Merge branch 'master' into masterrefs/pull/1637/head

1 files changed, 228 insertions, 92 deletions

diff --git a/plugins/check_curl.c b/plugins/check_curl.c
index c37d45d..d0871c4 100644
--- a/plugins/check_curl.c
+++ b/plugins/check_curl.c
@@ -55,6 +55,7 @@ const char *email = "devel@monitoring-plugins.org";
 #include "uriparser/Uri.h"
 
 #include <arpa/inet.h>
+#include <netinet/in.h>
 
 #if defined(HAVE_SSL) && defined(USE_OPENSSL)
 #include <openssl/opensslv.h>
@@ -243,7 +244,7 @@ void curlhelp_freewritebuffer (curlhelp_write_curlbuf*);
 int curlhelp_initreadbuffer (curlhelp_read_curlbuf *, const char *, size_t);
 int curlhelp_buffer_read_callback (void *, size_t , size_t , void *);
 void curlhelp_freereadbuffer (curlhelp_read_curlbuf *);
-curlhelp_ssl_library curlhelp_get_ssl_library (CURL*);
+curlhelp_ssl_library curlhelp_get_ssl_library ();
 const char* curlhelp_get_ssl_library_string (curlhelp_ssl_library);
 int net_noopenssl_check_certificate (cert_ptr_union*, int, int);
 
@@ -296,6 +297,7 @@ main (int argc, char **argv)
 
 int verify_callback(int preverify_ok, X509_STORE_CTX *x509_ctx)
 {
+        (void) preverify_ok;
   /* TODO: we get all certificates of the chain, so which ones
    * should we test?
    * TODO: is the last certificate always the server certificate?
@@ -320,6 +322,8 @@ int verify_callback(int preverify_ok, X509_STORE_CTX *x509_ctx)
 
 CURLcode sslctxfun(CURL *curl, SSL_CTX *sslctx, void *parm)
 {
+        (void) curl; // ignore unused parameter
+        (void) parm; // ignore unused parameter
   SSL_CTX_set_verify(sslctx, SSL_VERIFY_PEER, verify_callback);
 
   return CURLE_OK;
@@ -374,8 +378,12 @@ void
 handle_curl_option_return_code (CURLcode res, const char* option)
 {
   if (res != CURLE_OK) {
-    snprintf (msg, DEFAULT_BUFFER_SIZE, _("Error while setting cURL option '%s': cURL returned %d - %s"),
-      option, res, curl_easy_strerror(res));
+                snprintf (msg,
+                        DEFAULT_BUFFER_SIZE,
+                        _("Error while setting cURL option '%s': cURL returned %d - %s"),
+                        option,
+                        res,
+                        curl_easy_strerror(res));
     die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
   }
 }
@@ -384,8 +392,11 @@ int
 lookup_host (const char *host, char *buf, size_t buflen)
 {
   struct addrinfo hints, *res, *result;
+  char addrstr[100];
+  size_t addrstr_len;
   int errcode;
   void *ptr;
+  size_t buflen_remaining = buflen - 1;
 
   memset (&hints, 0, sizeof (hints));
   hints.ai_family = address_family;
@@ -395,26 +406,40 @@ lookup_host (const char *host, char *buf, size_t buflen)
   errcode = getaddrinfo (host, NULL, &hints, &result);
   if (errcode != 0)
     return errcode;
-  
+
+  strcpy(buf, "");
   res = result;
 
   while (res) {
-  inet_ntop (res->ai_family, res->ai_addr->sa_data, buf, buflen);
-  switch (res->ai_family) {
-    case AF_INET:
-      ptr = &((struct sockaddr_in *) res->ai_addr)->sin_addr;
-      break;
-    case AF_INET6:
-      ptr = &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr;
-    break;
+    switch (res->ai_family) {
+      case AF_INET:
+        ptr = &((struct sockaddr_in *) res->ai_addr)->sin_addr;
+        break;
+      case AF_INET6:
+        ptr = &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr;
+        break;
     }
-    inet_ntop (res->ai_family, ptr, buf, buflen);
-    if (verbose >= 1)
+
+    inet_ntop (res->ai_family, ptr, addrstr, 100);
+    if (verbose >= 1) {
       printf ("* getaddrinfo IPv%d address: %s\n",
-        res->ai_family == PF_INET6 ? 6 : 4, buf);
+        res->ai_family == PF_INET6 ? 6 : 4, addrstr);
+    }
+
+    // Append all IPs to buf as a comma-separated string
+    addrstr_len = strlen(addrstr);
+    if (buflen_remaining > addrstr_len + 1) {
+      if (buf[0] != '\0') {
+        strncat(buf, ",", buflen_remaining);
+        buflen_remaining -= 1;
+      }
+      strncat(buf, addrstr, buflen_remaining);
+      buflen_remaining -= addrstr_len;
+    }
+
     res = res->ai_next;
   }
-  
+
   freeaddrinfo(result);
 
