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-rw-r--r--plugins/sslutils.c113
1 files changed, 88 insertions, 25 deletions
diff --git a/plugins/sslutils.c b/plugins/sslutils.c
index f34c3d7..4f9c793 100644
--- a/plugins/sslutils.c
+++ b/plugins/sslutils.c
@@ -49,33 +49,78 @@ int np_net_ssl_init_with_hostname_and_version(int sd, char *host_name, int versi
49 49
50int np_net_ssl_init_with_hostname_version_and_cert(int sd, char *host_name, int version, char *cert, char *privkey) { 50int np_net_ssl_init_with_hostname_version_and_cert(int sd, char *host_name, int version, char *cert, char *privkey) {
51 SSL_METHOD *method = NULL; 51 SSL_METHOD *method = NULL;
52 long options = 0;
52 53
53 switch (version) { 54 switch (version) {
54 case 0: /* Deafult to auto negotiation */ 55 case MP_SSLv2: /* SSLv2 protocol */
55 method = SSLv23_client_method();
56 break;
57 case 1: /* TLSv1 protocol */
58 method = TLSv1_client_method();
59 break;
60 case 2: /* SSLv2 protocol */
61#if defined(USE_GNUTLS) || defined(OPENSSL_NO_SSL2) 56#if defined(USE_GNUTLS) || defined(OPENSSL_NO_SSL2)
62 printf("%s\n", _("CRITICAL - SSL protocol version 2 is not supported by your SSL library.")); 57 printf("%s\n", _("UNKNOWN - SSL protocol version 2 is not supported by your SSL library."));
63 return STATE_CRITICAL; 58 return STATE_UNKNOWN;
64#else 59#else
65 method = SSLv2_client_method(); 60 method = SSLv2_client_method();
66#endif
67 break; 61 break;
68 case 3: /* SSLv3 protocol */ 62#endif
63 case MP_SSLv3: /* SSLv3 protocol */
69#if defined(OPENSSL_NO_SSL3) 64#if defined(OPENSSL_NO_SSL3)
70 printf("%s\n", _("CRITICAL - SSL protocol version 3 is not supported by your SSL library.")); 65 printf("%s\n", _("UNKNOWN - SSL protocol version 3 is not supported by your SSL library."));
71 return STATE_CRITICAL; 66 return STATE_UNKNOWN;
72#else 67#else
73 method = SSLv3_client_method(); 68 method = SSLv3_client_method();
69 break;
74#endif 70#endif
71 case MP_TLSv1: /* TLSv1 protocol */
72#if defined(OPENSSL_NO_TLS1)
73 printf("%s\n", _("UNKNOWN - TLS protocol version 1 is not supported by your SSL library."));
74 return STATE_UNKNOWN;
75#else
76 method = TLSv1_client_method();
75 break; 77 break;
76 default: /* Unsupported */ 78#endif
77 printf("%s\n", _("CRITICAL - Unsupported SSL protocol version.")); 79 case MP_TLSv1_1: /* TLSv1.1 protocol */
78 return STATE_CRITICAL; 80#if !defined(SSL_OP_NO_TLSv1_1)
81 printf("%s\n", _("UNKNOWN - TLS protocol version 1.1 is not supported by your SSL library."));
82 return STATE_UNKNOWN;
83#else
84 method = TLSv1_1_client_method();
85 break;
86#endif
87 case MP_TLSv1_2: /* TLSv1.2 protocol */
88#if !defined(SSL_OP_NO_TLSv1_2)
89 printf("%s\n", _("UNKNOWN - TLS protocol version 1.2 is not supported by your SSL library."));
90 return STATE_UNKNOWN;
91#else
92 method = TLSv1_2_client_method();
93 break;
94#endif
95 case MP_TLSv1_2_OR_NEWER:
96#if !defined(SSL_OP_NO_TLSv1_1)
97 printf("%s\n", _("UNKNOWN - Disabling TLSv1.1 is not supported by your SSL library."));
98 return STATE_UNKNOWN;
99#else
100 options |= SSL_OP_NO_TLSv1_1;
101#endif
102 /* FALLTHROUGH */
103 case MP_TLSv1_1_OR_NEWER:
104#if !defined(SSL_OP_NO_TLSv1)
105 printf("%s\n", _("UNKNOWN - Disabling TLSv1 is not supported by your SSL library."));
106 return STATE_UNKNOWN;
107#else
108 options |= SSL_OP_NO_TLSv1;
109#endif
110 /* FALLTHROUGH */
111 case MP_TLSv1_OR_NEWER:
112#if defined(SSL_OP_NO_SSLv3)
113 options |= SSL_OP_NO_SSLv3;
114#endif
115 /* FALLTHROUGH */
116 case MP_SSLv3_OR_NEWER:
117#if defined(SSL_OP_NO_SSLv2)
118 options |= SSL_OP_NO_SSLv2;
119#endif
120 case MP_SSLv2_OR_NEWER:
121 /* FALLTHROUGH */
122 default: /* Default to auto negotiation */
123 method = SSLv23_client_method();
79 } 124 }
80 if (!initialized) { 125 if (!initialized) {
81 /* Initialize SSL context */ 126 /* Initialize SSL context */
@@ -99,8 +144,9 @@ int np_net_ssl_init_with_hostname_version_and_cert(int sd, char *host_name, int
99#endif 144#endif
100 } 145 }
101#ifdef SSL_OP_NO_TICKET 146#ifdef SSL_OP_NO_TICKET
102 SSL_CTX_set_options(c, SSL_OP_NO_TICKET); 147 options |= SSL_OP_NO_TICKET;
103#endif 148#endif
