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-rw-r--r--plugins/check_http.c297
1 files changed, 29 insertions, 268 deletions
diff --git a/plugins/check_http.c b/plugins/check_http.c
index 294866b0..413d501d 100644
--- a/plugins/check_http.c
+++ b/plugins/check_http.c
@@ -37,38 +37,17 @@ enum {
37 HTTPS_PORT = 443 37 HTTPS_PORT = 443
38}; 38};
39 39
40#ifdef HAVE_SSL_H
41#include <rsa.h>
42#include <crypto.h>
43#include <x509.h>
44#include <pem.h>
45#include <ssl.h>
46#include <err.h>
47#include <rand.h>
48#else
49# ifdef HAVE_OPENSSL_SSL_H
50# include <openssl/rsa.h>
51# include <openssl/crypto.h>
52# include <openssl/x509.h>
53# include <openssl/pem.h>
54# include <openssl/ssl.h>
55# include <openssl/err.h>
56# include <openssl/rand.h>
57# endif
58#endif
59
60#ifdef HAVE_SSL 40#ifdef HAVE_SSL
61int check_cert = FALSE; 41int check_cert = FALSE;
62int days_till_exp; 42int days_till_exp;
63char *randbuff; 43char *randbuff;
64SSL_CTX *ctx;
65SSL *ssl;
66X509 *server_cert; 44X509 *server_cert;
67int connect_SSL (void); 45# define my_recv(buf, len) ((use_ssl) ? np_net_ssl_read(buf, len) : read(sd, buf, len))
68# ifdef USE_OPENSSL 46# define my_send(buf, len) ((use_ssl) ? np_net_ssl_write(buf, len) : send(sd, buf, len, 0))
69int check_certificate (X509 **); 47#else /* ifndef HAVE_SSL */
70# endif 48# define my_recv(buf, len) read(sd, buf, len)
71#endif 49# define my_send(buf, len) send(sd, buf, len, 0)
50#endif /* HAVE_SSL */
72int no_body = FALSE; 51int no_body = FALSE;
73int maximum_age = -1; 52int maximum_age = -1;
74 53
@@ -132,8 +111,6 @@ int server_type_check(const char *type);
132int server_port_check(int ssl_flag); 111int server_port_check(int ssl_flag);
133char *perfd_time (double microsec); 112char *perfd_time (double microsec);
134char *perfd_size (int page_len); 113char *perfd_size (int page_len);
135int my_recv (void);
136int my_close (void);
137void print_help (void); 114void print_help (void);
138void print_usage (void); 115void print_usage (void);
139 116
@@ -168,29 +145,7 @@ main (int argc, char **argv)
168 (void) alarm (socket_timeout); 145 (void) alarm (socket_timeout);
169 gettimeofday (&tv, NULL); 146 gettimeofday (&tv, NULL);
170 147
171#ifdef USE_OPENSSL
172 if (use_ssl && check_cert == TRUE) {
173 if (connect_SSL () != OK)
174 die (STATE_CRITICAL, _("HTTP CRITICAL - Could not make SSL connection\n"));
175 if ((server_cert = SSL_get_peer_certificate (ssl)) != NULL) {
176 result = check_certificate (&server_cert);
177 X509_free (server_cert);
178 }
179 else {
180 printf (_("CRITICAL - Cannot retrieve server certificate.\n"));
181 result = STATE_CRITICAL;
182 }
183 SSL_shutdown (ssl);
184 SSL_free (ssl);
185 SSL_CTX_free (ctx);
186 close (sd);
187 }
188 else {
189 result = check_http ();
190 }
191#else
192 result = check_http (); 148 result = check_http ();
193#endif
194 return result; 149 return result;
