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 || repo.id,
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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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              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.backlinks ? self.web.ssb.backlinks.read({
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          query: [
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            {$filter: {
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              dest: root
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            }}
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          ]
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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 && (
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          (c.type === 'post' && c.root === root)
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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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  var id = u.msgIdToDomId(msg.key)
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  return h('section', {class: 'collapse', id: id}, [
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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) + '#' + id}, 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], filePath)
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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 digsPath = [repo.id, 'digs']
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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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      var isChannelRepo = /^#/.test(repo.id)
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      cb(null, self.web.serveTemplate(req, title)(cat([
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        h('div', {class: 'repo-title'}, isChannelRepo ? [
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          h('h2', {class: 'bgslash'},
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            (authorName ? u.link([repo.feed], authorName, false, 'class="repo-author"') + ' / ' : '') +
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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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          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, false, 'class="repo-author"') + ' / ' : '') +
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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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          !isChannelRepo && [[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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          !isChannelRepo && [[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),
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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',
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`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('/')} · ` : '') +
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    '%{author}/%{repo}' +
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    (repo.head == `refs/heads/${rev}` ? '' : `@${rev}`)
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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 targetpath = '/' + encodeURIComponent(repo.id)
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  var httpUrl = 'http://' + encodeURI(host) + targetpath
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  var cloneUrls = '<div class="clone-urls">' +
405
    '<select class="custom-dropdown clone-url-protocol" ' +
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     'onchange="with(this.nextSibling.firstChild) {' +
407
       '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>' +
410
    '</select>' +
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    '<div class="clone-url-wrapper">' +
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    '<input class="clone-url" readonly="readonly" ' +
413
      'value="ssb://' + repo.id + '" size="45" ' +
414
      'onclick="this.select()"/>' +
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    '<script>' +
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      'var httpOpt = document.querySelector(".http-clone-url")\n' +
417
      'if (location.protocol === "https:") httpOpt.text = "HTTPS"\n' +
418
      'httpOpt.value = location.origin + "' + targetpath + '"\n' +
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    '</script>' +
420
    '</div>' +
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    '</div>'
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423
  return this.serveRepoTemplate(req, repo, 'code', rev, title,
424
    u.readNext((cb) => {
425
      if (!rev) return cb(null, this.renderEmptyRepo(req, repo))
426
      repo.getLatestAvailableRev(rev, 10e3, (err, revGot, numSkipped) => {
427
        if (err) return cb(err)
428
        cb(null, cat([
429
          h('section', {class: 'branch-info light-grey', method: 'get'}, [
430
            h('form', {action: '', method: 'get'}, [
