Brian Waters | 13d9601 | 2017-12-08 16:53:31 -0600 | [diff] [blame] | 1 | /******************************************************************************************************** |
| 2 | * Software License Agreement (BSD License) * |
| 3 | * Author: Alexandre Westfahl <awestfahl@freediameter.net> * |
| 4 | * * |
| 5 | * Copyright (c) 2010, Alexandre Westfahl, Teraoka Laboratory (Keio University), and the WIDE Project. * |
| 6 | * * |
| 7 | * All rights reserved. * |
| 8 | * * |
| 9 | * Redistribution and use of this software in source and binary forms, with or without modification, are * |
| 10 | * permitted provided that the following conditions are met: * |
| 11 | * * |
| 12 | * * Redistributions of source code must retain the above * |
| 13 | * copyright notice, this list of conditions and the * |
| 14 | * following disclaimer. * |
| 15 | * * |
| 16 | * * Redistributions in binary form must reproduce the above * |
| 17 | * copyright notice, this list of conditions and the * |
| 18 | * following disclaimer in the documentation and/or other * |
| 19 | * materials provided with the distribution. * |
| 20 | * * |
| 21 | * * Neither the name of the Teraoka Laboratory nor the * |
| 22 | * names of its contributors may be used to endorse or * |
| 23 | * promote products derived from this software without * |
| 24 | * specific prior written permission of Teraoka Laboratory * |
| 25 | * * |
| 26 | * * |
| 27 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED * |
| 28 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * |
| 29 | * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * |
| 30 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * |
| 31 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * |
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| 33 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * |
| 34 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * |
| 35 | ********************************************************************************************************/ |
| 36 | #include "test_sip.h" |
| 37 | |
| 38 | |
| 39 | int test_sip_MAA_cb( struct msg ** msg, struct avp * paramavp, struct session * sess, void * opaque, enum disp_action * act) |
| 40 | { |
| 41 | /* |
| 42 | struct msg *ans, *qry; |
| 43 | struct avp *avp, *a2, *authdataitem; |
| 44 | struct msg_hdr * header = NULL; |
| 45 | struct avp_hdr * avphdr=NULL, *avpheader=NULL, *avpheader_auth=NULL,*digestheader=NULL; |
| 46 | union avp_value val; |
| 47 | int found_cnonce=0; |
| 48 | struct avp * tempavp=NULL,*sipAuthentication=NULL,*sipAuthenticate=NULL; |
| 49 | char * result; |
| 50 | char password[51]; |
| 51 | int idx=0, idx2=0, number_of_auth_items=0,i=0; |
| 52 | //Flags and variables for Database |
| 53 | int sipurinotstored=0, authenticationpending=0, querylen=0, usernamelen=0; |
| 54 | char *query=NULL,*username=NULL; |
| 55 | |
| 56 | //The nonce we will store and retrieve in session |
| 57 | struct ds_nonce *storednonce=NULL; |
| 58 | |
| 59 | |
| 60 | TRACE_ENTRY("%p %p %p %p", msg, avp, sess, act); |
| 61 | |
| 62 | if (msg == NULL) |
| 63 | return EINVAL; |
| 64 | |
| 65 | |
| 66 | // Create answer header |
| 67 | qry = *msg; |
| 68 | CHECK_FCT( fd_msg_new_answer_from_req ( fd_g_config->cnf_dict, msg, 0 ) ); |
| 69 | ans = *msg; |
| 70 | |
| 71 | |
| 72 | |
| 73 | // Add the appropriate command code & Auth-Application-Id |
| 74 | { |
| 75 | |
| 76 | CHECK_FCT( fd_msg_hdr ( *msg, &header ) ); |
| 77 | header->msg_flags = CMD_FLAG_PROXIABLE; |
| 78 | header->msg_code = 286; |
