php3_sybase_get_column_content in sybase.c (DB-Lib)
crashes with buffer overflow when converting binary columns.
The result of the IMAGE/VARBINARY to CHAR conversion is a
hex string -> needs 2 bytes for each binary byte.

The Patch below fixes this and also adds a bit more space
for DATE conversions. Also works with MS-SQLServer.

---- cut ----
*** php-3.0.6/functions/sybase.c.orig	Fri Sep 11 01:57:23 1998
--- php-3.0.6/functions/sybase.c	Tue Dec 29 15:44:08 1998
***************
*** 637,639 ****
  				char *res_buf;
! 				int res_length = dbdatlen(sybase_ptr->link,offset);
  				register char *p;
--- 637,640 ----
  				char *res_buf;
! 				int dat_length = dbdatlen(sybase_ptr->link,offset);
! 				int res_length = dat_length;
  				register char *p;
***************
*** 641,644 ****
  				switch (coltype(offset)) {
- 					case SYBBINARY:
- 					case SYBVARBINARY:
  					case SYBCHAR:
--- 642,643 ----
***************
*** 646,648 ****
--- 645,652 ----
  					case SYBTEXT:
+ 						break;
+ 					case SYBBINARY:
+ 					case SYBVARBINARY:
  					case SYBIMAGE:
+ 						/* result is hex string */
+ 						res_length = (dat_length * 2) + 4;
  						break;
***************
*** 650,652 ****
  						/* take no chances, no telling how big the result would really be */
! 						res_length += 20;
  						break;
--- 654,656 ----
  						/* take no chances, no telling how big the result would really be */
! 						res_length += 40;
  						break;
***************
*** 655,657 ****
  				res_buf = (char *) emalloc(res_length+1);
! 				dbconvert(NULL,coltype(offset),dbdata(sybase_ptr->link,offset), res_length,SYBCHAR,res_buf,-1);
  		
--- 659,661 ----
  				res_buf = (char *) emalloc(res_length+1);
! 				res_length = dbconvert(NULL,coltype(offset),dbdata(sybase_ptr->link,offset), dat_length,SYBCHAR,res_buf,-1);
  		

---- cut ----

A Happy new year!

Bernd