Mercurial > dovecot > core-2.2

annotate src/lib-master/master-login-auth.c @ 11086:260e190306b0 HEAD

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Started using str_to_*() functions instead of libc's ones.
author Timo Sirainen <tss@iki.fi>
date Wed, 07 Apr 2010 01:49:00 +0300
parents 2e08ce368bc0
children 0979e9e1e124
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
10582
615eef3139c2 Updated copyright notices to include year 2010.
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1 /* Copyright (c) 2009-2010 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 "network.h"
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5 #include "ioloop.h"
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6 #include "istream.h"
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7 #include "ostream.h"
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8 #include "hex-binary.h"
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9 #include "hash.h"
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10 #include "str.h"
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11 #include "master-auth.h"
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12 #include "master-login-auth.h"
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13
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14 #include <stdlib.h>
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15
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16 #define AUTH_MAX_INBUF_SIZE 8192
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17
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18 struct master_login_auth_request {
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19 master_login_auth_request_callback_t *callback;
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20 void *context;
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21 };
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22
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23 struct master_login_auth {
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24 pool_t pool;
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25 const char *auth_socket_path;
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26 int refcount;
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27
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28 int fd;
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29 struct io *io;
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30 struct istream *input;
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31 struct ostream *output;
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32
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33 unsigned int id_counter;
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34 struct hash_table *requests;
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35
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36 unsigned int version_received:1;
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37 };
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38
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39 struct master_login_auth *master_login_auth_init(const char *auth_socket_path)
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40 {
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41 struct master_login_auth *auth;
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42 pool_t pool;
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43
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44 pool = pool_alloconly_create("master login auth", 1024);
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45 auth = p_new(pool, struct master_login_auth, 1);
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46 auth->pool = pool;
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47 auth->auth_socket_path = p_strdup(pool, auth_socket_path);
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48 auth->refcount = 1;
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49 auth->fd = -1;
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50 auth->requests = hash_table_create(default_pool, pool, 0, NULL, NULL);
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51 return auth;
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52 }
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53
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54 void master_login_auth_disconnect(struct master_login_auth *auth)
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55 {
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56 struct hash_iterate_context *iter;
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57 void *key, *value;
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58
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59 iter = hash_table_iterate_init(auth->requests);
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60 while (hash_table_iterate(iter, &key, &value)) {
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61 struct master_login_auth_request *request = value;
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62 request->callback(NULL, MASTER_AUTH_ERRMSG_INTERNAL_FAILURE,
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63 request->context);
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64 i_free(request);
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65 }
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66 hash_table_iterate_deinit(&iter);
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67 hash_table_clear(auth->requests, FALSE);
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68
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69 if (auth->io != NULL)
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70 io_remove(&auth->io);
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71 if (auth->fd != -1) {
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72 i_stream_destroy(&auth->input);
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73 o_stream_destroy(&auth->output);
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74
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75 net_disconnect(auth->fd);
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76 auth->fd = -1;
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77 }
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78 auth->version_received = FALSE;
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79 }
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80
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81 static void master_login_auth_unref(struct master_login_auth **_auth)
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82 {
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83 struct master_login_auth *auth = *_auth;
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84
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85 *_auth = NULL;
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86
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87 i_assert(auth->refcount > 0);
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88 if (--auth->refcount > 0)
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89 return;
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90
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91 hash_table_destroy(&auth->requests);
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92 pool_unref(&auth->pool);
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93 }
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94
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95 void master_login_auth_deinit(struct master_login_auth **_auth)
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96 {
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97 struct master_login_auth *auth = *_auth;
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98
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99 *_auth = NULL;
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100
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101 master_login_auth_disconnect(auth);
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102 master_login_auth_unref(&auth);
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103 }
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104
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105 static struct master_login_auth_request *
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106 master_login_auth_lookup_request(struct master_login_auth *auth,
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107 unsigned int id)
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108 {
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109 struct master_login_auth_request *request;
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110
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111 request = hash_table_lookup(auth->requests, POINTER_CAST(id));
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112 if (request == NULL) {
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113 i_error("Auth server sent reply with unknown ID %u", id);
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114 return NULL;
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115 }
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116
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117 hash_table_remove(auth->requests, POINTER_CAST(id));
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118 return request;
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119 }
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120
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121 static bool
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122 master_login_auth_input_user(struct master_login_auth *auth, const char *args)
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123 {
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124 struct master_login_auth_request *request;
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125 const char *const *list;
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126 unsigned int id;
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127
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128 /* <id> <userid> [..] */
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129
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130 list = t_strsplit(args, "\t");
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131 if (list[0] == NULL || list[1] == NULL ||
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132 str_to_uint(list[0], &id) < 0) {
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133 i_error("Auth server sent corrupted USER line");
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134 return FALSE;
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135 }
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136
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137 request = master_login_auth_lookup_request(auth, id);
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138 if (request != NULL) {
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139 request->callback(list + 1, NULL, request->context);
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140 i_free(request);
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141 }
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142 return TRUE;
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143 }
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144
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145 static bool
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146 master_login_auth_input_notfound(struct master_login_auth *auth,
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147 const char *args)
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148 {
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149 struct master_login_auth_request *request;
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150 unsigned int id;
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151
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152 if (str_to_uint(args, &id) < 0) {
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153 i_error("Auth server sent corrupted NOTFOUND line");
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154 return FALSE;
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155 }
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156
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157 request = master_login_auth_lookup_request(auth, id);
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158 if (request != NULL) {
