ssize_t curve25519_encode(struct curve25519_struct *curve, struct curve25519_proto *proto,
unsigned char *plaintext, size_t size, unsigned char **chipertext)
{
int ret, i;
ssize_t done = size;
struct taia packet_taia;
spinlock_lock(&curve->enc_lock);
if (unlikely(size > curve->enc_buf_size)) {
done = -ENOMEM;
goto out;
}
taia_now(&packet_taia);
taia_pack(proto->enonce + NONCE_OFFSET, &packet_taia);
memset(curve->enc_buf, 0, curve->enc_buf_size);
ret = crypto_box_afternm(curve->enc_buf, plaintext, size, proto->enonce, proto->key);
if (unlikely(ret)) {
done = -EIO;
goto out;
}
fmemcpy(curve->enc_buf + crypto_box_boxzerobytes - NONCE_LENGTH,
proto->enonce + NONCE_OFFSET, NONCE_LENGTH);
for (i = 0; i < crypto_box_boxzerobytes - NONCE_LENGTH; ++i)
curve->enc_buf[i] = (uint8_t) secrand();
(*chipertext) = curve->enc_buf;
out:
spinlock_unlock(&curve->enc_lock);
return done;
}
static int proto_encode(sigma_proto *instance, uint8_t* input, uint8_t* output, size_t len)
{
sigma_proto_nacl* inst = (sigma_proto_nacl*) instance;
uint8_t tempbufferinput[len + crypto_box_ZEROBYTES];
bzero(tempbufferinput, crypto_box_ZEROBYTES);
memcpy(tempbufferinput + crypto_box_ZEROBYTES, input, len);
len += crypto_box_ZEROBYTES;
taia_now(&inst->cdtaie);
taia_pack(inst->encnonce + nonceoffset, &(inst->cdtaie));
int result = crypto_box_afternm(
output,
tempbufferinput,
len,
inst->encnonce,
((sigma_proto_nacl*) instance)->precomp
);
if (result)
{
fprintf(stderr, "Encryption failed (length %u, given result %i)\n", (unsigned) len, result);
errno = EINVAL;
return -1;
}
memcpy(output, inst->encnonce + nonceoffset, noncelength);
return len;
}
unsigned fmt_taia25(char *s, struct taia *t) {
static char pack[TAIA_PACK];
taia_pack(pack, t);
*s++ = '@';
bin2hex(s, pack, 12);
return 25;
}
std::string Taia::encode() {
char pack[TAIA_PACK_SIZE];
char buffer[TAI64N_ENCODE_SIZE + 1];
taia_pack(pack, &data);
tai64n_encode(buffer, pack);
buffer[TAI64N_ENCODE_SIZE] = 0;
return std::string(buffer);
}
void modify_entry(struct cdbb *a, struct taia *k, char *v, size_t vs)
{
char pk[TAIA_PACK];
taia_pack(pk, k);
cdbb_mod(a, pk, TAIA_PACK, v, vs);
blog_modified(a);
}
int main() {
char buf[TAI64NA_ENCODE_SIZE];
taia_t t = TAIA_INIT;
taia_t u = TAIA_INIT;
char pt[TAIA_PACK_SIZE];
char pu[TAIA_PACK_SIZE];
t.sec = UINT64_MAX;
t.nano = UINT32_MAX;
t.atto = UINT32_MAX;
int i;
for (i = 0; i <= 32; i++) {
taia_pack(pt, &t);
tai64na_encode(buf, pt);
tai64na_decode(pu, buf);
taia_unpack(&u, pu);
if (taia_cmp(&t, &u) != 0)
return 1;
t.sec >>= 2;
t.nano >>= 1;
t.atto >>= 1;
}
t.sec = UINT64_MAX;
t.nano = UINT32_MAX;
t.atto = UINT32_MAX;
for (i = 0; i <= 32; i++) {
taia_pack(pt, &t);
tai64na_encode(buf, pt);
tai64na_decode(pu, buf);
taia_unpack(&u, pu);
if (taia_cmp(&t, &u) != 0)
return 1;
t.sec <<= 2;
t.nano <<= 1;
t.atto <<= 1;
}
return 0;
}
static void blog_modified(struct cdbb *a)
{
char pk[TAIA_PACK];
struct taia t;
taia_now(&t);
taia_pack(pk, &t);
cdbb_rep(a, DB_LAST_MODIFIED, 13, pk, TAIA_PACK);
}
int show_entry(struct cdbb *a, struct taia *k, struct nentry *n)
{
int err;
