/* non-compressing recv token */
static int simple_recv_token(int f,char **data)
{
- static int residue = 0;
- static char *buf = NULL;
- int n;
-
- if (!buf) {
- buf = (char *)malloc(CHUNK_SIZE);
- if (!buf) out_of_memory("simple_recv_token");
- }
+ static int residue;
+ static char *buf;
+ int n;
+ if (!buf) {
+ buf = (char *)malloc(CHUNK_SIZE);
+ if (!buf) out_of_memory("simple_recv_token");
+ }
- if (residue == 0) {
- int i = read_int(f);
- if (i <= 0) return i;
- residue = i;
- }
+ if (residue == 0) {
+ int i = read_int(f);
+ if (i <= 0) return i;
+ residue = i;
+ }
- *data = buf;
- n = MIN(CHUNK_SIZE,residue);
- residue -= n;
- read_buf(f,buf,n);
- return n;
+ *data = buf;
+ n = MIN(CHUNK_SIZE,residue);
+ residue -= n;
+ read_buf(f,buf,n);
+ return n;
}
/* non-compressing send token */
static void simple_send_token(int f,int token,
- struct map_struct *buf,int offset,int n)
+ struct map_struct *buf,OFF_T offset,int n)
{
- if (n > 0) {
- int l = 0;
- while (l < n) {
- int n1 = MIN(CHUNK_SIZE,n-l);
- write_int(f,n1);
- write_buf(f,map_ptr(buf,offset+l,n1),n1);
- l += n1;
- }
- }
- write_int(f,-(token+1));
+ if (n > 0) {
+ int l = 0;
+ while (l < n) {
+ int n1 = MIN(CHUNK_SIZE,n-l);
+ write_int(f,n1);
+ write_buf(f,map_ptr(buf,offset+l,n1),n1);
+ l += n1;
+ }
+ }
+ /* a -2 token means to send data only and no token */
+ if (token != -2) {
+ write_int(f,-(token+1));
+ }
}
static z_stream tx_strm;
/* Output buffer */
-static char *obuf = NULL;
+static char *obuf;
/* Send a deflated token */
static void
send_deflated_token(int f, int token,
- struct map_struct *buf, int offset, int nb, int toklen)
+ struct map_struct *buf, OFF_T offset, int nb, int toklen)
{
int n, r;
static int init_done;
tx_strm.zalloc = z_alloc;
tx_strm.zfree = z_free;
if (deflateInit2(&tx_strm, Z_DEFAULT_COMPRESSION, 8,
- -15, 8, Z_DEFAULT_STRATEGY, -4) != Z_OK) {
- fprintf(FERROR, "compression init failed\n");
+ -15, 8, Z_DEFAULT_STRATEGY) != Z_OK) {
+ rprintf(FERROR, "compression init failed\n");
exit_cleanup(1);
}
if ((obuf = malloc(MAX_DATA_COUNT+2)) == NULL)
if (tx_strm.avail_in == 0 && nb != 0) {
/* give it some more input */
n = MIN(nb, CHUNK_SIZE);
- tx_strm.next_in = map_ptr(buf, offset, n);
+ tx_strm.next_in = (Bytef *)map_ptr(buf, offset, n);
tx_strm.avail_in = n;
nb -= n;
offset += n;
}
if (tx_strm.avail_out == 0) {
- tx_strm.next_out = obuf + 2;
+ tx_strm.next_out = (Bytef *)(obuf + 2);
tx_strm.avail_out = MAX_DATA_COUNT;
}
r = deflate(&tx_strm, nb? Z_NO_FLUSH: Z_PACKET_FLUSH);
if (r != Z_OK) {
- fprintf(FERROR, "deflate returned %d\n", r);
+ rprintf(FERROR, "deflate returned %d\n", r);
exit_cleanup(1);
}
if (nb == 0 || tx_strm.avail_out == 0) {
if (token != -1) {
/* add the data in the current block to the compressor's
history and hash table */
- tx_strm.next_in = map_ptr(buf, offset, toklen);
+ tx_strm.next_in = (Bytef *)map_ptr(buf, offset, toklen);
tx_strm.avail_in = toklen;
tx_strm.next_out = NULL;
tx_strm.avail_out = 2 * toklen;
