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Diffstat (limited to 'contracts/ens/fallback_contract/PublicResolver.sol')
-rw-r--r-- | contracts/ens/fallback_contract/PublicResolver.sol | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/contracts/ens/fallback_contract/PublicResolver.sol b/contracts/ens/fallback_contract/PublicResolver.sol new file mode 100644 index 000000000..9dcc95689 --- /dev/null +++ b/contracts/ens/fallback_contract/PublicResolver.sol @@ -0,0 +1,212 @@ +pragma solidity ^0.4.0; + +import './AbstractENS.sol'; + +/** + * A simple resolver anyone can use; only allows the owner of a node to set its + * address. + */ +contract PublicResolver { + bytes4 constant INTERFACE_META_ID = 0x01ffc9a7; + bytes4 constant ADDR_INTERFACE_ID = 0x3b3b57de; + bytes4 constant CONTENT_INTERFACE_ID = 0xd8389dc5; + bytes4 constant NAME_INTERFACE_ID = 0x691f3431; + bytes4 constant ABI_INTERFACE_ID = 0x2203ab56; + bytes4 constant PUBKEY_INTERFACE_ID = 0xc8690233; + bytes4 constant TEXT_INTERFACE_ID = 0x59d1d43c; + + event AddrChanged(bytes32 indexed node, address a); + event ContentChanged(bytes32 indexed node, bytes32 hash); + event NameChanged(bytes32 indexed node, string name); + event ABIChanged(bytes32 indexed node, uint256 indexed contentType); + event PubkeyChanged(bytes32 indexed node, bytes32 x, bytes32 y); + event TextChanged(bytes32 indexed node, string indexed indexedKey, string key); + + struct PublicKey { + bytes32 x; + bytes32 y; + } + + struct Record { + address addr; + bytes32 content; + string name; + PublicKey pubkey; + mapping(string=>string) text; + mapping(uint256=>bytes) abis; + } + + AbstractENS ens; + mapping(bytes32=>Record) records; + + modifier only_owner(bytes32 node) { + if (ens.owner(node) != msg.sender) throw; + _; + } + + /** + * Constructor. + * @param ensAddr The ENS registrar contract. + */ + function PublicResolver(AbstractENS ensAddr) { + ens = ensAddr; + } + + /** + * Returns true if the resolver implements the interface specified by the provided hash. + * @param interfaceID The ID of the interface to check for. + * @return True if the contract implements the requested interface. + */ + function supportsInterface(bytes4 interfaceID) constant returns (bool) { + return interfaceID == ADDR_INTERFACE_ID || + interfaceID == CONTENT_INTERFACE_ID || + interfaceID == NAME_INTERFACE_ID || + interfaceID == ABI_INTERFACE_ID || + interfaceID == PUBKEY_INTERFACE_ID || + interfaceID == TEXT_INTERFACE_ID || + interfaceID == INTERFACE_META_ID; + } + + /** + * Returns the address associated with an ENS node. + * @param node The ENS node to query. + * @return The associated address. + */ + function addr(bytes32 node) constant returns (address ret) { + ret = records[node].addr; + } + + /** + * Sets the address associated with an ENS node. + * May only be called by the owner of that node in the ENS registry. + * @param node The node to update. + * @param addr The address to set. + */ + function setAddr(bytes32 node, address addr) only_owner(node) { + records[node].addr = addr; + AddrChanged(node, addr); + } + + /** + * Returns the content hash associated with an ENS node. + * Note that this resource type is not standardized, and will likely change + * in future to a resource type based on multihash. + * @param node The ENS node to query. + * @return The associated content hash. + */ + function content(bytes32 node) constant returns (bytes32 ret) { + ret = records[node].content; + } + + /** + * Sets the content hash associated with an ENS node. + * May only be called by the owner of that node in the ENS registry. + * Note that this resource type is not standardized, and will likely change + * in future to a resource type based on multihash. + * @param node The node to update. + * @param hash The content hash to set + */ + function setContent(bytes32 node, bytes32 hash) only_owner(node) { + records[node].content = hash; + ContentChanged(node, hash); + } + + /** + * Returns the name associated with an ENS node, for reverse records. + * Defined in EIP181. + * @param node The ENS node to query. + * @return The associated name. + */ + function name(bytes32 node) constant returns (string ret) { + ret = records[node].name; + } + + /** + * Sets the name associated with an ENS node, for reverse records. + * May only be called by the owner of that node in the ENS registry. + * @param node The node to update. + * @param name The name to set. + */ + function setName(bytes32 node, string name) only_owner(node) { + records[node].name = name; + NameChanged(node, name); + } + + /** + * Returns the ABI associated with an ENS node. + * Defined in EIP205. + * @param node The ENS node to query + * @param contentTypes A bitwise OR of the ABI formats accepted by the caller. + * @return contentType The content type of the return value + * @return data The ABI data + */ + function ABI(bytes32 node, uint256 contentTypes) constant returns (uint256 contentType, bytes data) { + var record = records[node]; + for(contentType = 1; contentType <= contentTypes; contentType <<= 1) { + if ((contentType & contentTypes) != 0 && record.abis[contentType].length > 0) { + data = record.abis[contentType]; + return; + } + } + contentType = 0; + } + + /** + * Sets the ABI associated with an ENS node. + * Nodes may have one ABI of each content type. To remove an ABI, set it to + * the empty string. + * @param node The node to update. + * @param contentType The content type of the ABI + * @param data The ABI data. + */ + function setABI(bytes32 node, uint256 contentType, bytes data) only_owner(node) { + // Content types must be powers of 2 + if (((contentType - 1) & contentType) != 0) throw; + + records[node].abis[contentType] = data; + ABIChanged(node, contentType); + } + + /** + * Returns the SECP256k1 public key associated with an ENS node. + * Defined in EIP 619. + * @param node The ENS node to query + * @return x, y the X and Y coordinates of the curve point for the public key. + */ + function pubkey(bytes32 node) constant returns (bytes32 x, bytes32 y) { + return (records[node].pubkey.x, records[node].pubkey.y); + } + + /** + * Sets the SECP256k1 public key associated with an ENS node. + * @param node The ENS node to query + * @param x the X coordinate of the curve point for the public key. + * @param y the Y coordinate of the curve point for the public key. + */ + function setPubkey(bytes32 node, bytes32 x, bytes32 y) only_owner(node) { + records[node].pubkey = PublicKey(x, y); + PubkeyChanged(node, x, y); + } + + /** + * Returns the text data associated with an ENS node and key. + * @param node The ENS node to query. + * @param key The text data key to query. + * @return The associated text data. + */ + function text(bytes32 node, string key) constant returns (string ret) { + ret = records[node].text[key]; + } + + /** + * Sets the text data associated with an ENS node and key. + * May only be called by the owner of that node in the ENS registry. + * @param node The node to update. + * @param key The key to set. + * @param value The text data value to set. + */ + function setText(bytes32 node, string key, string value) only_owner(node) { + records[node].text[key] = value; + TextChanged(node, key, key); + } +} |