Start work

.gitignore

@@ -8,3 +8,9 @@ wheels/
 
 # Virtual environments
 .venv
+
+# Terraform/Tofu
+examples/tofu/**/.terraform
+examples/tofu/**/.terraform.lock.hcl
+examples/tofu/**/.terraform.tfstate
+examples/tofu/**/.terraform.tfstate.backup

README.md

@@ -1 +1,7 @@
-Test
+# Private Compute Stack (Pieces)
+
+Pieces is a mostly API-compatible implementation of AWS services.
+
+## EC2
+
+A very small subset of EC2 functionality is implemented.

examples/tofu/cloudinit.yaml

@@ -6,3 +6,5 @@ users:
    groups: wheel
    plain_text_passwd: abc123
    sudo: ["ALL=(ALL) NOPASSWD:ALL"]
+   ssh_authorized_keys:
+     - ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDUz3WF4qPhk01//5QUuNWyHTn8shv86i/qEyRqa1kTF alexander@miku

examples/tofu/main.tf

@@ -0,0 +1,61 @@
+terraform {
+  required_providers {
+    aws = {
+      source = "hashicorp/aws"
+      version = "~> 5.0"
+    }
+  }
+}
+
+provider "aws" {
+  region = "eu-west-1"
+}
+
+# https://geo.mirror.pkgbuild.com/images/v20250315.322357/Arch-Linux-x86_64-cloudimg.qcow2
+# Import using:
+# aws ec2 import-image --disk-container "Url=https://geo.mirror.pkgbuild.com/images/v20250315.322357/Arch-Linux-x86_64-cloudimg.qcow2" --tag-specification 'Tags=[{Key="Linux",Value="ArchLinux-nocloud"}]'
+data "aws_ami" "archlinux-nocloud" {
+  filter {
+    name = "tag:Linux"
+    values = ["ArchLinux-nocloud"]
+  }
+}
+
+resource "aws_instance" "test-instance-1" {
+  ami = data.aws_ami.archlinux-nocloud.id
+  instance_type = "micro"
+  availability_zone = "az-1"
+
+  private_ip = "192.168.122.3"
+
+  user_data = file("cloudinit.yaml")
+
+  tags = {
+    UseCase = "k8s-control-plane"
+  }
+}
+
+# resource "aws_instance" "test-instance-2" {
+#   ami = "0c4dcaafb6a14dbb93b402f1fd6a9dfb"
+#   instance_type = "micro"
+#   availability_zone = "az-1"
+
+#   private_ip = "192.168.122.4"
+
+#   tags = {
+#     UseCase = "k8s-control-plane"
+#   }
+# }
+
+
+# resource "aws_instance" "test-instance-3" {
+#   ami = "0c4dcaafb6a14dbb93b402f1fd6a9dfb"
+#   instance_type = "micro"
+#   availability_zone = "az-1"
+
+#   private_ip = "192.168.122.5"
+
+#   tags = {
+#     UseCase = "k8s-control-plane"
+#   }
+# }

examples/tofu/terraform.tfstate

@@ -0,0 +1 @@
+{"version":4,"terraform_version":"1.9.0","serial":8,"lineage":"a013da38-6954-7573-33dd-c05f6b0ec61f","outputs":{},"resources":[{"mode":"managed","type":"aws_instance","name":"test-instance","provider":"provider[\"registry.opentofu.org/hashicorp/aws\"]","instances":[{"schema_version":1,"attributes":{"ami":"0c4dcaafb6a14dbb93b402f1fd6a9dfb","arn":"arn:aws:ec2:eu-west-1:1:instance/19b606d3c0b543c991f2b0cd632013a2","associate_public_ip_address":false,"availability_zone":"az-1","capacity_reservation_specification":[],"cpu_core_count":null,"cpu_options":[],"cpu_threads_per_core":null,"credit_specification":[],"disable_api_stop":false,"disable_api_termination":false,"ebs_block_device":[],"ebs_optimized":false,"enable_primary_ipv6":null,"enclave_options":[],"ephemeral_block_device":[],"get_password_data":false,"hibernation":null,"host_id":null,"host_resource_group_arn":null,"iam_instance_profile":"","id":"19b606d3c0b543c991f2b0cd632013a2","instance_initiated_shutdown_behavior":null,"instance_lifecycle":"","instance_market_options":[],"instance_state":"running","instance_type":"","ipv6_address_count":0,"ipv6_addresses":[],"key_name":"","launch_template":[],"maintenance_options":[],"metadata_options":[],"monitoring":null,"network_interface":[],"outpost_arn":"","password_data":"","placement_group":null,"placement_partition_number":null,"primary_network_interface_id":"","private_dns":"","private_dns_name_options":[],"private_ip":"","public_dns":"","public_ip":"","root_block_device":[],"secondary_private_ips":[],"security_groups":[],"source_dest_check":true,"spot_instance_request_id":"","subnet_id":"","tags":{"TestTag":"TestValue"},"tags_all":{"TestTag":"TestValue"},"tenancy":null,"timeouts":null,"user_data":null,"user_data_base64":null,"user_data_replace_on_change":false,"volume_tags":null,"vpc_security_group_ids":[]},"sensitive_attributes":[],"private":"eyJlMmJmYjczMC1lY2FhLTExZTYtOGY4OC0zNDM2M2JjN2M0YzAiOnsiY3JlYXRlIjo2MDAwMDAwMDAwMDAsImRlbGV0ZSI6MTIwMDAwMDAwMDAwMCwicmVhZCI6OTAwMDAwMDAwMDAwLCJ1cGRhdGUiOjYwMDAwMDAwMDAwMH0sInNjaGVtYV92ZXJzaW9uIjoiMSJ9"}]}],"check_results":null}

examples/tofu/terraform.tfstate.backup

@@ -0,0 +1 @@
+{"version":4,"terraform_version":"1.9.0","serial":7,"lineage":"a013da38-6954-7573-33dd-c05f6b0ec61f","outputs":{},"resources":[],"check_results":null}

pyproject.toml

@@ -6,6 +6,7 @@ readme = "README.md"
 authors = []
 requires-python = ">=3.13"
 dependencies = [
+    "cryptography>=44.0.2",
     "fastapi[standard]>=0.115.12",
     "libvirt-python>=11.1.0",
     "pydantic-xml>=2.14.3",
@@ -20,3 +21,8 @@ openec2 = "openec2:main"
 [build-system]
 requires = ["hatchling"]
 build-backend = "hatchling.build"
+
+[dependency-groups]
+dev = [
+    "ruff>=0.11.2",
+]

scripts/create-network-interface.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+ifId=$1
+cidr=$2
+broadcast=$3
+
+ip link add name "$ifId" type bridge
+ip addr add "$cidr" dev "$ifId" broadcast "$broadcast"
+ip link set dev "$ifId" up
+
+# TODO: NAT

src/openec2/actions/attach_volume.py

@@ -0,0 +1,90 @@
+import uuid
+import xml.etree.ElementTree as ET
+
+from fastapi import Response, HTTPException
+from fastapi.datastructures import QueryParams
+from sqlmodel import select
+import libvirt
+
+from openec2.api.attach_volume import AttachVolumeResponse
+from openec2.libvirt import LibvirtSingleton
+from openec2.utils.libvirt import instance_to_libvirt_xml
+from openec2.db.user import User
+from openec2.config import OpenEC2Config
+from openec2.db import DatabaseDep
+from openec2.db.instance import Instance, EBSVolume
+from openec2.utils.libvirt import ebs_volume_to_libvirt_xml
+
+
+def attach_volume(
+    params: QueryParams,
+    config: OpenEC2Config,
+    db: DatabaseDep,
+    user: User,
+):
+    device = params["Device"]
+    instance_id = params["InstanceId"]
+    volume_id = params["VolumeId"]
+
+    volume = db.exec(select(EBSVolume).where(EBSVolume.id == volume_id, Instance.owner_id == user.id)).first()
+    if volume is None:
+        return
+    instance = db.exec(select(Instance).where(Instance.id == instance_id, Instance.owner_id == user.id, Instance.terminated == False)).first()
+    if instance is None:
+        return
+
+    attached_volume_ids = [i.id for i in instance.ebs_volumes]
+    if volume_id in attached_volume_ids:
+        print("CANNOT ATTACH THE SAME VOLUME TO THE EC2 TWICE")
+        return
+
+    if not volume.multi_attach_enabled and volume.instances:
+        print("CANNOT ATTACH NON-MULTIATTACH again")
+        return
+
+    # Add the required data to libvirt
+    conn = LibvirtSingleton.of().connection
+    domain = conn.lookupByName(instance_id)
+
+    # Add the memory backing if required
+    running = domain.isActive()
+    if not instance.ebs_volumes:
+        if running:
+            raise HTTPException(
+                status_code=500,
+                detail="Instance is running",
+            )
+
+        # Update the instance
+        volume.instances.append(instance)
+
+        domain_xml = domain.XMLDesc()
+        domain_uuid = ET.fromstring(domain_xml).find("uuid").text
+
+        print(f"Updating XML for {instance.id} with {domain_uuid}")
+        instance_xml = instance_to_libvirt_xml(instance, config, domain_uuid)
+        print(instance_xml)
+        conn.defineXML(instance_xml)
+    else:
+        # Attach the device
+        volume.instances.append(instance)
+        domain.attachDeviceFlags(
+            ebs_volume_to_libvirt_xml(volume, config),
+            libvirt.VIR_DOMAIN_DEVICE_MODIFY_LIVE
+            if running
+            else libvirt.VIR_DOMAIN_DEVICE_MODIFY_CONFIG,
+        )
+
+    db.add(volume)
+    db.commit()
+
+    return Response(
+        AttachVolumeResponse(
+            requestId=uuid.uuid4().hex,
+            volumeId=volume_id,
+            instanceId=instance_id,
+            device=device,
+            status="attached",
+        ).to_xml(),
+        media_type="application/xml",
+    )

src/openec2/actions/create_tags.py

@@ -0,0 +1,51 @@
+from dataclasses import dataclass
+from typing import cast
+import uuid
+
+from fastapi import Response
+from fastapi.datastructures import QueryParams
+from sqlmodel import select
+
+from openec2.config import OpenEC2Config
+from openec2.db import DatabaseDep
+from openec2.db.user import User
+from openec2.db.instance import Instance
+from openec2.utils.array import parse_array_objects, parse_array_plain
+from openec2.api.create_tags import CreateTagsResponse
+
+
+@dataclass
+class Tag:
+    key: str
+    value: str
+
+
+def create_tags(
+    params: QueryParams,
+    config: OpenEC2Config,
+    db: DatabaseDep,
+    user: User,
+):
+    tags: dict[str, str] = {}
+    for tag in parse_array_objects("Tag", cast(dict, params)):
+        tags[tag["Key"]] = tag["Value"]
+
+    for instance_id in parse_array_plain("ResourceId", cast(dict, params)):
+        instance = db.exec(select(Instance).where(Instance.id == instance_id, Instance.owner_id == user.id, Instance.terminated == False)).first()
+        if instance is None:
+            print(f"Unknown instance {instance_id}")
+            continue
+        instance.tags = {
+            **instance.tags,
+            **tags,
+        }
+        print(instance)
+
+    db.commit()
+    return Response(
+        CreateTagsResponse(
+            requestId=uuid.uuid4().hex,
+            return_=True,
+        ).to_xml(),
+        media_type="application/xml",
+    )