char pac[TAIA_PACK];
taia_pack(pac, k);
err = cdbb_read_nentry(a, pac, TAIA_PACK, n);
return err;
}
void
profile(const char *s)
{
#ifdef ENABLE_PROFILE
char buf[TAIA_PACK];
struct taia t;
taia_now(&t);
taia_pack(buf,&t);
logit(LOG_PROFILE, "PROFILE: %s @%s\n", s, buf);
#endif
}
void pidchange(void)
{
struct taia now;
unsigned long u;
taia_now(&now);
taia_pack(status,&now);
u = (unsigned long) pid;
status[12] = u; u >>= 8;
status[13] = u; u >>= 8;
status[14] = u; u >>= 8;
status[15] = u;
}
PyObject *pytaia_now_pack(PyObject *self){
PyObject *ret;
unsigned char *tpad;
tpad = PyMem_Malloc(16);
if (!tpad)
return PyErr_NoMemory();
taia_now(tpad);
taia_pack(tpad,tpad);
ret = PyBytes_FromStringAndSize((char *)tpad,16);
PyMem_Free(tpad);
return ret;}
static void pidchange()
{
struct taia now;
unsigned long u;
taia_now(&now);
taia_pack(status, &now);
u = (unsigned long) pid;
status[16] = u; u >>= 8;
status[17] = u; u >>= 8;
status[18] = u; u >>= 8;
status[19] = u;
}
void delete_entry(struct cdbb *a, struct taia *k)
{
char pk[TAIA_PACK];
array dayidx;
memset(&dayidx, 0, sizeof(array));
fmt_day_idx(&dayidx, k);
taia_pack(pk, k);
cdbb_del(a, pk, TAIA_PACK);
cdbb_del_val(a, dayidx.p, array_bytes(&dayidx), pk, TAIA_PACK);
blog_modified(a);
}
int sv_stat_save(char *path, sv_stat_t *svst) {
int fd;
array_t new_path = ARRAY_INIT(1);
int r;
char status[SUPERVISE_STATUS_SIZE];
uint32_t tmp;
/* Pack the svstat data into the status byte array. */
taia_pack(status, &svst->timestamp);
tmp = svst->pid;
((uint32_t *)status)[3] = htobe32(tmp);
status[16] = svst->paused;
status[17] = svst->mode;
/* Construct the path for the .new file into the array which *MUST* be freed
* before returning. */
array_append(&new_path, path, strlen(path));
array_append(&new_path, SUPERVISE_STATUS_NEW_EXT, strlen(SUPERVISE_STATUS_NEW_EXT));
array_append_null(&new_path);
if (array_failed(&new_path)) {
array_reset(&new_path);
errno = ENOMEM;
return -1;
}
/* Open the tmp file, write the status byte array to it, verify the entire
* array was written, and finally rename it to status. */
fd = open_trunc(array_start(&new_path));
if (fd == -1) {
array_reset(&new_path);
return ESVOPENSTATNEW;
}
r = write(fd, status, SUPERVISE_STATUS_SIZE);
if ((r == -1) || (r != SUPERVISE_STATUS_SIZE)) {
close(fd);
array_reset(&new_path);
return ESVWRITESTATNEW;
}
close(fd);
if (rename(array_start(&new_path), path) == -1) {
array_reset(&new_path);
return ESVWRITESTAT;
}
array_reset(&new_path);
return 0;
}
void timestamp(char s[TIMESTAMP])
{
struct taia now;
char nowpack[TAIA_PACK];
int i;
taia_now(&now);
taia_pack(nowpack,&now);
s[0] = '@';
for (i = 0;i < 12;++i) {
s[i * 2 + 1] = hex[(nowpack[i] >> 4) & 15];
s[i * 2 + 2] = hex[nowpack[i] & 15];
}
}
void add_entry(struct cdbb *a, struct taia *k, char *v, size_t vs)
{
char pk[TAIA_PACK];
array dayidx;
memset(&dayidx, 0, sizeof(array));
fmt_day_idx(&dayidx, k);
taia_pack(pk, k);
/* entry + idx */
cdbb_add(a, pk, TAIA_PACK, v, vs);
cdbb_add(a, dayidx.p, array_bytes(&dayidx), pk, TAIA_PACK);
blog_modified(a);
array_reset(&dayidx);
}