1 files changed, 560 insertions, 0 deletions

diff --git a/other/openssh-2.1.1p4/ssh.h b/other/openssh-2.1.1p4/ssh.h
new file mode 100644
index 0000000..f3f049f
--- /dev/null
+++ b/other/openssh-2.1.1p4/ssh.h
@@ -0,0 +1,560 @@
+/*
+ *
+ * ssh.h
+ *
+ * Author: Tatu Ylonen <ylo@cs.hut.fi>
+ *
+ * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
+ *                    All rights reserved
+ *
+ * Created: Fri Mar 17 17:09:37 1995 ylo
+ *
+ * Generic header file for ssh.
+ *
+ */
+
+/* RCSID("$OpenBSD: ssh.h,v 1.48 2000/07/13 22:53:21 provos Exp $"); */
+
+#ifndef SSH_H
+#define SSH_H
+
+#include <netinet/in.h> /* For struct sockaddr_in */
+#include <pwd.h> /* For struct pw */
+#include <stdarg.h> /* For va_list */
+#include <sys/socket.h> /* For struct sockaddr_storage */
+#include "fake-socket.h" /* For struct sockaddr_storage */
+#ifdef HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#endif
+#include "rsa.h"
+#include "cipher.h"
+
+/*
+ * XXX
+ * The default cipher used if IDEA is not supported by the remote host. It is
+ * recommended that this be one of the mandatory ciphers (DES, 3DES), though
+ * that is not required.
+ */
+#define SSH_FALLBACK_CIPHER     SSH_CIPHER_3DES
+
+/* Cipher used for encrypting authentication files. */
+#define SSH_AUTHFILE_CIPHER     SSH_CIPHER_3DES
+
+/* Default port number. */
+#define SSH_DEFAULT_PORT        22
+
+/* Maximum number of TCP/IP ports forwarded per direction. */
+#define SSH_MAX_FORWARDS_PER_DIRECTION  100
+
+/*
+ * Maximum number of RSA authentication identity files that can be specified
+ * in configuration files or on the command line.
+ */
+#define SSH_MAX_IDENTITY_FILES          100
+
+/*
+ * Major protocol version.  Different version indicates major incompatiblity
+ * that prevents communication.
+ *
+ * Minor protocol version.  Different version indicates minor incompatibility
+ * that does not prevent interoperation.
+ */
+#define PROTOCOL_MAJOR_1        1
+#define PROTOCOL_MINOR_1        5
+
+/* We support both SSH1 and SSH2 */
+#define PROTOCOL_MAJOR_2        2
+#define PROTOCOL_MINOR_2        0
+
+/*
+ * Name for the service.  The port named by this service overrides the
+ * default port if present.
+ */
+#define SSH_SERVICE_NAME        "ssh"
+
+#if defined(USE_PAM) && !defined(SSHD_PAM_SERVICE)
+# define SSHD_PAM_SERVICE       "sshd"
+#endif
+
+#ifndef ETCDIR
+#define ETCDIR                  "/etc"
+#endif /* ETCDIR */
+
+#ifndef PIDDIR
+#define PIDDIR                  "/var/run"
+#endif /* PIDDIR */
+
+/*
+ * System-wide file containing host keys of known hosts.  This file should be
+ * world-readable.
+ */
+#define SSH_SYSTEM_HOSTFILE     ETCDIR "/ssh_known_hosts"
+#define SSH_SYSTEM_HOSTFILE2    ETCDIR "/ssh_known_hosts2"
+
+/*
+ * Of these, ssh_host_key must be readable only by root, whereas ssh_config
+ * should be world-readable.