195} 150}
196 151
@@ -790,34 +745,27 @@ check_http (void)
790 long microsec; 745 long microsec;
791 double elapsed_time; 746 double elapsed_time;
792 int page_len = 0; 747 int page_len = 0;
748 int result = STATE_UNKNOWN;
793#ifdef HAVE_SSL 749#ifdef HAVE_SSL
794 int sslerr; 750 int sslerr;
795#endif 751#endif
796 752
797 /* try to connect to the host at the given port number */ 753 /* try to connect to the host at the given port number */
754 if (my_tcp_connect (server_address, server_port, &sd) != STATE_OK)
755 die (STATE_CRITICAL, _("Unable to open TCP socket\n"));
798#ifdef HAVE_SSL 756#ifdef HAVE_SSL
799 if (use_ssl == TRUE) { 757 if (use_ssl == TRUE) {
800 758 np_net_ssl_init(sd);
801 if (connect_SSL () != OK) { 759 if (check_cert == TRUE) {
802 die (STATE_CRITICAL, _("Unable to open TCP socket\n")); 760 result = np_net_ssl_check_cert(days_till_exp);
803 } 761 if(result != STATE_OK){
804# ifdef USE_OPENSSL 762 np_net_ssl_cleanup();
805 if ((server_cert = SSL_get_peer_certificate (ssl)) != NULL) { 763 if(sd) close(sd);
806 X509_free (server_cert); 764 return result;
807 } 765 }
808 else {
809 printf (_("CRITICAL - Cannot retrieve server certificate.\n"));
810 return STATE_CRITICAL;
811 } 766 }
812# endif /* USE_OPENSSL */
813 }
814 else {
815#endif
816 if (my_tcp_connect (server_address, server_port, &sd) != STATE_OK)
817 die (STATE_CRITICAL, _("Unable to open TCP socket\n"));
818#ifdef HAVE_SSL
819 } 767 }
820#endif 768#endif /* HAVE_SSL */
821 769
822 asprintf (&buf, "%s %s HTTP/1.0\r\n%s\r\n", http_method, server_url, user_agent); 770 asprintf (&buf, "%s %s HTTP/1.0\r\n%s\r\n", http_method, server_url, user_agent);
823 771
@@ -853,28 +801,12 @@ check_http (void)
853 asprintf (&buf, "%s%s", buf, CRLF); 801 asprintf (&buf, "%s%s", buf, CRLF);
854 } 802 }
855 803
856 if (verbose) 804 if (verbose) printf ("%s\n", buf);
857 printf ("%s\n", buf); 805 my_send (buf, strlen (buf));
858
859#ifdef HAVE_SSL
860 if (use_ssl == TRUE) {
861 if (SSL_write (ssl, buf, (int)strlen(buf)) == -1) {
862# ifdef USE_OPENSSL
863 ERR_print_errors_fp (stderr);
864# endif
865 return STATE_CRITICAL;
866 }
867 }
868 else {
869#endif
870 send (sd, buf, strlen (buf), 0);
871#ifdef HAVE_SSL
872 }
873#endif
874 806
875 /* fetch the page */ 807 /* fetch the page */
876 full_page = strdup(""); 808 full_page = strdup("");
877 while ((i = my_recv ()) > 0) { 809 while ((i = my_recv (buffer, MAX_INPUT_BUFFER-1)) > 0) {
878 buffer[i] = '\0'; 810 buffer[i] = '\0';
879 asprintf (&full_page, "%s%s", full_page, buffer); 811 asprintf (&full_page, "%s%s", full_page, buffer);
880 pagesize += i; 812 pagesize += i;
@@ -887,6 +819,7 @@ check_http (void)
887 819
888 if (i < 0 && errno != ECONNRESET) { 820 if (i < 0 && errno != ECONNRESET) {
889#ifdef HAVE_SSL 821#ifdef HAVE_SSL
822 /*
890 if (use_ssl) { 823 if (use_ssl) {