431
              h('div', {class: 'rev-menu-line'}, [
432
                h('span', `${req._t(type)}: `),
433
                this.revMenu(req, repo, rev)
434
              ]),
435
              cloneUrls
436
            ]),
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            u.when(numSkipped > 0, () =>
438
              h('div', {class: 'missing-blobs-warning mt2'},
439
                h('em', req._t('missingBlobsWarning', numSkipped))
440
              )
441
            )
442
          ]),
443
          h('section', {class: 'files'}, renderRepoTree(req, repo, revGot, path, type)),
444
          this.renderRepoReadme(req, repo, revGot, path)
445
        ]))
446
      })
447
    }))
448
}
449
450
/* Repo activity */
451
452
R.serveRepoActivity = function (req, repo, branch) {
453
  var self = this
454
  var title = req._t('Activity') + ' · %{author}/%{repo}'
455
  return self.serveRepoTemplate(req, repo, 'activity', branch, title, cat([
456
    h('h3', req._t('Activity')),
457
    pull(
458
      self.web.ssb.backlinks ? self.web.ssb.backlinks.read({
459
        query: [
460
          {$filter: {
461
            dest: repo.id,
462
            value: {
463
              content: {
464
                repo: repo.id
465
              }
466
            }
467
          }}
468
        ]
469
      }) : self.web.ssb.links({
470
        dest: repo.id,
471
        rel: 'repo',
472
        values: true
473
      }),
474
      pull.unique('key'),
475
      u.decryptMessages(self.web.ssb),
476
      u.sortMsgs(true),
477
      pull.asyncMap(renderRepoUpdate.bind(self, req, repo, false))
478
    ),
479
    u.readOnce(function (cb) {
480
      var done = multicb({ pluck: 1, spread: true })
481
      self.web.about.getName(repo.feed, done())
482
      self.web.getMsg(repo.id, done())
483
      done(function (err, authorName, msg) {
484
        if (err) return cb(err)
485
        self.web.renderFeedItem(req, {
486
          key: repo.id,
487
          value: msg.value,
488
          authorName: authorName
489
        }, cb)
490
      })
491
    })
492
  ]))
493
}
494
495
function renderRepoUpdate(req, repo, full, msg, cb) {
496
  var c = msg.value.content
497
498
  if (c.type != 'git-update') {
499
    return cb(null, '')
500
    // return renderFeedItem(msg, cb)
501
    // TODO: render post, issue, pull-request
502
  }
503
504
  var branches = []
505
  var tags = []
506
  if (c.refs) for (var name in c.refs) {
507
    var m = name.match(/^refs\/(heads|tags)\/(.*)$/) || [,, name]
508
    ;(m[1] == 'tags' ? tags : branches)
509
      .push({name: m[2], value: c.refs[name]})
510
  }
511
  var numObjects = c.objects ? Object.keys(c.objects).length : 0
512
513
  var dateStr = new Date(msg.value.timestamp).toLocaleString(req._locale)
514
515
  this.web.about.getName(msg.value.author, function (err, name) {
516
    if (err) return cb(err)
517
    cb(null, '<section class="collapse">' +
518
      u.link([msg.key], dateStr) + '<br>' +
519
      u.link([msg.value.author], name) + '<br>' +
520
521
      branches.map(function (update) {
522
        if (!update.value) {
523
          return '<s>' + u.escape(update.name) + '</s><br/>'
524
        } else {
525
          var commitLink = u.link([repo.id, 'commit', update.value])
526
          var branchLink = u.link([repo.id, 'tree', update.name])
527
          return branchLink + ' &rarr; <tt>' + commitLink + '</tt><br/>'
528
        }
529
      }).join('') +
530
      tags.map(function (update) {
531
        return update.value
532
          ? u.link([repo.id, 'tag', update.value], update.name)
533
          : '<s>' + u.escape(update.name) + '</s>'
534
      }).join(', ') +
535
      '</section>')
536
  })
537
}
538
539
/* Repo commits */
540
541
R.serveRepoCommits = function (req, repo, branch) {
542
  var query = req._u.query
543
  var title = req._t('Commits') + ' · %{author}/%{repo}'
544
  var head = query.start || branch
545
  return this.serveRepoTemplate(req, repo, 'commits', branch, title, cat([
546
    pull.once('<h3>' + req._t('Commits') + '</h3>'),
547
    head ? pull(
548
      repo.readLog(head),
549
      pull.take(20),
550
      paramap(repo.getCommitParsed.bind(repo), 8),
551
      paginate(
552
        !query.start ? '' : function (first, cb) {
553
          cb(null, '&hellip;')
554
        },
555
        pull.map(renderCommit.bind(this, req, repo)),
556
        function (commit, cb) {
557
          cb(null, commit.parents && commit.parents[0] ?
558
            '<a href="?start=' + commit.id + '">' +
559
              req._t('Older') + '</a>' : '')
560
        }
561
      )
562
    ) : pull.empty()
563
  ]))
564
}
565
566
function renderCommit(req, repo, commit) {
567
  var commitPath = [repo.id, 'commit', commit.id]
568
  var treePath = [repo.id, 'tree', commit.id]
569
  return '<section class="collapse">' +
570
    '<strong>' + u.link(commitPath, commit.title) + '</strong><br>' +
571
    '<tt>' + commit.id + '</tt> ' +
572
      u.link(treePath, req._t('Tree')) + '<br>' +
573
    u.escape(commit.author.name) + ' &middot; ' +
574
    commit.author.date.toLocaleString(req._locale) +
575
    (commit.separateAuthor ? '<br>' + req._t('CommittedOn', {
