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/*
* Copyright (c) 2015 Balabit
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, 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., 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 "kv-parser.h"
#include "kv-scanner.h"
typedef struct _KVParser
{
LogParser super;
gchar *prefix;
gsize prefix_len;
GString *formatted_key;
KVScanner *kv_scanner;
} KVParser;
void
kv_parser_set_prefix(LogParser *p, const gchar *prefix)
{
KVParser *self = (KVParser *)p;
g_free(self->prefix);
if (prefix)
{
self->prefix = g_strdup(prefix);
self->prefix_len = strlen(prefix);
}
else
{
self->prefix = NULL;
self->prefix_len = 0;
}
}
void
kv_parser_set_value_separator(LogParser *s, gchar value_separator)
{
KVParser *self = (KVParser *) s;
kv_scanner_set_value_separator(self->kv_scanner, value_separator);
}
static const gchar *
_get_formatted_key(KVParser *self, const gchar *key)
{
if (!self->prefix)
return key;
else if (self->formatted_key->len > 0)
g_string_truncate(self->formatted_key, self->prefix_len);
else
g_string_assign(self->formatted_key, self->prefix);
g_string_append(self->formatted_key, key);
return self->formatted_key->str;
}
static gboolean
kv_parser_process(LogParser *s, LogMessage **pmsg, const LogPathOptions *path_options, const gchar *input, gsize input_len)
{
KVParser *self = (KVParser *) s;
log_msg_make_writable(pmsg, path_options);
/* FIXME: input length */
kv_scanner_input(self->kv_scanner, input);
while (kv_scanner_scan_next(self->kv_scanner))
{
/* FIXME: value length */
log_msg_set_value_by_name(*pmsg,
_get_formatted_key(self, kv_scanner_get_current_key(self->kv_scanner)),
kv_scanner_get_current_value(self->kv_scanner), -1);
}
return TRUE;
}
static LogPipe *
kv_parser_clone(LogPipe *s)
{
KVParser *self = (KVParser *) s;
LogParser *cloned;
cloned = kv_parser_new(s->cfg, kv_scanner_clone(self->kv_scanner));
kv_parser_set_prefix(cloned, self->prefix);
log_parser_set_template(cloned, log_template_ref(self->super.template));
return &cloned->super;
}
static void
kv_parser_free(LogPipe *s)
{
KVParser *self = (KVParser *)s;
kv_scanner_free(self->kv_scanner);
g_string_free(self->formatted_key, TRUE);
g_free(self->prefix);
log_parser_free_method(s);
}
static gboolean
kv_parser_process_threaded(LogParser *s, LogMessage **pmsg, const LogPathOptions *path_options, const gchar *input, gsize input_len)
{
LogParser *self = (LogParser *)log_pipe_clone(&s->super);
gboolean ok = kv_parser_process(self, pmsg, path_options, input, input_len);
log_pipe_unref(&self->super);
return ok;
}
LogParser *
kv_parser_new(GlobalConfig *cfg, KVScanner *kv_scanner)
{
KVParser *self = g_new0(KVParser, 1);
log_parser_init_instance(&self->super, cfg);
self->super.super.free_fn = kv_parser_free;
self->super.super.clone = kv_parser_clone;
self->super.process = kv_parser_process_threaded;
self->kv_scanner = kv_scanner;
self->formatted_key = g_string_sized_new(32);
return &self->super;
}
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