An Erlang OAuth implementation

Quick start (client usage)

$ make
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$ erl -pa ebin -s crypto -s inets
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1> Consumer = {"key", "secret", hmac_sha1}.
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2> RequestTokenURL = "http://term.ie/oauth/example/request_token.php".
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3> {ok, RequestTokenResponse} = oauth:get(RequestTokenURL, [], Consumer).
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4> RequestTokenParams = oauth:params_decode(RequestTokenResponse).
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5> RequestToken = oauth:token(RequestTokenParams).
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6> RequestTokenSecret = oauth:token_secret(RequestTokenParams).
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7> AccessTokenURL = "http://term.ie/oauth/example/access_token.php".
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8> {ok, AccessTokenResponse} = oauth:get(AccessTokenURL, [], Consumer, RequestToken, RequestTokenSecret).
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9> AccessTokenParams = oauth:params_decode(AccessTokenResponse).
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10> AccessToken = oauth:token(AccessTokenParams).
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11> AccessTokenSecret = oauth:token_secret(AccessTokenParams).
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12> URL = "http://term.ie/oauth/example/echo_api.php".
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13> {ok, Response} = oauth:get(URL, [{"hello", "world"}], Consumer, AccessToken, AccessTokenSecret).
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14> oauth:params_decode(Response).
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Notes

Consumer credentials are represented as follows:

{Key::string(), Secret::string(), plaintext}

{Key::string(), Secret::string(), hmac_sha1}

{Key::string(), RSAPrivateKeyPath::string(), rsa_sha1}  % client side

{Key::string(), RSACertificatePath::string(), rsa_sha1}  % server side

Erlang/OTP R14B or greater is required for RSA-SHA1

The percent encoding/decoding implementations are based on ibrowse

Example client/server code: github.com/tim/erlang-oauth-examples

Unit tests: github.com/tim/erlang-oauth-tests