1 // Copyright 2023 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://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, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 15 #include "pw_bluetooth_sapphire/internal/host/sm/error.h" 16 17 #include <pw_assert/check.h> 18 19 #include "pw_string/format.h" 20 21 namespace bt { 22 namespace { 23 ErrorToString(sm::ErrorCode ecode)24constexpr const char* ErrorToString(sm::ErrorCode ecode) { 25 switch (ecode) { 26 case sm::ErrorCode::kPasskeyEntryFailed: 27 return "passkey entry failed"; 28 case sm::ErrorCode::kOOBNotAvailable: 29 return "OOB not available"; 30 case sm::ErrorCode::kAuthenticationRequirements: 31 return "authentication requirements"; 32 case sm::ErrorCode::kConfirmValueFailed: 33 return "confirm value failed"; 34 case sm::ErrorCode::kPairingNotSupported: 35 return "pairing not supported"; 36 case sm::ErrorCode::kEncryptionKeySize: 37 return "encryption key size"; 38 case sm::ErrorCode::kCommandNotSupported: 39 return "command not supported"; 40 case sm::ErrorCode::kUnspecifiedReason: 41 return "unspecified reason"; 42 case sm::ErrorCode::kRepeatedAttempts: 43 return "repeated attempts"; 44 case sm::ErrorCode::kInvalidParameters: 45 return "invalid parameters"; 46 case sm::ErrorCode::kDHKeyCheckFailed: 47 return "DHKey check failed"; 48 case sm::ErrorCode::kNumericComparisonFailed: 49 return "numeric comparison failed"; 50 case sm::ErrorCode::kBREDRPairingInProgress: 51 return "BR/EDR pairing in progress"; 52 case sm::ErrorCode::kCrossTransportKeyDerivationNotAllowed: 53 return "cross-transport key dist. not allowed"; 54 default: 55 break; 56 } 57 return "(unknown)"; 58 } 59 60 constexpr size_t kMaxErrorStringSize = 61 std::string_view( 62 ErrorToString(sm::ErrorCode::kCrossTransportKeyDerivationNotAllowed)) 63 .size(); 64 65 } // namespace 66 67 // static ToString(sm::ErrorCode ecode)68std::string ProtocolErrorTraits<sm::ErrorCode>::ToString(sm::ErrorCode ecode) { 69 const size_t out_size = kMaxErrorStringSize + sizeof(" (SMP 0x0e)"); 70 char out[out_size] = ""; 71 pw::StatusWithSize status = 72 pw::string::Format({out, sizeof(out)}, 73 "%s (SMP %#.2x)", 74 ErrorToString(ecode), 75 static_cast<unsigned int>(ecode)); 76 PW_DCHECK(status.ok()); 77 return out; 78 } 79 80 } // namespace bt 81