=================================================================== RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/ssh/ssh.h,v retrieving revision 1.25 retrieving revision 1.26 diff -u -r1.25 -r1.26 --- src/usr.bin/ssh/ssh.h 1999/11/24 00:26:03 1.25 +++ src/usr.bin/ssh/ssh.h 1999/11/24 19:53:52 1.26 @@ -13,7 +13,7 @@ * */ -/* RCSID("$Id: ssh.h,v 1.25 1999/11/24 00:26:03 deraadt Exp $"); */ +/* RCSID("$Id: ssh.h,v 1.26 1999/11/24 19:53:52 markus Exp $"); */ #ifndef SSH_H #define SSH_H @@ -21,9 +21,11 @@ #include "rsa.h" #include "cipher.h" -/* 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. */ +/* + * 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. */ @@ -35,108 +37,138 @@ /* 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. */ +/* + * 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. */ +/* + * Major protocol version. Different version indicates major incompatiblity + * that prevents communication. + */ #define PROTOCOL_MAJOR 1 -/* Minor protocol version. Different version indicates minor incompatibility - that does not prevent interoperation. */ +/* + * Minor protocol version. Different version indicates minor incompatibility + * that does not prevent interoperation. + */ #define PROTOCOL_MINOR 5 -/* Name for the service. The port named by this service overrides the default - port if present. */ +/* + * Name for the service. The port named by this service overrides the + * default port if present. + */ #define SSH_SERVICE_NAME "ssh" #define ETCDIR "/etc" #define PIDDIR "/var/run" -/* System-wide file containing host keys of known hosts. This file should be - world-readable. */ +/* + * System-wide file containing host keys of known hosts. This file should be + * world-readable. + */ #define SSH_SYSTEM_HOSTFILE ETCDIR "/ssh_known_hosts" -/* HOST_KEY_FILE /etc/ssh_host_key, - SERVER_CONFIG_FILE /etc/sshd_config, -and HOST_CONFIG_FILE /etc/ssh_config -are all defined in Makefile.in. Of these, ssh_host_key should be readable -only by root, whereas ssh_config should be world-readable. */ +/* + * 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_KEY_FILE "/etc/ssh_host_key" -#define SERVER_CONFIG_FILE "/etc/sshd_config" -#define HOST_CONFIG_FILE "/etc/ssh_config" - #define SSH_PROGRAM "/usr/bin/ssh" -/* The process id of the daemon listening for connections is saved - here to make it easier to kill the correct daemon when necessary. */ +/* + * 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). */ +/* + * 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" -/* 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. */ +/* + * 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" -/* Name of the default file containing client-side authentication key. - This file should only be readable by the user him/herself. */ +/* + * 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" -/* 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. */ +/* + * 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.) */ +/* + * 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" -/* 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. */ +/* + * 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. */ +/* + * 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" -/* Additionally, the daemon may use ~/.rhosts and /etc/hosts.equiv if - rhosts authentication is enabled. */ - -/* Name of the environment variable containing the pathname of the - authentication socket. */ +/* + * 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. */ +/* + * Name of the environment variable containing the pathname of the + * authentication socket. + */ #define SSH_AGENTPID_ENV_NAME "SSH_AGENT_PID" -/* 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. */ +/* + * 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.) */ +/* + * 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. */ +/* + * 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 @@ -144,20 +176,20 @@ #define SSH_AUTH_TIS 5 #define SSH_AUTH_KERBEROS 6 #define SSH_PASS_KERBEROS_TGT 7 - /* 8 to 15 are reserved */ + /* 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 */ +#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 */ +/* + * 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 */ @@ -207,45 +239,54 @@ /*------------ 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. */ +/* + * 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). */ +/* + * Records that the user has logged in. This does many things normally done + * by login(1). + */ void record_login(int pid, const char *ttyname, const char *user, uid_t uid, const char *host, struct sockaddr_in * addr); -/* Records that the user has logged out. This does many thigs normally - done by login(1) or init. */ +/* + * Records that the user has logged out. This does many thigs normally done + * by login(1) or init. + */ void record_logout(int 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. */ +/* + * 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_in * hostaddr, int 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). */ +/* + * 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, @@ -253,41 +294,57 @@ /*------------ 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). */ +/* + * 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. */ +/* + * 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, BIGNUM * client_host_key_e, BIGNUM * client_host_key_n); -/* Tries to authenticate the user using password. Returns true if - authentication succeeds. */ +/* + * 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. */ +/* + * 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. */ +/* + * 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. */ +/* + * 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. */ +/* + * 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. */ +/* + * 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. */ @@ -296,16 +353,20 @@ /* Returns the port number of the remote host. */ int get_remote_port(void); -/* Tries to match the host name (which must be in all lowercase) against the - comma-separated sequence of subpatterns (each possibly preceded by ! to - indicate