Refactor structs with some getters/setters - Peers part

README.md

@@ -19,3 +19,10 @@ run the shell scripts
 # Tests
 
 
+# Design notes
+Config is written as a json file
+Identity is stored as an encrypted json file
+Prefered servers (messaging and my contact's messaging) are stored in an encrypted badger db with server url as key
+Received servers are stored in a sqlite db for extensive searches, with storage limits
+Messages are stored in several badger? or sqlite? db per user with send/receive time as key
+

client/identity.go

@@ -22,7 +22,7 @@ type Identity struct {
 	Status               string          `json:"status,omitempty"`
 	Peers                PeerList        `json:"peers,omitempty"`
 	Devices              PeerList        `json:"devices,omitempty"`
-	HiddenPeers          [][]byte        `json:"hiddend_peers,omitempty"`
+	HiddenPeers          [][]byte        `json:"hidden_peers,omitempty"`
 	Device               meowlib.KeyPair `json:"device,omitempty"`
 	KnownServers         ServerList      `json:"known_servers,omitempty"`
 	MessageServers       ServerList      `json:"message_servers,omitempty"`
@@ -61,7 +61,7 @@ func (id *Identity) InvitePeer(MyName string, ContactName string, MessageServerI
 		}
 	}
 	for _, i := range MessageServerIdxs {
-		srv := &id.MessageServers.Servers[i].ServerData
+		srv := id.MessageServers.Servers[i].GetServerCard()
 		peer.MyContact.PullServers = append(peer.MyContact.PullServers, srv)
 	}
 	peer.MyContact.Name = MyName
@@ -97,8 +97,8 @@ func (id *Identity) AnswerInvitation(MyName string, ContactName string, MessageS
 	}
 	peer.Contact = *ReceivedContact
 	for _, i := range MessageServerIdxs {
-		srv := id.MessageServers.Servers[i].ServerData
+		srv := id.MessageServers.Servers[i].GetServerCard()
-		peer.MyContact.PullServers = append(peer.MyContact.PullServers, &srv)
+		peer.MyContact.PullServers = append(peer.MyContact.PullServers, srv)
 	}
 	peer.MyContact.Name = MyName
 	peer.MyContact.ContactPublicKey = peer.MyIdentity.Public
@@ -226,7 +226,7 @@ func (id *Identity) GetRequestJobs() []*RequestsJob {
 	for _, server := range id.MessageServers.Servers {
 		var rj RequestsJob
 		rj.Server = server
-		srvs[server.ServerData.GetUid()] = &rj
+		srvs[server.GetServerCard().GetUid()] = &rj
 	}
 	// add ids to the map
 	for _, peer := range id.Peers {

client/matriochka.go

@@ -26,14 +26,14 @@ func ProcessForOutput(usermessage *meowlib.UserMessage, peer *Peer, servers *Ser
 		srv = &servers.Servers[i]
 		var toServerMessage meowlib.ToServerMessage
 		toServerMessage.MatriochkaMessage.Data = lastmsg
-		toServerMessage.MatriochkaMessage.Next.Url = servers.Servers[i+1].ServerData.Url
+		toServerMessage.MatriochkaMessage.Next.Url = servers.Servers[i+1].Url
-		toServerMessage.MatriochkaMessage.Next.PublicKey = servers.Servers[i+1].ServerData.PublicKey
+		toServerMessage.MatriochkaMessage.Next.PublicKey = servers.Servers[i+1].PublicKey
 		toServerMessage.MatriochkaMessage.Next.Delay = int32(servers.Servers[i+1].AllowedDelay)
 		if trackingLookupKey != "" {
 			toServerMessage.MatriochkaMessage.Next.Uuid = lastuuid // change tracking uuid at each server
 			if i > 0 {
-				toServerMessage.MatriochkaMessage.Prev.Url = servers.Servers[i-1].ServerData.Url
+				toServerMessage.MatriochkaMessage.Prev.Url = servers.Servers[i-1].Url
-				toServerMessage.MatriochkaMessage.Prev.PublicKey = servers.Servers[i+1].ServerData.PublicKey
+				toServerMessage.MatriochkaMessage.Prev.PublicKey = servers.Servers[i+1].PublicKey
 				toServerMessage.MatriochkaMessage.Prev.Delay = int32(servers.Servers[i-1].AllowedDelay)
 				toServerMessage.MatriochkaMessage.Prev.Uuid = uuid.NewString()
 				lastuuid = toServerMessage.MatriochkaMessage.Prev.Uuid

