protect agains pull requests on empty repositories

rhodecode/controllers/pullrequests.py

@@ -1,431 +1,439 b''
 # -*- coding: utf-8 -*-
 """
     rhodecode.controllers.pullrequests
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
     pull requests controller for rhodecode for initializing pull requests
 
     :created_on: May 7, 2012
     :author: marcink
     :copyright: (C) 2010-2012 Marcin Kuzminski <[e-mail]>
     :license: GPLv3, see COPYING for more details.
 """
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 import logging
 import traceback
 import formencode
 
 from webob.exc import HTTPNotFound, HTTPForbidden
 from collections import defaultdict
 from itertools import groupby
 
 from pylons import request, response, session, tmpl_context as c, url
 from pylons.controllers.util import abort, redirect
 from pylons.i18n.translation import _
 from pylons.decorators import jsonify
 
 from rhodecode.lib.compat import json
 from rhodecode.lib.base import BaseRepoController, render
 from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator,\
     NotAnonymous
 from rhodecode.lib import helpers as h
 from rhodecode.lib import diffs
 from rhodecode.lib.utils import action_logger
 from rhodecode.model.db import User, PullRequest, ChangesetStatus,\
     ChangesetComment
 from rhodecode.model.pull_request import PullRequestModel
 from rhodecode.model.meta import Session
 from rhodecode.model.repo import RepoModel
 from rhodecode.model.comment import ChangesetCommentsModel
 from rhodecode.model.changeset_status import ChangesetStatusModel
 from rhodecode.model.forms import PullRequestForm
+from rhodecode.lib.vcs.exceptions import EmptyRepositoryError
 
 log = logging.getLogger(__name__)
 
 
 class PullrequestsController(BaseRepoController):
 
     @LoginRequired()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def __before__(self):
         super(PullrequestsController, self).__before__()
         repo_model = RepoModel()
         c.users_array = repo_model.get_users_js()
         c.users_groups_array = repo_model.get_users_groups_js()
 
     def _get_repo_refs(self, repo):
         hist_l = []
 
         branches_group = ([('branch:%s:%s' % (k, v), k) for
                          k, v in repo.branches.iteritems()], _("Branches"))
         bookmarks_group = ([('book:%s:%s' % (k, v), k) for
                          k, v in repo.bookmarks.iteritems()], _("Bookmarks"))
         tags_group = ([('tag:%s:%s' % (k, v), k) for
                          k, v in repo.tags.iteritems()], _("Tags"))
 
         hist_l.append(bookmarks_group)
         hist_l.append(branches_group)
         hist_l.append(tags_group)
 
         return hist_l
 
     def _get_default_rev(self, repo):
         """
         Get's default revision to do compare on pull request
 
         :param repo:
         """
         repo = repo.scm_instance
         if 'default' in repo.branches:
             return 'default'
         else:
             #if repo doesn't have default branch return first found
             return repo.branches.keys()[0]
 
     def show_all(self, repo_name):
         c.pull_requests = PullRequestModel().get_all(repo_name)
         c.repo_name = repo_name
         return render('/pullrequests/pullrequest_show_all.html')
 
     @NotAnonymous()
     def index(self):
         org_repo = c.rhodecode_db_repo
 
         if org_repo.scm_instance.alias != 'hg':
             log.error('Review not available for GIT REPOS')
             raise HTTPNotFound
 
+        try:
+            org_repo.scm_instance.get_changeset()
+        except EmptyRepositoryError, e:
+            h.flash(h.literal(_('There are no changesets yet')),
+                    category='warning')
+            redirect(url('summary_home', repo_name=org_repo.repo_name))
+
         other_repos_info = {}
 
         c.org_refs = self._get_repo_refs(c.rhodecode_repo)
         c.org_repos = []
         c.other_repos = []
         c.org_repos.append((org_repo.repo_name, '%s/%s' % (
                                 org_repo.user.username, c.repo_name))
                            )
 
