| /* | |
| * gd_security.c | |
| * | |
| * Implements buffer overflow check routines. | |
| * | |
| * Written 2004, Phil Knirsch. | |
| * Based on netpbm fixes by Alan Cox. | |
| * | |
| */ | |
| int overflow2(int a, int b) | |
| { | |
| if(a <= 0 || b <= 0) { | |
| gd_error("One parameter to a memory allocation multiplication is negative or zero, failing operation gracefully\n"); | |
| return 1; | |
| } | |
| if(a > INT_MAX / b) { | |
| gd_error("Product of memory allocation multiplication would exceed INT_MAX, failing operation gracefully\n"); | |
| return 1; | |
| } | |
| return 0; | |
| } | |