core sts endpoints completed

moto/sts/__init__.py

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+from .models import sts_backend
+mock_sts = sts_backend.decorator

moto/sts/models.py

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+import datetime
+from moto.core import BaseBackend
+from moto.core.utils import iso_8601_datetime
+
+
+class Token(object):
+    def __init__(self, duration):
+        now = datetime.datetime.now()
+        self.expiration = now + datetime.timedelta(seconds=duration)
+
+    @property
+    def expiration_ISO8601(self):
+        return iso_8601_datetime(self.expiration)
+
+
+class AssumedRole(object):
+    def __init__(self, role_session_name, role_arn, policy, duration, external_id):
+        self.session_name = role_session_name
+        self.arn = role_arn
+        self.policy = policy
+        now = datetime.datetime.now()
+        self.expiration = now + datetime.timedelta(seconds=duration)
+        self.external_id = external_id
+
+    @property
+    def expiration_ISO8601(self):
+        return iso_8601_datetime(self.expiration)
+
+
+class STSBackend(BaseBackend):
+    def get_session_token(self, duration):
+        token = Token(duration=duration)
+        return token
+
+    def assume_role(self, **kwargs):
+        role = AssumedRole(**kwargs)
+        return role
+
+sts_backend = STSBackend()

moto/sts/responses.py

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+from jinja2 import Template
+
+from moto.core.responses import BaseResponse
+from .models import sts_backend
+
+
+class TokenResponse(BaseResponse):
+
+    def get_session_token(self):
+        duration = int(self.querystring.get('DurationSeconds', [43200])[0])
+        token = sts_backend.get_session_token(duration=duration)
+        template = Template(GET_SESSION_TOKEN_RESPONSE)
+        return template.render(token=token)
+
+    def assume_role(self):
+        role_session_name = self.querystring.get('RoleSessionName')[0]
+        role_arn = self.querystring.get('RoleArn')[0]
+
+        policy = self.querystring.get('Policy', [None])[0]
+        duration = int(self.querystring.get('DurationSeconds', [3600])[0])
+        external_id = self.querystring.get('ExternalId', [None])[0]
+
+        role = sts_backend.assume_role(
+            role_session_name=role_session_name,
+            role_arn=role_arn,
+            policy=policy,
+            duration=duration,
+            external_id=external_id,
+        )
+        template = Template(ASSUME_ROLE_RESPONSE)
+        return template.render(role=role)
+
+
+GET_SESSION_TOKEN_RESPONSE = """<GetSessionTokenResponse xmlns="https://sts.amazonaws.com/doc/2011-06-15/">
+  <GetSessionTokenResult>
+    <Credentials>
+      <SessionToken>AQoEXAMPLEH4aoAH0gNCAPyJxz4BlCFFxWNE1OPTgk5TthT+FvwqnKwRcOIfrRh3c/LTo6UDdyJwOOvEVPvLXCrrrUtdnniCEXAMPLE/IvU1dYUg2RVAJBanLiHb4IgRmpRV3zrkuWJOgQs8IZZaIv2BXIa2R4OlgkBN9bkUDNCJiBeb/AXlzBBko7b15fjrBs2+cTQtpZ3CYWFXG8C5zqx37wnOE49mRl/+OtkIKGO7fAE</SessionToken>
+      <SecretAccessKey>wJalrXUtnFEMI/K7MDENG/bPxRfiCYzEXAMPLEKEY</SecretAccessKey>
+      <Expiration>{{ token.expiration_ISO8601 }}</Expiration>
+      <AccessKeyId>AKIAIOSFODNN7EXAMPLE</AccessKeyId>
+    </Credentials>
+  </GetSessionTokenResult>
+  <ResponseMetadata>
+    <RequestId>58c5dbae-abef-11e0-8cfe-09039844ac7d</RequestId>
+  </ResponseMetadata>
+</GetSessionTokenResponse>"""
+
+
+ASSUME_ROLE_RESPONSE = """<AssumeRoleResponse xmlns="https://sts.amazonaws.com/doc/
+2011-06-15/">
+  <AssumeRoleResult>
+    <Credentials>
+      <SessionToken>BQoEXAMPLEH4aoAH0gNCAPyJxz4BlCFFxWNE1OPTgk5TthT+FvwqnKwRcOIfrRh3c/LTo6UDdyJwOOvEVPvLXCrrrUtdnniCEXAMPLE/IvU1dYUg2RVAJBanLiHb4IgRmpRV3zrkuWJOgQs8IZZaIv2BXIa2R4OlgkBN9bkUDNCJiBeb/AXlzBBko7b15fjrBs2+cTQtpZ3CYWFXG8C5zqx37wnOE49mRl/+OtkIKGO7fAE</SessionToken>
+      <SecretAccessKey>aJalrXUtnFEMI/K7MDENG/bPxRfiCYzEXAMPLEKEY</SecretAccessKey>
+      <Expiration>{{ role.expiration_ISO8601 }}</Expiration>
+      <AccessKeyId>AKIAIOSFODNN7EXAMPLE</AccessKeyId>
+    </Credentials>
+    <AssumedRoleUser>
+      <Arn>{{ role.arn }}</Arn>
+      <AssumedRoleId>ARO123EXAMPLE123:{{ role.session_name }}</AssumedRoleId>
+    </AssumedRoleUser>
+    <PackedPolicySize>6</PackedPolicySize>
+  </AssumeRoleResult>
+  <ResponseMetadata>
+    <RequestId>c6104cbe-af31-11e0-8154-cbc7ccf896c7</RequestId>
+  </ResponseMetadata>
+</AssumeRoleResponse>"""

moto/sts/urls.py

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+from .responses import TokenResponse
+
+url_bases = [
+    "https?://sts.amazonaws.com"
+]
+
+url_paths = {
+    '{0}/$': TokenResponse().dispatch,
+}