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/*
* Copyright (c) 2002-2012 Balabit
* Copyright (c) 1998-2012 Balázs Scheidler
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#ifndef LOGPROTO_H_INCLUDED
#define LOGPROTO_H_INCLUDED
#include "transport/logtransport.h"
#define RFC6587_MAX_FRAME_LEN_DIGITS 10
typedef enum
{
LPS_SUCCESS,
LPS_ERROR,
LPS_EOF,
LPS_PARTIAL,
LPS_AGAIN,
} LogProtoStatus;
/*
* log_proto_get_char_size_for_fixed_encoding:
*
* This function returns the number of bytes of a single character in the
* encoding specified by the @encoding parameter, provided it is listed in
* the limited set hard-wired in the fixed_encodings array above.
*
* syslog-ng sometimes needs to calculate the size of the original, raw data
* that relates to its already utf8 converted input buffer. For that the
* slow solution is to actually perform the utf8 -> raw conversion, however
* since we don't really need the actual conversion, just the size of the
* data in bytes we can be faster than that by multiplying the number of
* input characters with the size of the character in the known
* fixed-length-encodings in the list above.
*
* This function returns 0 if the encoding is not known, in which case the
* slow path is to be executed.
*/
static inline gint
log_proto_get_char_size_for_fixed_encoding(const gchar *encoding)
{
static struct
{
const gchar *prefix;
gint scale;
} fixed_encodings[] =
{
{ "ascii", 1 },
{ "us-ascii", 1 },
{ "iso-8859", 1 },
{ "iso8859", 1 },
{ "latin", 1 },
{ "ucs2", 2 },
{ "ucs-2", 2 },
{ "ucs4", 4 },
{ "ucs-4", 4 },
{ "koi", 1 },
{ "unicode", 2 },
{ "windows", 1 },
{ "wchar_t", sizeof(wchar_t) },
{ NULL, 0 }
};
gint scale = 0;
gint i;
for (i = 0; fixed_encodings[i].prefix; i++)
{
if (strncasecmp(encoding, fixed_encodings[i].prefix, strlen(fixed_encodings[i].prefix)) == 0)
{
scale = fixed_encodings[i].scale;
break;
}
}
return scale;
}
#endif
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