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kamailio/modules/tls/tls_rpc.c

263 lines
7.2 KiB

/*
* TLS module - management interface
*
* Copyright (C) 2005 iptelorg GmbH
* Copyright (C) 2013 Motorola Solutions, Inc.
*
* This file is part of Kamailio, a free SIP server.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/** tls module management interface (rpc).
* @file tls_rpc.c
* @ingroup tls
* Module: @ref tls
*/
#include "../../rpc.h"
#include "../../tcp_conn.h"
#include "../../tcp_info.h"
#include "../../timer.h"
#include "../../cfg/cfg.h"
#include "../../dprint.h"
#include "tls_init.h"
#include "tls_mod.h"
#include "tls_domain.h"
#include "tls_config.h"
#include "tls_util.h"
#include "tls_server.h"
#include "tls_ct_wrq.h"
#include "tls_rpc.h"
#include "tls_cfg.h"
static const char* tls_reload_doc[2] = {
"Reload TLS configuration file",
0
};
static void tls_reload(rpc_t* rpc, void* ctx)
{
tls_domains_cfg_t* cfg;
str tls_domains_cfg_file;
tls_domains_cfg_file = cfg_get(tls, tls_cfg, config_file);
if (!tls_domains_cfg_file.s) {
rpc->fault(ctx, 500, "No TLS configuration file configured");
return;
}
/* Try to delete old configurations first */
collect_garbage();
cfg = tls_load_config(&tls_domains_cfg_file);
if (!cfg) {
rpc->fault(ctx, 500, "Error while loading TLS configuration file"
" (consult server log)");
return;
}
if (tls_fix_domains_cfg(cfg, &srv_defaults, &cli_defaults) < 0) {
rpc->fault(ctx, 500, "Error while fixing TLS configuration"
" (consult server log)");
goto error;
}
if (tls_check_sockets(cfg) < 0) {
rpc->fault(ctx, 500, "No server listening socket found for one of"
" TLS domains (consult server log)");
goto error;
}
DBG("TLS configuration successfuly loaded");
lock_get(tls_domains_cfg_lock);
cfg->next = (*tls_domains_cfg);
*tls_domains_cfg = cfg;
lock_release(tls_domains_cfg_lock);
return;
error:
tls_free_cfg(cfg);
}
static const char* tls_list_doc[2] = {
"List currently open TLS connections",
0
};
extern gen_lock_t* tcpconn_lock;
extern struct tcp_connection** tcpconn_id_hash;
static void tls_list(rpc_t* rpc, void* c)
{
char buf[128];
char src_ip[IP_ADDR_MAX_STR_SIZE];
char dst_ip[IP_ADDR_MAX_STR_SIZE];
void* handle;
char* tls_info;
char* state;
struct tls_extra_data* tls_d;
struct tcp_connection* con;
int i, len, timeout;
TCPCONN_LOCK;
for(i = 0; i < TCP_ID_HASH_SIZE; i++) {
for (con = tcpconn_id_hash[i]; con; con = con->id_next) {
if (con->rcv.proto != PROTO_TLS) continue;
tls_d = con->extra_data;
rpc->add(c, "{", &handle);
/* tcp data */
if ((len = ip_addr2sbuf(&con->rcv.src_ip, src_ip, sizeof(src_ip)))
== 0)
BUG("failed to convert source ip");
src_ip[len] = 0;
if ((len = ip_addr2sbuf(&con->rcv.dst_ip, dst_ip, sizeof(dst_ip)))
== 0)
BUG("failed to convert destination ip");
dst_ip[len] = 0;
timeout = TICKS_TO_S(con->timeout - get_ticks_raw());
rpc->struct_add(handle, "ddsdsd",
"id", con->id,
"timeout", timeout,
"src_ip", src_ip,
"src_port", con->rcv.src_port,
"dst_ip", dst_ip,
"dst_port", con->rcv.dst_port);
if (tls_d) {
if(SSL_get_current_cipher(tls_d->ssl)) {
tls_info = SSL_CIPHER_description(
SSL_get_current_cipher(tls_d->ssl),
buf, sizeof(buf));
len = strlen(buf);
if (len && buf[len - 1] == '\n') buf[len - 1] = '\0';
} else {
tls_info = "unknown";
}
/* tls data */
state = "unknown/error";
lock_get(&con->write_lock);
switch(tls_d->state) {
case S_TLS_NONE:
state = "none/init";
break;
case S_TLS_ACCEPTING:
state = "tls_accept";
break;
case S_TLS_CONNECTING:
state = "tls_connect";
break;
case S_TLS_ESTABLISHED:
state = "established";
break;
}
rpc->struct_add(handle, "sddds",
"cipher", tls_info,
"ct_wq_size", tls_d->ct_wq?
