497 lines
13 KiB
C
497 lines
13 KiB
C
/*
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* libwebsockets-test-server - libwebsockets test implementation
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*
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* Copyright (C) 2010-2016 Andy Green <andy@warmcat.com>
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*
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* This file is made available under the Creative Commons CC0 1.0
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* Universal Public Domain Dedication.
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*
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* The person who associated a work with this deed has dedicated
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* the work to the public domain by waiving all of his or her rights
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* to the work worldwide under copyright law, including all related
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* and neighboring rights, to the extent allowed by law. You can copy,
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* modify, distribute and perform the work, even for commercial purposes,
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* all without asking permission.
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*
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* The test apps are intended to be adapted for use in your code, which
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* may be proprietary. So unlike the library itself, they are licensed
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* Public Domain.
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*/
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#include "test-server.h"
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int close_testing;
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int max_poll_elements;
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int debug_level = 7;
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#ifdef EXTERNAL_POLL
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struct lws_pollfd *pollfds;
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int *fd_lookup;
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int count_pollfds;
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#endif
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volatile int force_exit = 0;
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struct lws_context *context;
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struct lws_plat_file_ops fops_plat;
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/* http server gets files from this path */
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#define LOCAL_RESOURCE_PATH INSTALL_DATADIR"/libwebsockets-test-server"
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char *resource_path = LOCAL_RESOURCE_PATH;
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#if defined(LWS_USE_POLARSSL)
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#else
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#if defined(LWS_USE_MBEDTLS)
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#else
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#if defined(LWS_OPENSSL_SUPPORT) && defined(LWS_HAVE_SSL_CTX_set1_param)
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char crl_path[1024] = "";
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#endif
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#endif
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#endif
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/* singlethreaded version --> no locks */
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void test_server_lock(int care)
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{
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}
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void test_server_unlock(int care)
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{
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}
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/*
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* This demo server shows how to use libwebsockets for one or more
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* websocket protocols in the same server
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*
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* It defines the following websocket protocols:
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*
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* dumb-increment-protocol: once the socket is opened, an incrementing
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* ascii string is sent down it every 50ms.
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* If you send "reset\n" on the websocket, then
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* the incrementing number is reset to 0.
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*
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* lws-mirror-protocol: copies any received packet to every connection also
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* using this protocol, including the sender
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*/
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enum demo_protocols {
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/* always first */
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PROTOCOL_HTTP = 0,
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PROTOCOL_DUMB_INCREMENT,
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PROTOCOL_LWS_MIRROR,
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PROTOCOL_LWS_ECHOGEN,
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PROTOCOL_LWS_STATUS,
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/* always last */
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DEMO_PROTOCOL_COUNT
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};
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/* list of supported protocols and callbacks */
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static struct lws_protocols protocols[] = {
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/* first protocol must always be HTTP handler */
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{
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"http-only", /* name */
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callback_http, /* callback */
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sizeof (struct per_session_data__http), /* per_session_data_size */
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0, /* max frame size / rx buffer */
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},
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{
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"dumb-increment-protocol",
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callback_dumb_increment,
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sizeof(struct per_session_data__dumb_increment),
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10, /* rx buf size must be >= permessage-deflate rx size */
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},
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{
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"lws-mirror-protocol",
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callback_lws_mirror,
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sizeof(struct per_session_data__lws_mirror),
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128, /* rx buf size must be >= permessage-deflate rx size */
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},
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{
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"lws-echogen",
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callback_lws_echogen,
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sizeof(struct per_session_data__echogen),
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128, /* rx buf size must be >= permessage-deflate rx size */
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},
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{
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"lws-status",
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callback_lws_status,
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sizeof(struct per_session_data__lws_status),
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128, /* rx buf size must be >= permessage-deflate rx size */
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},
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{ NULL, NULL, 0, 0 } /* terminator */
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};
