rev |
line source |
meillo@0
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1 /* MasqMail
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meillo@0
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2 Copyright (C) 1999-2001 Oliver Kurth
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meillo@76
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3 Copyright (C) 2010 markus schnalke <meillo@marmaro.de>
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meillo@0
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4
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5 This program is free software; you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 2 of the License, or
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8 (at your option) any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, write to the Free Software
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17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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18 */
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19
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20 #include <stdio.h>
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21 #include <errno.h>
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meillo@0
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22 #include <stdlib.h>
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meillo@0
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23 #include <string.h>
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meillo@0
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24 #include <unistd.h>
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meillo@0
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25 #include <sys/types.h>
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meillo@0
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26 #include <sys/socket.h>
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27 #include <sys/time.h>
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28 #include <netinet/in.h>
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29 #include <netdb.h>
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30 #include <syslog.h>
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meillo@0
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31 #include <signal.h>
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32
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33 #include <glib.h>
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34
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35 #include "masqmail.h"
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36
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37 /* mutually exclusive modes. Note that there is no 'queue daemon' mode.
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38 It, as well as the distinction beween the two (non exclusive) daemon
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meillo@192
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39 (queue and listen) modes, is handled by flags.*/
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meillo@10
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40 typedef enum _mta_mode {
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41 MODE_ACCEPT = 0, /* accept message on stdin */
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meillo@10
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42 MODE_DAEMON, /* run as daemon */
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43 MODE_RUNQUEUE, /* single queue run, online or offline */
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44 MODE_SMTP, /* accept SMTP on stdin */
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45 MODE_LIST, /* list queue */
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meillo@10
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46 MODE_MCMD, /* do queue manipulation */
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meillo@10
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47 MODE_VERSION, /* show version */
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meillo@10
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48 MODE_BI, /* fake ;-) */
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meillo@10
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49 MODE_NONE /* to prevent default MODE_ACCEPT */
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meillo@10
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50 } mta_mode;
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51
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52 char *pidfile = NULL;
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meillo@0
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53 volatile int sigterm_in_progress = 0;
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54
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55 static void
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56 sigterm_handler(int sig)
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57 {
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58 if (sigterm_in_progress)
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59 raise(sig);
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60 sigterm_in_progress = 1;
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61
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62 if (pidfile) {
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63 uid_t uid;
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meillo@10
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64 uid = seteuid(0);
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meillo@10
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65 if (unlink(pidfile) != 0)
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66 logwrite(LOG_WARNING, "could not delete pid file %s: %s\n", pidfile, strerror(errno));
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meillo@10
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67 seteuid(uid); /* we exit anyway after this, just to be sure */
