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app-layer-htp-file.c
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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.
*/
/**
* \file
*
* \author Victor Julien <victor@inliniac.net>
*
* This file provides HTTP protocol file handling support for the engine
* using the HTP library.
*/
#include "suricata-common.h"
#include "app-layer-htp-file.h"
#include "app-layer-htp-range.h"
#include "app-layer-events.h"
#include "util-validate.h"
extern StreamingBufferConfig htp_sbcfg;
/**
* \brief Open the file with "filename" and pass the first chunk
* of data if any.
*
* \param s http state
* \param filename name of the file
* \param filename_len length of the name
* \param data data chunk (if any)
* \param data_len length of the data portion
* \param direction flow direction
*
* \retval 0 ok
* \retval -1 error
* \retval -2 not handling files on this flow
*/
int HTPFileOpen(HtpState *s, HtpTxUserData *tx, const uint8_t *filename, uint16_t filename_len,
const uint8_t *data, uint32_t data_len, uint8_t direction)
{
int retval = 0;
uint16_t flags = 0;
FileContainer *files = NULL;
SCLogDebug("data %p data_len %"PRIu32, data, data_len);
if (direction & STREAM_TOCLIENT) {
files = &tx->files_tc;
flags = FileFlowFlagsToFlags(tx->tx_data.file_flags, STREAM_TOCLIENT);
// we shall not open a new file if there is a current one
DEBUG_VALIDATE_BUG_ON(tx->file_range != NULL);
} else {
files = &tx->files_ts;
flags = FileFlowFlagsToFlags(tx->tx_data.file_flags, STREAM_TOSERVER);
}
if (FileOpenFileWithId(files, &htp_sbcfg, s->file_track_id++, filename, filename_len, data,
data_len, flags) != 0) {
retval = -1;
} else {
const HTPCfgDir *cfg;
if (direction & STREAM_TOCLIENT) {
cfg = &s->cfg->response;
} else {
cfg = &s->cfg->request;
}
FileSetInspectSizes(files->tail, cfg->inspect_window, cfg->inspect_min_size);
}
tx->tx_data.files_opened++;
SCReturnInt(retval);
}
/**
* Performs parsing of the content-range value
*
* @param[in] rawvalue
* @param[out] range
*
* @return HTP_OK on success, HTP_ERROR on failure.
*/
int HTPParseContentRange(bstr *rawvalue, HTTPContentRange *range)
{
uint32_t len = (uint32_t)bstr_len(rawvalue);
return rs_http_parse_content_range(range, bstr_ptr(rawvalue), len);
}
/**
* Performs parsing + checking of the content-range value
*
* @param[in] rawvalue
* @param[out] range
*
* @return HTP_OK on success, HTP_ERROR, -2, -3 on failure.
*/
static int HTPParseAndCheckContentRange(
bstr *rawvalue, HTTPContentRange *range, HtpState *s, HtpTxUserData *htud)
{
int r = HTPParseContentRange(rawvalue, range);
if (r != 0) {
AppLayerDecoderEventsSetEventRaw(&htud->tx_data.events, HTTP_DECODER_EVENT_RANGE_INVALID);
s->events++;
SCLogDebug("parsing range failed, going back to normal file");
return r;
}
/* crparsed.end <= 0 means a range with only size
* this is the answer to an unsatisfied range with the whole file
* crparsed.size <= 0 means an unknown size, so we do not know
* when to close it...
