL) { | |
| 59 logwrite(LOG_ALERT, "empty online file %s\n", conf.online_file); | |
| 60 fclose(fptr); | |
| 61 return NULL; | |
| 62 } | |
| 63 g_strstrip(buf); /* strip whitespace */ | |
| 64 fclose(fptr); | |
| 65 if (strlen(buf) == 0) { | |
| 66 logwrite(LOG_ALERT, "only whitespace connection name in %s\n", conf.online_file); | |
| 67 return NULL; | |
| 68 } | |
| 69 return g_strdup(buf); | |
| 70 } | |
| 71 | |
| 72 static gchar* | |
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73 detect_online_pipe(const gchar * pipe) |
| 0 | 74 { |
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75 pid_t pid; |
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76 void (*old_signal) (int); |
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77 int status; |
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78 FILE *in; |
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79 gchar *name = NULL; |
| 0 | 80 |
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81 old_signal = signal(SIGCHLD, SIG_DFL); |
| 0 | 82 |
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83 in = peopen(pipe, "r", environ, &pid); |
| 33 | 84 if (in == NULL) { |
| 85 logwrite(LOG_ALERT, "could not open pipe '%s': %s\n", pipe, strerror(errno)); | |
| 86 signal(SIGCHLD, old_signal); | |
| 87 return NULL; | |
| 88 } | |
| 89 | |
| 90 gchar output[256]; | |
| 91 if (fgets(output, 255, in)) { | |
| 92 g_strchomp(g_strchug(output)); | |
| 93 if (strlen(output) == 0) { | |
| 94 logwrite(LOG_ALERT, "only whitespace connection name\n"); | |
| 95 name = NULL; | |
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96 } else { |
| 33 | 97 name = g_strdup(output); |
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98 } |
| 33 | 99 } else { |
| 100 logwrite(LOG_ALERT, "nothing read from pipe %s\n", pipe); | |
| 101 name = NULL; | |
| 102 } | |
| 103 fclose(in); | |
| 104 waitpid(pid, &status, 0); | |
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105 if (WEXITSTATUS(status) != 0) { |
| 33 | 106 g_free(name); |
| 107 name = NULL; | |
| 108 } | |
| 0 | 109 |
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110 signal(SIGCHLD, old_signal); |
| 0 | 111 |
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112 return name; |
| 0 | 113 } |
| 114 | |
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115 gchar* |
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116 detect_online() |
| 0 | 117 { |
| 279 | 118 if (!conf.online_detect) { |
| 33 | 119 return NULL; |
| 120 } | |
| 121 | |
| 122 if (strcmp(conf.online_detect, "file") == 0) { | |
| 123 DEBUG(3) debugf("online detection method 'file'\n"); | |
| 279 | 124 if (!conf.online_file) { |
| 33 | 125 logwrite(LOG_ALERT, "online detection mode is 'file', but online_file is undefined\n"); |
| 126 return NULL; | |
| 127 } | |
| 279 | 128 return detect_online_file(conf.online_file); |
| 33 | 129 |
| 130 } else if (strcmp(conf.online_detect, "pipe") == 0) { | |
| 131 DEBUG(3) debugf("connection method 'pipe'\n"); | |
| 279 | 132 if (!conf.online_pipe) { |
| 33 | 133 logwrite(LOG_ALERT, "online detection mode is 'pipe', but online_pipe is undefined\n"); |
| 134 return NULL; | |
| 135 } | |
| 279 | 136 return detect_online_pipe(conf.online_pipe); |
| 137 | |
| 33 | 138 } else if (strcmp(conf.online_detect, "argument") == 0) { |
| 279 | 139 DEBUG(3) debugf("online route literally defined\n"); |
| 140 /* use the name set with set_online_name() */ | |
| 33 | 141 return connection_name; |
| 279 | 142 |
| 0 | 143 } |
| 33 | 144 |
| 279 | 145 DEBUG(3) debugf("unknown online detection method `%s'\n", conf.online_detect); |
| 0 | 146 return NULL; |
| 147 } |