feat(firewall): implement firewall blocklist feature with client management and policy rules

Introduced a comprehensive firewall blocklist feature, allowing for the management of firewall clients and their associated rules. This includes endpoints for enrolling clients, listing clients and rules, and reporting apply statuses. Enhanced the API to support firewall operations, including the ability to handle block/accept policies. Updated the documentation to reflect these changes and added necessary components in the web UI for better user interaction.

Additionally, modified the agent server to support firewall failover and integrated firewall functionality into the existing architecture.

internal/httpapi/routes_firewall_test.go

@@ -0,0 +1,128 @@
+package httpapi
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"evobgp/internal/authkey"
+	"evobgp/internal/store"
+)
+
+func TestFirewallEnrollAndBlocklist(t *testing.T) {
+	srv, err := New(Options{SeedDemo: true, BundleSeedHex: testBundleSeed})
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer srv.Close()
+	tenant, _, _, _, _ := srv.Store().DemoIDs()
+	mustSetTestAPIKeys(t, srv, "opkey|"+tenant+"|operator")
+
+	ts := httptest.NewServer(srv.Handler())
+	defer ts.Close()
+	client := ts.Client()
+
+	tok := "evobgp_fw_testtoken123456789012345678901234"
+	enrollBody := `{"name":"web-01","hostname":"web-01.local","client_token":"` + tok + `","client_version":"test/1"}`
+	reqEnroll, _ := http.NewRequest(http.MethodPost, ts.URL+"/v1/firewall/enroll", strings.NewReader(enrollBody))
+	reqEnroll.Header.Set("Content-Type", "application/json")
+	reqEnroll.Header.Set("X-EvoBGP-Seed", testBundleSeed)
+	respEnroll, err := client.Do(reqEnroll)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() { _ = respEnroll.Body.Close() }()
+	if respEnroll.StatusCode != http.StatusCreated {
+		b, _ := io.ReadAll(respEnroll.Body)
+		t.Fatalf("enroll status=%d body=%s", respEnroll.StatusCode, b)
+	}
+	var enroll map[string]any
+	if err := json.NewDecoder(respEnroll.Body).Decode(&enroll); err != nil {
+		t.Fatal(err)
+	}
+	clientID, _ := enroll["client_id"].(string)
+	if clientID == "" {
+		t.Fatal("missing client_id")
+	}
+
+	reqBlock, _ := http.NewRequest(http.MethodGet, ts.URL+"/v1/firewall/blocklist", nil)
+	reqBlock.Header.Set("Authorization", "Bearer "+tok)
+	respBlock, err := client.Do(reqBlock)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() { _ = respBlock.Body.Close() }()
+	if respBlock.StatusCode != http.StatusForbidden {
+		t.Fatalf("pending blocklist want 403 got %d", respBlock.StatusCode)
+	}
+
+	reqApprove, _ := http.NewRequest(http.MethodPost, ts.URL+"/v1/firewall/clients/"+clientID+"/approve", nil)
+	reqApprove.Header.Set("Authorization", "Bearer opkey")
+	respApprove, err := client.Do(reqApprove)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() { _ = respApprove.Body.Close() }()
+	if respApprove.StatusCode != http.StatusOK {
+		b, _ := io.ReadAll(respApprove.Body)
+		t.Fatalf("approve status=%d body=%s", respApprove.StatusCode, b)
+	}
+
+	_, err = srv.Store().CreateFirewallRule(tenant, nil, &store.FirewallRuleCreate{Action: "accept", Comment: "default"})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	reqBlock2, _ := http.NewRequest(http.MethodGet, ts.URL+"/v1/firewall/blocklist", nil)
+	reqBlock2.Header.Set("Authorization", "Bearer "+tok)
+	respBlock2, err := client.Do(reqBlock2)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() { _ = respBlock2.Body.Close() }()
+	if respBlock2.StatusCode != http.StatusOK {
+		b, _ := io.ReadAll(respBlock2.Body)
+		t.Fatalf("blocklist status=%d body=%s", respBlock2.StatusCode, b)
+	}
+	var bl map[string]any
+	if err := json.NewDecoder(respBlock2.Body).Decode(&bl); err != nil {
+		t.Fatal(err)
+	}
+	if total, _ := bl["total"].(float64); total != 0 {
+		t.Fatalf("accept-only want empty blocklist, total=%v", total)
+	}
+}
+
+func TestFirewallEnrollBadSeed(t *testing.T) {
+	srv, err := New(Options{SeedDemo: true, BundleSeedHex: testBundleSeed})
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer srv.Close()
+	ts := httptest.NewServer(srv.Handler())
+	defer ts.Close()
+
+	body := `{"name":"x","client_token":"evobgp_fw_` + strings.Repeat("a", 40) + `"}`
+	req, _ := http.NewRequest(http.MethodPost, ts.URL+"/v1/firewall/enroll", strings.NewReader(body))
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("X-EvoBGP-Seed", "deadbeef")
+	resp, err := ts.Client().Do(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() { _ = resp.Body.Close() }()
+	if resp.StatusCode != http.StatusForbidden {
+		t.Fatalf("want 403 got %d", resp.StatusCode)
+	}
+}
+
+func TestFirewallTokenHashMatchesAuthkey(t *testing.T) {
+	tok := "evobgp_fw_sample"
+	h := authkey.HashToken(tok)
+	if len(h) != 32 {
+		t.Fatalf("hash len %d", len(h))
+	}
+}