ci: add ssh build

Reviewed-on: #251
Reviewed-by: lash <accounts-grassrootseconomics@holbrook.no>

Dockerfile

@@ -19,6 +19,7 @@ WORKDIR /build
 RUN echo "Building on $BUILDPLATFORM, building for $TARGETPLATFORM"
 RUN go mod download
 RUN go build -tags logtrace -o ussd-africastalking -ldflags="-X main.build=${BUILD} -s -w" cmd/africastalking/main.go
+RUN go build -tags logtrace -o ussd-ssh -ldflags="-X main.build=${BUILD} -s -w" cmd/ssh/main.go
 
 FROM debian:bookworm-slim
 
@@ -30,6 +31,7 @@ RUN apt-get clean && rm -rf /var/lib/apt/lists/*
 WORKDIR /service
 
 COPY --from=build /build/ussd-africastalking .
+COPY --from=build /build/ussd-ssh .
 COPY --from=build /build/LICENSE .
 COPY --from=build /build/README.md .
 COPY --from=build /build/services ./services

cmd/africastalking/main.go

@@ -1,35 +1,31 @@
 package main
 
 import (
-	"bytes"
 	"context"
-	"encoding/json"
 	"flag"
 	"fmt"
-	"io"
 	"net/http"
 	"os"
 	"os/signal"
 	"path"
 	"strconv"
-	"strings"
 	"syscall"
 
 	"git.defalsify.org/vise.git/engine"
 	"git.defalsify.org/vise.git/logging"
 	"git.defalsify.org/vise.git/resource"
 
-	"git.grassecon.net/urdt/ussd/common"
 	"git.grassecon.net/urdt/ussd/config"
 	"git.grassecon.net/urdt/ussd/initializers"
 	"git.grassecon.net/urdt/ussd/internal/handlers"
-	httpserver "git.grassecon.net/urdt/ussd/internal/http"
+	"git.grassecon.net/urdt/ussd/internal/http/at"
+	httpserver "git.grassecon.net/urdt/ussd/internal/http/at"
 	"git.grassecon.net/urdt/ussd/internal/storage"
 	"git.grassecon.net/urdt/ussd/remote"
 )
 
 var (
-	logg          = logging.NewVanilla()
+	logg          = logging.NewVanilla().WithDomain("AfricasTalking").WithContextKey("at-session-id")
 	scriptDir     = path.Join("services", "registration")
 	build         = "dev"
 	menuSeparator = ": "
@@ -38,72 +34,6 @@ var (
 func init() {
 	initializers.LoadEnvVariables()
 }
-
-type atRequestParser struct{}
-
-func (arp *atRequestParser) GetSessionId(rq any) (string, error) {
-	rqv, ok := rq.(*http.Request)
-	if !ok {
-		logg.Warnf("got an invalid request", "req", rq)
-		return "", handlers.ErrInvalidRequest
-	}
-
-	// Capture body (if any) for logging
-	body, err := io.ReadAll(rqv.Body)
-	if err != nil {
-		logg.Warnf("failed to read request body", "err", err)
-		return "", fmt.Errorf("failed to read request body: %v", err)
-	}
-	// Reset the body for further reading
-	rqv.Body = io.NopCloser(bytes.NewReader(body))
-
-	// Log the body as JSON
-	bodyLog := map[string]string{"body": string(body)}
-	logBytes, err := json.Marshal(bodyLog)
-	if err != nil {
-		logg.Warnf("failed to marshal request body", "err", err)
-	} else {
-		logg.Debugf("received request", "bytes", logBytes)
-	}
-
-	if err := rqv.ParseForm(); err != nil {
-		logg.Warnf("failed to parse form data", "err", err)
-		return "", fmt.Errorf("failed to parse form data: %v", err)
-	}
-
-	phoneNumber := rqv.FormValue("phoneNumber")
-	if phoneNumber == "" {
-		return "", fmt.Errorf("no phone number found")
-	}
-
-	formattedNumber, err := common.FormatPhoneNumber(phoneNumber)
-	if err != nil {
-		logg.Warnf("failed to format phone number", "err", err)
-		return "", fmt.Errorf("failed to format number")
-	}
-
-	return formattedNumber, nil
-}
-
-func (arp *atRequestParser) GetInput(rq any) ([]byte, error) {
-	rqv, ok := rq.(*http.Request)
-	if !ok {
-		return nil, handlers.ErrInvalidRequest
-	}
-	if err := rqv.ParseForm(); err != nil {
-		return nil, fmt.Errorf("failed to parse form data: %v", err)
-	}
-
-	text := rqv.FormValue("text")
-
-	parts := strings.Split(text, "*")
-	if len(parts) == 0 {
-		return nil, fmt.Errorf("no input found")
-	}
-
-	return []byte(parts[len(parts)-1]), nil
-}
-
 func main() {
 	config.LoadConfig()
 
@@ -191,7 +121,7 @@ func main() {
 	}
 	defer stateStore.Close()
 
-	rp := &atRequestParser{}
+	rp := &at.ATRequestParser{}
 	bsh := handlers.NewBaseSessionHandler(cfg, rs, stateStore, userdataStore, rp, hl)
 	sh := httpserver.NewATSessionHandler(bsh)
 

cmd/async/main.go

@@ -21,8 +21,8 @@ import (
 )
 
 var (
-	logg      = logging.NewVanilla()
-	scriptDir = path.Join("services", "registration")
+	logg          = logging.NewVanilla()
+	scriptDir     = path.Join("services", "registration")
 	menuSeparator = ": "
 )
 
@@ -35,7 +35,7 @@ type asyncRequestParser struct {
 	input     []byte
 }
 
-func (p *asyncRequestParser) GetSessionId(r any) (string, error) {
+func (p *asyncRequestParser) GetSessionId(ctx context.Context, r any) (string, error) {
 	return p.sessionId, nil
 }
 

cmd/ssh/README.md

@@ -0,0 +1,34 @@
+# URDT-USSD SSH server
+
+An SSH server entry point for the vise engine.
+
+
+## Adding public keys for access
+
+Map your (client) public key to a session identifier (e.g. phone number)
+
+```
+go run -v -tags logtrace ./cmd/ssh/sshkey/main.go -i <session_id> [--dbdir <dbpath>] <client_publickey_filepath>
+```
+
+
+## Create a private key for the server
+
+```
+ssh-keygen -N "" -f <server_privatekey_filepath>
+```
+
+
+## Run the server
+
+
+```
+go run -v -tags logtrace ./cmd/ssh/main.go -h <host> -p <port> [--dbdir <dbpath>] <server_privatekey_filepath>
+```
+
+
+## Connect to the server
+
+```
+ssh [-v] -T -p <port> -i <client_publickey_filepath> <host>
+```

cmd/ssh/main.go

@@ -0,0 +1,115 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"path"
+	"os"
+	"os/signal"
+	"sync"
+	"syscall"
+
+	"git.defalsify.org/vise.git/db"
+	"git.defalsify.org/vise.git/engine"
+	"git.defalsify.org/vise.git/logging"
+
+	"git.grassecon.net/urdt/ussd/internal/ssh"
+)
+
+var (
+	wg sync.WaitGroup
+	keyStore db.Db
+	logg      = logging.NewVanilla()
+	scriptDir = path.Join("services", "registration")
+)
+
+func main() {
+	var dbDir string
+	var resourceDir string
+	var size uint
+	var engineDebug bool
+	var stateDebug bool
+	var host string
+	var port uint
+	flag.StringVar(&dbDir, "dbdir", ".state", "database dir to read from")
+	flag.StringVar(&resourceDir, "resourcedir", path.Join("services", "registration"), "resource dir")
+	flag.BoolVar(&engineDebug, "engine-debug", false, "use engine debug output")
+	flag.BoolVar(&stateDebug, "state-debug", false, "use engine debug output")
+	flag.UintVar(&size, "s", 160, "max size of output")
+	flag.StringVar(&host, "h", "127.0.0.1", "http host")
+	flag.UintVar(&port, "p", 7122, "http port")
+	flag.Parse()
+
+	sshKeyFile := flag.Arg(0)
+	_, err := os.Stat(sshKeyFile)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "cannot open ssh server private key file: %v\n", err)
+		os.Exit(1)
+	}
+
+	ctx := context.Background()
+	logg.WarnCtxf(ctx, "!!!!! WARNING WARNING WARNING")
+	logg.WarnCtxf(ctx, "!!!!! =======================")
+	logg.WarnCtxf(ctx, "!!!!! This is not a production ready server!")
+	logg.WarnCtxf(ctx, "!!!!! Do not expose to internet and only use with tunnel!")
+	logg.WarnCtxf(ctx, "!!!!! (See ssh -L <...>)")
+
+	logg.Infof("start command", "dbdir", dbDir, "resourcedir", resourceDir, "outputsize", size, "keyfile", sshKeyFile, "host", host, "port", port)
+
+	pfp := path.Join(scriptDir, "pp.csv")
+
+	cfg := engine.Config{
+		Root:       "root",
+		OutputSize: uint32(size),
+		FlagCount:  uint32(16),
+	}
+	if stateDebug {
+		cfg.StateDebug = true
+	}
+	if engineDebug {
+		cfg.EngineDebug = true
+	}
+
+	authKeyStore, err := ssh.NewSshKeyStore(ctx, dbDir)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "keystore file open error: %v", err)
+		os.Exit(1)
+	}
+	defer func () {
+		logg.TraceCtxf(ctx, "shutdown auth key store reached")
+		err = authKeyStore.Close()
+		if err != nil {
+			logg.ErrorCtxf(ctx, "keystore close error", "err", err)
+		}
+	}()
+
+	cint := make(chan os.Signal)
+	cterm := make(chan os.Signal)
+	signal.Notify(cint, os.Interrupt, syscall.SIGINT)
+	signal.Notify(cterm, os.Interrupt, syscall.SIGTERM)
+
+	runner := &ssh.SshRunner{
+		Cfg: cfg,
+		Debug: engineDebug,
+		FlagFile: pfp,
+		DbDir: dbDir,
+		ResourceDir: resourceDir,
+		SrvKeyFile: sshKeyFile,
+		Host: host,
+		Port: port,
+	}
+	go func() {
+		select {
+		case _ = <-cint:
+		case _ = <-cterm:
+		}
+		logg.TraceCtxf(ctx, "shutdown runner reached")
+		err := runner.Stop()
+		if err != nil {
+			logg.ErrorCtxf(ctx, "runner stop error", "err", err)
+		}
+		
+	}()
+	runner.Run(ctx, authKeyStore)
+}