         # add org repo to other so we can open pull request agains itself
         c.other_repos.extend(c.org_repos)
 
         c.default_pull_request = org_repo.repo_name  # repo name pre-selected
         c.default_pull_request_rev = self._get_default_rev(org_repo)  # revision pre-selected
         c.default_revs = self._get_repo_refs(org_repo.scm_instance)
         #add orginal repo
         other_repos_info[org_repo.repo_name] = {
             'gravatar': h.gravatar_url(org_repo.user.email, 24),
             'description': org_repo.description,
             'revs': h.select('other_ref', '', c.default_revs, class_='refs')
         }
 
         #gather forks and add to this list
         for fork in org_repo.forks:
             c.other_repos.append((fork.repo_name, '%s/%s' % (
                                     fork.user.username, fork.repo_name))
                                  )
             other_repos_info[fork.repo_name] = {
                 'gravatar': h.gravatar_url(fork.user.email, 24),
                 'description': fork.description,
                 'revs': h.select('other_ref', '',
                                  self._get_repo_refs(fork.scm_instance),
                                  class_='refs')
             }
         #add parents of this fork also
         if org_repo.parent:
             c.default_pull_request = org_repo.parent.repo_name
             c.default_pull_request_rev = self._get_default_rev(org_repo.parent)
             c.default_revs = self._get_repo_refs(org_repo.parent.scm_instance)
             c.other_repos.append((org_repo.parent.repo_name, '%s/%s' % (
                                         org_repo.parent.user.username,
                                         org_repo.parent.repo_name))
                                      )
             other_repos_info[org_repo.parent.repo_name] = {
                 'gravatar': h.gravatar_url(org_repo.parent.user.email, 24),
                 'description': org_repo.parent.description,
                 'revs': h.select('other_ref', '',
                                  self._get_repo_refs(org_repo.parent.scm_instance),
                                  class_='refs')
             }
 
         c.other_repos_info = json.dumps(other_repos_info)
         c.review_members = [org_repo.user]
         return render('/pullrequests/pullrequest.html')
 
     @NotAnonymous()
     def create(self, repo_name):
         try:
             _form = PullRequestForm()().to_python(request.POST)
         except formencode.Invalid, errors:
             log.error(traceback.format_exc())
             if errors.error_dict.get('revisions'):
                 msg = 'Revisions: %s' % errors.error_dict['revisions']
             elif errors.error_dict.get('pullrequest_title'):
                 msg = _('Pull request requires a title with min. 3 chars')
             else:
                 msg = _('error during creation of pull request')
 
             h.flash(msg, 'error')
             return redirect(url('pullrequest_home', repo_name=repo_name))
 
         org_repo = _form['org_repo']
         org_ref = _form['org_ref']
         other_repo = _form['other_repo']
         other_ref = _form['other_ref']
         revisions = _form['revisions']
         reviewers = _form['review_members']
 
         title = _form['pullrequest_title']
         description = _form['pullrequest_desc']
 
         try:
             pull_request = PullRequestModel().create(
                 self.rhodecode_user.user_id, org_repo, org_ref, other_repo,
                 other_ref, revisions, reviewers, title, description
             )
             Session().commit()
             h.flash(_('Successfully opened new pull request'),
                     category='success')
         except Exception:
             h.flash(_('Error occurred during sending pull request'),
                     category='error')
             log.error(traceback.format_exc())
             return redirect(url('pullrequest_home', repo_name=repo_name))
 
         return redirect(url('pullrequest_show', repo_name=other_repo,
                             pull_request_id=pull_request.pull_request_id))
 
     @NotAnonymous()
     @jsonify
     def update(self, repo_name, pull_request_id):
         pull_request = PullRequest.get_or_404(pull_request_id)
         if pull_request.is_closed():
             raise HTTPForbidden()
         #only owner or admin can update it
         owner = pull_request.author.user_id == c.rhodecode_user.user_id
         if h.HasPermissionAny('hg.admin', 'repository.admin')() or owner:
             reviewers_ids = map(int, filter(lambda v: v not in [None, ''],
                        request.POST.get('reviewers_ids', '').split(',')))
 
