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Move code to check for zero digests into util.c

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svn:r5468
This commit is contained in:
Nick Mathewson 2005-11-30 02:47:59 +00:00
parent 447a3a7ff2
commit 6b49a93bd5
2 changed files with 10 additions and 0 deletions
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9
src/common/util.c
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@ -417,6 +417,15 @@ find_whitespace(const char *s)
return s;
}
/** Return true iff the DIGEST_LEN bytes in digest are all zero. */
int
tor_digest_is_zero(const char *digest)
{
static char ZERO_DIGEST[] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
return !memcmp(digest, ZERO_DIGEST, DIGEST_LEN);
}
#define CHECK_STRTOX_RESULT() \
/* Was at least one character converted? */ \
if (endptr == s) \

1
src/common/util.h
View File

@ -111,6 +111,7 @@ const char *hex_str(const char *from, size_t fromlen);
const char *eat_whitespace(const char *s);
const char *eat_whitespace_no_nl(const char *s);
const char *find_whitespace(const char *s);
int tor_digest_is_zero(const char *digest);
void base16_encode(char *dest, size_t destlen, const char *src, size_t srclen);
int base16_decode(char *dest, size_t destlen, const char *src, size_t srclen);