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nghttp2/examples/spdycat.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 <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <unistd.h>
#include <fcntl.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <signal.h>
#include <getopt.h>
#include <poll.h>
#include <cassert>
#include <cstdio>
#include <cerrno>
#include <cstdlib>
#include <cstring>
#include <string>
#include <iostream>
#include <string>
#include <set>
#include <iomanip>
#include <fstream>
#include <map>
#include <vector>
#include <sstream>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <spdylay/spdylay.h>
#include <zlib.h>
#include "spdylay_ssl.h"
#include "uri.h"
namespace spdylay {
struct Config {
bool null_out;
bool remote_name;
bool verbose;
bool spdy3_only;
int timeout;
std::string certfile;
std::string keyfile;
Config():null_out(false), remote_name(false), verbose(false),
spdy3_only(false), timeout(-1) {}
};
struct Request {
uri::UriStruct us;
z_stream *inflater;
Request(const uri::UriStruct& us):us(us), inflater(0) {}
~Request()
{
if(inflater) {
inflateEnd(inflater);
delete inflater;
}
}
void init_inflater()
{
inflater = new z_stream();
inflater->next_in = Z_NULL;
inflater->zalloc = Z_NULL;
inflater->zfree = Z_NULL;
inflater->opaque = Z_NULL;
int rv = inflateInit2(inflater, 47);
assert(rv == Z_OK);
}
// Inflates data in |in| with the length |*inlen_ptr| and stores the
// inflated data to |out| which has allocated size at least
// |*outlen_ptr|. On return, |*outlen_ptr| is updated to represent
// the number of data written in |out|. Similarly, |*inlen_ptr| is
// updated to represent the number of input bytes processed.
//
// This function returns 0 if it succeeds, or -1.
int inflate_data(uint8_t *out, size_t *outlen_ptr,
const uint8_t *in, size_t *inlen_ptr)
{
assert(inflater);
inflater->avail_in = *inlen_ptr;
inflater->next_in = const_cast<unsigned char*>(in);
inflater->avail_out = *outlen_ptr;
inflater->next_out = out;
int rv = inflate(inflater, Z_NO_FLUSH);
*inlen_ptr -= inflater->avail_in;
*outlen_ptr -= inflater->avail_out;
switch(rv) {
case Z_OK:
case Z_STREAM_END:
case Z_BUF_ERROR:
return 0;
case Z_DATA_ERROR:
case Z_STREAM_ERROR:
case Z_NEED_DICT:
case Z_MEM_ERROR:
return -1;
default:
assert(0);
}
}
};
std::map<int32_t, Request*> stream2req;
size_t numreq, complete;
Config config;
extern bool ssl_debug;
void on_data_chunk_recv_callback
(spdylay_session *session, uint8_t flags, int32_t stream_id,
const uint8_t *data, size_t len, void *user_data)
{
std::map<int32_t, Request*>::iterator itr = stream2req.find(stream_id);
if(itr != stream2req.end()) {
Request *req = (*itr).second;
if(req->inflater) {
while(len > 0) {
const size_t MAX_OUTLEN = 4096;
uint8_t out[MAX_OUTLEN];
size_t outlen = MAX_OUTLEN;
size_t tlen = len;
int rv = req->inflate_data(out, &outlen, data, &tlen);
if(rv == -1) {
spdylay_submit_rst_stream(session, stream_id, SPDYLAY_INTERNAL_ERROR);
break;
}
std::cout.write(reinterpret_cast<const char*>(out), outlen);
data += tlen;
len -= tlen;
}
} else {
std::cout.write(reinterpret_cast<const char*>(data), len);
}
}
}
void check_stream_id(spdylay_session *session,
spdylay_frame_type type, spdylay_frame *frame)
{
int32_t stream_id = frame->syn_stream.stream_id;
Request *req = (Request*)spdylay_session_get_stream_user_data(session,
stream_id);
stream2req[stream_id] = req;
}
void on_ctrl_send_callback2
(spdylay_session *session, spdylay_frame_type type, spdylay_frame *frame,
void *user_data)
{
if(type == SPDYLAY_SYN_STREAM) {
check_stream_id(session, type, frame);
}
}
void on_ctrl_send_callback3
(spdylay_session *session, spdylay_frame_type type, spdylay_frame *frame,
void *user_data)
{
if(type == SPDYLAY_SYN_STREAM) {
check_stream_id(session, type, frame);
}
on_ctrl_send_callback(session, type, frame, user_data);
