1 | from google.appengine.api import urlfetch, users
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2 | from google.appengine.ext import db
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3 | from google.appengine.ext.webapp import RequestHandler, WSGIApplication, template
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4 | from google.appengine.ext.db import djangoforms
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5 | from urllib import urlencode
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6 | from wsgiref.handlers import CGIHandler
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7 |
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8 | try:
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9 | from django import newforms as forms
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10 | except ImportError:
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11 | from django import forms
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12 |
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13 | try:
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14 | from django.contrib.localflavor.us.forms import USPhoneNumberField
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15 | except ImportError:
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16 | from django.contrib.localflavor.usa.forms import USPhoneNumberField
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17 |
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18 | import logging, os, re
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19 |
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20 | logging.getLogger().setLevel(logging.DEBUG)
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21 |
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22 | CLICK2CALL_URL = 'https://secure.click2callu.com/tpcc/makecall'
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23 |
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24 | def vonageize_number(number):
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25 | number = re.sub(r'\D', '', number)
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26 | if len(number) == 0:
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27 | raise forms.ValidationError('Please enter a telephone number.')
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28 | if number[0] == '1':
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29 | number = number[1:]
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30 | if len(number) != 10:
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31 | raise forms.ValidationError('Please enter a 10-digit US telephone number.')
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32 | return '1' + number
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33 |
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34 | class VonageUSNumberProperty(db.PhoneNumberProperty):
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35 | def validate(self, value):
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36 | return vonageize_number(value)
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37 |
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38 | class VonageNumber(db.Model):
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39 | label = db.StringProperty()
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40 | username = db.StringProperty(required=True)
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41 | password = db.StringProperty(required=True)
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42 | number = VonageUSNumberProperty(required=True)
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43 |
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44 | class AllowedUser(db.Model):
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45 | user = db.UserProperty(required=True)
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46 |
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47 | def login_required(f):
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48 | def handle(self):
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49 | user = users.get_current_user()
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50 | if user is None:
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51 | return self.redirect(users.create_login_url(self.request.uri))
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52 | if AllowedUser.gql('WHERE user = :1', user).get() is None:
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53 | if users.is_current_user_admin():
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54 | AllowedUser(user=user).put()
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55 | else:
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56 | email = user.email()
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57 | logging.error('Denied access to ' + email)
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58 | return self.unavailable(
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59 | 'Your account <b>%s</b> does not have permission to use this service.' %
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60 | email)
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61 | return f(self)
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62 | return handle
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63 |
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64 | def admin_required(f):
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65 | def handle(self):
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66 | if not users.is_current_user_admin():
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67 | return self.unavailable('This function requires you to be an administrator.')
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68 | return f(self)
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69 | return handle
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70 |
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71 | class NumberForm(djangoforms.ModelForm):
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72 | password = forms.CharField(widget=forms.widgets.PasswordInput)
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73 | number = USPhoneNumberField(label='Vonage number')
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74 |
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75 | class Meta:
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76 | model = VonageNumber
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77 | exclude = ['label']
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78 |
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79 | class BasePage(RequestHandler):
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80 | def render(self, **kw):
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81 | self.response.out.write(template.render(self.template_path, kw))
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82 |
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83 | def unavailable(self, msg):
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84 | self.render(unavailable=msg,
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85 | logout_url=users.create_logout_url(self.request.uri))
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86 |
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87 | class NumbersPage(BasePage):
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88 | template_path = os.path.join(os.path.dirname(__file__), 'numbers.html')
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89 |
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90 | @admin_required
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91 | def get(self):
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92 | self.render(form=NumberForm(instance=VonageNumber.all().get()))
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93 |
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94 | @admin_required
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95 | def post(self):
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96 | form = NumberForm(data=self.request.POST,
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97 | instance=VonageNumber.all().get())
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98 | if not form.is_valid():
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99 | return self.render(form=form)
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100 | try:
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101 | form.save()
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102 | except Exception, e:
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103 | return self.render(form=form, error=e.message)
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104 | self.redirect('/')
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105 |
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106 | class MainPage(BasePage):
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107 | template_path = os.path.join(os.path.dirname(__file__), 'index.html')
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108 |
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109 | def error(self, msg, **kw):
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110 | self.render(error=msg, tonumber=self.request.get('tonumber', ''), **kw)
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111 |
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112 | def failure(self, msg):
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113 | logging.error('TPCC server error: ' + msg)
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114 | self.error('The Vonage Click2Call server could not complete your call.',
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115 | failure=msg)
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116 |
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117 | def no_number(self):
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118 | if users.is_current_user_admin():
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119 | return self.redirect('/numbers')
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120 | self.unavailable('No phone numbers have been configured. Please ask an administrator to log in and add a phone number.')
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121 |
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122 | @login_required
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123 | def get(self):
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124 | if VonageNumber.all().get() is None:
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125 | return self.no_number()
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126 | self.render()
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127 |
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128 | @login_required
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129 | def post(self):
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130 | fromnumber = VonageNumber.all().get()
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131 | if fromnumber is None:
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132 | return self.no_number()
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133 |
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134 | try:
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135 | tonumber = vonageize_number(self.request.get('tonumber', ''))
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136 | except Exception, e:
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137 | return self.error(e.message)
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138 |
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139 | body = urlencode(
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140 | dict(username=fromnumber.username, password=fromnumber.password,
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141 | fromnumber=fromnumber.number, tonumber=tonumber))
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142 | try:
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143 | response = urlfetch.fetch(CLICK2CALL_URL + '?' + body)
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144 | # get random auth errors with body, urlfetch.POST)
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145 | except urlfetch.Error, e:
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146 | return self.failure(e.message)
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147 |
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148 | if response.status_code != 200 or response.content[:3] != '000':
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149 | return self.failure(response.content)
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150 |
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151 | logging.info('Dialing %s' % tonumber)
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152 | return self.render(
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153 | message='Dialing. Please answer your phone when it rings.')
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154 |
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155 | def main():
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156 | CGIHandler().run(WSGIApplication([('/', MainPage),
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157 | ('/numbers', NumbersPage)], debug=True))
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158 |
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159 | if __name__ == "__main__":
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160 | main()
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