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1/*****************************************************************************
2*
3* Monitoring check_curl plugin
4*
5* License: GPL
6* Copyright (c) 1999-2018 Monitoring Plugins Development Team
7*
8* Description:
9*
10* This file contains the check_curl plugin
11*
12* This plugin tests the HTTP service on the specified host. It can test
13* normal (http) and secure (https) servers, follow redirects, search for
14* strings and regular expressions, check connection times, and report on
15* certificate expiration times.
16*
17* This plugin uses functions from the curl library, see
18* http://curl.haxx.se
19*
20* This program is free software: you can redistribute it and/or modify
21* it under the terms of the GNU General Public License as published by
22* the Free Software Foundation, either version 3 of the License, or
23* (at your option) any later version.
24*
25* This program is distributed in the hope that it will be useful,
26* but WITHOUT ANY WARRANTY; without even the implied warranty of
27* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28* GNU General Public License for more details.
29*
30* You should have received a copy of the GNU General Public License
31* along with this program. If not, see <http://www.gnu.org/licenses/>.
32*
33*
34*****************************************************************************/
35const char *progname = "check_curl";
36
37const char *copyright = "2006-2018";
38const char *email = "devel@monitoring-plugins.org";
39
40#include <ctype.h>
41
42#include "common.h"
43#include "utils.h"
44
45#ifndef LIBCURL_PROTOCOL_HTTP
46#error libcurl compiled without HTTP support, compiling check_curl plugin does not makes a lot of sense
47#endif
48
49#include "curl/curl.h"
50#include "curl/easy.h"
51
52#include "picohttpparser.h"
53
54#include "uriparser/Uri.h"
55
56#include <arpa/inet.h>
57
58#define MAKE_LIBCURL_VERSION(major, minor, patch) ((major)*0x10000 + (minor)*0x100 + (patch))
59
60#define DEFAULT_BUFFER_SIZE 2048
61#define DEFAULT_SERVER_URL "/"
62#define HTTP_EXPECT "HTTP/1."
63#define DEFAULT_MAX_REDIRS 15
64#define INET_ADDR_MAX_SIZE INET6_ADDRSTRLEN
65enum {
66 MAX_IPV4_HOSTLENGTH = 255,
67 HTTP_PORT = 80,
68 HTTPS_PORT = 443,
69 MAX_PORT = 65535
70};
71
72enum {
73 STICKY_NONE = 0,
74 STICKY_HOST = 1,
75 STICKY_PORT = 2
76};
77
78enum {
79 FOLLOW_HTTP_CURL = 0,
80 FOLLOW_LIBCURL = 1
81};
82
83/* for buffers for header and body */
84typedef struct {
85 char *buf;
86 size_t buflen;
87 size_t bufsize;
88} curlhelp_write_curlbuf;
89
90/* for buffering the data sent in PUT */
91typedef struct {
92 char *buf;
93 size_t buflen;
94 off_t pos;
95} curlhelp_read_curlbuf;
96
97/* for parsing the HTTP status line */
98typedef struct {
99 int http_major; /* major version of the protocol, always 1 (HTTP/0.9
100 * never reached the big internet most likely) */
101 int http_minor; /* minor version of the protocol, usually 0 or 1 */
102 int http_code; /* HTTP return code as in RFC 2145 */
103 int http_subcode; /* Microsoft IIS extension, HTTP subcodes, see
104 * http://support.microsoft.com/kb/318380/en-us */
105 const char *msg; /* the human readable message */
106 char *first_line; /* a copy of the first line */
107} curlhelp_statusline;
108
109/* to know the underlying SSL library used by libcurl */
110typedef enum curlhelp_ssl_library {
111 CURLHELP_SSL_LIBRARY_UNKNOWN,
112 CURLHELP_SSL_LIBRARY_OPENSSL,
113 CURLHELP_SSL_LIBRARY_LIBRESSL,
114 CURLHELP_SSL_LIBRARY_GNUTLS,
115 CURLHELP_SSL_LIBRARY_NSS
116} curlhelp_ssl_library;
117
118enum {
119 REGS = 2,
120 MAX_RE_SIZE = 256
121};
122#include "regex.h"
123regex_t preg;
124regmatch_t pmatch[REGS];
125char regexp[MAX_RE_SIZE];
126int cflags = REG_NOSUB | REG_EXTENDED | REG_NEWLINE;
127int errcode;
128int invert_regex = 0;
129
130char *server_address;
131char *host_name;
132char *server_url = 0;
133char server_ip[DEFAULT_BUFFER_SIZE];
134struct curl_slist *server_ips = NULL;
135int specify_port = FALSE;
136unsigned short server_port = HTTP_PORT;
137unsigned short virtual_port = 0;
138int host_name_length;
139char output_header_search[30] = "";
140char output_string_search[30] = "";
141char *warning_thresholds = NULL;
142char *critical_thresholds = NULL;
143int days_till_exp_warn, days_till_exp_crit;
144thresholds *thlds;
145char user_agent[DEFAULT_BUFFER_SIZE];
146int verbose = 0;
147int show_extended_perfdata = FALSE;
148int min_page_len = 0;
149int max_page_len = 0;
150int redir_depth = 0;
151int max_depth = DEFAULT_MAX_REDIRS;
152char *http_method = NULL;
153char *http_post_data = NULL;
154char *http_content_type = NULL;
155CURL *curl;
156struct curl_slist *header_list = NULL;
157curlhelp_write_curlbuf body_buf;
158curlhelp_write_curlbuf header_buf;
159curlhelp_statusline status_line;
160curlhelp_read_curlbuf put_buf;
161char http_header[DEFAULT_BUFFER_SIZE];
162long code;
163long socket_timeout = DEFAULT_SOCKET_TIMEOUT;
164double total_time;
165double time_connect;
166double time_appconnect;
167double time_headers;
168double time_firstbyte;
169char errbuf[CURL_ERROR_SIZE+1];
170CURLcode res;
171char url[DEFAULT_BUFFER_SIZE];
172char msg[DEFAULT_BUFFER_SIZE];
173char perfstring[DEFAULT_BUFFER_SIZE];
174char header_expect[MAX_INPUT_BUFFER] = "";
175char string_expect[MAX_INPUT_BUFFER] = "";
176char server_expect[MAX_INPUT_BUFFER] = HTTP_EXPECT;
177int server_expect_yn = 0;
178char user_auth[MAX_INPUT_BUFFER] = "";
179char proxy_auth[MAX_INPUT_BUFFER] = "";
180char **http_opt_headers;
181int http_opt_headers_count = 0;
182int display_html = FALSE;
183int onredirect = STATE_OK;
184int followmethod = FOLLOW_HTTP_CURL;
185int followsticky = STICKY_NONE;
186int use_ssl = FALSE;
187int use_sni = TRUE;
188int check_cert = FALSE;
189typedef union {
190 struct curl_slist* to_info;
191 struct curl_certinfo* to_certinfo;
192} cert_ptr_union;
193cert_ptr_union cert_ptr;
194int ssl_version = CURL_SSLVERSION_DEFAULT;
195char *client_cert = NULL;
196char *client_privkey = NULL;
197char *ca_cert = NULL;
198int is_openssl_callback = FALSE;
199#if defined(HAVE_SSL) && defined(USE_OPENSSL)
200X509 *cert = NULL;
201#endif /* defined(HAVE_SSL) && defined(USE_OPENSSL) */
202int no_body = FALSE;
203int maximum_age = -1;
204int address_family = AF_UNSPEC;
205curlhelp_ssl_library ssl_library = CURLHELP_SSL_LIBRARY_UNKNOWN;
206
207int process_arguments (int, char**);
208void handle_curl_option_return_code (CURLcode res, const char* option);
209int check_http (void);
210void redir (curlhelp_write_curlbuf*);
211char *perfd_time (double microsec);
212char *perfd_time_connect (double microsec);
213char *perfd_time_ssl (double microsec);
214char *perfd_time_firstbyte (double microsec);
215char *perfd_time_headers (double microsec);
216char *perfd_time_transfer (double microsec);
217char *perfd_size (int page_len);
218void print_help (void);
219void print_usage (void);
220void print_curl_version (void);
221int curlhelp_initwritebuffer (curlhelp_write_curlbuf*);
222int curlhelp_buffer_write_callback (void*, size_t , size_t , void*);
223void curlhelp_freewritebuffer (curlhelp_write_curlbuf*);
224int curlhelp_initreadbuffer (curlhelp_read_curlbuf *, const char *, size_t);
225int curlhelp_buffer_read_callback (void *, size_t , size_t , void *);
226void curlhelp_freereadbuffer (curlhelp_read_curlbuf *);
227curlhelp_ssl_library curlhelp_get_ssl_library (CURL*);
228const char* curlhelp_get_ssl_library_string (curlhelp_ssl_library);
229int net_noopenssl_check_certificate (cert_ptr_union*, int, int);
230
231int curlhelp_parse_statusline (const char*, curlhelp_statusline *);
232void curlhelp_free_statusline (curlhelp_statusline *);
233char *get_header_value (const struct phr_header* headers, const size_t nof_headers, const char* header);
234int check_document_dates (const curlhelp_write_curlbuf *, char (*msg)[DEFAULT_BUFFER_SIZE]);
235int get_content_length (const curlhelp_write_curlbuf* header_buf, const curlhelp_write_curlbuf* body_buf);
236
237#if defined(HAVE_SSL) && defined(USE_OPENSSL)
238int np_net_ssl_check_certificate(X509 *certificate, int days_till_exp_warn, int days_till_exp_crit);
239#endif /* defined(HAVE_SSL) && defined(USE_OPENSSL) */
240
241void remove_newlines (char *);
242void test_file (char *);
243
244int
245main (int argc, char **argv)
246{
247 int result = STATE_UNKNOWN;
248
249 setlocale (LC_ALL, "");
250 bindtextdomain (PACKAGE, LOCALEDIR);
251 textdomain (PACKAGE);
252
253 /* Parse extra opts if any */
254 argv = np_extra_opts (&argc, argv, progname);
255
256 /* set defaults */
257 snprintf( user_agent, DEFAULT_BUFFER_SIZE, "%s/v%s (monitoring-plugins %s, %s)",
258 progname, NP_VERSION, VERSION, curl_version());
259
260 /* parse arguments */
261 if (process_arguments (argc, argv) == ERROR)
262 usage4 (_("Could not parse arguments"));
263
264 if (display_html == TRUE)
265 printf ("<A HREF=\"%s://%s:%d%s\" target=\"_blank\">",
266 use_ssl ? "https" : "http",
267 host_name ? host_name : server_address,
268 virtual_port ? virtual_port : server_port,
269 server_url);
270
271 result = check_http ();
272 return result;
273}
274
275#ifdef HAVE_SSL
276#ifdef USE_OPENSSL
277
278int verify_callback(int preverify_ok, X509_STORE_CTX *x509_ctx)
279{
280 /* TODO: we get all certificates of the chain, so which ones
281 * should we test?
282 * TODO: is the last certificate always the server certificate?
