Mercurial > dovecot > core-2.2
annotate src/pop3/main.c @ 11011:110ef59372cd HEAD
pop3: Don't crash if INBOX can't be opened.
author | Timo Sirainen <tss@iki.fi> |
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date | Sat, 27 Mar 2010 05:05:12 +0200 |
parents | 93be85bb9db8 |
children | 2e08ce368bc0 |
rev | line source |
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Updated copyright notices to include year 2010.
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1 /* Copyright (c) 2002-2010 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 "abspath.h" |
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9 #include "base64.h" |
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10 #include "str.h" |
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11 #include "process-title.h" |
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12 #include "restrict-access.h" |
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13 #include "master-service.h" |
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14 #include "master-login.h" |
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16 #include "var-expand.h" |
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17 #include "mail-user.h" |
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18 #include "mail-storage-service.h" |
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19 |
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20 #include <stdio.h> |
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21 #include <stdlib.h> |
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22 #include <unistd.h> |
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23 |
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24 #define IS_STANDALONE() \ |
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25 (getenv(MASTER_UID_ENV) == NULL) |
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26 |
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27 static bool verbose_proctitle = FALSE; |
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28 static struct mail_storage_service_ctx *storage_service; |
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29 static struct master_login *master_login = NULL; |
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30 |
1646 | 31 void (*hook_client_created)(struct client **client) = NULL; |
32 | |
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33 void pop3_refresh_proctitle(void) |
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34 { |
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35 struct client *client; |
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36 string_t *title = t_str_new(128); |
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37 |
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38 if (!verbose_proctitle) |
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39 return; |
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40 |
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41 str_append_c(title, '['); |
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42 switch (pop3_client_count) { |
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43 case 0: |
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44 str_append(title, "idling"); |
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45 break; |
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46 case 1: |
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47 client = pop3_clients; |
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48 str_append(title, client->user->username); |
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49 if (client->user->remote_ip != NULL) { |
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50 str_append_c(title, ' '); |
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51 str_append(title, net_ip2addr(client->user->remote_ip)); |
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52 } |
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53 break; |
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54 default: |
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55 str_printfa(title, "%u connections", pop3_client_count); |
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56 break; |
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57 } |
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58 str_append_c(title, ']'); |
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59 process_title_set(str_c(title)); |
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60 } |
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61 |
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62 static void pop3_die(void) |
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63 { |
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64 /* do nothing. pop3 connections typically die pretty quick anyway. */ |
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65 } |
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66 |
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67 static void client_add_input(struct client *client, const buffer_t *buf) |
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68 { |
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69 struct ostream *output; |
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70 |
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71 if (buf != NULL && buf->used > 0) { |
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72 if (!i_stream_add_data(client->input, buf->data, buf->used)) |
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73 i_panic("Couldn't add client input to stream"); |
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74 } |
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75 |
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76 output = client->output; |
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77 o_stream_ref(output); |
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78 o_stream_cork(output); |
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79 if (!IS_STANDALONE()) |
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80 client_send_line(client, "+OK Logged in."); |
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81 (void)client_handle_input(client); |
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82 o_stream_uncork(output); |
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83 o_stream_unref(&output); |
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84 } |
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85 |
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86 static int |
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87 client_create_from_input(const struct mail_storage_service_input *input, |
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88 int fd_in, int fd_out, const buffer_t *input_buf, |
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89 const char **error_r) |
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90 { |
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91 struct mail_storage_service_user *user; |
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92 struct mail_user *mail_user; |
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93 struct client *client; |
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94 const struct pop3_settings *set; |
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95 |
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96 if (mail_storage_service_lookup_next(storage_service, input, |
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97 &user, &mail_user, error_r) <= 0) |
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98 return -1; |
