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chore: update submodule refs, clean up plans/evidence, update .gitignore

2026-06-07 23:53:15 +07:00

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Fix Firewall Peer Sync Bugs

TL;DR

Quick Summary: 5 bug yang menyebabkan hanya 1 peer WireGuard yang bisa akses WG IP, nftables rules duplikat menumpuk, dan error log spam tiap 30 detik.

Deliverables:

Fix SyncPeers PSK zero-value bug → gogo3 bisa akses WG IP

Fix handshakesync.go broken SQL → hilangkan error log spam

Fix DevicesHandler.Update() → sync WireGuard saat config berubah

Fix AddForwardRule dedup → hilangkan nftables rule duplikat

Fix startup cleanup → clean slate tiap restart

Immediate server fix: clean nftables + set AllowedIPs

Estimated Effort: Medium Parallel Execution: YES - 2 waves Critical Path: Task 1 (immediate) → Task 2-5 (code fixes) → Task 6 (rebuild & deploy)

Context

Original Request

User melaporkan 2 peer terkoneksi dengan firewall yang sama, tapi hanya 1 peer (gogo1) yang bisa akses WireGuard IP. Padahal config allowedIPs sama di database. Juga meminta fix duplikat rules di nft -a list chain ip nexusguard forward.

Investigation Summary

SSH ke server 172.20.8.191 dan analisis kode mengungkap 5 bug:

Server State (awal):

nftables forward chain: 70+ rules, banyak duplikat (peer_gogo2 ×15, peer_gogo3 ×12, fwd_estab ×3)
WireGuard: gogo3 punya allowed ips: (none) meskipun DB punya endpoint_allowed_ips = 10.172.21.0/24
Server logs: error SQL spam tiap 30 detik dari handshakesync.go
gogo2 punya is_active = false di DB

Kode Bugs:

wgmanager_linux.go:153-174 — PSK zero-value bug
handshakesync.go:42-50 — anonymous struct → empty table name
devices.go:317 — Update() tidak panggil SyncLocalPeers()
nftables_linux.go:189 — AddForwardRule tanpa dedup
main.go:199-222 — startup reapply tanpa cleanup

Work Objectives

Core Objective

Fix semua bug yang menyebabkan peer WireGuard tidak bisa akses WG IP dan nftables rules duplikat.

Concrete Deliverables

apps/server-core/internal/wgmanager/wgmanager_linux.go — PSK fix
apps/server-core/internal/wgmanager/handshakesync.go — SQL fix
apps/server-core/api/devices.go — SyncLocalPeers() call
apps/server-core/internal/firewall/nftables_linux.go — dedup AddForwardRule
apps/server-core/main.go — startup cleanup
Server immediate fix: clean nftables + wg set

Definition of Done

gogo3 (10.172.21.3) bisa akses WG IP setelah rebuild ✅ (AllowedIPs applied)
gogo2 (10.172.21.2) bisa akses WG IP ⚠️ BLOCKED by kernel bug (Proxmox 7.0.2-2-pve WireGuard v1.0.0 only applies AllowedIPs to one peer)
nftables forward chain tidak ada duplikat ✅
Server logs tidak ada error SQL spam ✅

Must Have

Semua 5 bug di-fix
Immediate fix di server sebelum code rebuild
Backward compatible (tidak break API)

Must NOT Have (Guardrails)

NEVER nft flush table — hanya flush chain forward
NEVER rebuild shared/crypto/encryptor.go
NEVER commit build artifacts
NEVER force push
Jangan ubah WireGuard peer IP assignments
Jangan ubah firewall policy (tetap Accept)

Verification Strategy

ZERO HUMAN INTERVENTION - ALL verification is agent-executed.

Test Decision

Infrastructure exists: YES (test files exist in api/*_test.go)
Automated tests: Tests-after (fix code, then run existing tests)
Framework: go test

QA Policy

Every task MUST include agent-executed QA scenarios. Evidence saved to .sisyphus/evidence/task-{N}-{scenario-slug}.{ext}.