cmd/ssh/sshkey/main.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"os"
+
+	"git.grassecon.net/urdt/ussd/internal/ssh"
+)
+
+func main() {
+	var dbDir string
+	var sessionId string
+	flag.StringVar(&dbDir, "dbdir", ".state", "database dir to read from")
+	flag.StringVar(&sessionId, "i", "", "session id")
+	flag.Parse()
+
+	if sessionId == "" {
+		fmt.Fprintf(os.Stderr, "empty session id\n")
+		os.Exit(1)
+	}
+
+	ctx := context.Background()
+
+	sshKeyFile := flag.Arg(0)
+	if sshKeyFile == "" {
+		fmt.Fprintf(os.Stderr, "missing key file argument\n")
+		os.Exit(1)
+	}
+
+	store, err := ssh.NewSshKeyStore(ctx, dbDir)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "%v\n", err)
+		os.Exit(1)
+	}
+	defer store.Close()
+
+	err = store.AddFromFile(ctx, sshKeyFile, sessionId)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "%v\n", err)
+		os.Exit(1)
+	}
+}

common/pin.go

@@ -0,0 +1,33 @@
+package common
+
+import (
+	"regexp"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+// Define the regex pattern as a constant
+const (
+	pinPattern = `^\d{4}$`
+)
+
+// checks whether the given input is a 4 digit number
+func IsValidPIN(pin string) bool {
+	match, _ := regexp.MatchString(pinPattern, pin)
+	return match
+}
+
+// HashPIN uses bcrypt with 8 salt rounds to hash the PIN
+func HashPIN(pin string) (string, error) {
+	hash, err := bcrypt.GenerateFromPassword([]byte(pin), 8)
+	if err != nil {
+		return "", err
+	}
+	return string(hash), nil
+}
+
+// VerifyPIN compareS the hashed PIN with the plaintext PIN
+func VerifyPIN(hashedPIN, pin string) bool {
+	err := bcrypt.CompareHashAndPassword([]byte(hashedPIN), []byte(pin))
+	return err == nil
+}

common/pin_test.go

@@ -0,0 +1,173 @@
+package common
+
+import (
+	"testing"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+func TestIsValidPIN(t *testing.T) {
+	tests := []struct {
+		name     string
+		pin      string
+		expected bool
+	}{
+		{
+			name:     "Valid PIN with 4 digits",
+			pin:      "1234",
+			expected: true,
+		},
+		{
+			name:     "Valid PIN with leading zeros",
+			pin:      "0001",
+			expected: true,
+		},
+		{
+			name:     "Invalid PIN with less than 4 digits",
+			pin:      "123",
+			expected: false,
+		},
+		{
+			name:     "Invalid PIN with more than 4 digits",
+			pin:      "12345",
+			expected: false,
+		},
+		{
+			name:     "Invalid PIN with letters",
+			pin:      "abcd",
+			expected: false,
+		},
+		{
+			name:     "Invalid PIN with special characters",
+			pin:      "12@#",
+			expected: false,
+		},
+		{
+			name:     "Empty PIN",
+			pin:      "",
+			expected: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			actual := IsValidPIN(tt.pin)
+			if actual != tt.expected {
+				t.Errorf("IsValidPIN(%q) = %v; expected %v", tt.pin, actual, tt.expected)
+			}
+		})
+	}
+}
+
+func TestHashPIN(t *testing.T) {
+	tests := []struct {
+		name string
+		pin  string
+	}{
+		{
+			name: "Valid PIN with 4 digits",
+			pin:  "1234",
+		},
+		{
+			name: "Valid PIN with leading zeros",
+			pin:  "0001",
+		},
+		{
+			name: "Empty PIN",
+			pin:  "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			hashedPIN, err := HashPIN(tt.pin)
+			if err != nil {
+				t.Errorf("HashPIN(%q) returned an error: %v", tt.pin, err)
+				return
+			}
+
+			if hashedPIN == "" {
+				t.Errorf("HashPIN(%q) returned an empty hash", tt.pin)
+			}
+
+			// Ensure the hash can be verified with bcrypt
+			err = bcrypt.CompareHashAndPassword([]byte(hashedPIN), []byte(tt.pin))
+			if tt.pin != "" && err != nil {
+				t.Errorf("HashPIN(%q) produced a hash that does not match: %v", tt.pin, err)
+			}
+		})
+	}
+}
+
+func TestVerifyMigratedHashPin(t *testing.T) {
+	tests := []struct {
+		pin  string
+		hash string
+	}{
+		{
+			pin:  "1234",
+			hash: "$2b$08$dTvIGxCCysJtdvrSnaLStuylPoOS/ZLYYkxvTeR5QmTFY3TSvPQC6",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.pin, func(t *testing.T) {
+			ok := VerifyPIN(tt.hash, tt.pin)
+			if !ok {
+				t.Errorf("VerifyPIN could not verify migrated PIN: %v", tt.pin)
+			}
+		})
+	}
+}
+
+func TestVerifyPIN(t *testing.T) {
+	tests := []struct {
+		name       string
+		pin        string
+		hashedPIN  string
+		shouldPass bool
+	}{
+		{
+			name:       "Valid PIN verification",
+			pin:        "1234",
+			hashedPIN:  hashPINHelper("1234"),
+			shouldPass: true,
+		},
+		{
+			name:       "Invalid PIN verification with incorrect PIN",
+			pin:        "5678",
+			hashedPIN:  hashPINHelper("1234"),
+			shouldPass: false,
+		},
+		{
+			name:       "Invalid PIN verification with empty PIN",
+			pin:        "",
+			hashedPIN:  hashPINHelper("1234"),
+			shouldPass: false,
+		},
+		{
+			name:       "Invalid PIN verification with invalid hash",
+			pin:        "1234",
+			hashedPIN:  "invalidhash",
+			shouldPass: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := VerifyPIN(tt.hashedPIN, tt.pin)
+			if result != tt.shouldPass {
+				t.Errorf("VerifyPIN(%q, %q) = %v; expected %v", tt.hashedPIN, tt.pin, result, tt.shouldPass)
+			}
+		})
+	}
+}
+
+// Helper function to hash a PIN for testing purposes
+func hashPINHelper(pin string) string {
+	hashedPIN, err := HashPIN(pin)
+	if err != nil {
+		panic("Failed to hash PIN for test setup: " + err.Error())
+	}
+	return hashedPIN
+}

common/storage.go

@@ -8,14 +8,15 @@ import (
 	"git.defalsify.org/vise.git/resource"
 	"git.defalsify.org/vise.git/persist"
 	"git.grassecon.net/urdt/ussd/internal/storage"
+	dbstorage "git.grassecon.net/urdt/ussd/internal/storage/db"
 )
 
 func StoreToDb(store *UserDataStore) db.Db {
 	return store.Db
 }
 
-func StoreToPrefixDb(store *UserDataStore, pfx []byte) storage.PrefixDb {
-	return storage.NewSubPrefixDb(store.Db, pfx)	
+func StoreToPrefixDb(store *UserDataStore, pfx []byte) dbstorage.PrefixDb {
+	return dbstorage.NewSubPrefixDb(store.Db, pfx)	
 }
 
 type StorageServices interface {

common/transfer_statements.go

@@ -6,7 +6,7 @@ import (
 	"strings"
 	"time"
 
-	"git.grassecon.net/urdt/ussd/internal/storage"
+	dbstorage "git.grassecon.net/urdt/ussd/internal/storage/db"
 	dataserviceapi "github.com/grassrootseconomics/ussd-data-service/pkg/api"
 )
 
@@ -56,7 +56,7 @@ func ProcessTransfers(transfers []dataserviceapi.Last10TxResponse) TransferMetad
 
 // GetTransferData retrieves and matches transfer data
 // returns a formatted string of the full transaction/statement
-func GetTransferData(ctx context.Context, db storage.PrefixDb, publicKey string, index int) (string, error) {
+func GetTransferData(ctx context.Context, db dbstorage.PrefixDb, publicKey string, index int) (string, error) {
 	keys := []DataTyp{DATA_TX_SENDERS, DATA_TX_RECIPIENTS, DATA_TX_VALUES, DATA_TX_ADDRESSES, DATA_TX_HASHES, DATA_TX_DATES, DATA_TX_SYMBOLS}
 	data := make(map[DataTyp]string)
 

common/vouchers.go

@@ -6,7 +6,7 @@ import (
 	"math/big"
 	"strings"
 