*/
if (range->end <= 0 || range->size <= 0) {
SCLogDebug("range without all information");
return -2;
} else if (range->end == range->size - 1 && range->start == 0) {
SCLogDebug("range without all information");
return -3;
} else if (range->start > range->end || range->end > range->size - 1) {
AppLayerDecoderEventsSetEventRaw(&htud->tx_data.events, HTTP_DECODER_EVENT_RANGE_INVALID);
s->events++;
SCLogDebug("invalid range");
return -4;
}
return r;
}
/**
* \brief Sets range for a file
*
* \param s http state
* \param rawvalue raw header value
*
* \retval 0 ok
* \retval -1 error
*/
int HTPFileOpenWithRange(HtpState *s, HtpTxUserData *txud, const uint8_t *filename,
uint16_t filename_len, const uint8_t *data, uint32_t data_len, htp_tx_t *tx, bstr *rawvalue,
HtpTxUserData *htud)
{
SCEnter();
uint16_t flags;
DEBUG_VALIDATE_BUG_ON(s == NULL);
// This function is only called STREAM_TOCLIENT from HtpResponseBodyHandle
HTTPContentRange crparsed;
if (HTPParseAndCheckContentRange(rawvalue, &crparsed, s, htud) != 0) {
// range is invalid, fall back to classic open
return HTPFileOpen(s, txud, filename, filename_len, data, data_len, STREAM_TOCLIENT);
}
flags = FileFlowToFlags(s->f, STREAM_TOCLIENT);
FileContainer *files = &txud->files_tc;
// we open a file for this specific range
if (FileOpenFileWithId(files, &htp_sbcfg, s->file_track_id++, filename, filename_len, data,
data_len, flags) != 0) {
SCReturnInt(-1);
} else {
const HTPCfgDir *cfg = &s->cfg->response;
FileSetInspectSizes(files->tail, cfg->inspect_window, cfg->inspect_min_size);
}
txud->tx_data.files_opened++;
if (FileSetRange(files, crparsed.start, crparsed.end) < 0) {
SCLogDebug("set range failed");
}
// Then, we will try to handle reassembly of different ranges of the same file
uint8_t *keyurl;
uint32_t keylen;
if (tx->request_hostname != NULL) {
uint32_t hlen = (uint32_t)bstr_len(tx->request_hostname);
if (bstr_len(tx->request_hostname) > UINT16_MAX) {
hlen = UINT16_MAX;
}
keylen = hlen + filename_len;
keyurl = SCMalloc(keylen);
if (keyurl == NULL) {
SCReturnInt(-1);
}
memcpy(keyurl, bstr_ptr(tx->request_hostname), hlen);
memcpy(keyurl + hlen, filename, filename_len);
} else {
// do not reassemble file without host info
SCReturnInt(0);
}
DEBUG_VALIDATE_BUG_ON(htud->file_range);
htud->file_range = HttpRangeContainerOpenFile(keyurl, keylen, s->f, &crparsed, &htp_sbcfg,
filename, filename_len, flags, data, data_len);
SCFree(keyurl);
if (htud->file_range == NULL) {
SCReturnInt(-1);
}
SCReturnInt(0);
}
/**
* \brief Store a chunk of data in the flow
*
* \param s HtpState
* \param tx HtpTxUserData
* \param data data chunk (if any)
* \param data_len length of the data portion
* \param direction flow direction
*
* \retval 0 ok
* \retval -1 error
* \retval -2 file doesn't need storing
*/
int HTPFileStoreChunk(HtpTxUserData *tx, const uint8_t *data, uint32_t data_len, uint8_t direction)
{
SCEnter();
int retval = 0;
int result = 0;
FileContainer *files = NULL;
if (direction & STREAM_TOCLIENT) {
files = &tx->files_tc;
} else {
files = &tx->files_ts;
}
SCLogDebug("files %p data %p data_len %" PRIu32, files, data, data_len);
if (files == NULL) {
SCLogDebug("no files in state");
retval = -1;
goto end;
}
if (tx->file_range != NULL) {
if (HttpRangeAppendData(&htp_sbcfg, tx->file_range, data, data_len) < 0) {
SCLogDebug("Failed to append data");
}
}
result = FileAppendData(files, &htp_sbcfg, data, data_len);
if (result == -1) {
SCLogDebug("appending data failed");
retval = -1;
} else if (result == -2) {
retval = -2;
}
SCLogDebug("result %u", result);
end:
SCReturnInt(retval);
}
/** \brief close range, add reassembled file if possible
* \retval true if reassembled file was added
* \retval false if no reassembled file was added
*/
bool HTPFileCloseHandleRange(const StreamingBufferConfig *sbcfg, FileContainer *files,
const uint16_t flags, HttpRangeContainerBlock *c, const uint8_t *data, uint32_t data_len)
{
bool added = false;
if (HttpRangeAppendData(sbcfg, c, data, data_len) < 0) {
SCLogDebug("Failed to append data");
}
if (c->container) {
// we only call HttpRangeClose if we may some new data
// ie we do not call it if we skipped all this range request
THashDataLock(c->container->hdata);
if (c->container->error) {
SCLogDebug("range in ERROR state");
}
File *ranged = HttpRangeClose(sbcfg, c, flags);
if (ranged && files) {
/* HtpState owns the constructed file now */
FileContainerAdd(files, ranged);
added = true;
}
DEBUG_VALIDATE_BUG_ON(ranged && !files);
THashDataUnlock(c->container->hdata);
}
return added;
}
/**
* \brief Close the file in the flow
*
* \param tx HtpTxUserData
* \param data data chunk if any
* \param data_len length of the data portion
* \param flags flags to indicate events
* \param direction flow direction
*
* Currently on the FLOW_FILE_TRUNCATED flag is implemented, indicating
* that the file isn't complete but we're stopping storing it.
