static char *
_get_caps_key(xmpp_stanza_t * const stanza)
{
char *from = xmpp_stanza_get_attribute(stanza, STANZA_ATTR_FROM);
char *hash_type = stanza_caps_get_hash(stanza);
char *node = stanza_get_caps_str(stanza);
char *caps_key = NULL;
char *id = NULL;
log_debug("Presence contains capabilities.");
if (node == NULL) {
return NULL;
}
// xep-0115
if ((hash_type != NULL) && (strcmp(hash_type, "sha-1") == 0)) {
log_debug("Hash type %s supported.", hash_type);
caps_key = strdup(node);
id = create_unique_id("caps");
_send_caps_request(node, caps_key, id, from);
free(id);
// unsupported hash or legacy capabilities
} else {
if (hash_type != NULL) {
log_debug("Hash type %s unsupported.", hash_type);
} else {
log_debug("No hash type, using legacy capabilities.");
}
guint from_hash = g_str_hash(from);
char from_hash_str[9];
g_snprintf(from_hash_str, sizeof(from_hash_str), "%08x", from_hash);
caps_key = strdup(from_hash_str);
GString *id_str = g_string_new("capsreq_");
g_string_append(id_str, from_hash_str);
id = id_str->str;
_send_caps_request(node, caps_key, id, from);
g_string_free(id_str, TRUE);
}
g_free(node);
return caps_key;
}
static void
_handle_caps(xmpp_stanza_t *const stanza)
{
char *from = xmpp_stanza_get_attribute(stanza, STANZA_ATTR_FROM);
if (from) {
char *hash = stanza_caps_get_hash(stanza);
// hash supported xep-0115
if (g_strcmp0(hash, "sha-1") == 0) {
log_info("Hash %s supported");
char *ver = stanza_get_caps_ver(stanza);
if (ver) {
if (caps_contains(ver)) {
log_info("Capabilities cached: %s", ver);
caps_map(from, ver);
} else {
log_info("Capabilities not cached: %s, sending service discovery request", ver);
char *node = stanza_caps_get_node(stanza);
char *id = create_unique_id("caps");
iq_send_caps_request(from, id, node, ver);
free(id);
}
}
// no hash, or not supported
} else {
if (hash) {
log_info("Hash %s not supported, not sending service discovery request");
// send service discovery request, cache against from full jid
} else {
log_info("No hash specified, not sending service discovery request");
// do legacy
}
}
}
}
