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73b377432c
Using the standard macro makes it easier to move code into common, as TALLOC_REALLOC_ARRAY isn't standard talloc. Andrew Bartlett
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/*
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Unix SMB/CIFS implementation.
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server specific string routines
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Copyright (C) Andrew Tridgell 2001
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Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "smbd/smbd.h"
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#include "smbd/globals.h"
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/* Make sure we can't write a string past the end of the buffer */
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size_t srvstr_push_fn(const char *base_ptr, uint16 smb_flags2, void *dest,
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const char *src, int dest_len, int flags)
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{
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if (dest_len < 0) {
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return 0;
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}
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/* 'normal' push into size-specified buffer */
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return push_string_base(base_ptr, smb_flags2, dest, src,
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dest_len, flags);
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}
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/*******************************************************************
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Add a string to the end of a smb_buf, adjusting bcc and smb_len.
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Return the bytes added
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********************************************************************/
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ssize_t message_push_string(uint8 **outbuf, const char *str, int flags)
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{
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size_t buf_size = smb_len(*outbuf) + 4;
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size_t grow_size;
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size_t result;
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uint8 *tmp;
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/*
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* We need to over-allocate, now knowing what srvstr_push will
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* actually use. This is very generous by incorporating potential
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* padding, the terminating 0 and at most 4 chars per UTF-16 code
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* point.
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*/
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grow_size = (strlen(str) + 2) * 4;
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if (!(tmp = talloc_realloc(NULL, *outbuf, uint8,
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buf_size + grow_size))) {
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DEBUG(0, ("talloc failed\n"));
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return -1;
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}
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result = srvstr_push((char *)tmp, SVAL(tmp, smb_flg2),
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tmp + buf_size, str, grow_size, flags);
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if (result == (size_t)-1) {
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DEBUG(0, ("srvstr_push failed\n"));
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return -1;
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}
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set_message_bcc((char *)tmp, smb_buflen(tmp) + result);
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*outbuf = tmp;
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return result;
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}
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