/*
* pppd.h - PPP daemon global declarations.
*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation is hereby granted, provided that the above copyright
* notice appears in all copies.
*
* SUN MAKES NO REPRESENTATION OR WARRANTIES ABOUT THE SUITABILITY OF
* THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES
*
* Copyright (c) 1989 Carnegie Mellon University.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by Carnegie Mellon University. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id: pppd.h,v 1.54 2000/04/15 10:10:25 paulus Exp $
*/
#ifndef __PPPD_H__
#define __PPPD_H__
#include <stdio.h> /* for FILE */
#include <limits.h> /* for NGROUPS_MAX */
#include <sys/param.h> /* for MAXPATHLEN and BSD4_4, if defined */
#include <sys/types.h> /* for u_int32_t, if defined */
#include <sys/time.h> /* for struct timeval */
#include <net/ppp_defs.h>
#if defined(__STDC__)
#include <stdarg.h>
#define __V(x) x
#else
#include <varargs.h>
#define __V(x) (va_alist) va_dcl
#define const
#define volatile
#endif /* __STDC__ */
#ifdef INET6
#include "eui64.h"
#endif /* INET6 */
#ifdef HAVE_MULTILINK
#include "tdb.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* Limits.
*/
#define NUM_PPP 1 /* One PPP interface supported (per process) */
#define MAXWORDLEN 1024 /* max length of word in file (incl null) */
#define MAXARGS 1 /* max # args to a command */
#define MAXNAMELEN 256 /* max length of name for auth */
#define MAXSECRETLEN 256 /* max length of password or secret */
#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN MAXNAMELEN /* max length of hostname */
#endif /* MAXHOSTNAMELEN */
/*
* If this evaluates non-zero, then sifup() must be called before
* sifaddr().
*/
#define SIFUPFIRST \
(defined(SVR4) && (defined(SNI) || defined(__USLC__)))
/*
* If this evaluates non-zero, then sif6up() must be called before
* sif6addr().
*/
#define SIF6UPFIRST \
(defined(__linux__) || (defined(SVR4) && (defined(SNI) || defined(__USLC__))))
/*
* Option descriptor structure.
*/
typedef unsigned char bool;
enum opt_type {
o_special_noarg = 0,
o_special = 1,
o_bool,
o_int,
o_uint32,
o_string
};
typedef struct {
char *name; /* name of the option */
enum opt_type type;
void *addr;
char *description;
int flags;
void *addr2;
int upper_limit;
int lower_limit;
} option_t;
/*
* Values for flags.
*/
#define OPT_VALUE 0xff /* mask for presupplied value */
#define OPT_HEX 0x100 /* int option is in hex */
#define OPT_NOARG 0x200 /* option doesn't take argument */
#define OPT_OR 0x400 /* OR in argument to value */
#define OPT_INC 0x800 /* increment value */
#define OPT_PRIV 0x1000 /* privileged option */
#define OPT_STATIC 0x2000 /* string option goes into static array */
#define OPT_LLIMIT 0x4000 /* check value against lower limit */
#define OPT_ULIMIT 0x8000 /* check value against upper limit */
#define OPT_LIMITS (OPT_LLIMIT|OPT_ULIMIT)
#define OPT_ZEROOK 0x10000 /* 0 value is OK even if not within limits */
#define OPT_NOINCR 0x20000 /* value mustn't be increased */
#define OPT_ZEROINF 0x40000 /* with OPT_NOINCR, 0 == infinity */
#define OPT_DISABLE 0x80000 /* ignore option */
#define OPT_A2INFO 0x100000 /* addr2 -> option_info to update */
#define OPT_A2COPY 0x200000 /* addr2 -> second location to rcv value */
#define OPT_ENABLE 0x400000 /* use *addr2 as enable for option */
#define OPT_PRIVFIX 0x800000 /* can't be overridden if noauth */
#define OPT_PREPASS 0x1000000 /* do this opt in pre-pass to find device */
#define OPT_INITONLY 0x2000000 /* option can only be set in init phase */
#define OPT_DEVEQUIV 0x4000000 /* equiv to device name */
#define OPT_DEVNAM (OPT_PREPASS | OPT_INITONLY | OPT_DEVEQUIV)
#define OPT_VAL(x) ((x) & OPT_VALUE)
#ifndef GIDSET_TYPE
#define GIDSET_TYPE gid_t
#endif /* GIDSET_TYPE */
/*
* Structure representing a list of permitted IP addresses.
*/
struct permitted_ip {
int permit; /* 1 = permit, 0 = forbid */
u_int32_t base; /* match if (addr & mask) == base */
u_int32_t mask; /* base and mask are in network byte order */
};
/*
* Unfortunately, the linux kernel driver uses a different structure
* for statistics from the rest of the ports.
* This structure serves as a common representation for the bits
* pppd needs.
