mirror of
git://git.gnupg.org/gnupg.git
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1166 lines
25 KiB
C
1166 lines
25 KiB
C
/* stringhelp.c - standard string helper functions
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* Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007,
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* 2008, 2009, 2010 Free Software Foundation, Inc.
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*
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* This file is part of JNLIB, which is a subsystem of GnuPG.
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*
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* JNLIB is free software; you can redistribute it and/or modify it
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* under the terms of either
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*
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* - the GNU Lesser General Public License as published by the Free
|
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* Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* or
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*
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* - the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* or both in parallel, as here.
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*
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* JNLIB is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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||
* General Public License for more details.
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*
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* You should have received a copies of the GNU General Public License
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* and the GNU Lesser General Public License along with this program;
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* if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <ctype.h>
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#include <errno.h>
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#ifdef HAVE_PWD_H
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# include <pwd.h>
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#endif
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#include <unistd.h>
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#include <sys/types.h>
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#ifdef HAVE_W32_SYSTEM
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# include <windows.h>
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#endif
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#include "libjnlib-config.h"
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#include "utf8conv.h"
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#include "stringhelp.h"
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#define tohex_lower(n) ((n) < 10 ? ((n) + '0') : (((n) - 10) + 'a'))
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/* Sometimes we want to avoid mixing slashes and backslashes on W32
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and prefer backslashes. There is usual no problem with mixing
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them, however a very few W32 API calls can't grok plain slashes.
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Printing filenames with mixed slashes also looks a bit strange.
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This function has no effext on POSIX. */
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static inline char *
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change_slashes (char *name)
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{
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#ifdef HAVE_DOSISH_SYSTEM
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char *p;
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if (strchr (name, '\\'))
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{
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for (p=name; *p; p++)
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if (*p == '/')
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*p = '\\';
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}
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#endif /*HAVE_DOSISH_SYSTEM*/
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return name;
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}
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/*
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* Look for the substring SUB in buffer and return a pointer to that
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* substring in BUFFER or NULL if not found.
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* Comparison is case-insensitive.
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*/
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const char *
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memistr (const void *buffer, size_t buflen, const char *sub)
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{
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const unsigned char *buf = buffer;
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const unsigned char *t = (const unsigned char *)buffer;
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const unsigned char *s = (const unsigned char *)sub;
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size_t n = buflen;
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for ( ; n ; t++, n-- )
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{
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if ( toupper (*t) == toupper (*s) )
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{
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for ( buf=t++, buflen = n--, s++;
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n && toupper (*t) == toupper (*s); t++, s++, n-- )
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;
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if (!*s)
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return (const char*)buf;
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t = buf;
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s = (const unsigned char *)sub ;
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n = buflen;
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}
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}
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return NULL;
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}
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const char *
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ascii_memistr ( const void *buffer, size_t buflen, const char *sub )
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{
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const unsigned char *buf = buffer;
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const unsigned char *t = (const unsigned char *)buf;
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const unsigned char *s = (const unsigned char *)sub;
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size_t n = buflen;
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for ( ; n ; t++, n-- )
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{
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if (ascii_toupper (*t) == ascii_toupper (*s) )
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{
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for ( buf=t++, buflen = n--, s++;
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n && ascii_toupper (*t) == ascii_toupper (*s); t++, s++, n-- )
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;
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if (!*s)
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return (const char*)buf;
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t = (const unsigned char *)buf;
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s = (const unsigned char *)sub ;
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n = buflen;
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}
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}
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return NULL;
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}
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/* This function is similar to strncpy(). However it won't copy more
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than N - 1 characters and makes sure that a '\0' is appended. With
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N given as 0, nothing will happen. With DEST given as NULL, memory
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will be allocated using jnlib_xmalloc (i.e. if it runs out of core
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the function terminates). Returns DES or a pointer to the
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allocated memory.
