From a61c80c4140564b1a4daf19d9086c05a8f276c20 Mon Sep 17 00:00:00 2001
From: cel <cel@f/6sQ6d2CMxRUhLpspgGIulDxDCwYD7DzFzPNr7u5AU=.ed25519>
Date: Fri, 30 Nov 2018 14:57:12 -1000
Subject: Show git signatures

- Add /git/signature page to verify signatures using gpg
- Show link to signature pages for tag and commit objects
---
 lib/serve.js | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

(limited to 'lib/serve.js')

diff --git a/lib/serve.js b/lib/serve.js
index a28f758..fc8aa7b 100644
--- a/lib/serve.js
+++ b/lib/serve.js
@@ -1870,6 +1870,7 @@ Serve.prototype.git = function (url) {
     case 'blob': return this.gitBlob(m[2])
     case 'raw': return this.gitRaw(m[2])
     case 'diff': return this.gitDiff(m[2])
+    case 'signature': return this.gitSignature(m[2])
     case 'line-comment': return this.gitLineComment(m[2])
     default: return this.respond(404, 'Not found')
   }
@@ -1985,6 +1986,67 @@ Serve.prototype.gitObject = function (rev) {
   })
 }
 
+Serve.prototype.gitSignature = function (id) {
+  var self = this
+  if (!/[0-9a-f]{24}/.test(id)) {
+    return pull(
+      ph('div.error', 'not a git object id'),
+      self.wrapPage('git'),
+      self.respondSink(400)
+    )
+  }
+  if (!u.isRef(self.query.msg)) return pull(
+    ph('div.error', 'missing message id'),
+    self.wrapPage('git signature for ' + id),
+    self.respondSink(400)
+  )
+
+  self.app.git.openObject({
+    obj: id,
+    msg: self.query.msg,
+    type: self.query.type,
+  }, function (err, obj) {
+    if (err) return handleError(err)
+    var msgDate = new Date(obj.msg.value.timestamp)
+    self.app.verifyGitObjectSignature(obj, function (err, verification) {
+      if (err) return handleError(err)
+      var objPath = '/git/object/' + id + '?msg=' + encodeURIComponent(obj.msg.key)
+      pull(
+        ph('section', [
+          ph('h3', [
+            ph('a', {href: self.app.render.toUrl(objPath)}, id), ': ',
+            ph('a', {href: ''}, 'signature')
+          ]),
+          ph('div', [
+            self.phIdLink(obj.msg.value.author), ' pushed ',
+            ph('a', {
+              href: self.app.render.toUrl(obj.msg.key),
+              title: msgDate.toLocaleString(),
+            }, htime(msgDate))
+          ]),
+          ph('pre', u.escapeHTML(verification.output))
+          /*
+          verification.goodsig ? 'good' : 'bad',
+          ph('pre', u.escapeHTML(verification.status))
+          */
+        ]),
+        self.wrapPage('git signature for ' + id),
+        self.respondSink(200)
+      )
+    })
+  })
+
+  function handleError(err) {
+    if (err && err.name === 'BlobNotFoundError')
+      return self.askWantBlobs(err.links)
+    if (err) return pull(
+      pull.once(u.renderError(err).outerHTML),
+      self.wrapPage('git signature for ' + id),
+      self.respondSink(400)
+    )
+  }
+}
+
 Serve.prototype.gitCommit = function (rev) {
   var self = this
   if (!/[0-9a-f]{24}/.test(rev)) {
@@ -2073,6 +2135,12 @@ Serve.prototype.gitCommit = function (rev) {
               pull.once(commit.tree),
               self.gitObjectLinks(obj.msg.key, 'tree')
             )]) : '',
+            commit.gpgsig ? ph('div', [
+              ph('a', {href: self.app.render.toUrl(
+                '/git/signature/' + rev + '?msg=' + encodeURIComponent(self.query.msg)
+              )}, 'signature'),
+              commit.signatureVersion ? [' from ', ph('code', u.escapeHTML(commit.signatureVersion))] : ''
+            ]) : '',
             h('blockquote',
                self.app.render.gitCommitBody(commit.body)).outerHTML,
             ph('h4', 'files'),
@@ -2203,6 +2271,12 @@ Serve.prototype.gitTag = function (rev) {
               self.gitObjectLinks(obj.msg.key, tag.type)
             ), ' ',
             ph('code', u.escapeHTML(tag.tag)),
+            tag.gpgsig ? ph('div', [
+              ph('a', {href: self.app.render.toUrl(
+                '/git/signature/' + rev + '?msg=' + encodeURIComponent(self.query.msg)
+              )}, 'signature'),
+              tag.signatureVersion ? [' from ', ph('code', u.escapeHTML(tag.signatureVersion))] : ''
+            ]) : '',
             h('pre', self.app.render.linkify(tag.body)).outerHTML,
           ]
         ]),
-- 
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