sjero.net Git - linphone/blob - coreapi/authentication.c

   1 /***************************************************************************
   2  *            authentication.c
   3  *
   4  *  Fri Jul 16 12:08:34 2004
   5  *  Copyright  2004-2009  Simon MORLAT
   6  *  simon.morlat@linphone.org
   7  ****************************************************************************/
   8
   9 /*
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU Library General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  */
  24
  25 #include "linphonecore.h"
  26 #include "private.h"
  27 #include <eXosip2/eXosip.h>
  28 #include <osipparser2/osip_message.h>
  29 #include "lpconfig.h"
  30
  31 extern LinphoneProxyConfig *linphone_core_get_proxy_config_from_rid(LinphoneCore *lc, int rid);
  32
  33 /**
  34  * @addtogroup authentication
  35  * @{
  36 **/
  37
  38 /**
  39  * Create a LinphoneAuthInfo object with supplied information.
  40  *
  41  * The object can be created empty, that is with all arguments set to NULL.
  42  * Username, userid, password and realm can be set later using specific methods.
  43 **/
  44 LinphoneAuthInfo *linphone_auth_info_new(const char *username, const char *userid,
  45                                                                                                                 const char *passwd, const char *ha1,const char *realm)
  46 {
  47         LinphoneAuthInfo *obj=ms_new0(LinphoneAuthInfo,1);
  48         if (username!=NULL && (strlen(username)>0) ) obj->username=ms_strdup(username);
  49         if (userid!=NULL && (strlen(userid)>0)) obj->userid=ms_strdup(userid);
  50         if (passwd!=NULL && (strlen(passwd)>0)) obj->passwd=ms_strdup(passwd);
  51         if (ha1!=NULL && (strlen(ha1)>0)) obj->ha1=ms_strdup(ha1);
  52         if (realm!=NULL && (strlen(realm)>0)) obj->realm=ms_strdup(realm);
  53         obj->works=FALSE;
  54         obj->first_time=TRUE;
  55         return obj;
  56 }
  57
  58 /**
  59  * Sets the password.
  60 **/
  61 void linphone_auth_info_set_passwd(LinphoneAuthInfo *info, const char *passwd){
  62         if (info->passwd!=NULL) {
  63                 ms_free(info->passwd);
  64                 info->passwd=NULL;
  65         }
  66         if (passwd!=NULL && (strlen(passwd)>0)) info->passwd=ms_strdup(passwd);
  67 }
  68
  69 /**
  70  * Sets the username.
  71 **/
  72 void linphone_auth_info_set_username(LinphoneAuthInfo *info, const char *username){
  73         if (info->username){
  74                 ms_free(info->username);
  75                 info->username=NULL;
  76         }
  77         if (username && strlen(username)>0) info->username=ms_strdup(username);
  78 }
  79
  80 /**
  81  * Sets userid.
  82 **/
  83 void linphone_auth_info_set_userid(LinphoneAuthInfo *info, const char *userid){
  84         if (info->userid){
  85                 ms_free(info->userid);
  86                 info->userid=NULL;
  87         }
  88         if (userid && strlen(userid)>0) info->userid=ms_strdup(userid);
  89 }
  90
  91 /**
  92  * Destroys a LinphoneAuthInfo object.
