authorized_keys

@@ -0,0 +1,14 @@
+# Yubikey
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCoRxIS1Dr33Jhybd/ck7UCLQ1Df5msSpvw03w/ljgB+1sx/U+965+q597XRHHnzPey8NFrOdID4I1l0tfco1XG5DJG2yJ/zY+tbyK+0b0Yi4qbRFnH2kxKYcdHq29CiVk64o1VHJxxj78IO2wTUcgK4sXijm05LWqCik4LSfcOBEyOwK6f37Mew19KDq7UAojHLTEbVB6xiv2ufh9evn3PggirE1VtvQlTBnt3NdBDumxD1RzRoVgwMuU1FNvQeMwLnlMlvLX76vjPkRRrgBGEJ2k0BUm7slrAtRnBzIvIbouk55MIBzpPjCIi53L91KxwNkHNPldYG81C+BczN/R5 cardno:000604717732
+
+# Chromebook (GalliumOS)
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDxUNqjpukVhDXJnicD0dOhMMaQPOqYgPR14NSUd9rLp lobo@gallium
+
+# Home server
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIO4qu/tmKfeTtFDFimpcKH+1HRiiug7eNzNvORoH1ngh lobo@nas2
+
+# Corp workspaces
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBqdB5I6TIaXo0vMTjQ59SA4OL9TWWVXt+afbKRgU2u3 lobo@DESKTOP-VT5VL1V
+
+# Phone
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPb49syadEvvwlBpRs6DaZxJGV1HgOC/bYZR1WIYvNus u0_a276@localhost

config

@@ -0,0 +1,3 @@
+[default]
+region = us-west-2
+output = json

makeitso

@@ -5,12 +5,9 @@ if [ $# -ne 1 ]; then
   exit 1
 fi
 
-if [ ! -d /home/authorizedkeysuser ]; then
 #sudo adduser --disabled-login --gecos 'User for AuthorizedKeysCommand' authorizedkeysuser ||
 sudo useradd -c 'User for AuthorizedKeysCommand' -d /home/authorizedkeysuser -m -s/usr/sbin/nologin authorizedkeysuser
-fi
 
-grep -qF 'AuthorizedKeysCommand /etc/ssh/get_authorized_keys' /etc/ssh/sshd_config || \
 sudo sh -c "echo 'Match User $1
   AuthorizedKeysCommand /etc/ssh/get_authorized_keys
   AuthorizedKeysCommandUser authorizedkeysuser' >> /etc/ssh/sshd_config"
@@ -19,4 +16,9 @@ sudo cp get_authorized_keys /etc/ssh
 
 sudo chmod 755 /etc/ssh/get_authorized_keys
 
+sudo -u authorizedkeysuser mkdir ~authorizedkeysuser/.aws
+sudo -u authorizedkeysuser cp config ~authorizedkeysuser/.aws
+sudo -u authorizedkeysuser cp .credentials ~authorizedkeysuser/.aws/credentials
+sudo -u authorizedkeysuser chmod 600 ~authorizedkeysuser/.aws/*
+sudo -H -u authorizedkeysuser sh -c 'command -v aws > /dev/null 2>&1 || pip install --user awscli'
 sudo systemctl restart sshd

trigger/authorized_keys.py

@@ -0,0 +1,74 @@
+import json
+import boto3
+
+ddb = boto3.client('dynamodb')
+codecommit = boto3.client('codecommit')
+targetarn = 'arn:aws:codecommit:us-west-2:932028523435:authorized_keys'
+
+
+def lambda_handler(event, context):
+    # {
+    #   "Records": [
+    #     {
+    #       "awsRegion": "us-west-2",
+    #       "codecommit": {
+    #         "references": [
+    #           {
+    #             "commit": "5c4ef1049f1d27deadbeeff313e0730018be182b",
+    #             "ref": "refs/heads/master"
+    #           }
+    #         ]
+    #       },
+    #       "customData": "this is custom data",
+    #       "eventId": "5a824061-17ca-46a9-bbf9-114edeadbeef",
+    #       "eventName": "TriggerEventTest",
+    #       "eventPartNumber": 1,
+    #       "eventSource": "aws:codecommit",
+    #       "eventSourceARN": "arn:aws:codecommit:us-west-2:123456789012:repo",
+    #       "eventTime": "2016-01-01T23:59:59.000+0000",
+    #       "eventTotalParts": 1,
+    #       "eventTriggerConfigId": "5a824061-17ca-46a9-bbf9-114edeadbeef",
+    #       "eventTriggerName": "my-trigger",
+    #       "eventVersion": "1.0",
+    #       "userIdentityARN": "arn:aws:iam::123456789012:root"
+    #     }
+    #   ]
+    # }
+    print(json.dumps(event))
+    records = event["Records"]
+    if records is None or len(records) == 0:
+        raise RuntimeError('No records property in event')
+    print(records)
+    for record in records:
+        repoArn = record['eventSourceARN']
+        if repoArn is None:
+            print('no eventSourceARN on record')
+            continue
+        print('Record from ARN' + repoArn)
+        if repoArn != targetarn:
+            print('Not target ARN. Continuting')
+            continue
+        resp = codecommit.get_file(repositoryName='authorized_keys',
+                                   filePath='authorized_keys')
+        data = resp['fileContent'].decode("utf-8")
+        ddbitem = ddb.scan(TableName='key')  # ddbitem['Items']...
+        found = False
+        for item in ddbitem['Items']:  # should be only one anyway - whatever
+            if item['key']['S'] == data:
+                found = True
+                break
+        if found:
+            print('no change to keys. continuing')
+            continue
+        # Something's changed - let's make the update in DDB
+        ddb.put_item(TableName='key', Item={'key': {'S': data}})
+        for item in ddbitem['Items']:  # should be only one anyway - whatever
+            print('deleting old item')
+            ddb.delete_item(TableName='key', Key=item)
+
+    print('All records processed')
+
+    return {
+        'statusCode': 200,
+        'body': json.dumps('Processing complete')
+    }