src/openec2/actions/create_volume.py

@@ -0,0 +1,41 @@
+import uuid
+
+from fastapi import Response
+from fastapi.datastructures import QueryParams
+
+from openec2.config import OpenEC2Config
+from openec2.db import DatabaseDep
+from openec2.db.user import User
+from openec2.db.instance import EBSVolume
+from openec2.api.create_volume import CreateVolumeResponse
+
+
+def create_volume(
+    params: QueryParams,
+    config: OpenEC2Config,
+    db: DatabaseDep,
+    user: User,
+):
+    availabilityZone = params["AvailabilityZone"]
+
+    volume_id = f"vol-{uuid.uuid4().hex}"
+    volume = EBSVolume(
+        id=volume_id,
+        availability_zone=availabilityZone,
+        multi_attach_enabled=params.get("MultiAttachEnabled", "false") == "true",
+        owner_id=user.id,
+    )
+    volume.path(config).mkdir()
+
+    db.add(volume)
+    db.commit()
+
+    return Response(
+        CreateVolumeResponse(
+            requestId=uuid.uuid4().hex,
+            volumeId=volume_id,
+            availabilityZone=volume.availability_zone,
+            multiAttachEnabled=volume.multi_attach_enabled,
+        ).to_xml(),
+        media_type="application/xml",
+    )

src/openec2/actions/create_vpc.py

@@ -0,0 +1,33 @@
+from fastapi import Response, HTTPException
+from fastapi.datastructures import QueryParams
+from sqlmodel import select
+
+from openec2.db.user import User
+from openec2.config import OpenEC2Config
+from openec2.db import DatabaseDep
+from openec2.db.vpc import VPC
+from openec2.network.vpc import prepare_host_vpc
+
+
+def create_vpc(
+    params: QueryParams,
+    config: OpenEC2Config,
+    db: DatabaseDep,
+    user: User,
+):
+    # TODO: Check if it already exists
+    cidr_block = params["CidrBlock"]
+    vpcs = db.exec(select(VPC)).all()
+    max_interface_num = max(v.bridge_num for v in vpcs) if vpcs else 0
+
+    # Create the VPC
+    vpc = VPC(
+        bridge_num=max_interface_num + 1,
+        cidr=cidr_block,
+        owner_id=user.id,
+        default=False,
+    )
+    prepare_host_vpc(vpc)
+
+    db.add(vpc)
+    db.commit()

src/openec2/actions/deregister_image.py

@@ -4,19 +4,26 @@ from sqlmodel import select
 
 from openec2.config import OpenEC2Config
 from openec2.db import DatabaseDep
+from openec2.db.user import User
 from openec2.db.image import AMI
 from openec2.images import garbage_collect_image
 
+
 def deregister_image(
     params: QueryParams,
     config: OpenEC2Config,
     db: DatabaseDep,
+    user: User,
 ):
     image_id = params["ImageId"]
     ami = db.exec(select(AMI).where(AMI.id == image_id)).one()
     if ami is None:
         raise HTTPException(status_code=404, detail="Unknown AMI")
 
+    # Check if the requester can deregister the image.
+    if ami.owner_id != user.id:
+        raise HTTPException(status_code=403)
+
     # Mark the image as deregistered
     ami.deregistered = True
     db.add(ami)

src/openec2/actions/describe_images.py

@@ -1,4 +1,6 @@
 import uuid
+from typing import cast
+from dataclasses import dataclass
 
 from fastapi import Response
 from fastapi.datastructures import QueryParams
@@ -6,31 +8,66 @@ from sqlmodel import select
 
 from openec2.config import OpenEC2Config
 from openec2.db import DatabaseDep
+from openec2.db.user import User
 from openec2.db.image import AMI
-from openec2.api.describe_images import DescribeImagesResponse, ImagesSet, Image
+from openec2.api.describe_images import DescribeImagesResponse, Image
+from openec2.api.shared import Tag
+from openec2.utils.array import parse_array_objects, parse_array_plain
+
+
+@dataclass
+class Filter:
+    name: str
+    values: list[str]
+
+    def match(self, image: AMI) -> bool:
+        value: str | None
+        if self.name.startswith("tag:"):
+            value = image.tags.get(self.name.replace("tag:", ""))
+        else:
+            raise Exception(f"Unknown filter name {self.name}")
+
+        return value in self.values
 
 
 def describe_images(
     params: QueryParams,
     config: OpenEC2Config,
     db: DatabaseDep,
+    user: User,
 ):
+    filters: list[Filter] = []
+    for filter in parse_array_objects("Filter", cast(dict, params)):
+        filters.append(
+            Filter(
+                name=filter["Name"],
+                values=parse_array_plain("Value", filter),
+            )
+        )
+
     images: list[Image] = []
-    for ami in db.exec(select(AMI)).all():
+    for ami in db.exec(select(AMI).where(AMI.owner_id == user.id)).all():
+        if not all(f.match(ami) for f in filters):
+            continue
+
         images.append(
             Image(
                 imageId=ami.id,
                 imageState="available",
                 name=ami.originalFilename,
+                tagSet=[
+                    Tag(
+                        key=key,
+                        value=value,
+                    ) for key, value in ami.tags.items()
+                ],
             ),
         )
 
     return Response(
         DescribeImagesResponse(
             requestId=uuid.uuid4().hex,
-            imagesSet=ImagesSet(
+            imagesSet=images,
-                items=images,
-            )
         ).to_xml(),
         media_type="application/xml",
     )

src/openec2/actions/describe_instance_attribute.py

@@ -0,0 +1,43 @@
+import uuid
+
+from fastapi import Response, HTTPException
+from fastapi.datastructures import QueryParams
+from sqlmodel import select
+
+from openec2.config import OpenEC2Config
+from openec2.db import DatabaseDep
+from openec2.db.user import User
+from openec2.db.instance import Instance
+from openec2.api.describe_instance_attribute import DescribeInstanceAttributeResponse, InstanceInitiatedShutdownBehaviour, DisableApiTermination, DisableApiStop
+
+
+def describe_instance_attribute(
+    params: QueryParams,
+    config: OpenEC2Config,
+    db: DatabaseDep,
+    user: User,
+):
+    instance_id = params["InstanceId"]
+    attribute = params["Attribute"]
+    instance = db.exec(select(Instance).where(Instance.id == instance_id, Instance.owner_id == user.id, Instance.terminated == False)).first()
+    if instance is None:
+        raise HTTPException(
+            status_code=404,
+        )
+
+    return Response(
+        DescribeInstanceAttributeResponse(
+            requestId=uuid.uuid4().hex,
+            instanceId=instance.id,
+            instanceInitiatedShutdownBehaviour=InstanceInitiatedShutdownBehaviour(
+                value="stop",
+            ) if attribute == "instanceInitiatedShutdownBehaviour" else None,
+            disableApiTermination=DisableApiTermination(
+                value="false",
+            ) if attribute == "disableApiTermination" else None,
+            disableApiStop=DisableApiStop(
+                value="false",
+            ) if attribute == "disableApiStop" else None,
+        ).to_xml(),
+        media_type="application/xml",
+    )

src/openec2/actions/describe_instance_types.py

@@ -0,0 +1,35 @@
+import uuid
+
+from fastapi import Response
+from fastapi.datastructures import QueryParams
+from sqlmodel import select
+
+from openec2.config import OpenEC2Config
+from openec2.db import DatabaseDep
+from openec2.db.user import User
+from openec2.db.instance import Instance
+from openec2.api.describe_instance_types import DescribeInstanceTypesResponse, InstanceTypeInfo
+
+
+def describe_instance_types(
+    params: QueryParams,
+    config: OpenEC2Config,
+    db: DatabaseDep,
+    user: User,
+):
+    response: list[InstanceTypeInfo] = []
+    for name, instanceConfig in config.instances.types.items():
+        response.append(
+            InstanceTypeInfo(
+                instanceType=name,
+            ),
+        )
+
+    return Response(
+        DescribeInstanceTypesResponse(
+            requestId=uuid.uuid4().hex,
+            instanceTypeSet=response,
+            nextToken=None,
+        ).to_xml(),
+        media_type="application/xml",
+    )

src/openec2/actions/describe_instances.py

@@ -1,37 +1,87 @@
 import uuid
+from typing import cast
+import datetime
 
 from fastapi import Response
 from fastapi.datastructures import QueryParams
-from sqlmodel import select
+from sqlmodel import select, or_
 
 from openec2.libvirt import LibvirtSingleton
-from openec2.api.describe_instances import InstanceDescription, DescribeInstancesResponse, DescribeInstancesResponseReservationSet, describe_instance
+from openec2.api.describe_instances import (
-from openec2.api.shared import InstanceState
+    InstanceDescription,
+    DescribeInstancesResponse,
+    ReservationSet,
+    InstanceState,
+    describe_instance,
+)
+from openec2.api.shared import Tag
+from openec2.db.user import User
 from openec2.config import OpenEC2Config
 from openec2.db import DatabaseDep
 from openec2.db.instance import Instance
+from openec2.utils.array import parse_array_plain
+
 
 def describe_instances(
     params: QueryParams,
     config: OpenEC2Config,
     db: DatabaseDep,
+    user: User,
 ):
+    if "InstanceId.1" in params:
+        instance_ids = parse_array_plain("InstanceId", cast(dict, params))
+        instance_expr = [Instance.id == instance_id for instance_id in instance_ids]
+        instances = db.exec(
+            select(Instance).where(Instance.owner_id == user.id, or_(*instance_expr)),
+        ).all()
+    else:
+        instances = db.exec(
+            select(Instance).where(Instance.owner_id == user.id),
+        ).all()
+
     response_items: list[InstanceDescription] = []
     conn = LibvirtSingleton.of().connection
-    for instance in db.exec(select(Instance)).all():
+    now = datetime.datetime.now()
-        dom = conn.lookupByName(instance.id)
+    for instance in instances:
-        running = dom.isActive()
+        # Include terminated instances for an hour
+        if instance.terminated:
+            assert instance.terminationDate is not None
+            if now <= instance.terminationDate + datetime.timedelta(hours=1):
+                response_items.append(
+                    InstanceDescription(
+                        instanceId=instance.id,
+                        imageId=instance.imageId,
+                        instanceState=InstanceState(
+                            code=48,
+                            name="terminated",
+                        ),
+                        privateIpAddress=instance.privateIPv4,
+                        tagSet=[
+                            Tag(
+                                key=key,
+                                value=value,
+                            )
+                            for key, value in instance.tags.items()
+                        ],
+                    ),
+                )
+            continue
 
