stage310/app.py at main · mokkunsuzuki-code/stage310 · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
from flask import Flask, render_template_string, request, jsonify
from datetime import datetime
import hashlib
import json

app = Flask(__name__)

HISTORY = []

HTML = """
<!doctype html>
<html lang="ja">
<head>
  <meta charset="utf-8">
  <title>Stage310 REMEDA Trust Score Visualization</title>
  <style>
    body { font-family: system-ui, sans-serif; background:#0f172a; color:#e5e7eb; margin:0; }
    header { padding:32px; background:#111827; border-bottom:1px solid #334155; }
    main { padding:32px; max-width:1100px; margin:auto; }
    .card { background:#111827; border:1px solid #334155; border-radius:16px; padding:24px; margin-bottom:24px; }
    input, textarea { width:100%; padding:12px; border-radius:10px; border:1px solid #475569; background:#020617; color:#e5e7eb; }
    button { padding:12px 20px; border:0; border-radius:10px; background:#38bdf8; color:#020617; font-weight:700; cursor:pointer; }
    .score { font-size:56px; font-weight:800; }
    .accept { color:#22c55e; }
    .pending { color:#facc15; }
    .reject { color:#ef4444; }
    .bar { background:#334155; border-radius:999px; height:18px; overflow:hidden; }
    .fill { height:100%; background:#38bdf8; }
    .grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
    .mini { background:#020617; padding:16px; border-radius:14px; border:1px solid #334155; }
    pre { background:#020617; padding:16px; border-radius:12px; overflow:auto; }
    table { width:100%; border-collapse:collapse; }
    th, td { border-bottom:1px solid #334155; padding:10px; text-align:left; }
  </style>
</head>
<body>
<header>
  <h1>Stage310 REMEDA Trust Score Visualization</h1>
  <p>Verification result を Trust Score として可視化し、人間が理解できる判断画面にします。</p>
</header>

<main>
  <div class="card">
    <h2>検証入力</h2>
    <form method="post" action="/verify">
      <p>URL</p>
      <input name="url" value="https://example.com">

      <p>Manifest JSON</p>
      <textarea name="manifest" rows="10">{
  "claims": {
    "execution": true,
    "identity": true,
    "integrity": true,
    "timestamp": true,
    "workflow": "github-actions",
    "sigstore": true,
    "policy_version": "v1"
  }
}</textarea>
      <br><br>
      <button type="submit">Trust Score を可視化する</button>
    </form>
  </div>

  {% if result %}
  <div class="card">
    <h2>Decision</h2>
    <div class="score {{ result.decision }}">{{ result.decision.upper() }}</div>
    <p>Trust Score: {{ result.trust_score }}</p>
    <div class="bar"><div class="fill" style="width: {{ result.trust_score * 100 }}%"></div></div>
    <p>{{ result.reason }}</p>
  </div>

  <div class="card">
    <h2>Trust Breakdown</h2>
    <div class="grid">
      {% for key, value in result.breakdown.items() %}
      <div class="mini">
        <h3>{{ key }}</h3>
        <div class="score">{{ value }}</div>
        <div class="bar"><div class="fill" style="width: {{ value * 100 }}%"></div></div>
      </div>
      {% endfor %}
    </div>
  </div>

  <div class="card">
    <h2>Evidence JSON</h2>
    <pre>{{ result | tojson(indent=2) }}</pre>
  </div>
  {% endif %}

  <div class="card">
    <h2>Verification History</h2>
    <table>
      <tr>
        <th>Time</th>
        <th>Decision</th>
        <th>Score</th>
        <th>URL</th>
      </tr>
      {% for item in history %}
      <tr>
        <td>{{ item.created_at }}</td>
        <td class="{{ item.decision }}">{{ item.decision }}</td>
        <td>{{ item.trust_score }}</td>
        <td>{{ item.url }}</td>
      </tr>
      {% endfor %}
    </table>
  </div>
</main>
</body>
</html>
"""

def calculate_trust(url, manifest):
    claims = manifest.get("claims", {})

    integrity = 1.0 if claims.get("integrity") else 0.0
    execution = 1.0 if claims.get("execution") and claims.get("workflow") == "github-actions" else 0.0
    identity = 1.0 if claims.get("identity") else 0.0
    time = 1.0 if claims.get("timestamp") else 0.0
    sigstore = 1.0 if claims.get("sigstore") else 0.0

    breakdown = {
        "integrity": integrity,
        "execution": execution,
        "identity": identity,
        "time": time,
        "sigstore": sigstore
    }

    trust_score = round(sum(breakdown.values()) / len(breakdown), 2)

    if trust_score >= 0.85:
        decision = "accept"
        reason = "All major trust conditions are satisfied."
    elif trust_score >= 0.45:
        decision = "pending"
        reason = "Some trust conditions are missing or incomplete."
    else:
        decision = "reject"
        reason = "Trust score is too low. Fail-closed."

    manifest_sha256 = hashlib.sha256(
        json.dumps(manifest, sort_keys=True).encode("utf-8")
    ).hexdigest()

    return {
        "stage": 310,
        "url": url,
        "decision": decision,
        "trust_score": trust_score,
        "breakdown": breakdown,
        "reason": reason,
        "policy": {
            "accept_threshold": 0.85,
            "pending_threshold": 0.45,
            "reject_below": 0.45,
            "fail_closed": True
        },
        "evidence": {
            "manifest_sha256": manifest_sha256,
            "policy_version": claims.get("policy_version", "unknown"),
            "sigstore_present": bool(claims.get("sigstore")),
            "created_at": datetime.utcnow().isoformat() + "Z"
        }
    }

@app.route("/", methods=["GET"])
def index():
    return render_template_string(HTML, result=None, history=HISTORY)

@app.route("/verify", methods=["POST"])
def verify():
    url = request.form.get("url", "")
    manifest_text = request.form.get("manifest", "{}")

    try:
        manifest = json.loads(manifest_text)
        result = calculate_trust(url, manifest)
    except Exception as e:
        result = {
            "stage": 310,
            "url": url,
            "decision": "reject",
            "trust_score": 0.0,
            "breakdown": {
                "integrity": 0,
                "execution": 0,
                "identity": 0,
                "time": 0,
                "sigstore": 0
            },
            "reason": f"Invalid manifest JSON: {e}",
            "policy": {"fail_closed": True},
            "evidence": {"created_at": datetime.utcnow().isoformat() + "Z"}
        }

    HISTORY.insert(0, {
        "created_at": result["evidence"]["created_at"],
        "decision": result["decision"],
        "trust_score": result["trust_score"],
        "url": url
    })

    return render_template_string(HTML, result=result, history=HISTORY)

@app.route("/api/verify", methods=["POST"])
def api_verify():
    data = request.get_json(force=True)
    url = data.get("url", "")
    manifest = data.get("manifest", {})
    result = calculate_trust(url, manifest)
    return jsonify(result)

@app.route("/api/health")
def health():
    return jsonify({
        "ok": True,
        "stage": 310,
        "service": "remeda-trust-score-visualization"
    })

if __name__ == "__main__":
    app.run(host="127.0.0.1", port=3100, debug=True)