-	"git.grassecon.net/urdt/ussd/internal/storage"
+	dbstorage "git.grassecon.net/urdt/ussd/internal/storage/db"
 	dataserviceapi "github.com/grassrootseconomics/ussd-data-service/pkg/api"
 )
 
@@ -63,7 +63,7 @@ func ScaleDownBalance(balance, decimals string) string {
 }
 
 // GetVoucherData retrieves and matches voucher data
-func GetVoucherData(ctx context.Context, db storage.PrefixDb, input string) (*dataserviceapi.TokenHoldings, error) {
+func GetVoucherData(ctx context.Context, db dbstorage.PrefixDb, input string) (*dataserviceapi.TokenHoldings, error) {
 	keys := []DataTyp{DATA_VOUCHER_SYMBOLS, DATA_VOUCHER_BALANCES, DATA_VOUCHER_DECIMALS, DATA_VOUCHER_ADDRESSES}
 	data := make(map[DataTyp]string)
 

common/vouchers_test.go

@@ -10,7 +10,7 @@ import (
 
 	visedb "git.defalsify.org/vise.git/db"
 	memdb "git.defalsify.org/vise.git/db/mem"
-	"git.grassecon.net/urdt/ussd/internal/storage"
+	dbstorage "git.grassecon.net/urdt/ussd/internal/storage/db"
 	dataserviceapi "github.com/grassrootseconomics/ussd-data-service/pkg/api"
 )
 
@@ -86,7 +86,7 @@ func TestGetVoucherData(t *testing.T) {
 	}
 
 	prefix := ToBytes(visedb.DATATYPE_USERDATA)
-	spdb := storage.NewSubPrefixDb(db, prefix)
+	spdb := dbstorage.NewSubPrefixDb(db, prefix)
 
 	// Test voucher data
 	mockData := map[DataTyp][]byte{

go.mod

@@ -3,7 +3,7 @@ module git.grassecon.net/urdt/ussd
 go 1.23.0
 
 require (
-	git.defalsify.org/vise.git v0.2.3-0.20241231085136-8582c7e157d9
+	git.defalsify.org/vise.git v0.2.3-0.20250103172917-3e190a44568d
 	github.com/alecthomas/assert/v2 v2.2.2
 	github.com/gofrs/uuid v4.4.0+incompatible
 	github.com/grassrootseconomics/eth-custodial v1.3.0-beta
@@ -11,6 +11,7 @@ require (
 	github.com/joho/godotenv v1.5.1
 	github.com/peteole/testdata-loader v0.3.0
 	github.com/stretchr/testify v1.9.0
+	golang.org/x/crypto v0.27.0
 	gopkg.in/leonelquinteros/gotext.v1 v1.3.1
 )
 
@@ -32,7 +33,6 @@ require (
 	github.com/rogpeppe/go-internal v1.13.1 // indirect
 	github.com/stretchr/objx v0.5.2 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
-	golang.org/x/crypto v0.27.0 // indirect
 	golang.org/x/sync v0.8.0 // indirect
 	golang.org/x/text v0.18.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect

go.sum

@@ -1,5 +1,5 @@
-git.defalsify.org/vise.git v0.2.3-0.20241231085136-8582c7e157d9 h1:O3m+NgWDWtJm8OculT99c4bDMAO4xLe2c8hpCKpsd9g=
-git.defalsify.org/vise.git v0.2.3-0.20241231085136-8582c7e157d9/go.mod h1:jyBMe1qTYUz3mmuoC9JQ/TvFeW0vTanCUcPu3H8p4Ck=
+git.defalsify.org/vise.git v0.2.3-0.20250103172917-3e190a44568d h1:bPAOVZOX4frSGhfOdcj7kc555f8dc9DmMd2YAyC2AMw=
+git.defalsify.org/vise.git v0.2.3-0.20250103172917-3e190a44568d/go.mod h1:jyBMe1qTYUz3mmuoC9JQ/TvFeW0vTanCUcPu3H8p4Ck=
 github.com/alecthomas/assert/v2 v2.2.2 h1:Z/iVC0xZfWTaFNE6bA3z07T86hd45Xe2eLt6WVy2bbk=
 github.com/alecthomas/assert/v2 v2.2.2/go.mod h1:pXcQ2Asjp247dahGEmsZ6ru0UVwnkhktn7S0bBDLxvQ=
 github.com/alecthomas/participle/v2 v2.0.0 h1:Fgrq+MbuSsJwIkw3fEj9h75vDP0Er5JzepJ0/HNHv0g=

internal/handlers/single.go

@@ -6,9 +6,9 @@ import (
 	"io"
 
 	"git.defalsify.org/vise.git/engine"
-	"git.defalsify.org/vise.git/resource"
-	"git.defalsify.org/vise.git/persist"
 	"git.defalsify.org/vise.git/logging"
+	"git.defalsify.org/vise.git/persist"
+	"git.defalsify.org/vise.git/resource"
 
 	"git.grassecon.net/urdt/ussd/internal/storage"
 )
@@ -20,33 +20,33 @@ var (
 var (
 	ErrInvalidRequest = errors.New("invalid request for context")
 	ErrSessionMissing = errors.New("missing session")
-	ErrInvalidInput = errors.New("invalid input")
-	ErrStorage = errors.New("storage retrieval fail")
-	ErrEngineType = errors.New("incompatible engine")
-	ErrEngineInit = errors.New("engine init fail")
-	ErrEngineExec = errors.New("engine exec fail")
+	ErrInvalidInput   = errors.New("invalid input")
+	ErrStorage        = errors.New("storage retrieval fail")
+	ErrEngineType     = errors.New("incompatible engine")
+	ErrEngineInit     = errors.New("engine init fail")
+	ErrEngineExec     = errors.New("engine exec fail")
 )
 
 type RequestSession struct {
-	Ctx context.Context
-	Config engine.Config
-	Engine engine.Engine
-	Input []byte
-	Storage *storage.Storage
-	Writer io.Writer
+	Ctx      context.Context
+	Config   engine.Config
+	Engine   engine.Engine
+	Input    []byte
+	Storage  *storage.Storage
+	Writer   io.Writer
 	Continue bool
 }
 
 // TODO: seems like can remove this.
 type RequestParser interface {
-	GetSessionId(rq any) (string, error)
+	GetSessionId(context context.Context, rq any) (string, error)
 	GetInput(rq any) ([]byte, error)
 }
 
 type RequestHandler interface {
 	GetConfig() engine.Config
 	GetRequestParser() RequestParser
-	GetEngine(cfg engine.Config, rs resource.Resource, pe *persist.Persister) engine.Engine 
+	GetEngine(cfg engine.Config, rs resource.Resource, pe *persist.Persister) engine.Engine
 	Process(rs RequestSession) (RequestSession, error)
 	Output(rs RequestSession) (RequestSession, error)
 	Reset(rs RequestSession) (RequestSession, error)

internal/handlers/ussd/menuhandler.go

@@ -5,7 +5,6 @@ import (
 	"context"
 	"fmt"
 	"path"
-	"regexp"
 	"strconv"
 	"strings"
 
@@ -24,27 +23,16 @@ import (
 	"git.grassecon.net/urdt/ussd/remote"
 	"gopkg.in/leonelquinteros/gotext.v1"
 
-	"git.grassecon.net/urdt/ussd/internal/storage"
+	dbstorage "git.grassecon.net/urdt/ussd/internal/storage/db"
 	dataserviceapi "github.com/grassrootseconomics/ussd-data-service/pkg/api"
 )
 
 var (
-	logg           = logging.NewVanilla().WithDomain("ussdmenuhandler")
+	logg           = logging.NewVanilla().WithDomain("ussdmenuhandler").WithContextKey("SessionId")
 	scriptDir      = path.Join("services", "registration")
 	translationDir = path.Join(scriptDir, "locale")
 )
 
-// Define the regex patterns as constants
-const (
-	pinPattern = `^\d{4}$`
-)
-
-// checks whether the given input is a 4 digit number
-func isValidPIN(pin string) bool {
-	match, _ := regexp.MatchString(pinPattern, pin)
-	return match
-}
-
 // FlagManager handles centralized flag management
 type FlagManager struct {
 	parser *asm.FlagParser
@@ -76,7 +64,7 @@ type Handlers struct {
 	adminstore           *utils.AdminStore
 	flagManager          *asm.FlagParser
 	accountService       remote.AccountServiceInterface
-	prefixDb             storage.PrefixDb
+	prefixDb             dbstorage.PrefixDb
 	profile              *models.Profile
 	ReplaceSeparatorFunc func(string) string
 }
@@ -92,7 +80,7 @@ func NewHandlers(appFlags *asm.FlagParser, userdataStore db.Db, adminstore *util
 
 	// Instantiate the SubPrefixDb with "DATATYPE_USERDATA" prefix
 	prefix := common.ToBytes(db.DATATYPE_USERDATA)
-	prefixDb := storage.NewSubPrefixDb(userdataStore, prefix)
+	prefixDb := dbstorage.NewSubPrefixDb(userdataStore, prefix)
 
 	h := &Handlers{
 		userdataStore:        userDb,
@@ -134,9 +122,12 @@ func (h *Handlers) Init(ctx context.Context, sym string, input []byte) (resource
 		h.st.Code = []byte{}
 	}
 
-	sessionId, _ := ctx.Value("SessionId").(string)
-	flag_admin_privilege, _ := h.flagManager.GetFlag("flag_admin_privilege")
+	sessionId, ok := ctx.Value("SessionId").(string)
+	if ok {
+		ctx = context.WithValue(ctx, "SessionId", sessionId)
+	}
 
