git ssb

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var url = require('url')
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var pull = require('pull-stream')
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var once = pull.once
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var cat = require('pull-cat')
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var paramap = require('pull-paramap')
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var multicb = require('multicb')
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var JsDiff = require('diff')
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var GitRepo = require('pull-git-repo')
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var gitPack = require('pull-git-pack')
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var u = require('../util')
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var paginate = require('pull-paginate')
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var markdown = require('../markdown')
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var forms = require('../forms')
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var ssbRef = require('ssb-ref')
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var zlib = require('zlib')
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var toPull = require('stream-to-pull-stream')
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var h = require('pull-hyperscript')
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var getObjectMsgId = require('../../lib/obj-msg-id')
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function extend(obj, props) {
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  for (var k in props)
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    obj[k] = props[k]
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  return obj
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}
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module.exports = function (web) {
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  return new RepoRoutes(web)
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}
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function RepoRoutes(web) {
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  this.web = web
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  this.issues = require('./issues')(this, web)
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  this.pulls = require('./pulls')(this, web)
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}
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var R = RepoRoutes.prototype
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function getRepoObjectString(repo, id, mode, cb) {
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  if (!id) return cb(null, '')
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  if (mode == 0160000) return cb(null,
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    'Subproject commit ' + id)
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  repo.getObjectFromAny(id, function (err, obj) {
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    if (err) return cb(err)
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    u.readObjectString(obj, cb)
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  })
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}
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/* Repo */
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R.getLineCommentThreads = function (req, repo, updateId, commitId, filename, cb) {
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  var self = this
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  var sbot = self.web.ssb
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  var lineCommentThreads = {}
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  pull(
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    sbot.backlinks ? sbot.backlinks.read({
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      query: [
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        {$filter: {
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          dest: updateId,
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          value: {
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            content: {
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              type: 'line-comment',
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              repo: repo.id,
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              updateId: updateId,
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              commitId: commitId,
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              filePath: filename
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            }
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          }
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        }}
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      ]
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    }) : pull(
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      sbot.links({
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        dest: updateId,
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        rel: 'updateId',
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        values: true
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      }),
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      pull.filter(function (msg) {
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        var c = msg && msg.value && msg.value.content
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        return c && c.type === 'line-comment'
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          && c.updateId === updateId
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          && c.commitId === commitId
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          && c.filePath === filename
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      })
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    ),
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    paramap(function (msg, cb) {
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      pull(
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        self.renderThread(req, repo, msg),
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        pull.collect(function (err, parts) {
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          if (err) return cb(err)
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          cb(null, {
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            line: msg.value.content.line,
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            html: parts.join(''),
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          })
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        })
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      )
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    }, 4),
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    pull.drain(function (thread) {
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      lineCommentThreads[thread.line] = thread.html
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    }, function (err) {
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      if (err) return cb(err)
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      cb(null, lineCommentThreads)
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    })
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  )
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}
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R.renderThread = function (req, repo, msg) {
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  var newestMsg = msg
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  var root = msg.key
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  var self = this
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  return h('div', [
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    pull(
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      cat([
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        pull.once(msg),
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        self.web.ssb.links({
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          dest: root,
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          values: true
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        }),
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      ]),
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      pull.unique('key'),
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      u.decryptMessages(self.web.ssb),
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      u.readableMessages(),
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      self.web.addAuthorName(),
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      u.sortMsgs(),
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      pull.filter(function (msg) {
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        var c = msg && msg.value && msg.value.content
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        return c && (c.type === 'post'
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          || msg.key === root)
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      }),
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      pull.through(function (msg) {
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        // TODO: correctly calculate the thread branches
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        if (msg.value
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        && msg.value.timestamp > newestMsg.value.timestamp)
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          newestMsg = msg
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      }),
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      pull.map(function (msg) {
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        return self.renderLineComment(req, repo, msg)
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      })
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    ),
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    self.web.isPublic ? '' :
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      pull.once(forms.lineCommentReply(req, root, newestMsg.key))
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  ])
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}
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R.renderLineComment = function (req, repo, msg) {
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  var c = msg && msg.value && msg.value.content
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  return h('section', {class: 'collapse'}, [
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    h('div', [
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      u.link([msg.value.author], msg.authorName),
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      ' ',
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      h('tt', {class: 'right-bar item-id'}, msg.key),
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      ' · ',
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      h('a', {href: u.encodeLink(msg.key) + '#' + encodeURIComponent(msg.key)}, new Date(msg.value.timestamp).toLocaleString(req._locale)),
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    ]),
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    markdown(c.text, repo)
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  ])
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}
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R.serveRepoPage = function (req, repo, path) {
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  var self = this
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  var defaultBranch = 'master'
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  var query = req._u.query
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  if (query.rev != null) {
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    // Allow navigating revs using GET query param.
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    // Replace the branch in the path with the rev query value
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    path[0] = path[0] || 'tree'
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    path[1] = query.rev
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    req._u.pathname = u.encodeLink([repo.id].concat(path))
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    delete req._u.query.rev
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    delete req._u.search
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    return self.web.serveRedirect(req, url.format(req._u))
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  }
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  // get branch
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  return path[1] ?
