mausezahn: provide port option to configuration file

Specify the port for the CLI in /etc/netsniff-ng/mausezahn.conf like so:

$ grep port /etc/netsniff-ng/mausezahn.conf
port = 65000

$ mausezahn -V -x -l 127.0.0.1

Mausezahn 0.40 - (C) 2007-2010 by Herbert Haas - http://www.perihel.at/sec/mz/
Use at your own risk and responsibility!
-- Verbose mode --

...
Opening config file /etc/netsniff-ng/mausezahn.conf...
...
Mausezahn accepts incoming Telnet connections on 127.0.0.1:65000.

Signed-off-by: Jon Schipp <jonschipp@gmail.com>
[tklauser: Fixed whitespace issues for patch to apply cleanly]
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

3 files changed, 12 insertions, 7 deletions

diff --git a/mausezahn.8 b/mausezahn.8
index 6614407..2873e9d 100644
--- a/mausezahn.8
+++ b/mausezahn.8
@@ -230,6 +230,7 @@ Options supported in the configuration file are:
    user			Username for authentication (default: mz)
    password		Password for authentication (default: mz)
    enable		     Password to enter privilege mode (default: mops)
+   port			The listening port for the CLI (default: 25542)
    cli-device		Interface to bind to (default: all) *not fully implemented*
 
 .SS Example:
@@ -238,6 +239,7 @@ Options supported in the configuration file are:
  user = mzadmin
  password = mzpasswd
  enable = privilege-mode-passwd
+ port = 65000
 .PP
 .SH INTERACTIVE MODE HOWTO
 .PP
diff --git a/staging/cli.c b/staging/cli.c
index 9abc648..a5ce174 100644
--- a/staging/cli.c
+++ b/staging/cli.c
@@ -56,7 +56,7 @@ int cli_read_cfg(char *str)
 	char dev[256];
 	FILE *fd;
 	int i, j=0, len, found=0, nonspc=0;
-	int user=0, pass=0, ena=0, amp=0, mgmt_only=0, cli=0;
+	int user=0, pass=0, ena=0, amp=0, mgmt_only=0, cli=0, port=0;
 	
 	strncpy(filename, str, 255);
 	 
@@ -79,6 +79,7 @@ int cli_read_cfg(char *str)
 		if (!user) user = sscanf(line, " user = %s ", mz_username);
 		if (!pass) pass = sscanf(line, " password = %s ", mz_password);
 		if (!ena) ena  = sscanf(line, " enable = %s ", mz_enable);
+		if (!port) port = sscanf(line, " port = %i ", &mz_port);
 		if (!cli) cli  = sscanf(line, " cli-device = %s ", dev);
 		if (cli==1) {
 			for (i=0; i<device_list_entries; i++) {
@@ -131,7 +132,7 @@ int cli_read_cfg(char *str)
 		}
 	}
 	fclose(fd);
-	
+
 	if (verbose) {
 		if (user!=1)
 			fprintf(stderr, "%s: No user name specified - will use default.\n", filename);
@@ -141,6 +142,9 @@ int cli_read_cfg(char *str)
 		
 		if (ena!=1) 
 			fprintf(stderr, "%s: No enable password specified - will use default.\n", filename);
+
+		if (port!=1)
+			fprintf(stderr, "%s: No port specified - will use default.\n", filename);
 	}
 	
 	cli_debug = 0;
@@ -528,7 +532,6 @@ int cli()
 	   }
    }
    
-	
    // Listen on port mz_port (default: 25542, towel day)
    memset(&servaddr, 0, sizeof(servaddr));
    servaddr.sin_family = AF_INET;
@@ -536,6 +539,10 @@ int cli()
    servaddr.sin_port = htons(mz_port); 
    bind(s, (struct sockaddr *)&servaddr, sizeof(servaddr));
 
+   if (!quiet) {
+                       fprintf(stderr, "Mausezahn accepts incoming Telnet connections on %s:%i.\n",  mz_listen_addr, mz_port);
+               }
+
    // Wait for a connection
    listen(s, 50);
 
diff --git a/staging/mausezahn.c b/staging/mausezahn.c
index 0c0296e..46b7428 100644
--- a/staging/mausezahn.c
+++ b/staging/mausezahn.c
@@ -727,10 +727,6 @@ int getopts (int argc, char *argv[])
 			mz_port = (int) str2int (tx.arg_string);
 		}
 
-		if (!quiet) {
-			fprintf(stderr, "Mausezahn accepts incoming Telnet connections on port %i.\n", mz_port);
-		}
-
 		mz_cli_init();
 		cli();
 	}