*/
struct pppd_stats {
ppp_counter_t bytes_in;
ppp_counter_t bytes_out;
ppp_counter_t pkts_in;
ppp_counter_t pkts_out;
};
/*
* Used for storing a sequence of words. Usually malloced.
*/
struct wordlist {
struct wordlist *next;
char *word;
};
/*
* Global variables.
*/
extern bool hungup; /* Physical layer has disconnected */
extern int ifunit; /* Interface unit number */
extern char ifname[32]; /* Interface name */
extern int ttyfd; /* Serial device file descriptor */
extern char hostname[]; /* Our hostname */
extern u_char outpacket_buf[]; /* Buffer for outgoing packets */
extern int phase; /* Current state of link - see values below */
extern int baud_rate; /* Current link speed in bits/sec */
extern char *progname; /* Name of this program */
extern int redirect_stderr;/* Connector's stderr should go to file */
extern char peer_authname[];/* Authenticated name of peer */
extern bool privileged; /* We were run by real-uid root */
extern bool need_holdoff; /* Need holdoff period after link terminates */
extern char **script_env; /* Environment variables for scripts */
extern bool detached; /* Have detached from controlling tty */
extern GIDSET_TYPE groups[NGROUPS_MAX]; /* groups the user is in */
extern int ngroups; /* How many groups valid in groups */
extern struct pppd_stats link_stats; /* byte/packet counts etc. for link */
extern bool link_stats_valid; /* set if link_stats is valid */
extern int link_connect_time; /* time the link was up for */
extern int using_pty; /* using pty as device (notty or pty opt.) */
extern int log_to_fd; /* logging to this fd as well as syslog */
extern bool log_to_file; /* log_to_fd is a file */
extern bool log_to_specific_fd; /* log_to_fd was specified by user */
extern char *no_ppp_msg; /* message to print if ppp not in kernel */
extern volatile int status; /* exit status for pppd */
extern int devnam_fixed; /* can no longer change devnam */
extern int unsuccess; /* # unsuccessful connection attempts */
extern int do_callback; /* set if we want to do callback next */
extern int doing_callback; /* set if this is a callback */
extern u_char nak_buffer[]; /* where we construct a nak packet */
extern u_char inpacket_buf[]; /* buffer for incoming packet */
extern bool direct_tty; /* use standard input directly; not a tty */
extern int absmax_mru; /* absolute maximum link (not i/f) MRU */
extern int absmax_mtu; /* absolute maximum link (not i/f) MTU */
extern int pty_slave; /* slave side of PTY, if any */
extern bool early_log; /* avoid logging to stdout */
/*
* Values for do_callback and doing_callback.
*/
#define CALLBACK_DIALIN 1 /* we are expecting the call back */
#define CALLBACK_DIALOUT 2 /* we are dialling out to call back */
/*
* Variables set by command-line options.
*/
extern int debug; /* Debug flag */
extern int kdebugflag; /* Tell kernel to print debug messages */
extern int default_device; /* Using /dev/tty or equivalent */
extern char devnam[MAXPATHLEN]; /* Device name */
extern char ppp_devnam[MAXPATHLEN]; /* Device name (might be pty) */
extern int crtscts; /* Use hardware flow control */
extern bool modem; /* Use modem control lines */
extern int inspeed; /* Input/Output speed requested */
extern u_int32_t netmask; /* IP netmask to set on interface */
extern bool lockflag; /* Create lock file to lock the serial dev */
extern bool nodetach; /* Don't detach from controlling tty */
extern bool updetach; /* Detach from controlling tty when link up */
extern char *initializer; /* Script to initialize physical link */
extern char *connect_script; /* Script to establish physical link */
extern char *disconnect_script; /* Script to disestablish physical link */
extern char *welcomer; /* Script to welcome client after connection */
extern char *ptycommand; /* Command to run on other side of pty */
extern int maxconnect; /* Maximum connect time (seconds) */
extern char user[MAXNAMELEN];/* Our name for authenticating ourselves */
extern char passwd[MAXSECRETLEN]; /* Password for PAP or CHAP */
extern bool auth_required; /* Peer is required to authenticate */
extern bool persist; /* Reopen link after it goes down */
extern bool uselogin; /* Use /etc/passwd for checking PAP */
extern char our_name[MAXNAMELEN];/* Our name for authentication purposes */
extern char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