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68 }
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69
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70 signal(sig, SIG_DFL);
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71 raise(sig);
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meillo@0
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72 }
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73
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meillo@10
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74 #ifdef ENABLE_IDENT /* so far used for that only */
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75 static gboolean
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76 is_in_netlist(gchar * host, GList * netlist)
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77 {
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78 guint hostip = inet_addr(host);
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79 struct in_addr addr;
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80
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81 addr.s_addr = hostip;
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82 if (addr.s_addr != INADDR_NONE) {
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83 GList *node;
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84 foreach(netlist, node) {
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85 struct in_addr *net = (struct in_addr *) (node->data);
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meillo@10
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86 if ((addr.s_addr & net->s_addr) == net->s_addr)
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87 return TRUE;
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88 }
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89 }
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90 return FALSE;
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91 }
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92 #endif
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93
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94 gchar*
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95 get_optarg(char *argv[], gint argc, gint * argp, gint * pos)
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96 {
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97 if (argv[*argp][*pos])
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98 return &(argv[*argp][*pos]);
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99 else {
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100 if (*argp + 1 < argc) {
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101 if (argv[(*argp) + 1][0] != '-') {
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102 (*argp)++;
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103 *pos = 0;
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104 return &(argv[*argp][*pos]);
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105 }
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meillo@10
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106 }
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meillo@10
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107 }
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108 return NULL;
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109 }
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110
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111 gchar*
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112 get_progname(gchar * arg0)
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113 {
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114 gchar *p = arg0 + strlen(arg0) - 1;
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115 while (p > arg0) {
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116 if (*p == '/')
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117 return p + 1;
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118 p--;
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119 }
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120 return p;
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121 }
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122
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123 gboolean
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124 write_pidfile(gchar * name)
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125 {
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126 FILE *fptr;
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127
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128 if ((fptr = fopen(name, "wt"))) {
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129 fprintf(fptr, "%d\n", getpid());
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130 fclose(fptr);
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131 pidfile = strdup(name);
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132 return TRUE;
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133 }
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134 logwrite(LOG_WARNING, "could not write pid file: %s\n", strerror(errno));
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135 return FALSE;
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136 }
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137
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meillo@10
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138 static void
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139 mode_daemon(gboolean do_listen, gint queue_interval, char *argv[])
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140 {
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meillo@10
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141 guint pid;
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142
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143 /* daemon */
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144 if (!conf.run_as_user) {