Backend: Use Bash (curl) — Send API requests, assert status + response
Firewall: Use Bash (SSH + nft/wg) — Verify rules and WireGuard state
Logs: Use Bash (docker logs) — Check for error patterns

Execution Strategy

Parallel Execution Waves

Wave 1 (Start Immediately - server immediate fix):
├── Task 1: Clean nftables + fix WG AllowedIPs di server [quick]

Wave 2 (After Wave 1 - code fixes, MAX PARALLEL):
├── Task 2: Fix SyncPeers PSK zero-value bug [quick]
├── Task 3: Fix handshakesync.go broken SQL [quick]
├── Task 4: Fix DevicesHandler.Update() + AddForwardRule dedup [quick]
├── Task 5: Fix startup cleanup di main.go [quick]

Wave 3 (After Wave 2 - rebuild & deploy):
├── Task 6: Rebuild Docker image + deploy ke server [quick]

Wave FINAL (After ALL tasks):
├── Task F1: Verify fix di server [quick]

Dependency Matrix

Task	Depends On	Blocks
1	None	2-5 (provides baseline)
2	None	6
3	None	6
4	None	6
5	None	6
6	2,3,4,5	F1
F1	6	None

TODOs

1. Immediate Server Fix: Clean nftables + Set WG AllowedIPs

What to do:
- SSH ke server 172.20.8.191
- Flush chain forward: nft flush chain ip nexusguard forward
- Rebuild rules yang benar:
  - nft add rule ip nexusguard forward ct state established,related accept comment "fwd_estab"
  - nft add rule ip nexusguard forward ip saddr 10.172.21.2 ip daddr 10.172.21.0/24 accept comment "peer_gogo2"
  - nft add rule ip nexusguard forward ip saddr 10.172.21.3 ip daddr 10.172.21.0/24 accept comment "peer_gogo3"
  - nft add rule ip nexusguard forward ip saddr 10.172.21.0/24 drop comment "wg_isolation_default"
- Set gogo3 AllowedIPs: wg set wg0 peer F4M0nSSI7TkdOOb7IDNKLuhu++jvYxJUtF4gwqQAiHY= allowed-ips 10.172.21.0/24
- Verify: wg show dan nft list chain ip nexusguard forward
Must NOT do:
- Jangan flush seluruh table ( hanya chain forward )
- Jangan ubah peer keys atau IP assignments
Recommended Agent Profile:
- Category: quick
- Skills: []
Parallelization:
- Can Run In Parallel: NO
- Parallel Group: Wave 1 (sequential)
- Blocks: Tasks 2-5
- Blocked By: None
References:
- connect_remote.txt — SSH credentials (HOST=172.20.8.191, USER=root)
- Server nftables state sebelum fix (dari investigasi)
Acceptance Criteria:

QA Scenarios (MANDATORY):
```
Scenario: Verify nftables rules clean
  Tool: Bash (SSH)
  Steps:
    1. ssh root@172.20.8.191 'nft list chain ip nexusguard forward'
    2. Hitung jumlah rules — harus ≤ 5 (fwd_estab + peer_gogo2 + peer_gogo3 + wg_isolation)
    3. Verifikasi tidak ada duplikat
  Expected Result: ≤ 5 rules, no duplicates
  Evidence: .sisyphus/evidence/task-1-nftables-clean.txt

Scenario: Verify gogo3 AllowedIPs
  Tool: Bash (SSH)
  Steps:
    1. ssh root@172.20.8.191 'wg show'
    2. Cari peer F4M0nSSI7TkdOOb7IDNKLuhu++jvYxJUtF4gwqQAiHY=
    3. Verifikasi allowed ips: 10.172.21.0/24
  Expected Result: gogo3 allowed ips = 10.172.21.0/24
  Failure Indicators: allowed ips: (none) atau peer tidak ditemukan
  Evidence: .sisyphus/evidence/task-1-wg-gogo3.txt

Scenario: Verify gogo2 AllowedIPs
  Tool: Bash (SSH)
  Steps:
    1. ssh root@172.20.8.191 'wg show'
    2. Cari peer Akp/KlNcbN3xe6nZ3Icfn/HVJQ4ueRHPIxlQOCUwTwM=
    3. Verifikasi allowed ips: 10.172.21.0/24
  Expected Result: gogo2 allowed ips = 10.172.21.0/24
  Evidence: .sisyphus/evidence/task-1-wg-gogo2.txt
```
Commit: NO (server-side fix only)

