From d59d6e6f22b4c11c37e34843d111a748df73bda2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Sa=C3=BAl=20Ibarra=20Corretg=C3=A9?= Date: Tue, 25 Apr 2017 08:27:52 +0200 Subject: doc: add code samples from uvbook (unadapted) PR-URL: https://github.com/libuv/libuv/pull/1246 Reviewed-By: Colin Ihrig Reviewed-By: Santiago Gimeno --- docs/code/cgi/main.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 docs/code/cgi/main.c (limited to 'docs/code/cgi/main.c') diff --git a/docs/code/cgi/main.c b/docs/code/cgi/main.c new file mode 100644 index 00000000..d2e34265 --- /dev/null +++ b/docs/code/cgi/main.c @@ -0,0 +1,81 @@ +#include +#include +#include +#include +#include + +uv_loop_t *loop; +uv_process_t child_req; +uv_process_options_t options; + +void cleanup_handles(uv_process_t *req, int64_t exit_status, int term_signal) { + fprintf(stderr, "Process exited with status %" PRId64 ", signal %d\n", exit_status, term_signal); + uv_close((uv_handle_t*) req->data, NULL); + uv_close((uv_handle_t*) req, NULL); +} + +void invoke_cgi_script(uv_tcp_t *client) { + size_t size = 500; + char path[size]; + uv_exepath(path, &size); + strcpy(path + (strlen(path) - strlen("cgi")), "tick"); + + char* args[2]; + args[0] = path; + args[1] = NULL; + + /* ... finding the executable path and setting up arguments ... */ + + options.stdio_count = 3; + uv_stdio_container_t child_stdio[3]; + child_stdio[0].flags = UV_IGNORE; + child_stdio[1].flags = UV_INHERIT_STREAM; + child_stdio[1].data.stream = (uv_stream_t*) client; + child_stdio[2].flags = UV_IGNORE; + options.stdio = child_stdio; + + options.exit_cb = cleanup_handles; + options.file = args[0]; + options.args = args; + + // Set this so we can close the socket after the child process exits. + child_req.data = (void*) client; + int r; + if ((r = uv_spawn(loop, &child_req, &options))) { + fprintf(stderr, "%s\n", uv_strerror(r)); + return; + } +} + +void on_new_connection(uv_stream_t *server, int status) { + if (status == -1) { + // error! + return; + } + + uv_tcp_t *client = (uv_tcp_t*) malloc(sizeof(uv_tcp_t)); + uv_tcp_init(loop, client); + if (uv_accept(server, (uv_stream_t*) client) == 0) { + invoke_cgi_script(client); + } + else { + uv_close((uv_handle_t*) client, NULL); + } +} + +int main() { + loop = uv_default_loop(); + + uv_tcp_t server; + uv_tcp_init(loop, &server); + + struct sockaddr_in bind_addr; + uv_ip4_addr("0.0.0.0", 7000, &bind_addr); + uv_tcp_bind(&server, (const struct sockaddr *)&bind_addr, 0); + int r = uv_listen((uv_stream_t*) &server, 128, on_new_connection); + if (r) { + fprintf(stderr, "Listen error %s\n", uv_err_name(r)); + return 1; + } + return uv_run(loop, UV_RUN_DEFAULT); +} -- cgit v1.2.3