Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/lib-auth/auth-client.c @ 9638:9a50a9dc905f HEAD

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dotlocks: Refresh current time after having waited for a lock.
author Timo Sirainen <tss@iki.fi>
date Thu, 20 Jan 2011 23:17:05 +0200
parents 00cd9aacd03c
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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00cd9aacd03c Updated copyright notices to include year 2010.
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1 /* Copyright (c) 2003-2010 Dovecot authors, see the included COPYING file */
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2
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3 #include "lib.h"
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4 #include "buffer.h"
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5 #include "ioloop.h"
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6 #include "hash.h"
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7 #include "auth-client.h"
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8 #include "auth-server-connection.h"
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9
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10 #include <dirent.h>
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11 #include <sys/stat.h>
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12
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13 #define AUTH_CLIENT_SOCKET_MAX_WAIT_TIME 10
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14
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15 struct auth_client *auth_client_new(unsigned int client_pid)
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16 {
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17 struct auth_client *client;
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18
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19 client = i_new(struct auth_client, 1);
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20 client->pid = client_pid;
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21 client->available_auth_mechs = buffer_create_dynamic(default_pool, 128);
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22
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23 auth_client_connect_missing_servers(client);
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24 return client;
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25 }
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26
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27 void auth_client_free(struct auth_client **_client)
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28 {
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29 struct auth_client *client = *_client;
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30 struct auth_server_connection *next;
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31 struct auth_mech_desc *mech;
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32 size_t i, size;
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33
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34 *_client = NULL;
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35
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36 mech = buffer_get_modifiable_data(client->available_auth_mechs, &size);
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37 size /= sizeof(*mech);
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38 for (i = 0; i < size; i++)
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39 i_free(mech[i].name);
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40 buffer_free(&client->available_auth_mechs);
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41
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42 while (client->connections != NULL) {
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43 next = client->connections->next;
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44 auth_server_connection_destroy(&client->connections, FALSE);
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45 client->connections = next;
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46 }
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47
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48 if (client->to_reconnect != NULL)
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49 timeout_remove(&client->to_reconnect);
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50 i_free(client);
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51 }
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52
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53 void auth_client_reconnect(struct auth_client *client)
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54 {
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55 struct auth_server_connection *next;
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56
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57 while (client->connections != NULL) {
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58 next = client->connections->next;
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59 auth_server_connection_destroy(&client->connections, FALSE);
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60 client->connections = next;
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61 }
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62
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63 auth_client_connect_missing_servers(client);
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64 }
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65
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66 const struct auth_mech_desc *
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67 auth_client_get_available_mechs(struct auth_client *client,
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68 unsigned int *mech_count)
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69 {
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70 const struct auth_mech_desc *mechs;
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71 size_t size;
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72
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73 mechs = buffer_get_data(client->available_auth_mechs, &size);
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74 *mech_count = size / sizeof(*mechs);
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75 return mechs;
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76 }
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78 const struct auth_mech_desc *
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79 auth_client_find_mech(struct auth_client *client, const char *name)
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80 {
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81 const struct auth_mech_desc *mech;
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82 size_t i, size;
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83
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84 mech = buffer_get_data(client->available_auth_mechs, &size);
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85 size /= sizeof(*mech);
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86 for (i = 0; i < size; i++) {
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87 if (strcasecmp(mech[i].name, name) == 0)
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88 return &mech[i];
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89 }
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90
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91 return NULL;
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92 }
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93
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94 bool auth_client_reserve_connection(struct auth_client *client,
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95 const char *mech,
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96 struct auth_connect_id *id_r)
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97 {
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98 struct auth_server_connection *conn;
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99 const char *error;
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100
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101 conn = auth_server_connection_find_mech(client, mech, &error);
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102 if (conn == NULL)
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103 return FALSE;
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104
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105 id_r->server_pid = conn->server_pid;
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106 id_r->connect_uid = conn->connect_uid;
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107
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108 return TRUE;
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109 }
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110
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111 bool auth_client_is_connected(struct auth_client *client)
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112 {
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113 return !client->reconnect &&
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114 client->conn_waiting_handshake_count == 0 &&
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115 client->connections != NULL;
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116 }
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117
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118 void auth_client_set_connect_notify(struct auth_client *client,
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119 auth_connect_notify_callback_t *callback,
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120 void *context)
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121 {
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122 client->connect_notify_callback = callback;
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123 client->connect_notify_context = context;
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124 }
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125
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126 static void reconnect_timeout(struct auth_client *client)
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127 {
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128 auth_client_connect_missing_servers(client);
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129 }
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130
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131 void auth_client_connect_missing_servers(struct auth_client *client)
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132 {
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133 DIR *dirp;
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134 struct dirent *dp;
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135 struct stat st;
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136
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137 /* we're chrooted */
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138 dirp = opendir(".");
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139 if (dirp == NULL) {
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140 i_fatal("opendir(.) failed when trying to get list of "
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141 "authentication servers: %m");
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142 }
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143
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144 client->reconnect = FALSE;
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145 while ((dp = readdir(dirp)) != NULL) {
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146 const char *name = dp->d_name;
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147
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148 if (name[0] == '.')
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149 continue;
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150
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151 if (auth_server_connection_find_path(client, name) != NULL) {
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152 /* already connected */
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153 continue;
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154 }
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155
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156 /* Normally they're sockets, but in UnixWare they're
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157 created as fifos. */
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158 if (stat(name, &st) == 0 &&
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159 (S_ISSOCK(st.st_mode) || S_ISFIFO(st.st_mode))) {
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160 if (auth_server_connection_new(client, name) == NULL)
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161 client->reconnect = TRUE;
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162 }
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163 }
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164
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165 if (client->connections == NULL && !client->reconnect) {
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166 if (client->missing_sockets_start_time == 0)
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167 client->missing_sockets_start_time = ioloop_time;
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168 else if (ioloop_time - client->missing_sockets_start_time >
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169 AUTH_CLIENT_SOCKET_MAX_WAIT_TIME)
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170 i_fatal("No authentication sockets found");
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171 }
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172
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173 if (closedir(dirp) < 0)
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174 i_error("closedir() failed: %m");
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175
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176 if (client->reconnect || client->connections == NULL) {
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177 if (client->to_reconnect == NULL) {
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178 client->to_reconnect =
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179 timeout_add(1000, reconnect_timeout, client);
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180 }
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181 } else if (client->to_reconnect != NULL)
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182 timeout_remove(&client->to_reconnect);
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183
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184 if (client->connect_notify_callback != NULL) {
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185 client->connect_notify_callback(client,
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186 auth_client_is_connected(client),
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187 client->connect_notify_context);
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188 }
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189 }