Alice Wang | 45d98fa | 2023-01-11 09:39:45 +0000 | [diff] [blame^] | 1 | // Copyright 2022, The Android Open Source Project |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | //! This module contains the error thrown by the payload verification API. |
| 16 | |
| 17 | use avb_bindgen::AvbSlotVerifyResult; |
| 18 | |
| 19 | use core::fmt; |
| 20 | |
| 21 | /// This error is the error part of `AvbSlotVerifyResult`. |
| 22 | /// It is the error thrown by the payload verification API `verify_payload()`. |
| 23 | #[derive(Clone, Debug, PartialEq, Eq)] |
| 24 | pub enum AvbSlotVerifyError { |
| 25 | /// AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_ARGUMENT |
| 26 | InvalidArgument, |
| 27 | /// AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_METADATA |
| 28 | InvalidMetadata, |
| 29 | /// AVB_SLOT_VERIFY_RESULT_ERROR_IO |
| 30 | Io, |
| 31 | /// AVB_SLOT_VERIFY_RESULT_ERROR_OOM |
| 32 | Oom, |
| 33 | /// AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED |
| 34 | PublicKeyRejected, |
| 35 | /// AVB_SLOT_VERIFY_RESULT_ERROR_ROLLBACK_INDEX |
| 36 | RollbackIndex, |
| 37 | /// AVB_SLOT_VERIFY_RESULT_ERROR_UNSUPPORTED_VERSION |
| 38 | UnsupportedVersion, |
| 39 | /// AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION |
| 40 | Verification, |
| 41 | } |
| 42 | |
| 43 | impl fmt::Display for AvbSlotVerifyError { |
| 44 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| 45 | match self { |
| 46 | Self::InvalidArgument => write!(f, "Invalid parameters."), |
| 47 | Self::InvalidMetadata => write!(f, "Invalid metadata."), |
| 48 | Self::Io => write!(f, "I/O error while trying to load data or get a rollback index."), |
| 49 | Self::Oom => write!(f, "Unable to allocate memory."), |
| 50 | Self::PublicKeyRejected => write!(f, "Public key rejected or data not signed."), |
| 51 | Self::RollbackIndex => write!(f, "Rollback index is less than its stored value."), |
| 52 | Self::UnsupportedVersion => write!( |
| 53 | f, |
| 54 | "Some of the metadata requires a newer version of libavb than what is in use." |
| 55 | ), |
| 56 | Self::Verification => write!(f, "Data does not verify."), |
| 57 | } |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | pub(crate) fn slot_verify_result_to_verify_payload_result( |
| 62 | result: AvbSlotVerifyResult, |
| 63 | ) -> Result<(), AvbSlotVerifyError> { |
| 64 | match result { |
| 65 | AvbSlotVerifyResult::AVB_SLOT_VERIFY_RESULT_OK => Ok(()), |
| 66 | AvbSlotVerifyResult::AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_ARGUMENT => { |
| 67 | Err(AvbSlotVerifyError::InvalidArgument) |
| 68 | } |
| 69 | AvbSlotVerifyResult::AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_METADATA => { |
| 70 | Err(AvbSlotVerifyError::InvalidMetadata) |
| 71 | } |
| 72 | AvbSlotVerifyResult::AVB_SLOT_VERIFY_RESULT_ERROR_IO => Err(AvbSlotVerifyError::Io), |
| 73 | AvbSlotVerifyResult::AVB_SLOT_VERIFY_RESULT_ERROR_OOM => Err(AvbSlotVerifyError::Oom), |
| 74 | AvbSlotVerifyResult::AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED => { |
| 75 | Err(AvbSlotVerifyError::PublicKeyRejected) |
| 76 | } |
| 77 | AvbSlotVerifyResult::AVB_SLOT_VERIFY_RESULT_ERROR_ROLLBACK_INDEX => { |
| 78 | Err(AvbSlotVerifyError::RollbackIndex) |
| 79 | } |
| 80 | AvbSlotVerifyResult::AVB_SLOT_VERIFY_RESULT_ERROR_UNSUPPORTED_VERSION => { |
| 81 | Err(AvbSlotVerifyError::UnsupportedVersion) |
| 82 | } |
| 83 | AvbSlotVerifyResult::AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION => { |
| 84 | Err(AvbSlotVerifyError::Verification) |
| 85 | } |
| 86 | } |
| 87 | } |