+        dom = conn.lookupByName(instance.id)
         response_items.append(
             describe_instance(instance, dom),
         )
 
     return Response(
         DescribeInstancesResponse(
-            request_id=uuid.uuid4().hex,
+            requestId=uuid.uuid4().hex,
-            reservation_set=DescribeInstancesResponseReservationSet(
+            reservationSet=[
-                item=response_items,
+                ReservationSet(
-            ),
+                    reservationId=instance.instanceId,
+                    instancesSet=[instance],
+                )
+                for instance in response_items
+            ],
         ).to_xml(),
         media_type="application/xml",
     )

src/openec2/actions/describe_tags.py

@@ -0,0 +1,99 @@
+from typing import Literal, cast
+from dataclasses import dataclass
+import uuid
+
+from fastapi import Response
+from fastapi.datastructures import QueryParams
+from sqlmodel import select
+
+from openec2.config import OpenEC2Config
+from openec2.db import DatabaseDep
+from openec2.db.user import User
+from openec2.db.instance import Instance
+from openec2.api.describe_tags import DescribeTagsResponse, TagDescription
+from openec2.utils.array import parse_array_objects, parse_array_plain, find
+
+
+@dataclass
+class Filter:
+    name: Literal["resource-id"] | Literal["resource-type"] | Literal["key"] | str
+    values: list[str]
+
+    def match(self, instance: Instance) -> bool:
+        if self.name not in instance.tags:
+            return False
+
+        value: str | None
+        if self.name == "resource-type":
+            value = "instance"
+        elif self.name == "resource-id":
+            value = instance.id
+        elif self.name == "key":
+            return any(key in instance.tags for key in self.values)
+        elif self.name.startswith("tag:"):
+            value = instance.tags.get(self.name.replace("tag:", ""))
+        else:
+            raise Exception(f"Unknown filter name {self.name}")
+
+        return value in self.values
+
+    def value(self, instance: Instance) -> TagDescription:
+        if self.name == "resource-type":
+            return TagDescription(resourceType="instance")
+        elif self.name == "resource-id":
+            return TagDescription(resourceId=instance.id)
+        elif self.name == "key":
+            key_name = find(
+                self.values,
+                lambda x: x in instance.tags,
+            )
+            assert key_name is not None
+
+            key_value = instance.tags[key_name]
+
+            return TagDescription(
+                key=key_name,
+                value=key_value,
+            )
+        elif self.name.startswith("tag:"):
+            tag = self.name.replace("tag:", "")
+            return TagDescription(
+                key=tag,
+                value=instance.tags[tag],
+            )
+        else:
+            raise Exception(f"Unknown filter name {self.name}")
+
+def describe_tags(
+    params: QueryParams,
+    config: OpenEC2Config,
+    db: DatabaseDep,
+    user: User,
+):
+    filters: list[Filter] = []
+    for filter in parse_array_objects("Filter", cast(dict, params)):
+        filters.append(
+            Filter(
+                name=filter["Name"],
+                values=parse_array_plain("Values", filter),
+            )
+        )
+
+    response: list[TagDescription] = []
+    for instance in db.exec(select(Instance).where(Instance.owner_id == user.id)).all():
+        filter = find(
+            filters,
+            lambda f: f.match(instance),
+        )
+        if filter is None:
+            continue
+        response.append(filter.value(instance))
+
+    return Response(
+        DescribeTagsResponse(
+            requestId=uuid.uuid4().hex,
+            nextToken=None,
+            tagSet=response,
+        ).to_xml(),
+        media_type="application/xml",
+    )

src/openec2/actions/describe_volumes.py

@@ -0,0 +1,35 @@
+import uuid
+
+from sqlmodel import select
+from fastapi import Response
+
+from openec2.db import DatabaseDep
+from openec2.config import OpenEC2Config
+from fastapi.datastructures import QueryParams
+from openec2.db.user import User
+from openec2.db.instance import EBSVolume
+from openec2.api.describe_volumes import DescribeVolumesResponse, VolumeSet, Volume
+
+
+def describe_volumes(
+    params: QueryParams,
+    config: OpenEC2Config,
+    db: DatabaseDep,
+    user: User,
+):
+    volumes = db.exec(select(EBSVolume).where(EBSVolume.owner_id == user.id)).all()
+    return Response(
+        DescribeVolumesResponse(
+            requestId=uuid.uuid4().hex,
+            volumeSet=VolumeSet(
+                item=[
+                    Volume(
+                        volumeId=volume.id,
+                        multiAttachEnabled=volume.multi_attach_enabled,
+                    )
+                    for volume in volumes
+                ],
+            ),
+        ).to_xml(),
+        media_type="application/xml",
+    )

src/openec2/actions/detach_volume.py

@@ -0,0 +1,61 @@
+import uuid
+
+import libvirt
+from sqlmodel import select
+from fastapi import Response
+from fastapi.datastructures import QueryParams
+
+from openec2.libvirt import LibvirtSingleton
+from openec2.config import OpenEC2Config
+from openec2.db import DatabaseDep
+from openec2.db.user import User
+from openec2.db.instance import Instance, EBSVolume
+from openec2.api.detach_volume import DetachVolumeResponse
+from openec2.utils.libvirt import ebs_volume_to_libvirt_xml
+
+
+def detach_volume(
+    params: QueryParams,
+    config: OpenEC2Config,
+    db: DatabaseDep,
+    user: User,
+):
+    instance_id = params["InstanceId"]
+    volume_id = params["VolumeId"]
+
+    # Find the instance
+    instance = db.exec(
+        select(Instance).where(Instance.id == instance_id, Instance.owner_id == user.id)
+    ).first()
+    if instance is None:
+        return
+
+    # Find the volume
+    volume = db.exec(
+        select(EBSVolume).where(
+            EBSVolume.id == volume_id, EBSVolume.owner_id == user.id
+        )
+    ).first()
+    if volume is None:
+        return
+    if instance_id not in [i.id for i in volume.instances]:
+        return
+
+    # Remove the volume from the instance
+    domain = LibvirtSingleton.of().connection.lookupByName(instance_id)
+    domain.detachDeviceFlags(
+        ebs_volume_to_libvirt_xml(volume, config),
+        libvirt.VIR_DOMAIN_DEVICE_MODIFY_LIVE
+        if domain.isActive()
+        else libvirt.VIR_DOMAIN_DEVICE_MODIFY_CONFIG,
+    )
+
+    return Response(
+        DetachVolumeResponse(
+            requestId=uuid.uuid4().hex,
+            volumeId=volume_id,
+            instanceId=instance_id,
+            status="detached",
+        ).to_xml(),
+        media_type="application/xml",
+    )

src/openec2/actions/get_caller_identity.py

@@ -0,0 +1,30 @@
+import uuid
+
+from fastapi import Response
+from fastapi.datastructures import QueryParams
+
+from openec2.config import OpenEC2Config
+from openec2.db import DatabaseDep
+from openec2.db.user import User
+from openec2.api.get_caller_identity import GetCallerIdentityResponse, GetCallerIdentityResult, ResponseMetadata
+
+
+def get_caller_identity(
+    params: QueryParams,
+    config: OpenEC2Config,
+    db: DatabaseDep,
+    user: User,
+):
+    return Response(
+        GetCallerIdentityResponse(
+            result=GetCallerIdentityResult(
+                arn=f"arn:aws:iam::{user.id}:user/{user.name}",
+                user_id=str(user.id),
+                account=str(user.id),
+            ),
+            metadata=ResponseMetadata(
+                request_id=uuid.uuid4().hex,
+            ),
+        ).to_xml(),
+        media_type="application/xml",
+    )

src/openec2/actions/import_image.py

@@ -4,22 +4,28 @@ from urllib.parse import urlparse
 import uuid
 import shutil
 
+from fastapi import HTTPException
 from fastapi.datastructures import QueryParams
 import requests
 
-from openec2.config import OpenEC2Config
+from openec2.config import OpenEC2Config, ConfigSingleton
 from openec2.db import DatabaseDep
+from openec2.db.user import User
 from openec2.db.image import AMI
+from openec2.utils.array import parse_tag_specification
+
 
 def import_image(
     params: QueryParams,
     config: OpenEC2Config,
     db: DatabaseDep,
+    user: User,
 ):
     first_disk_image_url = params["DiskContainer.1.Url"]
     url = urlparse(first_disk_image_url)
     ami_id = uuid.uuid4().hex
 
+    tags: dict[str, str] = parse_tag_specification(cast(dict, params))
     imageLocation = cast(Path, config.images)
     imageLocation.mkdir(exist_ok=True)
     dst = imageLocation / ami_id
@@ -32,6 +38,11 @@ def import_image(
                     for chunk in r.iter_content(8196):
                         f.write(chunk)
         case "file":
+            if not ConfigSingleton.of().config.debug:
+                raise HTTPException(
+                    status_code=400,
+                    detail="Unsupported scheme",
+                )
             shutil.copy(
                 url.path,
                 str(dst),
@@ -44,7 +55,9 @@ def import_image(
             id=ami_id,
             description=None,
             originalFilename=filename,
-        )
+            owner_id=user.id,
+            tags=tags,
+        ),
     )
     db.commit()
     return ami_id

src/openec2/actions/run_instances.py

@@ -2,7 +2,7 @@ import base64
 from typing import cast
 import uuid
 
-from fastapi import HTTPException
+from fastapi import HTTPException, Response
 from fastapi.datastructures import QueryParams
 from sqlmodel import select
 
@@ -12,12 +12,18 @@ from openec2.utils.qemu import create_cow_copy
 from openec2.db import DatabaseDep
 from openec2.db.instance import Instance
 from openec2.db.image import AMI
+from openec2.db.user import User
 from openec2.api.run_instances import RunInstanceResponse, RunInstanceInstanceSet
 from openec2.api.describe_instances import describe_instance
 from openec2.utils.array import parse_array_objects
-from openec2.ipam import get_available_ipv4, is_ipv4_available, add_instance_dhcp_mapping
+from openec2.ipam import (
+    get_available_ipv4,
+    is_ipv4_available,
+    add_instance_dhcp_mapping,
+)
 from openec2.utils.ip import generate_available_mac
 
+
 def create_libvirt_domain(
     name: str,
     memory: int,
@@ -84,17 +90,19 @@ def create_libvirt_domain(
 </domain>
 """
 
+
 def run_instances(
     params: QueryParams,
     config: OpenEC2Config,
     db: DatabaseDep,
+    user: User,
 ):
     image_id = params["ImageId"]
-    instance_type = params["InstanceType"]
+    instance_type_name = params["InstanceType"]
 
-    instance_type = config.instances.types.get(params["InstanceType"])
+    instance_type = config.instances.types.get(instance_type_name)
     if instance_type is None:
-        raise Exception(f"Unknown instance type {params["InstanceType"]}")
+        raise Exception(f"Unknown instance type {params['InstanceType']}")
 
     ami = db.exec(select(AMI).where(AMI.id == image_id)).first()
     if ami is None:
@@ -107,11 +115,11 @@ def run_instances(
         )
 
     # Parse tags
-    # TODO: broken
     tags: dict[str, str] = {}
     for spec in parse_array_objects("TagSpecification", cast(dict, params)):
         for raw_tag in parse_array_objects("Tag", spec):
             tags[raw_tag["Key"]] = raw_tag["Value"]
+    print(f"Creating with tags {tags}")
 
     # Get a private IPv4
     instance_id = uuid.uuid4().hex
@@ -140,9 +148,15 @@ def run_instances(
         id=instance_id,
         imageId=image_id,
         tags=tags,
-        userData=base64.b64decode(value).decode() if (value := params.get("UserData")) is not None else None,
+        userData=base64.b64decode(value).decode()
+        if (value := params.get("UserData")) is not None
+        else None,
         privateIPv4=private_ipv4,
         interfaceMac=mac,
+        instanceType=instance_type_name,
+        owner_id=user.id,
+        terminated=False,
+        terminationDate=None,
     )
     db.add(instance)
     print("Inserted new instance")
@@ -161,9 +175,12 @@ def run_instances(
     description = describe_instance(instance, domain)
 
     db.commit()
-    return RunInstanceResponse(
+    return Response(
+        RunInstanceResponse(
             request_id=uuid.uuid4().hex,
-        instance_set=RunInstanceInstanceSet(
+            instancesSet=RunInstanceInstanceSet(
                 item=[description],
             ),
-    ).to_xml()
+        ).to_xml(),
+        media_type="application/xml",
+    )

src/openec2/actions/start_instances.py

@@ -1,6 +1,6 @@
 import uuid
 
-from fastapi import HTTPException
+from fastapi import HTTPException, Response
 from fastapi.datastructures import QueryParams
 from sqlmodel import select
 
