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freeswitch/src/switch_msrp.c

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/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2011-2016, Seven Du <dujinfang@gmail.com>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Seven Du <dujinfang@gmail.com>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
*
*
* msrp.c -- MSRP lib
*
*/
#include <switch.h>
#include <switch_ssl.h>
#include <switch_msrp.h>
#include <switch_stun.h>
#define MSRP_BUFF_SIZE SWITCH_RTP_MAX_BUF_LEN
#define DEBUG_MSRP 0
static struct {
int running;
int debug;
switch_memory_pool_t *pool;
// switch_mutex_t *mutex;
char *ip;
int message_buffer_size;
char *cert;
char *key;
const SSL_METHOD *ssl_method;
SSL_CTX *ssl_ctx;
SSL *ssl;
int ssl_ready;
msrp_socket_t msock;
msrp_socket_t msock_ssl;
} globals;
typedef struct worker_helper{
int debug;
switch_memory_pool_t *pool;
msrp_client_socket_t csock;
} worker_helper_t;
static void msrp_deinit_ssl()
{
if (globals.ssl_ctx) {
SSL_CTX_free(globals.ssl_ctx);
globals.ssl_ctx = NULL;
}
}
static int msrp_init_ssl()
{
const char *err = "";
SSL_library_init();
globals.ssl_method = SSLv23_server_method(); /* create server instance */
globals.ssl_ctx = SSL_CTX_new(globals.ssl_method); /* create context */
assert(globals.ssl_ctx);
globals.ssl_ready = 1;
/* Disable SSLv2 */
SSL_CTX_set_options(globals.ssl_ctx, SSL_OP_NO_SSLv2);
/* Disable SSLv3 */
SSL_CTX_set_options(globals.ssl_ctx, SSL_OP_NO_SSLv3);
/* Disable TLSv1 */
SSL_CTX_set_options(globals.ssl_ctx, SSL_OP_NO_TLSv1);
/* Disable Compression CRIME (Compression Ratio Info-leak Made Easy) */
SSL_CTX_set_options(globals.ssl_ctx, SSL_OP_NO_COMPRESSION);
// /* set the local certificate from CertFile */
// if (!zstr(profile->chain)) {
// if (switch_file_exists(profile->chain, NULL) != SWITCH_STATUS_SUCCESS) {
// err = "SUPPLIED CHAIN FILE NOT FOUND\n";
// goto fail;
// }
// if (!SSL_CTX_use_certificate_chain_file(profile->ssl_ctx, profile->chain)) {
// err = "CERT CHAIN FILE ERROR";
// goto fail;
// }
// }
if (switch_file_exists(globals.cert, NULL) != SWITCH_STATUS_SUCCESS) {
err = "SUPPLIED CERT FILE NOT FOUND\n";
goto fail;
}
if (!SSL_CTX_use_certificate_file(globals.ssl_ctx, globals.cert, SSL_FILETYPE_PEM)) {
err = "CERT FILE ERROR";
goto fail;
}
/* set the private key from KeyFile */
if (switch_file_exists(globals.key, NULL) != SWITCH_STATUS_SUCCESS) {
err = "SUPPLIED KEY FILE NOT FOUND\n";
goto fail;
}
if (!SSL_CTX_use_PrivateKey_file(globals.ssl_ctx, globals.key, SSL_FILETYPE_PEM)) {
err = "PRIVATE KEY FILE ERROR";
goto fail;
}
/* verify private key */
if ( !SSL_CTX_check_private_key(globals.ssl_ctx) ) {
err = "PRIVATE KEY FILE ERROR";
goto fail;
}
SSL_CTX_set_cipher_list(globals.ssl_ctx, "HIGH:!DSS:!aNULL@STRENGTH");
return 1;
fail:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "SSL ERR: %s\n", err);
globals.ssl_ready = 0;
msrp_deinit_ssl();
return 0;
}
SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_global_ip, globals.ip);
static switch_status_t load_config()
{
char *cf = "msrp.conf";
switch_xml_t cfg, xml = NULL, settings, param;
switch_status_t status = SWITCH_STATUS_SUCCESS;
globals.cert = switch_core_sprintf(globals.pool, "%s%swss.pem", SWITCH_GLOBAL_dirs.certs_dir, SWITCH_PATH_SEPARATOR);
globals.key = globals.cert;
if ( switch_file_exists(globals.key, globals.pool) != SWITCH_STATUS_SUCCESS ) {
switch_core_gen_certs(globals.key);
}
if (!(xml = switch_xml_open_cfg(cf, &cfg, NULL))) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Open of %s failed\n", cf);
status = SWITCH_STATUS_FALSE;
return status;
}
if ((settings = switch_xml_child(cfg, "settings"))) {
for (param = switch_xml_child(settings, "param"); param; param = param->next) {
char *var = (char *) switch_xml_attr_soft(param, "name");
char *val = (char *) switch_xml_attr_soft(param, "value");
if (!strcasecmp(var, "listen-ip")) {
set_global_ip(val);
} else if (!strcasecmp(var, "listen-port")) {
globals.msock.port = atoi(val);
} else if (!strcasecmp(var, "listen-ssl-port")) {
globals.msock_ssl.port = atoi(val);
} else if (!strcasecmp(var, "debug")) {
globals.debug = switch_true(val);
} else if (!strcasecmp(var, "secure-cert")) {
globals.cert = switch_core_strdup(globals.pool, val);
} else if (!strcasecmp(var, "secure-key")) {
globals.key = switch_core_strdup(globals.pool, val);
} else if (!strcasecmp(var, "message-buffer-size") && val) {
globals.message_buffer_size = atoi(val);
if (globals.message_buffer_size == 0) globals.message_buffer_size = 50;
}
}
}
switch_xml_free(xml);
return status;
}
static void *SWITCH_THREAD_FUNC msrp_listener(switch_thread_t *thread, void *obj);
static void close_socket(switch_socket_t ** sock)
{
// switch_mutex_lock(globals.sock_mutex);
if (*sock) {
switch_socket_shutdown(*sock, SWITCH_SHUTDOWN_READWRITE);
switch_socket_close(*sock);
*sock = NULL;
}
// switch_mutex_unlock(globals.sock_mutex);
}
static switch_status_t msock_init(char *ip, switch_port_t port, switch_socket_t **sock, switch_memory_pool_t *pool)
{
switch_sockaddr_t *sa;
switch_status_t rv;
rv = switch_sockaddr_info_get(&sa, ip, SWITCH_INET, port, 0, pool);
if (rv) goto sock_fail;
rv = switch_socket_create(sock, switch_sockaddr_get_family(sa), SOCK_STREAM, SWITCH_PROTO_TCP, pool);
if (rv) goto sock_fail;
rv = switch_socket_opt_set(*sock, SWITCH_SO_REUSEADDR, 1);
if (rv) goto sock_fail;
rv = switch_socket_bind(*sock, sa);
if (rv) goto sock_fail;
rv = switch_socket_listen(*sock, 5);
if (rv) goto sock_fail;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Socket up listening on %s:%u\n", ip, port);
return SWITCH_STATUS_SUCCESS;
sock_fail:
return rv;
}
SWITCH_DECLARE(switch_status_t) switch_msrp_init()
{
switch_memory_pool_t *pool;