+	flag_admin_privilege, _ := h.flagManager.GetFlag("flag_admin_privilege")
 	isAdmin, _ := h.adminstore.IsAdmin(sessionId)
 
 	if isAdmin {
@@ -281,7 +272,7 @@ func (h *Handlers) VerifyNewPin(ctx context.Context, sym string, input []byte) (
 	flag_valid_pin, _ := h.flagManager.GetFlag("flag_valid_pin")
 	pinInput := string(input)
 	// Validate that the PIN is a 4-digit number.
-	if isValidPIN(pinInput) {
+	if common.IsValidPIN(pinInput) {
 		res.FlagSet = append(res.FlagSet, flag_valid_pin)
 	} else {
 		res.FlagReset = append(res.FlagReset, flag_valid_pin)
@@ -306,7 +297,7 @@ func (h *Handlers) SaveTemporaryPin(ctx context.Context, sym string, input []byt
 	accountPIN := string(input)
 
 	// Validate that the PIN is a 4-digit number.
-	if !isValidPIN(accountPIN) {
+	if !common.IsValidPIN(accountPIN) {
 		res.FlagSet = append(res.FlagSet, flag_incorrect_pin)
 		return res, nil
 	}
@@ -368,11 +359,20 @@ func (h *Handlers) ConfirmPinChange(ctx context.Context, sym string, input []byt
 		res.FlagReset = append(res.FlagReset, flag_pin_mismatch)
 	} else {
 		res.FlagSet = append(res.FlagSet, flag_pin_mismatch)
+		return res, nil
 	}
-	// If matched, save the confirmed PIN as the new account PIN
-	err = store.WriteEntry(ctx, sessionId, common.DATA_ACCOUNT_PIN, []byte(temporaryPin))
+
+	// Hash the PIN
+	hashedPIN, err := common.HashPIN(string(temporaryPin))
 	if err != nil {
-		logg.ErrorCtxf(ctx, "failed to write temporaryPin entry with", "key", common.DATA_ACCOUNT_PIN, "value", temporaryPin, "error", err)
+		logg.ErrorCtxf(ctx, "failed to hash temporaryPin", "error", err)
+		return res, err
+	}
+
+	// save the hashed PIN as the new account PIN
+	err = store.WriteEntry(ctx, sessionId, common.DATA_ACCOUNT_PIN, []byte(hashedPIN))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to write DATA_ACCOUNT_PIN entry with", "key", common.DATA_ACCOUNT_PIN, "hashedPIN value", hashedPIN, "error", err)
 		return res, err
 	}
 	return res, nil
@@ -404,11 +404,19 @@ func (h *Handlers) VerifyCreatePin(ctx context.Context, sym string, input []byte
 		res.FlagSet = append(res.FlagSet, flag_pin_set)
 	} else {
 		res.FlagSet = []uint32{flag_pin_mismatch}
+		return res, nil
 	}
 
-	err = store.WriteEntry(ctx, sessionId, common.DATA_ACCOUNT_PIN, []byte(temporaryPin))
+	// Hash the PIN
+	hashedPIN, err := common.HashPIN(string(temporaryPin))
 	if err != nil {
-		logg.ErrorCtxf(ctx, "failed to write temporaryPin entry with", "key", common.DATA_ACCOUNT_PIN, "value", temporaryPin, "error", err)
+		logg.ErrorCtxf(ctx, "failed to hash temporaryPin", "error", err)
+		return res, err
+	}
+
+	err = store.WriteEntry(ctx, sessionId, common.DATA_ACCOUNT_PIN, []byte(hashedPIN))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to write DATA_ACCOUNT_PIN entry with", "key", common.DATA_ACCOUNT_PIN, "value", hashedPIN, "error", err)
 		return res, err
 	}
 
@@ -722,7 +730,7 @@ func (h *Handlers) Authorize(ctx context.Context, sym string, input []byte) (res
 		return res, err
 	}
 	if len(input) == 4 {
-		if bytes.Equal(input, AccountPin) {
+		if common.VerifyPIN(string(AccountPin), string(input)) {
 			if h.st.MatchFlag(flag_account_authorized, false) {
 				res.FlagReset = append(res.FlagReset, flag_incorrect_pin)
 				res.FlagSet = append(res.FlagSet, flag_allow_update, flag_account_authorized)
@@ -949,7 +957,15 @@ func (h *Handlers) ResetOthersPin(ctx context.Context, sym string, input []byte)
 		logg.ErrorCtxf(ctx, "failed to read temporaryPin entry with", "key", common.DATA_TEMPORARY_VALUE, "error", err)
 		return res, err
 	}
-	err = store.WriteEntry(ctx, string(blockedPhonenumber), common.DATA_ACCOUNT_PIN, []byte(temporaryPin))
+
+	// Hash the PIN
+	hashedPIN, err := common.HashPIN(string(temporaryPin))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to hash temporaryPin", "error", err)
+		return res, err
+	}
+
+	err = store.WriteEntry(ctx, string(blockedPhonenumber), common.DATA_ACCOUNT_PIN, []byte(hashedPIN))
 	if err != nil {
 		return res, nil
 	}
@@ -1400,7 +1416,6 @@ func (h *Handlers) GetCurrentProfileInfo(ctx context.Context, sym string, input
 		defaultValue = "Not Provided"
 	}
 
-
 	sm, _ := h.st.Where()
 	parts := strings.SplitN(sm, "_", 2)
 	filename := parts[1]

internal/handlers/ussd/menuhandler_test.go

@@ -13,7 +13,7 @@ import (
 	"git.defalsify.org/vise.git/persist"
 	"git.defalsify.org/vise.git/resource"
 	"git.defalsify.org/vise.git/state"
-	"git.grassecon.net/urdt/ussd/internal/storage"
+	dbstorage "git.grassecon.net/urdt/ussd/internal/storage/db"
 	"git.grassecon.net/urdt/ussd/internal/testutil/mocks"
 	"git.grassecon.net/urdt/ussd/internal/testutil/testservice"
 	"git.grassecon.net/urdt/ussd/internal/utils"
@@ -59,14 +59,14 @@ func InitializeTestStore(t *testing.T) (context.Context, *common.UserDataStore)
 	return ctx, store
 }
 
-func InitializeTestSubPrefixDb(t *testing.T, ctx context.Context) *storage.SubPrefixDb {
+func InitializeTestSubPrefixDb(t *testing.T, ctx context.Context) *dbstorage.SubPrefixDb {
 	db := memdb.NewMemDb()
 	err := db.Connect(ctx, "")
 	if err != nil {
 		t.Fatal(err)
 	}
 	prefix := common.ToBytes(visedb.DATATYPE_USERDATA)
-	spdb := storage.NewSubPrefixDb(db, prefix)
+	spdb := dbstorage.NewSubPrefixDb(db, prefix)
 
 	return spdb
 }
@@ -1047,7 +1047,14 @@ func TestAuthorize(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			err = store.WriteEntry(ctx, sessionId, common.DATA_ACCOUNT_PIN, []byte(accountPIN))
+			// Hash the PIN
+			hashedPIN, err := common.HashPIN(accountPIN)
+			if err != nil {
+				logg.ErrorCtxf(ctx, "failed to hash temporaryPin", "error", err)
+				t.Fatal(err)
+			}
+
+			err = store.WriteEntry(ctx, sessionId, common.DATA_ACCOUNT_PIN, []byte(hashedPIN))
 			if err != nil {
 				t.Fatal(err)
 			}
@@ -1499,59 +1506,6 @@ func TestQuit(t *testing.T) {
 	}
 }
 
-func TestIsValidPIN(t *testing.T) {
-	tests := []struct {
-		name     string
-		pin      string
-		expected bool
-	}{
-		{
-			name:     "Valid PIN with 4 digits",
-			pin:      "1234",
-			expected: true,
-		},
-		{
-			name:     "Valid PIN with leading zeros",
-			pin:      "0001",
-			expected: true,
-		},
-		{
-			name:     "Invalid PIN with less than 4 digits",
-			pin:      "123",
-			expected: false,
-		},
-		{
-			name:     "Invalid PIN with more than 4 digits",
-			pin:      "12345",
-			expected: false,
-		},
-		{
-			name:     "Invalid PIN with letters",
-			pin:      "abcd",
-			expected: false,
-		},
-		{
-			name:     "Invalid PIN with special characters",
-			pin:      "12@#",
-			expected: false,
-		},
-		{
-			name:     "Empty PIN",
-			pin:      "",
-			expected: false,
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			actual := isValidPIN(tt.pin)
-			if actual != tt.expected {
-				t.Errorf("isValidPIN(%q) = %v; expected %v", tt.pin, actual, tt.expected)
-			}
-		})
-	}
-}
-
 func TestValidateAmount(t *testing.T) {
 	fm, err := NewFlagManager(flagsPath)
 	if err != nil {