}
void check_gzip
(spdylay_session *session, spdylay_frame_type type, spdylay_frame *frame,
void *user_data)
{
char **nv;
int32_t stream_id;
if(type == SPDYLAY_SYN_REPLY) {
nv = frame->syn_reply.nv;
stream_id = frame->syn_reply.stream_id;
} else if(type == SPDYLAY_HEADERS) {
nv = frame->headers.nv;
stream_id = frame->headers.stream_id;
} else {
return;
}
bool gzip = false;
for(size_t i = 0; nv[i]; i += 2) {
if(strcmp("content-encoding", nv[i]) == 0) {
gzip = strcmp("gzip", nv[i+1]) == 0;
break;
}
}
if(gzip) {
Request *req = (Request*)spdylay_session_get_stream_user_data(session,
stream_id);
assert(req);
if(req->inflater) {
return;
}
req->init_inflater();
}
}
void on_ctrl_recv_callback2
(spdylay_session *session, spdylay_frame_type type, spdylay_frame *frame,
void *user_data)
{
check_gzip(session, type, frame, user_data);
}
void on_ctrl_recv_callback3
(spdylay_session *session, spdylay_frame_type type, spdylay_frame *frame,
void *user_data)
{
check_gzip(session, type, frame, user_data);
on_ctrl_recv_callback(session, type, frame, user_data);
}
void on_stream_close_callback
(spdylay_session *session, int32_t stream_id, spdylay_status_code status_code,
void *user_data)
{
std::map<int32_t, Request*>::iterator itr = stream2req.find(stream_id);
if(itr != stream2req.end()) {
++complete;
if(complete == numreq) {
spdylay_submit_goaway(session, SPDYLAY_GOAWAY_OK);
}
stream2req.erase(itr);
}
}
int communicate(const std::string& host, uint16_t port,
std::vector<Request>& reqvec,
const spdylay_session_callbacks *callbacks)
{
numreq = reqvec.size();
complete = 0;
stream2req.clear();
int fd = connect_to(host, port);
if(fd == -1) {
std::cerr << "Could not connect to the host" << std::endl;
return -1;
}
SSL_CTX *ssl_ctx;
ssl_ctx = SSL_CTX_new(SSLv23_client_method());
if(!ssl_ctx) {
std::cerr << ERR_error_string(ERR_get_error(), 0) << std::endl;
return -1;
}
std::string next_proto;
if(config.spdy3_only) {
next_proto = "spdy/3";
}
setup_ssl_ctx(ssl_ctx, &next_proto);
if(!config.keyfile.empty()) {
if(SSL_CTX_use_PrivateKey_file(ssl_ctx, config.keyfile.c_str(),
SSL_FILETYPE_PEM) != 1) {
std::cerr << ERR_error_string(ERR_get_error(), 0) << std::endl;
return -1;
}
}
if(!config.certfile.empty()) {
if(SSL_CTX_use_certificate_chain_file(ssl_ctx,
config.certfile.c_str()) != 1) {
std::cerr << ERR_error_string(ERR_get_error(), 0) << std::endl;
return -1;
}
}
SSL *ssl = SSL_new(ssl_ctx);
if(!ssl) {
std::cerr << ERR_error_string(ERR_get_error(), 0) << std::endl;
return -1;
}
if(ssl_handshake(ssl, fd) == -1) {
return -1;
}
make_non_block(fd);
set_tcp_nodelay(fd);
int spdy_version = spdylay_npn_get_version(
reinterpret_cast<const unsigned char*>(next_proto.c_str()),
next_proto.size());
if (spdy_version <= 0) {
return -1;
}
Spdylay sc(fd, ssl, spdy_version, callbacks);
nfds_t npollfds = 1;
pollfd pollfds[1];
std::stringstream ss;
if(reqvec[0].us.ipv6LiteralAddress) {
ss << "[";
}
ss << host;
if(reqvec[0].us.ipv6LiteralAddress) {
ss << "]";
}
if(port != 443) {
ss << ":" << port;
}
std::string hostport = ss.str();
for(int i = 0, n = reqvec.size(); i < n; ++i) {
uri::UriStruct& us = reqvec[i].us;
std::string path = us.dir+us.file+us.query;
int r = sc.submit_request(hostport, path, 3, &reqvec[i]);
assert(r == 0);
}
pollfds[0].fd = fd;
ctl_poll(pollfds, &sc);
int end_time = time(NULL) + config.timeout;
int timeout = config.timeout;
bool ok = true;
while(sc.want_read() || sc.want_write()) {
int nfds = poll(pollfds, npollfds, timeout);
if(nfds == -1) {
perror("poll");
return -1;
}
if(pollfds[0].revents & (POLLIN | POLLOUT)) {
if(sc.recv() != 0 || sc.send() != 0) {
std::cout << "Fatal" << std::endl;
ok = false;
break;
}
}
if((pollfds[0].revents & POLLHUP) || (pollfds[0].revents & POLLERR)) {
std::cout << "HUP" << std::endl;
ok = false;
break;
}
timeout = timeout == -1 ? timeout : end_time - time(NULL);
