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annotate src/server/blog.py @ 728:9d35d75566fb

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server_side (blog): clean error message when unknown profile is requested
author souliane <souliane@mailoo.org>
date Tue, 06 Oct 2015 16:38:41 +0200
parents 3bd097380da7
children 916075bd0356
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # Libervia: a Salut à Toi frontend
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5 # Copyright (C) 2011, 2012, 2013, 2014, 2015 Jérôme Poisson <goffi@goffi.org>
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6 # Copyright (C) 2013, 2014, 2015 Adrien Cossa <souliane@mailoo.org>
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8 # This program is free software: you can redistribute it and/or modify
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9 # it under the terms of the GNU Affero General Public License as published by
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10 # the Free Software Foundation, either version 3 of the License, or
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11 # (at your option) any later version.
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13 # This program is distributed in the hope that it will be useful,
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14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 # GNU Affero General Public License for more details.
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18 # You should have received a copy of the GNU Affero General Public License
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19 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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21 from sat.core.i18n import _, D_
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22 from sat_frontends.tools.strings import addURLToText
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23 from sat.core.log import getLogger
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24 log = getLogger(__name__)
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26 from dbus.exceptions import DBusException
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27 from twisted.internet import defer
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28 from twisted.web import server
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29 from twisted.web.resource import Resource
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30 from twisted.words.protocols.jabber.jid import JID
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31 from jinja2 import Environment, PackageLoader
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32 from datetime import datetime
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33 from sys import path
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34 import uuid
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35 import re
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36 import os
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38 from libervia.server.html_tools import sanitizeHtml, convertNewLinesToXHTML
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39 from libervia.server.constants import Const as C
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42 NS_MICROBLOG = 'urn:xmpp:microblog:0'
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43
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44
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45 class TemplateProcessor(object):
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46
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47 THEME = 'default'
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48
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49 def __init__(self, host):
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50 self.host = host
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51
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52 # add Libervia's themes directory to the python path
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53 path.append(os.path.dirname(os.path.normpath(self.host.themes_dir)))
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54 themes = os.path.basename(os.path.normpath(self.host.themes_dir))
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55 self.env = Environment(loader=PackageLoader(themes, self.THEME))
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56
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57 def useTemplate(self, request, tpl, data=None):
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58 root_url = '../' * len(request.postpath)
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59 theme_url = os.path.join(root_url, 'themes', self.THEME)
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61 data_ = {'images': os.path.join(theme_url, 'images'),
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62 'styles': os.path.join(theme_url, 'styles'),
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63 }
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64 if data:
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65 data_.update(data)
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67 template = self.env.get_template('%s.html' % tpl)
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68 return template.render(**data_).encode('utf-8')
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71 class MicroBlog(Resource, TemplateProcessor):
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72 isLeaf = True
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74 def __init__(self, host):
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75 self.host = host
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76 Resource.__init__(self)
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77 TemplateProcessor.__init__(self, host)
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78 self.host.bridge.register('entityDataUpdated', self.entityDataUpdatedHandler)
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79 self.avatars_cache = {}
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80 self.waiting_deferreds = {}
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81
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82 def entityDataUpdatedHandler(self, entity_s, key, value, dummy):
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83 """Retrieve the avatar we've been waiting for and fires the callback.
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84
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85 @param entity_s (str): JID of the contact
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86 @param key (str): entity data key
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87 @param value (str): entity data value
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88 @param dummy (str): that would be C.SERVICE_PROFILE
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89 """
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90 if key != "avatar":
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91 return
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92 log.debug(_(u"Received a new avatar for entity %s") % entity_s)
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93
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94 url = os.path.join(C.AVATARS_DIR, value)
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95 self.avatars_cache[entity_s] = url
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96 self.waiting_deferreds[entity_s].callback(url)
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97 del self.waiting_deferreds[entity_s]
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98
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99 def getAvatarURL(self, pub_jid):
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100 """Return avatar of a jid if in cache, else ask for it.