283 */
284 cert = X509_STORE_CTX_get_current_cert(x509_ctx);
285 return 1;
286}
287
288CURLcode sslctxfun(CURL *curl, SSL_CTX *sslctx, void *parm)
289{
290 SSL_CTX_set_verify(sslctx, SSL_VERIFY_PEER, verify_callback);
291
292 return CURLE_OK;
293}
294
295#endif /* USE_OPENSSL */
296#endif /* HAVE_SSL */
297
298/* Checks if the server 'reply' is one of the expected 'statuscodes' */
299static int
300expected_statuscode (const char *reply, const char *statuscodes)
301{
302 char *expected, *code;
303 int result = 0;
304
305 if ((expected = strdup (statuscodes)) == NULL)
306 die (STATE_UNKNOWN, _("HTTP UNKNOWN - Memory allocation error\n"));
307
308 for (code = strtok (expected, ","); code != NULL; code = strtok (NULL, ","))
309 if (strstr (reply, code) != NULL) {
310 result = 1;
311 break;
312 }
313
314 free (expected);
315 return result;
316}
317
318void
319handle_curl_option_return_code (CURLcode res, const char* option)
320{
321 if (res != CURLE_OK) {
322 snprintf (msg, DEFAULT_BUFFER_SIZE, _("Error while setting cURL option '%s': cURL returned %d - %s"),
323 option, res, curl_easy_strerror(res));
324 die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
325 }
326}
327
328int
329check_http (void)
330{
331 int result = STATE_OK;
332 int page_len = 0;
333 int i;
334 char *force_host_header = NULL;
335
336 /* initialize curl */
337 if (curl_global_init (CURL_GLOBAL_DEFAULT) != CURLE_OK)
338 die (STATE_UNKNOWN, "HTTP UNKNOWN - curl_global_init failed\n");
339
340 if ((curl = curl_easy_init()) == NULL)
341 die (STATE_UNKNOWN, "HTTP UNKNOWN - curl_easy_init failed\n");
342
343 if (verbose >= 1)
344 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_VERBOSE, TRUE), "CURLOPT_VERBOSE");
345
346 /* print everything on stdout like check_http would do */
347 handle_curl_option_return_code (curl_easy_setopt(curl, CURLOPT_STDERR, stdout), "CURLOPT_STDERR");
348
349 /* initialize buffer for body of the answer */
350 if (curlhelp_initwritebuffer(&body_buf) < 0)
351 die (STATE_UNKNOWN, "HTTP CRITICAL - out of memory allocating buffer for body\n");
352 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_WRITEFUNCTION, (curl_write_callback)curlhelp_buffer_write_callback), "CURLOPT_WRITEFUNCTION");
353 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_WRITEDATA, (void *)&body_buf), "CURLOPT_WRITEDATA");
354
355 /* initialize buffer for header of the answer */
356 if (curlhelp_initwritebuffer( &header_buf ) < 0)
357 die (STATE_UNKNOWN, "HTTP CRITICAL - out of memory allocating buffer for header\n" );
358 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_HEADERFUNCTION, (curl_write_callback)curlhelp_buffer_write_callback), "CURLOPT_HEADERFUNCTION");
359 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_WRITEHEADER, (void *)&header_buf), "CURLOPT_WRITEHEADER");
360
361 /* set the error buffer */
362 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_ERRORBUFFER, errbuf), "CURLOPT_ERRORBUFFER");
363
364 /* set timeouts */
365 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_CONNECTTIMEOUT, socket_timeout), "CURLOPT_CONNECTTIMEOUT");
366 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_TIMEOUT, socket_timeout), "CURLOPT_TIMEOUT");
367
368 /* compose URL: use the address we want to connect to, set Host: header later */
369 snprintf (url, DEFAULT_BUFFER_SIZE, "%s://%s:%d%s",
370 use_ssl ? "https" : "http",
371 use_ssl ? host_name : server_address,
372 server_port,
373 server_url
374 );
375
376 if (verbose>=1)
377 printf ("* curl CURLOPT_URL: %s\n", url);
378 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_URL, url), "CURLOPT_URL");
379
380 /* extract proxy information for legacy proxy https requests */
381 if (!strcmp(http_method, "CONNECT") || strstr(server_url, "http") == server_url) {
382 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_PROXY, server_address), "CURLOPT_PROXY");
383 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_PROXYPORT, (long)server_port), "CURLOPT_PROXYPORT");
384 if (verbose>=2)
385 printf ("* curl CURLOPT_PROXY: %s:%d\n", server_address, server_port);
386 http_method = "GET";
387 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_URL, server_url), "CURLOPT_URL");
388 }
389
390 /* set HTTP method */
391 if (http_method) {
392 if (!strcmp(http_method, "POST"))
393 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_POST, 1), "CURLOPT_POST");
394 else if (!strcmp(http_method, "PUT"))
395 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_UPLOAD, 1), "CURLOPT_UPLOAD");
396 else
397 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_CUSTOMREQUEST, http_method), "CURLOPT_CUSTOMREQUEST");
398 }
399
400 /* check if Host header is explicitly set in options */
401 if (http_opt_headers_count) {
402 for (i = 0; i < http_opt_headers_count ; i++) {
403 if (strncmp(http_opt_headers[i], "Host:", 5) == 0) {
404 force_host_header = http_opt_headers[i];
405 }
406 }
407 }
408
409 /* set hostname (virtual hosts), not needed if CURLOPT_CONNECT_TO is used, but left in anyway */
410 if(host_name != NULL && force_host_header == NULL) {
411 if((virtual_port != HTTP_PORT && !use_ssl) || (virtual_port != HTTPS_PORT && use_ssl)) {
412 snprintf(http_header, DEFAULT_BUFFER_SIZE, "Host: %s:%d", host_name, virtual_port);
413 } else {
414 snprintf(http_header, DEFAULT_BUFFER_SIZE, "Host: %s", host_name);
415 }
416 header_list = curl_slist_append (header_list, http_header);
417 }
418
419 /* always close connection, be nice to servers */
420 snprintf (http_header, DEFAULT_BUFFER_SIZE, "Connection: close");
421 header_list = curl_slist_append (header_list, http_header);
422
423 /* attach additional headers supplied by the user */
424 /* optionally send any other header tag */
425 if (http_opt_headers_count) {
426 for (i = 0; i < http_opt_headers_count ; i++) {
427 header_list = curl_slist_append (header_list, http_opt_headers[i]);
428 }
429 /* This cannot be free'd here because a redirection will then try to access this and segfault */
430 /* Covered in a testcase in tests/check_http.t */
431 /* free(http_opt_headers); */
432 }
433
434 /* set HTTP headers */
435 handle_curl_option_return_code (curl_easy_setopt( curl, CURLOPT_HTTPHEADER, header_list ), "CURLOPT_HTTPHEADER");
436
437#ifdef LIBCURL_FEATURE_SSL
438
439 /* set SSL version, warn about unsecure or unsupported versions */
440 if (use_ssl) {
441 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_SSLVERSION, ssl_version), "CURLOPT_SSLVERSION");
442 }
443
444 /* client certificate and key to present to server (SSL) */
445 if (client_cert)
446 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_SSLCERT, client_cert), "CURLOPT_SSLCERT");
447 if (client_privkey)
448 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_SSLKEY, client_privkey), "CURLOPT_SSLKEY");
449 if (ca_cert) {
450 /* per default if we have a CA verify both the peer and the
451 * hostname in the certificate, can be switched off later */
452 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_CAINFO, ca_cert), "CURLOPT_CAINFO");
453 handle_curl_option_return_code (curl_easy_setopt( curl, CURLOPT_SSL_VERIFYPEER, 1), "CURLOPT_SSL_VERIFYPEER");
454 handle_curl_option_return_code (curl_easy_setopt( curl, CURLOPT_SSL_VERIFYHOST, 2), "CURLOPT_SSL_VERIFYHOST");
455 } else {
456 /* backward-compatible behaviour, be tolerant in checks
457 * TODO: depending on more options have aspects we want
458 * to be less tolerant about ssl verfications
459 */
460 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_SSL_VERIFYPEER, 0), "CURLOPT_SSL_VERIFYPEER");
461 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_SSL_VERIFYHOST, 0), "CURLOPT_SSL_VERIFYHOST");
462 }
463
464 /* detect SSL library used by libcurl */
465 ssl_library = curlhelp_get_ssl_library (curl);
466
467 /* try hard to get a stack of certificates to verify against */
468 if (check_cert) {
469#if LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 19, 1)
470 /* inform curl to report back certificates */
471 switch (ssl_library) {
472 case CURLHELP_SSL_LIBRARY_OPENSSL:
473 case CURLHELP_SSL_LIBRARY_LIBRESSL:
474 /* set callback to extract certificate with OpenSSL context function (works with
475 * OpenSSL-style libraries only!) */
476#ifdef USE_OPENSSL
477 /* libcurl and monitoring plugins built with OpenSSL, good */
478 handle_curl_option_return_code (curl_easy_setopt(curl, CURLOPT_SSL_CTX_FUNCTION, sslctxfun), "CURLOPT_SSL_CTX_FUNCTION");
479 is_openssl_callback = TRUE;
480#else /* USE_OPENSSL */
481#endif /* USE_OPENSSL */
482 /* libcurl is built with OpenSSL, monitoring plugins, so falling
483 * back to manually extracting certificate information */
484 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_CERTINFO, 1L), "CURLOPT_CERTINFO");
485 break;
486
487 case CURLHELP_SSL_LIBRARY_NSS:
488#if LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 34, 0)
489 /* NSS: support for CERTINFO is implemented since 7.34.0 */
490 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_CERTINFO, 1L), "CURLOPT_CERTINFO");
491#else /* LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 34, 0) */
492 die (STATE_CRITICAL, "HTTP CRITICAL - Cannot retrieve certificates (libcurl linked with SSL library '%s' is too old)\n", curlhelp_get_ssl_library_string (ssl_library));
493#endif /* LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 34, 0) */
494 break;
495
496 case CURLHELP_SSL_LIBRARY_GNUTLS:
497#if LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 42, 0)
498 /* GnuTLS: support for CERTINFO is implemented since 7.42.0 */
499 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_CERTINFO, 1L), "CURLOPT_CERTINFO");
500#else /* LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 42, 0) */
501 die (STATE_CRITICAL, "HTTP CRITICAL - Cannot retrieve certificates (libcurl linked with SSL library '%s' is too old)\n", curlhelp_get_ssl_library_string (ssl_library));
502#endif /* LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 42, 0) */
503 break;
504
505 case CURLHELP_SSL_LIBRARY_UNKNOWN:
506 default:
507 die (STATE_CRITICAL, "HTTP CRITICAL - Cannot retrieve certificates (unknown SSL library '%s', must implement first)\n", curlhelp_get_ssl_library_string (ssl_library));
508 break;
509 }
510#else /* LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 19, 1) */
511 /* old libcurl, our only hope is OpenSSL, otherwise we are out of luck */
512 if (ssl_library == CURLHELP_SSL_LIBRARY_OPENSSL || ssl_library == CURLHELP_SSL_LIBRARY_LIBRESSL)
513 handle_curl_option_return_code (curl_easy_setopt(curl, CURLOPT_SSL_CTX_FUNCTION, sslctxfun), "CURLOPT_SSL_CTX_FUNCTION");
514 else
515 die (STATE_CRITICAL, "HTTP CRITICAL - Cannot retrieve certificates (no CURLOPT_SSL_CTX_FUNCTION, no OpenSSL library or libcurl too old and has no CURLOPT_CERTINFO)\n");
516#endif /* LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 19, 1) */
517 }
518
519#endif /* LIBCURL_FEATURE_SSL */
520
521 /* set default or user-given user agent identification */
522 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_USERAGENT, user_agent), "CURLOPT_USERAGENT");
523
524 /* proxy-authentication */
525 if (strcmp(proxy_auth, ""))
526 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_PROXYUSERPWD, proxy_auth), "CURLOPT_PROXYUSERPWD");
527
528 /* authentication */
529 if (strcmp(user_auth, ""))
530 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_USERPWD, user_auth), "CURLOPT_USERPWD");
531
532 /* TODO: parameter auth method, bitfield of following methods:
533 * CURLAUTH_BASIC (default)
534 * CURLAUTH_DIGEST
535 * CURLAUTH_DIGEST_IE
536 * CURLAUTH_NEGOTIATE
537 * CURLAUTH_NTLM
538 * CURLAUTH_NTLM_WB
539 *
540 * convenience tokens for typical sets of methods:
541 * CURLAUTH_ANYSAFE: most secure, without BASIC
542 * or CURLAUTH_ANY: most secure, even BASIC if necessary
543 *
544 * handle_curl_option_return_code (curl_easy_setopt( curl, CURLOPT_HTTPAUTH, (long)CURLAUTH_DIGEST ), "CURLOPT_HTTPAUTH");
545 */
546
547 /* handle redirections */
548 if (onredirect == STATE_DEPENDENT) {
549 if( followmethod == FOLLOW_LIBCURL ) {
550 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_FOLLOWLOCATION, 1), "CURLOPT_FOLLOWLOCATION");
551
552 /* default -1 is infinite, not good, could lead to zombie plugins!
553 Setting it to one bigger than maximal limit to handle errors nicely below
554 */
555 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_MAXREDIRS, max_depth+1), "CURLOPT_MAXREDIRS");
556
557 /* for now allow only http and https (we are a http(s) check plugin in the end) */
558#if LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 19, 4)
559 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_REDIR_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS), "CURLOPT_REDIRECT_PROTOCOLS");
560#endif /* LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 19, 4) */
561
562 /* TODO: handle the following aspects of redirection, make them
563 * command line options too later:
564 CURLOPT_POSTREDIR: method switch
565 CURLINFO_REDIRECT_URL: custom redirect option
566 CURLOPT_REDIRECT_PROTOCOLS: allow people to step outside safe protocols
567 CURLINFO_REDIRECT_COUNT: get the number of redirects, print it, maybe a range option here is nice like for expected page size?