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    R_serveRepoPage2.call(self, req, repo, path) :
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    u.readNext(function (cb) {
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      // TODO: handle this in pull-git-repo or ssb-git-repo
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      repo.getSymRef('HEAD', true, function (err, ref) {
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        if (err) return cb(err)
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        repo.resolveRef(ref, function (err, rev) {
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          path[1] = rev ? ref : null
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          cb(null, R_serveRepoPage2.call(self, req, repo, path))
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        })
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      })
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    })
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}
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function R_serveRepoPage2(req, repo, path) {
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  var branch = path[1]
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  var filePath = path.slice(2)
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  switch (path[0]) {
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    case undefined:
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    case '':
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      return this.serveRepoTree(req, repo, branch, [])
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    case 'activity':
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      return this.serveRepoActivity(req, repo, branch)
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    case 'commits':
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      return this.serveRepoCommits(req, repo, branch)
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    case 'commit':
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      return this.serveRepoCommit(req, repo, path[1])
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    case 'tag':
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      return this.serveRepoTag(req, repo, branch, filePath)
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    case 'tree':
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      return this.serveRepoTree(req, repo, branch, filePath)
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    case 'blob':
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      return this.serveRepoBlob(req, repo, branch, filePath)
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    case 'raw':
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      return this.serveRepoRaw(req, repo, branch, filePath)
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    case 'digs':
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      return this.serveRepoDigs(req, repo)
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    case 'fork':
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      return this.serveRepoForkPrompt(req, repo)
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    case 'forks':
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      return this.serveRepoForks(req, repo)
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    case 'issues':
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      switch (path[1]) {
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        case 'new':
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          if (filePath.length == 0)
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            return this.issues.serveRepoNewIssue(req, repo)
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          break
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        default:
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          return this.issues.serveRepoIssues(req, repo, false)
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      }
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    case 'pulls':
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      return this.issues.serveRepoIssues(req, repo, true)
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    case 'compare':
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      return this.pulls.serveRepoCompare(req, repo)
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    case 'comparing':
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      return this.pulls.serveRepoComparing(req, repo)
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    case 'info':
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      switch (path[1]) {
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        case 'refs':
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          return this.serveRepoRefs(req, repo)
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        default:
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          return this.web.serve404(req)
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      }
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    case 'objects':
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      switch (path[1]) {
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        case 'info':
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          switch (path[2]) {
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            case 'packs':
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              return this.serveRepoPacksInfo(req, repo)
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            default:
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              return this.web.serve404(req)
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          }
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        case 'pack':
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          return this.serveRepoPack(req, repo, filePath.join('/'))
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        default:
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          var hash = path[1] + path[2]
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          if (hash.length === 40) {
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            return this.serveRepoObject(req, repo, hash)
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          }
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          return this.web.serve404(req)
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      }
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    case 'HEAD':
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      return this.serveRepoHead(req, repo)
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    default:
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      return this.web.serve404(req)
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  }
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}
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R.serveRepoNotFound = function (req, id, err) {
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  return this.web.serveTemplate(req, req._t('error.RepoNotFound'), 404)
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  (pull.values([
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    '<h2>' + req._t('error.RepoNotFound') + '</h2>',
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    '<p>' + req._t('error.RepoIdNotFound', id) + '</p>',
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    '<pre>' + u.escape(err.stack) + '</pre>'
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  ]))
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}
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R.serveRepoTemplate = function (req, repo, page, branch, titleTemplate, body) {
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  var self = this
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  var gitUrl = 'ssb://' + repo.id
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  var host = req.headers.host || '127.0.0.1:7718'
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  var path = '/' + encodeURIComponent(repo.id)
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  var httpUrl = 'http://' + encodeURI(host) + path
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  var digsPath = [repo.id, 'digs']
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  var cloneUrls = '<div class="clone-urls">' +
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    '<select class="custom-dropdown clone-url-protocol" ' +
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     'onchange="with(this.nextSibling.firstChild) {' +
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       'value = this.value; select() }">' +
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      '<option selected="selected" value="' + gitUrl + '">SSB</option>' +
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      '<option class="http-clone-url" value="' + httpUrl + '">HTTP</option>' +
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    '</select>' +
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    '<div class="clone-url-wrapper">' +
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    '<input class="clone-url" readonly="readonly" ' +
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      'value="ssb://' + repo.id + '" size="45" ' +
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      'onclick="this.select()"/>' +
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    '<script>' +
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      'var httpOpt = document.querySelector(".http-clone-url")\n' +
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      'if (location.protocol === "https:") httpOpt.text = "HTTPS"\n' +
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      'httpOpt.value = location.origin + "' + path + '"\n' +
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    '</script>' +
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    '</div>' +
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    '</div>'
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  var done = multicb({ pluck: 1, spread: true })
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  self.web.getRepoName(repo.feed, repo.id, done())
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  self.web.about.getName(repo.feed, done())
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  self.web.getVotes(repo.id, done())
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  if (repo.upstream) {
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    self.web.getRepoName(repo.upstream.feed, repo.upstream.id, done())
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    self.web.about.getName(repo.upstream.feed, done())
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  }
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  return u.readNext(function (cb) {
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    done(function (err, repoName, authorName, votes, upstreamName, upstreamAuthorName) {
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      if (err) return cb(null, self.web.serveError(req, err))
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      var upvoted = votes.upvoters[self.web.myId] > 0
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      var upstreamLink = !repo.upstream ? '' :
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        u.link([repo.upstream])
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      var title = titleTemplate ? titleTemplate
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        .replace(/%\{repo\}/g, repoName)
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        .replace(/%\{author\}/g, authorName)
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        : (authorName ? authorName + '/' : '') + repoName
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      var isPublic = self.web.isPublic
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      var isLocal = !isPublic
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      cb(null, self.web.serveTemplate(req, title)(cat([
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        h('div', {class: 'repo-title'}, [
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          h('form', {class: 'right-bar', action: '', method: 'post'}, [
