annotate src/server/blog.py @ 520:d58d4dd0cefe

browser and server sides: add bridge method getLastResource
author souliane <souliane@mailoo.org>
date Tue, 02 Sep 2014 21:21:21 +0200
parents e588335b6aa8
children 3eb3a2c0c011 7af8f4ab3675
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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 Jérôme Poisson <goffi@goffi.org>
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 from sat.core.i18n import _
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21 from sat_frontends.tools.strings import addURLToText
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22 from sat.core.log import getLogger
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23 log = getLogger(__name__)
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25 from twisted.internet import defer
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26 from twisted.web import server
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27 from twisted.web.resource import Resource
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28 from twisted.words.protocols.jabber.jid import JID
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29 from datetime import datetime
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30 import uuid
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31 import re
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32 import os
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33
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34 from libervia.server.html_tools import sanitizeHtml
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35 from libervia.server.constants import Const as C
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37
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38 class MicroBlog(Resource):
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39 isLeaf = True
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40
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41 ERROR_TEMPLATE = """
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42 <html>
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43 <head profile="http://www.w3.org/2005/10/profile">
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44 <link rel="icon" type="image/png" href="%(root)ssat_logo_16.png">
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45 <title>MICROBLOG ERROR</title>
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46 </head>
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47 <body>
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48 <h1 style='text-align: center; color: red;'>%(message)s</h1>
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49 </body>
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50 </html>
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51 """
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52
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53 def __init__(self, host):
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54 self.host = host
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55 Resource.__init__(self)
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56 self.host.bridge.register('entityDataUpdated', self.entityDataUpdatedCb)
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57 self.host.bridge.register('actionResult', self.actionResultCb) # FIXME: actionResult is to be removed
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58 self.avatars_cache = {}
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59 self.waiting_deferreds = {}
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61 def entityDataUpdatedCb(self, entity_jid_s, key, value, dummy):
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62 """Retrieve the avatar we've been waiting for and fires the callback
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63 for self.getAvatar to return.
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64
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65 @param entity_jid_s (str): JID of the contact
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66 @param key (str): entity data key
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67 @param value (str): entity data value
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68 @param dummy (str): that would be C.SERVICE_PROFILE
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69 """
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70 if key != 'avatar':
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71 return
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72 entity_jid_s = entity_jid_s.lower()
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73 log.debug(_("Received a new avatar for entity %s") % entity_jid_s)
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74 avatar = C.AVATARS_DIR + value
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75 self.avatars_cache[entity_jid_s] = avatar
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76 try:
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77 self.waiting_deferreds[entity_jid_s][1].callback(avatar)
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78 del self.waiting_deferreds[entity_jid_s]
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79 except KeyError:
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80 pass
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81
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82 def actionResultCb(self, answer_type, action_id, data, dummy):
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83 """Fires the callback for self.getAvatar to return
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84
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85 @param answer_type (str): 'SUPPRESS' or another value that we would ignore
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86 @param action_id (str): the request ID
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87 @param data (dict): ignored
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88 @param dummy (str): that would be C.SERVICE_PROFILE
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89 """
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90 # FIXME: actionResult is to be removed. For now we use it to get notified
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91 # when the requested vCard hasn't been found. Replace with the new system.
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92 if answer_type != 'SUPPRESS':
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93 return
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94 try:
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95 entity_jid_s = [key for (key, value) in self.waiting_deferreds.items() if value[0] == action_id][0]
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96 except IndexError: # impossible to guess the entity
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97 return
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98 log.debug(_("Using default avatar for entity %s") % entity_jid_s)
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99 self.avatars_cache[entity_jid_s] = C.DEFAULT_AVATAR
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100 self.waiting_deferreds[entity_jid_s][1].callback(C.DEFAULT_AVATAR)
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101 del self.waiting_deferreds[entity_jid_s]
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102
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103 def getAvatar(self, profile):
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104 """Get the avatar of the given profile
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105
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106 @param profile (str):
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107 @return: deferred avatar path, relative to the server's root
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108 """
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109 jid_s = (profile + '@' + self.host.bridge.getNewAccountDomain()).lower()
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110 if jid_s in self.avatars_cache:
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111 return defer.succeed(self.avatars_cache[jid_s])
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112 # FIXME: request_id is no more need when actionResult is removed
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113 request_id = self.host.bridge.getCard(jid_s, C.SERVICE_PROFILE)
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114 self.waiting_deferreds[jid_s] = (request_id, defer.Deferred())
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115 return self.waiting_deferreds[jid_s][1]
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116
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117 def render_GET(self, request):
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118 if not request.postpath:
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119 return MicroBlog.ERROR_TEMPLATE % {'root': '',
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120 'message': "You must indicate a nickname"}
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121 else:
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122 prof_requested = request.postpath[0]