576
      name: u.escape(commit.committer.name),
577
      date: commit.committer.date.toLocaleString(req._locale)
578
    }) : '') +
579
    '</section>'
580
}
581
582
/* Branch menu */
583
584
R.formatRevOptions = function (currentName) {
585
  return function (name) {
586
    var htmlName = u.escape(name)
587
    return '<option value="' + htmlName + '"' +
588
      (name == currentName ? ' selected="selected"' : '') +
589
      '>' + htmlName + '</option>'
590
  }
591
}
592
593
R.formatRevType = function(req, type) {
594
  return (
595
    type == 'heads' ? req._t('Branches') :
596
    type == 'tags' ? req._t('Tags') :
597
    type == 'remotes' ? req._t('Remotes') :
598
    type)
599
}
600
601
R.revMenu = function (req, repo, currentName) {
602
  var self = this
603
  return u.readOnce(function (cb) {
604
    repo.getRefNames(function (err, refs) {
605
      if (err) return cb(err)
606
      cb(null, '<select class="custom-dropdown" name="rev" onchange="this.form.submit()">' +
607
        Object.keys(refs).map(function (group) {
608
          return '<optgroup ' +
609
            'label="' + self.formatRevType(req, group) + '">' +
610
            refs[group].map(self.formatRevOptions(currentName)).join('') +
611
            '</optgroup>'
612
        }).join('') +
613
        '</select><noscript> ' +
614
        '<input type="submit" value="' + req._t('Go') + '"/></noscript>')
615
    })
616
  })
617
}
618
619
/* Repo tree */
620
621
function renderRepoLatest(req, repo, rev) {
622
  if (!rev) return pull.empty()
623
  return u.readOnce(function (cb) {
624
    repo.getCommitParsed(rev, function (err, commit) {
625
      if (err) return cb(err)
626
      var commitPath = [repo.id, 'commit', commit.id]
627
      var actor = commit.separateAuthor ? 'author' : 'committer'
628
      var actionKey = actor.slice(0,1).toUpperCase() + actor.slice(1) + 'ReleasedCommit'
629
      cb(null,
630
        '<span>' +
631
          req._t(actionKey, {
632
            name: u.escape(commit[actor].name),
633
            commitName: u.link(commitPath, commit.title)
634
          }) +
635
        '</span>' +
636
        '<span class="float-right">' +
637
          req._t('LatestOn', {
638
            commitId: commit.id.slice(0, 7),
639
            date: commit[actor].date.toLocaleString(req._locale)
640
          }) +
641
        '</span>'
642
      )
643
    })
644
  })
645
}
646
647
// breadcrumbs
648
function linkPath(basePath, path) {
649
  path = path.slice()
650
  var last = path.pop()
651
  return path.map(function (dir, i) {
652
    return u.link(basePath.concat(path.slice(0, i+1)), dir)
653
  }).concat(last).join(' / ')
654
}
655
656
function renderRepoTree(req, repo, rev, path, type) {
657
  var source =  repo.readDir(rev,path)
658
  var pathLinks = path.length === 0 ? '' :
659
    ': ' + linkPath([repo.id, 'tree'], [rev].concat(path))
660
661
  var location = once('')
662
  if (path.length !== 0) {
663
    var link = linkPath([repo.id, 'tree'], [rev].concat(path))
664
    location = h('div', {class: 'fileLocation'}, `${req._t('Files')}: ${link}`)
665
  }
666
667
  return cat([
668
    location,
669
    h('table', {class: "files w-100", cellspacing: "0"}, cat([
670
      u.when(type === 'Branch', () =>
671
        h('thead', h('tr', h('td', {colspan: '2'}, [
672
          renderRepoLatest(req, repo, rev)
673
        ])))
674
      ),
675
      u.sourceMap(source, file =>
676
        h('tr', [
677
          h('td', [
678
            h('i', fileIcon(file))
679
          ]),
680
          h('td', u.link(filePath(file), file.name))
681
        ])
682
      )
683
    ]))
684
  ])
685
686
  function fileIcon(file) {
687
    return fileType(file) === 'tree' ? '📁' : '📄'
688
  }
689
690
  function filePath(file) {
691
    var type = fileType(file)
692
    return [repo.id, type, rev].concat(path, file.name)
693
  }
694
695
  function fileType(file) {
696
    if (file.mode === 040000) return 'tree'
697
    else if (file.mode === 0160000) return 'commit'
698
    else return 'blob'
699
  }
700
}
701
702
/* Repo readme */
703
704
R.renderRepoReadme = function (req, repo, branch, path) {
705
  var self = this
706
  return u.readNext(function (cb) {
707
    pull(
708
      repo.readDir(branch, path),
709
      pull.filter(function (file) {
710
        return /readme(\.|$)/i.test(file.name)
711
      }),
712
      pull.take(1),
713
      pull.collect(function (err, files) {
714
        if (err) return cb(null, pull.empty())
715
        var file = files[0]
716
        if (!file)
717
          return cb(null, pull.once(path.length ? '' :
718
            '<p>' + req._t('NoReadme') + '</p>'))
719
        repo.getObjectFromAny(file.id, function (err, obj) {
720
          if (err) return cb(err)
721
          cb(null, cat([
722
            pull.once('<section class="readme">' +
723
              '<div class="readme-filename">' + file.name + '</div>'),
724
            self.web.renderObjectData(obj, file.name, repo, branch, path),
725
            pull.once('</section>')
726
          ]))
727
        })
728
      })
729
    )
730
  })
731
}
732
733
/* Repo commit */
734
735