*
* \retval 0 ok
* \retval -1 error
* \retval -2 not storing files on this flow/tx
*/
int HTPFileClose(
HtpTxUserData *tx, const uint8_t *data, uint32_t data_len, uint8_t flags, uint8_t direction)
{
SCEnter();
SCLogDebug("flags %04x FILE_TRUNCATED %s", flags, (flags & FILE_TRUNCATED) ? "true" : "false");
int retval = 0;
int result = 0;
FileContainer *files = NULL;
if (direction & STREAM_TOCLIENT) {
files = &tx->files_tc;
} else {
files = &tx->files_ts;
}
SCLogDebug("files %p data %p data_len %" PRIu32, files, data, data_len);
if (files == NULL) {
retval = -1;
goto end;
}
result = FileCloseFile(files, &htp_sbcfg, data, data_len, flags);
if (result == -1) {
retval = -1;
} else if (result == -2) {
retval = -2;
}
SCLogDebug("result %u", result);
if (tx->file_range != NULL) {
bool added =
HTPFileCloseHandleRange(&htp_sbcfg, files, flags, tx->file_range, data, data_len);
if (added) {
tx->tx_data.files_opened++;
}
HttpRangeFreeBlock(tx->file_range);
tx->file_range = NULL;
}
end:
SCReturnInt(retval);
}
#ifdef UNITTESTS
#include "stream-tcp.h"
#include "app-layer-parser.h"
#include "util-unittest-helper.h"
static int HTPFileParserTest01(void)
{
uint8_t httpbuf1[] = "POST /upload.cgi HTTP/1.1\r\n"
"Host: www.server.lan\r\n"
"Content-Type: multipart/form-data; boundary=---------------------------277531038314945\r\n"
"Content-Length: 215\r\n"
"\r\n"
"-----------------------------277531038314945\r\n"
"Content-Disposition: form-data; name=\"uploadfile_0\"; filename=\"somepicture1.jpg\"\r\n"
"Content-Type: image/jpeg\r\n"
"\r\n";
uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
uint8_t httpbuf2[] = "filecontent\r\n"
"-----------------------------277531038314945--";
uint32_t httplen2 = sizeof(httpbuf2) - 1; /* minus the \0 */
TcpSession ssn;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
HtpState *http_state = NULL;
memset(&ssn, 0, sizeof(ssn));
Flow *f = UTHBuildFlow(AF_INET, "1.2.3.4", "1.2.3.5", 1024, 80);
FAIL_IF_NULL(f);
f->protoctx = &ssn;
f->proto = IPPROTO_TCP;
f->alproto = ALPROTO_HTTP1;
StreamTcpInitConfig(true);
SCLogDebug("\n>>>> processing chunk 1 <<<<\n");
int r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_START, httpbuf1, httplen1);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 2 size %u <<<<\n", httplen2);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf2, httplen2);
FAIL_IF_NOT(r == 0);
http_state = f->alstate;
FAIL_IF_NULL(http_state);
htp_tx_t *tx = AppLayerParserGetTx(IPPROTO_TCP, ALPROTO_HTTP1, http_state, 0);
FAIL_IF_NULL(tx);
FAIL_IF_NULL(tx->request_method);
FAIL_IF(memcmp(bstr_util_strdup_to_c(tx->request_method), "POST", 4) != 0);
AppLayerParserThreadCtxFree(alp_tctx);
StreamTcpFreeConfig(true);
UTHFreeFlow(f);
PASS;
}
static int HTPFileParserTest02(void)
{
uint8_t httpbuf1[] = "POST /upload.cgi HTTP/1.1\r\n"
"Host: www.server.lan\r\n"
"Content-Type: multipart/form-data; boundary=---------------------------277531038314945\r\n"
"Content-Length: 337\r\n"
"\r\n";
uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
uint8_t httpbuf2[] = "-----------------------------277531038314945\r\n"
"Content-Disposition: form-data; name=\"email\"\r\n"
"\r\n"
"someaddress@somedomain.lan\r\n";
uint32_t httplen2 = sizeof(httpbuf2) - 1; /* minus the \0 */
uint8_t httpbuf3[] = "-----------------------------277531038314945\r\n"
"Content-Disposition: form-data; name=\"uploadfile_0\"; filename=\"somepicture1.jpg\"\r\n"
"Content-Type: image/jpeg\r\n"
"\r\n";
