Coverage for /var/srv/projects/api.amasfac.comuna18.com/tmp/venv/lib/python3.9/site-packages/django/views/csrf.py: 40%

1from django.conf import settings

2from django.http import HttpResponseForbidden

3from django.template import Context, Engine, TemplateDoesNotExist, loader

4from django.utils.translation import gettext as _

5from django.utils.version import get_docs_version

7# We include the template inline since we need to be able to reliably display

8# this error message, especially for the sake of developers, and there isn't any

9# other way of making it available independent of what is in the settings file.

11# Only the text appearing with DEBUG=False is translated. Normal translation

12# tags cannot be used with this inline templates as makemessages would not be

13# able to discover the strings.

15CSRF_FAILURE_TEMPLATE = """

16<!DOCTYPE html>

17<html lang="en">

18<head>

19 <meta http-equiv="content-type" content="text/html; charset=utf-8">

20 <meta name="robots" content="NONE,NOARCHIVE">

21 <title>403 Forbidden</title>

22 <style type="text/css">

23 html * { padding:0; margin:0; }

24 body * { padding:10px 20px; }

25 body * * { padding:0; }

26 body { font:small sans-serif; background:#eee; color:#000; }

27 body>div { border-bottom:1px solid #ddd; }

28 h1 { font-weight:normal; margin-bottom:.4em; }

29 h1 span { font-size:60%; color:#666; font-weight:normal; }

30 #info { background:#f6f6f6; }

31 #info ul { margin: 0.5em 4em; }

32 #info p, #summary p { padding-top:10px; }

33 #summary { background: #ffc; }

34 #explanation { background:#eee; border-bottom: 0px none; }

35 </style>

36</head>

37<body>

38<div id="summary">

39 <h1>{{ title }} <span>(403)</span></h1>

40 <p>{{ main }}</p>

41{% if no_referer %}

42 <p>{{ no_referer1 }}</p>

43 <p>{{ no_referer2 }}</p>

44 <p>{{ no_referer3 }}</p>

45{% endif %}

46{% if no_cookie %}

47 <p>{{ no_cookie1 }}</p>

48 <p>{{ no_cookie2 }}</p>

49{% endif %}

50</div>

51{% if DEBUG %}

52<div id="info">

53 <h2>Help</h2>

54 {% if reason %}

55 <p>Reason given for failure:</p>

56 <pre>

57 {{ reason }}

58 </pre>

59 {% endif %}

61 <p>In general, this can occur when there is a genuine Cross Site Request Forgery, or when

62 <a

63 href="https://docs.djangoproject.com/en/{{ docs_version }}/ref/csrf/">Django’s

64 CSRF mechanism</a> has not been used correctly. For POST forms, you need to

65 ensure:</p>

67 <ul>

68 <li>Your browser is accepting cookies.</li>

70 <li>The view function passes a <code>request</code> to the template’s <a

71 href="https://docs.djangoproject.com/en/dev/topics/templates/#django.template.backends.base.Template.render"><code>render</code></a>

72 method.</li>

74 <li>In the template, there is a <code>{% templatetag openblock %} csrf_token

75 {% templatetag closeblock %}</code> template tag inside each POST form that

76 targets an internal URL.</li>

78 <li>If you are not using <code>CsrfViewMiddleware</code>, then you must use

79 <code>csrf_protect</code> on any views that use the <code>csrf_token</code>

80 template tag, as well as those that accept the POST data.</li>

82 <li>The form has a valid CSRF token. After logging in in another browser

83 tab or hitting the back button after a login, you may need to reload the

84 page with the form, because the token is rotated after a login.</li>

85 </ul>

87 <p>You’re seeing the help section of this page because you have <code>DEBUG =

88 True</code> in your Django settings file. Change that to <code>False</code>,

89 and only the initial error message will be displayed. </p>

91 <p>You can customize this page using the CSRF_FAILURE_VIEW setting.</p>

92</div>

93{% else %}

94<div id="explanation">

95 <p><small>{{ more }}</small></p>

96</div>

97{% endif %}

98</body>

99</html>

100""" # NOQA

101CSRF_FAILURE_TEMPLATE_NAME = "403_csrf.html"

102

103

104def csrf_failure(request, reason="", template_name=CSRF_FAILURE_TEMPLATE_NAME):

105 """

106 Default view used when request fails CSRF protection

107 """

108 from django.middleware.csrf import REASON_NO_CSRF_COOKIE, REASON_NO_REFERER

109

110 c = {

111 "title": _("Forbidden"),

112 "main": _("CSRF verification failed. Request aborted."),

113 "reason": reason,

114 "no_referer": reason == REASON_NO_REFERER,

115 "no_referer1": _(

116 "You are seeing this message because this HTTPS site requires a "

117 "“Referer header” to be sent by your web browser, but none was "

118 "sent. This header is required for security reasons, to ensure "

119 "that your browser is not being hijacked by third parties."

120 ),

121 "no_referer2": _(

122 "If you have configured your browser to disable “Referer” headers, "

123 "please re-enable them, at least for this site, or for HTTPS "

124 "connections, or for “same-origin” requests."

125 ),

126 "no_referer3": _(

127 'If you are using the <meta name="referrer" '

128 'content="no-referrer"> tag or including the “Referrer-Policy: '

129 "no-referrer” header, please remove them. The CSRF protection "

130 "requires the “Referer” header to do strict referer checking. If "

131 "you’re concerned about privacy, use alternatives like "

132 '<a rel="noreferrer" …> for links to third-party sites.'

133 ),

134 "no_cookie": reason == REASON_NO_CSRF_COOKIE,

135 "no_cookie1": _(

136 "You are seeing this message because this site requires a CSRF "

137 "cookie when submitting forms. This cookie is required for "

138 "security reasons, to ensure that your browser is not being "

139 "hijacked by third parties."

140 ),

141 "no_cookie2": _(

142 "If you have configured your browser to disable cookies, please "

143 "re-enable them, at least for this site, or for “same-origin” "

144 "requests."

145 ),

146 "DEBUG": settings.DEBUG,

147 "docs_version": get_docs_version(),

148 "more": _("More information is available with DEBUG=True."),

149 }

150 try:

151 t = loader.get_template(template_name)

152 except TemplateDoesNotExist:

153 if template_name == CSRF_FAILURE_TEMPLATE_NAME:

154 # If the default template doesn't exist, use the string template.

155 t = Engine().from_string(CSRF_FAILURE_TEMPLATE)

156 c = Context(c)

157 else:

158 # Raise if a developer-specified template doesn't exist.

159 raise

160 return HttpResponseForbidden(t.render(c), content_type="text/html")