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nghttp2/src/nghttpd.cc

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/*
* nghttp2 - HTTP/2 C 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 "nghttp2_config.h"
#ifdef __sgi
#define daemon _daemonize
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif // HAVE_UNISTD_H
#include <signal.h>
#include <getopt.h>
#include <cstdlib>
#include <cstring>
#include <cassert>
#include <string>
#include <iostream>
#include <string>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <nghttp2/nghttp2.h>
#include "app_helper.h"
#include "HttpServer.h"
#include "util.h"
#include "tls.h"
namespace nghttp2 {
namespace {
int parse_push_config(Config &config, const char *optarg) {
const char *eq = strchr(optarg, '=');
if (eq == NULL) {
return -1;
}
auto &paths = config.push[std::string(optarg, eq)];
auto optarg_end = optarg + strlen(optarg);
auto i = eq + 1;
for (;;) {
const char *j = strchr(i, ',');
if (j == NULL) {
j = optarg_end;
}
paths.emplace_back(i, j);
if (j == optarg_end) {
break;
}
i = j;
++i;
}
return 0;
}
} // namespace
namespace {
void print_version(std::ostream &out) {
out << "nghttpd nghttp2/" NGHTTP2_VERSION << std::endl;
}
} // namespace
namespace {
void print_usage(std::ostream &out) {
out << "Usage: nghttpd [OPTION]... <PORT> [<PRIVATE_KEY> <CERT>]\n"
<< "HTTP/2 server" << std::endl;
}
} // namespace
namespace {
void print_help(std::ostream &out) {
Config config;
print_usage(out);
out << R"(
<PORT> Specify listening port number.
<PRIVATE_KEY>
Set path to server's private key. Required unless
--no-tls is specified.
<CERT> Set path to server's certificate. Required unless
--no-tls is specified.
Options:
-a, --address=<ADDR>
The address to bind to. If not specified the default IP
address determined by getaddrinfo is used.
-D, --daemon
Run in a background. If -D is used, the current working
directory is changed to '/'. Therefore if this option
is used, -d option must be specified.
-V, --verify-client
The server sends a client certificate request. If the
client did not return a certificate, the handshake is
terminated. Currently, this option just requests a
client certificate and does not verify it.
-d, --htdocs=<PATH>
Specify document root. If this option is not specified,
the document root is the current working directory.
-v, --verbose
Print debug information such as reception/ transmission
of frames and name/value pairs.
--no-tls Disable SSL/TLS.
-c, --header-table-size=<SIZE>
Specify decoder header table size.
--encoder-header-table-size=<SIZE>
Specify encoder header table size. The decoder (client)
specifies the maximum dynamic table size it accepts.
Then the negotiated dynamic table size is the minimum of
this option value and the value which client specified.
--color Force colored log output.
-p, --push=<PATH>=<PUSH_PATH,...>
Push resources <PUSH_PATH>s when <PATH> is requested.
This option can be used repeatedly to specify multiple
push configurations. <PATH> and <PUSH_PATH>s are
relative to document root. See --htdocs option.
Example: -p/=/foo.png -p/doc=/bar.css
-b, --padding=<N>
Add at most <N> bytes to a frame payload as padding.
Specify 0 to disable padding.
-m, --max-concurrent-streams=<N>
Set the maximum number of the concurrent streams in one
HTTP/2 session.
Default: )"
<< config.max_concurrent_streams << R"(
-n, --workers=<N>
Set the number of worker threads.
Default: 1
-e, --error-gzip
Make error response gzipped.
-w, --window-bits=<N>
Sets the stream level initial window size to 2**<N>-1.
-W, --connection-window-bits=<N>
Sets the connection level initial window size to
2**<N>-1.
--dh-param-file=<PATH>
Path to file that contains DH parameters in PEM format.
Without this option, DHE cipher suites are not
available.
--early-response
Start sending response when request HEADERS is received,
rather than complete request is received.
--trailer=<HEADER>
Add a trailer header to a response. <HEADER> must not
include pseudo header field (header field name starting
with ':'). The trailer is sent only if a response has
body part. Example: --trailer 'foo: bar'.
--hexdump Display the incoming traffic in hexadecimal (Canonical
hex+ASCII display). If SSL/TLS is used, decrypted data
are used.