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123 #TODO: char check: only use alphanumerical chars + some extra(_,-,...) here
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124 prof_found = self.host.bridge.getProfileName(prof_requested)
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125 if not prof_found or prof_found == C.SERVICE_PROFILE:
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126 return MicroBlog.ERROR_TEMPLATE % {'root': '../' * len(request.postpath),
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127 'message': "Invalid nickname"}
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128 else:
149
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129 def got_jid(pub_jid_s):
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130 pub_jid = JID(pub_jid_s)
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diff changeset
131 d2 = defer.Deferred()
389
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132 item_id = None
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133 try:
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134 max_items = int(request.args['max_items'][0])
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diff changeset
135 except (ValueError, KeyError):
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diff changeset
136 max_items = 10
389
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diff changeset
137 if len(request.postpath) > 1:
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diff changeset
138 if request.postpath[1] == 'atom.xml': # return the atom feed
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139 d2.addCallbacks(self.render_atom_feed, self.render_error_blog, [request], None, [request, prof_found], None)
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diff changeset
140 self.host.bridge.getLastGroupBlogsAtom(pub_jid.userhost(), max_items, C.SERVICE_PROFILE, d2.callback, d2.errback)
389
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diff changeset
141 return
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diff changeset
142 try: # check if the given path is a valid UUID
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diff changeset
143 uuid.UUID(request.postpath[1])
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144 item_id = request.postpath[1]
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diff changeset
145 except ValueError:
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diff changeset
146 pass
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147 d2.addCallbacks(self.render_html_blog, self.render_error_blog, [request, prof_found], None, [request, prof_found], None)
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148 if item_id: # display one message and its comments
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diff changeset
149 self.host.bridge.getGroupBlogsWithComments(pub_jid.userhost(), [item_id], C.SERVICE_PROFILE, d2.callback, d2.errback)
389
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150 else: # display the last messages without comment
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151 self.host.bridge.getLastGroupBlogs(pub_jid.userhost(), max_items, C.SERVICE_PROFILE, d2.callback, d2.errback)
229
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152
149
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153 d1 = defer.Deferred()
433
bbdbee25123a import constants.Const as C (according to the coding rules)
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154 JID(self.host.bridge.asyncGetParamA('JabberID', 'Connection', 'value', C.SERVER_SECURITY_LIMIT, prof_found, callback=d1.callback, errback=d1.errback))
149
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diff changeset
155 d1.addCallbacks(got_jid)
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156
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157 return server.NOT_DONE_YET
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158
389
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diff changeset
159 def render_html_blog(self, mblog_data, request, profile):
441
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160 """Retrieve the user parameters before actually rendering the static blog
389
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diff changeset
161 @param mblog_data: list of microblog data or list of couple (microblog data, list of microblog data)
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162 @param request: HTTP request
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163 @param profile
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164 """
441
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165 d_list = []
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166 options = {}
441
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167
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diff changeset
168 def getCallback(param_name):
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169 d = defer.Deferred()
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170 d.addCallback(lambda value: options.update({param_name: value}))
441
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diff changeset
171 d_list.append(d)
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172 return d.callback
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diff changeset
173
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174 eb = lambda failure: self.render_error_blog(failure, request, profile)
441
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175
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176 self.getAvatar(profile).addCallbacks(getCallback('avatar'), eb)
441
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177 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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178 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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179
483
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180 cb = lambda dummy: self.__render_html_blog(mblog_data, options, request, profile)
441
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181 defer.DeferredList(d_list).addCallback(cb)
388
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182
483
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183 def __render_html_blog(self, mblog_data, options, request, profile):
389
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184 """Actually render the static blog. If mblog_data is a list of dict, we are missing
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185 the comments items so we just display the main items. If mblog_data is a list of couple,
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diff changeset
186 each couple is associating a main item data with the list of its comments, so we render all.
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187 @param mblog_data: list of microblog data or list of couple (microblog data, list of microblog data)
483
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188 @param options: dict defining the blog's parameters
388
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189 @param request: the HTTP request
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190 @profile
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191 """
483
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192 if not isinstance(options, dict):
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193 options = {}
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194 user = sanitizeHtml(profile).encode('utf-8')
389
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diff changeset
195 root_url = '../' * len(request.postpath)
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196 base_url = root_url + 'blog/' + user
441
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diff changeset
197
483
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diff changeset
198 def getOption(key):
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199 return sanitizeHtml(options[key]).encode('utf-8') if key in options else ''
441
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diff changeset
200
483
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diff changeset
201 def getImageOption(key, alt):
441
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202 """regexp from http://answers.oreilly.com/topic/280-how-to-validate-urls-with-regular-expressions/"""
483
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203 url = options[key].encode('utf-8') if key in options else ''
441
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diff changeset
204 regexp = r"^(https?|ftp)://[a-z0-9-]+(\.[a-z0-9-]+)+(/[\w-]+)*/[\w-]+\.(gif|png|jpg)$"
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diff changeset
205 return "<img src='%(url)s' alt='%(alt)s'/>" % {'alt': alt, 'url': url} if re.match(regexp, url) else alt
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parents: 436
diff changeset
206
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diff changeset
207 request.write("""
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Goffi <goffi@goffi.org>
parents:
diff changeset
208 <html>
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diff changeset