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            h('strong', {class: 'ml2 mr1'}, u.link(digsPath, votes.upvotes)),
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            h('button',
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              extend(
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                {class: 'btn', name: 'action', value: 'vote'},
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                isPublic ? {disabled: 'disabled'} : {type: 'submit'}
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              ), [
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                h('i', '✌ '),
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                h('span', req._t(isLocal && upvoted ? 'Undig' : 'Dig'))
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              ]
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            ),
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            u.when(isLocal, () => cat([
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              h('input', {type: 'hidden', name: 'value', value: (upvoted ? '0' : '1')}),
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              h('input', {type: 'hidden', name: 'id', value: u.escape(repo.id)})
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            ])),
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            h('a', {href: u.encodeLink([repo.id, 'forks']), title: req._t('Forks'), class: 'ml2 mr1'}, '+'),
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            u.when(isLocal, () =>
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              h('button', {class: 'btn', type: 'submit', name: 'action', value: 'fork-prompt'}, [
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                h('i', '⑂ '),
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                once(req._t('Fork'))
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              ])
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            )
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          ]),
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          forms.name(req, isLocal, repo.id, repoName, 'repo-name', null, req._t('repo.Rename'),
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            h('h2', {class: 'bgslash'},
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              (authorName ? u.link([repo.feed], authorName) + ' / ' : '') +
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              u.link([repo.id], repoName) +
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              (repo.private ? ' ' + u.privateIcon(req) : ''))
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          ),
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        ]),
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        u.when(repo.upstream, () =>
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          h('small', {class: 'bgslash'}, req._t('ForkedFrom', {
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            repo: `${u.link([repo.upstream.feed], upstreamAuthorName)} / ${u.link([repo.upstream.id], upstreamName)}`
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          }))
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        ),
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        u.nav([
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          [[repo.id], req._t('Code'), 'code'],
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          [[repo.id, 'activity'], req._t('Activity'), 'activity'],
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          [[repo.id, 'commits', branch||''], req._t('Commits'), 'commits'],
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          [[repo.id, 'issues'], self.web.indexCache ? req._t('IssuesN', {
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            count: self.web.indexCache.getIssuesCount(repo.id, '…')
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          }) : req._t('Issues'), 'issues'],
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          [[repo.id, 'pulls'], self.web.indexCache ? req._t('PullRequestsN', {
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            count: self.web.indexCache.getPRsCount(repo.id, '…')
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          }) : req._t('PullRequests'), 'pulls']
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        ], page, cloneUrls),
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        body
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      ])
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      ))
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    })
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  })
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}
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R.renderEmptyRepo = function (req, repo) {
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  if (repo.feed != this.web.myId)
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    return h('section', [
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      h('h3', req._t('EmptyRepo'))
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    ])
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  var gitUrl = 'ssb://' + repo.id
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  return h('section', [
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    h('h3', req._t('initRepo.GettingStarted')),
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    h('h4', req._t('initRepo.CreateNew')),
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    preInitRepo(req, gitUrl),
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    h('h4', req._t('initRepo.PushExisting')),
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    preRemote(gitUrl)
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  ])
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}
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var preInitRepo = (req, gitUrl) => h('pre',
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`touch ${req._t('initRepo.README')}.md
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git init
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git add ${req._t('initRepo.README')}.md
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git commit -m ${req._t('initRepo.InitialCommit')}
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git remote add origin ${gitUrl}
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git push -u origin master`)
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var preRemote = (gitUrl) => h('pre',
399
`git remote add origin ${gitUrl}
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git push -u origin master`)
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R.serveRepoTree = function (req, repo, rev, path) {
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  var type = repo.isCommitHash(rev) ? 'Tree' : 'Branch'
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  var title =
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    (path.length ? `${path.join('/')} · ` : '') +
407
    '%{author}/%{repo}' +
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    (repo.head == `refs/heads/${rev}` ? '' : `@${rev}`)
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  return this.serveRepoTemplate(req, repo, 'code', rev, title,
411
    u.readNext((cb) => {
412
      if (!rev) return cb(null, this.renderEmptyRepo(req, repo))
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      repo.getLatestAvailableRev(rev, 10e3, (err, revGot, numSkipped) => {
414
        if (err) return cb(err)
415
        cb(null, cat([
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          h('section', {class: 'branch-info light-grey', method: 'get'}, [
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            h('form', {action: '', method: 'get'},
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              h('h3', {class: 'rev-menu-line'}, [
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                h('span', `${req._t(type)}: `),
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                this.revMenu(req, repo, rev)
421
              ])
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            ),
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            u.when(numSkipped > 0, () =>
424
              h('div', {class: 'missing-blobs-warning mt2'},
425
                h('em', req._t('missingBlobsWarning', numSkipped))
426
              )
427
            ),
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            u.when(type === 'Branch', () => renderRepoLatest(req, repo, revGot))
429
          ]),
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          h('section', {class: 'files'}, renderRepoTree(req, repo, revGot, path)),
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          this.renderRepoReadme(req, repo, revGot, path)
432
        ]))
433
      })
434
    }))
435
}
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/* Repo activity */
438
439
R.serveRepoActivity = function (req, repo, branch) {
440
  var self = this
441
  var title = req._t('Activity') + ' · %{author}/%{repo}'
442
  return self.serveRepoTemplate(req, repo, 'activity', branch, title, cat([
443
    h('h3', req._t('Activity')),
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    pull(
445
      self.web.ssb.links({
446
        dest: repo.id,
447
        rel: 'repo',
448
        values: true
449
      }),
450
      pull.unique('key'),
451
      u.decryptMessages(self.web.ssb),
452
      u.sortMsgs(true),
453
      pull.asyncMap(renderRepoUpdate.bind(self, req, repo, false))
454
    ),
455
    u.readOnce(function (cb) {
456
      var done = multicb({ pluck: 1, spread: true })
457
      self.web.about.getName(repo.feed, done())
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      self.web.getMsg(repo.id, done())
459
      done(function (err, authorName, msg) {
460
        if (err) return cb(err)
461
        self.web.renderFeedItem(req, {
462
          key: repo.id,
463
          value: msg.value,
464
          authorName: authorName
465
        }, cb)
466
      })
467
    })
468
  ]))
469
}
470
471
function renderRepoUpdate(req, repo, full, msg, cb) {
472
  var c = msg.value.content
473
474
  if (c.type != 'git-update') {
475
    return cb(null, '')
476
    // return renderFeedItem(msg, cb)
477
    // TODO: render post, issue, pull-request
478
  }
479
480
  var branches = []
481
  var tags = []
482
  if (c.refs) for (var name in c.refs) {
483
    var m = name.match(/^refs\/(heads|tags)\/(.*)$/) || [,, name]
484
    ;(m[1] == 'tags' ? tags : branches)
485
      .push({name: m[2], value: c.refs[name]})
486
  }
487
  var numObjects = c.objects ? Object.keys(c.objects).length : 0
488
489
  var dateStr = new Date(msg.value.timestamp).toLocaleString(req._locale)
490
491
  this.web.about.getName(msg.value.author, function (err, name) {
492
    if (err) return cb(err)
493
    cb(null, '<section class="collapse">' +
494
      u.link([msg.key], dateStr) + '<br>' +
495
      u.link([msg.value.author], name) + '<br>' +
496
497
      branches.map(function (update) {
498
        if (!update.value) {
499
          return '<s>' + u.escape(update.name) + '</s><br/>'
500
        } else {
501
          var commitLink = u.link([repo.id, 'commit', update.value])
502
          var branchLink = u.link([repo.id, 'tree', update.name])
503
          return branchLink + ' &rarr; <tt>' + commitLink + '</tt><br/>'
504
        }
505
      }).join('') +
506
      tags.map(function (update) {
507
        return update.value
508
          ? u.link([repo.id, 'tag', update.value], update.name)
509
          : '<s>' + u.escape(update.name) + '</s>'
510
      }).join(', ') +
511
      '</section>')
512
  })
513
}
514
515
/* Repo commits */
516
517
R.serveRepoCommits = function (req, repo, branch) {
518
  var query = req._u.query
519
  var title = req._t('Commits') + ' · %{author}/%{repo}'
520
  return this.serveRepoTemplate(req, repo, 'commits', branch, title, cat([
521
    pull.once('<h3>' + req._t('Commits') + '</h3>'),
522
    pull(
523
      repo.readLog(query.start || branch),
524
      pull.take(20),
525
      paramap(repo.getCommitParsed.bind(repo), 8),
526
      paginate(
527
        !query.start ? '' : function (first, cb) {
528
          cb(null, '&hellip;')
529
        },
530
        pull.map(renderCommit.bind(this, req, repo)),
531
        function (commit, cb) {
532
          cb(null, commit.parents && commit.parents[0] ?
