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Security review: check results of snprintf.

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Calls marked with xSnprintf shouldn't fail.
Abort program cleanly if any of them does.
This commit is contained in:
Hisham Muhammad
2017-07-27 16:07:50 -03:00
parent 3975e9ce5c
commit 09e241fb12
25 changed files with 125 additions and 120 deletions
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3
XAlloc.h
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@ -7,6 +7,7 @@
#define _GNU_SOURCE
#endif
#include <err.h>
#include <assert.h>
#include <stdlib.h>
@ -16,6 +17,8 @@ void* xCalloc(size_t nmemb, size_t size);
void* xRealloc(void* ptr, size_t size);
#define xSnprintf(fmt, len, ...) do { int _l=len; int _n=snprintf(fmt, _l, __VA_ARGS__); if (!(_n > -1 && _n < _l)) { curs_set(1); endwin(); err(1, NULL); } } while(0)
#undef xStrdup
#undef xStrdup_
#ifdef NDEBUG