switch_thread_t *thread;
switch_threadattr_t *thd_attr = NULL;
switch_status_t status;
if (switch_core_new_memory_pool(&pool) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "OH OH no pool\n");
return SWITCH_STATUS_FALSE;
}
memset(&globals, 0, sizeof(globals));
set_global_ip("0.0.0.0");
globals.pool = pool;
globals.msock.port = (switch_port_t)MSRP_LISTEN_PORT;
globals.msock_ssl.port = (switch_port_t)MSRP_SSL_LISTEN_PORT;
globals.msock_ssl.secure = 1;
globals.message_buffer_size = 50;
globals.debug = DEBUG_MSRP;
load_config();
globals.running = 1;
status = msock_init(globals.ip, globals.msock.port, &globals.msock.sock, pool);
if (status == SWITCH_STATUS_SUCCESS) {
switch_threadattr_create(&thd_attr, pool);
// switch_threadattr_detach_set(thd_attr, 1);
switch_threadattr_stacksize_set(thd_attr, SWITCH_THREAD_STACKSIZE);
switch_thread_create(&thread, thd_attr, msrp_listener, &globals.msock, pool);
globals.msock.thread = thread;
}
msrp_init_ssl();
status = msock_init(globals.ip, globals.msock_ssl.port, &globals.msock_ssl.sock, pool);
if (status == SWITCH_STATUS_SUCCESS) {
switch_threadattr_create(&thd_attr, pool);
// switch_threadattr_detach_set(thd_attr, 1);
switch_threadattr_stacksize_set(thd_attr, SWITCH_THREAD_STACKSIZE);
switch_thread_create(&thread, thd_attr, msrp_listener, &globals.msock_ssl, pool);
globals.msock_ssl.thread = thread;
}
return SWITCH_STATUS_SUCCESS;
}
SWITCH_DECLARE(switch_status_t) switch_msrp_destroy()
{
switch_status_t st = SWITCH_STATUS_SUCCESS;
switch_socket_t *sock;
globals.running = 0;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "destroying thread\n");
sock = globals.msock.sock;
close_socket(&sock);
sock = globals.msock_ssl.sock;
close_socket(&sock);
if (globals.msock.thread) switch_thread_join(&st, globals.msock.thread);
if (globals.msock_ssl.thread) switch_thread_join(&st, globals.msock_ssl.thread);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "destroy thread done\n");
globals.msock.thread = NULL;
globals.msock_ssl.thread = NULL;
msrp_deinit_ssl();
return st;
}
SWITCH_DECLARE(switch_msrp_session_t *)switch_msrp_session_new(switch_memory_pool_t *pool, switch_bool_t secure)
{
switch_msrp_session_t *ms;
ms = switch_core_alloc(pool, sizeof(switch_msrp_session_t));
switch_assert(ms);
ms->pool = pool;
ms->secure = secure;
ms->local_port = secure ? globals.msock_ssl.port : globals.msock.port;
ms->msrp_msg_buffer_size = globals.message_buffer_size;
switch_mutex_init(&ms->mutex, SWITCH_MUTEX_NESTED, pool);
return ms;
}
SWITCH_DECLARE(switch_status_t) switch_msrp_session_destroy(switch_msrp_session_t **ms)
{
switch_mutex_destroy((*ms)->mutex);
ms = NULL;
return SWITCH_STATUS_SUCCESS;
}
switch_status_t switch_msrp_session_push_msg(switch_msrp_session_t *ms, msrp_msg_t *msg)
{
switch_mutex_lock(ms->mutex);
if (msg->payload && msg->payload_bytes) { /* add NULL byte */
*((char *)msg->payload + msg->payload_bytes) = '\0';
msg->payload_bytes++;
}
if (ms->last_msg == NULL) {
ms->last_msg = msg;
ms->msrp_msg = msg;
} else {
ms->last_msg->next = msg;
ms->last_msg = msg;
}
ms->msrp_msg_count++;
switch_mutex_unlock(ms->mutex);
return SWITCH_STATUS_SUCCESS;
}
SWITCH_DECLARE(msrp_msg_t *)switch_msrp_session_pop_msg(switch_msrp_session_t *ms)
{
msrp_msg_t *m = ms->msrp_msg;
if (m == NULL) {
switch_yield(20000);
return NULL;
}
switch_mutex_lock(ms->mutex);
ms->msrp_msg = ms->msrp_msg->next;
ms->msrp_msg_count--;
if (ms->msrp_msg == NULL) ms->last_msg = NULL;
switch_mutex_unlock(ms->mutex);
return m;
}
switch_status_t msrp_msg_serialize(msrp_msg_t *msrp_msg, char *buf)
{
char *code_number_str = switch_mprintf("%d", msrp_msg->code_number);
char method[10];
switch(msrp_msg->method) {
case MSRP_METHOD_SEND: sprintf(method, "SEND"); break;
case MSRP_METHOD_AUTH: sprintf(method, "REPORT"); break;
case MSRP_METHOD_REPORT: sprintf(method, "REPORT"); break;
default: sprintf(method, "%d", msrp_msg->method); break;
}
sprintf(buf, "=================================\n"
"MSRP %s %s%s\nFrom: %s\nTo: %s\nMessage-ID: %s\n"
"Content-Type: %s\n"
"Byte-Range: %" SWITCH_SIZE_T_FMT "-%" SWITCH_SIZE_T_FMT"/%" SWITCH_SIZE_T_FMT "\n"
"Payload:\n%s\n%s\n"
"=================================\n",
msrp_msg->transaction_id ? switch_str_nil(msrp_msg->transaction_id) : code_number_str,
msrp_msg->transaction_id ? "" : " ",
msrp_msg->transaction_id ? method : switch_str_nil(msrp_msg->code_description),
switch_str_nil(msrp_msg->headers[MSRP_H_FROM_PATH]),
switch_str_nil(msrp_msg->headers[MSRP_H_TO_PATH]),
switch_str_nil(msrp_msg->headers[MSRP_H_MESSAGE_ID]),
switch_str_nil(msrp_msg->headers[MSRP_H_CONTENT_TYPE]),
msrp_msg->byte_start,
msrp_msg->byte_end,
msrp_msg->bytes,
msrp_msg->payload,
msrp_msg->delimiter);
switch_safe_free(code_number_str)
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t msrp_socket_recv(msrp_client_socket_t *csock, char *buf, switch_size_t *len)
{
switch_status_t status = SWITCH_STATUS_FALSE;
if (csock->secure) {
*len = SSL_read(globals.ssl, buf, *len);
if (*len) status = SWITCH_STATUS_SUCCESS;
} else {
status = switch_socket_recv(csock->sock, buf, len);
}
return status;
}
static switch_status_t msrp_socket_send(msrp_client_socket_t *csock, char *buf, switch_size_t *len)
{
if (csock->secure) {
*len = SSL_write(globals.ssl, buf, *len);
return *len ? SWITCH_STATUS_SUCCESS : SWITCH_STATUS_FALSE;
} else {
return switch_socket_send(csock->sock, buf, len);
}
}
void dump_buffer(char *buf, switch_size_t len, int line)
{
int i, j, k = 0;
char buff[MSRP_BUFF_SIZE * 2];
// return;
for(i=0,j=0; i<len; i++) {
if (buf[i] == '\0') {
buff[j++] = '\\';
buff[j++] = '0';
} else if(buf[i] == '\r') {
buff[j++] = '\\';
buff[j++] = 'r';
} else if(buf[i] == '\n') {
buff[j++] = '\\';
buff[j++] = 'n';