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159 i_error("Authenticated user not found from userdb");
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160 request->callback(NULL, MASTER_AUTH_ERRMSG_INTERNAL_FAILURE,
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161 request->context);
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162 i_free(request);
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163 }
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164 return TRUE;
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165 }
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166
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167 static bool
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168 master_login_auth_input_fail(struct master_login_auth *auth,
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169 const char *args_line)
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170 {
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171 struct master_login_auth_request *request;
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172 const char *const *args, *error = NULL;
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173 unsigned int i, id;
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174
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175 args = t_strsplit(args_line, "\t");
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176 if (args[0] == NULL || str_to_uint(args[0], &id) < 0) {
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177 i_error("Auth server sent broken FAIL line");
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178 return FALSE;
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179 }
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180 for (i = 1; args[i] != NULL; i++) {
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181 if (strncmp(args[i], "reason=", 7) == 0)
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182 error = args[i] + 7;
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183 }
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184
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185 request = master_login_auth_lookup_request(auth, id);
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186 if (request != NULL) {
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187 if (error != NULL)
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188 i_error("Internal auth failure");
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189 request->callback(NULL, error != NULL ? error :
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190 MASTER_AUTH_ERRMSG_INTERNAL_FAILURE,
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191 request->context);
10101
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192 i_free(request);
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193 }
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194 return TRUE;
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195 }
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196
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197 static void master_login_auth_input(struct master_login_auth *auth)
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198 {
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199 const char *line;
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200 bool ret;
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201
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202 switch (i_stream_read(auth->input)) {
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203 case 0:
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204 return;
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205 case -1:
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206 /* disconnected */
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207 master_login_auth_disconnect(auth);
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208 return;
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209 case -2:
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210 /* buffer full */
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211 i_error("Auth server sent us too long line");
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212 master_login_auth_disconnect(auth);
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213 return;
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214 }
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215
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216 if (!auth->version_received) {
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217 line = i_stream_next_line(auth->input);
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218 if (line == NULL)
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219 return;
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220
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221 /* make sure the major version matches */
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222 if (strncmp(line, "VERSION\t", 8) != 0 ||
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223 !str_uint_equals(t_strcut(line + 8, '\t'),
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224 AUTH_MASTER_PROTOCOL_MAJOR_VERSION)) {
10101
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225 i_error("Authentication server not compatible with "
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diff changeset
226 "master process (mixed old and new binaries?)");
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227 master_login_auth_disconnect(auth);
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228 return;
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229 }
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230 auth->version_received = TRUE;
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231 }
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232
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233 auth->refcount++;
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234 while ((line = i_stream_next_line(auth->input)) != NULL) {
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235 if (strncmp(line, "USER\t", 5) == 0)
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236 ret = master_login_auth_input_user(auth, line + 5);
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237 else if (strncmp(line, "NOTFOUND\t", 9) == 0)
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238 ret = master_login_auth_input_notfound(auth, line + 9);
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239 else if (strncmp(line, "FAIL\t", 5) == 0)
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240 ret = master_login_auth_input_fail(auth, line + 5);
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241 else
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242 ret = TRUE;
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243
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244 if (!ret || auth->input == NULL) {
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245 master_login_auth_disconnect(auth);
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diff changeset
246 break;
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247 }
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248 }
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249 master_login_auth_unref(&auth);
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250 }
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251
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252 static int
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253 master_login_auth_connect(struct master_login_auth *auth)
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254 {
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255 int fd;
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256
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257 i_assert(auth->fd == -1);
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258
10159
e027503ddb6b Use net_connect_unix_with_retries() instead of duplicating the code everywhere.
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259 fd = net_connect_unix_with_retries(auth->auth_socket_path, 1000);
10101
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260 if (fd == -1) {
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diff changeset
261 i_error("net_connect_unix(%s) failed: %m",
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diff changeset
262 auth->auth_socket_path);
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263 return -1;
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264 }
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265 auth->fd = fd;
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266 auth->input = i_stream_create_fd(fd, AUTH_MAX_INBUF_SIZE, FALSE);
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267 auth->output = o_stream_create_fd(fd, (size_t)-1, FALSE);
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268 auth->io = io_add(fd, IO_READ, master_login_auth_input, auth);
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269 return 0;
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270 }
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271
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272 void master_login_auth_request(struct master_login_auth *auth,
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273 const struct master_auth_request *req,
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diff changeset
274 master_login_auth_request_callback_t *callback,
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275 void *context)
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276 {
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277 struct master_login_auth_request *login_req;
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278 unsigned int id;
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279 string_t *str;
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280
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281 str = t_str_new(128);
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282 if (auth->fd == -1) {
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283 if (master_login_auth_connect(auth) < 0) {
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284 callback(NULL, MASTER_AUTH_ERRMSG_INTERNAL_FAILURE,
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285 context);
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286 return;
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287 }
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288 str_printfa(str, "VERSION\t%u\t%u\n",
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289 AUTH_MASTER_PROTOCOL_MAJOR_VERSION,
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290 AUTH_MASTER_PROTOCOL_MINOR_VERSION);
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291 }
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292
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293 id = ++auth->id_counter;
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294 if (id == 0)
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295 id++;
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296
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297 str_printfa(str, "REQUEST\t%u\t%u\t%u\t", id,
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298 req->client_pid, req->auth_id);
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299 binary_to_hex_append(str, req->cookie, sizeof(req->cookie));
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300 str_append_c(str, '\n');
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301 o_stream_send(auth->output, str_data(str), str_len(str));
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302
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303 login_req = i_new(struct master_login_auth_request, 1);
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304 login_req->callback = callback;
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305 login_req->context = context;
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306 hash_table_insert(auth->requests, POINTER_CAST(id), login_req);
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307 }
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308
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309 unsigned int master_login_auth_request_count(struct master_login_auth *auth)
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310 {
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311 return hash_table_count(auth->requests);
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312 }