568 */
569 } else {
570 /* old style redirection is handled below */
571 }
572 }
573
574 /* no-body */
575 if (no_body)
576 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_NOBODY, 1), "CURLOPT_NOBODY");
577
578 /* IPv4 or IPv6 forced DNS resolution */
579 if (address_family == AF_UNSPEC)
580 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_WHATEVER), "CURLOPT_IPRESOLVE(CURL_IPRESOLVE_WHATEVER)");
581 else if (address_family == AF_INET)
582 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4), "CURLOPT_IPRESOLVE(CURL_IPRESOLVE_V4)");
583#if defined (USE_IPV6) && defined (LIBCURL_FEATURE_IPV6)
584 else if (address_family == AF_INET6)
585 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V6), "CURLOPT_IPRESOLVE(CURL_IPRESOLVE_V6)");
586#endif
587
588 /* either send http POST data (any data, not only POST)*/
589 if (!strcmp(http_method, "POST") ||!strcmp(http_method, "PUT")) {
590 /* set content of payload for POST and PUT */
591 if (http_content_type) {
592 snprintf (http_header, DEFAULT_BUFFER_SIZE, "Content-Type: %s", http_content_type);
593 header_list = curl_slist_append (header_list, http_header);
594 }
595 /* NULL indicates "HTTP Continue" in libcurl, provide an empty string
596 * in case of no POST/PUT data */
597 if (!http_post_data)
598 http_post_data = "";
599 if (!strcmp(http_method, "POST")) {
600 /* POST method, set payload with CURLOPT_POSTFIELDS */
601 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_POSTFIELDS, http_post_data), "CURLOPT_POSTFIELDS");
602 } else if (!strcmp(http_method, "PUT")) {
603 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_READFUNCTION, (curl_read_callback)curlhelp_buffer_read_callback), "CURLOPT_READFUNCTION");
604 curlhelp_initreadbuffer (&put_buf, http_post_data, strlen (http_post_data));
605 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_READDATA, (void *)&put_buf), "CURLOPT_READDATA");
606 handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_INFILESIZE, (curl_off_t)strlen (http_post_data)), "CURLOPT_INFILESIZE");
607 }
608 }
609
610 /* do the request */
611 res = curl_easy_perform(curl);
612
613 if (verbose>=2 && http_post_data)
614 printf ("**** REQUEST CONTENT ****\n%s\n", http_post_data);
615
616 /* free header and server IP resolve lists, we don't need it anymore */
617 curl_slist_free_all (header_list); header_list = NULL;
618 curl_slist_free_all (server_ips); server_ips = NULL;
619
620 /* Curl errors, result in critical Nagios state */
621 if (res != CURLE_OK) {
622 snprintf (msg, DEFAULT_BUFFER_SIZE, _("Invalid HTTP response received from host on port %d: cURL returned %d - %s"),
623 server_port, res, curl_easy_strerror(res));
624 die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
625 }
626
627 /* certificate checks */
628#ifdef LIBCURL_FEATURE_SSL
629 if (use_ssl == TRUE) {
630 if (check_cert == TRUE) {
631 if (is_openssl_callback) {
632#ifdef USE_OPENSSL
633 /* check certificate with OpenSSL functions, curl has been built against OpenSSL
634 * and we actually have OpenSSL in the monitoring tools
635 */
636 result = np_net_ssl_check_certificate(cert, days_till_exp_warn, days_till_exp_crit);
637 return result;
638#else /* USE_OPENSSL */
639 die (STATE_CRITICAL, "HTTP CRITICAL - Cannot retrieve certificates - OpenSSL callback used and not linked against OpenSSL\n");
640#endif /* USE_OPENSSL */
641 } else {
642 int i;
643 struct curl_slist *slist;
644
645 cert_ptr.to_info = NULL;
646 res = curl_easy_getinfo (curl, CURLINFO_CERTINFO, &cert_ptr.to_info);
647 if (!res && cert_ptr.to_info) {
648#ifdef USE_OPENSSL
649 /* We have no OpenSSL in libcurl, but we can use OpenSSL for X509 cert parsing
650 * We only check the first certificate and assume it's the one of the server
651 */
652 const char* raw_cert = NULL;
653 for (i = 0; i < cert_ptr.to_certinfo->num_of_certs; i++) {
654 for (slist = cert_ptr.to_certinfo->certinfo[i]; slist; slist = slist->next) {
655 if (verbose >= 2)
656 printf ("%d ** %s\n", i, slist->data);
657 if (strncmp (slist->data, "Cert:", 5) == 0) {
658 raw_cert = &slist->data[5];
659 goto GOT_FIRST_CERT;
660 }
661 }
662 }
663GOT_FIRST_CERT:
664 if (!raw_cert) {
665 snprintf (msg, DEFAULT_BUFFER_SIZE, _("Cannot retrieve certificates from CERTINFO information - certificate data was empty"));
666 die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
667 }
668 BIO* cert_BIO = BIO_new (BIO_s_mem());
669 BIO_write (cert_BIO, raw_cert, strlen(raw_cert));
670 cert = PEM_read_bio_X509 (cert_BIO, NULL, NULL, NULL);
671 if (!cert) {
672 snprintf (msg, DEFAULT_BUFFER_SIZE, _("Cannot read certificate from CERTINFO information - BIO error"));
673 die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
674 }
675 BIO_free (cert_BIO);
676 result = np_net_ssl_check_certificate(cert, days_till_exp_warn, days_till_exp_crit);
677 return result;
678#else /* USE_OPENSSL */
679 /* We assume we don't have OpenSSL and np_net_ssl_check_certificate at our disposal,
680 * so we use the libcurl CURLINFO data
681 */
682 result = net_noopenssl_check_certificate(&cert_ptr, days_till_exp_warn, days_till_exp_crit);
683 return result;
684#endif /* USE_OPENSSL */
685 } else {
686 snprintf (msg, DEFAULT_BUFFER_SIZE, _("Cannot retrieve certificates - cURL returned %d - %s"),
687 res, curl_easy_strerror(res));
688 die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
689 }
690 }
691 }
692 }
693#endif /* LIBCURL_FEATURE_SSL */
694
695 /* we got the data and we executed the request in a given time, so we can append
696 * performance data to the answer always
697 */
698 handle_curl_option_return_code (curl_easy_getinfo (curl, CURLINFO_TOTAL_TIME, &total_time), "CURLINFO_TOTAL_TIME");
699 page_len = get_content_length(&header_buf, &body_buf);
700 if(show_extended_perfdata) {
701 handle_curl_option_return_code (curl_easy_getinfo(curl, CURLINFO_CONNECT_TIME, &time_connect), "CURLINFO_CONNECT_TIME");
702 handle_curl_option_return_code (curl_easy_getinfo(curl, CURLINFO_APPCONNECT_TIME, &time_appconnect), "CURLINFO_APPCONNECT_TIME");
703 handle_curl_option_return_code (curl_easy_getinfo(curl, CURLINFO_PRETRANSFER_TIME, &time_headers), "CURLINFO_PRETRANSFER_TIME");
704 handle_curl_option_return_code (curl_easy_getinfo(curl, CURLINFO_STARTTRANSFER_TIME, &time_firstbyte), "CURLINFO_STARTTRANSFER_TIME");
705 snprintf(perfstring, DEFAULT_BUFFER_SIZE, "%s %s %s %s %s %s %s",
706 perfd_time(total_time),
707 perfd_size(page_len),
708 perfd_time_connect(time_connect),
709 use_ssl == TRUE ? perfd_time_ssl (time_appconnect-time_connect) : "",
710 perfd_time_headers(time_headers - time_appconnect),
711 perfd_time_firstbyte(time_firstbyte - time_headers),
712 perfd_time_transfer(total_time-time_firstbyte)
713 );
714 } else {
715 snprintf(perfstring, DEFAULT_BUFFER_SIZE, "%s %s",
716 perfd_time(total_time),
717 perfd_size(page_len)
718 );
719 }
720
721 /* return a CRITICAL status if we couldn't read any data */
722 if (strlen(header_buf.buf) == 0 && strlen(body_buf.buf) == 0)
723 die (STATE_CRITICAL, _("HTTP CRITICAL - No header received from host\n"));
724
725 /* get status line of answer, check sanity of HTTP code */
726 if (curlhelp_parse_statusline (header_buf.buf, &status_line) < 0) {
727 snprintf (msg, DEFAULT_BUFFER_SIZE, "Unparsable status line in %.3g seconds response time|%s\n",
728 total_time, perfstring);
729 die (STATE_CRITICAL, "HTTP CRITICAL HTTP/1.x %ld unknown - %s", code, msg);
730 }
731
732 /* get result code from cURL */
733 handle_curl_option_return_code (curl_easy_getinfo (curl, CURLINFO_RESPONSE_CODE, &code), "CURLINFO_RESPONSE_CODE");
734 if (verbose>=2)
735 printf ("* curl CURLINFO_RESPONSE_CODE is %ld\n", code);
736
737 /* print status line, header, body if verbose */
738 if (verbose >= 2) {
739 printf ("**** HEADER ****\n%s\n**** CONTENT ****\n%s\n", header_buf.buf,
740 (no_body ? " [[ skipped ]]" : body_buf.buf));
741 }
742
743 /* make sure the status line matches the response we are looking for */
744 if (!expected_statuscode(status_line.first_line, server_expect)) {
745 if (server_port == HTTP_PORT)
746 snprintf(msg, DEFAULT_BUFFER_SIZE, _("Invalid HTTP response received from host: %s\n"), status_line.first_line);
747 else
748 snprintf(msg, DEFAULT_BUFFER_SIZE, _("Invalid HTTP response received from host on port %d: %s\n"), server_port, status_line.first_line);
749 die (STATE_CRITICAL, "HTTP CRITICAL - %s", msg);
750 }
751
752 if( server_expect_yn ) {
753 snprintf(msg, DEFAULT_BUFFER_SIZE, _("Status line output matched \"%s\" - "), server_expect);
754 if (verbose)
755 printf ("%s\n",msg);
756 result = STATE_OK;
757 }
758 else {
759 /* illegal return codes result in a critical state */
760 if (code >= 600 || code < 100) {
761 die (STATE_CRITICAL, _("HTTP CRITICAL: Invalid Status (%d, %.40s)\n"), status_line.http_code, status_line.msg);
762 /* server errors result in a critical state */
763 } else if (code >= 500) {
764 result = STATE_CRITICAL;
765 /* client errors result in a warning state */
766 } else if (code >= 400) {
767 result = STATE_WARNING;
768 /* check redirected page if specified */
769 } else if (code >= 300) {
770 if (onredirect == STATE_DEPENDENT) {
771 if( followmethod == FOLLOW_LIBCURL ) {
772 code = status_line.http_code;
773 } else {
774 /* old check_http style redirection, if we come
775 * back here, we are in the same status as with
776 * the libcurl method
777 */
778 redir (&header_buf);
779 }
780 } else {
781 /* this is a specific code in the command line to
782 * be returned when a redirection is encoutered
783 */
784 }
785 result = max_state_alt (onredirect, result);
786 /* all other codes are considered ok */
787 } else {
788 result = STATE_OK;
789 }
790 }
791
792 /* libcurl redirection internally, handle error states here */
793 if( followmethod == FOLLOW_LIBCURL ) {
794 handle_curl_option_return_code (curl_easy_getinfo (curl, CURLINFO_REDIRECT_COUNT, &redir_depth), "CURLINFO_REDIRECT_COUNT");
795 if (verbose >= 2)
796 printf(_("* curl LIBINFO_REDIRECT_COUNT is %d\n"), redir_depth);
797 if (redir_depth > max_depth) {
798 snprintf (msg, DEFAULT_BUFFER_SIZE, "maximum redirection depth %d exceeded in libcurl",
799 max_depth);
800 die (STATE_WARNING, "HTTP WARNING - %s", msg);
