Adding upstream version 1:9.6p1.upstream/1%9.6p1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 223 insertions, 0 deletions

diff --git a/packet.h b/packet.h
new file mode 100644
index 0000000..b2bc321
--- /dev/null
+++ b/packet.h
@@ -0,0 +1,223 @@
+/* $OpenBSD: packet.h,v 1.96 2023/12/18 14:45:17 djm Exp $ */
+
+/*
+ * Author: Tatu Ylonen <ylo@cs.hut.fi>
+ * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
+ *                    All rights reserved
+ * Interface for the packet protocol functions.
+ *
+ * As far as I am concerned, the code I have written for this software
+ * can be used freely for any purpose.  Any derived versions of this
+ * software must be clearly marked as such, and if the derived work is
+ * incompatible with the protocol description in the RFC file, it must be
+ * called by a name other than "ssh" or "Secure Shell".
+ */
+
+#ifndef PACKET_H
+#define PACKET_H
+
+#include <termios.h>
+
+#ifdef WITH_OPENSSL
+# include <openssl/bn.h>
+# ifdef OPENSSL_HAS_ECC
+#  include <openssl/ec.h>
+# else /* OPENSSL_HAS_ECC */
+#  define EC_KEY	void
+#  define EC_GROUP	void
+#  define EC_POINT	void
+# endif /* OPENSSL_HAS_ECC */
+#else /* WITH_OPENSSL */
+# define BIGNUM		void
+# define EC_KEY		void
+# define EC_GROUP	void
+# define EC_POINT	void
+#endif /* WITH_OPENSSL */
+
+#include <signal.h>
+#include "openbsd-compat/sys-queue.h"
+
+struct kex;
+struct sshkey;
+struct sshbuf;
+struct session_state;	/* private session data */
+
+#include "dispatch.h"	/* typedef, DISPATCH_MAX */
+
+struct key_entry {
+	TAILQ_ENTRY(key_entry) next;
+	struct sshkey *key;
+};
+
+struct ssh {
+	/* Session state */
+	struct session_state *state;
+
+	/* Key exchange */
+	struct kex *kex;
+
+	/* cached local and remote ip addresses and ports */
+	char *remote_ipaddr;
+	int remote_port;
+	char *local_ipaddr;
+	int local_port;
+	char *rdomain_in;
+
+	/* Optional preamble for log messages (e.g. username) */
+	char *log_preamble;
+
+	/* Dispatcher table */
+	dispatch_fn *dispatch[DISPATCH_MAX];
+	/* number of packets to ignore in the dispatcher */
+	int dispatch_skip_packets;
+
+	/* datafellows */
+	int compat;
+
+	/* Lists for private and public keys */
+	TAILQ_HEAD(, key_entry) private_keys;
+	TAILQ_HEAD(, key_entry) public_keys;
+
+	/* Client/Server authentication context */
+	void *authctxt;
+
+	/* Channels context */
+	struct ssh_channels *chanctxt;
+
+	/* APP data */
+	void *app_data;
+};
+
+typedef int (ssh_packet_hook_fn)(struct ssh *, struct sshbuf *,
+    u_char *, void *);
+
+struct ssh *ssh_alloc_session_state(void);
+struct ssh *ssh_packet_set_connection(struct ssh *, int, int);
+void     ssh_packet_set_timeout(struct ssh *, int, int);
+int	 ssh_packet_stop_discard(struct ssh *);
+int	 ssh_packet_connection_af(struct ssh *);
+void     ssh_packet_set_nonblocking(struct ssh *);
+int      ssh_packet_get_connection_in(struct ssh *);
+int      ssh_packet_get_connection_out(struct ssh *);
+void     ssh_packet_close(struct ssh *);
+void	 ssh_packet_set_input_hook(struct ssh *, ssh_packet_hook_fn *, void *);
+void	 ssh_packet_clear_keys(struct ssh *);
+void	 ssh_clear_newkeys(struct ssh *, int);
+
+int	 ssh_packet_is_rekeying(struct ssh *);
+int	 ssh_packet_check_rekey(struct ssh *);
+void     ssh_packet_set_protocol_flags(struct ssh *, u_int);
+u_int	 ssh_packet_get_protocol_flags(struct ssh *);
+void	 ssh_packet_set_tos(struct ssh *, int);
+void     ssh_packet_set_interactive(struct ssh *, int, int, int);
+int      ssh_packet_is_interactive(struct ssh *);
+void     ssh_packet_set_server(struct ssh *);
+void     ssh_packet_set_authenticated(struct ssh *);
+void     ssh_packet_set_mux(struct ssh *);
+int	 ssh_packet_get_mux(struct ssh *);
+int	 ssh_packet_set_log_preamble(struct ssh *, const char *, ...)
+    __attribute__((format(printf, 2, 3)));
+
+int	 ssh_packet_log_type(u_char);
+
+int	 ssh_packet_send2_wrapped(struct ssh *);
+int	 ssh_packet_send2(struct ssh *);
+
+int      ssh_packet_read(struct ssh *);
+int      ssh_packet_read_poll(struct ssh *);
+int ssh_packet_read_poll2(struct ssh *, u_char *, u_int32_t *seqnr_p);
+int	 ssh_packet_process_incoming(struct ssh *, const char *buf, u_int len);
+int	 ssh_packet_process_read(struct ssh *, int);
+int      ssh_packet_read_seqnr(struct ssh *, u_char *, u_int32_t *seqnr_p);
+int      ssh_packet_read_poll_seqnr(struct ssh *, u_char *, u_int32_t *seqnr_p);
+
+const void *ssh_packet_get_string_ptr(struct ssh *, u_int *length_ptr);
+void     ssh_packet_disconnect(struct ssh *, const char *fmt, ...)
