Mercurial > masqmail
annotate src/online.c @ 281:ea5f86e0a81c
modes are now enforced exclusive
Other MTAs (exim, postfix) are more relaxing, but as combinations
of exclusive modes are senseless we behave more obvious if we
fail early. This makes understanding the behavior easier too.
| author | markus schnalke <meillo@marmaro.de> |
|---|---|
| date | Tue, 07 Dec 2010 14:04:56 -0300 |
| 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 } |