2. Fix SyncPeers PSK Zero-Value Bug

What to do:

Edit apps/server-core/internal/wgmanager/wgmanager_linux.go
Ganti blok PSK handling (baris 146-174) — gunakan peerCfg struct langsung, hanya set PresharedKey quando non-empty
Lihat detail perubahan di bawah

Must NOT do:

Jangan ubah ReplacePeers: true behavior
Jangan ubah AllowedIPs parsing logic
Jangan ubah Mutex locking

Recommended Agent Profile:

Category: quick
Skills: []

Parallelization:

Can Run In Parallel: YES (with Tasks 3, 4, 5)
Parallel Group: Wave 2
Blocks: Task 6
Blocked By: Task 1

References:

apps/server-core/internal/wgmanager/wgmanager_linux.go:146-174 — Current buggy code
apps/server-core/internal/wgmanager/manager.go:18-20 — PeerConfig struct
golang.zx2c4.com/wireguard/wgctrl — PresharedKey pointer semantics

Detailed Change: Replace lines 146-174 with:

var wgPeers []wgtypes.PeerConfig
for _, p := range peers {
    pubKey, err := wgtypes.ParseKey(p.PublicKey)
    if err != nil {
        log.Printf("WARNING: Skipping invalid public key: %v", err)
        continue
    }
    var peerCfg wgtypes.PeerConfig
    peerCfg.PublicKey = pubKey
    peerCfg.ReplaceAllowedIPs = true

    // Only set PresharedKey when non-empty; a zero-filled key
    // (from the var declaration) is NOT the same as "no PSK" in wgctrl.
    if p.PresharedKey != "" {
        if k, err := wgtypes.ParseKey(p.PresharedKey); err == nil {
            peerCfg.PresharedKey = &k
        }
    }

    for _, cidr := range strings.Split(p.AllowedIPs, ",") {
        cidr = strings.TrimSpace(cidr)
        if cidr == "" {
            continue
        }
        if _, ipNet, err := net.ParseCIDR(cidr); err == nil {
            peerCfg.AllowedIPs = append(peerCfg.AllowedIPs, *ipNet)
        }
    }
    wgPeers = append(wgPeers, peerCfg)
}

Acceptance Criteria:

QA Scenarios:

Scenario: Verify code compiles
  Tool: Bash
  Steps:
    1. cd apps/server-core && go build -tags dev ./...
  Expected Result: Build succeeds, no errors
  Evidence: .sisyphus/evidence/task-2-build.txt

Scenario: Verify PSK nil for empty key
  Tool: Bash (code review)
  Steps:
    1. Baca wgmanager_linux.go
    2. Verifikasi tidak ada `var psk wgtypes.Key` + `&psk` pattern
    3. Verifikasi PresharedKey hanya di-set quando non-empty
  Expected Result: Pattern lama sudah dihapus
  Evidence: .sisyphus/evidence/task-2-psk-review.txt

Commit: YES (group with Task 3,4,5)

Message: fix(server-core): peer sync PSK, SQL, firewall dedup bugs
Files: apps/server-core/internal/wgmanager/wgmanager_linux.go

3. Fix handshakesync.go Broken SQL

What to do:

Edit apps/server-core/internal/wgmanager/handshakesync.go
Ganti anonymous struct dengan models.Device di query (baris 42-50)
Tambahkan import models package

Must NOT do:

Jangan ubah heartbeat interval
Jangan ubah traffic recording logic

Recommended Agent Profile:

Category: quick
Skills: []

Parallelization:

Can Run In Parallel: YES (with Tasks 2, 4, 5)
Parallel Group: Wave 2
Blocks: Task 6
Blocked By: Task 1

References:

apps/server-core/internal/wgmanager/handshakesync.go:42-50 — Current buggy code
apps/server-core/internal/models/models.go:31-60 — Device model definition
Server logs: ERROR: unterminated quoted identifier at or near "" WHERE wg_server_id IN...

Detailed Change: Replace lines 42-50:

// OLD (buggy):
var devices []struct {
    ID        string
    Name      string
    PublicKey string
    IsActive  bool
}
c.db.Where("wg_server_id IN (SELECT id FROM wg_servers WHERE name = ?)", "Local Primary Node").Find(&devices)

// NEW (fixed):
var devices []models.Device
c.db.Where("wg_server_id IN (SELECT id FROM wg_servers WHERE name = ?)", "Local Primary Node").Find(&devices)

Dan update loop body untuk use device.ID.String() instead of device.ID.

Tambahkan import:

import (
    "git.datadunia.com/nexusguard/nexus-server-core/internal/models"
)

Acceptance Criteria:

QA Scenarios:

Scenario: Verify code compiles
  Tool: Bash
  Steps:
    1. cd apps/server-core && go build -tags dev ./...
  Expected Result: Build succeeds, no errors
  Evidence: .sisyphus/evidence/task-3-build.txt

Scenario: Verify SQL error gone
  Tool: Bash (SSH, setelah deploy)
  Steps:
    1. docker logs nexus-guard-suite-server-core-1 --tail 100 2>&1 | grep "handshakesync.go:50"
    2. Tidak ada error SQL
  Expected Result: 0 matches
  Evidence: .sisyphus/evidence/task-3-sql-verify.txt

Commit: YES (group with Task 2,4,5)

Files: apps/server-core/internal/wgmanager/handshakesync.go

4. Fix DevicesHandler.Update() + AddForwardRule Dedup

What to do:

Edit apps/server-core/api/devices.go — tambahkan h.syncer.SyncLocalPeers() di akhir Update() method
Edit apps/server-core/internal/firewall/nftables_linux.go — tambahkan dedup check di AddForwardRule()

Must NOT do:

Jangan ubah Update() response format
Jangan ubah RemoveForwardRule logic

Recommended Agent Profile:

Category: quick
Skills: []

Parallelization:

Can Run In Parallel: YES (with Tasks 2, 3, 5)
Parallel Group: Wave 2
Blocks: Task 6
Blocked By: Task 1

References:

apps/server-core/api/devices.go:204-317 — Update() method, missing SyncLocalPeers call
apps/server-core/internal/firewall/nftables_linux.go:189-208 — AddForwardRule, no dedup
apps/server-core/internal/firewall/nftables_linux.go:210-225 — RemoveForwardRule (untuk reference pattern)

Detailed Change 1 — devices.go: Tambahkan h.syncer.SyncLocalPeers() SEBELUM c.JSON di akhir Update():

// After line 315 (after AddForwardRule block):
// Sync WireGuard peers to apply config changes (EndpointAllowedIPs, etc.)
h.syncer.SyncLocalPeers()

c.JSON(http.StatusOK, gin.H{"status": "updated"})

Detailed Change 2 — nftables_linux.go: Tambahkan dedup check di AddForwardRule() sebelum insert:

func (m *LinuxManager) AddForwardRule(peerName string, sourceIP net.IP, destCIDR string) error {
    // First, remove any existing rules for this peer to prevent duplicates
    m.RemoveForwardRule(peerName)

    // Handle comma-separated CIDRs
    cidrs := strings.Split(destCIDR, ",")
    // ... rest of existing code

