Chainparam: Add 'bip70_name' field for blockchain

'bip70_name' is corresponding to the 'chain' field of
the API 'getblockchaininfo'.
At the beginning of lightningd, we use the 'chain' field of 'getblockchaininfo' to check if we are on right blockchain.

bitcoin/chainparams.c

@@ -13,6 +13,7 @@
 const struct chainparams networks[] = {
     {.network_name = "bitcoin",
      .bip173_name = "bc",
+     .bip70_name = "main",
      .genesis_blockhash = {{{.u.u8 = {0x6f, 0xe2, 0x8c, 0x0a, 0xb6, 0xf1, 0xb3, 0x72, 0xc1, 0xa6, 0xa2, 0x46, 0xae, 0x63, 0xf7, 0x4f, 0x93, 0x1e, 0x83, 0x65, 0xe1, 0x5a, 0x08, 0x9c, 0x68, 0xd6, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00}}}},
      .rpc_port = 8332,
      .cli = "bitcoin-cli",
@@ -34,6 +35,7 @@ const struct chainparams networks[] = {
      .bip32_key_version = {.bip32_pubkey_version = BIP32_VER_MAIN_PUBLIC, .bip32_privkey_version = BIP32_VER_MAIN_PRIVATE}},
     {.network_name = "regtest",
      .bip173_name = "bcrt",
+     .bip70_name = "regtest",
      .genesis_blockhash = {{{.u.u8 = {0x06, 0x22, 0x6e, 0x46, 0x11, 0x1a, 0x0b, 0x59, 0xca, 0xaf, 0x12, 0x60, 0x43, 0xeb, 0x5b, 0xbf, 0x28, 0xc3, 0x4f, 0x3a, 0x5e, 0x33, 0x2a, 0x1f, 0xc7, 0xb2, 0xb7, 0x3c, 0xf1, 0x88, 0x91, 0x0f}}}},
      .rpc_port = 18332,
      .cli = "bitcoin-cli",
@@ -48,6 +50,7 @@ const struct chainparams networks[] = {
      .bip32_key_version = {.bip32_pubkey_version = BIP32_VER_TEST_PUBLIC, .bip32_privkey_version = BIP32_VER_TEST_PRIVATE}},
     {.network_name = "testnet",
      .bip173_name = "tb",
+     .bip70_name = "test",
      .genesis_blockhash = {{{.u.u8 = {0x43, 0x49, 0x7f, 0xd7, 0xf8, 0x26, 0x95, 0x71, 0x08, 0xf4, 0xa3, 0x0f, 0xd9, 0xce, 0xc3, 0xae, 0xba, 0x79, 0x97, 0x20, 0x84, 0xe9, 0x0e, 0xad, 0x01, 0xea, 0x33, 0x09, 0x00, 0x00, 0x00, 0x00}}}},
      .rpc_port = 18332,
      .cli = "bitcoin-cli",
@@ -61,6 +64,7 @@ const struct chainparams networks[] = {
      .bip32_key_version = {.bip32_pubkey_version = BIP32_VER_TEST_PUBLIC, .bip32_privkey_version = BIP32_VER_TEST_PRIVATE}},
     {.network_name = "litecoin",
      .bip173_name = "ltc",
+     .bip70_name = "main",
      .genesis_blockhash = {{{.u.u8 = {0xe2, 0xbf, 0x04, 0x7e, 0x7e, 0x5a, 0x19, 0x1a, 0xa4, 0xef, 0x34, 0xd3, 0x14, 0x97, 0x9d, 0xc9, 0x98, 0x6e, 0x0f, 0x19, 0x25, 0x1e, 0xda, 0xba, 0x59, 0x40, 0xfd, 0x1f, 0xe3, 0x65, 0xa7, 0x12 }}}},
      .rpc_port = 9332,
      .cli = "litecoin-cli",
@@ -75,6 +79,7 @@ const struct chainparams networks[] = {
      .bip32_key_version = {.bip32_pubkey_version = BIP32_VER_MAIN_PUBLIC, .bip32_privkey_version = BIP32_VER_MAIN_PRIVATE}},
     {.network_name = "litecoin-testnet",
      .bip173_name = "tltc",
+     .bip70_name = "test",
      .genesis_blockhash = {{{.u.u8 = { 0xa0, 0x29, 0x3e, 0x4e, 0xeb, 0x3d, 0xa6, 0xe6, 0xf5, 0x6f, 0x81, 0xed, 0x59, 0x5f, 0x57, 0x88, 0x0d, 0x1a, 0x21, 0x56, 0x9e, 0x13, 0xee, 0xfd, 0xd9, 0x51, 0x28, 0x4b, 0x5a, 0x62, 0x66, 0x49 }}}},
      .rpc_port = 19332,
      .cli = "litecoin-cli",

bitcoin/chainparams.h

@@ -15,6 +15,9 @@ struct bip32_key_version {
 struct chainparams {
 	const char *network_name;
 	const char *bip173_name;
+	/*'bip70_name' is corresponding to the 'chain' field of
+	 * the API 'getblockchaininfo' */
+	const char *bip70_name;
 	const struct bitcoin_blkid genesis_blockhash;
 	const int rpc_port;
 	const char *cli;