Mercurial > dovecot > core-2.2

annotate src/pop3/main.c @ 1646:a7c742b940e5 HEAD

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Added pop3 hooks
author Timo Sirainen <tss@iki.fi>
date Sat, 26 Jul 2003 21:29:02 +0300
parents 124a42f0be3a
children 193daadc3924
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1 /* Copyright (C) 2002-2003 Timo Sirainen */
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2
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3 #include "common.h"
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4 #include "ioloop.h"
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5 #include "lib-signals.h"
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6 #include "restrict-access.h"
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7 #include "fd-close-on-exec.h"
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8 #include "process-title.h"
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9 #include "randgen.h"
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10 #include "module-dir.h"
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11 #include "mail-storage.h"
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12
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13 #include <stdlib.h>
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14 #include <syslog.h>
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15
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16 #define IS_STANDALONE() \
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17 (getenv("LOGGED_IN") == NULL)
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18
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19 struct ioloop *ioloop;
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20
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21 void (*hook_mail_storage_created)(struct mail_storage **storage) = NULL;
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22 void (*hook_client_created)(struct client **client) = NULL;
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23
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24 static struct module *modules;
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25 static char log_prefix[128]; /* syslog() needs this to be permanent */
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26
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27 static void sig_quit(int signo __attr_unused__)
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28 {
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29 io_loop_stop(ioloop);
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30 }
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31
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32 static void open_logfile(void)
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33 {
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34 const char *user;
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35
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36 user = getenv("USER");
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37 if (user == NULL) user = "??";
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38 if (strlen(user) >= sizeof(log_prefix)-6) {
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39 /* quite a long user name, cut it */
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40 user = t_strndup(user, sizeof(log_prefix)-6-2);
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41 user = t_strconcat(user, "..", NULL);
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42 }
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43 i_snprintf(log_prefix, sizeof(log_prefix), "pop3(%s)", user);
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44
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45 if (getenv("USE_SYSLOG") != NULL)
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46 i_set_failure_syslog(log_prefix, LOG_NDELAY, LOG_MAIL);
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47 else {
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48 /* log to file or stderr */
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49 i_set_failure_file(getenv("LOGFILE"), log_prefix);
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50 }
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51
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52 if (getenv("INFOLOGFILE") != NULL)
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53 i_set_info_file(getenv("INFOLOGFILE"));
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54
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55 i_set_failure_timestamp_format(getenv("LOGSTAMP"));
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56 }
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57
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58 static void drop_privileges(void)
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59 {
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60 /* Log file or syslog opening probably requires roots */
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61 open_logfile();
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62
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63 /* Most likely needed. Have to open /dev/urandom before possible
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64 chrooting. */
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65 random_init();
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66
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67 restrict_access_by_env(!IS_STANDALONE());
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68 }
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69
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70 static int main_init(void)
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71 {
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72 struct mail_storage *storage;
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73 const char *mail;
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74
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75 lib_init_signals(sig_quit);
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76
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77 if (getenv("USER") == NULL)
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78 i_fatal("USER environment missing");
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79
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80 mail_storage_register_all();
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81 clients_init();
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82
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83 modules = getenv("MODULE_DIR") == NULL ? NULL :
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84 module_dir_load(getenv("MODULE_DIR"));
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85
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86 mail = getenv("MAIL");
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87 if (mail == NULL) {
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88 /* support also maildir-specific environment */
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89 mail = getenv("MAILDIR");
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90 if (mail != NULL)
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91 mail = t_strconcat("maildir:", mail, NULL);
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92 }
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93
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94 storage = mail_storage_create_with_data(mail, getenv("USER"));
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95 if (storage == NULL) {
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96 /* failed */
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97 if (mail != NULL && *mail != '\0')
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98 i_fatal("Failed to create storage with data: %s", mail);
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99 else {
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100 const char *home;
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101
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102 home = getenv("HOME");
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103 if (home == NULL) home = "not set";
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104
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105 i_fatal("MAIL environment missing and "
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106 "autodetection failed (home %s)", home);
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107 }
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108 }
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109
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110 if (hook_mail_storage_created != NULL)
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111 hook_mail_storage_created(&storage);
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112
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113 return client_create(0, 1, storage) != NULL;
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114 }
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115
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116 static void main_deinit(void)
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117 {
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118 /* warn about being killed because of some signal, except SIGINT (^C)
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119 which is too common at least while testing :) */
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120 if (lib_signal_kill != 0 && lib_signal_kill != 2)
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121 i_warning("Killed with signal %d", lib_signal_kill);
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122
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123 module_dir_unload(modules);
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124
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125 clients_deinit();
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126 mail_storage_deinit();
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127 random_deinit();
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128
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129 closelog();
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130 }
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131
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132 int main(int argc __attr_unused__, char *argv[], char *envp[])
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133 {
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134 #ifdef DEBUG
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135 if (getenv("LOGGED_IN") != NULL)
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136 fd_debug_verify_leaks(3, 1024);
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137 #endif
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138 /* NOTE: we start rooted, so keep the code minimal until
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139 restrict_access_by_env() is called */
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140 lib_init();
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141 drop_privileges();
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142
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143 process_title_init(argv, envp);
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144 ioloop = io_loop_create(system_pool);
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145
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146 if (main_init())
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147 io_loop_run(ioloop);
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148 main_deinit();
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149
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150 io_loop_destroy(ioloop);
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151 lib_deinit();
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152
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153 return 0;
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154 }