client/peer.go

@@ -21,16 +21,21 @@ type Peer struct {
 	MyAvatar string `json:"my_avatar,omitempty"`
 	//	Conversation        []InternalMessage `json:"conversation,omitempty"`
 	// My own keys for that peer
-	MyIdentity     meowlib.KeyPair      `json:"my_identity,omitempty"`
+	MyIdentity     meowlib.KeyPair       `json:"my_identity,omitempty"`
-	MyEncryptionKp meowlib.KeyPair      `json:"my_encryption_kp,omitempty"`
+	MyEncryptionKp meowlib.KeyPair       `json:"my_encryption_kp,omitempty"`
-	MyLookupKp     meowlib.KeyPair      `json:"my_lookup_kp,omitempty"`
+	MyLookupKp     meowlib.KeyPair       `json:"my_lookup_kp,omitempty"`
-	MyPullServers  []meowlib.ServerCard `json:"my_pull_servers,omitempty"`
+	MyPullServers  []*meowlib.ServerCard `json:"my_pull_servers,omitempty"`
-	MyContact      meowlib.ContactCard  `json:"my_contact,omitempty"`
+	MyContact      meowlib.ContactCard   `json:"my_contact,omitempty"` // todo : remove
 	// Peer keys and infos
-	Contact          meowlib.ContactCard `json:"contact,omitempty"`
+	Contact            meowlib.ContactCard `json:"contact,omitempty"` // todo : remove
-	InvitationId     string              `json:"invitation_id,omitempty"`
+	ContactPublicKey   string              `json:"contact_public_key,omitempty"`
-	InvitationUrl    string              `json:"invitation_url,omitempty"`
+	ContactLookupKey   string              `json:"contact_lookup_key,omitempty"`
-	InvitationExpiry time.Time           `json:"invitation_expiry,omitempty"`
+	ContactEncryption  string              `json:"contact_encryption,omitempty"`
+	ContactPullServers []string            `json:"contact_pull_servers,omitempty"`
+	InvitationId       string              `json:"invitation_id,omitempty"`
+	InvitationUrl      string              `json:"invitation_url,omitempty"`
+	InvitationMessage  string              `json:"invitation_message,omitempty"`
+	InvitationExpiry   time.Time           `json:"invitation_expiry,omitempty"`
 	// Internal management attributes
 	Visible             bool      `json:"visible,omitempty"`
 	VisiblePassword     string    `json:"visible_password,omitempty"`
@@ -41,9 +46,39 @@ type Peer struct {
 	DirectMode          bool      `json:"direct_mode,omitempty"`
 	LastMessage         time.Time `json:"last_message,omitempty"`
 	DbIds               []string  `json:"db_ids,omitempty"`
+	IsDevice            bool      `json:"is_device,omitempty"`
 	dbPassword          string
 }
 
+//
+// getters and setters
+//
+
+func (p *Peer) GetMyContact() *meowlib.ContactCard {
+	var c meowlib.ContactCard
+	c.ContactPublicKey = p.MyIdentity.Public
+	c.LookupPublicKey = p.MyLookupKp.Public
+	c.EncryptionPublicKey = p.MyEncryptionKp.Public
+	c.PullServers = p.MyPullServers
+	c.InvitationId = p.InvitationId
+	c.InvitationMessage = p.InvitationMessage
+	c.Name = p.MyName
+	return &c
+}
+
+func (p *Peer) GetContact() *meowlib.ContactCard {
+
+	var c meowlib.ContactCard
+	c.ContactPublicKey = p.ContactPublicKey
+	c.LookupPublicKey = p.ContactLookupKey
+	c.EncryptionPublicKey = p.ContactEncryption
+	//	c.PullServers = meowlib.LoadServerCardsFromUids(p.ContactPullServers)
+	c.InvitationId = p.InvitationId
+	c.InvitationMessage = p.InvitationMessage
+	c.Name = p.Name
+	return &c
+}
+
 //
 // Messages building
 //

