diff options
Diffstat (limited to 'packet-isis-clv.c')
| -rw-r--r-- | packet-isis-clv.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/packet-isis-clv.c b/packet-isis-clv.c index 612abd962b..ded0558ddc 100644 --- a/packet-isis-clv.c +++ b/packet-isis-clv.c @@ -1,7 +1,7 @@ /* packet-isis-clv.c * Common CLV decode routines. * - * $Id: packet-isis-clv.c,v 1.25 2003/04/02 08:36:42 guy Exp $ + * $Id: packet-isis-clv.c,v 1.26 2003/05/24 19:51:48 gerald Exp $ * Stuart Stanley <stuarts@mxmail.net> * * Ethereal - Network traffic analyzer @@ -145,14 +145,15 @@ isis_dissect_area_address_clv(tvbuff_t *tvb, proto_tree *tree, int offset, * Output: * void, but we will add to proto tree if !NULL. */ +#define SBUF_LEN 300 /* 255 + header info area */ void isis_dissect_authentication_clv(tvbuff_t *tvb, proto_tree *tree, int offset, int length, char *meaning) { guchar pw_type; - char sbuf[300]; /* 255 + header info area */ + char sbuf[SBUF_LEN]; char *s = sbuf; - int auth_unsupported; + int auth_unsupported, ret; if ( length <= 0 ) { return; @@ -165,11 +166,11 @@ isis_dissect_authentication_clv(tvbuff_t *tvb, proto_tree *tree, int offset, switch (pw_type) { case 1: - s += sprintf ( s, "clear text (1), password (length %d) = ", length ); + ret = sprintf ( s, "clear text (1), password (length %d) = ", length ); + s += ret; if ( length > 0 ) { - strncpy(s, tvb_get_ptr(tvb, offset, length), length); - s[length] = 0; + strncpy(s, tvb_get_ptr(tvb, offset, length), MIN(length, SBUF_LEN - ret)); } else { strcat(s, "no clear-text password found!!!" ); } @@ -192,11 +193,12 @@ isis_dissect_authentication_clv(tvbuff_t *tvb, proto_tree *tree, int offset, } break; default: - s += sprintf ( s, "type 0x%02x (0x%02x): ", pw_type, length ); + sprintf (sbuf, "type 0x%02x (0x%02x): ", pw_type, length ); auth_unsupported=TRUE; break; } + sbuf[SBUF_LEN] = '\0'; proto_tree_add_text ( tree, tvb, offset - 1, length + 1, "%s %s", meaning, sbuf ); |