| 79 | header->msg_appl = 6; |
| 80 | |
| 81 | |
| 82 | // Add the Auth-Application-Id |
| 83 | { |
| 84 | CHECK_FCT( fd_msg_avp_new ( sip_dict.Auth_Application_Id, 0, &avp ) ); |
| 85 | ASSERT(avp); |
| 86 | val.i32 = header->msg_appl; |
| 87 | CHECK_FCT( fd_msg_avp_setvalue ( avp, &val ) ); |
| 88 | CHECK_FCT( fd_msg_avp_add ( ans, MSG_BRW_LAST_CHILD, avp) ); |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | |
| 93 | // Add the Auth-Session-State AVP |
| 94 | { |
| 95 | |
| 96 | CHECK_FCT( fd_msg_search_avp ( qry, sip_dict.Auth_Session_State, &avp) ); |
| 97 | CHECK_FCT( fd_msg_avp_hdr( avp, &avphdr ) ); |
| 98 | |
| 99 | CHECK_FCT( fd_msg_avp_new ( sip_dict.Auth_Session_State, 0, &avp ) ); |
| 100 | CHECK_FCT( fd_msg_avp_setvalue( avp, avphdr->avp_value ) ); |
| 101 | CHECK_FCT( fd_msg_avp_add( ans, MSG_BRW_LAST_CHILD, avp ) ); |
| 102 | } |
| 103 | |
| 104 | |
| 105 | |
| 106 | // Check if method is REGISTER then User-Name must be present |
| 107 | { |
| 108 | |
| 109 | CHECK_FCT( fd_msg_search_avp ( qry, sip_dict.SIP_Method, &avp) ); |
| 110 | CHECK_FCT( fd_msg_avp_hdr( avp, &avpheader )); |
| 111 | |
| 112 | |
| 113 | char *method=NULL; |
| 114 | |
| 115 | CHECK_FCT( fd_msg_search_avp ( qry, sip_dict.User_Name, &avp) ); |
| 116 | if(avp!=NULL) |
| 117 | { |
| 118 | |
| 119 | int not_found=1; |
| 120 | MYSQL_RES *res=NULL; |
| 121 | MYSQL_ROW row; |
| 122 | |
| 123 | CHECK_FCT( fd_msg_avp_hdr( avp, &avphdr ) ); |
| 124 | |
| 125 | //We allocate the double size of username because at worst it can be all quotes |
| 126 | username=malloc(avphdr->avp_value->os.len*2+1); |
| 127 | //We purify username not to have forbidden characters |
| 128 | usernamelen=mysql_real_escape_string(conn, username, avphdr->avp_value->os.data, avphdr->avp_value->os.len); |
| 129 | |
| 130 | |
| 131 | if((strncmp(avpheader->avp_value->os.data,"REGISTER",avpheader->avp_value->os.len)==0)) |
| 132 | { |
| 133 | not_found=1; |
| 134 | |
| 135 | //We copy username in query |
| 136 | querylen=SQL_GETPASSWORD_LEN + usernamelen; |
| 137 | query = malloc(querylen+2); |
| 138 | snprintf(query, querylen+1, SQL_GETPASSWORD, username); |
| 139 | |
| 140 | |
| 141 | |
| 142 | //We make the query |
| 143 | request_mysql(query); |
| 144 | res=mysql_use_result(conn); |
| 145 | if(res==NULL) |
| 146 | { |
| 147 | //We couldn't make the request |
| 148 | result="DIAMETER_UNABLE_TO_COMPLY"; |
| 149 | goto out; |
| 150 | } |
| 151 | |
| 152 | |
| 153 | |
| 154 | while ((row = mysql_fetch_row(res)) != NULL) |
| 155 | { |
| 156 | if(row[0]!="") |
| 157 | { |
| 158 | strcpy(password,row[0]); |
| 159 | not_found=0; |
| 160 | break; |
| 161 | } |
| 162 | } |
| 163 | mysql_free_result(res); |
| 164 | free(query); |
| 165 | |
| 166 | if(not_found) |
| 167 | { |
| 168 | TRACE_DEBUG(FULL,"The user %s doesn't exist!",username); |
| 169 | result="DIAMETER_ERROR_USER_UNKNOWN"; |
| 170 | free(username); |
| 171 | goto out; |
| 172 | } |
| 173 | |
| 174 | |
| 175 | |
| 176 | //Now that we know the user exist, we get the list of AOR owned by this user |
| 177 | querylen=SQL_GETSIPAOR_LEN + usernamelen; |
| 178 | query = malloc(querylen+2); |
| 179 | snprintf(query, querylen+1, SQL_GETSIPAOR, username); |
| 180 | |
| 181 | //We make the query |
| 182 | request_mysql(query); |
| 183 | res=mysql_use_result(conn); |
| 184 | if(res==NULL) |
| 185 | { |
| 186 | //We couldn't make the request |
| 187 | result="DIAMETER_UNABLE_TO_COMPLY"; |
| 188 | goto out; |
| 189 | } |
| 190 | |
