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 21 typedef 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 33 typedef 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 tcp_rcv_buf; /* user switch to set tcp recv buffer */ 64 int tcp_rcv_buf_poll; /* Option to poll recv buf every window transfer */ 65 int hpn_disabled; /* Switch to disable HPN buffer management */ 66 int hpn_buffer_size; /* User definable size for HPN buffer window */ 67 int ip_qos_interactive; /* IP ToS/DSCP/class for interactive */ 68 int ip_qos_bulk; /* IP ToS/DSCP/class for bulk traffic */ 69 LogLevel log_level; /* Level for logging. */ 70 71 int port; /* Port to connect. */ 72 int address_family; 73 int connection_attempts; /* Max attempts (seconds) before 74 * giving up */ 75 int connection_timeout; /* Max time (seconds) before 76 * aborting connection attempt */ 77 int number_of_password_prompts; /* Max number of password 78 * prompts. */ 79 int cipher; /* Cipher to use. */ 80 char *ciphers; /* SSH2 ciphers in order of preference. */ 81 char *macs; /* SSH2 macs in order of preference. */ 82 char *hostkeyalgorithms; /* SSH2 server key types in order of preference. */ 83 char *kex_algorithms; /* SSH2 kex methods in order of preference. */ 84 int protocol; /* Protocol in order of preference. */ 85 char *hostname; /* Real host to connect. */ 86 char *host_key_alias; /* hostname alias for .ssh/known_hosts */ 87 char *proxy_command; /* Proxy command for connecting the host. */ 88 char *user; /* User to log in as. */ 89 int escape_char; /* Escape character; -2 = none */ 90 91 u_int num_system_hostfiles; /* Paths for /etc/ssh/ssh_known_hosts */ 92 char *system_hostfiles[SSH_MAX_HOSTS_FILES]; 93 u_int num_user_hostfiles; /* Path for $HOME/.ssh/known_hosts */ 94 char *user_hostfiles[SSH_MAX_HOSTS_FILES]; 95 char *preferred_authentications; 96 char *bind_address; /* local socket address for connection to sshd */ 97 char *pkcs11_provider; /* PKCS#11 provider */ 98 int verify_host_key_dns; /* Verify host key using DNS */ 99 100 int num_identity_files; /* Number of files for RSA/DSA identities. */ 101 char *identity_files[SSH_MAX_IDENTITY_FILES]; 102 Key *identity_keys[SSH_MAX_IDENTITY_FILES]; 103 104 /* Local TCP/IP forward requests. */ 105 int num_local_forwards; 106 Forward *local_forwards; 107 108 /* Remote TCP/IP forward requests. */ 109 int num_remote_forwards; 110 Forward *remote_forwards; 111 int clear_forwardings; 112 113 int enable_ssh_keysign; 114 int64_t rekey_limit; 115 int none_switch; /* Use none cipher */ 116 int none_enabled; /* Allow none to be used */ 117 int no_host_authentication_for_localhost; 118 int identities_only; 119 int server_alive_interval; 120 int server_alive_count_max; 121 122 int num_send_env; 123 char *send_env[MAX_SEND_ENV]; 124 125 char *control_path; 126 int control_master; 127 int control_persist; /* ControlPersist flag */ 128 int control_persist_timeout; /* ControlPersist timeout (seconds) */ 129 130 int hash_known_hosts; 131 132 int tun_open; /* tun(4) */ 133 int tun_local; /* force tun device (optional) */ 134 int tun_remote; /* force tun device (optional) */ 135 136 char *local_command; 137 int permit_local_command; 138 int visual_host_key; 139 140 int use_roaming; 141 142 int request_tty; 143 } Options; 144 145 #define SSHCTL_MASTER_NO 0 146 #define SSHCTL_MASTER_YES 1 147 #define SSHCTL_MASTER_AUTO 2 148 #define SSHCTL_MASTER_ASK 3 149 #define SSHCTL_MASTER_AUTO_ASK 4 150 151 #define REQUEST_TTY_AUTO 0 152 #define REQUEST_TTY_NO 1 153 #define REQUEST_TTY_YES 2 154 #define REQUEST_TTY_FORCE 3 155 156 void initialize_options(Options *); 157 void fill_default_options(Options *); 158 int read_config_file(const char *, const char *, Options *, int); 159 int parse_forward(Forward *, const char *, int, int); 160 161 int 162 process_config_line(Options *, const char *, char *, const char *, int, int *); 163 164 void add_local_forward(Options *, const Forward *); 165 void add_remote_forward(Options *, const Forward *); 166 167 #endif /* READCONF_H */ 168