@@ -8,48 +8,51 @@ from openec2.libvirt import LibvirtSingleton
 from openec2.config import OpenEC2Config
 from openec2.db import DatabaseDep
 from openec2.db.instance import Instance
+from openec2.db.user import User
 from openec2.utils.array import parse_array_plain
-from openec2.api.start_instances import InstanceState, StartInstancesResponseInstancesSetInstance, StartInstancesResponse, StartInstancesResponseInstancesSet
+from openec2.api.shared import InstanceInfo, InstancesSet
+from openec2.api.describe_instances import describe_instance_state
+from openec2.api.start_instances import StartInstancesResponse
 
 
 def start_instances(
     params: QueryParams,
     config: OpenEC2Config,
     db: DatabaseDep,
+    user: User,
 ):
     conn = LibvirtSingleton.of().connection
-    instances: list[StartInstancesResponseInstancesSetInstance] = []
+    instances: list[InstanceInfo] = []
     for instance_id in parse_array_plain("InstanceId", params):
-        instance = db.exec(select(Instance).where(Instance.id == instance_id)).first()
+        instance = db.exec(select(Instance).where(Instance.id == instance_id, Instance.terminated == False)).first()
         if instance is None:
             raise HTTPException(status_code=404, detail="Unknown instance")
 
-        dom = conn.lookupByName(instance_id)
+        # Check for permission issues
+        if instance.owner_id != user.id:
+            # TODO: Add the error to the response
+            continue
 
-        running = dom.isActive()
+        dom = conn.lookupByName(instance_id)
-        prev_state = InstanceState(
+        prev_state = describe_instance_state(dom)
-            code=16 if running else 80,
-            name="running" if running else "stopped",
-        )
         if not dom.isActive():
             dom.create()
-        running = dom.isActive()
+        current_state = describe_instance_state(dom)
-        current_state = InstanceState(
-            code=16 if running else 80,
-            name="running" if running else "stopped",
-        )
 
         instances.append(
-            StartInstancesResponseInstancesSetInstance(
+            InstanceInfo(
-                instance_id=instance_id,
+                instanceId=instance_id,
-                previous_state=prev_state,
+                previousState=prev_state,
-                current_state=current_state,
+                currentState=current_state,
             ),
         )
 
-    return StartInstancesResponse(
+    return Response(
+        StartInstancesResponse(
             request_id=uuid.uuid4().hex,
-        instances_set=StartInstancesResponseInstancesSet(
+            instancesSet=InstancesSet(
                 item=instances,
             ),
-    ).to_xml()
+        ).to_xml(),
+        media_type="application/xml",
+    )

src/openec2/actions/stop_instances.py

@@ -1,6 +1,6 @@
 import uuid
 
-from fastapi import HTTPException
+from fastapi import HTTPException, Response
 from fastapi.datastructures import QueryParams
 from sqlmodel import select
 
@@ -8,48 +8,53 @@ from openec2.libvirt import LibvirtSingleton
 from openec2.config import OpenEC2Config
 from openec2.db import DatabaseDep
 from openec2.db.instance import Instance
+from openec2.db.user import User
 from openec2.utils.array import parse_array_plain
-from openec2.api.shared import InstanceState
+from openec2.api.shared import InstanceInfo, InstancesSet
-from openec2.api.stop_instances import StopInstancesResponse, StopInstancesResponseInstancesSet, StopInstancesResponseInstancesSetInstance
+from openec2.api.describe_instances import describe_instance_state
+from openec2.api.stop_instances import StopInstancesResponse
 
 
 def stop_instances(
     params: QueryParams,
     config: OpenEC2Config,
     db: DatabaseDep,
+    user: User,
 ):
     conn = LibvirtSingleton.of().connection
-    instances: list[StopInstancesResponseInstancesSetInstance] = []
+    instances: list[InstanceInfo] = []
     for instance_id in parse_array_plain("InstanceId", params):
-        instance = db.exec(select(Instance).where(Instance.id == instance_id)).first()
+        instance = db.exec(select(Instance).where(Instance.id == instance_id, Instance.terminated == False)).first()
         if instance is None:
             raise HTTPException(status_code=404, detail="Unknown instance")
 
+        # Check for permission issues
+        if instance.owner_id != user.id:
+            # TODO: Add the error to the response
+            continue
+
         dom = conn.lookupByName(instance_id)
         running = dom.isActive()
-        prev_state = InstanceState(
+        prev_state = describe_instance_state(dom)
-            code=16 if running else 80,
-            name="running" if running else "stopped",
-        )
         if running:
             dom.shutdown()
         running = dom.isActive()
-        current_state = InstanceState(
+        current_state = describe_instance_state(dom)
-            code=16 if running else 80,
-            name="running" if running else "stopped",
-        )
 
         instances.append(
-            StopInstancesResponseInstancesSetInstance(
+            InstanceInfo(
-                instance_id=instance_id,
+                instanceId=instance_id,
-                previous_state=prev_state,
+                previousState=prev_state,
-                current_state=current_state,
+                currentState=current_state,
             ),
         )
 
-    return StopInstancesResponse(
+    return Response(
-        request_id=uuid.uuid4().hex,
+        StopInstancesResponse(
-        instances_set=StopInstancesResponseInstancesSet(
+            requestId=uuid.uuid4().hex,
+            instancesSet=InstancesSet(
                 item=instances,
             ),
-    ).to_xml()
+        ).to_xml(),
+        media_type="application/xml",
+    )

src/openec2/actions/terminate_instances.py

@@ -1,6 +1,9 @@
 import logging
+from typing import cast
+import uuid
+import datetime
 
-from fastapi import HTTPException
+from fastapi import Response
 from fastapi.datastructures import QueryParams
 from sqlmodel import select
 
@@ -8,38 +11,65 @@ from openec2.libvirt import LibvirtSingleton
 from openec2.config import OpenEC2Config
 from openec2.db import DatabaseDep
 from openec2.db.instance import Instance
+from openec2.db.user import User
 from openec2.utils.array import parse_array_plain
 from openec2.images import garbage_collect_image
 from openec2.ipam import remove_instance_dhcp_mapping
+from openec2.api.shared import InstanceInfo
+from openec2.api.describe_instances import describe_instance_state
+from openec2.api.terminate_instances import TerminateInstancesResponse, InstancesSet
 
 
 logger = logging.getLogger()
 
+
 def terminate_instances(
     params: QueryParams,
     config: OpenEC2Config,
     db: DatabaseDep,
+    user: User,
 ):
+    instances: list[InstanceInfo] = []
     conn = LibvirtSingleton.of().connection
     image_ids: set[str] = set()
     for instance_id in parse_array_plain("InstanceId", params):
-        instance = db.exec(select(Instance).where(Instance.id == instance_id)).first()
+        instance = db.exec(select(Instance).where(Instance.id == instance_id, Instance.owner_id == user.id)).first()
         if instance is None:
-            raise HTTPException(status_code=404, detail="Unknown instance")
+            continue
+            # raise HTTPException(status_code=404, detail="Unknown instance")
 
         dom = conn.lookupByName(instance_id)
+        prev_state = describe_instance_state(dom)
         if dom.isActive():
             dom.shutdown()
+        current_state = describe_instance_state(dom)
         dom.undefine()
 
+        instances.append(
+            InstanceInfo(
+                instanceId=instance.id,
+                currentState=current_state,
+                previousState=prev_state,
+            ),
+        )
+
         # Delete files
         logger.debug(f"Removing {config.instances.location / instance_id}")
         instance_disk = config.instances.location / instance_id
         instance_disk.unlink()
 
-        image_ids.add(instance.imageId)
+        for volume in instance.ebs_volumes:
-        remove_instance_dhcp_mapping(instance.id, instance.interfaceMac, instance.privateIPv4, db)
+            volume.instances.remove(instance)
-        db.delete(instance)
+
+
+        image_ids.add(cast(str, instance.imageId))
+        remove_instance_dhcp_mapping(
+            instance.id, instance.interfaceMac, instance.privateIPv4, db
+        )
+
+        # Mark the instance as terminated
+        instance.terminated = True
+        instance.terminationDate = datetime.datetime.now()
 
     db.commit()
 
@@ -47,4 +77,12 @@ def terminate_instances(
     for image_id in image_ids:
         garbage_collect_image(image_id, db)
 
-    return "OK"
+    return Response(
+        TerminateInstancesResponse(
+            requestId=uuid.uuid4().hex,
+            instancesSet=InstancesSet(
+                item=instances,
+            ),
+        ).to_xml(),
+        media_type="application/xml",
+    )

src/openec2/api/attach_volume.py

@@ -0,0 +1,17 @@
+from pydantic_xml import BaseXmlModel, element
+
+
+class AttachVolumeResponse(
+    BaseXmlModel,
+    tag="AttachVolumeResponse",
+    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"},
+):
+    requestId: str = element()
+
+    volumeId: str = element()
+
+    instanceId: str = element()
+
+    device: str = element()
+
+    status: str = element()

src/openec2/api/create_tags.py

@@ -0,0 +1,10 @@
+from pydantic_xml import BaseXmlModel, element
+
+
+class CreateTagsResponse(
+    BaseXmlModel,
+    nsmap={"": ""},
+):
+    requestId: str = element()
+
+    return_: bool = element(tag="return")

src/openec2/api/create_volume.py

@@ -0,0 +1,15 @@
+from pydantic_xml import BaseXmlModel, element
+
+
+class CreateVolumeResponse(
+    BaseXmlModel,
+    tag="CreateVolumeResponse",
+    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"},
+):
+    requestId: str = element()
+
+    volumeId: str = element()
+
+    availabilityZone: str = element()
+
+    multiAttachEnabled: bool = element()

src/openec2/api/create_vpc.py

@@ -0,0 +1 @@
+from pydantic_xml import BaseXmlModel, wrapped, element

src/openec2/api/describe_images.py

@@ -1,4 +1,7 @@
-from pydantic_xml import BaseXmlModel, element
+from pydantic_xml import BaseXmlModel, wrapped, element
+
+from openec2.api.shared import Tag
+
 
 class Image(BaseXmlModel):
     imageId: str = element()
@@ -7,14 +10,14 @@ class Image(BaseXmlModel):
 
     name: str = element()
 
-class ImagesSet(BaseXmlModel, tag="imagesSet"):
+    tagSet: list[Tag] = wrapped("tagSet", element(tag="item"))
-    items: list[Image] = element(tag="item")
+
 
 class DescribeImagesResponse(
     BaseXmlModel,
     tag="DescribeImagesResponse",
-    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"}
+    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"},
 ):
     requestId: str = element()
 