| 191 | //We retrieve the SIP-AOR from AVP to check if the user can us it |
| 192 | CHECK_FCT( fd_msg_search_avp ( qry, sip_dict.SIP_AOR, &avp) ); |
| 193 | CHECK_FCT( fd_msg_avp_hdr( avp, &avphdr ) ); |
| 194 | |
| 195 | not_found=1; |
| 196 | while ((row = mysql_fetch_row(res)) != NULL) |
| 197 | { |
| 198 | if(strncmp(avphdr->avp_value->os.data,row[0],avphdr->avp_value->os.len)==0) |
| 199 | { |
| 200 | not_found=0; |
| 201 | break; |
| 202 | } |
| 203 | } |
| 204 | mysql_free_result(res); |
| 205 | free(query); |
| 206 | |
| 207 | if(not_found) |
| 208 | { |
| 209 | TRACE_DEBUG(FULL,"The user %s can't use this SIP-AOR!",username); |
| 210 | result="DIAMETER_ERROR_IDENTITIES_DONT_MATCH"; |
| 211 | free(username); |
| 212 | goto out; |
| 213 | } |
| 214 | |
| 215 | } |
| 216 | |
| 217 | CHECK_FCT( fd_msg_search_avp ( qry, sip_dict.SIP_Server_URI, &avp) ); |
| 218 | CHECK_FCT( fd_msg_avp_hdr( avp, &avphdr )); |
| 219 | |
| 220 | if(avphdr!=NULL) |
| 221 | { |
| 222 | char *sipuri=NULL; |
| 223 | int sipurilen=0; |
| 224 | |
| 225 | //We allocate the double size of SIP-URI because at worst it can be all quotes |
| 226 | sipuri=malloc(avphdr->avp_value->os.len*2+1); |
| 227 | //We purify SIP-URI not to have forbidden characters |
| 228 | sipurilen=mysql_real_escape_string(conn, sipuri, avphdr->avp_value->os.data, avphdr->avp_value->os.len); |
| 229 | |
| 230 | |
| 231 | //We get the SIP-URI assignated to the user |
| 232 | querylen=SQL_GETSIPURI_LEN + usernamelen; |
| 233 | query = malloc(querylen+2); |
| 234 | snprintf(query, querylen+1, SQL_GETSIPURI, username); |
| 235 | |
| 236 | //We make the query |
| 237 | request_mysql(query); |
| 238 | res=mysql_use_result(conn); |
| 239 | if(res==NULL) |
| 240 | { |
| 241 | //We couldn't make the request |
| 242 | result="DIAMETER_UNABLE_TO_COMPLY"; |
| 243 | goto out; |
| 244 | } |
| 245 | not_found=1; |
| 246 | while ((row = mysql_fetch_row(res)) != NULL) |
| 247 | { |
| 248 | if(strncmp(avphdr->avp_value->os.data,row[0],avphdr->avp_value->os.len)==0) |
| 249 | { |
| 250 | not_found=0; |
| 251 | break; |
| 252 | } |
| 253 | } |
| 254 | mysql_free_result(res); |
| 255 | free(query); |
| 256 | |
| 257 | if(not_found) |
| 258 | { |
| 259 | //We update the SIP_URI for the user and we flag "authentication in progress" |
| 260 | querylen=SQL_SETSIPURI_LEN + usernamelen + sipurilen; |
| 261 | query = malloc(querylen+2); |
| 262 | snprintf(query, querylen+1, SQL_SETSIPURI, sipuri, username); |
| 263 | |
| 264 | //We make the query |
| 265 | request_mysql(query); |
| 266 | |
| 267 | free(query); |
| 268 | authenticationpending=1; |
| 269 | } |
| 270 | free(sipuri); |
| 271 | |
| 272 | } |
| 273 | else |
| 274 | sipurinotstored=1; |
| 275 | |
| 276 | } |
| 277 | else |
| 278 | { |
| 279 | result="DIAMETER_USER_NAME_REQUIRED"; |
| 280 | goto out; |
| 281 | } |
| 282 | |
| 283 | |
| 284 | free(method); |
| 285 | |
| 286 | } |
| 287 | |
| 288 | |
| 289 | //TODO: remove loop for authdataitem because RFC say only one (wait for answer from Garcia) |
| 290 | // How many Auth Data Items? |
| 291 | CHECK_FCT( fd_msg_search_avp ( qry, sip_dict.SIP_Number_Auth_Items, &avp) ); |
| 292 | CHECK_FCT( fd_msg_avp_hdr( avp, &avpheader ) ); |
| 293 | |
| 294 | |
| 295 | if(avp!=NULL) |
| 296 | { |
| 297 | CHECK_FCT(fd_msg_search_avp ( qry, sip_dict.SIP_Auth_Data_Item, &avp)); |
| 298 | CHECK_FCT( fd_msg_avp_hdr( avp, &avphdr ) ); |
| 299 | |
| 300 | if(avp!=NULL) |
| 301 | { |
| 302 | //First is Authentication Scheme |
| 303 | CHECK_FCT(fd_msg_browse ( avp, MSG_BRW_FIRST_CHILD, &avp, NULL) ); |