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*/
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char *
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mem2str( char *dest , const void *src , size_t n )
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{
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char *d;
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const char *s;
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if( n ) {
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if( !dest )
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dest = jnlib_xmalloc( n ) ;
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d = dest;
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s = src ;
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for(n--; n && *s; n-- )
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*d++ = *s++;
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*d = '\0' ;
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}
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return dest ;
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}
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/****************
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* remove leading and trailing white spaces
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*/
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char *
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trim_spaces( char *str )
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{
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char *string, *p, *mark;
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string = str;
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/* find first non space character */
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for( p=string; *p && isspace( *(byte*)p ) ; p++ )
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;
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/* move characters */
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for( (mark = NULL); (*string = *p); string++, p++ )
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if( isspace( *(byte*)p ) ) {
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if( !mark )
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mark = string ;
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}
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else
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mark = NULL ;
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if( mark )
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*mark = '\0' ; /* remove trailing spaces */
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return str ;
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}
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/****************
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* remove trailing white spaces
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*/
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char *
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trim_trailing_spaces( char *string )
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{
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char *p, *mark;
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for( mark = NULL, p = string; *p; p++ ) {
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if( isspace( *(byte*)p ) ) {
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if( !mark )
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mark = p;
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}
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else
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mark = NULL;
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}
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if( mark )
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*mark = '\0' ;
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return string ;
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}
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unsigned
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trim_trailing_chars( byte *line, unsigned len, const char *trimchars )
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{
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byte *p, *mark;
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unsigned n;
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for(mark=NULL, p=line, n=0; n < len; n++, p++ ) {
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if( strchr(trimchars, *p ) ) {
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if( !mark )
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mark = p;
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}
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else
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mark = NULL;
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}
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if( mark ) {
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*mark = 0;
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return mark - line;
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}
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return len;
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}
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/****************
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* remove trailing white spaces and return the length of the buffer
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*/
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unsigned
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trim_trailing_ws( byte *line, unsigned len )
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{
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return trim_trailing_chars( line, len, " \t\r\n" );
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}
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size_t
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length_sans_trailing_chars (const unsigned char *line, size_t len,
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const char *trimchars )
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{
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const unsigned char *p, *mark;
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size_t n;
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for( mark=NULL, p=line, n=0; n < len; n++, p++ )
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{
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if (strchr (trimchars, *p ))
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{
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if( !mark )
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mark = p;
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}
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else
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mark = NULL;
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}
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if (mark)
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return mark - line;
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return len;
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}
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/*
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* Return the length of line ignoring trailing white-space.
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*/
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size_t
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length_sans_trailing_ws (const unsigned char *line, size_t len)
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{
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return length_sans_trailing_chars (line, len, " \t\r\n");
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}
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/*
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* Extract from a given path the filename component. This function
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* terminates the process on memory shortage.
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*/
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char *
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make_basename(const char *filepath, const char *inputpath)
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{
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#ifdef __riscos__
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return riscos_make_basename(filepath, inputpath);
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#else
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char *p;
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(void)inputpath; /* Only required for riscos. */
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if ( !(p=strrchr(filepath, '/')) )
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#ifdef HAVE_DOSISH_SYSTEM
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if ( !(p=strrchr(filepath, '\\')) )
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#endif
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#ifdef HAVE_DRIVE_LETTERS
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if ( !(p=strrchr(filepath, ':')) )
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#endif
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{
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return jnlib_xstrdup(filepath);
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}
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return jnlib_xstrdup(p+1);
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#endif
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}
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/*
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* Extract from a given filename the path prepended to it. If there
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* isn't a path prepended to the filename, a dot is returned ('.').
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* This function terminates the process on memory shortage.