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101
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102 @param pub_jid (JID): publisher JID
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103 @return: deferred avatar URL (unicode)
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104 """
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105 bare_jid_s = pub_jid.userhost()
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106 try:
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107 url = self.avatars_cache[bare_jid_s]
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108 except KeyError:
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109 self.avatars_cache[bare_jid_s] = '' # avoid to request the vcard several times
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110 self.host.bridge.getCard(bare_jid_s, C.SERVICE_PROFILE)
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111 d = defer.Deferred()
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112 self.waiting_deferreds[bare_jid_s] = d
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113 return d
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114 return defer.succeed(url if url else C.DEFAULT_AVATAR_URL)
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115
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116 def render_GET(self, request):
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117 if not request.postpath:
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118 return self.useTemplate(request, "static_blog_error", {'message': "You must indicate a nickname"})
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119
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120 prof_requested = request.postpath[0]
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121 #TODO : char check: only use alphanumeric chars + some extra(_,-,...) here
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122 try:
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123 prof_found = self.host.bridge.getProfileName(prof_requested)
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124 except DBusException:
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125 prof_found = None
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126 if not prof_found or prof_found == C.SERVICE_PROFILE:
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127 return self.useTemplate(request, "static_blog_error", {'message': "Invalid nickname"})
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128
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129 d = defer.Deferred()
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130 JID(self.host.bridge.asyncGetParamA('JabberID', 'Connection', 'value', C.SERVER_SECURITY_LIMIT, prof_found, callback=d.callback, errback=d.errback))
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131 d.addCallbacks(lambda pub_jid_s: self.gotJID(pub_jid_s, request, prof_found))
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132 return server.NOT_DONE_YET
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133
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134 def gotJID(self, pub_jid_s, request, profile):
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135 pub_jid = JID(pub_jid_s)
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diff changeset
136
708
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diff changeset
137 self.parseURLParams(request)
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diff changeset
138 if request.item_id:
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139 item_ids = [request.item_id]
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140 max_items = 1
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diff changeset
141 else:
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diff changeset
142 item_ids = []
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143 max_items = int(request.extra_dict['rsm_max'])
586
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diff changeset
144
708
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souliane <souliane@mailoo.org>
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diff changeset
145 if request.atom:
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146 self.host.bridge.mbGetAtom(pub_jid.userhost(), NS_MICROBLOG, max_items, item_ids,
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147 request.extra_dict, C.SERVICE_PROFILE,
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148 lambda feed: self.render_atom_feed(feed, request),
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diff changeset
149 lambda failure: self.render_error_blog(failure, request, pub_jid))
725
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diff changeset
150 elif request.item_id:
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diff changeset
151 self.getItemById(pub_jid, request.item_id, request.extra_dict,
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diff changeset
152 request.extra_comments_dict, request, profile)
704
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diff changeset
153 else:
725
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154 self.getItems(pub_jid, max_items, request.extra_dict,
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diff changeset
155 request.extra_comments_dict, request, profile)
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diff changeset
156
708
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diff changeset
157 def parseURLParams(self, request):
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158 """Parse the request URL parameters.