149 SSL_CTX_set_options(c, options);
104 SSL_CTX_set_mode(c, SSL_MODE_AUTO_RETRY); 150 SSL_CTX_set_mode(c, SSL_MODE_AUTO_RETRY);
105 if ((s = SSL_new(c)) != NULL) { 151 if ((s = SSL_new(c)) != NULL) {
106#ifdef SSL_set_tlsext_host_name 152#ifdef SSL_set_tlsext_host_name
@@ -149,7 +195,9 @@ int np_net_ssl_check_cert(int days_till_exp_warn, int days_till_exp_crit){
149# ifdef USE_OPENSSL 195# ifdef USE_OPENSSL
150 X509 *certificate=NULL; 196 X509 *certificate=NULL;
151 X509_NAME *subj=NULL; 197 X509_NAME *subj=NULL;
198 char timestamp[50] = "";
152 char cn[MAX_CN_LENGTH]= ""; 199 char cn[MAX_CN_LENGTH]= "";
200
153 int cnlen =-1; 201 int cnlen =-1;
154 int status=STATE_UNKNOWN; 202 int status=STATE_UNKNOWN;
155 203
@@ -158,7 +206,7 @@ int np_net_ssl_check_cert(int days_till_exp_warn, int days_till_exp_crit){
158 struct tm stamp; 206 struct tm stamp;
159 float time_left; 207 float time_left;
160 int days_left; 208 int days_left;
161 char timestamp[50] = ""; 209 int time_remaining;
162 time_t tm_t; 210 time_t tm_t;
163 211
164 certificate=SSL_get_peer_certificate(s); 212 certificate=SSL_get_peer_certificate(s);
@@ -212,7 +260,8 @@ int np_net_ssl_check_cert(int days_till_exp_warn, int days_till_exp_crit){
212 (tm->data[6 + offset] - '0') * 10 + (tm->data[7 + offset] - '0'); 260 (tm->data[6 + offset] - '0') * 10 + (tm->data[7 + offset] - '0');
213 stamp.tm_min = 261 stamp.tm_min =
214 (tm->data[8 + offset] - '0') * 10 + (tm->data[9 + offset] - '0'); 262 (tm->data[8 + offset] - '0') * 10 + (tm->data[9 + offset] - '0');
215 stamp.tm_sec = 0; 263 stamp.tm_sec =
264 (tm->data[10 + offset] - '0') * 10 + (tm->data[11 + offset] - '0');
216 stamp.tm_isdst = -1; 265 stamp.tm_isdst = -1;
217 266
218 time_left = difftime(timegm(&stamp), time(NULL)); 267 time_left = difftime(timegm(&stamp), time(NULL));
@@ -223,21 +272,35 @@ int np_net_ssl_check_cert(int days_till_exp_warn, int days_till_exp_crit){
223 if (days_left > 0 && days_left <= days_till_exp_warn) { 272 if (days_left > 0 && days_left <= days_till_exp_warn) {
224 printf (_("%s - Certificate '%s' expires in %d day(s) (%s).\n"), (days_left>days_till_exp_crit)?"WARNING":"CRITICAL", cn, days_left, timestamp); 273 printf (_("%s - Certificate '%s' expires in %d day(s) (%s).\n"), (days_left>days_till_exp_crit)?"WARNING":"CRITICAL", cn, days_left, timestamp);
225 if (days_left > days_till_exp_crit) 274 if (days_left > days_till_exp_crit)
226 return STATE_WARNING; 275 status = STATE_WARNING;
227 else 276 else
228 return STATE_CRITICAL; 277 status = STATE_CRITICAL;
278 } else if (days_left == 0 && time_left > 0) {
279 if (time_left >= 3600)
280 time_remaining = (int) time_left / 3600;
281 else
282 time_remaining = (int) time_left / 60;
283
284 printf (_("%s - Certificate '%s' expires in %u %s (%s)\n"),
285 (days_left>days_till_exp_crit) ? "WARNING" : "CRITICAL", cn, time_remaining,
286 time_left >= 3600 ? "hours" : "minutes", timestamp);
287
288 if ( days_left > days_till_exp_crit)
289 status = STATE_WARNING;
290 else
291 status = STATE_CRITICAL;
229 } else if (time_left < 0) { 292 } else if (time_left < 0) {
230 printf(_("CRITICAL - Certificate '%s' expired on %s.\n"), cn, timestamp); 293 printf(_("CRITICAL - Certificate '%s' expired on %s.\n"), cn, timestamp);
231 status=STATE_CRITICAL; 294 status=STATE_CRITICAL;
232 } else if (days_left == 0) { 295 } else if (days_left == 0) {
233 printf (_("%s - Certificate '%s' expires today (%s).\n"), (days_left>days_till_exp_crit)?"WARNING":"CRITICAL", cn, timestamp); 296 printf (_("%s - Certificate '%s' just expired (%s).\n"), (days_left>days_till_exp_crit)?"WARNING":"CRITICAL", cn, timestamp);
234 if (days_left > days_till_exp_crit) 297 if (days_left > days_till_exp_crit)
235 return STATE_WARNING; 298 status = STATE_WARNING;
236 else 299 else
237 return STATE_CRITICAL; 300 status = STATE_CRITICAL;
238 } else { 301 } else {
239 printf(_("OK - Certificate '%s' will expire on %s.\n"), cn, timestamp); 302 printf(_("OK - Certificate '%s' will expire on %s.\n"), cn, timestamp);
240 status=STATE_OK; 303 status = STATE_OK;
241 } 304 }
242 X509_free(certificate); 305 X509_free(certificate);
243 return status; 306 return status;