1 #include <inttypes.h> 2 #include <stdio.h> 3 #include <stdlib.h> 4 #include <string.h> 5 #include <uv.h> 6 7 uv_loop_t *loop; 8 uv_process_t child_req; 9 uv_process_options_t options; 10 11 void cleanup_handles(uv_process_t *req, int64_t exit_status, int term_signal) { 12 fprintf(stderr, "Process exited with status %" PRId64 ", signal %d\n", exit_status, term_signal); 13 uv_close((uv_handle_t*) req->data, NULL); 14 uv_close((uv_handle_t*) req, NULL); 15 } 16 17 void invoke_cgi_script(uv_tcp_t *client) { 18 size_t size = 500; 19 char path[size]; 20 uv_exepath(path, &size); 21 strcpy(path + (strlen(path) - strlen("cgi")), "tick"); 22 23 char* args[2]; 24 args[0] = path; 25 args[1] = NULL; 26 27 /* ... finding the executable path and setting up arguments ... */ 28 29 options.stdio_count = 3; 30 uv_stdio_container_t child_stdio[3]; 31 child_stdio[0].flags = UV_IGNORE; 32 child_stdio[1].flags = UV_INHERIT_STREAM; 33 child_stdio[1].data.stream = (uv_stream_t*) client; 34 child_stdio[2].flags = UV_IGNORE; 35 options.stdio = child_stdio; 36 37 options.exit_cb = cleanup_handles; 38 options.file = args[0]; 39 options.args = args; 40 41 // Set this so we can close the socket after the child process exits. 42 child_req.data = (void*) client; 43 int r; 44 if ((r = uv_spawn(loop, &child_req, &options))) { 45 fprintf(stderr, "%s\n", uv_strerror(r)); 46 return; 47 } 48 } 49 50 void on_new_connection(uv_stream_t *server, int status) { 51 if (status == -1) { 52 // error! 53 return; 54 } 55 56 uv_tcp_t *client = (uv_tcp_t*) malloc(sizeof(uv_tcp_t)); 57 uv_tcp_init(loop, client); 58 if (uv_accept(server, (uv_stream_t*) client) == 0) { 59 invoke_cgi_script(client); 60 } 61 else { 62 uv_close((uv_handle_t*) client, NULL); 63 } 64 } 65 66 int main() { 67 loop = uv_default_loop(); 68 69 uv_tcp_t server; 70 uv_tcp_init(loop, &server); 71 72 struct sockaddr_in bind_addr; 73 uv_ip4_addr("0.0.0.0", 7000, &bind_addr); 74 uv_tcp_bind(&server, (const struct sockaddr *)&bind_addr, 0); 75 int r = uv_listen((uv_stream_t*) &server, 128, on_new_connection); 76 if (r) { 77 fprintf(stderr, "Listen error %s\n", uv_err_name(r)); 78 return 1; 79 } 80 return uv_run(loop, UV_RUN_DEFAULT); 81 } 82