internal/http/at/parse.go

@@ -0,0 +1,119 @@
+package at
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+
+	"git.grassecon.net/urdt/ussd/common"
+	"git.grassecon.net/urdt/ussd/internal/handlers"
+)
+
+type ATRequestParser struct {
+}
+
+func (arp *ATRequestParser) GetSessionId(ctx context.Context, rq any) (string, error) {
+	rqv, ok := rq.(*http.Request)
+	if !ok {
+		logg.Warnf("got an invalid request", "req", rq)
+		return "", handlers.ErrInvalidRequest
+	}
+	// Capture body (if any) for logging
+	body, err := io.ReadAll(rqv.Body)
+	if err != nil {
+		logg.Warnf("failed to read request body", "err", err)
+		return "", fmt.Errorf("failed to read request body: %v", err)
+	}
+	// Reset the body for further reading
+	rqv.Body = io.NopCloser(bytes.NewReader(body))
+
+	// Log the body as JSON
+	bodyLog := map[string]string{"body": string(body)}
+	logBytes, err := json.Marshal(bodyLog)
+	if err != nil {
+		logg.Warnf("failed to marshal request body", "err", err)
+	} else {
+		decodedStr := string(logBytes)
+		sessionId, err := extractATSessionId(decodedStr)
+		if err != nil {
+			ctx = context.WithValue(ctx, "AT-SessionId", sessionId)
+		}
+		logg.DebugCtxf(ctx, "Received request:", decodedStr)
+	}
+
+	if err := rqv.ParseForm(); err != nil {
+		logg.Warnf("failed to parse form data", "err", err)
+		return "", fmt.Errorf("failed to parse form data: %v", err)
+	}
+
+	phoneNumber := rqv.FormValue("phoneNumber")
+	if phoneNumber == "" {
+		return "", fmt.Errorf("no phone number found")
+	}
+
+	formattedNumber, err := common.FormatPhoneNumber(phoneNumber)
+	if err != nil {
+		logg.Warnf("failed to format phone number", "err", err)
+		return "", fmt.Errorf("failed to format number")
+	}
+
+	return formattedNumber, nil
+}
+
+func (arp *ATRequestParser) GetInput(rq any) ([]byte, error) {
+	rqv, ok := rq.(*http.Request)
+	if !ok {
+		return nil, handlers.ErrInvalidRequest
+	}
+	if err := rqv.ParseForm(); err != nil {
+		return nil, fmt.Errorf("failed to parse form data: %v", err)
+	}
+
+	text := rqv.FormValue("text")
+
+	parts := strings.Split(text, "*")
+	if len(parts) == 0 {
+		return nil, fmt.Errorf("no input found")
+	}
+
+	return []byte(parts[len(parts)-1]), nil
+}
+
+func parseQueryParams(query string) map[string]string {
+	params := make(map[string]string)
+
+	queryParams := strings.Split(query, "&")
+	for _, param := range queryParams {
+		// Split each key-value pair by '='
+		parts := strings.SplitN(param, "=", 2)
+		if len(parts) == 2 {
+			params[parts[0]] = parts[1]
+		}
+	}
+	return params
+}
+
+func extractATSessionId(decodedStr string) (string, error) {
+	var data map[string]string
+	err := json.Unmarshal([]byte(decodedStr), &data)
+
+	if err != nil {
+		logg.Errorf("Error unmarshalling JSON: %v", err)
+		return "", nil
+	}
+	decodedBody, err := url.QueryUnescape(data["body"])
+	if err != nil {
+		logg.Errorf("Error URL-decoding body: %v", err)
+		return "", nil
+	}
+	params := parseQueryParams(decodedBody)
+
+	sessionId := params["sessionId"]
+	return sessionId, nil
+
+}

internal/http/at/server.go

@@ -1,19 +1,25 @@
-package http
+package at
 
 import (
 	"io"
 	"net/http"
 
+	"git.defalsify.org/vise.git/logging"
 	"git.grassecon.net/urdt/ussd/internal/handlers"
+	httpserver "git.grassecon.net/urdt/ussd/internal/http"
+)
+
+var (
+	logg = logging.NewVanilla().WithDomain("atserver").WithContextKey("SessionId").WithContextKey("AT-SessionId")
 )
 
 type ATSessionHandler struct {
-	*SessionHandler
+	*httpserver.SessionHandler
 }
 
 func NewATSessionHandler(h handlers.RequestHandler) *ATSessionHandler {
 	return &ATSessionHandler{
-		SessionHandler: ToSessionHandler(h),
+		SessionHandler: httpserver.ToSessionHandler(h),
 	}
 }
 
@@ -28,21 +34,21 @@ func (ash *ATSessionHandler) ServeHTTP(w http.ResponseWriter, req *http.Request)
 
 	rp := ash.GetRequestParser()
 	cfg := ash.GetConfig()
-	cfg.SessionId, err = rp.GetSessionId(req)
+	cfg.SessionId, err = rp.GetSessionId(req.Context(), req)
 	if err != nil {
 		logg.ErrorCtxf(rqs.Ctx, "", "header processing error", err)
-		ash.writeError(w, 400, err)
+		ash.WriteError(w, 400, err)
 		return
 	}
 	rqs.Config = cfg
 	rqs.Input, err = rp.GetInput(req)
 	if err != nil {
 		logg.ErrorCtxf(rqs.Ctx, "", "header processing error", err)
-		ash.writeError(w, 400, err)
+		ash.WriteError(w, 400, err)
 		return
 	}
 
-	rqs, err = ash.Process(rqs) 
+	rqs, err = ash.Process(rqs)
 	switch err {
 	case nil: // set code to 200 if no err
 		code = 200
@@ -53,7 +59,7 @@ func (ash *ATSessionHandler) ServeHTTP(w http.ResponseWriter, req *http.Request)
 	}
 
 	if code != 200 {
-		ash.writeError(w, 500, err)
+		ash.WriteError(w, 500, err)
 		return
 	}
 
@@ -61,13 +67,13 @@ func (ash *ATSessionHandler) ServeHTTP(w http.ResponseWriter, req *http.Request)
 	w.Header().Set("Content-Type", "text/plain")
 	rqs, err = ash.Output(rqs)
 	if err != nil {
-		ash.writeError(w, 500, err)
+		ash.WriteError(w, 500, err)
 		return
 	}
 
 	rqs, err = ash.Reset(rqs)
 	if err != nil {
-		ash.writeError(w, 500, err)
+		ash.WriteError(w, 500, err)
 		return
 	}
 }
@@ -89,4 +95,4 @@ func (ash *ATSessionHandler) Output(rqs handlers.RequestSession) (handlers.Reque
 
 	_, err = rqs.Engine.Flush(rqs.Ctx, rqs.Writer)
 	return rqs, err
-}
+}

internal/http/at/server_test.go

@@ -1,7 +1,6 @@
-package http
+package at
 
 import (
-	"bytes"
 	"context"
 	"errors"
 	"io"
@@ -16,16 +15,6 @@ import (
 	"git.grassecon.net/urdt/ussd/internal/testutil/mocks/httpmocks"
 )
 
-// invalidRequestType is a custom type to test invalid request scenarios
-type invalidRequestType struct{}
-
-// errorReader is a helper type that always returns an error when Read is called
-type errorReader struct{}
-
-func (e *errorReader) Read(p []byte) (n int, err error) {
-	return 0, errors.New("read error")
-}
-
 func TestNewATSessionHandler(t *testing.T) {
 	mockHandler := &httpmocks.MockRequestHandler{}
 	ash := NewATSessionHandler(mockHandler)
@@ -242,208 +231,4 @@ func TestATSessionHandler_Output(t *testing.T) {
 	}
 }
 
-func TestSessionHandler_ServeHTTP(t *testing.T) {
-	tests := []struct {
-		name           string
-		sessionID      string
-		input          []byte
-		parserErr      error
-		processErr     error
-		outputErr      error
-		resetErr       error
-		expectedStatus int
-	}{
-		{
-			name:           "Success",
-			sessionID:      "123",
-			input:          []byte("test input"),
-			expectedStatus: http.StatusOK,
-		},
-		{
-			name:           "Missing Session ID",
-			sessionID:      "",
-			parserErr:      handlers.ErrSessionMissing,
-			expectedStatus: http.StatusBadRequest,
-		},
-		{
-			name:           "Process Error",
-			sessionID:      "123",
-			input:          []byte("test input"),
-			processErr:     handlers.ErrStorage,
-			expectedStatus: http.StatusInternalServerError,
-		},
-		{
-			name:           "Output Error",
-			sessionID:      "123",
-			input:          []byte("test input"),
-			outputErr:      errors.New("output error"),
-			expectedStatus: http.StatusOK,
-		},
-		{
-			name:           "Reset Error",
-			sessionID:      "123",
-			input:          []byte("test input"),
-			resetErr:       errors.New("reset error"),
-			expectedStatus: http.StatusOK,
-		},
-	}
 
