masqmail

annotate src/online.c @ 23:4a3bc3a7afbe

find changesets by author, revision, files, or words in the commit message
refactoring: early exit instead of deep if levels
author meillo@marmaro.de
date Fri, 05 Dec 2008 11:32:26 +0100
parents 99c09ed776c1
children e1004fcc93c9
rev   line source
meillo@0 1 /* MasqMail
meillo@0 2 Copyright (C) 1999-2001 Oliver Kurth
meillo@19 3 Copyright 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 "mserver.h"
meillo@0 25 #include "peopen.h"
meillo@0 26
meillo@0 27 gchar *connection_name;
meillo@0 28
meillo@10 29 void
meillo@10 30 set_online_name(gchar * name)
meillo@0 31 {
meillo@10 32 connection_name = g_strdup(name);
meillo@0 33 }
meillo@0 34
meillo@10 35 static gchar*
meillo@10 36 detect_online_pipe(const gchar * pipe)
meillo@0 37 {
meillo@10 38 pid_t pid;
meillo@10 39 void (*old_signal) (int);
meillo@10 40 int status;
meillo@10 41 FILE *in;
meillo@10 42 gchar *name = NULL;
meillo@0 43
meillo@10 44 old_signal = signal(SIGCHLD, SIG_DFL);
meillo@0 45
meillo@10 46 in = peopen(pipe, "r", environ, &pid);
meillo@10 47 if (in != NULL) {
meillo@10 48 gchar output[256];
meillo@10 49 if (fgets(output, 255, in)) {
meillo@18 50 g_strchomp(g_strchug(output));
meillo@18 51 if (strlen(output) == 0) {
meillo@18 52 logwrite(LOG_ALERT, "only whitespace connection name\n");
meillo@18 53 name = NULL;
meillo@18 54 } else {
meillo@18 55 name = g_strdup(output);
meillo@18 56 }
meillo@18 57 } else {
meillo@18 58 logwrite(LOG_ALERT, "nothing read from pipe %s\n", pipe);
meillo@18 59 name = NULL;
meillo@10 60 }
meillo@10 61 fclose(in);
meillo@10 62 waitpid(pid, &status, 0);
meillo@10 63 if (WEXITSTATUS(status) != EXIT_SUCCESS) {
meillo@10 64 g_free(name);
meillo@10 65 name = NULL;
meillo@10 66 }
meillo@10 67 } else
meillo@10 68 logwrite(LOG_ALERT, "could not open pipe '%s': %s\n", pipe, strerror(errno));
meillo@0 69
meillo@10 70 signal(SIGCHLD, old_signal);
meillo@0 71
meillo@10 72 return name;
meillo@0 73 }
meillo@0 74
meillo@10 75 gchar*
meillo@10 76 detect_online()
meillo@0 77 {
meillo@10 78 if (conf.online_detect != NULL) {
meillo@10 79 if (strcmp(conf.online_detect, "file") == 0) {
meillo@10 80 DEBUG(3) debugf("online detection method 'file'\n");
meillo@10 81 if (conf.online_file != NULL) {
meillo@10 82 struct stat st;
meillo@10 83 if (stat(conf.online_file, &st) == 0) {
meillo@10 84 FILE *fptr = fopen(conf.online_file, "r");
meillo@10 85 if (fptr) {
meillo@10 86 char buf[256];
meillo@18 87 if (fgets(buf, 256, fptr) == NULL) {
meillo@18 88 logwrite(LOG_ALERT, "empty online file %s\n", conf.online_file);
meillo@18 89 fclose(fptr);
meillo@18 90 return NULL;
meillo@18 91 }
meillo@18 92 g_strchomp(g_strchug(buf));
meillo@10 93 fclose(fptr);
meillo@18 94 if (strlen(buf) == 0) {
meillo@18 95 logwrite(LOG_ALERT, "only whitespace connection name in %s\n", conf.online_file);
meillo@18 96 return NULL;
meillo@18 97 }
meillo@10 98 return g_strdup(buf);
meillo@10 99 } else {
meillo@10 100 logwrite(LOG_ALERT, "opening of %s failed: %s\n", conf.online_file, strerror(errno));
meillo@10 101 return NULL;
meillo@10 102 }
meillo@10 103 } else if (errno == ENOENT) {
meillo@10 104 logwrite(LOG_NOTICE, "not online.\n");
meillo@10 105 return NULL;
meillo@10 106 } else {
meillo@10 107 logwrite(LOG_ALERT, "stat of %s failed: %s", conf.online_file, strerror(errno));
meillo@10 108 return NULL;
meillo@10 109 }
meillo@10 110 } else
meillo@10 111 logwrite(LOG_ALERT, "online detection mode is 'file', but online_file is undefined\n");
meillo@10 112 #ifdef ENABLE_MSERVER
meillo@10 113 } else if (strcmp(conf.online_detect, "mserver") == 0) {
meillo@10 114 DEBUG(3) debugf("connection method 'mserver'\n");
meillo@10 115 return mserver_detect_online(conf.mserver_iface);
meillo@10 116 #endif
meillo@10 117 } else if (strcmp(conf.online_detect, "pipe") == 0) {
meillo@10 118 DEBUG(3) debugf("connection method 'pipe'\n");
meillo@10 119 if (conf.online_pipe)
meillo@10 120 return detect_online_pipe(conf.online_pipe);
meillo@10 121 else {
meillo@10 122 logwrite(LOG_ALERT, "online detection mode is 'pipe', but online_pipe is undefined\n");
meillo@10 123 return NULL;
meillo@10 124 }
meillo@10 125 } else if (strcmp(conf.online_detect, "argument") == 0) {
meillo@10 126 return connection_name;
meillo@10 127 } else {
meillo@10 128 DEBUG(3) debugf("no connection method selected\n");
meillo@10 129 }
meillo@0 130 }
meillo@0 131 return NULL;
meillo@0 132 }