negation). Returns true if there is a positive match; zero - otherwise. */ +/* + * Tries to match the host name (which must be in all lowercase) against the + * comma-separated sequence of subpatterns (each possibly preceded by ! to + * indicate negation). Returns true if there is a positive match; zero + * otherwise. + */ int match_hostname(const char *host, const char *pattern, unsigned int len); -/* Checks whether the given host is already in the list of our known hosts. - Returns HOST_OK if the host is known and has the specified key, - HOST_NEW if the host is not known, and HOST_CHANGED if the host is known - but used to have a different host key. The host must be in all lowercase. */ +/* + * Checks whether the given host is already in the list of our known hosts. + * Returns HOST_OK if the host is known and has the specified key, HOST_NEW + * if the host is not known, and HOST_CHANGED if the host is known but used + * to have a different host key. The host must be in all lowercase. + */ typedef enum { HOST_OK, HOST_NEW, HOST_CHANGED } HostStatus; @@ -313,43 +374,55 @@ check_host_in_hostfile(const char *filename, const char *host, BIGNUM * e, BIGNUM * n, BIGNUM * ke, BIGNUM * kn); -/* Appends an entry to the host file. Returns false if the entry - could not be appended. */ +/* + * Appends an entry to the host file. Returns false if the entry could not + * be appended. + */ int add_host_to_hostfile(const char *filename, const char *host, BIGNUM * e, BIGNUM * n); -/* 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. */ +/* + * 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(BIGNUM * e, BIGNUM * n); -/* 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. */ +/* + * 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); -/* Saves the authentication (private) key in a file, encrypting it with - passphrase. The identification of the file (lowest 64 bits of n) - will precede the key to provide identification of the key without - needing a passphrase. */ +/* + * Saves the authentication (private) key in a file, encrypting it with + * passphrase. The identification of the file (lowest 64 bits of n) will + * precede the key to provide identification of the key without needing a + * passphrase. + */ int save_private_key(const char *filename, const char *passphrase, RSA * private_key, const char *comment); -/* Loads the public part of the key file (public key and comment). - Returns 0 if an error occurred; zero if the public key was successfully - read. The comment of the key is returned in comment_return if it is - non-NULL; the caller must free the value with xfree. */ +/* + * Loads the public part of the key file (public key and comment). Returns 0 + * if an error occurred; zero if the public key was successfully read. The + * comment of the key is returned in comment_return if it is non-NULL; the + * caller must free the value with xfree. + */ int load_public_key(const char *filename, RSA * pub, char **comment_return); -/* Loads the private key from the file. Returns 0 if an error is encountered - (file does not exist or is not readable, or passphrase is bad). - This initializes the private key. The comment of the key is returned - in comment_return if it is non-NULL; the caller must free the value - with xfree. */ +/* + * Loads the private key from the file. Returns 0 if an error is encountered + * (file does not exist or is not readable, or passphrase is bad). This + * initializes the private key. The comment of the key is returned in + * comment_return if it is non-NULL; the caller must free the value with + * xfree. + */ int load_private_key(const char *filename, const char *passphrase, RSA * private_key, char **comment_return); @@ -399,9 +472,11 @@ /* 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. */ +/* + * 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(). */ @@ -412,9 +487,11 @@ /* Sets specific protocol options. */ void channel_set_options(int hostname_in_open); -/* Allocate a new channel object and set its type and socket. Remote_name - must have been allocated with xmalloc; this will free it when the channel - is freed. */ +/* + * Allocate a new channel object and set its type and socket. Remote_name + * must have been allocated with xmalloc; this will free it when the channel + * is freed. + */ int channel_allocate(int type, int sock, char *remote_name); /* Free the channel and close its socket. */ @@ -423,16 +500,20 @@ /* Add any bits relevant to channels in select bitmasks. */ void channel_prepare_select(fd_set * readset, fd_set * writeset); -/* After select, perform any appropriate operations for channels which - have events pending. */ +/* + * After select, perform any appropriate operations for channels which have + * events pending. + */ void channel_after_select(fd_set * readset, fd_set * writeset); /* If there is data to send to the connection, send some of it now. */ void channel_output_poll(void); -/* This is called when a packet of type CHANNEL_DATA has just been received. - The message type has already been consumed, but channel number and data - is still there. */ +/* + * This is called when a packet of type CHANNEL_DATA has just been received. + * The message type has already been consumed, but channel number and data is + * still there. + */ void channel_input_data(int payload_len); /* Returns true if no channel has too much buffered data. */ @@ -454,8 +535,10 @@ any unix domain sockets. */ void channel_stop_listening(void); -/* Closes the sockets of all channels. This is used to close extra file - descriptors after a fork. */ +/* + * Closes the sockets of all channels. This is used to close extra file + * descriptors after a fork. + */ void channel_close_all(void); /* Returns the maximum file descriptor number used by the channels. */ @@ -464,92 +547,123 @@ /* Returns true if there is still an open channel over the connection. */ int channel_still_open(void); -/* Returns a string containing a list of all open channels. The list is - suitable for displaying to the user. It uses crlf instead of newlines. - The caller should free the string with xfree. */ +/* + * Returns a string containing a list of all