gistfile1.c

#ifndef TC_H
#define TC_H

#define TC_BLOCK_SIZE 8192 /* Size of a Trenta block in bytes. */
#define TC_HASH_SIZE  40   /* Size of Trenta's block hash in bytes. */

struct tclient;
typedef struct tclient TClient;

typedef unsigned int  TLength;
typedef unsigned char TByte;

TClient *tc_create();
void     tc_free(TClient *client);

int  tc_connect(TClient *client, const char *host, int port);
void tc_disconnect(TClient *client);

/* These functions respectively read and write whole blocks.
 * In both cases, the `block' pointer is assumed to point to at
 * least TC_BLOCK_SIZE bytes of memory.
 */
int tc_read_block(TClient *client,  const TByte *hash, TByte *block);
int tc_write_block(TClient *client, const TByte *hash, TByte *block);

/* These functions respectively read and write indices.
 * In the read case, hashes and nhashes are populated by the `tc_read_index',
 * and `*hashes' must be freed by the caller when done.
 */
int tc_read_index(TClient *client, const TByte *name,
                  TLength length, TByte **hashes, TLength *nhashes);
int tc_write_index(TClient *client, const TByte *name,
                   TLength length, TByte *hashes, TLength nhashes);

#endif /* TC_H */