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epriestley 0308d580d7 Deactivate SSH keys instead of destroying them completely
Summary:
Ref T10917. Currently, when you delete an SSH key, we really truly delete it forever.

This isn't very consistent with other applications, but we built this stuff a long time ago before we were as rigorous about retaining data and making it auditable.

In partiular, destroying data isn't good for auditing after security issues, since it means we can't show you logs of any changes an attacker might have made to your keys.

To prepare to improve this, stop destoying data. This will allow later changes to become transaction-oriented and show normal transaction logs.

The tricky part here is that we have a `UNIQUE KEY` on the public key part of the key.

Instead, I changed this to `UNIQUE (key, isActive)`, where `isActive` is a nullable boolean column. This works because MySQL does not enforce "unique" if part of the key is `NULL`.

So you can't have two rows with `("A", 1)`, but you can have as many rows as you want with `("A", null)`. This lets us keep the "each key may only be active for one user/object" rule without requiring us to delete any data.

Test Plan:
- Ran schema changes.
- Viewed public keys.
- Tried to add a duplicate key, got rejected (already associated with another object).
- Deleted SSH key.
- Verified that the key was no longer actually deleted from the database, just marked inactive (in future changes, I'll update the UI to be more clear about this).
- Uploaded a new copy of the same public key, worked fine (no duplicate key rejection).
- Tried to upload yet another copy, got rejected.
- Generated a new keypair.
- Tried to upload a duplicate to an Almanac device, got rejected.
- Generated a new pair for a device.
- Trusted a device key.
- Untrusted a device key.
- "Deleted" a device key.
- Tried to trust a deleted device key, got "inactive" message.
- Ran `bin/ssh-auth`, got good output with unique keys.
- Ran `cat ~/.ssh/id_rsa.pub | ./bin/ssh-auth-key`, got good output with one key.
- Used `auth.querypublickeys` Conduit method to query keys, got good active keys.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10917

Differential Revision: https://secure.phabricator.com/D15943
2016-05-18 14:54:28 -07:00
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almanac Use PhutilClassMapQuery instead of PhutilSymbolLoader 2015-08-14 07:49:01 +10:00
cache Use PhutilClassMapQuery instead of PhutilSymbolLoader 2015-08-14 07:49:01 +10:00
calendar Change double quotes to single quotes. 2014-06-09 11:36:50 -07:00
celerity Remove defunt project image choices 2016-01-19 08:50:59 -08:00
daemon Use PhutilClassMapQuery instead of PhutilSymbolLoader 2015-08-14 07:49:01 +10:00
diviner Use PhutilClassMapQuery instead of PhutilSymbolLoader 2015-08-14 07:49:01 +10:00
drydock Use PhutilClassMapQuery instead of PhutilSymbolLoader 2015-08-14 07:49:01 +10:00
fact Use PhutilClassMapQuery instead of PhutilSymbolLoader 2015-08-14 07:49:01 +10:00
files Use PhutilClassMapQuery instead of PhutilSymbolLoader 2015-08-14 07:49:01 +10:00
fpm Delete license headers from files 2012-11-05 11:16:51 -08:00
install Clean up some old "www.phabricator.com" references 2015-07-07 13:35:57 -07:00
lipsum Improve bin/lipsum UX 2015-12-24 09:06:35 -08:00
mail Use PhutilClassMapQuery instead of PhutilSymbolLoader 2015-08-14 07:49:01 +10:00
repository Remove dependence on callsigns from bin/commit-hook 2016-02-17 16:50:36 -08:00
search Use PhutilClassMapQuery instead of PhutilSymbolLoader 2015-08-14 07:49:01 +10:00
setup Provide bin/nuance import and ngram indexes for sources 2016-03-08 10:30:24 -08:00
sms Use PhutilClassMapQuery instead of PhutilSymbolLoader 2015-08-14 07:49:01 +10:00
sql Give bin/storage some replica-aware options 2016-04-14 13:23:35 -07:00
ssh Deactivate SSH keys instead of destroying them completely 2016-05-18 14:54:28 -07:00
symbols Update import/clear symbols scripts for callsigns 2016-02-18 09:55:57 -08:00
user Add "Mailing List" users 2015-06-03 18:42:33 -07:00
util phtize all the things 2015-05-22 21:16:39 +10:00
__init_script__.php phtize all the things 2015-05-22 21:16:39 +10:00