+ */
+#define HOST_KEY_FILE           ETCDIR "/ssh_host_key"
+#define SERVER_CONFIG_FILE      ETCDIR "/sshd_config"
+#define HOST_CONFIG_FILE        ETCDIR "/ssh_config"
+#define HOST_DSA_KEY_FILE       ETCDIR "/ssh_host_dsa_key"
+
+#ifndef SSH_PROGRAM
+#define SSH_PROGRAM                     "/usr/bin/ssh"
+#endif /* SSH_PROGRAM */
+
+#ifndef LOGIN_PROGRAM
+#define LOGIN_PROGRAM           "/usr/bin/login"
+#endif /* LOGIN_PROGRAM */
+
+#ifndef ASKPASS_PROGRAM
+#define ASKPASS_PROGRAM         "/usr/lib/ssh/ssh-askpass"
+#endif /* ASKPASS_PROGRAM */
+
+/*
+ * The process id of the daemon listening for connections is saved here to
+ * make it easier to kill the correct daemon when necessary.
+ */
+#define SSH_DAEMON_PID_FILE     PIDDIR "/sshd.pid"
+
+/*
+ * The directory in user\'s home directory in which the files reside. The
+ * directory should be world-readable (though not all files are).
+ */
+#define SSH_USER_DIR            ".ssh"
+
+/*
+ * Relevant only when using builtin PRNG.
+ */
+#ifndef SSH_PRNG_SEED_FILE
+# define SSH_PRNG_SEED_FILE      SSH_USER_DIR"/prng_seed"
+#endif /* SSH_PRNG_SEED_FILE */
+#ifndef SSH_PRNG_COMMAND_FILE
+# define SSH_PRNG_COMMAND_FILE   ETCDIR "/ssh_prng_cmds"
+#endif /* SSH_PRNG_COMMAND_FILE */
+
+/*
+ * Per-user file containing host keys of known hosts.  This file need not be
+ * readable by anyone except the user him/herself, though this does not
+ * contain anything particularly secret.
+ */
+#define SSH_USER_HOSTFILE       "~/.ssh/known_hosts"
+#define SSH_USER_HOSTFILE2      "~/.ssh/known_hosts2"
+
+/*
+ * Name of the default file containing client-side authentication key. This
+ * file should only be readable by the user him/herself.
+ */
+#define SSH_CLIENT_IDENTITY     ".ssh/identity"
+#define SSH_CLIENT_ID_DSA       ".ssh/id_dsa"
+
+/*
+ * Configuration file in user\'s home directory.  This file need not be
+ * readable by anyone but the user him/herself, but does not contain anything
+ * particularly secret.  If the user\'s home directory resides on an NFS
+ * volume where root is mapped to nobody, this may need to be world-readable.
+ */
+#define SSH_USER_CONFFILE       ".ssh/config"
+
+/*
+ * File containing a list of those rsa keys that permit logging in as this
+ * user.  This file need not be readable by anyone but the user him/herself,
+ * but does not contain anything particularly secret.  If the user\'s home
+ * directory resides on an NFS volume where root is mapped to nobody, this
+ * may need to be world-readable.  (This file is read by the daemon which is
+ * running as root.)
+ */
+#define SSH_USER_PERMITTED_KEYS ".ssh/authorized_keys"
+#define SSH_USER_PERMITTED_KEYS2        ".ssh/authorized_keys2"
+
+/*
+ * Per-user and system-wide ssh "rc" files.  These files are executed with
+ * /bin/sh before starting the shell or command if they exist.  They will be
+ * passed "proto cookie" as arguments if X11 forwarding with spoofing is in
+ * use.  xauth will be run if neither of these exists.
+ */
+#define SSH_USER_RC             ".ssh/rc"
+#define SSH_SYSTEM_RC           ETCDIR "/sshrc"
+
+/*
+ * Ssh-only version of /etc/hosts.equiv.  Additionally, the daemon may use
+ * ~/.rhosts and /etc/hosts.equiv if rhosts authentication is enabled.
+ */
+#define SSH_HOSTS_EQUIV         ETCDIR "/shosts.equiv"
+
+/*
+ * Name of the environment variable containing the pathname of the
+ * authentication socket.
+ */
+#define SSH_AUTHSOCKET_ENV_NAME "SSH_AUTH_SOCK"
+
+/*
+ * Name of the environment variable containing the pathname of the
+ * authentication socket.
