X-Git-Url: http://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=netbsd-1.1%2Fppp-deflate.c;h=213bf0e2e38732436cb27ff45c75d82054b07916;hp=cb4bd7ee52b152ad48760fcbcfb79850a5721983;hb=91fe5eefe0e7b0e46b2df9dd1d5b54a545a5b432;hpb=d017f904e9ba71b481f4a123b60cd9fc46d27e0a

diff --git a/netbsd-1.1/ppp-deflate.c b/netbsd-1.1/ppp-deflate.c
index cb4bd7e..213bf0e 100644
--- a/netbsd-1.1/ppp-deflate.c
+++ b/netbsd-1.1/ppp-deflate.c
@@ -1,4 +1,4 @@
-/*	$Id: ppp-deflate.c,v 1.2 1996/04/04 03:23:09 paulus Exp $	*/
+/*	$Id: ppp-deflate.c,v 1.8 1998/03/24 23:48:04 paulus Exp $	*/
 
 /*
  * ppp_deflate.c - interface the zlib procedures for Deflate compression
@@ -41,6 +41,8 @@
 
 #if DO_DEFLATE
 
+#define DEFLATE_DEBUG	1
+
 /*
  * State for a Deflate (de)compressor.
  */
@@ -58,7 +60,7 @@ struct deflate_state {
 #define DEFLATE_OVHD	2		/* Deflate overhead/packet */
 
 static void	*zalloc __P((void *, u_int items, u_int size));
-static void	zfree __P((void *, void *ptr, u_int nb));
+static void	zfree __P((void *, void *ptr));
 static void	*z_comp_alloc __P((u_char *options, int opt_len));
 static void	*z_decomp_alloc __P((u_char *options, int opt_len));
 static void	z_comp_free __P((void *state));
@@ -96,6 +98,23 @@ struct compressor ppp_deflate = {
     z_comp_stats,		/* decomp_stat */
 };
 
+struct compressor ppp_deflate = {
+    CI_DEFLATE_DRAFT,		/* compress_proto */
+    z_comp_alloc,		/* comp_alloc */
+    z_comp_free,		/* comp_free */
+    z_comp_init,		/* comp_init */
+    z_comp_reset,		/* comp_reset */
+    z_compress,			/* compress */
+    z_comp_stats,		/* comp_stat */
+    z_decomp_alloc,		/* decomp_alloc */
+    z_decomp_free,		/* decomp_free */
+    z_decomp_init,		/* decomp_init */
+    z_decomp_reset,		/* decomp_reset */
+    z_decompress,		/* decompress */
+    z_incomp,			/* incomp */
+    z_comp_stats,		/* decomp_stat */
+};
+
 /*
  * Space allocation and freeing routines for use by zlib routines.
  */
@@ -111,10 +130,9 @@ zalloc(notused, items, size)
 }
 
 void
-zfree(notused, ptr, nbytes)
+zfree(notused, ptr)
     void *notused;
     void *ptr;
-    u_int nbytes;
 {
     FREE(ptr, M_DEVBUF);
 }
@@ -130,7 +148,8 @@ z_comp_alloc(options, opt_len)
     struct deflate_state *state;
     int w_size;
 
-    if (opt_len != CILEN_DEFLATE || options[0] != CI_DEFLATE
+    if (opt_len != CILEN_DEFLATE
+	|| (options[0] != CI_DEFLATE && options[0] != CI_DEFLATE_DRAFT)
 	|| options[1] != CILEN_DEFLATE
 	|| DEFLATE_METHOD(options[2]) != DEFLATE_METHOD_VAL
 	|| options[3] != DEFLATE_CHK_SEQUENCE)
@@ -148,7 +167,7 @@ z_comp_alloc(options, opt_len)
     state->strm.zalloc = zalloc;
     state->strm.zfree = zfree;
     if (deflateInit2(&state->strm, Z_DEFAULT_COMPRESSION, DEFLATE_METHOD_VAL,
-		     -w_size, 8, Z_DEFAULT_STRATEGY, DEFLATE_OVHD+2) != Z_OK) {
+		     -w_size, 8, Z_DEFAULT_STRATEGY) != Z_OK) {
 	FREE(state, M_DEVBUF);
 	return NULL;
     }
@@ -176,7 +195,8 @@ z_comp_init(arg, options, opt_len, unit, hdrlen, debug)
 {
     struct deflate_state *state = (struct deflate_state *) arg;
 
-    if (opt_len < CILEN_DEFLATE || options[0] != CI_DEFLATE
+    if (opt_len < CILEN_DEFLATE
+	|| (options[0] != CI_DEFLATE && options[0] != CI_DEFLATE_DRAFT)
 	|| options[1] != CILEN_DEFLATE
 	|| DEFLATE_METHOD(options[2]) != DEFLATE_METHOD_VAL
 	|| DEFLATE_SIZE(options[2]) != state->w_size
@@ -361,7 +381,8 @@ z_decomp_alloc(options, opt_len)
     struct deflate_state *state;
     int w_size;
 
-    if (opt_len != CILEN_DEFLATE || options[0] != CI_DEFLATE
+    if (opt_len != CILEN_DEFLATE
+	|| (options[0] != CI_DEFLATE && options[0] != CI_DEFLATE_DRAFT)
 	|| options[1] != CILEN_DEFLATE
 	|| DEFLATE_METHOD(options[2]) != DEFLATE_METHOD_VAL
 	|| options[3] != DEFLATE_CHK_SEQUENCE)
@@ -406,7 +427,8 @@ z_decomp_init(arg, options, opt_len, unit, hdrlen, mru, debug)
 {
     struct deflate_state *state = (struct deflate_state *) arg;
 
-    if (opt_len < CILEN_DEFLATE || options[0] != CI_DEFLATE
+    if (opt_len < CILEN_DEFLATE
+	|| (options[0] != CI_DEFLATE && options[0] != CI_DEFLATE_DRAFT)
 	|| options[1] != CILEN_DEFLATE
 	|| DEFLATE_METHOD(options[2]) != DEFLATE_METHOD_VAL
 	|| DEFLATE_SIZE(options[2]) != state->w_size
@@ -531,7 +553,9 @@ 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: ""));
 	    m_freem(mo_head);
@@ -578,6 +602,11 @@ z_decompress(arg, mi, mop)
 	return DECOMP_ERROR;
     }
     olen += (mo->m_len = 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++;
@@ -627,10 +656,11 @@ 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->m_next;