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159
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diff changeset
160 @param request: HTTP request
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161 """
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diff changeset
162 request.item_id = None
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diff changeset
163 request.atom = False
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diff changeset
164
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165 if len(request.postpath) > 1:
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diff changeset
166 if request.postpath[1] == 'atom.xml': # return the atom feed
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167 request.atom = True
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168 else:
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169 try: # check if the given path is a valid UUID
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diff changeset
170 uuid.UUID(request.postpath[1])
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171 request.item_id = request.postpath[1]
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diff changeset
172 except ValueError:
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173 pass
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parents: 705
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174
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diff changeset
175 self.parseURLParamsRSM(request)
725
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176 request.display_single = (request.item_id is not None) or int(request.extra_dict['rsm_max']) == 1
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diff changeset
177 self.parseURLParamsCommentsRSM(request)
708
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diff changeset
178
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diff changeset
179 def parseURLParamsRSM(self, request):
725
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180 """Parse RSM request data from the URL parameters for main items
708
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diff changeset
181
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diff changeset
182 @param request: HTTP request
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183 """
725
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184 request.extra_dict = {}
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diff changeset
185 if request.item_id: # XXX: item_id and RSM are not compatible
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186 return
704
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parents: 702
diff changeset
187 try:
725
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188 request.extra_dict['rsm_max'] = request.args['max'][0]
704
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diff changeset
189 except (ValueError, KeyError):
725
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190 request.extra_dict['rsm_max'] = unicode(C.RSM_MAX_ITEMS)
704
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parents: 702
diff changeset
191 try:
725
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diff changeset
192 request.extra_dict['rsm_index'] = request.args['index'][0]
704
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parents: 702
diff changeset
193 except (ValueError, KeyError):
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diff changeset
194 try:
725
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diff changeset
195 request.extra_dict['rsm_before'] = request.args['before'][0]
704
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parents: 702
diff changeset
196 except KeyError:
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parents: 702
diff changeset
197 try:
725
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diff changeset
198 request.extra_dict['rsm_after'] = request.args['after'][0]
704
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parents: 702
diff changeset
199 except KeyError:
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parents: 702
diff changeset
200 pass
725
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parents: 717
diff changeset
201
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diff changeset
202 def parseURLParamsCommentsRSM(self, request):
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203 """Parse RSM request data from the URL parameters for comments
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diff changeset
204
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diff changeset
205 @param request: HTTP request
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206 """
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diff changeset
207 request.extra_comments_dict = {}
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diff changeset
208 if request.display_single:
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diff changeset
209 try:
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diff changeset
210 request.extra_comments_dict['rsm_max'] = request.args['comments_max'][0]
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diff changeset
211 except (ValueError, KeyError):
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diff changeset
212 request.extra_comments_dict['rsm_max'] = unicode(C.RSM_MAX_COMMENTS)
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diff changeset
213 else:
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diff changeset
214 request.extra_comments_dict['rsm_max'] = "0"
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parents: 717
diff changeset
215
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diff changeset
216 def getItemById(self, pub_jid, item_id, extra_dict, extra_comments_dict, request, profile):
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diff changeset
217 """
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diff changeset
218
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diff changeset
219 @param pub_jid (jid.JID): publisher JID
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diff changeset
220 @param item_id(unicode): ID of the item to retrieve
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diff changeset
221 @param extra_dict (dict): extra configuration for initial items only
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diff changeset
222 @param extra_comments_dict (dict): extra configuration for comments only
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diff changeset
223 @param request: HTTP request
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diff changeset
224 @param profile
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225 """
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226
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227 def gotItems(items):
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diff changeset
228 items, metadata = items
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229 item = items[0] # assume there's only one item
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diff changeset
230
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diff changeset
231 def gotCount(items_bis):
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diff changeset
232 metadata_bis = items_bis[1]
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diff changeset
233 metadata['rsm_count'] = metadata_bis['rsm_count']
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diff changeset
234 index_key = "rsm_index" if metadata_bis.get("rsm_index") else "rsm_count"
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diff changeset
235 metadata['rsm_index'] = unicode(int(metadata_bis[index_key]) - 1)
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diff changeset
236 metadata['rsm_first'] = metadata['rsm_last'] = item["id"]
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diff changeset
237
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diff changeset
238 def gotComments(comments):
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diff changeset
239 # build the items as self.getItems would do it (and as self.render_html_blog expects them to be)
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240 comments = [(item['comments_service'], item['comments_node'], "", comments[0], comments[1])]
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diff changeset
241 self.render_html_blog([(item, comments)], metadata, request, pub_jid, profile)
10
c28a4840e1a8 server: microblog resource
Goffi <goffi@goffi.org>
parents:
diff changeset
242
725
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diff changeset
243 # get the comments
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diff changeset
244 max_comments = int(extra_comments_dict['rsm_max'])
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diff changeset
245 self.host.bridge.mbGet(item['comments_service'], item['comments_node'], max_comments, [],
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diff changeset
246 extra_comments_dict, C.SERVICE_PROFILE, callback=gotComments)
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diff changeset
247
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diff changeset
248 # XXX: retrieve RSM information related to the main item. We can't do it while
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diff changeset
249 # retrieving the item, because item_ids and rsm should not be used together.
