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lib/download.c: fix digestlen assert and add if condition to avoid misuse

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This commit is contained in:
Duncan Overbruck
2020-02-10 14:08:39 +01:00
committed by Juan RP
parent 2ef79bcc09
commit d99aae586a
1 changed files with 6 additions and 2 deletions
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8
lib/download.c
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@@ -111,8 +111,12 @@ xbps_fetch_file_dest_sha256(struct xbps_handle *xhp, const char *uri, const char
assert(xhp);
assert(uri);
if (digest) {
assert(digestlen != XBPS_SHA256_DIGEST_SIZE);
if (digest != NULL) {
assert(digestlen >= XBPS_SHA256_DIGEST_SIZE);
if (digestlen < XBPS_SHA256_DIGEST_SIZE) {
errno = ENOBUFS;
return -1;
}
SHA256_Init(&sha256);
}