/*
* this function is to avoid logging too much or non-ascii data received.
*/
static char *make_logbuf(belle_sip_log_level level, const char *buffer, size_t size){
char *logbuf;
char truncate_msg[128]={0};
int limit=7000; /*big message when many ice candidates*/
if (!belle_sip_log_level_enabled(level)){
return belle_sip_malloc0(1);
}
limit=find_non_printable(buffer,MIN(size,limit));
if (limit==0){
snprintf(truncate_msg,sizeof(truncate_msg)-1,"... (binary data)");
} else if (size>limit){
snprintf(truncate_msg,sizeof(truncate_msg)-1,"... (first %i bytes shown)",limit);
size=limit;
}
if (truncate_msg[0]!=0){
size+=sizeof(truncate_msg);
}
logbuf=belle_sip_malloc(size+1);
strncpy(logbuf,buffer,limit);
if (truncate_msg[0]!=0){
strncpy(logbuf+limit,truncate_msg,sizeof(truncate_msg));
}
logbuf[size]='\0';
return logbuf;
}
/*
* this function is to avoid logging too much or non-ascii data received.
*/
static char *make_logbuf(belle_sip_log_level level, const char *buffer, size_t size){
char *logbuf;
char truncate_msg[128]={0};
int limit=3000;
size_t non_ascii_pos;
if (!belle_sip_log_level_enabled(level)){
return belle_sip_malloc0(1);
}
non_ascii_pos=find_non_asci(buffer,MIN(size,limit));
if (non_ascii_pos<2){
limit=0;
snprintf(truncate_msg,sizeof(truncate_msg)-1,"... (binary data)");
}else limit=non_ascii_pos;
if (limit!=0 && size>limit){
snprintf(truncate_msg,sizeof(truncate_msg)-1," ... (first %i bytes shown)",limit);
size=limit;
}
if (size<limit)
limit=size;
if (truncate_msg[0]!=0){
size+=sizeof(truncate_msg);
}
logbuf=belle_sip_malloc(size+1);
strncpy(logbuf,buffer,limit);
if (truncate_msg[0]!=0){
strncpy(logbuf+limit,truncate_msg,sizeof(truncate_msg));
}
logbuf[size]='\0';
return logbuf;
}
void belle_sip_logv(int level, const char *fmt, va_list args)
{
if (belle_sip_logv_out!=NULL && belle_sip_log_level_enabled(level))
belle_sip_logv_out(level,fmt,args);
if ((level)==BELLE_SIP_LOG_FATAL) abort();
}
static void belle_sip_main_loop_iterate(belle_sip_main_loop_t *ml){
size_t pfd_size = ml->nsources * sizeof(belle_sip_pollfd_t);
belle_sip_pollfd_t *pfd=(belle_sip_pollfd_t*)belle_sip_malloc0(pfd_size);
int i=0;
belle_sip_source_t *s;
belle_sip_list_t *elem,*next;
uint64_t min_time_ms=(uint64_t)-1;
int duration=-1;
int ret;
uint64_t cur;
belle_sip_list_t *to_be_notified=NULL;
int can_clean=belle_sip_object_pool_cleanable(ml->pool); /*iterate might not be called by the thread that created the main loop*/
belle_sip_object_pool_t *tmp_pool=NULL;
if (!can_clean){
/*Push a temporary pool for the time of the iterate loop*/
tmp_pool=belle_sip_object_pool_push();
}
/*Step 1: prepare the pollfd table and get the next timeout value */
for(elem=ml->sources;elem!=NULL;elem=next){
next=elem->next;
s=(belle_sip_source_t*)elem->data;
if (!s->cancelled){
if (s->fd!=(belle_sip_fd_t)-1){
belle_sip_source_to_poll(s,pfd,i);
++i;
}
if (s->timeout>=0){
if (min_time_ms>s->expire_ms){
min_time_ms=s->expire_ms;
}
}
}
}
if (min_time_ms!=(uint64_t)-1 ){
int64_t diff;
/* compute the amount of time to wait for shortest timeout*/
cur=belle_sip_time_ms();
diff=min_time_ms-cur;
if (diff>0)
duration=(int)diff;
else
duration=0;
}
/* do the poll */
ret=belle_sip_poll(pfd,i,duration);
if (ret==-1){
goto end;
}
/* Step 2: examine poll results and determine the list of source to be notified */
cur=belle_sip_time_ms();
for(elem=ml->sources;elem!=NULL;elem=elem->next){
unsigned revents=0;
s=(belle_sip_source_t*)elem->data;
if (!s->cancelled){
if (s->fd!=(belle_sip_fd_t)-1){
if (s->notify_required) { /*for testing purpose to force channel to read*/
revents=BELLE_SIP_EVENT_READ;
s->notify_required=0; /*reset*/
} else {
revents=belle_sip_source_get_revents(s,pfd);
}
s->revents=revents;
}
if (revents!=0 || (s->timeout>=0 && cur>=s->expire_ms)){
to_be_notified=belle_sip_list_append(to_be_notified,belle_sip_object_ref(s));
s->expired=TRUE;
if (s->revents==0)
s->revents=BELLE_SIP_EVENT_TIMEOUT;
}
}else to_be_notified=belle_sip_list_append(to_be_notified,belle_sip_object_ref(s));
}
/* Step 3: notify those to be notified */
for(elem=to_be_notified;elem!=NULL;){
s=(belle_sip_source_t*)elem->data;
next=elem->next;
if (!s->cancelled){
if (s->timeout > 0 && belle_sip_log_level_enabled(BELLE_SIP_LOG_DEBUG)) {
/*to avoid too many traces*/
char *objdesc=belle_sip_object_to_string((belle_sip_object_t*)s);
belle_sip_debug("source %s notified revents=%u, timeout=%i",objdesc,revents,s->timeout);
belle_sip_free(objdesc);
}
ret=s->notify(s->data,s->revents);
if (ret==BELLE_SIP_STOP || s->oneshot){
/*this source needs to be removed*/
belle_sip_main_loop_remove_source(ml,s);
}else if (s->revents==BELLE_SIP_EVENT_TIMEOUT){
/*timeout needs to be started again */
if (ret==BELLE_SIP_CONTINUE_WITHOUT_CATCHUP){
s->expire_ms=cur+s->timeout;
}else{
s->expire_ms+=s->timeout;
}
s->expired=FALSE;
}
}else belle_sip_main_loop_remove_source(ml,s);
belle_sip_object_unref(s);
belle_sip_free(elem); /*free just the element*/
elem=next;
}
if (can_clean) belle_sip_object_pool_clean(ml->pool);
else if (tmp_pool) belle_sip_object_unref(tmp_pool);
end:
belle_sip_free(pfd);
}