R.serveRepoCommit = function (req, repo, rev, filePath) {
736
  // TODO: use filePath argument
737
  var self = this
738
  return u.readNext(function (cb) {
739
    repo.getCommitParsed(rev, function (err, commit) {
740
      if (err) return cb(null,
741
        self.serveRepoTemplate(req, repo, null, rev, `%{author}/%{repo}@${rev}`,
742
          pull.once(self.web.renderError(err))))
743
      getObjectMsgId(repo, commit.id, function (err, objMsgId) {
744
        if (err) return cb(null,
745
          self.serveRepoTemplate(req, repo, null, rev, `%{author}/%{repo}@${rev}`,
746
            pull.once(self.web.renderError(err))))
747
        var commitPath = [repo.id, 'commit', commit.id]
748
        var treePath = [repo.id, 'tree', commit.id]
749
        var title = u.escape(commit.title) + ' · ' +
750
          '%{author}/%{repo}@' + commit.id.substr(0, 8)
751
        cb(null, self.serveRepoTemplate(req, repo, null, rev, title, cat([
752
          pull.once(
753
          '<h3>' + u.link(commitPath,
754
            req._t('CommitRev', {rev: rev})) + '</h3>' +
755
          '<section class="collapse">' +
756
          '<div class="right-bar">' +
757
            u.link(treePath, req._t('BrowseFiles')) +
758
          '</div>' +
759
          '<h4>' + u.linkify(u.escape(commit.title)) + '</h4>' +
760
          (commit.body ? u.linkify(u.pre(commit.body)) : '') +
761
          (commit.separateAuthor ? req._t('AuthoredOn', {
762
            name: u.escape(commit.author.name),
763
            date: commit.author.date.toLocaleString(req._locale)
764
          }) + '<br/>' : '') +
765
          req._t('CommittedOn', {
766
            name: u.escape(commit.committer.name),
767
            date: commit.committer.date.toLocaleString(req._locale)
768
          }) + '<br/>' +
769
          commit.parents.map(function (id) {
770
            return req._t('Parent') + ': ' +
771
              u.link([repo.id, 'commit', id], id)
772
          }).join('<br>') +
773
          '</section>' +
774
          '<section><h3>' + req._t('FilesChanged') + '</h3>'),
775
          // TODO: show diff from all parents (merge commits)
776
          self.renderDiffStat(req, [repo, repo], [commit.parents[0], commit.id], commit.id, objMsgId),
777
          pull.once('</section>')
778
        ])))
779
      })
780
    })
781
  })
782
}
783
784
/* Repo tag */
785
786
R.serveRepoTag = function (req, repo, rev, path) {
787
  var self = this
788
  return u.readNext(function (cb) {
789
    repo.getTagParsed(rev, function (err, tag) {
790
      if (err) {
791
        if (/Expected tag, got commit/.test(err.message)) {
792
          req._u.pathname = u.encodeLink([repo.id, 'commit', rev].concat(path))
793
          return cb(null, self.web.serveRedirect(req, url.format(req._u)))
794
        }
795
        return cb(null, self.web.serveError(req, err))
796
      }
797
798
      var title = req._t('TagName', {
799
        tag: u.escape(tag.tag)
800
      }) + ' · %{author}/%{repo}'
801
      var body = (tag.title + '\n\n' +
802
        tag.body.replace(/-----BEGIN PGP SIGNATURE-----\n[^.]*?\n-----END PGP SIGNATURE-----\s*$/, '')).trim()
803
      var date = tag.tagger.date
804
      cb(null, self.serveRepoTemplate(req, repo, 'tags', tag.object, title,
805
        pull.once(
806
          '<section class="collapse">' +
807
          '<h3>' + u.link([repo.id, 'tag', rev], tag.tag) + '</h3>' +
808
          req._t('TaggedOn', {
809
            name: u.escape(tag.tagger.name),
810
            date: date && date.toLocaleString(req._locale)
811
          }) + '<br/>' +
812
        u.link([repo.id, tag.type, tag.object]) +
813
        u.linkify(u.pre(body)) +
814
        '</section>')))
815
    })
816
  })
817
}
818
819
820
/* Diff stat */
821
822
R.renderDiffStat = function (req, repos, treeIds, commit, updateId) {
823
  var self = this
824
  if (treeIds.length == 0) treeIds = [null]
825
  var id = treeIds[0]
826
  var lastI = treeIds.length - 1
827
  var oldTree = treeIds[0]
828
  var changedFiles = []
829
  var source = GitRepo.diffTrees(repos, treeIds, true)
830
831
  return cat([
832
    h('table', u.sourceMap(source, item => {
833
      var filename = u.escape(item.filename = item.path.join('/'))
834
      var oldId = item.id && item.id[0]
835
      var newId = item.id && item.id[lastI]
836
      var oldMode = item.mode && item.mode[0]
837
      var newMode = item.mode && item.mode[lastI]
838
      var action =
839
        !oldId && newId ? req._t('action.added') :
840
        oldId && !newId ? req._t('action.deleted') :
841
        oldMode != newMode ? req._t('action.changedMode', {
842
          old: oldMode.toString(8),
843
          new: newMode.toString(8)
844
        }) : req._t('changed')
845
      if (item.id)
846
        changedFiles.push(item)
847
      var blobsPath = item.id[1]
848
        ? [repos[1].id, 'blob', treeIds[1]]
849
        : [repos[0].id, 'blob', treeIds[0]]
850
      var rawsPath = item.id[1]
851
        ? [repos[1].id, 'raw', treeIds[1]]
852
        : [repos[0].id, 'raw', treeIds[0]]
853
      item.blobPath = blobsPath.concat(item.path)
854
      item.rawPath = rawsPath.concat(item.path)
855
      var fileHref = item.id ?
856
