rev |
line source |
meillo@0
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1 /* MasqMail
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2 Copyright (C) 1999-2001 Oliver Kurth
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3 Copyright (C) 2010 markus schnalke <meillo@marmaro.de>
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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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22 #include <stdlib.h>
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23 #include <string.h>
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24 #include <unistd.h>
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25 #include <sys/types.h>
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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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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 neither a 'get' mode
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38 nor a 'queue daemon' mode. These, as well as the distinction beween
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39 the two (non exclusive) daemon (queue and listen) modes are handled
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40 by flags.*/
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41 typedef enum _mta_mode {
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42 MODE_ACCEPT = 0, /* accept message on stdin */
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43 MODE_DAEMON, /* run as daemon */
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44 MODE_RUNQUEUE, /* single queue run, online or offline */
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45 MODE_GET_DAEMON, /* run as get (retrieve) daemon */
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46 MODE_SMTP, /* accept SMTP on stdin */
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47 MODE_LIST, /* list queue */
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48 MODE_MCMD, /* do queue manipulation */
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49 MODE_VERSION, /* show version */
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50 MODE_BI, /* fake ;-) */
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51 MODE_NONE /* to prevent default MODE_ACCEPT */
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52 } mta_mode;
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53
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54 char *pidfile = NULL;
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55 volatile int sigterm_in_progress = 0;
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56
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57 static void
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58 sigterm_handler(int sig)
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59 {
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60 if (sigterm_in_progress)
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61 raise(sig);
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62 sigterm_in_progress = 1;
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63
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64 if (pidfile) {
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65 uid_t uid;
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66 uid = seteuid(0);
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67 if (unlink(pidfile) != 0)
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68 logwrite(LOG_WARNING, "could not delete pid file %s: %s\n", pidfile, strerror(errno));
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69 seteuid(uid); /* we exit anyway after this, just to be sure */
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70 }
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71
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72 signal(sig, SIG_DFL);
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73 raise(sig);
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74 }
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75
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76 #ifdef ENABLE_IDENT /* so far used for that only */
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77 static gboolean
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78 is_in_netlist(gchar * host, GList * netlist)
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79 {
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80 guint hostip = inet_addr(host);
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81 struct in_addr addr;
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82
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83 addr.s_addr = hostip;
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84 if (addr.s_addr != INADDR_NONE) {
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85 GList *node;
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86 foreach(netlist, node) {
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87 struct in_addr *net = (struct in_addr *) (node->data);
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88 if ((addr.s_addr & net->s_addr) == net->s_addr)
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89 return TRUE;
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90 }
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91 }
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92 return FALSE;
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93 }
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94 #endif
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95
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96 gchar*
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97 get_optarg(char *argv[], gint argc, gint * argp, gint * pos)
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98 {
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99 if (argv[*argp][*pos])
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100 return &(argv[*argp][*pos]);
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101 else {
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102 if (*argp + 1 < argc) {
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103 if (argv[(*argp) + 1][0] != '-') {
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104 (*argp)++;
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105 *pos = 0;
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106 return &(argv[*argp][*pos]);
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107 }
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108 }
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109 }
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110 return NULL;
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111 }
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112
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113 gchar*
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114 get_progname(gchar * arg0)
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115 {
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116 gchar *p = arg0 + strlen(arg0) - 1;
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117 while (p > arg0) {
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118 if (*p == '/')
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119 return p + 1;
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120 p--;
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121 }
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122 return p;
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123 }
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124
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125 gboolean
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126 write_pidfile(gchar * name)
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127 {
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128 FILE *fptr;
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129
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130 if ((fptr = fopen(name, "wt"))) {
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131 fprintf(fptr, "%d\n", getpid());
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132 fclose(fptr);
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133 pidfile = strdup(name);
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134 return TRUE;
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135 }
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136 logwrite(LOG_WARNING, "could not write pid file: %s\n", strerror(errno));
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137 return FALSE;
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138 }
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139
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140 static void
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141 mode_daemon(gboolean do_listen, gint queue_interval, char *argv[])
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142 {
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143 guint pid;
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144
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145 /* daemon */
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146 if (!conf.run_as_user) {
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147 if ((conf.orig_uid != 0) && (conf.orig_uid != conf.mail_uid)) {
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148 fprintf(stderr, "must be root or %s for daemon.\n", DEF_MAIL_USER);
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149 exit(EXIT_FAILURE);
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150 }
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151 }
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152
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153 /* reparent to init only if init is not already the parent */
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154 if (getppid() != 1) {
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155 if ((pid = fork()) > 0) {
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156 exit(EXIT_SUCCESS);
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157 } else if (pid < 0) {
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158 logwrite(LOG_ALERT, "could not fork!");
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159 exit(EXIT_FAILURE);
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160 }
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161 }
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162
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163 signal(SIGTERM, sigterm_handler);
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164 write_pidfile(PIDFILEDIR "/masqmail.pid");
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165
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166 conf.do_verbose = FALSE;
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167
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168 /* closing and reopening the log ensures that it is open afterwards
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169 because it is possible that the log is assigned to fd 1 and gets
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170 thus closes by fclose(stdout). Similar for the debugfile.