uint32_t httplen3 = sizeof(httpbuf3) - 1; /* minus the \0 */
uint8_t httpbuf4[] = "filecontent\r\n"
"-----------------------------277531038314945--";
uint32_t httplen4 = sizeof(httpbuf4) - 1; /* minus the \0 */
TcpSession ssn;
HtpState *http_state = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&ssn, 0, sizeof(ssn));
Flow *f = UTHBuildFlow(AF_INET, "1.2.3.4", "1.2.3.5", 1024, 80);
FAIL_IF_NULL(f);
f->protoctx = &ssn;
f->proto = IPPROTO_TCP;
f->alproto = ALPROTO_HTTP1;
StreamTcpInitConfig(true);
SCLogDebug("\n>>>> processing chunk 1 <<<<\n");
int r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_START, httpbuf1, httplen1);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 2 size %u <<<<\n", httplen2);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf2, httplen2);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 3 size %u <<<<\n", httplen3);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf3, httplen3);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 4 size %u <<<<\n", httplen4);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf4, httplen4);
FAIL_IF_NOT(r == 0);
http_state = f->alstate;
FAIL_IF_NULL(http_state);
htp_tx_t *tx = AppLayerParserGetTx(IPPROTO_TCP, ALPROTO_HTTP1, http_state, 0);
FAIL_IF_NULL(tx);
FAIL_IF_NULL(tx->request_method);
FAIL_IF(memcmp(bstr_util_strdup_to_c(tx->request_method), "POST", 4) != 0);
HtpTxUserData *tx_ud = htp_tx_get_user_data(tx);
FAIL_IF_NULL(tx_ud);
FAIL_IF_NULL(tx_ud->files_ts.tail);
FAIL_IF(tx_ud->files_ts.tail->state != FILE_STATE_CLOSED);
AppLayerParserThreadCtxFree(alp_tctx);
StreamTcpFreeConfig(true);
UTHFreeFlow(f);
PASS;
}
static int HTPFileParserTest03(void)
{
uint8_t httpbuf1[] = "POST /upload.cgi HTTP/1.1\r\n"
"Host: www.server.lan\r\n"
"Content-Type: multipart/form-data; boundary=---------------------------277531038314945\r\n"
"Content-Length: 337\r\n"
"\r\n";
uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
uint8_t httpbuf2[] = "-----------------------------277531038314945\r\n"
"Content-Disposition: form-data; name=\"email\"\r\n"
"\r\n"
"someaddress@somedomain.lan\r\n";
uint32_t httplen2 = sizeof(httpbuf2) - 1; /* minus the \0 */
uint8_t httpbuf3[] = "-----------------------------277531038314945\r\n"
"Content-Disposition: form-data; name=\"uploadfile_0\"; filename=\"somepicture1.jpg\"\r\n"
"Content-Type: image/jpeg\r\n"
"\r\n";
uint32_t httplen3 = sizeof(httpbuf3) - 1; /* minus the \0 */
uint8_t httpbuf4[] = "file";
uint32_t httplen4 = sizeof(httpbuf4) - 1; /* minus the \0 */
uint8_t httpbuf5[] = "content\r\n";
uint32_t httplen5 = sizeof(httpbuf5) - 1; /* minus the \0 */
uint8_t httpbuf6[] = "-----------------------------277531038314945--";
uint32_t httplen6 = sizeof(httpbuf6) - 1; /* minus the \0 */
TcpSession ssn;
HtpState *http_state = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&ssn, 0, sizeof(ssn));
Flow *f = UTHBuildFlow(AF_INET, "1.2.3.4", "1.2.3.5", 1024, 80);
FAIL_IF_NULL(f);
f->protoctx = &ssn;
f->proto = IPPROTO_TCP;
f->alproto = ALPROTO_HTTP1;
StreamTcpInitConfig(true);
SCLogDebug("\n>>>> processing chunk 1 <<<<\n");