--echo-upload
Send back uploaded content if method is POST or PUT.
--mime-types-file=<PATH>
Path to file that contains MIME media types and the
extensions that represent them.
Default: )"
<< config.mime_types_file << R"(
--no-content-length
Don't send content-length header field.
--version Display version information and exit.
-h, --help Display this help and exit.
--
The <SIZE> argument is an integer and an optional unit (e.g., 10K is
10 * 1024). Units are K, M and G (powers of 1024).)"
<< std::endl;
}
} // namespace
int main(int argc, char **argv) {
tls::libssl_init();
#ifndef NOTHREADS
tls::LibsslGlobalLock lock;
#endif // NOTHREADS
Config config;
bool color = false;
auto mime_types_file_set_manually = false;
while (1) {
static int flag = 0;
constexpr static option long_options[] = {
{"address", required_argument, nullptr, 'a'},
{"daemon", no_argument, nullptr, 'D'},
{"htdocs", required_argument, nullptr, 'd'},
{"help", no_argument, nullptr, 'h'},
{"verbose", no_argument, nullptr, 'v'},
{"verify-client", no_argument, nullptr, 'V'},
{"header-table-size", required_argument, nullptr, 'c'},
{"push", required_argument, nullptr, 'p'},
{"padding", required_argument, nullptr, 'b'},
{"max-concurrent-streams", required_argument, nullptr, 'm'},
{"workers", required_argument, nullptr, 'n'},
{"error-gzip", no_argument, nullptr, 'e'},
{"window-bits", required_argument, nullptr, 'w'},
{"connection-window-bits", required_argument, nullptr, 'W'},
{"no-tls", no_argument, &flag, 1},
{"color", no_argument, &flag, 2},
{"version", no_argument, &flag, 3},
{"dh-param-file", required_argument, &flag, 4},
{"early-response", no_argument, &flag, 5},
{"trailer", required_argument, &flag, 6},
{"hexdump", no_argument, &flag, 7},
{"echo-upload", no_argument, &flag, 8},
{"mime-types-file", required_argument, &flag, 9},
{"no-content-length", no_argument, &flag, 10},
{"encoder-header-table-size", required_argument, &flag, 11},
{nullptr, 0, nullptr, 0}};
int option_index = 0;
int c = getopt_long(argc, argv, "DVb:c:d:ehm:n:p:va:w:W:", long_options,
&option_index);
if (c == -1) {
break;
}
switch (c) {
case 'a':
config.address = optarg;
break;
case 'D':
config.daemon = true;
break;
case 'V':
config.verify_client = true;
break;
case 'b':
config.padding = strtol(optarg, nullptr, 10);
break;
case 'd':
config.htdocs = optarg;
break;
case 'e':
config.error_gzip = true;
break;
case 'm': {
// max-concurrent-streams option
auto n = util::parse_uint(optarg);
if (n == -1) {
std::cerr << "-m: invalid argument: " << optarg << std::endl;
exit(EXIT_FAILURE);
}
config.max_concurrent_streams = n;
break;
}
case 'n': {
#ifdef NOTHREADS
std::cerr << "-n: WARNING: Threading disabled at build time, "
<< "no threads created." << std::endl;
#else
char *end;
errno = 0;
config.num_worker = strtoul(optarg, &end, 10);
if (errno == ERANGE || *end != '\0' || config.num_worker == 0) {
std::cerr << "-n: Bad option value: " << optarg << std::endl;
exit(EXIT_FAILURE);
}
#endif // NOTHREADS
break;
}
case 'h':
print_help(std::cout);
exit(EXIT_SUCCESS);
case 'v':
config.verbose = true;
break;
case 'c': {
auto n = util::parse_uint_with_unit(optarg);
if (n == -1) {
std::cerr << "-c: Bad option value: " << optarg << std::endl;
exit(EXIT_FAILURE);
}
if (n > std::numeric_limits<uint32_t>::max()) {
std::cerr << "-c: Value too large. It should be less than or equal to "
<< std::numeric_limits<uint32_t>::max() << std::endl;
exit(EXIT_FAILURE);
}
config.header_table_size = n;
break;
}
case 'p':
if (parse_push_config(config, optarg) != 0) {
std::cerr << "-p: Bad option value: " << optarg << std::endl;
}
break;
case 'w':
case 'W': {