   return 0;
@@ -445,7 +470,7 @@ check_http (void)
   int i;
   char *force_host_header = NULL;
   struct curl_slist *host = NULL;
-  char addrstr[100];
+  char addrstr[DEFAULT_BUFFER_SIZE/2];
   char dnscache[DEFAULT_BUFFER_SIZE];
 
   /* initialize curl */
@@ -497,10 +522,14 @@ check_http (void)
 
   // fill dns resolve cache to make curl connect to the given server_address instead of the host_name, only required for ssl, because we use the host_name later on to make SNI happy
   if(use_ssl && host_name != NULL) {
-      if ( (res=lookup_host (server_address, addrstr, 100)) != 0) {
-        snprintf (msg, DEFAULT_BUFFER_SIZE, _("Unable to lookup IP address for '%s': getaddrinfo returned %d - %s"),
-          server_address, res, gai_strerror (res));
-        die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
+      if ( (res=lookup_host (server_address, addrstr, DEFAULT_BUFFER_SIZE/2)) != 0) {
+                                snprintf (msg,
+                                        DEFAULT_BUFFER_SIZE,
+                                        _("Unable to lookup IP address for '%s': getaddrinfo returned %d - %s"),
+                                        server_address,
+                                        res,
+                                        gai_strerror (res));
+                                die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
       }
       snprintf (dnscache, DEFAULT_BUFFER_SIZE, "%s:%d:%s", host_name, server_port, addrstr);
       host = curl_slist_append(NULL, dnscache);
@@ -524,7 +553,7 @@ check_http (void)
   /* compose URL: use the address we want to connect to, set Host: header later */
   snprintf (url, DEFAULT_BUFFER_SIZE, "%s://%s:%d%s",
       use_ssl ? "https" : "http",
-      use_ssl & host_name != NULL ? host_name : server_address,
+      ( use_ssl & ( host_name != NULL ) ) ? host_name : server_address,
       server_port,
       server_url
   );
@@ -600,7 +629,7 @@ check_http (void)
 
 #ifdef LIBCURL_FEATURE_SSL
 
-  /* set SSL version, warn about unsecure or unsupported versions */
+  /* set SSL version, warn about insecure or unsupported versions */
   if (use_ssl) {
     handle_curl_option_return_code (curl_easy_setopt (curl, CURLOPT_SSLVERSION, ssl_version), "CURLOPT_SSLVERSION");
   }
@@ -628,7 +657,7 @@ check_http (void)
   }
 
   /* detect SSL library used by libcurl */
-  ssl_library = curlhelp_get_ssl_library (curl);
+  ssl_library = curlhelp_get_ssl_library ();
 
   /* try hard to get a stack of certificates to verify against */
   if (check_cert) {
@@ -792,12 +821,19 @@ check_http (void)
   /* free header and server IP resolve lists, we don't need it anymore */
   curl_slist_free_all (header_list); header_list = NULL;
   curl_slist_free_all (server_ips); server_ips = NULL;
+  if (host) {
+    curl_slist_free_all (host); host = NULL;
+  }
 
   /* Curl errors, result in critical Nagios state */
   if (res != CURLE_OK) {
-    snprintf (msg, DEFAULT_BUFFER_SIZE, _("Invalid HTTP response received from host on port %d: cURL returned %d - %s"),
-      server_port, res, errbuf[0] ? errbuf : curl_easy_strerror(res));
-    die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
+                snprintf (msg,
+                        DEFAULT_BUFFER_SIZE,
+                        _("Invalid HTTP response received from host on port %d: cURL returned %d - %s"),
+                        server_port,
+                        res,
+                        errbuf[0] ? errbuf : curl_easy_strerror(res));
+                die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
   }
 
