static void process_request_event(void *sal, const belle_sip_request_event_t *event) {
SalOp* op=NULL;
belle_sip_request_t* req = belle_sip_request_event_get_request(event);
belle_sip_dialog_t* dialog=belle_sip_request_event_get_dialog(event);
belle_sip_header_address_t* origin_address;
belle_sip_header_address_t* address;
belle_sip_header_from_t* from_header;
belle_sip_header_to_t* to;
belle_sip_response_t* resp;
belle_sip_header_t *evh;
const char *method=belle_sip_request_get_method(req);
from_header=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_from_t);
if (dialog) {
op=(SalOp*)belle_sip_dialog_get_application_data(dialog);
if (op==NULL || op->state==SalOpStateTerminated){
ms_warning("Receiving request for null or terminated op [%p], ignored",op);
return;
}
}else if (strcmp("INVITE",method)==0) {
op=sal_op_new((Sal*)sal);
op->dir=SalOpDirIncoming;
sal_op_call_fill_cbs(op);
}else if ((strcmp("SUBSCRIBE",method)==0 || strcmp("NOTIFY",method)==0) && (evh=belle_sip_message_get_header(BELLE_SIP_MESSAGE(req),"Event"))!=NULL) {
op=sal_op_new((Sal*)sal);
op->dir=SalOpDirIncoming;
if (strncmp(belle_sip_header_get_unparsed_value(evh),"presence",strlen("presence"))==0){
sal_op_presence_fill_cbs(op);
}else
sal_op_subscribe_fill_cbs(op);
}else if (strcmp("MESSAGE",method)==0) {
op=sal_op_new((Sal*)sal);
op->dir=SalOpDirIncoming;
sal_op_message_fill_cbs(op);
}else if (strcmp("OPTIONS",method)==0) {
resp=belle_sip_response_create_from_request(req,200);
belle_sip_provider_send_response(((Sal*)sal)->prov,resp);
return;
}else if (strcmp("INFO",method)==0) {
resp=belle_sip_response_create_from_request(req,481);/*INFO out of call dialogs are not allowed*/
belle_sip_provider_send_response(((Sal*)sal)->prov,resp);
return;
}else if (strcmp("BYE",method)==0) {
resp=belle_sip_response_create_from_request(req,481);/*out of dialog BYE */
belle_sip_provider_send_response(((Sal*)sal)->prov,resp);
return;
}else {
ms_error("sal process_request_event not implemented yet for method [%s]",belle_sip_request_get_method(req));
resp=belle_sip_response_create_from_request(req,501);
belle_sip_provider_send_response(((Sal*)sal)->prov,resp);
return;
}
if (!op->base.from_address) {
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)));
sal_op_set_from_address(op,(SalAddress*)address);
belle_sip_object_unref(address);
}
if (!op->base.to_address) {
to=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_to_t);
address=belle_sip_header_address_create(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(to))
,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(to)));
sal_op_set_to_address(op,(SalAddress*)address);
belle_sip_object_unref(address);
}
if (!op->base.origin) {
/*set origin uri*/
origin_address=belle_sip_header_address_create(NULL,belle_sip_request_extract_origin(req));
__sal_op_set_network_origin_address(op,(SalAddress*)origin_address);
belle_sip_object_unref(origin_address);
}
if (!op->base.remote_ua) {
sal_op_set_remote_ua(op,BELLE_SIP_MESSAGE(req));
}
if (!op->base.call_id) {
op->base.call_id=ms_strdup(belle_sip_header_call_id_get_call_id(BELLE_SIP_HEADER_CALL_ID(belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req), belle_sip_header_call_id_t))));
}
/*It is worth noting that proxies can (and
will) remove this header field*/
sal_op_set_privacy_from_message(op,(belle_sip_message_t*)req);
sal_op_assign_recv_headers(op,(belle_sip_message_t*)req);
if (op->callbacks.process_request_event) {
op->callbacks.process_request_event(op,event);
} else {
ms_error("sal process_request_event not implemented yet");
}
}
static void process_request_event(void *ud, const belle_sip_request_event_t *event) {
Sal *sal=(Sal*)ud;
SalOp* op=NULL;
belle_sip_request_t* req = belle_sip_request_event_get_request(event);
belle_sip_dialog_t* dialog=belle_sip_request_event_get_dialog(event);
belle_sip_header_address_t* origin_address;
belle_sip_header_address_t* address=NULL;
belle_sip_header_from_t* from_header;
belle_sip_header_to_t* to;
belle_sip_response_t* resp;
belle_sip_header_t *evh;
const char *method=belle_sip_request_get_method(req);
belle_sip_header_contact_t* remote_contact = belle_sip_message_get_header_by_type(req, belle_sip_header_contact_t);
from_header=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_from_t);
if (dialog) {
op=(SalOp*)belle_sip_dialog_get_application_data(dialog);
if (op == NULL && strcmp("NOTIFY",method) == 0) {
/*special case for Dialog created by notify mathing subscribe*/
belle_sip_transaction_t * sub_trans = belle_sip_dialog_get_last_transaction(dialog);
op = (SalOp*)belle_sip_transaction_get_application_data(sub_trans);
}
if (op==NULL || op->state==SalOpStateTerminated){
ms_warning("Receiving request for null or terminated op [%p], ignored",op);
return;
}
}else{
/*handle the case where we are receiving a request with to tag but it is not belonging to any dialog*/
belle_sip_header_to_t *to = belle_sip_message_get_header_by_type(req, belle_sip_header_to_t);
if ((strcmp("INVITE",method)==0 || strcmp("NOTIFY",method)==0) && (belle_sip_header_to_get_tag(to) != NULL)) {
ms_warning("Receiving %s with to-tag but no know dialog here. Rejecting.", method);