buff[j++] = '\n';
k = 0;
}
else {
buff[j++] = buf[i];
}
if ((++k) %80 == 0) buff[j++] = '\n';
if (j >= MSRP_BUFF_SIZE * 2) break;
}
buff[j] = '\0';
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "%d:%" SWITCH_SIZE_T_FMT "DUMP:%s:DUMP\n", line, len, buff);
}
char *find_delim(char *buf, int len, char *delim)
{
char *p, *q, *s = NULL;
char *end;
p = buf;
q = delim;
if (p == NULL) return NULL;
if (q == NULL) return NULL;
end = buf + len - strlen(delim);
while(p < end && *q) {
if (*p == *q) {
if (s == NULL) s = p;
p++;
q++;
} else {
s = NULL;
p++;
q = delim;
}
if (*q == '\0') return s;
}
return NULL;
}
/*
MSRP d4c667b2351e958f SEND
To-Path: msrp://192.168.0.56:2856/73671a97c9dec690d303;tcp
From-Path: msrp://192.168.0.56:2855/2fb5dfec96f3609f7b48;tcp
Message-ID: 7b7c9965ffa8533c
Byte-Range: 1-0/0
-------d4c667b2351e958f$
*/
char *msrp_parse_header(char *start, int skip, const char *end, msrp_msg_t *msrp_msg, int index, switch_memory_pool_t *pool)
{
char *p = start + skip;
char *q;
if (*p && *p == ' ') p++;
q = p;
while(*q != '\n' && q < end) q++;
if (q > p) {
if (*(q-1) == '\r') *(q-1) = '\0';
*q = '\0';
msrp_msg->headers[index] = switch_core_strdup(pool, p);
msrp_msg->last_header = msrp_msg->last_header > index ? msrp_msg->last_header : index;
return q + 1;
}
return start;
}
msrp_msg_t *msrp_parse_headers(const char *start, int len, msrp_msg_t *msrp_msg, switch_memory_pool_t *pool)
{
char *p = (char *)start;
char *q = p;
const char *end = start + len;
int headers = 0;
char line[1024];
while(p < end) {
if (!strncasecmp(p, "MSRP ", 5)) {
p += 5;
q = p;
while(*q && q < end && *q != ' ') q++;
if (q > p) {
*q = '\0';
msrp_msg->transaction_id = switch_core_strdup(pool, p);
switch_snprintf(line, 128, "-------%s", msrp_msg->transaction_id);
msrp_msg->delimiter = switch_core_strdup(pool, line);
msrp_msg->state = MSRP_ST_PARSE_HEADER;
}
p = q;
if (++p >= end) goto done;
if (!strncasecmp(p, "SEND", 4)) {
msrp_msg->method = MSRP_METHOD_SEND;
p +=6; /*skip \r\n*/
} else if (!strncasecmp(p, "REPORT", 6)) {
msrp_msg->method = MSRP_METHOD_REPORT;
p += 8;
} else if (!strncasecmp(p, "AUTH", 4)) {
msrp_msg->method = MSRP_METHOD_AUTH;
p += 6;
} else {/* MSRP transaction_id coden_number codede_scription */
msrp_msg->method = MSRP_METHOD_REPLY;
q = p;
while(*q && q < end && *q != ' ') q++;
if (q > p) {
*q = '\0';
msrp_msg->code_number = atoi(p);
p = ++q;
while(*q && q < end && *q != '\n') q++;
if (q > p) {
if (*(q-1) == '\r') *(q-1) = '\0';
*q = '\0';
msrp_msg->code_description = switch_core_strdup(pool, p);
p = ++q;
}
}
}
headers++;
} else if (!strncasecmp(p, "From-Path:", 10)) {
q = msrp_parse_header(p, 10, end, msrp_msg, MSRP_H_FROM_PATH, pool);
if (q == p) break; /* incomplete header*/
p = q;
} else if (!strncasecmp(p, "To-Path:", 8)) {
q = msrp_parse_header(p, 8, end, msrp_msg, MSRP_H_TO_PATH, pool);
if (q == p) break; /* incomplete header*/
p = q;
} else if (!strncasecmp(p, "Status:", 7)) {
q = msrp_parse_header(p, 7, end, msrp_msg, MSRP_H_STATUS, pool);
if (q == p) break; /* incomplete header*/
p = q;
} else if (!strncasecmp(p, "Keep-Alive:", 11)) {
q = msrp_parse_header(p, 11, end, msrp_msg, MSRP_H_KEEPALIVE, pool);
if (q == p) break; /* incomplete header*/
p = q;
} else if (!strncasecmp(p, "Message-ID:", 11)) {
q = msrp_parse_header(p, 11, end, msrp_msg, MSRP_H_MESSAGE_ID, pool);
if (q == p) break; /* incomplete header*/
p = q;
} else if (!strncasecmp(p, "Content-Type:", 13)) {
q = msrp_parse_header(p, 13, end, msrp_msg, MSRP_H_CONTENT_TYPE, pool);
if (q == p) break; /* incomplete header*/
p = q;
} else if (!strncasecmp(p, "Success-Report:", 15)) {
q = msrp_parse_header(p, 15, end, msrp_msg, MSRP_H_SUCCESS_REPORT, pool);
if (q == p) break; /* incomplete header*/
p = q;
} else if (!strncasecmp(p, "Failure-Report:", 15)) {
q = msrp_parse_header(p, 15, end, msrp_msg, MSRP_H_FAILURE_REPORT, pool);
if (q == p) break; /* incomplete header*/
p = q;
} else if (!strncasecmp(p, "Byte-Range:", 11)) {
p += 11;
if (*p && *p == ' ') p++;
q = p;
while(*q && q < end && *q != '-') q++;
if (q > p) {
*q = '\0';
msrp_msg->byte_start = atoi(p);
switch_assert(msrp_msg->byte_start > 0);
p = ++q;
if (*p && *p == '*') {
msrp_msg->range_star = 1;
}
while(*q && q < end && *q != '/') q++;
if (q > p) {
*q = '\0';
msrp_msg->byte_end = msrp_msg->range_star ? 0 : atoi(p);
p = ++q;
while(*q && q < end && *q != '\n') q++;
if (q > p) {
if (*(q-1) == '\r') *(q-1) = '\0';
*q = '\0';
msrp_msg->bytes = atoi(p);
if (!msrp_msg->range_star) {
msrp_msg->payload_bytes = msrp_msg->byte_end + 1 - msrp_msg->byte_start;
}
if (globals.debug) switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "%" SWITCH_SIZE_T_FMT " payload bytes\n", msrp_msg->payload_bytes);
/*Fixme sanity check to avoid large byte-range attack*/
if (!msrp_msg->range_star && msrp_msg->payload_bytes > msrp_msg->bytes) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "payload size does't match %" SWITCH_SIZE_T_FMT " != %" SWITCH_SIZE_T_FMT "\n", msrp_msg->payload_bytes, msrp_msg->bytes);
msrp_msg->state = MSRP_ST_ERROR;
p = ++q;
break;
}
p = ++q;
}
}
}
headers++;
} else if (*p == '\r' && *(p+1) == '\n') {
msrp_msg->state = MSRP_ST_WAIT_BODY;
p += 2;
break;
} else if (msrp_msg->delimiter &&
!strncasecmp(p, msrp_msg->delimiter, strlen(msrp_msg->delimiter))) {
char *x = p + strlen(msrp_msg->delimiter);
if (x < end) {
if (*x == '$') {
p = x + 1;
msrp_msg->state = MSRP_ST_DONE;
if (*p == '\r') p++;
if (*p == '\n') p++;
break;
} else if(*x == '+') {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Unsupported %c\n", *x);
if (*p == '\r') p++;
if (*p == '\n') p++;
break;
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Unsupported %c\n", *x);
msrp_msg->state = MSRP_ST_ERROR; //TODO support # etc.
