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         return obj;
  55 }
  56
  57 /**
  58  * Sets the password.
  59 **/
  60 void linphone_auth_info_set_passwd(LinphoneAuthInfo *info, const char *passwd){
  61         if (info->passwd!=NULL) {
  62                 ms_free(info->passwd);
  63                 info->passwd=NULL;
  64         }
  65         if (passwd!=NULL && (strlen(passwd)>0)) info->passwd=ms_strdup(passwd);
  66 }
  67
  68 /**
  69  * Sets the username.
  70 **/
  71 void linphone_auth_info_set_username(LinphoneAuthInfo *info, const char *username){
  72         if (info->username){
  73                 ms_free(info->username);
  74                 info->username=NULL;
  75         }
  76         if (username && strlen(username)>0) info->username=ms_strdup(username);
  77 }
  78
  79 /**
  80  * Sets userid.
  81 **/
  82 void linphone_auth_info_set_userid(LinphoneAuthInfo *info, const char *userid){
  83         if (info->userid){
  84                 ms_free(info->userid);
  85                 info->userid=NULL;
  86         }
  87         if (userid && strlen(userid)>0) info->userid=ms_strdup(userid);
  88 }
  89
  90 /**
  91  * Destroys a LinphoneAuthInfo object.
  92 **/
  93 void linphone_auth_info_destroy(LinphoneAuthInfo *obj){
  94         if (obj->username!=NULL) ms_free(obj->username);
  95         if (obj->userid!=NULL) ms_free(obj->userid);
  96         if (obj->passwd!=NULL) ms_free(obj->passwd);
  97         if (obj->ha1!=NULL) ms_free(obj->ha1);
  98         if (obj->realm!=NULL) ms_free(obj->realm);
  99         ms_free(obj);
 100 }
 101
 102 void linphone_auth_info_write_config(LpConfig *config, LinphoneAuthInfo *obj, int pos)
 103 {
 104         char key[50];
 105         sprintf(key,"auth_info_%i",pos);
 106         lp_config_clean_section(config,key);
 107
 108         if (obj==NULL){
 109                 return;
 110         }
 111         if (obj->username!=NULL){
 112                 lp_config_set_string(config,key,"username",obj->username);
 113         }
 114         if (obj->userid!=NULL){
 115                 lp_config_set_string(config,key,"userid",obj->userid);
 116         }
 117         if (obj->passwd!=NULL){
 118                 lp_config_set_string(config,key,"passwd",obj->passwd);
 119         }
 120         if (obj->ha1!=NULL){
 121                 lp_config_set_string(config,key,"ha1",obj->ha1);
 122         }
 123         if (obj->realm!=NULL){
 124                 lp_config_set_string(config,key,"realm",obj->realm);
 125         }
 126 }
 127
 128 LinphoneAuthInfo *linphone_auth_info_new_from_config_file(LpConfig * config, int pos)
 129 {
 130         char key[50];
 131         const char *username,*userid,*passwd,*ha1,*realm;
 132
 133         sprintf(key,"auth_info_%i",pos);
 134         if (!lp_config_has_section(config,key)){
 135                 return NULL;
 136         }
 137
 138         username=lp_config_get_string(config,key,"username",NULL);
 139         userid=lp_config_get_string(config,key,"userid",NULL);
 140         passwd=lp_config_get_string(config,key,"passwd",NULL);
 141         ha1=lp_config_get_string(config,key,"ha1",NULL);
 142         realm=lp_config_get_string(config,key,"realm",NULL);
 143         return linphone_auth_info_new(username,userid,passwd,ha1,realm);
 144 }
 145
 146 static bool_t key_match(const char *tmp1, const char *tmp2){
 147         if (tmp1==NULL && tmp2==NULL) return TRUE;
 148         if (tmp1!=NULL && tmp2!=NULL && strcmp(tmp1,tmp2)==0) return TRUE;
 149         return FALSE;
 150
 151 }
 152
 153 static char * remove_quotes(char * input){
 154         char *tmp;
 155         if (*input=='"') input++;
 156         tmp=strchr(input,'"');
 157         if (tmp) *tmp='\0';
 158         return input;
 159 }
 160
 161 static int realm_match(const char *realm1, const char *realm2){
 162         if (realm1==NULL && realm2==NULL) return TRUE;
 163         if (realm1!=NULL && realm2!=NULL){
 164                 if (strcmp(realm1,realm2)==0) return TRUE;
 165                 else{
 166                         char tmp1[128];
 167                         char tmp2[128];
 168                         char *p1,*p2;
 169                         strncpy(tmp1,realm1,sizeof(tmp1)-1);
 170                         strncpy(tmp2,realm2,sizeof(tmp2)-1);
 171                         p1=remove_quotes(tmp1);
 172                         p2=remove_quotes(tmp2);
 173                         return strcmp(p1,p2)==0;
 174                 }
 175         }
 176         return FALSE;
 177 }
 178
 179 /**
 180  * Retrieves a LinphoneAuthInfo previously entered into the LinphoneCore.