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*/
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char *
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make_dirname(const char *filepath)
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{
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char *dirname;
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int dirname_length;
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char *p;
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if ( !(p=strrchr(filepath, '/')) )
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#ifdef HAVE_DOSISH_SYSTEM
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if ( !(p=strrchr(filepath, '\\')) )
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#endif
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#ifdef HAVE_DRIVE_LETTERS
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if ( !(p=strrchr(filepath, ':')) )
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#endif
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{
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return jnlib_xstrdup(".");
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}
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dirname_length = p-filepath;
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dirname = jnlib_xmalloc(dirname_length+1);
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strncpy(dirname, filepath, dirname_length);
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dirname[dirname_length] = 0;
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return dirname;
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}
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static char *
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get_pwdir (int xmode, const char *name)
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{
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char *result = NULL;
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#ifdef HAVE_PWD_H
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struct passwd *pwd = NULL;
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if (name)
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{
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#ifdef HAVE_GETPWNAM
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/* Fixme: We should use getpwnam_r if available. */
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pwd = getpwnam (name);
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#endif
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}
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else
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{
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#ifdef HAVE_GETPWUID
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/* Fixme: We should use getpwuid_r if available. */
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pwd = getpwuid (getuid());
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#endif
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}
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if (pwd)
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{
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if (xmode)
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result = jnlib_xstrdup (pwd->pw_dir);
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else
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result = jnlib_strdup (pwd->pw_dir);
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}
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#else /*!HAVE_PWD_H*/
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/* No support at all. */
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(void)xmode;
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(void)name;
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#endif /*HAVE_PWD_H*/
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return result;
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}