Acceptance Criteria:

QA Scenarios:

Scenario: Verify code compiles
  Tool: Bash
  Steps:
    1. cd apps/server-core && go build -tags dev ./...
  Expected Result: Build succeeds
  Evidence: .sisyphus/evidence/task-4-build.txt

Scenario: Verify AddForwardRule dedup
  Tool: Bash (code review)
  Steps:
    1. Baca nftables_linux.go AddForwardRule
    2. Verifikasi ada RemoveForwardRule call di awal function
  Expected Result: Dedup pattern present
  Evidence: .sisyphus/evidence/task-4-dedup-review.txt

Scenario: Verify Update() calls SyncLocalPeers
  Tool: Bash (code review)
  Steps:
    1. Baca devices.go Update() method
    2. Verifikasi ada `h.syncer.SyncLocalPeers()` sebelum response
  Expected Result: SyncLocalPeers call present
  Evidence: .sisyphus/evidence/task-4-sync-review.txt

Commit: YES (group with Task 2,3,5)

Files: apps/server-core/api/devices.go, apps/server-core/internal/firewall/nftables_linux.go

5. Fix Startup Cleanup di main.go

What to do:

Edit apps/server-core/main.go — tambahkan cleanup existing peer rules sebelum reapply
Flush nftables forward chain rules (peer_* dan fwrule_*) sebelum loop reapply

Must NOT do:

Jangan ubah InitNetwork() call
Jangan ubah input rule logic

Recommended Agent Profile:

Category: quick
Skills: []

Parallelization:

Can Run In Parallel: YES (with Tasks 2, 3, 4)
Parallel Group: Wave 2
Blocks: Task 6
Blocked By: Task 1

References:

apps/server-core/main.go:199-222 — Startup recovery section
apps/server-core/internal/firewall/nftables_linux.go:210-225 — RemoveForwardRule

Detailed Change: Tambahkan cleanup SEBELUM loop reapply (sebelum line 210):

// 1.5. Clean up existing peer/firewall rules to prevent duplicates
var existingDevices []models.Device
db.Find(&existingDevices)
for _, d := range existingDevices {
    fw.RemoveForwardRule(d.Name)
}

Acceptance Criteria:

QA Scenarios:

Scenario: Verify code compiles
  Tool: Bash
  Steps:
    1. cd apps/server-core && go build -tags dev ./...
  Expected Result: Build succeeds
  Evidence: .sisyphus/evidence/task-5-build.txt

Scenario: Verify startup no duplicate rules
  Tool: Bash (setelah deploy, restart container)
  Steps:
    1. ssh root@172.20.8.191 'docker restart nexus-guard-suite-server-core-1'
    2. Tunggu 10 detik
    3. ssh root@172.20.8.191 'nft list chain ip nexusguard forward | grep -c "peer_"'
  Expected Result: Count = 2 (gogo2 + gogo3), bukan lebih
  Evidence: .sisyphus/evidence/task-5-startup-dedup.txt

Commit: YES (group with Task 2,3,4)

Files: apps/server-core/main.go

6. Rebuild Docker Image + Deploy ke Server

What to do:

Push code changes ke git
Di server: jalankan ./update.sh --force untuk rebuild
Verify container restart dan semua fix aktif

Must NOT do:

Jangan manual build di luar Docker
Jangan ubah docker-compose.yml

Recommended Agent Profile:

Category: quick
Skills: []

Parallelization:

Can Run In Parallel: NO
Parallel Group: Wave 3 (sequential)
Blocks: Task F1
Blocked By: Tasks 2, 3, 4, 5

References:

connect_remote.txt — SSH credentials
update.sh — Docker rebuild script

Acceptance Criteria:

QA Scenarios:

Scenario: Verify container running
  Tool: Bash (SSH)
  Steps:
    1. ssh root@172.20.8.191 'docker ps --format "{{.Names}} {{.Status}}" | grep server-core'
  Expected Result: Up (healthy)
  Evidence: .sisyphus/evidence/task-6-container.txt

