v2

package
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 Go to latest Published: Dec 20, 2021 License: ISC Imports: 1 Imported by: 0

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Index

Constants

View Source 
const (
	// APIRoute is prefixed onto all routes in this package.
	APIRoute = "/v2"

	// RouteRecordNew creates a new record.
	RouteRecordNew = "/recordnew"

	// RouteRecordEdit edits a record.
	RouteRecordEdit = "/recordedit"

	// RouteRecordEditMetadata edits record's metadata.
	RouteRecordEditMetadata = "/recordeditmetadata"

	// RouteRecordSetStatus sets the status of a record.
	RouteRecordSetStatus = "/recordsetstatus"

	// RouteRecordTimestamps returns the record timestamps.
	RouteRecordTimestamps = "/recordtimestamps"

	// RouteRecords retrieves a page of records.
	RouteRecords = "/records"

	// RouteInventory returns the tokens of records in the inventory
	// categorized by record state and record status.
	RouteInventory = "/inventory"

	// RouteInventoryOrdered returns a page of record tokens ordered by the
	// timestamp of their most recent status change from newest to
	// oldest. The returned tokens will include all record statuses.
	RouteInventoryOrdered = "/inventoryordered"

	// RoutePluginWrite executes a plugin command that writes data.
	RoutePluginWrite = "/pluginwrite"

	// RoutePluginReads executes a read-only plugin command.
	RoutePluginReads = "/pluginreads"

	// RoutePluginInventory returns all registered plugins.
	RoutePluginInventory = "/plugininventory"

	// ChallengeSize is the size of a request challenge token in bytes.
	ChallengeSize = 32
)
View Source 
const (
	// TokenSize is the size of a censorship record token in bytes.
	TokenSize = 8

	// ShortTokenLength is the length, in characters, of a hex encoded
	// token that has been shortened to improved UX. Short tokens can
	// be used to retrieve record data but cannot be used on any routes
	// that write record data. 7 characters was chosen to match the git
	// abbreviated commitment hash size.
	ShortTokenLength = 7
)
View Source 
const (
	// InventoryPageSize is the number of tokens that will be returned
	// per page for all inventory commands.
	InventoryPageSize uint32 = 20
)
View Source 
const (
	// RecordsPageSize is the maximum number of records that can be
	// requested using the Records commands.
	RecordsPageSize uint32 = 5
)

Variables

View Source 
var (
	// ErrorCodes contains the human readable error codes.
	ErrorCodes = map[ErrorCodeT]string{
		ErrorCodeInvalid:                 "invalid error",
		ErrorCodeRequestPayloadInvalid:   "request payload invalid",
		ErrorCodeChallengeInvalid:        "invalid challenge",
		ErrorCodeMetadataStreamInvalid:   "metadata stream invalid",
		ErrorCodeMetadataStreamDuplicate: "metadata stream duplicate",
		ErrorCodeFilesEmpty:              "files are empty",
		ErrorCodeFileNameInvalid:         "file name invalid",
		ErrorCodeFileNameDuplicate:       "file name is a duplicate",
		ErrorCodeFileDigestInvalid:       "file digest invalid",
		ErrorCodeFilePayloadInvalid:      "file payload invalid",
		ErrorCodeFileMIMETypeInvalid:     "file mime type invalid",
		ErrorCodeFileMIMETypeUnsupported: "file mime type not supported",
		ErrorCodeTokenInvalid:            "token invalid",
		ErrorCodeRecordNotFound:          "record not found",
		ErrorCodeRecordLocked:            "record is locked",
		ErrorCodeNoRecordChanges:         "no record changes",
		ErrorCodeStatusChangeInvalid:     "status change invalid",
		ErrorCodePluginIDInvalid:         "pluguin id invalid",
		ErrorCodePluginCmdInvalid:        "plugin cmd invalid",
		ErrorCodePageSizeExceeded:        "page size exceeded",
		ErrorCodeRecordStateInvalid:      "record state invalid",
		ErrorCodeRecordStatusInvalid:     "record status invalid",
		ErrorCodeDuplicatePayload:        "duplicate payload",
	}
)
View Source 
var (
	// RecordStates contains the human readable record states.
	RecordStates = map[RecordStateT]string{
		RecordStateInvalid:  "invalid",
		RecordStateUnvetted: "unvetted",
		RecordStateVetted:   "vetted",
	}
)
View Source 
var (
	// RecordStatuses contains the human readable record statuses.
	RecordStatuses = map[RecordStatusT]string{
		RecordStatusInvalid:    "invalid",
		RecordStatusUnreviewed: "unreviewed",
		RecordStatusPublic:     "public",
		RecordStatusCensored:   "censored",
		RecordStatusArchived:   "archived",
	}
)

