![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/src/nginx.c b/src/nginx.c
--- /dev/null
+++ b/src/nginx.c
@@ -0,0 +1,315 @@
+/**
+ * collectd - src/nginx.c
+ * Copyright (C) 2006-2010 Florian octo Forster
+ * Copyright (C) 2008 Sebastian Harl
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Florian octo Forster <octo at collectd.org>
+ * Sebastian Harl <sh at tokkee.org>
+ **/
+
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
+#include "configfile.h"
+
+#include <curl/curl.h>
+
+static char *url = NULL;
+static char *user = NULL;
+static char *pass = NULL;
+static char *verify_peer = NULL;
+static char *verify_host = NULL;
+static char *cacert = NULL;
+static char *timeout = NULL;
+
+static CURL *curl = NULL;
+
+static char nginx_buffer[16384];
+static size_t nginx_buffer_len = 0;
+static char nginx_curl_error[CURL_ERROR_SIZE];
+
+static const char *config_keys[] =
+{
+ "URL",
+ "User",
+ "Password",
+ "VerifyPeer",
+ "VerifyHost",
+ "CACert",
+ "Timeout"
+};
+static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
+
+static size_t nginx_curl_callback (void *buf, size_t size, size_t nmemb,
+ void __attribute__((unused)) *stream)
+{
+ size_t len = size * nmemb;
+
+ /* Check if the data fits into the memory. If not, truncate it. */
+ if ((nginx_buffer_len + len) >= sizeof (nginx_buffer))
+ {
+ assert (sizeof (nginx_buffer) > nginx_buffer_len);
+ len = (sizeof (nginx_buffer) - 1) - nginx_buffer_len;
+ }
+
+ if (len <= 0)
+ return (len);
+
+ memcpy (&nginx_buffer[nginx_buffer_len], buf, len);
+ nginx_buffer_len += len;
+ nginx_buffer[nginx_buffer_len] = 0;
+
+ return (len);
+}
+
+static int config_set (char **var, const char *value)
+{
+ if (*var != NULL)
+ {
+ free (*var);
+ *var = NULL;
+ }
+
+ if ((*var = strdup (value)) == NULL)
+ return (1);
+ else
+ return (0);
+}
+
+static int config (const char *key, const char *value)
+{
+ if (strcasecmp (key, "url") == 0)
+ return (config_set (&url, value));
+ else if (strcasecmp (key, "user") == 0)
+ return (config_set (&user, value));
+ else if (strcasecmp (key, "password") == 0)
+ return (config_set (&pass, value));
+ else if (strcasecmp (key, "verifypeer") == 0)
+ return (config_set (&verify_peer, value));
+ else if (strcasecmp (key, "verifyhost") == 0)
+ return (config_set (&verify_host, value));
+ else if (strcasecmp (key, "cacert") == 0)
+ return (config_set (&cacert, value));
+ else if (strcasecmp (key, "timeout") == 0)
+ return (config_set (&timeout, value));
+ else
+ return (-1);
+} /* int config */
+
+static int init (void)
+{
+ if (curl != NULL)
+ curl_easy_cleanup (curl);
+
+ if ((curl = curl_easy_init ()) == NULL)
+ {
+ ERROR ("nginx plugin: curl_easy_init failed.");
+ return (-1);
+ }
+
+ curl_easy_setopt (curl, CURLOPT_NOSIGNAL, 1L);
+ curl_easy_setopt (curl, CURLOPT_WRITEFUNCTION, nginx_curl_callback);
+ curl_easy_setopt (curl, CURLOPT_USERAGENT, COLLECTD_USERAGENT);
+ curl_easy_setopt (curl, CURLOPT_ERRORBUFFER, nginx_curl_error);
+
+ if (user != NULL)
+ {
+#ifdef HAVE_CURLOPT_USERNAME
+ curl_easy_setopt (curl, CURLOPT_USERNAME, user);
+ curl_easy_setopt (curl, CURLOPT_PASSWORD, (pass == NULL) ? "" : pass);
+#else
+ static char credentials[1024];
+ int status = ssnprintf (credentials, sizeof (credentials),
+ "%s:%s", user, pass == NULL ? "" : pass);
+ if ((status < 0) || ((size_t) status >= sizeof (credentials)))
+ {
+ ERROR ("nginx plugin: Credentials would have been truncated.");
+ return (-1);
+ }
+
+ curl_easy_setopt (curl, CURLOPT_USERPWD, credentials);
+#endif
+ }
+
+ if (url != NULL)
+ {
+ curl_easy_setopt (curl, CURLOPT_URL, url);
+ }
+
