mirror of
https://github.com/asterisk/asterisk.git
synced 2025-11-19 08:11:21 +00:00
The large GULP->PJSIP renaming effort.
The general gist is to have a clear boundary between old SIP stuff and new SIP stuff by having the word "SIP" for old stuff and "PJSIP" for new stuff. Here's a brief rundown of the changes: * The word "Gulp" in dialstrings, functions, and CLI commands is now "PJSIP" * chan_gulp.c is now chan_pjsip.c * Function names in chan_gulp.c that were "gulp_*" are now "chan_pjsip_*" * All files that were "res_sip*" are now "res_pjsip*" * The "res_sip" directory is now "res_pjsip" * Files in the "res_pjsip" directory that began with "sip_*" are now "pjsip_*" * The configuration file is now "pjsip.conf" instead of "res_sip.conf" * The module info for all PJSIP-related files now uses "PJSIP" instead of "SIP" * CLI and AMI commands created by Asterisk's PJSIP modules now have "pjsip" as the starting word instead of "sip" git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@395764 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Michelson
213
res/res_pjsip_acl.c
Normal file
213
res/res_pjsip_acl.c
Normal file
@@ -0,0 +1,213 @@
|
||||
/*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/*** MODULEINFO
|
||||
<depend>pjproject</depend>
|
||||
<depend>res_pjsip</depend>
|
||||
<support_level>core</support_level>
|
||||
***/
|
||||
|
||||
#include "asterisk.h"
|
||||
|
||||
#include <pjsip.h>
|
||||
|
||||
#include "asterisk/res_pjsip.h"
|
||||
#include "asterisk/module.h"
|
||||
#include "asterisk/logger.h"
|
||||
#include "asterisk/sorcery.h"
|
||||
#include "asterisk/acl.h"
|
||||
|
||||
/*** DOCUMENTATION
|
||||
<configInfo name="res_pjsip_acl" language="en_US">
|
||||
<synopsis>SIP ACL module</synopsis>
|
||||
<description><para>
|
||||
<emphasis>ACL</emphasis>
|
||||
</para>
|
||||
<para>The ACL module used by <literal>res_pjsip</literal>. This module is
|
||||
independent of <literal>endpoints</literal> and operates on all inbound
|
||||
SIP communication using res_pjsip.
|
||||
</para><para>
|
||||
It should be noted that this module can also reference ACLs from
|
||||
<filename>acl.conf</filename>.
|
||||
</para><para>
|
||||
There are two main ways of creating an access list: <literal>IP-Domain</literal>
|
||||
and <literal>Contact Header</literal>. It is possible to create a combined ACL using
|
||||
both IP and Contact.
|
||||
</para></description>
|
||||
<configFile name="pjsip.conf">
|
||||
<configObject name="acl">
|
||||
<synopsis>Access Control List</synopsis>
|
||||
<configOption name="acl">
|
||||
<synopsis>Name of IP ACL</synopsis>
|
||||
<description><para>
|
||||
This matches sections configured in <literal>acl.conf</literal>
|
||||
</para></description>
|
||||
</configOption>
|
||||
<configOption name="contactacl">
|
||||
<synopsis>Name of Contact ACL</synopsis>
|
||||
<description><para>
|
||||
This matches sections configured in <literal>acl.conf</literal>
|
||||
</para></description>
|
||||
</configOption>
|
||||
<configOption name="contactdeny">
|
||||
<synopsis>List of Contact Header addresses to Deny</synopsis>
|
||||
</configOption>
|
||||
<configOption name="contactpermit">
|
||||
<synopsis>List of Contact Header addresses to Permit</synopsis>
|
||||
</configOption>
|
||||
<configOption name="deny">
|
||||
<synopsis>List of IP-domains to deny access from</synopsis>
|
||||
</configOption>
|
||||
<configOption name="permit">
|
||||
<synopsis>List of IP-domains to allow access from</synopsis>
|
||||
</configOption>
|
||||
<configOption name="type">
|
||||
<synopsis>Must be of type 'security'.</synopsis>
|
||||
</configOption>
|
||||
</configObject>
|
||||
</configFile>
|
||||
</configInfo>
|
||||
***/
|
||||
|
||||
static int apply_acl(pjsip_rx_data *rdata, struct ast_acl_list *acl)
|
||||
{
|
||||
struct ast_sockaddr addr;
|
||||
|
||||
if (ast_acl_list_is_empty(acl)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
memset(&addr, 0, sizeof(addr));
|
||||