             PullRequestModel().update_reviewers(pull_request_id, reviewers_ids)
             Session.commit()
             return True
         raise HTTPForbidden()
 
     @NotAnonymous()
     @jsonify
     def delete(self, repo_name, pull_request_id):
         pull_request = PullRequest.get_or_404(pull_request_id)
         #only owner can delete it !
         if pull_request.author.user_id == c.rhodecode_user.user_id:
             PullRequestModel().delete(pull_request)
             Session().commit()
             h.flash(_('Successfully deleted pull request'),
                     category='success')
             return redirect(url('admin_settings_my_account'))
         raise HTTPForbidden()
 
     def _load_compare_data(self, pull_request, enable_comments=True):
         """
         Load context data needed for generating compare diff
 
         :param pull_request:
         :type pull_request:
         """
 
         org_repo = pull_request.org_repo
         (org_ref_type,
          org_ref_name,
          org_ref_rev) = pull_request.org_ref.split(':')
 
         other_repo = pull_request.other_repo
         (other_ref_type,
          other_ref_name,
          other_ref_rev) = pull_request.other_ref.split(':')
 
         # despite opening revisions for bookmarks/branches/tags, we always
         # convert this to rev to prevent changes after book or branch change
         org_ref = ('rev', org_ref_rev)
         other_ref = ('rev', other_ref_rev)
 
         c.org_repo = org_repo
         c.other_repo = other_repo
 
         c.cs_ranges, discovery_data = PullRequestModel().get_compare_data(
                                        org_repo, org_ref, other_repo, other_ref
                                       )
 
         c.statuses = org_repo.statuses([x.raw_id for x in c.cs_ranges])
         # defines that we need hidden inputs with changesets
         c.as_form = request.GET.get('as_form', False)
 
         c.org_ref = org_ref[1]
         c.other_ref = other_ref[1]
         # diff needs to have swapped org with other to generate proper diff
         _diff = diffs.differ(other_repo, other_ref, org_repo, org_ref,
                              discovery_data)
         diff_processor = diffs.DiffProcessor(_diff, format='gitdiff')
         _parsed = diff_processor.prepare()
 
         c.files = []
         c.changes = {}
 
         for f in _parsed:
             fid = h.FID('', f['filename'])
             c.files.append([fid, f['operation'], f['filename'], f['stats']])
             diff = diff_processor.as_html(enable_comments=enable_comments,
                                           diff_lines=[f])
             c.changes[fid] = [f['operation'], f['filename'], diff]
 
     def show(self, repo_name, pull_request_id):
         repo_model = RepoModel()
         c.users_array = repo_model.get_users_js()
         c.users_groups_array = repo_model.get_users_groups_js()
         c.pull_request = PullRequest.get_or_404(pull_request_id)
         c.target_repo = c.pull_request.org_repo.repo_name
 
         cc_model = ChangesetCommentsModel()
         cs_model = ChangesetStatusModel()
         _cs_statuses = cs_model.get_statuses(c.pull_request.org_repo,
                                             pull_request=c.pull_request,
                                             with_revisions=True)
 
         cs_statuses = defaultdict(list)
         for st in _cs_statuses:
             cs_statuses[st.author.username] += [st]
 
         c.pull_request_reviewers = []
         c.pull_request_pending_reviewers = []
         for o in c.pull_request.reviewers:
             st = cs_statuses.get(o.user.username, None)
             if st:
                 sorter = lambda k: k.version
                 st = [(x, list(y)[0])
                       for x, y in (groupby(sorted(st, key=sorter), sorter))]
             else:
                 c.pull_request_pending_reviewers.append(o.user)
             c.pull_request_reviewers.append([o.user, st])
 
         # pull_requests repo_name we opened it against
         # ie. other_repo must match
         if repo_name != c.pull_request.other_repo.repo_name:
             raise HTTPNotFound
 
