Resolve Coverity issues

Signed-off-by: John Hood <cgull@glup.org>

src/examples/benchmark.cc

@@ -44,6 +44,7 @@
 #include <signal.h>
 #include <time.h>
 #include <limits.h>
+#include <exception>
 
 #if HAVE_PTY_H
 #include <pty.h>
@@ -64,13 +65,24 @@ using namespace Terminal;
 
 int main( int argc, char **argv )
 {
+  try {
     int fbmod = 0;
     int width = 80, height = 24;
     int iterations = ITERATIONS;
-  if (argc > 1) iterations = atoi(argv[1]);
+    if (argc > 1) {
+      iterations = atoi(argv[1]);
+      if (iterations < 1 || iterations > 1000000000) {
+	fprintf(stderr, "bogus iteration count\n");
+	exit(1);
+      }
+    }
     if (argc > 3) {
       width = atoi(argv[2]);
       height = atoi(argv[3]);
+      if (width < 1 || width > 1000 || height < 1 || height > 1000) {
+	fprintf(stderr, "bogus window size\n");
+	exit(1);
+      }
     }
     Framebuffer local_framebuffers[ 2 ] = { Framebuffer(width,height), Framebuffer(width,height) };
     Framebuffer *local_framebuffer = &(local_framebuffers[ fbmod ]);
@@ -107,6 +119,9 @@ int main( int argc, char **argv )
       local_framebuffer = &(local_framebuffers[ fbmod ]);
       new_state = &(local_framebuffers[ !fbmod ]);
     }
-
+  } catch ( const std::exception &e ) {
+    fprintf( stderr, "Exception caught: %s\n", e.what() );
+    return 1;
+  }
   return 0;
 }

src/examples/ntester.cc

@@ -65,13 +65,12 @@ int main( int argc, char *argv[] )
     } else {
       n = new Transport<UserStream, UserStream>( me, remote, NULL, NULL );
     }
-  } catch ( const CryptoException &e ) {
-    fprintf( stderr, "Fatal error: %s\n", e.what() );
+    fprintf( stderr, "Port bound is %s, key is %s\n", n->port().c_str(), n->get_key().c_str() );
+  } catch ( const std::exception &e ) {
+    fprintf( stderr, "Fatal startup error: %s\n", e.what() );
     exit( 1 );
   }
 
-  fprintf( stderr, "Port bound is %s, key is %s\n", n->port().c_str(), n->get_key().c_str() );
-
   if ( server ) {
     Select &sel = Select::get_instance();
     uint64_t last_num = n->get_remote_state_num();
@@ -97,8 +96,8 @@ int main( int argc, char *argv[] )
 	    last_num = n->get_remote_state_num();
 	  }
 	}
-      } catch ( const CryptoException &e ) {
-	fprintf( stderr, "Cryptographic error: %s\n", e.what() );
+      } catch ( const std::exception &e ) {
+	fprintf( stderr, "Server error: %s\n", e.what() );
       }
     }
   } else {
@@ -163,11 +162,8 @@ int main( int argc, char *argv[] )
 	if ( network_ready_to_read ) {
 	  n->recv();
 	}
-      } catch ( const NetworkException &e ) {
-	fprintf( stderr, "%s\n", e.what() );
-	break;
-      } catch ( const CryptoException &e ) {
-	fprintf( stderr, "Cryptographic error: %s\n", e.what() );
+      } catch ( const std::exception &e ) {
+	fprintf( stderr, "Client error: %s\n", e.what() );
       }
     }
 

src/examples/termemu.cc

@@ -51,6 +51,7 @@
 #include <sys/types.h>
 #include <pwd.h>
 #include <sys/time.h>
+#include <exception>
 
 #if HAVE_PTY_H
 #include <pty.h>
@@ -123,7 +124,7 @@ int main( int argc, char *argv[] )
     } else {
       /* get shell name */
       my_argv[ 0 ] = getenv( "SHELL" );
-      if ( my_argv[ 0 ] == NULL ) {
+      if ( my_argv[ 0 ] == NULL || *my_argv[ 0 ] == '\0' ) {
 	struct passwd *pw = getpwuid( geteuid() );
 	if ( pw == NULL ) {
 	  perror( "getpwuid" );
@@ -151,7 +152,11 @@ int main( int argc, char *argv[] )
       exit( 1 );
     }
 
+    try {
       emulate_terminal( master );
+    } catch ( const std::exception &e ) {
+      fprintf( stderr, "\r\nException caught: %s\r\n", e.what() );
+    }
 
     if ( tcsetattr( STDIN_FILENO, TCSANOW, &saved_termios ) < 0 ) {
       perror( "tcsetattr" );