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8313896 Oct 18, 2017
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@cpq @rojer @alashkin @mkmik
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/*
* Copyright (c) 2014 Cesanta Software Limited
* All rights reserved
*/
#include "mongoose.h"
static const char *s_http_port = "8000";
static struct mg_serve_http_opts s_http_server_opts;
static void handle_sum_call(struct mg_connection *nc, struct http_message *hm) {
char n1[100], n2[100];
double result;
/* Get form variables */
mg_get_http_var(&hm->body, "n1", n1, sizeof(n1));
mg_get_http_var(&hm->body, "n2", n2, sizeof(n2));
/* Send headers */
mg_printf(nc, "%s", "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
/* Compute the result and send it back as a JSON object */
result = strtod(n1, NULL) + strtod(n2, NULL);
mg_printf_http_chunk(nc, "{ \"result\": %lf }", result);
mg_send_http_chunk(nc, "", 0); /* Send empty chunk, the end of response */
}
static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
struct http_message *hm = (struct http_message *) ev_data;
switch (ev) {
case MG_EV_HTTP_REQUEST:
if (mg_vcmp(&hm->uri, "/api/v1/sum") == 0) {
handle_sum_call(nc, hm); /* Handle RESTful call */
} else if (mg_vcmp(&hm->uri, "/printcontent") == 0) {
char buf[100] = {0};
memcpy(buf, hm->body.p,
sizeof(buf) - 1 < hm->body.len ? sizeof(buf) - 1 : hm->body.len);
printf("%s\n", buf);
} else {
mg_serve_http(nc, hm, s_http_server_opts); /* Serve static content */
}
break;
default:
break;
}
}
int main(int argc, char *argv[]) {
struct mg_mgr mgr;
struct mg_connection *nc;
struct mg_bind_opts bind_opts;
int i;
char *cp;
const char *err_str;
#if MG_ENABLE_SSL
const char *ssl_cert = NULL;
#endif
mg_mgr_init(&mgr, NULL);
/* Use current binary directory as document root */
if (argc > 0 && ((cp = strrchr(argv[0], DIRSEP)) != NULL)) {
*cp = '\0';
s_http_server_opts.document_root = argv[0];
}
/* Process command line options to customize HTTP server */
for (i = 1; i < argc; i++) {
if (strcmp(argv[i], "-D") == 0 && i + 1 < argc) {
mgr.hexdump_file = argv[++i];
} else if (strcmp(argv[i], "-d") == 0 && i + 1 < argc) {
s_http_server_opts.document_root = argv[++i];
} else if (strcmp(argv[i], "-p") == 0 && i + 1 < argc) {
s_http_port = argv[++i];
} else if (strcmp(argv[i], "-a") == 0 && i + 1 < argc) {
s_http_server_opts.auth_domain = argv[++i];
} else if (strcmp(argv[i], "-P") == 0 && i + 1 < argc) {
s_http_server_opts.global_auth_file = argv[++i];
} else if (strcmp(argv[i], "-A") == 0 && i + 1 < argc) {
s_http_server_opts.per_directory_auth_file = argv[++i];
} else if (strcmp(argv[i], "-r") == 0 && i + 1 < argc) {
s_http_server_opts.url_rewrites = argv[++i];
#if MG_ENABLE_HTTP_CGI
} else if (strcmp(argv[i], "-i") == 0 && i + 1 < argc) {
s_http_server_opts.cgi_interpreter = argv[++i];
#endif
#if MG_ENABLE_SSL
} else if (strcmp(argv[i], "-s") == 0 && i + 1 < argc) {
ssl_cert = argv[++i];
#endif
} else {
fprintf(stderr, "Unknown option: [%s]\n", argv[i]);
exit(1);
}
}
/* Set HTTP server options */
memset(&bind_opts, 0, sizeof(bind_opts));
bind_opts.error_string = &err_str;
#if MG_ENABLE_SSL
if (ssl_cert != NULL) {
bind_opts.ssl_cert = ssl_cert;
}
#endif
nc = mg_bind_opt(&mgr, s_http_port, ev_handler, bind_opts);
if (nc == NULL) {
fprintf(stderr, "Error starting server on port %s: %s\n", s_http_port,
*bind_opts.error_string);
exit(1);
}
mg_set_protocol_http_websocket(nc);
s_http_server_opts.enable_directory_listing = "yes";
printf("Starting RESTful server on port %s, serving %s\n", s_http_port,
s_http_server_opts.document_root);
for (;;) {
mg_mgr_poll(&mgr, 1000);
}
mg_mgr_free(&mgr);
return 0;
}