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Make obj2txt accept empty OIDs because Python depends on it.

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Change-Id: I44bc5979cb8c15ad8c4f9bef17049312b6f23a41
Reviewed-on: https://boringssl-review.googlesource.com/10200
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
This commit is contained in:
Martin Kreichgauer 2016-08-09 13:53:36 -07:00 committed by CQ bot account: commit-bot@chromium.org
parent f71d7ed014
commit 909232db55
2 changed files with 12 additions and 8 deletions
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6
crypto/obj/obj.c
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@ -455,6 +455,12 @@ static int add_decimal(CBB *out, uint64_t v) {
int OBJ_obj2txt(char *out, int out_len, const ASN1_OBJECT *obj,
int dont_return_name) {
/* Python depends on the empty OID successfully encoding as the empty
* string. */
if (obj == NULL || obj->length == 0) {
return strlcpy_int(out, "", out_len);
}
if (!dont_return_name) {
int nid = OBJ_obj2nid(obj);
if (nid != NID_undef) {

14
crypto/obj/obj_test.cc
View File

@ -95,8 +95,7 @@ static bool TestSignatureAlgorithms() {
}
static bool ExpectObj2Txt(const uint8_t *der, size_t der_len,
bool dont_return_name,
const char *expected) {
bool dont_return_name, const char *expected) {
ASN1_OBJECT obj;
memset(&obj, 0, sizeof(obj));
obj.data = der;
@ -178,18 +177,17 @@ static bool TestObj2Txt() {
!ExpectObj2Txt(kTestOID, sizeof(kTestOID), true /* don't return name */,
"1.2.840.113554.4.1.72585.0") ||
!ExpectObj2Txt(kTestOID, sizeof(kTestOID), false /* return name */,
"1.2.840.113554.4.1.72585.0")) {
"1.2.840.113554.4.1.72585.0") ||
// Python depends on the empty OID successfully encoding as the empty
// string.
!ExpectObj2Txt(nullptr, 0, false /* return name */, "") ||
!ExpectObj2Txt(nullptr, 0, true /* don't return name */, "")) {
return false;
}
ASN1_OBJECT obj;
memset(&obj, 0, sizeof(obj));
if (OBJ_obj2txt(NULL, 0, &obj, 0) != -1) {
fprintf(stderr, "OBJ_obj2txt accepted the empty OID.\n");
return false;
}
// kNonMinimalOID is kBasicConstraints with the final component non-minimally
// encoded.
static const uint8_t kNonMinimalOID[] = {