Read the response to an SMTP QUIT command before closing the socket

(noted by Dieter Hendricks on nagiosplug-help@)


git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1769 f882894a-f735-0410-b71e-b25c423dba1c

1 files changed, 28 insertions, 3 deletions

diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c
index a7a0783..8d392cc 100644
--- a/plugins/check_smtp.c
+++ b/plugins/check_smtp.c
@@ -74,6 +74,7 @@ int process_arguments (int, char **);
 int validate_arguments (void);
 void print_help (void);
 void print_usage (void);
+void smtp_quit(void);
 int my_close(void);
 
 #include "regex.h"
@@ -258,7 +259,7 @@ main (int argc, char **argv)
 
                 if(use_ssl && ! supports_tls){
                         printf(_("WARNING - TLS not supported by server\n"));
-                        send (sd, SMTP_QUIT, strlen (SMTP_QUIT), 0);
+                        smtp_quit();
                         return STATE_WARNING;
                 }
 
@@ -270,7 +271,7 @@ main (int argc, char **argv)
                   recv(sd,buffer, MAX_INPUT_BUFFER-1, 0); /* wait for it */
                   if (!strstr (buffer, server_expect)) {
                     printf (_("Server does not support STARTTLS\n"));
-                    send (sd, SMTP_QUIT, strlen (SMTP_QUIT), 0);
+                    smtp_quit();
                     return STATE_UNKNOWN;
                   }
                   result = np_net_ssl_init(sd);
@@ -460,7 +461,7 @@ main (int argc, char **argv)
                 }
 
                 /* tell the server we're done */
-                my_send (SMTP_QUIT, strlen (SMTP_QUIT));
+                smtp_quit();
 
                 /* finally close the connection */
                 close (sd);
@@ -704,6 +705,30 @@ validate_arguments (void)
 }
 
 
+void
+smtp_quit(void)
+{
+        int bytes;
+
+        my_send(SMTP_QUIT, strlen(SMTP_QUIT));
+        if (verbose)
+                printf(_("sent %s\n"), "QUIT");
+
+        /* read the response but don't care about problems */
+        bytes = my_recv(buffer, MAXBUF - 1);
+        if (verbose) {
+                if (bytes < 0)
+                        printf(_("recv() failed after QUIT."));
+                else if (bytes == 0)
+                        printf(_("Connection reset by peer."));
+                else {
+                        buffer[bytes] = '\0';
+                        printf(_("received %s\n"), buffer);
+                }
+        }
+}
+
+
 int 
 my_close (void)
 {