extern bool explicit_remote;/* remote_name specified with remotename opt */
extern bool demand; /* Do dial-on-demand */
extern char *ipparam; /* Extra parameter for ip up/down scripts */
extern bool cryptpap; /* Others' PAP passwords are encrypted */
extern int idle_time_limit;/* Shut down link if idle for this long */
extern int holdoff; /* Dead time before restarting */
extern bool holdoff_specified; /* true if user gave a holdoff value */
extern bool notty; /* Stdin/out is not a tty */
extern char *pty_socket; /* Socket to connect to pty */
extern char *record_file; /* File to record chars sent/received */
extern bool sync_serial; /* Device is synchronous serial device */
extern int maxfail; /* Max # of unsuccessful connection attempts */
extern char linkname[MAXPATHLEN]; /* logical name for link */
extern bool tune_kernel; /* May alter kernel settings as necessary */
extern int connect_delay; /* Time to delay after connect script */
extern int max_data_rate; /* max bytes/sec through charshunt */
extern int req_unit; /* interface unit number to use */
extern bool multilink; /* enable multilink operation */
extern bool noendpoint; /* don't send or accept endpt. discrim. */
extern char *bundle_name; /* bundle name for multilink */
#ifdef HAVE_MULTILINK
extern TDB_CONTEXT *pppdb; /* handle to multilink database context */
extern char db_key[]; /* multilink database key */
#endif
#ifdef PPP_FILTER
extern struct bpf_program pass_filter; /* Filter for pkts to pass */
extern struct bpf_program active_filter; /* Filter for link-active pkts */
#endif /* PPP_FILTER */
#ifdef MSLANMAN
extern bool ms_lanman; /* Use LanMan password instead of NT */
/* Has meaning only with MS-CHAP challenges */
#endif /* MXLANMAN */
extern char *current_option; /* the name of the option being parsed */
extern bool privileged_option; /* set iff the current option came from root */
extern char *option_source; /* string saying where the option came from */
extern int option_line; /* and from which line in the file */
extern bool already_ppp; /* device is already in PPP mode */
extern bool prepass; /* Doing pre-pass to find device name */
extern struct stat devstat; /* Result of stat() on device */
extern bool peer_nak_auth; /* Peer sent nak for our auth request */
extern u_short nak_auth_orig; /* Auth proto peer naked */
extern u_short nak_auth_proto; /* Auth proto peer suggested instead */
extern bool unsolicited_nak_auth; /* Peer asked us to authenticate */
extern u_short unsolicit_auth_proto; /* Auth proto peer wants */
extern bool peer_reject_auth; /* Peer sent reject for auth */
extern u_short reject_auth_proto; /* Protocol that peer rejected */
extern bool rejected_peers_auth; /* We sent a reject to the peer */
extern u_short rejected_auth_proto; /* Protocol that peer wanted to use */
extern bool naked_peers_auth; /* We sent a nak to the peer */
extern u_short naked_auth_orig; /* Protocol that we wanted to use */
extern u_short naked_auth_proto; /* Protocol that peer wants us to use */
/*
* Values for phase.
*/
#define PHASE_DEAD 0 /* RFC 1661; link terminated */
#define PHASE_INITIALIZE 1 /* execution begins */
#define PHASE_INITIALIZED 2 /* options ok; entering main loop */
#define PHASE_SERIALCONN 3 /* connecting to peer */
#define PHASE_CONNECTED 4 /* connecting to peer */
#define PHASE_DORMANT 5 /* waiting for demand-dial trigger */
#define PHASE_ESTABLISH 6 /* RFC 1661; LCP negotiation begins */
#define PHASE_AUTHENTICATE 7 /* RFC 1661; authentication begins */
#define PHASE_CALLBACK 8 /* negotiating for callback */
#define PHASE_NETWORK 9 /* RFC 1661; NCP negotiation begins */
#define PHASE_RUNNING 10 /* first NCP went to Opened state */
#define PHASE_TERMINATE 11 /* RFC 1661; LCP left Opened state */
#define PHASE_DISCONNECT 12 /* running disconnect script */
#define PHASE_HOLDOFF 13 /* waiting before restart */
#define PHASE_CALLINGBACK 14 /* calling back */
#define PHASE_EXIT 15 /* execution ends */
#define PHASE__NAMES \
"Dead", "Initialize", "Initialized", "Serialconn", "Connected", \
"Dormant", "Establish", "Authenticate", "Callback", "Network", \
"Running", "Terminate", "Disconnect", "Holdoff", "Callingback", \
"Exit"
/*
* The following struct gives the addresses of procedures to call
* for a particular protocol.