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145 if ((conf.orig_uid != 0) && (conf.orig_uid != conf.mail_uid)) {
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146 fprintf(stderr, "must be root or %s for daemon.\n", DEF_MAIL_USER);
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147 exit(EXIT_FAILURE);
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148 }
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149 }
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150
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meillo@74
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151 /* reparent to init only if init is not already the parent */
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meillo@74
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152 if (getppid() != 1) {
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meillo@74
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153 if ((pid = fork()) > 0) {
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meillo@74
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154 exit(EXIT_SUCCESS);
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meillo@74
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155 } else if (pid < 0) {
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156 logwrite(LOG_ALERT, "could not fork!");
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157 exit(EXIT_FAILURE);
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meillo@74
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158 }
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meillo@10
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159 }
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160
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161 signal(SIGTERM, sigterm_handler);
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162 write_pidfile(PIDFILEDIR "/masqmail.pid");
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163
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164 conf.do_verbose = FALSE;
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165
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166 /* closing and reopening the log ensures that it is open afterwards
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167 because it is possible that the log is assigned to fd 1 and gets
|
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168 thus closes by fclose(stdout). Similar for the debugfile.
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169 */
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170 logclose();
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meillo@10
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171 fclose(stdin);
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172 fclose(stdout);
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173 fclose(stderr);
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meillo@72
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174 logopen();
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175
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176 logwrite(LOG_NOTICE, "%s %s daemon starting", PACKAGE, VERSION);
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177 listen_port(do_listen ? conf.listen_addresses : NULL, queue_interval, argv);
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178 }
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179
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meillo@10
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180 static void
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meillo@10
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181 mode_smtp()
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182 {
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183 /* accept smtp message on stdin */
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meillo@10
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184 /* write responses to stderr. */
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185
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186 struct sockaddr_in saddr;
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187 gchar *peername = NULL;
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188 int dummy = sizeof(saddr);
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189
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190 conf.do_verbose = FALSE;
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191
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192 if (!conf.run_as_user) {
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193 seteuid(conf.orig_uid);
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194 setegid(conf.orig_gid);
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195 }
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meillo@0
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196
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197 DEBUG(5) debugf("accepting smtp message on stdin\n");
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198
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199 if (getpeername(0, (struct sockaddr *) (&saddr), &dummy) == 0) {
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meillo@10
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200 peername = g_strdup(inet_ntoa(saddr.sin_addr));
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meillo@10
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201 } else if (errno != ENOTSOCK)
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202 exit(EXIT_FAILURE);
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meillo@0
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203
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meillo@10
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204 smtp_in(stdin, stderr, peername, NULL);
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205 }
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206
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meillo@10
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207 static void