+	__attribute__((format(printf, 2, 3)))
+	__attribute__((noreturn));
+void     ssh_packet_send_debug(struct ssh *, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
+
+int	 ssh_set_newkeys(struct ssh *, int mode);
+void	 ssh_packet_get_bytes(struct ssh *, u_int64_t *, u_int64_t *);
+
+int	 ssh_packet_write_poll(struct ssh *);
+int	 ssh_packet_write_wait(struct ssh *);
+int      ssh_packet_have_data_to_write(struct ssh *);
+int      ssh_packet_not_very_much_data_to_write(struct ssh *);
+int	 ssh_packet_interactive_data_to_write(struct ssh *);
+
+int	 ssh_packet_connection_is_on_socket(struct ssh *);
+int	 ssh_packet_remaining(struct ssh *);
+
+void	 ssh_tty_make_modes(struct ssh *, int, struct termios *);
+void	 ssh_tty_parse_modes(struct ssh *, int);
+
+void	 ssh_packet_set_alive_timeouts(struct ssh *, int);
+int	 ssh_packet_inc_alive_timeouts(struct ssh *);
+int	 ssh_packet_set_maxsize(struct ssh *, u_int);
+u_int	 ssh_packet_get_maxsize(struct ssh *);
+
+int	 ssh_packet_get_state(struct ssh *, struct sshbuf *);
+int	 ssh_packet_set_state(struct ssh *, struct sshbuf *);
+
+const char *ssh_remote_ipaddr(struct ssh *);
+int	 ssh_remote_port(struct ssh *);
+const char *ssh_local_ipaddr(struct ssh *);
+int	 ssh_local_port(struct ssh *);
+const char *ssh_packet_rdomain_in(struct ssh *);
+
+void	 ssh_packet_set_rekey_limits(struct ssh *, u_int64_t, u_int32_t);
+time_t	 ssh_packet_get_rekey_timeout(struct ssh *);
+
+void	*ssh_packet_get_input(struct ssh *);
+void	*ssh_packet_get_output(struct ssh *);
+
+/* new API */
+int	sshpkt_start(struct ssh *ssh, u_char type);
+int	sshpkt_send(struct ssh *ssh);
+int     sshpkt_disconnect(struct ssh *, const char *fmt, ...)
+	    __attribute__((format(printf, 2, 3)));
+int	sshpkt_add_padding(struct ssh *, u_char);
+void	sshpkt_fatal(struct ssh *ssh, int r, const char *fmt, ...)
+	    __attribute__((format(printf, 3, 4)))
+	    __attribute__((noreturn));
+int	sshpkt_msg_ignore(struct ssh *, u_int);
+
+int	sshpkt_put(struct ssh *ssh, const void *v, size_t len);
+int	sshpkt_putb(struct ssh *ssh, const struct sshbuf *b);
+int	sshpkt_put_u8(struct ssh *ssh, u_char val);
+int	sshpkt_put_u32(struct ssh *ssh, u_int32_t val);
+int	sshpkt_put_u64(struct ssh *ssh, u_int64_t val);
+int	sshpkt_put_string(struct ssh *ssh, const void *v, size_t len);
+int	sshpkt_put_cstring(struct ssh *ssh, const void *v);
+int	sshpkt_put_stringb(struct ssh *ssh, const struct sshbuf *v);
+int	sshpkt_put_ec(struct ssh *ssh, const EC_POINT *v, const EC_GROUP *g);
+int	sshpkt_put_bignum2(struct ssh *ssh, const BIGNUM *v);
+
+int	sshpkt_get(struct ssh *ssh, void *valp, size_t len);
+int	sshpkt_get_u8(struct ssh *ssh, u_char *valp);
+int	sshpkt_get_u32(struct ssh *ssh, u_int32_t *valp);
+int	sshpkt_get_u64(struct ssh *ssh, u_int64_t *valp);
+int	sshpkt_get_string(struct ssh *ssh, u_char **valp, size_t *lenp);
+int	sshpkt_get_string_direct(struct ssh *ssh, const u_char **valp, size_t *lenp);
+int	sshpkt_peek_string_direct(struct ssh *ssh, const u_char **valp, size_t *lenp);
+int	sshpkt_get_cstring(struct ssh *ssh, char **valp, size_t *lenp);
+int	sshpkt_getb_froms(struct ssh *ssh, struct sshbuf **valp);
+int	sshpkt_get_ec(struct ssh *ssh, EC_POINT *v, const EC_GROUP *g);
+int	sshpkt_get_bignum2(struct ssh *ssh, BIGNUM **valp);
+int	sshpkt_get_end(struct ssh *ssh);
+void	sshpkt_fmt_connection_id(struct ssh *ssh, char *s, size_t l);
+const u_char	*sshpkt_ptr(struct ssh *, size_t *lenp);
+
+#if !defined(WITH_OPENSSL)
+# undef BIGNUM
+# undef EC_KEY
+# undef EC_GROUP
+# undef EC_POINT
+#elif !defined(OPENSSL_HAS_ECC)
+# undef EC_KEY
+# undef EC_GROUP
+# undef EC_POINT
+#endif
+
+#endif				/* PACKET_H */