int r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_START, httpbuf1, httplen1);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 2 size %u <<<<\n", httplen2);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf2, httplen2);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 3 size %u <<<<\n", httplen3);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf3, httplen3);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 4 size %u <<<<\n", httplen4);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf4, httplen4);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 5 size %u <<<<\n", httplen5);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf5, httplen5);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 6 size %u <<<<\n", httplen6);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf6, httplen6);
FAIL_IF_NOT(r == 0);
http_state = f->alstate;
FAIL_IF_NULL(http_state);
htp_tx_t *tx = AppLayerParserGetTx(IPPROTO_TCP, ALPROTO_HTTP1, http_state, 0);
FAIL_IF_NULL(tx);
FAIL_IF_NULL(tx->request_method);
FAIL_IF(memcmp(bstr_util_strdup_to_c(tx->request_method), "POST", 4) != 0);
HtpTxUserData *tx_ud = htp_tx_get_user_data(tx);
FAIL_IF_NULL(tx_ud);
FAIL_IF_NULL(tx_ud->files_ts.head);
FAIL_IF_NULL(tx_ud->files_ts.tail);
FAIL_IF(tx_ud->files_ts.tail->state != FILE_STATE_CLOSED);
FAIL_IF(FileDataSize(tx_ud->files_ts.head) != 11);
AppLayerParserThreadCtxFree(alp_tctx);
StreamTcpFreeConfig(true);
UTHFreeFlow(f);
PASS;
}
static int HTPFileParserTest04(void)
{
uint8_t httpbuf1[] = "POST /upload.cgi HTTP/1.1\r\n"
"Host: www.server.lan\r\n"
"Content-Type: multipart/form-data; boundary=---------------------------277531038314945\r\n"
"Content-Length: 373\r\n"
"\r\n";
uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
uint8_t httpbuf2[] = "-----------------------------277531038314945\r\n"
"Content-Disposition: form-data; name=\"email\"\r\n"
"\r\n"
"someaddress@somedomain.lan\r\n";
uint32_t httplen2 = sizeof(httpbuf2) - 1; /* minus the \0 */
uint8_t httpbuf3[] = "-----------------------------277531038314945\r\n"
"Content-Disposition: form-data; name=\"uploadfile_0\"; filename=\"somepicture1.jpg\"\r\n"
"Content-Type: image/jpeg\r\n"
"\r\n";
uint32_t httplen3 = sizeof(httpbuf3) - 1; /* minus the \0 */
uint8_t httpbuf4[] = "file0123456789abcdefghijklmnopqrstuvwxyz";
uint32_t httplen4 = sizeof(httpbuf4) - 1; /* minus the \0 */
uint8_t httpbuf5[] = "content\r\n";
uint32_t httplen5 = sizeof(httpbuf5) - 1; /* minus the \0 */
uint8_t httpbuf6[] = "-----------------------------277531038314945--";
uint32_t httplen6 = sizeof(httpbuf6) - 1; /* minus the \0 */
TcpSession ssn;
HtpState *http_state = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&ssn, 0, sizeof(ssn));
Flow *f = UTHBuildFlow(AF_INET, "1.2.3.4", "1.2.3.5", 1024, 80);
FAIL_IF_NULL(f);
f->protoctx = &ssn;
f->proto = IPPROTO_TCP;
f->alproto = ALPROTO_HTTP1;
StreamTcpInitConfig(true);
SCLogDebug("\n>>>> processing chunk 1 <<<<\n");
int r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_START, httpbuf1, httplen1);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 2 size %u <<<<\n", httplen2);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf2, httplen2);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 3 size %u <<<<\n", httplen3);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf3, httplen3);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 4 size %u <<<<\n", httplen4);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf4, httplen4);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 5 size %u <<<<\n", httplen5);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf5, httplen5);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 6 size %u <<<<\n", httplen6);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf6, httplen6);
FAIL_IF_NOT(r == 0);