   /* certificate checks */
@@ -840,15 +876,19 @@ check_http (void)
           }
 GOT_FIRST_CERT:
           if (!raw_cert) {
-            snprintf (msg, DEFAULT_BUFFER_SIZE, _("Cannot retrieve certificates from CERTINFO information - certificate data was empty"));
-            die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
+                                                snprintf (msg,
+                                                        DEFAULT_BUFFER_SIZE,
+                                                        _("Cannot retrieve certificates from CERTINFO information - certificate data was empty"));
+                                                die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
           }
           BIO* cert_BIO = BIO_new (BIO_s_mem());
           BIO_write (cert_BIO, raw_cert, strlen(raw_cert));
           cert = PEM_read_bio_X509 (cert_BIO, NULL, NULL, NULL);
           if (!cert) {
-            snprintf (msg, DEFAULT_BUFFER_SIZE, _("Cannot read certificate from CERTINFO information - BIO error"));
-            die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
+                                                snprintf (msg,
+                                                        DEFAULT_BUFFER_SIZE,
+                                                        _("Cannot read certificate from CERTINFO information - BIO error"));
+                                                die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
           }
           BIO_free (cert_BIO);
           result = np_net_ssl_check_certificate(cert, days_till_exp_warn, days_till_exp_crit);
@@ -865,9 +905,12 @@ GOT_FIRST_CERT:
           }
 #endif /* USE_OPENSSL */
         } else {
-          snprintf (msg, DEFAULT_BUFFER_SIZE, _("Cannot retrieve certificates - cURL returned %d - %s"),
-            res, curl_easy_strerror(res));
-          die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
+                                        snprintf (msg,
+                                                DEFAULT_BUFFER_SIZE,
+                                                _("Cannot retrieve certificates - cURL returned %d - %s"),
+                                                res,
+                                                curl_easy_strerror(res));
+                                        die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
         }
       }
     }
@@ -906,8 +949,11 @@ GOT_FIRST_CERT:
 
   /* get status line of answer, check sanity of HTTP code */
   if (curlhelp_parse_statusline (header_buf.buf, &status_line) < 0) {
-    snprintf (msg, DEFAULT_BUFFER_SIZE, "Unparsable status line in %.3g seconds response time|%s\n",
-      total_time, perfstring);
+                snprintf (msg,
+                        DEFAULT_BUFFER_SIZE,
+                        "Unparsable status line in %.3g seconds response time|%s\n",
+                        total_time,
+                        perfstring);
     /* we cannot know the major/minor version here for sure as we cannot parse the first line */
     die (STATE_CRITICAL, "HTTP CRITICAL HTTP/x.x %ld unknown - %s", code, msg);
   }
@@ -927,9 +973,16 @@ GOT_FIRST_CERT:
   /* make sure the status line matches the response we are looking for */
   if (!expected_statuscode(status_line.first_line, server_expect)) {
     if (server_port == HTTP_PORT)
-      snprintf(msg, DEFAULT_BUFFER_SIZE, _("Invalid HTTP response received from host: %s\n"), status_line.first_line);
+                        snprintf(msg,
+                                DEFAULT_BUFFER_SIZE,
+                                _("Invalid HTTP response received from host: %s\n"),
+                                status_line.first_line);
     else
-      snprintf(msg, DEFAULT_BUFFER_SIZE, _("Invalid HTTP response received from host on port %d: %s\n"), server_port, status_line.first_line);
+                        snprintf(msg,
+                                        DEFAULT_BUFFER_SIZE,
+                                        _("Invalid HTTP response received from host on port %d: %s\n"),
+                                        server_port,
+                                        status_line.first_line);
     die (STATE_CRITICAL, "HTTP CRITICAL - %s%s%s", msg,
       show_body ? "\n" : "",
       show_body ? body_buf.buf : "");
@@ -965,7 +1018,7 @@ GOT_FIRST_CERT:
         }
       } else {
         /* this is a specific code in the command line to
-         * be returned when a redirection is encoutered
+         * be returned when a redirection is encountered
          */
       }
       result = max_state_alt (onredirect, result);
@@ -1002,23 +1055,55 @@ GOT_FIRST_CERT:
 