| 304 | CHECK_FCT( fd_msg_avp_hdr( avp, &avphdr ) ); |
| 305 | |
| 306 | //Digest-Authentication? |
| 307 | if(avphdr->avp_value->i32==0) |
| 308 | { |
| 309 | |
| 310 | for(idx=0;idx<avpheader->avp_value->i32;idx++) |
| 311 | { |
| 312 | //We look for SIP Auth items |
| 313 | CHECK_FCT(fd_msg_browse ( avp, MSG_BRW_WALK, &avp, NULL) ); |
| 314 | |
| 315 | if(avp!=NULL) |
| 316 | { |
| 317 | |
| 318 | CHECK_FCT( fd_msg_avp_hdr( avp,&avphdr )); |
| 319 | |
| 320 | if(avphdr->avp_code==380) //We only create Auth-Data-Item to answer Auth-Data-Item |
| 321 | { |
| 322 | // Add the Auth-Data-Item AVP |
| 323 | CHECK_FCT( fd_msg_avp_new ( sip_dict.SIP_Auth_Data_Item, 0, &authdataitem ) ); |
| 324 | |
| 325 | // Add the Authentication Scheme AVP |
| 326 | { |
| 327 | CHECK_FCT( fd_msg_avp_new ( sip_dict.SIP_Authentication_Scheme, 0, &a2 ) ); |
| 328 | val.i32=0; //We only know Digest Authentication |
| 329 | CHECK_FCT( fd_msg_avp_setvalue( a2, &val ) ); |
| 330 | CHECK_FCT( fd_msg_avp_add( authdataitem, MSG_BRW_LAST_CHILD, a2 ) ); |
| 331 | } |
| 332 | |
| 333 | //We need to know if there is a Cnonce attribute (only in the second MAR request) |
| 334 | |
| 335 | //CHECK_FCT(fd_msg_browse ( avp, MSG_BRW_WALK, &avp, NULL) ); |
| 336 | |
| 337 | |
| 338 | CHECK_FCT(fd_avp_search_avp (avp, sip_dict.Digest_CNonce, &a2 )); |
| 339 | |
| 340 | if(a2!=NULL) |
| 341 | found_cnonce=1; |
| 342 | else |
| 343 | found_cnonce=0; |
| 344 | |
| 345 | if(!found_cnonce) |
| 346 | { |
| 347 | // |
| 348 | We are in the case of first access request so we need to challenge the user. |
| 349 | |
| 350 | TRACE_DEBUG(FULL,"First Authorization in progress..."); |
| 351 | |
| 352 | // Create a new session //this create a new session Id !!! |
| 353 | //CHECK_FCT_DO( fd_sess_new( &sess, fd_g_config->cnf_diamid, "test_sip", 7), goto out ); |
| 354 | |
| 355 | |
| 356 | // Create the SIP-Authenticate AVP |
| 357 | { |
| 358 | CHECK_FCT( fd_msg_avp_new ( sip_dict.SIP_Authenticate, 0, &sipAuthenticate ) ); |
| 359 | } |
| 360 | |
| 361 | // Add the Digest QOP AVP |
| 362 | { |
| 363 | CHECK_FCT( fd_msg_avp_new ( sip_dict.Digest_QOP, 0, &a2 ) ); |
| 364 | val.os.data="auth"; |
| 365 | val.os.len=strlen(val.os.data); |
| 366 | CHECK_FCT( fd_msg_avp_setvalue( a2, &val ) ); |
| 367 | CHECK_FCT( fd_msg_avp_add( sipAuthenticate, MSG_BRW_LAST_CHILD, a2 ) ); |
| 368 | } |
| 369 | // Add the Digest Nonce AVP |
| 370 | { |
| 371 | uint8_t buffer[NONCE_SIZE]; |
| 372 | char nonce[NONCE_SIZE * 2 + 1]; |
| 373 | |
| 374 | |
| 375 | gcry_create_nonce ((uint8_t *)buffer, sizeof(buffer)); |
| 376 | |
| 377 | for(i=0;i<NONCE_SIZE;i++) |
| 378 | sprintf(&nonce[2 * i], "%2.2hhx", buffer[i]); |
| 379 | |
| 380 | CHECK_FCT( fd_msg_avp_new ( sip_dict.Digest_Nonce, 0, &a2 ) ); |
| 381 | |
| 382 | |
| 383 | //We store the nonce (storednonce structure) inside the session |
| 384 | storednonce=malloc(sizeof(struct ds_nonce)); |
| 385 | memset(storednonce,0,sizeof(struct ds_nonce)); |
| 386 | CHECK_MALLOC(storednonce->nonce=malloc(NONCE_SIZE*2+1)); |
| 387 | memcpy(storednonce->nonce,(char *)nonce,NONCE_SIZE*2+1); |
| 388 | CHECK_FCT( fd_sess_state_store ( ds_sess_hdl, sess, &storednonce )); |
| 389 | |
| 390 | val.os.data=nonce; |
| 391 | val.os.len=NONCE_SIZE * 2; |
| 392 | |
| 393 | CHECK_FCT( fd_msg_avp_setvalue( a2, &val ) ); |
| 394 | CHECK_FCT( fd_msg_avp_add( sipAuthenticate, MSG_BRW_LAST_CHILD, a2 ) ); |
| 395 | } |
| 396 | // Add the Digest Algorithm AVP |
| 397 | { |
