mirror of
https://github.com/warmcat/libwebsockets.git
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c9731c5f17
This is a huge patch that should be a global NOP. For unix type platforms it enables -Wconversion to issue warnings (-> error) for all automatic casts that seem less than ideal but are normally concealed by the toolchain. This is things like passing an int to a size_t argument. Once enabled, I went through all args on my default build (which build most things) and tried to make the removed default cast explicit. With that approach it neither change nor bloat the code, since it compiles to whatever it was doing before, just with the casts made explicit... in a few cases I changed some length args from int to size_t but largely left the causes alone. From now on, new code that is relying on less than ideal casting will complain and nudge me to improve it by warnings.
149 lines
3.9 KiB
C
149 lines
3.9 KiB
C
/*
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* lws-minimal-raw-fallback http-server
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*
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* Written in 2010-2019 by 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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* This demonstrates the most minimal http server you can make with lws.
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*
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* To keep it simple, it serves stuff from the subdirectory
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* "./mount-origin" of the directory it was started in.
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* You can change that by changing mount.origin below.
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*
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* In addition, if the connection does to seem to be talking http, then it
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* falls back to a raw echo protocol.
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*/
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#include <libwebsockets.h>
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#include <string.h>
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#include <signal.h>
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struct pss__raw_echo {
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uint8_t buf[2048];
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int len;
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};
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static int interrupted;
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static const struct lws_http_mount mount = {
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/* .mount_next */ NULL, /* linked-list "next" */
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/* .mountpoint */ "/", /* mountpoint URL */
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/* .origin */ "./mount-origin", /* serve from dir */
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/* .def */ "index.html", /* default filename */
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/* .protocol */ NULL,
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/* .cgienv */ NULL,
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/* .extra_mimetypes */ NULL,
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/* .interpret */ NULL,
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/* .cgi_timeout */ 0,
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/* .cache_max_age */ 0,
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/* .auth_mask */ 0,
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/* .cache_reusable */ 0,
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/* .cache_revalidate */ 0,
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/* .cache_intermediaries */ 0,
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/* .origin_protocol */ LWSMPRO_FILE, /* files in a dir */
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/* .mountpoint_len */ 1, /* char count */
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/* .basic_auth_login_file */ NULL,
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};
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static int
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callback_raw_echo(struct lws *wsi, enum lws_callback_reasons reason, void *user,
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void *in, size_t len)
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{
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struct pss__raw_echo *pss = (struct pss__raw_echo *)user;
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switch (reason) {
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case LWS_CALLBACK_RAW_ADOPT:
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lwsl_notice("LWS_CALLBACK_RAW_ADOPT\n");
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break;
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case LWS_CALLBACK_RAW_RX:
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lwsl_notice("LWS_CALLBACK_RAW_RX %ld\n", (long)len);
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if (len > sizeof(pss->buf))
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len = sizeof(pss->buf);
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memcpy(pss->buf, in, len);
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pss->len = (int)len;
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lws_callback_on_writable(wsi);
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break;
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case LWS_CALLBACK_RAW_CLOSE:
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lwsl_notice("LWS_CALLBACK_RAW_CLOSE\n");
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break;
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case LWS_CALLBACK_RAW_WRITEABLE:
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lwsl_notice("LWS_CALLBACK_RAW_WRITEABLE\n");
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lws_write(wsi, pss->buf, (unsigned int)pss->len, LWS_WRITE_HTTP);
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break;
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default:
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break;
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}
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return lws_callback_http_dummy(wsi, reason, user, in, len);
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}
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static const struct lws_protocols protocols[] = {
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{ "raw-echo", callback_raw_echo, sizeof(struct pss__raw_echo), 2048 },
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{ NULL, NULL, 0, 0 }
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};
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void sigint_handler(int sig)
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{
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interrupted = 1;
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}
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int main(int argc, const char **argv)
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{
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struct lws_context_creation_info info;
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struct lws_context *context;
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const char *p;
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int n = 0, logs = LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE;
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signal(SIGINT, sigint_handler);
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if ((p = lws_cmdline_option(argc, argv, "-d")))
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logs = atoi(p);
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lws_set_log_level(logs, NULL);
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lwsl_user("LWS minimal raw fallback http server | "
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"visit http://localhost:7681\n");
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memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
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info.port = 7681;
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info.protocols = protocols;
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info.mounts = &mount;
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info.error_document_404 = "/404.html";
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info.options =
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LWS_SERVER_OPTION_HTTP_HEADERS_SECURITY_BEST_PRACTICES_ENFORCE |
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LWS_SERVER_OPTION_FALLBACK_TO_APPLY_LISTEN_ACCEPT_CONFIG;
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info.listen_accept_role = "raw-skt";
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info.listen_accept_protocol = "raw-echo";
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#if defined(LWS_WITH_TLS)
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if (lws_cmdline_option(argc, argv, "-s")) {
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info.options |= LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT |
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LWS_SERVER_OPTION_ALLOW_NON_SSL_ON_SSL_PORT;
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info.ssl_cert_filepath = "localhost-100y.cert";
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info.ssl_private_key_filepath = "localhost-100y.key";
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if (lws_cmdline_option(argc, argv, "-u"))
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info.options |= LWS_SERVER_OPTION_REDIRECT_HTTP_TO_HTTPS;
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if (lws_cmdline_option(argc, argv, "-h"))
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info.options |= LWS_SERVER_OPTION_ALLOW_HTTP_ON_HTTPS_LISTENER;
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}
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#endif
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context = lws_create_context(&info);
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if (!context) {
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lwsl_err("lws init failed\n");
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return 1;
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}
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while (n >= 0 && !interrupted)
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n = lws_service(context, 0);
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lws_context_destroy(context);
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return 0;
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}
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