source3/libsmb/clistr.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    client string routines
   4    Copyright (C) Andrew Tridgell 2001
   5    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "libsmb/libsmb.h"
  23
  24 size_t clistr_push_fn(const char *function,
  25                         unsigned int line,
  26                         struct cli_state *cli,
  27                         void *dest,
  28                         const char *src,
  29                         int dest_len,
  30                         int flags)
  31 {
  32         size_t buf_used = PTR_DIFF(dest, cli->outbuf);
  33         if (dest_len == -1) {
  34                 if (((ptrdiff_t)dest < (ptrdiff_t)cli->outbuf) || (buf_used > cli->bufsize)) {
  35                         DEBUG(0, ("Pushing string of 'unlimited' length into non-SMB buffer!\n"));
  36                         return push_string_base(function, line,
  37                                                 cli->outbuf,
  38                                                 (uint16_t)(cli_ucs2(cli) ? FLAGS2_UNICODE_STRINGS : 0),
  39                                                 dest, src, -1, flags);
  40                 }
  41                 return push_string_base(function, line,
  42                                         cli->outbuf,
  43                                         (uint16_t)(cli_ucs2(cli) ? FLAGS2_UNICODE_STRINGS : 0),
  44                                         dest, src, cli->bufsize - buf_used,
  45                                         flags);
  46         }
  47
  48         /* 'normal' push into size-specified buffer */
  49         return push_string_base(function, line,
  50                                 cli->outbuf,
  51                                 (uint16_t)(cli_ucs2(cli) ? FLAGS2_UNICODE_STRINGS : 0),
  52                                 dest, src, dest_len, flags);
  53 }
  54
  55 size_t clistr_pull_fn(const char *function,
  56                         unsigned int line,
  57                         const char *inbuf,
  58                         char *dest,
  59                         const void *src,
  60                         int dest_len,
  61                         int src_len,
  62                         int flags)
  63 {
  64         return pull_string_fn(function, line, inbuf,
  65                               SVAL(inbuf, smb_flg2), dest, src, dest_len,
  66                               src_len, flags);
  67 }
  68
  69 size_t clistr_pull_talloc_fn(const char *function,
  70                                 unsigned int line,
  71                                 TALLOC_CTX *ctx,
  72                                 const char *base,
  73                                 uint16_t flags2,
  74                                 char **pp_dest,
  75                                 const void *src,
  76                                 int src_len,
  77                                 int flags)
  78 {
  79         return pull_string_talloc_fn(function,
  80                                         line,
  81                                         ctx,
  82                                         base,
  83                                         flags2,
  84                                         pp_dest,
  85                                         src,
  86                                         src_len,
  87                                         flags);
  88 }
  89
  90 size_t clistr_align_out(struct cli_state *cli, const void *p, int flags)
  91 {
  92         return align_string(cli->outbuf, (const char *)p, flags);
  93 }