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HTTP client library, with support for middleware and multiple adapters.
Security advisory:
This version has known vulnerabilities.
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lib/tesla/middleware/basic_auth.ex
defmodule Tesla.Middleware.BasicAuth do
@moduledoc """
Basic authentication middleware.
[Wiki on the topic](https://en.wikipedia.org/wiki/Basic_access_authentication)
## Examples
```
defmodule MyClient do
use Tesla
# static configuration
plug Tesla.Middleware.BasicAuth, username: "user", password: "pass"
# dynamic user & pass
def new(username, password, opts \\\\ %{}) do
Tesla.client [
{Tesla.Middleware.BasicAuth, Map.merge(%{username: username, password: password}, opts)}
]
end
end
```
## Options
- `:username` - username (defaults to `""`)
- `:password` - password (defaults to `""`)
"""
@behaviour Tesla.Middleware
@impl Tesla.Middleware
def call(env, next, opts) do
opts = opts || %{}
env
|> Tesla.put_headers(authorization_header(opts))
|> Tesla.run(next)
end
defp authorization_header(opts) do
opts
|> authorization_vars()
|> encode()
|> create_header()
end
defp authorization_vars(opts) do
%{
username: opts[:username] || "",
password: opts[:password] || ""
}
end
defp create_header(auth) do
[{"authorization", "Basic #{auth}"}]
end
defp encode(%{username: username, password: password}) do
Base.encode64("#{username}:#{password}")
end
end