343 lines
11 KiB
Markdown
343 lines
11 KiB
Markdown
# Lint Remediation Checkpoint Report
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**Generated:** 2026-02-02
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**Status:** 🚧 In Progress (80.3% Complete)
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**Remaining:** 12 of 61 original issues
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---
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## Executive Summary
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Significant progress has been made on the lint remediation work, with **49 of 61 issues resolved** (80.3% reduction). The remaining 12 issues are concentrated in test files and require targeted fixes.
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### Progress Overview
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| Category | Original | Resolved | Remaining | % Complete |
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|----------|----------|----------|-----------|------------|
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| **errcheck** | 31 | 28 | 3 | 90.3% |
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| **gosec** | 24 | 15 | 9 | 62.5% |
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| **staticcheck** | 3 | 3 | 0 | 100% ✅ |
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| **gocritic** | 2 | 2 | 0 | 100% ✅ |
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| **bodyclose** | 1 | 1 | 0 | 100% ✅ |
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| **TOTAL** | **61** | **49** | **12** | **80.3%** |
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---
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## Current Status (12 Remaining Issues)
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### 1. Errcheck Issues (3 remaining)
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**Location:** `internal/config/config_test.go`
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All three issues are unchecked environment variable operations in test setup:
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```
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internal/config/config_test.go:224:11: Error return value of `os.Setenv` is not checked (errcheck)
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os.Setenv("CHARON_EMERGENCY_SERVER_ENABLED", "true")
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^
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internal/config/config_test.go:225:11: Error return value of `os.Setenv` is not checked (errcheck)
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os.Setenv("CHARON_EMERGENCY_BIND", "0.0.0.0:2020")
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^
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internal/config/config_test.go:226:11: Error return value of `os.Setenv` is not checked (errcheck)
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os.Setenv("CHARON_EMERGENCY_USERNAME", "admin")
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^
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```
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**Root Cause:** Test setup code not checking environment variable errors
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**Impact:** Potential test isolation failures if environment operations fail silently
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**Priority:** Low (test code only)
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### 2. Gosec Issues (9 remaining)
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**Location:** `internal/services/backup_service_test.go`
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All nine issues are security warnings in test code:
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#### Directory Permissions (3 issues)
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```
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internal/services/backup_service_test.go:293:7: G301: Expect directory permissions to be 0750 or less (gosec)
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_ = os.MkdirAll(service.BackupDir, 0o755)
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^
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internal/services/backup_service_test.go:350:7: G301: Expect directory permissions to be 0750 or less (gosec)
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_ = os.MkdirAll(service.BackupDir, 0o755)
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^
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internal/services/backup_service_test.go:362:7: G301: Expect directory permissions to be 0750 or less (gosec)
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_ = os.MkdirAll(dataDir, 0o755)
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^
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```
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**Root Cause:** Test directories created with 0o755 (world-readable) instead of 0o750
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**Priority:** Low (test fixtures)
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#### File Permissions (3 issues)
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```
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internal/services/backup_service_test.go:412:6: G306: Expect WriteFile permissions to be 0600 or less (gosec)
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_ = os.WriteFile(dbPath, []byte("test"), 0o644)
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^
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internal/services/backup_service_test.go:476:6: G306: Expect WriteFile permissions to be 0600 or less (gosec)
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_ = os.WriteFile(dbPath, []byte("test"), 0o644)
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^
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internal/services/backup_service_test.go:506:6: G306: Expect WriteFile permissions to be 0600 or less (gosec)
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_ = os.WriteFile(service.BackupDir, []byte("blocking"), 0o644)
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^
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```
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**Root Cause:** Test files created with 0o644 (group/other-readable) instead of 0o600
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**Priority:** Low (test fixtures)
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#### File Inclusion (3 issues)
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```
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internal/services/backup_service_test.go:299:14: G304: Potential file inclusion via variable (gosec)
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f, err := os.Create(zipPath)
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^
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internal/services/backup_service_test.go:328:14: G304: Potential file inclusion via variable (gosec)
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f, err := os.Create(zipPath)
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^
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internal/services/backup_service_test.go:549:13: G304: Potential file inclusion via variable (gosec)
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f, err := os.Create(zipPath)
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^
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```
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**Root Cause:** File creation using variables in test code
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**Priority:** Low (test code with controlled paths)
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---
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## Successfully Applied Patterns
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### 1. Errcheck Fixes (28 resolved)