*/
struct protent {
u_short protocol; /* PPP protocol number */
/* Initialization procedure */
void (*init) __P((int unit));
/* Process a received packet */
void (*input) __P((int unit, u_char *pkt, int len));
/* Process a received protocol-reject */
void (*protrej) __P((int unit));
/* Lower layer has come up */
void (*lowerup) __P((int unit));
/* Lower layer has gone down */
void (*lowerdown) __P((int unit));
/* Open the protocol */
void (*open) __P((int unit));
/* Close the protocol */
void (*close) __P((int unit, char *reason));
/* Print a packet in readable form */
int (*printpkt) __P((u_char *pkt, int len,
void (*printer) __P((void *, const char *, ...)),
void *arg));
/* Process a received data packet */
void (*datainput) __P((int unit, u_char *pkt, int len));
bool enabled_flag; /* 0 iff protocol is disabled */
char *name; /* Text name of protocol */
char *data_name; /* Text name of corresponding data protocol */
option_t *options; /* List of command-line options */
/* Check requested options, assign defaults */
void (*check_options) __P((void));
/* Configure interface for demand-dial */
int (*demand_conf) __P((int unit));
/* Say whether to bring up link for this pkt */
int (*active_pkt) __P((u_char *pkt, int len));
/* Print current status to file or syslog (if strptr == NULL) */
void (*print_stat) __P((int unit, FILE *strptr));
};
/*
* This structure is used to store information about certain
* options, such as where the option value came from (/etc/ppp/options,
* command line, etc.) and whether it came from a privileged source.
*/
struct option_info {
bool priv; /* was value set by sysadmin? */
char *source; /* where option came from */
int line; /* line number where the option came from */
};
extern struct option_info devnam_info;
extern struct option_info initializer_info;
extern struct option_info connect_script_info;
extern struct option_info disconnect_script_info;
extern struct option_info welcomer_info;
extern struct option_info ptycommand_info;
extern struct option_info ipsrc_info;
extern struct option_info ipdst_info;
extern struct option_info speed_info;
/*
* Table of pointers to supported protocols.
*/
extern struct protent *protocols[];
/*
* Prototypes.
*/
/*
* Procedures exported from main.c.
*/
extern void set_ifunit __P((int)); /* set stuff that depends on ifunit */
extern void detach __P((void)); /* Detach from controlling tty */
extern void die __P((int)); /* Cleanup and exit */
extern void quit __P((void)); /* like die(1) */
extern void novm __P((char *)); /* Say we ran out of memory, and die */
extern void timeout __P((void (*func)(void *), void *arg, int t));
/* Call func(arg) after t seconds */
extern void untimeout __P((void (*func)(void *), void *arg));
/* Cancel call to func(arg) */
extern pid_t run_program __P((char *prog, char **args, int must_exist,
void (*done)(void *, int), void *arg));
/* Run program prog with args in child */
extern void reopen_log __P((void)); /* (re)open the connection to syslog */
extern void update_link_stats __P((int)); /* Get stats at link termination */
/* set script env var */
extern void script_setenv __P((const char *, const char *, int));
extern void script_unsetenv __P((const char *)); /* unset script env var */
extern const char *script_getenv __P((const char *var));
extern void new_phase __P((int)); /* signal start of new phase */
extern void print_ncpstate __P((int, FILE *)); /* prints NCP state */
extern const char *protocol_name __P((int proto)); /* canonical name */
extern const char *phase_name __P((int phaseval));
/*
* Procedures exported from utils.c.
*/
extern void log_packet __P((u_char *, int, const char *, int));
/* Format a packet and log it with syslog */
extern void print_string __P((char *, int, void (*)(void *, const char *, ...),
void *)); /* Format a string for output */
extern int slprintf __P((char *, int, const char *, ...)); /* sprintf++ */
extern int vslprintf __P((char *, int, const char *, va_list));/* vsprintf++ */
extern size_t strlcpy __P((char *, const char *, size_t)); /* safe strcpy */
extern size_t strlcat __P((char *, const char *, size_t)); /* safe strncpy */
extern void dbglog __P((const char *, ...));/* log a debug message */
extern void info __P((const char *, ...)); /* log an informational message */
extern void notice __P((const char *, ...));/* log a notice-level message */
extern void warn __P((const char *, ...)); /* log a warning message */
extern void error __P((const char *, ...)); /* log an error message */
extern void fatal __P((const char *, ...));
/* log an error message and die(1) */
extern const char *code_name __P((int code, int shortflag));
/* Code to string */
extern int flprintf __P((FILE *, const char *, ...)); /* fprintf++ */
extern size_t strllen __P((const char *, size_t)); /* safe strlen */
extern const char *signal_name __P((int signum));
