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/*
Crown Copyright (c) 1997
This TenDRA(r) Computer Program is subject to Copyright
owned by the United Kingdom Secretary of State for Defence
acting through the Defence Evaluation and Research Agency
(DERA). It is made available to Recipients with a
royalty-free licence for its use, reproduction, transfer
to other parties and amendment for any purpose not excluding
product development provided that any such use et cetera
shall be deemed to be acceptance of the following conditions:-
(1) Its Recipients shall ensure that this Notice is
reproduced upon any copies or amended versions of it;
(2) Any amended version of it shall be clearly marked to
show both the nature of and the organisation responsible
for the relevant amendment or amendments;
(3) Its onward transfer from a recipient to another
party shall be deemed to be that party's acceptance of
these conditions;
(4) DERA gives no warranty or assurance as to its
quality or suitability for any purpose and DERA accepts
no liability whatsoever in relation to any use to which
it may be put.
*/
#include "config.h"
#if FS_STDARG
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include <sys/types.h>
#include <errno.h>
#include <sys/stat.h>
#include "name.h"
#include "utility.h"
#ifdef FS_NO_MODE_T
typedef unsigned short mode_t ;
#endif
#ifndef errno
extern int errno ;
#endif
/*
INPUT BUFFER
This buffer is used to store strings in various contexts.
*/
char *buffer = null ;
/*
ERROR VARIABLES
The value exit_status gives the overall status of the program. It
can be EXIT_SUCCESS or EXIT_FAILURE. The variable progname gives
the name of the program, which is used in error reports. filename
and line_no give the current file position.
*/
int exit_status = EXIT_SUCCESS ;
int no_errors = 0 ;
int warnings = 1 ;
char *progname = "tspec" ;
char *progvers = "2.8" ;
time_t progdate = 0 ;
char *filename = null ;
int line_no = 1 ;
/*
PRINT AN ERROR MESSAGE
This routine prints an error message s (a printf-style string,
which may be followed by any number of arguments) of severity e
(see utility.h).
*/
void error
PROTO_V ( ( int e, char *s, ... ) ) /* VARARGS */
{
va_list args ;
char *errtype = null ;
boolean show_line = 1 ;
#if FS_STDARG
va_start ( args, s ) ;
#else
int e ;
char *s ;
va_start ( args ) ;
e = va_arg ( args, int ) ;
s = va_arg ( args, char * ) ;
#endif
switch ( e ) {
case ERR_FATAL : {
exit_status = EXIT_FAILURE ;
errtype = "Fatal" ;
no_errors++ ;
break ;
}
case ERR_INTERNAL : {
exit_status = EXIT_FAILURE ;
errtype = "Internal" ;
no_errors++ ;
break ;
}
case ERR_SERIOUS : {
exit_status = EXIT_FAILURE ;
errtype = "Error" ;
no_errors++ ;
break ;
}
case ERR_WARNING : {
if ( !warnings ) {
va_end ( args ) ;
return ;
}
errtype = "Warning" ;
break ;
}
case ERR_INFO : {
errtype = "Info" ;
show_line = 0 ;
break ;
}
}
if ( progname ) IGNORE fprintf ( stderr, "%s: ", progname ) ;
if ( errtype ) IGNORE fprintf ( stderr, "%s: ", errtype ) ;
IGNORE vfprintf ( stderr, s, args ) ;
if ( filename && show_line ) {
IGNORE fprintf ( stderr, ", %s, line %d", filename, line_no ) ;
}
IGNORE fprintf ( stderr, ".\n" ) ;
va_end ( args ) ;
if ( e == ERR_FATAL ) exit ( exit_status ) ;
return ;
}
/*
ALLOCATE A BLOCK OF MEMORY
This routine allocates a block of memory of size sz and returns
the result.
*/
pointer xalloc
PROTO_N ( ( sz ) )
PROTO_T ( int sz )
{
pointer p = ( pointer ) malloc ( ( size_t ) sz ) ;
if ( p == null ) error ( ERR_FATAL, "Memory allocation error" ) ;
return ( p ) ;
}
/*
REALLOCATE A BLOCK OF MEMORY
This routine reallocates the block of memory p to have size sz.
xrealloc ( null, sz ) is equivalent to xalloc ( sz ).
*/
pointer xrealloc
PROTO_N ( ( p, sz ) )
PROTO_T ( pointer p X int sz )
{
pointer q ;
if ( p == null ) return ( xalloc ( sz ) ) ;
q = ( pointer ) realloc ( p, ( size_t ) sz ) ;
if ( q == null ) error ( ERR_FATAL, "Memory reallocation error" ) ;
return ( q ) ;
}
/*
ALLOCATE SPACE FOR A STRING
This routine allocates space for a string of size n.