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meillo@10
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208 mode_accept(address * return_path, gchar * full_sender_name, guint accept_flags, char **addresses, int addr_cnt)
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meillo@0
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209 {
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meillo@10
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210 /* accept message on stdin */
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meillo@10
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211 accept_error err;
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meillo@10
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212 message *msg = create_message();
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meillo@10
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213 gint i;
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meillo@0
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214
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meillo@83
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215 if (return_path && !is_privileged_user(conf.orig_uid)) {
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meillo@96
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216 fprintf(stderr, "must be root, %s or in group %s for setting return path.\n", DEF_MAIL_USER, DEF_MAIL_GROUP);
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meillo@83
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217 exit(EXIT_FAILURE);
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meillo@10
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218 }
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meillo@0
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219
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meillo@10
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220 if (!conf.run_as_user) {
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meillo@10
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221 seteuid(conf.orig_uid);
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meillo@10
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222 setegid(conf.orig_gid);
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meillo@10
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223 }
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meillo@0
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224
|
meillo@10
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225 DEBUG(5) debugf("accepting message on stdin\n");
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meillo@0
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226
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meillo@10
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227 msg->received_prot = PROT_LOCAL;
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meillo@10
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228 for (i = 0; i < addr_cnt; i++) {
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meillo@10
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229 if (addresses[i][0] != '|')
|
meillo@10
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230 msg->rcpt_list = g_list_append(msg->rcpt_list, create_address_qualified(addresses[i], TRUE, conf.host_name));
|
meillo@10
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231 else {
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meillo@10
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232 logwrite(LOG_ALERT, "no pipe allowed as recipient address: %s\n", addresses[i]);
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meillo@10
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233 exit(EXIT_FAILURE);
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meillo@10
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234 }
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meillo@10
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235 }
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meillo@0
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236
|
meillo@10
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237 /* -f option */
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meillo@10
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238 msg->return_path = return_path;
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meillo@0
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239
|
meillo@10
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240 /* -F option */
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meillo@10
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241 msg->full_sender_name = full_sender_name;
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meillo@0
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242
|
meillo@10
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243 if ((err = accept_message(stdin, msg, accept_flags)) == AERR_OK) {
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meillo@10
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244 if (spool_write(msg, TRUE)) {
|
meillo@10
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245 pid_t pid;
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meillo@10
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246 logwrite(LOG_NOTICE, "%s <= %s with %s\n", msg->uid, addr_string(msg->return_path), prot_names[PROT_LOCAL]);
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meillo@0
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247
|
meillo@10
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248 if (!conf.do_queue) {
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meillo@10
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249 if ((pid = fork()) == 0) {
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meillo@10
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250 conf.do_verbose = FALSE;
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meillo@10
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251 fclose(stdin);
