{ "contractName": "DNSSECImpl", "abi": [ { "inputs": [ { "internalType": "bytes", "name": "_anchors", "type": "bytes" } ], "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": false, "internalType": "uint8", "name": "id", "type": "uint8" }, { "indexed": false, "internalType": "address", "name": "addr", "type": "address" } ], "name": "AlgorithmUpdated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": false, "internalType": "uint8", "name": "id", "type": "uint8" }, { "indexed": false, "internalType": "address", "name": "addr", "type": "address" } ], "name": "DigestUpdated", "type": "event" }, { "anonymous": false, "inputs": [], "name": "Marker", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": false, "internalType": "uint8", "name": "id", "type": "uint8" }, { "indexed": false, "internalType": "address", "name": "addr", "type": "address" } ], "name": "NSEC3DigestUpdated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": false, "internalType": "bytes", "name": "name", "type": "bytes" }, { "indexed": false, "internalType": "bytes", "name": "rrset", "type": "bytes" } ], "name": "RRSetUpdated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": false, "internalType": "uint256", "name": "t", "type": "uint256" } ], "name": "Test", "type": "event" }, { "inputs": [ { "internalType": "uint8", "name": "", "type": "uint8" } ], "name": "algorithms", "outputs": [ { "internalType": "contract Algorithm", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "anchors", "outputs": [ { "internalType": "bytes", "name": "", "type": "bytes" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "uint8", "name": "", "type": "uint8" } ], "name": "digests", "outputs": [ { "internalType": "contract Digest", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "uint8", "name": "", "type": "uint8" } ], "name": "nsec3Digests", "outputs": [ { "internalType": "contract NSEC3Digest", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "owner", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "setOwner", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "uint8", "name": "id", "type": "uint8" }, { "internalType": "contract Algorithm", "name": "algo", "type": "address" } ], "name": "setAlgorithm", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "uint8", "name": "id", "type": "uint8" }, { "internalType": "contract Digest", "name": "digest", "type": "address" } ], "name": "setDigest", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "uint8", "name": "id", "type": "uint8" }, { "internalType": "contract NSEC3Digest", "name": "digest", "type": "address" } ], "name": "setNSEC3Digest", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "bytes", "name": "data", "type": "bytes" }, { "internalType": "bytes", "name": "_proof", "type": "bytes" } ], "name": "submitRRSets", "outputs": [ { "internalType": "bytes", "name": "", "type": "bytes" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "components": [ { "internalType": "bytes", "name": "rrset", "type": "bytes" }, { "internalType": "bytes", "name": "sig", "type": "bytes" } ], "internalType": "struct DNSSEC.RRSetWithSignature", "name": "input", "type": "tuple" }, { "internalType": "bytes", "name": "proof", "type": "bytes" } ], "name": "submitRRSet", "outputs": [ { "internalType": "bytes", "name": "", "type": "bytes" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "uint16", "name": "deleteType", "type": "uint16" }, { "internalType": "bytes", "name": "deleteName", "type": "bytes" }, { "components": [ { "internalType": "bytes", "name": "rrset", "type": "bytes" }, { "internalType": "bytes", "name": "sig", "type": "bytes" } ], "internalType": "struct DNSSEC.RRSetWithSignature", "name": "nsec", "type": "tuple" }, { "internalType": "bytes", "name": "proof", "type": "bytes" } ], "name": "deleteRRSet", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "uint16", "name": "deleteType", "type": "uint16" }, { "internalType": "bytes", "name": "deleteName", "type": "bytes" }, { "components": [ { "internalType": "bytes", "name": "rrset", "type": "bytes" }, { "internalType": "bytes", "name": "sig", "type": "bytes" } ], "internalType": "struct DNSSEC.RRSetWithSignature", "name": "closestEncloser", "type": "tuple" }, { "components": [ { "internalType": "bytes", "name": "rrset", "type": "bytes" }, { "internalType": "bytes", "name": "sig", "type": "bytes" } ], "internalType": "struct DNSSEC.RRSetWithSignature", "name": "nextClosest", "type": "tuple" }, { "internalType": "bytes", "name": "dnskey", "type": "bytes" } ], "name": "deleteRRSetNSEC3", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "uint16", "name": "dnstype", "type": "uint16" }, { "internalType": "bytes", "name": "name", "type": "bytes" } ], "name": "rrdata", "outputs": [ { "internalType": "uint32", "name": "", "type": "uint32" }, { "internalType": "uint64", "name": "", "type": "uint64" }, { "internalType": "bytes20", "name": "", "type": "bytes20" } ], "stateMutability": "view", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.7.4+commit.3f05b770\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"bytes\",\"name\":\"_anchors\",\"type\":\"bytes\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"id\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"addr\",\"type\":\"address\"}],\"name\":\"AlgorithmUpdated\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"id\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"addr\",\"type\":\"address\"}],\"name\":\"DigestUpdated\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[],\"name\":\"Marker\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"id\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"addr\",\"type\":\"address\"}],\"name\":\"NSEC3DigestUpdated\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"bytes\",\"name\":\"name\",\"type\":\"bytes\"},{\"indexed\":false,\"internalType\":\"bytes\",\"name\":\"rrset\",\"type\":\"bytes\"}],\"name\":\"RRSetUpdated\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"t\",\"type\":\"uint256\"}],\"name\":\"Test\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"uint8\",\"name\":\"\",\"type\":\"uint8\"}],\"name\":\"algorithms\",\"outputs\":[{\"internalType\":\"contract Algorithm\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"anchors\",\"outputs\":[{\"internalType\":\"bytes\",\"name\":\"\",\"type\":\"bytes\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint16\",\"name\":\"deleteType\",\"type\":\"uint16\"},{\"internalType\":\"bytes\",\"name\":\"deleteName\",\"type\":\"bytes\"},{\"components\":[{\"internalType\":\"bytes\",\"name\":\"rrset\",\"type\":\"bytes\"},{\"internalType\":\"bytes\",\"name\":\"sig\",\"type\":\"bytes\"}],\"internalType\":\"struct DNSSEC.RRSetWithSignature\",\"name\":\"nsec\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"proof\",\"type\":\"bytes\"}],\"name\":\"deleteRRSet\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint16\",\"name\":\"deleteType\",\"type\":\"uint16\"},{\"internalType\":\"bytes\",\"name\":\"deleteName\",\"type\":\"bytes\"},{\"components\":[{\"internalType\":\"bytes\",\"name\":\"rrset\",\"type\":\"bytes\"},{\"internalType\":\"bytes\",\"name\":\"sig\",\"type\":\"bytes\"}],\"internalType\":\"struct DNSSEC.RRSetWithSignature\",\"name\":\"closestEncloser\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes\",\"name\":\"rrset\",\"type\":\"bytes\"},{\"internalType\":\"bytes\",\"name\":\"sig\",\"type\":\"bytes\"}],\"internalType\":\"struct DNSSEC.RRSetWithSignature\",\"name\":\"nextClosest\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"dnskey\",\"type\":\"bytes\"}],\"name\":\"deleteRRSetNSEC3\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint8\",\"name\":\"\",\"type\":\"uint8\"}],\"name\":\"digests\",\"outputs\":[{\"internalType\":\"contract Digest\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint8\",\"name\":\"\",\"type\":\"uint8\"}],\"name\":\"nsec3Digests\",\"outputs\":[{\"internalType\":\"contract NSEC3Digest\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint16\",\"name\":\"dnstype\",\"type\":\"uint16\"},{\"internalType\":\"bytes\",\"name\":\"name\",\"type\":\"bytes\"}],\"name\":\"rrdata\",\"outputs\":[{\"internalType\":\"uint32\",\"name\":\"\",\"type\":\"uint32\"},{\"internalType\":\"uint64\",\"name\":\"\",\"type\":\"uint64\"},{\"internalType\":\"bytes20\",\"name\":\"\",\"type\":\"bytes20\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint8\",\"name\":\"id\",\"type\":\"uint8\"},{\"internalType\":\"contract Algorithm\",\"name\":\"algo\",\"type\":\"address\"}],\"name\":\"setAlgorithm\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint8\",\"name\":\"id\",\"type\":\"uint8\"},{\"internalType\":\"contract Digest\",\"name\":\"digest\",\"type\":\"address\"}],\"name\":\"setDigest\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint8\",\"name\":\"id\",\"type\":\"uint8\"},{\"internalType\":\"contract NSEC3Digest\",\"name\":\"digest\",\"type\":\"address\"}],\"name\":\"setNSEC3Digest\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"setOwner\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"bytes\",\"name\":\"rrset\",\"type\":\"bytes\"},{\"internalType\":\"bytes\",\"name\":\"sig\",\"type\":\"bytes\"}],\"internalType\":\"struct DNSSEC.RRSetWithSignature\",\"name\":\"input\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"proof\",\"type\":\"bytes\"}],\"name\":\"submitRRSet\",\"outputs\":[{\"internalType\":\"bytes\",\"name\":\"\",\"type\":\"bytes\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"},{\"internalType\":\"bytes\",\"name\":\"_proof\",\"type\":\"bytes\"}],\"name\":\"submitRRSets\",\"outputs\":[{\"internalType\":\"bytes\",\"name\":\"\",\"type\":\"bytes\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"kind\":\"dev\",\"methods\":{\"constructor\":{\"details\":\"Constructor.\",\"params\":{\"_anchors\":\"The binary format RR entries for the root DS records.\"}},\"deleteRRSet(uint16,bytes,(bytes,bytes),bytes)\":{\"details\":\"Deletes an RR from the oracle.\",\"params\":{\"deleteName\":\"which you want to delete\",\"deleteType\":\"The DNS record type to delete.\",\"nsec\":\"The signed NSEC RRset. This is in the format described in section 5.3.2 of RFC4035: The RRDATA section from the RRSIG without the signature data, followed by a series of canonicalised RR records that the signature applies to.\"}},\"deleteRRSetNSEC3(uint16,bytes,(bytes,bytes),(bytes,bytes),bytes)\":{\"details\":\"Deletes an RR from the oracle using an NSEC3 proof. Deleting a record using NSEC3 requires using up to two NSEC3 records. There are two cases: 1. The name exists, but the record type doesn't. Eg, example.com has A records but no TXT records. 2. The name does not exist, but a parent name does. In the first case, we submit one NSEC3 proof in `closestEncloser` that matches the target name but does not have the bit for `deleteType` set in its type bitmap. In the second case, we submit two proofs: closestEncloser and nextClosest, that together prove that the name does not exist. NSEC3 records are in the format described in section 5.3.2 of RFC4035: The RRDATA section from the RRSIG without the signature data, followed by a series of canonicalised RR records that the signature applies to.\",\"params\":{\"closestEncloser\":\"An NSEC3 proof matching the closest enclosing name - that is, the nearest ancestor of the target name that *does* exist.\",\"deleteName\":\"The name to delete.\",\"deleteType\":\"The DNS record type to delete.\",\"dnskey\":\"An encoded DNSKEY record that has already been submitted to the oracle and can be used to verify the signatures closestEncloserSig and nextClosestSig\",\"nextClosest\":\"An NSEC3 proof covering the next closest name. This proves that the immediate subdomain of the closestEncloser does not exist.\"}},\"rrdata(uint16,bytes)\":{\"details\":\"Returns data about the RRs (if any) known to this oracle with the provided type and name.\",\"params\":{\"dnstype\":\"The DNS record type to query.\",\"name\":\"The name to query, in DNS label-sequence format.\"},\"returns\":{\"_0\":\"inception The unix timestamp at which the signature for this RRSET was created.\",\"_1\":\"inserted The unix timestamp at which this RRSET was inserted into the oracle.\",\"_2\":\"hash The hash of the RRset that was inserted.\"}},\"setAlgorithm(uint8,address)\":{\"details\":\"Sets the contract address for a signature verification algorithm. Callable only by the owner.\",\"params\":{\"algo\":\"The address of the algorithm contract.\",\"id\":\"The algorithm ID\"}},\"setDigest(uint8,address)\":{\"details\":\"Sets the contract address for a digest verification algorithm. Callable only by the owner.\",\"params\":{\"digest\":\"The address of the digest contract.\",\"id\":\"The digest ID\"}},\"setNSEC3Digest(uint8,address)\":{\"details\":\"Sets the contract address for an NSEC3 digest algorithm. Callable only by the owner.\",\"params\":{\"digest\":\"The address of the digest contract.\",\"id\":\"The digest ID\"}},\"submitRRSet((bytes,bytes),bytes)\":{\"details\":\"Submits a signed set of RRs to the oracle. RRSETs are only accepted if they are signed with a key that is already trusted, or if they are self-signed, and the signing key is identified by a DS record that is already trusted.\",\"params\":{\"input\":\"The signed RR set. This is in the format described in section 5.3.2 of RFC4035: The RRDATA section from the RRSIG without the signature data, followed by a series of canonicalised RR records that the signature applies to.\",\"proof\":\"The DNSKEY or DS to validate the signature against. Must Already have been submitted and proved previously.\"}},\"submitRRSets(bytes,bytes)\":{\"details\":\"Submits multiple RRSets\",\"params\":{\"_proof\":\"The DNSKEY or DS to validate the first signature against.