- More reformatting merged from OpenBSD CVS
- Merged OpenBSD CVS changes:
- [channels.c]
report from mrwizard@psu.edu via djm@ibs.com.au
- [channels.c]
set SO_REUSEADDR and SO_LINGER for forwarded ports.
chip@valinux.com via damien@ibs.com.au
- [nchan.c]
it's not an error() if shutdown_write failes in nchan.
- [readconf.c]
remove dead #ifdef-0-code
- [readconf.c servconf.c]
strcasecmp instead of tolower
- [scp.c]
progress meter overflow fix from damien@ibs.com.au
- [ssh-add.1 ssh-add.c]
SSH_ASKPASS support
- [ssh.1 ssh.c]
postpone fork_after_authentication until command execution,
request/patch from jahakala@cc.jyu.fi via damien@ibs.com.au
plus: use daemon() for backgrounding
diff --git a/ssh.h b/ssh.h
index f8426bf..e3fed05 100644
--- a/ssh.h
+++ b/ssh.h
@@ -13,7 +13,7 @@
*
*/
-/* RCSID("$Id: ssh.h,v 1.15 1999/11/24 13:26:23 damien Exp $"); */
+/* RCSID("$Id: ssh.h,v 1.16 1999/11/25 00:54:59 damien Exp $"); */
#ifndef SSH_H
#define SSH_H
@@ -25,9 +25,11 @@
#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. */
@@ -39,20 +41,28 @@
/* 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"
#ifndef ETCDIR
@@ -63,16 +73,16 @@
#define PIDDIR "/var/run"
#endif /* PIDDIR */
-/* 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"
@@ -89,73 +99,95 @@
#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. */
+/*
+ * 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
@@ -163,20 +195,20 @@
#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 */
@@ -226,45 +258,54 @@
/*------------ 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,
@@ -272,41 +313,57 @@
/*------------ 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. */
@@ -315,16 +372,20 @@
/* 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;
@@ -332,43 +393,55 @@
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);
@@ -418,9 +491,11 @@
/* 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(). */
@@ -431,9 +506,11 @@
/* 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. */
@@ -442,16 +519,20 @@
/* 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. */
@@ -473,8 +554,10 @@
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. */
@@ -483,92 +566,123 @@
/* 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. */
@@ -582,9 +696,11 @@
#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. */
+/*
+ * 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);