533
            '<a href="?start=' + commit.id + '">' +
534
              req._t('Older') + '</a>' : '')
535
        }
536
      )
537
    )
538
  ]))
539
}
540
541
function renderCommit(req, repo, commit) {
542
  var commitPath = [repo.id, 'commit', commit.id]
543
  var treePath = [repo.id, 'tree', commit.id]
544
  return '<section class="collapse">' +
545
    '<strong>' + u.link(commitPath, commit.title) + '</strong><br>' +
546
    '<tt>' + commit.id + '</tt> ' +
547
      u.link(treePath, req._t('Tree')) + '<br>' +
548
    u.escape(commit.author.name) + ' &middot; ' +
549
    commit.author.date.toLocaleString(req._locale) +
550
    (commit.separateAuthor ? '<br>' + req._t('CommittedOn', {
551
      name: u.escape(commit.committer.name),
552
      date: commit.committer.date.toLocaleString(req._locale)
553
    }) : '') +
554
    '</section>'
555
}
556
557
/* Branch menu */
558
559
R.formatRevOptions = function (currentName) {
560
  return function (name) {
561
    var htmlName = u.escape(name)
562
    return '<option value="' + htmlName + '"' +
563
      (name == currentName ? ' selected="selected"' : '') +
564
      '>' + htmlName + '</option>'
565
  }
566
}
567
568
R.formatRevType = function(req, type) {
569
  return (
570
    type == 'heads' ? req._t('Branches') :
571
    type == 'tags' ? req._t('Tags') :
572
    type)
573
}
574
575
R.revMenu = function (req, repo, currentName) {
576
  var self = this
577
  return u.readOnce(function (cb) {
578
    repo.getRefNames(function (err, refs) {
579
      if (err) return cb(err)
580
      cb(null, '<select class="custom-dropdown" name="rev" onchange="this.form.submit()">' +
581
        Object.keys(refs).map(function (group) {
582
          return '<optgroup ' +
583
            'label="' + self.formatRevType(req, group) + '">' +
584
            refs[group].map(self.formatRevOptions(currentName)).join('') +
585
            '</optgroup>'
586
        }).join('') +
587
        '</select><noscript> ' +
588
        '<input type="submit" value="' + req._t('Go') + '"/></noscript>')
589
    })
590
  })
591
}
592
593
/* Repo tree */
594
595
function renderRepoLatest(req, repo, rev) {
596
  if (!rev) return pull.empty()
597
  return u.readOnce(function (cb) {
598
    repo.getCommitParsed(rev, function (err, commit) {
599
      if (err) return cb(err)
600
      var commitPath = [repo.id, 'commit', commit.id]
601
      var actor = commit.separateAuthor ? 'author' : 'committer'
602
      var actionKey = actor.slice(0,1).toUpperCase() + actor.slice(1) + 'ReleasedCommit'
603
      cb(null,
604
        '<div class="mt2">' +
605
          '<span>' +
606
            req._t(actionKey, {
607
              name: u.escape(commit[actor].name),
608
              commitName: u.link(commitPath, commit.title)
609
            }) +
610
          '</span>' +
611
          '<tt class="float-right">' +
612
            req._t('LatestOn', {
613
              commitId: commit.id.slice(0, 7),
614
              date: commit[actor].date.toLocaleString(req._locale)
615
            }) +
616
          '</tt>' +
617
        '</div>'
618
      )
619
    })
620
  })
621
}
622
623
// breadcrumbs
624
function linkPath(basePath, path) {
625
  path = path.slice()
626
  var last = path.pop()
627
  return path.map(function (dir, i) {
628
    return u.link(basePath.concat(path.slice(0, i+1)), dir)
629
  }).concat(last).join(' / ')
630
}
631
632
function renderRepoTree(req, repo, rev, path) {
633
  var source =  repo.readDir(rev,path)
634
  var pathLinks = path.length === 0 ? '' :
635
    ': ' + linkPath([repo.id, 'tree'], [rev].concat(path))
636
637
  var location = once('')
638
  if (path.length !== 0) {
639
    var link = linkPath([repo.id, 'tree'], [rev].concat(path))
640
    location = h('div', {class: 'fileLocation'}, `${req._t('Files')}: ${link}`)
641
  }
642
643
  return cat([
644
    location,
645
    h('table', {class: "files w-100"}, u.sourceMap(source, file =>
646
      h('tr', [
647
        h('td', [
648
          h('i', fileIcon(file))
649
        ]),
650
        h('td', u.link(filePath(file), file.name))
651
      ])
652
    ))
653
  ])
654
655
  function fileIcon(file) {
656
    return fileType(file) === 'tree' ? '📁' : '📄'
657
  }
658
659
  function filePath(file) {
660
    var type = fileType(file)
661
    return [repo.id, type, rev].concat(path, file.name)
662
  }
663
664
  function fileType(file) {
665
    if (file.mode === 040000) return 'tree'
666
    else if (file.mode === 0160000) return 'commit'
667
    else return 'blob'
668
  }
669
}
670
671
/* Repo readme */
672
673
R.renderRepoReadme = function (req, repo, branch, path) {
674
  var self = this
675
  return u.readNext(function (cb) {
676
    pull(
677
      repo.readDir(branch, path),
678
      pull.filter(function (file) {
679
        return /readme(\.|$)/i.test(file.name)
680
      }),
681
      pull.take(1),
682
      pull.collect(function (err, files) {
683
        if (err) return cb(null, pull.empty())
684
        var file = files[0]
685
        if (!file)
686
          return cb(null, pull.once(path.length ? '' :
687
            '<p>' + req._t('NoReadme') + '</p>'))
688
        repo.getObjectFromAny(file.id, function (err, obj) {
689
          if (err) return cb(err)
690
          cb(null, cat([
691
            pull.once('<section class="readme">'),
692