|
meillo@10
|
252 fclose(stdout);
|
meillo@10
|
253 fclose(stderr);
|
meillo@10
|
254 if (deliver(msg)) {
|
meillo@10
|
255 exit(EXIT_SUCCESS);
|
meillo@10
|
256 } else
|
meillo@10
|
257 exit(EXIT_FAILURE);
|
meillo@10
|
258 } else if (pid < 0) {
|
meillo@10
|
259 logwrite(LOG_ALERT, "could not fork for delivery, id = %s", msg->uid);
|
meillo@10
|
260 }
|
meillo@10
|
261 }
|
meillo@10
|
262 } else {
|
meillo@10
|
263 fprintf(stderr, "Could not write spool file\n");
|
meillo@10
|
264 exit(EXIT_FAILURE);
|
meillo@10
|
265 }
|
meillo@10
|
266 } else {
|
meillo@10
|
267 switch (err) {
|
meillo@10
|
268 case AERR_EOF:
|
meillo@10
|
269 fprintf(stderr, "unexpected EOF.\n");
|
meillo@10
|
270 exit(EXIT_FAILURE);
|
meillo@10
|
271 case AERR_NORCPT:
|
meillo@10
|
272 fprintf(stderr, "no recipients.\n");
|
meillo@10
|
273 exit(EXIT_FAILURE);
|
meillo@117
|
274 case AERR_SIZE:
|
meillo@117
|
275 fprintf(stderr, "max message size exceeded.\n");
|
meillo@117
|
276 exit(EXIT_FAILURE);
|
meillo@10
|
277 default:
|
meillo@10
|
278 /* should never happen: */
|
meillo@10
|
279 fprintf(stderr, "Unknown error (%d)\r\n", err);
|
meillo@10
|
280 exit(EXIT_FAILURE);
|
meillo@10
|
281 }
|
meillo@10
|
282 exit(EXIT_FAILURE);
|
meillo@0
|
283 }
|
meillo@0
|
284 }
|
meillo@0
|
285
|
meillo@0
|
286 int
|
meillo@0
|
287 main(int argc, char *argv[])
|
meillo@0
|
288 {
|
meillo@10
|
289 /* cmd line flags */
|
meillo@10
|
290 gchar *conf_file = CONF_FILE;
|
meillo@10
|
291 gint arg = 1;
|
meillo@0
|
292
|
meillo@10
|
293 gboolean do_listen = FALSE;
|
meillo@10
|
294 gboolean do_runq = FALSE;
|
meillo@10
|
295 gboolean do_runq_online = FALSE;
|
meillo@0
|
296
|
meillo@10
|
297 gboolean do_queue = FALSE;
|
meillo@0
|
298
|
meillo@10
|
299 gboolean do_verbose = FALSE;
|
meillo@10
|
300 gint debug_level = -1;
|
meillo@0
|
301
|
meillo@10
|
302 mta_mode mta_mode = MODE_ACCEPT;
|
meillo@0
|
303
|
meillo@10
|
304 gint queue_interval = 0;
|
meillo@10
|
305 gboolean opt_t = FALSE;
|
meillo@10
|
306 gboolean opt_i = FALSE;
|
meillo@10
|
307 gboolean opt_odb = FALSE;
|
meillo@10
|
308 gboolean opt_oem = FALSE;
|
meillo@10
|
309 gboolean exit_failure = FALSE;
|
meillo@0
|
310
|
meillo@10
|
311 gchar *M_cmd = NULL;
|
meillo@0
|
312
|
meillo@10
|
313 gint exit_code = EXIT_SUCCESS;
|
meillo@10
|
314 gchar *route_name = NULL;
|
meillo@10
|
315 gchar *progname;
|
meillo@10
|
316 gchar *f_address = NULL;
|
meillo@10
|
317 gchar *full_sender_name = NULL;
|
meillo@10
|
318 address *return_path = NULL; /* may be changed by -f option */
|
meillo@0
|
319
|
meillo@10
|
320 progname = get_progname(argv[0]);
|
meillo@0
|
321
|
meillo@10
|
322 if (strcmp(progname, "mailq") == 0) {
|
meillo@10
|
323 mta_mode = MODE_LIST;
|
meillo@10
|
324 } else if (strcmp(progname, "mailrm") == 0) {
|
meillo@10
|
325 mta_mode = MODE_MCMD;
|
meillo@10
|
326 M_cmd = "rm";
|
meillo@10
|
327 } else if (strcmp(progname, "runq") == 0) {
|
meillo@10
|
328 mta_mode = MODE_RUNQUEUE;
|
meillo@10
|
329 do_runq = TRUE;
|
meillo@10
|
330 } else if (strcmp(progname, "rmail") == 0) {
|
meillo@89
|
331 /* the `rmail' alias should probably be removed now
|
meillo@89
|
332 that we have the rmail script. But let's keep it
|
meillo@89
|
333 for some while for compatibility. 2010-06-19 */
|
meillo@10
|
334 mta_mode = MODE_ACCEPT;
|
meillo@10
|
335 opt_i = TRUE;
|
meillo@10
|
336 } else if (strcmp(progname, "smtpd") == 0 || strcmp(progname, "in.smtpd") == 0) {
|
meillo@10
|
337 mta_mode = MODE_SMTP;
|
meillo@10
|
338 }
|
meillo@0
|
339
|
meillo@10
|
340 /* parse cmd line */
|
meillo@10
|
341 while (arg < argc) {
|
meillo@10
|
342 gint pos = 0;
|
meillo@10
|
343 if ((argv[arg][pos] == '-') && (argv[arg][pos + 1] != '-')) {
|
meillo@10
|
344 pos++;
|
meillo@10
|
345 switch (argv[arg][pos++]) {
|
meillo@10
|
346 case 'b':
|
meillo@10
|
347 switch (argv[arg][pos++]) {
|
meillo@10
|
348 case 'd':
|
meillo@10
|
349 do_listen = TRUE;
|
meillo@10
|
350 mta_mode = MODE_DAEMON;
|
meillo@10
|
351 break;
|
meillo@10
|
352 case 'i':
|
meillo@10
|
353 /* ignored */
|
meillo@10
|
354 mta_mode = MODE_BI;
|
meillo@10
|
355 break;
|
meillo@10
|
356 case 's':
|
meillo@10
|
357 mta_mode = MODE_SMTP;
|
meillo@10
|
358 break;
|
meillo@10
|
359 case 'p':
|
meillo@10
|
360 mta_mode = MODE_LIST;
|
meillo@10
|
361 break;
|
meillo@10
|
362 case 'V':
|
meillo@10
|
363 mta_mode = MODE_VERSION;
|
meillo@10
|
364 break;
|
meillo@10
|
365 default:
|
meillo@10
|
366 fprintf(stderr, "unrecognized option '%s'\n", argv[arg]);
|
meillo@10
|
367 exit(EXIT_FAILURE);
|
meillo@10
|
368 }
|
meillo@10
|
369 break;
|
meillo@10
|
370 case 'B':
|
meillo@10
|
371 /* we ignore this and throw the argument away */
|
meillo@10
|
372 get_optarg(argv, argc, &arg, &pos);
|
meillo@10
|
373 break;
|
meillo@10
|
374 case 'C':
|
meillo@10
|
375 if (!(conf_file = get_optarg(argv, argc, &arg, &pos))) {
|
meillo@10
|
376 fprintf(stderr, "-C requires a filename as argument.\n");
|
meillo@10
|
377 exit(EXIT_FAILURE);
|
meillo@10
|
378 }
|
meillo@10
|
379 break;
|
meillo@10
|
380 case 'F':
|
meillo@10
|
381 {
|
meillo@10
|
382 full_sender_name = get_optarg(argv, argc, &arg, &pos);
|
meillo@10
|
383 if (!full_sender_name) {
|
meillo@10
|
384 fprintf(stderr, "-F requires a name as an argument\n");
|
meillo@10
|
385 exit(EXIT_FAILURE);
|
meillo@10
|
386 }
|
meillo@10
|
387 }
|
meillo@10
|
388 break;
|
meillo@10
|
389 case 'd':
|
meillo@10
|
390 if (getuid() == 0) {
|
meillo@10
|
391 char *lvl = get_optarg(argv, argc, &arg, &pos);
|
meillo@10
|
392 if (lvl)
|
meillo@10
|
393 debug_level = atoi(lvl);
|
meillo@10
|
394 else {
|
meillo@10
|
395 fprintf(stderr, "-d requires a number as an argument.\n");
|
meillo@10
|
396 exit(EXIT_FAILURE);
|
meillo@10
|
397 }
|
meillo@10
|
398 } else {
|
meillo@10
|
399 fprintf(stderr, "only root may set the debug level.\n");
|
meillo@10
|
400 exit(EXIT_FAILURE);
|
meillo@10
|
401 }
|
meillo@10
|
402 break;
|
meillo@10
|
403 case 'f':
|
meillo@10
|
404 /* set return path */
|
meillo@10
|
405 {
|
meillo@10
|
406 gchar *address;
|
meillo@10
|
407 address = get_optarg(argv, argc, &arg, &pos);
|
