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NetworkPkg/IScsiDxe: assert that IScsiBinToHex() always succeeds 

IScsiBinToHex() is called for encoding:

- the answer to the target's challenge; that is, CHAP_R;

- the challenge for the target, in case mutual authentication is enabled;
  that is, CHAP_C.

The initiator controls the size of both blobs, the sizes of their hex
encodings are correctly calculated in "RspLen" and "ChallengeLen".
Therefore the IScsiBinToHex() calls never fail; assert that.

Cc: Jiaxin Wu <jiaxin.wu@intel.com>
Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Cc: Siyuan Fu <siyuan.fu@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3356
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Maciej Rabeda <maciej.rabeda@linux.intel.com>
Message-Id: <20210608121259.32451-7-lersek@redhat.com>
This commit is contained in:
Laszlo Ersek 2021-06-08 14:12:55 +02:00 committed by mergify[bot]
parent cf01b2dc8f
commit d90fff40cb
1 changed files with 15 additions and 12 deletions
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7
NetworkPkg/IScsiDxe/IScsiCHAP.c
View File

@ -391,6 +391,7 @@ IScsiCHAPToSendReq (
UINT32 RspLen;
CHAR8 *Challenge;
UINT32 ChallengeLen;
EFI_STATUS BinToHexStatus;
ASSERT (Conn->CurrentStage == ISCSI_SECURITY_NEGOTIATION);
@ -471,12 +472,13 @@ IScsiCHAPToSendReq (
//
// CHAP_R=<R>
//
IScsiBinToHex (
BinToHexStatus = IScsiBinToHex (
(UINT8 *) AuthData->CHAPResponse,
ISCSI_CHAP_RSP_LEN,
Response,
&RspLen
);
ASSERT_EFI_ERROR (BinToHexStatus);
IScsiAddKeyValuePair (Pdu, ISCSI_KEY_CHAP_RESPONSE, Response);
if (AuthData->AuthConfig->CHAPType == ISCSI_CHAP_MUTUAL) {
@ -490,12 +492,13 @@ IScsiCHAPToSendReq (
// CHAP_C=<C>
//
IScsiGenRandom ((UINT8 *) AuthData->OutChallenge, ISCSI_CHAP_RSP_LEN);
IScsiBinToHex (
BinToHexStatus = IScsiBinToHex (
(UINT8 *) AuthData->OutChallenge,
ISCSI_CHAP_RSP_LEN,
Challenge,
&ChallengeLen
);
ASSERT_EFI_ERROR (BinToHexStatus);
IScsiAddKeyValuePair (Pdu, ISCSI_KEY_CHAP_CHALLENGE, Challenge);
Conn->AuthStep = ISCSI_CHAP_STEP_FOUR;