1 /**
2 * collection4 - action_graph_def_json.c
3 * Copyright (C) 2010 Florian octo Forster
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301 USA
19 *
20 * Authors:
21 * Florian octo Forster <ff at octo.it>
22 **/
24 #include <stdlib.h>
25 #include <stdio.h>
26 #include <string.h>
27 #include <errno.h>
28 #include <stdint.h>
29 #include <inttypes.h>
30 #include <assert.h>
32 #include "action_graph_def_json.h"
33 #include "common.h"
34 #include "graph.h"
35 #include "graph_list.h"
36 #include "utils_cgi.h"
38 #include <fcgiapp.h>
39 #include <fcgi_stdio.h>
41 /* Expire data after one day. */
42 #define EXPIRES_SECS 86400
44 static void write_callback (__attribute__((unused)) void *ctx, /* {{{ */
45 const char *str, unsigned int len)
46 {
47 fwrite ((void *) str, /* size = */ len, /* nmemb = */ 1, stdout);
48 } /* }}} void write_callback */
50 int action_graph_def_json (void) /* {{{ */
51 {
52 graph_config_t *cfg;
54 yajl_gen_config handler_config;
55 yajl_gen handler;
57 time_t now;
58 char time_buffer[128];
59 int status;
61 cfg = gl_graph_get_selected ();
62 if (cfg == NULL)
63 return (ENOMEM);
65 memset (&handler_config, 0, sizeof (handler_config));
66 handler_config.beautify = 1;
67 handler_config.indentString = " ";
69 handler = yajl_gen_alloc2 (write_callback,
70 &handler_config,
71 /* alloc functions = */ NULL,
72 /* context = */ NULL);
73 if (handler == NULL)
74 return (-1);
76 printf ("Content-Type: application/json\n");
78 now = time (NULL);
79 status = time_to_rfc1123 (now + EXPIRES_SECS, time_buffer, sizeof (time_buffer));
80 if (status == 0)
81 printf ("Expires: %s\n"
82 "Cache-Control: public\n",
83 time_buffer);
84 printf ("\n");
86 status = graph_def_to_json (cfg, handler);
88 yajl_gen_free (handler);
90 return (status);
91 } /* }}} int action_graph_def_json */
93 /* vim: set sw=2 sts=2 et fdm=marker : */