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/* this shows how to override the lws file operations. You don't need
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* to do any of this unless you have a reason (eg, want to serve
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* compressed files without decompressing the whole archive)
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*/
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static lws_filefd_type
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test_server_fops_open(struct lws *wsi, const char *filename,
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unsigned long *filelen, int flags)
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{
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lws_filefd_type n;
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/* call through to original platform implementation */
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n = fops_plat.open(wsi, filename, filelen, flags);
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lwsl_info("%s: opening %s, ret %ld, len %lu\n", __func__, filename,
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(long)n, *filelen);
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return n;
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}
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void sighandler(int sig)
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{
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force_exit = 1;
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lws_cancel_service(context);
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}
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static const struct lws_extension exts[] = {
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{
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"permessage-deflate",
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lws_extension_callback_pm_deflate,
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"permessage-deflate"
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},
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{
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"deflate-frame",
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lws_extension_callback_pm_deflate,
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"deflate_frame"
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},
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{ NULL, NULL, NULL /* terminator */ }
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};
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static struct option options[] = {
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{ "help", no_argument, NULL, 'h' },
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{ "debug", required_argument, NULL, 'd' },
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{ "port", required_argument, NULL, 'p' },
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{ "ssl", no_argument, NULL, 's' },
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{ "allow-non-ssl", no_argument, NULL, 'a' },
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{ "interface", required_argument, NULL, 'i' },
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{ "closetest", no_argument, NULL, 'c' },
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{ "ssl-cert", required_argument, NULL, 'C' },
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{ "ssl-key", required_argument, NULL, 'K' },
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{ "ssl-ca", required_argument, NULL, 'A' },
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#if defined(LWS_OPENSSL_SUPPORT)
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{ "ssl-verify-client", no_argument, NULL, 'v' },
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#if defined(LWS_HAVE_SSL_CTX_set1_param)
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{ "ssl-crl", required_argument, NULL, 'R' },
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#endif
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#endif
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{ "libev", no_argument, NULL, 'e' },
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#ifndef LWS_NO_DAEMONIZE
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{ "daemonize", no_argument, NULL, 'D' },
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#endif
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{ "resource_path", required_argument, NULL, 'r' },
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{ NULL, 0, 0, 0 }
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};
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int main(int argc, char **argv)
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{
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struct lws_context_creation_info info;
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char interface_name[128] = "";
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unsigned int ms, oldms = 0;
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const char *iface = NULL;
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char cert_path[1024] = "";
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char key_path[1024] = "";
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char ca_path[1024] = "";
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int uid = -1, gid = -1;
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int use_ssl = 0;
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int opts = 0;
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int n = 0;
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#ifndef _WIN32
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/* LOG_PERROR is not POSIX standard, and may not be portable */
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#ifdef __sun
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int syslog_options = LOG_PID;
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#else
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int syslog_options = LOG_PID | LOG_PERROR;
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#endif
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#endif
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#ifndef LWS_NO_DAEMONIZE
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int daemonize = 0;
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#endif
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/*
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* take care to zero down the info struct, he contains random garbaage
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* from the stack otherwise
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*/
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memset(&info, 0, sizeof info);
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info.port = 7681;
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while (n >= 0) {
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n = getopt_long(argc, argv, "eci:hsap:d:Dr:C:K:A:R:vu:g:", options, NULL);
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if (n < 0)
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continue;
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switch (n) {
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case 'e':
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opts |= LWS_SERVER_OPTION_LIBEV;
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break;
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#ifndef LWS_NO_DAEMONIZE
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case 'D':
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daemonize = 1;
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#if !defined(_WIN32) && !defined(__sun)
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syslog_options &= ~LOG_PERROR;
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#endif
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break;
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#endif
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case 'u':
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uid = atoi(optarg);
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break;
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case 'g':
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gid = atoi(optarg);
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break;
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case 'd':
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debug_level = atoi(optarg);
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break;
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case 's':
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use_ssl = 1;
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break;
