Code

Revert "Merge tag 'upstream/5.5.0'"
[pkg-collectd.git] / src / apache.c
diff --git a/src/apache.c b/src/apache.c
deleted file mode 100644 (file)
index 0c6318e..0000000
+++ /dev/null
@@ -1,623 +0,0 @@
-/**
- * collectd - src/apache.c
- * Copyright (C) 2006-2010  Florian octo Forster
- * Copyright (C) 2007       Florent EppO Monbillard
- * Copyright (C) 2009       Amit Gupta
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; only version 2 of the License is applicable.
- *
- * 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
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
- *
- * Authors:
- *   Florian octo Forster <octo at collectd.org>
- *   Florent EppO Monbillard <eppo at darox.net>
- *   - connections/lighttpd extension
- *   Amit Gupta <amit.gupta221 at gmail.com>
- **/
-
-#include "collectd.h"
-#include "common.h"
-#include "plugin.h"
-#include "configfile.h"
-
-#include <curl/curl.h>
-
-enum server_enum
-{
-       APACHE = 0,
-       LIGHTTPD
-};
-
-struct apache_s
-{
-       int server_type;
-       char *name;
-       char *host;
-       char *url;
-       char *user;
-       char *pass;
-       _Bool verify_peer;
-       _Bool verify_host;
-       char *cacert;
-       char *ssl_ciphers;
-       char *server; /* user specific server type */
-       char *apache_buffer;
-       char apache_curl_error[CURL_ERROR_SIZE];
-       size_t apache_buffer_size;
-       size_t apache_buffer_fill;
-       int timeout;
-       CURL *curl;
-}; /* apache_s */
-
-typedef struct apache_s apache_t;
-
-/* TODO: Remove this prototype */
-static int apache_read_host (user_data_t *user_data);
-
-static void apache_free (apache_t *st)
-{
-       if (st == NULL)
-               return;
-
-       sfree (st->name);
-       sfree (st->host);
-       sfree (st->url);
-       sfree (st->user);
-       sfree (st->pass);
-       sfree (st->cacert);
-       sfree (st->ssl_ciphers);
-       sfree (st->server);
-       sfree (st->apache_buffer);
-       if (st->curl) {
-               curl_easy_cleanup(st->curl);
-               st->curl = NULL;
-       }
-} /* apache_free */
-
-static size_t apache_curl_callback (void *buf, size_t size, size_t nmemb,
-               void *user_data)
-{
-       size_t len = size * nmemb;
-       apache_t *st;
-
-       st = user_data;
-       if (st == NULL)
-       {
-               ERROR ("apache plugin: apache_curl_callback: "
-                               "user_data pointer is NULL.");
-               return (0);
-       }
-
-       if (len <= 0)
-               return (len);
-
-       if ((st->apache_buffer_fill + len) >= st->apache_buffer_size)
-       {
-               char *temp;
-
-               temp = (char *) realloc (st->apache_buffer,
-                               st->apache_buffer_fill + len + 1);
-               if (temp == NULL)
-               {
-                       ERROR ("apache plugin: realloc failed.");
-                       return (0);
-               }
-               st->apache_buffer = temp;
-               st->apache_buffer_size = st->apache_buffer_fill + len + 1;
-       }
-
-       memcpy (st->apache_buffer + st->apache_buffer_fill, (char *) buf, len);
-       st->apache_buffer_fill += len;
-       st->apache_buffer[st->apache_buffer_fill] = 0;
-
-       return (len);
-} /* int apache_curl_callback */
-
-static size_t apache_header_callback (void *buf, size_t size, size_t nmemb,
-               void *user_data)
-{
-       size_t len = size * nmemb;
-       apache_t *st;
-
-       st = user_data;
-       if (st == NULL)
-       {
-               ERROR ("apache plugin: apache_header_callback: "
-                               "user_data pointer is NULL.");
-               return (0);
-       }
-
-       if (len <= 0)
-               return (len);
-
-       /* look for the Server header */
-       if (strncasecmp (buf, "Server: ", strlen ("Server: ")) != 0)
-               return (len);
-
-       if (strstr (buf, "Apache") != NULL)
-               st->server_type = APACHE;
-       else if (strstr (buf, "lighttpd") != NULL)
-               st->server_type = LIGHTTPD;
-       else if (strstr (buf, "IBM_HTTP_Server") != NULL)
-               st->server_type = APACHE;
-       else
-       {
-               const char *hdr = buf;
-
-               hdr += strlen ("Server: ");
-               NOTICE ("apache plugin: Unknown server software: %s", hdr);
-       }
-
-       return (len);
-} /* apache_header_callback */
-
-/* Configuration handling functiions
- * <Plugin apache>
- *   <Instance "instance_name">
- *     URL ...
