Signed-off-by: Kevin Morris <kevr@0cost.org>

There was one blazing issue with the previous implementation regardless
of the multiple records: we were generating fingerprints by storing
the key into a file and reading it with ssh-keygen. This is absolutely
terrible and was not meant to be left around (it was forgotten, my bad).

Took this opportunity to clean up a few things:
- simplify pubkey validation
- centralize things a bit better

Signed-off-by: Kevin Morris <kevr@0cost.org>

This patch cleans up aurweb.templates and removes direct
module-level initialization of the environment.

Signed-off-by: Kevin Morris <kevr@0cost.org>

We were allowing erroneous URLs through, raising exceptions,
from e.g. `http://[localhost:8444/blah`. This patch catches
any ValueErrors raised during the parse process and returns
False, indicating that the validation failed.

This patch also adds testing specifically for `util.valid_homepage`.
We didn't have specific testing for this before; this will allow us
to catch regressions in this area.

Closes #250



Signed-off-by: Kevin Morris <kevr@0cost.org>

This gets raised when a client closes a connection before receiving
a valid response; this is not controllable from our side.

Signed-off-by: Kevin Morris <kevr@0cost.org>

- Added aurweb.util.git_search.
    - Decoupled away from rendercomment for easier testability.
- Added aurweb.testing.git.GitRepository.
- Added templates/testing/{PKGBUILD,SRCINFO}.j2.
- Added aurweb.testing.git.GitRepository + `git` pytest fixture

Signed-off-by: Kevin Morris <kevr@0cost.org>

Introduces `aurweb.defaults` and `aurweb.filters`.

`aurweb.filters` is a location developers can put their additional
Jinja2 filters and/or functions. We should slowly move all of our
filters over here, where it makes sense.

`aurweb.defaults` is a new module which hosts some default constants
and utility functions, starting with offsets (O) and per page values
(PP).

As far as the new GET /requests is concerned, we match up here to
PHP's implementation, with some minor improvements:

Improvements:

* PP on this page is now configurable: 50 (default), 100, or 250.
    * Example: `https://localhost:8444/requests?PP=250`

Modifications:

* The pagination is a bit different, but serves the exact same purpose.
* "Last" no longer goes to an empty page.
    * Closes: #14



Signed-off-by: Kevin Morris <kevr@0cost.org>

The new `extend_query` and `urlencode` filters are way cleaner ways
to achieve what we did with `dedupe_qs`.

Signed-off-by: Kevin Morris <kevr@0cost.org>

The first addition, extend_query, can be used to take an existing
query parameter dictionary and inject an *additions as replacement
key/value pairs.

The second, to_qs, converts a query parameter dictionary to
a query string in the form "a=b&c=d".

These two functions simplify and make dedupe_qs and quote_plus more
efficient in terms of constructing custom query string overrides.

Signed-off-by: Kevin Morris <kevr@0cost.org>

Implement a `number_format` equivalent to PHP's version.

Signed-off-by: Kevin Morris <kevr@0cost.org>

Signed-off-by: Kevin Morris <kevr@0cost.org>

Signed-off-by: Kevin Morris <kevr@0cost.org>

Signed-off-by: Kevin Morris <kevr@0cost.org>