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			mockRequestParser := &httpmocks.MockRequestParser{
-				GetSessionIdFunc: func(any) (string, error) {
-					return tt.sessionID, tt.parserErr
-				},
-				GetInputFunc: func(any) ([]byte, error) {
-					return tt.input, nil
-				},
-			}
-
-			mockRequestHandler := &httpmocks.MockRequestHandler{
-				ProcessFunc: func(rs handlers.RequestSession) (handlers.RequestSession, error) {
-					return rs, tt.processErr
-				},
-				OutputFunc: func(rs handlers.RequestSession) (handlers.RequestSession, error) {
-					return rs, tt.outputErr
-				},
-				ResetFunc: func(rs handlers.RequestSession) (handlers.RequestSession, error) {
-					return rs, tt.resetErr
-				},
-				GetRequestParserFunc: func() handlers.RequestParser {
-					return mockRequestParser
-				},
-				GetConfigFunc: func() engine.Config {
-					return engine.Config{}
-				},
-			}
-
-			sessionHandler := ToSessionHandler(mockRequestHandler)
-
-			req := httptest.NewRequest(http.MethodPost, "/", bytes.NewBuffer(tt.input))
-			req.Header.Set("X-Vise-Session", tt.sessionID)
-
-			rr := httptest.NewRecorder()
-
-			sessionHandler.ServeHTTP(rr, req)
-
-			if status := rr.Code; status != tt.expectedStatus {
-				t.Errorf("handler returned wrong status code: got %v want %v",
-					status, tt.expectedStatus)
-			}
-		})
-	}
-}
-
-func TestSessionHandler_writeError(t *testing.T) {
-	handler := &SessionHandler{}
-	mockWriter := &httpmocks.MockWriter{}
-	err := errors.New("test error")
-
-	handler.writeError(mockWriter, http.StatusBadRequest, err)
-
-	if mockWriter.WrittenString != "" {
-		t.Errorf("Expected empty body, got %s", mockWriter.WrittenString)
-	}
-}
-
-func TestDefaultRequestParser_GetSessionId(t *testing.T) {
-	tests := []struct {
-		name          string
-		request       any
-		expectedID    string
-		expectedError error
-	}{
-		{
-			name: "Valid Session ID",
-			request: func() *http.Request {
-				req := httptest.NewRequest(http.MethodPost, "/", nil)
-				req.Header.Set("X-Vise-Session", "123456")
-				return req
-			}(),
-			expectedID:    "123456",
-			expectedError: nil,
-		},
-		{
-			name:          "Missing Session ID",
-			request:       httptest.NewRequest(http.MethodPost, "/", nil),
-			expectedID:    "",
-			expectedError: handlers.ErrSessionMissing,
-		},
-		{
-			name:          "Invalid Request Type",
-			request:       invalidRequestType{},
-			expectedID:    "",
-			expectedError: handlers.ErrInvalidRequest,
-		},
-	}
-
-	parser := &DefaultRequestParser{}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			id, err := parser.GetSessionId(tt.request)
-
-			if id != tt.expectedID {
-				t.Errorf("Expected session ID %s, got %s", tt.expectedID, id)
-			}
-
-			if err != tt.expectedError {
-				t.Errorf("Expected error %v, got %v", tt.expectedError, err)
-			}
-		})
-	}
-}
-
-func TestDefaultRequestParser_GetInput(t *testing.T) {
-	tests := []struct {
-		name          string
-		request       any
-		expectedInput []byte
-		expectedError error
-	}{
-		{
-			name: "Valid Input",
-			request: func() *http.Request {
-				return httptest.NewRequest(http.MethodPost, "/", bytes.NewBufferString("test input"))
-			}(),
-			expectedInput: []byte("test input"),
-			expectedError: nil,
-		},
-		{
-			name:          "Empty Input",
-			request:       httptest.NewRequest(http.MethodPost, "/", nil),
-			expectedInput: []byte{},
-			expectedError: nil,
-		},
-		{
-			name:          "Invalid Request Type",
-			request:       invalidRequestType{},
-			expectedInput: nil,
-			expectedError: handlers.ErrInvalidRequest,
-		},
-		{
-			name: "Read Error",
-			request: func() *http.Request {
-				return httptest.NewRequest(http.MethodPost, "/", &errorReader{})
-			}(),
-			expectedInput: nil,
-			expectedError: errors.New("read error"),
-		},
-	}
-
-	parser := &DefaultRequestParser{}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			input, err := parser.GetInput(tt.request)
-
-			if !bytes.Equal(input, tt.expectedInput) {
-				t.Errorf("Expected input %s, got %s", tt.expectedInput, input)
-			}
-
-			if err != tt.expectedError && (err == nil || err.Error() != tt.expectedError.Error()) {
-				t.Errorf("Expected error %v, got %v", tt.expectedError, err)
-			}
-		})
-	}
-}

internal/http/parse.go

@@ -0,0 +1,37 @@
+package http
+
+import (
+	"context"
+	"io/ioutil"
+	"net/http"
+
+	"git.grassecon.net/urdt/ussd/internal/handlers"
+)
+
+type DefaultRequestParser struct {
+}
+
+func (rp *DefaultRequestParser) GetSessionId(ctx context.Context, rq any) (string, error) {
+	rqv, ok := rq.(*http.Request)
+	if !ok {
+		return "", handlers.ErrInvalidRequest
+	}
+	v := rqv.Header.Get("X-Vise-Session")
+	if v == "" {
+		return "", handlers.ErrSessionMissing
+	}
+	return v, nil
+}
+
+func (rp *DefaultRequestParser) GetInput(rq any) ([]byte, error) {
+	rqv, ok := rq.(*http.Request)
+	if !ok {
+		return nil, handlers.ErrInvalidRequest
+	}
+	defer rqv.Body.Close()
+	v, err := ioutil.ReadAll(rqv.Body)
+	if err != nil {
+		return nil, err
+	}
+	return v, nil
+}

internal/http/server.go

@@ -1,7 +1,6 @@
 package http
 
 import (
-	"io/ioutil"
 	"net/http"
 	"strconv"
 
@@ -14,34 +13,6 @@ var (
 	logg = logging.NewVanilla().WithDomain("httpserver")
 )
 
-type DefaultRequestParser struct {
-}
-
-func (rp *DefaultRequestParser) GetSessionId(rq any) (string, error) {
-	rqv, ok := rq.(*http.Request)
-	if !ok {
-		return "", handlers.ErrInvalidRequest
-	}
-	v := rqv.Header.Get("X-Vise-Session")
-	if v == "" {
-		return "", handlers.ErrSessionMissing
-	}
-	return v, nil
-}
-
-func (rp *DefaultRequestParser) GetInput(rq any) ([]byte, error) {
-	rqv, ok := rq.(*http.Request)
-	if !ok {
-		return nil, handlers.ErrInvalidRequest
-	}
-	defer rqv.Body.Close()
-	v, err := ioutil.ReadAll(rqv.Body)
-	if err != nil {
-		return nil, err
-	}
-	return v, nil
-}
-
 type SessionHandler struct {
 	handlers.RequestHandler
 }
@@ -52,7 +23,7 @@ func ToSessionHandler(h handlers.RequestHandler) *SessionHandler {
 	}
 }
 
-func (f *SessionHandler) writeError(w http.ResponseWriter, code int, err error) {
+func (f *SessionHandler) WriteError(w http.ResponseWriter, code int, err error) {
 	s := err.Error()
 	w.Header().Set("Content-Length", strconv.Itoa(len(s)))
 	w.WriteHeader(code)
@@ -75,16 +46,16 @@ func (f *SessionHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 
 	rp := f.GetRequestParser()
 	cfg := f.GetConfig()
-	cfg.SessionId, err = rp.GetSessionId(req)
+	cfg.SessionId, err = rp.GetSessionId(req.Context(), req)
 	if err != nil {
 		logg.ErrorCtxf(rqs.Ctx, "", "header processing error", err)
-		f.writeError(w, 400, err)
+		f.WriteError(w, 400, err)
 	}
 	rqs.Config = cfg
 	rqs.Input, err = rp.GetInput(req)
 	if err != nil {
 		logg.ErrorCtxf(rqs.Ctx, "", "header processing error", err)
-		f.writeError(w, 400, err)
+		f.WriteError(w, 400, err)
 		return
 	}
 
@@ -101,7 +72,7 @@ func (f *SessionHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 	}
 
 	if code != 200 {
-		f.writeError(w, 500, err)
+		f.WriteError(w, 500, err)
 		return
 	}
 
@@ -110,11 +81,11 @@ func (f *SessionHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 	rqs, err = f.Output(rqs)
 	rqs, perr = f.Reset(rqs)
 	if err != nil {
-		f.writeError(w, 500, err)
+		f.WriteError(w, 500, err)
 		return
 	}
 	if perr != nil {
-		f.writeError(w, 500, perr)
+		f.WriteError(w, 500, perr)
 		return
 	}
 }