801 }
802 }
803
804 /* check status codes, set exit status accordingly */
805 if( status_line.http_code != code ) {
806 die (STATE_CRITICAL, _("HTTP CRITICAL HTTP/%d.%d %d %s - different HTTP codes (cUrl has %ld)\n"),
807 status_line.http_major, status_line.http_minor,
808 status_line.http_code, status_line.msg, code);
809 }
810
811 if (maximum_age >= 0) {
812 result = max_state_alt(check_document_dates(&header_buf, &msg), result);
813 }
814
815 /* Page and Header content checks go here */
816
817 if (strlen (header_expect)) {
818 if (!strstr (header_buf.buf, header_expect)) {
819 strncpy(&output_header_search[0],header_expect,sizeof(output_header_search));
820 if(output_header_search[sizeof(output_header_search)-1]!='\0') {
821 bcopy("...",&output_header_search[sizeof(output_header_search)-4],4);
822 }
823 snprintf (msg, DEFAULT_BUFFER_SIZE, _("%sheader '%s' not found on '%s://%s:%d%s', "), msg, output_header_search, use_ssl ? "https" : "http", host_name ? host_name : server_address, server_port, server_url);
824 result = STATE_CRITICAL;
825 }
826 }
827
828 if (strlen (string_expect)) {
829 if (!strstr (body_buf.buf, string_expect)) {
830 strncpy(&output_string_search[0],string_expect,sizeof(output_string_search));
831 if(output_string_search[sizeof(output_string_search)-1]!='\0') {
832 bcopy("...",&output_string_search[sizeof(output_string_search)-4],4);
833 }
834 snprintf (msg, DEFAULT_BUFFER_SIZE, _("%sstring '%s' not found on '%s://%s:%d%s', "), msg, output_string_search, use_ssl ? "https" : "http", host_name ? host_name : server_address, server_port, server_url);
835 result = STATE_CRITICAL;
836 }
837 }
838
839 if (strlen (regexp)) {
840 errcode = regexec (&preg, body_buf.buf, REGS, pmatch, 0);
841 if ((errcode == 0 && invert_regex == 0) || (errcode == REG_NOMATCH && invert_regex == 1)) {
842 /* OK - No-op to avoid changing the logic around it */
843 result = max_state_alt(STATE_OK, result);
844 }
845 else if ((errcode == REG_NOMATCH && invert_regex == 0) || (errcode == 0 && invert_regex == 1)) {
846 if (invert_regex == 0)
847 snprintf (msg, DEFAULT_BUFFER_SIZE, _("%spattern not found, "), msg);
848 else
849 snprintf (msg, DEFAULT_BUFFER_SIZE, _("%spattern found, "), msg);
850 result = STATE_CRITICAL;
851 }
852 else {
853 regerror (errcode, &preg, errbuf, MAX_INPUT_BUFFER);
854 snprintf (msg, DEFAULT_BUFFER_SIZE, _("%sExecute Error: %s, "), msg, errbuf);
855 result = STATE_UNKNOWN;
856 }
857 }
858
859 /* make sure the page is of an appropriate size */
860 if ((max_page_len > 0) && (page_len > max_page_len)) {
861 snprintf (msg, DEFAULT_BUFFER_SIZE, _("%spage size %d too large, "), msg, page_len);
862 result = max_state_alt(STATE_WARNING, result);
863 } else if ((min_page_len > 0) && (page_len < min_page_len)) {
864 snprintf (msg, DEFAULT_BUFFER_SIZE, _("%spage size %d too small, "), msg, page_len);
865 result = max_state_alt(STATE_WARNING, result);
866 }
867
868 /* -w, -c: check warning and critical level */
869 result = max_state_alt(get_status(total_time, thlds), result);
870
871 /* Cut-off trailing characters */
872 if(msg[strlen(msg)-2] == ',')
873 msg[strlen(msg)-2] = '\0';
874 else
875 msg[strlen(msg)-3] = '\0';
876
877 /* TODO: separate _() msg and status code: die (result, "HTTP %s: %s\n", state_text(result), msg); */
878 die (result, "HTTP %s: HTTP/%d.%d %d %s%s%s - %d bytes in %.3f second response time %s|%s\n",
879 state_text(result), status_line.http_major, status_line.http_minor,
880 status_line.http_code, status_line.msg,
881 strlen(msg) > 0 ? " - " : "",
882 msg, page_len, total_time,
883 (display_html ? "</A>" : ""),
884 perfstring);
885
886 /* proper cleanup after die? */
887 curlhelp_free_statusline(&status_line);
888 curl_easy_cleanup (curl);
889 curl_global_cleanup ();
890 curlhelp_freewritebuffer (&body_buf);
891 curlhelp_freewritebuffer (&header_buf);
892 if (!strcmp (http_method, "PUT")) {
893 curlhelp_freereadbuffer (&put_buf);
894 }
895
896 return result;
897}
898
899int
900uri_strcmp (const UriTextRangeA range, const char* s)
901{
902 if (!range.first) return -1;
903 if (range.afterLast - range.first < strlen (s)) return -1;
904 return strncmp (s, range.first, min( range.afterLast - range.first, strlen (s)));
905}
906
907char*
908uri_string (const UriTextRangeA range, char* buf, size_t buflen)
909{
910 if (!range.first) return "(null)";
911 strncpy (buf, range.first, max (buflen, range.afterLast - range.first));
912 buf[max (buflen, range.afterLast - range.first)] = '\0';
913 buf[range.afterLast - range.first] = '\0';
914 return buf;
915}
916
917void
918redir (curlhelp_write_curlbuf* header_buf)
919{
920 char *location = NULL;
921 curlhelp_statusline status_line;
922 struct phr_header headers[255];
923 size_t nof_headers = 255;
924 size_t msglen;
925 char buf[DEFAULT_BUFFER_SIZE];
926 char ipstr[INET_ADDR_MAX_SIZE];
927 int new_port;
928 char *new_host;
929 char *new_url;
930
931 int res = phr_parse_response (header_buf->buf, header_buf->buflen,
932 &status_line.http_minor, &status_line.http_code, &status_line.msg, &msglen,
933 headers, &nof_headers, 0);
934
935 location = get_header_value (headers, nof_headers, "location");
936
937 if (verbose >= 2)
938 printf(_("* Seen redirect location %s\n"), location);
939
940 if (++redir_depth > max_depth)
941 die (STATE_WARNING,
942 _("HTTP WARNING - maximum redirection depth %d exceeded - %s%s\n"),
943 max_depth, location, (display_html ? "</A>" : ""));
944
945 UriParserStateA state;
946 UriUriA uri;
947 state.uri = &uri;
948 if (uriParseUriA (&state, location) != URI_SUCCESS) {
949 if (state.errorCode == URI_ERROR_SYNTAX) {
950 die (STATE_UNKNOWN,
951 _("HTTP UNKNOWN - Could not parse redirect location '%s'%s\n"),
952 location, (display_html ? "</A>" : ""));
953 } else if (state.errorCode == URI_ERROR_MALLOC) {
954 die (STATE_UNKNOWN, _("HTTP UNKNOWN - Could not allocate URL\n"));
955 }
956 }
957
958 if (verbose >= 2) {
959 printf (_("** scheme: %s\n"),
960 uri_string (uri.scheme, buf, DEFAULT_BUFFER_SIZE));
961 printf (_("** host: %s\n"),
962 uri_string (uri.hostText, buf, DEFAULT_BUFFER_SIZE));
963 printf (_("** port: %s\n"),
964 uri_string (uri.portText, buf, DEFAULT_BUFFER_SIZE));
965 if (uri.hostData.ip4) {
966 inet_ntop (AF_INET, uri.hostData.ip4->data, ipstr, sizeof (ipstr));
967 printf (_("** IPv4: %s\n"), ipstr);
968 }
969 if (uri.hostData.ip6) {
970 inet_ntop (AF_INET, uri.hostData.ip6->data, ipstr, sizeof (ipstr));
971 printf (_("** IPv6: %s\n"), ipstr);
972 }
973 if (uri.pathHead) {
974 printf (_("** path: "));
975 const UriPathSegmentA* p = uri.pathHead;
976 for (; p; p = p->next) {
977 printf ("/%s", uri_string (p->text, buf, DEFAULT_BUFFER_SIZE));
978 }
979 puts ("");
980 }
981 if (uri.query.first) {
982 printf (_("** query: %s\n"),
983 uri_string (uri.query, buf, DEFAULT_BUFFER_SIZE));
984 }
985 if (uri.fragment.first) {
986 printf (_("** fragment: %s\n"),
987 uri_string (uri.fragment, buf, DEFAULT_BUFFER_SIZE));
988 }
989 }
990
991 use_ssl = !uri_strcmp (uri.scheme, "https");
992
993 /* we do a sloppy test here only, because uriparser would have failed
994 * above, if the port would be invalid, we just check for MAX_PORT
995 */
996 if (uri.portText.first) {
997 new_port = atoi (uri_string (uri.portText, buf, DEFAULT_BUFFER_SIZE));
998 } else {
999 new_port = HTTP_PORT;
1000 if (use_ssl)
1001 new_port = HTTPS_PORT;
1002 }
1003 if (new_port > MAX_PORT)
1004 die (STATE_UNKNOWN,
1005 _("HTTP UNKNOWN - Redirection to port above %d - %s%s\n"),
1006 MAX_PORT, location, display_html ? "</A>" : "");
1007
1008 /* by RFC 7231 relative URLs in Location should be taken relative to
1009 * the original URL, so wy try to form a new absolute URL here
1010 */
1011 if (!uri.scheme.first && !uri.hostText.first) {
1012 new_host = strdup (host_name ? host_name : server_address);
1013 } else {
1014 new_host = strdup (uri_string (uri.hostText, buf, DEFAULT_BUFFER_SIZE));
1015 }
1016
1017 /* compose new path */
1018 /* TODO: handle fragments and query part of URL */
1019 new_url = (char *)calloc( 1, DEFAULT_BUFFER_SIZE);
1020 if (uri.pathHead) {
1021 const UriPathSegmentA* p = uri.pathHead;
1022 for (; p; p = p->next) {
1023 strncat (new_url, "/", DEFAULT_BUFFER_SIZE);
1024 strncat (new_url, uri_string (p->text, buf, DEFAULT_BUFFER_SIZE), DEFAULT_BUFFER_SIZE);
1025 }
1026 }
1027
1028 if (server_port==new_port &&
1029 !strncmp(server_address, new_host, MAX_IPV4_HOSTLENGTH) &&
1030 (host_name && !strncmp(host_name, new_host, MAX_IPV4_HOSTLENGTH)) &&
1031 !strcmp(server_url, new_url))
1032 die (STATE_WARNING,
1033 _("HTTP WARNING - redirection creates an infinite loop - %s://%s:%d%s%s\n"),
1034 use_ssl ? "https" : "http", new_host, new_port, new_url, (display_html ? "</A>" : ""));
1035
1036 /* set new values for redirected request */
1037
1038 if (!(followsticky & STICKY_HOST)) {
1039 free (server_address);
1040 server_address = strndup (new_host, MAX_IPV4_HOSTLENGTH);
1041 }
1042 if (!(followsticky & STICKY_PORT)) {
1043 server_port = (unsigned short)new_port;
1044 }
1045
1046 free (host_name);
1047 host_name = strndup (new_host, MAX_IPV4_HOSTLENGTH);
1048
1049 /* reset virtual port */
1050 virtual_port = server_port;
1051
1052 free(new_host);
1053 free (server_url);
1054 server_url = new_url;
1055
1056 uriFreeUriMembersA (&uri);
1057
1058 if (verbose)
1059 printf (_("Redirection to %s://%s:%d%s\n"), use_ssl ? "https" : "http",
1060 host_name ? host_name : server_address, server_port, server_url);
1061
1062 /* TODO: the hash component MUST be taken from the original URL and
1063 * attached to the URL in Location
1064 */
1065
1066 check_http ();
1067}
1068
1069/* check whether a file exists */
1070void
1071test_file (char *path)
1072{
1073 if (access(path, R_OK) == 0)
1074 return;
1075 usage2 (_("file does not exist or is not readable"), path);
1076}
1077
1078int
1079process_arguments (int argc, char **argv)
1080{
1081 char *p;
1082 int c = 1;
1083 char *temp;
1084
1085 enum {
1086 INVERT_REGEX = CHAR_MAX + 1,
1087 SNI_OPTION,
1088 CA_CERT_OPTION
1089 };
1090
1091 int option = 0;
1092 int got_plus = 0;
1093 static struct option longopts[] = {
1094 STD_LONG_OPTS,
1095 {"link", no_argument, 0, 'L'},
