1 files changed, 38 insertions, 10 deletions

diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c
index f96db49..4e5d3c8 100644
--- a/plugins/check_smtp.c
+++ b/plugins/check_smtp.c
@@ -52,8 +52,11 @@
  *
  * According to rfc821 you can include a null reversepath in the from command
  * - but a log message is generated on the smtp server.
+ *
+ * Use the -f option to provide a FROM address
  */
-#define SMTP_DUMMYCMD  "MAIL FROM:<>\r\n"
+  
+#define SMTP_DUMMYCMD  "MAIL "
 #define SMTP_USE_DUMMYCMD 1
 #define SMTP_QUIT       "QUIT\r\n"
 
@@ -67,6 +70,7 @@ void print_usage (void);
 int server_port = SMTP_PORT;
 char *server_address = NULL;
 char *server_expect = NULL;
+char *from_arg = " ";
 int warning_time = 0;
 int check_warning_time = FALSE;
 int critical_time = 0;
@@ -80,16 +84,31 @@ main (int argc, char **argv)
         int result;
         char buffer[MAX_INPUT_BUFFER] = "";
         char helocmd[255] = SMTP_HELO ;
+        char from_str[255] = SMTP_DUMMYCMD ;
         char myhostname[248];
         
 
         if (process_arguments (argc, argv) != OK)
                 usage ("Invalid command arguments supplied\n");
 
-        /* initalize the HELO command with the localhostname */
+        /* initialize the HELO command with the localhostname */
         gethostname(myhostname, sizeof(myhostname));
         strcat(helocmd, myhostname);
         strcat(helocmd, "\r\n");
+
+        /* initialize the MAIL command with optional FROM command  */
+        if (from_arg) {
+                strcat(from_str, "FROM: ");
+                strcat(from_str, from_arg);
+        }
+        /* terminate line with a CRLF */
+        strcat(from_str, "\r\n");
+                
+        if (verbose == TRUE){
+                printf ("FROMCMD: %s\n", from_str);
+        }
+
+        
         
         /* initialize alarm signal handling */
         signal (SIGALRM, socket_timeout_alarm_handler);
@@ -157,9 +176,11 @@ main (int argc, char **argv)
                 recv(sd,buffer,MAX_INPUT_BUFFER-1,0);
                                 
 #ifdef SMTP_USE_DUMMYCMD
-               send(sd,SMTP_DUMMYCMD,strlen(SMTP_DUMMYCMD),0);
-               /* allow for response to DUMMYCMD to reach us */
-               recv(sd,buffer,MAX_INPUT_BUFFER-1,0);
+                send(sd,from_str,strlen(from_str),0);
+                /* allow for response to DUMMYCMD to reach us */
+                recv(sd,buffer,MAX_INPUT_BUFFER-1,0);
+                if (verbose == TRUE) 
+                        printf("DUMMYCMD: %s\n%s\n",from_str,buffer);           
 #endif /* SMTP_USE_DUMMYCMD */
 
                 /* finally close the connection */
@@ -240,7 +261,8 @@ call_getopt (int argc, char **argv)
                 {"expect", required_argument, 0, 'e'},
                 {"critical", required_argument, 0, 'c'},
                 {"warning", required_argument, 0, 'w'},
-                {"port", required_argument, 0, 'P'},
+                {"port", required_argument, 0, 'p'},
+                {"from", required_argument, 0, 'f'},
                 {"verbose", no_argument, 0, 'v'},
                 {"version", no_argument, 0, 'V'},
                 {"help", no_argument, 0, 'h'},
@@ -251,10 +273,10 @@ call_getopt (int argc, char **argv)
         while (1) {
 #ifdef HAVE_GETOPT_H
                 c =
-                        getopt_long (argc, argv, "+hVvt:p:e:c:w:H:", long_options,
+                        getopt_long (argc, argv, "+hVvt:p:f:e:c:w:H:", long_options,
                                                                          &option_index);
 #else
-                c = getopt (argc, argv, "+?hVvt:p:e:c:w:H:");
+                c = getopt (argc, argv, "+?hVvt:p:f:e:c:w:H:");
 #endif
 
                 i++;
@@ -266,6 +288,7 @@ call_getopt (int argc, char **argv)
                 case 't':
                 case 'p':
                 case 'e':
+                case 'f':
                 case 'c':
                 case 'w':
                 case 'H':
@@ -289,7 +312,10 @@ call_getopt (int argc, char **argv)
                                 usage ("Server port must be a positive integer\n");
                         }
                         break;
-                case 'e':                                                                       /* username */
+                case 'f':                                                                       /* from argument */
+                        from_arg = optarg;
+                        break;
+                case 'e':                                                                       /* server expect string on 220  */
                         server_expect = optarg;
                         break;
                 case 'c':                                                                       /* critical time threshold */
@@ -364,6 +390,8 @@ print_help (void)
                  "   Make connection on the indicated port (default: %d)\n"
                  " -e, --expect=STRING\n"
                  "   String to expect in first line of server response (default: %s)\n"
+                 " -f, --from=STRING\n"
+                 "   from address to include in MAIL command (default NULL, Exchange2000 requires one)\n"
                  " -w, --warning=INTEGER\n"
                  "   Seconds necessary to result in a warning status\n"
                  " -c, --critical=INTEGER\n"
@@ -388,7 +416,7 @@ void
 print_usage (void)
 {
         printf
-                ("Usage: %s -H host [-e expect] [-p port] [-w warn] [-c crit] [-t timeout] [-v]\n"
+                ("Usage: %s -H host [-e expect] [-p port] [-f from addr] [-w warn] [-c crit] [-t timeout] [-v]\n"
                  "       %s --help\n"
                  "       %s --version\n", PROGNAME, PROGNAME, PROGNAME);
 }