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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2013, Digium, Inc.
*
* Mark Michelson <mmichelson@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
#include "asterisk.h"
#include <pjsip.h>
#include <pjlib.h>
#include "asterisk/res_pjsip.h"
#include "asterisk/logger.h"
#include "asterisk/sorcery.h"
#include "include/res_pjsip_private.h"
static void auth_destroy(void *obj)
{
struct ast_sip_auth *auth = obj;
ast_string_field_free_memory(auth);
}
static void *auth_alloc(const char *name)
{
struct ast_sip_auth *auth = ast_sorcery_generic_alloc(sizeof(*auth), auth_destroy);
if (!auth) {
return NULL;
}
if (ast_string_field_init(auth, 64)) {
ao2_cleanup(auth);
return NULL;
}
return auth;
}
static int auth_type_handler(const struct aco_option *opt, struct ast_variable *var, void *obj)
{
struct ast_sip_auth *auth = obj;
if (!strcasecmp(var->value, "userpass")) {
auth->type = AST_SIP_AUTH_TYPE_USER_PASS;
} else if (!strcasecmp(var->value, "md5")) {
auth->type = AST_SIP_AUTH_TYPE_MD5;
} else {
ast_log(LOG_WARNING, "Unknown authentication storage type '%s' specified for %s\n",
var->value, var->name);
return -1;
}
return 0;
}
static const char *auth_types_map[] = {
[AST_SIP_AUTH_TYPE_USER_PASS] = "userpass",
[AST_SIP_AUTH_TYPE_MD5] = "md5"
};
const char *ast_sip_auth_type_to_str(enum ast_sip_auth_type type)
{
return ARRAY_IN_BOUNDS(type, auth_types_map) ?
auth_types_map[type] : "";
}
static int auth_type_to_str(const void *obj, const intptr_t *args, char **buf)
{
const struct ast_sip_auth *auth = obj;
*buf = ast_strdup(ast_sip_auth_type_to_str(auth->type));
return 0;
}
static int auth_apply(const struct ast_sorcery *sorcery, void *obj)
{
struct ast_sip_auth *auth = obj;
int res = 0;
if (ast_strlen_zero(auth->auth_user)) {
ast_log(LOG_ERROR, "No authentication username for auth '%s'\n",
ast_sorcery_object_get_id(auth));
return -1;
}
switch (auth->type) {
case AST_SIP_AUTH_TYPE_USER_PASS:
if (ast_strlen_zero(auth->auth_pass)) {
ast_log(LOG_ERROR, "'userpass' authentication specified but no"
"password specified for auth '%s'\n", ast_sorcery_object_get_id(auth));
res = -1;
}
break;
case AST_SIP_AUTH_TYPE_MD5:
if (ast_strlen_zero(auth->md5_creds)) {
ast_log(LOG_ERROR, "'md5' authentication specified but no md5_cred"
"specified for auth '%s'\n", ast_sorcery_object_get_id(auth));
res = -1;
} else if (strlen(auth->md5_creds) != PJSIP_MD5STRLEN) {
ast_log(LOG_ERROR, "'md5' authentication requires digest of size '%d', but"
"digest is '%d' in size for auth '%s'\n", PJSIP_MD5STRLEN, (int)strlen(auth->md5_creds),
ast_sorcery_object_get_id(auth));
res = -1;
}
break;
case AST_SIP_AUTH_TYPE_ARTIFICIAL:
break;
}
return res;
}
int ast_sip_for_each_auth(const struct ast_sip_auth_vector *vector,
ao2_callback_fn on_auth, void *arg)
{
int i;
if (!vector || !AST_VECTOR_SIZE(vector)) {
return 0;
}
for (i = 0; i < AST_VECTOR_SIZE(vector); ++i) {