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171 */
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172 logclose();
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173 fclose(stdin);
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174 fclose(stdout);
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175 fclose(stderr);
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176 logopen();
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177
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178 logwrite(LOG_NOTICE, "%s %s daemon starting", PACKAGE, VERSION);
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179 listen_port(do_listen ? conf.listen_addresses : NULL, queue_interval, argv);
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180 }
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181
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182 #ifdef ENABLE_POP3
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183 static void
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184 mode_get_daemon(gint get_interval, char *argv[])
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185 {
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186 guint pid;
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187
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188 /* daemon */
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189 if (!conf.run_as_user) {
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190 if ((conf.orig_uid != 0) && (conf.orig_uid != conf.mail_uid)) {
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191 fprintf(stderr, "must be root or %s for daemon.\n", DEF_MAIL_USER);
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192 exit(EXIT_FAILURE);
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193 }
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194 }
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195
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196 /* reparent to init only if init is not already the parent */
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197 if (getppid() != 1) {
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198 if ((pid = fork()) > 0) {
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199 exit(EXIT_SUCCESS);
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200 } else if (pid < 0) {
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201 logwrite(LOG_ALERT, "could not fork!");
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202 exit(EXIT_FAILURE);
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203 }
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204 }
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205
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206 signal(SIGTERM, sigterm_handler);
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207 write_pidfile(PIDFILEDIR "/masqmail-get.pid");
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208
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209 conf.do_verbose = FALSE;
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210
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211 /* closing and reopening the log ensures that it is open afterwards
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212 because it is possible that the log is assigned to fd 1 and gets
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213 thus closes by fclose(stdout). Similar for the debugfile.
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214 */
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215 logclose();
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216 fclose(stdin);
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217 fclose(stdout);
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218 fclose(stderr);
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219 logopen();
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220
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221 get_daemon(get_interval, argv);
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222 }
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223 #endif
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224
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225 #ifdef ENABLE_SMTP_SERVER
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226 static void
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227 mode_smtp()
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228 {
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229 /* accept smtp message on stdin */
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230 /* write responses to stderr. */
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231
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232 struct sockaddr_in saddr;
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233 gchar *peername = NULL;