- *   </Instance>
- *   URL ...
- * </Plugin>
- */
-static int config_add (oconfig_item_t *ci)
-{
-       apache_t *st;
-       int i;
-       int status;
-
-       st = malloc (sizeof (*st));
-       if (st == NULL)
-       {
-               ERROR ("apache plugin: malloc failed.");
-               return (-1);
-       }
-       memset (st, 0, sizeof (*st));
-
-       st->timeout = -1;
-
-       status = cf_util_get_string (ci, &st->name);
-       if (status != 0)
-       {
-               sfree (st);
-               return (status);
-       }
-       assert (st->name != NULL);
-
-       for (i = 0; i < ci->children_num; i++)
-       {
-               oconfig_item_t *child = ci->children + i;
-
-               if (strcasecmp ("URL", child->key) == 0)
-                       status = cf_util_get_string (child, &st->url);
-               else if (strcasecmp ("Host", child->key) == 0)
-                       status = cf_util_get_string (child, &st->host);
-               else if (strcasecmp ("User", child->key) == 0)
-                       status = cf_util_get_string (child, &st->user);
-               else if (strcasecmp ("Password", child->key) == 0)
-                       status = cf_util_get_string (child, &st->pass);
-               else if (strcasecmp ("VerifyPeer", child->key) == 0)
-                       status = cf_util_get_boolean (child, &st->verify_peer);
-               else if (strcasecmp ("VerifyHost", child->key) == 0)
-                       status = cf_util_get_boolean (child, &st->verify_host);
-               else if (strcasecmp ("CACert", child->key) == 0)
-                       status = cf_util_get_string (child, &st->cacert);
-               else if (strcasecmp ("SSLCiphers", child->key) == 0)
-                       status = cf_util_get_string (child, &st->ssl_ciphers);
-               else if (strcasecmp ("Server", child->key) == 0)
-                       status = cf_util_get_string (child, &st->server);
-               else if (strcasecmp ("Timeout", child->key) == 0)
-                       status = cf_util_get_int (child, &st->timeout);
-               else
-               {
-                       WARNING ("apache plugin: Option `%s' not allowed here.",
-                                       child->key);
-                       status = -1;
-               }
-
-               if (status != 0)
-                       break;
-       }
-
-       /* Check if struct is complete.. */
-       if ((status == 0) && (st->url == NULL))
-       {
-               ERROR ("apache plugin: Instance `%s': "
-                               "No URL has been configured.",
-                               st->name);
-               status = -1;
-       }
-
-       if (status == 0)
-       {
-               user_data_t ud;
-               char callback_name[3*DATA_MAX_NAME_LEN];
-
-               memset (&ud, 0, sizeof (ud));
-               ud.data = st;
-               ud.free_func = (void *) apache_free;
-
-               memset (callback_name, 0, sizeof (callback_name));
-               ssnprintf (callback_name, sizeof (callback_name),
-                               "apache/%s/%s",
-                               (st->host != NULL) ? st->host : hostname_g,
-                               (st->name != NULL) ? st->name : "default"),
-
-               status = plugin_register_complex_read (/* group = */ NULL,
-                               /* name      = */ callback_name,
-                               /* callback  = */ apache_read_host,
-                               /* interval  = */ NULL,
-                               /* user_data = */ &ud);
-       }
-
-       if (status != 0)
-       {
-               apache_free (st);
-               return (-1);
-       }
-
-       return (0);
-} /* int config_add */
-
-static int config (oconfig_item_t *ci)
-{
-       int status = 0;
-       int i;
-
-       for (i = 0; i < ci->children_num; i++)
-       {
-               oconfig_item_t *child = ci->children + i;
-
-               if (strcasecmp ("Instance", child->key) == 0)
-                       config_add (child);
-               else
-                       WARNING ("apache plugin: The configuration option "
-                                       "\"%s\" is not allowed here. Did you "
-                                       "forget to add an <Instance /> block "
-                                       "around the configuration?",