        '#' + encodeURIComponent(item.path.join('/')) :
857
        u.encodeLink(item.blobPath)
858
859
      return h('tr', [
860
        h('td', [
861
          h('a', {href: fileHref}, filename)
862
        ]),
863
        h('td', action)
864
      ])
865
    })),
866
    pull(
867
      pull.values(changedFiles),
868
      paramap(function (item, cb) {
869
        var extension = u.getExtension(item.filename)
870
        if (extension in u.imgMimes) {
871
          var filename = u.escape(item.filename)
872
          return cb(null,
873
            '<pre><table class="code">' +
874
            '<tr><th id="' + u.escape(item.filename) + '">' +
875
              filename + '</th></tr>' +
876
            '<tr><td><img src="' + u.encodeLink(item.rawPath) + '"' +
877
            ' alt="' + filename + '"/></td></tr>' +
878
            '</table></pre>')
879
        }
880
        var done = multicb({ pluck: 1, spread: true })
881
        var mode0 = item.mode && item.mode[0]
882
        var modeI = item.mode && item.mode[lastI]
883
        var isSubmodule = (modeI == 0160000)
884
        var repo = repos[1]
885
        getRepoObjectString(repos[0], item.id[0], mode0, done())
886
        getRepoObjectString(repos[1], item.id[lastI], modeI, done())
887
        self.getLineCommentThreads(req, repo, updateId, commit, item.filename, done())
888
        done(function (err, strOld, strNew, lineCommentThreads) {
889
          if (err) return cb(err)
890
          cb(null, htmlLineDiff(req, repo, updateId, commit, item.filename, item.filename,
891
            strOld, strNew,
892
            u.encodeLink(item.blobPath), !isSubmodule, lineCommentThreads))
893
        })
894
      }, 4)
895
    )
896
  ])
897
}
898
899
function htmlLineDiff(req, repo, updateId, commit, filename, anchor, oldStr, newStr, blobHref,
900
    showViewLink, lineCommentThreads) {
901
  return '<div class="code-wrap"><table class="code">' +
902
    '<tr><th colspan=3 id="' + u.escape(anchor) + '">' + filename +
903
    (showViewLink === false ? '' :
904
      '<span class="right-bar">' +
905
        '<a href="' + blobHref + '">' + req._t('View') + '</a> ' +
906
      '</span>') +
907
    '</th></tr>' +
908
    (oldStr.length + newStr.length > 200000
909
      ? '<tr><td class="diff-info" colspan=3>' + req._t('diff.TooLarge') + '<br>' +
910
        req._t('diff.OldFileSize', {bytes: oldStr.length}) + '<br>' +
911
        req._t('diff.NewFileSize', {bytes: newStr.length}) + '</td></tr>'
912
      : tableDiff(req, repo, updateId, commit, oldStr, newStr, filename, lineCommentThreads)) +
913
    '</table></div>'
914
}
915
916
function tableDiff(req, repo, updateId, commit, oldStr, newStr, filename, lineCommentThreads) {
917
  var query = req._u.query
918
  var diff = JsDiff.structuredPatch('', '', oldStr, newStr)
919
  var groups = diff.hunks.map(function (hunk) {
920
    var oldLine = hunk.oldStart
921
    var newLine = hunk.newStart
922
    var header = '<tr class="diff-hunk-header"><td colspan=2></td><td>' +
923
      '@@ -' + oldLine + ',' + hunk.oldLines + ' ' +
924
      '+' + newLine + ',' + hunk.newLines + ' @@' +
925
      '</td></tr>'
926
    return [header].concat(hunk.lines.map(function (line) {
927
      var s = line[0]
928
      if (s == '\\') return
929
      var html = u.highlight(line, u.getExtension(filename))
930
      var trClass = s == '+' ? 'diff-new' : s == '-' ? 'diff-old' : ''
931
      var lineNums = [s == '+' ? '' : oldLine++, s == '-' ? '' : newLine++]
932
      var id = [filename].concat(lineNums).join('-')
933
      var newLineNum = lineNums[lineNums.length-1]
934
      return '<tr id="' + u.escape(id) + '" class="' + trClass + '">' +
935
        lineNums.map(function (num, i) {
936
          var idEnc = encodeURIComponent(id)
937
          return '<td class="code-linenum">' +
938
            (num ? '<a href="#' + idEnc + '">' +
939
              num + '</a>' +
940
              (updateId && i === lineNums.length-1 && s !== '-' ?
941
                // TODO: use a more descriptive icon for the comment action
942
                ' <a href="?comment=' + idEnc + '#' + idEnc + '">…</a>'
943
              : '')
944
            : '') + '</td>'
945
        }).join('') +
946
        '<td class="code-text">' + html + '</td></tr>' +
947
        (lineCommentThreads[newLineNum] ?
948
          '<tr><td colspan=4>' +
949
            lineCommentThreads[newLineNum] +
950
          '</td></tr>'
951
        : commit && query.comment === id ?
952
          '<tr><td colspan=4>' +
953
            forms.lineComment(req, repo, updateId, commit, filename, newLineNum) +
954
          '</td></tr>'
955
        : '')
956
    }))
957
  })
958
  return [].concat.apply([], groups).join('')
959
}
960
961
/* An unknown message linking to a repo */
962
963
R.serveRepoSomething = function (req, repo, id, msg, path) {
964
  return this.serveRepoTemplate(req, repo, null, null, null,
965
    pull.once('<section><h3>' + u.link([id]) + '</h3>' +
966
      u.json(msg) + '</section>'))
967
}
968
969
/* Repo update */
970
971
function objsArr(objs) {
972
  return Array.isArray(objs) ? objs :
973
    Object.keys(objs).map(function (sha1) {
974