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234 int dummy = sizeof(saddr);
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235
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236 conf.do_verbose = FALSE;
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237
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238 if (!conf.run_as_user) {
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239 seteuid(conf.orig_uid);
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240 setegid(conf.orig_gid);
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241 }
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242
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243 DEBUG(5) debugf("accepting smtp message on stdin\n");
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244
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245 if (getpeername(0, (struct sockaddr *) (&saddr), &dummy) == 0) {
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246 peername = g_strdup(inet_ntoa(saddr.sin_addr));
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247 } else if (errno != ENOTSOCK)
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248 exit(EXIT_FAILURE);
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249
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250 smtp_in(stdin, stderr, peername, NULL);
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251 }
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252 #endif
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253
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254 static void
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255 mode_accept(address * return_path, gchar * full_sender_name, guint accept_flags, char **addresses, int addr_cnt)
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256 {
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meillo@10
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257 /* accept message on stdin */
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258 accept_error err;
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259 message *msg = create_message();
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meillo@10
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260 gint i;
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261
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meillo@83
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262 if (return_path && !is_privileged_user(conf.orig_uid)) {
|
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263 fprintf(stderr, "must be root, %s or in group %s for setting return path.\n", DEF_MAIL_USER, DEF_MAIL_GROUP);
|
meillo@83
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264 exit(EXIT_FAILURE);
|
meillo@10
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265 }
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266
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meillo@10
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267 if (!conf.run_as_user) {
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meillo@10
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268 seteuid(conf.orig_uid);
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meillo@10
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269 setegid(conf.orig_gid);
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meillo@10
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270 }
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271
|
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272 DEBUG(5) debugf("accepting message on stdin\n");
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273
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274 msg->received_prot = PROT_LOCAL;
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275 for (i = 0; i < addr_cnt; i++) {
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276 if (addresses[i][0] != '|')
|
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277 msg->rcpt_list = g_list_append(msg->rcpt_list, create_address_qualified(addresses[i], TRUE, conf.host_name));
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278 else {
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279 logwrite(LOG_ALERT, "no pipe allowed as recipient address: %s\n", addresses[i]);
|
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280 exit(EXIT_FAILURE);
|
meillo@10
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281 }
|
meillo@10
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282 }
|
meillo@0
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283
|
meillo@10
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284 /* -f option */
|
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285 msg->return_path = return_path;
|
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286
|
meillo@10
|
287 /* -F option */
|
meillo@10
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288 msg->full_sender_name = full_sender_name;
