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/*
* Copyright (c) 2012 Balabit
* Copyright (c) 2012 Gergely Nagy <algernon@balabit.hu>
*
* 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.
*/
#include "logproto-indented-multiline-server.h"
#include "messages.h"
static inline gboolean
log_proto_indented_multiline_is_continuation(guchar first_char)
{
return (first_char == ' ' || first_char == '\t');
}
static gint
log_proto_indented_multiline_accumulate_line(LogProtoTextServer *s,
const guchar *msg,
gsize msg_len,
gssize consumed_len)
{
/* NOTES:
*
* msg
* points to the beginning of the line _repeatedly_, e.g. as
* long as we return the we couldn't extract a message.
*
* msg_len
* This is getting longer and longer as lines get accumulated
* in the message.
*
* consumed_len
* Is the length of the message starting with "msg" that was already
* consumed by this function. In practice this points to the EOL
* character of the last consumed line.
*
*/
/* let's check if the current line is a continuation line or not */
if (consumed_len >= 0 && msg_len > consumed_len + 1)
{
guchar first_character_of_the_current_line = msg[consumed_len + 1];
if (log_proto_indented_multiline_is_continuation(first_character_of_the_current_line))
{
return LPT_CONSUME_LINE | LPT_WAITING;
}
else
{
return LPT_REWIND_LINE | LPT_EXTRACTED;
}
}
return LPT_CONSUME_LINE | LPT_WAITING;
}
void
log_proto_indented_multiline_server_init(LogProtoIMultiLineServer *self,
LogTransport *transport,
const LogProtoServerOptions *options)
{
log_proto_text_server_init(&self->super, transport, options);
self->super.accumulate_line = log_proto_indented_multiline_accumulate_line;
}
LogProtoServer *
log_proto_indented_multiline_server_new(LogTransport *transport, const LogProtoServerOptions *options)
{
LogProtoIMultiLineServer *self = g_new0(LogProtoIMultiLineServer, 1);
log_proto_indented_multiline_server_init(self, transport, options);
return &self->super.super.super;
}
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