Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/imap/main.c @ 3204:c8fffa286b6a HEAD

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Renamed oe6-fetch-no-newmail workaround to delay-newmail and changed it to work more like the name says: only newmail notifications are skipped and not only for FETCH command.
author Timo Sirainen <tss@iki.fi>
date Mon, 14 Mar 2005 23:17:58 +0200
parents de1b904c4df2
children 923ff19873d4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 "network.h"
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6 #include "ostream.h"
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7 #include "str.h"
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8 #include "lib-signals.h"
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9 #include "restrict-access.h"
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10 #include "fd-close-on-exec.h"
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11 #include "process-title.h"
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12 #include "randgen.h"
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13 #include "module-dir.h"
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14 #include "mail-storage.h"
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15 #include "commands.h"
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16 #include "namespace.h"
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17
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18 #include <stdio.h>
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19 #include <stdlib.h>
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20 #include <unistd.h>
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21 #include <syslog.h>
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22
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23 #define IS_STANDALONE() \
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24 (getenv("LOGGED_IN") == NULL && getenv("IMAPLOGINTAG") == NULL)
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26 struct client_workaround_list {
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27 const char *name;
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28 enum client_workarounds num;
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29 };
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30
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31 struct client_workaround_list client_workaround_list[] = {
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32 { "delay-newmail", WORKAROUND_DELAY_NEWMAIL },
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33 { "outlook-idle", WORKAROUND_OUTLOOK_IDLE },
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34 { "netscape-eoh", WORKAROUND_NETSCAPE_EOH },
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35 { "tb-negative-fetch", WORKAROUND_TB_NEGATIVE_FETCH },
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36 { NULL, 0 }
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37 };
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38
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39 struct ioloop *ioloop;
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40 unsigned int max_keyword_length;
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41 unsigned int imap_max_line_length;
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42 enum client_workarounds client_workarounds = 0;
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43
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44 static struct module *modules;
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45 static char log_prefix[128]; /* syslog() needs this to be permanent */
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46 static pool_t namespace_pool;
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47
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48 void (*hook_mail_storage_created)(struct mail_storage **storage) = NULL;
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49 void (*hook_client_created)(struct client **client) = NULL;
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50
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51 string_t *capability_string;
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52
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53 static void sig_quit(int signo __attr_unused__)
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54 {
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55 io_loop_stop(ioloop);
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56 }
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57
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58 static void parse_workarounds(void)
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59 {
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60 struct client_workaround_list *list;
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61 const char *env, *const *str;
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62
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63 env = getenv("IMAP_CLIENT_WORKAROUNDS");
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64 if (env == NULL)
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65 return;
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66
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67 for (str = t_strsplit_spaces(env, " "); *str != NULL; str++) {
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68 list = client_workaround_list;
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69 for (; list->name != NULL; list++) {
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70 if (strcasecmp(*str, list->name) == 0) {
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71 client_workarounds |= list->num;
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72 break;
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73 }
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74 }
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75 if (list->name == NULL)
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76 i_fatal("Unknown client workaround: %s", *str);
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77 }
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78 }
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79
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80 static void open_logfile(void)
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81 {
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82 const char *user;
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83
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84 if (getenv("LOG_TO_MASTER") != NULL) {
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85 i_set_failure_internal();
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86 return;
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87 }
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88
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89 user = getenv("USER");
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90 if (user == NULL) {
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91 if (IS_STANDALONE())
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92 user = getlogin();
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93 if (user == NULL)
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94 user = "??";
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95 }
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96 if (strlen(user) >= sizeof(log_prefix)-6) {
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97 /* quite a long user name, cut it */
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98 user = t_strndup(user, sizeof(log_prefix)-6-2);
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99 user = t_strconcat(user, "..", NULL);
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100 }
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101 i_snprintf(log_prefix, sizeof(log_prefix), "imap(%s)", user);
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102
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103 if (getenv("USE_SYSLOG") != NULL)
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104 i_set_failure_syslog(log_prefix, LOG_NDELAY, LOG_MAIL);
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105 else {
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106 /* log to file or stderr */
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107 i_set_failure_file(getenv("LOGFILE"), log_prefix);
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108 }
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109
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110 if (getenv("INFOLOGFILE") != NULL)
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111 i_set_info_file(getenv("INFOLOGFILE"));
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112
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113 i_set_failure_timestamp_format(getenv("LOGSTAMP"));
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114 }
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115
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116 static void drop_privileges(void)
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117 {
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118 /* Log file or syslog opening probably requires roots */
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119 open_logfile();
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120
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121 /* Most likely needed. Have to open /dev/urandom before possible
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122 chrooting. */
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123 random_init();
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124
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125 restrict_access_by_env(!IS_STANDALONE());
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126 }
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127
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128 static void main_init(void)
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129 {
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130 struct client *client;
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131 const char *user, *str;
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132
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133 lib_init_signals(sig_quit);
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134
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135 user = getenv("USER");
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136 if (user == NULL) {
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137 if (IS_STANDALONE())
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138 user = getlogin();
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139 if (user == NULL)
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140 i_fatal("USER environment missing");
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141 }
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142
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143 if (getenv("DEBUG") != NULL) {
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144 i_info("Effective uid=%s, gid=%s",
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145 dec2str(geteuid()), dec2str(getegid()));
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146 }
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147
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148 capability_string = str_new(default_pool, sizeof(CAPABILITY_STRING)+32);
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149 str_append(capability_string, CAPABILITY_STRING);
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150
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151 mail_storage_init();
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152 mail_storage_register_all();
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153 clients_init();
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154 commands_init();
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155
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156 modules = getenv("MODULE_DIR") == NULL ? NULL :
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157 module_dir_load(getenv("MODULE_DIR"), TRUE);
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158
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159 str = getenv("IMAP_MAX_LINE_LENGTH");
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160 imap_max_line_length = str != NULL ?
