starttls support for check_smtp #1041576

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1065 f882894a-f735-0410-b71e-b25c423dba1c

diff --git a/plugins/Makefile.am b/plugins/Makefile.am
index 538f90579e1c0b2cff4f2931460b1e6780330666..51858215b5dda17bca4ff1b0b3016b65601c427a 100644 (file)
--- a/plugins/Makefile.am
+++ b/plugins/Makefile.am
@@ -69,7 +69,7 @@ check_procs_LDADD = $(BASEOBJS) popen.o
 check_radius_LDADD = $(NETLIBS) $(RADIUSLIBS)
 check_real_LDADD = $(NETLIBS)
 check_snmp_LDADD = $(BASEOBJS) popen.o
-check_smtp_LDADD = $(NETLIBS)
+check_smtp_LDADD = $(NETLIBS) $(SSLLIBS)
 check_ssh_LDADD = $(NETLIBS)
 check_swap_LDADD = $(BASEOBJS) popen.o
 check_tcp_LDADD = $(NETLIBS) $(SSLLIBS)

diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c
index 55cf5da567ad4efba2b4213bddd7b866dd7d4141..6e5d972a86ed8e62a84601e7ee484ca6f1cba550 100644 (file)
--- a/plugins/check_smtp.c
+++ b/plugins/check_smtp.c
@@ -27,17 +27,49 @@ const char *email = "nagiosplug-devel@lists.sourceforge.net";
 #include "netutils.h"
 #include "utils.h"
 
+#ifdef HAVE_SSL_H
+#  include <rsa.h>
+#  include <crypto.h>
+#  include <x509.h>
+#  include <pem.h>
+#  include <ssl.h>
+#  include <err.h>
+#else
+#  ifdef HAVE_OPENSSL_SSL_H
+#    include <openssl/rsa.h>
+#    include <openssl/crypto.h>
+#    include <openssl/x509.h>
+#    include <openssl/pem.h>
+#    include <openssl/ssl.h>
+#    include <openssl/err.h>
+#  endif
+#endif
+
+#ifdef HAVE_SSL
+
+int check_cert = FALSE;
+int days_till_exp;
+SSL_CTX *ctx;
+SSL *ssl;
+X509 *server_cert;
+int connect_STARTTLS (void);
+int check_certificate (X509 **);
+#endif
+
 enum {
        SMTP_PORT       = 25
 };
 const char *SMTP_EXPECT = "220";
 const char *SMTP_HELO = "HELO ";
 const char *SMTP_QUIT  = "QUIT\r\n";
+const char *SMTP_STARTTLS = "STARTTLS\r\n";
 
 int process_arguments (int, char **);
 int validate_arguments (void);
 void print_help (void);
 void print_usage (void);
+int myrecv(void);
+int my_close(void);
 
 #ifdef HAVE_REGEX_H
 #include <regex.h>
@@ -68,18 +100,23 @@ int check_warning_time = FALSE;
 int critical_time = 0;
 int check_critical_time = FALSE;
 int verbose = 0;
-
-
+int use_ssl = FALSE;
+int sd;
+char buffer[MAX_INPUT_BUFFER];
+enum {
+  TCP_PROTOCOL = 1,
+  UDP_PROTOCOL = 2,
+  MAXBUF = 1024
+};
 
 int
 main (int argc, char **argv)
 {
-       int sd;
+
        int n = 0;
        double elapsed_time;
        long microsec;
        int result = STATE_UNKNOWN;
-       char buffer[MAX_INPUT_BUFFER];
        char *cmd_str = NULL;
        char *helocmd = NULL;
        struct timeval tv;
@@ -140,12 +177,45 @@ main (int argc, char **argv)
                                result = STATE_WARNING;
                        }
                }
-
+#ifdef HAVE_SSL
+               if(use_ssl) {
+                 /* send the STARTTLS command */
+                 send(sd, SMTP_STARTTLS, strlen(SMTP_STARTTLS), 0);
+
+                 recv(sd,buffer, MAX_INPUT_BUFFER-1, 0); // wait for it
+                 if (!strstr (buffer, server_expect)) {
+                   printf (_("Server does not support STARTTLS\n"));
+                   return STATE_UNKNOWN;
+                 }
+                 if(connect_STARTTLS() != OK) {
+                   printf (_("ERROR: Cannot create SSL context.\n"));
+                   return STATE_CRITICAL;
+                 }
+                 if ( check_cert ) {
+                   if ((server_cert = SSL_get_peer_certificate (ssl)) != NULL) {
+                     result = check_certificate (&server_cert);
+                     X509_free(server_cert);
+                   }
+                   else {
+                     printf (_("ERROR: Cannot retrieve server certificate.\n"));
+                     result = STATE_CRITICAL;
+                             
+                   }
+                   my_close();
+                   return result;
+                 }
+               }
+#endif
                /* send the HELO command */
+#ifdef HAVE_SSL
+               if (use_ssl)
+                 SSL_write(ssl, helocmd, strlen(helocmd));
+               else
+#endif
                send(sd, helocmd, strlen(helocmd), 0);
 