891 sslerr=SSL_get_error(ssl, i); 824 sslerr=SSL_get_error(ssl, i);
892 if ( sslerr == SSL_ERROR_SSL ) { 825 if ( sslerr == SSL_ERROR_SSL ) {
@@ -896,10 +829,13 @@ check_http (void)
896 } 829 }
897 } 830 }
898 else { 831 else {
832 */
899#endif 833#endif
900 die (STATE_CRITICAL, _("Error on receive\n")); 834 die (STATE_CRITICAL, _("Error on receive\n"));
901#ifdef HAVE_SSL 835#ifdef HAVE_SSL
836 /* XXX
902 } 837 }
838 */
903#endif 839#endif
904 } 840 }
905 841
@@ -908,7 +844,10 @@ check_http (void)
908 die (STATE_CRITICAL, _("No data received %s\n"), timestamp); 844 die (STATE_CRITICAL, _("No data received %s\n"), timestamp);
909 845
910 /* close the connection */ 846 /* close the connection */
911 my_close (); 847#ifdef HAVE_SSL
848 np_net_ssl_cleanup();
849#endif
850 if(sd) close(sd);
912 851
913 /* reset the alarm */ 852 /* reset the alarm */
914 alarm (0); 853 alarm (0);
@@ -1248,143 +1187,6 @@ server_port_check (int ssl_flag)
1248 return HTTP_PORT; 1187 return HTTP_PORT;
1249} 1188}
1250 1189
1251
1252
1253#ifdef HAVE_SSL
1254int connect_SSL (void)
1255{
1256 SSL_METHOD *meth;
1257
1258 asprintf (&randbuff, "%s", "qwertyuiopasdfghjklqwertyuiopasdfghjkl");
1259 RAND_seed (randbuff, (int)strlen(randbuff));
1260 if (verbose)
1261 printf(_("SSL seeding: %s\n"), (RAND_status()==1 ? _("OK") : _("Failed")) );
1262
1263 /* Initialize SSL context */
1264 SSLeay_add_ssl_algorithms ();
1265 meth = SSLv23_client_method ();
1266 SSL_load_error_strings ();
1267 if ((ctx = SSL_CTX_new (meth)) == NULL) {
1268 printf (_("CRITICAL - Cannot create SSL context.\n"));
1269 return STATE_CRITICAL;
1270 }
1271
1272 /* Initialize alarm signal handling */
1273 signal (SIGALRM, socket_timeout_alarm_handler);
1274
1275 /* Set socket timeout */
1276 alarm (socket_timeout);
1277
1278 /* Save start time */
1279 gettimeofday (&tv, NULL);
1280
1281 /* Make TCP connection */
1282 if (my_tcp_connect (server_address, server_port, &sd) == STATE_OK) {
1283 /* Do the SSL handshake */
1284 if ((ssl = SSL_new (ctx)) != NULL) {
1285#ifdef USE_OPENSSL
1286 SSL_set_cipher_list(ssl, "ALL");
1287#endif
1288 SSL_set_fd (ssl, sd);
1289 if (SSL_connect (ssl) != -1)
1290 return OK;
1291#ifdef USE_OPENSSL
1292 ERR_print_errors_fp (stderr);
1293#endif
1294 }
1295 else {
1296 printf (_("CRITICAL - Cannot initiate SSL handshake.\n"));
1297 }
1298 SSL_free (ssl);
1299 }
1300
1301 SSL_CTX_free (ctx);
1302 close (sd);
1303
1304 return STATE_CRITICAL;
1305}
1306#endif
1307
1308
1309
1310#ifdef USE_OPENSSL
1311int
1312check_certificate (X509 ** certificate)
1313{
1314 ASN1_STRING *tm;
1315 int offset;
1316 struct tm stamp;
1317 int days_left;
1318
1319
1320 /* Retrieve timestamp of certificate */
1321 tm = X509_get_notAfter (*certificate);
1322
1323 /* Generate tm structure to process timestamp */
1324 if (tm->type == V_ASN1_UTCTIME) {
1325 if (tm->length < 10) {