\",\"data\":\"The data to submit, as a series of chunks. Each chunk is in the format \"},\"returns\":{\"_0\":\"The last RRSET 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"nodeType": "YulIdentifier", "src": "5283:6:22" } ], "functionName": { "name": "lt", "nodeType": "YulIdentifier", "src": "5277:2:22" }, "nodeType": "YulFunctionCall", "src": "5277:13:22" }, "nodeType": "YulForLoop", "post": { "nodeType": "YulBlock", "src": "5291:19:22", "statements": [ { "nodeType": "YulAssignment", "src": "5293:15:22", "value": { "arguments": [ { "name": "i", "nodeType": "YulIdentifier", "src": "5302:1:22" }, { "kind": "number", "nodeType": "YulLiteral", "src": "5305:2:22", "type": "", "value": "32" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "5298:3:22" }, "nodeType": "YulFunctionCall", "src": "5298:10:22" }, "variableNames": [ { "name": "i", "nodeType": "YulIdentifier", "src": "5293:1:22" } ] } ] }, "pre": { "nodeType": "YulBlock", "src": "5273:3:22", "statements": [] }, "src": "5269:113:22" }, { "body": { "nodeType": "YulBlock", "src": "5416:76:22", "statements": [ { "expression": { "arguments": [ { "arguments": [ { "name": "dst", "nodeType": "YulIdentifier", "src": "5466:3:22" }, { "name": "length", "nodeType": "YulIdentifier", "src": "5471:6:22" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "5462:3:22" }, "nodeType": "YulFunctionCall", "src": "5462:16:22" }, { "kind": "number", "nodeType": "YulLiteral", "src": "5480:1:22", "type": "", "value": "0" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "5455:6:22" }, "nodeType": "YulFunctionCall", "src": "5455:27:22" }, "nodeType": "YulExpressionStatement", "src": "5455:27:22" } ] }, "condition": { "arguments": [ { "name": "i", "nodeType": "YulIdentifier", "src": "5397:1:22" }, { "name": "length", "nodeType": "YulIdentifier", "src": "5400:6:22" } ], "functionName": { "name": "gt", "nodeType": "YulIdentifier", "src": "5394:2:22" }, "nodeType": "YulFunctionCall", "src": "5394:13:22" }, "nodeType": "YulIf", "src": "5391:2:22" } ] }, "name": "copy_memory_to_memory", "nodeType": "YulFunctionDefinition", "parameters": [ { "name": "src", "nodeType": "YulTypedName", "src": "5222:3:22", "type": "" }, { "name": "dst", "nodeType": "YulTypedName", "src": "5227:3:22", "type": "" }, { "name": "length", "nodeType": "YulTypedName", "src": "5232:6:22", "type": "" } ], "src": "5191:307:22" }, { "body": { "nodeType": "YulBlock", "src": "5527:25:22", "statements": [ { "expression": { "arguments": [], "functionName": { "name": "invalid", "nodeType": "YulIdentifier", "src": "5537:7:22" }, "nodeType": "YulFunctionCall", "src": "5537:9:22" }, "nodeType": "YulExpressionStatement", "src": "5537:9:22" } ] }, "name": "panic_error", "nodeType": "YulFunctionDefinition", "src": "5504:48:22" } ] }, "contents": "{\n\n function abi_decode_t_bytes_memory_ptr_fromMemory(offset, end) -> array {\n if iszero(slt(add(offset, 0x1f), end)) { revert(0, 0) }\n let length := mload(offset)\n array := allocateMemory(array_allocation_size_t_bytes_memory_ptr(length))\n mstore(array, length)\n let src := add(offset, 0x20)\n let dst := add(array, 0x20)\n if gt(add(src, length), end) { revert(0, 0) }\n copy_memory_to_memory(src, dst, length)\n }\n\n function abi_decode_tuple_t_bytes_memory_ptr_fromMemory(headStart, dataEnd) -> value0 {\n if slt(sub(dataEnd, headStart), 32) { revert(0, 0) }\n\n {\n let offset := mload(add(headStart, 0))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n value0 := abi_decode_t_bytes_memory_ptr_fromMemory(add(headStart, offset), dataEnd)\n }\n\n }\n\n // bytes -> bytes\n function abi_encode_t_bytes_storage_to_t_bytes_memory_ptr_fromStack(value, pos) -> ret {\n let slotValue := sload(value)\n switch and(slotValue, 1)\n case 0 {\n // short byte array\n let length := and(div(slotValue, 2), 0x7f)\n pos := array_storeLengthForEncoding_t_bytes_memory_ptr_fromStack(pos, length)\n mstore(pos, and(slotValue, not(0xff)))\n ret := add(pos, 0x20)\n }\n case 1 {\n // long byte array\n let length := div(slotValue, 2)\n pos := array_storeLengthForEncoding_t_bytes_memory_ptr_fromStack(pos, length)\n let dataPos := array_dataslot_t_bytes_storage(value)\n let i := 0\n for { } lt(i, length) { i := add(i, 0x20) } {\n mstore(add(pos, i), sload(dataPos))\n dataPos := add(dataPos, 1)\n }\n ret := add(pos, i)\n }\n }\n\n // bytes -> bytes\n function abi_encode_t_bytes_storage_to_t_bytes_memory_ptr_nonPadded_inplace_fromStack(value, pos) -> ret {\n let slotValue := sload(value)\n switch and(slotValue, 1)\n case 0 {\n // short byte array\n let length := and(div(slotValue, 2), 0x7f)\n pos := array_storeLengthForEncoding_t_bytes_memory_ptr_nonPadded_inplace_fromStack(pos, length)\n mstore(pos, and(slotValue, not(0xff)))\n ret := add(pos, length)\n }\n case 1 {\n // long byte array\n let length := div(slotValue, 2)\n pos := array_storeLengthForEncoding_t_bytes_memory_ptr_nonPadded_inplace_fromStack(pos, length)\n let dataPos := array_dataslot_t_bytes_storage(value)\n let i := 0\n for { } lt(i, length) { i := add(i, 0x20) } {\n mstore(add(pos, i), sload(dataPos))\n dataPos := add(dataPos, 1)\n }\n ret := add(pos, length)\n }\n }\n\n function abi_encode_t_stringliteral_bc36789e7a1e281436464229828f817d6612f7b477d66591ff96a9e064bcc98a_to_t_bytes_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_bytes_memory_ptr_fromStack(pos, 1)\n\n mstore(add(pos, 0), 0x0000000000000000000000000000000000000000000000000000000000000000)\n\n end := add(pos, 32)\n }\n\n function abi_encode_tuple_packed_t_bytes_storage__to_t_bytes_memory_ptr__nonPadded_inplace_fromStack_reversed(pos , value0) -> end {\n\n pos := abi_encode_t_bytes_storage_to_t_bytes_memory_ptr_nonPadded_inplace_fromStack(value0, pos)\n\n end := pos\n }\n\n function abi_encode_tuple_t_stringliteral_bc36789e7a1e281436464229828f817d6612f7b477d66591ff96a9e064bcc98a_t_bytes_storage__to_t_bytes_memory_ptr_t_bytes_memory_ptr__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 64)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_bc36789e7a1e281436464229828f817d6612f7b477d66591ff96a9e064bcc98a_to_t_bytes_memory_ptr_fromStack( tail)\n\n mstore(add(headStart, 32), sub(tail, headStart))\n tail := abi_encode_t_bytes_storage_to_t_bytes_memory_ptr_fromStack(value0, tail)\n\n }\n\n function allocateMemory(size) -> memPtr {\n memPtr := mload(64)\n let newFreePtr := add(memPtr, size)\n // protect against overflow\n if or(gt(newFreePtr, 0xffffffffffffffff), lt(newFreePtr, memPtr)) { panic_error() }\n mstore(64, newFreePtr)\n }\n\n function array_allocation_size_t_bytes_memory_ptr(length) -> size {\n // Make sure we can allocate memory without overflow\n if gt(length, 0xffffffffffffffff) { panic_error() }\n\n // round up\n size := and(add(length, 0x1f), not(0x1f))\n\n // add length slot\n size := add(size, 0x20)\n\n }\n\n function array_dataslot_t_bytes_storage(ptr) -> data {\n data := ptr\n\n mstore(0, ptr)\n data := keccak256(0, 0x20)\n\n }\n\n function array_storeLengthForEncoding_t_bytes_memory_ptr_fromStack(pos, length) -> updated_pos {\n mstore(pos, length)\n updated_pos := add(pos, 0x20)\n }\n\n function array_storeLengthForEncoding_t_bytes_memory_ptr_nonPadded_inplace_fromStack(pos, length) -> updated_pos {\n updated_pos := pos\n }\n\n function copy_memory_to_memory(src, dst, length) {\n let i := 0\n for { } lt(i, length) { i := add(i, 32) }\n {\n mstore(add(dst, i), mload(add(src, i)))\n }\n if gt(i, length)\n {\n // clear end\n mstore(add(dst, length), 0)\n }\n }\n\n function panic_error() {\n invalid()\n }\n\n}\n", "id": 22, "language": "Yul", "name": "#utility.yul" } ], "deployedGeneratedSources": [ { "ast": { "nodeType": "YulBlock", "src": "0:21889:22", "statements": [ { "body": { "nodeType": "YulBlock", "src": "59:87:22", "statements": [ { "nodeType": "YulAssignment", "src": "69:29:22", "value": { "arguments": [ { "name": "offset", "nodeType": "YulIdentifier", "src": "91:6:22" } ], "functionName": { "name": "calldataload", 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"expression": { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "687:1:22", "type": "", "value": "0" }, { "kind": "number", "nodeType": "YulLiteral", "src": "690:1:22", "type": "", "value": "0" } ], "functionName": { "name": "revert", "nodeType": "YulIdentifier", "src": "680:6:22" }, "nodeType": "YulFunctionCall", "src": "680:12:22" }, "nodeType": "YulExpressionStatement", "src": "680:12:22" } ] }, "condition": { "arguments": [ { "name": "length", "nodeType": "YulIdentifier", "src": "650:6:22" }, { "kind": "number", "nodeType": "YulLiteral", "src": "658:18:22", "type": "", "value": "0xffffffffffffffff" } ], "functionName": { "name": "gt", "nodeType": "YulIdentifier", "src": "647:2:22" }, "nodeType": "YulFunctionCall", "src": "647:30:22" }, "nodeType": "YulIf", "src": "644:2:22" }, { "nodeType": "YulAssignment", "src": "703:29:22", "value": { "arguments": [ { "name": "offset", "nodeType": "YulIdentifier", "src": "719:6:22" }, { "kind": "number", "nodeType": 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"YulIdentifier", "src": "21387:6:22" }, "nodeType": "YulFunctionCall", "src": "21387:58:22" }, "nodeType": "YulIf", "src": "21384:2:22" } ] }, "name": "validator_revert_t_contract$_Digest_$5741", "nodeType": "YulFunctionDefinition", "parameters": [ { "name": "value", "nodeType": "YulTypedName", "src": "21367:5:22", "type": "" } ], "src": "21316:152:22" }, { "body": { "nodeType": "YulBlock", "src": "21537:99:22", "statements": [ { "body": { "nodeType": "YulBlock", "src": "21614:16:22", "statements": [ { "expression": { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "21623:1:22", "type": "", "value": "0" }, { "kind": "number", "nodeType": "YulLiteral", "src": "21626:1:22", "type": "", "value": "0" } ], "functionName": { "name": "revert", "nodeType": "YulIdentifier", "src": "21616:6:22" }, "nodeType": "YulFunctionCall", "src": "21616:12:22" }, "nodeType": "YulExpressionStatement", "src": "21616:12:22" } ] }, "condition": { "arguments": [ { "arguments": [ { "name": "value", "nodeType": "YulIdentifier", "src": "21560:5:22" }, { "arguments": [ { "name": "value", "nodeType": "YulIdentifier", "src": "21605:5:22" } ], "functionName": { "name": "cleanup_t_contract$_NSEC3Digest_$5847", "nodeType": "YulIdentifier", "src": "21567:37:22" }, "nodeType": "YulFunctionCall", "src": "21567:44:22" } ], "functionName": { "name": "eq", "nodeType": "YulIdentifier", "src": "21557:2:22" }, "nodeType": "YulFunctionCall", "src": "21557:55:22" } ], "functionName": { "name": "iszero", "nodeType": "YulIdentifier", "src": "21550:6:22" }, "nodeType": "YulFunctionCall", "src": "21550:63:22" }, "nodeType": "YulIf", "src": "21547:2:22" } ] }, "name": "validator_revert_t_contract$_NSEC3Digest_$5847", "nodeType": "YulFunctionDefinition", "parameters": [ { "name": "value", "nodeType": "YulTypedName", "src": "21530:5:22", "type": "" } ], "src": "21474:162:22" }, { "body": { "nodeType": "YulBlock", "src": "21684:78:22", "statements": [ { "body": { "nodeType": "YulBlock", "src": "21740:16:22", "statements": [ { "expression": { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "21749:1:22", "type": "", "value": "0" }, { "kind": "number", "nodeType": "YulLiteral", "src": "21752:1:22", "type": "", "value": "0" } ], "functionName": { "name": "revert", "nodeType": "YulIdentifier", "src": "21742:6:22" }, "nodeType": "YulFunctionCall", "src": "21742:12:22" }, "nodeType": "YulExpressionStatement", "src": "21742:12:22" } ] }, "condition": { "arguments": [ { "arguments": [ { "name": "value", "nodeType": "YulIdentifier", "src": "21707:5:22" }, { "arguments": [ { "name": "value", "nodeType": "YulIdentifier", "src": "21731:5:22" } ], "functionName": { "name": "cleanup_t_uint16", "nodeType": "YulIdentifier", "src": "21714:16:22" }, "nodeType": "YulFunctionCall", "src": "21714:23:22" } ], "functionName": { "name": "eq", "nodeType": "YulIdentifier", "src": "21704:2:22" }, "nodeType": "YulFunctionCall", "src": "21704:34:22" } ], "functionName": { "name": "iszero", "nodeType": "YulIdentifier", "src": "21697:6:22" }, "nodeType": "YulFunctionCall", "src": "21697:42:22" }, "nodeType": "YulIf", "src": "21694:2:22" } ] }, "name": "validator_revert_t_uint16", "nodeType": "YulFunctionDefinition", "parameters": [ { "name": "value", "nodeType": "YulTypedName", "src": "21677:5:22", "type": "" } ], "src": "21642:120:22" }, { "body": { "nodeType": "YulBlock", "src": "21809:77:22", "statements": [ { "body": { "nodeType": "YulBlock", "src": "21864:16:22", "statements": [ { "expression": { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "21873:1:22", "type": "", "value": "0" }, { "kind": "number", "nodeType": "YulLiteral", "src": "21876:1:22", "type": "", "value": "0" } ], "functionName": { "name": "revert", "nodeType": "YulIdentifier", "src": "21866:6:22" }, "nodeType": "YulFunctionCall", "src": "21866:12:22" }, "nodeType": "YulExpressionStatement", "src": "21866:12:22" } ] }, "condition": { "arguments": [ { "arguments": [ { "name": "value", "nodeType": "YulIdentifier", "src": "21832:5:22" }, { "arguments": [ { "name": "value", "nodeType": "YulIdentifier", "src": "21855:5:22" } ], "functionName": { "name": "cleanup_t_uint8", "nodeType": "YulIdentifier", "src": "21839:15:22" }, "nodeType": "YulFunctionCall", "src": "21839:22:22" } ], "functionName": { "name": "eq", "nodeType": "YulIdentifier", "src": "21829:2:22" }, "nodeType": "YulFunctionCall", "src": "21829:33:22" } ], "functionName": { "name": "iszero", "nodeType": "YulIdentifier", "src": "21822:6:22" }, "nodeType": "YulFunctionCall", "src": "21822:41:22" }, "nodeType": "YulIf", "src": "21819:2:22" } ] }, "name": "validator_revert_t_uint8", "nodeType": "YulFunctionDefinition", "parameters": [ { "name": "value", "nodeType": "YulTypedName", "src": "21802:5:22", "type": "" } ], "src": "21768:118:22" } ] }, "contents": "{\n\n function abi_decode_t_address(offset, end) -> value {\n value := calldataload(offset)\n validator_revert_t_address(value)\n }\n\n function abi_decode_t_bool_fromMemory(offset, end) -> value {\n value := mload(offset)\n validator_revert_t_bool(value)\n }\n\n function abi_decode_t_bytes32_fromMemory(offset, end) -> value {\n value := mload(offset)\n validator_revert_t_bytes32(value)\n }\n\n // bytes\n function abi_decode_t_bytes_calldata_ptr(offset, end) -> arrayPos, length {\n if iszero(slt(add(offset, 0x1f), end)) { revert(0, 0) }\n length := calldataload(offset)\n if gt(length, 0xffffffffffffffff) { revert(0, 0) }\n arrayPos := add(offset, 0x20)\n if gt(add(arrayPos, mul(length, 0x01)), end) { revert(0, 0) }\n }\n\n function abi_decode_t_bytes_memory_ptr(offset, end) -> array {\n if iszero(slt(add(offset, 0x1f), end)) { revert(0, 0) }\n let length := calldataload(offset)\n array := allocateMemory(array_allocation_size_t_bytes_memory_ptr(length))\n mstore(array, length)\n let src := add(offset, 0x20)\n let dst := add(array, 0x20)\n if gt(add(src, length), end) { revert(0, 0) }\n copy_calldata_to_memory(src, dst, length)\n }\n\n function abi_decode_t_contract$_Algorithm_$3863(offset, end) -> value {\n value := calldataload(offset)\n validator_revert_t_contract$_Algorithm_$3863(value)\n }\n\n function abi_decode_t_contract$_Digest_$5741(offset, end) -> value {\n value := calldataload(offset)\n validator_revert_t_contract$_Digest_$5741(value)\n }\n\n function abi_decode_t_contract$_NSEC3Digest_$5847(offset, end) -> value {\n value := calldataload(offset)\n validator_revert_t_contract$_NSEC3Digest_$5847(value)\n }\n\n // struct DNSSEC.RRSetWithSignature\n function abi_decode_t_struct$_RRSetWithSignature_$740_memory_ptr(headStart, end) -> value {\n if slt(sub(end, headStart), 