                /* allow for response to helo command to reach us */
-               recv(sd, buffer, MAX_INPUT_BUFFER-1, 0);
+               myrecv();
                                
                /* sendmail will syslog a "NOQUEUE" error if session does not attempt
                 * to do something useful. This can be prevented by giving a command
@@ -158,16 +228,26 @@ main (int argc, char **argv)
                 * Use the -f option to provide a FROM address
                 */
                if (smtp_use_dummycmd) {
-                       send(sd, cmd_str, strlen(cmd_str), 0);
-                       recv(sd, buffer, MAX_INPUT_BUFFER-1, 0);
-                       if (verbose) 
-                               printf("%s", buffer);
+#ifdef HAVE_SSL
+                 if (use_ssl)
+                   SSL_write(ssl, cmd_str, strlen(cmd_str));
+                 else
+#endif
+                 send(sd, cmd_str, strlen(cmd_str), 0);
+                 myrecv();
+                 if (verbose) 
+                   printf("%s", buffer);
                }
 
                while (n < ncommands) {
                        asprintf (&cmd_str, "%s%s", commands[n], "\r\n");
+#ifdef HAVE_SSL
+                       if (use_ssl)
+                         SSL_write(ssl,cmd_str, strlen(cmd_str));
+                       else
+#endif
                        send(sd, cmd_str, strlen(cmd_str), 0);
-                       recv(sd, buffer, MAX_INPUT_BUFFER-1, 0);
+                       myrecv();
                        if (verbose) 
                                printf("%s", buffer);
                        strip (buffer);
@@ -206,6 +286,11 @@ main (int argc, char **argv)
                }
 
                /* tell the server we're done */
+#ifdef HAVE_SSL
+               if (use_ssl)
+                 SSL_write(ssl,SMTP_QUIT, strlen (SMTP_QUIT));
+               else
+#endif
                send (sd, SMTP_QUIT, strlen (SMTP_QUIT), 0);
 
                /* finally close the connection */
@@ -261,6 +346,8 @@ process_arguments (int argc, char **argv)
                {"use-ipv4", no_argument, 0, '4'},
                {"use-ipv6", no_argument, 0, '6'},
                {"help", no_argument, 0, 'h'},
+               {"starttls",no_argument,0,'S'},
+               {"certificate",required_argument,0,'D'},
                {0, 0, 0, 0}
        };
 
@@ -277,7 +364,7 @@ process_arguments (int argc, char **argv)
        }
 
        while (1) {
-               c = getopt_long (argc, argv, "+hVv46t:p:f:e:c:w:H:C:R:",
+               c = getopt_long (argc, argv, "+hVv46t:p:f:e:c:w:H:C:R:SD:",
                                 longopts, &option);
 
                if (c == -1 || c == EOF)
@@ -354,6 +441,22 @@ process_arguments (int argc, char **argv)
                                usage4 (_("Timeout interval must be a positive integer"));
                        }
                        break;
+               case 'S':
+               /* starttls */
+                       use_ssl = TRUE;
+                       break;
+               case 'D':
+               /* Check SSL cert validity */
+#ifdef HAVE_SSL
+                       if (!is_intnonneg (optarg))
+                               usage2 ("Invalid certificate expiration period",optarg);
+                               days_till_exp = atoi (optarg);
+                               check_cert = TRUE;
+#else
+                               terminate (STATE_UNKNOWN,
+                                               "SSL support not available.  Install OpenSSL and recompile.");
+#endif
+                       break;
                case '4':
                        address_family = AF_INET;
                        break;
@@ -443,6 +546,13 @@ print_help (void)
  -f, --from=STRING\n\
    FROM-address to include in MAIL command, required by Exchange 2000\n"),
                SMTP_EXPECT);
+#ifdef HAVE_SSL
+        printf (_("\
+ -D, --certificate=INTEGER\n\
+    Minimum number of days a certificate has to be valid.\n\
+ -S, --starttls\n\
+    Use STARTTLS for the connection.\n"));
+#endif
 
        printf (_(UT_WARN_CRIT));
 