      var obj = Object.create(objs[sha1])
975
      obj.sha1 = sha1
976
      return obj
977
    })
978
}
979
980
R.serveRepoUpdate = function (req, repo, msg, path) {
981
  var self = this
982
  var raw = req._u.query.raw != null
983
  var title = req._t('Update') + ' · %{author}/%{repo}'
984
  var c = msg.value.content
985
986
  if (raw)
987
    return self.serveRepoTemplate(req, repo, 'activity', null, title, pull.once(
988
      '<a href="?" class="raw-link header-align">' +
989
        req._t('Info') + '</a>' +
990
      '<h3>' + req._t('Update') + '</h3>' +
991
      '<section class="collapse">' +
992
        u.json(msg) + '</section>'))
993
994
995
  // convert packs to old single-object style
996
  var packs = Array.isArray(c.packs) && Array.isArray(c.indexes)
997
    && c.packs.map(function (pack, i) {
998
      var idx = c.indexes[i]
999
      return pack && pack.link && idx && idx.link && {
1000
        pack: pack,
1001
        idx: idx
1002
      }
1003
    }).filter(Boolean)
1004
1005
  var commits = cat([
1006
    c.objects ? pull(
1007
      pull.values(c.objects),
1008
      pull.filter(function (obj) { return obj.type == 'commit' }),
1009
      paramap(function (obj, cb) {
1010
        self.web.getBlob(req, obj.link || obj.key, function (err, readObject) {
1011
          if (err) return cb(err)
1012
          GitRepo.getCommitParsed({read: readObject}, cb)
1013
        })
1014
      }, 8)
1015
    ) : pull.empty(),
1016
    packs ? pull(
1017
      pull.values(packs),
1018
      paramap(function (pack, cb) {
1019
        var done = multicb({ pluck: 1, spread: true })
1020
        self.web.getBlob(req, pack.pack.link, done())
1021
        self.web.getBlob(req, pack.idx.link, done())
1022
        done(function (err, readPack, readIdx) {
1023
          if (err) return cb(self.web.renderError(err))
1024
          cb(null, gitPack.decodeWithIndex(repo, readPack, readIdx))
1025
        })
1026
      }, 4),
1027
      pull.flatten(),
1028
      pull.asyncMap(function (obj, cb) {
1029
        if (obj.type == 'commit')
1030
          GitRepo.getCommitParsed(obj, cb)
1031
        else
1032
          pull(obj.read, pull.drain(null, cb))
1033
      }),
1034
      pull.filter()
1035
    ) : pull.empty()
1036
  ])
1037
1038
  return self.serveRepoTemplate(req, repo, 'activity', null, title, cat([
1039
    pull.once('<a href="?raw" class="raw-link header-align">' +
1040
      req._t('Data') + '</a>' +
1041
      '<h3>' + req._t('Update') + '</h3>'),
1042
    pull(
1043
      pull.once(msg),
1044
      pull.asyncMap(renderRepoUpdate.bind(self, req, repo, true))
1045
    ),
1046
    (c.objects || c.packs) &&
1047
      pull.once('<h3>' + req._t('Commits') + '</h3>'),
1048
    pull(commits, pull.map(function (commit) {
1049
      return renderCommit(req, repo, commit)
1050
    }))
1051
  ]))
1052
}
1053
1054
/* Blob */
1055
1056
R.serveRepoBlob = function (req, repo, rev, path) {
1057
  var self = this
1058
  return u.readNext(function (cb) {
1059
    repo.getFile(rev, path, function (err, object) {
1060
      if (err) return cb(null, self.web.serveBlobNotFound(req, repo.id, err))
1061
      var type = repo.isCommitHash(rev) ? 'Tree' : 'Branch'
1062
      var pathLinks = path.length === 0 ? '' :
1063
        ': ' + linkPath([repo.id, 'tree'], [rev].concat(path))
1064
      var rawFilePath = [repo.id, 'raw', rev].concat(path)
1065
      var dirPath = path.slice(0, path.length-1)
1066
      var filename = path[path.length-1]
1067
      var extension = u.getExtension(filename)
1068
      var title = (path.length ? path.join('/') + ' · ' : '') +
1069
        '%{author}/%{repo}' +
1070
        (repo.head == 'refs/heads/' + rev ? '' : '@' + rev)
1071
      cb(null, self.serveRepoTemplate(req, repo, 'code', rev, title, cat([
1072
        pull.once('<section><form action="" method="get">' +
1073
          '<h3>' + req._t(type) + ': ' + rev + ' '),
1074
        self.revMenu(req, repo, rev),
1075
        pull.once('</h3></form>'),
1076
        type == 'Branch' && renderRepoLatest(req, repo, rev),
1077
        pull.once('</section><section class="collapse">' +
1078
          '<h3>' + req._t('Files') + pathLinks + '</h3>' +
1079
          '<div>' + object.length + ' bytes' +
1080
          '<span class="raw-link">' +
1081
            u.link(rawFilePath, req._t('Raw')) + '</span>' +
1082
          '</div></section>' +
1083
          '<section>'),
1084
        extension in u.imgMimes
1085
        ? pull.once('<img src="' + u.encodeLink(rawFilePath) +
1086
          '" alt="' + u.escape(filename) + '" />')
1087
        : self.web.renderObjectData(object, filename, repo, rev, dirPath),
1088
        pull.once('</section>')
1089
      ])))
1090
    })
1091
  })
1092
}
1093
1094
/* Raw blob */
1095
1096
R.serveRepoRaw = function (req, repo, branch, path) {
1097
  var self = this
1098
  return u.readNext(function (cb) {
1099
    repo.getFile(branch, path, function (err, object) {
1100
      if (err) return cb(null,
1101
        self.web.serveBuffer(404, req._t('error.BlobNotFound')))
1102
      var extension = u.getExtension(path[path.length-1])
1103
      var contentType = u.imgMimes[extension]
1104
