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authorJörg Frings-Fürst <debian@jff-webhosting.net>2018-05-01 14:34:32 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2018-05-01 14:34:32 +0200
commit49120f48474fc8fdc2448c75d961bc238213cfac (patch)
tree05bcdb95d65a807cf0f1ffffd066c09074b5cf56 /plugins/common/OAuth1Support.vala
parent2492891f112caac6076ce49721d9d5d78a152c3a (diff)
New upstream version 0.28.2upstream/0.28.2
Diffstat (limited to 'plugins/common/OAuth1Support.vala')
-rw-r--r--plugins/common/OAuth1Support.vala233
1 files changed, 233 insertions, 0 deletions
diff --git a/plugins/common/OAuth1Support.vala b/plugins/common/OAuth1Support.vala
new file mode 100644
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+++ b/plugins/common/OAuth1Support.vala
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+/* Copyright 2016 Software Freedom Conservancy Inc.
+ * Copyright 2017 Jens Georg <mail@jensge.org>
+ *
+ * This software is licensed under the GNU Lesser General Public License
+ * (version 2.1 or later). See the COPYING file in this distribution.
+ */
+
+namespace Publishing.RESTSupport.OAuth1 {
+ internal const string ENCODE_RFC_3986_EXTRA = "!*'();:@&=+$,/?%#[] \\";
+
+ public class Session : Publishing.RESTSupport.Session {
+ private string? request_phase_token = null;
+ private string? request_phase_token_secret = null;
+ private string? access_phase_token = null;
+ private string? access_phase_token_secret = null;
+ private string? username = null;
+ private string? consumer_key = null;
+ private string? consumer_secret = null;
+
+ public Session(string? endpoint_uri = null) {
+ base(endpoint_uri);
+ }
+
+ public override bool is_authenticated() {
+ return (access_phase_token != null && access_phase_token_secret != null &&
+ username != null);
+ }
+
+ public void authenticate_from_persistent_credentials(string token, string secret,
+ string username) {
+ this.access_phase_token = token;
+ this.access_phase_token_secret = secret;
+ this.username = username;
+
+ this.authenticated();
+ }
+
+ public void deauthenticate() {
+ access_phase_token = null;
+ access_phase_token_secret = null;
+ username = null;
+ }
+
+ public void set_api_credentials(string consumer_key, string consumer_secret) {
+ this.consumer_key = consumer_key;
+ this.consumer_secret = consumer_secret;
+ }
+
+ public string sign_transaction(Publishing.RESTSupport.Transaction txn,
+ Publishing.RESTSupport.Argument[]? extra_arguments = null) {
+ string http_method = txn.get_method().to_string();
+
+ debug("signing transaction with parameters:");
+ debug("HTTP method = " + http_method);
+
+ Publishing.RESTSupport.Argument[] base_string_arguments = txn.get_arguments();
+
+ foreach (var arg in extra_arguments) {
+ base_string_arguments += arg;
+ }
+
+ Publishing.RESTSupport.Argument[] sorted_args =
+ Publishing.RESTSupport.Argument.sort(base_string_arguments);
+
+ var arguments_string = Argument.serialize_list(sorted_args);
+
+ string? signing_key = null;
+ if (access_phase_token_secret != null) {
+ debug("access phase token secret available; using it as signing key");
+
+ signing_key = consumer_secret + "&" + access_phase_token_secret;
+ } else if (request_phase_token_secret != null) {
+ debug("request phase token secret available; using it as signing key");
+
+ signing_key = consumer_secret + "&" + request_phase_token_secret;
+ } else {
+ debug("neither access phase nor request phase token secrets available; using API " +
+ "key as signing key");
+
+ signing_key = consumer_secret + "&";
+ }
+
+ string signature_base_string = http_method + "&" + Soup.URI.encode(
+ txn.get_endpoint_url(), ENCODE_RFC_3986_EXTRA) + "&" +
+ Soup.URI.encode(arguments_string, ENCODE_RFC_3986_EXTRA);
+
+ debug("signature base string = '%s'", signature_base_string);
+
+ debug("signing key = '%s'", signing_key);
+
+ // compute the signature
+ string signature = RESTSupport.hmac_sha1(signing_key, signature_base_string);
+ signature = Soup.URI.encode(signature, ENCODE_RFC_3986_EXTRA);
+
+ debug("signature = '%s'", signature);
+
+ return signature;
+ }
+
+ public void set_request_phase_credentials(string token, string secret) {
