package protocol import ( "crypto/ecdsa" "encoding/hex" "github.com/status-im/status-go/eth-node/crypto" "github.com/status-im/status-go/eth-node/types" "github.com/status-im/status-go/protocol/identity/alias" "github.com/status-im/status-go/protocol/identity/identicon" ) const ( contactBlocked = ":contact/blocked" contactAdded = ":contact/added" contactRequestReceived = ":contact/request-received" ) // ContactDeviceInfo is a struct containing information about a particular device owned by a contact type ContactDeviceInfo struct { // The installation id of the device InstallationID string `json:"id"` // Timestamp represents the last time we received this info Timestamp int64 `json:"timestamp"` // FCMToken is to be used for push notifications FCMToken string `json:"fcmToken"` } // Contact has information about a "Contact". A contact is not necessarily one // that we added or added us, that's based on SystemTags. type Contact struct { // ID of the contact. It's a hex-encoded public key (prefixed with 0x). ID string `json:"id"` // Ethereum address of the contact Address string `json:"address,omitempty"` // ENS name of contact Name string `json:"name,omitempty"` // EnsVerified whether we verified the name of the contact ENSVerified bool `json:"ensVerified"` // EnsVerifiedAt the time we last verified the name ENSVerifiedAt uint64 `json:"ensVerifiedAt"` // LastENSClockValue is the last clock value of when we // received an ENS name for the user LastENSClockValue uint64 `json:"lastENSClockValue"` // ENSVerificationRetries is how many times we retried the ENS ENSVerificationRetries uint64 `json:"ensVerificationRetries"` // Generated username name of the contact Alias string `json:"alias,omitempty"` // Identicon generated from public key Identicon string `json:"identicon"` // Photo is the base64 encoded photo Photo string `json:"photoPath,omitempty"` // LastUpdated is the last time we received an update from the contact // updates should be discarded if last updated is less than the one stored LastUpdated uint64 `json:"lastUpdated"` // SystemTags contains information about whether we blocked/added/have been // added. SystemTags []string `json:"systemTags"` DeviceInfo []ContactDeviceInfo `json:"deviceInfo"` TributeToTalk string `json:"tributeToTalk,omitempty"` } func (c Contact) PublicKey() (*ecdsa.PublicKey, error) { b, err := types.DecodeHex(c.ID) if err != nil { return nil, err } return crypto.UnmarshalPubkey(b) } func (c Contact) IsAdded() bool { return existsInStringSlice(c.SystemTags, contactAdded) } func (c Contact) HasBeenAdded() bool { return existsInStringSlice(c.SystemTags, contactRequestReceived) } func (c Contact) IsBlocked() bool { return existsInStringSlice(c.SystemTags, contactBlocked) } func (c *Contact) ResetENSVerification(clock uint64, name string) { c.ENSVerifiedAt = 0 c.ENSVerified = false c.ENSVerificationRetries = 0 c.LastENSClockValue = clock c.Name = name } // existsInStringSlice checks if a string is in a set. func existsInStringSlice(set []string, find string) bool { for _, s := range set { if s == find { return true } } return false } func buildContact(publicKey *ecdsa.PublicKey) (*Contact, error) { id := "0x" + hex.EncodeToString(crypto.FromECDSAPub(publicKey)) identicon, err := identicon.GenerateBase64(id) if err != nil { return nil, err } contact := &Contact{ ID: id, Alias: alias.GenerateFromPublicKey(publicKey), Identicon: identicon, } return contact, nil } // HasCustomFields returns whether the the contact has any field that is valuable // to the client other than the computed name/image func (c Contact) HasCustomFields() bool { return c.IsAdded() || c.HasBeenAdded() || c.IsBlocked() || c.ENSVerified } func contactIDFromPublicKey(key *ecdsa.PublicKey) string { return types.EncodeHex(crypto.FromECDSAPub(key)) }