ast_sockaddr_parse(&addr, rdata->pkt_info.src_name, PARSE_PORT_FORBID);
|
||||
ast_sockaddr_set_port(&addr, rdata->pkt_info.src_port);
|
||||
|
||||
if (ast_apply_acl(acl, &addr, "SIP ACL: ") != AST_SENSE_ALLOW) {
|
||||
ast_log(LOG_WARNING, "Incoming SIP message from %s did not pass ACL test\n", ast_sockaddr_stringify(&addr));
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int extract_contact_addr(pjsip_contact_hdr *contact, struct ast_sockaddr **addrs)
|
||||
{
|
||||
pjsip_sip_uri *sip_uri;
|
||||
char host[256];
|
||||
|
||||
if (!contact) {
|
||||
return 0;
|
||||
}
|
||||
if (!PJSIP_URI_SCHEME_IS_SIP(contact->uri) && !PJSIP_URI_SCHEME_IS_SIPS(contact->uri)) {
|
||||
return 0;
|
||||
}
|
||||
sip_uri = pjsip_uri_get_uri(contact->uri);
|
||||
ast_copy_pj_str(host, &sip_uri->host, sizeof(host));
|
||||
return ast_sockaddr_resolve(addrs, host, PARSE_PORT_FORBID, AST_AF_UNSPEC);
|
||||
}
|
||||
|
||||
static int apply_contact_acl(pjsip_rx_data *rdata, struct ast_acl_list *contact_acl)
|
||||
{
|
||||
int num_contact_addrs;
|
||||
int forbidden = 0;
|
||||
struct ast_sockaddr *contact_addrs;
|
||||
int i;
|
||||
pjsip_contact_hdr *contact = (pjsip_contact_hdr *)&rdata->msg_info.msg->hdr;
|
||||
|
||||
if (ast_acl_list_is_empty(contact_acl)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
while ((contact = pjsip_msg_find_hdr(rdata->msg_info.msg, PJSIP_H_CONTACT, contact->next))) {
|
||||
num_contact_addrs = extract_contact_addr(contact, &contact_addrs);
|
||||
if (num_contact_addrs <= 0) {
|
||||
continue;
|
||||
}
|
||||
for (i = 0; i < num_contact_addrs; ++i) {
|
||||
if (ast_apply_acl(contact_acl, &contact_addrs[i], "SIP Contact ACL: ") != AST_SENSE_ALLOW) {
|
||||
ast_log(LOG_WARNING, "Incoming SIP message from %s did not pass ACL test\n", ast_sockaddr_stringify(&contact_addrs[i]));
|
||||
forbidden = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
ast_free(contact_addrs);
|
||||
if (forbidden) {
|
||||
/* No use checking other contacts if we already have failed ACL check */
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return forbidden;
|
||||
}
|
||||
|
||||
static int check_acls(void *obj, void *arg, int flags)
|
||||
{
|
||||
struct ast_sip_security *security = obj;
|
||||
pjsip_rx_data *rdata = arg;
|
||||
|
||||
if (apply_acl(rdata, security->acl) ||
|
||||
apply_contact_acl(rdata, security->contact_acl)) {
|
||||
return CMP_MATCH | CMP_STOP;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static pj_bool_t acl_on_rx_msg(pjsip_rx_data *rdata)
|
||||
{
|
||||
RAII_VAR(struct ao2_container *, acls, ast_sorcery_retrieve_by_fields(
|
||||
ast_sip_get_sorcery(), SIP_SORCERY_SECURITY_TYPE,
|
||||
AST_RETRIEVE_FLAG_MULTIPLE | AST_RETRIEVE_FLAG_ALL, NULL), ao2_cleanup);
|
||||
RAII_VAR(struct ast_sip_security *, matched_acl, NULL, ao2_cleanup);
|
||||
|
||||
if (!acls) {
|
||||
ast_log(LOG_ERROR, "Unable to retrieve ACL sorcery data\n");
|
||||
return PJ_FALSE;
|
||||
}
|
||||
|
||||
if ((matched_acl = ao2_callback(acls, 0, check_acls, rdata))) {
|
||||
if (rdata->msg_info.msg->line.req.method.id != PJSIP_ACK_METHOD) {
|
||||
pjsip_endpt_respond_stateless(ast_sip_get_pjsip_endpoint(), rdata, 403, NULL, NULL, NULL);
|
||||
}
|
||||
return PJ_TRUE;
|
||||
}
|
||||
|
||||
return PJ_FALSE;
|
||||
}
|
||||
|
||||
static pjsip_module acl_module = {
|
||||
.name = { "ACL Module", 14 },
|
||||
/* This should run after a logger but before anything else */
|
||||
.priority = 1,
|
||||
.on_rx_request = acl_on_rx_msg,
|
||||
};
|
||||
|
||||
static int load_module(void)
|
||||
{
|
||||
ast_sip_register_service(&acl_module);
|
||||
return AST_MODULE_LOAD_SUCCESS;
|
||||
}
|
||||
|
||||
static int unload_module(void)
|
||||
{
|
||||
ast_sip_unregister_service(&acl_module);
|
||||
return 0;
|
||||
}
|
||||
|
||||
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "PJSIP ACL Resource",
|
||||
.load = load_module,
|
||||
.unload = unload_module,
|
||||
.load_pri = AST_MODPRI_APP_DEPEND,
|
||||
);
|
||||
Reference in New Issue
Block a user