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115 lines
3.0 KiB
C
115 lines
3.0 KiB
C
/* Copyright (C) 2007-2021 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* \ingroup httplayer
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*
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* @{
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*/
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#include "suricata-common.h"
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#include "threads.h"
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#include "decode.h"
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#include "detect.h"
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#include "detect-parse.h"
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#include "detect-engine.h"
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#include "detect-engine-mpm.h"
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#include "detect-engine-state.h"
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#include "detect-engine-prefilter.h"
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#include "detect-engine-content-inspection.h"
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#include "detect-content.h"
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#include "detect-pcre.h"
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#include "flow.h"
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#include "flow-var.h"
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#include "flow-util.h"
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#include "util-debug.h"
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#include "util-unittest.h"
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#include "util-unittest-helper.h"
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#include "util-spm.h"
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#include "util-print.h"
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#include "app-layer.h"
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#include "app-layer-parser.h"
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#include "app-layer-htp.h"
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#include "detect-http-header.h"
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#include "stream-tcp.h"
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#include "detect-http-header-common.h"
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void *HttpHeaderThreadDataInit(void *data)
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{
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HttpHeaderThreadData *td = SCCalloc(1, sizeof(*td));
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if (td != NULL) {
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if (data == NULL) {
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td->size_step = 512;
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} else {
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HttpHeaderThreadDataConfig *c = data;
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td->size_step = c->size_step;
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}
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/* initialize minimal buffers */
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(void)HttpHeaderExpandBuffer(td, &td->buffer, 1);
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}
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return td;
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}
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void HttpHeaderThreadDataFree(void *data)
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{
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HttpHeaderThreadData *hdrnames = data;
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SCFree(hdrnames->buffer.buffer);
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SCFree(hdrnames);
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}
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int HttpHeaderExpandBuffer(HttpHeaderThreadData *td,
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HttpHeaderBuffer *buf, uint32_t size)
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{
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size_t extra = td->size_step;
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while ((buf->size + extra) < (size + buf->len)) {
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extra += td->size_step;
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}
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SCLogDebug("adding %"PRIuMAX" to the buffer", (uintmax_t)extra);
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uint8_t *new_buffer = SCRealloc(buf->buffer, buf->size + extra);
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if (unlikely(new_buffer == NULL)) {
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buf->len = 0;
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return -1;
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}
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buf->buffer = new_buffer;
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buf->size += extra;
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return 0;
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}
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HttpHeaderBuffer *HttpHeaderGetBufferSpace(DetectEngineThreadCtx *det_ctx, Flow *f, uint8_t flags,
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const int keyword_id, HttpHeaderThreadData **ret_hdr_td)
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{
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*ret_hdr_td = NULL;
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HttpHeaderThreadData *hdr_td =
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DetectThreadCtxGetGlobalKeywordThreadCtx(det_ctx, keyword_id);
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if (hdr_td == NULL)
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return NULL;
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*ret_hdr_td = hdr_td;
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HttpHeaderBuffer *buf = &hdr_td->buffer;
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buf->len = 0;
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return buf;
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}
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