diff options
Diffstat (limited to 'vala-xmpp/src/module/xep/0027_pgp')
| -rw-r--r-- | vala-xmpp/src/module/xep/0027_pgp/flag.vala | 24 | ||||
| -rw-r--r-- | vala-xmpp/src/module/xep/0027_pgp/module.vala | 206 |
2 files changed, 0 insertions, 230 deletions
diff --git a/vala-xmpp/src/module/xep/0027_pgp/flag.vala b/vala-xmpp/src/module/xep/0027_pgp/flag.vala deleted file mode 100644 index 03844afa..00000000 --- a/vala-xmpp/src/module/xep/0027_pgp/flag.vala +++ /dev/null @@ -1,24 +0,0 @@ -using Gee; - -using Xmpp.Core; - -namespace Xmpp.Xep.Pgp { - -public class Flag : XmppStreamFlag { - public const string ID = "pgp"; - public HashMap<string, string> key_ids = new HashMap<string, string>(); - - public string? get_key_id(string jid) { return key_ids[get_bare_jid(jid)]; } - - public void set_key_id(string jid, string key) { key_ids[get_bare_jid(jid)] = key; } - - public static Flag? get_flag(XmppStream stream) { return (Flag?) stream.get_flag(NS_URI, ID); } - - public static bool has_flag(XmppStream stream) { return get_flag(stream) != null; } - - public override string get_ns() { return NS_URI; } - - public override string get_id() { return ID; } -} - -}
\ No newline at end of file diff --git a/vala-xmpp/src/module/xep/0027_pgp/module.vala b/vala-xmpp/src/module/xep/0027_pgp/module.vala deleted file mode 100644 index fee6b9e4..00000000 --- a/vala-xmpp/src/module/xep/0027_pgp/module.vala +++ /dev/null @@ -1,206 +0,0 @@ -using GPG; - -using Xmpp.Core; - -namespace Xmpp.Xep.Pgp { - private const string NS_URI = "jabber:x"; - private const string NS_URI_ENCRYPTED = NS_URI + ":encrypted"; - private const string NS_URI_SIGNED = NS_URI + ":signed"; - - public class Module : XmppStreamModule { - public const string ID = "0027_current_pgp_usage"; - - public signal void received_jid_key_id(XmppStream stream, string jid, string key_id); - - private static Object mutex = new Object(); - - private string? signed_status; - private string? own_key_id; - - public Module() { - GPG.check_version(); - signed_status = gpg_sign(""); - if (signed_status != null) own_key_id = gpg_verify(signed_status, ""); - } - - public bool encrypt(Message.Stanza message, string key_id) { - string? enc_body = gpg_encrypt(message.body, new string[] {key_id, own_key_id}); - if (enc_body != null) { - message.stanza.put_node(new StanzaNode.build("x", NS_URI_ENCRYPTED).add_self_xmlns().put_node(new StanzaNode.text(enc_body))); - message.body = "[This message is OpenPGP encrypted (see XEP-0027)]"; - return true; - } - return false; - } - - public string? get_cyphertext(Message.Stanza message) { - StanzaNode? x_node = message.stanza.get_subnode("x", NS_URI_ENCRYPTED); - return x_node == null ? null : x_node.get_string_content(); - } - - public override void attach(XmppStream stream) { - Presence.Module.require(stream); - Presence.Module.get_module(stream).received_presence.connect(on_received_presence); - Presence.Module.get_module(stream).pre_send_presence_stanza.connect(on_pre_send_presence_stanza); - Message.Module.require(stream); - Message.Module.get_module(stream).pre_received_message.connect(on_pre_received_message); - stream.add_flag(new Flag()); - } - - public override void detach(XmppStream stream) { - Presence.Module.get_module(stream).received_presence.disconnect(on_received_presence); - Presence.Module.get_module(stream).pre_send_presence_stanza.disconnect(on_pre_send_presence_stanza); - Message.Module.get_module(stream).pre_received_message.disconnect(on_pre_received_message); - } - - public static Module? get_module(XmppStream stream) { - return (Module?) stream.get_module(NS_URI, ID); - } - - public static void require(XmppStream stream) { - if (get_module(stream) == null) stream.add_module(new Module()); - } - - public override string get_ns() { return NS_URI; } - public override string get_id() { return ID; } - - private void on_received_presence(XmppStream stream, Presence.Stanza presence) { - StanzaNode x_node = presence.stanza.get_subnode("x", NS_URI_SIGNED); - if (x_node != null) { - string? sig = x_node.get_string_content(); - if (sig != null) { - string signed_data = presence.status == null ? "" : presence.status; - string? key_id = gpg_verify(sig, signed_data); - if (key_id != null) { - Flag.get_flag(stream).set_key_id(presence.from, key_id); - received_jid_key_id(stream, presence.from, key_id); - } - } - } - } - - private void on_pre_send_presence_stanza(XmppStream stream, Presence.Stanza presence) { - if (presence.type_ == Presence.Stanza.TYPE_AVAILABLE && signed_status != null) { - presence.stanza.put_node(new