client/server.go

@@ -17,28 +17,51 @@ import (
 //   - Utility functions for packing/unpacking, encrypting/decrypting messages for server communication
 //   - Server remote management if ManagerKp is available for that server
 type Server struct {
-	ServerData   meowlib.ServerCard `json:"server_data,omitempty"`
+	//ServerCard   meowlib.ServerCard `json:"server_data,omitempty"`
-	Presence     bool               `json:"presence,omitempty"`
+	Name         string          `json:"name,omitempty"`
-	LastCheck    time.Time          `json:"last_check,omitempty"`
+	Description  string          `json:"description,omitempty"`
-	Uptime       time.Duration      `json:"uptime,omitempty"`
+	PublicKey    string          `json:"public_key,omitempty"`
-	UserKp       meowlib.KeyPair    `json:"user_kp,omitempty"`
+	Url          string          `json:"url,omitempty"`
-	ManagerKp    meowlib.KeyPair    `json:"manager_kp,omitempty"`
+	Login        string          `json:"login,omitempty"`
-	Country      string             `json:"country,omitempty"`
+	Password     string          `json:"password,omitempty"`
-	AllowedDelay int                `json:"allowed_delay,omitempty"`
+	Presence     bool            `json:"presence,omitempty"`
-	Backup       bool               `json:"backup,omitempty"`
+	LastCheck    time.Time       `json:"last_check,omitempty"`
+	Uptime       time.Duration   `json:"uptime,omitempty"`
+	UserKp       meowlib.KeyPair `json:"user_kp,omitempty"`
+	ManagerKp    meowlib.KeyPair `json:"manager_kp,omitempty"`
+	Country      string          `json:"country,omitempty"`
+	AllowedDelay int             `json:"allowed_delay,omitempty"`
+	Backup       bool            `json:"backup,omitempty"`
 }
 
 // CreateServerFromUrl creates a server from a basic url, ex : https://my.meowserver.example:8443/meow/
 func CreateServerFromUrl(url string) *Server {
 	var is Server
-	is.ServerData.Url = url
+	is.Url = url
 	return &is
 }
 
+// GetServerCard returns a server card from a server
+func (ints *Server) GetServerCard() *meowlib.ServerCard {
+	var sc meowlib.ServerCard
+	sc.Name = ints.Name
+	sc.PublicKey = ints.PublicKey
+	sc.Description = ints.Description
+	sc.Url = ints.Url
+	sc.Login = ints.Login
+	sc.Password = ints.Password
+	return &sc
+}
+
 // Create a server from a server card
 func CreateServerFromServerCard(server *meowlib.ServerCard) *Server {
 	var is Server
-	is.ServerData = *server
+	is.Name = server.Name
+	is.PublicKey = server.PublicKey
+	is.Description = server.Description
+	is.Url = server.Url
+	is.Login = server.Login
+	is.Password = server.Password
 	is.UserKp = meowlib.NewKeyPair()
 	return &is
 }
@@ -46,7 +69,7 @@ func CreateServerFromServerCard(server *meowlib.ServerCard) *Server {
 // AsymEncryptMessage prepares a message to send to a specific internal server
 func (ints *Server) AsymEncryptMessage(Message []byte) (*meowlib.EncryptedMessage, error) {
 	var enc *meowlib.EncryptedMessage
-	enc, err := meowlib.AsymEncryptAndSign(ints.ServerData.PublicKey, ints.UserKp.Private, Message)
+	enc, err := meowlib.AsymEncryptAndSign(ints.PublicKey, ints.UserKp.Private, Message)
 	if err != nil {
 		fmt.Println(err.Error())
 		return nil, err
@@ -56,7 +79,7 @@ func (ints *Server) AsymEncryptMessage(Message []byte) (*meowlib.EncryptedMessag
 