Functions

This section is empty.

Types

type CensorshipRecord 

type CensorshipRecord struct {
	// Token is a random censorship token that is generated by the
	// server. It serves as a unique identifier for the record.
	Token string `json:"token"`

	// Merkle is the ordered merkle root of all files in the record.
	Merkle string `json:"merkle"`

	// Signature is the server signature of the Merkle+Token.
	Signature string `json:"signature"`
}

CensorshipRecord contains cryptographic proof that a record was accepted for review by the server. The proof is verifiable by the client.

type ErrorCodeT 

type ErrorCodeT uint32

ErrorCodeT represents a user error code. 

const (
	// ErrorCodeInvalid is an invalid error code.
	ErrorCodeInvalid ErrorCodeT = 0

	// ErrorCodeRequestPayloadInvalid is returned when a request's payload
	// is invalid.
	ErrorCodeRequestPayloadInvalid ErrorCodeT = 1

	// ErrorCodeChallengeInvalid is returned when a challenge is invalid.
	ErrorCodeChallengeInvalid ErrorCodeT = 2

	// ErrorCodeMetadataStreamInvalid is returned when a metadata stream
	// is invalid.
	ErrorCodeMetadataStreamInvalid ErrorCodeT = 3

	// ErrorCodeMetadataStreamDuplicate is returned when a metadata stream
	// is a duplicate.
	ErrorCodeMetadataStreamDuplicate ErrorCodeT = 4

	// ErrorCodeFilesEmpty is returned when no files found.
	ErrorCodeFilesEmpty ErrorCodeT = 5

	// ErrorCodeFileNameInvalid is returned when a file name is invalid.
	ErrorCodeFileNameInvalid ErrorCodeT = 6

	// ErrorCodeFileNameDuplicate is returned when a file name is a duplicate.
	ErrorCodeFileNameDuplicate ErrorCodeT = 7

	// ErrorCodeFileDigestInvalid is returned when a file digest is invalid.
	ErrorCodeFileDigestInvalid ErrorCodeT = 8

	// ErrorCodeFilePayloadInvalid is returned when a file payload is invalid.
	ErrorCodeFilePayloadInvalid ErrorCodeT = 9

	// ErrorCodeFileMIMETypeInvalid is returned when a file MIME type is
	// invalid.
	ErrorCodeFileMIMETypeInvalid ErrorCodeT = 10

	// ErrorCodeFileMIMETypeUnsupported is returned when a file MIME type is
	// unsupoorted.
	ErrorCodeFileMIMETypeUnsupported ErrorCodeT = 11

	// ErrorCodeTokenInvalid is returned when a token is invalid.
	ErrorCodeTokenInvalid ErrorCodeT = 12

	// ErrorCodeRecordNotFound is returned when a record is not found.
	ErrorCodeRecordNotFound ErrorCodeT = 13

	// ErrorCodeRecordLocked is returned when a record is locked.
	ErrorCodeRecordLocked ErrorCodeT = 14

	// ErrorCodeNoRecordChanges is retuned when no record changes found.
	ErrorCodeNoRecordChanges ErrorCodeT = 15

	// ErrorCodeStatusChangeInvalid is returned when a record status change
	// is invalid.
	ErrorCodeStatusChangeInvalid ErrorCodeT = 16

