diff options
Diffstat (limited to 'source3')
-rw-r--r-- | source3/modules/weird.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/source3/modules/weird.c b/source3/modules/weird.c new file mode 100644 index 0000000000..377a68d518 --- /dev/null +++ b/source3/modules/weird.c @@ -0,0 +1,131 @@ +/* + Unix SMB/CIFS implementation. + Samba module with developer tools + Copyright (C) Andrew Tridgell 2001 + Copyright (C) Jelmer Vernooij 2002 + + 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. +*/ + +#include "includes.h" + +static struct { + char from; + char *to; + int len; +} weird_table[] = { + {'q', "^q^", 3}, + {'Q', "^Q^", 3}, + {0, NULL} +}; + +static size_t weird_pull(void *cd, char **inbuf, size_t *inbytesleft, + char **outbuf, size_t *outbytesleft) +{ + while (*inbytesleft >= 1 && *outbytesleft >= 2) { + int i; + int done = 0; + for (i=0;weird_table[i].from;i++) { + if (strncmp((*inbuf), + weird_table[i].to, + weird_table[i].len) == 0) { + if (*inbytesleft < weird_table[i].len) { + DEBUG(0,("ERROR: truncated weird string\n")); + /* smb_panic("weird_pull"); */ + + } else { + (*outbuf)[0] = weird_table[i].from; + (*outbuf)[1] = 0; + (*inbytesleft) -= weird_table[i].len; + (*outbytesleft) -= 2; + (*inbuf) += weird_table[i].len; + (*outbuf) += 2; + done = 1; + break; + } + } + } + if (done) continue; + (*outbuf)[0] = (*inbuf)[0]; + (*outbuf)[1] = 0; + (*inbytesleft) -= 1; + (*outbytesleft) -= 2; + (*inbuf) += 1; + (*outbuf) += 2; + } + + if (*inbytesleft > 0) { + errno = E2BIG; + return -1; + } + + return 0; +} + +static size_t weird_push(void *cd, char **inbuf, size_t *inbytesleft, + char **outbuf, size_t *outbytesleft) +{ + int ir_count=0; + + while (*inbytesleft >= 2 && *outbytesleft >= 1) { + int i; + int done=0; + for (i=0;weird_table[i].from;i++) { + if ((*inbuf)[0] == weird_table[i].from && + (*inbuf)[1] == 0) { + if (*outbytesleft < weird_table[i].len) { + DEBUG(0,("No room for weird character\n")); + /* smb_panic("weird_push"); */ + } else { + memcpy(*outbuf, weird_table[i].to, + weird_table[i].len); + (*inbytesleft) -= 2; + (*outbytesleft) -= weird_table[i].len; + (*inbuf) += 2; + (*outbuf) += weird_table[i].len; + done = 1; + break; + } + } + } + if (done) continue; + + (*outbuf)[0] = (*inbuf)[0]; + if ((*inbuf)[1]) ir_count++; + (*inbytesleft) -= 2; + (*outbytesleft) -= 1; + (*inbuf) += 2; + (*outbuf) += 1; + } + + if (*inbytesleft == 1) { + errno = EINVAL; + return -1; + } + + if (*inbytesleft > 1) { + errno = E2BIG; + return -1; + } + + return ir_count; +} + +struct charset_functions weird_functions = {"WEIRD", weird_pull, weird_push}; + +int charset_weird_init(void) +{ + return smb_register_charset(&weird_functions); +} |