+ this.request_phase_token = token;
+ this.request_phase_token_secret = secret;
+ }
+
+ public void set_access_phase_credentials(string token, string secret, string username) {
+ this.access_phase_token = token;
+ this.access_phase_token_secret = secret;
+ this.username = username;
+
+ authenticated();
+ }
+
+ public string get_oauth_nonce() {
+ TimeVal currtime = TimeVal();
+ currtime.get_current_time();
+
+ return Checksum.compute_for_string(ChecksumType.MD5, currtime.tv_sec.to_string() +
+ currtime.tv_usec.to_string());
+ }
+
+ public string get_oauth_timestamp() {
+ return GLib.get_real_time().to_string().substring(0, 10);
+ }
+
+ public string get_consumer_key() {
+ assert(consumer_key != null);
+ return consumer_key;
+ }
+
+ public string get_request_phase_token() {
+ assert(request_phase_token != null);
+ return request_phase_token;
+ }
+
+ public string get_access_phase_token() {
+ assert(access_phase_token != null);
+ return access_phase_token;
+ }
+
+ public bool has_access_phase_token() {
+ return access_phase_token != null;
+ }
+
+ public string get_access_phase_token_secret() {
+ assert(access_phase_token_secret != null);
+ return access_phase_token_secret;
+ }
+
+ public string get_username() {
+ assert(is_authenticated());
+ return username;
+ }
+ }
+
+ public class Transaction : Publishing.RESTSupport.Transaction {
+ public Transaction(Session session, Publishing.RESTSupport.HttpMethod method =
+ Publishing.RESTSupport.HttpMethod.POST) {
+ base(session, method);
+ setup_arguments();
+ }
+
+ public Transaction.with_uri(Session session, string uri,
+ Publishing.RESTSupport.HttpMethod method = Publishing.RESTSupport.HttpMethod.POST) {
+ base.with_endpoint_url(session, uri, method);
+ setup_arguments();
+ }
+
+ private void setup_arguments() {
+ var session = (Session) get_parent_session();
+
+ add_argument("oauth_nonce", session.get_oauth_nonce());
+ add_argument("oauth_signature_method", "HMAC-SHA1");
+ add_argument("oauth_version", "1.0");
+ add_argument("oauth_timestamp", session.get_oauth_timestamp());
+ add_argument("oauth_consumer_key", session.get_consumer_key());
+ if (session.has_access_phase_token()) {
+ add_argument("oauth_token", session.get_access_phase_token());
+ }
+ }
+
+
+ public override void execute() throws Spit.Publishing.PublishingError {
+ var signature = ((Session) get_parent_session()).sign_transaction(this);
+ add_argument("oauth_signature", signature);
+
+ base.execute();
+ }
+ }
+
+ public class UploadTransaction : Publishing.RESTSupport.UploadTransaction {
+ protected unowned Publishing.RESTSupport.OAuth1.Session session;
+ private Publishing.RESTSupport.Argument[] auth_header_fields;
+
+ public UploadTransaction(Publishing.RESTSupport.OAuth1.Session session,
+ Spit.Publishing.Publishable publishable,
+ string endpoint_uri) {
+ base.with_endpoint_url(session, publishable, endpoint_uri);
+
+ this.auth_header_fields = new Publishing.RESTSupport.Argument[0];
+ this.session = session;
+
+ add_authorization_header_field("oauth_nonce", session.get_oauth_nonce());
+ add_authorization_header_field("oauth_signature_method", "HMAC-SHA1");
+ add_authorization_header_field("oauth_version", "1.0");
+ add_authorization_header_field("oauth_timestamp", session.get_oauth_timestamp());
+ add_authorization_header_field("oauth_consumer_key", session.get_consumer_key());
+ add_authorization_header_field("oauth_token", session.get_access_phase_token());
+ }
+
+ public void add_authorization_header_field(string key, string value) {
+ auth_header_fields += new Publishing.RESTSupport.Argument(key, value);
+ }
+
+ public string get_authorization_header_string() {
+ return "OAuth " + Argument.serialize_list(auth_header_fields, true, ", ");
+ }
+
+ public void authorize() {
+ var signature = session.sign_transaction(this, auth_header_fields);
+ add_authorization_header_field("oauth_signature", signature);
+
+
+ string authorization_header = get_authorization_header_string();
+
+ debug("executing upload transaction: authorization header string = '%s'",
+ authorization_header);
+ add_header("Authorization", authorization_header);
+
+ }
+ }
+}
+
+