+ */
+#define SSH_AGENTPID_ENV_NAME   "SSH_AGENT_PID"
+
+/*
+ * Default path to ssh-askpass used by ssh-add,
+ * environment variable for overwriting the default location
+ */
+#ifndef SSH_ASKPASS_DEFAULT
+# define SSH_ASKPASS_DEFAULT    "/usr/X11R6/bin/ssh-askpass"
+#endif
+#define SSH_ASKPASS_ENV         "SSH_ASKPASS"
+
+/*
+ * Force host key length and server key length to differ by at least this
+ * many bits.  This is to make double encryption with rsaref work.
+ */
+#define SSH_KEY_BITS_RESERVED           128
+
+/*
+ * Length of the session key in bytes.  (Specified as 256 bits in the
+ * protocol.)
+ */
+#define SSH_SESSION_KEY_LENGTH          32
+
+/* Name of Kerberos service for SSH to use. */
+#define KRB4_SERVICE_NAME               "rcmd"
+
+/*
+ * Authentication methods.  New types can be added, but old types should not
+ * be removed for compatibility.  The maximum allowed value is 31.
+ */
+#define SSH_AUTH_RHOSTS         1
+#define SSH_AUTH_RSA            2
+#define SSH_AUTH_PASSWORD       3
+#define SSH_AUTH_RHOSTS_RSA     4
+#define SSH_AUTH_TIS            5
+#define SSH_AUTH_KERBEROS       6
+#define SSH_PASS_KERBEROS_TGT   7
+                                /* 8 to 15 are reserved */
+#define SSH_PASS_AFS_TOKEN      21
+
+/* Protocol flags.  These are bit masks. */
+#define SSH_PROTOFLAG_SCREEN_NUMBER     1       /* X11 forwarding includes screen */
+#define SSH_PROTOFLAG_HOST_IN_FWD_OPEN  2       /* forwarding opens contain host */
+
+/*
+ * Definition of message types.  New values can be added, but old values
+ * should not be removed or without careful consideration of the consequences
+ * for compatibility.  The maximum value is 254; value 255 is reserved for
+ * future extension.
+ */
+/* Message name */                      /* msg code */  /* arguments */
+#define SSH_MSG_NONE                            0       /* no message */
+#define SSH_MSG_DISCONNECT                      1       /* cause (string) */
+#define SSH_SMSG_PUBLIC_KEY                     2       /* ck,msk,srvk,hostk */
+#define SSH_CMSG_SESSION_KEY                    3       /* key (BIGNUM) */
+#define SSH_CMSG_USER                           4       /* user (string) */
+#define SSH_CMSG_AUTH_RHOSTS                    5       /* user (string) */
+#define SSH_CMSG_AUTH_RSA                       6       /* modulus (BIGNUM) */
+#define SSH_SMSG_AUTH_RSA_CHALLENGE             7       /* int (BIGNUM) */
+#define SSH_CMSG_AUTH_RSA_RESPONSE              8       /* int (BIGNUM) */
+#define SSH_CMSG_AUTH_PASSWORD                  9       /* pass (string) */
+#define SSH_CMSG_REQUEST_PTY                    10      /* TERM, tty modes */
+#define SSH_CMSG_WINDOW_SIZE                    11      /* row,col,xpix,ypix */
+#define SSH_CMSG_EXEC_SHELL                     12      /* */
+#define SSH_CMSG_EXEC_CMD                       13      /* cmd (string) */
+#define SSH_SMSG_SUCCESS                        14      /* */
+#define SSH_SMSG_FAILURE                        15      /* */
+#define SSH_CMSG_STDIN_DATA                     16      /* data (string) */
+#define SSH_SMSG_STDOUT_DATA                    17      /* data (string) */
+#define SSH_SMSG_STDERR_DATA                    18      /* data (string) */
+#define SSH_CMSG_EOF                            19      /* */
+#define SSH_SMSG_EXITSTATUS                     20      /* status (int) */
+#define SSH_MSG_CHANNEL_OPEN_CONFIRMATION       21      /* channel (int) */
+#define SSH_MSG_CHANNEL_OPEN_FAILURE            22      /* channel (int) */
+#define SSH_MSG_CHANNEL_DATA                    23      /* ch,data (int,str) */
