Mercurial > libervia-web
annotate src/server/blog.py @ 484:ae86b32b959c
server side (blog): manage our own avatars cache because existing entity data are not updated
| author | souliane <souliane@mailoo.org> |
|---|---|
| date | Tue, 17 Jun 2014 17:13:56 +0200 |
| parents | 0bbbef1d53a8 |
| children | e588335b6aa8 |
| rev | line source |
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| 10 | 1 #!/usr/bin/python |
| 2 # -*- coding: utf-8 -*- | |
| 3 | |
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4 # Libervia: a Salut à Toi frontend |
| 340 | 5 # Copyright (C) 2011, 2012, 2013, 2014 Jérôme Poisson <goffi@goffi.org> |
| 10 | 6 |
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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. |
| 10 | 11 |
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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. |
| 10 | 16 |
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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/>. |
| 10 | 19 |
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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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24 |
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25 from twisted.internet import defer |
| 10 | 26 from twisted.web import server |
| 27 from twisted.web.resource import Resource | |
| 28 from twisted.words.protocols.jabber.jid import JID | |
| 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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36 |
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37 |
| 10 | 38 class MicroBlog(Resource): |
| 39 isLeaf = True | |
| 40 | |
| 41 ERROR_TEMPLATE = """ | |
| 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"> |
| 10 | 45 <title>MICROBLOG ERROR</title> |
| 46 </head> | |
| 47 <body> | |
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48 <h1 style='text-align: center; color: red;'>%(message)s</h1> |
| 10 | 49 </body> |
| 50 </html> | |
| 51 """ | |
| 52 | |
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53 def __init__(self, host): |
| 10 | 54 self.host = host |
| 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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60 |
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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 log.debug(_("Received a new avatar for entity %s") % entity_jid_s) |
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73 avatar = C.AVATARS_DIR + value |
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74 self.avatars_cache[entity_jid_s] = avatar |
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75 try: |
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76 self.waiting_deferreds[entity_jid_s][1].callback(avatar) |
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77 del self.waiting_deferreds[entity_jid_s] |
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78 except KeyError: |
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79 pass |
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80 |
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81 def actionResultCb(self, answer_type, action_id, data, dummy): |
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82 """Fires the callback for self.getAvatar to return |
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83 |
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84 @param answer_type (str): 'SUPPRESS' or another value that we would ignore |
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85 @param action_id (str): the request ID |
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86 @param data (dict): ignored |
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87 @param dummy (str): that would be C.SERVICE_PROFILE |
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88 """ |
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89 # FIXME: actionResult is to be removed. For now we use it to get notified |
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90 # when the requested vCard hasn't been found. Replace with the new system. |
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91 if answer_type != 'SUPPRESS': |
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92 return |
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93 try: |
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94 entity_jid_s = [key for (key, value) in self.waiting_deferreds.items() if value[0] == action_id][0] |
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95 except IndexError: # impossible to guess the entity |
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96 return |
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97 log.debug(_("Using default avatar for entity %s") % entity_jid_s) |
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98 self.avatars_cache[entity_jid_s] = C.DEFAULT_AVATAR |
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99 self.waiting_deferreds[entity_jid_s][1].callback(C.DEFAULT_AVATAR) |
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100 del self.waiting_deferreds[entity_jid_s] |
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101 |
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102 def getAvatar(self, profile): |
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103 """Get the avatar of the given profile |
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104 |
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105 @param profile (str): |
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106 @return: deferred avatar path, relative to the server's root |
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107 """ |
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108 jid_s = profile + '@' + self.host.bridge.getNewAccountDomain() |
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109 if jid_s in self.avatars_cache: |
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110 return defer.succeed(self.avatars_cache[jid_s]) |
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111 # FIXME: request_id is no more need when actionResult is removed |
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112 request_id = self.host.bridge.getCard(jid_s, C.SERVICE_PROFILE) |
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113 self.waiting_deferreds[jid_s] = (request_id, defer.Deferred()) |
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114 return self.waiting_deferreds[jid_s][1] |
| 10 | 115 |
| 116 def render_GET(self, request): | |
| 117 if not request.postpath: | |
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118 return MicroBlog.ERROR_TEMPLATE % {'root': '', |
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119 'message': "You must indicate a nickname"} |
| 10 | 120 else: |
| 121 prof_requested = request.postpath[0] | |
| 122 #TODO: char check: only use alphanumerical chars + some extra(_,-,...) here | |
| 123 prof_found = self.host.bridge.getProfileName(prof_requested) | |
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124 if not prof_found or prof_found == C.SERVICE_PROFILE: |
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125 return MicroBlog.ERROR_TEMPLATE % {'root': '../' * len(request.postpath), |
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126 'message': "Invalid nickname"} |
| 10 | 127 else: |
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128 def got_jid(pub_jid_s): |
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129 pub_jid = JID(pub_jid_s) |
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130 d2 = defer.Deferred() |
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131 item_id = None |
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132 try: |