1096 {"nohtml", no_argument, 0, 'n'},
1097 {"ssl", optional_argument, 0, 'S'},
1098 {"sni", no_argument, 0, SNI_OPTION},
1099 {"post", required_argument, 0, 'P'},
1100 {"method", required_argument, 0, 'j'},
1101 {"IP-address", required_argument, 0, 'I'},
1102 {"url", required_argument, 0, 'u'},
1103 {"port", required_argument, 0, 'p'},
1104 {"authorization", required_argument, 0, 'a'},
1105 {"proxy-authorization", required_argument, 0, 'b'},
1106 {"header-string", required_argument, 0, 'd'},
1107 {"string", required_argument, 0, 's'},
1108 {"expect", required_argument, 0, 'e'},
1109 {"regex", required_argument, 0, 'r'},
1110 {"ereg", required_argument, 0, 'r'},
1111 {"eregi", required_argument, 0, 'R'},
1112 {"linespan", no_argument, 0, 'l'},
1113 {"onredirect", required_argument, 0, 'f'},
1114 {"certificate", required_argument, 0, 'C'},
1115 {"client-cert", required_argument, 0, 'J'},
1116 {"private-key", required_argument, 0, 'K'},
1117 {"ca-cert", required_argument, 0, CA_CERT_OPTION},
1118 {"useragent", required_argument, 0, 'A'},
1119 {"header", required_argument, 0, 'k'},
1120 {"no-body", no_argument, 0, 'N'},
1121 {"max-age", required_argument, 0, 'M'},
1122 {"content-type", required_argument, 0, 'T'},
1123 {"pagesize", required_argument, 0, 'm'},
1124 {"invert-regex", no_argument, NULL, INVERT_REGEX},
1125 {"use-ipv4", no_argument, 0, '4'},
1126 {"use-ipv6", no_argument, 0, '6'},
1127 {"extended-perfdata", no_argument, 0, 'E'},
1128 {0, 0, 0, 0}
1129 };
1130
1131 if (argc < 2)
1132 return ERROR;
1133
1134 /* support check_http compatible arguments */
1135 for (c = 1; c < argc; c++) {
1136 if (strcmp ("-to", argv[c]) == 0)
1137 strcpy (argv[c], "-t");
1138 if (strcmp ("-hn", argv[c]) == 0)
1139 strcpy (argv[c], "-H");
1140 if (strcmp ("-wt", argv[c]) == 0)
1141 strcpy (argv[c], "-w");
1142 if (strcmp ("-ct", argv[c]) == 0)
1143 strcpy (argv[c], "-c");
1144 if (strcmp ("-nohtml", argv[c]) == 0)
1145 strcpy (argv[c], "-n");
1146 }
1147
1148 server_url = strdup(DEFAULT_SERVER_URL);
1149
1150 while (1) {
1151 c = getopt_long (argc, argv, "Vvh46t:c:w:A:k:H:P:j:T:I:a:b:d:e:p:s:R:r:u:f:C:J:K:nlLS::m:M:NE", longopts, &option);
1152 if (c == -1 || c == EOF || c == 1)
1153 break;
1154
1155 switch (c) {
1156 case 'h':
1157 print_help();
1158 exit(STATE_UNKNOWN);
1159 break;
1160 case 'V':
1161 print_revision(progname, NP_VERSION);
1162 print_curl_version();
1163 exit(STATE_UNKNOWN);
1164 break;
1165 case 'v':
1166 verbose++;
1167 break;
1168 case 't': /* timeout period */
1169 if (!is_intnonneg (optarg))
1170 usage2 (_("Timeout interval must be a positive integer"), optarg);
1171 else
1172 socket_timeout = (int)strtol (optarg, NULL, 10);
1173 break;
1174 case 'c': /* critical time threshold */
1175 critical_thresholds = optarg;
1176 break;
1177 case 'w': /* warning time threshold */
1178 warning_thresholds = optarg;
1179 break;
1180 case 'H': /* virtual host */
1181 host_name = strdup (optarg);
1182 if (host_name[0] == '[') {
1183 if ((p = strstr (host_name, "]:")) != NULL) { /* [IPv6]:port */
1184 virtual_port = atoi (p + 2);
1185 /* cut off the port */
1186 host_name_length = strlen (host_name) - strlen (p) - 1;
1187 free (host_name);
1188 host_name = strndup (optarg, host_name_length);
1189 }
1190 } else if ((p = strchr (host_name, ':')) != NULL
1191 && strchr (++p, ':') == NULL) { /* IPv4:port or host:port */
1192 virtual_port = atoi (p);
1193 /* cut off the port */
1194 host_name_length = strlen (host_name) - strlen (p) - 1;
1195 free (host_name);
1196 host_name = strndup (optarg, host_name_length);
1197 }
1198 break;
1199 case 'I': /* internet address */
1200 server_address = strdup (optarg);
1201 break;
1202 case 'u': /* URL path */
1203 server_url = strdup (optarg);
1204 break;
1205 case 'p': /* Server port */
1206 if (!is_intnonneg (optarg))
1207 usage2 (_("Invalid port number, expecting a non-negative number"), optarg);
1208 else {
1209 if( strtol(optarg, NULL, 10) > MAX_PORT)
1210 usage2 (_("Invalid port number, supplied port number is too big"), optarg);
1211 server_port = (unsigned short)strtol(optarg, NULL, 10);
1212 specify_port = TRUE;
1213 }
1214 break;
1215 case 'a': /* authorization info */
1216 strncpy (user_auth, optarg, MAX_INPUT_BUFFER - 1);
1217 user_auth[MAX_INPUT_BUFFER - 1] = 0;
1218 break;
1219 case 'b': /* proxy-authorization info */
1220 strncpy (proxy_auth, optarg, MAX_INPUT_BUFFER - 1);
1221 proxy_auth[MAX_INPUT_BUFFER - 1] = 0;
1222 break;
1223 case 'P': /* HTTP POST data in URL encoded format; ignored if settings already */
1224 if (! http_post_data)
1225 http_post_data = strdup (optarg);
1226 if (! http_method)
1227 http_method = strdup("POST");
1228 break;
1229 case 'j': /* Set HTTP method */
1230 if (http_method)
1231 free(http_method);
1232 http_method = strdup (optarg);
1233 break;
1234 case 'A': /* useragent */
1235 strncpy (user_agent, optarg, DEFAULT_BUFFER_SIZE);
1236 user_agent[DEFAULT_BUFFER_SIZE-1] = '\0';
1237 break;
1238 case 'k': /* Additional headers */
1239 if (http_opt_headers_count == 0)
1240 http_opt_headers = malloc (sizeof (char *) * (++http_opt_headers_count));
1241 else
1242 http_opt_headers = realloc (http_opt_headers, sizeof (char *) * (++http_opt_headers_count));
1243 http_opt_headers[http_opt_headers_count - 1] = optarg;
1244 break;
1245 case 'L': /* show html link */
1246 display_html = TRUE;
1247 break;
1248 case 'n': /* do not show html link */
1249 display_html = FALSE;
1250 break;
1251 case 'C': /* Check SSL cert validity */
1252#ifdef LIBCURL_FEATURE_SSL
1253 if ((temp=strchr(optarg,','))!=NULL) {
1254 *temp='\0';
1255 if (!is_intnonneg (optarg))
1256 usage2 (_("Invalid certificate expiration period"), optarg);
1257 days_till_exp_warn = atoi(optarg);
1258 *temp=',';
1259 temp++;
1260 if (!is_intnonneg (temp))
1261 usage2 (_("Invalid certificate expiration period"), temp);
1262 days_till_exp_crit = atoi (temp);
1263 }
1264 else {
1265 days_till_exp_crit=0;
1266 if (!is_intnonneg (optarg))
1267 usage2 (_("Invalid certificate expiration period"), optarg);
1268 days_till_exp_warn = atoi (optarg);
1269 }
1270 check_cert = TRUE;
1271 goto enable_ssl;
1272#endif
1273 case 'J': /* use client certificate */
1274#ifdef LIBCURL_FEATURE_SSL
1275 test_file(optarg);
1276 client_cert = optarg;
1277 goto enable_ssl;
1278#endif
1279 case 'K': /* use client private key */
1280#ifdef LIBCURL_FEATURE_SSL
1281 test_file(optarg);
1282 client_privkey = optarg;
1283 goto enable_ssl;
1284#endif
1285#ifdef LIBCURL_FEATURE_SSL
1286 case CA_CERT_OPTION: /* use CA chain file */
1287 test_file(optarg);
1288 ca_cert = optarg;
1289 goto enable_ssl;
1290#endif
1291 case 'S': /* use SSL */
1292#ifdef LIBCURL_FEATURE_SSL
1293 enable_ssl:
1294 use_ssl = TRUE;
1295 /* ssl_version initialized to CURL_SSLVERSION_DEFAULT as a default.
1296 * Only set if it's non-zero. This helps when we include multiple
1297 * parameters, like -S and -C combinations */
1298 ssl_version = CURL_SSLVERSION_DEFAULT;
1299 if (c=='S' && optarg != NULL) {
1300 char *plus_ptr = strchr(optarg, '+');
1301 if (plus_ptr) {
1302 got_plus = 1;
1303 *plus_ptr = '\0';
1304 }
1305
1306 if (optarg[0] == '2')
1307 ssl_version = CURL_SSLVERSION_SSLv2;
1308 else if (optarg[0] == '3')
1309 ssl_version = CURL_SSLVERSION_SSLv3;
1310 else if (!strcmp (optarg, "1") || !strcmp (optarg, "1.0"))
1311#if LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 34, 0)
1312 ssl_version = CURL_SSLVERSION_TLSv1_0;
1313#else
1314 ssl_version = CURL_SSLVERSION_DEFAULT;
1315#endif /* LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 34, 0) */
1316 else if (!strcmp (optarg, "1.1"))
1317#if LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 34, 0)
1318 ssl_version = CURL_SSLVERSION_TLSv1_1;
1319#else
1320 ssl_version = CURL_SSLVERSION_DEFAULT;
1321#endif /* LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 34, 0) */
1322 else if (!strcmp (optarg, "1.2"))
1323#if LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 34, 0)
1324 ssl_version = CURL_SSLVERSION_TLSv1_2;
1325#else
1326 ssl_version = CURL_SSLVERSION_DEFAULT;
1327#endif /* LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 34, 0) */
1328 else if (!strcmp (optarg, "1.3"))
1329#if LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 52, 0)
1330 ssl_version = CURL_SSLVERSION_TLSv1_3;
1331#else
1332 ssl_version = CURL_SSLVERSION_DEFAULT;
1333#endif /* LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 52, 0) */
1334 else
1335 usage4 (_("Invalid option - Valid SSL/TLS versions: 2, 3, 1, 1.1, 1.2 (with optional '+' suffix)"));
1336 }
1337#if LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 54, 0)
1338 if (got_plus) {
1339 switch (ssl_version) {
1340 case CURL_SSLVERSION_TLSv1_3:
1341 ssl_version |= CURL_SSLVERSION_MAX_TLSv1_3;
1342 break;
1343 case CURL_SSLVERSION_TLSv1_2:
1344 case CURL_SSLVERSION_TLSv1_1:
1345 case CURL_SSLVERSION_TLSv1_0:
1346 ssl_version |= CURL_SSLVERSION_MAX_DEFAULT;
1347 break;
1348 }
1349 } else {
1350 switch (ssl_version) {
1351 case CURL_SSLVERSION_TLSv1_3:
1352 ssl_version |= CURL_SSLVERSION_MAX_TLSv1_3;
1353 break;
1354 case CURL_SSLVERSION_TLSv1_2:
1355 ssl_version |= CURL_SSLVERSION_MAX_TLSv1_2;
1356 break;
1357 case CURL_SSLVERSION_TLSv1_1:
1358 ssl_version |= CURL_SSLVERSION_MAX_TLSv1_1;
1359 break;
1360 case CURL_SSLVERSION_TLSv1_0:
1361 ssl_version |= CURL_SSLVERSION_MAX_TLSv1_0;
1362 break;
1363 }
1364 }
1365#endif /* LIBCURL_VERSION_NUM >= MAKE_LIBCURL_VERSION(7, 54, 0) */
1366 if (verbose >= 2)
1367 printf(_("* Set SSL/TLS version to %d\n"), ssl_version);
1368 if (specify_port == FALSE)
1369 server_port = HTTPS_PORT;
1370 break;
1371#else /* LIBCURL_FEATURE_SSL */
1372 /* -C -J and -K fall through to here without SSL */
1373 usage4 (_("Invalid option - SSL is not available"));
1374 break;
1375 case SNI_OPTION: /* --sni is parsed, but ignored, the default is TRUE with libcurl */
1376 use_sni = TRUE;
1377 break;
1378#endif /* LIBCURL_FEATURE_SSL */
1379 case 'f': /* onredirect */
1380 if (!strcmp (optarg, "ok"))
1381 onredirect = STATE_OK;
1382 else if (!strcmp (optarg, "warning"))
1383 onredirect = STATE_WARNING;
1384 else if (!strcmp (optarg, "critical"))
1385 onredirect = STATE_CRITICAL;