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99 restrict_access_allow_coredumps(TRUE); |
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100 |
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101 set = mail_storage_service_user_get_set(user)[1]; |
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102 if (set->verbose_proctitle) |
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103 verbose_proctitle = TRUE; |
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104 |
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105 client = client_create(fd_in, fd_out, mail_user, user, set); |
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106 if (client != NULL) T_BEGIN { |
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107 client_add_input(client, input_buf); |
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108 } T_END; |
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109 return 0; |
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110 } |
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111 |
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112 static void main_stdio_run(const char *username) |
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113 { |
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114 struct mail_storage_service_input input; |
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115 buffer_t *input_buf; |
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116 const char *value, *error, *input_base64; |
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117 |
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118 memset(&input, 0, sizeof(input)); |
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119 input.module = input.service = "pop3"; |
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120 input.username = username != NULL ? username : getenv("USER"); |
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121 if (input.username == NULL && IS_STANDALONE()) |
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122 input.username = getlogin(); |
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123 if (input.username == NULL) |
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124 i_fatal("USER environment missing"); |
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125 if ((value = getenv("IP")) != NULL) |
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126 net_addr2ip(value, &input.remote_ip); |
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127 if ((value = getenv("LOCAL_IP")) != NULL) |
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128 net_addr2ip(value, &input.local_ip); |
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129 |
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130 input_base64 = getenv("CLIENT_INPUT"); |
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131 input_buf = input_base64 == NULL ? NULL : |
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132 t_base64_decode_str(input_base64); |
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133 |
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134 if (client_create_from_input(&input, STDIN_FILENO, STDOUT_FILENO, |
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135 input_buf, &error) < 0) |
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136 i_fatal("%s", error); |
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137 } |
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138 |
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139 static void |
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140 login_client_connected(const struct master_login_client *client, |
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141 const char *username, const char *const *extra_fields) |
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142 { |
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143 struct mail_storage_service_input input; |
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144 const char *error; |
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145 buffer_t input_buf; |
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146 |
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147 memset(&input, 0, sizeof(input)); |
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148 input.module = input.service = "pop3"; |
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149 input.local_ip = client->auth_req.local_ip; |
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150 input.remote_ip = client->auth_req.remote_ip; |
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151 input.username = username; |
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152 input.userdb_fields = extra_fields; |
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153 |
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154 buffer_create_const_data(&input_buf, client->data, |
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155 client->auth_req.data_size); |
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156 if (client_create_from_input(&input, client->fd, client->fd, |
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157 &input_buf, &error) < 0) { |
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158 i_error("%s", error); |
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159 (void)close(client->fd); |
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160 master_service_client_connection_destroyed(master_service); |
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161 } |
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162 } |
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163 |
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164 static void client_connected(const struct master_service_connection *conn) |
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165 { |
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166 if (master_login == NULL) { |
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167 /* running standalone, we shouldn't even get here */ |
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168 (void)close(conn->fd); |
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169 } else { |
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170 master_login_add(master_login, conn->fd); |
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171 } |
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172 } |
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173 |
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174 int main(int argc, char *argv[]) |
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175 { |
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176 static const struct setting_parser_info *set_roots[] = { |
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177 &pop3_setting_parser_info, |
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178 NULL |
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179 }; |
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180 enum master_service_flags service_flags = 0; |
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181 enum mail_storage_service_flags storage_service_flags = 0; |
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182 const char *postlogin_socket_path, *username = NULL; |
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183 int c; |
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184 |
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185 if (IS_STANDALONE() && getuid() == 0 && |
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186 net_getpeername(1, NULL, NULL) == 0) { |
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187 printf("-ERR pop3 binary must not be started from " |