/*
* Procedures exported from auth.c
*/
extern void link_required __P((int)); /* we are starting to use the link */
extern void link_terminated __P((int)); /* we are finished with the link */
extern void link_down __P((int));
/* the LCP layer has left the Opened state */
extern void link_established __P((int)); /* the link is up; authenticate now */
extern void start_networks __P((void));
/* start all the network control protos */
extern void np_up __P((int, int)); /* a network protocol has come up */
extern void np_down __P((int, int)); /* a network protocol has gone down */
extern void np_finished __P((int, int));
/* a network protocol no longer needs link */
extern void auth_peer_fail __P((int, int));
/* peer failed to authenticate itself */
extern void auth_peer_success __P((int, int, char *, int));
/* peer successfully authenticated itself */
extern void auth_withpeer_fail __P((int, int));
/* we failed to authenticate ourselves */
extern void auth_withpeer_success __P((int, int));
/* we successfully authenticated ourselves */
extern void auth_check_options __P((void));
/* check authentication options supplied */
extern void auth_reset __P((int));
/* check what secrets we have */
extern int check_passwd __P((int, char *, int, char *, int, char **));
/* Check peer-supplied username/password */
extern int get_secret __P((int, char *, char *, char *, int *, int));
/* get "secret" for chap */
extern int auth_ip_addr __P((int, u_int32_t));
/* check if IP address is authorized */
extern int bad_ip_adrs __P((u_int32_t));
/* check if IP address is unreasonable */
/*
* Procedures exported from demand.c
*/
extern void demand_conf __P((void));
/* config interface(s) for demand-dial */
extern void demand_block __P((void)); /* set all NPs to queue up packets */
extern void demand_unblock __P((void)); /* set all NPs to pass packets */
extern void demand_discard __P((void)); /* set all NPs to discard packets */
extern void demand_rexmit __P((int)); /* retransmit saved frames for an NP */
extern int loop_chars __P((unsigned char *, int));
/* process chars from loopback */
extern int loop_frame __P((unsigned char *, int));
/* should we bring link up? */
/*
* Procedures exported from multilink.c
*/
extern void mp_check_options __P((void)); /* Check multilink-related options */
extern int mp_join_bundle __P((void));
/* join our link to an appropriate bundle */
/*
* Procedures exported from sys-*.c
*/
extern void sys_init __P((bool)); /* Do system-dependent initialization */
extern void sys_cleanup __P((void)); /* Restore system state before exiting */
extern int sys_check_options __P((void)); /* Check options specified */
extern void sys_options __P((void)); /* add or remove system options */
extern void sys_close __P((void)); /* Clean up in a child before execing */
extern int ppp_available __P((void));
/* Test whether ppp kernel support exists */
extern int get_pty __P((int *, int *, char *, int));
/* Get pty master/slave */
extern int open_ppp_loopback __P((void));
/* Open loopback for demand-dialling */
extern int establish_ppp __P((int));
/* Turn serial port into a ppp interface */
extern void restore_loop __P((void));
/* Transfer ppp unit back to loopback */
extern void disestablish_ppp __P((int));
/* Restore port to normal operation */
extern void make_new_bundle __P((int, int, int, int)); /* Create new bundle */
extern int bundle_attach __P((int)); /* Attach link to existing bundle */
extern void cfg_bundle __P((int, int, int, int));
/* Configure existing bundle */
extern void clean_check __P((void)); /* Check if line was 8-bit clean */
extern void set_up_tty __P((int, int));
/* Set up port's speed, parameters, etc. */
extern void restore_tty __P((int)); /* Restore port's original parameters */
extern void setdtr __P((int, int)); /* Raise or lower port's DTR line */
extern void output __P((int, u_char *, int)); /* Output a PPP packet */
extern void wait_input __P((struct timeval *));
/* Wait for input, with timeout */
extern void add_fd __P((int)); /* Add fd to set to wait for */
extern void remove_fd __P((int)); /* Remove fd from set to wait for */
extern int read_packet __P((u_char *)); /* Read PPP packet */
extern int get_loop_output __P((void)); /* Read pkts from loopback */
extern void ppp_send_config __P((int, int, u_int32_t, int, int));
/* Configure i/f transmit parameters */
extern void ppp_set_xaccm __P((int, ext_accm));
/* Set extended transmit ACCM */
extern void ppp_recv_config __P((int, int, u_int32_t, int, int));
/* Configure i/f receive parameters */
#ifdef NEGOTIATE_FCS
extern void ppp_send_fcs __P((int unit, int fcstype));
extern void ppp_recv_fcs __P((int unit, int fcstype));
#endif /* NEGOTIATE_FCS */
#ifdef MUX_FRAME
extern void ppp_send_muxoption __P((int ,u_int32_t));
extern void ppp_recv_muxoption __P((int ,u_int32_t));
