Implement the "list_hosts_json" action.

[collection4.git] / src / action_list_hosts_json.c

diff --git a/src/action_list_hosts_json.c b/src/action_list_hosts_json.c
new file mode 100644 (file)
index 0000000..029b700
--- /dev/null
+++ b/src/action_list_hosts_json.c
@@ -0,0 +1,104 @@
+/**
+ * collection4 - action_list_hosts_json.c
+ * Copyright (C) 2010,2011  Florian octo Forster
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA  02110-1301  USA
+ *
+ * Authors:
+ *   Florian octo Forster <ff at octo.it>
+ **/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include "action_list_hosts_json.h"
+#include "common.h"
+#include "graph.h"
+#include "graph_list.h"
+#include "utils_cgi.h"
+
+#include <fcgiapp.h>
+#include <fcgi_stdio.h>
+
+static void write_callback (__attribute__((unused)) void *ctx, /* {{{ */
+    const char *str, unsigned int len)
+{
+  fwrite ((void *) str, /* size = */ len, /* nmemb = */ 1, stdout);
+} /* }}} void write_callback */
+
+static int print_one_host (const char *host, /* {{{ */
+    void *user_data)
+{
+  yajl_gen handler = user_data;
+
+  yajl_gen_string (handler,
+      (unsigned char *) host,
+      (unsigned int) strlen (host));
+
+  return (0);
+} /* }}} int print_one_host */
+
+static int print_all_hosts (yajl_gen handler) /* {{{ */
+{
+  yajl_gen_array_open (handler);
+  gl_foreach_host (print_one_host, /* user_data = */ handler);
+  yajl_gen_array_close (handler);
+
+  return (0);
+} /* }}} int print_all_hosts */
+
+int action_list_hosts_json (void) /* {{{ */
+{
+  graph_config_t *cfg;
+
+  yajl_gen_config handler_config;
+  yajl_gen handler;
+
+  time_t now;
+  char time_buffer[128];
+  int status;
+
+  memset (&handler_config, 0, sizeof (handler_config));
+  handler_config.beautify = 1;
+  handler_config.indentString = "  ";
+
+  handler = yajl_gen_alloc2 (write_callback,
+      &handler_config,
+      /* alloc functions = */ NULL,
+      /* context = */ NULL);
+  if (handler == NULL)
+    return (-1);
+
+  printf ("Content-Type: application/json\n");
+
+  now = time (NULL);
+  status = time_to_rfc1123 (now + 300, time_buffer, sizeof (time_buffer));
+  if (status == 0)
+    printf ("Expires: %s\n"
+        "Cache-Control: public\n",
+        time_buffer);
+  printf ("\n");
+
+  print_all_hosts (handler);
+
+  yajl_gen_free (handler);
+
+  return (status);
+} /* }}} int action_list_hosts_json */
+
+/* vim: set sw=2 sts=2 et fdm=marker : */