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case 'a':
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opts |= LWS_SERVER_OPTION_ALLOW_NON_SSL_ON_SSL_PORT;
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break;
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case 'p':
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info.port = atoi(optarg);
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break;
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case 'i':
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strncpy(interface_name, optarg, sizeof interface_name);
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interface_name[(sizeof interface_name) - 1] = '\0';
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iface = interface_name;
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break;
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case 'c':
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close_testing = 1;
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fprintf(stderr, " Close testing mode -- closes on "
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"client after 50 dumb increments"
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"and suppresses lws_mirror spam\n");
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break;
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case 'r':
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resource_path = optarg;
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printf("Setting resource path to \"%s\"\n", resource_path);
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break;
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case 'C':
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strncpy(cert_path, optarg, sizeof(cert_path) - 1);
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cert_path[sizeof(cert_path) - 1] = '\0';
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break;
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case 'K':
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strncpy(key_path, optarg, sizeof(key_path) - 1);
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key_path[sizeof(key_path) - 1] = '\0';
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break;
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case 'A':
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strncpy(ca_path, optarg, sizeof(ca_path) - 1);
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ca_path[sizeof(ca_path) - 1] = '\0';
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break;
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#if defined(LWS_OPENSSL_SUPPORT)
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case 'v':
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use_ssl = 1;
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opts |= LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT;
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break;
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#if defined(LWS_USE_POLARSSL)
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#else
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#if defined(LWS_USE_MBEDTLS)
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#else
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#if defined(LWS_HAVE_SSL_CTX_set1_param)
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case 'R':
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strncpy(crl_path, optarg, sizeof(crl_path) - 1);
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crl_path[sizeof(crl_path) - 1] = '\0';
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break;
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#endif
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#endif
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#endif
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#endif
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case 'h':
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fprintf(stderr, "Usage: test-server "
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"[--port=<p>] [--ssl] "
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"[-d <log bitfield>] "
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"[--resource_path <path>]\n");
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exit(1);
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}
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}
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#if !defined(LWS_NO_DAEMONIZE) && !defined(WIN32)
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/*
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* normally lock path would be /var/lock/lwsts or similar, to
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* simplify getting started without having to take care about
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* permissions or running as root, set to /tmp/.lwsts-lock
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*/
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if (daemonize && lws_daemonize("/tmp/.lwsts-lock")) {
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fprintf(stderr, "Failed to daemonize\n");
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return 10;
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}
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#endif
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signal(SIGINT, sighandler);
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#ifndef _WIN32
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/* we will only try to log things according to our debug_level */
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setlogmask(LOG_UPTO (LOG_DEBUG));
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openlog("lwsts", syslog_options, LOG_DAEMON);
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#endif
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/* tell the library what debug level to emit and to send it to syslog */
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lws_set_log_level(debug_level, lwsl_emit_syslog);
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lwsl_notice("libwebsockets test server - license LGPL2.1+SLE\n");
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lwsl_notice("(C) Copyright 2010-2016 Andy Green <andy@warmcat.com>\n");
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printf("Using resource path \"%s\"\n", resource_path);
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#ifdef EXTERNAL_POLL
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max_poll_elements = getdtablesize();
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pollfds = malloc(max_poll_elements * sizeof (struct lws_pollfd));
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fd_lookup = malloc(max_poll_elements * sizeof (int));
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if (pollfds == NULL || fd_lookup == NULL) {
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lwsl_err("Out of memory pollfds=%d\n", max_poll_elements);
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return -1;
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}
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#endif
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info.iface = iface;
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info.protocols = protocols;
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info.ssl_cert_filepath = NULL;
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info.ssl_private_key_filepath = NULL;
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if (use_ssl) {
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if (strlen(resource_path) > sizeof(cert_path) - 32) {
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lwsl_err("resource path too long\n");
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return -1;
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}
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if (!cert_path[0])
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sprintf(cert_path, "%s/libwebsockets-test-server.pem",
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resource_path);
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if (strlen(resource_path) > sizeof(key_path) - 32) {
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lwsl_err("resource path too long\n");
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return -1;
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}
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if (!key_path[0])
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sprintf(key_path, "%s/libwebsockets-test-server.key.pem",
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resource_path);
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info.ssl_cert_filepath = cert_path;