            self.web.renderObjectData(obj, file.name, repo, branch, path),
693
            pull.once('</section>')
694
          ]))
695
        })
696
      })
697
    )
698
  })
699
}
700
701
/* Repo commit */
702
703
R.serveRepoCommit = function (req, repo, rev) {
704
  var self = this
705
  return u.readNext(function (cb) {
706
    repo.getCommitParsed(rev, function (err, commit) {
707
      if (err) return cb(null,
708
        self.serveRepoTemplate(req, repo, null, rev, `%{author}/%{repo}@${rev}`,
709
          pull.once(self.web.renderError(err))))
710
      getObjectMsgId(repo, commit.id, function (err, objMsgId) {
711
        if (err) return cb(null,
712
          self.serveRepoTemplate(req, repo, null, rev, `%{author}/%{repo}@${rev}`,
713
            pull.once(self.web.renderError(err))))
714
        var commitPath = [repo.id, 'commit', commit.id]
715
        var treePath = [repo.id, 'tree', commit.id]
716
        var title = u.escape(commit.title) + ' · ' +
717
          '%{author}/%{repo}@' + commit.id.substr(0, 8)
718
        cb(null, self.serveRepoTemplate(req, repo, null, rev, title, cat([
719
          pull.once(
720
          '<h3>' + u.link(commitPath,
721
            req._t('CommitRev', {rev: rev})) + '</h3>' +
722
          '<section class="collapse">' +
723
          '<div class="right-bar">' +
724
            u.link(treePath, req._t('BrowseFiles')) +
725
          '</div>' +
726
          '<h4>' + u.linkify(u.escape(commit.title)) + '</h4>' +
727
          (commit.body ? u.linkify(u.pre(commit.body)) : '') +
728
          (commit.separateAuthor ? req._t('AuthoredOn', {
729
            name: u.escape(commit.author.name),
730
            date: commit.author.date.toLocaleString(req._locale)
731
          }) + '<br/>' : '') +
732
          req._t('CommittedOn', {
733
            name: u.escape(commit.committer.name),
734
            date: commit.committer.date.toLocaleString(req._locale)
735
          }) + '<br/>' +
736
          commit.parents.map(function (id) {
737
            return req._t('Parent') + ': ' +
738
              u.link([repo.id, 'commit', id], id)
739
          }).join('<br>') +
740
          '</section>' +
741
          '<section><h3>' + req._t('FilesChanged') + '</h3>'),
742
          // TODO: show diff from all parents (merge commits)
743
          self.renderDiffStat(req, [repo, repo], [commit.parents[0], commit.id], commit.id, objMsgId),
744
          pull.once('</section>')
745
        ])))
746
      })
747
    })
748
  })
749
}
750
751
/* Repo tag */
752
753
R.serveRepoTag = function (req, repo, rev, path) {
754
  var self = this
755
  return u.readNext(function (cb) {
756
    repo.getTagParsed(rev, function (err, tag) {
757
      if (err) {
758
        if (/Expected tag, got commit/.test(err.message)) {
759
          req._u.pathname = u.encodeLink([repo.id, 'commit', rev].concat(path))
760
          return cb(null, self.web.serveRedirect(req, url.format(req._u)))
761
        }
762
        return cb(null, self.web.serveError(req, err))
763
      }
764
765
      var title = req._t('TagName', {
766
        tag: u.escape(tag.tag)
767
      }) + ' · %{author}/%{repo}'
768
      var body = (tag.title + '\n\n' +
769
        tag.body.replace(/-----BEGIN PGP SIGNATURE-----\n[^.]*?\n-----END PGP SIGNATURE-----\s*$/, '')).trim()
770
      var date = tag.tagger.date
771
      cb(null, self.serveRepoTemplate(req, repo, 'tags', tag.object, title,
772
        pull.once(
773
          '<section class="collapse">' +
774
          '<h3>' + u.link([repo.id, 'tag', rev], tag.tag) + '</h3>' +
775
          req._t('TaggedOn', {
776
            name: u.escape(tag.tagger.name),
777
            date: date && date.toLocaleString(req._locale)
778
          }) + '<br/>' +
779
        u.link([repo.id, tag.type, tag.object]) +
780
        u.linkify(u.pre(body)) +
781
        '</section>')))
782
    })
783
  })
784
}
785
786
787
/* Diff stat */
788
789
R.renderDiffStat = function (req, repos, treeIds, commit, updateId) {
790
  var self = this
791
  if (treeIds.length == 0) treeIds = [null]
792
  var id = treeIds[0]
793
  var lastI = treeIds.length - 1
794
  var oldTree = treeIds[0]
795
  var changedFiles = []
796
  var source = GitRepo.diffTrees(repos, treeIds, true)
797
798
  return cat([
799
    h('table', u.sourceMap(source, item => {
800
      var filename = u.escape(item.filename = item.path.join('/'))
801
      var oldId = item.id && item.id[0]
802
      var newId = item.id && item.id[lastI]
803
      var oldMode = item.mode && item.mode[0]
804
      var newMode = item.mode && item.mode[lastI]
805
      var action =
806
        !oldId && newId ? req._t('action.added') :
807
        oldId && !newId ? req._t('action.deleted') :
808
        oldMode != newMode ? req._t('action.changedMode', {
809
          old: oldMode.toString(8),
810
          new: newMode.toString(8)
811
        }) : req._t('changed')
812
      if (item.id)
813
        changedFiles.push(item)
814
      var blobsPath = item.id[1]
815
        ? [repos[1].id, 'blob', treeIds[1]]
816
        : [repos[0].id, 'blob', treeIds[0]]
817
      var rawsPath = item.id[1]
818
        ? [repos[1].id, 'raw', treeIds[1]]
819
        : [repos[0].id, 'raw', treeIds[0]]
820
      item.blobPath = blobsPath.concat(item.path)
821
      item.rawPath = rawsPath.concat(item.path)
822
      var fileHref = item.id ?
