1  // Copyright (c) 2009-2010 Satoshi Nakamoto
  2  // Copyright (c) 2009-2020 The Bitcoin Core developers
  3  // Distributed under the MIT software license, see the accompanying
  4  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  5  
  6  #include <script/script_error.h>
  7  
  8  #include <string>
  9  
 10  std::string ScriptErrorString(const ScriptError serror)
 11  {
 12      switch (serror)
 13      {
 14          case SCRIPT_ERR_OK:
 15              return "No error";
 16          case SCRIPT_ERR_EVAL_FALSE:
 17              return "Script evaluated without error but finished with a false/empty top stack element";
 18          case SCRIPT_ERR_VERIFY:
 19              return "Script failed an OP_VERIFY operation";
 20          case SCRIPT_ERR_EQUALVERIFY:
 21              return "Script failed an OP_EQUALVERIFY operation";
 22          case SCRIPT_ERR_CHECKMULTISIGVERIFY:
 23              return "Script failed an OP_CHECKMULTISIGVERIFY operation";
 24          case SCRIPT_ERR_CHECKSIGVERIFY:
 25              return "Script failed an OP_CHECKSIGVERIFY operation";
 26          case SCRIPT_ERR_NUMEQUALVERIFY:
 27              return "Script failed an OP_NUMEQUALVERIFY operation";
 28          case SCRIPT_ERR_SCRIPT_SIZE:
 29              return "Script is too big";
 30          case SCRIPT_ERR_PUSH_SIZE:
 31              return "Push value size limit exceeded";
 32          case SCRIPT_ERR_OP_COUNT:
 33              return "Operation limit exceeded";
 34          case SCRIPT_ERR_STACK_SIZE:
 35              return "Stack size limit exceeded";
 36          case SCRIPT_ERR_SIG_COUNT:
 37              return "Signature count negative or greater than pubkey count";
 38          case SCRIPT_ERR_PUBKEY_COUNT:
 39              return "Pubkey count negative or limit exceeded";
 40          case SCRIPT_ERR_BAD_OPCODE:
 41              return "Opcode missing or not understood";
 42          case SCRIPT_ERR_DISABLED_OPCODE:
 43              return "Attempted to use a disabled opcode";
 44          case SCRIPT_ERR_INVALID_STACK_OPERATION:
 45              return "Operation not valid with the current stack size";
 46          case SCRIPT_ERR_INVALID_ALTSTACK_OPERATION:
 47              return "Operation not valid with the current altstack size";
 48          case SCRIPT_ERR_OP_RETURN:
 49              return "OP_RETURN was encountered";
 50          case SCRIPT_ERR_UNBALANCED_CONDITIONAL:
 51              return "Invalid OP_IF construction";
 52          case SCRIPT_ERR_NEGATIVE_LOCKTIME:
 53              return "Negative locktime";
 54          case SCRIPT_ERR_UNSATISFIED_LOCKTIME:
 55              return "Locktime requirement not satisfied";
 56          case SCRIPT_ERR_SIG_HASHTYPE:
 57              return "Signature hash type missing or not understood";
 58          case SCRIPT_ERR_SIG_DER:
 59              return "Non-canonical DER signature";
 60          case SCRIPT_ERR_MINIMALDATA:
 61              return "Data push larger than necessary";
 62          case SCRIPT_ERR_SIG_PUSHONLY:
 63              return "Only push operators allowed in signatures";
 64          case SCRIPT_ERR_SIG_HIGH_S:
 65              return "Non-canonical signature: S value is unnecessarily high";
 66          case SCRIPT_ERR_SIG_NULLDUMMY:
 67              return "Dummy CHECKMULTISIG argument must be zero";
 68          case SCRIPT_ERR_MINIMALIF:
 69              return "OP_IF/NOTIF argument must be minimal";
 70          case SCRIPT_ERR_SIG_NULLFAIL:
 71              return "Signature must be zero for failed CHECK(MULTI)SIG operation";
 72          case SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS:
 73              return "NOPx reserved for soft-fork upgrades";
 74          case SCRIPT_ERR_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM:
 75              return "Witness version reserved for soft-fork upgrades";
 76          case SCRIPT_ERR_DISCOURAGE_UPGRADABLE_TAPROOT_VERSION:
 77              return "Taproot version reserved for soft-fork upgrades";
 78          case SCRIPT_ERR_DISCOURAGE_OP_SUCCESS:
 79              return "OP_SUCCESSx reserved for soft-fork upgrades";
 80          case SCRIPT_ERR_DISCOURAGE_UPGRADABLE_PUBKEYTYPE:
 81              return "Public key version reserved for soft-fork upgrades";
 82          case SCRIPT_ERR_PUBKEYTYPE:
 83              return "Public key is neither compressed or uncompressed";
 84          case SCRIPT_ERR_CLEANSTACK:
 85              return "Stack size must be exactly one after execution";
 86          case SCRIPT_ERR_WITNESS_PROGRAM_WRONG_LENGTH:
 87              return "Witness program has incorrect length";
 88          case SCRIPT_ERR_WITNESS_PROGRAM_WITNESS_EMPTY:
 89              return "Witness program was passed an empty witness";
 90          case SCRIPT_ERR_WITNESS_PROGRAM_MISMATCH:
 91              return "Witness program hash mismatch";
 92          case SCRIPT_ERR_WITNESS_MALLEATED:
 93              return "Witness requires empty scriptSig";
 94          case SCRIPT_ERR_WITNESS_MALLEATED_P2SH:
 95              return "Witness requires only-redeemscript scriptSig";
 96          case SCRIPT_ERR_WITNESS_UNEXPECTED:
 97              return "Witness provided for non-witness script";
 98          case SCRIPT_ERR_WITNESS_PUBKEYTYPE:
 99              return "Using non-compressed keys in segwit";
100          case SCRIPT_ERR_SCHNORR_SIG_SIZE:
101              return "Invalid Schnorr signature size";
102          case SCRIPT_ERR_SCHNORR_SIG_HASHTYPE:
103              return "Invalid Schnorr signature hash type";
104          case SCRIPT_ERR_SCHNORR_SIG:
105              return "Invalid Schnorr signature";
106          case SCRIPT_ERR_TAPROOT_WRONG_CONTROL_SIZE:
107              return "Invalid Taproot control block size";
108          case SCRIPT_ERR_TAPSCRIPT_VALIDATION_WEIGHT:
109              return "Too much signature validation relative to witness weight";
110          case SCRIPT_ERR_TAPSCRIPT_CHECKMULTISIG:
111              return "OP_CHECKMULTISIG(VERIFY) is not available in tapscript";
112          case SCRIPT_ERR_TAPSCRIPT_MINIMALIF:
113              return "OP_IF/NOTIF argument must be minimal in tapscript";
114          case SCRIPT_ERR_OP_CODESEPARATOR:
115              return "Using OP_CODESEPARATOR in non-witness script";
116          case SCRIPT_ERR_SIG_FINDANDDELETE:
117              return "Signature is found in scriptCode";
118          case SCRIPT_ERR_UNKNOWN_ERROR:
119          case SCRIPT_ERR_ERROR_COUNT:
120          default: break;
121      }
122      return "unknown error";
123  }