low level name and packet parsing was added (You may edit external dependency to OpenSSL in root wscript file)
diff --git a/model/ccn_coding.h b/model/ccn_coding.h
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+++ b/model/ccn_coding.h
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+/*
+ * ccn_coding.h
+ * Abstraction
+ *
+ * Created by Ilya on 7/29/11.
+ * Copyright 2011 __MyCompanyName__. All rights reserved.
+ *
+ */
+
+/**
+ * @file ccn/coding.h
+ *
+ * Details of the ccn binary wire encoding.
+ *
+ * Part of the CCNx C Library.
+ *
+ * Copyright (C) 2008-2010 Palo Alto Research Center, Inc.
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation.
+ * This library 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 this library;
+ * if not, write to the Free Software Foundation, Inc., 51 Franklin Street,
+ * Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef CCN_CODING_DEFINED
+#define CCN_CODING_DEFINED
+
+#include <sys/types.h>
+#include <stddef.h>
+
+#define CCN_TT_BITS 3
+#define CCN_TT_MASK ((1 << CCN_TT_BITS) - 1)
+#define CCN_MAX_TINY ((1 << (7-CCN_TT_BITS)) - 1)
+#define CCN_TT_HBIT ((unsigned char)(1 << 7))
+
+/**
+ * Type tag for a ccnb start marker.
+ */
+enum ccn_tt {
+ CCN_EXT, /**< starts composite extension - numval is subtype */
+ CCN_TAG, /**< starts composite - numval is tagnamelen-1 */
+ CCN_DTAG, /**< starts composite - numval is tagdict index (enum ccn_dtag) */
+ CCN_ATTR, /**< attribute - numval is attrnamelen-1, value follows */
+ CCN_DATTR, /**< attribute numval is attrdict index */
+ CCN_BLOB, /**< opaque binary data - numval is byte count */
+ CCN_UDATA, /**< UTF-8 encoded character data - numval is byte count */
+ CCN_NO_TOKEN /**< should not occur in encoding */
+};
+
+/** CCN_CLOSE terminates composites */
+#define CCN_CLOSE ((unsigned char)(0))
+
+enum ccn_ext_subtype {
+ /* skip smallest values for now */
+ CCN_PROCESSING_INSTRUCTIONS = 16 /* <?name:U value:U?> */
+};
+
+/**
+ * DTAG identifies ccnb-encoded elements.
+ * c.f. tagname.csvdict
+ * See the gen_enum_dtag script for help updating these.
+ */
+enum ccn_dtag {
+ CCN_DTAG_Any = 13,
+ CCN_DTAG_Name = 14,
+ CCN_DTAG_Component = 15,
+ CCN_DTAG_Certificate = 16,
+ CCN_DTAG_Collection = 17,
+ CCN_DTAG_CompleteName = 18,
+ CCN_DTAG_Content = 19,
+ CCN_DTAG_SignedInfo = 20,
+ CCN_DTAG_ContentDigest = 21,
+ CCN_DTAG_ContentHash = 22,
+ CCN_DTAG_Count = 24,
+ CCN_DTAG_Header = 25,
+ CCN_DTAG_Interest = 26, /* 20090915 */
+ CCN_DTAG_Key = 27,
+ CCN_DTAG_KeyLocator = 28,
+ CCN_DTAG_KeyName = 29,
+ CCN_DTAG_Length = 30,
+ CCN_DTAG_Link = 31,
+ CCN_DTAG_LinkAuthenticator = 32,
+ CCN_DTAG_NameComponentCount = 33, /* DeprecatedInInterest */
+ CCN_DTAG_RootDigest = 36,
+ CCN_DTAG_Signature = 37,
+ CCN_DTAG_Start = 38,
+ CCN_DTAG_Timestamp = 39,
+ CCN_DTAG_Type = 40,
+ CCN_DTAG_Nonce = 41,
+ CCN_DTAG_Scope = 42,
+ CCN_DTAG_Exclude = 43,
+ CCN_DTAG_Bloom = 44,
+ CCN_DTAG_BloomSeed = 45,
+ CCN_DTAG_AnswerOriginKind = 47,
+ CCN_DTAG_InterestLifetime = 48,
+ CCN_DTAG_Witness = 53,
+ CCN_DTAG_SignatureBits = 54,
+ CCN_DTAG_DigestAlgorithm = 55,
+ CCN_DTAG_BlockSize = 56,
+ CCN_DTAG_FreshnessSeconds = 58,
+ CCN_DTAG_FinalBlockID = 59,
+ CCN_DTAG_PublisherPublicKeyDigest = 60,
+ CCN_DTAG_PublisherCertificateDigest = 61,
+ CCN_DTAG_PublisherIssuerKeyDigest = 62,
+ CCN_DTAG_PublisherIssuerCertificateDigest = 63,
+ CCN_DTAG_ContentObject = 64, /* 20090915 */
+ CCN_DTAG_WrappedKey = 65,
+ CCN_DTAG_WrappingKeyIdentifier = 66,
+ CCN_DTAG_WrapAlgorithm = 67,
+ CCN_DTAG_KeyAlgorithm = 68,