|
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289
|
meillo@10
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290 if ((err = accept_message(stdin, msg, accept_flags)) == AERR_OK) {
|
meillo@10
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291 if (spool_write(msg, TRUE)) {
|
meillo@10
|
292 pid_t pid;
|
meillo@10
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293 logwrite(LOG_NOTICE, "%s <= %s with %s\n", msg->uid, addr_string(msg->return_path), prot_names[PROT_LOCAL]);
|
meillo@0
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294
|
meillo@10
|
295 if (!conf.do_queue) {
|
meillo@10
|
296 if ((pid = fork()) == 0) {
|
meillo@10
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297 conf.do_verbose = FALSE;
|
meillo@10
|
298 fclose(stdin);
|
meillo@10
|
299 fclose(stdout);
|
meillo@10
|
300 fclose(stderr);
|
meillo@10
|
301 if (deliver(msg)) {
|
meillo@10
|
302 exit(EXIT_SUCCESS);
|
meillo@10
|
303 } else
|
meillo@10
|
304 exit(EXIT_FAILURE);
|
meillo@10
|
305 } else if (pid < 0) {
|
meillo@10
|
306 logwrite(LOG_ALERT, "could not fork for delivery, id = %s", msg->uid);
|
meillo@10
|
307 }
|
meillo@10
|
308 }
|
meillo@10
|
309 } else {
|
meillo@10
|
310 fprintf(stderr, "Could not write spool file\n");
|
meillo@10
|
311 exit(EXIT_FAILURE);
|
meillo@10
|
312 }
|
meillo@10
|
313 } else {
|
meillo@10
|
314 switch (err) {
|
meillo@10
|
315 case AERR_EOF:
|
meillo@10
|
316 fprintf(stderr, "unexpected EOF.\n");
|
meillo@10
|
317 exit(EXIT_FAILURE);
|
meillo@10
|
318 case AERR_NORCPT:
|
meillo@10
|
319 fprintf(stderr, "no recipients.\n");
|
meillo@10
|
320 exit(EXIT_FAILURE);
|
meillo@117
|
321 case AERR_SIZE:
|
meillo@117
|
322 fprintf(stderr, "max message size exceeded.\n");
|
meillo@117
|
323 exit(EXIT_FAILURE);
|
meillo@10
|
324 default:
|
meillo@10
|
325 /* should never happen: */
|
meillo@10
|
326 fprintf(stderr, "Unknown error (%d)\r\n", err);
|
meillo@10
|
327 exit(EXIT_FAILURE);
|
meillo@10
|
328 }
|
meillo@10
|
329 exit(EXIT_FAILURE);
|
meillo@0
|
330 }
|
meillo@0
|
331 }
|
meillo@0
|
332
|
meillo@0
|
333 int
|
meillo@0
|
334 main(int argc, char *argv[])
|
meillo@0
|
335 {
|
meillo@10
|
336 /* cmd line flags */
|
meillo@10
|
337 gchar *conf_file = CONF_FILE;
|
meillo@10
|
338 gint arg = 1;
|
meillo@10
|
339 gboolean do_get = FALSE;
|
meillo@10
|
340 gboolean do_get_online = FALSE;
|
meillo@0
|
341
|
meillo@10
|
342 gboolean do_listen = FALSE;
|
meillo@10
|
343 gboolean do_runq = FALSE;
|
meillo@10
|
344 gboolean do_runq_online = FALSE;
|
meillo@0
|
345
|
meillo@10
|
346 gboolean do_queue = FALSE;
|
meillo@0
|
347
|
meillo@10
|
348 gboolean do_verbose = FALSE;
|
meillo@10
|
349 gint debug_level = -1;
|
meillo@0
|
350
|
meillo@10
|
351 mta_mode mta_mode = MODE_ACCEPT;
|
meillo@0
|
352
|
meillo@10
|
353 gint queue_interval = 0;
|
meillo@10
|
354 gint get_interval = 0;
|
meillo@10
|
355 gboolean opt_t = FALSE;
|
meillo@10
|
356 gboolean opt_i = FALSE;
|
meillo@10
|
357 gboolean opt_odb = FALSE;
|
meillo@10
|
358 gboolean opt_oem = FALSE;
|
meillo@10
|
359 gboolean exit_failure = FALSE;
|
meillo@0
|
360
|
meillo@10
|
361 gchar *M_cmd = NULL;
|
meillo@0
|
362
|
meillo@10
|
363 gint exit_code = EXIT_SUCCESS;
|
meillo@10
|
364 gchar *route_name = NULL;
|
meillo@10
|
365 gchar *get_name = NULL;
|
meillo@10
|
366 gchar *progname;
|
meillo@10
|
367 gchar *f_address = NULL;
|
meillo@10
|
368 gchar *full_sender_name = NULL;
|
meillo@10
|
369 address *return_path = NULL; /* may be changed by -f option */
|
meillo@0
|
370
|
meillo@10
|
371 progname = get_progname(argv[0]);
|
meillo@0
|
372
|
meillo@10
|
373 if (strcmp(progname, "mailq") == 0) {
|
meillo@10
|
374 mta_mode = MODE_LIST;
|
meillo@10
|
375 } else if (strcmp(progname, "mailrm") == 0) {
|
meillo@10
|
376 mta_mode = MODE_MCMD;
|
meillo@10
|
377 M_cmd = "rm";
|
meillo@10
|
378 } else if (strcmp(progname, "runq") == 0) {
|
meillo@10
|
379 mta_mode = MODE_RUNQUEUE;
|
meillo@10
|
380 do_runq = TRUE;
|
meillo@10
|
381 } else if (strcmp(progname, "rmail") == 0) {
|
meillo@89
|
382 /* the `rmail' alias should probably be removed now
|
meillo@89
|
383 that we have the rmail script. But let's keep it
|
meillo@89
|
384 for some while for compatibility. 2010-06-19 */
|
meillo@10
|
385 mta_mode = MODE_ACCEPT;
|
meillo@10
|
386 opt_i = TRUE;
|
meillo@10
|
387 } else if (strcmp(progname, "smtpd") == 0 || strcmp(progname, "in.smtpd") == 0) {
|
meillo@10
|
388 mta_mode = MODE_SMTP;
|
meillo@10
|
389 }
|
meillo@0
|
390
|
meillo@10
|
391 /* parse cmd line */
|
meillo@10
|
392 while (arg < argc) {
|
meillo@10
|
393 gint pos = 0;
|
meillo@10
|
394 if ((argv[arg][pos] == '-') && (argv[arg][pos + 1] != '-')) {
|
meillo@10
|
395 pos++;
|
meillo@10
|
396 switch (argv[arg][pos++]) {
|
meillo@10
|
397 case 'b':
|
meillo@10
|
398 switch (argv[arg][pos++]) {
|
meillo@10
|
399 case 'd':
|
meillo@10
|
400 do_listen = TRUE;
|
meillo@10
|
401 mta_mode = MODE_DAEMON;
|
meillo@10
|
