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-rw-r--r--plugins/check_smtp.c218
1 files changed, 20 insertions, 198 deletions
diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c
index 19e9aea8..ad85c7f6 100644
--- a/plugins/check_smtp.c
+++ b/plugins/check_smtp.c
@@ -27,35 +27,14 @@ 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);
-# ifdef USE_OPENSSL
-int check_certificate (X509 **);
-# endif
+# define my_recv(buf, len) ((use_ssl && ssl_established) ? np_net_ssl_read(buf, len) : read(sd, buf, len))
+# define my_send(buf, len) ((use_ssl && ssl_established) ? np_net_ssl_write(buf, len) : send(sd, buf, len, 0))
+#else /* ifndef HAVE_SSL */
+# define my_recv(buf, len) read(sd, buf, len)
+# define my_send(buf, len) send(sd, buf, len, 0)
#endif
enum {
@@ -77,7 +56,6 @@ 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
@@ -111,7 +89,7 @@ int check_critical_time = FALSE;
int verbose = 0;
int use_ssl = FALSE;
short use_ehlo = FALSE;
-short ssl_established = TRUE;
+short ssl_established = 0;
char *localhostname = NULL;
int sd;
char buffer[MAX_INPUT_BUFFER];
@@ -237,22 +215,20 @@ main (int argc, char **argv)
send (sd, SMTP_QUIT, strlen (SMTP_QUIT), 0);
return STATE_UNKNOWN;
}
- if(connect_STARTTLS() != OK) {
+ result = np_net_ssl_init(sd);
+ if(result != STATE_OK) {
printf (_("CRITICAL - Cannot create SSL context.\n"));
+ np_net_ssl_cleanup();
+ close(sd);
return STATE_CRITICAL;
} else {
- ssl_established = TRUE;
+ ssl_established = 1;
}
# ifdef USE_OPENSSL
if ( check_cert ) {
- if ((server_cert = SSL_get_peer_certificate (ssl)) != NULL) {
- result = check_certificate (&server_cert);
- X509_free(server_cert);
- }
- else {
+ result = np_net_ssl_check_cert(days_till_exp);
+ if(result != STATE_OK){
printf (_("CRITICAL - Cannot retrieve server certificate.\n"));
- result = STATE_CRITICAL;
-
}
my_close();
return result;
@@ -272,26 +248,16 @@ main (int argc, char **argv)
* Use the -f option to provide a FROM address
*/
if (smtp_use_dummycmd) {
-#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();
+ my_send(cmd_str, strlen(cmd_str));
+ my_recv(buffer, MAX_INPUT_BUFFER-1);
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);
- myrecv();
+ my_send(cmd_str, strlen(cmd_str));
+ my_recv(buffer, MAX_INPUT_BUFFER-1);
if (verbose)
printf("%s", buffer);
strip (buffer);
@@ -328,12 +294,7 @@ 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);
+ my_send (SMTP_QUIT, strlen (SMTP_QUIT));
/* finally close the connection */
close (sd);
@@ -626,150 +587,11 @@ Usage: %s -H host [-p port] [-e expect] [-C command] [-f from addr]\n\
[-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 = SSLv23_client_method ();
- SSL_load_error_strings ();
- if ((ctx = SSL_CTX_new (meth)) == NULL)
- {
- printf(_("CRITICAL - 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;
-# ifdef USE_OPENSSL
- ERR_print_errors_fp (stderr);
-# endif
- }
- else
- {
- printf (_("CRITICAL - Cannot initiate SSL handshake.\n"));
- }
- my_close();
-
- return STATE_CRITICAL;
-}
-
-# ifdef USE_OPENSSL
-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 (_("CRITICAL - 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 (_("CRITICAL - 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, sizeof(timestamp), "%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 /* USE_OPENSSL */
-#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_established == TRUE) {
- SSL_shutdown (ssl);
- SSL_free (ssl);
- SSL_CTX_free (ctx);
- return 0;
- }
- else {
-#endif
- return close(sd);
-#ifdef HAVE_SSL
- }
+ np_net_ssl_cleanup();
#endif
+ return close(sd);
}
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