         # load compare data into template context
         enable_comments = not c.pull_request.is_closed()
         self._load_compare_data(c.pull_request, enable_comments=enable_comments)
 
         # inline comments
         c.inline_cnt = 0
         c.inline_comments = cc_model.get_inline_comments(
                                 c.rhodecode_db_repo.repo_id,
                                 pull_request=pull_request_id)
         # count inline comments
         for __, lines in c.inline_comments:
             for comments in lines.values():
                 c.inline_cnt += len(comments)
         # comments
         c.comments = cc_model.get_comments(c.rhodecode_db_repo.repo_id,
                                            pull_request=pull_request_id)
 
         try:
             cur_status = c.statuses[c.pull_request.revisions[0]][0]
         except:
             log.error(traceback.format_exc())
             cur_status = 'undefined'
         if c.pull_request.is_closed() and 0:
             c.current_changeset_status = cur_status
         else:
             # changeset(pull-request) status calulation based on reviewers
             c.current_changeset_status = cs_model.calculate_status(
                                             c.pull_request_reviewers,
                                          )
         c.changeset_statuses = ChangesetStatus.STATUSES
 
         return render('/pullrequests/pullrequest_show.html')
 
     @NotAnonymous()
     @jsonify
     def comment(self, repo_name, pull_request_id):
         pull_request = PullRequest.get_or_404(pull_request_id)
         if pull_request.is_closed():
             raise HTTPForbidden()
 
         status = request.POST.get('changeset_status')
         change_status = request.POST.get('change_changeset_status')
         text = request.POST.get('text')
         if status and change_status:
             text = text or (_('Status change -> %s')
                             % ChangesetStatus.get_status_lbl(status))
         comm = ChangesetCommentsModel().create(
             text=text,
             repo=c.rhodecode_db_repo.repo_id,
             user=c.rhodecode_user.user_id,
             pull_request=pull_request_id,
             f_path=request.POST.get('f_path'),
             line_no=request.POST.get('line'),
             status_change=(ChangesetStatus.get_status_lbl(status)
                            if status and change_status else None)
         )
 
         # get status if set !
         if status and change_status:
             ChangesetStatusModel().set_status(
                 c.rhodecode_db_repo.repo_id,
                 status,
                 c.rhodecode_user.user_id,
                 comm,
                 pull_request=pull_request_id
             )
         action_logger(self.rhodecode_user,
                       'user_commented_pull_request:%s' % pull_request_id,
                       c.rhodecode_db_repo, self.ip_addr, self.sa)
 
         if request.POST.get('save_close'):
             PullRequestModel().close_pull_request(pull_request_id)
             action_logger(self.rhodecode_user,
                       'user_closed_pull_request:%s' % pull_request_id,
                       c.rhodecode_db_repo, self.ip_addr, self.sa)
 
         Session().commit()
 
         if not request.environ.get('HTTP_X_PARTIAL_XHR'):
             return redirect(h.url('pullrequest_show', repo_name=repo_name,
                                   pull_request_id=pull_request_id))
 
         data = {
            'target_id': h.safeid(h.safe_unicode(request.POST.get('f_path'))),
         }
         if comm:
             c.co = comm
             data.update(comm.get_dict())
             data.update({'rendered_text':
                          render('changeset/changeset_comment_block.html')})
 
         return data
 
     @NotAnonymous()
     @jsonify
     def delete_comment(self, repo_name, comment_id):
         co = ChangesetComment.get(comment_id)
         if co.pull_request.is_closed():
             #don't allow deleting comments on closed pull request
             raise HTTPForbidden()
 
         owner = lambda: co.author.user_id == c.rhodecode_user.user_id
         if h.HasPermissionAny('hg.admin', 'repository.admin')() or owner:
             ChangesetCommentsModel().delete(comment=co)
             Session().commit()
             return True
         else:
             raise HTTPForbidden()