  93 **/
  94 void linphone_auth_info_destroy(LinphoneAuthInfo *obj){
  95         if (obj->username!=NULL) ms_free(obj->username);
  96         if (obj->userid!=NULL) ms_free(obj->userid);
  97         if (obj->passwd!=NULL) ms_free(obj->passwd);
  98         if (obj->ha1!=NULL) ms_free(obj->ha1);
  99         if (obj->realm!=NULL) ms_free(obj->realm);
 100         ms_free(obj);
 101 }
 102
 103 void linphone_auth_info_write_config(LpConfig *config, LinphoneAuthInfo *obj, int pos)
 104 {
 105         char key[50];
 106         sprintf(key,"auth_info_%i",pos);
 107         lp_config_clean_section(config,key);
 108
 109         if (obj==NULL){
 110                 return;
 111         }
 112         if (obj->username!=NULL){
 113                 lp_config_set_string(config,key,"username",obj->username);
 114         }
 115         if (obj->userid!=NULL){
 116                 lp_config_set_string(config,key,"userid",obj->userid);
 117         }
 118         if (obj->passwd!=NULL){
 119                 lp_config_set_string(config,key,"passwd",obj->passwd);
 120         }
 121         if (obj->ha1!=NULL){
 122                 lp_config_set_string(config,key,"ha1",obj->ha1);
 123         }
 124         if (obj->realm!=NULL){
 125                 lp_config_set_string(config,key,"realm",obj->realm);
 126         }
 127 }
 128
 129 LinphoneAuthInfo *linphone_auth_info_new_from_config_file(LpConfig * config, int pos)
 130 {
 131         char key[50];
 132         const char *username,*userid,*passwd,*ha1,*realm;
 133
 134         sprintf(key,"auth_info_%i",pos);
 135         if (!lp_config_has_section(config,key)){
 136                 return NULL;
 137         }
 138
 139         username=lp_config_get_string(config,key,"username",NULL);
 140         userid=lp_config_get_string(config,key,"userid",NULL);
 141         passwd=lp_config_get_string(config,key,"passwd",NULL);
 142         ha1=lp_config_get_string(config,key,"ha1",NULL);
 143         realm=lp_config_get_string(config,key,"realm",NULL);
 144         return linphone_auth_info_new(username,userid,passwd,ha1,realm);
 145 }
 146
 147 static bool_t key_match(const char *tmp1, const char *tmp2){
 148         if (tmp1==NULL && tmp2==NULL) return TRUE;
 149         if (tmp1!=NULL && tmp2!=NULL && strcmp(tmp1,tmp2)==0) return TRUE;
 150         return FALSE;
 151
 152 }
 153
 154 static char * remove_quotes(char * input){
 155         char *tmp;
 156         if (*input=='"') input++;
 157         tmp=strchr(input,'"');
 158         if (tmp) *tmp='\0';
 159         return input;
 160 }
 161
 162 static int realm_match(const char *realm1, const char *realm2){
 163         if (realm1==NULL && realm2==NULL) return TRUE;
 164         if (realm1!=NULL && realm2!=NULL){
 165                 if (strcmp(realm1,realm2)==0) return TRUE;
 166                 else{
 167                         char tmp1[128];
 168                         char tmp2[128];
 169                         char *p1,*p2;
 170                         strncpy(tmp1,realm1,sizeof(tmp1)-1);
 171                         strncpy(tmp2,realm2,sizeof(tmp2)-1);
 172                         p1=remove_quotes(tmp1);
 173                         p2=remove_quotes(tmp2);
 174                         return strcmp(p1,p2)==0;
 175                 }
 176         }
 177         return FALSE;
 178 }
 179
 180 /**
 181  * Retrieves a LinphoneAuthInfo previously entered into the LinphoneCore.
 182 **/
 183 LinphoneAuthInfo *linphone_core_find_auth_info(LinphoneCore *lc, const char *realm, const char *username)
 184 {
 185         MSList *elem;
 186         LinphoneAuthInfo *ret=NULL,*candidate=NULL;
 187         for (elem=lc->auth_info;elem!=NULL;elem=elem->next){
 188                 LinphoneAuthInfo *pinfo=(LinphoneAuthInfo*)elem->data;
 189                 if (realm==NULL){
 190                         /*return the authinfo for any realm provided that there is only one for that username*/
 191                         if (key_match(pinfo->username,username)){
 192                                 if (ret!=NULL){
 193                                         ms_warning("There are several auth info for username '%s'",username);
 194                                         return NULL;
 195                                 }
 196                                 ret=pinfo;
 197                         }
 198                 }else{
 199                         /*return the exact authinfo, or an authinfo for which realm was not supplied yet*/
 200                         if (pinfo->realm!=NULL){
 201                                 if (realm_match(pinfo->realm,realm)
 202                                         && key_match(pinfo->username,username))
 203                                         ret=pinfo;
 204                         }else{
 205                                 if (key_match(pinfo->username,username))
 206                                         candidate=pinfo;
 207                         }
 208                 }
 209         }
 210         if (ret==NULL && candidate!=NULL)
 211                 ret=candidate;
 212         return ret;
 213 }
 214
 215 static void refresh_exosip_auth_info(LinphoneCore *lc){
 216         MSList *elem;
 217         eXosip_lock();
 218         eXosip_clear_authentication_info();
 219         for (elem=lc->auth_info;elem!=NULL;elem=ms_list_next(elem)){
 220                 LinphoneAuthInfo *info=(LinphoneAuthInfo*)elem->data;
 221                 char *userid;
 222                 if (info->userid==NULL || info->userid[0]=='\0') userid=info->username;
 223                 else userid=info->userid;
 224                 eXosip_add_authentication_info(info->username,userid,
 225                                 info->passwd,info->ha1,info->realm);
 226         }
 227         eXosip_unlock();
 228 }
 229
 230 /**
 231  * Adds authentication information to the LinphoneCore.