#endif /* MUX_FRAME */
extern int ccp_test __P((int, u_char *, int, int));
/* Test support for compression scheme */
#ifdef COMP_TUNE
extern void ccp_tune __P((int, int)); /* Tune compression effort level */
#endif /* COMP_TUNE */
extern void ccp_flags_set __P((int, int, int));
/* Set kernel CCP state */
extern int ccp_fatal_error __P((int));
/* Test for fatal decomp error in kernel */
extern int get_idle_time __P((int, struct ppp_idle *));
/* Find out how long link has been idle */
extern int get_ppp_stats __P((int, struct pppd_stats *));
/* Return link statistics */
extern int sifvjcomp __P((int, int, int, int));
/* Configure VJ TCP header compression */
extern int sifup __P((int)); /* Configure i/f up for one protocol */
extern int sifnpmode __P((int u, int proto, enum NPmode mode));
/* Set mode for handling packets for proto */
extern int sifdown __P((int)); /* Configure i/f down for one protocol */
extern int sifaddr __P((int, u_int32_t, u_int32_t, u_int32_t));
/* Configure IPv4 addresses for i/f */
extern int cifaddr __P((int, u_int32_t, u_int32_t));
/* Reset i/f IP addresses */
extern void sys_block_proto __P((uint16_t));
extern void sys_unblock_proto __P((uint16_t));
#ifdef INET6
extern int sif6addr __P((int, eui64_t, eui64_t));
/* Configure IPv6 addresses for i/f */
extern int cif6addr __P((int, eui64_t, eui64_t));
/* Remove an IPv6 address from i/f */
#endif /* INET6 */
extern int sifdefaultroute __P((int, u_int32_t, u_int32_t));
/* Create default route through i/f */
extern int cifdefaultroute __P((int, u_int32_t, u_int32_t));
/* Delete default route through i/f */
extern int sifproxyarp __P((int unit, u_int32_t addr, int flag));
/* Add proxy ARP entry for peer */
extern int cifproxyarp __P((int unit, u_int32_t addr));
/* Delete proxy ARP entry for peer */
extern u_int32_t GetMask __P((u_int32_t));
/* Get appropriate netmask for address */
extern int lock __P((char *)); /* Create lock file for device */
extern int relock __P((int)); /* Rewrite lock file with new pid */
extern void unlock __P((void)); /* Delete previously-created lock file */
extern void logwtmp __P((const char *, const char *, const char *));
/* Write entry to wtmp file */
extern int get_host_seed __P((void));
/* Get host-dependent random number seed */
extern int have_route_to __P((u_int32_t)); /* Check if route to addr exists */
#ifdef PPP_FILTER
extern int set_filters __P((struct bpf_program *pass,
struct bpf_program *active));
/* Set filter programs in kernel */
#endif /* PPP_FILTER */
#ifdef IPX_CHANGE
extern int sipxfaddr __P((int, unsigned long, unsigned char *));
extern int cipxfaddr __P((int));
#endif /* IPX_CHANGE */
extern int get_if_hwaddr __P((u_char *addr, int msize, char *name));
extern int get_first_hwaddr __P((u_char *addr, int msize));
#if defined(INET6) && defined(SOL2)
extern int ether_to_eui64 __P((eui64_t *p_eui64));
extern int sif6up __P((int unit));
extern int sif6down __P((int unit));
extern int sif6mtu __P((int mtu));
extern int sif6flags __P((u_int32_t flags, int set));
#endif /* INET6 && SOL2*/
#if defined(INET6) && !defined(SOL2)
#define sif6up sifup
#endif
extern int sifmtu __P((int mtu));
extern int siflags __P((u_int32_t flags, int set));
extern void sys_ifname __P((void));
extern void sys_print_state __P((FILE *strptr));
extern int sys_extra_fd __P((void));
/*
* Procedures exported from options.c
*/
extern int parse_args __P((int argc, char **argv));
/* Parse options from arguments given */
extern int options_from_file __P((char *filename, bool must_exist,
bool check_prot, bool privileged));
/* Parse options from an options file */
extern int options_from_user __P((void));
/* Parse options from user's .ppprc */
extern int options_for_tty __P((void));
/* Parse options from /etc/ppp/options.tty */
extern int options_from_list __P((struct wordlist *, bool privileged));
/* Parse options from a wordlist */
extern int getword __P((FILE *f, char *word, int *newlinep, char *filename));
/* Read a word from a file */
extern void option_error __P((char *fmt, ...));
/* Print an error message about an option */
extern int int_option __P((char *, int *));
/* Simplified number_option for decimal ints */
extern void add_options __P((option_t *));
/* Add extra options */
extern int parse_dotted_ip __P((char *, u_int32_t *));
/* Parse dotted IP notation */
extern option_t *remove_option __P((char *));
/* Remove (disable) an option */
extern void save_source __P((struct option_info *));
/* Save the source information (where an option comes from) */
extern void set_source __P((struct option_info *));
/* Set the source (for logging option errors detected after parsing) */
extern const char *name_source __P((struct option_info *));
/* Return a string containing the option source and line number */
/*
* Hooks to enable plugins to change various things.