http_state = f->alstate;
FAIL_IF_NULL(http_state);
htp_tx_t *tx = AppLayerParserGetTx(IPPROTO_TCP, ALPROTO_HTTP1, http_state, 0);
FAIL_IF_NULL(tx);
FAIL_IF_NULL(tx->request_method);
FAIL_IF(memcmp(bstr_util_strdup_to_c(tx->request_method), "POST", 4) != 0);
HtpTxUserData *tx_ud = htp_tx_get_user_data(tx);
FAIL_IF_NULL(tx_ud);
FAIL_IF_NULL(tx_ud->files_ts.head);
FAIL_IF_NULL(tx_ud->files_ts.tail);
FAIL_IF(tx_ud->files_ts.tail->state != FILE_STATE_CLOSED);
AppLayerParserThreadCtxFree(alp_tctx);
StreamTcpFreeConfig(true);
UTHFreeFlow(f);
PASS;
}
static int HTPFileParserTest05(void)
{
uint8_t httpbuf1[] = "POST /upload.cgi HTTP/1.1\r\n"
"Host: www.server.lan\r\n"
"Content-Type: multipart/form-data; boundary=---------------------------277531038314945\r\n"
"Content-Length: 544\r\n"
"\r\n"
"-----------------------------277531038314945\r\n"
"Content-Disposition: form-data; name=\"uploadfile_0\"; filename=\"somepicture1.jpg\"\r\n"
"Content-Type: image/jpeg\r\n"
"\r\n"
"filecontent\r\n"
"-----------------------------277531038314945\r\n";
uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
uint8_t httpbuf2[] = "Content-Disposition: form-data; name=\"uploadfile_1\"; filename=\"somepicture2.jpg\"\r\n"
"Content-Type: image/jpeg\r\n"
"\r\n"
"FILECONTENT\r\n"
"-----------------------------277531038314945--";
uint32_t httplen2 = sizeof(httpbuf2) - 1; /* minus the \0 */
TcpSession ssn;
HtpState *http_state = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&ssn, 0, sizeof(ssn));
Flow *f = UTHBuildFlow(AF_INET, "1.2.3.4", "1.2.3.5", 1024, 80);
FAIL_IF_NULL(f);
f->protoctx = &ssn;
f->proto = IPPROTO_TCP;
f->alproto = ALPROTO_HTTP1;
StreamTcpInitConfig(true);
SCLogDebug("\n>>>> processing chunk 1 size %u <<<<\n", httplen1);
int r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_START, httpbuf1, httplen1);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 2 size %u <<<<\n", httplen2);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf2, httplen2);
FAIL_IF_NOT(r == 0);
http_state = f->alstate;
FAIL_IF_NULL(http_state);
htp_tx_t *tx = AppLayerParserGetTx(IPPROTO_TCP, ALPROTO_HTTP1, http_state, 0);
FAIL_IF_NULL(tx);
FAIL_IF_NULL(tx->request_method);
FAIL_IF(memcmp(bstr_util_strdup_to_c(tx->request_method), "POST", 4) != 0);
HtpTxUserData *tx_ud = htp_tx_get_user_data(tx);
FAIL_IF_NULL(tx_ud);
FAIL_IF_NULL(tx_ud->files_ts.head);
FAIL_IF_NULL(tx_ud->files_ts.tail);
FAIL_IF(tx_ud->files_ts.tail->state != FILE_STATE_CLOSED);
FAIL_IF(tx_ud->files_ts.head == tx_ud->files_ts.tail);
FAIL_IF(tx_ud->files_ts.head->next != tx_ud->files_ts.tail);
FAIL_IF(StreamingBufferCompareRawData(tx_ud->files_ts.head->sb, (uint8_t *)"filecontent", 11) !=
1);
FAIL_IF(StreamingBufferCompareRawData(tx_ud->files_ts.tail->sb, (uint8_t *)"FILECONTENT", 11) !=
1);
AppLayerParserThreadCtxFree(alp_tctx);
StreamTcpFreeConfig(true);
UTHFreeFlow(f);
PASS;
}
/** \test first multipart part contains file but doesn't end in first chunk */
static int HTPFileParserTest06(void)
{
uint8_t httpbuf1[] = "POST /upload.cgi HTTP/1.1\r\n"
"Host: www.server.lan\r\n"
"Content-Type: multipart/form-data; boundary=---------------------------277531038314945\r\n"
"Content-Length: 544\r\n"
"\r\n"
"-----------------------------277531038314945\r\n"
"Content-Disposition: form-data; name=\"uploadfile_0\"; filename=\"somepicture1.jpg\"\r\n"
"Content-Type: image/jpeg\r\n"
"\r\n"
"filecontent\r\n"
"-----------------------------27753103831494";
uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
uint8_t httpbuf2[] = "5\r\nContent-Disposition: form-data; name=\"uploadfile_1\"; filename=\"somepicture2.jpg\"\r\n"
"Content-Type: image/jpeg\r\n"
"\r\n"
"FILECONTENT\r\n"
"-----------------------------277531038314945--";
uint32_t httplen2 = sizeof(httpbuf2) - 1; /* minus the \0 */
TcpSession ssn;
HtpState *http_state = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&ssn, 0, sizeof(ssn));
Flow *f = UTHBuildFlow(AF_INET, "1.2.3.4", "1.2.3.5", 1024, 80);
FAIL_IF_NULL(f);
f->protoctx = &ssn;
f->proto = IPPROTO_TCP;
f->alproto = ALPROTO_HTTP1;
StreamTcpInitConfig(true);
SCLogDebug("\n>>>> processing chunk 1 size %u <<<<\n", httplen1);
int r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_START, httpbuf1, httplen1);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 2 size %u <<<<\n", httplen2);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf2, httplen2);
FAIL_IF_NOT(r == 0);
http_state = f->alstate;
FAIL_IF_NULL(http_state);
htp_tx_t *tx = AppLayerParserGetTx(IPPROTO_TCP, ALPROTO_HTTP1, http_state, 0);
FAIL_IF_NULL(tx);
FAIL_IF_NULL(tx->request_method);
FAIL_IF(memcmp(bstr_util_strdup_to_c(tx->request_method), "POST", 4) != 0);
HtpTxUserData *tx_ud = htp_tx_get_user_data(tx);
FAIL_IF_NULL(tx_ud);
FAIL_IF_NULL(tx_ud->files_ts.head);
FAIL_IF_NULL(tx_ud->files_ts.tail);
FAIL_IF(tx_ud->files_ts.tail->state != FILE_STATE_CLOSED);
FAIL_IF(tx_ud->files_ts.head == tx_ud->files_ts.tail);
FAIL_IF(tx_ud->files_ts.head->next != tx_ud->files_ts.tail);
FAIL_IF(StreamingBufferCompareRawData(tx_ud->files_ts.head->sb, (uint8_t *)"filecontent", 11) !=
1);
FAIL_IF(StreamingBufferCompareRawData(tx_ud->files_ts.tail->sb, (uint8_t *)"FILECONTENT", 11) !=
1);
AppLayerParserThreadCtxFree(alp_tctx);
StreamTcpFreeConfig(true);
UTHFreeFlow(f);
PASS;
}
/** \test POST, but not multipart */
static int HTPFileParserTest07(void)
{
uint8_t httpbuf1[] = "POST /filename HTTP/1.1\r\n"
"Host: www.server.lan\r\n"
"Content-Length: 11\r\n"
"\r\n";
uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
uint8_t httpbuf2[] = "FILECONTENT";
uint32_t httplen2 = sizeof(httpbuf2) - 1; /* minus the \0 */
TcpSession ssn;
HtpState *http_state = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&ssn, 0, sizeof(ssn));
Flow *f = UTHBuildFlow(AF_INET, "1.2.3.4", "1.2.3.5", 1024, 80);
FAIL_IF_NULL(f);
f->protoctx = &ssn;
f->proto = IPPROTO_TCP;
f->alproto = ALPROTO_HTTP1;
StreamTcpInitConfig(true);
SCLogDebug("\n>>>> processing chunk 1 size %u <<<<\n", httplen1);
int r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_START, httpbuf1, httplen1);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 2 size %u <<<<\n", httplen2);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf2, httplen2);
FAIL_IF_NOT(r == 0);
http_state = f->alstate;
FAIL_IF_NULL(http_state);
htp_tx_t *tx = AppLayerParserGetTx(IPPROTO_TCP, ALPROTO_HTTP1, http_state, 0);
FAIL_IF_NULL(tx);
FAIL_IF_NULL(tx->request_method);
FAIL_IF(memcmp(bstr_util_strdup_to_c(tx->request_method), "POST", 4) != 0);
HtpTxUserData *tx_ud = htp_tx_get_user_data(tx);
FAIL_IF_NULL(tx_ud);
FAIL_IF_NULL(tx_ud->files_ts.head);
FAIL_IF_NULL(tx_ud->files_ts.tail);
FAIL_IF(tx_ud->files_ts.tail->state != FILE_STATE_CLOSED);
FAIL_IF(StreamingBufferCompareRawData(tx_ud->files_ts.tail->sb, (uint8_t *)"FILECONTENT", 11) !=
1);
AppLayerParserThreadCtxFree(alp_tctx);
StreamTcpFreeConfig(true);
UTHFreeFlow(f);
PASS;
}
