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/* Copyright (C) 2007-2021 Open Information Security Foundation
*
* You can copy, redistribute or modify this Program under the terms of
* the GNU General Public License version 2 as published by the Free
* Software Foundation.
*
* 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
* version 2 along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/**
* \ingroup httplayer
*
* @{
*/
#include "suricata-common.h"
#include "threads.h"
#include "decode.h"
#include "detect.h"
#include "detect-parse.h"
#include "detect-engine.h"
#include "detect-engine-mpm.h"
#include "detect-engine-state.h"
#include "detect-engine-prefilter.h"
#include "detect-engine-content-inspection.h"
#include "detect-content.h"
#include "detect-pcre.h"
#include "flow.h"
#include "flow-var.h"
#include "flow-util.h"
#include "util-debug.h"
#include "util-unittest.h"
#include "util-unittest-helper.h"
#include "util-spm.h"
#include "util-print.h"
#include "app-layer.h"
#include "app-layer-parser.h"
#include "app-layer-htp.h"
#include "detect-http-header.h"
#include "stream-tcp.h"
#include "detect-http-header-common.h"
void *HttpHeaderThreadDataInit(void *data)
{
HttpHeaderThreadData *td = SCCalloc(1, sizeof(*td));
if (td != NULL) {
if (data == NULL) {
td->size_step = 512;
} else {
HttpHeaderThreadDataConfig *c = data;
td->size_step = c->size_step;
}
/* initialize minimal buffers */
(void)HttpHeaderExpandBuffer(td, &td->buffer, 1);
}
return td;
}
void HttpHeaderThreadDataFree(void *data)
{
HttpHeaderThreadData *hdrnames = data;
SCFree(hdrnames->buffer.buffer);
SCFree(hdrnames);
}
int HttpHeaderExpandBuffer(HttpHeaderThreadData *td,
HttpHeaderBuffer *buf, uint32_t size)
{
size_t extra = td->size_step;
while ((buf->size + extra) < (size + buf->len)) {
extra += td->size_step;
}
SCLogDebug("adding %"PRIuMAX" to the buffer", (uintmax_t)extra);
uint8_t *new_buffer = SCRealloc(buf->buffer, buf->size + extra);
if (unlikely(new_buffer == NULL)) {
buf->len = 0;
return -1;
}
buf->buffer = new_buffer;
buf->size += extra;
return 0;
}
HttpHeaderBuffer *HttpHeaderGetBufferSpace(DetectEngineThreadCtx *det_ctx, Flow *f, uint8_t flags,
const int keyword_id, HttpHeaderThreadData **ret_hdr_td)
{
*ret_hdr_td = NULL;
HttpHeaderThreadData *hdr_td =
DetectThreadCtxGetGlobalKeywordThreadCtx(det_ctx, keyword_id);
if (hdr_td == NULL)
return NULL;
*ret_hdr_td = hdr_td;
HttpHeaderBuffer *buf = &hdr_td->buffer;
buf->len = 0;
return buf;
}
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