0x40) { revert(0, 0) }\n value := allocateMemory(0x40)\n\n {\n // rrset\n\n let offset := calldataload(add(headStart, 0))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n mstore(add(value, 0x00), abi_decode_t_bytes_memory_ptr(add(headStart, offset), end))\n\n }\n\n {\n // sig\n\n let offset := calldataload(add(headStart, 32))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n mstore(add(value, 0x20), abi_decode_t_bytes_memory_ptr(add(headStart, offset), end))\n\n }\n\n }\n\n function abi_decode_t_uint16(offset, end) -> value {\n value := calldataload(offset)\n validator_revert_t_uint16(value)\n }\n\n function abi_decode_t_uint8(offset, end) -> value {\n value := calldataload(offset)\n validator_revert_t_uint8(value)\n }\n\n function abi_decode_tuple_t_address(headStart, dataEnd) -> value0 {\n if slt(sub(dataEnd, headStart), 32) { revert(0, 0) }\n\n {\n let offset := 0\n value0 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_bool_fromMemory(headStart, dataEnd) -> value0 {\n if slt(sub(dataEnd, headStart), 32) { revert(0, 0) }\n\n {\n let offset := 0\n value0 := abi_decode_t_bool_fromMemory(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_bytes32_fromMemory(headStart, dataEnd) -> value0 {\n if slt(sub(dataEnd, headStart), 32) { revert(0, 0) }\n\n {\n let offset := 0\n value0 := abi_decode_t_bytes32_fromMemory(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_bytes_memory_ptrt_bytes_memory_ptr(headStart, dataEnd) -> value0, value1 {\n if slt(sub(dataEnd, headStart), 64) { revert(0, 0) }\n\n {\n let offset := calldataload(add(headStart, 0))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n value0 := abi_decode_t_bytes_memory_ptr(add(headStart, offset), dataEnd)\n }\n\n {\n let offset := calldataload(add(headStart, 32))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n value1 := abi_decode_t_bytes_memory_ptr(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_struct$_RRSetWithSignature_$740_memory_ptrt_bytes_memory_ptr(headStart, dataEnd) -> value0, value1 {\n if slt(sub(dataEnd, headStart), 64) { revert(0, 0) }\n\n {\n let offset := calldataload(add(headStart, 0))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n value0 := abi_decode_t_struct$_RRSetWithSignature_$740_memory_ptr(add(headStart, offset), dataEnd)\n }\n\n {\n let offset := calldataload(add(headStart, 32))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n value1 := abi_decode_t_bytes_memory_ptr(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_uint16t_bytes_calldata_ptr(headStart, dataEnd) -> value0, value1, value2 {\n if slt(sub(dataEnd, headStart), 64) { revert(0, 0) }\n\n {\n let offset := 0\n value0 := abi_decode_t_uint16(add(headStart, offset), dataEnd)\n }\n\n {\n let offset := calldataload(add(headStart, 32))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n value1, value2 := abi_decode_t_bytes_calldata_ptr(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_uint16t_bytes_memory_ptrt_struct$_RRSetWithSignature_$740_memory_ptrt_bytes_memory_ptr(headStart, dataEnd) -> value0, value1, value2, value3 {\n if slt(sub(dataEnd, headStart), 128) { revert(0, 0) }\n\n {\n let offset := 0\n value0 := abi_decode_t_uint16(add(headStart, offset), dataEnd)\n }\n\n {\n let offset := calldataload(add(headStart, 32))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n value1 := abi_decode_t_bytes_memory_ptr(add(headStart, offset), dataEnd)\n }\n\n {\n let offset := calldataload(add(headStart, 64))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n value2 := abi_decode_t_struct$_RRSetWithSignature_$740_memory_ptr(add(headStart, offset), dataEnd)\n }\n\n {\n let offset := calldataload(add(headStart, 96))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n value3 := abi_decode_t_bytes_memory_ptr(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_uint16t_bytes_memory_ptrt_struct$_RRSetWithSignature_$740_memory_ptrt_struct$_RRSetWithSignature_$740_memory_ptrt_bytes_memory_ptr(headStart, dataEnd) -> value0, value1, value2, value3, value4 {\n if slt(sub(dataEnd, headStart), 160) { revert(0, 0) }\n\n {\n let offset := 0\n value0 := abi_decode_t_uint16(add(headStart, offset), dataEnd)\n }\n\n {\n let offset := calldataload(add(headStart, 32))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n value1 := abi_decode_t_bytes_memory_ptr(add(headStart, offset), dataEnd)\n }\n\n {\n let offset := calldataload(add(headStart, 64))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n value2 := abi_decode_t_struct$_RRSetWithSignature_$740_memory_ptr(add(headStart, offset), dataEnd)\n }\n\n {\n let offset := calldataload(add(headStart, 96))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n value3 := abi_decode_t_struct$_RRSetWithSignature_$740_memory_ptr(add(headStart, offset), dataEnd)\n }\n\n {\n let offset := calldataload(add(headStart, 128))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n value4 := abi_decode_t_bytes_memory_ptr(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_uint8(headStart, dataEnd) -> value0 {\n if slt(sub(dataEnd, headStart), 32) { revert(0, 0) }\n\n {\n let offset := 0\n value0 := abi_decode_t_uint8(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_uint8t_contract$_Algorithm_$3863(headStart, dataEnd) -> value0, value1 {\n if slt(sub(dataEnd, headStart), 64) { revert(0, 0) }\n\n {\n let offset := 0\n value0 := abi_decode_t_uint8(add(headStart, offset), dataEnd)\n }\n\n {\n let offset := 32\n value1 := abi_decode_t_contract$_Algorithm_$3863(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_uint8t_contract$_Digest_$5741(headStart, dataEnd) -> value0, value1 {\n if slt(sub(dataEnd, headStart), 64) { revert(0, 0) }\n\n {\n let offset := 0\n value0 := abi_decode_t_uint8(add(headStart, offset), dataEnd)\n }\n\n {\n let offset := 32\n value1 := abi_decode_t_contract$_Digest_$5741(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_uint8t_contract$_NSEC3Digest_$5847(headStart, dataEnd) -> value0, value1 {\n if slt(sub(dataEnd, headStart), 64) { revert(0, 0) }\n\n {\n let offset := 0\n value0 := abi_decode_t_uint8(add(headStart, offset), dataEnd)\n }\n\n {\n let offset := 32\n value1 := abi_decode_t_contract$_NSEC3Digest_$5847(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_encode_t_address_to_t_address_fromStack(value, pos) {\n mstore(pos, cleanup_t_address(value))\n }\n\n function abi_encode_t_bytes20_to_t_bytes20_fromStack(value, pos) {\n mstore(pos, cleanup_t_bytes20(value))\n }\n\n // bytes -> bytes\n function abi_encode_t_bytes_calldata_ptr_to_t_bytes_memory_ptr_nonPadded_inplace_fromStack(start, length, pos) -> end {\n pos := array_storeLengthForEncoding_t_bytes_memory_ptr_nonPadded_inplace_fromStack(pos, length)\n\n copy_calldata_to_memory(start, pos, length)\n end := add(pos, length)\n }\n\n function abi_encode_t_bytes_memory_ptr_to_t_bytes_memory_ptr_fromStack(value, pos) -> end {\n let length := array_length_t_bytes_memory_ptr(value)\n pos := array_storeLengthForEncoding_t_bytes_memory_ptr_fromStack(pos, length)\n copy_memory_to_memory(add(value, 0x20), pos, length)\n end := add(pos, round_up_to_mul_of_32(length))\n }\n\n function abi_encode_t_contract$_Algorithm_$3863_to_t_address_fromStack(value, pos) {\n mstore(pos, convert_t_contract$_Algorithm_$3863_to_t_address(value))\n }\n\n function abi_encode_t_contract$_Digest_$5741_to_t_address_fromStack(value, pos) {\n mstore(pos, convert_t_contract$_Digest_$5741_to_t_address(value))\n }\n\n function abi_encode_t_contract$_NSEC3Digest_$5847_to_t_address_fromStack(value, pos) {\n mstore(pos, convert_t_contract$_NSEC3Digest_$5847_to_t_address(value))\n }\n\n function abi_encode_t_stringliteral_89cd18b41d1090ca2df015e80f663c90777bc556f4d3a0c572e3ad7262b44a7d_to_t_string_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, 20)\n\n mstore(add(pos, 0), \"No valid proof found\")\n\n end := add(pos, 32)\n }\n\n function abi_encode_t_uint16_to_t_uint256_fromStack(value, pos) {\n mstore(pos, convert_t_uint16_to_t_uint256(value))\n }\n\n function abi_encode_t_uint32_to_t_uint32_fromStack(value, pos) {\n mstore(pos, cleanup_t_uint32(value))\n }\n\n function abi_encode_t_uint64_to_t_uint64_fromStack(value, pos) {\n mstore(pos, cleanup_t_uint64(value))\n }\n\n function abi_encode_t_uint8_to_t_uint8_fromStack(value, pos) {\n mstore(pos, cleanup_t_uint8(value))\n }\n\n function abi_encode_tuple_packed_t_bytes_calldata_ptr__to_t_bytes_memory_ptr__nonPadded_inplace_fromStack_reversed(pos , value1, value0) -> end {\n\n pos := abi_encode_t_bytes_calldata_ptr_to_t_bytes_memory_ptr_nonPadded_inplace_fromStack(value0, value1, pos)\n\n end := pos\n }\n\n function abi_encode_tuple_t_address__to_t_address__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 32)\n\n abi_encode_t_address_to_t_address_fromStack(value0, add(headStart, 0))\n\n }\n\n function abi_encode_tuple_t_bytes_memory_ptr__to_t_bytes_memory_ptr__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_bytes_memory_ptr_to_t_bytes_memory_ptr_fromStack(value0, tail)\n\n }\n\n function abi_encode_tuple_t_bytes_memory_ptr_t_bytes_memory_ptr__to_t_bytes_memory_ptr_t_bytes_memory_ptr__fromStack_reversed(headStart , value1, value0) -> tail {\n tail := add(headStart, 64)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_bytes_memory_ptr_to_t_bytes_memory_ptr_fromStack(value0, tail)\n\n mstore(add(headStart, 32), sub(tail, headStart))\n tail := abi_encode_t_bytes_memory_ptr_to_t_bytes_memory_ptr_fromStack(value1, tail)\n\n }\n\n function abi_encode_tuple_t_bytes_memory_ptr_t_bytes_memory_ptr_t_bytes_memory_ptr__to_t_bytes_memory_ptr_t_bytes_memory_ptr_t_bytes_memory_ptr__fromStack_reversed(headStart , value2, value1, value0) -> tail {\n tail := add(headStart, 96)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_bytes_memory_ptr_to_t_bytes_memory_ptr_fromStack(value0, tail)\n\n mstore(add(headStart, 32), sub(tail, headStart))\n tail := abi_encode_t_bytes_memory_ptr_to_t_bytes_memory_ptr_fromStack(value1, tail)\n\n mstore(add(headStart, 64), sub(tail, headStart))\n tail := abi_encode_t_bytes_memory_ptr_to_t_bytes_memory_ptr_fromStack(value2, tail)\n\n }\n\n function abi_encode_tuple_t_bytes_memory_ptr_t_bytes_memory_ptr_t_uint16__to_t_bytes_memory_ptr_t_bytes_memory_ptr_t_uint256__fromStack_reversed(headStart , value2, value1, value0) -> tail {\n tail := add(headStart, 96)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_bytes_memory_ptr_to_t_bytes_memory_ptr_fromStack(value0, tail)\n\n mstore(add(headStart, 32), sub(tail, headStart))\n tail := abi_encode_t_bytes_memory_ptr_to_t_bytes_memory_ptr_fromStack(value1, tail)\n\n abi_encode_t_uint16_to_t_uint256_fromStack(value2, add(headStart, 64))\n\n }\n\n function abi_encode_tuple_t_contract$_Algorithm_$3863__to_t_address__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 32)\n\n abi_encode_t_contract$_Algorithm_$3863_to_t_address_fromStack(value0, add(headStart, 0))\n\n }\n\n function abi_encode_tuple_t_contract$_Digest_$5741__to_t_address__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 32)\n\n abi_encode_t_contract$_Digest_$5741_to_t_address_fromStack(value0, add(headStart, 0))\n\n }\n\n function abi_encode_tuple_t_contract$_NSEC3Digest_$5847__to_t_address__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 32)\n\n abi_encode_t_contract$_NSEC3Digest_$5847_to_t_address_fromStack(value0, add(headStart, 0))\n\n }\n\n function abi_encode_tuple_t_stringliteral_89cd18b41d1090ca2df015e80f663c90777bc556f4d3a0c572e3ad7262b44a7d__to_t_string_memory_ptr__fromStack_reversed(headStart ) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_89cd18b41d1090ca2df015e80f663c90777bc556f4d3a0c572e3ad7262b44a7d_to_t_string_memory_ptr_fromStack( tail)\n\n }\n\n function abi_encode_tuple_t_uint32_t_uint64_t_bytes20__to_t_uint32_t_uint64_t_bytes20__fromStack_reversed(headStart , value2, value1, value0) -> tail {\n tail := add(headStart, 96)\n\n abi_encode_t_uint32_to_t_uint32_fromStack(value0, add(headStart, 0))\n\n abi_encode_t_uint64_to_t_uint64_fromStack(value1, add(headStart, 32))\n\n abi_encode_t_bytes20_to_t_bytes20_fromStack(value2, add(headStart, 64))\n\n }\n\n function abi_encode_tuple_t_uint8_t_address__to_t_uint8_t_address__fromStack_reversed(headStart , value1, value0) -> tail {\n tail := add(headStart, 64)\n\n abi_encode_t_uint8_to_t_uint8_fromStack(value0, add(headStart, 0))\n\n abi_encode_t_address_to_t_address_fromStack(value1, add(headStart, 32))\n\n }\n\n function allocateMemory(size) -> memPtr {\n memPtr := mload(64)\n let newFreePtr := add(memPtr, size)\n // protect against overflow\n if or(gt(newFreePtr, 0xffffffffffffffff), lt(newFreePtr, memPtr)) { panic_error() }\n mstore(64, newFreePtr)\n }\n\n function array_allocation_size_t_bytes_memory_ptr(length) -> size {\n // Make sure we can allocate memory without overflow\n if gt(length, 0xffffffffffffffff) { panic_error() }\n\n // round up\n size := and(add(length, 0x1f), not(0x1f))\n\n // add length slot\n size := add(size, 0x20)\n\n }\n\n function array_length_t_bytes_memory_ptr(value) -> length {\n\n length := mload(value)\n\n }\n\n function array_storeLengthForEncoding_t_bytes_memory_ptr_fromStack(pos, length) -> updated_pos {\n mstore(pos, length)\n updated_pos := add(pos, 0x20)\n }\n\n function array_storeLengthForEncoding_t_bytes_memory_ptr_nonPadded_inplace_fromStack(pos, length) -> updated_pos {\n updated_pos := pos\n }\n\n function array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, length) -> updated_pos {\n mstore(pos, length)\n updated_pos := add(pos, 0x20)\n }\n\n function cleanup_t_address(value) -> cleaned {\n cleaned := cleanup_t_uint160(value)\n }\n\n function cleanup_t_bool(value) -> cleaned {\n cleaned := iszero(iszero(value))\n }\n\n function cleanup_t_bytes20(value) -> cleaned {\n cleaned := and(value, 0xffffffffffffffffffffffffffffffffffffffff000000000000000000000000)\n }\n\n function cleanup_t_bytes32(value) -> cleaned {\n cleaned := value\n }\n\n function cleanup_t_contract$_Algorithm_$3863(value) -> cleaned {\n cleaned := cleanup_t_address(value)\n }\n\n function cleanup_t_contract$_Digest_$5741(value) -> cleaned {\n cleaned := cleanup_t_address(value)\n }\n\n function cleanup_t_contract$_NSEC3Digest_$5847(value) -> cleaned {\n cleaned := cleanup_t_address(value)\n }\n\n function cleanup_t_uint16(value) -> cleaned {\n cleaned := and(value, 0xffff)\n }\n\n function cleanup_t_uint160(value) -> cleaned {\n cleaned := and(value, 0xffffffffffffffffffffffffffffffffffffffff)\n }\n\n function cleanup_t_uint32(value) -> cleaned {\n cleaned := and(value, 0xffffffff)\n }\n\n function cleanup_t_uint64(value) -> cleaned {\n cleaned := and(value, 0xffffffffffffffff)\n }\n\n function cleanup_t_uint8(value) -> cleaned {\n