@@ -466,5 +576,154 @@ print_usage (void)
 {
        printf ("\
 Usage: %s -H host [-p port] [-e expect] [-C command] [-f from addr]\n\
-                  [-w warn] [-c crit] [-t timeout] [-n] [-v] [-4|-6]\n", progname);
+                  [-w warn] [-c crit] [-t timeout] [-S] [-D days] [-n] [-v] [-4|-6]\n", progname);
+}
+
+#ifdef HAVE_SSL
+int
+connect_STARTTLS (void)
+{
+  SSL_METHOD *meth;
+
+  /* Initialize SSL context */
+  SSLeay_add_ssl_algorithms ();
+  meth = SSLv2_client_method ();
+  SSL_load_error_strings ();
+  if ((ctx = SSL_CTX_new (meth)) == NULL)
+    {
+      printf(_("ERROR: Cannot create SSL context.\n"));
+      return STATE_CRITICAL;
+    }
+  /* do the SSL handshake */
+  if ((ssl = SSL_new (ctx)) != NULL)
+    {
+      SSL_set_fd (ssl, sd);
+      /* original version checked for -1
+        I look for success instead (1) */
+      if (SSL_connect (ssl) == 1)
+       return OK;
+      ERR_print_errors_fp (stderr);
+    }
+  else
+    {
+      printf (_("ERROR: Cannot initiate SSL handshake.\n"));
+    }
+  /* this causes a seg faul
+     not sure why, being sloppy
+     and commenting it out */
+  //  SSL_free (ssl);
+  SSL_CTX_free(ctx);
+  my_close();
+  
+  return STATE_CRITICAL;
+}
+
+int
+check_certificate (X509 ** certificate)
+{
+  ASN1_STRING *tm;
+  int offset;
+  struct tm stamp;
+  int days_left;
+
+  /* Retrieve timestamp of certificate */
+  tm = X509_get_notAfter (*certificate);
+  
+  /* Generate tm structure to process timestamp */
+  if (tm->type == V_ASN1_UTCTIME) {
+    if (tm->length < 10) {
+      printf (_("ERROR: Wrong time format in certificate.\n"));
+      return STATE_CRITICAL;
+    }
+    else {
+      stamp.tm_year = (tm->data[0] - '0') * 10 + (tm->data[1] - '0');
+      if (stamp.tm_year < 50)
+       stamp.tm_year += 100;
+      offset = 0;
+    }
+  }
+  else {
+    if (tm->length < 12) {
+      printf (_("ERROR: Wrong time format in certificate.\n"));
+      return STATE_CRITICAL;
+    }
+    else {
+      stamp.tm_year =
+       (tm->data[0] - '0') * 1000 + (tm->data[1] - '0') * 100 +
+       (tm->data[2] - '0') * 10 + (tm->data[3] - '0');
+      stamp.tm_year -= 1900;
+      offset = 2;
+    }
+  }
+  stamp.tm_mon =
+    (tm->data[2 + offset] - '0') * 10 + (tm->data[3 + offset] - '0') - 1;
+  stamp.tm_mday =
+    (tm->data[4 + offset] - '0') * 10 + (tm->data[5 + offset] - '0');
+  stamp.tm_hour =
+    (tm->data[6 + offset] - '0') * 10 + (tm->data[7 + offset] - '0');
+  stamp.tm_min =
+    (tm->data[8 + offset] - '0') * 10 + (tm->data[9 + offset] - '0');
+  stamp.tm_sec = 0;
+  stamp.tm_isdst = -1;
+  
+  days_left = (mktime (&stamp) - time (NULL)) / 86400;
+  snprintf
+    (timestamp, 16, "%02d/%02d/%04d %02d:%02d",
+     stamp.tm_mon + 1,
+     stamp.tm_mday, stamp.tm_year + 1900, stamp.tm_hour, stamp.tm_min);
+  
+  if (days_left > 0 && days_left <= days_till_exp) {
+    printf ("Certificate expires in %d day(s) (%s).\n", days_left, timestamp);
+    return STATE_WARNING;
+  }
+  if (days_left < 0) {
+    printf ("Certificate expired on %s.\n", timestamp);
+    return STATE_CRITICAL;
+  }
+  
+  if (days_left == 0) {
+    printf ("Certificate expires today (%s).\n", timestamp);
+    return STATE_WARNING;
+  }
+  
+  printf ("Certificate will expire on %s.\n", timestamp);
+  
+  return STATE_OK;  
+}
+#endif
+
+int
+myrecv (void)
+{
+  int i;
+
+#ifdef HAVE_SSL
+  if (use_ssl) {
+    i = SSL_read (ssl, buffer, MAXBUF - 1);
+  }
+  else {
+#endif
+    i = read (sd, buffer, MAXBUF - 1);
+#ifdef HAVE_SSL
+  }
+#endif
+  return i;
+}
+
+int 
+my_close (void)
+{
+#ifdef HAVE_SSL
+  if (use_ssl == TRUE) {
+    SSL_shutdown (ssl);
+    SSL_free (ssl);
+    SSL_CTX_free (ctx);
+    return 0;
+  }
+  else {
+#endif
+    return close(sd);
+#ifdef HAVE_SSL
+  }
+#endif
 }