1386 else if (!strcmp (optarg, "unknown"))
1387 onredirect = STATE_UNKNOWN;
1388 else if (!strcmp (optarg, "follow"))
1389 onredirect = STATE_DEPENDENT;
1390 else if (!strcmp (optarg, "stickyport"))
1391 onredirect = STATE_DEPENDENT, followmethod = FOLLOW_HTTP_CURL, followsticky = STICKY_HOST|STICKY_PORT;
1392 else if (!strcmp (optarg, "sticky"))
1393 onredirect = STATE_DEPENDENT, followmethod = FOLLOW_HTTP_CURL, followsticky = STICKY_HOST;
1394 else if (!strcmp (optarg, "follow"))
1395 onredirect = STATE_DEPENDENT, followmethod = FOLLOW_HTTP_CURL, followsticky = STICKY_NONE;
1396 else if (!strcmp (optarg, "curl"))
1397 onredirect = STATE_DEPENDENT, followmethod = FOLLOW_LIBCURL;
1398 else usage2 (_("Invalid onredirect option"), optarg);
1399 if (verbose >= 2)
1400 printf(_("* Following redirects set to %s\n"), state_text(onredirect));
1401 break;
1402 case 'd': /* string or substring */
1403 strncpy (header_expect, optarg, MAX_INPUT_BUFFER - 1);
1404 header_expect[MAX_INPUT_BUFFER - 1] = 0;
1405 break;
1406 case 's': /* string or substring */
1407 strncpy (string_expect, optarg, MAX_INPUT_BUFFER - 1);
1408 string_expect[MAX_INPUT_BUFFER - 1] = 0;
1409 break;
1410 case 'e': /* string or substring */
1411 strncpy (server_expect, optarg, MAX_INPUT_BUFFER - 1);
1412 server_expect[MAX_INPUT_BUFFER - 1] = 0;
1413 server_expect_yn = 1;
1414 break;
1415 case 'T': /* Content-type */
1416 http_content_type = strdup (optarg);
1417 break;
1418 case 'l': /* linespan */
1419 cflags &= ~REG_NEWLINE;
1420 break;
1421 case 'R': /* regex */
1422 cflags |= REG_ICASE;
1423 case 'r': /* regex */
1424 strncpy (regexp, optarg, MAX_RE_SIZE - 1);
1425 regexp[MAX_RE_SIZE - 1] = 0;
1426 errcode = regcomp (&preg, regexp, cflags);
1427 if (errcode != 0) {
1428 (void) regerror (errcode, &preg, errbuf, MAX_INPUT_BUFFER);
1429 printf (_("Could Not Compile Regular Expression: %s"), errbuf);
1430 return ERROR;
1431 }
1432 break;
1433 case INVERT_REGEX:
1434 invert_regex = 1;
1435 break;
1436 case '4':
1437 address_family = AF_INET;
1438 break;
1439 case '6':
1440#if defined (USE_IPV6) && defined (LIBCURL_FEATURE_IPV6)
1441 address_family = AF_INET6;
1442#else
1443 usage4 (_("IPv6 support not available"));
1444#endif
1445 break;
1446 case 'm': /* min_page_length */
1447 {
1448 char *tmp;
1449 if (strchr(optarg, ':') != (char *)NULL) {
1450 /* range, so get two values, min:max */
1451 tmp = strtok(optarg, ":");
1452 if (tmp == NULL) {
1453 printf("Bad format: try \"-m min:max\"\n");
1454 exit (STATE_WARNING);
1455 } else
1456 min_page_len = atoi(tmp);
1457
1458 tmp = strtok(NULL, ":");
1459 if (tmp == NULL) {
1460 printf("Bad format: try \"-m min:max\"\n");
1461 exit (STATE_WARNING);
1462 } else
1463 max_page_len = atoi(tmp);
1464 } else
1465 min_page_len = atoi (optarg);
1466 break;
1467 }
1468 case 'N': /* no-body */
1469 no_body = TRUE;
1470 break;
1471 case 'M': /* max-age */
1472 {
1473 int L = strlen(optarg);
1474 if (L && optarg[L-1] == 'm')
1475 maximum_age = atoi (optarg) * 60;
1476 else if (L && optarg[L-1] == 'h')
1477 maximum_age = atoi (optarg) * 60 * 60;
1478 else if (L && optarg[L-1] == 'd')
1479 maximum_age = atoi (optarg) * 60 * 60 * 24;
1480 else if (L && (optarg[L-1] == 's' ||
1481 isdigit (optarg[L-1])))
1482 maximum_age = atoi (optarg);
1483 else {
1484 fprintf (stderr, "unparsable max-age: %s\n", optarg);
1485 exit (STATE_WARNING);
1486 }
1487 if (verbose >= 2)
1488 printf ("* Maximal age of document set to %d seconds\n", maximum_age);
1489 }
1490 break;
1491 case 'E': /* show extended perfdata */
1492 show_extended_perfdata = TRUE;
1493 break;
1494 case '?':
1495 /* print short usage statement if args not parsable */
1496 usage5 ();
1497 break;
1498 }
1499 }
1500
1501 c = optind;
1502
1503 if (server_address == NULL && c < argc)
1504 server_address = strdup (argv[c++]);
1505
1506 if (host_name == NULL && c < argc)
1507 host_name = strdup (argv[c++]);
1508
1509 if (server_address == NULL) {
1510 if (host_name == NULL)
1511 usage4 (_("You must specify a server address or host name"));
1512 else
1513 server_address = strdup (host_name);
1514 }
1515
1516 set_thresholds(&thlds, warning_thresholds, critical_thresholds);
1517
1518 if (critical_thresholds && thlds->critical->end>(double)socket_timeout)
1519 socket_timeout = (int)thlds->critical->end + 1;
1520 if (verbose >= 2)
1521 printf ("* Socket timeout set to %ld seconds\n", socket_timeout);
1522
1523 if (http_method == NULL)
1524 http_method = strdup ("GET");
1525
1526 if (client_cert && !client_privkey)
1527 usage4 (_("If you use a client certificate you must also specify a private key file"));
1528
1529 if (virtual_port == 0)
1530 virtual_port = server_port;
1531 else {
1532 if ((use_ssl && server_port == HTTPS_PORT) || (!use_ssl && server_port == HTTP_PORT))
1533 if(specify_port == FALSE)
1534 server_port = virtual_port;
1535 }
1536
1537 return TRUE;
1538}
1539
1540char *perfd_time (double elapsed_time)
1541{
1542 return fperfdata ("time", elapsed_time, "s",
1543 thlds->warning?TRUE:FALSE, thlds->warning?thlds->warning->end:0,
1544 thlds->critical?TRUE:FALSE, thlds->critical?thlds->critical->end:0,
1545 TRUE, 0, TRUE, socket_timeout);
1546}
1547
1548char *perfd_time_connect (double elapsed_time_connect)
1549{
1550 return fperfdata ("time_connect", elapsed_time_connect, "s", FALSE, 0, FALSE, 0, FALSE, 0, TRUE, socket_timeout);
1551}
1552
1553char *perfd_time_ssl (double elapsed_time_ssl)
1554{
1555 return fperfdata ("time_ssl", elapsed_time_ssl, "s", FALSE, 0, FALSE, 0, FALSE, 0, TRUE, socket_timeout);
1556}
1557
1558char *perfd_time_headers (double elapsed_time_headers)
1559{
1560 return fperfdata ("time_headers", elapsed_time_headers, "s", FALSE, 0, FALSE, 0, FALSE, 0, TRUE, socket_timeout);
1561}
1562
1563char *perfd_time_firstbyte (double elapsed_time_firstbyte)
1564{
1565 return fperfdata ("time_firstbyte", elapsed_time_firstbyte, "s", FALSE, 0, FALSE, 0, FALSE, 0, TRUE, socket_timeout);
1566}
1567
1568char *perfd_time_transfer (double elapsed_time_transfer)
1569{
1570 return fperfdata ("time_transfer", elapsed_time_transfer, "s", FALSE, 0, FALSE, 0, FALSE, 0, TRUE, socket_timeout);
1571}
1572
1573char *perfd_size (int page_len)
1574{
1575 return perfdata ("size", page_len, "B",
1576 (min_page_len>0?TRUE:FALSE), min_page_len,
1577 (min_page_len>0?TRUE:FALSE), 0,
1578 TRUE, 0, FALSE, 0);
1579}
1580
1581void
1582print_help (void)
1583{
1584 print_revision (progname, NP_VERSION);
1585
1586 printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
1587 printf (COPYRIGHT, copyright, email);
1588
1589 printf ("%s\n", _("This plugin tests the HTTP service on the specified host. It can test"));
1590 printf ("%s\n", _("normal (http) and secure (https) servers, follow redirects, search for"));
1591 printf ("%s\n", _("strings and regular expressions, check connection times, and report on"));
1592 printf ("%s\n", _("certificate expiration times."));
1593 printf ("\n");
1594 printf ("%s\n", _("It makes use of libcurl to do so. It tries to be as compatible to check_http"));
1595 printf ("%s\n", _("as possible."));
1596
1597 printf ("\n\n");
1598
1599 print_usage ();
1600
1601 printf (_("NOTE: One or both of -H and -I must be specified"));
1602
1603 printf ("\n");
1604
1605 printf (UT_HELP_VRSN);
1606 printf (UT_EXTRA_OPTS);
1607
1608 printf (" %s\n", "-H, --hostname=ADDRESS");
1609 printf (" %s\n", _("Host name argument for servers using host headers (virtual host)"));
1610 printf (" %s\n", _("Append a port to include it in the header (eg: example.com:5000)"));
1611 printf (" %s\n", "-I, --IP-address=ADDRESS");
1612 printf (" %s\n", _("IP address or name (use numeric address if possible to bypass DNS lookup)."));
1613 printf (" %s\n", "-p, --port=INTEGER");
1614 printf (" %s", _("Port number (default: "));
1615 printf ("%d)\n", HTTP_PORT);
1616
1617 printf (UT_IPv46);
1618
1619#ifdef LIBCURL_FEATURE_SSL
1620 printf (" %s\n", "-S, --ssl=VERSION[+]");
1621 printf (" %s\n", _("Connect via SSL. Port defaults to 443. VERSION is optional, and prevents"));
1622 printf (" %s\n", _("auto-negotiation (2 = SSLv2, 3 = SSLv3, 1 = TLSv1, 1.1 = TLSv1.1,"));
1623 printf (" %s\n", _("1.2 = TLSv1.2). With a '+' suffix, newer versions are also accepted."));
1624 printf (" %s\n", _("Note: SSLv2 and SSLv3 are deprecated and are usually disabled in libcurl"));
1625 printf (" %s\n", "--sni");
1626 printf (" %s\n", _("Enable SSL/TLS hostname extension support (SNI)"));
1627#if LIBCURL_VERSION_NUM >= 0x071801
1628 printf (" %s\n", _("Note: --sni is the default in libcurl as SSLv2 and SSLV3 are deprecated and"));
1629 printf (" %s\n", _(" SNI only really works since TLSv1.0"));
1630#else
1631 printf (" %s\n", _("Note: SNI is not supported in libcurl before 7.18.1"));
1632#endif
1633 printf (" %s\n", "-C, --certificate=INTEGER[,INTEGER]");
1634 printf (" %s\n", _("Minimum number of days a certificate has to be valid. Port defaults to 443"));
1635 printf (" %s\n", _("(when this option is used the URL is not checked.)"));
1636 printf (" %s\n", "-J, --client-cert=FILE");
1637 printf (" %s\n", _("Name of file that contains the client certificate (PEM format)"));
1638 printf (" %s\n", _("to be used in establishing the SSL session"));
1639 printf (" %s\n", "-K, --private-key=FILE");
1640 printf (" %s\n", _("Name of file containing the private key (PEM format)"));
1641 printf (" %s\n", _("matching the client certificate"));
1642 printf (" %s\n", "--ca-cert=FILE");
1643 printf (" %s\n", _("CA certificate file to verify peer against"));
1644#endif
1645
1646 printf (" %s\n", "-e, --expect=STRING");
1647 printf (" %s\n", _("Comma-delimited list of strings, at least one of them is expected in"));
1648 printf (" %s", _("the first (status) line of the server response (default: "));
1649 printf ("%s)\n", HTTP_EXPECT);
1650 printf (" %s\n", _("If specified skips all other status line logic (ex: 3xx, 4xx, 5xx processing)"));
1651 printf (" %s\n", "-d, --header-string=STRING");
1652 printf (" %s\n", _("String to expect in the response headers"));
1653 printf (" %s\n", "-s, --string=STRING");
1654 printf (" %s\n", _("String to expect in the content"));