+ CCN_DTAG_Label = 69,
+ CCN_DTAG_EncryptedKey = 70,
+ CCN_DTAG_EncryptedNonceKey = 71,
+ CCN_DTAG_WrappingKeyName = 72,
+ CCN_DTAG_Action = 73,
+ CCN_DTAG_FaceID = 74,
+ CCN_DTAG_IPProto = 75,
+ CCN_DTAG_Host = 76,
+ CCN_DTAG_Port = 77,
+ CCN_DTAG_MulticastInterface = 78,
+ CCN_DTAG_ForwardingFlags = 79,
+ CCN_DTAG_FaceInstance = 80,
+ CCN_DTAG_ForwardingEntry = 81,
+ CCN_DTAG_MulticastTTL = 82,
+ CCN_DTAG_MinSuffixComponents = 83,
+ CCN_DTAG_MaxSuffixComponents = 84,
+ CCN_DTAG_ChildSelector = 85,
+ CCN_DTAG_RepositoryInfo = 86,
+ CCN_DTAG_Version = 87,
+ CCN_DTAG_RepositoryVersion = 88,
+ CCN_DTAG_GlobalPrefix = 89,
+ CCN_DTAG_LocalName = 90,
+ CCN_DTAG_Policy = 91,
+ CCN_DTAG_Namespace = 92,
+ CCN_DTAG_GlobalPrefixName = 93,
+ CCN_DTAG_PolicyVersion = 94,
+ CCN_DTAG_KeyValueSet = 95,
+ CCN_DTAG_KeyValuePair = 96,
+ CCN_DTAG_IntegerValue = 97,
+ CCN_DTAG_DecimalValue = 98,
+ CCN_DTAG_StringValue = 99,
+ CCN_DTAG_BinaryValue = 100,
+ CCN_DTAG_NameValue = 101,
+ CCN_DTAG_Entry = 102,
+ CCN_DTAG_ACL = 103,
+ CCN_DTAG_ParameterizedName = 104,
+ CCN_DTAG_Prefix = 105,
+ CCN_DTAG_Suffix = 106,
+ CCN_DTAG_Root = 107,
+ CCN_DTAG_ProfileName = 108,
+ CCN_DTAG_Parameters = 109,
+ CCN_DTAG_InfoString = 110,
+ CCN_DTAG_StatusResponse = 112,
+ CCN_DTAG_StatusCode = 113,
+ CCN_DTAG_StatusText = 114,
+ CCN_DTAG_SequenceNumber = 256,
+ CCN_DTAG_CCNProtocolDataUnit = 17702112
+};
+
+struct ccn_dict_entry {
+ int index; /**< matches enum ccn_dtag above */
+ const char *name; /**< textual name of dtag */
+};
+
+struct ccn_dict {
+ int count; /**< Count of elements in the table */
+ const struct ccn_dict_entry *dict; /**< the table entries */
+};
+
+/**
+ * Table for translating from DTAGs to names and vice versa.
+ */
+extern const struct ccn_dict ccn_dtag_dict; /* matches enum ccn_dtag above */
+
+struct ccn_skeleton_decoder { /* initialize to all 0 */
+ ssize_t index; /**< Number of bytes processed */
+ int state; /**< Decoder state */
+ int nest; /**< Element nesting */
+ size_t numval; /**< Current numval, meaning depends on state */
+ size_t token_index; /**< Starting index of most-recent token */
+ size_t element_index; /**< Starting index of most-recent element */
+};
+
+/**
+ * The decoder state is one of these, possibly with some
+ * additional bits set for internal use. A complete parse
+ * ends up in state 0 or an error state. Not all possible
+ * error states are listed here.
+ */
+enum ccn_decoder_state {
+ CCN_DSTATE_INITIAL = 0,
+ CCN_DSTATE_NEWTOKEN,
+ CCN_DSTATE_NUMVAL,
+ CCN_DSTATE_UDATA,
+ CCN_DSTATE_TAGNAME,
+ CCN_DSTATE_ATTRNAME,
+ CCN_DSTATE_BLOB,
+ /* All error states are negative */
+ CCN_DSTATE_ERR_OVERFLOW = -1,
+ CCN_DSTATE_ERR_ATTR = -2,
+ CCN_DSTATE_ERR_CODING = -3,
+ CCN_DSTATE_ERR_NEST = -4,
+ CCN_DSTATE_ERR_BUG = -5
+};
+
+/**
+ * If the CCN_DSTATE_PAUSE bit is set in the decoder state,
+ * the decoder will return just after recognizing each token.
+ * In this instance, use CCN_GET_TT_FROM_DSTATE() to extract
+ * the token type from the decoder state;
+ * CCN_CLOSE will be reported as CCN_NO_TOKEN.
+ * The pause bit persists, so the end test should take that into account
+ * by using the CCN_FINAL_DSTATE macro instead of testing for state 0.
+ */
+#define CCN_DSTATE_PAUSE (1 << 15)
+#define CCN_GET_TT_FROM_DSTATE(state) (CCN_TT_MASK & ((state) >> 16))
+#define CCN_FINAL_DSTATE(state) (((state) & (CCN_DSTATE_PAUSE-1)) == 0)
+
+ssize_t ccn_skeleton_decode(struct ccn_skeleton_decoder *d,
+ const unsigned char *p,
+ size_t n);
+
+#endif
+