 181 **/
 182 LinphoneAuthInfo *linphone_core_find_auth_info(LinphoneCore *lc, const char *realm, const char *username)
 183 {
 184         MSList *elem;
 185         LinphoneAuthInfo *ret=NULL,*candidate=NULL;
 186         for (elem=lc->auth_info;elem!=NULL;elem=elem->next){
 187                 LinphoneAuthInfo *pinfo=(LinphoneAuthInfo*)elem->data;
 188                 if (realm==NULL){
 189                         /*return the authinfo for any realm provided that there is only one for that username*/
 190                         if (key_match(pinfo->username,username)){
 191                                 if (ret!=NULL){
 192                                         ms_warning("There are several auth info for username '%s'",username);
 193                                         return NULL;
 194                                 }
 195                                 ret=pinfo;
 196                         }
 197                 }else{
 198                         /*return the exact authinfo, or an authinfo for which realm was not supplied yet*/
 199                         if (pinfo->realm!=NULL){
 200                                 if (realm_match(pinfo->realm,realm)
 201                                         && key_match(pinfo->username,username))
 202                                         ret=pinfo;
 203                         }else{
 204                                 if (key_match(pinfo->username,username))
 205                                         candidate=pinfo;
 206                         }
 207                 }
 208         }
 209         if (ret==NULL && candidate!=NULL)
 210                 ret=candidate;
 211         return ret;
 212 }
 213
 214 static void refresh_exosip_auth_info(LinphoneCore *lc){
 215         MSList *elem;
 216         eXosip_lock();
 217         eXosip_clear_authentication_info();
 218         for (elem=lc->auth_info;elem!=NULL;elem=ms_list_next(elem)){
 219                 LinphoneAuthInfo *info=(LinphoneAuthInfo*)elem->data;
 220                 char *userid;
 221                 if (info->userid==NULL || info->userid[0]=='\0') userid=info->username;
 222                 else userid=info->userid;
 223                 eXosip_add_authentication_info(info->username,userid,
 224                                 info->passwd,info->ha1,info->realm);
 225         }
 226         eXosip_unlock();
 227 }
 228
 229 /**
 230  * Adds authentication information to the LinphoneCore.
 231  *
 232  * This information will be used during all SIP transacations that require authentication.
 233 **/
 234 void linphone_core_add_auth_info(LinphoneCore *lc, LinphoneAuthInfo *info)
 235 {
 236         MSList *elem;
 237         LinphoneAuthInfo *ai;
 238
 239         /* find if we are attempting to modify an existing auth info */
 240         ai=linphone_core_find_auth_info(lc,info->realm,info->username);
 241         if (ai!=NULL){
 242                 elem=ms_list_find(lc->auth_info,ai);
 243                 if (elem==NULL){
 244                         ms_error("AuthInfo list corruption ?");
 245                         return;
 246                 }
 247                 linphone_auth_info_destroy((LinphoneAuthInfo*)elem->data);
 248                 elem->data=(void *)info;
 249         }else {
 250                 lc->auth_info=ms_list_append(lc->auth_info,(void *)info);
 251         }
 252         refresh_exosip_auth_info(lc);
 253         /* if the user was prompted, re-allow automatic_action */
 254 }
 255
 256
 257 /**
 258  * This method is used to abort a user authentication request initiated by LinphoneCore
 259  * from the auth_info_requested callback of LinphoneCoreVTable.
 260 **/
 261 void linphone_core_abort_authentication(LinphoneCore *lc,  LinphoneAuthInfo *info){
 262         if (lc->automatic_action>0) lc->automatic_action--;
 263 }
 264
 265 /**
 266  * Removes an authentication information object.
 267 **/
 268 void linphone_core_remove_auth_info(LinphoneCore *lc, LinphoneAuthInfo *info){
 269         int len=ms_list_size(lc->auth_info);
 270         int newlen;
 271         int i;
 272         MSList *elem;
 273         lc->auth_info=ms_list_remove(lc->auth_info,info);
 274         newlen=ms_list_size(lc->auth_info);
 275         /*printf("len=%i newlen=%i\n",len,newlen);*/
 276         linphone_auth_info_destroy(info);
 277         for (i=0;i<len;i++){
 278                 linphone_auth_info_write_config(lc->config,NULL,i);
 279         }
 280         for (elem=lc->auth_info,i=0;elem!=NULL;elem=ms_list_next(elem),i++){
 281                 linphone_auth_info_write_config(lc->config,(LinphoneAuthInfo*)elem->data,i);
 282         }
 283         refresh_exosip_auth_info(lc);
 284
 285 }
 286
 287 /**
 288  * Returns an unmodifiable list of currently entered LinphoneAuthInfo.