1655 printf (" %s\n", "-u, --url=PATH");
1656 printf (" %s\n", _("URL to GET or POST (default: /)"));
1657 printf (" %s\n", "-P, --post=STRING");
1658 printf (" %s\n", _("URL encoded http POST data"));
1659 printf (" %s\n", "-j, --method=STRING (for example: HEAD, OPTIONS, TRACE, PUT, DELETE, CONNECT)");
1660 printf (" %s\n", _("Set HTTP method."));
1661 printf (" %s\n", "-N, --no-body");
1662 printf (" %s\n", _("Don't wait for document body: stop reading after headers."));
1663 printf (" %s\n", _("(Note that this still does an HTTP GET or POST, not a HEAD.)"));
1664 printf (" %s\n", "-M, --max-age=SECONDS");
1665 printf (" %s\n", _("Warn if document is more than SECONDS old. the number can also be of"));
1666 printf (" %s\n", _("the form \"10m\" for minutes, \"10h\" for hours, or \"10d\" for days."));
1667 printf (" %s\n", "-T, --content-type=STRING");
1668 printf (" %s\n", _("specify Content-Type header media type when POSTing\n"));
1669 printf (" %s\n", "-l, --linespan");
1670 printf (" %s\n", _("Allow regex to span newlines (must precede -r or -R)"));
1671 printf (" %s\n", "-r, --regex, --ereg=STRING");
1672 printf (" %s\n", _("Search page for regex STRING"));
1673 printf (" %s\n", "-R, --eregi=STRING");
1674 printf (" %s\n", _("Search page for case-insensitive regex STRING"));
1675 printf (" %s\n", "--invert-regex");
1676 printf (" %s\n", _("Return CRITICAL if found, OK if not\n"));
1677 printf (" %s\n", "-a, --authorization=AUTH_PAIR");
1678 printf (" %s\n", _("Username:password on sites with basic authentication"));
1679 printf (" %s\n", "-b, --proxy-authorization=AUTH_PAIR");
1680 printf (" %s\n", _("Username:password on proxy-servers with basic authentication"));
1681 printf (" %s\n", "-A, --useragent=STRING");
1682 printf (" %s\n", _("String to be sent in http header as \"User Agent\""));
1683 printf (" %s\n", "-k, --header=STRING");
1684 printf (" %s\n", _("Any other tags to be sent in http header. Use multiple times for additional headers"));
1685 printf (" %s\n", "-E, --extended-perfdata");
1686 printf (" %s\n", _("Print additional performance data"));
1687 printf (" %s\n", "-L, --link");
1688 printf (" %s\n", _("Wrap output in HTML link (obsoleted by urlize)"));
1689 printf (" %s\n", "-f, --onredirect=<ok|warning|critical|follow|sticky|stickyport|curl>");
1690 printf (" %s\n", _("How to handle redirected pages. sticky is like follow but stick to the"));
1691 printf (" %s\n", _("specified IP address. stickyport also ensures port stays the same."));
1692 printf (" %s\n", _("follow uses the old redirection algorithm of check_http."));
1693 printf (" %s\n", _("curl uses CURL_FOLLOWLOCATION built into libcurl."));
1694 printf (" %s\n", "-m, --pagesize=INTEGER<:INTEGER>");
1695 printf (" %s\n", _("Minimum page size required (bytes) : Maximum page size required (bytes)"));
1696
1697 printf (UT_WARN_CRIT);
1698
1699 printf (UT_CONN_TIMEOUT, DEFAULT_SOCKET_TIMEOUT);
1700
1701 printf (UT_VERBOSE);
1702
1703 printf ("\n");
1704 printf ("%s\n", _("Notes:"));
1705 printf (" %s\n", _("This plugin will attempt to open an HTTP connection with the host."));
1706 printf (" %s\n", _("Successful connects return STATE_OK, refusals and timeouts return STATE_CRITICAL"));
1707 printf (" %s\n", _("other errors return STATE_UNKNOWN. Successful connects, but incorrect response"));
1708 printf (" %s\n", _("messages from the host result in STATE_WARNING return values. If you are"));
1709 printf (" %s\n", _("checking a virtual server that uses 'host headers' you must supply the FQDN"));
1710 printf (" %s\n", _("(fully qualified domain name) as the [host_name] argument."));
1711
1712#ifdef LIBCURL_FEATURE_SSL
1713 printf ("\n");
1714 printf (" %s\n", _("This plugin can also check whether an SSL enabled web server is able to"));
1715 printf (" %s\n", _("serve content (optionally within a specified time) or whether the X509 "));
1716 printf (" %s\n", _("certificate is still valid for the specified number of days."));
1717 printf ("\n");
1718 printf (" %s\n", _("Please note that this plugin does not check if the presented server"));
1719 printf (" %s\n", _("certificate matches the hostname of the server, or if the certificate"));
1720 printf (" %s\n", _("has a valid chain of trust to one of the locally installed CAs."));
1721 printf ("\n");
1722 printf ("%s\n", _("Examples:"));
1723 printf (" %s\n\n", "CHECK CONTENT: check_curl -w 5 -c 10 --ssl -H www.verisign.com");
1724 printf (" %s\n", _("When the 'www.verisign.com' server returns its content within 5 seconds,"));
1725 printf (" %s\n", _("a STATE_OK will be returned. When the server returns its content but exceeds"));
1726 printf (" %s\n", _("the 5-second threshold, a STATE_WARNING will be returned. When an error occurs,"));
1727 printf (" %s\n", _("a STATE_CRITICAL will be returned."));
1728 printf ("\n");
1729 printf (" %s\n\n", "CHECK CERTIFICATE: check_curl -H www.verisign.com -C 14");
1730 printf (" %s\n", _("When the certificate of 'www.verisign.com' is valid for more than 14 days,"));
1731 printf (" %s\n", _("a STATE_OK is returned. When the certificate is still valid, but for less than"));
1732 printf (" %s\n", _("14 days, a STATE_WARNING is returned. A STATE_CRITICAL will be returned when"));
1733 printf (" %s\n\n", _("the certificate is expired."));
1734 printf ("\n");
1735 printf (" %s\n\n", "CHECK CERTIFICATE: check_curl -H www.verisign.com -C 30,14");
1736 printf (" %s\n", _("When the certificate of 'www.verisign.com' is valid for more than 30 days,"));
1737 printf (" %s\n", _("a STATE_OK is returned. When the certificate is still valid, but for less than"));
1738 printf (" %s\n", _("30 days, but more than 14 days, a STATE_WARNING is returned."));
1739 printf (" %s\n", _("A STATE_CRITICAL will be returned when certificate expires in less than 14 days"));
1740#endif
1741
1742 printf ("\n %s\n", "CHECK WEBSERVER CONTENT VIA PROXY:");
1743 printf (" %s\n", _("It is recommended to use an environment proxy like:"));
1744 printf (" %s\n", _("http_proxy=http://192.168.100.35:3128 ./check_curl -H www.monitoring-plugins.org"));
1745 printf (" %s\n", _("legacy proxy requests in check_http style still work:"));
1746 printf (" %s\n", _("check_curl -I 192.168.100.35 -p 3128 -u http://www.monitoring-plugins.org/ -H www.monitoring-plugins.org"));
1747
1748#ifdef LIBCURL_FEATURE_SSL
1749 printf ("\n %s\n", "CHECK SSL WEBSERVER CONTENT VIA PROXY USING HTTP 1.1 CONNECT: ");
1750 printf (" %s\n", _("It is recommended to use an environment proxy like:"));
1751 printf (" %s\n", _("https_proxy=http://192.168.100.35:3128 ./check_curl -H www.verisign.com -S"));
1752 printf (" %s\n", _("legacy proxy requests in check_http style still work:"));
1753 printf (" %s\n", _("check_curl -I 192.168.100.35 -p 3128 -u https://www.verisign.com/ -S -j CONNECT -H www.verisign.com "));
1754 printf (" %s\n", _("all these options are needed: -I <proxy> -p <proxy-port> -u <check-url> -S(sl) -j CONNECT -H <webserver>"));
1755 printf (" %s\n", _("a STATE_OK will be returned. When the server returns its content but exceeds"));
1756 printf (" %s\n", _("the 5-second threshold, a STATE_WARNING will be returned. When an error occurs,"));
1757 printf (" %s\n", _("a STATE_CRITICAL will be returned."));
1758
1759#endif
1760
1761 printf (UT_SUPPORT);
1762
1763}
1764
1765
1766
1767void
1768print_usage (void)
1769{
1770 printf ("%s\n", _("Usage:"));
1771 printf (" %s -H <vhost> | -I <IP-address> [-u <uri>] [-p <port>]\n",progname);
1772 printf (" [-J <client certificate file>] [-K <private key>] [--ca-cert <CA certificate file>]\n");
1773 printf (" [-w <warn time>] [-c <critical time>] [-t <timeout>] [-L] [-E] [-a auth]\n");
1774 printf (" [-b proxy_auth] [-f <ok|warning|critcal|follow|sticky|stickyport|curl>]\n");
1775 printf (" [-e <expect>] [-d string] [-s string] [-l] [-r <regex> | -R <case-insensitive regex>]\n");
1776 printf (" [-P string] [-m <min_pg_size>:<max_pg_size>] [-4|-6] [-N] [-M <age>]\n");
1777 printf (" [-A string] [-k string] [-S <version>] [--sni] [-C <warn_age>[,<crit_age>]]\n");
1778 printf (" [-T <content-type>] [-j method]\n");
1779 printf ("\n");
1780 printf ("%s\n", _("WARNING: check_curl is experimental. Please use"));
1781 printf ("%s\n\n", _("check_http if you need a stable version."));
1782}
1783
1784void
1785print_curl_version (void)
1786{
1787 printf( "%s\n", curl_version());
1788}
1789
1790int
1791curlhelp_initwritebuffer (curlhelp_write_curlbuf *buf)
1792{
1793 buf->bufsize = DEFAULT_BUFFER_SIZE;
1794 buf->buflen = 0;
1795 buf->buf = (char *)malloc ((size_t)buf->bufsize);
1796 if (buf->buf == NULL) return -1;
1797 return 0;
1798}
1799
1800int
1801curlhelp_buffer_write_callback (void *buffer, size_t size, size_t nmemb, void *stream)
1802{
1803 curlhelp_write_curlbuf *buf = (curlhelp_write_curlbuf *)stream;
1804
1805 while (buf->bufsize < buf->buflen + size * nmemb + 1) {
1806 buf->bufsize *= buf->bufsize * 2;
1807 buf->buf = (char *)realloc (buf->buf, buf->bufsize);
1808 if (buf->buf == NULL) return -1;
1809 }
1810
1811 memcpy (buf->buf + buf->buflen, buffer, size * nmemb);
1812 buf->buflen += size * nmemb;
1813 buf->buf[buf->buflen] = '\0';
1814
1815 return (int)(size * nmemb);
1816}
1817
1818int
1819curlhelp_buffer_read_callback (void *buffer, size_t size, size_t nmemb, void *stream)
1820{
1821 curlhelp_read_curlbuf *buf = (curlhelp_read_curlbuf *)stream;
1822
1823 size_t n = min (nmemb * size, buf->buflen - buf->pos);
1824
1825 memcpy (buffer, buf->buf + buf->pos, n);
1826 buf->pos += n;
1827
1828 return (int)n;
1829}
1830
1831void
1832curlhelp_freewritebuffer (curlhelp_write_curlbuf *buf)
1833{
1834 free (buf->buf);
1835 buf->buf = NULL;
1836}
1837
1838int
1839curlhelp_initreadbuffer (curlhelp_read_curlbuf *buf, const char *data, size_t datalen)
1840{
1841 buf->buflen = datalen;
1842 buf->buf = (char *)malloc ((size_t)buf->buflen);
1843 if (buf->buf == NULL) return -1;
1844 memcpy (buf->buf, data, datalen);
1845 buf->pos = 0;
1846 return 0;
1847}
1848
1849void
1850curlhelp_freereadbuffer (curlhelp_read_curlbuf *buf)
1851{
1852 free (buf->buf);
1853 buf->buf = NULL;
1854}
1855
1856/* TODO: where to put this, it's actually part of sstrings2 (logically)?