| 398 | CHECK_FCT( fd_msg_avp_new ( sip_dict.Digest_Algorithm, 0, &a2 ) ); |
| 399 | val.os.data="MD5"; |
| 400 | val.os.len=strlen(val.os.data); |
| 401 | CHECK_FCT( fd_msg_avp_setvalue( a2, &val ) ); |
| 402 | CHECK_FCT( fd_msg_avp_add( sipAuthenticate, MSG_BRW_LAST_CHILD, a2 ) ); |
| 403 | |
| 404 | } |
| 405 | // Add the Digest Realm AVP |
| 406 | { |
| 407 | tempavp=avp; |
| 408 | |
| 409 | avpheader_auth=walk_digest(tempavp, 104); |
| 410 | if(avpheader_auth!=NULL) |
| 411 | { |
| 412 | CHECK_FCT( fd_msg_avp_new ( sip_dict.Digest_Realm, 0, &a2 ) ); |
| 413 | CHECK_FCT( fd_msg_avp_setvalue( a2, avpheader_auth->avp_value ) ); |
| 414 | CHECK_FCT( fd_msg_avp_add( sipAuthenticate, MSG_BRW_LAST_CHILD, a2 ) ); |
| 415 | |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | |
| 420 | //We add SIP Authenticate to Auth Data Item |
| 421 | CHECK_FCT( fd_msg_avp_add( authdataitem, MSG_BRW_LAST_CHILD, sipAuthenticate ) ); |
| 422 | //We add Auth Data Item to Answer |
| 423 | CHECK_FCT( fd_msg_avp_add( ans, MSG_BRW_LAST_CHILD, authdataitem ) ); |
| 424 | |
| 425 | number_of_auth_items++; |
| 426 | if(sipurinotstored) |
| 427 | result="DIAMETER_SUCCESS_AUTH_SENT_SERVER_NOT_STORED"; |
| 428 | else |
| 429 | result="DIAMETER_MULTI_ROUND_AUTH"; |
| 430 | found_cnonce=0; |
| 431 | } |
| 432 | else |
| 433 | { |
| 434 | // |
| 435 | We are in the case of access request after challenge so we need to check credentials. |
| 436 | |
| 437 | TRACE_DEBUG(FULL,"Authentication after challenge"); |
| 438 | |
| 439 | // Search the session, retrieve its data |
| 440 | { |
| 441 | //int new=0; |
| 442 | |
| 443 | //TRACE_DEBUG(FULL,"new: *%d*",new); |
| 444 | //ASSERT( new == 0 ); |
| 445 | CHECK_FCT( fd_sess_state_retrieve( ds_sess_hdl, sess, &storednonce )); |
| 446 | if(storednonce ==NULL) |
| 447 | { |
| 448 | result="DIAMETER_UNABLE_TO_COMPLY"; |
| 449 | |
| 450 | if(username!=NULL) |
| 451 | free(username); |
| 452 | goto out; |
| 453 | } |
| 454 | } |
| 455 | |
| 456 | // Create the SIP-Authentication-Info AVP |
| 457 | { |
| 458 | CHECK_FCT( fd_msg_avp_new ( sip_dict.SIP_Authentication_Info, 0, &sipAuthentication ) ); |
| 459 | } |
| 460 | |
| 461 | |
| 462 | |
| 463 | // Add the Digest response Auth AVP |
| 464 | { |
| 465 | //uint8_t bufferresp[DIGEST_LEN]; |
| 466 | //char response[DIGEST_LEN*2+1]; |
| 467 | int i=0; |
| 468 | |
| 469 | //We extract all the data we need |
| 470 | tempavp=avp; |
| 471 | |
| 472 | char * digest_username=NULL, *digest_uri=NULL, *digest_response=NULL, *digest_realm=NULL, *digest_nonce=NULL, *digest_method=NULL, *digest_qop=NULL, *digest_algorithm=NULL, *digest_cnonce=NULL, *digest_noncecount=NULL; |
| 473 | |
| 474 | |
| 475 | CHECK_FCT(fd_avp_search_avp (avp, sip_dict.Digest_Nonce, &a2 )); |
| 476 | if(a2!=NULL) |
| 477 | { |
| 478 | CHECK_FCT( fd_msg_avp_hdr( a2, &digestheader ) ); |
| 479 | if(digestheader!=NULL) |
| 480 | { |
| 481 | |
| 482 | digest_nonce = malloc(digestheader->avp_value->os.len + 1); |
| 483 | memcpy(digest_nonce, digestheader->avp_value->os.data, |
| 484 | digestheader->avp_value->os.len); |
| 485 | digest_nonce[digestheader->avp_value->os.len]='\0'; |
| 486 | TRACE_DEBUG(FULL,"Element:*%s*",digest_nonce); |
| 487 | TRACE_DEBUG(FULL,"Stored Nonce:*%s*",storednonce->nonce); |
| 488 | |
| 489 | if(strcmp(digest_nonce,storednonce->nonce)!=0) |
| 490 | { |
| 491 | free(digest_nonce); |
| 492 | free(storednonce->nonce); |
| 493 | free(storednonce); |
| 494 | result="DIAMETER_UNABLE_TO_COMPLY"; |
| 495 | |
| 496 | if(username!=NULL) |
| 497 | free(username); |
