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Clearer error message on invalid port (closes #278)

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This commit is contained in:
Keith Winstein
2012-05-24 17:16:03 -04:00
parent 682bbdfebd
commit 78a5eaf8e3
1 changed files with 19 additions and 2 deletions
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src/frontend/mosh-client.cc
+19 -2
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@@ -73,7 +73,7 @@ int main( int argc, char *argv[] )
} }
} }
char *ip; char *ip, *desired_port;
int port; int port;
if ( argc - optind != 2 ) { if ( argc - optind != 2 ) {
@@ -82,7 +82,24 @@ int main( int argc, char *argv[] )
} }
ip = argv[ optind ]; ip = argv[ optind ];
port = myatoi( argv[ optind + 1 ] ); desired_port = argv[ optind + 1 ];
/* Sanity-check arguments */
if ( ip
&& ( strspn( ip, "0123456789." ) != strlen( ip ) ) ) {
fprintf( stderr, "%s: Bad IP address (%s)\n\n", argv[ 0 ], ip );
usage( argv[ 0 ] );
exit( 1 );
}
if ( desired_port
&& ( strspn( desired_port, "0123456789" ) != strlen( desired_port ) ) ) {
fprintf( stderr, "%s: Bad UDP port (%s)\n\n", argv[ 0 ], desired_port );
usage( argv[ 0 ] );
exit( 1 );
}
port = myatoi( desired_port );
/* Read key from environment */ /* Read key from environment */
char *env_key = getenv( "MOSH_KEY" ); char *env_key = getenv( "MOSH_KEY" );