int txop_ward_init(shpeer_t *cli_peer, tx_ward_t *ward)
{
unsigned char context[128];
shkey_t sig_key;
tx_context_t ctx;
tx_t *tx;
int err;
if (ward->ward_stamp == SHTIME_UNDEFINED)
ward->ward_stamp = shtime();
if (ward->ward_expire == SHTIME_UNDEFINED)
ward->ward_expire = shtime_adj(shtime(), MAX_SHARE_SESSION_TIME);
memcpy(&ward->ward_tx.tx_peer, shpeer_kpriv(sharedaemon_peer()), sizeof(shpeer_t));
memset(&ctx, 0, sizeof(ctx));
err = inittx_context(&ctx, get_tx_key(ward), ashkey_uniq());
if (err)
return (err);
err = tx_save(&ctx);
if (err)
return (err);
/* store key reference to generated context */
memcpy(&ward->ward_ctx, &ctx.ctx_tx.tx_key, sizeof(ward->ward_ctx));
return (0);
}
int txop_ward_confirm(shpeer_t *peer, tx_ward_t *ward)
{
tx_context_t *ctx;
tx_t *tx;
int err;
#if 0
/* verify identity exists */
ctx = (tx_context_t *)tx_load(TX_CONTEXT, &ward->ward_ctx);
if (!ctx)
return (SHERR_NOKEY);
/* .. */
pstore_free(ctx);
err = confirm_signature(&ward->ward_sig,
shpeer_kpriv(&ward->ward_peer), shkey_hex(&ward->ward_key));
pstore_free(tx);
if (err)
return (err);
err = inittx_context(ctx, get_tx_key(ward), ashkey_uniq());
if (err)
return (err);
#endif
return (0);
}
int txop_trust_init(shpeer_t *cli_peer, tx_trust_t *trust)
{
shkey_t *sig_key;
uint64_t crc;
int err;
if (!trust)
return (SHERR_INVAL);
if (shkey_cmp(&trust->trust_ctx, ashkey_blank()))
memcpy(&trust->trust_ctx, ashkey_uniq(), sizeof(trust->trust_ctx));
tx_sign(trust, &trust->trust_sig, &trust->trust_ctx);
return (0);
}
int shfs_rev_commit(shfs_ino_t *file, shfs_ino_t **rev_p)
{
shstat st;
shbuf_t *diff_buff;
shbuf_t *work_buff;
shbuf_t *head_buff;
shfs_ino_t *base;
shfs_ino_t *repo; /* SHINODE_REPOSITORY */
shfs_ino_t *new_rev; /* SHINODE_REVISION */
shfs_ino_t *delta; /* SHINODE_DELTA */
shkey_t *rev_key;
shfs_t *fs;
int err;
if (rev_p)
*rev_p = NULL;
head_buff = work_buff = diff_buff = NULL;
err = shfs_fstat(file, &st);
if (err)
return (err);
work_buff = shbuf_init();
err = shfs_read(file, work_buff);
if (err)
goto done;
base = shfs_rev_base(file);
if (base) {
/* obtain delta of current file data content against BASE revision's data content. */
head_buff = shbuf_init();
err = shfs_rev_ref_read(file, "tag", "BASE", head_buff);
if (err)
goto done;
if (shbuf_size(work_buff) == shbuf_size(head_buff) &&
0 == memcmp(shbuf_data(work_buff), shbuf_data(head_buff), shbuf_size(work_buff))) {
/* no difference */
err = SHERR_AGAIN;
goto done;
}
diff_buff = shbuf_init();
err = shdelta(work_buff, head_buff, diff_buff);
shbuf_free(&head_buff);
if (err)
return (err);
rev_key = shfs_token(base);
} else {
/* initial revision */
rev_key = ashkey_uniq();
}
repo = shfs_inode(file, NULL, SHINODE_REPOSITORY);
if (!repo) {
err = SHERR_IO;
goto done;
}
/* create a new revision using previous revision's inode name */
new_rev = shfs_inode(repo, (char *)shkey_hex(rev_key), SHINODE_REVISION);
if (!new_rev) {
err = SHERR_IO;
goto done;
}
/* define revision's meta information. */
shfs_meta_set(new_rev,
SHMETA_USER_NAME, (char *)get_libshare_account_name());
/* save delta to new revision */
err = shfs_rev_delta_write(new_rev, diff_buff);
shbuf_free(&diff_buff);
if (err)
goto done;
/* save new revision as BASE branch head */
err = shfs_rev_base_set(file, new_rev);
if (err)
goto done;
/* save work-data to BASE tag. */
err = shfs_rev_ref_write(file, "tag", "BASE", work_buff);
shbuf_free(&work_buff);
if (err)
goto done;
if (base) {
/* tag previous revision's key token onto revision inode. */
shfs_rev_tag(new_rev, "PREV", base);
}
if (rev_p)
*rev_p = new_rev;
done:
shbuf_free(&work_buff);
shbuf_free(&diff_buff);
shbuf_free(&head_buff);
return (err);
}