break;
}
}
break;
} else {/* unsupported header*/
q = p;
while(*q && q < end && *q != ':') q++;
if (q > p) {
char *last_p = p;
*q = '\0';
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "unsupported header [%s]\n", p);
p = q + 1;
msrp_msg->last_header = msrp_msg->last_header == 0 ? MSRP_H_UNKNOWN : msrp_msg->last_header + 1;
q = msrp_parse_header(p, 0, end, msrp_msg, msrp_msg->last_header, pool);
if (q == p) {
p = last_p;
break; /* incomplete header*/
}
p = q;
}
}
}
done:
msrp_msg->last_p = p;
return msrp_msg;
}
msrp_msg_t *msrp_parse_buffer(char *buf, int len, msrp_msg_t *msrp_msg, switch_memory_pool_t *pool)
{
const char *start;
if (!msrp_msg) {
switch_zmalloc(msrp_msg, sizeof(msrp_msg_t));
switch_assert(msrp_msg);
msrp_msg->state = MSRP_ST_WAIT_HEADER;
}
if (globals.debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "parse state: %d\n", msrp_msg->state);
dump_buffer(buf, len, __LINE__);
}
if (msrp_msg->state == MSRP_ST_WAIT_HEADER) {
if ((start = switch_stristr("MSRP ", buf)) == NULL) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Not an MSRP packet, Skip!\n");
return msrp_msg;
}
msrp_msg = msrp_parse_headers(start, len - (start - buf), msrp_msg, pool);
if (msrp_msg->state == MSRP_ST_ERROR) return msrp_msg;
if (msrp_msg->state == MSRP_ST_DONE) return msrp_msg;
if (msrp_msg->last_p && msrp_msg->last_p < buf + len) {
msrp_msg = msrp_parse_buffer(msrp_msg->last_p, len - (msrp_msg->last_p - buf), msrp_msg, pool);
}
} else if (msrp_msg->state == MSRP_ST_WAIT_BODY) {
if(!msrp_msg->range_star && msrp_msg->byte_end == 0) {
msrp_msg->state = MSRP_ST_DONE;
return msrp_msg;
}
if (msrp_msg->range_star) { /* the * case */
/*hope we can find the delimiter at the end*/
int dlen;
char *delim_pos = NULL;
switch_assert(msrp_msg->delimiter);
dlen = strlen(msrp_msg->delimiter);
if (!strncmp(buf + len - dlen - 3, msrp_msg->delimiter, dlen)) { /*bingo*/
msrp_msg->payload_bytes = len - dlen - 5;
msrp_msg->payload = switch_core_alloc(pool, msrp_msg->payload_bytes + 1);
switch_assert(msrp_msg->payload);
memcpy(msrp_msg->payload, buf, msrp_msg->payload_bytes);
msrp_msg->byte_end = msrp_msg->byte_start + msrp_msg->payload_bytes - 1;
msrp_msg->state = MSRP_ST_DONE;
msrp_msg->last_p = buf + len;
return msrp_msg;
} else if ((delim_pos = find_delim(buf, len, msrp_msg->delimiter))){
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "=======================================delimiter: %s\n", delim_pos);
msrp_msg->payload_bytes = delim_pos - buf - 2;
// if (msrp_msg->payload_bytes < 0) msrp_msg->payload_bytes = 0;
msrp_msg->payload = switch_core_alloc(pool, msrp_msg->payload_bytes + 1);
switch_assert(msrp_msg->payload);
memcpy(msrp_msg->payload, buf, msrp_msg->payload_bytes);
msrp_msg->byte_end = msrp_msg->byte_start + msrp_msg->payload_bytes - 1;
msrp_msg->state = MSRP_ST_DONE;
msrp_msg->last_p = delim_pos + dlen + 3;
return msrp_msg;
} else {/* keep waiting*/
/*TODO: fix potential overflow here*/
msrp_msg->last_p = buf;
return msrp_msg;
}
} else if (msrp_msg->payload_bytes == 0) {
int dlen = strlen(msrp_msg->delimiter);
if(strncasecmp(buf, msrp_msg->delimiter, dlen)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error find delimiter\n");
msrp_msg->state = MSRP_ST_ERROR;
return msrp_msg;
}
msrp_msg->payload = NULL;
msrp_msg->state = MSRP_ST_DONE;
msrp_msg->last_p = buf + dlen + 3; /*Fixme: assuming end with $\r\n*/
return msrp_msg;
} else {
int dlen = strlen(msrp_msg->delimiter);
if (msrp_msg->payload_bytes > len) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Waiting payload...%d < %d\n", (int)msrp_msg->payload_bytes, (int)len);
return msrp_msg; /*keep waiting ?*/
}
msrp_msg->payload = switch_core_alloc(pool, msrp_msg->payload_bytes);
switch_assert(msrp_msg->payload);
memcpy(msrp_msg->payload, buf, msrp_msg->payload_bytes);
msrp_msg->last_p = buf + msrp_msg->payload_bytes;
msrp_msg->state = MSRP_ST_DONE;
msrp_msg->last_p = buf + msrp_msg->payload_bytes;
if (msrp_msg->payload_bytes == len - dlen - 5) {
msrp_msg->last_p = buf + len;
if (globals.debug) switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "payload bytes:%d\n", (int)msrp_msg->payload_bytes);
return msrp_msg; /*Fixme: assuming \r\ndelimiter$\r\n present*/
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "%" SWITCH_SIZE_T_FMT " %d %d\n", msrp_msg->payload_bytes, len, dlen);
msrp_msg->state = MSRP_ST_ERROR;
return msrp_msg;
}
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "error here! code:%d\n", msrp_msg->state);
}
return msrp_msg;
}
switch_status_t msrp_reply(msrp_client_socket_t *csock, msrp_msg_t *msrp_msg)
{
char buf[2048];
switch_size_t len;
sprintf(buf, "MSRP %s 200 OK\r\nTo-Path: %s\r\nFrom-Path: %s\r\n"
"%s$\r\n",
switch_str_nil(msrp_msg->transaction_id),
switch_str_nil(msrp_msg->headers[MSRP_H_FROM_PATH]),
switch_str_nil(msrp_msg->headers[MSRP_H_TO_PATH]),
msrp_msg->delimiter);
len = strlen(buf);
return msrp_socket_send(csock, buf, &len);
}
switch_status_t msrp_report(msrp_client_socket_t *csock, msrp_msg_t *msrp_msg, char *status_code)
{
char buf[2048];
switch_size_t len;
sprintf(buf, "MSRP %s REPORT\r\nTo-Path: %s\r\nFrom-Path: %s\r\nMessage-ID: %s\r\n"
"Status: 000 %s\r\nByte-Range: 1-%" SWITCH_SIZE_T_FMT "/%" SWITCH_SIZE_T_FMT
"\r\n%s$\r\n",
switch_str_nil(msrp_msg->transaction_id),
switch_str_nil(msrp_msg->headers[MSRP_H_FROM_PATH]),
switch_str_nil(msrp_msg->headers[MSRP_H_TO_PATH]),
switch_str_nil(msrp_msg->headers[MSRP_H_MESSAGE_ID]),
switch_str_nil(status_code),
msrp_msg->byte_end,
msrp_msg->bytes,
msrp_msg->delimiter);
len = strlen(buf);
if (globals.debug) switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "report: %" SWITCH_SIZE_T_FMT " bytes\n%s", len, buf);
return msrp_socket_send(csock, buf, &len);
}
static switch_bool_t msrp_find_uuid(char *uuid, char *to_path)
{
int len = strlen(to_path);