| 498 | goto out; |
| 499 | } |
| 500 | |
| 501 | } |
| 502 | |
| 503 | } |
| 504 | CHECK_FCT(fd_avp_search_avp (avp, sip_dict.Digest_Response, &a2 )); |
| 505 | if(a2!=NULL) |
| 506 | { |
| 507 | CHECK_FCT( fd_msg_avp_hdr( a2, &digestheader ) ); |
| 508 | if(digestheader!=NULL) |
| 509 | { |
| 510 | digest_response = malloc(digestheader->avp_value->os.len + 1); |
| 511 | memcpy(digest_response, digestheader->avp_value->os.data, |
| 512 | digestheader->avp_value->os.len); |
| 513 | digest_response[digestheader->avp_value->os.len]='\0'; |
| 514 | TRACE_DEBUG(FULL,"Element:*%s*",digest_response); |
| 515 | } |
| 516 | |
| 517 | } |
| 518 | CHECK_FCT(fd_avp_search_avp (avp, sip_dict.Digest_Realm, &a2 )); |
| 519 | if(a2!=NULL) |
| 520 | { |
| 521 | CHECK_FCT( fd_msg_avp_hdr( a2, &digestheader ) ); |
| 522 | if(digestheader!=NULL) |
| 523 | { |
| 524 | digest_realm = malloc(digestheader->avp_value->os.len + 1); |
| 525 | memcpy(digest_realm, digestheader->avp_value->os.data, |
| 526 | digestheader->avp_value->os.len); |
| 527 | digest_realm[digestheader->avp_value->os.len]='\0'; |
| 528 | TRACE_DEBUG(FULL,"Element:*%s*",digest_realm); |
| 529 | } |
| 530 | } |
| 531 | |
| 532 | CHECK_FCT(fd_avp_search_avp (avp, sip_dict.Digest_Method, &a2 )); |
| 533 | if(a2!=NULL) |
| 534 | { |
| 535 | CHECK_FCT( fd_msg_avp_hdr( a2, &digestheader ) ); |
| 536 | if(digestheader!=NULL) |
| 537 | { |
| 538 | digest_method = malloc(digestheader->avp_value->os.len + 1); |
| 539 | memcpy(digest_method, digestheader->avp_value->os.data, |
| 540 | digestheader->avp_value->os.len); |
| 541 | digest_method[digestheader->avp_value->os.len]='\0'; |
| 542 | TRACE_DEBUG(FULL,"Element:*%s*",digest_method); |
| 543 | } |
| 544 | } |
| 545 | else |
| 546 | digest_method=""; |
| 547 | |
| 548 | CHECK_FCT(fd_avp_search_avp (avp, sip_dict.Digest_URI, &a2 )); |
| 549 | if(a2!=NULL) |
| 550 | { |
| 551 | CHECK_FCT( fd_msg_avp_hdr( a2, &digestheader ) ); |
| 552 | if(digestheader!=NULL) |
| 553 | { |
| 554 | digest_uri = malloc(digestheader->avp_value->os.len + 1); |
| 555 | memcpy(digest_uri, digestheader->avp_value->os.data, |
| 556 | digestheader->avp_value->os.len); |
| 557 | digest_uri[digestheader->avp_value->os.len]='\0'; |
| 558 | TRACE_DEBUG(FULL,"Element:*%s*",digest_uri); |
| 559 | } |
| 560 | } |
| 561 | |
| 562 | CHECK_FCT(fd_avp_search_avp (avp, sip_dict.Digest_QOP, &a2 )); |
| 563 | if(a2!=NULL) |
| 564 | { |
| 565 | CHECK_FCT( fd_msg_avp_hdr( a2, &digestheader ) ); |
| 566 | if(digestheader!=NULL) |
| 567 | { |
| 568 | digest_qop = malloc(digestheader->avp_value->os.len + 1); |
| 569 | memcpy(digest_qop, digestheader->avp_value->os.data, |
| 570 | digestheader->avp_value->os.len); |
| 571 | digest_qop[digestheader->avp_value->os.len]='\0'; |
| 572 | TRACE_DEBUG(FULL,"Element:*%s*",digest_qop); |
| 573 | } |
| 574 | } |
| 575 | else |
| 576 | digest_qop=NULL; |
| 577 | CHECK_FCT(fd_avp_search_avp (avp, sip_dict.Digest_Algorithm, &a2 )); |
| 578 | if(a2!=NULL) |
| 579 | { |
| 580 | CHECK_FCT( fd_msg_avp_hdr( a2, &digestheader ) ); |
| 581 | if(digestheader!=NULL) |
| 582 | { |
| 583 | digest_algorithm = malloc(digestheader->avp_value->os.len + 1); |
| 584 | memcpy(digest_algorithm, digestheader->avp_value->os.data, |
| 585 | digestheader->avp_value->os.len); |
| 586 | digest_algorithm[digestheader->avp_value->os.len]='\0'; |
| 587 | TRACE_DEBUG(FULL,"Element:*%s*",digest_algorithm); |
| 588 | } |
| 589 | } |
| 590 | else |
| 591 | digest_algorithm=NULL; |