+#define SSH_MSG_CHANNEL_CLOSE                   24      /* channel (int) */
+#define SSH_MSG_CHANNEL_CLOSE_CONFIRMATION      25      /* channel (int) */
+/*      SSH_CMSG_X11_REQUEST_FORWARDING         26         OBSOLETE */
+#define SSH_SMSG_X11_OPEN                       27      /* channel (int) */
+#define SSH_CMSG_PORT_FORWARD_REQUEST           28      /* p,host,hp (i,s,i) */
+#define SSH_MSG_PORT_OPEN                       29      /* ch,h,p (i,s,i) */
+#define SSH_CMSG_AGENT_REQUEST_FORWARDING       30      /* */
+#define SSH_SMSG_AGENT_OPEN                     31      /* port (int) */
+#define SSH_MSG_IGNORE                          32      /* string */
+#define SSH_CMSG_EXIT_CONFIRMATION              33      /* */
+#define SSH_CMSG_X11_REQUEST_FORWARDING         34      /* proto,data (s,s) */
+#define SSH_CMSG_AUTH_RHOSTS_RSA                35      /* user,mod (s,mpi) */
+#define SSH_MSG_DEBUG                           36      /* string */
+#define SSH_CMSG_REQUEST_COMPRESSION            37      /* level 1-9 (int) */
+#define SSH_CMSG_MAX_PACKET_SIZE                38      /* size 4k-1024k (int) */
+#define SSH_CMSG_AUTH_TIS                       39      /* we use this for s/key */
+#define SSH_SMSG_AUTH_TIS_CHALLENGE             40      /* challenge (string) */
+#define SSH_CMSG_AUTH_TIS_RESPONSE              41      /* response (string) */
+#define SSH_CMSG_AUTH_KERBEROS                  42      /* (KTEXT) */
+#define SSH_SMSG_AUTH_KERBEROS_RESPONSE         43      /* (KTEXT) */
+#define SSH_CMSG_HAVE_KERBEROS_TGT              44      /* credentials (s) */
+#define SSH_CMSG_HAVE_AFS_TOKEN                 65      /* token (s) */
+
+/*------------ definitions for login.c -------------*/
+
+/*
+ * Returns the time when the user last logged in.  Returns 0 if the
+ * information is not available.  This must be called before record_login.
+ * The host from which the user logged in is stored in buf.
+ */
+unsigned long
+get_last_login_time(uid_t uid, const char *logname,
+    char *buf, unsigned int bufsize);
+
+/*
+ * Records that the user has logged in.  This does many things normally done
+ * by login(1).
+ */
+void
+record_login(pid_t pid, const char *ttyname, const char *user, uid_t uid,
+    const char *host, struct sockaddr *addr);
+
+/*
+ * Records that the user has logged out.  This does many thigs normally done
+ * by login(1) or init.
+ */
+void    record_logout(pid_t pid, const char *ttyname);
+
+/*------------ definitions for sshconnect.c ----------*/
+
+/*
+ * Opens a TCP/IP connection to the remote server on the given host.  If port
+ * is 0, the default port will be used.  If anonymous is zero, a privileged
+ * port will be allocated to make the connection. This requires super-user
+ * privileges if anonymous is false. Connection_attempts specifies the
+ * maximum number of tries, one per second.  This returns true on success,
+ * and zero on failure.  If the connection is successful, this calls
+ * packet_set_connection for the connection.
+ */
+int
+ssh_connect(const char *host, struct sockaddr_storage * hostaddr,
+    u_short port, int connection_attempts,
+    int anonymous, uid_t original_real_uid,
+    const char *proxy_command);
+
+/*
+ * Starts a dialog with the server, and authenticates the current user on the
+ * server.  This does not need any extra privileges.  The basic connection to
+ * the server must already have been established before this is called. If
+ * login fails, this function prints an error and never returns. This
+ * initializes the random state, and leaves it initialized (it will also have
+ * references from the packet module).