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188 "inetd, use pop3-login instead.\n"); |
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189 return 1; |
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190 } |
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191 |
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192 if (IS_STANDALONE()) { |
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193 service_flags |= MASTER_SERVICE_FLAG_STANDALONE | |
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194 MASTER_SERVICE_FLAG_STD_CLIENT; |
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195 } else { |
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196 service_flags |= MASTER_SERVICE_FLAG_KEEP_CONFIG_OPEN; |
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197 storage_service_flags |= |
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198 MAIL_STORAGE_SERVICE_FLAG_DISALLOW_ROOT; |
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199 } |
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200 |
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201 master_service = master_service_init("pop3", service_flags, |
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202 &argc, &argv, "u:"); |
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203 while ((c = master_getopt(master_service)) > 0) { |
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204 switch (c) { |
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205 case 'u': |
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206 storage_service_flags |= |
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207 MAIL_STORAGE_SERVICE_FLAG_USERDB_LOOKUP; |
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208 username = optarg; |
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209 break; |
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210 default: |
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211 return FATAL_DEFAULT; |
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212 } |
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213 } |
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214 postlogin_socket_path = argv[1] == NULL ? NULL : t_abspath(argv[1]); |
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215 |
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216 master_service_init_finish(master_service); |
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217 master_service_set_die_callback(master_service, pop3_die); |
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218 |
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219 storage_service = |
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220 mail_storage_service_init(master_service, |
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221 set_roots, storage_service_flags); |
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222 |
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223 /* fake that we're running, so we know if client was destroyed |
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224 while handling its initial input */ |
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225 io_loop_set_running(current_ioloop); |
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226 |
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227 if (IS_STANDALONE()) { |
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228 T_BEGIN { |
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93be85bb9db8
imap, pop3: Added -u <username> parameter to do userdb lookup.
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229 main_stdio_run(username); |
10101
4fe8c4382712
Redesigned how login process passes connections to mail processes and changed related APIs.
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230 } T_END; |
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Redesigned how login process passes connections to mail processes and changed related APIs.
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231 } else { |
10194
40d8df2b4111
imap, pop3: Connection counting fixes.
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232 master_login = master_login_init(master_service, "auth-master", |
10459
e9cbc461c525
imap, pop3: Added back ability to run post-login scripts.
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233 postlogin_socket_path, |
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Redesigned how login process passes connections to mail processes and changed related APIs.
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parents:
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234 login_client_connected); |
4fe8c4382712
Redesigned how login process passes connections to mail processes and changed related APIs.
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parents:
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235 io_loop_set_running(current_ioloop); |
9080
e560b92ed763
imap and pop3 now use mail-storage-service API.
Timo Sirainen <tss@iki.fi>
parents:
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diff
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236 } |
e560b92ed763
imap and pop3 now use mail-storage-service API.
Timo Sirainen <tss@iki.fi>
parents:
9059
diff
changeset
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237 |
10101
4fe8c4382712
Redesigned how login process passes connections to mail processes and changed related APIs.
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parents:
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238 if (io_loop_is_running(current_ioloop)) |
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Redesigned how login process passes connections to mail processes and changed related APIs.
Timo Sirainen <tss@iki.fi>
parents:
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239 master_service_run(master_service, client_connected); |
4fe8c4382712
Redesigned how login process passes connections to mail processes and changed related APIs.
Timo Sirainen <tss@iki.fi>
parents:
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240 clients_destroy_all(); |
1043
cacabd33c68a
Initial code for POP3 server. RETR isn't working right yet, there's some
Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
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241 |
10101
4fe8c4382712
Redesigned how login process passes connections to mail processes and changed related APIs.
Timo Sirainen <tss@iki.fi>
parents:
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changeset
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242 if (master_login != NULL) |
4fe8c4382712
Redesigned how login process passes connections to mail processes and changed related APIs.
Timo Sirainen <tss@iki.fi>
parents:
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243 master_login_deinit(&master_login); |
10130
d1384c2b08e5
Merged single and multi mail_storage_service_*() functions.
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10120
diff
changeset
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244 mail_storage_service_deinit(&storage_service); |
9348
0c587f108916
lib-master has now a global master_service variable that all binaries use.
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parents:
9263
diff
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245 master_service_deinit(&master_service); |
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cacabd33c68a
Initial code for POP3 server. RETR isn't working right yet, there's some
Timo Sirainen <tss@iki.fi>
parents:
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246 return 0; |
cacabd33c68a
Initial code for POP3 server. RETR isn't working right yet, there's some
Timo Sirainen <tss@iki.fi>
parents:
diff
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247 } |