+ curl_easy_setopt (curl, CURLOPT_FOLLOWLOCATION, 1L);
+ curl_easy_setopt (curl, CURLOPT_MAXREDIRS, 50L);
+
+ if ((verify_peer == NULL) || IS_TRUE (verify_peer))
+ {
+ curl_easy_setopt (curl, CURLOPT_SSL_VERIFYPEER, 1L);
+ }
+ else
+ {
+ curl_easy_setopt (curl, CURLOPT_SSL_VERIFYPEER, 0L);
+ }
+
+ if ((verify_host == NULL) || IS_TRUE (verify_host))
+ {
+ curl_easy_setopt (curl, CURLOPT_SSL_VERIFYHOST, 2L);
+ }
+ else
+ {
+ curl_easy_setopt (curl, CURLOPT_SSL_VERIFYHOST, 0L);
+ }
+
+ if (cacert != NULL)
+ {
+ curl_easy_setopt (curl, CURLOPT_CAINFO, cacert);
+ }
+
+#ifdef HAVE_CURLOPT_TIMEOUT_MS
+ if (timeout != NULL)
+ {
+ curl_easy_setopt (curl, CURLOPT_TIMEOUT_MS, atol(timeout));
+ }
+ else
+ {
+ curl_easy_setopt (curl, CURLOPT_TIMEOUT_MS,
+ CDTIME_T_TO_MS(plugin_get_interval()));
+ }
+#endif
+
+ return (0);
+} /* void init */
+
+static void submit (char *type, char *inst, long long value)
+{
+ value_t values[1];
+ value_list_t vl = VALUE_LIST_INIT;
+
+ if (strcmp (type, "nginx_connections") == 0)
+ values[0].gauge = value;
+ else if (strcmp (type, "nginx_requests") == 0)
+ values[0].derive = value;
+ else if (strcmp (type, "connections") == 0)
+ values[0].derive = value;
+ else
+ return;
+
+ vl.values = values;
+ vl.values_len = 1;
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "nginx", sizeof (vl.plugin));
+ sstrncpy (vl.plugin_instance, "", sizeof (vl.plugin_instance));
+ sstrncpy (vl.type, type, sizeof (vl.type));
+
+ if (inst != NULL)
+ sstrncpy (vl.type_instance, inst, sizeof (vl.type_instance));
+
+ plugin_dispatch_values (&vl);
+} /* void submit */
+
+static int nginx_read (void)
+{
+ int i;
+
+ char *ptr;
+ char *lines[16];
+ int lines_num = 0;
+ char *saveptr;
+
+ char *fields[16];
+ int fields_num;
+
+ if (curl == NULL)
+ return (-1);
+ if (url == NULL)
+ return (-1);
+
+ nginx_buffer_len = 0;
+ if (curl_easy_perform (curl) != CURLE_OK)
+ {
+ WARNING ("nginx plugin: curl_easy_perform failed: %s", nginx_curl_error);
+ return (-1);
+ }
+
+ ptr = nginx_buffer;
+ saveptr = NULL;
+ while ((lines[lines_num] = strtok_r (ptr, "\n\r", &saveptr)) != NULL)
+ {
+ ptr = NULL;
+ lines_num++;
+
+ if (lines_num >= 16)
+ break;
+ }
+
+ /*
+ * Active connections: 291
+ * server accepts handled requests
+ * 16630948 16630948 31070465
+ * Reading: 6 Writing: 179 Waiting: 106
+ */
+ for (i = 0; i < lines_num; i++)
+ {
+ fields_num = strsplit (lines[i], fields,
+ (sizeof (fields) / sizeof (fields[0])));
+
+ if (fields_num == 3)
+ {
+ if ((strcmp (fields[0], "Active") == 0)
+ && (strcmp (fields[1], "connections:") == 0))
+ {
+ submit ("nginx_connections", "active", atoll (fields[2]));
+ }
+ else if ((atoll (fields[0]) != 0)
+ && (atoll (fields[1]) != 0)
+ && (atoll (fields[2]) != 0))
+ {
+ submit ("connections", "accepted", atoll (fields[0]));
+ submit ("connections", "handled", atoll (fields[1]));
+ submit ("nginx_requests", NULL, atoll (fields[2]));
+ }
+ }
+ else if (fields_num == 6)
+ {
+ if ((strcmp (fields[0], "Reading:") == 0)
+ && (strcmp (fields[2], "Writing:") == 0)
+ && (strcmp (fields[4], "Waiting:") == 0))
+ {
+ submit ("nginx_connections", "reading", atoll (fields[1]));
+ submit ("nginx_connections", "writing", atoll (fields[3]));
+ submit ("nginx_connections", "waiting", atoll (fields[5]));
+ }
+ }
+ }
+
+ nginx_buffer_len = 0;
+
+ return (0);
+} /* int nginx_read */
+
+void module_register (void)
+{
+ plugin_register_config ("nginx", config, config_keys, config_keys_num);
+ plugin_register_init ("nginx", init);
+ plugin_register_read ("nginx", nginx_read);
+} /* void module_register */
+
+/*
+ * vim: set shiftwidth=2 softtabstop=2 tabstop=8 :
+ */