int i;
int slash_count = 0;
switch_assert(to_path);
for(i=0; i<len; i++){
if (*(to_path + i) == '/') {
if (++slash_count == 3) break;
}
}
if (slash_count < 3) return SWITCH_FALSE;
if (len - i++ < 36) return SWITCH_FALSE;
switch_snprintf(uuid, 37, to_path + i);
return SWITCH_TRUE;
}
static void *SWITCH_THREAD_FUNC msrp_worker(switch_thread_t *thread, void *obj)
{
worker_helper_t *helper = (worker_helper_t *) obj;
msrp_client_socket_t *csock = &helper->csock;
switch_memory_pool_t *pool = helper->pool;
char buf[MSRP_BUFF_SIZE];
char *p;
char *last_p;
switch_size_t len = MSRP_BUFF_SIZE;
switch_status_t status;
msrp_msg_t *msrp_msg = NULL;
char uuid[128] = { 0 };
switch_core_session_t *session = NULL;
switch_msrp_session_t *msrp_session = NULL;
switch_channel_t *channel = NULL;
int sanity = 10;
SSL *ssl = NULL;
switch_socket_opt_set(csock->sock, SWITCH_SO_TCP_NODELAY, TRUE);
// switch_socket_opt_set(csock->sock, SWITCH_SO_NONBLOCK, TRUE);
if (csock->secure) { // tls?
int secure_established = 0;
int sanity = 10;
switch_os_socket_t sockdes = SWITCH_SOCK_INVALID;
switch_os_sock_get(&sockdes, csock->sock);
// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "socket: %d\n", sockdes);
switch_assert(sockdes != SWITCH_SOCK_INVALID);
ssl = SSL_new(globals.ssl_ctx);
assert(ssl);
globals.ssl = ssl;
SSL_set_fd(ssl, sockdes);
do {
int code = SSL_accept(ssl);
if (code == 1) {
secure_established = 1;
goto done;
}
if (code == 0) {
goto err;
}
if (code < 0) {
if (code == -1 && SSL_get_error(ssl, code) != SSL_ERROR_WANT_READ) {
goto err;
}
}
} while(sanity--);
err:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "SSL ERR\n");
goto end;
done:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "SSL established = %d\n", secure_established);
}
len = MSRP_BUFF_SIZE;
status = msrp_socket_recv(csock, buf, &len);
if (helper->debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "status:%d, len:%" SWITCH_SIZE_T_FMT "\n", status, len);
}
if (status == SWITCH_STATUS_SUCCESS) {
msrp_msg = msrp_parse_buffer(buf, len, NULL, pool);
switch_assert(msrp_msg);
} else {
goto end;
}
if (helper->debug) {
msrp_msg_serialize(msrp_msg, buf);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "%s\n", buf);
}
if (msrp_msg->state == MSRP_ST_DONE && msrp_msg->method == MSRP_METHOD_SEND) {
msrp_reply(csock, msrp_msg);
if (msrp_msg->headers[MSRP_H_SUCCESS_REPORT] &&
!strcmp(msrp_msg->headers[MSRP_H_SUCCESS_REPORT], "yes")) {
msrp_report(csock, msrp_msg, "200 OK");
}
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Parse initial message error!\n");
goto end;
}
if (msrp_find_uuid(uuid, msrp_msg->headers[MSRP_H_TO_PATH]) != SWITCH_TRUE) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Invalid MSRP to-path!\n");
goto end;
}
while (sanity-- && !(session = switch_core_session_locate(uuid))) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "waiting for session\n");
switch_yield(1000000);
}
if(!session) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "No such session %s\n", uuid);
goto end;
}
channel = switch_core_session_get_channel(session);
msrp_session = switch_core_media_get_msrp_session(session);
switch_assert(msrp_session);
msrp_session->csock = csock;
len = MSRP_BUFF_SIZE;
p = buf;
last_p = buf;
switch_safe_free(msrp_msg);
msrp_msg = NULL;
while(msrp_socket_recv(csock, p, &len) == SWITCH_STATUS_SUCCESS) {
// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "read bytes:%ld\n", len);
if (helper->debug) dump_buffer(buf, (p - buf) + len, __LINE__);
msrp_msg = msrp_parse_buffer(last_p, p - last_p + len, msrp_msg, pool);
switch_assert(msrp_msg);
if (msrp_msg->state == MSRP_ST_ERROR) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "msrp parse error!\n");
goto end;
}
if (helper->debug) {
// char msg_buf[MSRP_BUFF_SIZE * 2];
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "state:%d, len:%" SWITCH_SIZE_T_FMT " payload_bytes:%" SWITCH_SIZE_T_FMT "\n", msrp_msg->state, len, msrp_msg->payload_bytes);
// {
// char bbb[MSRP_BUFF_SIZE * 2];
// msrp_msg_serialize(msrp_msg_tmp, bbb),
//
}
if (msrp_msg->state == MSRP_ST_DONE && msrp_msg->method == MSRP_METHOD_SEND) {
msrp_reply(csock, msrp_msg);
if (msrp_msg->headers[MSRP_H_SUCCESS_REPORT] &&
!strcmp(msrp_msg->headers[MSRP_H_SUCCESS_REPORT], "yes")) {
msrp_report(csock, msrp_msg, "200 OK");
}
last_p = msrp_msg->last_p;
switch_msrp_session_push_msg(msrp_session, msrp_msg);
msrp_msg = NULL;
} else if (msrp_msg->state == MSRP_ST_DONE) { /* throw away */
last_p = msrp_msg->last_p;
switch_safe_free(msrp_msg);
msrp_msg = NULL;
} else {
last_p = msrp_msg->last_p;
}
while (msrp_session && msrp_session->msrp_msg_count > msrp_session->msrp_msg_buffer_size) {
if (!switch_channel_ready(channel)) break;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "%s reading too fast, relax...\n", uuid);
switch_yield(100000);
}
if (p + len > last_p) {
p += len;
if (!msrp_msg) {
int rest_len = p - last_p;
memmove(buf, last_p, rest_len);
p = buf + rest_len;
len = MSRP_BUFF_SIZE - rest_len;
last_p = buf;
continue;
}
if (p >= buf + MSRP_BUFF_SIZE) {
if (msrp_msg->state != MSRP_ST_WAIT_BODY || !msrp_msg->range_star) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "buffer overflow\n");
/*todo, do a strstr in the whole buffer ?*/
break;
}
/* buffer full*/
msrp_msg->payload_bytes = p - last_p;
msrp_msg->byte_end = msrp_msg->byte_start + msrp_msg->payload_bytes - 1;
msrp_msg->payload = switch_core_alloc(pool, msrp_msg->payload_bytes);
switch_assert(msrp_msg->payload);
memcpy(msrp_msg->payload, last_p, msrp_msg->payload_bytes);
{
int i;
msrp_msg_t *msrp_msg_old = msrp_msg;
msrp_msg = NULL;
/*dup msrp_msg*/
switch_zmalloc(msrp_msg, sizeof(msrp_msg_t));
switch_assert(msrp_msg);
msrp_msg->state = msrp_msg_old->state;
msrp_msg->byte_start = msrp_msg_old->byte_end + 1;
msrp_msg->bytes = msrp_msg_old->bytes;