cleaned := and(value, 0xff)\n }\n\n function convert_t_contract$_Algorithm_$3863_to_t_address(value) -> converted {\n converted := convert_t_contract$_Algorithm_$3863_to_t_uint160(value)\n }\n\n function convert_t_contract$_Algorithm_$3863_to_t_uint160(value) -> converted {\n converted := cleanup_t_uint160(value)\n }\n\n function convert_t_contract$_Digest_$5741_to_t_address(value) -> converted {\n converted := convert_t_contract$_Digest_$5741_to_t_uint160(value)\n }\n\n function convert_t_contract$_Digest_$5741_to_t_uint160(value) -> converted {\n converted := cleanup_t_uint160(value)\n }\n\n function convert_t_contract$_NSEC3Digest_$5847_to_t_address(value) -> converted {\n converted := convert_t_contract$_NSEC3Digest_$5847_to_t_uint160(value)\n }\n\n function convert_t_contract$_NSEC3Digest_$5847_to_t_uint160(value) -> converted {\n converted := cleanup_t_uint160(value)\n }\n\n function convert_t_uint16_to_t_uint256(value) -> converted {\n converted := cleanup_t_uint16(value)\n }\n\n function copy_calldata_to_memory(src, dst, length) {\n calldatacopy(dst, src, length)\n // clear end\n mstore(add(dst, length), 0)\n }\n\n function copy_memory_to_memory(src, dst, length) {\n let i := 0\n for { } lt(i, length) { i := add(i, 32) }\n {\n mstore(add(dst, i), mload(add(src, i)))\n }\n if gt(i, length)\n {\n // clear end\n mstore(add(dst, length), 0)\n }\n }\n\n function panic_error() {\n invalid()\n }\n\n function round_up_to_mul_of_32(value) -> result {\n result := and(add(value, 31), not(31))\n }\n\n function validator_revert_t_address(value) {\n if iszero(eq(value, cleanup_t_address(value))) { revert(0, 0) }\n }\n\n function validator_revert_t_bool(value) {\n if iszero(eq(value, cleanup_t_bool(value))) { revert(0, 0) }\n }\n\n function validator_revert_t_bytes32(value) {\n if iszero(eq(value, cleanup_t_bytes32(value))) { revert(0, 0) }\n }\n\n function validator_revert_t_contract$_Algorithm_$3863(value) {\n if iszero(eq(value, cleanup_t_contract$_Algorithm_$3863(value))) { revert(0, 0) }\n }\n\n function validator_revert_t_contract$_Digest_$5741(value) {\n if iszero(eq(value, cleanup_t_contract$_Digest_$5741(value))) { revert(0, 0) }\n }\n\n function validator_revert_t_contract$_NSEC3Digest_$5847(value) {\n if iszero(eq(value, cleanup_t_contract$_NSEC3Digest_$5847(value))) { revert(0, 0) }\n }\n\n function validator_revert_t_uint16(value) {\n if iszero(eq(value, cleanup_t_uint16(value))) { revert(0, 0) }\n }\n\n function validator_revert_t_uint8(value) {\n if iszero(eq(value, cleanup_t_uint8(value))) { revert(0, 0) }\n }\n\n}\n", "id": 22, "language": "Yul", "name": "#utility.yul" } ], "sourceMap": 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"source": "pragma solidity ^0.7.4;\npragma experimental ABIEncoderV2;\n\nimport \"./Owned.sol\";\nimport \"./BytesUtils.sol\";\nimport \"./RRUtils.sol\";\nimport \"./DNSSEC.sol\";\nimport \"./algorithms/Algorithm.sol\";\nimport \"./digests/Digest.sol\";\nimport \"./nsec3digests/NSEC3Digest.sol\";\nimport \"@ensdomains/buffer/contracts/Buffer.sol\";\n\n/*\n * @dev An oracle contract that verifies and stores DNSSEC-validated DNS records.\n *\n * TODO: Support for NSEC3 records\n */\ncontract DNSSECImpl is DNSSEC, Owned {\n using Buffer for Buffer.buffer;\n using BytesUtils for bytes;\n using RRUtils for *;\n\n uint16 constant DNSCLASS_IN = 1;\n\n uint16 constant DNSTYPE_NS = 2;\n uint16 constant DNSTYPE_SOA = 6;\n uint16 constant DNSTYPE_DNAME = 39;\n uint16 constant DNSTYPE_DS = 43;\n uint16 constant DNSTYPE_RRSIG = 46;\n uint16 constant DNSTYPE_NSEC = 47;\n uint16 constant DNSTYPE_DNSKEY = 48;\n uint16 constant DNSTYPE_NSEC3 = 50;\n\n uint constant DNSKEY_FLAG_ZONEKEY = 0x100;\n\n uint8 constant ALGORITHM_RSASHA256 = 8;\n\n uint8 constant DIGEST_ALGORITHM_SHA256 = 2;\n\n struct RRSet {\n uint32 inception;\n uint64 inserted;\n bytes20 hash;\n }\n\n // (name, type) => RRSet\n mapping (bytes32 => mapping(uint16 => RRSet)) rrsets;\n\n mapping (uint8 => Algorithm) public algorithms;\n mapping (uint8 => Digest) public digests;\n mapping (uint8 => NSEC3Digest) public nsec3Digests;\n\n event Test(uint t);\n event Marker();\n\n /**\n * @dev Constructor.\n * @param _anchors The binary format RR entries for the root DS records.\n */\n constructor(bytes memory _anchors) public {\n // Insert the 'trust anchors' - the key hashes that start the chain\n // of trust for all other records.\n anchors = _anchors;\n rrsets[keccak256(hex\"00\")][DNSTYPE_DS] = RRSet({\n inception: uint32(0),\n inserted: uint64(block.timestamp),\n hash: bytes20(keccak256(anchors))\n });\n emit RRSetUpdated(hex\"00\", anchors);\n }\n\n /**\n * @dev Sets the contract address for a signature verification algorithm.\n * Callable only by the owner.\n * @param id The algorithm ID\n * @param algo The address of the algorithm contract.\n */\n function setAlgorithm(uint8 id, Algorithm algo) public owner_only {\n algorithms[id] = algo;\n emit AlgorithmUpdated(id, address(algo));\n }\n\n /**\n * @dev Sets the contract address for a digest verification algorithm.\n * Callable only by the owner.\n * @param id The digest ID\n * @param digest The address of the digest contract.\n */\n function setDigest(uint8 id, Digest digest) public owner_only {\n digests[id] = digest;\n emit DigestUpdated(id, address(digest));\n }\n\n /**\n * @dev Sets the contract address for an NSEC3 digest algorithm.\n * Callable only by the owner.\n * @param id The digest ID\n * @param digest The address of the digest contract.\n */\n function setNSEC3Digest(uint8 id, NSEC3Digest digest) public owner_only {\n nsec3Digests[id] = digest;\n emit NSEC3DigestUpdated(id, address(digest));\n }\n\n /**\n * @dev Submits multiple RRSets\n * @param data The data to submit, as a series of chunks. Each chunk is\n * in the format \n * @param _proof The DNSKEY or DS to validate the first signature against.\n * @return The last RRSET submitted.\n */\n function submitRRSets(bytes memory data, bytes memory _proof) public override returns (bytes memory) {\n uint offset = 0;\n bytes memory proof = _proof;\n while(offset < data.length) {\n RRSetWithSignature memory input;\n input.rrset = data.substring(offset + 2, data.readUint16(offset));\n offset += input.rrset.length + 2;\n input.sig = data.substring(offset + 2, data.readUint16(offset));\n offset += input.sig.length + 2;\n proof = _submitRRSet(input, proof);\n }\n return proof;\n }\n\n /**\n * @dev Submits a signed set of RRs to the oracle.\n *\n * RRSETs are only accepted if they are signed with a key that is already\n * trusted, or if they are self-signed, and the signing key is identified by\n * a DS record that is already trusted.\n *\n * @param input The signed RR set. This is in the format described in section\n * 5.3.2 of RFC4035: The RRDATA section from the RRSIG without the signature\n * data, followed by a series of canonicalised RR records that the signature\n * applies to.\n * @param proof The DNSKEY or DS to validate the signature against. Must Already\n * have been submitted and proved previously.\n */\n function submitRRSet(RRSetWithSignature memory input, bytes memory proof)\n public override\n returns (bytes memory)\n {\n return _submitRRSet(input, proof);\n }\n\n /**\n * @dev Deletes an RR from the oracle.\n *\n * @param deleteType The DNS record type to delete.\n * @param deleteName which you want to delete\n * @param nsec The signed NSEC RRset. This is in the format described in section\n * 5.3.2 of RFC4035: The RRDATA section from the RRSIG without the signature\n * data, followed by a series of canonicalised RR records that the signature\n * applies to.\n */\n function deleteRRSet(uint16 deleteType, bytes memory deleteName, RRSetWithSignature memory nsec, bytes memory proof)\n public override\n {\n RRUtils.SignedSet memory rrset;\n rrset = validateSignedSet(nsec, proof);\n require(rrset.typeCovered == DNSTYPE_NSEC);\n\n // Don't let someone use an old proof to delete a new name\n require(int32(rrset.inception - rrsets[keccak256(deleteName)][deleteType].inception) >= 0);\n\n for (RRUtils.RRIterator memory iter = rrset.rrs(); !iter.done(); iter.next()) {\n // We're dealing with three names here:\n // - deleteName is the name the user wants us to delete\n // - nsecName is the owner name of the NSEC record\n // - nextName is the next name specified in the NSEC record\n //\n // And three cases:\n // - deleteName equals nsecName, in which case we can delete the\n // record if it's not in the type bitmap.\n // - nextName comes after nsecName, in which case we can delete\n // the record if deleteName comes between nextName and nsecName.\n // - nextName comes before nsecName, in which case nextName is the\n // zone apex, and deleteName must come after nsecName.\n checkNsecName(iter, rrset.name, deleteName, deleteType);\n delete rrsets[keccak256(deleteName)][deleteType];\n return;\n }\n // We should never reach this point\n revert();\n }\n\n function checkNsecName(RRUtils.RRIterator memory iter, bytes memory nsecName, bytes memory deleteName, uint16 deleteType) private pure {\n uint rdataOffset = iter.rdataOffset;\n uint nextNameLength = iter.data.nameLength(rdataOffset);\n uint rDataLength = iter.nextOffset - iter.rdataOffset;\n\n // We assume that there is always typed bitmap after the next domain name\n require(rDataLength > nextNameLength);\n\n int compareResult = deleteName.compareNames(nsecName);\n if(compareResult == 0) {\n // Name to delete is on the same label as the NSEC record\n require(!iter.data.checkTypeBitmap(rdataOffset + nextNameLength, deleteType));\n } else {\n // First check if the NSEC next name comes after the NSEC name.\n bytes memory nextName = iter.data.substring(rdataOffset,nextNameLength);\n // deleteName must come after nsecName\n require(compareResult > 0);\n if(nsecName.compareNames(nextName) < 0) {\n // deleteName must also come before nextName\n require(deleteName.compareNames(nextName) < 0);\n }\n }\n }\n\n /**\n * @dev Deletes an RR from the oracle using an NSEC3 proof.\n * Deleting a record using NSEC3 requires using up to two NSEC3 records. There are two cases:\n * 1. The name exists, but the record type doesn't. Eg, example.com has A records but no TXT records.\n * 2. The name does not exist, but a parent name does.\n * In the first case, we submit one NSEC3 proof in `closestEncloser` that matches the target name\n * but does not have the bit for `deleteType` set in its type bitmap. In the second case, we submit\n * two proofs: closestEncloser and nextClosest, that together prove that the name does not exist.\n * NSEC3 records are in the format described in section 5.3.2 of RFC4035: The RRDATA section\n * from the RRSIG without the signature data, followed by a series of canonicalised RR records\n * that the signature applies to.\n *\n * @param deleteType The DNS record type to delete.\n * @param deleteName The name to delete.\n * @param closestEncloser An NSEC3 proof matching the closest enclosing name - that is,\n * the nearest ancestor of the target name that *does* exist.\n * @param nextClosest An NSEC3 proof covering the next closest name. This proves that the immediate\n * subdomain of the closestEncloser does not exist.\n * @param dnskey An encoded DNSKEY record that has already been submitted to the oracle and can be used\n * to verify the signatures closestEncloserSig and nextClosestSig\n */\n function deleteRRSetNSEC3(uint16 deleteType, bytes memory deleteName, RRSetWithSignature memory closestEncloser, RRSetWithSignature memory nextClosest, bytes memory dnskey)\n public override\n {\n int32 originalInception = int32(rrsets[keccak256(deleteName)][deleteType].inception);\n\n RRUtils.SignedSet memory ce = validateSignedSet(closestEncloser, dnskey);\n checkNSEC3Validity(ce, deleteName, originalInception);\n\n RRUtils.SignedSet memory nc;\n if(nextClosest.rrset.length > 0) {\n nc = validateSignedSet(nextClosest, dnskey);\n checkNSEC3Validity(nc, deleteName, originalInception);\n }\n\n RRUtils.NSEC3 memory ceNSEC3 = readNSEC3(ce);\n // The flags field must be 0 or 1 (RFC5155 section 8.2).\n require(ceNSEC3.flags & 0xfe == 0);\n // Check that the closest encloser is from the correct zone (RFC5155 section 8.3)\n // \"The DNAME type bit must not be set and the NS type bit may only be set if the SOA type bit is set.\"\n require(!ceNSEC3.checkTypeBitmap(DNSTYPE_DNAME) && (!ceNSEC3.checkTypeBitmap(DNSTYPE_NS) || ceNSEC3.checkTypeBitmap(DNSTYPE_SOA)));\n\n // Case 1: deleteName does exist, but no records of RRTYPE deleteType do.\n if(isMatchingNSEC3Record(deleteType, deleteName, ce.name, ceNSEC3)) {\n delete rrsets[keccak256(deleteName)][deleteType];\n // Case 2: deleteName does not exist.\n } else if(isCoveringNSEC3Record(deleteType, deleteName, ce.name, ceNSEC3, nc.name, readNSEC3(nc))) {\n delete rrsets[keccak256(deleteName)][deleteType];\n } else {\n revert();\n }\n }\n\n function checkNSEC3Validity(RRUtils.SignedSet memory nsec, bytes memory deleteName, int32 originalInception) private pure {\n // The records must have been signed after the record we're trying to delete\n require(int32(nsec.inception) - originalInception >= 0);\n\n // The record must be an NSEC3\n require(nsec.typeCovered == DNSTYPE_NSEC3);\n\n // nsecName is of the form .zone.xyz. is the NSEC3 hash of the entire name the NSEC3 record matches, while\n // zone.xyz can be any ancestor of that name. We'll check that, so someone can't use a record on foo.com\n // as proof of the nonexistence of bar.org.\n require(checkNSEC3OwnerName(nsec.name, deleteName));\n }\n\n function isMatchingNSEC3Record(uint16 deleteType, bytes memory deleteName, bytes memory closestEncloserName, RRUtils.NSEC3 memory closestEncloser) private view returns(bool) {\n // Check the record matches the hashed name, but the type bitmap does not include the type\n if(checkNSEC3Name(closestEncloser, closestEncloserName, deleteName)) {\n return !closestEncloser.checkTypeBitmap(deleteType);\n }\n\n return false;\n }\n\n function isCoveringNSEC3Record(uint16 deleteType, bytes memory deleteName, bytes memory ceName, RRUtils.NSEC3 memory ce, bytes memory ncName, RRUtils.NSEC3 memory nc) private view returns(bool) {\n // The flags field must be 0 or 1 (RFC5155 section 8.2).