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133 max_items = int(request.args['max_items'][0]) |
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134 except (ValueError, KeyError): |
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135 max_items = 10 |
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136 if len(request.postpath) > 1: |
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137 if request.postpath[1] == 'atom.xml': # return the atom feed |
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138 d2.addCallbacks(self.render_atom_feed, self.render_error_blog, [request], None, [request, prof_found], None) |
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139 self.host.bridge.getLastGroupBlogsAtom(pub_jid.userhost(), max_items, C.SERVICE_PROFILE, d2.callback, d2.errback) |
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140 return |
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141 try: # check if the given path is a valid UUID |
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142 uuid.UUID(request.postpath[1]) |
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143 item_id = request.postpath[1] |
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144 except ValueError: |
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145 pass |
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146 d2.addCallbacks(self.render_html_blog, self.render_error_blog, [request, prof_found], None, [request, prof_found], None) |
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147 if item_id: # display one message and its comments |
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148 self.host.bridge.getGroupBlogsWithComments(pub_jid.userhost(), [item_id], C.SERVICE_PROFILE, d2.callback, d2.errback) |
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149 else: # display the last messages without comment |
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150 self.host.bridge.getLastGroupBlogs(pub_jid.userhost(), max_items, C.SERVICE_PROFILE, d2.callback, d2.errback) |
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151 |
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152 d1 = defer.Deferred() |
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153 JID(self.host.bridge.asyncGetParamA('JabberID', 'Connection', 'value', C.SERVER_SECURITY_LIMIT, prof_found, callback=d1.callback, errback=d1.errback)) |
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154 d1.addCallbacks(got_jid) |
| 10 | 155 |
| 156 return server.NOT_DONE_YET | |
| 157 | |
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158 def render_html_blog(self, mblog_data, request, profile): |
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159 """Retrieve the user parameters before actually rendering the static blog |
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160 @param mblog_data: list of microblog data or list of couple (microblog data, list of microblog data) |
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161 @param request: HTTP request |
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162 @param profile |
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163 """ |
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164 d_list = [] |
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165 options = {} |
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166 |
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167 def getCallback(param_name): |
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168 d = defer.Deferred() |
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169 d.addCallback(lambda value: options.update({param_name: value})) |
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170 d_list.append(d) |
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171 return d.callback |
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172 |
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173 eb = lambda failure: self.render_error_blog(failure, request, profile) |
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174 |
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175 self.getAvatar(profile).addCallbacks(getCallback('avatar'), eb) |
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176 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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177 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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178 |
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179 cb = lambda dummy: self.__render_html_blog(mblog_data, options, request, profile) |
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180 defer.DeferredList(d_list).addCallback(cb) |
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181 |
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182 def __render_html_blog(self, mblog_data, options, request, profile): |
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183 """Actually render the static blog. If mblog_data is a list of dict, we are missing |
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184 the comments items so we just display the main items. If mblog_data is a list of couple, |
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185 each couple is associating a main item data with the list of its comments, so we render all. |
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186 @param mblog_data: list of microblog data or list of couple (microblog data, list of microblog data) |
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187 @param options: dict defining the blog's parameters |
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188 @param request: the HTTP request |
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189 @profile |
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190 """ |
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191 if not isinstance(options, dict): |
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192 options = {} |
| 10 | 193 user = sanitizeHtml(profile).encode('utf-8') |
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194 root_url = '../' * len(request.postpath) |
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195 base_url = root_url + 'blog/' + user |
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196 |
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197 def getOption(key): |
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198 return sanitizeHtml(options[key]).encode('utf-8') if key in options else '' |
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199 |
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200 def getImageOption(key, alt): |
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201 """regexp from http://answers.oreilly.com/topic/280-how-to-validate-urls-with-regular-expressions/""" |
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202 url = options[key].encode('utf-8') if key in options else '' |
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203 regexp = r"^(https?|ftp)://[a-z0-9-]+(\.[a-z0-9-]+)+(/[\w-]+)*/[\w-]+\.(gif|png|jpg)$" |
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204 return "<img src='%(url)s' alt='%(alt)s'/>" % {'alt': alt, 'url': url} if re.match(regexp, url) else alt |
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205 |
| 10 | 206 request.write(""" |
| 207 <html> | |
| 208 <head> | |
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209 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> |
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210 <meta name="keywords" content="%(keywords)s"> |
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211 <meta name="description" content="%(description)s"> |