*/
extern int (*new_phase_hook) __P((int new, int old));
extern int (*idle_time_hook) __P((struct ppp_idle *));
extern int (*holdoff_hook) __P((void));
extern int (*pap_check_hook) __P((void));
extern int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp,
struct wordlist **paddrs, struct wordlist **popts));
extern void (*pap_logout_hook) __P((void));
extern int (*pap_passwd_hook) __P((char *user, char *passwd));
extern void (*ip_up_hook) __P((void));
extern void (*ip_down_hook) __P((void));
extern int (*check_options_hook) __P((uid_t uid));
/* extern int (*attach_device_hook) __P((uid_t uid, char *devnam)); */
extern int (*updown_script_hook) __P((const char ***argsp));
struct strbuf; /* forward declaration */
extern int (*sys_read_packet_hook) __P((int retv, struct strbuf *ctrl,
struct strbuf *data, int flags));
extern void (*device_pipe_hook) __P((int pipefd));
/*
* Inline versions of get/put char/short/long.
* Pointer is advanced; we assume that both arguments
* are lvalues and will already be in registers.
* cp MUST be u_char *.
*/
#define GETCHAR(c, cp) { \
(c) = *(cp)++; \
}
#define PUTCHAR(c, cp) { \
*(cp)++ = (u_char) (c); \
}
#define GETSHORT(s, cp) { \
(s) = *(cp)++ << 8; \
(s) |= *(cp)++; \
}
#define PUTSHORT(s, cp) { \
*(cp)++ = (u_char) ((s) >> 8); \
*(cp)++ = (u_char) (s); \
}
#define GETLONG(l, cp) { \
(l) = *(cp)++ << 8; \
(l) |= *(cp)++; (l) <<= 8; \
(l) |= *(cp)++; (l) <<= 8; \
(l) |= *(cp)++; \
}
#define PUTLONG(l, cp) { \
*(cp)++ = (u_char) ((l) >> 24); \
*(cp)++ = (u_char) ((l) >> 16); \
*(cp)++ = (u_char) ((l) >> 8); \
*(cp)++ = (u_char) (l); \
}
/*
* For values that are kept internally in network byte order.
*/
#define GETNLONG(l, cp) { \
u_int32_t getnlong_val; \
getnlong_val = *(cp)++ << 8; \
getnlong_val |= *(cp)++; getnlong_val <<= 8; \
getnlong_val |= *(cp)++; getnlong_val <<= 8; \
getnlong_val |= *(cp)++; \
(l) = htonl(getnlong_val); \
}
#define PUTNLONG(l, cp) { \
u_int32_t putnlong_val = ntohl(l); \
*(cp)++ = (u_char) (putnlong_val >> 24); \
*(cp)++ = (u_char) (putnlong_val >> 16); \
*(cp)++ = (u_char) (putnlong_val >> 8); \
*(cp)++ = (u_char) putnlong_val; \
}
#define INCPTR(n, cp) ((cp) += (n))
#define DECPTR(n, cp) ((cp) -= (n))
/*
* System dependent definitions for user-level 4.3BSD UNIX implementation.
*/
#define TIMEOUT(r, f, t) timeout((r), (f), (t))
#define UNTIMEOUT(r, f) untimeout((r), (f))
#ifndef SOL2
#define BCOPY(s, d, l) memcpy(d, s, l)
#define BZERO(s, n) memset(s, 0, n)
#else
#include <strings.h>
#define BCOPY bcopy
#define BZERO bzero
#endif
#define PRINTMSG(m, l) { info("Remote message: %0.*v", l, m); }
/*
* MAKEHEADER - Add Header fields to a packet.
*/
#define MAKEHEADER(p, t) { \
PUTCHAR(PPP_ALLSTATIONS, p); \
PUTCHAR(PPP_UI, p); \
PUTSHORT(t, p); }
/*
* Exit status values.
*/
#define EXIT_OK 0
#define EXIT_FATAL_ERROR 1
#define EXIT_OPTION_ERROR 2
#define EXIT_NOT_ROOT 3
#define EXIT_NO_KERNEL_SUPPORT 4
#define EXIT_USER_REQUEST 5
#define EXIT_LOCK_FAILED 6
#define EXIT_OPEN_FAILED 7
#define EXIT_CONNECT_FAILED 8
#define EXIT_PTYCMD_FAILED 9
#define EXIT_NEGOTIATION_FAILED 10
#define EXIT_PEER_AUTH_FAILED 11
#define EXIT_IDLE_TIMEOUT 12
#define EXIT_CONNECT_TIME 13
#define EXIT_CALLBACK 14
#define EXIT_PEER_DEAD 15
#define EXIT_HANGUP 16
#define EXIT_LOOPBACK 17
#define EXIT_INIT_FAILED 18
#define EXIT_AUTH_TOPEER_FAILED 19
/*
* Character shunt constants.
*/
#define MAXLEVELMINSIZE 100
/*
* Debug macros. Slightly useful for finding bugs in pppd, not particularly
* useful for finding out why your connection isn't being established.