\n require(nc.flags & 0xfe == 0);\n\n bytes32 ceNameHash = decodeOwnerNameHash(ceName);\n bytes32 ncNameHash = decodeOwnerNameHash(ncName);\n\n uint lastOffset = 0;\n // Iterate over suffixes of the name to delete until one matches the closest encloser\n for(uint offset = deleteName.readUint8(0) + 1; offset < deleteName.length; offset += deleteName.readUint8(offset) + 1) {\n if(hashName(ce, deleteName.substring(offset, deleteName.length - offset)) == ceNameHash) {\n // Check that the next closest record encloses the name one label longer\n bytes32 checkHash = hashName(nc, deleteName.substring(lastOffset, deleteName.length - lastOffset));\n if(ncNameHash < nc.nextHashedOwnerName) {\n return checkHash > ncNameHash && checkHash < nc.nextHashedOwnerName;\n } else {\n return checkHash > ncNameHash || checkHash < nc.nextHashedOwnerName;\n }\n }\n lastOffset = offset;\n }\n // If we reached the root without finding a match, return false.\n return false;\n }\n\n function readNSEC3(RRUtils.SignedSet memory ss) private pure returns(RRUtils.NSEC3 memory) {\n RRUtils.RRIterator memory iter = ss.rrs();\n return iter.data.readNSEC3(iter.rdataOffset, iter.nextOffset - iter.rdataOffset);\n }\n\n function checkNSEC3Name(RRUtils.NSEC3 memory nsec, bytes memory ownerName, bytes memory deleteName) private view returns(bool) {\n // Compute the NSEC3 name hash of the name to delete.\n bytes32 deleteNameHash = hashName(nsec, deleteName);\n\n // Decode the NSEC3 name hash from the first label of the NSEC3 owner name.\n bytes32 nsecNameHash = decodeOwnerNameHash(ownerName);\n\n return deleteNameHash == nsecNameHash;\n }\n\n function hashName(RRUtils.NSEC3 memory nsec, bytes memory name) private view returns(bytes32) {\n return nsec3Digests[nsec.hashAlgorithm].hash(nsec.salt, name, nsec.iterations);\n }\n\n function decodeOwnerNameHash(bytes memory name) private pure returns(bytes32) {\n return name.base32HexDecodeWord(1, uint(name.readUint8(0)));\n }\n\n function checkNSEC3OwnerName(bytes memory nsecName, bytes memory deleteName) private pure returns(bool) {\n uint nsecNameOffset = nsecName.readUint8(0) + 1;\n uint deleteNameOffset = 0;\n while(deleteNameOffset < deleteName.length) {\n if(deleteName.equals(deleteNameOffset, nsecName, nsecNameOffset)) {\n return true;\n }\n deleteNameOffset += deleteName.readUint8(deleteNameOffset) + 1;\n }\n return false;\n }\n\n /**\n * @dev Returns data about the RRs (if any) known to this oracle with the provided type and name.\n * @param dnstype The DNS record type to query.\n * @param name The name to query, in DNS label-sequence format.\n * @return inception The unix timestamp at which the signature for this RRSET was created.\n * @return inserted The unix timestamp at which this RRSET was inserted into the oracle.\n * @return hash The hash of the RRset that was inserted.\n */\n function rrdata(uint16 dnstype, bytes calldata name) external override view returns (uint32, uint64, bytes20) {\n RRSet storage result = rrsets[keccak256(name)][dnstype];\n return (result.inception, result.inserted, result.hash);\n }\n\n function _submitRRSet(RRSetWithSignature memory input, bytes memory proof) internal returns (bytes memory) {\n RRUtils.SignedSet memory rrset;\n rrset = validateSignedSet(input, proof);\n\n RRSet storage storedSet = rrsets[keccak256(rrset.name)][rrset.typeCovered];\n if (storedSet.inserted > 0) {\n // To replace an existing rrset, the signature must be at least as new\n require(int32(rrset.inception - storedSet.inception) >= 0);\n }\n\n rrsets[keccak256(rrset.name)][rrset.typeCovered] = RRSet({\n inception: rrset.inception,\n inserted: uint64(block.timestamp),\n hash: bytes20(keccak256(rrset.data))\n });\n\n emit RRSetUpdated(rrset.name, rrset.data);\n\n return rrset.data;\n }\n\n /**\n * @dev Submits a signed set of RRs to the oracle.\n *\n * RRSETs are only accepted if they are signed with a key that is already\n * trusted, or if they are self-signed, and the signing key is identified by\n * a DS record that is already trusted.\n *\n * @param input The signed RR set. This is in the format described in section\n * 5.3.2 of RFC4035: The RRDATA section from the RRSIG without the signature\n * data, followed by a series of canonicalised RR records that the signature\n * applies to.\n * @param proof The DNSKEY or DS to validate the signature against. Must Already\n * have been submitted and proved previously.\n */\n function validateSignedSet(RRSetWithSignature memory input, bytes memory proof) internal view returns(RRUtils.SignedSet memory rrset) {\n rrset = input.rrset.readSignedSet();\n require(validProof(rrset.signerName, proof));\n\n // Do some basic checks on the RRs and extract the name\n bytes memory name = validateRRs(rrset, rrset.typeCovered);\n require(name.labelCount(0) == rrset.labels);\n rrset.name = name;\n\n // All comparisons involving the Signature Expiration and\n // Inception fields MUST use \"serial number arithmetic\", as\n // defined in RFC 1982\n\n // o The validator's notion of the current time MUST be less than or\n // equal to the time listed in the RRSIG RR's Expiration field.\n require(int32(rrset.expiration - block.timestamp) >= 0);\n\n // o The validator's notion of the current time MUST be greater than or\n // equal to the time listed in the RRSIG RR's Inception field.\n require(int32(block.timestamp - rrset.inception) >= 0);\n\n // Validate the signature\n verifySignature(name, rrset, input, proof);\n\n return rrset;\n }\n\n function validProof(bytes memory name, bytes memory proof) internal view returns(bool) {\n uint16 dnstype = proof.readUint16(proof.nameLength(0));\n return rrsets[keccak256(name)][dnstype].hash == bytes20(keccak256(proof));\n }\n\n /**\n * @dev Validates a set of RRs.\n * @param rrset The RR set.\n * @param typecovered The type covered by the RRSIG record.\n */\n function validateRRs(RRUtils.SignedSet memory rrset, uint16 typecovered) internal pure returns (bytes memory name) {\n // Iterate over all the RRs\n for (RRUtils.RRIterator memory iter = rrset.rrs(); !iter.done(); iter.next()) {\n // We only support class IN (Internet)\n require(iter.class == DNSCLASS_IN);\n\n if(name.length == 0) {\n name = iter.name();\n } else {\n // Name must be the same on all RRs. We do things this way to avoid copying the name\n // repeatedly.\n require(name.length == iter.data.nameLength(iter.offset));\n require(name.equals(0, iter.data, iter.offset, name.length));\n }\n\n // o The RRSIG RR's Type Covered field MUST equal the RRset's type.\n require(iter.dnstype == typecovered);\n }\n }\n\n /**\n * @dev Performs signature verification.\n *\n * Throws or reverts if unable to verify the record.\n *\n * @param name The name of the RRSIG record, in DNS label-sequence format.\n * @param data The original data to verify.\n * @param proof A DS or DNSKEY record that's already verified by the oracle.\n */\n function verifySignature(bytes memory name, RRUtils.SignedSet memory rrset, RRSetWithSignature memory data, bytes memory proof) internal view {\n // o The RRSIG RR's Signer's Name field MUST be the name of the zone\n // that contains the RRset.\n require(rrset.signerName.length <= name.length);\n require(rrset.signerName.equals(0, name, name.length - rrset.signerName.length));\n\n RRUtils.RRIterator memory proofRR = proof.iterateRRs(0);\n // Check the proof\n if (proofRR.dnstype == DNSTYPE_DS) {\n require(verifyWithDS(rrset, data, proofRR));\n } else if (proofRR.dnstype == DNSTYPE_DNSKEY) {\n require(verifyWithKnownKey(rrset, data, proofRR));\n } else {\n revert(\"No valid proof found\");\n }\n }\n\n /**\n * @dev Attempts to verify a signed RRSET against an already known public key.\n * @param rrset The signed set to verify.\n * @param data The original data the signed set was read from.\n * @param proof The serialized DS or DNSKEY record to use as proof.\n * @return True if the RRSET could be verified, false otherwise.\n */\n function verifyWithKnownKey(RRUtils.SignedSet memory rrset, RRSetWithSignature memory data, RRUtils.RRIterator memory proof) internal view returns(bool) {\n // Check the DNSKEY's owner name matches the signer name on the RRSIG\n require(proof.name().equals(rrset.signerName));\n for(; !proof.done(); proof.next()) {\n require(proof.name().equals(rrset.signerName));\n bytes memory keyrdata = proof.rdata();\n RRUtils.DNSKEY memory dnskey = keyrdata.readDNSKEY(0, keyrdata.length);\n if(verifySignatureWithKey(dnskey, keyrdata, rrset, data)) {\n return true;\n }\n }\n }\n\n /**\n * @dev Attempts to verify some data using a provided key and a signature.\n * @param dnskey The dns key record to verify the signature with.\n * @param rrset The signed RRSET being verified.\n * @param data The original data `rrset` was decoded from.\n * @return True iff the key verifies the signature.\n */\n function verifySignatureWithKey(RRUtils.DNSKEY memory dnskey, bytes memory keyrdata, RRUtils.SignedSet memory rrset, RRSetWithSignature memory data)\n internal\n view\n returns (bool)\n {\n // TODO: Check key isn't expired, unless updating key itself\n\n // The Protocol Field MUST have value 3 (RFC4034 2.1.2)\n if(dnskey.protocol != 3) {\n return false;\n }\n\n // o The RRSIG RR's Signer's Name, Algorithm, and Key Tag fields MUST\n // match the owner name, algorithm, and key tag for some DNSKEY RR in\n // the zone's apex DNSKEY RRset.\n if(dnskey.algorithm != rrset.algorithm) {\n return false;\n }\n uint16 computedkeytag = computeKeytag(keyrdata);\n if (computedkeytag != rrset.keytag) {\n return false;\n }\n\n // o The matching DNSKEY RR MUST be present in the zone's apex DNSKEY\n // RRset, and MUST have the Zone Flag bit (DNSKEY RDATA Flag bit 7)\n // set.\n if (dnskey.flags & DNSKEY_FLAG_ZONEKEY == 0) {\n return false;\n }\n\n return algorithms[dnskey.algorithm].verify(keyrdata, data.rrset, data.sig);\n }\n\n /**\n * @dev Attempts to verify a signed RRSET against an already known hash. This function assumes\n * that the record \n * @param rrset The signed set to verify.\n * @param data The original data the signed set was read from.\n * @param proof The serialized DS or DNSKEY record to use as proof.\n * @return True if the RRSET could be verified, false otherwise.\n */\n function verifyWithDS(RRUtils.SignedSet memory rrset, RRSetWithSignature memory data, RRUtils.RRIterator memory proof) internal view returns(bool) {\n for(RRUtils.RRIterator memory iter = rrset.rrs(); !iter.done(); iter.next()) {\n require(iter.dnstype == DNSTYPE_DNSKEY);\n bytes memory keyrdata = iter.rdata();\n RRUtils.DNSKEY memory dnskey = keyrdata.readDNSKEY(0, keyrdata.length);\n if (verifySignatureWithKey(dnskey, keyrdata, rrset, data)) {\n // It's self-signed - look for a DS record to verify it.\n return verifyKeyWithDS(iter.name(), proof, dnskey, keyrdata);\n }\n }\n return false;\n }\n\n /**\n * @dev Attempts to verify a key using DS records.\n * @param keyname The DNS name of the key, in DNS label-sequence format.\n * @param dsrrs The DS records to use in verification.\n * @param dnskey The dnskey to verify.\n * @param keyrdata The RDATA section of the key.\n * @return True if a DS record verifies this key.\n */\n function verifyKeyWithDS(bytes memory keyname, RRUtils.RRIterator memory dsrrs, RRUtils.DNSKEY memory dnskey, bytes memory keyrdata)\n internal view returns (bool)\n {\n uint16 keytag = computeKeytag(keyrdata);\n for (; !dsrrs.done(); dsrrs.next()) {\n bytes memory rdata = dsrrs.rdata();\n RRUtils.DS memory ds = dsrrs.data.readDS(dsrrs.rdataOffset, dsrrs.nextOffset - dsrrs.rdataOffset);\n if(ds.keytag != keytag) {\n continue;\n }\n if (ds.algorithm != dnskey.algorithm) {\n continue;\n }\n\n Buffer.buffer memory buf;\n buf.init(keyname.length + keyrdata.length);\n buf.append(keyname);\n buf.append(keyrdata);\n if (verifyDSHash(ds.digestType, buf.buf, ds.digest)) {\n return true;\n }\n }\n return false;\n }\n\n /**\n * @dev Attempts to verify a DS record's hash value against some data.\n * @param digesttype The digest ID from the DS record.\n * @param data The data to digest.\n * @param digest The digest data to check against.\n * @return True iff the digest matches.\n */\n function verifyDSHash(uint8 digesttype, bytes memory data, bytes memory digest) internal view returns (bool) {\n if (address(digests[digesttype]) == address(0)) {\n return false;\n }\n return digests[digesttype].verify(data, digest);\n }\n\n /**\n * @dev Computes the keytag for a chunk of data.\n * @param data The data to compute a keytag for.\n * @return The computed key tag.\n */\n function computeKeytag(bytes memory data) internal pure returns (uint16) {\n uint ac;\n for (uint i = 0; i < data.length; i++) {\n ac += i & 1 == 0 ? uint16(data.readUint8(i)) << 8 : data.readUint8(i);\n }\n return uint16(ac + (ac >> 16));\n }\n}\n", "sourcePath": "/home/arachnid/Dropbox/projects/enssec/contracts/DNSSECImpl.sol", "ast": { "absolutePath": "/home/arachnid/Dropbox/projects/enssec/contracts/DNSSECImpl.sol", "exportedSymbols": { "Algorithm": [ 3863 ], "Buffer": [ 6432 ], "BytesUtils": [ 730 ], "DNSSEC": [ 820 ], "DNSSECImpl": [ 2629 ], "Digest": [ 5741 ], "NSEC3Digest": [ 5847 ], "Owned": [ 2724 ], "RRUtils": [ 3847 ] }, "id": 2630, "nodeType": "SourceUnit", "nodes": [ { "id": 822, "literals": [ "solidity", "^", "0.7", ".4" ], "nodeType": "PragmaDirective", "src": "0:23:2" }, { "id": 823, "literals": [ "experimental", "ABIEncoderV2" ], "nodeType": "PragmaDirective", "src": "24:33:2" }, { "absolutePath": "/home/arachnid/Dropbox/projects/enssec/contracts/Owned.sol", "file": "./Owned.sol", "id": 824, "nodeType": "ImportDirective", "scope": 2630, "sourceUnit": 2725, "src": "59:21:2", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/home/arachnid/Dropbox/projects/enssec/contracts/BytesUtils.sol", "file": "./BytesUtils.sol", "id": 825, "nodeType": "ImportDirective", "scope": 2630, "sourceUnit": 731, "src": "81:26:2", 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"192:30:2", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/home/arachnid/Dropbox/projects/enssec/contracts/nsec3digests/NSEC3Digest.sol", "file": "./nsec3digests/NSEC3Digest.sol", "id": 830, "nodeType": "ImportDirective", "scope": 2630, "sourceUnit": 5848, "src": "223:40:2", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@ensdomains/buffer/contracts/Buffer.sol", "file": "@ensdomains/buffer/contracts/Buffer.sol", "id": 831, "nodeType": "ImportDirective", "scope": 2630, "sourceUnit": 6433, "src": "264:49:2", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [ { "baseName": { "id": 832, "name": "DNSSEC", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 820, "src": "465:6:2", "typeDescriptions": { "typeIdentifier": "t_contract$_DNSSEC_$820", "typeString": "contract DNSSEC" } }, "id": 833, "nodeType": "InheritanceSpecifier", "src": "465:6:2" }, { "baseName": { "id": 834, "name": "Owned", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 2724, "src": "473:5:2", "typeDescriptions": { "typeIdentifier": "t_contract$_Owned_$2724", "typeString": "contract Owned" } }, "id": 835, "nodeType": "InheritanceSpecifier", "src": "473:5:2" } ], "contractDependencies": [ 820, 2724 ], "contractKind": "contract", "fullyImplemented": true, "id": 2629, "linearizedBaseContracts": [ 2629, 2724, 820 ], "name": "DNSSECImpl", "nodeType": "ContractDefinition", "nodes": [ { "id": 838, "libraryName": { "id": 836, "name": "Buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 6432, "src": "491:6:2", "typeDescriptions": { "typeIdentifier": "t_contract$_Buffer_$6432", "typeString": "library Buffer" } }, "nodeType": "UsingForDirective", "src": "485:31:2", "typeName": { "id": 837, "name": "Buffer.buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "502:13:2", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } } }, { 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an NSEC3 digest algorithm.