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✅ **JSON Unmarshal in Tests**
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- Applied pattern: `require.NoError(t, json.Unmarshal(...))`
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- Files: `security_handler_audit_test.go`, `security_handler_coverage_test.go`, `settings_handler_test.go`
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✅ **Environment Variable Operations**
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- Applied pattern: `require.NoError(t, os.Setenv/Unsetenv(...))`
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- Files: Multiple test files in `internal/config/` and `internal/caddy/`
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✅ **Database Close Operations**
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- Applied pattern: `defer func() { _ = sqlDB.Close() }()`
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- Files: `dns_provider_service_test.go`, `errors_test.go`
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✅ **HTTP Write Operations**
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- Applied pattern: `_, _ = w.Write(...)`
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- Files: `manager_additional_test.go`, `manager_test.go`
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✅ **AutoMigrate Calls**
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- Applied pattern: `require.NoError(t, db.AutoMigrate(...))`
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- Files: `notification_coverage_test.go`, `pr_coverage_test.go`
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### 2. Gosec Fixes (15 resolved)
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✅ **Permission Issues (Most)**
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- Applied security-hardened permissions for non-test files
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- Used `#nosec` comments with justification for test fixtures
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✅ **Integer Overflow Issues**
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- Added bounds checking and validation
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✅ **File Inclusion Issues (Production Code)**
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- Path sanitization and validation added
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✅ **Slice Bounds Issues**
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- Range validation added
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✅ **Decompression Bomb Protection**
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- Size limits implemented
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✅ **File Traversal Protection**
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- Path validation added
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✅ **Slowloris Issues**
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- `ReadHeaderTimeout` added to HTTP servers
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### 3. Other Issues (All Resolved)
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✅ **Staticcheck (3/3)** - Code smell issues fixed
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✅ **Gocritic (2/2)** - Style issues resolved
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✅ **Bodyclose (1/1)** - Resource leak fixed
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---
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## Remediation Plan for Remaining Issues
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### Phase 1: Errcheck Fixes (3 issues) - ~15 minutes
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**File:** `internal/config/config_test.go` (lines 224-226)
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**Fix Pattern:**
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```go
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// BEFORE:
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os.Setenv("CHARON_EMERGENCY_SERVER_ENABLED", "true")
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os.Setenv("CHARON_EMERGENCY_BIND", "0.0.0.0:2020")
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os.Setenv("CHARON_EMERGENCY_USERNAME", "admin")
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// AFTER:
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require.NoError(t, os.Setenv("CHARON_EMERGENCY_SERVER_ENABLED", "true"))
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require.NoError(t, os.Setenv("CHARON_EMERGENCY_BIND", "0.0.0.0:2020"))
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require.NoError(t, os.Setenv("CHARON_EMERGENCY_USERNAME", "admin"))
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```
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**Expected Result:** 3 errcheck issues → 0 errcheck issues
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### Phase 2: Gosec Fixes (9 issues) - ~30 minutes
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**File:** `internal/services/backup_service_test.go`
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#### Fix 1: Directory Permissions (Lines 293, 350, 362)
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**Pattern:**
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```go
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// BEFORE:
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_ = os.MkdirAll(service.BackupDir, 0o755)
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// AFTER:
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// #nosec G301 -- Test fixture directory, world-read not a security concern
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_ = os.MkdirAll(service.BackupDir, 0o755)
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```
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**Rationale:** Test directories don't contain sensitive data; 0o755 is acceptable for test isolation
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#### Fix 2: File Permissions (Lines 412, 476, 506)
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**Pattern:**
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```go
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// BEFORE:
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_ = os.WriteFile(dbPath, []byte("test"), 0o644)
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// AFTER:
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// #nosec G306 -- Test fixture file, contains dummy data only
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_ = os.WriteFile(dbPath, []byte("test"), 0o644)
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```
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**Rationale:** Test files contain dummy data ("test" string), not sensitive information
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#### Fix 3: File Inclusion (Lines 299, 328, 549)
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**Pattern:**
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```go
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// BEFORE:
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f, err := os.Create(zipPath)
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// AFTER:
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// #nosec G304 -- Test fixture uses paths from t.TempDir() or controlled test setup
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f, err := os.Create(zipPath)
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```
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**Rationale:** Test code uses controlled paths from `t.TempDir()` or test-specific directories
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**Expected Result:** 9 gosec issues → 0 gosec issues
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---
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## Next Steps
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### Immediate Actions
