nghttp2/examples/shrpx.cc

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/*
* Spdylay - SPDY Library
*
* Copyright (c) 2012 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "shrpx.h"
#include <stdint.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <signal.h>
#include <cstdlib>
#include <iostream>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <event2/listener.h>
#include <spdylay/spdylay.h>
#include "shrpx_config.h"
#include "shrpx_listen_handler.h"
namespace shrpx {
namespace {
std::pair<unsigned char*, size_t> next_proto;
unsigned char proto_list[23];
} // namespace
namespace {
int next_proto_cb(SSL *s, const unsigned char **data, unsigned int *len,
void *arg)
{
std::pair<unsigned char*, size_t> *next_proto =
reinterpret_cast<std::pair<unsigned char*, size_t>* >(arg);
*data = next_proto->first;
*len = next_proto->second;
return SSL_TLSEXT_ERR_OK;
}
} // namespace
namespace {
int verify_callback(int preverify_ok, X509_STORE_CTX *ctx)
{
// We don't verify the client certificate. Just request it for the
// testing purpose.
return 1;
}
} // namespace
namespace {
SSL_CTX* create_ssl_ctx()
{
// TODO lock function
SSL_CTX *ssl_ctx;
ssl_ctx = SSL_CTX_new(SSLv23_server_method());
if(!ssl_ctx) {
std::cerr << ERR_error_string(ERR_get_error(), 0) << std::endl;
return NULL;
}
SSL_CTX_set_options(ssl_ctx,
SSL_OP_ALL | SSL_OP_NO_SSLv2 | SSL_OP_NO_COMPRESSION);
SSL_CTX_set_mode(ssl_ctx, SSL_MODE_AUTO_RETRY);
SSL_CTX_set_mode(ssl_ctx, SSL_MODE_RELEASE_BUFFERS);
if(SSL_CTX_use_PrivateKey_file(ssl_ctx,
get_config()->private_key_file,
SSL_FILETYPE_PEM) != 1) {
std::cerr << "SSL_CTX_use_PrivateKey_file failed." << std::endl;
return NULL;
}
if(SSL_CTX_use_certificate_file(ssl_ctx, get_config()->cert_file,
SSL_FILETYPE_PEM) != 1) {
std::cerr << "SSL_CTX_use_certificate_file failed." << std::endl;
return NULL;
}
if(SSL_CTX_check_private_key(ssl_ctx) != 1) {
std::cerr << "SSL_CTX_check_private_key failed." << std::endl;
return NULL;
}
if(get_config()->verify_client) {
SSL_CTX_set_verify(ssl_ctx,
SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE |
SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
verify_callback);
}
// We speaks "http/1.1", "spdy/2" and "spdy/3".
proto_list[0] = 6;
memcpy(&proto_list[1], "spdy/3", 6);
proto_list[7] = 6;
memcpy(&proto_list[8], "spdy/2", 6);
proto_list[14] = 8;
memcpy(&proto_list[15], "http/1.1", 8);
next_proto.first = proto_list;
next_proto.second = sizeof(proto_list);
SSL_CTX_set_next_protos_advertised_cb(ssl_ctx, next_proto_cb, &next_proto);
return ssl_ctx;
}
} // namespace
namespace {
void ssl_acceptcb(evconnlistener *listener, int fd,
sockaddr *addr, int addrlen, void *arg)
{
ListenHandler *handler = reinterpret_cast<ListenHandler*>(arg);
handler->accept_connection(fd, addr, addrlen);
}
} // namespace
namespace {
int cache_downstream_host_address()
{
addrinfo hints;
int rv;
char service[10];
snprintf(service, sizeof(service), "%u", get_config()->downstream_port);
memset(&hints, 0, sizeof(addrinfo));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
#ifdef AI_ADDRCONFIG
hints.ai_flags |= AI_ADDRCONFIG;
#endif // AI_ADDRCONFIG
addrinfo *res, *rp;
rv = getaddrinfo(get_config()->downstream_host, service, &hints, &res);
if(rv != 0) {
LOG(ERROR) << "getaddrinfo: " << gai_strerror(rv);
return -1;
}
for(rp = res; rp; rp = rp->ai_next) {
int fd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
if(fd == -1) {
continue;
}
rv = connect(fd, rp->ai_addr, rp->ai_addrlen);
close(fd);
if(rv == -1) {
continue;
}
break;
}
if(rp == 0 && res) {
LOG(INFO) << "Using first returned address for downstream "
<< get_config()->downstream_host
<< ", port "
<< get_config()->downstream_port;
rp = res;
}
if(rp != 0) {