209 <head>
175
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Goffi <goffi@goffi.org>
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diff changeset
210 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
441
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diff changeset
211 <meta name="keywords" content="%(keywords)s">
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diff changeset
212 <meta name="description" content="%(description)s">
389
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diff changeset
213 <link rel="alternate" type="application/atom+xml" href="%(base)s/atom.xml"/>
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diff changeset
214 <link rel="stylesheet" type="text/css" href="%(root)scss/blog.css" />
483
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diff changeset
215 <link rel="icon" type="image/png" href="%(favicon)s">
441
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diff changeset
216 <title>%(title)s</title>
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diff changeset
217 </head>
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parents:
diff changeset
218 <body>
389
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diff changeset
219 <div class="mblog_title"><a href="%(base)s">%(banner_elt)s</a></div>
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diff changeset
220 """ % {'base': base_url,
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souliane <souliane@mailoo.org>
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diff changeset
221 'root': root_url,
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diff changeset
222 'user': user,
483
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diff changeset
223 'keywords': getOption(C.STATIC_BLOG_PARAM_KEYWORDS),
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diff changeset
224 'description': getOption(C.STATIC_BLOG_PARAM_DESCRIPTION),
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diff changeset
225 'title': getOption(C.STATIC_BLOG_PARAM_TITLE) or "%s's microblog" % user,
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diff changeset
226 'favicon': os.path.normpath(root_url + getOption('avatar')),
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diff changeset
227 'banner_elt': getImageOption(C.STATIC_BLOG_PARAM_BANNER, getOption(C.STATIC_BLOG_PARAM_TITLE) or user)})
389
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diff changeset
228 mblog_data = [(entry if isinstance(entry, tuple) else (entry, [])) for entry in mblog_data]
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diff changeset
229 mblog_data = sorted(mblog_data, key=lambda entry: (-float(entry[0].get('published', 0))))
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230 for entry in mblog_data:
389
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diff changeset
231 self.__render_html_entry(entry[0], base_url, request)
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diff changeset
232 comments = sorted(entry[1], key=lambda entry: (float(entry.get('published', 0))))
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diff changeset
233 for comment in comments:
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diff changeset
234 self.__render_html_entry(comment, base_url, request)
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diff changeset
235 request.write('</body></html>')
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parents:
diff changeset
236 request.finish()
243
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parents: 229
diff changeset
237
389
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diff changeset
238 def __render_html_entry(self, entry, base_url, request):
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diff changeset
239 """Render one microblog entry.
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diff changeset
240 @param entry: the microblog entry
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diff changeset
241 @param base_url: the base url of the blog
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diff changeset
242 @param request: the HTTP request
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243 """
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244 timestamp = float(entry.get('published', 0))
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245 datetime_ = datetime.fromtimestamp(timestamp)
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246 is_comment = entry['type'] == 'comment'
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247 if is_comment:
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248 author = (_("comment from %s") % entry['author']).encode('utf-8')
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249 item_link = ''
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250 else:
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251 author = '&nbsp;'
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252 item_link = ("%(base)s/%(item_id)s" % {'base': base_url, 'item_id': entry['id']}).encode('utf-8')
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253
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254 def getText(key):
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255 if ('%s_xhtml' % key) in entry:
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256 return entry['%s_xhtml' % key].encode('utf-8')
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257 elif key in entry:
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258 processor = addURLToText if key.startswith('content') else sanitizeHtml
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259 return processor(entry[key]).encode('utf-8')
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260 return ''
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261
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souliane <souliane@mailoo.org>
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262 def addMainItemLink(elem):
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souliane <souliane@mailoo.org>
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263 if not item_link or not elem:
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264 return elem
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265 return """<a href="%(link)s" class="item_link">%(elem)s</a>""" % {'link': item_link, 'elem': elem}
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266
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souliane <souliane@mailoo.org>
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267 header = addMainItemLink("""<div class="mblog_header">
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268 <div class="mblog_metadata">
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269 <div class="mblog_author">%(author)s</div>
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270 <div class="mblog_timestamp">%(date)s</div>
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271 </div>
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272 </div>""" % {'author': author, 'date': datetime_})
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273
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274 title = addMainItemLink(getText('title'))
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275 body = getText('content')
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276 if title: # insert the title within the body
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277 body = """<h1>%(title)s</h1>\n%(body)s""" % {'title': title, 'body': body}
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278
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279 request.write("""<div class="mblog_entry %(extra_style)s">
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280 %(header)s
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281 <span class="mblog_content">%(content)s</span>
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282 </div>""" %
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283 {'extra_style': 'mblog_comment' if entry['type'] == 'comment' else '',
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284 'item_link': item_link,
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285 'header': header,
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286 'content': body})
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287
344
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288 def render_atom_feed(self, feed, request):
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289 request.write(feed.encode('utf-8'))
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290 request.finish()
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291
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Goffi <goffi@goffi.org>
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292 def render_error_blog(self, error, request, profile):
409
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293 request.write(MicroBlog.ERROR_TEMPLATE % {'root': '../' * len(request.postpath),
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294 'message': "Can't access requested data"})
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parents:
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295 request.finish()