-                                       child->key);
-       } /* for (ci->children) */
-
-       return (status);
-} /* int config */
-
-/* initialize curl for each host */
-static int init_host (apache_t *st) /* {{{ */
-{
-       assert (st->url != NULL);
-       /* (Assured by `config_add') */
-
-       if (st->curl != NULL)
-       {
-               curl_easy_cleanup (st->curl);
-               st->curl = NULL;
-       }
-
-       if ((st->curl = curl_easy_init ()) == NULL)
-       {
-               ERROR ("apache plugin: init_host: `curl_easy_init' failed.");
-               return (-1);
-       }
-
-       curl_easy_setopt (st->curl, CURLOPT_NOSIGNAL, 1L);
-       curl_easy_setopt (st->curl, CURLOPT_WRITEFUNCTION, apache_curl_callback);
-       curl_easy_setopt (st->curl, CURLOPT_WRITEDATA, st);
-
-       /* not set as yet if the user specified string doesn't match apache or
-        * lighttpd, then ignore it. Headers will be parsed to find out the
-        * server type */
-       st->server_type = -1;
-
-       if (st->server != NULL)
-       {
-               if (strcasecmp(st->server, "apache") == 0)
-                       st->server_type = APACHE;
-               else if (strcasecmp(st->server, "lighttpd") == 0)
-                       st->server_type = LIGHTTPD;
-               else if (strcasecmp(st->server, "ibm_http_server") == 0)
-                       st->server_type = APACHE;
-               else
-                       WARNING ("apache plugin: Unknown `Server' setting: %s",
-                                       st->server);
-       }
-
-       /* if not found register a header callback to determine the server_type */
-       if (st->server_type == -1)
-       {
-               curl_easy_setopt (st->curl, CURLOPT_HEADERFUNCTION, apache_header_callback);
-               curl_easy_setopt (st->curl, CURLOPT_WRITEHEADER, st);
-       }
-
-       curl_easy_setopt (st->curl, CURLOPT_USERAGENT, COLLECTD_USERAGENT);
-       curl_easy_setopt (st->curl, CURLOPT_ERRORBUFFER, st->apache_curl_error);
-
-       if (st->user != NULL)
-       {
-#ifdef HAVE_CURLOPT_USERNAME
-               curl_easy_setopt (st->curl, CURLOPT_USERNAME, st->user);
-               curl_easy_setopt (st->curl, CURLOPT_PASSWORD,
-                               (st->pass == NULL) ? "" : st->pass);
-#else
-               static char credentials[1024];
-               int status;
-
-               status = ssnprintf (credentials, sizeof (credentials), "%s:%s",
-                               st->user, (st->pass == NULL) ? "" : st->pass);
-               if ((status < 0) || ((size_t) status >= sizeof (credentials)))
-               {
-                       ERROR ("apache plugin: init_host: Returning an error "
-                                       "because the credentials have been "
-                                       "truncated.");
-                       curl_easy_cleanup (st->curl);
-                       st->curl = NULL;
-                       return (-1);
-               }
-
-               curl_easy_setopt (st->curl, CURLOPT_USERPWD, credentials);
-#endif
-       }
-
-       curl_easy_setopt (st->curl, CURLOPT_URL, st->url);
-       curl_easy_setopt (st->curl, CURLOPT_FOLLOWLOCATION, 1L);
-       curl_easy_setopt (st->curl, CURLOPT_MAXREDIRS, 50L);
-
-       curl_easy_setopt (st->curl, CURLOPT_SSL_VERIFYPEER,
-                       (long) st->verify_peer);
-       curl_easy_setopt (st->curl, CURLOPT_SSL_VERIFYHOST,
-                       st->verify_host ? 2L : 0L);
-       if (st->cacert != NULL)
-               curl_easy_setopt (st->curl, CURLOPT_CAINFO, st->cacert);
-       if (st->ssl_ciphers != NULL)
-               curl_easy_setopt (st->curl, CURLOPT_SSL_CIPHER_LIST,st->ssl_ciphers);
-
-#ifdef HAVE_CURLOPT_TIMEOUT_MS
-       if (st->timeout >= 0)
-               curl_easy_setopt (st->curl, CURLOPT_TIMEOUT_MS, (long) st->timeout);
-       else
-               curl_easy_setopt (st->curl, CURLOPT_TIMEOUT_MS,
-                               CDTIME_T_TO_MS(plugin_get_interval()));
-#endif
-
-       return (0);
-} /* }}} int init_host */
-
-static void submit_value (const char *type, const char *type_instance,
-               value_t value, apache_t *st)
-{
-       value_list_t vl = VALUE_LIST_INIT;
-
-       vl.values = &value;
-       vl.values_len = 1;
-
-       sstrncpy (vl.host, (st->host != NULL) ? st->host : hostname_g,
-                       sizeof (vl.host));
-