402 break;
|
meillo@10
|
403 case 'i':
|
meillo@10
|
404 /* ignored */
|
meillo@10
|
405 mta_mode = MODE_BI;
|
meillo@10
|
406 break;
|
meillo@10
|
407 case 's':
|
meillo@10
|
408 mta_mode = MODE_SMTP;
|
meillo@10
|
409 break;
|
meillo@10
|
410 case 'p':
|
meillo@10
|
411 mta_mode = MODE_LIST;
|
meillo@10
|
412 break;
|
meillo@10
|
413 case 'V':
|
meillo@10
|
414 mta_mode = MODE_VERSION;
|
meillo@10
|
415 break;
|
meillo@10
|
416 default:
|
meillo@10
|
417 fprintf(stderr, "unrecognized option '%s'\n", argv[arg]);
|
meillo@10
|
418 exit(EXIT_FAILURE);
|
meillo@10
|
419 }
|
meillo@10
|
420 break;
|
meillo@10
|
421 case 'B':
|
meillo@10
|
422 /* we ignore this and throw the argument away */
|
meillo@10
|
423 get_optarg(argv, argc, &arg, &pos);
|
meillo@10
|
424 break;
|
meillo@10
|
425 case 'C':
|
meillo@10
|
426 if (!(conf_file = get_optarg(argv, argc, &arg, &pos))) {
|
meillo@10
|
427 fprintf(stderr, "-C requires a filename as argument.\n");
|
meillo@10
|
428 exit(EXIT_FAILURE);
|
meillo@10
|
429 }
|
meillo@10
|
430 break;
|
meillo@10
|
431 case 'F':
|
meillo@10
|
432 {
|
meillo@10
|
433 full_sender_name = get_optarg(argv, argc, &arg, &pos);
|
meillo@10
|
434 if (!full_sender_name) {
|
meillo@10
|
435 fprintf(stderr, "-F requires a name as an argument\n");
|
meillo@10
|
436 exit(EXIT_FAILURE);
|
meillo@10
|
437 }
|
meillo@10
|
438 }
|
meillo@10
|
439 break;
|
meillo@10
|
440 case 'd':
|
meillo@10
|
441 if (getuid() == 0) {
|
meillo@10
|
442 char *lvl = get_optarg(argv, argc, &arg, &pos);
|
meillo@10
|
443 if (lvl)
|
meillo@10
|
444 debug_level = atoi(lvl);
|
meillo@10
|
445 else {
|
meillo@10
|
446 fprintf(stderr, "-d requires a number as an argument.\n");
|
meillo@10
|
447 exit(EXIT_FAILURE);
|
meillo@10
|
448 }
|
meillo@10
|
449 } else {
|
meillo@10
|
450 fprintf(stderr, "only root may set the debug level.\n");
|
meillo@10
|
451 exit(EXIT_FAILURE);
|
meillo@10
|
452 }
|
meillo@10
|
453 break;
|
meillo@10
|
454 case 'f':
|
meillo@10
|
455 /* set return path */
|
meillo@10
|
456 {
|
meillo@10
|
457 gchar *address;
|
meillo@10
|
458 address = get_optarg(argv, argc, &arg, &pos);
|
meillo@10
|
459 if (address) {
|
meillo@10
|
460 f_address = g_strdup(address);
|
meillo@10
|
461 } else {
|
meillo@10
|
462 fprintf(stderr, "-f requires an address as an argument\n");
|
meillo@10
|
463 exit(EXIT_FAILURE);
|
meillo@10
|
464 }
|
meillo@10
|
465 }
|
meillo@10
|
466 break;
|
meillo@10
|
467 case 'g':
|
meillo@10
|
468 do_get = TRUE;
|
meillo@10
|
469 if (!mta_mode)
|
meillo@10
|
470 mta_mode = MODE_NONE; /* to prevent default MODE_ACCEPT */
|
meillo@10
|
471 if (argv[arg][pos] == 'o') {
|
meillo@10
|
472 pos++;
|
meillo@10
|
473 do_get_online = TRUE;
|
meillo@10
|
474 /* can be NULL, then we use online detection method */
|
meillo@10
|
475 route_name = get_optarg(argv, argc, &arg, &pos);
|
meillo@10
|
476
|
meillo@10
|
477 if (route_name != NULL) {
|
meillo@10
|
478 if (isdigit(route_name[0])) {
|
meillo@10
|
479 get_interval = time_interval(route_name, &pos);
|
meillo@10
|
480 route_name = get_optarg(argv, argc, &arg, &pos);
|
meillo@10
|
481 mta_mode = MODE_GET_DAEMON;
|
meillo@10
|
482 do_get = FALSE;
|
meillo@10
|
483 }
|
meillo@10
|
484 }
|
meillo@10
|
485 } else {
|
meillo@10
|
486 if ((optarg = get_optarg(argv, argc, &arg, &pos))) {
|
meillo@10
|
487 get_name = get_optarg(argv, argc, &arg, &pos);
|
meillo@10
|
488 }
|
meillo@10
|
489 }
|
meillo@10
|
490 break;
|
meillo@10
|
491 case 'i':
|
meillo@10
|
492 if (argv[arg][pos] == 0) {
|
meillo@10
|
493 opt_i = TRUE;
|
meillo@10
|
494 exit_failure = FALSE; /* may override -oem */
|
meillo@10
|
495 } else {
|
meillo@10
|
496 fprintf(stderr, "unrecognized option '%s'\n", argv[arg]);
|
meillo@10
|
497 exit(EXIT_FAILURE);
|
meillo@10
|
498 }
|
meillo@10
|
499 break;
|
meillo@10
|
500 case 'M':
|
meillo@10
|
501 {
|
meillo@10
|
502 mta_mode = MODE_MCMD;
|
meillo@10
|
503 M_cmd = g_strdup(&(argv[arg][pos]));
|
meillo@10
|
504 }
|
meillo@10
|
505 break;
|
meillo@10
|
506 case 'o':
|
meillo@10
|
507 switch (argv[arg][pos++]) {
|
meillo@10
|
508 case 'e':
|
meillo@10
|
509 if (argv[arg][pos++] == 'm') /* -oem */
|
meillo@10
|
510 if (!opt_i)
|
meillo@10
|
511 exit_failure = TRUE;
|
meillo@10
|
512 opt_oem = TRUE;
|
meillo@10
|
513 break;
|
meillo@10
|
514 case 'd':
|
meillo@10
|
515 if (argv[arg][pos] == 'b') /* -odb */
|
meillo@10
|
516 opt_odb = TRUE;
|
meillo@10
|
517 else if (argv[arg][pos] == 'q') /* -odq */
|
meillo@10
|
518 do_queue = TRUE;
|
meillo@10
|
519 break;
|
meillo@10
|
520 case 'i':
|
meillo@10
|
521 opt_i = TRUE;
|
meillo@10
|
522 exit_failure = FALSE; /* may override -oem */
|
meillo@10
|
523 break;
|
meillo@10
|
524 }
|
meillo@10
|
525 break;
|
meillo@10
|
526
|
meillo@10
|
527 case 'q':
|
meillo@10
|
528 {
|
meillo@10
|
529 gchar *optarg;
|
meillo@10
|
530
|
meillo@10
|
531 do_runq = TRUE;
|
meillo@10
|
532 mta_mode = MODE_RUNQUEUE;
|
meillo@10
|
533 if (argv[arg][pos] == 'o') {
|
