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/*
* capabilities.c
*
* Copyright (C) 2012, 2013 James Booth <boothj5@gmail.com>
*
* This file is part of Profanity.
*
* Profanity is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Profanity is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Profanity. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <openssl/evp.h>
#include <strophe.h>
#include "config.h"
#include "common.h"
#include "capabilities.h"
#include "stanza.h"
static GHashTable *capabilities;
static void _caps_destroy(Capabilities *caps);
void
caps_init(void)
{
capabilities = g_hash_table_new_full(g_str_hash, g_str_equal, g_free,
(GDestroyNotify)_caps_destroy);
}
void
caps_add(const char * const caps_str, const char * const client)
{
Capabilities *new_caps = malloc(sizeof(struct capabilities_t));
if (client != NULL) {
new_caps->client = strdup(client);
} else {
new_caps->client = NULL;
}
g_hash_table_insert(capabilities, strdup(caps_str), new_caps);
}
gboolean
caps_contains(const char * const caps_str)
{
return (g_hash_table_lookup(capabilities, caps_str) != NULL);
}
Capabilities *
caps_get(const char * const caps_str)
{
return g_hash_table_lookup(capabilities, caps_str);
}
char *
caps_get_sha1_str(xmpp_stanza_t *query)
{
GSList *identities = NULL;
GSList *features = NULL;
GSList *form_names = NULL;
GHashTable *forms = g_hash_table_new(g_str_hash, g_str_equal);
GString *s = g_string_new("");
xmpp_stanza_t *child = xmpp_stanza_get_children(query);
while (child != NULL) {
if (g_strcmp0(xmpp_stanza_get_name(child), STANZA_NAME_IDENTITY) == 0) {
char *category = xmpp_stanza_get_attribute(child, "category");
char *type = xmpp_stanza_get_attribute(child, "type");
char *lang = xmpp_stanza_get_attribute(child, "xml:lang");
char *name = xmpp_stanza_get_attribute(child, "name");
GString *identity_str = g_string_new(category);
g_string_append(identity_str, "/");
if (type != NULL) {
g_string_append(identity_str, type);
}
g_string_append(identity_str, "/");
if (lang != NULL) {
g_string_append(identity_str, lang);
}
g_string_append(identity_str, "/");
if (name != NULL) {
g_string_append(identity_str, name);
}
g_string_append(identity_str, "<");
identities = g_slist_insert_sorted(identities, identity_str->str, (GCompareFunc)octet_compare);
} else if (g_strcmp0(xmpp_stanza_get_name(child), STANZA_NAME_FEATURE) == 0) {
char *feature_str = xmpp_stanza_get_attribute(child, "var");
features = g_slist_insert_sorted(features, feature_str, (GCompareFunc)octet_compare);
} else if (g_strcmp0(xmpp_stanza_get_name(child), STANZA_NAME_X) == 0) {
if (strcmp(xmpp_stanza_get_ns(child), STANZA_NS_DATA) == 0) {
DataForm *form = stanza_get_form(child);
form_names = g_slist_insert_sorted(form_names, form->form_type, (GCompareFunc)octet_compare);
g_hash_table_insert(forms, form->form_type, form);
}
}
child = xmpp_stanza_get_next(child);
}
GSList *curr = identities;
while (curr != NULL) {
g_string_append(s, curr->data);
curr = g_slist_next(curr);
}
curr = features;
while (curr != NULL) {
g_string_append(s, curr->data);
g_string_append(s, "<");
curr = g_slist_next(curr);
}
curr = form_names;
while (curr != NULL) {
DataForm *form = g_hash_table_lookup(forms, curr->data);
g_string_append(s, form->form_type);
g_string_append(s, "<");
GSList *curr_field = form->fields;
while (curr_field != NULL) {
FormField *field = curr_field->data;
g_string_append(s, field->var);
GSList *curr_value = field->values;
while (curr_value != NULL) {
g_string_append(s, curr_value->data);
g_string_append(s, "<");
curr_value = g_slist_next(curr_value);
}
curr_field = g_slist_next(curr_value);
}
}
EVP_MD_CTX mdctx;
const EVP_MD *md;
unsigned char md_value[EVP_MAX_MD_SIZE];
unsigned int md_len;
OpenSSL_add_all_digests();
md = EVP_get_digestbyname("SHA1");
EVP_MD_CTX_init(&mdctx);
EVP_DigestInit_ex(&mdctx, md, NULL);
EVP_DigestUpdate(&mdctx, s->str, strlen(s->str));
EVP_DigestFinal_ex(&mdctx, md_value, &md_len);
EVP_MD_CTX_cleanup(&mdctx);
char *result = g_base64_encode(md_value, md_len);
g_string_free(s, TRUE);
g_slist_free(identities);
g_slist_free(features);
return result;
}
xmpp_stanza_t *
caps_get_query_response_stanza(xmpp_ctx_t *ctx)
{
xmpp_stanza_t *query = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(query, STANZA_NAME_QUERY);
xmpp_stanza_set_ns(query, XMPP_NS_DISCO_INFO);
xmpp_stanza_t *identity = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(identity, "identity");
xmpp_stanza_set_attribute(identity, "category", "client");
xmpp_stanza_set_attribute(identity, "type", "pc");
GString *name_str = g_string_new("Profanity ");
g_string_append(name_str, PACKAGE_VERSION);
if (strcmp(PACKAGE_STATUS, "development") == 0) {
g_string_append(name_str, "dev");
}
xmpp_stanza_set_attribute(identity, "name", name_str->str);
xmpp_stanza_t *feature_caps = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(feature_caps, STANZA_NAME_FEATURE);
xmpp_stanza_set_attribute(feature_caps, STANZA_ATTR_VAR, STANZA_NS_CAPS);
xmpp_stanza_t *feature_discoinfo = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(feature_discoinfo, STANZA_NAME_FEATURE);
xmpp_stanza_set_attribute(feature_discoinfo, STANZA_ATTR_VAR, XMPP_NS_DISCO_INFO);
xmpp_stanza_t *feature_muc = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(feature_muc, STANZA_NAME_FEATURE);
xmpp_stanza_set_attribute(feature_muc, STANZA_ATTR_VAR, STANZA_NS_MUC);
xmpp_stanza_t *feature_version = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(feature_version, STANZA_NAME_FEATURE);
xmpp_stanza_set_attribute(feature_version, STANZA_ATTR_VAR, STANZA_NS_VERSION);
xmpp_stanza_add_child(query, identity);
xmpp_stanza_add_child(query, feature_muc);
xmpp_stanza_add_child(query, feature_discoinfo);
xmpp_stanza_add_child(query, feature_caps);
xmpp_stanza_add_child(query, feature_version);
return query;
}
void
caps_close(void)
{
g_hash_table_destroy(capabilities);
}
static void
_caps_destroy(Capabilities *caps)
{
if (caps != NULL) {
FREE_SET_NULL(caps->client);
FREE_SET_NULL(caps);
}
}
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