Initial import from SVN

1 files changed, 112 insertions, 0 deletions

diff --git a/src/lib/protocols/ipp.c b/src/lib/protocols/ipp.c
new file mode 100644
index 000000000..72a75bc2a
--- /dev/null
+++ b/src/lib/protocols/ipp.c
@@ -0,0 +1,112 @@
+/*
+ * ipp.c
+ *
+ * Copyright (C) 2009-2011 by ipoque GmbH
+ * Copyright (C) 2011-15 - ntop.org
+ *
+ * This file is part of nDPI, an open source deep packet inspection
+ * library based on the OpenDPI and PACE technology by ipoque GmbH
+ *
+ * nDPI 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * nDPI 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 nDPI.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+
+
+#include "ndpi_protocols.h"
+#ifdef NDPI_PROTOCOL_IPP
+
+static void ndpi_int_ipp_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
+					struct ndpi_flow_struct *flow, ndpi_protocol_type_t protocol_type)
+{
+	ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_IPP, protocol_type);
+}
+
+void ndpi_search_ipp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+	struct ndpi_packet_struct *packet = &flow->packet;	
+//      struct ndpi_id_struct         *src=ndpi_struct->src;
+//      struct ndpi_id_struct         *dst=ndpi_struct->dst;
+
+	u_int8_t i;
+
+	NDPI_LOG(NDPI_PROTOCOL_IPP, ndpi_struct, NDPI_LOG_DEBUG, "search ipp\n");
+	if (packet->payload_packet_len > 20) {
+
+		NDPI_LOG(NDPI_PROTOCOL_IPP, ndpi_struct, NDPI_LOG_DEBUG,
+				"searching for a payload with a pattern like 'number(1to8)blanknumber(1to3)ipp://.\n");
+		/* this pattern means that there is a printer saying that his state is idle,
+		 * means that he is not printing anything at the moment */
+		i = 0;
+
+		if (packet->payload[i] < '0' || packet->payload[i] > '9') {
+			NDPI_LOG(NDPI_PROTOCOL_IPP, ndpi_struct, NDPI_LOG_DEBUG, "payload does not begin with a number.\n");
+			goto search_for_next_pattern;
+		}
+
+		for (;;) {
+			i++;
+			if (!((packet->payload[i] >= '0' && packet->payload[i] <= '9') ||
+				  (packet->payload[i] >= 'a' && packet->payload[i] <= 'f') ||
+				  (packet->payload[i] >= 'A' && packet->payload[i] <= 'F')) || i > 8) {
+				NDPI_LOG(NDPI_PROTOCOL_IPP, ndpi_struct, NDPI_LOG_DEBUG,
+						"read symbols while the symbol is a number.\n");
+				break;
+			}
+		}
+
+		if (packet->payload[i++] != ' ') {
+			NDPI_LOG(NDPI_PROTOCOL_IPP, ndpi_struct, NDPI_LOG_DEBUG, "there is no blank following the number.\n");
+			goto search_for_next_pattern;
+		}
+
+		if (packet->payload[i] < '0' || packet->payload[i] > '9') {
+			NDPI_LOG(NDPI_PROTOCOL_IPP, ndpi_struct, NDPI_LOG_DEBUG, "no number following the blank.\n");
+			goto search_for_next_pattern;
+		}
+
+		for (;;) {
+			i++;
+			if (packet->payload[i] < '0' || packet->payload[i] > '9' || i > 12) {
+				NDPI_LOG(NDPI_PROTOCOL_IPP, ndpi_struct, NDPI_LOG_DEBUG,
+						"read symbols while the symbol is a number.\n");
+				break;
+			}
+		}
+
+		if (memcmp(&packet->payload[i], " ipp://", 7) != 0) {
+			NDPI_LOG(NDPI_PROTOCOL_IPP, ndpi_struct, NDPI_LOG_DEBUG, "the string ' ipp://' does not follow.\n");
+			goto search_for_next_pattern;
+		}
+
+		NDPI_LOG(NDPI_PROTOCOL_IPP, ndpi_struct, NDPI_LOG_DEBUG, "found ipp\n");
+		ndpi_int_ipp_add_connection(ndpi_struct, flow, NDPI_REAL_PROTOCOL);
+		return;
+	}
+
+  search_for_next_pattern:
+
+	if (packet->payload_packet_len > 3 && memcmp(packet->payload, "POST", 4) == 0) {
+		ndpi_parse_packet_line_info(ndpi_struct, flow);
+		if (packet->content_line.ptr != NULL && packet->content_line.len > 14
+			&& memcmp(packet->content_line.ptr, "application/ipp", 15) == 0) {
+			NDPI_LOG(NDPI_PROTOCOL_IPP, ndpi_struct, NDPI_LOG_DEBUG, "found ipp via POST ... application/ipp.\n");
+			ndpi_int_ipp_add_connection(ndpi_struct, flow, NDPI_CORRELATED_PROTOCOL);
+			return;
+		}
+	}
+	NDPI_LOG(NDPI_PROTOCOL_IPP, ndpi_struct, NDPI_LOG_DEBUG, "no ipp detected.\n");
+	NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_IPP);
+}
+
+#endif