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In order to verify the signature, it needs to be encoded as bytes.
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Before it only used `%H:%M:%S`. We need a date. Use
> %+ 2001-07-08T00:34:60.026490+09:30 ISO 8601 / RFC 3339 date & time format.
(https://docs.rs/chrono/0.4.0/chrono/format/strftime/index.html#specifiers)
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Stop writing this information to the response text and instead put it in
the program log file. Don't want to send back unnecessary information
when testing the Paddle webhook.
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Return a `Result` from the function to pass errors through.
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The new `request::verified()` takes POST params as a string as does all
the work needed to call `paddle::verify_signature()`.
This involves extracting the `p_signature` POST parameter to get the
signature, and getting the public key PEM.
Change `params::parse()` to return a
`BTreeMap<Cow<'a, str>, Cow<'a, str>>` instead of `String` keys &
values. This is because `paddle::verify_signature()` needs a `(<&str,
&str)` iterator. Actually, it still doesn't solve the problem because
the types don't match. We need to modify the input type of
`verify_signature()`, but at least this change gives us references.
Make `params` private to the crate because we no longer need to use it
in `main()`.
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We want a dictionary to be able to remove the Paddle `p_signature` entry.
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Otherwise it doesn't indicate the name of the environment variable in
the result output:
Error: Error(EnvVar(NotPresent), State { next_error: None, backtrace: InternalBacktrace { backtrace: None } })
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I had forgotten to commit the transaction, so the record I was trying to
insert wouldn't get persisted in the database.
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Manually check that our purchaser creation and database persistence
works.
Make `purchaser` entities public in order to call them.
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Realised that when we want a new purchaser, we always want to generate a
secret. This way we can call `new()` without having to call
`generate_secret()` at the call site.
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Get a file path from the `LOG_FILE` environment variable and use it for
log output.
Call `database::get_database_connection()` and log the error if it
fails.
Worried about exiting early from the FastCGI program, as DreamHost says
this causes problems
(https://help.dreamhost.com/hc/en-us/articles/217298967). But I don't
see how the program can continue without a database connection.
Return a `Result` from `main()` because it's easier to use the `?`
operator for errors that happen before logging is initialised.
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Function to establish a database connection using a connection pool.
Update `Purchaser::insert()` to take a `PooledConn` instead of a simple
`Conn`.
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Split up the code to get things a bit more organised. I want a function
to create a connection to the MySQL database and I don't want to lump it
in with the rest.
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I don't see myself using this since I have the `generate_secret()`
function now.
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The `random()` function I was using will sample a value from "the full
representable range"
(https://docs.rs/rand/0.5.5/rand/#the-two-step-process-to-get-a-random-value).
We should really be using longer numbers, so set the sample range to
integers above and including 1 billion.
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This new method generates a secret, which is a SHA1 digest of the
purchaser's name, email, and a random integer.
In order to use the `hexdigest()` method in the 'sha1' crate, I needed
to add the feature `std`
(https://docs.rs/sha1/0.6.0/sha1/struct.Sha1.html#method.hexdigest).
Needed to change the `secret` field to a `String` because otherwise the
generated digest string doesn't have a long enough lifetime to assign to
it.
Update `with_secret()` to use the new `String` type.
Update `insert()` to correctly handle the `Option` in `secret`.
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Haven't tested this at all so I have no idea if it works. Just getting a
draft committed.
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Starting to set up database interactions. We need a way to insert
purchasers into the database.
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Building on the example from the 'fastcgi' crate:
https://docs.rs/fastcgi/1.0.0/fastcgi/index.html
prints all request parameters and the request `Stdin`. Post parameters
are included in the stdin buffer.
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Generated with:
$ cargo new --bin license-generator
using
$ rustc --version
rustc 1.28.0 (9634041f0 2018-07-30)
This will be a FastCGI program to respond to a webhook from Paddle, and
respond with a generated license key file.
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