1857 */
1858const char*
1859strrstr2(const char *haystack, const char *needle)
1860{
1861 int counter;
1862 size_t len;
1863 const char *prev_pos;
1864 const char *pos;
1865
1866 if (haystack == NULL || needle == NULL)
1867 return NULL;
1868
1869 if (haystack[0] == '\0' || needle[0] == '\0')
1870 return NULL;
1871
1872 counter = 0;
1873 prev_pos = NULL;
1874 pos = haystack;
1875 len = strlen (needle);
1876 for (;;) {
1877 pos = strstr (pos, needle);
1878 if (pos == NULL) {
1879 if (counter == 0)
1880 return NULL;
1881 else
1882 return prev_pos;
1883 }
1884 counter++;
1885 prev_pos = pos;
1886 pos += len;
1887 if (*pos == '\0') return prev_pos;
1888 }
1889}
1890
1891int
1892curlhelp_parse_statusline (const char *buf, curlhelp_statusline *status_line)
1893{
1894 char *first_line_end;
1895 char *p;
1896 size_t first_line_len;
1897 char *pp;
1898 const char *start;
1899 char *first_line_buf;
1900
1901 /* find last start of a new header */
1902 start = strrstr2 (buf, "\r\nHTTP");
1903 if (start != NULL) {
1904 start += 2;
1905 buf = start;
1906 }
1907
1908 first_line_end = strstr(buf, "\r\n");
1909 if (first_line_end == NULL) return -1;
1910
1911 first_line_len = (size_t)(first_line_end - buf);
1912 status_line->first_line = (char *)malloc (first_line_len + 1);
1913 if (status_line->first_line == NULL) return -1;
1914 memcpy (status_line->first_line, buf, first_line_len);
1915 status_line->first_line[first_line_len] = '\0';
1916 first_line_buf = strdup( status_line->first_line );
1917
1918 /* protocol and version: "HTTP/x.x" SP */
1919
1920 p = strtok(first_line_buf, "/");
1921 if( p == NULL ) { free( first_line_buf ); return -1; }
1922 if( strcmp( p, "HTTP" ) != 0 ) { free( first_line_buf ); return -1; }
1923
1924 p = strtok( NULL, "." );
1925 if( p == NULL ) { free( first_line_buf ); return -1; }
1926 status_line->http_major = (int)strtol( p, &pp, 10 );
1927 if( *pp != '\0' ) { free( first_line_buf ); return -1; }
1928
1929 p = strtok( NULL, " " );
1930 if( p == NULL ) { free( first_line_buf ); return -1; }
1931 status_line->http_minor = (int)strtol( p, &pp, 10 );
1932 if( *pp != '\0' ) { free( first_line_buf ); return -1; }
1933
1934 /* status code: "404" or "404.1", then SP */
1935
1936 p = strtok( NULL, " ." );
1937 if( p == NULL ) { free( first_line_buf ); return -1; }
1938 if( strchr( p, '.' ) != NULL ) {
1939 char *ppp;
1940 ppp = strtok( p, "." );
1941 status_line->http_code = (int)strtol( ppp, &pp, 10 );
1942 if( *pp != '\0' ) { free( first_line_buf ); return -1; }
1943
1944 ppp = strtok( NULL, "" );
1945 status_line->http_subcode = (int)strtol( ppp, &pp, 10 );
1946 if( *pp != '\0' ) { free( first_line_buf ); return -1; }
1947 } else {
1948 status_line->http_code = (int)strtol( p, &pp, 10 );
1949 status_line->http_subcode = -1;
1950 if( *pp != '\0' ) { free( first_line_buf ); return -1; }
1951 }
1952
1953 /* Human readable message: "Not Found" CRLF */
1954
1955 p = strtok( NULL, "" );
1956 if( p == NULL ) { status_line->msg = ""; return 0; }
1957 status_line->msg = status_line->first_line + ( p - first_line_buf );
1958 free( first_line_buf );
1959
1960 return 0;
1961}
1962
1963void
1964curlhelp_free_statusline (curlhelp_statusline *status_line)
1965{
1966 free (status_line->first_line);
1967}
1968
1969void
1970remove_newlines (char *s)
1971{
1972 char *p;
1973
1974 for (p = s; *p != '\0'; p++)
1975 if (*p == '\r' || *p == '\n')
1976 *p = ' ';
1977}
1978
1979char *
1980get_header_value (const struct phr_header* headers, const size_t nof_headers, const char* header)
1981{
1982 int i;
1983 for( i = 0; i < nof_headers; i++ ) {
1984 if( strncasecmp( header, headers[i].name, max( headers[i].name_len, 4 ) ) == 0 ) {
1985 return strndup( headers[i].value, headers[i].value_len );
1986 }
1987 }
1988 return NULL;
1989}
1990
1991int
1992check_document_dates (const curlhelp_write_curlbuf *header_buf, char (*msg)[DEFAULT_BUFFER_SIZE])
1993{
1994 char *server_date = NULL;
1995 char *document_date = NULL;
1996 int date_result = STATE_OK;
1997 curlhelp_statusline status_line;
1998 struct phr_header headers[255];
1999 size_t nof_headers = 255;
2000 size_t msglen;
2001
2002 int res = phr_parse_response (header_buf->buf, header_buf->buflen,
2003 &status_line.http_minor, &status_line.http_code, &status_line.msg, &msglen,
2004 headers, &nof_headers, 0);
2005
2006 server_date = get_header_value (headers, nof_headers, "date");
2007 document_date = get_header_value (headers, nof_headers, "last-modified");
2008
2009 if (!server_date || !*server_date) {
2010 snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sServer date unknown, "), *msg);
2011 date_result = max_state_alt(STATE_UNKNOWN, date_result);
2012 } else if (!document_date || !*document_date) {
2013 snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sDocument modification date unknown, "), *msg);
2014 date_result = max_state_alt(STATE_CRITICAL, date_result);
2015 } else {
2016 time_t srv_data = curl_getdate (server_date, NULL);
2017 time_t doc_data = curl_getdate (document_date, NULL);
2018 if (verbose >= 2)
2019 printf ("* server date: '%s' (%d), doc_date: '%s' (%d)\n", server_date, (int)srv_data, document_date, (int)doc_data);
2020 if (srv_data <= 0) {
2021 snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sServer date \"%100s\" unparsable, "), *msg, server_date);
2022 date_result = max_state_alt(STATE_CRITICAL, date_result);
2023 } else if (doc_data <= 0) {
2024 snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sDocument date \"%100s\" unparsable, "), *msg, document_date);
2025 date_result = max_state_alt(STATE_CRITICAL, date_result);
2026 } else if (doc_data > srv_data + 30) {
2027 snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sDocument is %d seconds in the future, "), *msg, (int)doc_data - (int)srv_data);
2028 date_result = max_state_alt(STATE_CRITICAL, date_result);
2029 } else if (doc_data < srv_data - maximum_age) {
2030 int n = (srv_data - doc_data);
2031 if (n > (60 * 60 * 24 * 2)) {
2032 snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sLast modified %.1f days ago, "), *msg, ((float) n) / (60 * 60 * 24));
2033 date_result = max_state_alt(STATE_CRITICAL, date_result);
2034 } else {
2035 snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sLast modified %d:%02d:%02d ago, "), *msg, n / (60 * 60), (n / 60) % 60, n % 60);
2036 date_result = max_state_alt(STATE_CRITICAL, date_result);
2037 }
2038 }
2039 }
2040
2041 if (server_date) free (server_date);
2042 if (document_date) free (document_date);
2043
2044 return date_result;
2045}
2046
2047
2048int
2049get_content_length (const curlhelp_write_curlbuf* header_buf, const curlhelp_write_curlbuf* body_buf)
2050{
2051 const char *s;
2052 int content_length = 0;
2053 char *copy;
2054 struct phr_header headers[255];
2055 size_t nof_headers = 255;
2056 size_t msglen;
2057 char *content_length_s = NULL;
2058 curlhelp_statusline status_line;
2059
2060 int res = phr_parse_response (header_buf->buf, header_buf->buflen,
2061 &status_line.http_minor, &status_line.http_code, &status_line.msg, &msglen,
2062 headers, &nof_headers, 0);
2063
2064 content_length_s = get_header_value (headers, nof_headers, "content-length");
2065 if (!content_length_s) {
2066 return header_buf->buflen + body_buf->buflen;
2067 }
2068 content_length_s += strspn (content_length_s, " \t");
2069 content_length = atoi (content_length_s);
2070 if (content_length != body_buf->buflen) {
2071 /* TODO: should we warn if the actual and the reported body length don't match? */
2072 }
2073
2074 if (content_length_s) free (content_length_s);
2075
2076 return header_buf->buflen + body_buf->buflen;
2077}
2078
2079/* TODO: is there a better way in libcurl to check for the SSL library? */
2080curlhelp_ssl_library
2081curlhelp_get_ssl_library (CURL* curl)
2082{
2083 curl_version_info_data* version_data;
2084 char *ssl_version;
2085 char *library;
2086 curlhelp_ssl_library ssl_library = CURLHELP_SSL_LIBRARY_UNKNOWN;
2087
2088 version_data = curl_version_info (CURLVERSION_NOW);
2089 if (version_data == NULL) return CURLHELP_SSL_LIBRARY_UNKNOWN;
2090
2091 ssl_version = strdup (version_data->ssl_version);
2092 if (ssl_version == NULL ) return CURLHELP_SSL_LIBRARY_UNKNOWN;
2093
2094 library = strtok (ssl_version, "/");
2095 if (library == NULL) return CURLHELP_SSL_LIBRARY_UNKNOWN;
2096
2097 if (strcmp (library, "OpenSSL") == 0)
2098 ssl_library = CURLHELP_SSL_LIBRARY_OPENSSL;
2099 else if (strcmp (library, "LibreSSL") == 0)
2100 ssl_library = CURLHELP_SSL_LIBRARY_LIBRESSL;
2101 else if (strcmp (library, "GnuTLS") == 0)
2102 ssl_library = CURLHELP_SSL_LIBRARY_GNUTLS;
2103 else if (strcmp (library, "NSS") == 0)
2104 ssl_library = CURLHELP_SSL_LIBRARY_NSS;
2105
2106 if (verbose >= 2)
2107 printf ("* SSL library string is : %s %s (%d)\n", version_data->ssl_version, library, ssl_library);
2108
2109 free (ssl_version);
2110
2111 return ssl_library;
2112}
2113
2114const char*
2115curlhelp_get_ssl_library_string (curlhelp_ssl_library ssl_library)
2116{
2117 switch (ssl_library) {
2118 case CURLHELP_SSL_LIBRARY_OPENSSL:
2119 return "OpenSSL";
2120 case CURLHELP_SSL_LIBRARY_LIBRESSL:
2121 return "LibreSSL";
2122 case CURLHELP_SSL_LIBRARY_GNUTLS:
2123 return "GnuTLS";
2124 case CURLHELP_SSL_LIBRARY_NSS:
2125 return "NSS";
2126 case CURLHELP_SSL_LIBRARY_UNKNOWN:
2127 default:
2128 return "unknown";
2129 }
2130}
2131
2132#ifdef LIBCURL_FEATURE_SSL
2133#ifndef USE_OPENSSL
2134time_t
2135parse_cert_date (const char *s)
2136{
2137 struct tm tm;
2138 time_t date;
2139
2140 if (!s) return -1;
2141
2142 strptime (s, "%Y-%m-%d %H:%M:%S GMT", &tm);
2143 date = mktime (&tm);
2144
2145 return date;
2146}
2147
2148/* TODO: this needs cleanup in the sslutils.c, maybe we the #else case to
2149 * OpenSSL could be this function
2150 */
2151int
2152net_noopenssl_check_certificate (cert_ptr_union* cert_ptr, int days_till_exp_warn, int days_till_exp_crit)
2153{
2154 int i;
2155 struct curl_slist* slist;
2156 int cname_found = 0;
2157 char* start_date_str = NULL;
2158 char* end_date_str = NULL;
2159 time_t start_date;
2160 time_t end_date;
2161 char *tz;
2162 float time_left;
2163 int days_left;
2164 int time_remaining;
2165 char timestamp[50] = "";
2166 int status = STATE_UNKNOWN;
2167
2168 if (verbose >= 2)
2169 printf ("**** REQUEST CERTIFICATES ****\n");
2170
2171 for (i = 0; i < cert_ptr->to_certinfo->num_of_certs; i++) {
2172 for (slist = cert_ptr->to_certinfo->certinfo[i]; slist; slist = slist->next) {
2173 /* find first common name in subject, TODO: check alternative subjects for
2174 * multi-host certificate, check wildcards
2175 */
2176 if (strncasecmp (slist->data, "Subject:", 8) == 0) {
2177 char* p = strstr (slist->data, "CN=");
2178 if (p != NULL) {
2179 if (strncmp (host_name, p+3, strlen (host_name)) == 0) {
2180 cname_found = 1;
2181 }
2182 }
2183 } else if (strncasecmp (slist->data, "Start Date:", 11) == 0) {
2184 start_date_str = &slist->data[11];
2185 } else if (strncasecmp (slist->data, "Expire Date:", 12) == 0) {
2186 end_date_str = &slist->data[12];
2187 } else if (strncasecmp (slist->data, "Cert:", 5) == 0) {
2188 goto HAVE_FIRST_CERT;
2189 }
2190 if (verbose >= 2)
2191 printf ("%d ** %s\n", i, slist->data);
2192 }
2193 }
2194HAVE_FIRST_CERT:
2195
2196 if (verbose >= 2)
2197 printf ("**** REQUEST CERTIFICATES ****\n");
2198
2199 if (!cname_found) {
2200 printf("%s\n",_("CRITICAL - Cannot retrieve certificate subject."));
2201 return STATE_CRITICAL;
2202 }
2203
2204 start_date = parse_cert_date (start_date_str);
2205 if (start_date <= 0) {
2206 snprintf (msg, DEFAULT_BUFFER_SIZE, _("WARNING - Unparsable 'Start Date' in certificate: '%s'"),
2207 start_date_str);
2208 puts (msg);
2209 return STATE_WARNING;
2210 }
2211
2212 end_date = parse_cert_date (end_date_str);
2213 if (end_date <= 0) {
2214 snprintf (msg, DEFAULT_BUFFER_SIZE, _("WARNING - Unparsable 'Expire Date' in certificate: '%s'"),
2215 start_date_str);
2216 puts (msg);
2217 return STATE_WARNING;
2218 }
2219
2220 time_left = difftime (end_date, time(NULL));
2221 days_left = time_left / 86400;
2222 tz = getenv("TZ");
2223 setenv("TZ", "GMT", 1);
2224 tzset();
2225 strftime(timestamp, 50, "%c %z", localtime(&end_date));
2226 if (tz)
2227 setenv("TZ", tz, 1);
2228 else
2229 unsetenv("TZ");
2230 tzset();
2231
2232 if (days_left > 0 && days_left <= days_till_exp_warn) {
2233 printf (_("%s - Certificate '%s' expires in %d day(s) (%s).\n"), (days_left>days_till_exp_crit)?"WARNING":"CRITICAL", host_name, days_left, timestamp);
2234 if (days_left > days_till_exp_crit)
2235 status = STATE_WARNING;
2236 else
2237 status = STATE_CRITICAL;
2238 } else if (days_left == 0 && time_left > 0) {
2239 if (time_left >= 3600)
2240 time_remaining = (int) time_left / 3600;
2241 else
2242 time_remaining = (int) time_left / 60;
2243
2244 printf (_("%s - Certificate '%s' expires in %u %s (%s)\n"),
2245 (days_left>days_till_exp_crit) ? "WARNING" : "CRITICAL", host_name, time_remaining,
2246 time_left >= 3600 ? "hours" : "minutes", timestamp);
2247
2248 if ( days_left > days_till_exp_crit)
2249 status = STATE_WARNING;
2250 else
2251 status = STATE_CRITICAL;
2252 } else if (time_left < 0) {
2253 printf(_("CRITICAL - Certificate '%s' expired on %s.\n"), host_name, timestamp);
2254 status=STATE_CRITICAL;
2255 } else if (days_left == 0) {
2256 printf (_("%s - Certificate '%s' just expired (%s).\n"), (days_left>days_till_exp_crit)?"WARNING":"CRITICAL", host_name, timestamp);
2257 if (days_left > days_till_exp_crit)
2258 status = STATE_WARNING;
2259 else
2260 status = STATE_CRITICAL;
2261 } else {
2262 printf(_("OK - Certificate '%s' will expire on %s.\n"), host_name, timestamp);
2263 status = STATE_OK;
2264 }
2265 return status;
2266}
2267#endif /* USE_OPENSSL */
2268#endif /* LIBCURL_FEATURE_SSL */