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info.ssl_private_key_filepath = key_path;
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if (ca_path[0])
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info.ssl_ca_filepath = ca_path;
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}
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info.gid = gid;
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info.uid = uid;
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info.max_http_header_pool = 16;
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info.options = opts | LWS_SERVER_OPTION_VALIDATE_UTF8;
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info.extensions = exts;
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info.timeout_secs = 5;
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info.ssl_cipher_list = "ECDHE-ECDSA-AES256-GCM-SHA384:"
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"ECDHE-RSA-AES256-GCM-SHA384:"
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"DHE-RSA-AES256-GCM-SHA384:"
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"ECDHE-RSA-AES256-SHA384:"
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"HIGH:!aNULL:!eNULL:!EXPORT:"
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"!DES:!MD5:!PSK:!RC4:!HMAC_SHA1:"
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"!SHA1:!DHE-RSA-AES128-GCM-SHA256:"
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"!DHE-RSA-AES128-SHA256:"
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"!AES128-GCM-SHA256:"
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"!AES128-SHA256:"
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"!DHE-RSA-AES256-SHA256:"
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"!AES256-GCM-SHA384:"
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"!AES256-SHA256";
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if (use_ssl)
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/* redirect guys coming on http */
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info.options |= LWS_SERVER_OPTION_REDIRECT_HTTP_TO_HTTPS;
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context = lws_create_context(&info);
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if (context == NULL) {
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lwsl_err("libwebsocket init failed\n");
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return -1;
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}
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/* this shows how to override the lws file operations. You don't need
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* to do any of this unless you have a reason (eg, want to serve
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* compressed files without decompressing the whole archive)
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*/
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/* stash original platform fops */
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fops_plat = *(lws_get_fops(context));
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/* override the active fops */
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lws_get_fops(context)->open = test_server_fops_open;
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n = 0;
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#ifdef EXTERNAL_POLL
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int ms_1sec = 0;
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#endif
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while (n >= 0 && !force_exit) {
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struct timeval tv;
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gettimeofday(&tv, NULL);
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/*
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* This provokes the LWS_CALLBACK_SERVER_WRITEABLE for every
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* live websocket connection using the DUMB_INCREMENT protocol,
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* as soon as it can take more packets (usually immediately)
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*/
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ms = (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
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if ((ms - oldms) > 50) {
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lws_callback_on_writable_all_protocol(context,
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&protocols[PROTOCOL_DUMB_INCREMENT]);
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oldms = ms;
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}
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#ifdef EXTERNAL_POLL
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/*
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* this represents an existing server's single poll action
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* which also includes libwebsocket sockets
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*/
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n = poll(pollfds, count_pollfds, 50);
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if (n < 0)
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continue;
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if (n) {
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for (n = 0; n < count_pollfds; n++)
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if (pollfds[n].revents)
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/*
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* returns immediately if the fd does not
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* match anything under libwebsockets
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* control
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*/
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if (lws_service_fd(context,
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&pollfds[n]) < 0)
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goto done;
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/* if needed, force-service wsis that may not have read all input */
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while (!lws_service_adjust_timeout(context, 1, 0)) {
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lwsl_notice("extpoll doing forced service!\n");
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lws_plat_service_tsi(context, -1, 0);
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}
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} else {
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/* no revents, but before polling again, make lws check for any timeouts */
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if (ms - ms_1sec > 1000) {
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lwsl_notice("1 per sec\n");
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lws_service_fd(context, NULL);
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ms_1sec = ms;
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}
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}
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#else
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/*
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* If libwebsockets sockets are all we care about,
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* you can use this api which takes care of the poll()
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* and looping through finding who needed service.
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*
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* If no socket needs service, it'll return anyway after
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* the number of ms in the second argument.
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*/
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n = lws_service(context, 50);
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#endif
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}
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#ifdef EXTERNAL_POLL
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done:
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#endif
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lws_context_destroy(context);
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lwsl_notice("libwebsockets-test-server exited cleanly\n");
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#ifndef _WIN32
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closelog();
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#endif
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return 0;
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}
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