char *endptr;
errno = 0;
auto n = strtoul(optarg, &endptr, 10);
if (errno != 0 || *endptr != '\0' || n >= 31) {
std::cerr << "-" << static_cast<char>(c)
<< ": specify the integer in the range [0, 30], inclusive"
<< std::endl;
exit(EXIT_FAILURE);
}
if (c == 'w') {
config.window_bits = n;
} else {
config.connection_window_bits = n;
}
break;
}
case '?':
util::show_candidates(argv[optind - 1], long_options);
exit(EXIT_FAILURE);
case 0:
switch (flag) {
case 1:
// no-tls option
config.no_tls = true;
break;
case 2:
// color option
color = true;
break;
case 3:
// version
print_version(std::cout);
exit(EXIT_SUCCESS);
case 4:
// dh-param-file
config.dh_param_file = optarg;
break;
case 5:
// early-response
config.early_response = true;
break;
case 6: {
// trailer option
auto header = optarg;
auto value = strchr(optarg, ':');
if (!value) {
std::cerr << "--trailer: invalid header: " << optarg << std::endl;
exit(EXIT_FAILURE);
}
*value = 0;
value++;
while (isspace(*value)) {
value++;
}
if (*value == 0) {
// This could also be a valid case for suppressing a header
// similar to curl
std::cerr << "--trailer: invalid header - value missing: " << optarg
<< std::endl;
exit(EXIT_FAILURE);
}
config.trailer.emplace_back(header, value, false);
util::inp_strlower(config.trailer.back().name);
break;
}
case 7:
// hexdump option
config.hexdump = true;
break;
case 8:
// echo-upload option
config.echo_upload = true;
break;
case 9:
// mime-types-file option
mime_types_file_set_manually = true;
config.mime_types_file = optarg;
break;
case 10:
// no-content-length option
config.no_content_length = true;
break;
case 11: {
// encoder-header-table-size option
auto n = util::parse_uint_with_unit(optarg);
if (n == -1) {
std::cerr << "--encoder-header-table-size: Bad option value: "
<< optarg << std::endl;
exit(EXIT_FAILURE);
}
if (n > std::numeric_limits<uint32_t>::max()) {
std::cerr << "--encoder-header-table-size: Value too large. It "
"should be less than or equal to "
<< std::numeric_limits<uint32_t>::max() << std::endl;
exit(EXIT_FAILURE);
}
config.encoder_header_table_size = n;
break;
}
}
break;
default:
break;
}
}
if (argc - optind < (config.no_tls ? 1 : 3)) {
print_usage(std::cerr);
std::cerr << "Too few arguments" << std::endl;
exit(EXIT_FAILURE);
}
config.port = strtol(argv[optind++], nullptr, 10);
if (!config.no_tls) {
config.private_key_file = argv[optind++];
config.cert_file = argv[optind++];
}
if (config.daemon) {
if (config.htdocs.empty()) {
print_usage(std::cerr);
std::cerr << "-d option must be specified when -D is used." << std::endl;
exit(EXIT_FAILURE);
}
#ifdef __sgi
if (daemon(0, 0, 0, 0) == -1) {
#else
if (daemon(0, 0) == -1) {
#endif
perror("daemon");
exit(EXIT_FAILURE);
}
}
if (config.htdocs.empty()) {
config.htdocs = "./";
}
if (util::read_mime_types(config.mime_types,
config.mime_types_file.c_str()) != 0) {
if (mime_types_file_set_manually) {
std::cerr << "--mime-types-file: Could not open mime types file: "
<< config.mime_types_file << std::endl;
}
}
auto &trailer_names = config.trailer_names;
for (auto &h : config.trailer) {
trailer_names += h.name;
trailer_names += ", ";
}
if (trailer_names.size() >= 2) {
trailer_names.resize(trailer_names.size() - 2);
}
set_color_output(color || isatty(fileno(stdout)));
struct sigaction act {};
act.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &act, nullptr);
reset_timer();
HttpServer server(&config);
if (server.run() != 0) {
exit(EXIT_FAILURE);
}
return 0;
}
} // namespace nghttp2
int main(int argc, char **argv) {
return nghttp2::run_app(nghttp2::main, argc, argv);
}
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