X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;f=pppdump%2Fpppdump.c;h=b85a86271edacafcbae3f7329bce4e08bf5b0b94;hb=a75fb7b198eed50d769c80c36629f38346882cbf;hp=130300a17d348046dbc4a81100f8fbfcf3d9f0a5;hpb=2ae35d6c067d198c5e0bb4ac2d480271f3de3540;p=ppp.git

diff --git a/pppdump/pppdump.c b/pppdump/pppdump.c
index 130300a..b85a862 100644
--- a/pppdump/pppdump.c
+++ b/pppdump/pppdump.c
@@ -38,7 +38,7 @@
 #include <stdlib.h>
 #include <time.h>
 #include <sys/types.h>
-#include "ppp_defs.h"
+
 #include "ppp-comp.h"
 
 int hexmode;
@@ -233,6 +233,7 @@ static u_short fcstab[256] = {
 	0xf78f,	0xe606,	0xd49d,	0xc514,	0xb1ab,	0xa022,	0x92b9,	0x8330,
 	0x7bc7,	0x6a4e,	0x58d5,	0x495c,	0x3de3,	0x2c6a,	0x1ef1,	0x0f78
 };
+#define PPP_FCS(fcs, c)	(((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
 
 struct pkt {
     int	cnt;
@@ -296,6 +297,10 @@ dumpppp(f)
 			    printf("%s aborted packet:\n     ", dir);
 			    q = "    ";
 			}
+			if (pkt->cnt >= sizeof(pkt->buf)) {
+			    printf("%s over-long packet truncated:\n     ", dir);
+			    q = "    ";
+			}
 			nb = pkt->cnt;
 			p = pkt->buf;
 			pkt->cnt = 0;
@@ -399,7 +404,8 @@ dumpppp(f)
 			c ^= 0x20;
 			pkt->esc = 0;
 		    }
-		    pkt->buf[pkt->cnt++] = c;
+		    if (pkt->cnt < sizeof(pkt->buf))
+			pkt->buf[pkt->cnt++] = c;
 		    break;
 		}
 	    }