meillo@10
|
534 pos++;
|
meillo@10
|
535 do_runq = FALSE;
|
meillo@10
|
536 do_runq_online = TRUE;
|
meillo@10
|
537 /* can be NULL, then we use online detection method */
|
meillo@10
|
538 route_name = get_optarg(argv, argc, &arg, &pos);
|
meillo@10
|
539 } else
|
meillo@10
|
540 if ((optarg = get_optarg(argv, argc, &arg, &pos))) {
|
meillo@10
|
541 mta_mode = MODE_DAEMON;
|
meillo@10
|
542 queue_interval = time_interval(optarg, &pos);
|
meillo@10
|
543 }
|
meillo@10
|
544 }
|
meillo@10
|
545 break;
|
meillo@10
|
546 case 't':
|
meillo@10
|
547 if (argv[arg][pos] == 0) {
|
meillo@10
|
548 opt_t = TRUE;
|
meillo@10
|
549 } else {
|
meillo@10
|
550 fprintf(stderr, "unrecognized option '%s'\n", argv[arg]);
|
meillo@10
|
551 exit(EXIT_FAILURE);
|
meillo@10
|
552 }
|
meillo@10
|
553 break;
|
meillo@10
|
554 case 'v':
|
meillo@10
|
555 do_verbose = TRUE;
|
meillo@10
|
556 break;
|
meillo@10
|
557 default:
|
meillo@10
|
558 fprintf(stderr, "unrecognized option '%s'\n", argv[arg]);
|
meillo@10
|
559 exit(EXIT_FAILURE);
|
meillo@10
|
560 }
|
meillo@10
|
561 } else {
|
meillo@10
|
562 if (argv[arg][pos + 1] == '-') {
|
meillo@10
|
563 if (argv[arg][pos + 2] != '\0') {
|
meillo@10
|
564 fprintf(stderr, "unrecognized option '%s'\n", argv[arg]);
|
meillo@10
|
565 exit(EXIT_FAILURE);
|
meillo@10
|
566 }
|
meillo@10
|
567 arg++;
|
meillo@10
|
568 }
|
meillo@10
|
569 break;
|
meillo@10
|
570 }
|
meillo@10
|
571 arg++;
|
meillo@0
|
572 }
|
meillo@0
|
573
|
meillo@10
|
574 if (mta_mode == MODE_VERSION) {
|
meillo@12
|
575 gchar *with_resolver = "";
|
meillo@12
|
576 gchar *with_smtp_server = "";
|
meillo@12
|
577 gchar *with_pop3 = "";
|
meillo@12
|
578 gchar *with_auth = "";
|
meillo@12
|
579 gchar *with_maildir = "";
|
meillo@12
|
580 gchar *with_ident = "";
|
meillo@12
|
581 gchar *with_mserver = "";
|
meillo@0
|
582
|
meillo@0
|
583 #ifdef ENABLE_RESOLVER
|
meillo@10
|
584 with_resolver = " +resolver";
|
meillo@0
|
585 #endif
|
meillo@0
|
586 #ifdef ENABLE_SMTP_SERVER
|
meillo@10
|
587 with_smtp_server = " +smtp-server";
|
meillo@0
|
588 #endif
|
meillo@0
|
589 #ifdef ENABLE_POP3
|
meillo@10
|
590 with_pop3 = " +pop3";
|
meillo@0
|
591 #endif
|
meillo@0
|
592 #ifdef ENABLE_AUTH
|
meillo@10
|
593 with_auth = " +auth";
|
meillo@0
|
594 #endif
|
meillo@0
|
595 #ifdef ENABLE_MAILDIR
|
meillo@10
|
596 with_maildir = " +maildir";
|
meillo@0
|
597 #endif
|
meillo@0
|
598 #ifdef ENABLE_IDENT
|
meillo@10
|
599 with_ident = " +ident";
|
meillo@0
|
600 #endif
|
meillo@0
|
601 #ifdef ENABLE_MSERVER
|
meillo@10
|
602 with_mserver = " +mserver";
|
meillo@0
|
603 #endif
|
meillo@0
|
604
|
meillo@10
|
605 printf("%s %s%s%s%s%s%s%s%s\n", PACKAGE, VERSION, with_resolver, with_smtp_server,
|
meillo@10
|
606 with_pop3, with_auth, with_maildir, with_ident, with_mserver);
|
meillo@0
|
607
|
meillo@10
|
608 exit(EXIT_SUCCESS);
|
meillo@10
|
609 }
|
meillo@0
|
610
|
meillo@10
|
611 /* initialize random generator */
|
meillo@10
|
612 srand(time(NULL));
|
meillo@10
|
613 /* ignore SIGPIPE signal */
|
meillo@10
|
614 signal(SIGPIPE, SIG_IGN);
|
meillo@0
|
615
|
meillo@73
|
616 /* close all possibly open file descriptors, except std{in,out,err} */
|
meillo@10
|
617 {
|
meillo@10
|
618 int i, max_fd = sysconf(_SC_OPEN_MAX);
|
meillo@0
|
619
|
meillo@10
|
620 if (max_fd <= 0)
|
meillo@10
|
621 max_fd = 64;
|
meillo@10
|
622 for (i = 3; i < max_fd; i++)
|
meillo@10
|
623 close(i);
|
meillo@10
|
624 }
|
meillo@0
|
625
|
meillo@10
|
626 init_conf();
|
meillo@0
|
627
|
meillo@10
|
628 /* if we are not privileged, and the config file was changed we
|
meillo@10
|
629 implicetely set the the run_as_user flag and give up all
|
meillo@10
|
630 privileges.
|
meillo@0
|
631
|
meillo@10
|
632 So it is possible for a user to run his own daemon without
|
meillo@10
|
633 breaking security.
|
meillo@10
|
634 */
|
meillo@10
|
635 if (strcmp(conf_file, CONF_FILE) != 0) {
|
meillo@10
|
636 if (conf.orig_uid != 0) {
|
meillo@10
|
637 conf.run_as_user = TRUE;
|
meillo@10
|
638 seteuid(conf.orig_uid);
|
meillo@10
|
639 setegid(conf.orig_gid);
|
meillo@10
|
640 setuid(conf.orig_uid);
|
meillo@10
|
641 setgid(conf.orig_gid);
|
meillo@10
|
642 }
|
meillo@10
|
643 }
|
meillo@0
|
644
|
meillo@10
|
645 read_conf(conf_file);
|
meillo@0
|
646
|
meillo@10
|
647 if (do_queue)
|
meillo@10
|
648 conf.do_queue = TRUE;
|
meillo@10
|
649 if (do_verbose)
|
meillo@10
|
650 conf.do_verbose = TRUE;
|
meillo@10
|
651 if (debug_level >= 0) /* if >= 0, it was given by argument */
|
meillo@10
|
652 conf.debug_level = debug_level;
|
meillo@0
|
653
|
meillo@46
|
654 /* It appears that changing to / ensures that we are never in
|
meillo@46
|
655 a directory which we cannot access. This situation could be
|
meillo@46
|
656 possible after changing identity.
|
meillo@46
|
657 Maybe we should only change to / if we not run as user, to
|
meillo@46
|
658 allow relative paths for log files in test setups for
|
meillo@46
|
659 instance.
