static void do_log_v(prelude_log_t level, const char *file,
const char *function, int line, const char *fmt, va_list ap)
{
int ret;
va_list bkp;
char buf[1024];
ssize_t len = 0;
if ( global_log_cb == do_log_print || global_log_cb == do_log_syslog ) {
len = get_header(level, buf, sizeof(buf));
if ( len < 0 )
return;
}
PRELUDE_VA_COPY(bkp, ap);
ret = vsnprintf(buf + len, sizeof(buf) - len, fmt, ap);
if ( ret < 0 || (size_t) ret >= (sizeof(buf) - len) )
goto out;
if ( level <= PRELUDE_LOG_ERR || level >= PRELUDE_LOG_DEBUG ) {
for ( len += ret; buf[len - 1] == '\n' ; len-- );
snprintf(buf + len, sizeof(buf) - len, " (%s:%d %s)\n", file, line, function);
}
if ( need_to_log(level, log_level) || need_to_log(level, debug_level) ) {
ret = global_log_cb(level, buf);
if ( ret < 0 && global_log_cb == do_log_print ) {
prelude_log_set_flags(PRELUDE_LOG_FLAGS_SYSLOG);
do_log_v(level, file, function, line, fmt, bkp);
goto out;
}
if ( debug_logfile )
fprintf(debug_logfile, "%s", buf);
}
out:
va_end(bkp);
}
// TODO: refactor logging code to use a meshlink_handle_t *.
void logger(meshlink_handle_t *mesh, meshlink_log_level_t level, const char *format, ...) {
if(mesh) {
if(level < mesh->log_level || !mesh->log_cb)
return;
} else {
if(level < global_log_level || !global_log_cb)
return;
}
va_list ap;
char message[1024] = "";
va_start(ap, format);
int len = vsnprintf(message, sizeof message, format, ap);
va_end(ap);
if(len > 0 && len < sizeof message && message[len - 1] == '\n')
message[len - 1] = 0;
if(mesh)
mesh->log_cb(mesh, level, message);
else
global_log_cb(NULL, level, message);
}