+ */
+
+void
+ssh_login(int host_key_valid, RSA * host_key, const char *host,
+    struct sockaddr * hostaddr, uid_t original_real_uid);
+
+/*------------ Definitions for various authentication methods. -------*/
+
+/*
+ * Tries to authenticate the user using the .rhosts file.  Returns true if
+ * authentication succeeds.  If ignore_rhosts is non-zero, this will not
+ * consider .rhosts and .shosts (/etc/hosts.equiv will still be used).
+ */
+int     auth_rhosts(struct passwd * pw, const char *client_user);
+
+/*
+ * Tries to authenticate the user using the .rhosts file and the host using
+ * its host key.  Returns true if authentication succeeds.
+ */
+int
+auth_rhosts_rsa(struct passwd * pw, const char *client_user, RSA* client_host_key);
+
+/*
+ * Tries to authenticate the user using password.  Returns true if
+ * authentication succeeds.
+ */
+int     auth_password(struct passwd * pw, const char *password);
+
+/*
+ * Performs the RSA authentication dialog with the client.  This returns 0 if
+ * the client could not be authenticated, and 1 if authentication was
+ * successful.  This may exit if there is a serious protocol violation.
+ */
+int     auth_rsa(struct passwd * pw, BIGNUM * client_n);
+
+/*
+ * Parses an RSA key (number of bits, e, n) from a string.  Moves the pointer
+ * over the key.  Skips any whitespace at the beginning and at end.
+ */
+int     auth_rsa_read_key(char **cpp, unsigned int *bitsp, BIGNUM * e, BIGNUM * n);
+
+/*
+ * Returns the name of the machine at the other end of the socket.  The
+ * returned string should be freed by the caller.
+ */
+char   *get_remote_hostname(int socket);
+
+/*
+ * Return the canonical name of the host in the other side of the current
+ * connection (as returned by packet_get_connection).  The host name is
+ * cached, so it is efficient to call this several times.
+ */
+const char *get_canonical_hostname(void);
+
+/*
+ * Returns the remote IP address as an ascii string.  The value need not be
+ * freed by the caller.
+ */
+const char *get_remote_ipaddr(void);
+
+/* Returns the port number of the peer of the socket. */
+int     get_peer_port(int sock);
+
+/* Returns the port number of the remote/local host. */
+int     get_remote_port(void);
+int     get_local_port(void);
+
+
+/*
+ * Performs the RSA authentication challenge-response dialog with the client,
+ * and returns true (non-zero) if the client gave the correct answer to our
+ * challenge; returns zero if the client gives a wrong answer.
+ */
+int     auth_rsa_challenge_dialog(RSA *pk);
+
+/*
+ * Reads a passphrase from /dev/tty with echo turned off.  Returns the
+ * passphrase (allocated with xmalloc).  Exits if EOF is encountered. If
+ * from_stdin is true, the passphrase will be read from stdin instead.
+ */
+char   *read_passphrase(const char *prompt, int from_stdin);
+
+
+/*------------ Definitions for logging. -----------------------*/
+
+/* Supported syslog facilities and levels. */
+typedef enum {
+        SYSLOG_FACILITY_DAEMON,
+        SYSLOG_FACILITY_USER,
+        SYSLOG_FACILITY_AUTH,
+        SYSLOG_FACILITY_LOCAL0,
+        SYSLOG_FACILITY_LOCAL1,
+        SYSLOG_FACILITY_LOCAL2,
+        SYSLOG_FACILITY_LOCAL3,
+        SYSLOG_FACILITY_LOCAL4,
+        SYSLOG_FACILITY_LOCAL5,
+        SYSLOG_FACILITY_LOCAL6,
+        SYSLOG_FACILITY_LOCAL7
+}       SyslogFacility;
+
+typedef enum {
+        SYSLOG_LEVEL_QUIET,
+        SYSLOG_LEVEL_FATAL,
+        SYSLOG_LEVEL_ERROR,
+        SYSLOG_LEVEL_INFO,
+        SYSLOG_LEVEL_VERBOSE,
+        SYSLOG_LEVEL_DEBUG
+}       LogLevel;
+/* Initializes logging. */
+void    log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr);
+
+/* Logging implementation, depending on server or client */
+void    do_log(LogLevel level, const char *fmt, va_list args);
+
+/* name to facility/level */
+SyslogFacility log_facility_number(char *name);
+LogLevel log_level_number(char *name);
+
+/* Output a message to syslog or stderr */
+void    fatal(const char *fmt,...) __attribute__((format(printf, 1, 2)));
+void    error(const char *fmt,...) __attribute__((format(printf, 1, 2)));
+void    log(const char *fmt,...) __attribute__((format(printf, 1, 2)));
+void    verbose(const char *fmt,...) __attribute__((format(printf, 1, 2)));
+void    debug(const char *fmt,...) __attribute__((format(printf, 1, 2)));
+
+/* same as fatal() but w/o logging */
+void    fatal_cleanup(void);
+
+/*
+ * Registers a cleanup function to be called by fatal()/fatal_cleanup()
+ * before exiting. It is permissible to call fatal_remove_cleanup for the
+ * function itself from the function.