823
        '#' + encodeURIComponent(item.path.join('/')) :
824
        u.encodeLink(item.blobPath)
825
826
      return h('tr', [
827
        h('td', [
828
          h('a', {href: fileHref}, filename)
829
        ]),
830
        h('td', action)
831
      ])
832
    })),
833
    pull(
834
      pull.values(changedFiles),
835
      paramap(function (item, cb) {
836
        var extension = u.getExtension(item.filename)
837
        if (extension in u.imgMimes) {
838
          var filename = u.escape(item.filename)
839
          return cb(null,
840
            '<pre><table class="code">' +
841
            '<tr><th id="' + u.escape(item.filename) + '">' +
842
              filename + '</th></tr>' +
843
            '<tr><td><img src="' + u.encodeLink(item.rawPath) + '"' +
844
            ' alt="' + filename + '"/></td></tr>' +
845
            '</table></pre>')
846
        }
847
        var done = multicb({ pluck: 1, spread: true })
848
        var mode0 = item.mode && item.mode[0]
849
        var modeI = item.mode && item.mode[lastI]
850
        var isSubmodule = (modeI == 0160000)
851
        var repo = repos[1]
852
        getRepoObjectString(repos[0], item.id[0], mode0, done())
853
        getRepoObjectString(repos[1], item.id[lastI], modeI, done())
854
        self.getLineCommentThreads(req, repo, updateId, commit, item.filename, done())
855
        done(function (err, strOld, strNew, lineCommentThreads) {
856
          if (err) return cb(err)
857
          cb(null, htmlLineDiff(req, repo, updateId, commit, item.filename, item.filename,
858
            strOld, strNew,
859
            u.encodeLink(item.blobPath), !isSubmodule, lineCommentThreads))
860
        })
861
      }, 4)
862
    )
863
  ])
864
}
865
866
function htmlLineDiff(req, repo, updateId, commit, filename, anchor, oldStr, newStr, blobHref,
867
    showViewLink, lineCommentThreads) {
868
  return '<div class="code-wrap"><table class="code">' +
869
    '<tr><th colspan=3 id="' + u.escape(anchor) + '">' + filename +
870
    (showViewLink === false ? '' :
871
      '<span class="right-bar">' +
872
        '<a href="' + blobHref + '">' + req._t('View') + '</a> ' +
873
      '</span>') +
874
    '</th></tr>' +
875
    (oldStr.length + newStr.length > 200000
876
      ? '<tr><td class="diff-info" colspan=3>' + req._t('diff.TooLarge') + '<br>' +
877
        req._t('diff.OldFileSize', {bytes: oldStr.length}) + '<br>' +
878
        req._t('diff.NewFileSize', {bytes: newStr.length}) + '</td></tr>'
879
      : tableDiff(req, repo, updateId, commit, oldStr, newStr, filename, lineCommentThreads)) +
880
    '</table></div>'
881
}
882
883
function tableDiff(req, repo, updateId, commit, oldStr, newStr, filename, lineCommentThreads) {
884
  var query = req._u.query
885
  var diff = JsDiff.structuredPatch('', '', oldStr, newStr)
886
  var groups = diff.hunks.map(function (hunk) {
887
    var oldLine = hunk.oldStart
888
    var newLine = hunk.newStart
889
    var header = '<tr class="diff-hunk-header"><td colspan=2></td><td>' +
890
      '@@ -' + oldLine + ',' + hunk.oldLines + ' ' +
891
      '+' + newLine + ',' + hunk.newLines + ' @@' +
892
      '</td></tr>'
893
    return [header].concat(hunk.lines.map(function (line) {
894
      var s = line[0]
895
      if (s == '\\') return
896
      var html = u.highlight(line, u.getExtension(filename))
897
      var trClass = s == '+' ? 'diff-new' : s == '-' ? 'diff-old' : ''
898
      var lineNums = [s == '+' ? '' : oldLine++, s == '-' ? '' : newLine++]
899
      var id = [filename].concat(lineNums).join('-')
900
      var newLineNum = lineNums[lineNums.length-1]
901
      return '<tr id="' + u.escape(id) + '" class="' + trClass + '">' +
902
        lineNums.map(function (num, i) {
903
          var idEnc = encodeURIComponent(id)
904
          return '<td class="code-linenum">' +
905
            (num ? '<a href="#' + idEnc + '">' +
906
              num + '</a>' +
907
              (updateId && i === lineNums.length-1 && s !== '-' ?
908
                // TODO: use a more descriptive icon for the comment action
909
                ' <a href="?comment=' + idEnc + '#' + idEnc + '">…</a>'
910
              : '')
911
            : '') + '</td>'
912
        }).join('') +
913
        '<td class="code-text">' + html + '</td></tr>' +
914
        (commit && query.comment === id ?
915
          '<tr><td colspan=4>' +
916
            forms.lineComment(req, repo, updateId, commit, filename, newLineNum) +
917
          '</td></tr>'
918
        : '') +
919
        (lineCommentThreads[newLineNum] ? 
920
          '<tr><td colspan=4>' +
921
            lineCommentThreads[newLineNum] +
922
          '</td></tr>'
923
        : '')
924
    }))
925
  })
926
  return [].concat.apply([], groups).join('')
927
}
928
929
/* An unknown message linking to a repo */
930
931
R.serveRepoSomething = function (req, repo, id, msg, path) {
932
  return this.serveRepoTemplate(req, repo, null, null, null,
933
    pull.once('<section><h3>' + u.link([id]) + '</h3>' +
934
      u.json(msg) + '</section>'))
935
}
936
937
/* Repo update */
938
939
function objsArr(objs) {
940
  return Array.isArray(objs) ? objs :
941
    Object.keys(objs).map(function (sha1) {
942
      var obj = Object.create(objs[sha1])
943
      obj.sha1 = sha1
944
      return obj
945
    })
946
}
947
948
R.serveRepoUpdate = function (req, repo, msg, path) {
949
  var self = this
950
  var raw = req._u.query.raw != null
951
  var title = req._t('Update') + ' · %{author}/%{repo}'
952
  var c = msg.value.content
953
954
  if (raw)
955
    return self.serveRepoTemplate(req, repo, 'activity', null, title, pull.once(
956
      '<a href="?" class="raw-link header-align">' +
957
        req._t('Info') + '</a>' +
958
      '<h3>' + req._t('Update') + '</h3>' +
959
      '<section class="collapse">' +
960
        u.json(msg) + '</section>'))
961
962
  // convert packs to old single-object style
963
  if (c.indexes) {
964
    for (var i = 0; i < c.indexes.length; i++) {
965
      c.packs[i] = {
966
        pack: {link: c.packs[i].link},
967
        idx: c.indexes[i]
968
      }
969
    }
970
  }
971
972
  var commits = cat([
973
    c.objects && pull(
974
      pull.values(c.objects),
975
      pull.filter(function (obj) { return obj.type == 'commit' }),
976
      paramap(function (obj, cb) {
977
        self.web.getBlob(req, obj.link || obj.key, function (err, readObject) {
978
          if (err) return cb(err)
979
          GitRepo.getCommitParsed({read: readObject}, cb)
980
        })