-    imagesSet: ImagesSet = element()
+    imagesSet: list[Image] = wrapped("imagesSet", element(tag="item"))

src/openec2/api/describe_instance_attribute.py

@@ -0,0 +1,26 @@
+from pydantic_xml import BaseXmlModel, element
+
+
+class InstanceInitiatedShutdownBehaviour(BaseXmlModel):
+    value: str = element()
+
+class DisableApiTermination(BaseXmlModel):
+    value: str = element()
+
+class DisableApiStop(BaseXmlModel):
+    value: str = element()
+
+class DescribeInstanceAttributeResponse(
+    BaseXmlModel,
+    tag="DescribeInstanceAttributeResponse",
+    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"},
+):
+    requestId: str = element()
+
+    instanceId: str = element()
+
+    instanceInitiatedShutdownBehaviour: InstanceInitiatedShutdownBehaviour | None = element(defaut=None)
+
+    disableApiTermination: DisableApiTermination | None = element(default=None)
+
+    disableApiStop: DisableApiStop | None = element(default=None)

src/openec2/api/describe_instance_types.py

@@ -0,0 +1,18 @@
+from pydantic_xml import BaseXmlModel, element, wrapped
+
+
+class InstanceTypeInfo(BaseXmlModel, tag="item"):
+    instanceType: str = element()
+
+class DescribeInstanceTypesResponse(
+    BaseXmlModel,
+    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"},
+):
+    requestId: str = element()
+
+    instanceTypeSet: list[InstanceTypeInfo] = wrapped(
+        "instanceTypeSet",
+        element(tag="item"),
+    )
+
+    nextToken: str | None = element()

src/openec2/api/describe_instances.py

@@ -1,56 +1,55 @@
-from pydantic_xml import BaseXmlModel, element
+from pydantic_xml import BaseXmlModel, wrapped, element
 import libvirt
 
 from openec2.db.instance import Instance
-from openec2.api.shared import InstanceState
+from openec2.api.shared import InstanceState, Tag
-
-
-class InstanceTag(BaseXmlModel):
-    key: str = element()
-    value: str = element()
-
-class InstanceTagSet(BaseXmlModel):
-    item: list[InstanceTag] = element()
 
 class InstanceDescription(
     BaseXmlModel,
     tag="item",
 ):
-    instance_id: str = element(tag="instanceId")
+    instanceId: str = element()
-    image_id: str = element(tag="imageId")
+    imageId: str = element()
-    instance_state: InstanceState = element(tag="instanceState")
+    instanceState: InstanceState = element()
-    tag_set: InstanceTagSet = element(tag="tagSet")
+    privateIpAddress: str = element()
+    tagSet: list[Tag] = wrapped("tagSet", element(tag="item"))
+
+
+class ReservationSet(BaseXmlModel):
+    reservationId: str = element()
+    instancesSet: list[InstanceDescription] = wrapped("instancesSet", element(tag="item"))
 
-class DescribeInstancesResponseReservationSet(
-    BaseXmlModel,
-    tag="reservationSet",
-):
-    item: list[InstanceDescription] = element()
 
 class DescribeInstancesResponse(
     BaseXmlModel,
     tag="DescribeInstancesResponse",
-    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"}
+    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"},
 ):
-    request_id: str = element(tag="requestId")
+    requestId: str = element()
-    reservation_set: DescribeInstancesResponseReservationSet = element("reservationSet")
+    reservationSet: list[ReservationSet] = wrapped("reservationSet", element("item"))
 
 
-def describe_instance(instance: Instance, domain: libvirt.virDomain) -> InstanceDescription:
+def describe_instance_state(domain: libvirt.virDomain) -> InstanceState:
     running = domain.isActive()
-    return InstanceDescription(
+    return InstanceState(
-        instance_id=instance.id,
-        image_id=instance.imageId,
-        instance_state=InstanceState(
         code=16 if running else 80,
         name="running" if running else "stopped",
-        ),
+    )
-        tag_set=InstanceTagSet(
+
-            item=[
+
-                InstanceTag(
+def describe_instance(
+    instance: Instance, domain: libvirt.virDomain
+) -> InstanceDescription:
+    return InstanceDescription(
+        instanceId=instance.id,
+        imageId=instance.imageId,
+        instanceState=describe_instance_state(domain),
+        privateIpAddress=instance.privateIPv4,
+        tagSet=[
+            Tag(
                 key=key,
                 value=value,
-                ) for key, value in instance.tags.items()
+            )
-            ],
+            for key, value in instance.tags.items()
-        ),
+        ],
     )

src/openec2/api/describe_tags.py

@@ -0,0 +1,22 @@
+from pydantic_xml import BaseXmlModel, wrapped, element
+
+
+class TagDescription(BaseXmlModel):
+    key: str | None = element(default=None)
+
+    resourceId: str | None = element(default=None)
+
+    resourceType: str | None = element(default=None)
+
+    value: str | None = element(default=None)
+
+
+class DescribeTagsResponse(
+    BaseXmlModel,
+    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"}
+):
+    requestId: str = element()
+
+    nextToken: str | None = element()
+
+    tagSet: list[TagDescription] = wrapped("tagSet", element(tag="item"))

src/openec2/api/describe_volumes.py

@@ -0,0 +1,20 @@
+from pydantic_xml import BaseXmlModel, element
+
+
+class Volume(BaseXmlModel):
+    volumeId: str = element()
+    multiAttachEnabled: bool = element()
+
+
+class VolumeSet(BaseXmlModel):
+    item: list[Volume] = element(tag="item")
+
+
+class DescribeVolumesResponse(
+    BaseXmlModel,
+    tag="DescribeVolumesResponse",
+    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"},
+):
+    requestId: str = element()
+
+    volumeSet: VolumeSet = element()

src/openec2/api/detach_volume.py

@@ -0,0 +1,15 @@
+from pydantic_xml import BaseXmlModel, element
+
+
+class DetachVolumeResponse(
+    BaseXmlModel,
+    tag="DetachVolumeResponse",
+    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"},
+):
+    requestId: str = element()
+
+    volumeId: str = element()
+
+    instanceId: str = element()
+
+    status: str = element()

src/openec2/api/get_caller_identity.py

@@ -0,0 +1,18 @@
+from pydantic_xml import BaseXmlModel, element
+
+
+class GetCallerIdentityResult(BaseXmlModel):
+    arn: str = element(tag="Arn")
+    user_id: str = element(tag="UserId")
+    account: str = element(tag="Account")
+
+class ResponseMetadata(BaseXmlModel):
+   request_id: str = element(tag="RequestId")
+
+class GetCallerIdentityResponse(
+    BaseXmlModel,
+    nsmap={"": "https://sts.amazonaws.com/doc/2011-06-15/"}
+):
+    result: GetCallerIdentityResult = element(tag="GetCallerIdentityResult")
+
+    metadata: ResponseMetadata = element()

src/openec2/api/run_instances.py

@@ -1,13 +1,13 @@
 from pydantic_xml import BaseXmlModel, element
 
-from openec2.db.instance import Instance
-from openec2.api.shared import InstanceState
 from openec2.api.describe_instances import InstanceDescription
 
+
 class RunInstanceInstanceSet(BaseXmlModel):
     item: list[InstanceDescription] = element()
 
+
 class RunInstanceResponse(BaseXmlModel):
     request_id: str = element(tag="requestId")
 
-    instance_set: RunInstanceInstanceSet = element(tag="instanceSet")
+    instancesSet: RunInstanceInstanceSet = element(tag="instancesSet")

src/openec2/api/shared.py

@@ -4,3 +4,18 @@ from pydantic_xml import BaseXmlModel, element
 class InstanceState(BaseXmlModel):
     code: int = element()
     name: str = element()
+
+
+class InstanceInfo(BaseXmlModel):
+    instanceId: str = element()
+    currentState: InstanceState = element()
+    previousState: InstanceState = element()
+
+
+class InstancesSet(BaseXmlModel, tag="instancesSet"):
+    item: list[InstanceInfo] = element()
+
+
+class Tag(BaseXmlModel):
+    key: str = element()
+    value: str = element()

src/openec2/api/start_instances.py

@@ -1,26 +1,12 @@
 from pydantic_xml import BaseXmlModel, element
 
-from openec2.api.shared import InstanceState
+from openec2.api.shared import InstancesSet
 
 
-class StartInstancesResponseInstancesSetInstance(
-    BaseXmlModel,
-    tag="item",
-):
-    instance_id: str = element(tag="instanceId")
-    previous_state: InstanceState = element("previousState")
-    current_state: InstanceState = element("currentState")
-
-class StartInstancesResponseInstancesSet(
-    BaseXmlModel,
-    tag="instancesSet",
-):
-    item: list[StartInstancesResponseInstancesSetInstance] = element()
-
 class StartInstancesResponse(
     BaseXmlModel,
     tag="StartInstancesResponse",
-    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"}
+    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"},
 ):
     request_id: str = element(tag="requestId")
-    instances_set: StartInstancesResponseInstancesSet
+    instancesSet: InstancesSet = element()

src/openec2/api/stop_instances.py

@@ -1,26 +1,12 @@
 from pydantic_xml import BaseXmlModel, element
 
-from openec2.api.shared import InstanceState
+from openec2.api.shared import InstancesSet
 
 
-class StopInstancesResponseInstancesSetInstance(
-    BaseXmlModel,
-    tag="item",
-):
-    instance_id: str = element(tag="instanceId")
-    previous_state: InstanceState = element("previousState")
-    current_state: InstanceState = element("currentState")
-
-class StopInstancesResponseInstancesSet(
-    BaseXmlModel,
-    tag="instancesSet",
-):
-    item: list[StopInstancesResponseInstancesSetInstance] = element()
-
 class StopInstancesResponse(
     BaseXmlModel,
     tag="StopInstancesResponse",
-    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"}
+    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"},
 ):
-    request_id: str = element(tag="requestId")
+    requestId: str = element(tag="requestId")
-    instances_set: StopInstancesResponseInstancesSet
+    instancesSet: InstancesSet = element()

src/openec2/api/terminate_instances.py

@@ -0,0 +1,13 @@
+from pydantic_xml import BaseXmlModel, element
+
+from openec2.api.shared import InstancesSet
+
+
+class TerminateInstancesResponse(
+    BaseXmlModel,
+    tag="TerminateInstancesResponse",
+    nsmap={"": "http://ec2.amazonaws.com/doc/2016-11-15/"},
+):
+    requestId: str = element()
+
+    instancesSet: InstancesSet = element()

src/openec2/cli/add_user.py

@@ -0,0 +1,46 @@
+import argparse
+import secrets
+import base64
+
+from openec2.db import get_session
+from openec2.db.user import User
+
+from sqlmodel import select
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--name", type=str, required=True)
+    args = parser.parse_args()
+
+    secret_access_key = base64.b64encode(
+        secrets.token_bytes(64),
+    ).decode()
+
+    db = next(get_session())
+    access_key = base64.b64encode(
+        secrets.token_bytes(32),
+    ).decode()
+    while True:
+        if db.exec(select(User).where(User.access_key == access_key)).first() is None:
+            break
+
+        access_key = base64.b64encode(
+            secrets.token_bytes(32),
+        ).decode()
+
+    db.add(
+        User(
+            name=args.name,
+            access_key=access_key,
+            secret_access_key=secret_access_key,
+        )
+    )
+    db.commit()
+
+    print(f"Access key: {access_key}")
+    print(f"Secret access key: {secret_access_key}")
+
+
+if __name__ == "__main__":
+    main()

src/openec2/config.py

@@ -3,19 +3,23 @@ from fastapi import Depends
 from pydantic import BaseModel
 from typing import Annotated
 
