Mercurial > dovecot > core-2.2

annotate src/pop3/main.c @ 10136:ff200b8e4929 HEAD

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imap/pop3: Cleaned up initialization code.
author Timo Sirainen <tss@iki.fi>
date Thu, 22 Oct 2009 18:56:01 -0400
parents cb6dc691fa5a
children 7f0ccd367351
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rev   line source
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b9faf4db2a9f Updated copyright notices to include year 2009.
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1 /* Copyright (c) 2002-2009 Dovecot authors, see the included COPYING file */
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2
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3 #include "pop3-common.h"
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4 #include "ioloop.h"
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5 #include "buffer.h"
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6 #include "istream.h"
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7 #include "ostream.h"
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8 #include "base64.h"
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9 #include "restrict-access.h"
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10 #include "master-service.h"
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11 #include "master-login.h"
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12 #include "master-interface.h"
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13 #include "var-expand.h"
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14 #include "mail-storage-service.h"
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15
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16 #include <stdio.h>
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17 #include <stdlib.h>
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18 #include <unistd.h>
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20 #define IS_STANDALONE() \
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21 (getenv(MASTER_UID_ENV) == NULL)
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22
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23 static struct mail_storage_service_ctx *storage_service;
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24 static struct master_login *master_login = NULL;
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25
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26 void (*hook_client_created)(struct client **client) = NULL;
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27
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28 static void client_add_input(struct client *client, const buffer_t *buf)
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29 {
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30 struct ostream *output;
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31
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32 if (buf != NULL && buf->used > 0) {
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33 if (!i_stream_add_data(client->input, buf->data, buf->used))
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34 i_panic("Couldn't add client input to stream");
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35 }
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36
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37 output = client->output;
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38 o_stream_ref(output);
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39 o_stream_cork(output);
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40 if (!IS_STANDALONE())
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41 client_send_line(client, "+OK Logged in.");
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42 (void)client_handle_input(client);
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43 o_stream_uncork(output);
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44 o_stream_unref(&output);
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45 }
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46
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47 static int
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48 client_create_from_input(const struct mail_storage_service_input *input,
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49 int fd_in, int fd_out, const buffer_t *input_buf,
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50 const char **error_r)
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51 {
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52 struct mail_storage_service_user *user;
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53 struct mail_user *mail_user;
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54 struct client *client;
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55 const struct pop3_settings *set;
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56
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57 if (mail_storage_service_lookup_next(storage_service, input,
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58 &user, &mail_user, error_r) <= 0)
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59 return -1;
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60 set = mail_storage_service_user_get_set(user)[1];
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61
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62 restrict_access_allow_coredumps(TRUE);
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63 if (set->shutdown_clients)
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64 master_service_set_die_with_master(master_service, TRUE);
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65
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66 client = client_create(fd_in, fd_out, mail_user, user, set);
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67 T_BEGIN {
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68 client_add_input(client, input_buf);
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69 } T_END;
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70 return 0;
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71 }
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72
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73 static void main_stdio_run(void)
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74 {
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75 struct mail_storage_service_input input;
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76 buffer_t *input_buf;
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77 const char *value, *error, *input_base64;
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78
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79 memset(&input, 0, sizeof(input));
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80 input.module = input.service = "pop3";
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81 input.username = getenv("USER");
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82 if (input.username == NULL && IS_STANDALONE())
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83 input.username = getlogin();
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84 if (input.username == NULL)
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85 i_fatal("USER environment missing");
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86 if ((value = getenv("IP")) != NULL)
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87 net_addr2ip(value, &input.remote_ip);
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88 if ((value = getenv("LOCAL_IP")) != NULL)
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89 net_addr2ip(value, &input.local_ip);
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90
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91 input_base64 = getenv("CLIENT_INPUT");
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92 input_buf = input_base64 == NULL ? NULL :
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93 t_base64_decode_str(input_base64);
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94
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95 if (client_create_from_input(&input, STDIN_FILENO, STDOUT_FILENO,
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96 input_buf, &error) < 0)
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97 i_fatal("%s", error);
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98 }
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99
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100 static void
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101 login_client_connected(const struct master_login_client *client,
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102 const char *username, const char *const *extra_fields)
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103 {
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104 struct mail_storage_service_input input;
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105 const char *error;
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106 buffer_t input_buf;
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107
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108 memset(&input, 0, sizeof(input));
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109 input.module = input.service = "pop3";
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110 input.local_ip = client->auth_req.local_ip;
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111 input.remote_ip = client->auth_req.remote_ip;
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112 input.username = username;
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113 input.userdb_fields = extra_fields;
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114
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115 if (input.username == NULL) {
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116 i_error("login client: Username missing from auth reply");
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117 (void)close(client->fd);
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118 return;
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119 }
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120
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121 buffer_create_const_data(&input_buf, client->data,
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122 client->auth_req.data_size);
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123 if (client_create_from_input(&input, client->fd, client->fd,
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124 &input_buf, &error) < 0) {
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125 i_error("%s", error);
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126 (void)close(client->fd);
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127 }
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128 }
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129
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130 static void client_connected(const struct master_service_connection *conn)
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131 {
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132 if (master_login == NULL) {
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133 /* running standalone, we shouldn't even get here */
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134 (void)close(conn->fd);
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135 } else {
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136 master_login_add(master_login, conn->fd);
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137 }
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138 }
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139
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140 int main(int argc, char *argv[])
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141 {
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142 static const struct setting_parser_info *set_roots[] = {
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143 &pop3_setting_parser_info,
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144 NULL
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145 };
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146 enum master_service_flags service_flags = 0;
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147 enum mail_storage_service_flags storage_service_flags = 0;
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148
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149 if (IS_STANDALONE() && getuid() == 0 &&
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150 net_getpeername(1, NULL, NULL) == 0) {
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151 printf("-ERR pop3 binary must not be started from "
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152 "inetd, use pop3-login instead.\n");
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153 return 1;
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154 }
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155
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156 if (IS_STANDALONE()) {
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157 service_flags |= MASTER_SERVICE_FLAG_STANDALONE |
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158 MASTER_SERVICE_FLAG_STD_CLIENT;
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159 } else {
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160 storage_service_flags |=
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161 MAIL_STORAGE_SERVICE_FLAG_DISALLOW_ROOT;
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162 }
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163
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164 master_service = master_service_init("pop3", service_flags,
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165 &argc, &argv, NULL);
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166 if (master_getopt(master_service) > 0)
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167 return FATAL_DEFAULT;
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168 master_service_init_finish(master_service);
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169
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170 storage_service =
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171 mail_storage_service_init(master_service,
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172 set_roots, storage_service_flags);
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173
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174 /* fake that we're running, so we know if client was destroyed
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175 while handling its initial input */
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176 io_loop_set_running(current_ioloop);
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177
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178 if (IS_STANDALONE()) {
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179 T_BEGIN {
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180 main_stdio_run();
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181 } T_END;
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182 } else {
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183 master_login = master_login_init("auth-master",
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184 login_client_connected);
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185 io_loop_set_running(current_ioloop);
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186 }
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187
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188 if (io_loop_is_running(current_ioloop))
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189 master_service_run(master_service, client_connected);
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190 clients_destroy_all();
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191
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192 if (master_login != NULL)
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193 master_login_deinit(&master_login);
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194 mail_storage_service_deinit(&storage_service);
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195 master_service_deinit(&master_service);
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196 return 0;
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197 }