internal/http/server_test.go

@@ -0,0 +1,230 @@
+package http
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"git.defalsify.org/vise.git/engine"
+	"git.grassecon.net/urdt/ussd/internal/handlers"
+	"git.grassecon.net/urdt/ussd/internal/testutil/mocks/httpmocks"
+)
+
+// invalidRequestType is a custom type to test invalid request scenarios
+type invalidRequestType struct{}
+
+// errorReader is a helper type that always returns an error when Read is called
+type errorReader struct{}
+
+func (e *errorReader) Read(p []byte) (n int, err error) {
+	return 0, errors.New("read error")
+}
+
+func TestSessionHandler_ServeHTTP(t *testing.T) {
+	tests := []struct {
+		name           string
+		sessionID      string
+		input          []byte
+		parserErr      error
+		processErr     error
+		outputErr      error
+		resetErr       error
+		expectedStatus int
+	}{
+		{
+			name:           "Success",
+			sessionID:      "123",
+			input:          []byte("test input"),
+			expectedStatus: http.StatusOK,
+		},
+		{
+			name:           "Missing Session ID",
+			sessionID:      "",
+			parserErr:      handlers.ErrSessionMissing,
+			expectedStatus: http.StatusBadRequest,
+		},
+		{
+			name:           "Process Error",
+			sessionID:      "123",
+			input:          []byte("test input"),
+			processErr:     handlers.ErrStorage,
+			expectedStatus: http.StatusInternalServerError,
+		},
+		{
+			name:           "Output Error",
+			sessionID:      "123",
+			input:          []byte("test input"),
+			outputErr:      errors.New("output error"),
+			expectedStatus: http.StatusOK,
+		},
+		{
+			name:           "Reset Error",
+			sessionID:      "123",
+			input:          []byte("test input"),
+			resetErr:       errors.New("reset error"),
+			expectedStatus: http.StatusOK,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			mockRequestParser := &httpmocks.MockRequestParser{
+				GetSessionIdFunc: func(any) (string, error) {
+					return tt.sessionID, tt.parserErr
+				},
+				GetInputFunc: func(any) ([]byte, error) {
+					return tt.input, nil
+				},
+			}
+
+			mockRequestHandler := &httpmocks.MockRequestHandler{
+				ProcessFunc: func(rs handlers.RequestSession) (handlers.RequestSession, error) {
+					return rs, tt.processErr
+				},
+				OutputFunc: func(rs handlers.RequestSession) (handlers.RequestSession, error) {
+					return rs, tt.outputErr
+				},
+				ResetFunc: func(rs handlers.RequestSession) (handlers.RequestSession, error) {
+					return rs, tt.resetErr
+				},
+				GetRequestParserFunc: func() handlers.RequestParser {
+					return mockRequestParser
+				},
+				GetConfigFunc: func() engine.Config {
+					return engine.Config{}
+				},
+			}
+
+			sessionHandler := ToSessionHandler(mockRequestHandler)
+
+			req := httptest.NewRequest(http.MethodPost, "/", bytes.NewBuffer(tt.input))
+			req.Header.Set("X-Vise-Session", tt.sessionID)
+
+			rr := httptest.NewRecorder()
+
+			sessionHandler.ServeHTTP(rr, req)
+
+			if status := rr.Code; status != tt.expectedStatus {
+				t.Errorf("handler returned wrong status code: got %v want %v",
+					status, tt.expectedStatus)
+			}
+		})
+	}
+}
+
+func TestSessionHandler_WriteError(t *testing.T) {
+	handler := &SessionHandler{}
+	mockWriter := &httpmocks.MockWriter{}
+	err := errors.New("test error")
+
+	handler.WriteError(mockWriter, http.StatusBadRequest, err)
+
+	if mockWriter.WrittenString != "" {
+		t.Errorf("Expected empty body, got %s", mockWriter.WrittenString)
+	}
+}
+
+func TestDefaultRequestParser_GetSessionId(t *testing.T) {
+	tests := []struct {
+		name          string
+		request       any
+		expectedID    string
+		expectedError error
+	}{
+		{
+			name: "Valid Session ID",
+			request: func() *http.Request {
+				req := httptest.NewRequest(http.MethodPost, "/", nil)
+				req.Header.Set("X-Vise-Session", "123456")
+				return req
+			}(),
+			expectedID:    "123456",
+			expectedError: nil,
+		},
+		{
+			name:          "Missing Session ID",
+			request:       httptest.NewRequest(http.MethodPost, "/", nil),
+			expectedID:    "",
+			expectedError: handlers.ErrSessionMissing,
+		},
+		{
+			name:          "Invalid Request Type",
+			request:       invalidRequestType{},
+			expectedID:    "",
+			expectedError: handlers.ErrInvalidRequest,
+		},
+	}
+
+	parser := &DefaultRequestParser{}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			id, err := parser.GetSessionId(context.Background(),tt.request)
+
+			if id != tt.expectedID {
+				t.Errorf("Expected session ID %s, got %s", tt.expectedID, id)
+			}
+
+			if err != tt.expectedError {
+				t.Errorf("Expected error %v, got %v", tt.expectedError, err)
+			}
+		})
+	}
+}
+
+func TestDefaultRequestParser_GetInput(t *testing.T) {
+	tests := []struct {
+		name          string
+		request       any
+		expectedInput []byte
+		expectedError error
+	}{
+		{
+			name: "Valid Input",
+			request: func() *http.Request {
+				return httptest.NewRequest(http.MethodPost, "/", bytes.NewBufferString("test input"))
+			}(),
+			expectedInput: []byte("test input"),
+			expectedError: nil,
+		},
+		{
+			name:          "Empty Input",
+			request:       httptest.NewRequest(http.MethodPost, "/", nil),
+			expectedInput: []byte{},
+			expectedError: nil,
+		},
+		{
+			name:          "Invalid Request Type",
+			request:       invalidRequestType{},
+			expectedInput: nil,
+			expectedError: handlers.ErrInvalidRequest,
+		},
+		{
+			name: "Read Error",
+			request: func() *http.Request {
+				return httptest.NewRequest(http.MethodPost, "/", &errorReader{})
+			}(),
+			expectedInput: nil,
+			expectedError: errors.New("read error"),
+		},
+	}
+
+	parser := &DefaultRequestParser{}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			input, err := parser.GetInput(tt.request)
+
+			if !bytes.Equal(input, tt.expectedInput) {
+				t.Errorf("Expected input %s, got %s", tt.expectedInput, input)
+			}
+
+			if err != tt.expectedError && (err == nil || err.Error() != tt.expectedError.Error()) {
+				t.Errorf("Expected error %v, got %v", tt.expectedError, err)
+			}
+		})
+	}
+}

internal/ssh/keystore.go

@@ -0,0 +1,65 @@
+package ssh
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path"
+
+	"golang.org/x/crypto/ssh"
+
+	"git.defalsify.org/vise.git/db"
+
+	"git.grassecon.net/urdt/ussd/internal/storage"
+	dbstorage "git.grassecon.net/urdt/ussd/internal/storage/db/gdbm"
+)
+
+type SshKeyStore struct {
+	store db.Db
+}
+
+func NewSshKeyStore(ctx context.Context, dbDir string) (*SshKeyStore, error) {
+	keyStore := &SshKeyStore{}
+	keyStoreFile := path.Join(dbDir, "ssh_authorized_keys.gdbm")
+	keyStore.store = dbstorage.NewThreadGdbmDb()
+	err := keyStore.store.Connect(ctx, keyStoreFile)
+	if err != nil {
+		return nil, err
+	}
+	return keyStore, nil
+}
+
+func(s *SshKeyStore) AddFromFile(ctx context.Context, fp string, sessionId string) error {
+	_, err := os.Stat(fp)
+	if err != nil {
+		return fmt.Errorf("cannot open ssh server public key file: %v\n", err)
+	}
+
+	publicBytes, err := os.ReadFile(fp)
+	if err != nil {
+		return fmt.Errorf("Failed to load public key: %v", err)
+	}
+	pubKey, _, _, _, err := ssh.ParseAuthorizedKey(publicBytes)
+	if err != nil {
+		return fmt.Errorf("Failed to parse public key: %v", err)
+	}
+	k := append([]byte{0x01}, pubKey.Marshal()...)
+	s.store.SetPrefix(storage.DATATYPE_EXTEND)
+	logg.Infof("Added key", "sessionId", sessionId, "public key", string(publicBytes))
+	return s.store.Put(ctx, k, []byte(sessionId))
+}
+
+func(s *SshKeyStore) Get(ctx context.Context, pubKey ssh.PublicKey) (string, error) {
+	s.store.SetLanguage(nil)
+	s.store.SetPrefix(storage.DATATYPE_EXTEND)
+	k := append([]byte{0x01}, pubKey.Marshal()...)
+	v, err := s.store.Get(ctx, k)
+	if err != nil {
+		return "", err
+	}
+	return string(v), nil
+}
+
+func(s *SshKeyStore) Close() error {
+	return s.store.Close()
+}

