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/*
Unix SMB/Netbios implementation.
Version 3.0
client string routines
Copyright (C) Andrew Tridgell 2001
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define NO_SYSLOG
#include "includes.h"
/****************************************************************************
copy a string from a char* src to a unicode or ascii
dos code page destination choosing unicode or ascii based on the
cli->capabilities flag
return the number of bytes occupied by the string in the destination
flags can have:
CLISTR_TERMINATE means include the null termination
CLISTR_CONVERT means convert from unix to dos codepage
CLISTR_UPPER means uppercase in the destination
CLISTR_ASCII use ascii even with unicode servers
dest_len is the maximum length allowed in the destination. If dest_len
is -1 then no maxiumum is used
****************************************************************************/
int clistr_push(struct cli_state *cli, void *dest, const char *src, int dest_len, int flags)
{
int len=0;
/* treat a pstring as "unlimited" length */
if (dest_len == -1) {
dest_len = sizeof(pstring);
}
if (!(flags & CLISTR_ASCII) && clistr_align(cli, PTR_DIFF(dest, cli->outbuf))) {
*(char *)dest = 0;
dest++;
dest_len--;
len++;
}
if ((flags & CLISTR_ASCII) || !(cli->capabilities & CAP_UNICODE)) {
/* the server doesn't want unicode */
safe_strcpy(dest, src, dest_len);
len = strlen(dest);
if (flags & CLISTR_TERMINATE) len++;
if (flags & CLISTR_CONVERT) unix_to_dos(dest,True);
if (flags & CLISTR_UPPER) strupper(dest);
return len;
}
/* the server likes unicode. give it the works */
if (flags & CLISTR_CONVERT) {
dos_PutUniCode(dest, src, dest_len, flags & CLISTR_TERMINATE);
} else {
ascii_to_unistr(dest, src, dest_len);
}
if (flags & CLISTR_UPPER) {
strupper_w(dest);
}
len += strlen(src)*2;
if (flags & CLISTR_TERMINATE) len += 2;
return len;
}
/****************************************************************************
return the length that a string would occupy when copied with clistr_push()
CLISTR_TERMINATE means include the null termination
CLISTR_CONVERT means convert from unix to dos codepage
CLISTR_UPPER means uppercase in the destination
note that dest is only used for alignment purposes. No data is written.
****************************************************************************/
int clistr_push_size(struct cli_state *cli, const void *dest, const char *src, int dest_len, int flags)
{
int len = strlen(src);
if (flags & CLISTR_TERMINATE) len++;
if (!(flags & CLISTR_ASCII) && (cli->capabilities & CAP_UNICODE)) len *= 2;
if (!(flags & CLISTR_ASCII) && dest && clistr_align(cli, PTR_DIFF(cli->outbuf, dest))) {
len++;
}
return len;
}
/****************************************************************************
copy a string from a unicode or ascii source (depending on
cli->capabilities) to a char* destination
flags can have:
CLISTR_CONVERT means convert from dos to unix codepage
CLISTR_TERMINATE means the string in src is null terminated
CLISTR_UNICODE means to force as unicode
if CLISTR_TERMINATE is set then src_len is ignored
src_len is the length of the source area in bytes
return the number of bytes occupied by the string in src
****************************************************************************/
int clistr_pull(struct cli_state *cli, char *dest, const void *src, int dest_len, int src_len, int flags)
{
int len;
if (dest_len == -1) {
dest_len = sizeof(pstring);
}
if (clistr_align(cli, PTR_DIFF(src, cli->inbuf))) {
src++;
if (src_len > 0) src_len--;
}
if (!(flags & CLISTR_UNICODE) && !(cli->capabilities & CAP_UNICODE)) {
/* the server doesn't want unicode */
if (flags & CLISTR_TERMINATE) {
safe_strcpy(dest, src, dest_len);
len = strlen(src)+1;
} else {
if (src_len > dest_len) src_len = dest_len;
len = src_len;
memcpy(dest, src, len);
dest[len] = 0;
}
if (flags & CLISTR_CONVERT) dos_to_unix(dest,True);
return len;
}
if (flags & CLISTR_TERMINATE) {
unistr_to_ascii(dest, src, dest_len);
len = strlen(dest)*2 + 2;
} else {
int i, c;
if (dest_len*2 < src_len) src_len = 2*dest_len;
for (i=0; i < src_len; i += 2) {
c = SVAL(src, i);
*dest++ = c;
}
*dest++ = 0;
len = src_len;
}
if (flags & CLISTR_CONVERT) dos_to_unix(dest,True);
return len;
}
/****************************************************************************
return the length that a string would occupy (not including the null)
when copied with clistr_pull()
if src_len is -1 then assume the source is null terminated
****************************************************************************/
int clistr_pull_size(struct cli_state *cli, const void *src, int src_len)
{
if (clistr_align(cli, PTR_DIFF(src, cli->inbuf))) {
src++;
if (src_len > 0) src_len--;
}
if (!(cli->capabilities & CAP_UNICODE)) {
return strlen(src);
}
return strlen_w(src);
}
/****************************************************************************
return an alignment of either 0 or 1
if unicode is not negotiated then return 0
otherwise return 1 if offset is off
****************************************************************************/
int clistr_align(struct cli_state *cli, int offset)
{
if (!(cli->capabilities & CAP_UNICODE)) return 0;
return offset & 1;
}
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