1/* $OpenBSD: readconf.h,v 1.90 2011/05/24 07:15:47 djm Exp $ */ 2 3/* 4 * Author: Tatu Ylonen <ylo@cs.hut.fi> 5 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 6 * All rights reserved 7 * Functions for reading the configuration file. 8 * 9 * As far as I am concerned, the code I have written for this software 10 * can be used freely for any purpose. Any derived versions of this 11 * software must be clearly marked as such, and if the derived work is 12 * incompatible with the protocol description in the RFC file, it must be 13 * called by a name other than "ssh" or "Secure Shell". 14 */ 15 16#ifndef READCONF_H 17#define READCONF_H 18 19/* Data structure for representing a forwarding request. */ 20 21typedef struct { 22 char *listen_host; /* Host (address) to listen on. */ 23 int listen_port; /* Port to forward. */ 24 char *connect_host; /* Host to connect. */ 25 int connect_port; /* Port to connect on connect_host. */ 26 int allocated_port; /* Dynamically allocated listen port */ 27} Forward; 28/* Data structure for representing option data. */ 29 30#define MAX_SEND_ENV 256 31#define SSH_MAX_HOSTS_FILES 256 32 33typedef struct { 34 int forward_agent; /* Forward authentication agent. */ 35 int forward_x11; /* Forward X11 display. */ 36 int forward_x11_timeout; /* Expiration for Cookies */ 37 int forward_x11_trusted; /* Trust Forward X11 display. */ 38 int exit_on_forward_failure; /* Exit if bind(2) fails for -L/-R */ 39 char *xauth_location; /* Location for xauth program */ 40 int gateway_ports; /* Allow remote connects to forwarded ports. */ 41 int use_privileged_port; /* Don't use privileged port if false. */ 42 int rhosts_rsa_authentication; /* Try rhosts with RSA 43 * authentication. */ 44 int rsa_authentication; /* Try RSA authentication. */ 45 int pubkey_authentication; /* Try ssh2 pubkey authentication. */ 46 int hostbased_authentication; /* ssh2's rhosts_rsa */ 47 int challenge_response_authentication; 48 /* Try S/Key or TIS, authentication. */ 49 int gss_authentication; /* Try GSS authentication */ 50 int gss_deleg_creds; /* Delegate GSS credentials */ 51 int password_authentication; /* Try password 52 * authentication. */ 53 int kbd_interactive_authentication; /* Try keyboard-interactive auth. */ 54 char *kbd_interactive_devices; /* Keyboard-interactive auth devices. */ 55 int zero_knowledge_password_authentication; /* Try jpake */ 56 int batch_mode; /* Batch mode: do not ask for passwords. */ 57 int check_host_ip; /* Also keep track of keys for IP address */ 58 int strict_host_key_checking; /* Strict host key checking. */ 59 int compression; /* Compress packets in both directions. */ 60 int compression_level; /* Compression level 1 (fast) to 9 61 * (best). */ 62 int tcp_keep_alive; /* Set SO_KEEPALIVE. */ 63 int ip_qos_interactive; /* IP ToS/DSCP/class for interactive */ 64 int ip_qos_bulk; /* IP ToS/DSCP/class for bulk traffic */ 65 LogLevel log_level; /* Level for logging. */ 66 67 int port; /* Port to connect. */ 68 int address_family; 69 int connection_attempts; /* Max attempts (seconds) before 70 * giving up */ 71 int connection_timeout; /* Max time (seconds) before 72 * aborting connection attempt */ 73 int number_of_password_prompts; /* Max number of password 74 * prompts. */ 75 int cipher; /* Cipher to use. */ 76 char *ciphers; /* SSH2 ciphers in order of preference. */ 77 char *macs; /* SSH2 macs in order of preference. */ 78 char *hostkeyalgorithms; /* SSH2 server key types in order of preference. */ 79 char *kex_algorithms; /* SSH2 kex methods in order of preference. */ 80 int protocol; /* Protocol in order of preference. */ 81 char *hostname; /* Real host to connect. */ 82 char *host_key_alias; /* hostname alias for .ssh/known_hosts */ 83 char *proxy_command; /* Proxy command for connecting the host. */ 84 char *user; /* User to log in as. */ 85 int escape_char; /* Escape character; -2 = none */ 86 87 u_int num_system_hostfiles; /* Paths for /etc/ssh/ssh_known_hosts */ 88 char *system_hostfiles[SSH_MAX_HOSTS_FILES]; 89 u_int num_user_hostfiles; /* Path for $HOME/.ssh/known_hosts */ 90 char *user_hostfiles[SSH_MAX_HOSTS_FILES]; 91 char *preferred_authentications; 92 char *bind_address; /* local socket address for connection to sshd */ 93 char *pkcs11_provider; /* PKCS#11 provider */ 94 int verify_host_key_dns; /* Verify host key using DNS */ 95 96 int num_identity_files; /* Number of files for RSA/DSA identities. */ 97 char *identity_files[SSH_MAX_IDENTITY_FILES]; 98 Key *identity_keys[SSH_MAX_IDENTITY_FILES]; 99 100 /* Local TCP/IP forward requests. */ 101 int num_local_forwards; 102 Forward *local_forwards; 103 104 /* Remote TCP/IP forward requests. */ 105 int num_remote_forwards; 106 Forward *remote_forwards; 107 int clear_forwardings; 108 109 int enable_ssh_keysign; 110 int64_t rekey_limit; 111 int no_host_authentication_for_localhost; 112 int identities_only; 113 int server_alive_interval; 114 int server_alive_count_max; 115 116 int num_send_env; 117 char *send_env[MAX_SEND_ENV]; 118 119 char *control_path; 120 int control_master; 121 int control_persist; /* ControlPersist flag */ 122 int control_persist_timeout; /* ControlPersist timeout (seconds) */ 123 124 int hash_known_hosts; 125 126 int tun_open; /* tun(4) */ 127 int tun_local; /* force tun device (optional) */ 128 int tun_remote; /* force tun device (optional) */ 129 130 char *local_command; 131 int permit_local_command; 132 int visual_host_key; 133 134 int use_roaming; 135 136 int request_tty; 137} Options; 138 139#define SSHCTL_MASTER_NO 0 140#define SSHCTL_MASTER_YES 1 141#define SSHCTL_MASTER_AUTO 2 142#define SSHCTL_MASTER_ASK 3 143#define SSHCTL_MASTER_AUTO_ASK 4 144 145#define REQUEST_TTY_AUTO 0 146#define REQUEST_TTY_NO 1 147#define REQUEST_TTY_YES 2 148#define REQUEST_TTY_FORCE 3 149 150void initialize_options(Options *); 151void fill_default_options(Options *); 152int read_config_file(const char *, const char *, Options *, int); 153int parse_forward(Forward *, const char *, int, int); 154 155int 156process_config_line(Options *, const char *, char *, const char *, int, int *); 157 158void add_local_forward(Options *, const Forward *); 159void add_remote_forward(Options *, const Forward *); 160 161#endif /* READCONF_H */ 162