*/
#ifdef DEBUGALL
#define DEBUGMAIN 1
#define DEBUGSYS 1
#define DEBUGLCP 1
#define DEBUGIPCP 1
#define DEBUGIPV6CP 1
#define DEBUGCHAP 1
#define DEBUGIPXCP 1
#define LOG_PPP LOG_LOCAL2 /* Log here when debugging all */
#endif /* DEBUGALL */
#ifndef LOG_PPP /* we use LOG_DAEMON for syslog by default */
#define LOG_PPP LOG_DAEMON
#endif /* LOG_PPP */
#ifdef DEBUGMAIN
#define MAINDEBUG(x) if (debug) dbglog x
#else
#define MAINDEBUG(x) ((void) 0)
#endif /* DEBUGMAIN */
#ifdef DEBUGSYS
#define SYSDEBUG(x) if (debug) dbglog x
#else
#define SYSDEBUG(x) ((void) 0)
#endif /* DEBUGSYS */
#ifdef DEBUGLCP
#define LCPDEBUG(x) if (debug) dbglog x
#else
#define LCPDEBUG(x) ((void) 0)
#endif /* DEBUGLCP */
#ifdef DEBUGIPCP
#define IPCPDEBUG(x) if (debug) dbglog x
#else
#define IPCPDEBUG(x) ((void) 0)
#endif /* DEBUGIPCP */
#ifdef DEBUGIPV6CP
#define IPV6CPDEBUG(x) if (debug) dbglog x
#else
#define IPV6CPDEBUG(x) ((void) 0)
#endif /* DEBUGIPV6CP */
#ifdef DEBUGCHAP
#define CHAPDEBUG(x) if (debug) dbglog x
#else
#define CHAPDEBUG(x) ((void) 0)
#endif /* DEBUGCHAP */
#ifdef DEBUGIPXCP
#define IPXCPDEBUG(x) if (debug) dbglog x
#else
#define IPXCPDEBUG(x) ((void) 0)
#endif /* DEBUGIPXCP */
#ifndef SIGTYPE
#if defined(sun) || defined(SYSV) || defined(POSIX_SOURCE)
#define SIGTYPE void
#else
#define SIGTYPE int
#endif /* defined(sun) || defined(SYSV) || defined(POSIX_SOURCE) */
#endif /* SIGTYPE */
#ifndef MIN
#define MIN(a, b) ((a) < (b)? (a): (b))
#endif /* MIN */
#ifndef MAX
#define MAX(a, b) ((a) > (b)? (a): (b))
#endif /* MAX */
#ifndef Dim
#define Dim(x) (sizeof (x) / sizeof (*(x)))
#endif /* Dim */
#ifndef NBBY
#define NBBY 8
#endif /* NBBY */
#ifndef isset
#define isset(arr, val) (((u_char *)(arr))[(val)/NBBY] & (1<<((val)%NBBY)))
#endif /* isset */
#ifndef setbit
#define setbit(arr, val) (((u_char *)(arr))[(val)/NBBY] |= (1<<((val)%NBBY)))
#endif /* setbit */
#define IP_HDRLEN 20 /* bytes */
#define IP_OFFMASK 0x1fff
#define TCP_HDRLEN 20
/*
* We use these macros because the IP header may be at an odd address,
* and some compilers might use word loads to get th_off or ip_hl.
*/
#define net_short(x) (((x)[0] << 8) + (x)[1])
#define native_long(x) (htonl((net_short(x) << 16) + \
net_short((unsigned char *)(x) + 2)))
#define get_ipv(x) ((((unsigned char *)(x))[0] >> 4) & 0xF)
#define get_iphl(x) (((unsigned char *)(x))[0] & 0xF)
#define get_iplen(x) net_short((unsigned char *)(x) + 2)
#define get_ipoff(x) net_short((unsigned char *)(x) + 6)
#define get_ipproto(x) (((unsigned char *)(x))[9])
#define get_ipsrc(x) native_long((unsigned char *)(x) + 12)
#define get_ipdst(x) native_long((unsigned char *)(x) + 16)
#define get_ip6nh(x) (((unsigned char *)(x))[6])
#define get_ip6src(x) (((unsigned char *)(x))+8)
#define get_ip6dst(x) (((unsigned char *)(x))+24)
/* Ports for both UDP and TCP are first */
#define get_sport(x) net_short(x)
#define get_dport(x) net_short((unsigned char *)(x) + 2)
#define get_tcpoff(x) (((unsigned char *)(x))[12] >> 4)
#define get_tcpflags(x) (((unsigned char *)(x))[13])
/* Check for RFC 1918 (local use) addresses */
#define LOCAL_IP_ADDR(addr) \
(((addr) & 0xff000000) == 0x0a000000 || /* 10.x.x.x */ \
((addr) & 0xfff00000) == 0xac100000 || /* 172.16.x.x */ \
((addr) & 0xffff0000) == 0xc0a80000) /* 192.168.x.x */
#ifdef __cplusplus
}
#endif
#endif /* __PPPD_H__ */