|
meillo@46
|
660 */
|
meillo@10
|
661 chdir("/");
|
meillo@0
|
662
|
meillo@10
|
663 if (!conf.run_as_user) {
|
meillo@10
|
664 if (setgid(0) != 0) {
|
meillo@10
|
665 fprintf(stderr, "could not set gid to 0. Is the setuid bit set? : %s\n", strerror(errno));
|
meillo@10
|
666 exit(EXIT_FAILURE);
|
meillo@10
|
667 }
|
meillo@10
|
668 if (setuid(0) != 0) {
|
meillo@10
|
669 fprintf(stderr, "could not gain root privileges. Is the setuid bit set? : %s\n", strerror(errno));
|
meillo@10
|
670 exit(EXIT_FAILURE);
|
meillo@10
|
671 }
|
meillo@10
|
672 }
|
meillo@0
|
673
|
meillo@10
|
674 if (!logopen()) {
|
meillo@10
|
675 fprintf(stderr, "could not open log file\n");
|
meillo@10
|
676 exit(EXIT_FAILURE);
|
meillo@10
|
677 }
|
meillo@0
|
678
|
meillo@10
|
679 DEBUG(1) debugf("masqmail %s starting\n", VERSION);
|
meillo@0
|
680
|
meillo@10
|
681 DEBUG(5) {
|
meillo@10
|
682 gchar **str = argv;
|
meillo@10
|
683 debugf("args: \n");
|
meillo@10
|
684 while (*str) {
|
meillo@10
|
685 debugf("%s \n", *str);
|
meillo@10
|
686 str++;
|
meillo@10
|
687 }
|
meillo@10
|
688 }
|
meillo@10
|
689 DEBUG(5) debugf("queue_interval = %d\n", queue_interval);
|
meillo@0
|
690
|
meillo@10
|
691 if (f_address) {
|
meillo@10
|
692 return_path = create_address_qualified(f_address, TRUE, conf.host_name);
|
meillo@10
|
693 g_free(f_address);
|
meillo@10
|
694 if (!return_path) {
|
meillo@10
|
695 fprintf(stderr, "invalid RFC821 address: %s\n", f_address);
|
meillo@10
|
696 exit(EXIT_FAILURE);
|
meillo@10
|
697 }
|
meillo@10
|
698 }
|
meillo@10
|
699
|
meillo@10
|
700 if (do_get) {
|
meillo@0
|
701 #ifdef ENABLE_POP3
|
meillo@10
|
702 if ((mta_mode == MODE_NONE) || (mta_mode == MODE_RUNQUEUE)) {
|
meillo@10
|
703 set_identity(conf.orig_uid, "getting mail");
|
meillo@10
|
704 if (do_get_online) {
|
meillo@10
|
705 if (route_name != NULL) {
|
meillo@10
|
706 conf.online_detect = g_strdup("argument");
|
meillo@10
|
707 set_online_name(route_name);
|
meillo@10
|
708 }
|
meillo@10
|
709 get_online();
|
meillo@10
|
710 } else {
|
meillo@10
|
711 if (get_name)
|
meillo@10
|
712 get_from_name(get_name);
|
meillo@10
|
713 else
|
meillo@10
|
714 get_all();
|
meillo@10
|
715 }
|
meillo@10
|
716 } else {
|
meillo@10
|
717 logwrite(LOG_ALERT, "get (-g) only allowed alone or together with queue run (-q)\n");
|
meillo@10
|
718 }
|
meillo@10
|
719 #else
|
meillo@10
|
720 fprintf(stderr, "get (pop) support not compiled in\n");
|
meillo@10
|
721 #endif
|
meillo@10
|
722 }
|
meillo@0
|
723
|
meillo@10
|
724 switch (mta_mode) {
|
meillo@10
|
725 case MODE_DAEMON:
|
meillo@10
|
726 mode_daemon(do_listen, queue_interval, argv);
|
meillo@10
|
727 break;
|
meillo@10
|
728 case MODE_RUNQUEUE:
|
meillo@10
|
729 {
|
meillo@10
|
730 /* queue runs */
|
meillo@10
|
731 set_identity(conf.orig_uid, "queue run");
|
meillo@0
|
732
|
meillo@10
|
733 if (do_runq)
|
meillo@10
|
734 exit_code = queue_run() ? EXIT_SUCCESS : EXIT_FAILURE;
|
meillo@10
|
735
|
meillo@10
|
736 if (do_runq_online) {
|
meillo@10
|
737 if (route_name != NULL) {
|
meillo@10
|
738 conf.online_detect = g_strdup("argument");
|
meillo@10
|
739 set_online_name(route_name);
|
meillo@10
|
740 }
|
meillo@10
|
741 exit_code =
|
meillo@10
|
742 queue_run_online() ? EXIT_SUCCESS : EXIT_FAILURE;
|
meillo@10
|
743 }
|
meillo@10
|
744 }
|
meillo@10
|
745 break;
|
meillo@10
|
746 case MODE_GET_DAEMON:
|
meillo@10
|
747 #ifdef ENABLE_POP3
|
meillo@10
|
748 if (route_name != NULL) {
|
meillo@10
|
749 conf.online_detect = g_strdup("argument");
