X-Git-Url: http://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=modules%2Fdeflate.c;h=7ec776667b3f24d0e271c0b90a5201d8dd9e2e3f;hp=c285b47fd7b5d13a14c8305fe9767c6a09a43caa;hb=f5a0b14163d8fff8b1ef7394d79f48496d5cd7bc;hpb=a51ffdeea95fdbbb21555408d3e5002ad7069c8a

diff --git a/modules/deflate.c b/modules/deflate.c
index c285b47..7ec7766 100644
--- a/modules/deflate.c
+++ b/modules/deflate.c
@@ -27,7 +27,7 @@
  * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
  * OR MODIFICATIONS.
  *
- * $Id: deflate.c,v 1.3 1996/06/26 00:53:16 paulus Exp $
+ * $Id: deflate.c,v 1.5 1997/04/30 05:43:39 paulus Exp $
  */
 
 #ifdef AIX4
@@ -50,6 +50,8 @@
 
 #if DO_DEFLATE
 
+#define DEFLATE_DEBUG	1
+
 /*
  * State for a Deflate (de)compressor.
  */
@@ -67,6 +69,7 @@ struct deflate_state {
 #define DEFLATE_OVHD	2		/* Deflate overhead/packet */
 
 static void	*z_alloc __P((void *, u_int items, u_int size));
+static void	*z_alloc_init __P((void *, u_int items, u_int size));
 static void	z_free __P((void *, void *ptr, u_int nb));
 static void	*z_comp_alloc __P((u_char *options, int opt_len));
 static void	*z_decomp_alloc __P((u_char *options, int opt_len));
@@ -111,7 +114,7 @@ struct compressor ppp_deflate = {
  * Space allocation and freeing routines for use by zlib routines.
  */
 static void *
-z_alloc(notused, items, size)
+z_alloc_init(notused, items, size)
     void *notused;
     u_int items, size;
 {
@@ -122,6 +125,14 @@ z_alloc(notused, items, size)
 #endif
 }
 
+static void *
+z_alloc(notused, items, size)
+    void *notused;
+    u_int items, size;
+{
+    return ALLOC_NOSLEEP(items * size);
+}
+
 static void
 z_free(notused, ptr, nbytes)
     void *notused;
@@ -151,12 +162,19 @@ z_comp_alloc(options, opt_len)
     if (w_size < DEFLATE_MIN_SIZE || w_size > DEFLATE_MAX_SIZE)
 	return NULL;
 
+
+#ifdef __osf__
+    state = (struct deflate_state *) ALLOC_SLEEP(sizeof(*state));
+#else
     state = (struct deflate_state *) ALLOC_NOSLEEP(sizeof(*state));
+#endif
+
     if (state == NULL)
 	return NULL;
 
     state->strm.next_in = NULL;
     state->strm.zalloc = (alloc_func) z_alloc;
+    state->strm.zalloc_init = (alloc_func) z_alloc_init;
     state->strm.zfree = (free_func) z_free;
     if (deflateInit2(&state->strm, Z_DEFAULT_COMPRESSION, DEFLATE_METHOD_VAL,
 		     -w_size, 8, Z_DEFAULT_STRATEGY, DEFLATE_OVHD+2) != Z_OK) {
@@ -383,12 +401,17 @@ z_decomp_alloc(options, opt_len)
     if (w_size < DEFLATE_MIN_SIZE || w_size > DEFLATE_MAX_SIZE)
 	return NULL;
 
+#ifdef __osf__
+    state = (struct deflate_state *) ALLOC_SLEEP(sizeof(*state));
+#else
     state = (struct deflate_state *) ALLOC_NOSLEEP(sizeof(*state));
+#endif
     if (state == NULL)
 	return NULL;
 
     state->strm.next_out = NULL;
     state->strm.zalloc = (alloc_func) z_alloc;
+    state->strm.zalloc_init = (alloc_func) z_alloc_init;
     state->strm.zfree = (free_func) z_free;
     if (inflateInit2(&state->strm, -w_size) != Z_OK) {
 	FREE(state, sizeof(*state));
@@ -489,7 +512,9 @@ z_decompress(arg, mi, mop)
     /* Check the sequence number. */
     seq = (hdr[PPP_HDRLEN] << 8) + hdr[PPP_HDRLEN+1];
     if (seq != state->seqno) {
+#if !DEFLATE_DEBUG
 	if (state->debug)
+#endif
 	    printf("z_decompress%d: bad seq # %d, expected %d\n",
 		   state->unit, seq, state->seqno);
 	return DECOMP_ERROR;
@@ -535,7 +560,9 @@ z_decompress(arg, mi, mop)
     for (;;) {
 	r = inflate(&state->strm, flush);
 	if (r != Z_OK) {
+#if !DEFLATE_DEBUG
 	    if (state->debug)
+#endif
 		printf("z_decompress%d: inflate returned %d (%s)\n",
 		       state->unit, r, (state->strm.msg? state->strm.msg: ""));
 	    freemsg(mo_head);
@@ -583,6 +610,12 @@ z_decompress(arg, mi, mop)
     mo->b_wptr += ospace - state->strm.avail_out;
     olen += ospace - state->strm.avail_out;
 
+#if DEFLATE_DEBUG
+    if (olen > state->mru + PPP_HDRLEN)
+	printf("ppp_deflate%d: exceeded mru (%d > %d)\n",
+	       state->unit, olen, state->mru + PPP_HDRLEN);
+#endif
+
     state->stats.unc_bytes += olen;
     state->stats.unc_packets++;
     state->stats.comp_bytes += rlen;
@@ -636,10 +669,11 @@ z_incomp(arg, mi)
 	r = inflateIncomp(&state->strm);
 	if (r != Z_OK) {
 	    /* gak! */
-	    if (state->debug) {
+#if !DEFLATE_DEBUG
+	    if (state->debug)
+#endif
 		printf("z_incomp%d: inflateIncomp returned %d (%s)\n",
 		       state->unit, r, (state->strm.msg? state->strm.msg: ""));
-	    }
 	    return;
 	}
 	mi = mi->b_cont;