	// ErrorCodePluginIDInvalid is returned when a plugin ID is invalid.
	ErrorCodePluginIDInvalid ErrorCodeT = 17

	// ErrorCodePluginCmdInvalid is returned when a plugin cmd is invalid.
	ErrorCodePluginCmdInvalid ErrorCodeT = 18

	// ErrorCodePageSizeExceeded is returned when the request's page size
	// exceeds the maximum page size of the request.
	ErrorCodePageSizeExceeded ErrorCodeT = 19

	// ErrorCodeRecordStateInvalid is returned when the provided state
	// does not match the record state.
	ErrorCodeRecordStateInvalid ErrorCodeT = 20

	// ErrorCodeRecordStatusInvalid is returned when a record status is
	// invalid.
	ErrorCodeRecordStatusInvalid ErrorCodeT = 21

	// ErrorCodeDuplicatePayload is returned when a duplicate payload is sent
	// to a plugin, where it tries to write data that already exists. Timestamp
	// data relies on the hash of the payload, therefore duplicate payloads are
	// not allowed since they will cause collisions.
	ErrorCodeDuplicatePayload ErrorCodeT = 22

	// ErrorCodeLast is used by unit tests to verify that all error codes have
	// a human readable entry in the ErrorCodes map. This error will never be
	// returned.
	ErrorCodeLast ErrorCodeT = 23
)

type File 

type File struct {
	Name    string `json:"name"`    // Basename of the file
	MIME    string `json:"mime"`    // MIME type
	Digest  string `json:"digest"`  // SHA256 of decoded Payload
	Payload string `json:"payload"` // Base64 encoded file payload
}

File represents a record file.

type Inventory 

type Inventory struct {
	Challenge string        `json:"challenge"` // Random challenge
	State     RecordStateT  `json:"state,omitempty"`
	Status    RecordStatusT `json:"status,omitempty"`
	Page      uint32        `json:"page,omitempty"`
}

Inventory requests the tokens of the records in the inventory, categorized by record state and record status. The tokens are ordered by the timestamp of their most recent status change, sorted from newest to oldest.

The state, status, and page arguments can be provided to request a specific page of record tokens.

If no status is provided then a page of tokens for all statuses will be returned. All other arguments will be ignored.

type InventoryOrdered 

type InventoryOrdered struct {
	Challenge string       `json:"challenge"` // Random challenge
	State     RecordStateT `json:"state"`
	Page      uint32       `json:"page"`
}

InventoryOrdered requests a page of record tokens ordered by the timestamp of their most recent status change from newest to oldest. The reply will include tokens for all record statuses.

type InventoryOrderedReply 

type InventoryOrderedReply struct {
	Response string   `json:"response"` // Challenge response
	Tokens   []string `json:"tokens"`
}

InventoryOrderedReply is the reply to the InventoryOrdered command.

type InventoryReply 

type InventoryReply struct {
	Response string              `json:"response"` // Challenge response
	Unvetted map[string][]string `json:"unvetted"` // [status][]token
	Vetted   map[string][]string `json:"vetted"`   // [status][]token
}

InventoryReply is the reply to the Inventory command. The map keys are the human readable record statuses defined by the RecordStatuses array.

type MetadataStream 

type MetadataStream struct {
	PluginID string `json:"pluginid"` // Plugin identity
	StreamID uint32 `json:"streamid"` // Stream identity
	Payload  string `json:"payload"`  // JSON encoded metadata
}

MetadataStream describes a single metada stream.

type Plugin 

type Plugin struct {
	ID       string          `json:"id"`
	Settings []PluginSetting `json:"settings"`
}

Plugin describes a plugin and its settings.

type PluginCmd 

type PluginCmd struct {
	Token   string `json:"token,omitempty"`   // Censorship token
	ID      string `json:"id"`                // Plugin identifier
	Command string `json:"command"`           // Plugin command
	Payload string `json:"payload,omitempty"` // Command payload
}

PluginCmd represents plugin command and the command payload. A token is required for all plugin writes, but is optional for reads.