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212 <link rel="alternate" type="application/atom+xml" href="%(base)s/atom.xml"/> |
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213 <link rel="stylesheet" type="text/css" href="%(root)scss/blog.css" /> |
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214 <link rel="icon" type="image/png" href="%(favicon)s"> |
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215 <title>%(title)s</title> |
| 10 | 216 </head> |
| 217 <body> | |
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218 <div class="mblog_title"><a href="%(base)s">%(banner_elt)s</a></div> |
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219 """ % {'base': base_url, |
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220 'root': root_url, |
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221 'user': user, |
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222 'keywords': getOption(C.STATIC_BLOG_PARAM_KEYWORDS), |
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223 'description': getOption(C.STATIC_BLOG_PARAM_DESCRIPTION), |
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224 'title': getOption(C.STATIC_BLOG_PARAM_TITLE) or "%s's microblog" % user, |
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225 'favicon': os.path.normpath(root_url + getOption('avatar')), |
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226 'banner_elt': getImageOption(C.STATIC_BLOG_PARAM_BANNER, getOption(C.STATIC_BLOG_PARAM_TITLE) or user)}) |
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227 mblog_data = [(entry if isinstance(entry, tuple) else (entry, [])) for entry in mblog_data] |
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228 mblog_data = sorted(mblog_data, key=lambda entry: (-float(entry[0].get('published', 0)))) |
| 10 | 229 for entry in mblog_data: |
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230 self.__render_html_entry(entry[0], base_url, request) |
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231 comments = sorted(entry[1], key=lambda entry: (float(entry.get('published', 0)))) |
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232 for comment in comments: |
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233 self.__render_html_entry(comment, base_url, request) |
| 10 | 234 request.write('</body></html>') |
| 235 request.finish() | |
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243
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236 |
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237 def __render_html_entry(self, entry, base_url, request): |
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238 """Render one microblog entry. |
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239 @param entry: the microblog entry |
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240 @param base_url: the base url of the blog |
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241 @param request: the HTTP request |
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242 """ |
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243 timestamp = float(entry.get('published', 0)) |
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244 datetime_ = datetime.fromtimestamp(timestamp) |
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245 is_comment = entry['type'] == 'comment' |
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246 if is_comment: |
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247 author = (_("comment from %s") % entry['author']).encode('utf-8') |
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248 item_link = '' |
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249 else: |
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250 author = ' ' |
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251 item_link = ("%(base)s/%(item_id)s" % {'base': base_url, 'item_id': entry['id']}).encode('utf-8') |
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252 |
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253 def getText(key): |
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254 if ('%s_xhtml' % key) in entry: |
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255 return entry['%s_xhtml' % key].encode('utf-8') |
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256 elif key in entry: |
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257 processor = addURLToText if key.startswith('content') else sanitizeHtml |
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258 return processor(entry[key]).encode('utf-8') |
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259 return '' |
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260 |
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261 def addMainItemLink(elem): |
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262 if not item_link or not elem: |
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263 return elem |
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264 return """<a href="%(link)s" class="item_link">%(elem)s</a>""" % {'link': item_link, 'elem': elem} |
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265 |
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266 header = addMainItemLink("""<div class="mblog_header"> |
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267 <div class="mblog_metadata"> |
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268 <div class="mblog_author">%(author)s</div> |
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269 <div class="mblog_timestamp">%(date)s</div> |
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270 </div> |
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271 </div>""" % {'author': author, 'date': datetime_}) |
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272 |
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273 title = addMainItemLink(getText('title')) |
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274 body = getText('content') |
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275 if title: # insert the title within the body |
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276 body = """<h1>%(title)s</h1>\n%(body)s""" % {'title': title, 'body': body} |
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277 |
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278 request.write("""<div class="mblog_entry %(extra_style)s"> |
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279 %(header)s |
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280 <span class="mblog_content">%(content)s</span> |
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281 </div>""" % |
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282 {'extra_style': 'mblog_comment' if entry['type'] == 'comment' else '', |
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283 'item_link': item_link, |
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284 'header': header, |
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285 'content': body}) |
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286 |
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287 def render_atom_feed(self, feed, request): |
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288 request.write(feed.encode('utf-8')) |
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289 request.finish() |
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290 |
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291 def render_error_blog(self, error, request, profile): |
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292 request.write(MicroBlog.ERROR_TEMPLATE % {'root': '../' * len(request.postpath), |
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293 'message': "Can't access requested data"}) |
| 10 | 294 request.finish() |