diff --git a/po/fr.po b/po/fr.po
index ed178637e3555b9f82809141832595a58a6e1a85..4ad5f2c0a9fa9086d87d0b2de4b9cd73f17d3890 100644 (file)
--- a/po/fr.po
+++ b/po/fr.po
@@ -10,7 +10,7 @@ msgstr ""
 "Project-Id-Version: fr\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2004-12-26 00:06+0100\n"
-"PO-Revision-Date: 2004-12-27 23:43+0100\n"
+"PO-Revision-Date: 2004-12-29 00:09+0100\n"
 "Last-Translator: Benoit Mortier <benoit.mortier@opensides.be>\n"
 "Language-Team: Français <fr@li.org>\n"
 "MIME-Version: 1.0\n"
@@ -324,81 +324,87 @@ msgstr "DHCPOFFER XID (%lu) ne correspond pas à DHCPDISCOVER XID (%lu) - paquet
 #, c-format
 msgid "DHCPOFFER hardware address did not match our own - ignoring packet\n"
 msgstr ""
+" l'addresse matérielleh du DHCPOFFER ne correspond pas à la notre\n"
+"paquet ignoré\n"
 
 #: plugins/check_dhcp.c:568
 #, c-format
 msgid "Total responses seen on the wire: %d\n"
-msgstr ""
+msgstr "Nombre total de réponses: %d\n"
 
 #: plugins/check_dhcp.c:569
-#, fuzzy, c-format
+#, c-format
 msgid "Valid responses for this machine: %d\n"
-msgstr "Réponse invalide du serveur après load 1\n"
+msgstr "Nombre de réponse valides pour cette machine: %d\n"
 
 #: plugins/check_dhcp.c:585
 #, c-format
 msgid "send_dhcp_packet result: %d\n"
-msgstr ""
+msgstr "résultat de send_dchp_packet: %d\n"
 
 #: plugins/check_dhcp.c:614
-#, fuzzy, c-format
+#, c-format
 msgid "No (more) data received\n"
-msgstr "Pas de données reçues %s\n"
+msgstr "Plus de données reçues\n"
 
 #: plugins/check_dhcp.c:633
-#, fuzzy, c-format
+#, c-format
 msgid "recvfrom() failed, "
 msgstr "La réception à échoué\n"
 
 #: plugins/check_dhcp.c:640
 #, c-format
 msgid "receive_dhcp_packet() result: %d\n"
-msgstr ""
+msgstr "résultat de receive_dchp_packet: %d\n"
 
 #: plugins/check_dhcp.c:641
 #, c-format
 msgid "receive_dhcp_packet() source: %s\n"
-msgstr ""
+msgstr "source de receive_dchp_packet: %s\n"
 
 #: plugins/check_dhcp.c:670
 #, c-format
 msgid "Error: Could not create socket!\n"
-msgstr ""
+msgstr "Erreur: Impossible de créer un socket!\n"
 
 #: plugins/check_dhcp.c:680
 #, c-format
 msgid "Error: Could not set reuse address option on DHCP socket!\n"
 msgstr ""
+"Erreur: Impossible de configurer l'option de réutilisation de l'adresse sur\n"
+"le socket DHCP!\n"
 
 #: plugins/check_dhcp.c:686
 #, c-format
 msgid "Error: Could not set broadcast option on DHCP socket!\n"
-msgstr ""
+msgstr "Erreur: Impossible de configurer l'option broadcast sur le socket DHCP!\n"
 
 #: plugins/check_dhcp.c:694
 #, c-format
 msgid "Error: Could not bind socket to interface %s.  Check your privileges...\n"
 msgstr ""
+"Erreur: Impossible de connecter le socket à l'interface %s.\n"
+"Verifiez vos droits...\n"
 
 #: plugins/check_dhcp.c:704
 #, c-format
 msgid "Error: Could not bind to DHCP socket (port %d)!  Check your privileges...\n"
-msgstr ""
+msgstr "Erreur: Impossible de se connecter au socket (port %d)!  Verifiez vos droits..\n"
 
 #: plugins/check_dhcp.c:737
-#, fuzzy, c-format
+#, c-format
 msgid "Requested server address: %s\n"
-msgstr "Vous devez fournir une adresse serveur\n"
+msgstr "Adresse serveur demandée: %s\n"
 
 #: plugins/check_dhcp.c:787
 #, c-format
 msgid "Lease Time: Infinite\n"
-msgstr ""
+msgstr "Durée du Bail: Infini\n"
 
 #: plugins/check_dhcp.c:789
-#, fuzzy, c-format
+#, c-format
 msgid "Lease Time: %lu seconds\n"
-msgstr "LRU temps d'attente = %lu secondes"
+msgstr "Durée du Bai: %lu secondes\n"
 
 #: plugins/check_dhcp.c:791
 #, c-format