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diff changeset
250 self.host.bridge.mbGet(pub_jid.userhost(), NS_MICROBLOG, 1, [],
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diff changeset
251 {"rsm_max": "1", "rsm_after": item["id"]}, C.SERVICE_PROFILE, callback=gotCount)
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diff changeset
252
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diff changeset
253 # get the main item
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diff changeset
254 self.host.bridge.mbGet(pub_jid.userhost(), NS_MICROBLOG, 1, [item_id],
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diff changeset
255 extra_dict, C.SERVICE_PROFILE, callback=gotItems)
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parents: 717
diff changeset
256
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diff changeset
257 def getItems(self, pub_jid, max_items, extra_dict, extra_comments_dict, request, profile):
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diff changeset
258 """
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diff changeset
259
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diff changeset
260 @param pub_jid (jid.JID): publisher JID
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261 @param max_items(int): maximum number of item to get, C.NO_LIMIT for no limit
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262 @param extra_dict (dict): extra configuration for initial items only
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263 @param extra_comments_dict (dict): extra configuration for comments only
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264 @param request: HTTP request
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265 @param profile
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266 """
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267 def getResultCb(data, rt_session):
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268 remaining, results = data
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269 for result in results:
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270 service, node, failure, items, metadata = result
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271 if not failure:
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272 self.render_html_blog(items, metadata, request, pub_jid, profile)
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273
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274 if remaining:
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275 self._getResults(rt_session)
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276
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277 def getResult(rt_session):
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278 self.host.bridge.mbGetFromManyWithCommentsRTResult(rt_session, C.SERVICE_PROFILE,
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279 callback=lambda data: getResultCb(data, rt_session),
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280 errback=lambda failure: self.render_error_blog(failure, request, pub_jid))
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281
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282 max_comments = int(extra_comments_dict['rsm_max'])
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283 self.host.bridge.mbGetFromManyWithComments(C.JID, [pub_jid.userhost()], max_items,
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284 max_comments, extra_dict, extra_comments_dict,
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285 C.SERVICE_PROFILE, callback=getResult)
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286
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287 def render_html_blog(self, items, metadata, request, pub_jid, profile):
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288 """Retrieve the user parameters before actually rendering the static blog
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289
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290 @param items(list[tuple(dict, list)]): same as in self.__render_html_blog
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291 @param metadata(dict): original node metadata
389
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292 @param request: HTTP request
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293 @param pub_jid (JID): publisher JID
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294 @param profile (unicode): %(doc_profile)s
389
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295 """
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296 d_list = []
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297 options = {}
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298
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299 def getCallback(param_name):
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300 d = defer.Deferred()
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301 d.addCallback(lambda value: options.update({param_name: value}))
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302 d_list.append(d)
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303 return d.callback
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304
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305 eb = lambda failure: self.render_error_blog(failure, request, pub_jid)
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306
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307 self.getAvatarURL(pub_jid).addCallbacks(getCallback('avatar'), eb)
441
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308 for param_name in (C.STATIC_BLOG_PARAM_TITLE, C.STATIC_BLOG_PARAM_BANNER, C.STATIC_BLOG_PARAM_KEYWORDS, C.STATIC_BLOG_PARAM_DESCRIPTION):
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309 self.host.bridge.asyncGetParamA(param_name, C.STATIC_BLOG_KEY, 'value', C.SERVER_SECURITY_LIMIT, profile, callback=getCallback(param_name), errback=eb)
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310
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311 cb = lambda dummy: self.__render_html_blog(items, metadata, options, request, pub_jid)
441
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312 defer.DeferredList(d_list).addCallback(cb)
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313
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314 def __render_html_blog(self, items, metadata, options, request, pub_jid):
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315 """Actually render the static blog.