 // AsymDecryptMessage reads a message from a specific internal server
 func (ints *Server) AsymDecryptMessage(Message []byte, Signature []byte) (DecryptedMessage []byte, err error) {
-	DecryptedMessage, err = meowlib.AsymDecryptAndCheck(ints.UserKp.Private, ints.ServerData.PublicKey, Message, Signature)
+	DecryptedMessage, err = meowlib.AsymDecryptAndCheck(ints.UserKp.Private, ints.PublicKey, Message, Signature)
 	if err != nil {
 		fmt.Println(err.Error())
 		return nil, err

client/serverlist.go

@@ -37,7 +37,7 @@ func (sl *ServerList) GetServerByIdx(idx int) (server *Server, err error) {
 // GetServerByPubkey returns a server from it's public key
 func (sl *ServerList) GetServerByPubkey(pubkey string) (filtered *Server) {
 	for _, srv := range sl.Servers {
-		if srv.ServerData.PublicKey == pubkey {
+		if srv.PublicKey == pubkey {
 			return &srv
 		}
 	}

doc/meow.tex

@@ -43,13 +43,14 @@ The server requires very few ressources and will run on any low cost single boar
 \textffm{Meow} also provides an anonymizing transfer service very similar to the Tor Onion protocol, we call it the Matriochka protocol.
 Any server can be used for building the transfer chain. 
 Some of them might be marked as trusted.
-Random delays and random payload padding might be set for each forwarding step, making the overall message tracking much more difficult, even for organizations having capabilities of global network surveillance.
+Random delays and random size payload padding might be set for each forwarding step, making the overall message tracking much more difficult, even for organizations having capabilities of global network surveillance.
 It is strongly advised to use trusted servers as your first node and message server (the one that holds your incoming messages).
 
+
 \subsubsection{Message lookup obfuscation}
-Your device will request for messages using conversation keys on a very regular basis to youy messaging(s) server(s).
+Your device will request for messages using conversation keys on a very regular basis to your messaging(s) server(s).
 The device will check for conversation keys for all your contacts. If you check that option, it will also check for hidden contact keys. 
-In case of data interception on your device link, in order to prevent statistical analysis, every request might be answered with random data.
+In case of data interception on your device link, in order to prevent statistical analysis, every request might be answered with size useful data (server's known server list).
 Moreover, some random keys will be added to your requests list.
 
 \subsubsection{Presence protocol for direct messaging TBC}

endtoend_test.go

@@ -130,9 +130,9 @@ func TestEndToEnd(t *testing.T) {
 		// Simulating server side processing //
 		///////////////////////////////////////
 		var server1 server.Identity
-		server1.ServerName = intS1.ServerData.Name
+		server1.ServerName = intS1.Name
 		server1.ServerKp = FriendServer1KP
-		server1.ServerDesc = intS1.ServerData.Description
+		server1.ServerDesc = intS1.Description
 		// Unpack
 		srv_from, srv_encmsg, srv_signature, err := server1.UnpackReceived(protoPackedServerMsg)
 		if err != nil {

go.mod

@@ -6,6 +6,7 @@ require (
 	github.com/ProtonMail/go-crypto v0.0.0-20230923063757-afb1ddc0824c // indirect
 	github.com/ProtonMail/gopenpgp/v2 v2.7.4
 	github.com/cloudflare/circl v1.3.6 // indirect
+	github.com/dgraph-io/badger v1.6.2
 	github.com/go-redis/redis v6.15.9+incompatible
 	github.com/google/uuid v1.5.0
 	github.com/makiuchi-d/gozxing v0.1.1