 232  *
 233  * This information will be used during all SIP transacations that require authentication.
 234 **/
 235 void linphone_core_add_auth_info(LinphoneCore *lc, LinphoneAuthInfo *info)
 236 {
 237         MSList *elem;
 238         LinphoneAuthInfo *ai;
 239
 240         /* find if we are attempting to modify an existing auth info */
 241         ai=linphone_core_find_auth_info(lc,info->realm,info->username);
 242         if (ai!=NULL){
 243                 elem=ms_list_find(lc->auth_info,ai);
 244                 if (elem==NULL){
 245                         ms_error("AuthInfo list corruption ?");
 246                         return;
 247                 }
 248                 linphone_auth_info_destroy((LinphoneAuthInfo*)elem->data);
 249                 elem->data=(void *)info;
 250         }else {
 251                 lc->auth_info=ms_list_append(lc->auth_info,(void *)info);
 252         }
 253         refresh_exosip_auth_info(lc);
 254         /* if the user was prompted, re-allow automatic_action */
 255         if (lc->automatic_action>0) lc->automatic_action--;
 256 }
 257
 258
 259 /**
 260  * This method is used to abort a user authentication request initiated by LinphoneCore
 261  * from the auth_info_requested callback of LinphoneCoreVTable.
 262 **/
 263 void linphone_core_abort_authentication(LinphoneCore *lc,  LinphoneAuthInfo *info){
 264         if (lc->automatic_action>0) lc->automatic_action--;
 265 }
 266
 267 /**
 268  * Removes an authentication information object.
 269 **/
 270 void linphone_core_remove_auth_info(LinphoneCore *lc, LinphoneAuthInfo *info){
 271         int len=ms_list_size(lc->auth_info);
 272         int newlen;
 273         int i;
 274         MSList *elem;
 275         lc->auth_info=ms_list_remove(lc->auth_info,info);
 276         newlen=ms_list_size(lc->auth_info);
 277         /*printf("len=%i newlen=%i\n",len,newlen);*/
 278         linphone_auth_info_destroy(info);
 279         for (i=0;i<len;i++){
 280                 linphone_auth_info_write_config(lc->config,NULL,i);
 281         }
 282         for (elem=lc->auth_info,i=0;elem!=NULL;elem=ms_list_next(elem),i++){
 283                 linphone_auth_info_write_config(lc->config,(LinphoneAuthInfo*)elem->data,i);
 284         }
 285         refresh_exosip_auth_info(lc);
 286
 287 }
 288
 289 /**
 290  * Returns an unmodifiable list of currently entered LinphoneAuthInfo.
 291 **/
 292 const MSList *linphone_core_get_auth_info_list(const LinphoneCore *lc){
 293         return lc->auth_info;
 294 }
 295
 296 /**
 297  * Clear all authentication information.