type PluginCmdReply 

type PluginCmdReply struct {
	Token   string `json:"token"`   // Censorship token
	ID      string `json:"id"`      // Plugin identifier
	Command string `json:"command"` // Plugin command
	Payload string `json:"payload"` // Response payload

	// UserError will be populated if a user error is encountered prior
	// to plugin command execution.
	UserError *UserErrorReply `json:"usererror,omitempty"`

	// PluginError will be populated if a plugin error occurred during
	// plugin command execution.
	PluginError *PluginErrorReply `json:"pluginerror,omitempty"`
}

PluginCmdReply is the reply to an individual plugin command that is part of a batch of plugin commands. The error will be included in the reply if one was encountered.

type PluginErrorReply 

type PluginErrorReply struct {
	PluginID     string `json:"pluginid"`
	ErrorCode    uint32 `json:"errorcode"`
	ErrorContext string `json:"errorcontext,omitempty"`
}

PluginErrorReply is the reply that the server returns when it encounters a plugin error. The error code will be specific to the plugin.

func (PluginErrorReply) Error 

func (e PluginErrorReply) Error() string

Error satisfies the error interface.

type PluginInventory 

type PluginInventory struct {
	Challenge string `json:"challenge"` // Random challenge
}

PluginInventory retrieves all active plugins and their settings.

type PluginInventoryReply 

type PluginInventoryReply struct {
	Response string   `json:"response"` // Challenge response
	Plugins  []Plugin `json:"plugins"`
}

PluginInventoryReply returns all plugins and their settings.

type PluginReads 

type PluginReads struct {
	Challenge string      `json:"challenge"` // Random challenge
	Cmds      []PluginCmd `json:"cmds"`
}

PluginReads executes a batch of read only plugin commands.

type PluginReadsReply 

type PluginReadsReply struct {
	Response string           `json:"response"` // Challenge response
	Replies  []PluginCmdReply `json:"replies"`
}

PluginReadsReply is the reply to the PluginReads command.

type PluginSetting 

type PluginSetting struct {
	Key   string `json:"key"`
	Value string `json:"value"`
}

PluginSetting is a structure that holds key/value pairs of a plugin setting.

type PluginWrite 

type PluginWrite struct {
	Challenge string    `json:"challenge"` // Random challenge
	Cmd       PluginCmd `json:"cmd"`
}

PluginWrite executes a plugin command that writes data.

type PluginWriteReply 

type PluginWriteReply struct {
	Response string `json:"response"` // Challenge response
	Payload  string `json:"payload"`  // Response payload
}

PluginWriteReply is the reply to the PluginWrite command.

type Proof 

type Proof struct {
	Type       string   `json:"type"`
	Digest     string   `json:"digest"`
	MerkleRoot string   `json:"merkleroot"`
	MerklePath []string `json:"merklepath"`
	ExtraData  string   `json:"extradata"` // JSON encoded
}

Proof contains an inclusion proof for the digest in the merkle root. All digests are hex encoded SHA256 digests.

The ExtraData field is used by certain types of proofs to include additional data that is required to validate the proof.

type Record 

type Record struct {
	State     RecordStateT     `json:"state"`     // Record state
	Status    RecordStatusT    `json:"status"`    // Record status
	Version   uint32           `json:"version"`   // Version of this record
	Timestamp int64            `json:"timestamp"` // Last update
	Metadata  []MetadataStream `json:"metadata"`
	Files     []File           `json:"files"`

	CensorshipRecord CensorshipRecord `json:"censorshiprecord"`
}

Record represents a record and all of its contents.

type RecordEdit 

type RecordEdit struct {
	Challenge   string           `json:"challenge"` // Random challenge
	Token       string           `json:"token"`     // Censorship token
	MDAppend    []MetadataStream `json:"mdappend,omitempty"`
	MDOverwrite []MetadataStream `json:"mdoverwrite,omitempty"`
	FilesAdd    []File           `json:"filesadd,omitempty"`
	FilesDel    []string         `json:"filesdel,omitempty"`
}

RecordEdit edits and existing record.