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static char *
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do_make_filename (int xmode, const char *first_part, va_list arg_ptr)
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{
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||
const char *argv[32];
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int argc;
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size_t n;
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int skip = 1;
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char *home_buffer = NULL;
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char *name, *home, *p;
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n = strlen (first_part) + 1;
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argc = 0;
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while ( (argv[argc] = va_arg (arg_ptr, const char *)) )
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{
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n += strlen (argv[argc]) + 1;
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if (argc >= DIM (argv)-1)
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{
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||
if (xmode)
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BUG ();
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jnlib_set_errno (EINVAL);
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||
return NULL;
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||
}
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argc++;
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||
}
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n++;
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||
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home = NULL;
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||
if (*first_part == '~')
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||
{
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||
if (first_part[1] == '/' || !first_part[1])
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{
|
||
/* This is the "~/" or "~" case. */
|
||
home = getenv("HOME");
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||
if (!home)
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home = home_buffer = get_pwdir (xmode, NULL);
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if (home && *home)
|
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n += strlen (home);
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||
}
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||
else
|
||
{
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||
/* This is the "~username/" or "~username" case. */
|
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char *user;
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||
|
||
if (xmode)
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user = jnlib_xstrdup (first_part+1);
|
||
else
|
||
{
|
||
user = jnlib_strdup (first_part+1);
|
||
if (!user)
|
||
return NULL;
|
||
}
|
||
p = strchr (user, '/');
|
||
if (p)
|
||
*p = 0;
|
||
skip = 1 + strlen (user);
|
||
|
||
home = home_buffer = get_pwdir (xmode, user);
|
||
jnlib_free (user);
|
||
if (home)
|
||
n += strlen (home);
|
||
else
|
||
skip = 1;
|
||
}
|
||
}
|
||
|
||
if (xmode)
|
||
name = jnlib_xmalloc (n);
|
||
else
|
||
{
|
||
name = jnlib_malloc (n);
|
||
if (!name)
|
||
{
|
||
jnlib_free (home_buffer);
|
||
return NULL;
|
||
}
|
||
}
|
||
|
||
if (home)
|
||
p = stpcpy (stpcpy (name, home), first_part + skip);
|
||
else
|
||
p = stpcpy (name, first_part);
|
||
|
||
jnlib_free (home_buffer);
|
||
|
||
for (argc=0; argv[argc]; argc++)
|
||
p = stpcpy (stpcpy (p, "/"), argv[argc]);
|
||
|
||
return change_slashes (name);
|
||
}
|
||
|
||
/* Construct a filename from the NULL terminated list of parts. Tilde
|
||
expansion is done for the first argument. This function terminates
|
||
the process on memory shortage. */
|
||
char *
|
||
make_filename (const char *first_part, ... )
|
||
{
|
||
