providers/proxy: make upstream SSL Validation configurable

passbook/providers/proxy/api.py

@@ -54,6 +54,7 @@ class ProxyProviderSerializer(ModelSerializer):
             "name",
             "internal_host",
             "external_host",
+            "internal_host_ssl_validation",
             "certificate",
             "skip_path_regex",
         ]
@@ -89,6 +90,7 @@ class ProxyOutpostConfigSerializer(ModelSerializer):
             "name",
             "internal_host",
             "external_host",
+            "internal_host_ssl_validation",
             "client_id",
             "client_secret",
             "oidc_configuration",

passbook/providers/proxy/forms.py

@@ -33,6 +33,7 @@ class ProxyProviderForm(forms.ModelForm):
             "name",
             "authorization_flow",
             "internal_host",
+            "internal_host_ssl_validation",
             "external_host",
             "certificate",
             "skip_path_regex",

passbook/providers/proxy/migrations/0007_auto_20200923_1017.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.1.1 on 2020-09-23 10:17
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('passbook_providers_proxy', '0006_proxyprovider_skip_path_regex'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='proxyprovider',
+            name='internal_host_ssl_validation',
+            field=models.BooleanField(default=True, help_text='Validate SSL Certificates of upstream servers'),
+        ),
+        migrations.AlterField(
+            model_name='proxyprovider',
+            name='skip_path_regex',
+            field=models.TextField(blank=True, default='', help_text='Regular expressions for which authentication is not required. Each new line is interpreted as a new Regular Expression.'),
+        ),
+    ]

passbook/providers/proxy/models.py

@@ -46,15 +46,15 @@ class ProxyProvider(OutpostModel, OAuth2Provider):
     external_host = models.TextField(
         validators=[DomainlessURLValidator(schemes=("http", "https"))]
     )
-
-    cookie_secret = models.TextField(default=get_cookie_secret)
+    internal_host_ssl_validation = models.BooleanField(
+        default=True, help_text=_("Validate SSL Certificates of upstream servers"))
 
     skip_path_regex = models.TextField(
         default="",
         blank=True,
         help_text=_(
             (
-                "Regular expression for which authentication is not required. "
+                "Regular expressions for which authentication is not required. "
                 "Each new line is interpreted as a new Regular Expression."
             )
         ),
@@ -64,6 +64,8 @@ class ProxyProvider(OutpostModel, OAuth2Provider):
         CertificateKeyPair, on_delete=models.SET_NULL, null=True, blank=True,
     )
 
+    cookie_secret = models.TextField(default=get_cookie_secret)
+
     def form(self) -> Type[ModelForm]:
         from passbook.providers.proxy.forms import ProxyProviderForm
 

swagger.yaml

@@ -6215,6 +6215,10 @@ definitions:
         title: External host
         type: string
         minLength: 1
+      internal_host_ssl_validation:
+        title: Internal host ssl validation
+        description: Validate SSL Certificates of upstream servers
+        type: boolean
       client_id:
         title: Client ID
         type: string
@@ -6237,7 +6241,7 @@ definitions:
         x-nullable: true
       skip_path_regex:
         title: Skip path regex
-        description: Regular expression for which authentication is not required.
+        description: Regular expressions for which authentication is not required.
           Each new line is interpreted as a new Regular Expression.
         type: string
   Policy:
@@ -6700,6 +6704,10 @@ definitions:
         title: External host
         type: string
         minLength: 1
+      internal_host_ssl_validation:
+        title: Internal host ssl validation
+        description: Validate SSL Certificates of upstream servers
+        type: boolean
       certificate:
         title: Certificate
         type: string
@@ -6707,7 +6715,7 @@ definitions:
         x-nullable: true
       skip_path_regex:
         title: Skip path regex
-        description: Regular expression for which authentication is not required.
+        description: Regular expressions for which authentication is not required.
           Each new line is interpreted as a new Regular Expression.
         type: string
   SAMLProvider: