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  1. // Copyright 2017-2018 DERO Project. All rights reserved.
  2. // Use of this source code in any form is governed by RESEARCH license.
  3. // license can be found in the LICENSE file.
  4. // GPG: 0F39 E425 8C65 3947 702A 8234 08B2 0360 A03A 9DE8
  5. //
  6. //
  7. // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
  8. // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  9. // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  10. // THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  11. // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  12. // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  13. // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  14. // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
  15. // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  16. package rpcserver
  17. // get block template handler not implemented
  18. //import "fmt"
  19. import "context"
  20. import "encoding/hex"
  21. import "encoding/json"
  22. //import "log"
  23. //import "net/http"
  24. import "github.com/intel-go/fastjson"
  25. import "github.com/osamingo/jsonrpc"
  26. import "github.com/deroproject/derosuite/crypto"
  27. import "github.com/deroproject/derosuite/blockchain"
  28. type (
  29. GetBlock_Handler struct{}
  30. GetBlock_Params struct {
  31. Hash string `json:"hash,omitempty"` // Monero Daemon breaks if both are provided
  32. Height uint64 `json:"height,omitempty"` // Monero Daemon breaks if both are provided
  33. } // no params
  34. GetBlock_Result struct {
  35. Blob string `json:"blob"`
  36. Json string `json:"json"`
  37. Block_Header blockchain.BlockHeader_Print `json:"block_header"`
  38. Status string `json:"status"`
  39. }
  40. )
  41. // TODO
  42. func (h GetBlock_Handler) ServeJSONRPC(c context.Context, params *fastjson.RawMessage) (interface{}, *jsonrpc.Error) {
  43. var p GetBlock_Params
  44. var hash crypto.Hash
  45. var err error
  46. if errp := jsonrpc.Unmarshal(params, &p); err != nil {
  47. return nil, errp
  48. }
  49. if crypto.HashHexToHash(p.Hash) == hash { // user requested using height
  50. if p.Height >= chain.Get_Height() {
  51. return nil, jsonrpc.ErrInvalidParams()
  52. }
  53. hash, err = chain.Load_BL_ID_at_Height(p.Height)
  54. if err != nil { // if err return err
  55. logger.Warnf("User requested %d height block, chain height %d but err occured %s", p.Height, chain.Get_Height(), err)
  56. return nil, jsonrpc.ErrInvalidParams()
  57. }
  58. } else {
  59. hash = crypto.HashHexToHash(p.Hash)
  60. }
  61. block_header, err := chain.GetBlockHeader(hash)
  62. if err != nil { // if err return err
  63. return nil, jsonrpc.ErrInvalidParams()
  64. }
  65. bl, err := chain.Load_BL_FROM_ID(hash)
  66. if err != nil { // if err return err
  67. return nil, jsonrpc.ErrInvalidParams()
  68. }
  69. json_encoded_bytes, err := json.Marshal(bl)
  70. if err != nil { // if err return err
  71. return nil, jsonrpc.ErrInvalidParams()
  72. }
  73. return GetBlock_Result{ // return success
  74. Block_Header: block_header,
  75. Blob: hex.EncodeToString(bl.Serialize()),
  76. Json: string(json_encoded_bytes),
  77. Status: "OK",
  78. }, nil
  79. }