msrp_msg->range_star = msrp_msg_old->range_star;
msrp_msg->method = msrp_msg_old->method;
msrp_msg->transaction_id = switch_core_strdup(pool, msrp_msg_old->transaction_id);
msrp_msg->delimiter = switch_core_strdup(pool, msrp_msg_old->delimiter);
msrp_msg->last_header = msrp_msg_old->last_header;
for (i = 0; i < msrp_msg->last_header; i++) {
msrp_msg->headers[i] = switch_core_strdup(pool, msrp_msg_old->headers[i]);
}
msrp_msg_old->state = MSRP_ST_DONE;
if (msrp_msg_old->headers[MSRP_H_SUCCESS_REPORT] &&
!strcmp(msrp_msg_old->headers[MSRP_H_SUCCESS_REPORT], "yes")) {
// msrp_report(csock, msrp_msg_old, "200 OK");
}
switch_msrp_session_push_msg(msrp_session, msrp_msg_old);
}
p = buf;
len = MSRP_BUFF_SIZE;
last_p = buf;
msrp_msg->last_p = buf;
}
} else { /* all buffer parsed */
p = buf;
len = MSRP_BUFF_SIZE;
last_p = buf;
}
if (!switch_channel_ready(channel)) break;
}
end:
if (session) switch_core_session_rwunlock(session);
switch_socket_close(csock->sock);
switch_core_destroy_memory_pool(&pool);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "msrp worker %s down\n", uuid);
return NULL;
}
static void *SWITCH_THREAD_FUNC msrp_listener(switch_thread_t *thread, void *obj)
{
msrp_socket_t *msock = (msrp_socket_t *)obj;
switch_status_t rv;
switch_memory_pool_t *pool = NULL;
switch_threadattr_t *thd_attr = NULL;
switch_socket_t *sock = NULL;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "MSRP listener start%s\n", msock->secure ? " ssl" : "");
if (switch_core_new_memory_pool(&pool) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "OH OH no pool\n");
return NULL;
}
switch_socket_opt_set(msock->sock, SWITCH_SO_TCP_NODELAY, TRUE);
// switch_socket_opt_set(msock->sock, SWITCH_SO_NONBLOCK, TRUE);
while (globals.running && (rv = switch_socket_accept(&sock, msock->sock, pool)) == SWITCH_STATUS_SUCCESS) {
switch_memory_pool_t *worker_pool;
worker_helper_t *helper;
if (globals.debug > 0) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Connection Open%s\n", msock->secure ? " SSL" : "");
}
if (switch_core_new_memory_pool(&worker_pool) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "OH OH no pool\n");
return NULL;
}
switch_zmalloc(helper, sizeof(worker_helper_t));
switch_assert(helper != NULL);
helper->pool = worker_pool;
helper->debug = globals.debug;
helper->csock.sock = sock;
helper->csock.secure = msock->secure;
switch_threadattr_create(&thd_attr, pool);
switch_threadattr_detach_set(thd_attr, 1);
switch_threadattr_stacksize_set(thd_attr, SWITCH_THREAD_STACKSIZE);
switch_thread_create(&thread, thd_attr, msrp_worker, helper, worker_pool);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "msrp worker new thread spawned!\n");
}
if (pool) switch_core_destroy_memory_pool(&pool);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "MSRP listener down\n");
return NULL;
}
void random_string(char *buf, uint16_t size)
{
switch_stun_random_string(buf, size, NULL);
}
#define MSRP_TRANS_ID_LEN 16
SWITCH_DECLARE(switch_status_t) switch_msrp_send(switch_msrp_session_t *ms, msrp_msg_t *msrp_msg)
{
char transaction_id[MSRP_TRANS_ID_LEN + 1] = { 0 };
char buf[MSRP_BUFF_SIZE];
switch_size_t len;
char *to_path = msrp_msg->headers[MSRP_H_TO_PATH] ? msrp_msg->headers[MSRP_H_TO_PATH] : ms->remote_path;
char *from_path = msrp_msg->headers[MSRP_H_FROM_PATH] ? msrp_msg->headers[MSRP_H_FROM_PATH] : ms->local_path;
if (!from_path) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "NO FROM PATH\n");
return SWITCH_STATUS_SUCCESS;
}
random_string(transaction_id, MSRP_TRANS_ID_LEN);
sprintf(buf, "MSRP %s SEND\r\nTo-Path: %s\r\nFrom-Path: %s\r\n"
"Content-Type: %s\r\n"
"Byte-Range: 1-%" SWITCH_SIZE_T_FMT "/%" SWITCH_SIZE_T_FMT "%s",
transaction_id,
to_path,
from_path,
switch_str_nil(msrp_msg->headers[MSRP_H_CONTENT_TYPE]),
msrp_msg->payload ? msrp_msg->payload_bytes : 0,
msrp_msg->payload ? msrp_msg->payload_bytes : 0,
msrp_msg->payload ? "\r\n\r\n" : "");
len = strlen(buf);
if (msrp_msg->payload) {
if (len + msrp_msg->payload_bytes >= MSRP_BUFF_SIZE) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "payload too large! %" SWITCH_SIZE_T_FMT "\n", len + msrp_msg->payload_bytes);
return SWITCH_STATUS_FALSE;
}
memcpy(buf + len, msrp_msg->payload, msrp_msg->payload_bytes);
len += msrp_msg->payload_bytes;
}
sprintf(buf + len, "\r\n-------%s$\r\n", transaction_id);
len += (12 + strlen(transaction_id));
if (globals.debug) switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "---------------------send: %" SWITCH_SIZE_T_FMT " bytes\n%s\n", len, buf);
return ms->csock ? msrp_socket_send(ms->csock, buf, &len) : SWITCH_STATUS_FALSE;
}
#if 0
SWITCH_STANDARD_APP(msrp_echo_function)
{
msrp_session_t *msrp_session = NULL;
msrp_msg_t *msrp_msg = NULL;
switch_channel_t *channel = switch_core_session_get_channel(session);
// private_object_t *tech_pvt = switch_core_session_get_private(session);
if (!tech_pvt) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No tech_pvt!\n");
return;
}
if(!tech_pvt->msrp_session) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No msrp_session!\n");
return;
}
while (switch_channel_ready(channel) && (msrp_session = tech_pvt->msrp_session)) {
if ((msrp_msg = msrp_session_pop_msg(msrp_session)) == NULL) {
switch_yield(100000);
continue;
}
if (msrp_msg->method == MSRP_METHOD_SEND) { /*echo back*/
char *p;
p = msrp_msg->headers[MSRP_H_TO_PATH];
msrp_msg->headers[MSRP_H_TO_PATH] = msrp_msg->headers[MSRP_H_FROM_PATH];
msrp_msg->headers[MSRP_H_FROM_PATH] = p;
msrp_send(msrp_session->socket, msrp_msg);
}
switch_safe_free(msrp_msg);
msrp_msg = NULL;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "eat one message, left:%d\n", (int)msrp_session->msrp_msg_count);
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Echo down!\n");
}
SWITCH_STANDARD_APP(msrp_recv_function)
{
msrp_session_t *msrp_session = NULL;