| 592 | CHECK_FCT(fd_avp_search_avp (avp, sip_dict.Digest_CNonce, &a2 )); |
| 593 | if(a2!=NULL) |
| 594 | { |
| 595 | CHECK_FCT( fd_msg_avp_hdr( a2, &digestheader ) ); |
| 596 | if(digestheader!=NULL) |
| 597 | { |
| 598 | digest_cnonce = malloc(digestheader->avp_value->os.len + 1); |
| 599 | memcpy(digest_cnonce, digestheader->avp_value->os.data, |
| 600 | digestheader->avp_value->os.len); |
| 601 | digest_cnonce[digestheader->avp_value->os.len]='\0'; |
| 602 | TRACE_DEBUG(FULL,"Element:*%s*",digest_cnonce); |
| 603 | } |
| 604 | } |
| 605 | else |
| 606 | digest_cnonce=""; |
| 607 | CHECK_FCT(fd_avp_search_avp (avp, sip_dict.Digest_Nonce_Count, &a2 )); |
| 608 | if(a2!=NULL) |
| 609 | { |
| 610 | CHECK_FCT( fd_msg_avp_hdr( a2, &digestheader ) ); |
| 611 | if(digestheader!=NULL) |
| 612 | { |
| 613 | digest_noncecount = malloc(digestheader->avp_value->os.len + 1); |
| 614 | memcpy(digest_noncecount, digestheader->avp_value->os.data, |
| 615 | digestheader->avp_value->os.len); |
| 616 | digest_noncecount[digestheader->avp_value->os.len]='\0'; |
| 617 | TRACE_DEBUG(FULL,"Element:*%s*",digest_noncecount); |
| 618 | } |
| 619 | } |
| 620 | else |
| 621 | digest_noncecount=""; |
| 622 | CHECK_FCT(fd_avp_search_avp (avp, sip_dict.Digest_Username, &a2 )); |
| 623 | if(a2!=NULL) |
| 624 | { |
| 625 | CHECK_FCT( fd_msg_avp_hdr( a2, &digestheader ) ); |
| 626 | if(digestheader!=NULL) |
| 627 | { |
| 628 | digest_username = malloc(digestheader->avp_value->os.len + 1); |
| 629 | memcpy(digest_username, digestheader->avp_value->os.data, |
| 630 | digestheader->avp_value->os.len); |
| 631 | digest_username[digestheader->avp_value->os.len]='\0'; |
| 632 | TRACE_DEBUG(FULL,"Element:*%s*",digest_username); |
| 633 | } |
| 634 | } |
| 635 | //TODO: replace by authentication function |
| 636 | |
| 637 | HASHHEX HA1; |
| 638 | HASHHEX HA2 = ""; |
| 639 | HASHHEX response, responseauth; |
| 640 | |
| 641 | |
| 642 | DigestCalcHA1(digest_algorithm, digest_username, digest_realm, password, digest_nonce,digest_cnonce, HA1); |
| 643 | |
| 644 | DigestCalcResponse(HA1, digest_nonce, digest_noncecount, digest_cnonce, digest_qop,digest_method, digest_uri, HA2, response); |
| 645 | |
| 646 | |
| 647 | // We check that the Digest-Response is the same (UA, Diameter) |
| 648 | if(strcmp(response,digest_response)!=0) |
| 649 | { |
| 650 | TRACE_DEBUG(FULL,"Response calculated by Diameter server:%s",response); |
| 651 | TRACE_DEBUG(FULL,"Response calculated by UA:%s",digest_response); |
| 652 | TRACE_DEBUG(INFO,"Digest-Response does not match!"); |
| 653 | result="DIAMETER_UNABLE_TO_COMPLY"; |
| 654 | free(digest_algorithm); |
| 655 | free(digest_cnonce); |
| 656 | free(digest_nonce); |
| 657 | free(digest_noncecount); |
| 658 | free(digest_method); |
| 659 | free(digest_username); |
| 660 | free(digest_uri); |
| 661 | free(digest_qop); |
| 662 | free(digest_response); |
| 663 | free(digest_realm); |
| 664 | free(storednonce->nonce); |
| 665 | free(storednonce); |
| 666 | if(username!=NULL) |
| 667 | free(username); |
| 668 | goto out; |
| 669 | |
| 670 | } |
| 671 | //We calculate Digest_Response_Auth |
| 672 | DigestCalcResponseAuth(HA1, digest_nonce, digest_noncecount, digest_cnonce, digest_qop,digest_method, digest_uri, HA2, responseauth); |
| 673 | |
| 674 | TRACE_DEBUG(FULL,"Response calculated by Diameter server:%s",response); |
| 675 | TRACE_DEBUG(FULL,"Response calculated by UA:%s",digest_response); |
| 676 | if(strcmp(digest_qop,"auth-int")==0) |
| 677 | { |
| 678 | //Digest-HA1 MUST be used instead of Digest-Response-Auth if Digest-Qop is 'auth-int'. |