+
 class _OpenEC2InstanceType(BaseModel):
     memory: int  # MiB
     vcpu: float
     disk: int  # Gi
 
+
 class _OpenEC2InstanceConfig(BaseModel):
     location: Path
-
+    volumes: Path
     types: dict[str, _OpenEC2InstanceType]
 
+
 class _OpenEC2LibvirtConfig(BaseModel):
     connection: str
 
+
 class _OpenEC2DatabaseConfig(BaseModel):
     # DB URL for sqlmodel
     url: str
@@ -23,6 +27,7 @@ class _OpenEC2DatabaseConfig(BaseModel):
     # Print SQL statements
     debug: bool
 
+
 class _OpenEC2Config(BaseModel):
     images: Path
     seed: Path
@@ -30,6 +35,8 @@ class _OpenEC2Config(BaseModel):
     libvirt: _OpenEC2LibvirtConfig
     database: _OpenEC2DatabaseConfig
     debug: bool
+    insecure: bool
+
 
 def _get_config() -> _OpenEC2Config:
     # TODO: Read from disk
@@ -38,6 +45,7 @@ def _get_config() -> _OpenEC2Config:
         seed=Path("/home/alexander/openec2/seed"),
         instances=_OpenEC2InstanceConfig(
             location=Path("/home/alexander/openec2/instances"),
+            volumes=Path("/home/alexander/openec2/volumes"),
             types={
                 "micro": _OpenEC2InstanceType(
                     memory=1024,
@@ -46,16 +54,16 @@ def _get_config() -> _OpenEC2Config:
                 ),
             },
         ),
-        libvirt=_OpenEC2LibvirtConfig(
+        libvirt=_OpenEC2LibvirtConfig(connection="qemu:///system"),
-            connection="qemu:///system"
-        ),
         debug=True,
+        insecure=False,
         database=_OpenEC2DatabaseConfig(
             url="sqlite:////home/alexander/openec2/db2.sqlite3",
-            debug=True,
+            debug=False,
         ),
     )
 
+
 class ConfigSingleton:
     __instance: "ConfigSingleton | None" = None
 
@@ -73,4 +81,5 @@ class ConfigSingleton:
             ConfigSingleton.__instance = ConfigSingleton()
         return ConfigSingleton.__instance
 
+
 OpenEC2Config = Annotated[_OpenEC2Config, Depends(ConfigSingleton.of().get_config)]

src/openec2/db/__init__.py

@@ -12,8 +12,10 @@ engine = create_engine(
     echo=ConfigSingleton.of().config.database.debug,
 )
 
+
 def get_session() -> Generator[Session]:
     with Session(engine) as session:
         yield session
 
+
 DatabaseDep = Annotated[Session, Depends(get_session)]

src/openec2/db/image.py

@@ -1,4 +1,5 @@
-from sqlmodel import SQLModel, Field
+from sqlmodel import SQLModel, Field, Column, JSON
+
 
 class AMI(SQLModel, table=True):
     # ID of the AMI
@@ -12,3 +13,9 @@ class AMI(SQLModel, table=True):
 
     # Was the image registered
     deregistered: bool = Field(default=False)
+
+    # Owner of the image who created it
+    owner_id: int = Field(foreign_key="user.id")
+
+    # Tags associated with the AMI
+    tags: dict = Field(sa_column=Column(JSON), default={})

src/openec2/db/instance.py

@@ -1,4 +1,37 @@
-from sqlmodel import SQLModel, Field, JSON, Column
+from pathlib import Path
+from datetime import datetime
+
+from sqlmodel import SQLModel, Field, JSON, Column, Relationship
+
+from openec2.config import OpenEC2Config
+
+
+class EBSVolumeInstanceLink(SQLModel, table=True):
+    instance_id: str | None = Field(
+        default=None, foreign_key="instance.id", primary_key=True
+    )
+    ebs_volume_id: str | None = Field(
+        default=None, foreign_key="ebsvolume.id", primary_key=True
+    )
+
+
+class EBSVolume(SQLModel, table=True):
+    id: str = Field(primary_key=True)
+
+    availability_zone: str
+
+    multi_attach_enabled: bool
+
+    instances: list["Instance"] = Relationship(
+        back_populates="ebs_volumes", link_model=EBSVolumeInstanceLink
+    )
+
+    owner_id: int = Field(foreign_key="user.id")
+
+    def path(self, config: OpenEC2Config) -> Path:
+        """Compute the path of the volume on disk."""
+        return config.instances.volumes / self.id
+
 
 class Instance(SQLModel, table=True):
     id: str = Field(default=None, primary_key=True)
@@ -6,7 +39,9 @@ class Instance(SQLModel, table=True):
     # Tags associated with the VM
     tags: dict = Field(sa_column=Column(JSON), default={})
 
-    # ImageID of the used AMI
+    instanceType: str
+
+    # ImageID of the used AMI. None only if terminated == True.
     imageId: str
 
     # Optional user data associated with the VM
@@ -17,3 +52,17 @@ class Instance(SQLModel, table=True):
 
     # Private IPv4 of the instance
     privateIPv4: str
+
+    # The owner that creatd the resource.
+    owner_id: int = Field(foreign_key="user.id")
+
+    # Attached EBS volumes
+    ebs_volumes: list[EBSVolume] = Relationship(
+        back_populates="instances", link_model=EBSVolumeInstanceLink
+    )
+
+    # Is the instance terminated
+    terminated: bool
+
+    # Date at which the instance got terminated
+    terminationDate: datetime | None

src/openec2/db/ipam.py

@@ -19,6 +19,4 @@ class IPAMEntry(SQLModel, table=True):
     def set_ipv4(self, addr: str):
         self.ipv4_addr_raw = ipv4_to_int(addr)
 
-    __table_args = (
+    __table_args = (PrimaryKeyConstraint("ipv4_addr_raw", "vpc_id"),)
-        PrimaryKeyConstraint("ipv4_addr_raw", "vpc_id"),
-    )

src/openec2/db/user.py

@@ -0,0 +1,12 @@
+from sqlmodel import SQLModel, Field
+
+
+class User(SQLModel, table=True):
+    id: int = Field(default=None, primary_key=True)
+
+    # Human-readable id
+    name: str
+
+    # For request signing
+    access_key: str
+    secret_access_key: str

src/openec2/db/vpc.py

@@ -1,11 +1,34 @@
-from sqlmodel import SQLModel, Field, PrimaryKeyConstraint
+from ipaddress import ip_network
+
+from sqlmodel import SQLModel, Field
+
 
 class VPC(SQLModel, table=True):
     # ID of the VPC
     id: str = Field(default=None, primary_key=True)
 
-    # Subnet mask
+    # Number-suffix of the bridge device
-    subnet: str
+    bridge_num: int
 
     # Base IPv4
-    ipv4_base: str
+    cidr: str
+
+    # Flag indicating whether this VPC is the user's default VPC
+    default: bool
+
+    # Owning user
+    owner_id: int = Field(foreign_key="user.id")
+
+    @property
+    def virbr(self) -> str:
+        return f"virbr{self.bridge_num}"
+
+    @property
+    def gateway(self) -> str:
+        network = ip_network(self.cidr)
+        return f"{network[1]}/{network.prefixlen}"
+
+    @property
+    def broadcast(self) -> str:
+        network = ip_network(self.cidr)
+        return f"{network[255]}"

src/openec2/images.py

@@ -7,13 +7,15 @@ from openec2.db.image import AMI
 
 
 def garbage_collect_image(image_id: str, db: DatabaseDep):
-    instances = db.exec(select(Instance).where(Instance.imageId == image_id)).all()
+    instances = db.exec(select(Instance).where(Instance.imageId == image_id, Instance.terminated == False)).all()
     if instances:
         print("Instances sill using AMI. Not cleaning up")
         print(instances)
         return
 
-    ami = db.exec(select(AMI).where(AMI.id == image_id, AMI.deregistered == True)).first()
+    ami = db.exec(
+        select(AMI).where(AMI.id == image_id, AMI.deregistered == True)
+    ).first()
     if ami is not None:
         db.delete(ami)
         db.commit()

src/openec2/ipam.py

@@ -34,9 +34,16 @@ def add_instance_dhcp_mapping(instance_id: str, mac: str, ipv4: str, db: Databas
         flags=libvirt.VIR_NETWORK_UPDATE_AFFECT_LIVE,
     )
 
-def remove_instance_dhcp_mapping(instance_id: str, mac: str ,ipv4: str, db: DatabaseDep):
+
+def remove_instance_dhcp_mapping(
+    instance_id: str, mac: str, ipv4: str, db: DatabaseDep
+):
     i = ipv4_to_int(ipv4)
-    entry = db.exec(select(IPAMEntry).where(IPAMEntry.ipv4_addr_raw == i, IPAMEntry.instance_id == instance_id)).first()
+    entry = db.exec(
+        select(IPAMEntry).where(
+            IPAMEntry.ipv4_addr_raw == i, IPAMEntry.instance_id == instance_id
+        )
+    ).first()
     db.delete(entry)
 
     # Tell libvirt about this mapping
@@ -49,13 +56,21 @@ def remove_instance_dhcp_mapping(instance_id: str, mac: str ,ipv4: str, db: Data
         flags=libvirt.VIR_NETWORK_UPDATE_AFFECT_LIVE,
     )
 
+
 def is_ipv4_available(ipv4: str, db: DatabaseDep) -> bool:
     i = ipv4_to_int(ipv4)
-    return db.exec(select(IPAMEntry).where(IPAMEntry.ipv4_addr_raw == i)).first() is None
+    return (
+        db.exec(select(IPAMEntry).where(IPAMEntry.ipv4_addr_raw == i)).first() is None
+    )
+
 
 def get_available_ipv4(db: DatabaseDep) -> str:
     entries = db.exec(select(IPAMEntry)).all()
     # TODO: Use the VPC's subnet
-    max_ip = max(e.ipv4_addr_raw for e in entries) if entries else ipv4_to_int("192.168.122.2")
+    max_ip = (
+        max(e.ipv4_addr_raw for e in entries)
+        if entries
+        else ipv4_to_int("192.168.122.2")
+    )
     # TODO: Check if we're still inside the subnet
     return int_to_ipv4(max_ip + 1)

src/openec2/main.py

@@ -1,10 +1,15 @@
+from urllib.parse import parse_qs
+from typing import cast
+
 from fastapi import FastAPI, HTTPException, Request, Response
 from sqlalchemy import select
 from sqlmodel import SQLModel
 
+from openec2.security.aws import AWSSignature
 from openec2.utils.text import multiline_yaml_response
 from openec2.config import OpenEC2Config
 from openec2.db import DatabaseDep, engine
+from openec2.db.user import User
 from openec2.actions.describe_images import describe_images
 from openec2.actions.import_image import import_image
 from openec2.actions.describe_instances import describe_instances
@@ -13,24 +18,77 @@ from openec2.actions.terminate_instances import terminate_instances
 from openec2.actions.start_instances import start_instances
 from openec2.actions.stop_instances import stop_instances
 from openec2.actions.deregister_image import deregister_image
+from openec2.actions.create_volume import create_volume
+from openec2.actions.attach_volume import attach_volume
+from openec2.actions.describe_volumes import describe_volumes
+from openec2.actions.detach_volume import detach_volume
 from openec2.db.instance import Instance
+from openec2.actions.get_caller_identity import get_caller_identity
+from openec2.actions.describe_instance_types import describe_instance_types
+from openec2.actions.describe_tags import describe_tags
+from openec2.actions.create_tags import create_tags
+from openec2.actions.describe_instance_attribute import describe_instance_attribute
+
 
 app = FastAPI()
 