open channels. The list is + * suitable for displaying to the user. It uses crlf instead of newlines. + * The caller should free the string with xfree. + */ char *channel_open_message(void); -/* Initiate forwarding of connections to local port "port" through the secure - channel to host:port from remote side. This never returns if there - was an error. */ +/* + * Initiate forwarding of connections to local port "port" through the secure + * channel to host:port from remote side. This never returns if there was an + * error. + */ void channel_request_local_forwarding(int port, const char *host, int remote_port); -/* Initiate forwarding of connections to port "port" on remote host through - the secure channel to host:port from local side. This never returns - if there was an error. This registers that open requests for that - port are permitted. */ +/* + * Initiate forwarding of connections to port "port" on remote host through + * the secure channel to host:port from local side. This never returns if + * there was an error. This registers that open requests for that port are + * permitted. + */ void channel_request_remote_forwarding(int port, const char *host, int remote_port); -/* Permits opening to any host/port in SSH_MSG_PORT_OPEN. This is usually - called by the server, because the user could connect to any port anyway, - and the server has no way to know but to trust the client anyway. */ +/* + * Permits opening to any host/port in SSH_MSG_PORT_OPEN. This is usually + * called by the server, because the user could connect to any port anyway, + * and the server has no way to know but to trust the client anyway. + */ void channel_permit_all_opens(void); -/* This is called after receiving CHANNEL_FORWARDING_REQUEST. This initates - listening for the port, and sends back a success reply (or disconnect - message if there was an error). This never returns if there was an - error. */ +/* + * This is called after receiving CHANNEL_FORWARDING_REQUEST. This initates + * listening for the port, and sends back a success reply (or disconnect + * message if there was an error). This never returns if there was an error. + */ void channel_input_port_forward_request(int is_root); -/* This is called after receiving PORT_OPEN message. This attempts to connect - to the given host:port, and sends back CHANNEL_OPEN_CONFIRMATION or - CHANNEL_OPEN_FAILURE. */ +/* + * This is called after receiving PORT_OPEN message. This attempts to + * connect to the given host:port, and sends back CHANNEL_OPEN_CONFIRMATION + * or CHANNEL_OPEN_FAILURE. + */ void channel_input_port_open(int payload_len); -/* Creates a port for X11 connections, and starts listening for it. - Returns the display name, or NULL if an error was encountered. */ +/* + * Creates a port for X11 connections, and starts listening for it. Returns + * the display name, or NULL if an error was encountered. + */ char *x11_create_display(int screen); -/* Creates an internet domain socket for listening for X11 connections. - Returns a suitable value for the DISPLAY variable, or NULL if an error - occurs. */ +/* + * Creates an internet domain socket for listening for X11 connections. + * Returns a suitable value for the DISPLAY variable, or NULL if an error + * occurs. + */ char *x11_create_display_inet(int screen); -/* This is called when SSH_SMSG_X11_OPEN is received. The packet contains - the remote channel number. We should do whatever we want, and respond - with either SSH_MSG_OPEN_CONFIRMATION or SSH_MSG_OPEN_FAILURE. */ +/* + * This is called when SSH_SMSG_X11_OPEN is received. The packet contains + * the remote channel number. We should do whatever we want, and respond + * with either SSH_MSG_OPEN_CONFIRMATION or SSH_MSG_OPEN_FAILURE. + */ void x11_input_open(int payload_len); -/* Requests forwarding of X11 connections. This should be called on the - client only. */ +/* + * Requests forwarding of X11 connections. This should be called on the + * client only. + */ void x11_request_forwarding(void); -/* Requests forwarding for X11 connections, with authentication spoofing. - This should be called in the client only. */ +/* + * Requests forwarding for X11 connections, with authentication spoofing. + * This should be called in the client only. + */ void x11_request_forwarding_with_spoofing(const char *proto, const char *data); /* Sends a message to the server to request authentication fd forwarding. */ void auth_request_forwarding(void); -/* Returns the name of the forwarded authentication socket. Returns NULL - if there is no forwarded authentication socket. The returned value points - to a static buffer. */ +/* + * Returns the name of the forwarded authentication socket. Returns NULL if + * there is no forwarded authentication socket. The returned value points to + * a static buffer. + */ char *auth_get_socket_name(void); -/* This if called to process SSH_CMSG_AGENT_REQUEST_FORWARDING on the server. - This starts forwarding authentication requests. */ +/* + * This if called to process SSH_CMSG_AGENT_REQUEST_FORWARDING on the server. + * This starts forwarding authentication requests. + */ void auth_input_request_forwarding(struct passwd * pw); /* This is called to process an SSH_SMSG_AGENT_OPEN message. */ void auth_input_open_request(void); -/* Returns true if the given string matches the pattern (which may contain - ? and * as wildcards), and zero if it does not match. */ +/* + * Returns true if the given string matches the pattern (which may contain ? + * and * as wildcards), and zero if it does not match. + */ int match_pattern(const char *s, const char *pattern); -/* Expands tildes in the file name. Returns data allocated by xmalloc. - Warning: this calls getpw*. */ +/* + * 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); -/* 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). */ +/* + * 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(int pid, int fdin, int fdout, int fderr); /* Client side main loop for the interactive session. */ @@ -563,9 +677,11 @@ #ifdef KRB4 #include -/* 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. */ +/* + * 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);