va_list arg_ptr;
|
||
char *result;
|
||
|
||
va_start (arg_ptr, first_part);
|
||
result = do_make_filename (1, first_part, arg_ptr);
|
||
va_end (arg_ptr);
|
||
return result;
|
||
}
|
||
|
||
/* Construct a filename from the NULL terminated list of parts. Tilde
|
||
expansion is done for the first argument. This function may return
|
||
NULL on error. */
|
||
char *
|
||
make_filename_try (const char *first_part, ... )
|
||
{
|
||
va_list arg_ptr;
|
||
char *result;
|
||
|
||
va_start (arg_ptr, first_part);
|
||
result = do_make_filename (0, first_part, arg_ptr);
|
||
va_end (arg_ptr);
|
||
return result;
|
||
}
|
||
|
||
|
||
|
||
/* Compare whether the filenames are identical. This is a
|
||
special version of strcmp() taking the semantics of filenames in
|
||
account. Note that this function works only on the supplied names
|
||
without considering any context like the current directory. See
|
||
also same_file_p(). */
|
||
int
|
||
compare_filenames (const char *a, const char *b)
|
||
{
|
||
#ifdef HAVE_DOSISH_SYSTEM
|
||
for ( ; *a && *b; a++, b++ )
|
||
{
|
||
if (*a != *b
|
||
&& (toupper (*(const unsigned char*)a)
|
||
!= toupper (*(const unsigned char*)b) )
|
||
&& !((*a == '/' && *b == '\\') || (*a == '\\' && *b == '/')))
|
||
break;
|
||
}
|
||
if ((*a == '/' && *b == '\\') || (*a == '\\' && *b == '/'))
|
||
return 0;
|
||
else
|
||
return (toupper (*(const unsigned char*)a)
|
||
- toupper (*(const unsigned char*)b));
|
||
#else
|
||
return strcmp(a,b);
|
||
#endif
|
||
}
|
||
|
||
|
||
/* Convert 2 hex characters at S to a byte value. Return this value
|
||
or -1 if there is an error. */
|
||
int
|
||
hextobyte (const char *s)
|
||
{
|
||
int c;
|
||
|
||
if ( *s >= '0' && *s <= '9' )
|
||
c = 16 * (*s - '0');
|
||
else if ( *s >= 'A' && *s <= 'F' )
|
||
c = 16 * (10 + *s - 'A');
|
||
else if ( *s >= 'a' && *s <= 'f' )
|
||
c = 16 * (10 + *s - 'a');
|
||
else
|
||
return -1;
|
||
s++;
|
||
if ( *s >= '0' && *s <= '9' )
|
||
c += *s - '0';
|
||
else if ( *s >= 'A' && *s <= 'F' )
|
||
c += 10 + *s - 'A';
|
||
else if ( *s >= 'a' && *s <= 'f' )
|
||
c += 10 + *s - 'a';
|
||
else
|
||
return -1;
|
||
return c;
|
||
}
|
||
|
||
|
||
/* Print a BUFFER to stream FP while replacing all control characters
|
||
and the characters DELIM and DELIM2 with standard C escape
|
||
sequences. Returns the number of characters printed. */
|
||
size_t
|
||
print_sanitized_buffer2 (FILE *fp, const void *buffer, size_t length,
|
||
int delim, int delim2)
|
||
{
|
||
const unsigned char *p = buffer;
|
||
size_t count = 0;
|
||
|
||
for (; length; length--, p++, count++)
|
||
{
|
||
if (*p < 0x20
|
||
|| *p == 0x7f
|
||
|| *p == delim
|
||
|| *p == delim2
|
||
|| ((delim || delim2) && *p=='\\'))
|
||
{
|
||
putc ('\\', fp);
|
||
count++;
|
||
if (*p == '\n')
|
||
{
|
||
putc ('n', fp);
|
||
count++;
|
||
}
|
||
else if (*p == '\r')
|
||
{
|
||
putc ('r', fp);
|
||
count++;
|
||
}
|
||
else if (*p == '\f')
|
||
{
|
||
putc ('f', fp);
|
||
count++;
|
||
}
|
||
else if (*p == '\v')
|
||
{
|
||
putc ('v', fp);
|
||
count++;
|
||
}
|
||
else if (*p == '\b')
|
||
{
|
||
putc ('b', fp);
|
||
count++;
|
||
}
|
||
else if (!*p)
|
||
{
|
||
putc('0', fp);
|
||
count++;
|
||
}
|
||
else
|
||
{
|
||
fprintf (fp, "x%02x", *p);
|
||
count += 3;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
putc (*p, fp);
|
||
count++;
|
||
}
|
||
}
|
||
|
||
return count;
|
||
}
|
||
|
||
/* Same as print_sanitized_buffer2 but with just one delimiter. */
|
||
size_t
|
||
print_sanitized_buffer (FILE *fp, const void *buffer, size_t length,
|
||
int delim)
|
||
{
|
||
return print_sanitized_buffer2 (fp, buffer, length, delim, 0);
|
||
}
|
||
|
||
|
||
size_t
|
||
print_sanitized_utf8_buffer (FILE *fp, const void *buffer,
|
||
size_t length, int delim)
|
||
{
|
||
const char *p = buffer;
|
||
size_t i;
|
||
|
||
/* We can handle plain ascii simpler, so check for it first. */
|
||
for (i=0; i < length; i++ )
|
||
{
|
||
if ( (p[i] & 0x80) )
|
||
break;
|
||
}
|
||
if (i < length)
|
||
{
|
||
