Patch for checking file parameters to psql before password prompt

diff --git a/src/bin/psql/command.c b/src/bin/psql/command.c
new file mode 100644
index 8ccd00d..2a324ae
*** a/src/bin/psql/command.c
--- b/src/bin/psql/command.c
*************** int
*** 2049,2058 ****
  process_file(char *filename, bool single_txn, bool use_relative_path)
  {
  	FILE	   *fd;
! 	int			result;
! 	char	   *oldfilename;
! 	char		relpath[MAXPGPATH];
! 	PGresult   *res;
  
  	if (!filename)
  	{
--- 2049,2077 ----
  process_file(char *filename, bool single_txn, bool use_relative_path)
  {
  	FILE	   *fd;
! 	
! 	fd = get_fd_for_process(filename, use_relative_path);
! 	if (!fd)
! 	{
! 		return EXIT_FAILURE;
! 	}
! 
! 	return process_fd(fd, filename, single_txn);
! }
! 
! 
! 
! /*
!  * get_fd_for_process
!  *
!  * Open a file to read and process commands from, used by process_file and
!  * the -f startup option
!  */
! FILE *
! get_fd_for_process(char *filename, bool use_relative_path)
! {
! 	FILE	*fd;
! 	char	relpath[MAXPGPATH];
  
  	if (!filename)
  	{
*************** process_file(char *filename, bool single
*** 2085,2091 ****
  		if (!fd)
  		{
  			psql_error("%s: %s\n", filename, strerror(errno));
- 			return EXIT_FAILURE;
  		}
  	}
  	else
--- 2104,2109 ----
*************** process_file(char *filename, bool single
*** 2094,2099 ****
--- 2112,2133 ----
  		filename = "<stdin>";	/* for future error messages */
  	}
  
+ 	return fd;
+ }
+ 
+ 
+ 
+ /*
+  * process_fd
+  *
+  */
+ int
+ process_fd(FILE *fd, char *filename, bool single_txn)
+ {
+ 	int		result;
+ 	char		*oldfilename;
+ 	PGresult   	*res;
+ 
  	oldfilename = pset.inputfile;
  	pset.inputfile = filename;
  
*************** error:
*** 2132,2137 ****
--- 2166,2172 ----
  		fclose(fd);
  
  	pset.inputfile = oldfilename;
+ 
  	return result;
  }
  
diff --git a/src/bin/psql/command.h b/src/bin/psql/command.h
new file mode 100644
index f0bcea0..b44ea16
*** a/src/bin/psql/command.h
--- b/src/bin/psql/command.h
*************** extern backslashResult HandleSlashCmds(P
*** 28,33 ****
--- 28,35 ----
  				PQExpBuffer query_buf);
  
  extern int	process_file(char *filename, bool single_txn, bool use_relative_path);
+ extern FILE *	get_fd_for_process(char *filename, bool use_relative_path);
+ extern int	process_fd(FILE *fd, char *filename, bool single_txn);
  
  extern bool do_pset(const char *param,
  		const char *value,
diff --git a/src/bin/psql/startup.c b/src/bin/psql/startup.c
new file mode 100644
index 1fcc47f..513e357
*** a/src/bin/psql/startup.c
--- b/src/bin/psql/startup.c
*************** struct adhoc_opts
*** 65,70 ****
--- 65,71 ----
  	char	   *logfilename;
  	enum _actions action;
  	char	   *action_string;
+ 	FILE	   *fd;
  	bool		no_readline;
  	bool		no_psqlrc;
  	bool		single_txn;
*************** main(int argc, char *argv[])
*** 184,189 ****
--- 185,218 ----
  		pset.popt.topt.recordSep.separator_zero = false;
  	}
  
+ 
+ 	/*
+ 	 * Before asking the user for a password, sanity check those options which can be
+ 	 * checked without information leakage.
+ 	 * --ouput has been checked during setQFout called from parse_psql_option
+ 	 */	
+ 	if (options.logfilename)
+ 	{
+ 		pset.logfile = fopen(options.logfilename, "a");
+ 		if (!pset.logfile)
+ 		{
+ 			fprintf(stderr, _("%s: could not open log file \"%s\": %s\n"),
+ 					pset.progname, options.logfilename, strerror(errno));
+ 			exit(EXIT_FAILURE);
+ 		}
+ 	}
+ 	if (options.action == ACT_FILE)
+ 	{
+ 		options.fd = get_fd_for_process(options.action_string, false);
+ 		if (!options.fd)
+ 		{
+ 			/*
+ 			 * Reporting the error has already been done in get_fd_for_process
+ 			 */
+ 			exit(EXIT_FAILURE);
+ 		}
+ 	}
+ 
  	if (options.username == NULL)
  		password_prompt = pg_strdup(_("Password: "));
  	else
*************** main(int argc, char *argv[])
*** 265,278 ****
  		exit(success ? EXIT_SUCCESS : EXIT_FAILURE);
  	}
  
- 	if (options.logfilename)
- 	{
- 		pset.logfile = fopen(options.logfilename, "a");
- 		if (!pset.logfile)
- 			fprintf(stderr, _("%s: could not open log file \"%s\": %s\n"),
- 					pset.progname, options.logfilename, strerror(errno));
- 	}
- 
  	/*
  	 * Now find something to do
  	 */
--- 294,299 ----
*************** main(int argc, char *argv[])
*** 285,291 ****
  		if (!options.no_psqlrc)
  			process_psqlrc(argv[0]);
  
! 		successResult = process_file(options.action_string, options.single_txn, false);
  	}
  
  	/*
--- 306,312 ----
  		if (!options.no_psqlrc)
  			process_psqlrc(argv[0]);
  
! 		successResult = process_fd(options.fd, options.action_string, options.single_txn);
  	}
  
  	/*
*************** parse_psql_options(int argc, char *argv[
*** 453,459 ****
  				options->no_readline = true;
  				break;
  			case 'o':
! 				setQFout(optarg);
  				break;
  			case 'p':
  				options->port = pg_strdup(optarg);
--- 474,481 ----
  				options->no_readline = true;
  				break;
  			case 'o':
! 				if (!(setQFout(optarg)))
! 					exit(EXIT_FAILURE);
  				break;
  			case 'p':
  				options->port = pg_strdup(optarg);