resp=belle_sip_response_create_from_request(req,481);
belle_sip_provider_send_response(sal->prov,resp);
return;
/* by default (eg. when a to-tag is present), out of dialog ACK are automatically
handled in lower layers (belle-sip) but in case it misses, it will be forwarded to us */
} else if (strcmp("ACK",method)==0 && (belle_sip_header_to_get_tag(to) == NULL)) {
ms_warning("Receiving ACK without to-tag but no know dialog here. Ignoring");
return;
}
if (strcmp("INVITE",method)==0) {
op=sal_op_new(sal);
op->dir=SalOpDirIncoming;
sal_op_call_fill_cbs(op);
}else if ((strcmp("SUBSCRIBE",method)==0 || strcmp("NOTIFY",method)==0) && (evh=belle_sip_message_get_header(BELLE_SIP_MESSAGE(req),"Event"))!=NULL) {
op=sal_op_new(sal);
op->dir=SalOpDirIncoming;
if (strncmp(belle_sip_header_get_unparsed_value(evh),"presence",strlen("presence"))==0){
sal_op_presence_fill_cbs(op);
}else
sal_op_subscribe_fill_cbs(op);
}else if (strcmp("MESSAGE",method)==0) {
op=sal_op_new(sal);
op->dir=SalOpDirIncoming;
sal_op_message_fill_cbs(op);
}else if (strcmp("OPTIONS",method)==0) {
resp=belle_sip_response_create_from_request(req,200);
belle_sip_provider_send_response(sal->prov,resp);
return;
}else if (strcmp("INFO",method)==0) {
resp=belle_sip_response_create_from_request(req,481);/*INFO out of call dialogs are not allowed*/
belle_sip_provider_send_response(sal->prov,resp);
return;
}else if (strcmp("BYE",method)==0) {
resp=belle_sip_response_create_from_request(req,481);/*out of dialog BYE */
belle_sip_provider_send_response(sal->prov,resp);
return;
}else if (strcmp("CANCEL",method)==0) {
resp=belle_sip_response_create_from_request(req,481);/*out of dialog CANCEL */
belle_sip_provider_send_response(sal->prov,resp);
return;
}else if (sal->enable_test_features && strcmp("PUBLISH",method)==0) {
resp=belle_sip_response_create_from_request(req,200);/*out of dialog PUBLISH */
belle_sip_message_add_header((belle_sip_message_t*)resp,belle_sip_header_create("SIP-Etag","4441929FFFZQOA"));
belle_sip_provider_send_response(sal->prov,resp);
return;
}else {
ms_error("sal process_request_event not implemented yet for method [%s]",belle_sip_request_get_method(req));
resp=belle_sip_response_create_from_request(req,405);
belle_sip_message_add_header(BELLE_SIP_MESSAGE(resp)
,BELLE_SIP_HEADER(belle_sip_header_allow_create("INVITE, CANCEL, ACK, BYE, SUBSCRIBE, NOTIFY, MESSAGE, OPTIONS, INFO")));
belle_sip_provider_send_response(sal->prov,resp);
return;
}
}
if (!op->base.from_address) {
if (belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(from_header)))
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)));
else if ((belle_sip_header_address_get_absolute_uri(BELLE_SIP_HEADER_ADDRESS(from_header))))
address=belle_sip_header_address_create2(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(from_header))
,belle_sip_header_address_get_absolute_uri(BELLE_SIP_HEADER_ADDRESS(from_header)));
else
ms_error("Cannot not find from uri from request [%p]",req);
sal_op_set_from_address(op,(SalAddress*)address);
belle_sip_object_unref(address);
}
if( remote_contact ){
__sal_op_set_remote_contact(op, belle_sip_header_get_unparsed_value(BELLE_SIP_HEADER(remote_contact)));
}
if (!op->base.to_address) {
to=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_to_t);
if (belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(to)))
address=belle_sip_header_address_create(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(to))
,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(to)));
else if ((belle_sip_header_address_get_absolute_uri(BELLE_SIP_HEADER_ADDRESS(to))))
address=belle_sip_header_address_create2(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(to))
,belle_sip_header_address_get_absolute_uri(BELLE_SIP_HEADER_ADDRESS(to)));
else
ms_error("Cannot not find to uri from request [%p]",req);
sal_op_set_to_address(op,(SalAddress*)address);
belle_sip_object_unref(address);
}
if (!op->base.origin) {
/*set origin uri*/
origin_address=belle_sip_header_address_create(NULL,belle_sip_request_extract_origin(req));
__sal_op_set_network_origin_address(op,(SalAddress*)origin_address);
belle_sip_object_unref(origin_address);
}
if (!op->base.remote_ua) {
sal_op_set_remote_ua(op,BELLE_SIP_MESSAGE(req));
}
if (!op->base.call_id) {
op->base.call_id=ms_strdup(belle_sip_header_call_id_get_call_id(BELLE_SIP_HEADER_CALL_ID(belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req), belle_sip_header_call_id_t))));
}
/*It is worth noting that proxies can (and
will) remove this header field*/
sal_op_set_privacy_from_message(op,(belle_sip_message_t*)req);
sal_op_assign_recv_headers(op,(belle_sip_message_t*)req);
if (op->callbacks && op->callbacks->process_request_event) {
op->callbacks->process_request_event(op,event);
} else {
ms_error("sal process_request_event not implemented yet");
}
}
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;
}
}
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);
}
const char *sal_address_get_display_name(const SalAddress* addr){
belle_sip_header_address_t* header_addr = BELLE_SIP_HEADER_ADDRESS(addr);
return belle_sip_header_address_get_displayname(header_addr);
}