char *buf = utf8_to_native (p, length, delim);
|
||
/*(utf8 conversion already does the control character quoting)*/
|
||
i = strlen (buf);
|
||
fputs (buf, fp);
|
||
jnlib_free (buf);
|
||
return i;
|
||
}
|
||
else
|
||
return print_sanitized_buffer (fp, p, length, delim);
|
||
}
|
||
|
||
|
||
size_t
|
||
print_sanitized_string2 (FILE *fp, const char *string, int delim, int delim2)
|
||
{
|
||
return string? print_sanitized_buffer2 (fp, string, strlen (string),
|
||
delim, delim2):0;
|
||
}
|
||
|
||
size_t
|
||
print_sanitized_string (FILE *fp, const char *string, int delim)
|
||
{
|
||
return string? print_sanitized_buffer (fp, string, strlen (string), delim):0;
|
||
}
|
||
|
||
size_t
|
||
print_sanitized_utf8_string (FILE *fp, const char *string, int delim)
|
||
{
|
||
return string? print_sanitized_utf8_buffer (fp,
|
||
string, strlen (string),
|
||
delim) : 0;
|
||
}
|
||
|
||
/* Create a string from the buffer P_ARG of length N which is suitable
|
||
for printing. Caller must release the created string using xfree.
|
||
This function terminates the process on memory shortage. */
|
||
char *
|
||
sanitize_buffer (const void *p_arg, size_t n, int delim)
|
||
{
|
||
const unsigned char *p = p_arg;
|
||
size_t save_n, buflen;
|
||
const unsigned char *save_p;
|
||
char *buffer, *d;
|
||
|
||
/* First count length. */
|
||
for (save_n = n, save_p = p, buflen=1 ; n; n--, p++ )
|
||
{
|
||
if ( *p < 0x20 || *p == 0x7f || *p == delim || (delim && *p=='\\'))
|
||
{
|
||
if ( *p=='\n' || *p=='\r' || *p=='\f'
|
||
|| *p=='\v' || *p=='\b' || !*p )
|
||
buflen += 2;
|
||
else
|
||
buflen += 5;
|
||
}
|
||
else
|
||
buflen++;
|
||
}
|
||
p = save_p;
|
||
n = save_n;
|
||
/* And now make the string */
|
||
d = buffer = jnlib_xmalloc( buflen );
|
||
for ( ; n; n--, p++ )
|
||
{
|
||
if (*p < 0x20 || *p == 0x7f || *p == delim || (delim && *p=='\\')) {
|
||
*d++ = '\\';
|
||
if( *p == '\n' )
|
||
*d++ = 'n';
|
||
else if( *p == '\r' )
|
||
*d++ = 'r';
|
||
else if( *p == '\f' )
|
||
*d++ = 'f';
|
||
else if( *p == '\v' )
|
||
*d++ = 'v';
|
||
else if( *p == '\b' )
|
||
*d++ = 'b';
|
||
else if( !*p )
|
||
*d++ = '0';
|
||
else {
|
||
sprintf(d, "x%02x", *p );
|
||
d += 3;
|
||
}
|
||
}
|
||
else
|
||
*d++ = *p;
|
||
}
|
||
*d = 0;
|
||
return buffer;
|
||
}
|
||
|
||
|
||
/* Given a string containing an UTF-8 encoded text, return the number
|
||
of characters in this string. It differs from strlen in that it
|
||
only counts complete UTF-8 characters. Note, that this function
|
||
does not take combined characters into account. */
|
||
size_t
|
||
utf8_charcount (const char *s)
|
||
{
|
||
size_t n;
|
||
|
||
for (n=0; *s; s++)
|
||
if ( (*s&0xc0) != 0x80 ) /* Exclude continuation bytes: 10xxxxxx */
|
||
n++;
|
||
|
||
return n;
|
||
}
|
||
|
||
|
||
/****************************************************
|
||
********** W32 specific functions ****************
|
||
****************************************************/
|
||
|
||
#ifdef HAVE_W32_SYSTEM
|
||
const char *
|
||
w32_strerror (int ec)
|
||
{
|
||
static char strerr[256];
|
||
|
||
if (ec == -1)
|
||
ec = (int)GetLastError ();
|
||
#ifdef HAVE_W32CE_SYSTEM
|
||
/* There is only a wchar_t FormatMessage. It does not make much
|
||
sense to play the conversion game; we print only the code. */
|
||
snprintf (strerr, sizeof strerr, "ec=%d", (int)GetLastError ());
|
||
#else
|
||
FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, ec,
|
||
MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
|
||
strerr, DIM (strerr)-1, NULL);
|
||
#endif
|
||
return strerr;
|
||
}
|
||
#endif /*HAVE_W32_SYSTEM*/
|
||
|
||
|
||
/****************************************************
|
||
******** Locale insensitive ctype functions ********
|
||
****************************************************/
|
||
/* FIXME: replace them by a table lookup and macros */
|
||
int
|
||
ascii_isupper (int c)
|
||
{
|
||
return c >= 'A' && c <= 'Z';
|
||
}
|
||
|
||
int
|
||
ascii_islower (int c)
|
||
{
|
||
return c >= 'a' && c <= 'z';
|
||
}
|
||
|
||
int
|
||
ascii_toupper (int c)
|
||