   if (strlen (header_expect)) {
     if (!strstr (header_buf.buf, header_expect)) {
+
       strncpy(&output_header_search[0],header_expect,sizeof(output_header_search));
+
       if(output_header_search[sizeof(output_header_search)-1]!='\0') {
         bcopy("...",&output_header_search[sizeof(output_header_search)-4],4);
       }
-      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);
-      result = STATE_CRITICAL;
+
+                                char tmp[DEFAULT_BUFFER_SIZE];
+
+                                snprintf (tmp,
+                                        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);
+
+                                strcpy(msg, tmp);
+
+                                result = STATE_CRITICAL;
     }
   }
 
   if (strlen (string_expect)) {
     if (!strstr (body_buf.buf, string_expect)) {
+
       strncpy(&output_string_search[0],string_expect,sizeof(output_string_search));
+
       if(output_string_search[sizeof(output_string_search)-1]!='\0') {
         bcopy("...",&output_string_search[sizeof(output_string_search)-4],4);
       }
-      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);
-      result = STATE_CRITICAL;
+
+                        char tmp[DEFAULT_BUFFER_SIZE];
+
+                        snprintf (tmp,
+                                        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);
+
+                        strcpy(msg, tmp);
+
+                        result = STATE_CRITICAL;
     }
   }
 
@@ -1029,27 +1114,48 @@ GOT_FIRST_CERT:
       result = max_state_alt(STATE_OK, result);
     }
     else if ((errcode == REG_NOMATCH && !invert_regex) || (errcode == 0 && invert_regex)) {
-      if (!invert_regex)
-        snprintf (msg, DEFAULT_BUFFER_SIZE, _("%spattern not found, "), msg);
-      else
-        snprintf (msg, DEFAULT_BUFFER_SIZE, _("%spattern found, "), msg);
-      result = STATE_CRITICAL;
-    }
-    else {
-      regerror (errcode, &preg, errbuf, MAX_INPUT_BUFFER);
-      snprintf (msg, DEFAULT_BUFFER_SIZE, _("%sExecute Error: %s, "), msg, errbuf);
-      result = STATE_UNKNOWN;
-    }
+                        if (!invert_regex) {
+                                char tmp[DEFAULT_BUFFER_SIZE];
+
+                                snprintf (tmp, DEFAULT_BUFFER_SIZE, _("%spattern not found, "), msg);
+                                strcpy(msg, tmp);
+
+                        } else {
+                                char tmp[DEFAULT_BUFFER_SIZE];
+
+                                snprintf (tmp, DEFAULT_BUFFER_SIZE, _("%spattern found, "), msg);
+                                strcpy(msg, tmp);
+
+                        }
+                        result = STATE_CRITICAL;
+                } else {
+                        regerror (errcode, &preg, errbuf, MAX_INPUT_BUFFER);
+
+                        char tmp[DEFAULT_BUFFER_SIZE];
+
+                        snprintf (tmp, DEFAULT_BUFFER_SIZE, _("%sExecute Error: %s, "), msg, errbuf);
+                        strcpy(msg, tmp);
+                        result = STATE_UNKNOWN;
+                }
   }
 
   /* make sure the page is of an appropriate size */
-  if ((max_page_len > 0) && (page_len > max_page_len)) {
-    snprintf (msg, DEFAULT_BUFFER_SIZE, _("%spage size %d too large, "), msg, page_len);
-    result = max_state_alt(STATE_WARNING, result);
-  } else if ((min_page_len > 0) && (page_len < min_page_len)) {
-    snprintf (msg, DEFAULT_BUFFER_SIZE, _("%spage size %d too small, "), msg, page_len);
-    result = max_state_alt(STATE_WARNING, result);
-  }
+        if ((max_page_len > 0) && (page_len > max_page_len)) {
+                char tmp[DEFAULT_BUFFER_SIZE];
+
+                snprintf (tmp, DEFAULT_BUFFER_SIZE, _("%spage size %d too large, "), msg, page_len);
+
+                strcpy(msg, tmp);
+
+                result = max_state_alt(STATE_WARNING, result);
+
+        } else if ((min_page_len > 0) && (page_len < min_page_len)) {
+                char tmp[DEFAULT_BUFFER_SIZE];
+
+                snprintf (tmp, DEFAULT_BUFFER_SIZE, _("%spage size %d too small, "), msg, page_len);
+                strcpy(msg, tmp);
+                result = max_state_alt(STATE_WARNING, result);
+        }
 