 298 **/
 299 void linphone_core_clear_all_auth_info(LinphoneCore *lc){
 300         MSList *elem;
 301         int i;
 302         eXosip_lock();
 303         eXosip_clear_authentication_info();
 304         eXosip_unlock();
 305         for(i=0,elem=lc->auth_info;elem!=NULL;elem=ms_list_next(elem),i++){
 306                 LinphoneAuthInfo *info=(LinphoneAuthInfo*)elem->data;
 307                 linphone_auth_info_destroy(info);
 308                 linphone_auth_info_write_config(lc->config,NULL,i);
 309         }
 310         ms_list_free(lc->auth_info);
 311         lc->auth_info=NULL;
 312 }
 313
 314 void linphone_authentication_ok(LinphoneCore *lc, eXosip_event_t *ev){
 315         char *prx_realm=NULL,*www_realm=NULL;
 316         osip_proxy_authorization_t *prx_auth;
 317         osip_authorization_t *www_auth;
 318         osip_message_t *msg=ev->request;
 319         char *username;
 320         LinphoneAuthInfo *as=NULL;
 321
 322         username=osip_uri_get_username(msg->from->url);
 323         osip_message_get_proxy_authorization(msg,0,&prx_auth);
 324         osip_message_get_authorization(msg,0,&www_auth);
 325         if (prx_auth!=NULL)
 326                 prx_realm=osip_proxy_authorization_get_realm(prx_auth);
 327         if (www_auth!=NULL)
 328                 www_realm=osip_authorization_get_realm(www_auth);
 329
 330         if (prx_realm==NULL && www_realm==NULL){
 331                 ms_message("No authentication info in the request, ignoring");
 332                 return;
 333         }
 334         /* see if we already have this auth information , not to ask it everytime to the user */
 335         if (prx_realm!=NULL)
 336                 as=linphone_core_find_auth_info(lc,prx_realm,username);
 337         if (www_realm!=NULL)
 338                 as=linphone_core_find_auth_info(lc,www_realm,username);
 339         if (as){
 340                 ms_message("Authentication for user=%s realm=%s is working.",username,prx_realm ? prx_realm : www_realm);
 341                 as->works=TRUE;
 342         }
 343 }
 344
 345
 346 void linphone_core_find_or_ask_for_auth_info(LinphoneCore *lc,const char *username,const char* realm, int tid)
 347 {
 348         LinphoneAuthInfo *as=linphone_core_find_auth_info(lc,realm,username);
 349         if ( as==NULL || (as!=NULL && as->works==FALSE && as->first_time==FALSE)){
 350                 if (lc->vtable.auth_info_requested!=NULL){
 351                         lc->vtable.auth_info_requested(lc,realm,username);
 352                         lc->automatic_action++;/*suspends eXosip_automatic_action until the user supplies a password */
 353                 }
 354         }
 355         if (as) as->first_time=FALSE;
 356 }
 357
 358 void linphone_process_authentication(LinphoneCore *lc, eXosip_event_t *ev)
 359 {
 360         char *prx_realm=NULL,*www_realm=NULL;
 361         osip_proxy_authenticate_t *prx_auth;
 362         osip_www_authenticate_t *www_auth;
 363         osip_message_t *resp=ev->response;
 364         char *username;
 365
 366         /*
 367         if (strcmp(ev->request->sip_method,"REGISTER")==0) {
 368                 gstate_new_state(lc, GSTATE_REG_FAILED, "Authentication required");
 369         }
 370         */
 371
 372         username=osip_uri_get_username(resp->from->url);
 373         prx_auth=(osip_proxy_authenticate_t*)osip_list_get(&resp->proxy_authenticates,0);
 374         www_auth=(osip_proxy_authenticate_t*)osip_list_get(&resp->www_authenticates,0);
 375         if (prx_auth!=NULL)
 376                 prx_realm=osip_proxy_authenticate_get_realm(prx_auth);
 377         if (www_auth!=NULL)
 378                 www_realm=osip_www_authenticate_get_realm(www_auth);
 379
 380         if (prx_realm==NULL && www_realm==NULL){
 381                 ms_warning("No realm in the server response.");
 382                 return;
 383         }
 384         /* see if we already have this auth information , not to ask it everytime to the user */
 385         if (prx_realm!=NULL)
 386                 linphone_core_find_or_ask_for_auth_info(lc,username,prx_realm,ev->tid);
 387         if (www_realm!=NULL)
 388                 linphone_core_find_or_ask_for_auth_info(lc,username,www_realm,ev->tid);
 389 }
 390
 391
 392 /**
 393  * @}
 394 **/