981
      }, 8)
982
    ),
983
    c.packs && pull(
984
      pull.values(c.packs),
985
      paramap(function (pack, cb) {
986
        var done = multicb({ pluck: 1, spread: true })
987
        self.web.getBlob(req, pack.pack.link, done())
988
        self.web.getBlob(req, pack.idx.link, done())
989
        done(function (err, readPack, readIdx) {
990
          if (err) return cb(self.web.renderError(err))
991
          cb(null, gitPack.decodeWithIndex(repo, readPack, readIdx))
992
        })
993
      }, 4),
994
      pull.flatten(),
995
      pull.asyncMap(function (obj, cb) {
996
        if (obj.type == 'commit')
997
          GitRepo.getCommitParsed(obj, cb)
998
        else
999
          pull(obj.read, pull.drain(null, cb))
1000
      }),
1001
      pull.filter()
1002
    )
1003
  ])
1004
1005
  return self.serveRepoTemplate(req, repo, 'activity', null, title, cat([
1006
    pull.once('<a href="?raw" class="raw-link header-align">' +
1007
      req._t('Data') + '</a>' +
1008
      '<h3>' + req._t('Update') + '</h3>'),
1009
    pull(
1010
      pull.once(msg),
1011
      pull.asyncMap(renderRepoUpdate.bind(self, req, repo, true))
1012
    ),
1013
    (c.objects || c.packs) &&
1014
      pull.once('<h3>' + req._t('Commits') + '</h3>'),
1015
    pull(commits, pull.map(function (commit) {
1016
      return renderCommit(req, repo, commit)
1017
    }))
1018
  ]))
1019
}
1020
1021
/* Blob */
1022
1023
R.serveRepoBlob = function (req, repo, rev, path) {
1024
  var self = this
1025
  return u.readNext(function (cb) {
1026
    repo.getFile(rev, path, function (err, object) {
1027
      if (err) return cb(null, self.web.serveBlobNotFound(req, repo.id, err))
1028
      var type = repo.isCommitHash(rev) ? 'Tree' : 'Branch'
1029
      var pathLinks = path.length === 0 ? '' :
1030
        ': ' + linkPath([repo.id, 'tree'], [rev].concat(path))
1031
      var rawFilePath = [repo.id, 'raw', rev].concat(path)
1032
      var dirPath = path.slice(0, path.length-1)
1033
      var filename = path[path.length-1]
1034
      var extension = u.getExtension(filename)
1035
      var title = (path.length ? path.join('/') + ' · ' : '') +
1036
        '%{author}/%{repo}' +
1037
        (repo.head == 'refs/heads/' + rev ? '' : '@' + rev)
1038
      cb(null, self.serveRepoTemplate(req, repo, 'code', rev, title, cat([
1039
        pull.once('<section><form action="" method="get">' +
1040
          '<h3>' + req._t(type) + ': ' + rev + ' '),
1041
        self.revMenu(req, repo, rev),
1042
        pull.once('</h3></form>'),
1043
        type == 'Branch' && renderRepoLatest(req, repo, rev),
1044
        pull.once('</section><section class="collapse">' +
1045
          '<h3>' + req._t('Files') + pathLinks + '</h3>' +
1046
          '<div>' + object.length + ' bytes' +
1047
          '<span class="raw-link">' +
1048
            u.link(rawFilePath, req._t('Raw')) + '</span>' +
1049
          '</div></section>' +
1050
          '<section>'),
1051
        extension in u.imgMimes
1052
        ? pull.once('<img src="' + u.encodeLink(rawFilePath) +
1053
          '" alt="' + u.escape(filename) + '" />')
1054
        : self.web.renderObjectData(object, filename, repo, rev, dirPath),
1055
        pull.once('</section>')
1056
      ])))
1057
    })
1058
  })
1059
}
1060
1061
/* Raw blob */
1062
1063
R.serveRepoRaw = function (req, repo, branch, path) {
1064
  var self = this
1065
  return u.readNext(function (cb) {
1066
    repo.getFile(branch, path, function (err, object) {
1067
      if (err) return cb(null,
1068
        self.web.serveBuffer(404, req._t('error.BlobNotFound')))
1069
      var extension = u.getExtension(path[path.length-1])
1070
      var contentType = u.imgMimes[extension]
1071
      cb(null, pull(object.read, self.web.serveRaw(object.length, contentType)))
1072
    })
1073
  })
1074
}
1075
1076
/* Digs */
1077
1078
R.serveRepoDigs = function serveRepoDigs (req, repo) {
1079
  var self = this
1080
  return u.readNext(cb => {
1081
    var title = req._t('Digs') + ' · %{author}/%{repo}'
1082
    self.web.getVotes(repo.id, (err, votes) => {
1083
      cb(null, self.serveRepoTemplate(req, repo, null, null, title,
1084
        h('section', [
1085
          h('h3', req._t('Digs')),
1086
          h('div', `${req._t('Total')}: ${votes.upvotes}`),
1087
          h('ul', u.paraSourceMap(Object.keys(votes.upvoters), (feedId, cb) => {
1088
            self.web.about.getName(feedId, (err, name) => {
1089
              cb(null, h('li', u.link([feedId], name)))
1090
            })
1091
          }))
1092
        ])
1093
      ))
1094
    })
1095
  })
1096
}
1097
1098
/* Forks */
1099
1100
R.getForks = function (repo, includeSelf) {
1101
  var self = this
1102
  return pull(
1103
    cat([
1104
      includeSelf && pull.once(repo.id),
1105
      // get downstream repos
1106
      pull(
1107
        self.web.ssb.links({
1108
          dest: repo.id,
1109
          rel: 'upstream'
1110
        }),
1111
        pull.map('key')
1112
      ),
1113
      // look for other repos that previously had pull requests to this one
1114
      pull(
1115
        self.web.ssb.links({
1116
          dest: repo.id,
1117
          values: true,
1118
          rel: 'project'
1119
        }),
1120
        u.decryptMessages(self.web.ssb),
1121
        pull.filter(function (msg) {
1122
          var c = msg && msg.value && msg.value.content
1123
          return c && c.type == 'pull-request'
1124
        }),
1125
        pull.map(function (msg) { return msg.value.content.head_repo })
1126
      )
1127
    ]),
1128
    pull.unique(),
1129
    paramap(function (key, cb) {
1130
      self.web.getMsg(key, cb)
1131
    }, 4),
1132
    u.decryptMessages(self.web.ssb),
1133
    pull.filter(function (msg) {
1134
      var c = msg && msg.value && msg.value.content
1135
      return c && c.type == 'git-repo'
1136
    }),
1137
    paramap(function (msg, cb) {
1138
      self.web.getRepoFullName(msg.value.author, msg.key,
1139
          function (err, repoName, authorName) {
1140
        if (err) return cb(err)
1141
        cb(null, {
1142
          key: msg.key,
1143
          value: msg.value,
1144
          repoName: repoName,
1145
          authorName: authorName
1146
        })
1147
      })
1148
    }, 8)
1149
  )
1150
}
1151
1152
R.serveRepoForks = function (req, repo) {
1153
  var hasForks
1154
  var title = req._t('Forks') + ' · %{author}/%{repo}'
1155
  return this.serveRepoTemplate(req, repo, null, null, title, cat([
1156
    pull.once('<h3>' + req._t('Forks') + '</h3>'),
