Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/imap/main.c @ 1498:5a247fb1673c HEAD

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Minor speedup
author Timo Sirainen <tss@iki.fi>
date Fri, 23 May 2003 17:39:45 +0300
parents 03dd87873a81
children 898a95426118
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1 /* Copyright (C) 2002 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 "ostream.h"
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6 #include "lib-signals.h"
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7 #include "rawlog.h"
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8 #include "restrict-access.h"
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9 #include "fd-close-on-exec.h"
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10 #include "process-title.h"
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11 #include "module-dir.h"
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12 #include "mail-storage.h"
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13 #include "commands.h"
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14
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15 #include <stdlib.h>
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16 #include <unistd.h>
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17 #include <syslog.h>
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18
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19 #define IS_STANDALONE() \
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20 (getenv("LOGGED_IN") == NULL && getenv("IMAPLOGINTAG") == NULL)
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21
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22 struct ioloop *ioloop;
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23 unsigned int max_custom_flag_length, mailbox_check_interval;
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24
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25 static struct module *modules;
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26 static char log_prefix[128]; /* syslog() needs this to be permanent */
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27
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28 static void sig_quit(int signo __attr_unused__)
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29 {
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30 io_loop_stop(ioloop);
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31 }
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32
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33 static void open_logfile(void)
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34 {
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35 const char *user;
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36
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37 user = getenv("USER");
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38 if (user == NULL) {
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39 if (IS_STANDALONE())
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40 user = getlogin();
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41 if (user == NULL)
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42 user = "??";
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43 }
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44 if (strlen(user) >= sizeof(log_prefix)-6) {
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45 /* quite a long user name, cut it */
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46 user = t_strndup(user, sizeof(log_prefix)-6-2);
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47 user = t_strconcat(user, "..", NULL);
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48 }
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49 i_snprintf(log_prefix, sizeof(log_prefix), "imap(%s)", user);
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50
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51 if (getenv("USE_SYSLOG") != NULL)
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52 i_set_failure_syslog(log_prefix, LOG_NDELAY, LOG_MAIL);
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53 else {
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54 /* log to file or stderr */
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55 i_set_failure_file(getenv("LOGFILE"), log_prefix);
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56 }
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57
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58 if (getenv("INFOLOGFILE") != NULL)
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59 i_set_info_file(getenv("INFOLOGFILE"));
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60
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61 i_set_failure_timestamp_format(getenv("LOGSTAMP"));
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62 }
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63
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64 static void drop_privileges(void)
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65 {
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66 /* Log file or syslog opening probably requires roots */
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67 open_logfile();
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68
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69 restrict_access_by_env(!IS_STANDALONE());
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70 }
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71
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72 static void main_init(void)
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73 {
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74 struct client *client;
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75 struct mail_storage *storage;
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76 const char *user, *mail, *str;
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77 int hin, hout;
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78
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79 lib_init_signals(sig_quit);
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80
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81 user = getenv("USER");
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82 if (user == NULL) {
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83 if (IS_STANDALONE())
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84 user = getlogin();
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85 if (user == NULL)
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86 i_fatal("USER environment missing");
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87 }
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88
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89 hin = 0; hout = 1;
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90 rawlog_open(&hin, &hout);
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91
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92 mail_storage_init();
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93 mail_storage_register_all();
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94 clients_init();
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95 commands_init();
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96
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97 modules = getenv("MODULE_DIR") == NULL ? NULL :
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98 module_dir_load(getenv("MODULE_DIR"));
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99
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100 mail = getenv("MAIL");
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101 if (mail == NULL) {
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102 /* support also maildir-specific environment */
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103 mail = getenv("MAILDIR");
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104 if (mail != NULL)
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105 mail = t_strconcat("maildir:", mail, NULL);
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106 }
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107
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108 storage = mail_storage_create_with_data(mail, user);
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109 if (storage == NULL) {
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110 /* failed */
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111 if (mail != NULL && *mail != '\0')
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112 i_fatal("Failed to create storage with data: %s", mail);
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113 else {
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114 const char *home;
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115
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116 home = getenv("HOME");
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117 if (home == NULL) home = "not set";
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118
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119 i_fatal("MAIL environment missing and "
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120 "autodetection failed (home %s)", home);
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121 }
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122 }
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123
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124 str = getenv("MAIL_MAX_FLAG_LENGTH");
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125 max_custom_flag_length = str != NULL ?
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126 (unsigned int)strtoul(str, NULL, 10) :
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127 DEFAULT_MAX_CUSTOM_FLAG_LENGTH;
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128
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129 str = getenv("MAILBOX_CHECK_INTERVAL");
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130 mailbox_check_interval = str == NULL ? 0 :
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131 (unsigned int)strtoul(str, NULL, 10);
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132
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133 client = client_create(hin, hout, storage);
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134
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135 o_stream_cork(client->output);
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136 if (IS_STANDALONE()) {
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137 client_send_line(client, t_strconcat(
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138 "* PREAUTH [CAPABILITY "CAPABILITY_STRING"] "
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139 "Logged in as ", user, NULL));
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140 } else if (getenv("IMAPLOGINTAG") != NULL) {
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141 /* Support for mailfront */
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142 client_send_line(client, t_strconcat(getenv("IMAPLOGINTAG"),
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143 " OK Logged in.", NULL));
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144 }
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145 o_stream_flush(client->output);
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146 }
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147
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148 static void main_deinit(void)
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149 {
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150 /* warn about being killed because of some signal, except SIGINT (^C)
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151 which is too common at least while testing :) */
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152 if (lib_signal_kill != 0 && lib_signal_kill != 2)
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153 i_warning("Killed with signal %d", lib_signal_kill);
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154
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155 module_dir_unload(modules);
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156
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157 commands_deinit();
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158 clients_deinit();
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159 mail_storage_deinit();
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160
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161 closelog();
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162 }
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163
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164 int main(int argc __attr_unused__, char *argv[], char *envp[])
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165 {
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166 #ifdef DEBUG
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167 if (getenv("LOGGED_IN") != NULL)
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168 fd_debug_verify_leaks(3, 1024);
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169 #endif
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170 /* NOTE: we start rooted, so keep the code minimal until
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171 restrict_access_by_env() is called */
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172 lib_init();
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173 drop_privileges();
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174
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175 process_title_init(argv, envp);
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176 ioloop = io_loop_create(system_pool);
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177
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178 main_init();
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179 io_loop_run(ioloop);
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180 main_deinit();
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181
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182 io_loop_destroy(ioloop);
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183 lib_deinit();
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184
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185 return 0;
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186 }