\n Callable only by the owner.\n @param id The digest ID\n @param digest The address of the digest contract." }, "functionSelector": "8438dc04", "id": 1027, "implemented": true, "kind": "function", "modifiers": [ { "id": 1010, "modifierName": { "id": 1009, "name": "owner_only", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2702, "src": "3051:10:2", "typeDescriptions": { "typeIdentifier": "t_modifier$__$", "typeString": "modifier ()" } }, "nodeType": "ModifierInvocation", "src": "3051:10:2" } ], "name": "setNSEC3Digest", "nodeType": "FunctionDefinition", "parameters": { "id": 1008, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1005, "mutability": "mutable", "name": "id", "nodeType": "VariableDeclaration", "scope": 1027, "src": "3014:8:2", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 1004, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "3014:5:2", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" }, { "constant": false, "id": 1007, "mutability": "mutable", "name": "digest", "nodeType": "VariableDeclaration", "scope": 1027, "src": "3024:18:2", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_NSEC3Digest_$5847", "typeString": "contract NSEC3Digest" }, "typeName": { "id": 1006, "name": "NSEC3Digest", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5847, "src": "3024:11:2", "typeDescriptions": { "typeIdentifier": "t_contract$_NSEC3Digest_$5847", "typeString": "contract NSEC3Digest" } }, "visibility": "internal" } ], "src": "3013:30:2" }, "returnParameters": { "id": 1011, "nodeType": "ParameterList", "parameters": [], "src": "3062:0:2" }, "scope": 2629, "src": "2990:168:2", "stateMutability": "nonpayable", "virtual": false, "visibility": "public" }, { "baseFunctions": [ 773 ], "body": { "id": 1110, "nodeType": "Block", "src": "3596:478:2", "statements": [ { "assignments": [ 1039 ], "declarations": [ { "constant": false, "id": 1039, "mutability": "mutable", "name": "offset", "nodeType": "VariableDeclaration", "scope": 1110, "src": "3606:11:2", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1038, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3606:4:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 1041, "initialValue": { "hexValue": "30", "id": 1040, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3620:1:2", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "3606:15:2" }, { "assignments": [ 1043 ], "declarations": [ { "constant": false, "id": 1043, "mutability": "mutable", "name": "proof", "nodeType": "VariableDeclaration", "scope": 1110, "src": "3631:18:2", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1042, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3631:5:2", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "id": 1045, "initialValue": { "id": 1044, "name": "_proof", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1032, "src": "3652:6:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "VariableDeclarationStatement", "src": "3631:27:2" }, { "body": { "id": 1106, "nodeType": "Block", "src": "3696:350:2", "statements": [ { "assignments": [ 1051 ], "declarations": [ { "constant": false, "id": 1051, "mutability": "mutable", "name": "input", "nodeType": "VariableDeclaration", "scope": 1106, "src": "3710:31:2", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature" }, "typeName": { "id": 1050, "name": "RRSetWithSignature", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 740, "src": "3710:18:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_storage_ptr", "typeString": "struct DNSSEC.RRSetWithSignature" } }, "visibility": "internal" } ], "id": 1052, "nodeType": "VariableDeclarationStatement", "src": "3710:31:2" }, { "expression": { "id": 1066, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "expression": { "id": 1053, "name": "input", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1051, "src": "3755:5:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature memory" } }, "id": 1055, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "rrset", "nodeType": "MemberAccess", "referencedDeclaration": 737, "src": "3755:11:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1060, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1058, "name": "offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1039, "src": "3784:6:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "hexValue": "32", "id": 1059, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3793:1:2", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "3784:10:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "arguments": [ { "id": 1063, "name": "offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1039, "src": "3812:6:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 1061, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1030, "src": "3796:4:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1062, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "readUint16", "nodeType": "MemberAccess", "referencedDeclaration": 331, "src": "3796:15:2", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_uint16_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,uint256) pure returns (uint16)" } }, "id": 1064, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3796:23:2", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint16", "typeString": "uint16" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint16", "typeString": "uint16" } ], "expression": { "id": 1056, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1030, "src": "3769:4:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1057, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "substring", "nodeType": "MemberAccess", "referencedDeclaration": 502, "src": "3769:14:2", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_uint256_$_t_uint256_$returns$_t_bytes_memory_ptr_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,uint256,uint256) pure returns (bytes memory)" } }, "id": 1065, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3769:51:2", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "src": "3755:65:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1067, "nodeType": "ExpressionStatement", "src": "3755:65:2" }, { "expression": { "id": 1074, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 1068, "name": "offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1039, "src": "3834:6:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1073, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "expression": { "id": 1069, "name": "input", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1051, "src": "3844:5:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature memory" } }, "id": 1070, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "rrset", "nodeType": "MemberAccess", "referencedDeclaration": 737, "src": "3844:11:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1071, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "3844:18:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "hexValue": "32", "id": 1072, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3865:1:2", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "3844:22:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3834:32:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1075, "nodeType": "ExpressionStatement", "src": "3834:32:2" }, { "expression": { "id": 1089, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "expression": { "id": 1076, "name": "input", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1051, "src": "3880:5:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature memory" } }, "id": 1078, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "sig", "nodeType": "MemberAccess", "referencedDeclaration": 739, "src": "3880:9:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1083, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1081, "name": "offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1039, "src": "3907:6:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "hexValue": "32", "id": 1082, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3916:1:2", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "3907:10:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "arguments": [ { "id": 1086, "name": "offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1039, "src": "3935:6:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 1084, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1030, "src": "3919:4:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1085, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "readUint16", "nodeType": "MemberAccess", "referencedDeclaration": 331, "src": "3919:15:2", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_uint16_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,uint256) pure returns (uint16)" } }, "id": 1087, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3919:23:2", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint16", "typeString": "uint16" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint16", "typeString": "uint16" } ], "expression": { "id": 1079, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1030, "src": "3892:4:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1080, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "substring", "nodeType": "MemberAccess", "referencedDeclaration": 502, "src": "3892:14:2", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_uint256_$_t_uint256_$returns$_t_bytes_memory_ptr_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,uint256,uint256) pure returns (bytes memory)" } }, "id": 1088, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3892:51:2", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "src": "3880:63:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1090, "nodeType": "ExpressionStatement", "src": "3880:63:2" }, { "expression": { "id": 1097, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 1091, "name": "offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1039, "src": "3957:6:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1096, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "expression": { "id": 1092, "name": "input", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1051, "src": "3967:5:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature memory" } }, "id": 1093, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "sig", "nodeType": "MemberAccess", "referencedDeclaration": 739, "src": "3967:9:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1094, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "3967:16:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "hexValue": "32", "id": 1095, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3986:1:2", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "3967:20:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3957:30:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1098, "nodeType": "ExpressionStatement", "src": "3957:30:2" }, { "expression": { "id": 1104, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 1099, "name": "proof", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1043, "src": "4001:5:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "arguments": [ { "id": 1101, "name": "input", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1051, "src": "4022:5:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature memory" } }, { "id": 1102, "name": "proof", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1043, "src": "4029:5:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature memory" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 1100, "name": "_submitRRSet", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1933, "src": "4009:12:2", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_RRSetWithSignature_$740_memory_ptr_$_t_bytes_memory_ptr_$returns$_t_bytes_memory_ptr_$", "typeString": "function (struct DNSSEC.RRSetWithSignature memory,bytes memory) returns (bytes memory)" } }, "id": 1103, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4009:26:2", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "src": "4001:34:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1105, "nodeType": "ExpressionStatement", "src": "4001:34:2" } ] }, "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1049, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1046, "name": "offset", "nodeType": "Identifier", 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This is in the format described in section\n 5.3.2 of RFC4035: The RRDATA section from the RRSIG without the signature\n data, followed by a series of canonicalised RR records that the signature\n applies to.\n @param proof The DNSKEY or DS to validate the signature against. 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This is in the format described in section\n 5.3.2 of RFC4035: The RRDATA section from the RRSIG without the signature\n data, followed by a series of canonicalised RR records that the signature\n applies to." }, "functionSelector": "2c095cbb", "id": 1219, "implemented": true, "kind": "function", "modifiers": [], "name": "deleteRRSet", "nodeType": "FunctionDefinition", "overrides": { "id": 1139, "nodeType": "OverrideSpecifier", "overrides": [], "src": "5574:8:2" }, "parameters": { "id": 1138, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1131, "mutability": "mutable", "name": "deleteType", "nodeType": "VariableDeclaration", "scope": 1219, "src": "5463:17:2", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint16", "typeString": "uint16" }, "typeName": { "id": 1130, "name": "uint16", "nodeType": "ElementaryTypeName", "src": "5463:6:2", "typeDescriptions": { "typeIdentifier": "t_uint16", "typeString": "uint16" } 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"t_uint16", "typeString": "uint16" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "11058:41:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSet_$886_storage", "typeString": "struct DNSSECImpl.RRSet storage ref" } }, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1436, "nodeType": "ExpressionStatement", "src": "11051:48:2" } ] } } ] }, "documentation": { "id": 1316, "nodeType": "StructuredDocumentation", "src": "8157:1552:2", "text": " @dev Deletes an RR from the oracle using an NSEC3 proof.