1 files changed, 160 insertions, 0 deletions

diff --git a/other/guess-who/ssh.h b/other/guess-who/ssh.h
new file mode 100644
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+++ b/other/guess-who/ssh.h
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2002,2003 Sebastian Krahmer.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Sebastian Krahmer.
+ * 4. The name Sebastian Krahmer may not be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#ifndef __ssh_h__
+#define __ssh_h__
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <string>
+
+extern "C" {
+#include <openssl/des.h>
+};
+#include <pthread.h>
+
+
+#define SSH_MSG_DISCONNECT                             1
+#define SSH_MSG_IGNORE                                 2
+#define SSH_MSG_UNIMPLEMENTED                          3
+#define SSH_MSG_DEBUG                                  4
+#define SSH_MSG_SERVICE_REQUEST                        5
+#define SSH_MSG_SERVICE_ACCEPT                         6
+
+
+#define SSH_MSG_KEXINIT                                20
+#define SSH_MSG_NEWKEYS                                21
+
+#define SSH_MSG_KEXDH_INIT                             30
+#define SSH_MSG_KEXDH_REPLY                            31
+
+#define SSH_MSG_KEX_DH_GEX_REQUEST_OLD                 30
+#define SSH_MSG_KEX_DH_GEX_GROUP                       31
+#define SSH_MSG_KEX_DH_GEX_INIT                        32
+#define SSH_MSG_KEX_DH_GEX_REPLY                       33
+#define SSH_MSG_KEX_DH_GEX_REQUEST                     34
+
+#define SSH_MSG_USERAUTH_REQUEST                       50
+#define SSH_MSG_USERAUTH_FAILURE                       51
+#define SSH_MSG_USERAUTH_SUCCESS                       52
+#define SSH_MSG_USERAUTH_BANNER                        53
+
+
+#define SSH_MSG_USERAUTH_PK_OK                         60
+#define SSH_MSG_USERAUTH_PASSWD_CHANGEREQ              60
+#define SSH_MSG_USERAUTH_INFO_REQUEST                  60
+#define SSH_MSG_USERAUTH_INFO_RESPONSE                 61
+
+
+class SSH2 {
+private:
+        // socket
+        int peer;
+
+        // packet Seq No.
+        u_int32_t seq;
+
+        // whether crypto is already enabled
+        bool use_crypto;
+        std::string error;
+
+        // the shared secret which is output of DH exchange
+        unsigned char *shared_secret;
+        char d_banner[128];
+        int shared_secret_len;
+
+        // The keys for sending and receiving respectively
+        des_key_schedule s_key1;
+        des_key_schedule s_key2;
+        des_key_schedule s_key3;
+
+        des_key_schedule r_key1;
+        des_key_schedule r_key2;
+        des_key_schedule r_key3;
+
+        // The IV's for sending and receiving
+        des_cblock s_iv;
+        des_cblock r_iv;
+
+        // mac keys for MAC computation; sedning+receiving
+        unsigned char s_mac[20], r_mac[20];
+
+        // Data to hash to get session_id
+        unsigned char *to_hash;
+        size_t to_hash_len;
+
+        // could be larger, but we use just SHA1
+        unsigned char session_id[20];
+
+        int debug;
+
+        int derive_keys();
+
+        int hash_helper(const char *, unsigned char[20], unsigned char[20], bool);
+
+protected:
+        int packet_write(const void *, size_t);
+
+        int packet_read(unsigned char *plain_buf, size_t pblen, size_t *n);
+public:
+        SSH2() : seq(0), use_crypto(0),
+                 shared_secret(NULL), to_hash(NULL), to_hash_len(0), debug(0) {}
+
+        ~SSH2() { free(to_hash); delete [] shared_secret; }
+
+        const char *why() { return error.c_str(); }
+
+        const char *banner() { return d_banner; }
+
+        int set_socket(int s) {peer = s; return s; }
+
+        int get_socket() { return peer; }
+
+        int banner_exchange();
+
+        int kex_init();
+
+        int dh_exchange();
+
+        int newkeys();
+
+        int doit() {return 0; }
+
+        int userauth_passwd(const char *, const char *);
+
+        int userauth_pubkey(const char *user, const char *keyfile);
+};
+
+
+#endif
+
+
+