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_string/format.h" 18 19 namespace bt { 20 namespace { 21 ErrorToString(sm::ErrorCode ecode)22constexpr const char* ErrorToString(sm::ErrorCode ecode) { 23 switch (ecode) { 24 case sm::ErrorCode::kPasskeyEntryFailed: 25 return "passkey entry failed"; 26 case sm::ErrorCode::kOOBNotAvailable: 27 return "OOB not available"; 28 case sm::ErrorCode::kAuthenticationRequirements: 29 return "authentication requirements"; 30 case sm::ErrorCode::kConfirmValueFailed: 31 return "confirm value failed"; 32 case sm::ErrorCode::kPairingNotSupported: 33 return "pairing not supported"; 34 case sm::ErrorCode::kEncryptionKeySize: 35 return "encryption key size"; 36 case sm::ErrorCode::kCommandNotSupported: 37 return "command not supported"; 38 case sm::ErrorCode::kUnspecifiedReason: 39 return "unspecified reason"; 40 case sm::ErrorCode::kRepeatedAttempts: 41 return "repeated attempts"; 42 case sm::ErrorCode::kInvalidParameters: 43 return "invalid parameters"; 44 case sm::ErrorCode::kDHKeyCheckFailed: 45 return "DHKey check failed"; 46 case sm::ErrorCode::kNumericComparisonFailed: 47 return "numeric comparison failed"; 48 case sm::ErrorCode::kBREDRPairingInProgress: 49 return "BR/EDR pairing in progress"; 50 case sm::ErrorCode::kCrossTransportKeyDerivationNotAllowed: 51 return "cross-transport key dist. not allowed"; 52 default: 53 break; 54 } 55 return "(unknown)"; 56 } 57 58 constexpr size_t kMaxErrorStringSize = 59 std::string_view( 60 ErrorToString(sm::ErrorCode::kCrossTransportKeyDerivationNotAllowed)) 61 .size(); 62 63 } // namespace 64 65 // static ToString(sm::ErrorCode ecode)66std::string ProtocolErrorTraits<sm::ErrorCode>::ToString(sm::ErrorCode ecode) { 67 const size_t out_size = kMaxErrorStringSize + sizeof(" (SMP 0x0e)"); 68 char out[out_size] = ""; 69 pw::StatusWithSize status = 70 pw::string::Format({out, sizeof(out)}, 71 "%s (SMP %#.2x)", 72 ErrorToString(ecode), 73 static_cast<unsigned int>(ecode)); 74 PW_DCHECK(status.ok()); 75 return out; 76 } 77 78 } // namespace bt 79