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316
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317 If mblog_data is a list of dict, we are missing the comments items so we just
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318 display the main items. If mblog_data is a list of couple, each couple is
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diff changeset
319 associating a main item data with the list of its comments, so we render all.
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320
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321 @param items(list[tuple(dict, list)]): list of 2-tuple with
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322 - item(dict): item microblog data
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323 - comments_list(list[tuple]): list of 5-tuple with
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324 - service (unicode): pubsub service where the comments node is
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325 - node (unicode): comments node
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326 - failure (unicode): empty in case of success, else error message
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327 - comments(list[dict]): list of microblog data
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328 - comments_metadata(dict): metadata of the comment node
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329 @param metadata(dict): original node metadata
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330 @param options: dict defining the blog's parameters
388
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331 @param request: the HTTP request
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332 @param pub_jid (JID): publisher JID
388
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333 """
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334 if not isinstance(options, dict):
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335 options = {}
727
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336 user = sanitizeHtml(pub_jid.user)
389
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337 root_url = '../' * len(request.postpath)
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338 base_url = root_url + 'blog/' + user
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339
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340 def getOption(key):
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341 return sanitizeHtml(options[key]) if key in options else ''
441
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342
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343 def getImageParams(key, default, alt):
441
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344 """regexp from http://answers.oreilly.com/topic/280-how-to-validate-urls-with-regular-expressions/"""
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345 url = options[key] if key in options else ''
441
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346 regexp = r"^(https?|ftp)://[a-z0-9-]+(\.[a-z0-9-]+)+(/[\w-]+)*/[\w-]+\.(gif|png|jpg)$"
702
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347 if re.match(regexp, url):
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348 url = url
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diff changeset
349 else:
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350 url = default
712
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351 return BlogImage(url, alt)
441
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diff changeset
352
702
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353 avatar = os.path.normpath(root_url + getOption('avatar'))
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354 title = getOption(C.STATIC_BLOG_PARAM_TITLE) or user
704
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diff changeset
355 data = {'base_url': base_url,
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356 'keywords': getOption(C.STATIC_BLOG_PARAM_KEYWORDS),
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357 'description': getOption(C.STATIC_BLOG_PARAM_DESCRIPTION),
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358 'title': title,
704
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diff changeset
359 'favicon': avatar,
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360 'banner_img': getImageParams(C.STATIC_BLOG_PARAM_BANNER, avatar, title)
704
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diff changeset
361 }
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362
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363 items.sort(key=lambda entry: (-float(entry[0].get('updated', 0))))
704
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diff changeset
364
725
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diff changeset
365 data['navlinks'] = NavigationLinks(request, items, metadata, base_url)
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366 data['messages'] = []
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diff changeset
367 for item in items:
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diff changeset
368 item, comments_list = item
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diff changeset
369 comments, comments_count = [], 0
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370 for node_comments in comments_list:
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371 comments.extend(node_comments[3])
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diff changeset
372 try:
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373 comments_count += int(node_comments[4]['rsm_count'])
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374 except KeyError:
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diff changeset
375 pass
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diff changeset
376 data['messages'].append(BlogMessage(request, base_url, item, comments, comments_count))
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diff changeset
377
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diff changeset
378 request.write(self.useTemplate(request, 'static_blog', data))
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diff changeset
379 request.finish()
243
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parents: 229
diff changeset
380
712
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diff changeset
381 def render_atom_feed(self, feed, request):
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diff changeset
382 request.write(feed.encode('utf-8'))
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diff changeset
383 request.finish()
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384
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385 def render_error_blog(self, error, request, pub_jid):
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386 request.write(self.useTemplate(request, "static_blog_error", {'message': "Can't access requested data"}))
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387 request.finish()
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388
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389
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390 class NavigationLinks(object):
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391
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392 def __init__(self, request, items, rsm_data, base_url):
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393 """Build the navigation links.