      cb(null, pull(object.read, self.web.serveRaw(object.length, contentType)))
1105
    })
1106
  })
1107
}
1108
1109
/* Digs */
1110
1111
R.serveRepoDigs = function serveRepoDigs (req, repo) {
1112
  var self = this
1113
  return u.readNext(cb => {
1114
    var title = req._t('Digs') + ' · %{author}/%{repo}'
1115
    self.web.getVotes(repo.id, (err, votes) => {
1116
      cb(null, self.serveRepoTemplate(req, repo, null, null, title,
1117
        h('section', [
1118
          h('h3', req._t('Digs')),
1119
          h('div', `${req._t('Total')}: ${votes.upvotes}`),
1120
          h('ul', u.paraSourceMap(Object.keys(votes.upvoters), (feedId, cb) => {
1121
            self.web.about.getName(feedId, (err, name) => {
1122
              cb(null, h('li', u.link([feedId], name)))
1123
            })
1124
          }))
1125
        ])
1126
      ))
1127
    })
1128
  })
1129
}
1130
1131
/* Forks */
1132
1133
R.getForks = function (repo, includeSelf) {
1134
  var self = this
1135
  return pull(
1136
    cat([
1137
      includeSelf && pull.once(repo.id),
1138
      // get downstream repos
1139
      pull(
1140
        self.web.ssb.backlinks ? self.web.ssb.backlinks.read({
1141
          query: [
1142
            {$filter: {
1143
              dest: repo.id,
1144
              value: {
1145
                content: {
1146
                  type: 'git-repo',
1147
                  upstream: repo.id,
1148
                }
1149
              }
1150
            }},
1151
            {$map: 'key'}
1152
          ]
1153
        }) : pull(
1154
          self.web.ssb.links({
1155
            dest: repo.id,
1156
            rel: 'upstream'
1157
          }),
1158
          pull.map('key')
1159
        )
1160
      ),
1161
      // look for other repos that previously had pull requests to this one
1162
      pull(
1163
        self.web.ssb.backlinks ? self.web.ssb.backlinks.read({
1164
          query: [
1165
            {$filter: {
1166
              dest: repo.id,
1167
              value: {
1168
                content: {
1169
                  type: 'pull-request',
1170
                  project: repo.id,
1171
                }
1172
              }
1173
            }}
1174
          ]
1175
        }) : pull(
1176
          self.web.ssb.links({
1177
            dest: repo.id,
1178
            values: true,
1179
            rel: 'project'
1180
          }),
1181
          u.decryptMessages(self.web.ssb),
1182
          pull.filter(function (msg) {
1183
            var c = msg && msg.value && msg.value.content
1184
            return c && c.type == 'pull-request'
1185
          })
1186
        ),
1187
        pull.map(function (msg) { return msg.value.content.head_repo })
1188
      )
1189
    ]),
1190
    pull.unique(),
1191
    paramap(function (key, cb) {
1192
      if (key && key[0] === '#') return cb(null, {key: key, value: {
1193
        content: {
1194
          type: 'git-repo',
1195
        }
1196
      }})
1197
      self.web.getMsg(key, cb)
1198
    }, 4),
1199
    u.decryptMessages(self.web.ssb),
1200
    pull.filter(function (msg) {
1201
      var c = msg && msg.value && msg.value.content
1202
      return c && c.type == 'git-repo'
1203
    }),
1204
    paramap(function (msg, cb) {
1205
      self.web.getRepoFullName(msg.value.author, msg.key,
1206
          function (err, repoName, authorName) {
1207
        if (err) return cb(err)
1208
        cb(null, {
1209
          key: msg.key,
1210
          value: msg.value,
1211
          repoName: repoName,
1212
          authorName: authorName
1213
        })
1214
      })
1215
    }, 8)
1216
  )
1217
}
1218
1219
R.serveRepoForks = function (req, repo) {
1220
  var hasForks
1221
  var title = req._t('Forks') + ' · %{author}/%{repo}'
1222
  return this.serveRepoTemplate(req, repo, null, null, title, cat([
1223
    pull.once('<h3>' + req._t('Forks') + '</h3>'),
1224
    pull(
1225
      this.getForks(repo),
1226
      pull.map(function (msg) {
1227
        hasForks = true
1228
        return '<section class="collapse">' +
1229
          u.link([msg.value.author], msg.authorName) + ' / ' +
1230
          u.link([msg.key], msg.repoName) +
1231
          '<span class="right-bar">' +
1232
          u.timestamp(msg.value.timestamp, req) +
1233
          '</span></section>'
1234
      })
1235
    ),
1236
    u.readOnce(function (cb) {
1237
      cb(null, hasForks ? '' : req._t('NoForks'))
1238
    })
1239
  ]))
1240
}
1241
1242
R.serveRepoForkPrompt = function (req, repo) {
1243
  var title = req._t('Fork') + ' · %{author}/%{repo}'
1244
  return this.serveRepoTemplate(req, repo, null, null, title, pull.once(
1245
    '<form action="" method="post" onreset="history.back()">' +
1246
    '<h3>' + req._t('ForkRepoPrompt') + '</h3>' +
1247
    '<p>' + u.hiddenInputs({ id: repo.id }) +
1248
    '<button class="btn open" type="submit" name="action" value="fork">' +
1249
      req._t('Fork') +
1250
    '</button>' +
1251
    ' <button class="btn" type="reset">' +
1252
      req._t('Cancel') + '</button>' +
1253
    '</p></form>'
1254
  ))
1255
}
1256
1257
R.serveIssueOrPullRequest = function (req, repo, issue, path, id) {
1258
  return issue.msg.value.content.type == 'pull-request'