StanzaNode.build("x", NS_URI_SIGNED).add_self_xmlns().put_node(new StanzaNode.text(signed_status))); - } - } - - private void on_pre_received_message(XmppStream stream, Message.Stanza message) { - string? encrypted = get_cyphertext(message); - if (encrypted != null) { - MessageFlag flag = new MessageFlag(); - message.add_flag(flag); - string? decrypted = gpg_decrypt(encrypted); - if (decrypted != null) { - flag.decrypted = true; - message.body = decrypted; - } - } - } - - private static string? gpg_encrypt(string plain, string[] key_ids) { - lock (mutex) { - GPG.Context context; - GPGError.ErrorCode e = GPG.Context.Context(out context); if (e != GPGError.ErrorCode.NO_ERROR) return null; - context.set_armor(true); - - Key[] keys = new Key[key_ids.length]; - for (int i = 0; i < key_ids.length; i++) { - Key key; - e = context.get_key(key_ids[i], out key, false); if (e != GPGError.ErrorCode.NO_ERROR) return null; - keys[i] = key; - } - - GPG.Data plain_data; - e = GPG.Data.create_from_memory(out plain_data, plain.data, false); - GPG.Data enc_data; - e = GPG.Data.create(out enc_data); - e = context.op_encrypt(keys, GPG.EncryptFlags.ALWAYS_TRUST, plain_data, enc_data); - - string encr = get_string_from_data(enc_data); - int encryption_start = encr.index_of("\n\n") + 2; - return encr.substring(encryption_start, encr.length - "\n-----END PGP MESSAGE-----".length - encryption_start); - } - } - - private static string? gpg_decrypt(string enc) { - lock (mutex) { - string armor = "-----BEGIN PGP MESSAGE-----\n\n" + enc + "\n-----END PGP MESSAGE-----"; - - GPG.Data enc_data; - GPGError.ErrorCode e = GPG.Data.create_from_memory(out enc_data, armor.data, false); if (e != GPGError.ErrorCode.NO_ERROR) return null; - GPG.Data dec_data; - e = GPG.Data.create(out dec_data); if (e != GPGError.ErrorCode.NO_ERROR) return null; - GPG.Context context; - e = GPG.Context.Context(out context); if (e != GPGError.ErrorCode.NO_ERROR) return null; - e = context.op_decrypt(enc_data, dec_data); if (e != GPGError.ErrorCode.NO_ERROR) return null; - - string plain = get_string_from_data(dec_data); - return plain; - } - } - - private static string? gpg_verify(string sig, string signed_text) { - lock (mutex) { - string armor = "-----BEGIN PGP MESSAGE-----\n\n" + sig + "\n-----END PGP MESSAGE-----"; - - GPG.Data sig_data; - GPGError.ErrorCode e = GPG.Data.create_from_memory(out sig_data, armor.data, false); if (e != GPGError.ErrorCode.NO_ERROR) return null; - GPG.Data plain_data; - e = GPG.Data.create(out plain_data); if (e != GPGError.ErrorCode.NO_ERROR) return null; - GPG.Context context; - e = GPG.Context.Context(out context); if (e != GPGError.ErrorCode.NO_ERROR) return null; - e = context.op_verify(sig_data, null, plain_data); if (e != GPGError.ErrorCode.NO_ERROR) return null; - GPG.VerifyResult* verify_res = context.op_verify_result(); - if (verify_res == null || verify_res.signatures == null) return null; - return verify_res.signatures.fpr; - } - } - - private static string? gpg_sign(string status) { - lock (mutex) { - GPG.Data status_data; - GPGError.ErrorCode e = GPG.Data.create_from_memory(out status_data, status.data, false); if (e != GPGError.ErrorCode.NO_ERROR) return null; - GPG.Data signed_data; - e = GPG.Data.create(out signed_data); if (e != GPGError.ErrorCode.NO_ERROR) return null; - GPG.Context context; - e = GPG.Context.Context(out context); if (e != GPGError.ErrorCode.NO_ERROR) return null; - e = context.op_sign(status_data, signed_data, GPG.SigMode.CLEAR); if (e != GPGError.ErrorCode.NO_ERROR) return null; - - string signed = get_string_from_data(signed_data); - int signature_start = signed.index_of("-----BEGIN PGP SIGNATURE-----"); - signature_start = signed.index_of("\n\n", signature_start) + 2; - return signed.substring(signature_start, signed.length - "\n-----END PGP SIGNATURE-----".length - signature_start); - } - } - - private static string get_string_from_data(GPG.Data data) { - data.seek(0); - uint8[] buf = new uint8[256]; - ssize_t? len = null; - string res = ""; - do { - len = data.read(buf); - if (len > 0) { - string part = (string) buf; - part = part.substring(0, (long) len); - res += part; - } - } while (len > 0); - return res; - } - } - - public class MessageFlag : Message.MessageFlag { - public const string id = "pgp"; - - public bool decrypted = false; - - public static MessageFlag? get_flag(Message.Stanza message) { - return (MessageFlag) message.get_flag(NS_URI, id); - } - - public override string get_ns() { return NS_URI; } - public override string get_id() { return id; } - } -} |