meillo@10
|
408 if (address) {
|
meillo@10
|
409 f_address = g_strdup(address);
|
meillo@10
|
410 } else {
|
meillo@10
|
411 fprintf(stderr, "-f requires an address as an argument\n");
|
meillo@10
|
412 exit(EXIT_FAILURE);
|
meillo@10
|
413 }
|
meillo@10
|
414 }
|
meillo@10
|
415 break;
|
meillo@10
|
416 case 'i':
|
meillo@10
|
417 if (argv[arg][pos] == 0) {
|
meillo@10
|
418 opt_i = TRUE;
|
meillo@10
|
419 exit_failure = FALSE; /* may override -oem */
|
meillo@10
|
420 } else {
|
meillo@10
|
421 fprintf(stderr, "unrecognized option '%s'\n", argv[arg]);
|
meillo@10
|
422 exit(EXIT_FAILURE);
|
meillo@10
|
423 }
|
meillo@10
|
424 break;
|
meillo@10
|
425 case 'M':
|
meillo@10
|
426 {
|
meillo@10
|
427 mta_mode = MODE_MCMD;
|
meillo@10
|
428 M_cmd = g_strdup(&(argv[arg][pos]));
|
meillo@10
|
429 }
|
meillo@10
|
430 break;
|
meillo@10
|
431 case 'o':
|
meillo@10
|
432 switch (argv[arg][pos++]) {
|
meillo@10
|
433 case 'e':
|
meillo@10
|
434 if (argv[arg][pos++] == 'm') /* -oem */
|
meillo@10
|
435 if (!opt_i)
|
meillo@10
|
436 exit_failure = TRUE;
|
meillo@10
|
437 opt_oem = TRUE;
|
meillo@10
|
438 break;
|
meillo@10
|
439 case 'd':
|
meillo@10
|
440 if (argv[arg][pos] == 'b') /* -odb */
|
meillo@10
|
441 opt_odb = TRUE;
|
meillo@10
|
442 else if (argv[arg][pos] == 'q') /* -odq */
|
meillo@10
|
443 do_queue = TRUE;
|
meillo@10
|
444 break;
|
meillo@10
|
445 case 'i':
|
meillo@10
|
446 opt_i = TRUE;
|
meillo@10
|
447 exit_failure = FALSE; /* may override -oem */
|
meillo@10
|
448 break;
|
meillo@10
|
449 }
|
meillo@10
|
450 break;
|
meillo@10
|
451
|
meillo@10
|
452 case 'q':
|
meillo@10
|
453 {
|
meillo@10
|
454 gchar *optarg;
|
meillo@10
|
455
|
meillo@10
|
456 do_runq = TRUE;
|
meillo@10
|
457 mta_mode = MODE_RUNQUEUE;
|
meillo@10
|
458 if (argv[arg][pos] == 'o') {
|
meillo@10
|
459 pos++;
|
meillo@10
|
460 do_runq = FALSE;
|
meillo@10
|
461 do_runq_online = TRUE;
|
meillo@10
|
462 /* can be NULL, then we use online detection method */
|
meillo@10
|
463 route_name = get_optarg(argv, argc, &arg, &pos);
|
meillo@10
|
464 } else
|
meillo@10
|
465 if ((optarg = get_optarg(argv, argc, &arg, &pos))) {
|
meillo@10
|
466 mta_mode = MODE_DAEMON;
|
meillo@10
|
467 queue_interval = time_interval(optarg, &pos);
|
meillo@10
|
468 }
|
meillo@10
|
469 }
|
meillo@10
|
470 break;
|
meillo@10
|
471 case 't':
|
meillo@10
|
472 if (argv[arg][pos] == 0) {
|
meillo@10
|
473 opt_t = TRUE;
|
meillo@10
|
474 } else {
|
meillo@10
|
475 fprintf(stderr, "unrecognized option '%s'\n", argv[arg]);
|
meillo@10
|
476 exit(EXIT_FAILURE);
|
meillo@10
|
477 }
|
meillo@10
|
478 break;
|
meillo@10
|
479 case 'v':
|
meillo@10
|
480 do_verbose = TRUE;
|
meillo@10
|
481 break;
|
meillo@10
|
482 default:
|
meillo@10
|
483 fprintf(stderr, "unrecognized option '%s'\n", argv[arg]);
|
meillo@10
|
484 exit(EXIT_FAILURE);
|
meillo@10
|
485 }
|
meillo@10
|
486 } else {
|
meillo@10
|
487 if (argv[arg][pos + 1] == '-') {
|
meillo@10
|
488 if (argv[arg][pos + 2] != '\0') {
|
meillo@10
|
489 fprintf(stderr, "unrecognized option '%s'\n", argv[arg]);
|
meillo@10
|
490 exit(EXIT_FAILURE);
|
meillo@10
|
491 }
|
meillo@10
|
492 arg++;
|
meillo@10
|
493 }
|
meillo@10
|
494 break;
|
meillo@10
|
495 }
|
meillo@10
|
496 arg++;
|
meillo@0
|
497 }
|
meillo@0
|
498
|
meillo@10
|
499 if (mta_mode == MODE_VERSION) {
|
meillo@12
|
500 gchar *with_resolver = "";
|
meillo@12
|
501 gchar *with_auth = "";
|
meillo@12
|
502 gchar *with_ident = "";
|
meillo@0
|
503
|
meillo@0
|
504 #ifdef ENABLE_RESOLVER
|
meillo@10
|
505 with_resolver = " +resolver";
|
meillo@0
|
506 #endif
|
meillo@0
|
507 #ifdef ENABLE_AUTH
|
meillo@10
|
508 with_auth = " +auth";
|
meillo@0
|
509 #endif
|
meillo@0
|
510 #ifdef ENABLE_IDENT
|
meillo@10
|
511 with_ident = " +ident";
|
meillo@0
|
512 #endif
|
meillo@0
|
513
|
meillo@205
|
514 printf("%s %s%s%s%s\n", PACKAGE, VERSION, with_resolver, with_auth, with_ident);
|
meillo@0
|
515
|
meillo@10
|
516 exit(EXIT_SUCCESS);
|
meillo@10
|
517 }
|
meillo@0
|
518
|
meillo@10
|
519 /* initialize random generator */
|
meillo@10
|
520 srand(time(NULL));
|
meillo@10
|
521 /* ignore SIGPIPE signal */
|
meillo@10
|
522 signal(SIGPIPE, SIG_IGN);
|
meillo@0
|
523
|
meillo@73
|
524 /* close all possibly open file descriptors, except std{in,out,err} */
|
meillo@10
|
525 {
|
meillo@10
|
526 int i, max_fd = sysconf(_SC_OPEN_MAX);
|
meillo@0
|
527
|
meillo@10
|
528 if (max_fd <= 0)
|
meillo@10
|
529 max_fd = 64;
|
meillo@10
|
530 for (i = 3; i < max_fd; i++)
|
meillo@10
|
531 close(i);
|
meillo@10
|
532 }
|
meillo@0
|
533
|
meillo@10
|
534 init_conf();
|
meillo@0
|
535
|
meillo@10
|
536 /* if we are not privileged, and the config file was changed we
|
meillo@10
|
537 implicetely set the the run_as_user flag and give up all
|
meillo@10
|
538 privileges.
|
meillo@0
|
539
|
meillo@10
|
540 So it is possible for a user to run his own daemon without
|
meillo@10
|
541 breaking security.
|
meillo@10
|
542 */
|
meillo@10
|
543 if (strcmp(conf_file, CONF_FILE) != 0) {
|
meillo@10
|
544 if (conf.orig_uid != 0) {
|
meillo@10
|
545 conf.run_as_user = TRUE;
|
meillo@10
|
546 seteuid(conf.orig_uid);
|
meillo@10
|
547 setegid(conf.orig_gid);
|
meillo@10
|
548 setuid(conf.orig_uid);
|
meillo@10
|
549 setgid(conf.orig_gid);
|
meillo@10
|
550 }
|
meillo@10
|
551 }
|
meillo@0
|
552
|
meillo@155
|
553 conf.log_dir = LOG_DIR;
|
meillo@155
|
554 logopen();
|
meillo@155
|
555 if (!read_conf(conf_file)) {
|
meillo@155
|
556 logwrite(LOG_ALERT, "SHUTTING DOWN due to problems reading config\n");
|
meillo@155
|
557 exit(5);
|
meillo@155
|
558 }
|
meillo@155
|
559 logclose();
|
meillo@0
|
560
|
meillo@10
|
561 if (do_queue)
|
meillo@10
|
562 conf.do_queue = TRUE;
|
meillo@10
|
563 if (do_verbose)
|
meillo@10
|
564 conf.do_verbose = TRUE;
|
meillo@10
|
565 if (debug_level >= 0) /* if >= 0, it was given by argument */
|
meillo@10
|
566 conf.debug_level = debug_level;
|
meillo@0
|
567
|
meillo@46
|
568 /* It appears that changing to / ensures that we are never in
|
meillo@46
|
569 a directory which we cannot access. This situation could be
|
meillo@46
|
570 possible after changing identity.