1259
    ? this.pulls.serveRepoPullReq(req, repo, issue, path, id)
1260
    : this.issues.serveRepoIssue(req, repo, issue, path, id)
1261
}
1262
1263
function getRepoLastMod(repo, cb) {
1264
  repo.getState(function (err, state) {
1265
    if (err) return cb(err)
1266
    var lastMod = new Date(Math.max.apply(Math, state.refs.map(function (ref) {
1267
      return ref.link.value.timestamp
1268
    }))) || new Date()
1269
    cb(null, lastMod)
1270
  })
1271
}
1272
1273
R.serveRepoRefs = function (req, repo) {
1274
  var self = this
1275
  return u.readNext(function (cb) {
1276
    getRepoLastMod(repo, function (err, lastMod) {
1277
      if (err) return cb(null, self.web.serveError(req, err, 500))
1278
      if (u.ifModifiedSince(req, lastMod)) {
1279
        return cb(null, pull.once([304]))
1280
      }
1281
      repo.getState(function (err, state) {
1282
        if (err) return cb(null, self.web.serveError(req, err, 500))
1283
        var buf = state.refs.sort(function (a, b) {
1284
          return a.name > b.name ? 1 : a.name < b.name ? -1 : 0
1285
        }).map(function (ref) {
1286
          return ref.hash + '\t' + ref.name + '\n'
1287
        }).join('')
1288
        cb(null, pull.values([[200, {
1289
          'Content-Type': 'text/plain; charset=utf-8',
1290
          'Content-Length': Buffer.byteLength(buf),
1291
          'Last-Modified': lastMod.toGMTString()
1292
        }], buf]))
1293
      })
1294
    })
1295
  })
1296
}
1297
1298
R.serveRepoObject = function (req, repo, sha1) {
1299
  var self = this
1300
  if (!/[0-9a-f]{20}/.test(sha1)) return pull.once([401])
1301
  return u.readNext(function (cb) {
1302
    repo.getObjectFromAny(sha1, function (err, obj) {
1303
      if (err) return cb(null, pull.once([404]))
1304
      cb(null, cat([
1305
        pull.once([200, {
1306
          'Content-Type': 'application/x-git-loose-object',
1307
          'Cache-Control': 'max-age=31536000'
1308
        }]),
1309
        pull(
1310
          cat([
1311
            pull.values([obj.type, ' ', obj.length.toString(10), '\0']),
1312
            obj.read
1313
          ]),
1314
          toPull(zlib.createDeflate())
1315
        )
1316
      ]))
1317
    })
1318
  })
1319
}
1320
1321
R.serveRepoHead = function (req, repo) {
1322
  var self = this
1323
  return u.readNext(function (cb) {
1324
    repo.getHead(function (err, name) {
1325
      if (err) return cb(null, pull.once([500]))
1326
      return cb(null, self.web.serveBuffer(200, 'ref: ' + name))
1327
    })
1328
  })
1329
}
1330
1331
R.serveRepoPacksInfo = function (req, repo) {
1332
  var self = this
1333
  return u.readNext(function (cb) {
1334
    getRepoLastMod(repo, function (err, lastMod) {
1335
      if (err) return cb(null, self.web.serveError(req, err, 500))
1336
      if (u.ifModifiedSince(req, lastMod)) {
1337
        return cb(null, pull.once([304]))
1338
      }
1339
      cb(null, cat([
1340
        pull.once([200, {
1341
          'Content-Type': 'text/plain; charset=utf-8',
1342
          'Last-Modified': lastMod.toGMTString()
1343
        }]),
1344
        pull(
1345
          repo.packs(),
1346
          pull.map(function (pack) {
1347
            var sha1 = pack.sha1
1348
            if (!sha1) {
1349
              // make up a sha1 and hope git doesn't notice
1350
              var packId = Buffer.from(pack.packId.substr(1, 44), 'base64')
1351
              sha1 = packId.slice(0, 20).toString('hex')
1352
            }
1353
            return 'P pack-' + sha1 + '.pack\n'
1354
          })
1355
        )
1356
      ]))
1357
    })
1358
  })
1359
}
1360
1361
R.serveRepoPack = function (req, repo, name) {
1362
  var m = name.match(/^pack-(.*)\.(pack|idx)$/)
1363
  if (!m) return pull.once([400])
1364
  var hex;
1365
  try {
1366
    hex = Buffer.from(m[1], 'hex')
1367
  } catch(e) {
1368
    return pull.once([400])
1369
  }
1370
1371
  var self = this
1372
  return u.readNext(function (cb) {
1373
    pull(
1374
      repo.packs(),
1375
      pull.filter(function (pack) {
1376
        var sha1 = pack.sha1
1377
          ? Buffer.from(pack.sha1, 'hex')
1378
          : Buffer.from(pack.packId.substr(1, 44), 'base64').slice(0, 20)
1379
        return sha1.equals(hex)
1380
      }),
1381
      pull.take(1),
1382
      pull.collect(function (err, packs) {
1383
        if (err) return console.error(err), cb(null, pull.once([500]))
1384
        if (packs.length < 1) return cb(null, pull.once([404]))
1385
          var pack = packs[0]
1386
1387
        if (m[2] === 'pack') {
1388
          repo.getPackfile(pack.packId, function (err, read) {
1389
            if (err) return cb(err)
1390
            cb(null, pull(read,
1391
              self.web.serveRaw(null, 'application/x-git-packed-objects')
1392
            ))
1393
          })
1394
        }
1395
1396
        if (m[2] === 'idx') {
1397
          repo.getPackIndex(pack.idxId, function (err, read) {
1398
            if (err) return cb(err)
1399
            cb(null, pull(read,
1400
              self.web.serveRaw(null, 'application/x-git-packed-objects-toc')
1401
            ))
1402
          })
1403
        }
1404
      })
1405
    )
1406
  })
1407
}
1408