r = deflate(&tx_strm, Z_INSERT_ONLY);
if (r != Z_OK || tx_strm.avail_in != 0) {
- fprintf(FERROR, "deflate on token returned %d (%d bytes left)\n",
+ rprintf(FERROR, "deflate on token returned %d (%d bytes left)\n",
r, tx_strm.avail_in);
exit_cleanup(1);
}
recv_deflated_token(int f, char **data)
{
int n, r, flag;
- static int init_done = 0;
+ static int init_done;
+ static int saved_flag;
for (;;) {
switch (recv_state) {
rx_strm.zalloc = z_alloc;
rx_strm.zfree = z_free;
if (inflateInit2(&rx_strm, -15) != Z_OK) {
- fprintf(FERROR, "inflate init failed\n");
+ rprintf(FERROR, "inflate init failed\n");
exit_cleanup(1);
}
if ((cbuf = malloc(MAX_DATA_COUNT)) == NULL
inflateReset(&rx_strm);
}
recv_state = r_idle;
+ rx_token = 0;
break;
case r_idle:
case r_inflated:
- flag = read_byte(f);
+ if (saved_flag) {
+ flag = saved_flag & 0xff;
+ saved_flag = 0;
+ } else
+ flag = read_byte(f);
if ((flag & 0xC0) == DEFLATED_DATA) {
n = ((flag & 0x3f) << 8) + read_byte(f);
read_buf(f, cbuf, n);
- rx_strm.next_in = cbuf;
+ rx_strm.next_in = (Bytef *)cbuf;
rx_strm.avail_in = n;
recv_state = r_inflating;
break;
if (recv_state == r_inflated) {
/* check previous inflated stuff ended correctly */
rx_strm.avail_in = 0;
- rx_strm.next_out = dbuf;
+ rx_strm.next_out = (Bytef *)dbuf;
rx_strm.avail_out = CHUNK_SIZE;
r = inflate(&rx_strm, Z_PACKET_FLUSH);
n = CHUNK_SIZE - rx_strm.avail_out;
- if (r != Z_OK || n != 0) {
- fprintf(FERROR, "inflate flush returned %d (%d bytes)\n",
+ if (r != Z_OK) {
+ rprintf(FERROR, "inflate flush returned %d (%d bytes)\n",
r, n);
exit_cleanup(1);
}
+ if (n != 0) {
+ /* have to return some more data and
+ save the flag for later. */
+ saved_flag = flag + 0x10000;
+ if (rx_strm.avail_out != 0)
+ recv_state = r_idle;
+ *data = dbuf;
+ return n;
+ }
recv_state = r_idle;
}
if (flag == END_FLAG) {
return -1 - rx_token;
case r_inflating:
- rx_strm.next_out = dbuf;
+ rx_strm.next_out = (Bytef *)dbuf;
rx_strm.avail_out = CHUNK_SIZE;
r = inflate(&rx_strm, Z_NO_FLUSH);
n = CHUNK_SIZE - rx_strm.avail_out;
- if (r != Z_OK || n == 0) {
- fprintf(FERROR, "inflate returned %d (%d bytes)\n", r, n);
+ if (r != Z_OK) {
+ rprintf(FERROR, "inflate returned %d (%d bytes)\n", r, n);
exit_cleanup(1);
}
- if (rx_strm.avail_out != 0)
+ if (rx_strm.avail_in == 0)
recv_state = r_inflated;
- *data = dbuf;
- return n;
+ if (n != 0) {
+ *data = dbuf;
+ return n;
+ }
+ break;
case r_running:
++rx_token;
{
int r;
- rx_strm.next_in = buf;
+ rx_strm.next_in = (Bytef *)buf;
rx_strm.avail_in = len;
r = inflateIncomp(&rx_strm);
if (r != Z_OK) {
- fprintf(FERROR, "inflateIncomp returned %d\n", r);
+ rprintf(FERROR, "inflateIncomp returned %d\n", r);
exit_cleanup(1);
}
}
* If token == -1 then we have reached EOF
* If n == 0 then don't send a buffer
*/
-void send_token(int f,int token,struct map_struct *buf,int offset,
+void send_token(int f,int token,struct map_struct *buf,OFF_T offset,
int n,int toklen)
{
if (!do_compression) {