go.sum

@@ -1,24 +1,41 @@
+github.com/AndreasBriese/bbloom v0.0.0-20190825152654-46b345b51c96 h1:cTp8I5+VIoKjsnZuH8vjyaysT/ses3EvZeaV/1UkF2M=
+github.com/AndreasBriese/bbloom v0.0.0-20190825152654-46b345b51c96/go.mod h1:bOvUY6CB00SOBii9/FifXqc0awNKxLFCL/+pkDPuyl8=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/ProtonMail/go-crypto v0.0.0-20230717121422-5aa5874ade95/go.mod h1:EjAoLdwvbIOoOQr3ihjnSoLZRtE8azugULFRteWMNc0=
 github.com/ProtonMail/go-crypto v0.0.0-20230923063757-afb1ddc0824c h1:kMFnB0vCcX7IL/m9Y5LO+KQYv+t1CQOiFe6+SV2J7bE=
 github.com/ProtonMail/go-crypto v0.0.0-20230923063757-afb1ddc0824c/go.mod h1:EjAoLdwvbIOoOQr3ihjnSoLZRtE8azugULFRteWMNc0=
 github.com/ProtonMail/go-mime v0.0.0-20230322103455-7d82a3887f2f h1:tCbYj7/299ekTTXpdwKYF8eBlsYsDVoggDAuAjoK66k=
 github.com/ProtonMail/go-mime v0.0.0-20230322103455-7d82a3887f2f/go.mod h1:gcr0kNtGBqin9zDW9GOHcVntrwnjrK+qdJ06mWYBybw=
-github.com/ProtonMail/gopenpgp/v2 v2.7.3 h1:AJu1OI/1UWVYZl6QcCLKGu9OTngS2r52618uGlje84I=
-github.com/ProtonMail/gopenpgp/v2 v2.7.3/go.mod h1:IhkNEDaxec6NyzSI0PlxapinnwPVIESk8/76da3Ct3g=
 github.com/ProtonMail/gopenpgp/v2 v2.7.4 h1:Vz/8+HViFFnf2A6XX8JOvZMrA6F5puwNvvF21O1mRlo=
 github.com/ProtonMail/gopenpgp/v2 v2.7.4/go.mod h1:IhkNEDaxec6NyzSI0PlxapinnwPVIESk8/76da3Ct3g=
+github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 github.com/bwesterb/go-ristretto v1.2.3/go.mod h1:fUIoIZaG73pV5biE2Blr2xEzDoMj7NFEuV9ekS419A0=
+github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
+github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
-github.com/cloudflare/circl v1.3.3 h1:fE/Qz0QdIGqeWfnwq0RE0R7MI51s0M2E4Ga9kq5AEMs=
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 github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
+github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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+github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2 h1:tdlZCpZ/P9DhczCTSixgIKmwPv6+wP5DGjqLYw5SUiA=
+github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
+github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
+github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
@@ -27,6 +44,7 @@ github.com/go-redis/redis v6.15.9+incompatible/go.mod h1:NAIEuMOZ/fxfXJIrKDQDz8w
 github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
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 github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
@@ -34,6 +52,7 @@ github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:W
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 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
+github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw=
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 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
@@ -42,23 +61,30 @@ github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
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 github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
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@@ -79,6 +105,8 @@ github.com/onsi/gomega v1.20.1/go.mod h1:DtrZpjmvpn2mPm4YWQa0/ALMDj9v4YxLgojwPeR
 github.com/onsi/gomega v1.21.1/go.mod h1:iYAIXgPSaDHak0LCMA+AWBpIKBr8WZicMxnE8luStNc=
 github.com/onsi/gomega v1.22.1 h1:pY8O4lBfsHKZHM/6nrxkhVPUznOlIu3quZcKP/M20KI=
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@@ -86,20 +114,34 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
 github.com/rs/xid v1.5.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
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 golang.org/x/crypto v0.3.1-0.20221117191849-2c476679df9a/go.mod h1:hebNnKkNXi2UzZN1eVRvBB7co0a+JxK6XbPiWVs/3J4=
 golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU=
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@@ -131,8 +173,10 @@ golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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@@ -156,7 +200,6 @@ golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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 golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
 golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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 golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
@@ -176,7 +219,6 @@ golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
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-golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
 golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
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 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
@@ -190,8 +232,6 @@ golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2 h1:H2TDz8ibqkAF6YGhCdN3jS9O0/s90v0rJh3X/OLHEUk=
-golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2/go.mod h1:K8+ghG5WaK9qNqU5K3HdILfMLy1f3aNYFI/wnl100a8=
 golang.org/x/xerrors v0.0.0-20231012003039-104605ab7028 h1:+cNy6SZtPcJQH3LJVLOSmiC7MMxXNOb3PU/VUEz+EhU=
 golang.org/x/xerrors v0.0.0-20231012003039-104605ab7028/go.mod h1:NDW/Ps6MPRej6fsCIbMTohpP40sJ/P/vI1MoTEGwX90=
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@@ -203,12 +243,11 @@ google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2
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-google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
-google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
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 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=