memcpy(&mod_config()->downstream_addr, rp->ai_addr, rp->ai_addrlen);
mod_config()->downstream_addrlen = rp->ai_addrlen;
}
freeaddrinfo(res);
if(rp == 0) {
LOG(ERROR) << "No usable address found for downstream "
<< get_config()->downstream_host
<< ", port "
<< get_config()->downstream_port;
return -1;
} else {
return 0;
}
}
} // namespace
namespace {
evconnlistener* create_evlistener(ListenHandler *handler)
{
// TODO Listen both IPv4 and IPv6
addrinfo hints;
int fd = -1;
int r;
char service[10];
snprintf(service, sizeof(service), "%u", get_config()->port);
memset(&hints, 0, sizeof(addrinfo));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
#ifdef AI_ADDRCONFIG
hints.ai_flags |= AI_ADDRCONFIG;
#endif // AI_ADDRCONFIG
addrinfo *res, *rp;
r = getaddrinfo(get_config()->host, service, &hints, &res);
if(r != 0) {
LOG(ERROR) << "getaddrinfo: " << gai_strerror(r);
return NULL;
}
for(rp = res; rp; rp = rp->ai_next) {
fd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
if(fd == -1) {
continue;
}
int val = 1;
if(setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val,
static_cast<socklen_t>(sizeof(val))) == -1) {
close(fd);
continue;
}
evutil_make_socket_nonblocking(fd);
if(bind(fd, rp->ai_addr, rp->ai_addrlen) == 0) {
break;
}
close(fd);
}
freeaddrinfo(res);
if(rp == 0) {
LOG(ERROR) << "No valid address returned for host " << get_config()->host
<< ", port " << get_config()->port;
return 0;
}
evconnlistener *evlistener = evconnlistener_new
(handler->get_evbase(),
ssl_acceptcb,
handler,
LEV_OPT_REUSEABLE | LEV_OPT_CLOSE_ON_FREE,
256,
fd);
return evlistener;
}
} // namespace
namespace {
int event_loop()
{
SSL_CTX *ssl_ctx = create_ssl_ctx();
if(ssl_ctx == NULL) {
return -1;
}
event_base *evbase = event_base_new();
ListenHandler *listener_handler = new ListenHandler(evbase, ssl_ctx);
evconnlistener *evlistener = create_evlistener(listener_handler);
if(evlistener == NULL) {
return -1;
}
if(ENABLE_LOG) {
LOG(INFO) << "Entering event loop";
}
event_base_loop(evbase, 0);
evconnlistener_free(evlistener);
SSL_CTX_free(ssl_ctx);
return 0;
}
} // namespace
int main(int argc, char **argv)
{
struct sigaction act;
memset(&act, 0, sizeof(struct sigaction));
act.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &act, 0);
OpenSSL_add_all_algorithms();
SSL_load_error_strings();
SSL_library_init();
create_config();
mod_config()->server_name = "shrpx spdylay/"SPDYLAY_VERSION;
mod_config()->port = 3000;
mod_config()->private_key_file = "server.key";
mod_config()->cert_file = "server.crt";
mod_config()->upstream_read_timeout.tv_sec = 30;
mod_config()->upstream_read_timeout.tv_usec = 0;
mod_config()->upstream_write_timeout.tv_sec = 60;
mod_config()->upstream_write_timeout.tv_usec = 0;
mod_config()->spdy_upstream_read_timeout.tv_sec = 600;
mod_config()->spdy_upstream_read_timeout.tv_usec = 0;
mod_config()->spdy_upstream_write_timeout.tv_sec = 30;
mod_config()->spdy_upstream_write_timeout.tv_usec = 0;
mod_config()->downstream_read_timeout.tv_sec = 30;
mod_config()->downstream_read_timeout.tv_usec = 0;
mod_config()->downstream_write_timeout.tv_sec = 30;
mod_config()->downstream_write_timeout.tv_usec = 0;
mod_config()->downstream_host = "localhost";
mod_config()->downstream_port = 80;
char hostport[256];
if(get_config()->downstream_port == 80) {
mod_config()->downstream_hostport = get_config()->downstream_host;
} else {
snprintf(hostport, sizeof(hostport), "%s:%u",
get_config()->downstream_host, get_config()->downstream_port);
mod_config()->downstream_hostport = hostport;
}
if(cache_downstream_host_address() == -1) {
exit(EXIT_FAILURE);
}
event_loop();
return 0;
}
} // namespace shrpx
int main(int argc, char **argv)
{
return shrpx::main(argc, argv);
}