MDAppend appends metadata to a metadata stream. MDOverwrite overwrites a metadata stream. If the metadata stream does not exist yet for either of these arguments, a new metadata stream will be created.

FilesAdd should include files that are being modified or added. FilesDel is the filenames of existing files that will be deleted. If a filename is provided in FilesDel that does not correspond to an actual record file, it will be ignored.

type RecordEditMetadata 

type RecordEditMetadata struct {
	Challenge   string           `json:"challenge"` // Random challenge
	Token       string           `json:"token"`     // Censorship token
	MDAppend    []MetadataStream `json:"mdappend,omitempty"`
	MDOverwrite []MetadataStream `json:"mdoverwrite,omitempty"`
}

RecordEditMetadata edits the metadata of a record.

MDAppend appends metadata to a metadata stream. MDOverwrite overwrites a metadata stream. If the metadata stream does not exist yet for either of these arguments, a new metadata stream will be created.

type RecordEditMetadataReply 

type RecordEditMetadataReply struct {
	Response string `json:"response"` // Challenge response
	Record   Record `json:"record"`
}

RecordEditMetadataReply is the reply to the RecordEditMetadata command.

type RecordEditReply 

type RecordEditReply struct {
	Response string `json:"response"` // Challenge response
	Record   Record `json:"record"`
}

RecordEditReply is the reply to the RecordEdit command.

type RecordNew 

type RecordNew struct {
	Challenge string           `json:"challenge"` // Random challenge
	Metadata  []MetadataStream `json:"metadata,omitempty"`
	Files     []File           `json:"files"`
}

RecordNew creates a new record. It must include all files that are part of the record and it may contain optional metadata.

type RecordNewReply 

type RecordNewReply struct {
	Response string `json:"response"` // Challenge response
	Record   Record `json:"record"`
}

RecordNewReply is the reply to the RecordNew command.

type RecordRequest 

type RecordRequest struct {
	Token        string   `json:"token"`
	Version      uint32   `json:"version,omitempty"`
	Filenames    []string `json:"filenames,omitempty"`
	OmitAllFiles bool     `json:"omitallfiles,omitempty"`
}

RecordRequest is used to request a record. It gives the caller granular control over what is returned. The only required field is the token. All other fields are optional. All record files are returned by default unless one of the file arguments is provided.

Version is used to request a specific version of a record. If no version is provided then the most recent version of the record will be returned.

Filenames can be used to request specific files. If filenames is provided then the specified files will be the only files that are returned.

OmitAllFiles can be used to retrieve a record without any of the record files. This supersedes the filenames argument.

type RecordSetStatus 

type RecordSetStatus struct {
	Challenge   string           `json:"challenge"` // Random challenge
	Token       string           `json:"token"`     // Censorship token
	Status      RecordStatusT    `json:"status"`
	MDAppend    []MetadataStream `json:"mdappend,omitempty"`
	MDOverwrite []MetadataStream `json:"mdoverwrite,omitempty"`
}

RecordSetStatus sets the status of a record.

MDAppend appends metadata to a metadata stream. MDOverwrite overwrites a metadata stream. If the metadata stream does not exist yet for either of these arguments, a new metadata stream will be created.

type RecordSetStatusReply 

type RecordSetStatusReply struct {
	Response string `json:"response"` // Challenge response
	Record   Record `json:"record"`
}

RecordSetStatusReply is the reply to the RecordSetStatus command.

type RecordStateT 

type RecordStateT uint32

RecordStateT represents the state of a record. 

const (
	// RecordStateInvalid is an invalid record state.
	RecordStateInvalid RecordStateT = 0

	// RecordStateUnvetted indicates a record has not been made public.
	RecordStateUnvetted RecordStateT = 1

	// RecordStateVetted indicates a record has been made public.
	RecordStateVetted RecordStateT = 2

	// RecordStateLast is used for unit test validation of human readable
	// errors.
	RecordStateLast = 3
)

type RecordStatusT 

type RecordStatusT uint32

RecordStatusT represents the status of a record. 