msrp_msg_t *msrp_msg = NULL;
switch_channel_t *channel = switch_core_session_get_channel(session);
private_object_t *tech_pvt = switch_core_session_get_private(session);
switch_memory_pool_t *pool = switch_core_session_get_pool(session);
switch_file_t *fd;
const char *filename = data;
if (!tech_pvt) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No tech_pvt!\n");
return;
}
if(!tech_pvt->msrp_session) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No msrp_session!\n");
return;
}
if (zstr(data)) {
filename = switch_channel_get_variable(channel, "sip_msrp_file_name");
if (zstr(filename)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "No file specified.\n");
return;
}
filename = switch_core_session_sprintf(session, "%s%s%s", SWITCH_GLOBAL_dirs.base_dir, SWITCH_PATH_SEPARATOR, filename);
}
if (!(msrp_session = tech_pvt->msrp_session)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Not a msrp session!\n");
return;
}
if (switch_file_open(&fd, filename, SWITCH_FOPEN_WRITE | SWITCH_FOPEN_TRUNCATE | SWITCH_FOPEN_CREATE, SWITCH_FPROT_OS_DEFAULT, pool) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error Open File %s\n", filename);
return;
}
while (1) {
if ((msrp_msg = msrp_session_pop_msg(msrp_session)) == NULL) {
if (!switch_channel_ready(channel)) break;
switch_yield(10000);
continue;
}
if (msrp_msg->method == MSRP_METHOD_SEND) {
switch_size_t bytes = msrp_msg->payload_bytes;
char *msg = switch_str_nil(msrp_msg->headers[MSRP_H_MESSAGE_ID]);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "%s %" SWITCH_SIZE_T_FMT "bytes writing\n", msg, bytes);
switch_file_write(fd, msrp_msg->payload, &bytes);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "%" SWITCH_SIZE_T_FMT "bytes written\n", bytes);
if (bytes != msrp_msg->payload_bytes) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "write fail, bytes lost!\n");
}
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "eat one message, left:%d\n", (int)msrp_session->msrp_msg_count);
switch_safe_free(msrp_msg);
}
switch_file_close(fd);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "File closed!\n");
}
SWITCH_STANDARD_APP(msrp_send_function)
{
msrp_session_t *msrp_session = NULL;
msrp_msg_t *msrp_msg = NULL;
switch_channel_t *channel = switch_core_session_get_channel(session);
private_object_t *tech_pvt = switch_core_session_get_private(session);
switch_memory_pool_t *pool = switch_core_session_get_pool(session);
switch_file_t *fd;
const char *filename = data;
switch_size_t len = 2048;
char buf[2048];
int sanity = 10;
if (!tech_pvt) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No tech_pvt!\n");
return;
}
if(!tech_pvt->msrp_session) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No msrp_session!\n");
return;
}
if (!(msrp_session = tech_pvt->msrp_session)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Not a msrp session!\n");
return;
}
if (switch_file_open(&fd, filename, SWITCH_FOPEN_READ, SWITCH_FPROT_OS_DEFAULT, pool) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error Open File %s\n", filename);
return;
}
switch_assert(pool);
switch_zmalloc(msrp_msg, sizeof(msrp_msg_t));
switch_assert(msrp_msg);
msrp_msg->headers[MSRP_H_FROM_PATH] = switch_mprintf("msrp://%s:%d/%s;tcp",
tech_pvt->rtpip, tech_pvt->msrp_session->local_port, tech_pvt->msrp_session->call_id);
msrp_msg->headers[MSRP_H_TO_PATH] = tech_pvt->msrp_session->remote_path;
/*TODO: send file in octet or maybe guess mime?*/
msrp_msg->headers[MSRP_H_CONTENT_TYPE] = "application/octet-stream";
msrp_msg->headers[MSRP_H_CONTENT_TYPE] = "text/plain";
msrp_msg->bytes = switch_file_get_size(fd);
msrp_msg->byte_start = 1;
while(sanity-- && tech_pvt->msrp_session->socket == NULL) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Waiting socket\n");
switch_yield(1000000);
}
if (tech_pvt->msrp_session->socket == NULL) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Waiting for socket timedout, exiting...\n");
goto end;
}
while (switch_file_read(fd, buf, &len) == SWITCH_STATUS_SUCCESS &&
switch_channel_ready(channel)) {
msrp_msg->payload = buf;
msrp_msg->byte_end = msrp_msg->byte_start + len - 1;
msrp_msg->payload_bytes = len;
/*TODO: send in chunk should ending in + but not $ after delimiter*/
msrp_send(tech_pvt->msrp_session->socket, msrp_msg);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "%ld bytes sent\n", len);
msrp_msg->byte_start += len;
}
sanity = 10;
while(sanity-- && switch_channel_ready(channel)) {
switch_yield(1000000);
}
end:
switch_file_close(fd);
switch_safe_free(msrp_msg->headers[MSRP_H_FROM_PATH]);
switch_safe_free(msrp_msg);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "File sent, closed!\n");
}
SWITCH_STANDARD_APP(msrp_bridge_function)
{
switch_channel_t *caller_channel = switch_core_session_get_channel(session);
switch_core_session_t *peer_session = NULL;
switch_channel_t *peer_channel = NULL;
msrp_session_t *caller_msrp_session = NULL;
msrp_session_t *peer_msrp_session = NULL;
private_object_t *tech_pvt = NULL;
private_object_t *ptech_pvt = NULL;
msrp_msg_t *msrp_msg = NULL;
switch_call_cause_t cause = SWITCH_CAUSE_NORMAL_CLEARING;
switch_status_t status;
if (zstr(data)) {
return;
}
if ((status =
switch_ivr_originate(session, &peer_session, &cause, data, 0, NULL, NULL, NULL, NULL, NULL, SOF_NONE, NULL)) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_INFO, "Originate Failed. Cause: %s\n", switch_channel_cause2str(cause));
return;
}
switch_ivr_signal_bridge(session, peer_session);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "msrp channel bridged\n");
peer_channel = switch_core_session_get_channel(session);
tech_pvt = switch_core_session_get_private(session);
ptech_pvt = switch_core_session_get_private(peer_session);
caller_msrp_session = tech_pvt->msrp_session;
peer_msrp_session = ptech_pvt->msrp_session;