-       sstrncpy (vl.plugin, "apache", sizeof (vl.plugin));
-       if (st->name != NULL)
-               sstrncpy (vl.plugin_instance, st->name,
-                               sizeof (vl.plugin_instance));
-
-       sstrncpy (vl.type, type, sizeof (vl.type));
-       if (type_instance != NULL)
-               sstrncpy (vl.type_instance, type_instance,
-                               sizeof (vl.type_instance));
-
-       plugin_dispatch_values (&vl);
-} /* void submit_value */
-
-static void submit_derive (const char *type, const char *type_instance,
-               derive_t c, apache_t *st)
-{
-       value_t v;
-       v.derive = c;
-       submit_value (type, type_instance, v, st);
-} /* void submit_derive */
-
-static void submit_gauge (const char *type, const char *type_instance,
-               gauge_t g, apache_t *st)
-{
-       value_t v;
-       v.gauge = g;
-       submit_value (type, type_instance, v, st);
-} /* void submit_gauge */
-
-static void submit_scoreboard (char *buf, apache_t *st)
-{
-       /*
-        * Scoreboard Key:
-        * "_" Waiting for Connection, "S" Starting up,
-        * "R" Reading Request for apache and read-POST for lighttpd,
-        * "W" Sending Reply, "K" Keepalive (read), "D" DNS Lookup,
-        * "C" Closing connection, "L" Logging, "G" Gracefully finishing,
-        * "I" Idle cleanup of worker, "." Open slot with no current process
-        * Lighttpd specific legends -
-        * "E" hard error, "." connect, "h" handle-request,
-        * "q" request-start, "Q" request-end, "s" response-start
-        * "S" response-end, "r" read
-        */
-       long long open      = 0LL;
-       long long waiting   = 0LL;
-       long long starting  = 0LL;
-       long long reading   = 0LL;
-       long long sending   = 0LL;
-       long long keepalive = 0LL;
-       long long dnslookup = 0LL;
-       long long closing   = 0LL;
-       long long logging   = 0LL;
-       long long finishing = 0LL;
-       long long idle_cleanup = 0LL;
-
-       /* lighttpd specific */
-       long long hard_error     = 0LL;
-       long long lighttpd_read  = 0LL;
-       long long handle_request = 0LL;
-       long long request_start  = 0LL;
-       long long request_end    = 0LL;
-       long long response_start = 0LL;
-       long long response_end   = 0LL;
-
-       int i;
-       for (i = 0; buf[i] != '\0'; i++)
-       {
-               if (buf[i] == '.') open++;
-               else if (buf[i] == '_') waiting++;
-               else if (buf[i] == 'S') starting++;
-               else if (buf[i] == 'R') reading++;
-               else if (buf[i] == 'W') sending++;
-               else if (buf[i] == 'K') keepalive++;
-               else if (buf[i] == 'D') dnslookup++;
-               else if (buf[i] == 'C') closing++;
-               else if (buf[i] == 'L') logging++;
-               else if (buf[i] == 'G') finishing++;
-               else if (buf[i] == 'I') idle_cleanup++;
-               else if (buf[i] == 'r') lighttpd_read++;
-               else if (buf[i] == 'h') handle_request++;
-               else if (buf[i] == 'E') hard_error++;
-               else if (buf[i] == 'q') request_start++;
-               else if (buf[i] == 'Q') request_end++;
-               else if (buf[i] == 's') response_start++;
-               else if (buf[i] == 'S') response_end++;
-       }
-
-       if (st->server_type == APACHE)
-       {
-               submit_gauge ("apache_scoreboard", "open"     , open, st);
-               submit_gauge ("apache_scoreboard", "waiting"  , waiting, st);
-               submit_gauge ("apache_scoreboard", "starting" , starting, st);
-               submit_gauge ("apache_scoreboard", "reading"  , reading, st);
-               submit_gauge ("apache_scoreboard", "sending"  , sending, st);
-               submit_gauge ("apache_scoreboard", "keepalive", keepalive, st);
-               submit_gauge ("apache_scoreboard", "dnslookup", dnslookup, st);
-               submit_gauge ("apache_scoreboard", "closing"  , closing, st);
-               submit_gauge ("apache_scoreboard", "logging"  , logging, st);
-               submit_gauge ("apache_scoreboard", "finishing", finishing, st);
-               submit_gauge ("apache_scoreboard", "idle_cleanup", idle_cleanup, st);
-       }
-       else
-       {
-               submit_gauge ("apache_scoreboard", "connect"       , open, st);
-               submit_gauge ("apache_scoreboard", "close"         , closing, st);