servercard.go

@@ -1,5 +1,10 @@
 package meowlib
 
+import (
+	"github.com/dgraph-io/badger"
+	"google.golang.org/protobuf/proto"
+)
+
 func (sc *ServerCard) GetUid() string {
 	return sc.Login + ":" + sc.Password + "@" + sc.Url
 }
@@ -7,3 +12,101 @@ func (sc *ServerCard) GetUid() string {
 func (sc *ServerCard) IsSame(sc1 *ServerCard) bool {
 	return sc.GetUid() == sc1.GetUid()
 }
+
+//
+// Storage
+//
+
+// Open a badger database
+func OpenBadgerDb(path string) (*badger.DB, error) {
+	opts := badger.DefaultOptions(path)
+	opts.Logger = nil
+	return badger.Open(opts)
+}
+
+// Store function stores a ServerCard in a badger database with servercard.GetUid() as key
+func (sc *ServerCard) Store(db *badger.DB) error {
+	// first marchal the ServerCard to bytes with protobuf
+	b, err := proto.Marshal(sc)
+	if err != nil {
+		return err
+	}
+	// then store it in the database
+	return db.Update(func(txn *badger.Txn) error {
+		return txn.Set([]byte(sc.GetUid()), b)
+	})
+}
+
+// LoadServerCard function loads a ServerCard from a badger database with servercard.GetUid() as key
+func LoadServerCard(db *badger.DB, uid string) (*ServerCard, error) {
+	var sc ServerCard
+	err := db.View(func(txn *badger.Txn) error {
+		item, err := txn.Get([]byte(uid))
+		if err != nil {
+			return err
+		}
+		return item.Value(func(val []byte) error {
+			return proto.Unmarshal(val, &sc)
+		})
+	})
+	return &sc, err
+}
+
+// DeleteServerCard function deletes a ServerCard from a badger database with servercard.GetUid() as key
+func DeleteServerCard(db *badger.DB, uid string) error {
+	return db.Update(func(txn *badger.Txn) error {
+		return txn.Delete([]byte(uid))
+	})
+}
+
+// LoadAllServerCards function loads all ServerCards from a badger database
+func LoadAllServerCards(db *badger.DB) ([]*ServerCard, error) {
+	var scs []*ServerCard
+	err := db.View(func(txn *badger.Txn) error {
+		opts := badger.DefaultIteratorOptions
+		opts.PrefetchSize = 10
+		it := txn.NewIterator(opts)
+		defer it.Close()
+		for it.Rewind(); it.Valid(); it.Next() {
+			item := it.Item()
+			var sc ServerCard
+			err := item.Value(func(val []byte) error {
+				return proto.Unmarshal(val, &sc)
+			})
+			if err != nil {
+				return err
+			}
+			scs = append(scs, &sc)
+		}
+		return nil
+	})
+	return scs, err
+}
+
+// LoadServerCardsFromUids function loads ServerCards with id in []Uid parameter from a badger database
+func LoadServerCardsFromUids(db *badger.DB, uids []string) ([]*ServerCard, error) {
+	var scs []*ServerCard
+	err := db.View(func(txn *badger.Txn) error {
+		for _, uid := range uids {
+			item, err := txn.Get([]byte(uid))
+			if err != nil {
+				return err
+			}
+			var sc ServerCard
+			err = item.Value(func(val []byte) error {
+				return proto.Unmarshal(val, &sc)
+			})
+			if err != nil {
+				return err
+			}
+			scs = append(scs, &sc)
+		}
+		return nil
+	})
+	return scs, err
+}
+
+// close a badger database
+func CloseBadgerDb(db *badger.DB) {
+	db.Close()
+}