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394
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395 @param items (list): list of items
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396 @param rsm_data (dict): rsm data
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397 @param base_url (unicode): the base URL for this user's blog
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398 @return: dict
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399 """
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400 for key in ('later_message', 'later_messages', 'older_message', 'older_messages'):
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401 count = int(rsm_data.get('rsm_count', 0))
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402 setattr(self, key, '') # key must exist when using the template
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403 if count <= 0 or (request.display_single == key.endswith('s')):
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404 continue
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405
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406 index = int(rsm_data['rsm_index'])
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407
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408 link_data = {'base_url': base_url, 'suffix': ''}
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409
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410 if key.startswith('later_message'):
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411 if index <= 0:
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412 continue
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413 link_data['item_id'] = rsm_data['rsm_first']
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414 link_data['post_arg'] = 'before'
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415 else:
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416 if index + len(items) >= count:
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417 continue
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418 link_data['item_id'] = rsm_data['rsm_last']
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419 link_data['post_arg'] = 'after'
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420
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421 if request.display_single:
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422 link_data['suffix'] = '&max=1'
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423
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424 link = "%(base_url)s?%(post_arg)s=%(item_id)s%(suffix)s" % link_data
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425
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426 setattr(self, key, BlogLink(link, key, key.replace('_', ' ')))
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427
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428
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429 class BlogImage(object):
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430
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431 def __init__(self, url_, alt):
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432 self.url = url_
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433 self.alt = alt
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434
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435
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436 class BlogLink(object):
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437
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438 def __init__(self, url_, style, text):
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439 self.url = url_
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440 self.style = style
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441 self.text = text
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442
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443
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444 class BlogMessage(object):
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445
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446 def __init__(self, request, base_url, entry, comments=None, comments_count=0):
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447 """
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448
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449 @param request: HTTP request
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450 @param base_url (unicode): the base URL
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451 @param entry(dict): item microblog data
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452 @param comments(list[dict]): list of microblog data
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453 @param comments_count (int): total number of comments
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454 """
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455 timestamp = float(entry.get('published', 0))
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456
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457 # FIXME: for now we assume that the comments' depth is only 1
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458 is_comment = not entry.get('comments', False)
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459
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460 self.date = datetime.fromtimestamp(timestamp)
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461 self.type = "comment" if is_comment else "main_item"
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462 self.style = 'mblog_comment' if is_comment else ''
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463 self.content = self.getText(entry, 'content')
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464
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465 if is_comment:
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466 self.author = (_("from %s") % entry['author'])
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467 else:
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468 self.author = '&nbsp;'
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469 self.url = (u"%s/%s" % (base_url, entry['id']))
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470 self.title = self.getText(entry, 'title')
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471
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472 count_text = lambda count: D_('comments') if count > 1 else D_('comment')
704
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473
712
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474 self.comments_text = "%s %s" % (comments_count, count_text(comments_count))
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475
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diff changeset
476 delta = comments_count - len(comments)
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477 if request.display_single and delta > 0:
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478 prev_url = "%s?comments_max=%s" % (self.url, unicode(comments_count))
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479 prev_text = D_("show %(count)d previous %(comments)s") % \
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diff changeset
480 {'count': delta, 'comments': count_text(delta)}
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481 self.all_comments_link = BlogLink(prev_url, "comments_link", prev_text)
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diff changeset
482
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diff changeset
483 if comments:
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diff changeset
484 comments.sort(key=lambda comment: float(comment.get('published', 0)))
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485 self.comments = [BlogMessage(request, base_url, comment) for comment in comments]
704
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diff changeset
486
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diff changeset
487 def getText(self, entry, key):
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diff changeset
488 if ('%s_xhtml' % key) in entry:
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489 return entry['%s_xhtml' % key]
704
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diff changeset
490 elif key in entry:
5319110a862c server_side: static blog uses the default template
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diff changeset
491 processor = addURLToText if key.startswith('content') else sanitizeHtml
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diff changeset
492 return convertNewLinesToXHTML(processor(entry[key]))
704
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diff changeset
493 return None