| 679 | CHECK_FCT( fd_msg_avp_new ( sip_dict.Digest_HA1, 0, &a2 ) ); |
| 680 | val.os.data=HA1; |
| 681 | val.os.len=HASHHEXLEN+1; |
| 682 | CHECK_FCT( fd_msg_avp_setvalue( a2, &val ) ); |
| 683 | CHECK_FCT( fd_msg_avp_add( sipAuthentication, MSG_BRW_LAST_CHILD, a2 ) ); |
| 684 | } |
| 685 | else |
| 686 | { |
| 687 | //Digest-Response-Auth MUST be used instead of Digest-HA1 if Digest-Qop is 'auth'. |
| 688 | CHECK_FCT( fd_msg_avp_new ( sip_dict.Digest_Response_Auth, 0, &a2 ) ); |
| 689 | val.os.data=responseauth; |
| 690 | val.os.len=DIGEST_LEN*2; |
| 691 | CHECK_FCT( fd_msg_avp_setvalue( a2, &val ) ); |
| 692 | CHECK_FCT( fd_msg_avp_add( sipAuthentication, MSG_BRW_LAST_CHILD, a2 ) ); |
| 693 | } |
| 694 | free(digest_algorithm); |
| 695 | free(digest_cnonce); |
| 696 | free(digest_nonce); |
| 697 | free(digest_noncecount); |
| 698 | free(digest_method); |
| 699 | free(digest_username); |
| 700 | free(digest_uri); |
| 701 | free(digest_qop); |
| 702 | free(digest_response); |
| 703 | free(digest_realm); |
| 704 | free(storednonce->nonce); |
| 705 | free(storednonce); |
| 706 | |
| 707 | number_of_auth_items++; |
| 708 | } |
| 709 | |
| 710 | |
| 711 | //We add SIP Authentication-Info to Auth Data Item |
| 712 | CHECK_FCT( fd_msg_avp_add( authdataitem, MSG_BRW_LAST_CHILD, sipAuthentication ) ); |
| 713 | //We add Auth Data Item to Answer |
| 714 | CHECK_FCT( fd_msg_avp_add( ans, MSG_BRW_LAST_CHILD, authdataitem ) ); |
| 715 | |
| 716 | |
| 717 | if(username!=NULL && authenticationpending) |
| 718 | { |
| 719 | //We clear the flag "authentication pending" |
| 720 | querylen=SQL_CLEARFLAG_LEN + usernamelen; |
| 721 | query = malloc(querylen+2); |
| 722 | snprintf(query, querylen+1, SQL_CLEARFLAG, username); |
| 723 | |
| 724 | //We make the query |
| 725 | request_mysql(query); |
| 726 | |
| 727 | free(query); |
| 728 | } |
| 729 | |
| 730 | if(sipurinotstored) |
| 731 | result="DIAMETER_SUCCESS_SERVER_NAME_NOT_STORED"; |
| 732 | else |
| 733 | result="DIAMETER_SUCCESS"; |
| 734 | found_cnonce=0; |
| 735 | } |
| 736 | } |
| 737 | } |
| 738 | else |
| 739 | TRACE_DEBUG(INFO,"No auth data items!"); |
| 740 | } |
| 741 | //Add SIP_Number_Auth_Items AVP |
| 742 | { |
| 743 | CHECK_FCT( fd_msg_avp_new ( sip_dict.SIP_Number_Auth_Items, 0, &avp ) ); |
| 744 | val.i32 = number_of_auth_items; |
| 745 | CHECK_FCT( fd_msg_avp_setvalue ( avp, &val ) ); |
| 746 | CHECK_FCT( fd_msg_avp_add ( ans, MSG_BRW_LAST_CHILD, avp) ); |
| 747 | } |
| 748 | |
| 749 | |
| 750 | } |
| 751 | else |
| 752 | { |
| 753 | TRACE_DEBUG(INFO,"We only support DIGEST for now, unable to comply"); |
| 754 | result="DIAMETER_ERROR_AUTH_SCHEME_NOT_SUPPORTED"; |
| 755 | if(username!=NULL) |
| 756 | free(username); |
| 757 | goto out; |
| 758 | } |
| 759 | } |
| 760 | } |
| 761 | else |
| 762 | { |
| 763 | //TODO: remove this because Number_Auth_Items is not compulsory |
| 764 | TRACE_DEBUG(FULL,"Number-Auth-Items is not included."); |
| 765 | result="DIAMETER_UNABLE_TO_COMPLY"; |
| 766 | if(username!=NULL) |
| 767 | free(username); |
| 768 | goto out; |
| 769 | } |
| 770 | |
| 771 | if(username!=NULL) |
| 772 | free(username); |
| 773 | |
| 774 | |
| 775 | out: |
| 776 | // Set the Origin-Host, Origin-Realm, Result-Code AVPs |
| 777 | CHECK_FCT( fd_msg_rescode_set( ans, result, NULL, NULL, 1 ) ); |
| 778 | |
| 779 | |
| 780 | // Send the answer |
| 781 | CHECK_FCT( fd_msg_send( msg, NULL, NULL ) ); |
| 782 | |
| 783 | */ |
| 784 | return 0; |
| 785 | } |
| 786 | |