{
|
||
if (c >= 'a' && c <= 'z')
|
||
c &= ~0x20;
|
||
return c;
|
||
}
|
||
|
||
int
|
||
ascii_tolower (int c)
|
||
{
|
||
if (c >= 'A' && c <= 'Z')
|
||
c |= 0x20;
|
||
return c;
|
||
}
|
||
|
||
|
||
int
|
||
ascii_strcasecmp( const char *a, const char *b )
|
||
{
|
||
if (a == b)
|
||
return 0;
|
||
|
||
for (; *a && *b; a++, b++) {
|
||
if (*a != *b && ascii_toupper(*a) != ascii_toupper(*b))
|
||
break;
|
||
}
|
||
return *a == *b? 0 : (ascii_toupper (*a) - ascii_toupper (*b));
|
||
}
|
||
|
||
int
|
||
ascii_strncasecmp (const char *a, const char *b, size_t n)
|
||
{
|
||
const unsigned char *p1 = (const unsigned char *)a;
|
||
const unsigned char *p2 = (const unsigned char *)b;
|
||
unsigned char c1, c2;
|
||
|
||
if (p1 == p2 || !n )
|
||
return 0;
|
||
|
||
do
|
||
{
|
||
c1 = ascii_tolower (*p1);
|
||
c2 = ascii_tolower (*p2);
|
||
|
||
if ( !--n || c1 == '\0')
|
||
break;
|
||
|
||
++p1;
|
||
++p2;
|
||
}
|
||
while (c1 == c2);
|
||
|
||
return c1 - c2;
|
||
}
|
||
|
||
|
||
int
|
||
ascii_memcasecmp (const void *a_arg, const void *b_arg, size_t n )
|
||
{
|
||
const char *a = a_arg;
|
||
const char *b = b_arg;
|
||
|
||
if (a == b)
|
||
return 0;
|
||
for ( ; n; n--, a++, b++ )
|
||
{
|
||
if( *a != *b && ascii_toupper (*a) != ascii_toupper (*b) )
|
||
return *a == *b? 0 : (ascii_toupper (*a) - ascii_toupper (*b));
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
ascii_strcmp( const char *a, const char *b )
|
||
{
|
||
if (a == b)
|
||
return 0;
|
||
|
||
for (; *a && *b; a++, b++) {
|
||
if (*a != *b )
|
||
break;
|
||
}
|
||
return *a == *b? 0 : (*(signed char *)a - *(signed char *)b);
|
||
}
|
||
|
||
|
||
void *
|
||
ascii_memcasemem (const void *haystack, size_t nhaystack,
|
||
const void *needle, size_t nneedle)
|
||
{
|
||
|
||
if (!nneedle)
|
||
return (void*)haystack; /* finding an empty needle is really easy */
|
||
if (nneedle <= nhaystack)
|
||
{
|
||
const char *a = haystack;
|
||
const char *b = a + nhaystack - nneedle;
|
||
|
||
for (; a <= b; a++)
|
||
{
|
||
if ( !ascii_memcasecmp (a, needle, nneedle) )
|
||
return (void *)a;
|
||
}
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
/*********************************************
|
||
********** missing string functions *********
|
||
*********************************************/
|
||
|
||
#ifndef HAVE_STPCPY
|
||
char *
|
||
stpcpy(char *a,const char *b)
|
||
{
|
||
while( *b )
|
||
*a++ = *b++;
|
||
*a = 0;
|
||
|
||
return (char*)a;
|
||
}
|
||
#endif
|
||
|
||
#ifndef HAVE_STRSEP
|
||
/* Code taken from glibc-2.2.1/sysdeps/generic/strsep.c. */
|
||
char *
|
||
strsep (char **stringp, const char *delim)
|
||
{
|
||
char *begin, *end;
|
||
|
||
begin = *stringp;
|
||
if (begin == NULL)
|
||
return NULL;
|
||
|
||
/* A frequent case is when the delimiter string contains only one
|
||
character. Here we don't need to call the expensive `strpbrk'
|
||
function and instead work using `strchr'. */
|
||
if (delim[0] == '\0' || delim[1] == '\0')
|
||
{
|
||
char ch = delim[0];
|
||
|
||
if (ch == '\0')
|
||
end = NULL;
|
||
else
|
||
{
|
||
if (*begin == ch)
|
||
end = begin;
|
||
else if (*begin == '\0')
|
||
end = NULL;
|
||
else
|
||
end = strchr (begin + 1, ch);
|
||
}
|
||
}
|
||
else
|
||
/* Find the end of the token. */
|
||
end = strpbrk (begin, delim);
|
||
|
||
if (end)
|
||
{
|
||
/* Terminate the token and set *STRINGP past NUL character. */
|
||
*end++ = '\0';
|
||
*stringp = end;
|
||
}
|
||
else
|
||
/* No more delimiters; this is the last token. */
|
||
*stringp = NULL;
|
||
|
||
return begin;
|
||
}
|
||
#endif /*HAVE_STRSEP*/
|
||
|
||
|
||
#ifndef HAVE_STRLWR
|
||
char *
|
||
strlwr(char *s)
|
||
{
|
||
char *p;
|
||
for(p=s; *p; p++ )
|
||
*p = tolower(*p);
|
||
return s;
|
||
}
|
||
#endif
|
||
|
||
|
||
#ifndef HAVE_STRCASECMP
|
||
int
|
||
strcasecmp( const char *a, const char *b )
|
||
{
|
||
for( ; *a && *b; a++, b++ ) {
|
||
if( *a != *b && toupper(*a) != toupper(*b) )
|
||
break;
|
||
}
|
||
return *(const byte*)a - *(const byte*)b;
|
||
}
|
||
#endif
|
||
|
||
|
||