+
 @app.on_event("startup")
 def on_startup():
     SQLModel.metadata.create_all(engine)
 
+
 @app.get("/healthz", response_model=None)
 def healthz():
     return {
         "status": "OK",
     }
 
+
 @app.get("/Action", response_model=None)
-def action(request: Request, config: OpenEC2Config, db: DatabaseDep):
+def get_action(
-    action = request.query_params["Action"]
+    request: Request, config: OpenEC2Config, db: DatabaseDep, user: AWSSignature
-    return {
+):
+    print("GET Action")
+    return run_action(
+        request,
+        config,
+        db,
+        cast(dict, request.query_params),
+        user,
+    )
+
+
+@app.post("/Action", response_model=None)
+async def post_action(
+    request: Request, config: OpenEC2Config, db: DatabaseDep, user: AWSSignature
+):
+    print("POST Action")
+
+    body = (await request.body()).decode()
+    print(f"--> {body}")
+    query_params = {
+        key: value[0]
+        for key, value in parse_qs(body).items()
+    }
+    return run_action(
+        request,
+        config,
+        db,
+        cast(dict, query_params),
+        user,
+    )
+
+
+def run_action(
+    request: Request,
+    config: OpenEC2Config,
+    db: DatabaseDep,
+    query_params: dict[str, str],
+    user: User,
+):
+    action = query_params["Action"]
+    action_function = {
         "ImportImage": import_image,
         "DescribeImages": describe_images,
         "RunInstances": run_instances,
@@ -39,7 +97,26 @@ def action(request: Request, config: OpenEC2Config, db: DatabaseDep):
         "StartInstances": start_instances,
         "StopInstances": stop_instances,
         "DeregisterImage": deregister_image,
-    }[action](request.query_params, config, db)
+        "CreateVolume": create_volume,
+        "AttachVolume": attach_volume,
+        "DescribeVolumes": describe_volumes,
+        "DetachVolume": detach_volume,
+        "GetCallerIdentity": get_caller_identity,
+        "DescribeInstanceTypes": describe_instance_types,
+        "DescribeTags": describe_tags,
+        "CreateTags": create_tags,
+        "DescribeInstanceAttribute": describe_instance_attribute,
+    }.get(action)
+    if action_function is None:
+        print(f"Unknown action: '{action}'")
+        raise HTTPException(
+            status_code=404,
+            detail="Unknown action",
+        )
+
+    return action_function(query_params, config, db, user)
+
+
 
 @app.get("/private/cloudinit/{instance_id}/{entry}")
 def cloud_init_data(instance_id: str, entry: str, db: DatabaseDep):
@@ -47,7 +124,9 @@ def cloud_init_data(instance_id: str, entry: str, db: DatabaseDep):
         raise HTTPException(status_code=404, detail="Unknown cloud-init file")
 
     if entry == "user-data":
-        instance = db.exec(select(Instance).where(Instance.id == instance_id)).first()[0]
+        instance = db.exec(select(Instance).where(Instance.id == instance_id)).first()[
+            0
+        ]
         if instance is None:
             raise HTTPException(status_code=404, detail="Unknown instance")
 
@@ -58,17 +137,21 @@ def cloud_init_data(instance_id: str, entry: str, db: DatabaseDep):
             media_type="application/yaml",
         )
     elif entry == "meta-data":
-        return multiline_yaml_response([
+        return multiline_yaml_response(
+            [
                 f"instance-id: {instance_id}",
                 f"local-hostname: {instance_id}",
-        ])
+            ]
+        )
     elif entry == "vendor-data":
-        return multiline_yaml_response([
+        return multiline_yaml_response(
+            [
                 "#cloud-config",
                 "growpart:",
                 "   devices: [/]",
                 "   ignore_growroot_disabled: true",
-        ])
+            ]
+        )
     elif entry == "network-config":
         return Response(
             "",

src/openec2/network/vpc.py

@@ -0,0 +1,13 @@
+import subprocess
+
+from openec2.db.vpc import VPC
+
+
+def prepare_host_vpc(vpc: VPC):
+    # Create the bridge
+    subprocess.call([
+        "/home/alexander/Development/Personal/openec2/scripts/create-network-interface.sh",
+        vpc.virbr,
+        vpc.gateway,
+        vpc.broadcast,
+    ])

src/openec2/security/aws.py

@@ -0,0 +1,192 @@
+from typing import Annotated, cast
+from dataclasses import dataclass
+import datetime
+from hashlib import sha256
+from urllib.parse import parse_qs
+
+from sqlmodel import select
+from fastapi import Request, HTTPException, Depends
+from fastapi.datastructures import URL, Headers
+from cryptography.hazmat.primitives import hashes, hmac
+
+from openec2.config import ConfigSingleton
+from openec2.db import DatabaseDep
+from openec2.db.user import User
+
+
+def _hmac_sha256(key: bytes, payload: bytes) -> bytes:
+    h = hmac.HMAC(key, hashes.SHA256())
+    h.update(payload)
+    return h.finalize()
+
+
+@dataclass
+class AWSRequest:
+    # The entire used URL
+    url: URL
+
+    # Request method
+    method: str
+
+    # Query params
+    params: dict[str, str]
+
+    # Request headers
+    headers: Headers
+
+    # The payload, if we used a POST/PUT
+    payload: str | None
+
+    # List of headers that were signed
+    signed_headers: list[str]
+
+    def include_in_canonical_string(self, name: str) -> bool:
+        return name.lower() in self.signed_headers
+
+    # TODO: Probably vulnerable against a replay because we never get the current date ourselves
+    def sign(
+        self, secret_access_key: str, region: str, product: str, credential_scope: str
+    ) -> str:
+        dt = datetime.datetime.fromisoformat(self.headers["X-Amz-Date"])
+
+        canonical_header_string_keys = sorted(
+            [name for name in self.headers.keys() if self.include_in_canonical_string(name)]
+        )
+        canonical_header_string = (
+            "\n".join(
+                [
+                    f"{name.lower()}:{self.headers[name].strip()}"
+                    for name in canonical_header_string_keys
+                ]
+            )
+            + "\n"
+        )
+        signed_headers = ";".join(canonical_header_string_keys)
+        hashed_payload = sha256((self.payload or "").encode()).hexdigest()
+        canonical_request = "\n".join(
+            [
+                self.method.upper(),
+                self.url.path or "/",
+                # canonical_query_string,
+                "",
+                canonical_header_string,
+                signed_headers,
+                hashed_payload,
+            ]
+        )
+
+        hashed_canonical_request = sha256(canonical_request.encode()).hexdigest()
+        date = dt.strftime("%Y%m%d")
+        string_to_sign = "\n".join(
+            [
+                "AWS4-HMAC-SHA256",
+                dt.strftime("%Y%m%dT%H%M%SZ"),
+                credential_scope,
+                hashed_canonical_request,
+            ]
+        )
+
+        date_key = _hmac_sha256(f"AWS4{secret_access_key}".encode(), date.encode())
+        date_region_key = _hmac_sha256(date_key, region.encode())
+        date_region_service_key = _hmac_sha256(date_region_key, product.encode())
+        signing_key = _hmac_sha256(date_region_service_key, "aws4_request".encode())
+        return _hmac_sha256(signing_key, string_to_sign.encode()).hex()
+
+
+@dataclass
+class AWSAuthentication:
+    x_amz_algorithm: str
+
+    x_amz_credential: str
+
+    x_amz_signature: str
+
+    signed_headers: str
+
+
+def get_authentication_info(request: Request) -> AWSAuthentication:
+    if request.method == "POST":
+        algorithm, rest = request.headers["Authorization"].split(" ", 1)
+        auth = {}
+        for part in rest.split(","):
+            key, value = part.split("=", 1)
+            auth[key.strip()] = value.strip()
+
+        return AWSAuthentication(
+            x_amz_algorithm=algorithm,
+            x_amz_credential=auth["Credential"],
+            x_amz_signature=auth["Signature"],
+            signed_headers=auth["SignedHeaders"],
+        )
+
+    return AWSAuthentication(
+        "",
+        "",
+        "",
+        "",
+    )
+
+
+async def check_request_signature(request: Request, db: DatabaseDep):
+    # Do not check if we don't care
+    if ConfigSingleton.of().config.insecure:
+        return
+
+    body = (await request.body()).decode()
+    query_params = (
+        cast(dict, parse_qs(body))
+        if request.method == "POST"
+        else cast(dict, request.query_params)
+    )
+
+    auth_info = get_authentication_info(request)
+
+    if auth_info.x_amz_algorithm != "AWS4-HMAC-SHA256":
+        raise HTTPException(
+            status_code=403,
+            detail=f"Invalid signature algorithm: {auth_info.x_amz_algorithm}",
+        )
+
+    x_amz_credential = auth_info.x_amz_credential
+
+    reversed_parts = x_amz_credential[::-1].split("/", 4)
+    access_key, date, region, service, key = [s[::-1] for s in reversed_parts][::-1]
+    user = db.exec(select(User).where(User.access_key == access_key)).first()
+    if user is None:
+        raise HTTPException(status_code=403)
+
+    # Validate the signed headers
+    signed_headers = auth_info.signed_headers.split(";")
+    if any(header not in signed_headers for header in [
+        "host",
+        "content-type",
+    ]):
+        print("Validation of signed headers failed!")
+        raise HTTPException(status_code=403)
+
+    print(auth_info.x_amz_credential)
+    x_amz_signature = auth_info.x_amz_signature
+    signature = AWSRequest(
+        url=request.url,
+        method=request.method,
+        params=query_params,
+        headers=request.headers,
+        payload=body,
+        signed_headers=signed_headers,
+    ).sign(
+        user.secret_access_key,
+        region,
+        service,
+        "/".join([date, region, service, key]),
+    )
+
+    if x_amz_signature != signature:
+        print("Signature mismatch!")
+        print(f"Expected: {signature}")
+        print(f"Got:      {x_amz_signature}")
+        raise HTTPException(status_code=403)
+
+    return user
+
+
+AWSSignature = Annotated[User, Depends(check_request_signature)]

src/openec2/utils/array.py

@@ -1,3 +1,6 @@
+from typing import Callable
+
+
 def parse_array_objects(prefix: str, params: dict) -> list[dict[str, str]]:
     items: dict[str, dict[str, str]] = {}
     for key, value in params.items():
@@ -10,6 +13,7 @@ def parse_array_objects(prefix: str, params: dict) -> list[dict[str, str]]:
         items[parts[1]][".".join(parts[2:])] = value
     return list(items.values())
 
