Put ssh back into the repository
Change-Id: I23324372188fa6ed3f93a32b84365f5df6367590
diff --git a/readconf.h b/readconf.h
new file mode 100644
index 0000000..5944cff
--- /dev/null
+++ b/readconf.h
@@ -0,0 +1,161 @@
+/* $OpenBSD: readconf.h,v 1.90 2011/05/24 07:15:47 djm Exp $ */
+
+/*
+ * Author: Tatu Ylonen <ylo@cs.hut.fi>
+ * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
+ * All rights reserved
+ * Functions for reading the configuration file.
+ *
+ * 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 READCONF_H
+#define READCONF_H
+
+/* Data structure for representing a forwarding request. */
+
+typedef struct {
+ char *listen_host; /* Host (address) to listen on. */
+ int listen_port; /* Port to forward. */
+ char *connect_host; /* Host to connect. */
+ int connect_port; /* Port to connect on connect_host. */
+ int allocated_port; /* Dynamically allocated listen port */
+} Forward;
+/* Data structure for representing option data. */
+
+#define MAX_SEND_ENV 256
+#define SSH_MAX_HOSTS_FILES 256
+
+typedef struct {
+ int forward_agent; /* Forward authentication agent. */
+ int forward_x11; /* Forward X11 display. */
+ int forward_x11_timeout; /* Expiration for Cookies */
+ int forward_x11_trusted; /* Trust Forward X11 display. */
+ int exit_on_forward_failure; /* Exit if bind(2) fails for -L/-R */
+ char *xauth_location; /* Location for xauth program */
+ int gateway_ports; /* Allow remote connects to forwarded ports. */
+ int use_privileged_port; /* Don't use privileged port if false. */
+ int rhosts_rsa_authentication; /* Try rhosts with RSA
+ * authentication. */
+ int rsa_authentication; /* Try RSA authentication. */
+ int pubkey_authentication; /* Try ssh2 pubkey authentication. */
+ int hostbased_authentication; /* ssh2's rhosts_rsa */
+ int challenge_response_authentication;
+ /* Try S/Key or TIS, authentication. */
+ int gss_authentication; /* Try GSS authentication */
+ int gss_deleg_creds; /* Delegate GSS credentials */
+ int password_authentication; /* Try password
+ * authentication. */
+ int kbd_interactive_authentication; /* Try keyboard-interactive auth. */
+ char *kbd_interactive_devices; /* Keyboard-interactive auth devices. */
+ int zero_knowledge_password_authentication; /* Try jpake */
+ int batch_mode; /* Batch mode: do not ask for passwords. */
+ int check_host_ip; /* Also keep track of keys for IP address */
+ int strict_host_key_checking; /* Strict host key checking. */
+ int compression; /* Compress packets in both directions. */
+ int compression_level; /* Compression level 1 (fast) to 9
+ * (best). */
+ int tcp_keep_alive; /* Set SO_KEEPALIVE. */
+ int ip_qos_interactive; /* IP ToS/DSCP/class for interactive */
+ int ip_qos_bulk; /* IP ToS/DSCP/class for bulk traffic */
+ LogLevel log_level; /* Level for logging. */
+
+ int port; /* Port to connect. */
+ int address_family;
+ int connection_attempts; /* Max attempts (seconds) before
+ * giving up */
+ int connection_timeout; /* Max time (seconds) before
+ * aborting connection attempt */
+ int number_of_password_prompts; /* Max number of password
+ * prompts. */
+ int cipher; /* Cipher to use. */
+ char *ciphers; /* SSH2 ciphers in order of preference. */
+ char *macs; /* SSH2 macs in order of preference. */
+ char *hostkeyalgorithms; /* SSH2 server key types in order of preference. */
+ char *kex_algorithms; /* SSH2 kex methods in order of preference. */
+ int protocol; /* Protocol in order of preference. */
+ char *hostname; /* Real host to connect. */
+ char *host_key_alias; /* hostname alias for .ssh/known_hosts */
+ char *proxy_command; /* Proxy command for connecting the host. */
+ char *user; /* User to log in as. */
+ int escape_char; /* Escape character; -2 = none */
+
+ u_int num_system_hostfiles; /* Paths for /etc/ssh/ssh_known_hosts */
+ char *system_hostfiles[SSH_MAX_HOSTS_FILES];
+ u_int num_user_hostfiles; /* Path for $HOME/.ssh/known_hosts */
+ char *user_hostfiles[SSH_MAX_HOSTS_FILES];
+ char *preferred_authentications;
+ char *bind_address; /* local socket address for connection to sshd */
+ char *pkcs11_provider; /* PKCS#11 provider */
+ int verify_host_key_dns; /* Verify host key using DNS */
+
+ int num_identity_files; /* Number of files for RSA/DSA identities. */
+ char *identity_files[SSH_MAX_IDENTITY_FILES];
+ Key *identity_keys[SSH_MAX_IDENTITY_FILES];
+
+ /* Local TCP/IP forward requests. */
+ int num_local_forwards;
+ Forward *local_forwards;
+
+ /* Remote TCP/IP forward requests. */
+ int num_remote_forwards;
+ Forward *remote_forwards;
+ int clear_forwardings;
+
+ int enable_ssh_keysign;
+ int64_t rekey_limit;
+ int no_host_authentication_for_localhost;
+ int identities_only;
+ int server_alive_interval;
+ int server_alive_count_max;
+
+ int num_send_env;
+ char *send_env[MAX_SEND_ENV];
+
+ char *control_path;
+ int control_master;
+ int control_persist; /* ControlPersist flag */
+ int control_persist_timeout; /* ControlPersist timeout (seconds) */
+
+ int hash_known_hosts;
+
+ int tun_open; /* tun(4) */
+ int tun_local; /* force tun device (optional) */
+ int tun_remote; /* force tun device (optional) */
+
+ char *local_command;
+ int permit_local_command;
+ int visual_host_key;
+
+ int use_roaming;
+
+ int request_tty;
+} Options;
+
+#define SSHCTL_MASTER_NO 0
+#define SSHCTL_MASTER_YES 1
+#define SSHCTL_MASTER_AUTO 2
+#define SSHCTL_MASTER_ASK 3
+#define SSHCTL_MASTER_AUTO_ASK 4
+
+#define REQUEST_TTY_AUTO 0
+#define REQUEST_TTY_NO 1
+#define REQUEST_TTY_YES 2
+#define REQUEST_TTY_FORCE 3
+
+void initialize_options(Options *);
+void fill_default_options(Options *);
+int read_config_file(const char *, const char *, Options *, int);
+int parse_forward(Forward *, const char *, int, int);
+
+int
+process_config_line(Options *, const char *, char *, const char *, int, int *);
+
+void add_local_forward(Options *, const Forward *);
+void add_remote_forward(Options *, const Forward *);
+
+#endif /* READCONF_H */