const (
	// RecordStatusInvalid is an invalid status code.
	RecordStatusInvalid RecordStatusT = 0

	// RecordStatusUnreviewed indicates a record has not been made
	// public yet. The state of an unreviewed record will always be
	// unvetted.
	RecordStatusUnreviewed RecordStatusT = 1

	// RecordStatusPublic indicates a record has been made public. The
	// state of a public record will always be vetted.
	RecordStatusPublic RecordStatusT = 2

	// RecordStatusCensored indicates a record has been censored. A
	// censored record is locked from any further updates and all
	// record content is permanently deleted. A censored record can
	// have a state of either unvetted or vetted.
	RecordStatusCensored RecordStatusT = 3

	// RecordStatusArchived indicates a record has been archived. An
	// archived record is locked from any further updates. An archived
	// record can have a state of either unvetted or vetted.
	RecordStatusArchived RecordStatusT = 4

	// RecordStatusLast is used for unit test validation of human readable
	// errors.
	RecordStatusLast = 5
)

type RecordTimestamps 

type RecordTimestamps struct {
	Challenge string `json:"challenge"`         // Random challenge
	Token     string `json:"token"`             // Censorship token
	Version   uint32 `json:"version,omitempty"` // Record version
}

RecordTimestamps requests the timestamps for a record. If a version is not included the most recent version will be returned.

type RecordTimestampsReply 

type RecordTimestampsReply struct {
	Response       string    `json:"response"` // Challenge response
	RecordMetadata Timestamp `json:"recordmetadata"`

	// map[pluginID]map[streamID]Timestamp
	Metadata map[string]map[uint32]Timestamp `json:"metadata"`

	// map[filename]Timestamp
	Files map[string]Timestamp `json:"files"`
}

RecordTimestampsReply is the reply ot the RecordTimestamps command.

type Records 

type Records struct {
	Challenge string          `json:"challenge"` // Random challenge
	Requests  []RecordRequest `json:"requests"`
}

Records retrieves a record. If no version is provided the most recent version will be returned.

type RecordsReply 

type RecordsReply struct {
	Response string            `json:"response"` // Challenge response
	Records  map[string]Record `json:"records"`  // [token]Record
}

RecordsReply is the reply to the Records command. If a record was not found or an error occurred while retrieving it the token will not be included in the returned map.

**Note** partial record's merkle root is not verifiable - when generating the record's merkle all files must be present.

type ServerErrorReply 

type ServerErrorReply struct {
	ErrorCode int64 `json:"errorcode"`
}

ServerErrorReply is the reply that the server returns when it encounters an unrecoverable error while executing a command. The HTTP status code will be 500 and the ErrorCode field will contain a UNIX timestamp that the user can provide to the server admin to track down the error details in the logs.

func (ServerErrorReply) Error 

func (e ServerErrorReply) Error() string

Error satisfies the error interface.

type Timestamp 

type Timestamp struct {
	Data       string  `json:"data"` // JSON encoded
	Digest     string  `json:"digest"`
	TxID       string  `json:"txid"`
	MerkleRoot string  `json:"merkleroot"`
	Proofs     []Proof `json:"proofs"`
}

Timestamp contains all of the data required to verify that a piece of record content was timestamped onto the decred blockchain.

All digests are hex encoded SHA256 digests. The merkle root can be found in the OP_RETURN of the specified DCR transaction.

TxID, MerkleRoot, and Proofs will only be populated once the merkle root has been included in a DCR tx and the tx has 6 confirmations. The Data field will not be populated if the data has been censored.

type UserErrorReply 

type UserErrorReply struct {
	ErrorCode    ErrorCodeT `json:"errorcode"`
	ErrorContext string     `json:"errorcontext,omitempty"`
}

UserErrorReply is the reply that the server returns when it encounters an error that is caused by something that the user did (malformed input, bad timing, etc). The HTTP status code will be 400.

func (UserErrorReply) Error 

func (e UserErrorReply) Error() string

Error satisfies the error interface.

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