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161 (unsigned int)strtoul(str, NULL, 10) :
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162 DEFAULT_IMAP_MAX_LINE_LENGTH;
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163
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164 str = getenv("MAIL_MAX_KEYWORD_LENGTH");
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165 max_keyword_length = str != NULL ?
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166 (unsigned int)strtoul(str, NULL, 10) :
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167 DEFAULT_MAX_KEYWORD_LENGTH;
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168
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169 parse_workarounds();
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170
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171 namespace_pool = pool_alloconly_create("namespaces", 1024);
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172 client = client_create(0, 1, namespace_init(namespace_pool, user));
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173
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174 o_stream_cork(client->output);
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175 if (IS_STANDALONE()) {
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176 client_send_line(client, t_strconcat(
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177 "* PREAUTH [CAPABILITY "CAPABILITY_STRING"] "
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178 "Logged in as ", user, NULL));
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179 } else if (getenv("IMAPLOGINTAG") != NULL) {
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180 /* Support for mailfront */
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181 client_send_line(client, t_strconcat(getenv("IMAPLOGINTAG"),
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182 " OK Logged in.", NULL));
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183 }
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184 o_stream_uncork(client->output);
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185 }
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186
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187 static void main_deinit(void)
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188 {
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189 /* warn about being killed because of some signal, except SIGINT (^C)
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190 which is too common at least while testing :) */
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191 if (lib_signal_kill != 0 && lib_signal_kill != 2)
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192 i_warning("Killed with signal %d", lib_signal_kill);
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193
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194 module_dir_unload(modules);
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195
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196 commands_deinit();
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197 clients_deinit();
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198 mail_storage_deinit();
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199 random_deinit();
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200 pool_unref(namespace_pool);
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201
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202 str_free(capability_string);
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203
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204 closelog();
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205 }
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206
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207 int main(int argc __attr_unused__, char *argv[], char *envp[])
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208 {
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209 #ifdef DEBUG
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210 if (getenv("LOGGED_IN") != NULL && getenv("GDB") == NULL)
738
1b0205fc4153 DEBUG: We shouldn't verify the fds when running in pre-auth mode (breaks
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diff changeset
211 fd_debug_verify_leaks(3, 1024);
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212 #endif
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213 if (IS_STANDALONE() && getuid() == 0 &&
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214 net_getpeername(1, NULL, NULL) == 0) {
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215 printf("* BAD [ALERT] imap binary must not be started from "
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216 "inetd, use imap-login instead.\n");
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217 return 1;
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218 }
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219
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220 /* NOTE: we start rooted, so keep the code minimal until
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221 restrict_access_by_env() is called */
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222 lib_init();
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diff changeset
223 drop_privileges();
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224
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ad4292a30b1d Set process title for rawlog process.
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diff changeset
225 process_title_init(argv, envp);
389
60040a9d243f ioloop_create() takes now pool-parameter. io_buffer_create_mmaped() takes
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diff changeset
226 ioloop = io_loop_create(system_pool);
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227
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228 main_init();
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229 io_loop_run(ioloop);
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230 main_deinit();
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231
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232 io_loop_destroy(ioloop);
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233 lib_deinit();
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234
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235 return 0;
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236 }