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/*
* Copyright (c) 2021 Balazs Scheidler <bazsi77@gmail.com>
*
* 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 "rewrite-set-matches.h"
#include "scanner/list-scanner/list-scanner.h"
#include "scratch-buffers.h"
/* LogRewriteSetMatches
*
* This class implements the "set" expression in a rewrite rule.
*/
typedef struct _LogRewriteSetMatches LogRewriteSetMatches;
struct _LogRewriteSetMatches
{
LogRewrite super;
LogTemplate *value_template;
LogTemplateOptions template_options;
};
LogTemplateOptions *
log_rewrite_set_matches_get_template_options(LogRewrite *s)
{
LogRewriteSetMatches *self = (LogRewriteSetMatches *) s;
return &self->template_options;
}
static void
log_rewrite_set_matches_process(LogRewrite *s, LogMessage **pmsg, const LogPathOptions *path_options)
{
LogRewriteSetMatches *self = (LogRewriteSetMatches *) s;
GString *result;
LogMessageValueType type;
result = scratch_buffers_alloc();
LogTemplateEvalOptions options = {&self->template_options, LTZ_SEND, 0, NULL, LM_VT_STRING};
log_template_format_value_and_type(self->value_template, *pmsg, &options, result, &type);
log_msg_make_writable(pmsg, path_options);
ListScanner scanner;
list_scanner_init(&scanner);
list_scanner_input_string(&scanner, result->str, result->len);
log_msg_clear_matches(*pmsg);
for (gint i = 1; list_scanner_scan_next(&scanner) && i < LOGMSG_MAX_MATCHES; i++)
{
log_msg_set_match(*pmsg, i,
list_scanner_get_current_value(&scanner), list_scanner_get_current_value_len(&scanner));
}
list_scanner_deinit(&scanner);
}
static LogPipe *
log_rewrite_set_matches_clone(LogPipe *s)
{
LogRewriteSetMatches *self = (LogRewriteSetMatches *) s;
LogRewriteSetMatches *cloned;
cloned = (LogRewriteSetMatches *) log_rewrite_set_matches_new(self->value_template, s->cfg);
log_rewrite_clone_method(&cloned->super, &self->super);
return &cloned->super.super;
}
static void
log_rewrite_set_matches_free(LogPipe *s)
{
LogRewriteSetMatches *self = (LogRewriteSetMatches *) s;
log_template_options_destroy(&self->template_options);
log_template_unref(self->value_template);
log_rewrite_free_method(s);
}
gboolean
log_rewrite_set_matches_init_method(LogPipe *s)
{
LogRewriteSetMatches *self = (LogRewriteSetMatches *) s;
GlobalConfig *cfg = log_pipe_get_config(s);
if (log_rewrite_init_method(s))
{
log_template_options_init(&self->template_options, cfg);
return TRUE;
}
else
return FALSE;
}
LogRewrite *
log_rewrite_set_matches_new(LogTemplate *new_value, GlobalConfig *cfg)
{
LogRewriteSetMatches *self = g_new0(LogRewriteSetMatches, 1);
log_rewrite_init_instance(&self->super, cfg);
self->super.super.free_fn = log_rewrite_set_matches_free;
self->super.super.clone = log_rewrite_set_matches_clone;
self->super.super.init = log_rewrite_set_matches_init_method;
self->super.process = log_rewrite_set_matches_process;
self->value_template = log_template_ref(new_value);
log_template_options_defaults(&self->template_options);
return &self->super;
}
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