 289 **/
 290 const MSList *linphone_core_get_auth_info_list(const LinphoneCore *lc){
 291         return lc->auth_info;
 292 }
 293
 294 /**
 295  * Clear all authentication information.
 296 **/
 297 void linphone_core_clear_all_auth_info(LinphoneCore *lc){
 298         MSList *elem;
 299         int i;
 300         eXosip_lock();
 301         eXosip_clear_authentication_info();
 302         eXosip_unlock();
 303         for(i=0,elem=lc->auth_info;elem!=NULL;elem=ms_list_next(elem),i++){
 304                 LinphoneAuthInfo *info=(LinphoneAuthInfo*)elem->data;
 305                 linphone_auth_info_destroy(info);
 306                 linphone_auth_info_write_config(lc->config,NULL,i);
 307         }
 308         ms_list_free(lc->auth_info);
 309         lc->auth_info=NULL;
 310 }
 311
 312 void linphone_authentication_ok(LinphoneCore *lc, eXosip_event_t *ev){
 313         char *prx_realm=NULL,*www_realm=NULL;
 314         osip_proxy_authorization_t *prx_auth;
 315         osip_authorization_t *www_auth;
 316         osip_message_t *msg=ev->request;
 317         char *username;
 318         LinphoneAuthInfo *as=NULL;
 319
 320         username=osip_uri_get_username(msg->from->url);
 321         osip_message_get_proxy_authorization(msg,0,&prx_auth);
 322         osip_message_get_authorization(msg,0,&www_auth);
 323         if (prx_auth!=NULL)
 324                 prx_realm=osip_proxy_authorization_get_realm(prx_auth);
 325         if (www_auth!=NULL)
 326                 www_realm=osip_authorization_get_realm(www_auth);
 327
 328         if (prx_realm==NULL && www_realm==NULL){
 329                 ms_message("No authentication info in the request, ignoring");
 330                 return;
 331         }
 332         /* see if we already have this auth information , not to ask it everytime to the user */
 333         if (prx_realm!=NULL)
 334                 as=linphone_core_find_auth_info(lc,prx_realm,username);
 335         if (www_realm!=NULL)
 336                 as=linphone_core_find_auth_info(lc,www_realm,username);
 337         if (as){
 338                 ms_message("Authentication for user=%s realm=%s is working.",username,prx_realm ? prx_realm : www_realm);
 339                 as->works=TRUE;
 340         }
 341 }
 342
 343
 344 void linphone_core_find_or_ask_for_auth_info(LinphoneCore *lc,const char *username,const char* realm, int tid)
 345 {
 346         LinphoneAuthInfo *as=linphone_core_find_auth_info(lc,realm,username);
 347         if ( as==NULL || (as!=NULL && as->works==FALSE && as->first_time==FALSE)){
 348                 if (lc->vtable.auth_info_requested!=NULL){
 349                         lc->vtable.auth_info_requested(lc,realm,username);
 350                         lc->automatic_action++;/*suspends eXosip_automatic_action until the user supplies a password */
 351                 }
 352         }
 353         if (as) as->first_time=FALSE;
 354 }
 355
 356 void linphone_process_authentication(LinphoneCore *lc, eXosip_event_t *ev)
 357 {
 358         char *prx_realm=NULL,*www_realm=NULL;
 359         osip_proxy_authenticate_t *prx_auth;
 360         osip_www_authenticate_t *www_auth;
 361         osip_message_t *resp=ev->response;
 362         char *username;
 363
 364         /*
 365         if (strcmp(ev->request->sip_method,"REGISTER")==0) {
 366                 gstate_new_state(lc, GSTATE_REG_FAILED, "Authentication required");
 367         }
 368         */
 369
 370         username=osip_uri_get_username(resp->from->url);
 371         prx_auth=(osip_proxy_authenticate_t*)osip_list_get(&resp->proxy_authenticates,0);
 372         www_auth=(osip_proxy_authenticate_t*)osip_list_get(&resp->www_authenticates,0);
 373         if (prx_auth!=NULL)
 374                 prx_realm=osip_proxy_authenticate_get_realm(prx_auth);
 375         if (www_auth!=NULL)
 376                 www_realm=osip_www_authenticate_get_realm(www_auth);
 377
 378         if (prx_realm==NULL && www_realm==NULL){
 379                 ms_warning("No realm in the server response.");
 380                 return;
 381         }
 382         /* see if we already have this auth information , not to ask it everytime to the user */
 383         if (prx_realm!=NULL)
 384                 linphone_core_find_or_ask_for_auth_info(lc,username,prx_realm,ev->tid);
 385         if (www_realm!=NULL)
 386                 linphone_core_find_or_ask_for_auth_info(lc,username,www_realm,ev->tid);
 387 }
 388
 389
 390 /**
 391  * @}
 392 **/