-               submit_gauge ("apache_scoreboard", "hard_error"    , hard_error, st);
-               submit_gauge ("apache_scoreboard", "read"          , lighttpd_read, st);
-               submit_gauge ("apache_scoreboard", "read_post"     , reading, st);
-               submit_gauge ("apache_scoreboard", "write"         , sending, st);
-               submit_gauge ("apache_scoreboard", "handle_request", handle_request, st);
-               submit_gauge ("apache_scoreboard", "request_start" , request_start, st);
-               submit_gauge ("apache_scoreboard", "request_end"   , request_end, st);
-               submit_gauge ("apache_scoreboard", "response_start", response_start, st);
-               submit_gauge ("apache_scoreboard", "response_end"  , response_end, st);
-       }
-}
-
-static int apache_read_host (user_data_t *user_data) /* {{{ */
-{
-       int i;
-
-       char *ptr;
-       char *saveptr;
-       char *lines[16];
-       int   lines_num = 0;
-
-       char *fields[4];
-       int   fields_num;
-
-       apache_t *st;
-
-       st = user_data->data;
-
-       assert (st->url != NULL);
-       /* (Assured by `config_add') */
-
-       if (st->curl == NULL)
-       {
-               int status;
-
-               status = init_host (st);
-               if (status != 0)
-                       return (-1);
-       }
-       assert (st->curl != NULL);
-
-       st->apache_buffer_fill = 0;
-       if (curl_easy_perform (st->curl) != CURLE_OK)
-       {
-               ERROR ("apache: curl_easy_perform failed: %s",
-                               st->apache_curl_error);
-               return (-1);
-       }
-
-       /* fallback - server_type to apache if not set at this time */
-       if (st->server_type == -1)
-       {
-               WARNING ("apache plugin: Unable to determine server software "
-                               "automatically. Will assume Apache.");
-               st->server_type = APACHE;
-       }
-
-       ptr = st->apache_buffer;
-       saveptr = NULL;
-       while ((lines[lines_num] = strtok_r (ptr, "\n\r", &saveptr)) != NULL)
-       {
-               ptr = NULL;
-               lines_num++;
-
-               if (lines_num >= 16)
-                       break;
-       }
-
-       for (i = 0; i < lines_num; i++)
-       {
-               fields_num = strsplit (lines[i], fields, 4);
-
-               if (fields_num == 3)
-               {
-                       if ((strcmp (fields[0], "Total") == 0)
-                                       && (strcmp (fields[1], "Accesses:") == 0))
-                               submit_derive ("apache_requests", "",
-                                               atoll (fields[2]), st);
-                       else if ((strcmp (fields[0], "Total") == 0)
-                                       && (strcmp (fields[1], "kBytes:") == 0))
-                               submit_derive ("apache_bytes", "",
-                                               1024LL * atoll (fields[2]), st);
-               }
-               else if (fields_num == 2)
-               {
-                       if (strcmp (fields[0], "Scoreboard:") == 0)
-                               submit_scoreboard (fields[1], st);
-                       else if ((strcmp (fields[0], "BusyServers:") == 0) /* Apache 1.* */
-                                       || (strcmp (fields[0], "BusyWorkers:") == 0) /* Apache 2.* */)
-                               submit_gauge ("apache_connections", NULL, atol (fields[1]), st);
-                       else if ((strcmp (fields[0], "IdleServers:") == 0) /* Apache 1.x */
-                                       || (strcmp (fields[0], "IdleWorkers:") == 0) /* Apache 2.x */)
-                               submit_gauge ("apache_idle_workers", NULL, atol (fields[1]), st);
-               }
-       }
-
-       st->apache_buffer_fill = 0;
-
-       return (0);
-} /* }}} int apache_read_host */
-
-static int apache_init (void) /* {{{ */
-{
-       /* Call this while collectd is still single-threaded to avoid
-        * initialization issues in libgcrypt. */
-       curl_global_init (CURL_GLOBAL_SSL);
-       return (0);
-} /* }}} int apache_init */
-
-void module_register (void)
-{
-       plugin_register_complex_config ("apache", config);
-       plugin_register_init ("apache", apache_init);
-} /* void module_register */
-
-/* vim: set sw=8 noet fdm=marker : */