internal/ssh/ssh.go

@@ -0,0 +1,287 @@
+package ssh
+
+import (
+	"context"
+	"encoding/hex"
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"net"
+	"os"
+	"sync"
+
+	"golang.org/x/crypto/ssh"
+
+	"git.defalsify.org/vise.git/engine"
+	"git.defalsify.org/vise.git/logging"
+	"git.defalsify.org/vise.git/resource"
+	"git.defalsify.org/vise.git/state"
+
+	"git.grassecon.net/urdt/ussd/internal/handlers"
+	"git.grassecon.net/urdt/ussd/internal/storage"
+	"git.grassecon.net/urdt/ussd/remote"
+)
+
+var (
+	logg = logging.NewVanilla().WithDomain("ssh")
+)
+
+type auther struct {
+	Ctx context.Context
+	keyStore *SshKeyStore
+	auth map[string]string
+}
+
+func NewAuther(ctx context.Context, keyStore *SshKeyStore) *auther {
+	return &auther{
+		Ctx: ctx,
+		keyStore: keyStore,
+		auth: make(map[string]string),
+	}
+}
+
+func(a *auther) Check(conn ssh.ConnMetadata, pubKey ssh.PublicKey) (*ssh.Permissions, error) {
+	va, err := a.keyStore.Get(a.Ctx, pubKey)
+	if err != nil {
+		return nil, err
+	}
+	ka := hex.EncodeToString(conn.SessionID())
+	a.auth[ka] = va 
+	fmt.Fprintf(os.Stderr, "connect: %s -> %s\n", ka, va)
+	return nil, nil
+}
+
+func(a *auther) FromConn(c *ssh.ServerConn) (string, error) {
+	if c == nil {
+		return "", errors.New("nil server conn")
+	}
+	if c.Conn == nil {
+		return "", errors.New("nil underlying conn")
+	}
+	return a.Get(c.Conn.SessionID())
+}
+
+
+func(a *auther) Get(k []byte) (string, error) {
+	ka := hex.EncodeToString(k)
+	v, ok := a.auth[ka]
+	if !ok {
+		return "", errors.New("not found")
+	}
+	return v, nil
+}
+
+func(s *SshRunner) serve(ctx context.Context, sessionId string, ch ssh.NewChannel, en engine.Engine) error {
+	if ch == nil {
+		return errors.New("nil channel")
+	}
+	if ch.ChannelType() != "session" {
+		ch.Reject(ssh.UnknownChannelType, "that is not the channel you are looking for")
+		return errors.New("not a session")
+	}
+	channel, requests, err := ch.Accept()
+	if err != nil {
+		panic(err)
+	}
+	defer channel.Close()
+	s.wg.Add(1)
+	go func(reqIn <-chan *ssh.Request) {
+		defer s.wg.Done()
+		for req := range reqIn {
+			req.Reply(req.Type == "shell", nil)	
+		}
+		_ = requests
+	}(requests)
+
+	cont, err := en.Exec(ctx, []byte{})
+	if err != nil {
+		return fmt.Errorf("initial engine exec err: %v", err)
+	}
+
+	var input [state.INPUT_LIMIT]byte
+	for cont {
+		c, err := en.Flush(ctx, channel)
+		if err != nil {
+			return fmt.Errorf("flush err: %v", err)
+		}
+		_, err = channel.Write([]byte{0x0a})
+		if err != nil {
+			return fmt.Errorf("newline err: %v", err)
+		}
+		c, err = channel.Read(input[:])
+		if err != nil {
+			return fmt.Errorf("read input fail: %v", err)
+		}
+		logg.TraceCtxf(ctx, "input read", "c", c, "input", input[:c-1])
+		cont, err = en.Exec(ctx, input[:c-1])
+		if err != nil {
+			return fmt.Errorf("engine exec err: %v", err)
+		}
+		logg.TraceCtxf(ctx, "exec cont", "cont", cont, "en", en)
+		_ = c
+	}
+	c, err := en.Flush(ctx, channel)
+	if err != nil {
+		return fmt.Errorf("last flush err: %v", err)
+	}
+	_ = c
+	return nil
+}
+
+type SshRunner struct {
+	Ctx context.Context
+	Cfg engine.Config
+	FlagFile string
+	DbDir string
+	ResourceDir string
+	Debug bool
+	SrvKeyFile string
+	Host string
+	Port uint
+	wg sync.WaitGroup
+	lst net.Listener
+}
+
+func(s *SshRunner) Stop() error {
+	return s.lst.Close()
+}
+
+func(s *SshRunner) GetEngine(sessionId string) (engine.Engine, func(), error) {
+	ctx := s.Ctx
+	menuStorageService := storage.NewMenuStorageService(s.DbDir, s.ResourceDir)
+
+	err := menuStorageService.EnsureDbDir()
+	if err != nil {
+		return nil, nil, err
+	}
+
+	rs, err := menuStorageService.GetResource(ctx)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	pe, err := menuStorageService.GetPersister(ctx)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	userdatastore, err := menuStorageService.GetUserdataDb(ctx)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	dbResource, ok := rs.(*resource.DbResource)
+	if !ok {
+		return nil, nil, err
+	}
+
+	lhs, err := handlers.NewLocalHandlerService(ctx, s.FlagFile, true, dbResource, s.Cfg, rs)
+	lhs.SetDataStore(&userdatastore)
+	lhs.SetPersister(pe)
+	lhs.Cfg.SessionId = sessionId
+
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// TODO: clear up why pointer here and by-value other cmds
+	accountService := &remote.AccountService{}
+	hl, err := lhs.GetHandler(accountService)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	en := lhs.GetEngine()
+	en = en.WithFirst(hl.Init)
+	if s.Debug {
+		en = en.WithDebug(nil)
+	}
+	// TODO: this is getting very hacky!
+	closer := func() {
+		err := menuStorageService.Close()
+		if err != nil {
+			logg.ErrorCtxf(ctx, "menu storage service cleanup fail", "err", err)
+		}
+	}
+	return en, closer, nil
+}
+
+// adapted example from crypto/ssh package, NewServerConn doc
+func(s *SshRunner) Run(ctx context.Context, keyStore *SshKeyStore) {
+	running := true
+
+	// TODO: waitgroup should probably not be global
+	defer s.wg.Wait()
+
+	auth := NewAuther(ctx, keyStore)
+	cfg := ssh.ServerConfig{
+		PublicKeyCallback: auth.Check,
+	}
+
+	privateBytes, err := os.ReadFile(s.SrvKeyFile)
+	if err != nil {
+		logg.ErrorCtxf(ctx, "Failed to load private key", "err", err)
+	}
+	private, err := ssh.ParsePrivateKey(privateBytes)
+	if err != nil {
+		logg.ErrorCtxf(ctx, "Failed to parse private key", "err", err)
+	}
+	srvPub := private.PublicKey()
+	srvPubStr := base64.StdEncoding.EncodeToString(srvPub.Marshal())
+	logg.InfoCtxf(ctx, "have server key", "type", srvPub.Type(), "public", srvPubStr)
+	cfg.AddHostKey(private)
+
+	s.lst, err = net.Listen("tcp", fmt.Sprintf("%s:%d", s.Host, s.Port))
+	if err != nil {
+		panic(err)
+	}
+
+	for running {
+		conn, err := s.lst.Accept()
+		if err != nil {
+			logg.ErrorCtxf(ctx, "ssh accept error", "err", err)
+			running = false
+			continue
+		}
+
+		go func(conn net.Conn) {
+			defer conn.Close()
+			for true {
+				srvConn, nC, rC, err := ssh.NewServerConn(conn, &cfg)
+				if err != nil {
+					logg.InfoCtxf(ctx, "rejected client", "err", err)
+					return
+				}
+				logg.DebugCtxf(ctx, "ssh client connected", "conn", srvConn)
+
+				s.wg.Add(1)
+				go func() {
+					ssh.DiscardRequests(rC)
+					s.wg.Done()
+				}()
+				
+				sessionId, err := auth.FromConn(srvConn)
+				if err != nil {
+					logg.ErrorCtxf(ctx, "Cannot find authentication")
+					return
+				}
+				en, closer, err := s.GetEngine(sessionId)
+				if err != nil {
+					logg.ErrorCtxf(ctx, "engine won't start", "err", err)
+					return
+				}
+				defer func() {
+					err := en.Finish()
+					if err != nil {
+						logg.ErrorCtxf(ctx, "engine won't stop", "err", err)
+					}
+					closer()
+				}()
+				for ch := range nC {
+					err = s.serve(ctx, sessionId, ch, en)
+					logg.ErrorCtxf(ctx, "ssh server finish", "err", err)
+				}
+			}
+		}(conn)
+	}
+}

internal/storage/db/gdbm/gdbm.go

@@ -6,6 +6,11 @@ import (
 	"git.defalsify.org/vise.git/db"
 	gdbmdb "git.defalsify.org/vise.git/db/gdbm"
 	"git.defalsify.org/vise.git/lang"
+	"git.defalsify.org/vise.git/logging"
+)
+
+var (
+	logg = logging.NewVanilla().WithDomain("gdbmstorage")
 )
 
 var (

internal/storage/storage.go

@@ -5,6 +5,10 @@ import (
 	"git.defalsify.org/vise.git/persist"
 )
 
+const (
+	DATATYPE_EXTEND = 128
+)
+
 type Storage struct {
 	Persister *persist.Persister
 	UserdataDb db.Db	

internal/storage/storageservice.go

@@ -13,6 +13,7 @@ import (
 	"git.defalsify.org/vise.git/persist"
 	"git.defalsify.org/vise.git/resource"
 	"git.grassecon.net/urdt/ussd/initializers"
+	gdbmstorage "git.grassecon.net/urdt/ussd/internal/storage/db/gdbm"
 )
 
 var (
@@ -75,7 +76,7 @@ func (ms *MenuStorageService) getOrCreateDb(ctx context.Context, existingDb db.D
 		connStr := buildConnStr()
 		err = newDb.Connect(ctx, connStr)
 	} else {
-		newDb = NewThreadGdbmDb()
+		newDb = gdbmstorage.NewThreadGdbmDb()
 		storeFile := path.Join(ms.dbDir, fileName)
 		err = newDb.Connect(ctx, storeFile)
 	}

internal/testutil/mocks/httpmocks/requestparsermock.go

@@ -1,12 +1,14 @@
 package httpmocks
 
+import "context"
+
 // MockRequestParser implements the handlers.RequestParser interface for testing
 type MockRequestParser struct {
 	GetSessionIdFunc func(any) (string, error)
 	GetInputFunc     func(any) ([]byte, error)
 }
 
-func (m *MockRequestParser) GetSessionId(rq any) (string, error) {
+func (m *MockRequestParser) GetSessionId(ctx context.Context, rq any) (string, error) {
 	return m.GetSessionIdFunc(rq)
 }
 

internal/utils/isocode.go

@@ -1,9 +1,9 @@
 package utils
 
 var isoCodes = map[string]bool{
-	"eng": true, // English
-	"swa": true, // Swahili
-
+	"eng":     true, // English
+	"swa":     true, // Swahili
+	"default": true, // Default language: English
 }
 
 func IsValidISO639(code string) bool {

services/registration/change_language.vis

@@ -5,6 +5,6 @@ CATCH pin_entry flag_account_authorized 0
 MOUT english 1
 MOUT kiswahili 2
 HALT
-INCMP set_default 1
+INCMP set_eng 1
 INCMP set_swa 2
 INCMP . *

services/registration/set_default.vis

@@ -0,0 +1,4 @@
+LOAD set_language 6
+RELOAD set_language
+CATCH terms flag_account_created 0
+MOVE language_changed