*/
static char *string_alloc
PROTO_N ( ( n ) )
PROTO_T ( int n )
{
char *r ;
if ( n >= 1000 ) {
/* Long strings are allocated space by alloc_nof */
r = alloc_nof ( char, n ) ;
} else {
/* Short strings are allocated space from a buffer */
static int no_free = 0 ;
static char *free_chars = null ;
if ( n >= no_free ) {
no_free = 1000 ;
free_chars = alloc_nof ( char, no_free ) ;
}
r = free_chars ;
no_free -= n ;
free_chars += n ;
}
return ( r ) ;
}
/*
COPY A STRING
This routine allocates space for a copy of the string s and copies
the string into this space. This copy is returned.
*/
char *string_copy
PROTO_N ( ( s ) )
PROTO_T ( char *s )
{
int n = ( int ) strlen ( s ) ;
char *r = string_alloc ( n + 1 ) ;
IGNORE strcpy ( r, s ) ;
return ( r ) ;
}
/*
CONCATENCATE TWO STRINGS
This routine allocates space for the concatenation of the strings
s and t.
*/
char *string_concat
PROTO_N ( ( s, t ) )
PROTO_T ( char *s X char *t )
{
int n = ( int ) strlen ( s ) ;
int m = ( int ) strlen ( t ) ;
char *r = string_alloc ( n + m + 1 ) ;
IGNORE strcpy ( r, s ) ;
IGNORE strcpy ( r + n, t ) ;
return ( r ) ;
}
/*
CONSTRUCT A STRING
This routine takes a printf string and a list of arguments, and
does a sprintf into a permanent area of memory.
*/
char *string_printf
PROTO_V ( ( char *s, ... ) ) /* VARARGS */
{
va_list args ;
#if FS_STDARG
va_start ( args, s ) ;
#else
char *s ;
va_start ( args ) ;
s = va_arg ( args, char * ) ;
#endif
IGNORE vsprintf ( buffer, s, args ) ;
va_end ( args ) ;
return ( string_copy ( buffer ) ) ;
}
/*
MODE OF DIRECTORIES CREATED
The mode of any created directories is determined. On a truly POSIX
compliant machine, the first branch is taken.
*/
#if defined ( S_IRWXU ) && defined ( S_IRWXG ) && defined ( S_IRWXO )
#define DIRMODE ( S_IRWXU | S_IRWXG | S_IRWXO )
#else
#if defined ( S_IREAD ) && defined ( S_IWRITE ) && defined ( S_IEXEC )
#define DIRMODE ( S_IREAD | S_IWRITE | S_IEXEC )
#else
#define DIRMODE 0777
#endif
#endif
/*
CREATE A DIRECTORY TO PUT A FILE IN
This routine recursively creates a directory to contain a file
named nm.
*/
void create_dir
PROTO_N ( ( nm ) )
PROTO_T ( char *nm )
{
struct stat st ;
char *dir = dirname ( nm ) ;
if ( dir == null ) return ;
if ( stat ( dir, &st ) == 0 ) return ;
#ifdef ENOENT
if ( errno != ENOENT ) {
error ( ERR_SERIOUS, "Illegal directory, %s", dir ) ;
return ;
}
#endif
create_dir ( dir ) ;
if ( verbose ) error ( ERR_INFO, "Creating directory, %s ...", dir ) ;
if ( mkdir ( dir, ( mode_t ) DIRMODE ) ) {
error ( ERR_SERIOUS, "Can't create directory, %s", dir ) ;
return ;
}
return ;
}
/*
CHECK A FILENAME
This routine checks the file name nm for excessively long components,
which may cause problems on some machines.
*/
void check_name
PROTO_N ( ( nm ) )
PROTO_T ( char *nm )
{
char *p ;
int i = 0, n = 0 ;
for ( p = nm ; *p ; p++ ) {
if ( *p == '/' ) {
if ( i > n ) n = i ;
i = 0 ;
} else {
i++ ;
}
}
if ( i > n ) n = i ;
if ( n > 14 ) {
char *err = "The filename %s contains a component of length %d" ;
error ( ERR_WARNING, err, nm, n ) ;
}
return ;
}
/*
FIND THE DATE STAMP ON A FILE
This routine finds the modification time of the file nm. Zero is
returned for inaccessible files.
*/
time_t date_stamp
PROTO_N ( ( nm ) )
PROTO_T ( char *nm )
{
struct stat st ;
if ( nm && stat ( nm, &st ) == 0 ) return ( st.st_mtime ) ;
return ( ( time_t ) 0 ) ;
}