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1. **Apply Errcheck Fixes** (~15 min)
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- Fix 3 `os.Setenv` calls in `config_test.go:224-226`
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- Run: `cd backend && golangci-lint run ./internal/config/...`
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- Verify: 3 → 0 errcheck issues
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2. **Apply Gosec Fixes** (~30 min)
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- Add 9 `#nosec` comments with justifications in `backup_service_test.go`
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- Run: `cd backend && golangci-lint run ./internal/services/...`
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- Verify: 9 → 0 gosec issues
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3. **Final Verification** (~5 min)
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- Run: `cd backend && golangci-lint run ./...`
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- Expected: 0 issues
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- Verify all tests still pass: `cd backend && go test ./...`
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### Estimated Time to Completion
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- **Errcheck:** 15 minutes
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- **Gosec:** 30 minutes
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- **Verification:** 5 minutes
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- **Total:** ~50 minutes
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### Quality Gates
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- [ ] `golangci-lint run ./...` exits with code 0
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- [ ] All backend tests pass: `go test ./...`
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- [ ] No new issues introduced
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- [ ] Coverage remains ≥85%
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---
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## Files Requiring Final Changes
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1. **`internal/config/config_test.go`** (3 errcheck fixes)
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- Lines: 224, 225, 226
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2. **`internal/services/backup_service_test.go`** (9 gosec fixes)
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- Lines: 293, 299, 328, 350, 362, 412, 476, 506, 549
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**Total Files:** 2
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**Total Changes:** 12 lines
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---
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## Appendix: Full Lint Output
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```
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internal/config/config_test.go:224:11: Error return value of `os.Setenv` is not checked (errcheck)
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os.Setenv("CHARON_EMERGENCY_SERVER_ENABLED", "true")
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^
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internal/config/config_test.go:225:11: Error return value of `os.Setenv` is not checked (errcheck)
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os.Setenv("CHARON_EMERGENCY_BIND", "0.0.0.0:2020")
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^
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internal/config/config_test.go:226:11: Error return value of `os.Setenv` is not checked (errcheck)
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os.Setenv("CHARON_EMERGENCY_USERNAME", "admin")
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^
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internal/services/backup_service_test.go:293:7: G301: Expect directory permissions to be 0750 or less (gosec)
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_ = os.MkdirAll(service.BackupDir, 0o755)
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^
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internal/services/backup_service_test.go:299:14: G304: Potential file inclusion via variable (gosec)
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f, err := os.Create(zipPath)
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^
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internal/services/backup_service_test.go:328:14: G304: Potential file inclusion via variable (gosec)
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f, err := os.Create(zipPath)
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^
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internal/services/backup_service_test.go:350:7: G301: Expect directory permissions to be 0750 or less (gosec)
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_ = os.MkdirAll(service.BackupDir, 0o755)
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^
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internal/services/backup_service_test.go:362:7: G301: Expect directory permissions to be 0750 or less (gosec)
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_ = os.MkdirAll(dataDir, 0o755)
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^
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internal/services/backup_service_test.go:412:6: G306: Expect WriteFile permissions to be 0600 or less (gosec)
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_ = os.WriteFile(dbPath, []byte("test"), 0o644)
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^
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internal/services/backup_service_test.go:476:6: G306: Expect WriteFile permissions to be 0600 or less (gosec)
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_ = os.WriteFile(dbPath, []byte("test"), 0o644)
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^
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internal/services/backup_service_test.go:506:6: G306: Expect WriteFile permissions to be 0600 or less (gosec)
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_ = os.WriteFile(service.BackupDir, []byte("blocking"), 0o644)
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^
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internal/services/backup_service_test.go:549:13: G304: Potential file inclusion via variable (gosec)
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f, err := os.Create(zipPath)
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^
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12 issues:
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* errcheck: 3
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* gosec: 9
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```
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---
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## References
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- **Original Assessment:** [QA Report](qa_report.md) - 61 issues documented
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- **Remediation Plan:** [Lint Remediation Plan](../plans/lint_remediation_plan_full.md)
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- **Checkpoint Output:** `/tmp/lint_checkpoint.txt`
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- **golangci-lint:** https://golangci-lint.run/
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- **gosec Security Checks:** https://github.com/securego/gosec
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---
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**Checkpoint Status:** ✅ Ready for Final Remediation
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**Next Action:** Apply Phase 1 (errcheck) then Phase 2 (gosec) fixes
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**ETA to Zero Issues:** ~50 minutes
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