/* * 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 /* for FILE */ #include /* for NGROUPS_MAX */ #include /* for MAXPATHLEN and BSD4_4, if defined */ #include /* for u_int32_t, if defined */ #include /* for struct timeval */ #include #if defined(__STDC__) #include #define __V(x) x #else #include #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(). */ #if (defined(SVR4) && (defined(SNI) || defined(__USLC__))) #define SIFUPFIRST (1) #else #define SIFUPFIRST (0) #endif /* * If this evaluates non-zero, then sif6up() must be called before * sif6addr(). */ #if (defined(__linux__) || \ (defined(SVR4) && (defined(SNI) || defined(__USLC__)))) #define SIF6UPFIRST (1) #else #define SIF6UPFIRST (0) #endif /* * 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 #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__ */