|
meillo@10
|
750 set_online_name(route_name);
|
meillo@10
|
751 }
|
meillo@10
|
752 mode_get_daemon(get_interval, argv);
|
meillo@10
|
753 #endif
|
meillo@10
|
754 break;
|
meillo@10
|
755
|
meillo@10
|
756 case MODE_SMTP:
|
meillo@10
|
757 #ifdef ENABLE_SMTP_SERVER
|
meillo@10
|
758 mode_smtp();
|
meillo@10
|
759 #else
|
meillo@10
|
760 fprintf(stderr, "smtp server support not compiled in\n");
|
meillo@10
|
761 #endif
|
meillo@10
|
762 break;
|
meillo@10
|
763
|
meillo@10
|
764 case MODE_LIST:
|
meillo@10
|
765 queue_list();
|
meillo@10
|
766 break;
|
meillo@10
|
767
|
meillo@10
|
768 case MODE_BI:
|
meillo@10
|
769 exit(EXIT_SUCCESS);
|
meillo@10
|
770 break; /* well... */
|
meillo@10
|
771
|
meillo@10
|
772 case MODE_MCMD:
|
meillo@10
|
773 if (strcmp(M_cmd, "rm") == 0) {
|
meillo@10
|
774 gboolean ok = FALSE;
|
meillo@10
|
775
|
meillo@10
|
776 set_euidgid(conf.mail_uid, conf.mail_gid, NULL, NULL);
|
meillo@10
|
777
|
meillo@10
|
778 if (is_privileged_user(conf.orig_uid)) {
|
meillo@10
|
779 for (; arg < argc; arg++) {
|
meillo@10
|
780 if (queue_delete(argv[arg]))
|
meillo@10
|
781 ok = TRUE;
|
meillo@10
|
782 }
|
meillo@10
|
783 } else {
|
meillo@10
|
784 struct passwd *pw = getpwuid(conf.orig_uid);
|
meillo@10
|
785 if (pw) {
|
meillo@10
|
786 for (; arg < argc; arg++) {
|
meillo@10
|
787 message *msg = msg_spool_read(argv[arg], FALSE);
|
meillo@10
|
788 #ifdef ENABLE_IDENT
|
meillo@10
|
789 if (((msg->received_host == NULL) && (msg->received_prot == PROT_LOCAL))
|
meillo@10
|
790 || is_in_netlist(msg->received_host, conf.ident_trusted_nets)) {
|
meillo@10
|
791 #else
|
meillo@10
|
792 if ((msg->received_host == NULL) && (msg->received_prot == PROT_LOCAL)) {
|
meillo@10
|
793 #endif
|
meillo@10
|
794 if (msg->ident) {
|
meillo@10
|
795 if (strcmp(pw->pw_name, msg->ident) == 0) {
|
meillo@10
|
796 if (queue_delete(argv[arg]))
|
meillo@10
|
797 ok = TRUE;
|
meillo@10
|
798 } else {
|
meillo@10
|
799 fprintf(stderr, "you do not own message id %s\n", argv[arg]);
|
meillo@10
|
800 }
|
meillo@10
|
801 } else
|
meillo@10
|
802 fprintf(stderr, "message %s does not have an ident.\n", argv[arg]);
|
meillo@10
|
803 } else {
|
meillo@10
|
804 fprintf(stderr, "message %s was not received locally or from a trusted network.\n", argv[arg]);
|
meillo@10
|
805 }
|
meillo@10
|
806 }
|
meillo@10
|
807 } else {
|
meillo@10
|
808 fprintf(stderr, "could not find a passwd entry for uid %d: %s\n", conf.orig_uid, strerror(errno));
|
meillo@10
|
809 }
|
meillo@10
|
810 }
|
meillo@10
|
811 exit(ok ? EXIT_SUCCESS : EXIT_FAILURE);
|
meillo@10
|
812 } else {
|
meillo@10
|
813 fprintf(stderr, "unknown command %s\n", M_cmd);
|
meillo@10
|
814 exit(EXIT_FAILURE);
|
meillo@10
|
815 }
|
meillo@10
|
816 break;
|
meillo@10
|
817
|
meillo@10
|
818 case MODE_ACCEPT:
|
meillo@10
|
819 {
|
meillo@107
|
820 guint accept_flags = (opt_t ? ACC_DEL_RCPTS | ACC_RCPT_FROM_HEAD : 0)
|
meillo@110
|
821 | (opt_i ? ACC_DOT_IGNORE : ACC_NODOT_RELAX);
|
meillo@10
|
822 mode_accept(return_path, full_sender_name, accept_flags, &(argv[arg]), argc - arg);
|
meillo@10
|
823 exit(exit_failure ? EXIT_FAILURE : EXIT_SUCCESS);
|
meillo@10
|
824 }
|
meillo@10
|
825 break;
|
meillo@10
|
826 case MODE_NONE:
|
meillo@10
|
827 break;
|
meillo@10
|
828 default:
|
meillo@10
|
829 fprintf(stderr, "unknown mode: %d\n", mta_mode);
|
meillo@10
|
830 break;
|
meillo@0
|
831 }
|
meillo@0
|
832
|
meillo@10
|
833 logclose();
|
meillo@0
|
834
|
meillo@10
|
835 exit(exit_code);
|
meillo@0
|
836 }
|