| 1 | #ifndef BANNED_H |
| 2 | #define BANNED_H |
| 3 | |
| 4 | /* |
| 5 | * This header lists functions that have been banned from our code base, |
| 6 | * because they're too easy to misuse (and even if used correctly, |
| 7 | * complicate audits). Including this header turns them into compile-time |
| 8 | * errors. |
| 9 | */ |
| 10 | |
| 11 | #define BANNED(func) sorry_##func##_is_a_banned_function |
| 12 | |
| 13 | #undef strcpy |
| 14 | #define strcpy(x,y) BANNED(strcpy) |
| 15 | #undef strcat |
| 16 | #define strcat(x,y) BANNED(strcat) |
| 17 | #undef strncpy |
| 18 | #define strncpy(x,y,n) BANNED(strncpy) |
| 19 | #undef strncat |
| 20 | #define strncat(x,y,n) BANNED(strncat) |
| 21 | |
| 22 | #undef sprintf |
| 23 | #undef vsprintf |
| 24 | #ifdef HAVE_VARIADIC_MACROS |
| 25 | #define sprintf(...) BANNED(sprintf) |
| 26 | #define vsprintf(...) BANNED(vsprintf) |
| 27 | #else |
| 28 | #define sprintf(buf,fmt,arg) BANNED(sprintf) |
| 29 | #define vsprintf(buf,fmt,arg) BANNED(vsprintf) |
| 30 | #endif |
| 31 | |
| 32 | #endif /* BANNED_H */ |