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/*
Unix SMB/CIFS implementation.
Samba utility functions
Copyright (C) Andrew Tridgell 1992-2001
Copyright (C) Simo Sorce 2001-2002
Copyright (C) Martin Pool 2003
Copyright (C) James Peach 2006
Copyright (C) Jeremy Allison 1992-2007
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
void fstring_sub(char *s,const char *pattern,const char *insert)
{
string_sub(s, pattern, insert, sizeof(fstring));
}
/**
Similar to string_sub2, but it will accept only allocated strings
and may realloc them so pay attention at what you pass on no
pointers inside strings, no const may be passed
as string.
**/
char *realloc_string_sub2(char *string,
const char *pattern,
const char *insert,
bool remove_unsafe_characters,
bool allow_trailing_dollar)
{
char *p, *in;
char *s;
ssize_t ls,lp,li,ld, i;
if (!insert || !pattern || !*pattern || !string || !*string)
return NULL;
s = string;
in = talloc_strdup(talloc_tos(), insert);
if (!in) {
DEBUG(0, ("realloc_string_sub: out of memory!\n"));
return NULL;
}
ls = (ssize_t)strlen(s);
lp = (ssize_t)strlen(pattern);
li = (ssize_t)strlen(insert);
ld = li - lp;
for (i=0;i<li;i++) {
switch (in[i]) {
case '$':
/* allow a trailing $
* (as in machine accounts) */
if (allow_trailing_dollar && (i == li - 1 )) {
break;
}
FALL_THROUGH;
case '`':
case '"':
case '\'':
case ';':
case '%':
case '\r':
case '\n':
if ( remove_unsafe_characters ) {
in[i] = '_';
break;
}
FALL_THROUGH;
default:
/* ok */
break;
}
}
while ((p = strstr_m(s,pattern))) {
if (ld > 0) {
int offset = PTR_DIFF(s,string);
string = talloc_realloc(NULL, string, char, ls + ld + 1);
if (!string) {
DEBUG(0, ("realloc_string_sub: "
"out of memory!\n"));
talloc_free(in);
return NULL;
}
p = string + offset + (p - s);
}
if (li != lp) {
memmove(p+li,p+lp,strlen(p+lp)+1);
}
memcpy(p, in, li);
s = p + li;
ls += ld;
}
talloc_free(in);
return string;
}
char *realloc_string_sub(char *string,
const char *pattern,
const char *insert)
{
return realloc_string_sub2(string, pattern, insert, true, false);
}
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