|
meillo@46
|
571 Maybe we should only change to / if we not run as user, to
|
meillo@46
|
572 allow relative paths for log files in test setups for
|
meillo@46
|
573 instance.
|
meillo@46
|
574 */
|
meillo@10
|
575 chdir("/");
|
meillo@0
|
576
|
meillo@10
|
577 if (!conf.run_as_user) {
|
meillo@10
|
578 if (setgid(0) != 0) {
|
meillo@10
|
579 fprintf(stderr, "could not set gid to 0. Is the setuid bit set? : %s\n", strerror(errno));
|
meillo@10
|
580 exit(EXIT_FAILURE);
|
meillo@10
|
581 }
|
meillo@10
|
582 if (setuid(0) != 0) {
|
meillo@10
|
583 fprintf(stderr, "could not gain root privileges. Is the setuid bit set? : %s\n", strerror(errno));
|
meillo@10
|
584 exit(EXIT_FAILURE);
|
meillo@10
|
585 }
|
meillo@10
|
586 }
|
meillo@0
|
587
|
meillo@10
|
588 if (!logopen()) {
|
meillo@10
|
589 fprintf(stderr, "could not open log file\n");
|
meillo@10
|
590 exit(EXIT_FAILURE);
|
meillo@10
|
591 }
|
meillo@0
|
592
|
meillo@10
|
593 DEBUG(1) debugf("masqmail %s starting\n", VERSION);
|
meillo@0
|
594
|
meillo@10
|
595 DEBUG(5) {
|
meillo@10
|
596 gchar **str = argv;
|
meillo@10
|
597 debugf("args: \n");
|
meillo@10
|
598 while (*str) {
|
meillo@10
|
599 debugf("%s \n", *str);
|
meillo@10
|
600 str++;
|
meillo@10
|
601 }
|
meillo@10
|
602 }
|
meillo@10
|
603 DEBUG(5) debugf("queue_interval = %d\n", queue_interval);
|
meillo@0
|
604
|
meillo@10
|
605 if (f_address) {
|
meillo@10
|
606 return_path = create_address_qualified(f_address, TRUE, conf.host_name);
|
meillo@10
|
607 g_free(f_address);
|
meillo@10
|
608 if (!return_path) {
|
meillo@10
|
609 fprintf(stderr, "invalid RFC821 address: %s\n", f_address);
|
meillo@10
|
610 exit(EXIT_FAILURE);
|
meillo@10
|
611 }
|
meillo@10
|
612 }
|
meillo@10
|
613
|
meillo@10
|
614 switch (mta_mode) {
|
meillo@10
|
615 case MODE_DAEMON:
|
meillo@10
|
616 mode_daemon(do_listen, queue_interval, argv);
|
meillo@10
|
617 break;
|
meillo@10
|
618 case MODE_RUNQUEUE:
|
meillo@10
|
619 {
|
meillo@10
|
620 /* queue runs */
|
meillo@10
|
621 set_identity(conf.orig_uid, "queue run");
|
meillo@0
|
622
|
meillo@10
|
623 if (do_runq)
|
meillo@10
|
624 exit_code = queue_run() ? EXIT_SUCCESS : EXIT_FAILURE;
|
meillo@10
|
625
|
meillo@10
|
626 if (do_runq_online) {
|
meillo@10
|
627 if (route_name != NULL) {
|
meillo@10
|
628 conf.online_detect = g_strdup("argument");
|
meillo@10
|
629 set_online_name(route_name);
|
meillo@10
|
630 }
|
meillo@10
|
631 exit_code =
|
meillo@10
|
632 queue_run_online() ? EXIT_SUCCESS : EXIT_FAILURE;
|
meillo@10
|
633 }
|
meillo@10
|
634 }
|
meillo@10
|
635 break;
|
meillo@10
|
636
|
meillo@10
|
637 case MODE_SMTP:
|
meillo@10
|
638 mode_smtp();
|
meillo@10
|
639 break;
|
meillo@10
|
640
|
meillo@10
|
641 case MODE_LIST:
|
meillo@10
|
642 queue_list();
|
meillo@10
|
643 break;
|
meillo@10
|
644
|
meillo@10
|
645 case MODE_BI:
|
meillo@10
|
646 exit(EXIT_SUCCESS);