1326 printf (_("CRITICAL - Wrong time format in certificate.\n"));
1327 return STATE_CRITICAL;
1328 }
1329 else {
1330 stamp.tm_year = (tm->data[0] - '0') * 10 + (tm->data[1] - '0');
1331 if (stamp.tm_year < 50)
1332 stamp.tm_year += 100;
1333 offset = 0;
1334 }
1335 }
1336 else {
1337 if (tm->length < 12) {
1338 printf (_("CRITICAL - Wrong time format in certificate.\n"));
1339 return STATE_CRITICAL;
1340 }
1341 else {
1342 stamp.tm_year =
1343 (tm->data[0] - '0') * 1000 + (tm->data[1] - '0') * 100 +
1344 (tm->data[2] - '0') * 10 + (tm->data[3] - '0');
1345 stamp.tm_year -= 1900;
1346 offset = 2;
1347 }
1348 }
1349 stamp.tm_mon =
1350 (tm->data[2 + offset] - '0') * 10 + (tm->data[3 + offset] - '0') - 1;
1351 stamp.tm_mday =
1352 (tm->data[4 + offset] - '0') * 10 + (tm->data[5 + offset] - '0');
1353 stamp.tm_hour =
1354 (tm->data[6 + offset] - '0') * 10 + (tm->data[7 + offset] - '0');
1355 stamp.tm_min =
1356 (tm->data[8 + offset] - '0') * 10 + (tm->data[9 + offset] - '0');
1357 stamp.tm_sec = 0;
1358 stamp.tm_isdst = -1;
1359
1360 days_left = (mktime (&stamp) - time (NULL)) / 86400;
1361 snprintf
1362 (timestamp, 17, "%02d/%02d/%04d %02d:%02d",
1363 stamp.tm_mon + 1,
1364 stamp.tm_mday, stamp.tm_year + 1900, stamp.tm_hour, stamp.tm_min);
1365
1366 if (days_left > 0 && days_left <= days_till_exp) {
1367 printf (_("WARNING - Certificate expires in %d day(s) (%s).\n"), days_left, timestamp);
1368 return STATE_WARNING;
1369 }
1370 if (days_left < 0) {
1371 printf (_("CRITICAL - Certificate expired on %s.\n"), timestamp);
1372 return STATE_CRITICAL;
1373 }
1374
1375 if (days_left == 0) {
1376 printf (_("WARNING - Certificate expires today (%s).\n"), timestamp);
1377 return STATE_WARNING;
1378 }
1379
1380 printf (_("OK - Certificate will expire on %s.\n"), timestamp);
1381
1382 return STATE_OK;
1383}
1384#endif
1385
1386
1387
1388char *perfd_time (double elapsed_time) 1190char *perfd_time (double elapsed_time)
1389{ 1191{
1390 return fperfdata ("time", elapsed_time, "s", 1192 return fperfdata ("time", elapsed_time, "s",
@@ -1403,47 +1205,6 @@ char *perfd_size (int page_len)
1403 TRUE, 0, FALSE, 0); 1205 TRUE, 0, FALSE, 0);
1404} 1206}
1405 1207
1406
1407
1408int
1409my_recv (void)
1410{
1411 int i;
1412#ifdef HAVE_SSL
1413 if (use_ssl) {
1414 i = SSL_read (ssl, buffer, MAX_INPUT_BUFFER - 1);
1415 }
1416 else {
1417 i = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0);
1418 }
1419#else
1420 i = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0);
1421#endif
1422 return i;
1423}
1424
1425
1426
1427int
1428my_close (void)
1429{
1430#ifdef HAVE_SSL
1431 if (use_ssl == TRUE) {
1432 SSL_shutdown (ssl);
1433 SSL_free (ssl);
1434 SSL_CTX_free (ctx);
1435 return 0;
1436 }
1437 else {
1438#endif
1439 return close (sd);
1440#ifdef HAVE_SSL
1441 }
1442#endif
1443}
1444
1445
1446
1447void 1208void
1448print_help (void) 1209print_help (void)
1449{ 1210{