+ */
+void    fatal_add_cleanup(void (*proc) (void *context), void *context);
+
+/* Removes a cleanup function to be called at fatal(). */
+void    fatal_remove_cleanup(void (*proc) (void *context), void *context);
+
+/* ---- misc */
+
+/*
+ * Expands tildes in the file name.  Returns data allocated by xmalloc.
+ * Warning: this calls getpw*.
+ */
+char   *tilde_expand_filename(const char *filename, uid_t my_uid);
+
+/* remove newline at end of string */
+char    *chop(char *s);
+
+/* return next token in configuration line */
+char    *strdelim(char **s);
+
+/* set filedescriptor to non-blocking */
+void    set_nonblock(int fd);
+
+/*
+ * Performs the interactive session.  This handles data transmission between
+ * the client and the program.  Note that the notion of stdin, stdout, and
+ * stderr in this function is sort of reversed: this function writes to stdin
+ * (of the child program), and reads from stdout and stderr (of the child
+ * program).
+ */
+void    server_loop(pid_t pid, int fdin, int fdout, int fderr);
+void    server_loop2(void);
+
+/* Client side main loop for the interactive session. */
+int     client_loop(int have_pty, int escape_char);
+
+/* Linked list of custom environment strings (see auth-rsa.c). */
+struct envstring {
+        struct envstring *next;
+        char   *s;
+};
+
+/*
+ * Ensure all of data on socket comes through. f==read || f==write
+ */
+ssize_t atomicio(ssize_t (*f)(), int fd, void *s, size_t n);
+
+#ifdef KRB4
+#include <krb.h>
+/*
+ * Performs Kerberos v4 mutual authentication with the client. This returns 0
+ * if the client could not be authenticated, and 1 if authentication was
+ * successful.  This may exit if there is a serious protocol violation.
+ */
+int     auth_krb4(const char *server_user, KTEXT auth, char **client);
+int     krb4_init(uid_t uid);
+void    krb4_cleanup_proc(void *ignore);
+int     auth_krb4_password(struct passwd * pw, const char *password);
+
+#ifdef AFS
+#include <kafs.h>
+
+/* Accept passed Kerberos v4 ticket-granting ticket and AFS tokens. */
+int     auth_kerberos_tgt(struct passwd * pw, const char *string);
+int     auth_afs_token(struct passwd * pw, const char *token_string);
+
+int     creds_to_radix(CREDENTIALS * creds, unsigned char *buf, size_t buflen);
+int     radix_to_creds(const char *buf, CREDENTIALS * creds);
+#endif                          /* AFS */
+
+#endif                          /* KRB4 */
+
+#ifdef SKEY
+#include <skey.h>
+char   *skey_fake_keyinfo(char *username);
+int     auth_skey_password(struct passwd * pw, const char *password);
+#endif                          /* SKEY */
+
+/* AF_UNSPEC or AF_INET or AF_INET6 */
+extern int IPv4or6;
+
+#ifdef USE_PAM
+#include "auth-pam.h"
+#endif /* USE_PAM */
+
+#endif                          /* SSH_H */