void sal_process_incoming_message(SalOp *op,const belle_sip_request_event_t *event){ belle_sip_request_t* req = belle_sip_request_event_get_request(event); belle_sip_server_transaction_t* server_transaction = belle_sip_provider_create_server_transaction(op->base.root->prov,req); belle_sip_header_address_t* address; belle_sip_header_from_t* from_header; belle_sip_header_content_type_t* content_type; belle_sip_response_t* resp; int errcode=500; belle_sip_header_call_id_t* call_id = belle_sip_message_get_header_by_type(req,belle_sip_header_call_id_t); belle_sip_header_cseq_t* cseq = belle_sip_message_get_header_by_type(req,belle_sip_header_cseq_t); belle_sip_header_date_t *date=belle_sip_message_get_header_by_type(req,belle_sip_header_date_t); char* from; bool_t plain_text=FALSE; bool_t external_body=FALSE; bool_t cipher_xml=FALSE; bool_t rcs_filetransfer=FALSE; uint8_t *decryptedMessage = NULL; from_header=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_from_t); content_type=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_content_type_t); /* check if we have a xml/cipher message to be decrypted */ if (content_type && (cipher_xml=is_cipher_xml(content_type))) { /* access the zrtp cache to get keys needed to decipher the message */ LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op)); FILE *CACHEFD = fopen(lc->zrtp_secrets_cache, "rb+"); if (CACHEFD == NULL) { ms_warning("Unable to access ZRTP ZID cache to decrypt message"); goto error; } else { size_t cacheSize; char *cacheString; int retval; xmlDocPtr cacheXml; cacheString=ms_load_file_content(CACHEFD, &cacheSize); if (!cacheString){ ms_warning("Unable to load content of ZRTP ZID cache to decrypt message"); goto error; } cacheString[cacheSize] = '\0'; cacheSize += 1; fclose(CACHEFD); cacheXml = xmlParseDoc((xmlChar*)cacheString); ms_free(cacheString); retval = lime_decryptMultipartMessage(cacheXml, (uint8_t *)belle_sip_message_get_body(BELLE_SIP_MESSAGE(req)), &decryptedMessage); if (retval != 0) { ms_warning("Unable to decrypt message, reason : %s - op [%p]", lime_error_code_to_string(retval), op); free(decryptedMessage); xmlFreeDoc(cacheXml); errcode = 488; goto error; } else { /* dump updated cache to a string */ xmlChar *xmlStringOutput; int xmlStringLength; xmlDocDumpFormatMemoryEnc(cacheXml, &xmlStringOutput, &xmlStringLength, "UTF-8", 0); /* write it to the cache file */ CACHEFD = fopen(lc->zrtp_secrets_cache, "wb+"); if (fwrite(xmlStringOutput, 1, xmlStringLength, CACHEFD)<=0){ ms_warning("Fail to write cache"); } xmlFree(xmlStringOutput); fclose(CACHEFD); } xmlFreeDoc(cacheXml); } } rcs_filetransfer=is_rcs_filetransfer(content_type); if (content_type && ((plain_text=is_plain_text(content_type)) || (external_body=is_external_body(content_type)) || (decryptedMessage!=NULL) || rcs_filetransfer)) { SalMessage salmsg; char message_id[256]={0}; if (op->pending_server_trans) belle_sip_object_unref(op->pending_server_trans); op->pending_server_trans=server_transaction; belle_sip_object_ref(op->pending_server_trans); address=belle_sip_header_address_create(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(from_header)) ,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(from_header))); from=belle_sip_object_to_string(BELLE_SIP_OBJECT(address)); snprintf(message_id,sizeof(message_id)-1,"%s%i" ,belle_sip_header_call_id_get_call_id(call_id) ,belle_sip_header_cseq_get_seq_number(cseq)); salmsg.from=from; /* if we just deciphered a message, use the deciphered part(which can be a rcs xml body pointing to the file to retreive from server)*/ if (cipher_xml) { salmsg.text = (char *)decryptedMessage; } else { /* message body wasn't ciphered */ salmsg.text=(plain_text||rcs_filetransfer)?belle_sip_message_get_body(BELLE_SIP_MESSAGE(req)):NULL; } salmsg.url=NULL; salmsg.content_type = NULL; if (rcs_filetransfer) { /* if we have a rcs file transfer, set the type, message body (stored in salmsg.text) contains all needed information to retrieve the file */ salmsg.content_type = "application/vnd.gsma.rcs-ft-http+xml"; } if (external_body && belle_sip_parameters_get_parameter(BELLE_SIP_PARAMETERS(content_type),"URL")) { size_t url_length=strlen(belle_sip_parameters_get_parameter(BELLE_SIP_PARAMETERS(content_type),"URL")); salmsg.url = ms_strdup(belle_sip_parameters_get_parameter(BELLE_SIP_PARAMETERS(content_type),"URL")+1); /* skip first "*/ ((char*)salmsg.url)[url_length-2]='\0'; /*remove trailing "*/ } salmsg.message_id=message_id; salmsg.time=date ? belle_sip_header_date_get_time(date) : time(NULL); op->base.root->callbacks.text_received(op,&salmsg); free(decryptedMessage); belle_sip_object_unref(address); belle_sip_free(from); if (salmsg.url) ms_free((char*)salmsg.url); } else if (content_type && is_im_iscomposing(content_type)) { SalIsComposing saliscomposing; address=belle_sip_header_address_create(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(from_header)) ,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(from_header))); from=belle_sip_object_to_string(BELLE_SIP_OBJECT(address)); saliscomposing.from=from; saliscomposing.text=belle_sip_message_get_body(BELLE_SIP_MESSAGE(req)); op->base.root->callbacks.is_composing_received(op,&saliscomposing); resp = belle_sip_response_create_from_request(req,200); belle_sip_server_transaction_send_response(server_transaction,resp); belle_sip_object_unref(address); belle_sip_free(from); } else { ms_error("Unsupported MESSAGE (content-type not recognized)"); resp = belle_sip_response_create_from_request(req,415); add_message_accept((belle_sip_message_t*)resp); belle_sip_server_transaction_send_response(server_transaction,resp); sal_op_release(op); return; } return; error: resp = belle_sip_response_create_from_request(req, errcode); belle_sip_server_transaction_send_response(server_transaction,resp); sal_op_release(op); }
void sal_process_incoming_message(SalOp *op,const belle_sip_request_event_t *event){ belle_sip_request_t* req = belle_sip_request_event_get_request(event); belle_sip_server_transaction_t* server_transaction = belle_sip_provider_create_server_transaction(op->base.root->prov,req); belle_sip_header_address_t* address; belle_sip_header_from_t* from_header; belle_sip_header_content_type_t* content_type; belle_sip_response_t* resp; belle_sip_header_call_id_t* call_id = belle_sip_message_get_header_by_type(req,belle_sip_header_call_id_t); belle_sip_header_cseq_t* cseq = belle_sip_message_get_header_by_type(req,belle_sip_header_cseq_t); belle_sip_header_date_t *date=belle_sip_message_get_header_by_type(req,belle_sip_header_date_t); char* from; bool_t plain_text=FALSE; bool_t external_body=FALSE; from_header=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_from_t); content_type=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_content_type_t); if (content_type && ((plain_text=is_plain_text(content_type)) || (external_body=is_external_body(content_type)))) { SalMessage salmsg; char message_id[256]={0}; if (op->pending_server_trans) belle_sip_object_unref(op->pending_server_trans); op->pending_server_trans=server_transaction; belle_sip_object_ref(op->pending_server_trans); address=belle_sip_header_address_create(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(from_header)) ,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(from_header))); from=belle_sip_object_to_string(BELLE_SIP_OBJECT(address)); snprintf(message_id,sizeof(message_id)-1,"%s%i" ,belle_sip_header_call_id_get_call_id(call_id) ,belle_sip_header_cseq_get_seq_number(cseq)); salmsg.from=from; salmsg.text=plain_text?belle_sip_message_get_body(BELLE_SIP_MESSAGE(req)):NULL; salmsg.url=NULL; if (external_body && belle_sip_parameters_get_parameter(BELLE_SIP_PARAMETERS(content_type),"URL")) { size_t url_length=strlen(belle_sip_parameters_get_parameter(BELLE_SIP_PARAMETERS(content_type),"URL")); salmsg.url = ms_strdup(belle_sip_parameters_get_parameter(BELLE_SIP_PARAMETERS(content_type),"URL")+1); /* skip first "*/ ((char*)salmsg.url)[url_length-2]='\0'; /*remove trailing "*/ } salmsg.message_id=message_id; salmsg.time=date ? belle_sip_header_date_get_time(date) : time(NULL); op->base.root->callbacks.text_received(op,&salmsg); belle_sip_object_unref(address); belle_sip_free(from); if (salmsg.url) ms_free((char*)salmsg.url); } else if (content_type && is_im_iscomposing(content_type)) { SalIsComposing saliscomposing; address=belle_sip_header_address_create(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(from_header)) ,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(from_header))); from=belle_sip_object_to_string(BELLE_SIP_OBJECT(address)); saliscomposing.from=from; saliscomposing.text=belle_sip_message_get_body(BELLE_SIP_MESSAGE(req)); op->base.root->callbacks.is_composing_received(op,&saliscomposing); resp = belle_sip_response_create_from_request(req,200); belle_sip_server_transaction_send_response(server_transaction,resp); belle_sip_object_unref(address); belle_sip_free(from); } else { ms_error("Unsupported MESSAGE with content type [%s/%s]",belle_sip_header_content_type_get_type(content_type) ,belle_sip_header_content_type_get_subtype(content_type)); resp = belle_sip_response_create_from_request(req,415); add_message_accept((belle_sip_message_t*)resp); belle_sip_server_transaction_send_response(server_transaction,resp); return; } }