\n Deleting a record using NSEC3 requires using up to two NSEC3 records. There are two cases:\n 1. The name exists, but the record type doesn't. Eg, example.com has A records but no TXT records.\n 2. The name does not exist, but a parent name does.\n In the first case, we submit one NSEC3 proof in `closestEncloser` that matches the target name\n but does not have the bit for `deleteType` set in its type bitmap. In the second case, we submit\n two proofs: closestEncloser and nextClosest, that together prove that the name does not exist.\n NSEC3 records are in the format described in section 5.3.2 of RFC4035: The RRDATA section\n from the RRSIG without the signature data, followed by a series of canonicalised RR records\n that the signature applies to.\n @param deleteType The DNS record type to delete.\n @param deleteName The name to delete.\n @param closestEncloser An NSEC3 proof matching the closest enclosing name - that is,\n the nearest ancestor of the target name that *does* exist.\n @param nextClosest An NSEC3 proof covering the next closest name. This proves that the immediate\n subdomain of the closestEncloser does not exist.\n @param dnskey An encoded DNSKEY record that has already been submitted to the oracle and can be used\n to verify the signatures closestEncloserSig and nextClosestSig" }, "functionSelector": "0b1a2495", "id": 1467, "implemented": true, "kind": "function", "modifiers": [], "name": "deleteRRSetNSEC3", "nodeType": "FunctionDefinition", "overrides": { "id": 1328, "nodeType": "OverrideSpecifier", "overrides": [], "src": "9902:8:2" }, "parameters": { "id": 1327, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1318, "mutability": "mutable", "name": "deleteType", "nodeType": "VariableDeclaration", "scope": 1467, "src": "9740:17:2", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint16", "typeString": "uint16" }, "typeName": { "id": 1317, "name": "uint16", "nodeType": "ElementaryTypeName", "src": "9740:6:2", "typeDescriptions": { 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"src": "24502:513:2" }, { "expression": { "hexValue": "66616c7365", "id": 2423, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "25031:5:2", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" }, "functionReturnParameters": 2363, "id": 2424, "nodeType": "Return", "src": "25024:12:2" } ] }, "documentation": { "id": 2353, "nodeType": "StructuredDocumentation", "src": "23947:393:2", "text": " @dev Attempts to verify a signed RRSET against an already known hash. This function assumes\n that the record \n @param rrset The signed set to verify.\n @param data The original data the signed set was read from.\n @param proof The serialized DS or DNSKEY record to use as proof.\n @return True if the RRSET could be verified, false otherwise." }, "id": 2426, "implemented": true, "kind": "function", "modifiers": [], "name": "verifyWithDS", "nodeType": "FunctionDefinition", "parameters": { "id": 2360, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2355, "mutability": "mutable", "name": "rrset", "nodeType": "VariableDeclaration", "scope": 2426, "src": "24367:30:2", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_SignedSet_$2900_memory_ptr", "typeString": "struct RRUtils.SignedSet" }, "typeName": { "id": 2354, "name": "RRUtils.SignedSet", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 2900, "src": "24367:17:2", "typeDescriptions": { "typeIdentifier": 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DNS name of the key, in DNS label-sequence format.\n @param dsrrs The DS records to use in verification.\n @param dnskey The dnskey to verify.\n @param keyrdata The RDATA section of the key.\n @return True if a DS record verifies this key." }, "id": 2535, "implemented": true, "kind": "function", "modifiers": [], "name": "verifyKeyWithDS", "nodeType": "FunctionDefinition", "parameters": { "id": 2436, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2429, "mutability": "mutable", "name": "keyname", "nodeType": "VariableDeclaration", "scope": 2535, "src": "25431:20:2", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 2428, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "25431:5:2", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" }, { "constant": false, "id": 2431, "mutability": 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"t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 1041, "initialValue": { "hexValue": "30", "id": 1040, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3620:1:2", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "3606:15:2" }, { "assignments": [ 1043 ], "declarations": [ { "constant": false, "id": 1043, "mutability": "mutable", "name": "proof", "nodeType": "VariableDeclaration", "scope": 1110, "src": "3631:18:2", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1042, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3631:5:2", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "id": 1045, "initialValue": { "id": 1044, "name": "_proof", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1032, "src": "3652:6:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "VariableDeclarationStatement", "src": "3631:27:2" }, { "body": { "id": 1106, "nodeType": "Block", "src": "3696:350:2", "statements": [ { "assignments": [ 1051 ], "declarations": [ { "constant": false, "id": 1051, "mutability": "mutable", "name": "input", "nodeType": "VariableDeclaration", "scope": 1106, "src": "3710:31:2", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature" }, "typeName": { "id": 1050, "name": "RRSetWithSignature", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 740, "src": "3710:18:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_storage_ptr", "typeString": "struct DNSSEC.RRSetWithSignature" } }, "visibility": "internal" } ], "id": 1052, "nodeType": "VariableDeclarationStatement", "src": "3710:31:2" }, { "expression": { "id": 1066, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "expression": { "id": 1053, "name": "input", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1051, "src": "3755:5:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature memory" } }, "id": 1055, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "rrset", "nodeType": "MemberAccess", "referencedDeclaration": 737, "src": "3755:11:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1060, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1058, "name": "offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1039, "src": "3784:6:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "hexValue": "32", "id": 1059, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3793:1:2", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "3784:10:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "arguments": [ { "id": 1063, "name": "offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1039, "src": "3812:6:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 1061, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1030, "src": "3796:4:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1062, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "readUint16", "nodeType": "MemberAccess", "referencedDeclaration": 331, "src": "3796:15:2", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_uint16_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,uint256) pure returns (uint16)" } }, "id": 1064, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3796:23:2", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint16", "typeString": "uint16" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint16", "typeString": "uint16" } ], "expression": { "id": 1056, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1030, "src": "3769:4:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1057, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "substring", "nodeType": "MemberAccess", "referencedDeclaration": 502, "src": "3769:14:2", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_uint256_$_t_uint256_$returns$_t_bytes_memory_ptr_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,uint256,uint256) pure returns (bytes memory)" } }, "id": 1065, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3769:51:2", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "src": "3755:65:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1067, "nodeType": "ExpressionStatement", "src": "3755:65:2" }, { "expression": { "id": 1074, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 1068, "name": "offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1039, "src": "3834:6:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1073, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "expression": { "id": 1069, "name": "input", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1051, "src": "3844:5:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature memory" } }, "id": 1070, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "rrset", "nodeType": "MemberAccess", "referencedDeclaration": 737, "src": "3844:11:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1071, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "3844:18:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "hexValue": "32", "id": 1072, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3865:1:2", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "3844:22:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3834:32:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1075, "nodeType": "ExpressionStatement", "src": "3834:32:2" }, { "expression": { "id": 1089, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "expression": { "id": 1076, "name": "input", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1051, "src": "3880:5:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature memory" } }, "id": 1078, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "sig", "nodeType": "MemberAccess", "referencedDeclaration": 739, "src": "3880:9:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1083, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1081, "name": "offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1039, "src": "3907:6:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "hexValue": "32", "id": 1082, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3916:1:2", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "3907:10:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "arguments": [ { "id": 1086, "name": "offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1039, "src": "3935:6:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 1084, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1030, "src": "3919:4:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1085, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "readUint16", "nodeType": "MemberAccess", "referencedDeclaration": 331, "src": "3919:15:2", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_uint16_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,uint256) pure returns (uint16)" } }, "id": 1087, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3919:23:2", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint16", "typeString": "uint16" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint16", "typeString": "uint16" } ], "expression": { "id": 1079, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1030, "src": "3892:4:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1080, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "substring", "nodeType": "MemberAccess", "referencedDeclaration": 502, "src": "3892:14:2", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes_memory_ptr_$_t_uint256_$_t_uint256_$returns$_t_bytes_memory_ptr_$bound_to$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory,uint256,uint256) pure returns (bytes memory)" } }, "id": 1088, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3892:51:2", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "src": "3880:63:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1090, "nodeType": "ExpressionStatement", "src": "3880:63:2" }, { "expression": { "id": 1097, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 1091, "name": "offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1039, "src": "3957:6:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1096, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "expression": { "id": 1092, "name": "input", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1051, "src": "3967:5:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature memory" } }, "id": 1093, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "sig", "nodeType": "MemberAccess", "referencedDeclaration": 739, "src": "3967:9:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1094, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "3967:16:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "hexValue": "32", "id": 1095, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3986:1:2", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "3967:20:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3957:30:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1098, "nodeType": "ExpressionStatement", "src": "3957:30:2" }, { "expression": { "id": 1104, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 1099, "name": "proof", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1043, "src": "4001:5:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "arguments": [ { "id": 1101, "name": "input", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1051, "src": "4022:5:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature memory" } }, { "id": 1102, "name": "proof", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1043, "src": "4029:5:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature memory" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 1100, "name": "_submitRRSet", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1933, "src": "4009:12:2", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_RRSetWithSignature_$740_memory_ptr_$_t_bytes_memory_ptr_$returns$_t_bytes_memory_ptr_$", "typeString": "function (struct DNSSEC.RRSetWithSignature memory,bytes memory) returns (bytes memory)" } }, "id": 1103, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4009:26:2", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "src": "4001:34:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1105, "nodeType": "ExpressionStatement", "src": "4001:34:2" } ] }, "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1049, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1046, "name": "offset", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1039, "src": "3674:6:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "expression": { "id": 1047, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1030, "src": "3683:4:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1048, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "3683:11:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3674:20:2", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1107, "nodeType": "WhileStatement", "src": "3668:378:2" }, { "expression": { "id": 1108, "name": "proof", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1043, "src": "4062:5:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "functionReturnParameters": 1037, "id": 1109, "nodeType": "Return", "src": "4055:12:2" } ] }, "documentation": { "id": 1028, "nodeType": "StructuredDocumentation", "src": "3164:326:2", "text": " @dev Submits multiple RRSets\n @param data The data to submit, as a series of chunks. Each chunk is\n in the format \n @param _proof The DNSKEY or DS to validate the first signature against.\n @return The last RRSET submitted." }, "functionSelector": "76a14d1d", "id": 1111, "implemented": true, "kind": "function", "modifiers": [], "name": "submitRRSets", "nodeType": "FunctionDefinition", "overrides": { "id": 1034, "nodeType": "OverrideSpecifier", "overrides": [], "src": "3564:8:2" }, "parameters": { "id": 1033, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1030, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 1111, "src": "3517:17:2", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1029, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3517:5:2", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" }, { "constant": false, "id": 1032, "mutability": "mutable", "name": "_proof", "nodeType": "VariableDeclaration", "scope": 1111, "src": "3536:19:2", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1031, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3536:5:2", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "3516:40:2" }, "returnParameters": { "id": 1037, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1036, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 1111, "src": "3582:12:2", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1035, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3582:5:2", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "3581:14:2" }, "scope": 2629, "src": "3495:579:2", "stateMutability": "nonpayable", "virtual": false, "visibility": "public" }, { "baseFunctions": [ 782 ], "body": { "id": 1127, "nodeType": "Block", "src": "4927:50:2", "statements": [ { "expression": { "arguments": [ { "id": 1123, "name": "input", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1114, "src": "4957:5:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature memory" } }, { "id": 1124, "name": "proof", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1116, "src": "4964:5:2", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature memory" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 1122, "name": "_submitRRSet", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1933, "src": "4944:12:2", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_struct$_RRSetWithSignature_$740_memory_ptr_$_t_bytes_memory_ptr_$returns$_t_bytes_memory_ptr_$", "typeString": "function (struct DNSSEC.RRSetWithSignature memory,bytes memory) returns (bytes memory)" } }, "id": 1125, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4944:26:2", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "functionReturnParameters": 1121, "id": 1126, "nodeType": "Return", "src": "4937:33:2" } ] }, "documentation": { "id": 1112, "nodeType": "StructuredDocumentation", "src": "4080:709:2", "text": " @dev Submits a signed set of RRs to the oracle.\n RRSETs are only accepted if they are signed with a key that is already\n trusted, or if they are self-signed, and the signing key is identified by\n a DS record that is already trusted.\n @param input The signed RR set. This is in the format described in section\n 5.3.2 of RFC4035: The RRDATA section from the RRSIG without the signature\n data, followed by a series of canonicalised RR records that the signature\n applies to.\n @param proof The DNSKEY or DS to validate the signature against. Must Already\n have been submitted and proved previously." }, "functionSelector": "d7b82ebe", "id": 1128, "implemented": true, "kind": "function", "modifiers": [], "name": "submitRRSet", "nodeType": "FunctionDefinition", "overrides": { "id": 1118, "nodeType": "OverrideSpecifier", "overrides": [], "src": "4883:8:2" }, "parameters": { "id": 1117, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1114, "mutability": "mutable", "name": "input", "nodeType": "VariableDeclaration", "scope": 1128, "src": "4815:31:2", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_memory_ptr", "typeString": "struct DNSSEC.RRSetWithSignature" }, "typeName": { "id": 1113, "name": "RRSetWithSignature", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 740, "src": "4815:18:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSetWithSignature_$740_storage_ptr", "typeString": "struct 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This is in the format described in section\n 5.3.2 of RFC4035: The RRDATA section from the RRSIG without the signature\n data, followed by a series of canonicalised RR records that the signature\n applies to." }, "functionSelector": "2c095cbb", "id": 1219, "implemented": true, "kind": "function", "modifiers": [], "name": "deleteRRSet", "nodeType": "FunctionDefinition", "overrides": { "id": 1139, "nodeType": "OverrideSpecifier", "overrides": [], "src": "5574:8:2" }, "parameters": { "id": 1138, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1131, "mutability": "mutable", "name": "deleteType", "nodeType": "VariableDeclaration", "scope": 1219, "src": "5463:17:2", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint16", "typeString": "uint16" }, "typeName": { "id": 1130, "name": "uint16", "nodeType": "ElementaryTypeName", "src": "5463:6:2", "typeDescriptions": { "typeIdentifier": "t_uint16", "typeString": "uint16" } 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"t_uint16", "typeString": "uint16" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "11058:41:2", "typeDescriptions": { "typeIdentifier": "t_struct$_RRSet_$886_storage", "typeString": "struct DNSSECImpl.RRSet storage ref" } }, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 1436, "nodeType": "ExpressionStatement", "src": "11051:48:2" } ] } } ] }, "documentation": { "id": 1316, "nodeType": "StructuredDocumentation", "src": "8157:1552:2", "text": " @dev Deletes an RR from the oracle using an NSEC3 proof.\n Deleting a record using NSEC3 requires using up to two NSEC3 records. There are two cases:\n 1. The name exists, but the record type doesn't. Eg, example.com has A records but no TXT records.\n 2. The name does not exist, but a parent name does.\n In the first case, we submit one NSEC3 proof in `closestEncloser` that matches the target name\n but does not have the bit for `deleteType` set in its type bitmap. In the second case, we submit\n two proofs: closestEncloser and nextClosest, that together prove that the name does not exist.\n NSEC3 records are in the format described in section 5.3.2 of RFC4035: The RRDATA section\n from the RRSIG without the signature data, followed by a series of canonicalised RR records\n that the signature applies to.\n @param deleteType The DNS record type to delete.\n @param deleteName The name to delete.\n @param closestEncloser An NSEC3 proof matching the closest enclosing name - that is,\n the nearest ancestor of the target name that *does* exist.\n @param nextClosest An NSEC3 proof covering the next closest name. This proves that the immediate\n subdomain of the closestEncloser does not exist.\n @param dnskey An encoded DNSKEY record that has already been submitted to the oracle and can be used\n to verify the signatures closestEncloserSig and nextClosestSig" }, "functionSelector": "0b1a2495", "id": 1467, "implemented": true, "kind": "function", "modifiers": [], "name": "deleteRRSetNSEC3", "nodeType": "FunctionDefinition", "overrides": { "id": 1328, "nodeType": "OverrideSpecifier", "overrides": [], "src": "9902:8:2" }, "parameters": { "id": 1327, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1318, "mutability": "mutable", "name": "deleteType", "nodeType": "VariableDeclaration", "scope": 1467, "src": "9740:17:2", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint16", "typeString": "uint16" }, "typeName": { "id": 1317, "name": "uint16", "nodeType": "ElementaryTypeName", "src": "9740:6:2", "typeDescriptions": { 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"src": "24502:513:2" }, { "expression": { "hexValue": "66616c7365", "id": 2423, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "25031:5:2", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" }, "functionReturnParameters": 2363, "id": 2424, "nodeType": "Return", "src": "25024:12:2" } ] }, "documentation": { "id": 2353, "nodeType": "StructuredDocumentation", "src": "23947:393:2", "text": " @dev Attempts to verify a signed RRSET against an already known hash. This function assumes\n that the record \n @param rrset The signed set to verify.\n @param data The original data the signed set was read from.\n @param proof The serialized DS or DNSKEY record to use as proof.\n @return True if the RRSET could be verified, false otherwise." }, "id": 2426, "implemented": true, "kind": "function", "modifiers": [], "name": "verifyWithDS", "nodeType": "FunctionDefinition", "parameters": { "id": 2360, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2355, "mutability": "mutable", "name": "rrset", "nodeType": "VariableDeclaration", "scope": 2426, "src": "24367:30:2", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_SignedSet_$2900_memory_ptr", "typeString": "struct RRUtils.SignedSet" }, "typeName": { "id": 2354, "name": "RRUtils.SignedSet", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 2900, "src": "24367:17:2", "typeDescriptions": { "typeIdentifier": 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DNS name of the key, in DNS label-sequence format.\n @param dsrrs The DS records to use in verification.\n @param dnskey The dnskey to verify.\n @param keyrdata The RDATA section of the key.\n @return True if a DS record verifies this key." }, "id": 2535, "implemented": true, "kind": "function", "modifiers": [], "name": "verifyKeyWithDS", "nodeType": "FunctionDefinition", "parameters": { "id": 2436, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2429, "mutability": "mutable", "name": "keyname", "nodeType": "VariableDeclaration", "scope": 2535, "src": "25431:20:2", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 2428, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "25431:5:2", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" }, { "constant": false, "id": 2431, "mutability": 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This is in the format described in section 5.3.2 of RFC4035: The RRDATA section from the RRSIG without the signature data, followed by a series of canonicalised RR records that the signature applies to." } }, "deleteRRSetNSEC3(uint16,bytes,(bytes,bytes),(bytes,bytes),bytes)": { "details": "Deletes an RR from the oracle using an NSEC3 proof. Deleting a record using NSEC3 requires using up to two NSEC3 records. There are two cases: 1. The name exists, but the record type doesn't. Eg, example.com has A records but no TXT records. 2. The name does not exist, but a parent name does. In the first case, we submit one NSEC3 proof in `closestEncloser` that matches the target name but does not have the bit for `deleteType` set in its type bitmap. In the second case, we submit two proofs: closestEncloser and nextClosest, that together prove that the name does not exist. NSEC3 records are in the format described in section 5.3.2 of RFC4035: The RRDATA section from the RRSIG without the signature data, followed by a series of canonicalised RR records that the signature applies to.", "params": { "closestEncloser": "An NSEC3 proof matching the closest enclosing name - that is, the nearest ancestor of the target name that *does* exist.", "deleteName": "The name to delete.", "deleteType": "The DNS record type to delete.", "dnskey": "An encoded DNSKEY record that has already been submitted to the oracle and can be used to verify the signatures closestEncloserSig and nextClosestSig", "nextClosest": "An NSEC3 proof covering the next closest name. This proves that the immediate subdomain of the closestEncloser does not exist." } }, "rrdata(uint16,bytes)": { "details": "Returns data about the RRs (if any) known to this oracle with the provided type and name.", "params": { "dnstype": "The DNS record type to query.", "name": "The name to query, in DNS label-sequence format." }, "returns": { "_0": "inception The unix timestamp at which the signature for this RRSET was created.", "_1": "inserted The unix timestamp at which this RRSET was inserted into the oracle.", "_2": "hash The hash of the RRset that was inserted." } }, "setAlgorithm(uint8,address)": { "details": "Sets the contract address for a signature verification algorithm. Callable only by the owner.", "params": { "algo": "The address of the algorithm contract.", "id": "The algorithm ID" } }, "setDigest(uint8,address)": { "details": "Sets the contract address for a digest verification algorithm. Callable only by the owner.", "params": { "digest": "The address of the digest contract.", "id": "The digest ID" } }, "setNSEC3Digest(uint8,address)": { "details": "Sets the contract address for an NSEC3 digest algorithm. Callable only by the owner.", "params": { "digest": "The address of the digest contract.", "id": "The digest ID" } }, "submitRRSet((bytes,bytes),bytes)": { "details": "Submits a signed set of RRs to the oracle. RRSETs are only accepted if they are signed with a key that is already trusted, or if they are self-signed, and the signing key is identified by a DS record that is already trusted.", "params": { "input": "The signed RR set. This is in the format described in section 5.3.2 of RFC4035: The RRDATA section from the RRSIG without the signature data, followed by a series of canonicalised RR records that the signature applies to.", "proof": "The DNSKEY or DS to validate the signature against. 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