http: configures libhtp to allow spaces in uri

Ticket: OISF#2881

configure.ac

@@ -1591,6 +1591,7 @@
         AC_CHECK_LIB([htp], [htp_tx_get_response_headers_raw],AC_DEFINE_UNQUOTED([HAVE_HTP_TX_GET_RESPONSE_HEADERS_RAW],[1],[Found htp_tx_get_response_headers_raw in libhtp]) ,,[-lhtp])
         AC_CHECK_LIB([htp], [htp_decode_query_inplace],AC_DEFINE_UNQUOTED([HAVE_HTP_DECODE_QUERY_INPLACE],[1],[Found htp_decode_query_inplace function in libhtp]) ,,[-lhtp])
         AC_CHECK_LIB([htp], [htp_config_set_response_decompression_layer_limit],AC_DEFINE_UNQUOTED([HAVE_HTP_CONFIG_SET_RESPONSE_DECOMPRESSION_LAYER_LIMIT],[1],[Found htp_config_set_response_decompression_layer_limit function in libhtp]) ,,[-lhtp])
+        AC_CHECK_LIB([htp], [htp_config_set_allow_space_uri],AC_DEFINE_UNQUOTED([HAVE_HTP_CONFIG_SET_ALLOW_SPACE_URI],[1],[Found htp_config_set_allow_space_uri function in libhtp]) ,,[-lhtp])
         AC_EGREP_HEADER(htp_config_set_path_decode_u_encoding, htp/htp.h, AC_DEFINE_UNQUOTED([HAVE_HTP_SET_PATH_DECODE_U_ENCODING],[1],[Found usable htp_config_set_path_decode_u_encoding function in libhtp]) )
         AC_CHECK_LIB([htp], [htp_config_set_lzma_memlimit],AC_DEFINE_UNQUOTED([HAVE_HTP_CONFIG_SET_LZMA_MEMLIMIT],[1],[Found htp_config_set_lzma_memlimit function in libhtp]) ,,[-lhtp])
         AC_CHECK_LIB([htp], [htp_config_set_lzma_layers],AC_DEFINE_UNQUOTED([HAVE_HTP_CONFIG_SET_LZMA_LAYERS],[1],[Found htp_config_set_lzma_layers function in libhtp]) ,,[-lhtp])
@@ -1616,6 +1617,7 @@
             AC_DEFINE_UNQUOTED([HAVE_HTP_DECODE_QUERY_INPLACE],[1],[Assuming htp_decode_query_inplace function in bundled libhtp])
             # enable when libhtp has been updated
             AC_DEFINE_UNQUOTED([HAVE_HTP_CONFIG_SET_RESPONSE_DECOMPRESSION_LAYER_LIMIT],[1],[Assuming htp_config_set_response_decompression_layer_limit function in bundled libhtp])
+            AC_DEFINE_UNQUOTED([HAVE_HTP_CONFIG_SET_ALLOW_SPACE_URI],[1],[Assuming htp_config_set_allow_space_uri function in bundled libhtp])
             AC_DEFINE_UNQUOTED([HAVE_HTP_CONFIG_SET_LZMA_MEMLIMIT],[1],[Assuming htp_config_set_lzma_memlimit function in bundled libhtp])
             AC_DEFINE_UNQUOTED([HAVE_HTP_CONFIG_SET_LZMA_LAYERS],[1],[Assuming htp_config_set_lzma_layers function in bundled libhtp])
             AC_DEFINE_UNQUOTED([HAVE_HTP_CONFIG_SET_COMPRESSION_BOMB_LIMIT],[1],[Assuming htp_config_set_compression_bomb_limit function in bundled libhtp])

doc/userguide/upgrade.rst

@@ -47,6 +47,9 @@ Major changes
   <https://forum.suricata.io/t/my-traffic-gets-blocked-after-upgrading-to-suricata-7>`_.
 - New protocols enabled by default: bittorrent-dht, quic, http2.
 - The telnet protocol is also enabled by default, but only for the ``app-layer``.
+- Spaces are accepted in HTTP1 URIs instead of in the protocol version. That is:
+  `GET /a b HTTP/1.1` gets now URI as `/a b` and protocol as `HTTP/1.1` when
+  it used to be URI as `/a` and protocol as `b HTTP/1.1`
 
 Security changes
 ~~~~~~~~~~~~~~~~

src/app-layer-htp.c

@@ -2496,6 +2496,9 @@ static void HTPConfigSetDefaultsPhase1(HTPCfgRec *cfg_prec)
     htp_config_register_response_complete(cfg_prec->cfg, HTPCallbackResponseComplete);
 
     htp_config_set_parse_request_cookies(cfg_prec->cfg, 0);
+#ifdef HAVE_HTP_CONFIG_SET_ALLOW_SPACE_URI
+    htp_config_set_allow_space_uri(cfg_prec->cfg, 1);
+#endif
 
     /* don't convert + to space by default */
     htp_config_set_plusspace_decode(cfg_prec->cfg, HTP_DECODER_URLENCODED, 0);