/* AST_VECTOR_GET is safe to use since the vector is immutable */
RAII_VAR(struct ast_sip_auth *, auth, ast_sorcery_retrieve_by_id(
ast_sip_get_sorcery(), SIP_SORCERY_AUTH_TYPE,
AST_VECTOR_GET(vector,i)), ao2_cleanup);
if (!auth) {
continue;
}
if (on_auth(auth, arg, 0)) {
return -1;
}
}
return 0;
}
static int sip_auth_to_ami(const struct ast_sip_auth *auth,
struct ast_str **buf)
{
return ast_sip_sorcery_object_to_ami(auth, buf);
}
static int format_ami_auth_handler(void *obj, void *arg, int flags)
{
const struct ast_sip_auth *auth = obj;
struct ast_sip_ami *ami = arg;
const struct ast_sip_endpoint *endpoint = ami->arg;
RAII_VAR(struct ast_str *, buf,
ast_sip_create_ami_event("AuthDetail", ami), ast_free);
if (!buf) {
return -1;
}
if (sip_auth_to_ami(auth, &buf)) {
return -1;
}
if (endpoint) {
ast_str_append(&buf, 0, "EndpointName: %s\r\n",
ast_sorcery_object_get_id(endpoint));
}
astman_append(ami->s, "%s\r\n", ast_str_buffer(buf));
return 0;
}
int ast_sip_format_auths_ami(const struct ast_sip_auth_vector *auths,
struct ast_sip_ami *ami)
{
return ast_sip_for_each_auth(auths, format_ami_auth_handler, ami);
}
static int format_ami_endpoint_auth(const struct ast_sip_endpoint *endpoint,
struct ast_sip_ami *ami)
{
ami->arg = (void *)endpoint;
if (ast_sip_format_auths_ami(&endpoint->inbound_auths, ami)) {
return -1;
}
return ast_sip_format_auths_ami(&endpoint->outbound_auths, ami);
}
static struct ast_sip_endpoint_formatter endpoint_auth_formatter = {
.format_ami = format_ami_endpoint_auth
};
/*! \brief Initialize sorcery with auth support */
int ast_sip_initialize_sorcery_auth(struct ast_sorcery *sorcery)
{
ast_sorcery_apply_default(sorcery, SIP_SORCERY_AUTH_TYPE, "config", "pjsip.conf,criteria=type=auth");
if (ast_sorcery_object_register(sorcery, SIP_SORCERY_AUTH_TYPE, auth_alloc, NULL, auth_apply)) {
return -1;
}
ast_sorcery_object_field_register(sorcery, SIP_SORCERY_AUTH_TYPE, "type", "",
OPT_NOOP_T, 0, 0);
ast_sorcery_object_field_register(sorcery, SIP_SORCERY_AUTH_TYPE, "username",
"", OPT_STRINGFIELD_T, 0, STRFLDSET(struct ast_sip_auth, auth_user));
ast_sorcery_object_field_register(sorcery, SIP_SORCERY_AUTH_TYPE, "password",
"", OPT_STRINGFIELD_T, 0, STRFLDSET(struct ast_sip_auth, auth_pass));
ast_sorcery_object_field_register(sorcery, SIP_SORCERY_AUTH_TYPE, "md5_cred",
"", OPT_STRINGFIELD_T, 0, STRFLDSET(struct ast_sip_auth, md5_creds));
ast_sorcery_object_field_register(sorcery, SIP_SORCERY_AUTH_TYPE, "realm",
"", OPT_STRINGFIELD_T, 0, STRFLDSET(struct ast_sip_auth, realm));
ast_sorcery_object_field_register(sorcery, SIP_SORCERY_AUTH_TYPE, "nonce_lifetime",
"32", OPT_UINT_T, 0, FLDSET(struct ast_sip_auth, nonce_lifetime));
ast_sorcery_object_field_register_custom(sorcery, SIP_SORCERY_AUTH_TYPE, "auth_type",
"userpass", auth_type_handler, auth_type_to_str, 0, 0);
ast_sip_register_endpoint_formatter(&endpoint_auth_formatter);
return 0;
}
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