masqmail

annotate src/online.c @ 239:31ee44f45787

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refactored alias.c heavily especially substituted the loop-based alias_expand() with a recursive approach. Now alias_expand() wraps alias_one() which recursively expands aliases. In principle the ``data processing'' is the same but now it's clearer structured and thus easier to understand IMO. The loop might have been faster but I don't care for speed -- the most simple solution is the best. It's fast enough, that is sufficient.
author markus schnalke <meillo@marmaro.de>
date Mon, 25 Oct 2010 15:35:28 -0300
parents 5b621742b2e7
children fc1c6425c024
rev   line source
meillo@0 1 /* MasqMail
meillo@0 2 Copyright (C) 1999-2001 Oliver Kurth
meillo@76 3 Copyright (C) 2008 markus schnalke <meillo@marmaro.de>
meillo@0 4
meillo@0 5 This program is free software; you can redistribute it and/or modify
meillo@0 6 it under the terms of the GNU General Public License as published by
meillo@0 7 the Free Software Foundation; either version 2 of the License, or
meillo@0 8 (at your option) any later version.
meillo@0 9
meillo@0 10 This program is distributed in the hope that it will be useful,
meillo@0 11 but WITHOUT ANY WARRANTY; without even the implied warranty of
meillo@0 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
meillo@0 13 GNU General Public License for more details.
meillo@0 14
meillo@0 15 You should have received a copy of the GNU General Public License
meillo@0 16 along with this program; if not, write to the Free Software
meillo@0 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
meillo@0 18 */
meillo@0 19
meillo@0 20 #include <sys/stat.h>
meillo@0 21 #include <sys/wait.h>
meillo@15 22
meillo@0 23 #include "masqmail.h"
meillo@0 24 #include "peopen.h"
meillo@0 25
meillo@0 26 gchar *connection_name;
meillo@0 27
meillo@10 28 void
meillo@10 29 set_online_name(gchar * name)
meillo@0 30 {
meillo@10 31 connection_name = g_strdup(name);
meillo@0 32 }
meillo@0 33
meillo@10 34 static gchar*
meillo@10 35 detect_online_pipe(const gchar * pipe)
meillo@0 36 {
meillo@10 37 pid_t pid;
meillo@10 38 void (*old_signal) (int);
meillo@10 39 int status;
meillo@10 40 FILE *in;
meillo@10 41 gchar *name = NULL;
meillo@0 42
meillo@10 43 old_signal = signal(SIGCHLD, SIG_DFL);
meillo@0 44
meillo@10 45 in = peopen(pipe, "r", environ, &pid);
meillo@33 46 if (in == NULL) {
meillo@33 47 logwrite(LOG_ALERT, "could not open pipe '%s': %s\n", pipe, strerror(errno));
meillo@33 48 signal(SIGCHLD, old_signal);
meillo@33 49 return NULL;
meillo@33 50 }
meillo@33 51
meillo@33 52 gchar output[256];
meillo@33 53 if (fgets(output, 255, in)) {
meillo@33 54 g_strchomp(g_strchug(output));
meillo@33 55 if (strlen(output) == 0) {
meillo@33 56 logwrite(LOG_ALERT, "only whitespace connection name\n");
meillo@33 57 name = NULL;
meillo@18 58 } else {
meillo@33 59 name = g_strdup(output);
meillo@10 60 }
meillo@33 61 } else {
meillo@33 62 logwrite(LOG_ALERT, "nothing read from pipe %s\n", pipe);
meillo@33 63 name = NULL;
meillo@33 64 }
meillo@33 65 fclose(in);
meillo@33 66 waitpid(pid, &status, 0);
meillo@33 67 if (WEXITSTATUS(status) != EXIT_SUCCESS) {
meillo@33 68 g_free(name);
meillo@33 69 name = NULL;
meillo@33 70 }
meillo@0 71
meillo@10 72 signal(SIGCHLD, old_signal);
meillo@0 73
meillo@10 74 return name;
meillo@0 75 }
meillo@0 76
meillo@10 77 gchar*
meillo@10 78 detect_online()
meillo@0 79 {
meillo@33 80 if (conf.online_detect == NULL) {
meillo@33 81 return NULL;
meillo@33 82 }
meillo@33 83
meillo@33 84 if (strcmp(conf.online_detect, "file") == 0) {
meillo@33 85 DEBUG(3) debugf("online detection method 'file'\n");
meillo@51 86 if (conf.online_file == NULL) {
meillo@33 87 logwrite(LOG_ALERT, "online detection mode is 'file', but online_file is undefined\n");
meillo@33 88 return NULL;
meillo@33 89 }
meillo@33 90
meillo@33 91 struct stat st;
meillo@33 92 if (stat(conf.online_file, &st) == 0) {
meillo@33 93 FILE *fptr = fopen(conf.online_file, "r");
meillo@33 94 if (!fptr) {
meillo@33 95 logwrite(LOG_ALERT, "opening of %s failed: %s\n", conf.online_file, strerror(errno));
meillo@10 96 return NULL;
meillo@10 97 }
meillo@33 98 char buf[256];
meillo@33 99 if (fgets(buf, 256, fptr) == NULL) {
meillo@33 100 logwrite(LOG_ALERT, "empty online file %s\n", conf.online_file);
meillo@33 101 fclose(fptr);
meillo@33 102 return NULL;
meillo@33 103 }
meillo@33 104 g_strchomp(g_strchug(buf));
meillo@33 105 fclose(fptr);
meillo@33 106 if (strlen(buf) == 0) {
meillo@33 107 logwrite(LOG_ALERT, "only whitespace connection name in %s\n", conf.online_file);
meillo@33 108 return NULL;
meillo@33 109 }
meillo@33 110 return g_strdup(buf);
meillo@33 111 } else if (errno == ENOENT) {
meillo@33 112 logwrite(LOG_NOTICE, "not online.\n");
meillo@33 113 return NULL;
meillo@10 114 } else {
meillo@208 115 logwrite(LOG_ALERT, "stat of %s failed: %s\n", conf.online_file, strerror(errno));
meillo@33 116 return NULL;
meillo@10 117 }
meillo@33 118
meillo@33 119 } else if (strcmp(conf.online_detect, "pipe") == 0) {
meillo@33 120 DEBUG(3) debugf("connection method 'pipe'\n");
meillo@33 121 if (conf.online_pipe)
meillo@33 122 return detect_online_pipe(conf.online_pipe);
meillo@33 123 else {
meillo@33 124 logwrite(LOG_ALERT, "online detection mode is 'pipe', but online_pipe is undefined\n");
meillo@33 125 return NULL;
meillo@33 126 }
meillo@33 127 } else if (strcmp(conf.online_detect, "argument") == 0) {
meillo@33 128 return connection_name;
meillo@33 129 } else {
meillo@33 130 DEBUG(3) debugf("no connection method selected\n");
meillo@0 131 }
meillo@33 132
meillo@0 133 return NULL;
meillo@0 134 }