1157
    pull(
1158
      this.getForks(repo),
1159
      pull.map(function (msg) {
1160
        hasForks = true
1161
        return '<section class="collapse">' +
1162
          u.link([msg.value.author], msg.authorName) + ' / ' +
1163
          u.link([msg.key], msg.repoName) +
1164
          '<span class="right-bar">' +
1165
          u.timestamp(msg.value.timestamp, req) +
1166
          '</span></section>'
1167
      })
1168
    ),
1169
    u.readOnce(function (cb) {
1170
      cb(null, hasForks ? '' : req._t('NoForks'))
1171
    })
1172
  ]))
1173
}
1174
1175
R.serveRepoForkPrompt = function (req, repo) {
1176
  var title = req._t('Fork') + ' · %{author}/%{repo}'
1177
  return this.serveRepoTemplate(req, repo, null, null, title, pull.once(
1178
    '<form action="" method="post" onreset="history.back()">' +
1179
    '<h3>' + req._t('ForkRepoPrompt') + '</h3>' +
1180
    '<p>' + u.hiddenInputs({ id: repo.id }) +
1181
    '<button class="btn open" type="submit" name="action" value="fork">' +
1182
      req._t('Fork') +
1183
    '</button>' +
1184
    ' <button class="btn" type="reset">' +
1185
      req._t('Cancel') + '</button>' +
1186
    '</p></form>'
1187
  ))
1188
}
1189
1190
R.serveIssueOrPullRequest = function (req, repo, issue, path, id) {
1191
  return issue.msg.value.content.type == 'pull-request'
1192
    ? this.pulls.serveRepoPullReq(req, repo, issue, path, id)
1193
    : this.issues.serveRepoIssue(req, repo, issue, path, id)
1194
}
1195
1196
function getRepoLastMod(repo, cb) {
1197
  repo.getState(function (err, state) {
1198
    if (err) return cb(err)
1199
    var lastMod = new Date(Math.max.apply(Math, state.refs.map(function (ref) {
1200
      return ref.link.value.timestamp
1201
    }))) || new Date()
1202
    cb(null, lastMod)
1203
  })
1204
}
1205
1206
R.serveRepoRefs = function (req, repo) {
1207
  var self = this
1208
  return u.readNext(function (cb) {
1209
    getRepoLastMod(repo, function (err, lastMod) {
1210
      if (err) return cb(null, self.web.serveError(req, err, 500))
1211
      if (u.ifModifiedSince(req, lastMod)) {
1212
        return cb(null, pull.once([304]))
1213
      }
1214
      repo.getState(function (err, state) {
1215
        if (err) return cb(null, self.web.serveError(req, err, 500))
1216
        var buf = state.refs.sort(function (a, b) {
1217
          return a.name > b.name ? 1 : a.name < b.name ? -1 : 0
1218
        }).map(function (ref) {
1219
          return ref.hash + '\t' + ref.name + '\n'
1220
        }).join('')
1221
        cb(null, pull.values([[200, {
1222
          'Content-Type': 'text/plain; charset=utf-8',
1223
          'Content-Length': Buffer.byteLength(buf),
1224
          'Last-Modified': lastMod.toGMTString()
1225
        }], buf]))
1226
      })
1227
    })
1228
  })
1229
}
1230
1231
R.serveRepoObject = function (req, repo, sha1) {
1232
  var self = this
1233
  if (!/[0-9a-f]{20}/.test(sha1)) return pull.once([401])
1234
  return u.readNext(function (cb) {
1235
    repo.getObjectFromAny(sha1, function (err, obj) {
1236
      if (err) return cb(null, pull.once([404]))
1237
      cb(null, cat([
1238
        pull.once([200, {
1239
          'Content-Type': 'application/x-git-loose-object',
1240
          'Cache-Control': 'max-age=31536000'
1241
        }]),
1242
        pull(
1243
          cat([
1244
            pull.values([obj.type, ' ', obj.length.toString(10), '\0']),
1245
            obj.read
1246
          ]),
1247
          toPull(zlib.createDeflate())
1248
        )
1249
      ]))
1250
    })
1251
  })
1252
}
1253
1254
R.serveRepoHead = function (req, repo) {
1255
  var self = this
1256
  return u.readNext(function (cb) {
1257
    repo.getHead(function (err, name) {
1258
      if (err) return cb(null, pull.once([500]))
1259
      return cb(null, self.web.serveBuffer(200, 'ref: ' + name))
1260
    })
1261
  })
1262
}
1263
1264
R.serveRepoPacksInfo = function (req, repo) {
1265
  var self = this
1266
  return u.readNext(function (cb) {
1267
    getRepoLastMod(repo, function (err, lastMod) {
1268
      if (err) return cb(null, self.web.serveError(req, err, 500))
1269
      if (u.ifModifiedSince(req, lastMod)) {
1270
        return cb(null, pull.once([304]))
1271
      }
1272
      cb(null, cat([
1273
        pull.once([200, {
1274
          'Content-Type': 'text/plain; charset=utf-8',
1275
          'Last-Modified': lastMod.toGMTString()
1276
        }]),
1277
        pull(
1278
          repo.packs(),
1279
          pull.map(function (pack) {
1280
            var sha1 = pack.sha1
1281
            if (!sha1) {
1282
              // make up a sha1 and hope git doesn't notice
1283
              var packId = new Buffer(pack.packId.substr(1, 44), 'base64')
1284
              sha1 = packId.slice(0, 20).toString('hex')
1285
            }
1286
            return 'P pack-' + sha1 + '.pack\n'
1287
          })
1288
        )
1289
      ]))
1290
    })
1291
  })
1292
}
1293
1294
R.serveRepoPack = function (req, repo, name) {
1295
  var m = name.match(/^pack-(.*)\.(pack|idx)$/)
1296
  if (!m) return pull.once([400])
1297
  var hex;
1298
  try {
1299
    hex = new Buffer(m[1], 'hex')
1300
  } catch(e) {
1301
    return pull.once([400])
1302
  }
1303
1304
  var self = this
1305
  return u.readNext(function (cb) {
1306
    pull(
1307
      repo.packs(),
1308
      pull.filter(function (pack) {
1309
        var sha1 = pack.sha1
1310
          ? new Buffer(pack.sha1, 'hex')
1311
          : new Buffer(pack.packId.substr(1, 44), 'base64').slice(0, 20)
1312
        return sha1.equals(hex)
1313
      }),
1314
      pull.take(1),
1315
      pull.collect(function (err, packs) {
1316
        if (err) return console.error(err), cb(null, pull.once([500]))
1317
        if (packs.length < 1) return cb(null, pull.once([404]))
1318
          var pack = packs[0]
1319
1320
        if (m[2] === 'pack') {
1321
          repo.getPackfile(pack.packId, function (err, read) {
1322
            if (err) return cb(err)
1323
            cb(null, pull(read,
1324
              self.web.serveRaw(null, 'application/x-git-packed-objects')
1325
            ))
1326
          })
1327
        }
1328
1329
        if (m[2] === 'idx') {
1330
          repo.getPackIndex(pack.idxId, function (err, read) {
1331
            if (err) return cb(err)
1332
            cb(null, pull(read,
1333
              self.web.serveRaw(null, 'application/x-git-packed-objects-toc')
1334
            ))
1335
          })
1336
        }
1337
      })
1338
    )
1339
  })
1340
}
1341