|
meillo@10
|
647 break; /* well... */
|
meillo@10
|
648
|
meillo@10
|
649 case MODE_MCMD:
|
meillo@10
|
650 if (strcmp(M_cmd, "rm") == 0) {
|
meillo@10
|
651 gboolean ok = FALSE;
|
meillo@10
|
652
|
meillo@10
|
653 set_euidgid(conf.mail_uid, conf.mail_gid, NULL, NULL);
|
meillo@10
|
654
|
meillo@10
|
655 if (is_privileged_user(conf.orig_uid)) {
|
meillo@10
|
656 for (; arg < argc; arg++) {
|
meillo@10
|
657 if (queue_delete(argv[arg]))
|
meillo@10
|
658 ok = TRUE;
|
meillo@10
|
659 }
|
meillo@10
|
660 } else {
|
meillo@10
|
661 struct passwd *pw = getpwuid(conf.orig_uid);
|
meillo@10
|
662 if (pw) {
|
meillo@10
|
663 for (; arg < argc; arg++) {
|
meillo@10
|
664 message *msg = msg_spool_read(argv[arg], FALSE);
|
meillo@10
|
665 #ifdef ENABLE_IDENT
|
meillo@10
|
666 if (((msg->received_host == NULL) && (msg->received_prot == PROT_LOCAL))
|
meillo@10
|
667 || is_in_netlist(msg->received_host, conf.ident_trusted_nets)) {
|
meillo@10
|
668 #else
|
meillo@10
|
669 if ((msg->received_host == NULL) && (msg->received_prot == PROT_LOCAL)) {
|
meillo@10
|
670 #endif
|
meillo@10
|
671 if (msg->ident) {
|
meillo@10
|
672 if (strcmp(pw->pw_name, msg->ident) == 0) {
|
meillo@10
|
673 if (queue_delete(argv[arg]))
|
meillo@10
|
674 ok = TRUE;
|
meillo@10
|
675 } else {
|
meillo@10
|
676 fprintf(stderr, "you do not own message id %s\n", argv[arg]);
|
meillo@10
|
677 }
|
meillo@10
|
678 } else
|
meillo@10
|
679 fprintf(stderr, "message %s does not have an ident.\n", argv[arg]);
|
meillo@10
|
680 } else {
|
meillo@10
|
681 fprintf(stderr, "message %s was not received locally or from a trusted network.\n", argv[arg]);
|
meillo@10
|
682 }
|
meillo@10
|
683 }
|
meillo@10
|
684 } else {
|
meillo@10
|
685 fprintf(stderr, "could not find a passwd entry for uid %d: %s\n", conf.orig_uid, strerror(errno));
|
meillo@10
|
686 }
|
meillo@10
|
687 }
|
meillo@10
|
688 exit(ok ? EXIT_SUCCESS : EXIT_FAILURE);
|
meillo@10
|
689 } else {
|
meillo@10
|
690 fprintf(stderr, "unknown command %s\n", M_cmd);
|
meillo@10
|
691 exit(EXIT_FAILURE);
|
meillo@10
|
692 }
|
meillo@10
|
693 break;
|
meillo@10
|
694
|
meillo@10
|
695 case MODE_ACCEPT:
|
meillo@10
|
696 {
|
meillo@107
|
697 guint accept_flags = (opt_t ? ACC_DEL_RCPTS | ACC_RCPT_FROM_HEAD : 0)
|
meillo@110
|
698 | (opt_i ? ACC_DOT_IGNORE : ACC_NODOT_RELAX);
|
meillo@10
|
699 mode_accept(return_path, full_sender_name, accept_flags, &(argv[arg]), argc - arg);
|
meillo@10
|
700 exit(exit_failure ? EXIT_FAILURE : EXIT_SUCCESS);
|
meillo@10
|
701 }
|
meillo@10
|
702 break;
|
meillo@10
|
703 case MODE_NONE:
|
meillo@10
|
704 break;
|
meillo@10
|
705 default:
|
meillo@10
|
706 fprintf(stderr, "unknown mode: %d\n", mta_mode);
|
meillo@10
|
707 break;
|
meillo@0
|
708 }
|
meillo@0
|
709
|
meillo@10
|
710 logclose();
|
meillo@0
|
711
|
meillo@10
|
712 exit(exit_code);
|
meillo@0
|
713 }
|