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authorFelix Fietkau <nbd@openwrt.org>2008-12-24 10:42:12 +0000
committerFelix Fietkau <nbd@openwrt.org>2008-12-24 10:42:12 +0000
commit2d86ea2a1d66045472b405d7395a9732f3340f94 (patch)
tree44d30dc88e3fd191ab22e729a32c1267381af70b /package/ead/src/ead.h
parent067e900705377b83a21fd7cb0cebd9f850e8d379 (diff)
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add the 'ead' package (emergency access daemon), which can provide remote access to your device, even if the ip and firewall settings are broken
SVN-Revision: 13738
Diffstat (limited to 'package/ead/src/ead.h')
-rw-r--r--package/ead/src/ead.h134
1 files changed, 134 insertions, 0 deletions
diff --git a/package/ead/src/ead.h b/package/ead/src/ead.h
new file mode 100644
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--- /dev/null
+++ b/package/ead/src/ead.h
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __EAD_H
+#define __EAD_H
+
+#define EAD_DEBUGLEVEL 1
+
+#include <stdint.h>
+#include <stddef.h>
+
+#ifndef MAXSALTLEN
+#define MAXSALTLEN 32
+#endif
+
+#define EAD_PORT 56026UL
+#define EAD_MAGIC 3671771902UL
+#define EAD_CMD_TIMEOUT 10
+
+#define EAD_MAX_IV_INCR 128
+
+/* request/response types */
+/* response id == request id + 1 */
+enum ead_type {
+ EAD_TYPE_PING,
+ EAD_TYPE_PONG,
+
+ EAD_TYPE_SET_USERNAME,
+ EAD_TYPE_ACK_USERNAME,
+
+ EAD_TYPE_GET_PRIME,
+ EAD_TYPE_PRIME,
+
+ EAD_TYPE_SEND_A,
+ EAD_TYPE_SEND_B,
+
+ EAD_TYPE_SEND_AUTH,
+ EAD_TYPE_DONE_AUTH,
+
+ EAD_TYPE_SEND_CMD,
+ EAD_TYPE_RESULT_CMD,
+
+ EAD_TYPE_LAST
+};
+
+enum ead_auth_type {
+ EAD_AUTH_DEFAULT,
+ EAD_AUTH_MD5
+};
+
+enum ead_cmd_type {
+ EAD_CMD_NORMAL,
+ EAD_CMD_BACKGROUND,
+ EAD_CMD_LAST
+};
+
+struct ead_msg_pong {
+ uint16_t auth_type;
+ char name[];
+} __attribute__((packed));
+
+struct ead_msg_number {
+ uint8_t id;
+ unsigned char data[];
+} __attribute__((packed));
+
+struct ead_msg_salt {
+ uint8_t prime;
+ uint8_t len;
+ unsigned char salt[MAXSALTLEN];
+ unsigned char ext_salt[MAXSALTLEN];
+} __attribute__((packed));
+
+struct ead_msg_user {
+ char username[32];
+} __attribute__((packed));
+
+struct ead_msg_auth {
+ unsigned char data[20];
+} __attribute__((packed));
+
+struct ead_msg_cmd {
+ uint8_t type;
+ uint16_t timeout;
+ unsigned char data[];
+} __attribute__((packed));
+
+struct ead_msg_cmd_data {
+ uint8_t done;
+ unsigned char data[];
+} __attribute__((packed));
+
+struct ead_msg_encrypted {
+ uint32_t hash[5];
+ uint32_t iv;
+ uint8_t pad;
+ union {
+ struct ead_msg_cmd cmd;
+ struct ead_msg_cmd_data cmd_data;
+ } data[];
+} __attribute__((packed));
+
+
+#define EAD_DATA(_msg, _type) (&((_msg)->data[0]._type))
+#define EAD_ENC_DATA(_msg, _type) (&((_msg)->data[0].enc.data[0]._type))
+
+struct ead_msg {
+ uint32_t magic;
+ uint32_t len;
+ uint32_t type;
+ uint16_t nid; /* node id */
+ uint16_t tid; /* transaction id */
+ union {
+ struct ead_msg_pong pong;
+ struct ead_msg_user user;
+ struct ead_msg_number number;
+ struct ead_msg_auth auth;
+ struct ead_msg_salt salt;
+ struct ead_msg_encrypted enc;
+ } data[];
+} __attribute__((packed));
+
+
+#endif