+
 def parse_array_plain(prefix: str, params: dict[str, str]) -> list[str]:
     items: dict[str, str] = {}
     for key, value in params.items():
@@ -24,3 +28,18 @@ def parse_array_plain(prefix: str, params: dict[str, str]) -> list[str]:
 
     indices = sorted(list(items.keys()))
     return [items[key] for key in indices]
+
+
+def find[T](l: list[T], pred: Callable[[T], bool]) -> T | None:
+    for item in l:
+        if pred(item):
+            return item
+    return None
+
+
+def parse_tag_specification(params: dict) -> dict[str, str]:
+    tags: dict[str, str] = {}
+    for spec in parse_array_objects("TagSpecification", params):
+        for raw_tag in parse_array_objects("Tag", spec):
+            tags[raw_tag["Key"]] = raw_tag["Value"]
+    return tags

src/openec2/utils/ip.py

@@ -9,9 +9,10 @@ from openec2.db.instance import Instance
 def ipv4_to_int(ip: str) -> int:
     i = 0
     for idx, p in enumerate(ip.split(".")):
-        i += (int(p) << (3-idx)*8)
+        i += int(p) << (3 - idx) * 8
     return i
 
+
 def int_to_ipv4(ip: int) -> str:
     parts: list[int] = []
     for i in reversed(range(4)):
@@ -20,6 +21,7 @@ def int_to_ipv4(ip: int) -> str:
         )
     return ".".join(str(p) for p in parts)
 
+
 def generate_mac() -> str:
     mac_bytes = random.randbytes(6)
     mac = ""
@@ -35,10 +37,14 @@ def generate_mac() -> str:
             mac += f"{h}:"
     return mac[:-1]
 
+
 def generate_available_mac(db: DatabaseDep) -> str:
     mac = ""
     while True:
         mac = generate_mac()
-        if db.exec(select(Instance).where(Instance.interfaceMac == mac)).first() is None:
+        if (
+            db.exec(select(Instance).where(Instance.interfaceMac == mac)).first()
+            is None
+        ):
             break
     return mac

src/openec2/utils/libvirt.py

@@ -0,0 +1,86 @@
+from openec2.config import OpenEC2Config
+from openec2.db.instance import EBSVolume, Instance
+
+
+def ebs_volume_to_libvirt_xml(volume: EBSVolume, config: OpenEC2Config) -> str:
+    # TODO: Honour the attached device name
+    return f"""
+        <filesystem type='mount' accessmode='passthrough'>
+            <driver type='virtiofs' queue='1024' />
+            <source dir='{config.instances.volumes / volume.id}' />
+            <target dir='{volume.id}' />
+        </filesystem>
+    """
+
+
+def instance_to_libvirt_xml(
+    instance: Instance,
+    config: OpenEC2Config,
+    uuid: str | None = None,
+) -> str:
+    instance_type = config.instances.types[instance.instanceType]
+    ami_path = config.instances.location / instance.id
+    memory_backing = (
+        """
+    <memoryBacking>
+        <source type='memfd' />
+        <access mode='shared' />
+    </memoryBacking>
+"""
+        if instance.ebs_volumes
+        else ""
+    )
+
+    volumes = "\n".join(
+        ebs_volume_to_libvirt_xml(volume, config) for volume in instance.ebs_volumes
+    )
+
+    uuid_element = f"<uuid>{uuid}</uuid>" if uuid is not None else ""
+    return f"""<domain type='kvm'>
+    {uuid_element}
+    <name>{instance.id}</name>
+    <memory unit='MiB'>{instance_type.memory}</memory>
+    {memory_backing}
+    <vcpu placement='static'>{int(instance_type.vcpu)}</vcpu>
+    <os>
+        <type arch='x86_64'>hvm</type>
+        <boot dev='hd' />
+        <smbios mode='sysinfo' />
+    </os>
+    <sysinfo type='smbios'>
+        <system>
+            <entry name='serial'>ds=nocloud;s=http://192.168.122.1:8000/private/cloudinit/{instance.id}/</entry>
+        </system>
+    </sysinfo>
+    <features>
+        <acpi />
+        <apic />
+        <vmport state='off' />
+    </features>
+    <clock offset='utc'>
+        <timer name='rtc' tickpolicy='catchup'/>
+        <timer name='pit' tickpolicy='delay'/>
+        <timer name='hpet' present='no'/>
+    </clock>
+    <pm>
+        <suspend-to-mem enabled='no'/>
+        <suspend-to-disk enabled='no'/>
+    </pm>
+    <devices>
+        {volumes}
+        <disk type='file' device='disk'>
+            <driver name='qemu' type='qcow2'/>
+            <source file='{ami_path}'/>
+            <target dev='vda' bus='virtio'/>
+        </disk>
+        <rng model="virtio">
+            <backend model="random">/dev/urandom</backend>
+        </rng>
+        <interface type="network">
+            <source network="default"/>
+            <mac address="{instance.interfaceMac}" />
+            <model type="virtio"/>
+        </interface>
+    </devices>
+</domain>
+"""

src/openec2/utils/qemu.py

@@ -3,12 +3,17 @@ import subprocess
 
 
 def create_cow_copy(src: Path, dst: Path, size: str):
-    subprocess.call([
+    subprocess.call(
+        [
             "qemu-img",
             "create",
-        "-f", "qcow2",
+            "-f",
-        "-b", str(src),
+            "qcow2",
-        "-F", "qcow2",
+            "-b",
+            str(src),
+            "-F",
+            "qcow2",
             str(dst),
             size,
-    ])
+        ]
+    )

src/openec2/utils/text.py

@@ -1,5 +1,6 @@
 from fastapi import Response
 
+
 def multiline_yaml_response(lines: list[str]) -> Response:
     return Response(
         "\n".join(lines),

tests/openec2/utils/test_array.py

@@ -14,6 +14,7 @@ def test_array_parsing_keys():
     assert parsed[1]["a"] == "3"
     assert parsed[1]["b"] == "4"
 
+
 def test_array_plain_parsing():
     params = {
         "Key.1": "1",

uv.lock

@@ -33,6 +33,28 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/38/fc/bce832fd4fd99766c04d1ee0eead6b0ec6486fb100ae5e74c1d91292b982/certifi-2025.1.31-py3-none-any.whl", hash = "sha256:ca78db4565a652026a4db2bcdf68f2fb589ea80d0be70e03929ed730746b84fe", size = 166393 },
 ]
 
+[[package]]
+name = "cffi"
+version = "1.17.1"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "pycparser" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/fc/97/c783634659c2920c3fc70419e3af40972dbaf758daa229a7d6ea6135c90d/cffi-1.17.1.tar.gz", hash = "sha256:1c39c6016c32bc48dd54561950ebd6836e1670f2ae46128f67cf49e789c52824", size = 516621 }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/8d/f8/dd6c246b148639254dad4d6803eb6a54e8c85c6e11ec9df2cffa87571dbe/cffi-1.17.1-cp313-cp313-macosx_10_13_x86_64.whl", hash = "sha256:f3a2b4222ce6b60e2e8b337bb9596923045681d71e5a082783484d845390938e", size = 182989 },
+    { url = "https://files.pythonhosted.org/packages/8b/f1/672d303ddf17c24fc83afd712316fda78dc6fce1cd53011b839483e1ecc8/cffi-1.17.1-cp313-cp313-macosx_11_0_arm64.whl", hash = "sha256:0984a4925a435b1da406122d4d7968dd861c1385afe3b45ba82b750f229811e2", size = 178802 },
+    { url = "https://files.pythonhosted.org/packages/0e/2d/eab2e858a91fdff70533cab61dcff4a1f55ec60425832ddfdc9cd36bc8af/cffi-1.17.1-cp313-cp313-manylinux_2_12_i686.manylinux2010_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:d01b12eeeb4427d3110de311e1774046ad344f5b1a7403101878976ecd7a10f3", size = 454792 },
+    { url = "https://files.pythonhosted.org/packages/75/b2/fbaec7c4455c604e29388d55599b99ebcc250a60050610fadde58932b7ee/cffi-1.17.1-cp313-cp313-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:706510fe141c86a69c8ddc029c7910003a17353970cff3b904ff0686a5927683", size = 478893 },
+    { url = "https://files.pythonhosted.org/packages/4f/b7/6e4a2162178bf1935c336d4da8a9352cccab4d3a5d7914065490f08c0690/cffi-1.17.1-cp313-cp313-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl", hash = "sha256:de55b766c7aa2e2a3092c51e0483d700341182f08e67c63630d5b6f200bb28e5", size = 485810 },
+    { url = "https://files.pythonhosted.org/packages/c7/8a/1d0e4a9c26e54746dc08c2c6c037889124d4f59dffd853a659fa545f1b40/cffi-1.17.1-cp313-cp313-manylinux_2_17_s390x.manylinux2014_s390x.whl", hash = "sha256:c59d6e989d07460165cc5ad3c61f9fd8f1b4796eacbd81cee78957842b834af4", size = 471200 },
+    { url = "https://files.pythonhosted.org/packages/26/9f/1aab65a6c0db35f43c4d1b4f580e8df53914310afc10ae0397d29d697af4/cffi-1.17.1-cp313-cp313-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:dd398dbc6773384a17fe0d3e7eeb8d1a21c2200473ee6806bb5e6a8e62bb73dd", size = 479447 },
+    { url = "https://files.pythonhosted.org/packages/5f/e4/fb8b3dd8dc0e98edf1135ff067ae070bb32ef9d509d6cb0f538cd6f7483f/cffi-1.17.1-cp313-cp313-musllinux_1_1_aarch64.whl", hash = "sha256:3edc8d958eb099c634dace3c7e16560ae474aa3803a5df240542b305d14e14ed", size = 484358 },
+    { url = "https://files.pythonhosted.org/packages/f1/47/d7145bf2dc04684935d57d67dff9d6d795b2ba2796806bb109864be3a151/cffi-1.17.1-cp313-cp313-musllinux_1_1_x86_64.whl", hash = "sha256:72e72408cad3d5419375fc87d289076ee319835bdfa2caad331e377589aebba9", size = 488469 },
+    { url = "https://files.pythonhosted.org/packages/bf/ee/f94057fa6426481d663b88637a9a10e859e492c73d0384514a17d78ee205/cffi-1.17.1-cp313-cp313-win32.whl", hash = "sha256:e03eab0a8677fa80d646b5ddece1cbeaf556c313dcfac435ba11f107ba117b5d", size = 172475 },
+    { url = "https://files.pythonhosted.org/packages/7c/fc/6a8cb64e5f0324877d503c854da15d76c1e50eb722e320b15345c4d0c6de/cffi-1.17.1-cp313-cp313-win_amd64.whl", hash = "sha256:f6a16c31041f09ead72d69f583767292f750d24913dadacf5756b966aacb3f1a", size = 182009 },
+]
+
 [[package]]
 name = "charset-normalizer"
 version = "3.4.1"
@@ -76,6 +98,41 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/d1/d6/3965ed04c63042e047cb6a3e6ed1a63a35087b6a609aa3a15ed8ac56c221/colorama-0.4.6-py2.py3-none-any.whl", hash = "sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6", size = 25335 },
 ]
 
+[[package]]
+name = "cryptography"
+version = "44.0.2"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "cffi", marker = "platform_python_implementation != 'PyPy'" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/cd/25/4ce80c78963834b8a9fd1cc1266be5ed8d1840785c0f2e1b73b8d128d505/cryptography-44.0.2.tar.gz", hash = "sha256:c63454aa261a0cf0c5b4718349629793e9e634993538db841165b3df74f37ec0", size = 710807 }
+wheels = [
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