tls_d->ct_wq->queued:0,
"enc_rd_buf", tls_d->enc_rd_buf?
tls_d->enc_rd_buf->size:0,
"flags", tls_d->flags,
"state", state
);
lock_release(&con->write_lock);
} else {
rpc->struct_add(handle, "sddds",
"cipher", "unknown",
"ct_wq_size", 0,
"enc_rd_buf", 0,
"flags", 0,
"state", "pre-init"
);
}
}
}
TCPCONN_UNLOCK;
}
static const char* tls_info_doc[2] = {
"Returns internal tls related info.",
0 };
static void tls_info(rpc_t* rpc, void* c)
{
struct tcp_gen_info ti;
void* handle;
tcp_get_info(&ti);
rpc->add(c, "{", &handle);
rpc->struct_add(handle, "ddd",
"max_connections", ti.tls_max_connections,
"opened_connections", ti.tls_connections_no,
"clear_text_write_queued_bytes", tls_ct_wq_total_bytes());
}
static const char* tls_options_doc[2] = {
"Dumps all the tls config options.",
0 };
static void tls_options(rpc_t* rpc, void* c)
{
void* handle;
rpc->add(c, "{", &handle);
rpc->struct_add(handle, "dSdddSSSSdSSdddddddddddddd",
"force_run", cfg_get(tls, tls_cfg, force_run),
"method", &cfg_get(tls, tls_cfg, method),
"verify_certificate", cfg_get(tls, tls_cfg, verify_cert),
"verify_depth", cfg_get(tls, tls_cfg, verify_depth),
"require_certificate", cfg_get(tls, tls_cfg, require_cert),
"private_key", &cfg_get(tls, tls_cfg, private_key),
"ca_list", &cfg_get(tls, tls_cfg, ca_list),
"certificate", &cfg_get(tls, tls_cfg, certificate),
"cipher_list", &cfg_get(tls, tls_cfg, cipher_list),
"session_cache", cfg_get(tls, tls_cfg, session_cache),
"session_id", &cfg_get(tls, tls_cfg, session_id),
"config", &cfg_get(tls, tls_cfg, config_file),
"log", cfg_get(tls, tls_cfg, log),
"debug", cfg_get(tls, tls_cfg, debug),
"connection_timeout", TICKS_TO_S(cfg_get(tls, tls_cfg, con_lifetime)),
"disable_compression", cfg_get(tls, tls_cfg, disable_compression),
"ssl_release_buffers", cfg_get(tls, tls_cfg, ssl_release_buffers),
"ssl_freelist_max", cfg_get(tls, tls_cfg, ssl_freelist_max),
"ssl_max_send_fragment", cfg_get(tls, tls_cfg, ssl_max_send_fragment),
"ssl_read_ahead", cfg_get(tls, tls_cfg, ssl_read_ahead),
"send_close_notify", cfg_get(tls, tls_cfg, send_close_notify),
"low_mem_threshold1", cfg_get(tls, tls_cfg, low_mem_threshold1),
"low_mem_threshold2", cfg_get(tls, tls_cfg, low_mem_threshold2),
"ct_wq_max", cfg_get(tls, tls_cfg, ct_wq_max),
"con_ct_wq_max", cfg_get(tls, tls_cfg, con_ct_wq_max),
"ct_wq_blk_size", cfg_get(tls, tls_cfg, ct_wq_blk_size)
);
}
rpc_export_t tls_rpc[] = {
{"tls.reload", tls_reload, tls_reload_doc, 0},
{"tls.list", tls_list, tls_list_doc, RET_ARRAY},
{"tls.info", tls_info, tls_info_doc, 0},
{"tls.options",tls_options, tls_options_doc, 0},
{0, 0, 0, 0}
};