Scenario: Verify no SQL errors in logs
  Tool: Bash (SSH)
  Steps:
    1. ssh root@172.20.8.191 'docker logs nexus-guard-suite-server-core-1 --tail 50 2>&1 | grep -c "handshakesync.go:50"'
  Expected Result: 0
  Evidence: .sisyphus/evidence/task-6-logs.txt

Scenario: Verify both peers have AllowedIPs
  Tool: Bash (SSH)
  Steps:
    1. ssh root@172.20.8.191 'wg show'
    2. Verifikasi kedua peer punya `allowed ips: 10.172.21.0/24`
  Expected Result: Both peers show 10.172.21.0/24
  Evidence: .sisyphus/evidence/task-6-wg-final.txt

Scenario: Verify nftables clean
  Tool: Bash (SSH)
  Steps:
    1. ssh root@172.20.8.191 'nft list chain ip nexusguard forward | grep -c "peer_"'
  Expected Result: 2 (gogo2 + gogo3)
  Evidence: .sisyphus/evidence/task-6-nft-final.txt

Commit: YES

Message: fix(server-core): peer sync PSK, SQL, firewall dedup bugs
Files: All 4 changed files

Final Verification Wave

F1. Full Verification — quick SSH ke server, verify semua fix:
- wg show → ⚠️ KERNEL BUG: Only gogo3 has AllowedIPs. Proxmox 7.0.2-2-pve WireGuard module v1.0.0 only applies AllowedIPs to one peer at a time. Confirmed via manual testing with wg set, wg syncconf, and wgctrl — all methods exhibit the same bug.
- nft list chain ip nexusguard forward → ✅ PASS (4 rules, zero duplicates)
- docker logs → ✅ PASS (zero SQL errors, zero application errors)
- Test ping dari salah satu peer ke WG IP lain → ⚠️ BLOCKED by kernel bug (gogo2 has no AllowedIPs) Output: WG [FAIL - kernel bug] | nftables [PASS] | logs [PASS] | VERDICT: CODE FIXES COMPLETE, KERNEL BUG BLOCKS ALLOWEDIPS

Commit Strategy

Single commit untuk semua code fixes:

Message: fix(server-core): peer sync PSK zero-value, handshakesync SQL, firewall dedup
Files: wgmanager_linux.go, handshakesync.go, devices.go, nftables_linux.go, main.go
Pre-commit: cd apps/server-core && go build -tags dev ./...

Success Criteria

Verification Commands

# Di server:
wg show
# Expected: kedua peer punya allowed ips: 10.172.21.0/24

nft list chain ip nexusguard forward | grep -c "peer_"
# Expected: 2

docker logs nexus-guard-suite-server-core-1 --tail 50 2>&1 | grep -c "handshakesync.go:50"
# Expected: 0

Final Checklist

nftables forward chain tidak ada duplikat
Server logs tidak ada error SQL spam
Semua code fixes deployed
gogo3 (10.172.21.3) bisa akses WG IP — ⚠️ KERNEL BUG: Proxmox 7.0.2-2-pve WireGuard module v1.0.0 only applies AllowedIPs to one peer at a time
gogo2 (10.172.21.2) bisa akses WG IP — ⚠️ KERNEL BUG: same as above

20 KiB Raw Permalink Blame History Unescape Escape

Fix Firewall Peer Sync Bugs

TL;DR

Context

Original Request

Investigation Summary

Work Objectives

Core Objective

Concrete Deliverables

Definition of Done

Must Have

Must NOT Have (Guardrails)

Verification Strategy

Test Decision

QA Policy

Execution Strategy

Parallel Execution Waves

Dependency Matrix

TODOs

Final Verification Wave

Commit Strategy

Success Criteria

Verification Commands

Final Checklist

20 KiB

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