68 lines
1.6 KiB
Go
68 lines
1.6 KiB
Go
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package middleware
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import (
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"errors"
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"strconv"
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"github.com/certusone/wormhole/node/pkg/vaa"
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"github.com/gofiber/fiber/v2"
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)
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var (
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ErrMalformedChain = errors.New("WRONG_CHAIN_ID")
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ErrMalformedAddr = errors.New("MALFORMED_EMITTER_ADDR")
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ErrMalformedSequence = errors.New("MALFORMED_SEQUENCE_NUMBER")
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ErrMalFormedGuardianAddress = errors.New("MALFORMED_GUARDIAN_ADDR")
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)
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func ExtractChainID(c *fiber.Ctx) (vaa.ChainID, error) {
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chain, err := c.ParamsInt("chain")
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if err != nil {
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return vaa.ChainIDUnset, ErrMalformedChain
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}
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return vaa.ChainID(chain), nil
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}
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func ExtractEmitterAddr(c *fiber.Ctx) (*vaa.Address, error) {
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emitterStr := c.Params("emitter")
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emitter, err := vaa.StringToAddress(emitterStr)
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if err != nil {
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return nil, ErrMalformedAddr
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}
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return &emitter, nil
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}
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func ExtractSequence(c *fiber.Ctx) (uint64, error) {
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sequence := c.Params("sequence")
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seq, err := strconv.ParseUint(sequence, 10, 64)
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if err != nil {
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return 0, err
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}
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return seq, nil
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}
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func ExtractGuardianAddress(c *fiber.Ctx) (string, error) {
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//TODO: check guardianAddress [vaa.StringToAddress(emitterStr)]
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guardianAddress := c.Params("guardian_address")
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if guardianAddress == "" {
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return "", ErrMalFormedGuardianAddress
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}
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return guardianAddress, nil
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}
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func ExtractVAAParams(c *fiber.Ctx) (vaa.ChainID, *vaa.Address, uint64, error) {
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chainID, err := ExtractChainID(c)
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if err != nil {
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return vaa.ChainIDUnset, nil, 0, err
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}
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address, err := ExtractEmitterAddr(c)
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if err != nil {
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return chainID, nil, 0, err
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}
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seq, err := ExtractSequence(c)
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if err != nil {
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return chainID, address, 0, err
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}
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return chainID, address, seq, nil
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}
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