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emulator: Refactor strlcpy

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Performance is unimportant and this implementation makes it easier to
fuzz.
This commit is contained in:
Saleem Rashid 2018-02-14 10:48:47 +00:00 committed by Pavol Rusnak
parent e3a0b6e7b4
commit b4e3cd3e0c
1 changed files with 8 additions and 15 deletions
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23
emulator/strl.c
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@ -18,27 +18,20 @@
*/ */
#include "strl.h" #include "strl.h"
#include "util.h"
#include <string.h> #include <string.h>
size_t strlcpy(char *dst, const char *src, size_t size) { size_t strlcpy(char *dst, const char *src, size_t size) {
if (size == 0) { size_t ret = strlen(src);
return strlen(src);
if (size) {
size_t len = MIN(ret, size - 1);
memcpy(dst, src, len);
dst[len] = '\0';
} }
size_t i; return ret;
for (i = 0; i < size - 1; i++) {
dst[i] = src[i];
if (src[i] == '\0') {
return i - 1;
}
}
dst[size - 1] = '\0';
while (src[i++] != '\0');
return i - 1;
} }
size_t strlcat(char *dst, const char *src, size_t size) { size_t strlcat(char *dst, const char *src, size_t size) {