   /* -w, -c: check warning and critical level */
   result = max_state_alt(get_status(total_time, thlds), result);
@@ -1633,6 +1739,7 @@ process_arguments (int argc, char **argv)
       break;
     case 'R': /* regex */
       cflags |= REG_ICASE;
+                        // fall through
     case 'r': /* regex */
       strncpy (regexp, optarg, MAX_RE_SIZE - 1);
       regexp[MAX_RE_SIZE - 1] = 0;
@@ -2030,7 +2137,7 @@ print_usage (void)
   printf (" %s -H <vhost> | -I <IP-address> [-u <uri>] [-p <port>]\n",progname);
   printf ("       [-J <client certificate file>] [-K <private key>] [--ca-cert <CA certificate file>] [-D]\n");
   printf ("       [-w <warn time>] [-c <critical time>] [-t <timeout>] [-L] [-E] [-a auth]\n");
-  printf ("       [-b proxy_auth] [-f <ok|warning|critcal|follow|sticky|stickyport|curl>]\n");
+  printf ("       [-b proxy_auth] [-f <ok|warning|critical|follow|sticky|stickyport|curl>]\n");
   printf ("       [-e <expect>] [-d string] [-s string] [-l] [-r <regex> | -R <case-insensitive regex>]\n");
   printf ("       [-P string] [-m <min_pg_size>:<max_pg_size>] [-4|-6] [-N] [-M <age>]\n");
   printf ("       [-A string] [-k string] [-S <version>] [--sni]\n");
@@ -2196,11 +2303,10 @@ curlhelp_parse_statusline (const char *buf, curlhelp_statusline *status_line)
   if( strchr( p, '.' ) != NULL ) {
 
     /* HTTP 1.x case */
-    char *ppp;
-    ppp = strtok( p, "." );
+    strtok( p, "." );
     status_line->http_major = (int)strtol( p, &pp, 10 );
     if( *pp != '\0' ) { free( first_line_buf ); return -1; }
-    ppp = strtok( NULL, " " );
+    strtok( NULL, " " );
     status_line->http_minor = (int)strtol( p, &pp, 10 );
     if( *pp != '\0' ) { free( first_line_buf ); return -1; }
     p += 4; /* 1.x SP */
@@ -2287,37 +2393,67 @@ check_document_dates (const curlhelp_write_curlbuf *header_buf, char (*msg)[DEFA
   server_date = get_header_value (headers, nof_headers, "date");
   document_date = get_header_value (headers, nof_headers, "last-modified");
 