switch_assert(caller_msrp_session);
switch_assert(peer_msrp_session);
if (switch_channel_test_flag(peer_channel, CF_ANSWERED) && !switch_channel_test_flag(caller_channel, CF_ANSWERED)) {
switch_channel_pass_callee_id(peer_channel, caller_channel);
switch_channel_answer(caller_channel);
}
// TODO we need to run the following code in a new thread
// TODO we cannot test channel_ready as we don't have (audio) media
// while (switch_channel_ready(caller_channel) && switch_channel_ready(peer_channel)){
while (switch_channel_get_state(caller_channel) == CS_HIBERNATE &&
switch_channel_get_state(peer_channel) == CS_HIBERNATE){
int found = 0;
if ((msrp_msg = msrp_session_pop_msg(caller_msrp_session))) {
if (msrp_msg->method == MSRP_METHOD_SEND) { /* write to peer */
msrp_msg->headers[MSRP_H_FROM_PATH] = switch_mprintf("msrp://%s:%d/%s;tcp",
ptech_pvt->rtpip, peer_msrp_session->local_port, peer_msrp_session->call_id);
msrp_msg->headers[MSRP_H_TO_PATH] = peer_msrp_session->remote_path;
if (peer_msrp_session->socket) {
msrp_send(peer_msrp_session->socket, msrp_msg);
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "socket not ready, discarding one message!!\n");
}
}
switch_safe_free(msrp_msg);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "eat one message, left:%d\n", (int)caller_msrp_session->msrp_msg_count);
found++;
}
if ((msrp_msg = msrp_session_pop_msg(peer_msrp_session))) {
if (msrp_msg->method == MSRP_METHOD_SEND) { /* write to caller */
msrp_msg->headers[MSRP_H_FROM_PATH] = switch_mprintf("msrp://%s:%d/%s;tcp",
tech_pvt->rtpip, caller_msrp_session->local_port, caller_msrp_session->call_id);
msrp_msg->headers[MSRP_H_TO_PATH] = caller_msrp_session->remote_path;
msrp_send(caller_msrp_session->socket, msrp_msg);
}
switch_safe_free(msrp_msg);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "eat one message, left:%d\n", (int)peer_msrp_session->msrp_msg_count);
found++;
}
msrp_msg = NULL;
if (!found) switch_yield(100000);
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Bridge down!\n");
if (peer_session) {
switch_core_session_rwunlock(peer_session);
}
}
SWITCH_STANDARD_API(uuid_msrp_send_function)
{
char *mycmd = NULL, *argv[3] = { 0 };
int argc;
switch_core_session_t *msession = NULL;
// msrp_session_t *msrp_session = NULL;
msrp_msg_t *msrp_msg = NULL;
private_object_t *tech_pvt = NULL;
switch_memory_pool_t *pool = NULL;
if (zstr(cmd) || !(mycmd = strdup(cmd))) {
goto error;
}
argc = switch_separate_string(mycmd, ' ', argv, (sizeof(argv) / sizeof(argv[0])));
if (argc < 2 || !argv[0]) {
goto error;
}
if (!(msession = switch_core_session_locate(argv[0]))) {
stream->write_function(stream, "-ERR Usage: cannot locate session.\n");
return SWITCH_STATUS_SUCCESS;
}
tech_pvt = switch_core_session_get_private(msession);
pool = switch_core_session_get_pool(msession);
switch_assert(pool);
if (!tech_pvt) {
stream->write_function(stream, "-ERR No tech_pvt.\n");
switch_core_session_rwunlock(msession);
return SWITCH_STATUS_SUCCESS;
}
if(!tech_pvt->msrp_session) {
stream->write_function(stream, "-ERR No msrp_session.\n");
switch_core_session_rwunlock(msession);
return SWITCH_STATUS_SUCCESS;
}
switch_zmalloc(msrp_msg, sizeof(msrp_msg_t));
switch_assert(msrp_msg);
msrp_msg->headers[MSRP_H_FROM_PATH] = switch_mprintf("msrp://%s:%d/%s;tcp",
tech_pvt->rtpip, tech_pvt->msrp_session->local_port, tech_pvt->msrp_session->call_id);
msrp_msg->headers[MSRP_H_TO_PATH] = tech_pvt->msrp_session->remote_path;
msrp_msg->headers[MSRP_H_CONTENT_TYPE] = "text/plain";
msrp_msg->payload = switch_core_strdup(pool, argv[1]);
msrp_send(tech_pvt->msrp_session->socket, msrp_msg);
switch_safe_free(msrp_msg->headers[MSRP_H_FROM_PATH]);
switch_safe_free(msrp_msg);
stream->write_function(stream, "+OK sent\n");
switch_core_session_rwunlock(msession);
return SWITCH_STATUS_SUCCESS;
error:
stream->write_function(stream, "-ERR Usage: uuid_msrp_send <uuid> msg\n");
return SWITCH_STATUS_SUCCESS;
}
#endif
#define MSRP_SYNTAX "debug <on|off>|restart"
SWITCH_STANDARD_API(msrp_api_function)
{
if (zstr(cmd)) {
stream->write_function(stream, "-ERR usage: " MSRP_SYNTAX "\n");
return SWITCH_STATUS_SUCCESS;
}
if (!strcmp(cmd, "debug on")) {
globals.debug = 1;
stream->write_function(stream, "+OK debug on\n");
} else if(!strcmp(cmd, "debug off")) {
globals.debug = 0;
stream->write_function(stream, "+OK debug off\n");
} else if(!strcmp(cmd, "restart")) {
switch_msrp_destroy();
switch_msrp_init();
}
return SWITCH_STATUS_SUCCESS;
}
SWITCH_DECLARE(void) switch_msrp_load_apis_and_applications(switch_loadable_module_interface_t **module_interface)
{
// switch_application_interface_t *app_interface;
switch_api_interface_t *api_interface;
SWITCH_ADD_API(api_interface, "msrp", "MSRP Functions", msrp_api_function, "JSON");
#if 0
SWITCH_ADD_API(api_interface, "uuid_msrp_send", "send msrp text", uuid_msrp_send_function, "<cmd> <args>");
SWITCH_ADD_APP(app_interface, "msrp_echo", "Echo msrp message", "Perform an echo test against the msrp channel", msrp_echo_function, "", SAF_NONE);
SWITCH_ADD_APP(app_interface, "msrp_recv", "Recv msrp message to file", "Recv msrp message", msrp_recv_function, "<filename>", SAF_NONE);
SWITCH_ADD_APP(app_interface, "msrp_send", "Send file via msrp", "Send file via msrp", msrp_send_function, "<filename>", SAF_NONE);
SWITCH_ADD_APP(app_interface, "msrp_bridge", "Bridge msrp channels", "Bridge msrp channels", msrp_bridge_function, "dialstr", SAF_NONE);
#endif
switch_console_set_complete("add msrp debug on");
switch_console_set_complete("add msrp debug off");
switch_console_set_complete("restart");
}
/* For Emacs:
* Local Variables:
* mode:c
* indent-tabs-mode:t
* tab-width:4
* c-basic-offset:4
* End:
* For VIM:
* vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
*/
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