/****************
|
||
* mingw32/cpd has a memicmp()
|
||
*/
|
||
#ifndef HAVE_MEMICMP
|
||
int
|
||
memicmp( const char *a, const char *b, size_t n )
|
||
{
|
||
for( ; n; n--, a++, b++ )
|
||
if( *a != *b && toupper(*(const byte*)a) != toupper(*(const byte*)b) )
|
||
return *(const byte *)a - *(const byte*)b;
|
||
return 0;
|
||
}
|
||
#endif
|
||
|
||
|
||
#ifndef HAVE_MEMRCHR
|
||
void *
|
||
memrchr (const void *buffer, int c, size_t n)
|
||
{
|
||
const unsigned char *p = buffer;
|
||
|
||
for (p += n; n ; n--)
|
||
if (*--p == c)
|
||
return (void *)p;
|
||
return NULL;
|
||
}
|
||
#endif /*HAVE_MEMRCHR*/
|
||
|
||
|
||
/* Percent-escape the string STR by replacing colons with '%3a'. If
|
||
EXTRA is not NULL all characters in EXTRA are also escaped. */
|
||
static char *
|
||
do_percent_escape (const char *str, const char *extra, int die)
|
||
{
|
||
int i, j;
|
||
char *ptr;
|
||
|
||
if (!str)
|
||
return NULL;
|
||
|
||
for (i=j=0; str[i]; i++)
|
||
if (str[i] == ':' || str[i] == '%' || (extra && strchr (extra, str[i])))
|
||
j++;
|
||
if (die)
|
||
ptr = jnlib_xmalloc (i + 2 * j + 1);
|
||
else
|
||
{
|
||
ptr = jnlib_malloc (i + 2 * j + 1);
|
||
if (!ptr)
|
||
return NULL;
|
||
}
|
||
i = 0;
|
||
while (*str)
|
||
{
|
||
if (*str == ':')
|
||
{
|
||
ptr[i++] = '%';
|
||
ptr[i++] = '3';
|
||
ptr[i++] = 'a';
|
||
}
|
||
else if (*str == '%')
|
||
{
|
||
ptr[i++] = '%';
|
||
ptr[i++] = '2';
|
||
ptr[i++] = '5';
|
||
}
|
||
else if (extra && strchr (extra, *str))
|
||
{
|
||
ptr[i++] = '%';
|
||
ptr[i++] = tohex_lower ((*str>>4)&15);
|
||
ptr[i++] = tohex_lower (*str&15);
|
||
}
|
||
else
|
||
ptr[i++] = *str;
|
||
str++;
|
||
}
|
||
ptr[i] = '\0';
|
||
|
||
return ptr;
|
||
}
|
||
|
||
/* Percent-escape the string STR by replacing colons with '%3a'. If
|
||
EXTRA is not NULL all characters in EXTRA are also escaped. This
|
||
function terminates the process on memory shortage. */
|
||
char *
|
||
percent_escape (const char *str, const char *extra)
|
||
{
|
||
return do_percent_escape (str, extra, 1);
|
||
}
|
||
|
||
/* Same as percent_escape but return NULL instead of exiting on memory
|
||
error. */
|
||
char *
|
||
try_percent_escape (const char *str, const char *extra)
|
||
{
|
||
return do_percent_escape (str, extra, 0);
|
||
}
|
||
|
||
|
||
|
||
static char *
|
||
do_strconcat (const char *s1, va_list arg_ptr)
|
||
{
|
||
const char *argv[48];
|
||
size_t argc;
|
||
size_t needed;
|
||
char *buffer, *p;
|
||
|
||
argc = 0;
|
||
argv[argc++] = s1;
|
||
needed = strlen (s1);
|
||
while (((argv[argc] = va_arg (arg_ptr, const char *))))
|
||
{
|
||
needed += strlen (argv[argc]);
|
||
if (argc >= DIM (argv)-1)
|
||
{
|
||
jnlib_set_errno (EINVAL);
|
||
return NULL;
|
||
}
|
||
argc++;
|
||
}
|
||
needed++;
|
||
buffer = jnlib_malloc (needed);
|
||
if (buffer)
|
||
{
|
||
for (p = buffer, argc=0; argv[argc]; argc++)
|
||
p = stpcpy (p, argv[argc]);
|
||
}
|
||
return buffer;
|
||
}
|
||
|
||
|
||
/* Concatenate the string S1 with all the following strings up to a
|
||
NULL. Returns a malloced buffer with the new string or NULL on a
|
||
malloc error or if too many arguments are given. */
|
||
char *
|
||
strconcat (const char *s1, ...)
|
||
{
|
||
va_list arg_ptr;
|
||
char *result;
|
||
|
||
if (!s1)
|
||
result = jnlib_strdup ("");
|
||
else
|
||
{
|
||
va_start (arg_ptr, s1);
|
||
result = do_strconcat (s1, arg_ptr);
|
||
va_end (arg_ptr);
|
||
}
|
||
return result;
|
||
}
|
||
|
||
/* Same as strconcat but terminate the process with an error message
|
||
if something goes wrong. */
|
||
char *
|
||
xstrconcat (const char *s1, ...)
|
||
{
|
||
va_list arg_ptr;
|
||
char *result;
|
||
|
||
if (!s1)
|
||
result = jnlib_xstrdup ("");
|
||
else
|
||
{
|
||
va_start (arg_ptr, s1);
|
||
result = do_strconcat (s1, arg_ptr);
|
||
va_end (arg_ptr);
|
||
}
|
||
if (!result)
|
||
{
|
||
if (errno == EINVAL)
|
||
fputs ("\nfatal: too many args for xstrconcat\n", stderr);
|
||
else
|
||
fputs ("\nfatal: out of memory\n", stderr);
|
||
exit (2);
|
||
}
|
||
return result;
|
||
}
|