static int HTPFileParserTest08(void)
{
uint8_t httpbuf1[] = "POST /upload.cgi HTTP/1.1\r\n"
"Host: www.server.lan\r\n"
"Content-Type: multipart/form-data; boundary=---------------------------277531038314945\r\n"
"Content-Length: 215\r\n"
"\r\n"
"-----------------------------277531038314945\r\n"
"Content-Disposition: form-data; name=\"uploadfile_0\"; filename=\"somepicture1.jpg\"\r\n"
"Content-Type: image/jpeg\r\n";
uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
uint8_t httpbuf2[] = "filecontent\r\n\r\n"
"-----------------------------277531038314945--";
uint32_t httplen2 = sizeof(httpbuf2) - 1; /* minus the \0 */
TcpSession ssn;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
HtpState *http_state = NULL;
memset(&ssn, 0, sizeof(ssn));
Flow *f = UTHBuildFlow(AF_INET, "1.2.3.4", "1.2.3.5", 1024, 80);
FAIL_IF_NULL(f);
f->protoctx = &ssn;
f->proto = IPPROTO_TCP;
f->alproto = ALPROTO_HTTP1;
StreamTcpInitConfig(true);
SCLogDebug("\n>>>> processing chunk 1 <<<<\n");
int r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_START, httpbuf1, httplen1);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 2 size %u <<<<\n", httplen2);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf2, httplen2);
FAIL_IF_NOT(r == 0);
http_state = f->alstate;
FAIL_IF_NULL(http_state);
void *tx = AppLayerParserGetTx(IPPROTO_TCP, ALPROTO_HTTP1, f->alstate, 0);
FAIL_IF_NULL(tx);
AppLayerDecoderEvents *decoder_events =
AppLayerParserGetEventsByTx(IPPROTO_TCP, ALPROTO_HTTP1, tx);
FAIL_IF_NULL(decoder_events);
FAIL_IF(decoder_events->cnt != 2);
AppLayerParserThreadCtxFree(alp_tctx);
StreamTcpFreeConfig(true);
UTHFreeFlow(f);
PASS;
}
/** \test invalid header: Somereallylongheaderstr: has no value */
static int HTPFileParserTest09(void)
{
uint8_t httpbuf1[] = "POST /upload.cgi HTTP/1.1\r\n"
"Host: www.server.lan\r\n"
"Content-Type: multipart/form-data; boundary=---------------------------277531038314945\r\n"
"Content-Length: 337\r\n"
"\r\n";
uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
uint8_t httpbuf2[] = "-----------------------------277531038314945\r\n"
"Content-Disposition: form-data; name=\"email\"\r\n"
"\r\n"
"someaddress@somedomain.lan\r\n";
uint32_t httplen2 = sizeof(httpbuf2) - 1; /* minus the \0 */
uint8_t httpbuf3[] = "-----------------------------277531038314945\r\n"
"Content-Disposition: form-data; name=\"uploadfile_0\"; filename=\"somepicture1.jpg\"\r\n"
"Somereallylongheaderstr:\r\n"
"\r\n";
uint32_t httplen3 = sizeof(httpbuf3) - 1; /* minus the \0 */
uint8_t httpbuf4[] = "filecontent\r\n"
"-----------------------------277531038314945--";
uint32_t httplen4 = sizeof(httpbuf4) - 1; /* minus the \0 */
TcpSession ssn;
HtpState *http_state = NULL;
AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
memset(&ssn, 0, sizeof(ssn));
Flow *f = UTHBuildFlow(AF_INET, "1.2.3.4", "1.2.3.5", 1024, 80);
FAIL_IF_NULL(f);
f->protoctx = &ssn;
f->proto = IPPROTO_TCP;
f->alproto = ALPROTO_HTTP1;
StreamTcpInitConfig(true);
SCLogDebug("\n>>>> processing chunk 1 <<<<\n");
int r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_START, httpbuf1, httplen1);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 2 size %u <<<<\n", httplen2);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf2, httplen2);
FAIL_IF_NOT(r == 0);
SCLogDebug("\n>>>> processing chunk 3 size %u <<<<\n", httplen3);
r = AppLayerParserParse(
NULL, alp_tctx, f, ALPROTO_HTTP1, STREAM_TOSERVER | STREAM_EOF, httpbuf3, httplen3);