if (config.timeout != -1 && timeout <= 0) {
std::cout << "Requests to " << hostport << "timed out.";
ok = false;
break;
}
assert(ok);
ctl_poll(pollfds, &sc);
}
SSL_shutdown(ssl);
SSL_free(ssl);
SSL_CTX_free(ssl_ctx);
shutdown(fd, SHUT_WR);
close(fd);
return ok ? 0 : -1;
}
int run(char **uris, int n)
{
spdylay_session_callbacks callbacks;
memset(&callbacks, 0, sizeof(spdylay_session_callbacks));
callbacks.send_callback = send_callback;
callbacks.recv_callback = recv_callback;
callbacks.on_stream_close_callback = on_stream_close_callback;
if(config.verbose) {
callbacks.on_ctrl_recv_callback = on_ctrl_recv_callback3;
callbacks.on_data_recv_callback = on_data_recv_callback;
callbacks.on_ctrl_send_callback = on_ctrl_send_callback3;
} else {
callbacks.on_ctrl_recv_callback = on_ctrl_recv_callback2;
callbacks.on_ctrl_send_callback = on_ctrl_send_callback2;
}
if(!config.null_out) {
callbacks.on_data_chunk_recv_callback = on_data_chunk_recv_callback;
}
ssl_debug = config.verbose;
std::vector<Request> reqvec;
std::string prev_host;
uint16_t prev_port = 0;
int failures = 0;
for(int i = 0; i < n; ++i) {
uri::UriStruct us;
if(uri::parse(us, uris[i])) {
if(prev_host != us.host || prev_port != us.port) {
if(!reqvec.empty()) {
if (communicate(prev_host, prev_port, reqvec, &callbacks) != 0) {
++failures;
}
reqvec.clear();
}
prev_host = us.host;
prev_port = us.port;
}
reqvec.push_back(Request(us));
}
}
if(!reqvec.empty()) {
if (communicate(prev_host, prev_port, reqvec, &callbacks) != 0) {
++failures;
}
}
return failures;
}
void print_usage(std::ostream& out)
{
out << "Usage: spdycat [-Onv3] [-t=seconds] [--cert=CERT] [--key=KEY] [URI...]" << std::endl;
}
void print_help(std::ostream& out)
{
print_usage(out);
out << "\n"
<< "OPTIONS:\n"
<< " -v, --verbose Print debug information such as reception/\n"
<< " transmission of frames and name/value pairs.\n"
<< " -n, --null-out Discard downloaded data.\n"
<< " -O, --remote-name Save download data in the current directory.\n"
<< " The filename is dereived from URI. If URI\n"
<< " ends with '/', 'index.html' is used as a\n"
<< " filename. Not implemented yet.\n"
<< " -3, --spdy3 Only use SPDY/3.\n"
<< " -t, --timeout=N Timeout each request after N seconds.\n"
<< " --cert=CERT Use the specified client certificate file.\n"
<< " The file must be in PEM format.\n"
<< " --key=KEY Use the client private key file. The file\n"
<< " must be in PEM format.\n"
<< std::endl;
}
int main(int argc, char **argv)
{
while(1) {
int flag;
static option long_options[] = {
{"verbose", no_argument, 0, 'v' },
{"null-out", no_argument, 0, 'n' },
{"remote-name", no_argument, 0, 'O' },
{"spdy3", no_argument, 0, '3' },
{"timeout", required_argument, 0, 't' },
{"cert", required_argument, &flag, 1 },
{"key", required_argument, &flag, 2 },
{"help", no_argument, 0, 'h' },
{0, 0, 0, 0 }
};
int option_index = 0;
int c = getopt_long(argc, argv, "Onhv3t", long_options, &option_index);
if(c == -1) {
break;
}
switch(c) {
case 'O':
config.remote_name = true;
break;
case 'h':
print_help(std::cout);
exit(EXIT_SUCCESS);
case 'n':
config.null_out = true;
break;
case 'v':
config.verbose = true;
break;
case '3':
config.spdy3_only = true;
break;
case 't':
config.timeout = atoi(optarg);
break;
case '?':
exit(EXIT_FAILURE);
case 0:
switch(flag) {
case 1:
// cert option
config.certfile = optarg;
break;
case 2:
// key option
config.keyfile = optarg;
break;
}
break;
default:
break;
}
}
struct sigaction act;
memset(&act, 0, sizeof(struct sigaction));
act.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &act, 0);
SSL_load_error_strings();
SSL_library_init();
reset_timer();
return run(argv+optind, argc-optind);
}
} // namespace spdylay
int main(int argc, char **argv)
{
return spdylay::main(argc, argv);
}
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