Added multibase and cid

include/ipfs/cid/cid.h

@@ -0,0 +1,62 @@
+/***
+ * A content id
+ */
+
+#ifndef __IPFS_CID_CID_H
+#define __IPFS_CID_CID_H
+
+#define CID_PROTOBUF 0x70
+#define CID_CBOR 0x71
+#define CID_RAW 0x72
+#define CID_JSON 0x73
+#define CID_ETHEREUM_BLOCK 0x90
+#define CID_ETHEREUM_TX 0x91
+#define CID_BITCOIN_BLOCK 0xb0
+#define CID_BITCOIN_TX 0xb1
+#define CID_ZCASH_BLOCK 0xc0
+#define CID_ZCASH_TX 0xc1
+
+struct Cid {
+	int version;
+	char codec;
+	unsigned char* hash; // a multihash
+	size_t hash_length;
+};
+
+
+/**
+ * Create a new CID based on the given hash
+ * @param version the version
+ * @param hash the multihash
+ * @param hash_length the length of the multihash in bytes
+ * @param codec the codec to be used (NOTE: For version 0, this should be CID_PROTOBUF)
+ * @param cid where to put the results
+ * @returns true(1) on success
+ */
+int cid_new(int version, unsigned char* hash, size_t hash_length, const char codec, struct Cid* cid);
+
+/***
+ * Free the resources from a Cid
+ * @param cid the struct
+ * @returns 1
+ */
+int cid_free(struct Cid* cid);
+
+/***
+ * Fill a Cid struct based on a base 58 encoded string
+ * @param incoming the string
+ * @param incoming_size the size of the string
+ * @cid the Cid struct to fill
+ * @return true(1) on success
+ */
+int cid_decode_from_string(const unsigned char* incoming, size_t incoming_length, struct Cid* cid);
+
+/***
+ * Turn a multibase decoded string of bytes into a Cid struct
+ * @param incoming the multibase decoded array
+ * @param incoming_size the size of the array
+ * @param cid the Cid structure to fill
+ */
+int cid_cast(unsigned char* incoming, size_t incoming_size, struct Cid* cid);
+
+#endif

include/ipfs/multibase/multibase.h

@@ -0,0 +1,47 @@
+#include <stdio.h>
+
+#ifndef __IPFS_MULTIBASE_MULTIBASE_H__
+#define __IPFS_MULTIBASE_MULTIBASE_H__
+
+// the first digit of data, to determine the encoding used or using
+#define MULTIBASE_BASE1 '1'
+#define MULTIBASE_BASE2 '0'
+#define MULTIBASE_BASE8 '7'
+#define MULTIBASE_BASE10 '9'
+#define MULTIBASE_BASE16 'f'
+#define MULTIBASE_BASE58_FLICKR 'Z'
+#define MULTIBASE_BASE58_BTC 'z'
+
+/**
+ * Encode data in multibase format
+ * @param base the format to use (i.e. MULTIBASE_BASE58_BTC)
+ * @param incoming the data to encode
+ * @param incoming_length the length of the data to encode
+ * @param results where to put the results
+ * @param results_max_length the size of the results buffer
+ * @param results_length the size of the results after being encoded
+ * @returns true(1) on success
+ */
+int multibase_encode(const char base, const unsigned char* incoming, size_t incoming_length, unsigned char* results, size_t results_max_length, size_t* results_length);
+
+/***
+ * Calculates the size of the buffer neccessary to encode the incoming byte array
+ * @param base the encoding to use
+ * @param incoming the incoming array of bytes
+ * @param incoming_length the length of the array in bytes
+ * @returns the appropriate size of the buffer
+ */
+int multibase_encode_size(const char base, const unsigned char* incoming, size_t incoming_length);
+
+/**
+ * Decode data that was encoded in multibase format
+ * @param incoming the data to decode
+ * @param incoming_length the length of the data to decode
+ * @param results where to put the results
+ * @param results_max_length the size of the results buffer
+ * @param results_length the size of the results after being encoded
+ * @returns true(1) on success
+ */
+int multibase_decode(const unsigned char* incoming, size_t incoming_length, unsigned char* results, size_t results_max_length, size_t* results_length);
+
+#endif

include/ipfs/node/node.h

@@ -0,0 +1,14 @@
+/**
+ * An implementation of an IPFS node
+ * Copying the go-ipfs-node project
+ */
+
+#include <stdint.h>
+
+
+
+struct Link {
+	char* name;
+	uint64_t size;
+	struct Cid cid; // content id
+};