1 /* 2 * 3 * readconf.h 4 * 5 * Author: Tatu Ylonen <ylo@cs.hut.fi> 6 * 7 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 8 * All rights reserved 9 * 10 * Created: Sat Apr 22 00:25:29 1995 ylo 11 * 12 * Functions for reading the configuration file. 13 * 14 * $FreeBSD$ 15 */ 16 17 /* RCSID("$Id: readconf.h,v 1.13 1999/12/01 13:59:15 markus Exp $"); */ 18 19 #ifndef READCONF_H 20 #define READCONF_H 21 22 /* Data structure for representing a forwarding request. */ 23 24 typedef struct { 25 u_short port; /* Port to forward. */ 26 char *host; /* Host to connect. */ 27 u_short host_port; /* Port to connect on host. */ 28 } Forward; 29 /* Data structure for representing option data. */ 30 31 typedef struct { 32 int forward_agent; /* Forward authentication agent. */ 33 int forward_x11; /* Forward X11 display. */ 34 int gateway_ports; /* Allow remote connects to forwarded ports. */ 35 int use_privileged_port; /* Don't use privileged port if false. */ 36 int rhosts_authentication; /* Try rhosts authentication. */ 37 int rhosts_rsa_authentication; /* Try rhosts with RSA 38 * authentication. */ 39 int rsa_authentication; /* Try RSA authentication. */ 40 int skey_authentication; /* Try S/Key or TIS authentication. */ 41 #ifdef KRB4 42 int krb4_authentication; /* Try Kerberos v4 43 * authentication. */ 44 #endif 45 46 #ifdef KRB5 47 int krb5_authentication; 48 int krb5_tgt_passing; 49 #endif /* KRB5 */ 50 51 #ifdef AFS 52 int krb4_tgt_passing; /* Try Kerberos v4 tgt passing. */ 53 int afs_token_passing; /* Try AFS token passing. */ 54 #endif 55 int password_authentication; /* Try password 56 * authentication. */ 57 int fallback_to_rsh;/* Use rsh if cannot connect with ssh. */ 58 int use_rsh; /* Always use rsh (don\'t try ssh). */ 59 int batch_mode; /* Batch mode: do not ask for passwords. */ 60 int check_host_ip; /* Also keep track of keys for IP address */ 61 int strict_host_key_checking; /* Strict host key checking. */ 62 int compression; /* Compress packets in both directions. */ 63 int compression_level; /* Compression level 1 (fast) to 9 64 * (best). */ 65 int keepalives; /* Set SO_KEEPALIVE. */ 66 LogLevel log_level; /* Level for logging. */ 67 68 int port; /* Port to connect. */ 69 int connection_attempts; /* Max attempts (seconds) before 70 * giving up */ 71 int number_of_password_prompts; /* Max number of password 72 * prompts. */ 73 int cipher; /* Cipher to use. */ 74 char *hostname; /* Real host to connect. */ 75 char *proxy_command; /* Proxy command for connecting the host. */ 76 char *user; /* User to log in as. */ 77 int escape_char; /* Escape character; -2 = none */ 78 79 char *system_hostfile;/* Path for /etc/ssh_known_hosts. */ 80 char *user_hostfile; /* Path for $HOME/.ssh/known_hosts. */ 81 82 int num_identity_files; /* Number of files for RSA identities. */ 83 char *identity_files[SSH_MAX_IDENTITY_FILES]; 84 85 /* Local TCP/IP forward requests. */ 86 int num_local_forwards; 87 Forward local_forwards[SSH_MAX_FORWARDS_PER_DIRECTION]; 88 89 /* Remote TCP/IP forward requests. */ 90 int num_remote_forwards; 91 Forward remote_forwards[SSH_MAX_FORWARDS_PER_DIRECTION]; 92 } Options; 93 94 95 /* 96 * Initializes options to special values that indicate that they have not yet 97 * been set. Read_config_file will only set options with this value. Options 98 * are processed in the following order: command line, user config file, 99 * system config file. Last, fill_default_options is called. 100 */ 101 void initialize_options(Options * options); 102 103 /* 104 * Called after processing other sources of option data, this fills those 105 * options for which no value has been specified with their default values. 106 */ 107 void fill_default_options(Options * options); 108 109 /* 110 * Processes a single option line as used in the configuration files. This 111 * only sets those values that have not already been set. Returns 0 for legal 112 * options 113 */ 114 int 115 process_config_line(Options * options, const char *host, 116 char *line, const char *filename, int linenum, 117 int *activep); 118 119 /* 120 * Reads the config file and modifies the options accordingly. Options 121 * should already be initialized before this call. This never returns if 122 * there is an error. If the file does not exist, this returns immediately. 123 */ 124 void 125 read_config_file(const char *filename, const char *host, 126 Options * options); 127 128 /* 129 * Adds a local TCP/IP port forward to options. Never returns if there is an 130 * error. 131 */ 132 void 133 add_local_forward(Options * options, u_short port, const char *host, 134 u_short host_port); 135 136 /* 137 * Adds a remote TCP/IP port forward to options. Never returns if there is 138 * an error. 139 */ 140 void 141 add_remote_forward(Options * options, u_short port, const char *host, 142 u_short host_port); 143 144 #endif /* READCONF_H */ 145