-  if (!server_date || !*server_date) {
-    snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sServer date unknown, "), *msg);
-    date_result = max_state_alt(STATE_UNKNOWN, date_result);
-  } else if (!document_date || !*document_date) {
-    snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sDocument modification date unknown, "), *msg);
-    date_result = max_state_alt(STATE_CRITICAL, date_result);
+        if (!server_date || !*server_date) {
+                char tmp[DEFAULT_BUFFER_SIZE];
+
+                snprintf (tmp, DEFAULT_BUFFER_SIZE, _("%sServer date unknown, "), *msg);
+                strcpy(*msg, tmp);
+
+                date_result = max_state_alt(STATE_UNKNOWN, date_result);
+
+        } else if (!document_date || !*document_date) {
+                char tmp[DEFAULT_BUFFER_SIZE];
+
+                snprintf (tmp, DEFAULT_BUFFER_SIZE, _("%sDocument modification date unknown, "), *msg);
+                strcpy(*msg, tmp);
+
+                date_result = max_state_alt(STATE_CRITICAL, date_result);
+
   } else {
     time_t srv_data = curl_getdate (server_date, NULL);
     time_t doc_data = curl_getdate (document_date, NULL);
     if (verbose >= 2)
       printf ("* server date: '%s' (%d), doc_date: '%s' (%d)\n", server_date, (int)srv_data, document_date, (int)doc_data);
-    if (srv_data <= 0) {
-      snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sServer date \"%100s\" unparsable, "), *msg, server_date);
-      date_result = max_state_alt(STATE_CRITICAL, date_result);
-    } else if (doc_data <= 0) {
-      snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sDocument date \"%100s\" unparsable, "), *msg, document_date);
-      date_result = max_state_alt(STATE_CRITICAL, date_result);
-    } else if (doc_data > srv_data + 30) {
-      snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sDocument is %d seconds in the future, "), *msg, (int)doc_data - (int)srv_data);
-      date_result = max_state_alt(STATE_CRITICAL, date_result);
-    } else if (doc_data < srv_data - maximum_age) {
-      int n = (srv_data - doc_data);
-      if (n > (60 * 60 * 24 * 2)) {
-        snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sLast modified %.1f days ago, "), *msg, ((float) n) / (60 * 60 * 24));
-        date_result = max_state_alt(STATE_CRITICAL, date_result);
-      } else {
-        snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sLast modified %d:%02d:%02d ago, "), *msg, n / (60 * 60), (n / 60) % 60, n % 60);
-        date_result = max_state_alt(STATE_CRITICAL, date_result);
-      }
-    }
-  }
+                if (srv_data <= 0) {
+                        char tmp[DEFAULT_BUFFER_SIZE];
+
+                        snprintf (tmp, DEFAULT_BUFFER_SIZE, _("%sServer date \"%100s\" unparsable, "), *msg, server_date);
+                        strcpy(*msg, tmp);
+
+                        date_result = max_state_alt(STATE_CRITICAL, date_result);
+                } else if (doc_data <= 0) {
+                        char tmp[DEFAULT_BUFFER_SIZE];
+
+                        snprintf (tmp, DEFAULT_BUFFER_SIZE, _("%sDocument date \"%100s\" unparsable, "), *msg, document_date);
+                        strcpy(*msg, tmp);
+
+                        date_result = max_state_alt(STATE_CRITICAL, date_result);
+                } else if (doc_data > srv_data + 30) {
+                        char tmp[DEFAULT_BUFFER_SIZE];
+
+                        snprintf (tmp, DEFAULT_BUFFER_SIZE, _("%sDocument is %d seconds in the future, "), *msg, (int)doc_data - (int)srv_data);
+                        strcpy(*msg, tmp);
+
+                        date_result = max_state_alt(STATE_CRITICAL, date_result);
+                } else if (doc_data < srv_data - maximum_age) {
+                        int n = (srv_data - doc_data);
+                        if (n > (60 * 60 * 24 * 2)) {
+                                char tmp[DEFAULT_BUFFER_SIZE];
+
+                                snprintf (tmp, DEFAULT_BUFFER_SIZE, _("%sLast modified %.1f days ago, "), *msg, ((float) n) / (60 * 60 * 24));
+                        strcpy(*msg, tmp);
+
+                                date_result = max_state_alt(STATE_CRITICAL, date_result);
+                        } else {
+                                char tmp[DEFAULT_BUFFER_SIZE];
+
+                                snprintf (tmp, DEFAULT_BUFFER_SIZE, _("%sLast modified %d:%02d:%02d ago, "), *msg, n / (60 * 60), (n / 60) % 60, n % 60);
+                                strcpy(*msg, tmp);
+
+                                date_result = max_state_alt(STATE_CRITICAL, date_result);
+                        }
+                }
+        }
 
   if (server_date) free (server_date);
   if (document_date) free (document_date);
@@ -2359,7 +2495,7 @@ get_content_length (const curlhelp_write_curlbuf* header_buf, const curlhelp_wri
 
 /* TODO: is there a better way in libcurl to check for the SSL library? */
 curlhelp_ssl_library
-curlhelp_get_ssl_library (CURL* curl)
+curlhelp_get_ssl_library ()
 {
   curl_version_info_data* version_data;
   char *ssl_version;