/* * pppd.h - PPP daemon global declarations. * * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The name "Carnegie Mellon University" must not be used to * endorse or promote products derived from this software without * prior written permission. For permission or any legal * details, please contact * Office of Technology Transfer * Carnegie Mellon University * 5000 Forbes Avenue * Pittsburgh, PA 15213-3890 * (412) 268-4387, fax: (412) 268-7395 * tech-transfer@andrew.cmu.edu * * 4. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by Computing Services * at Carnegie Mellon University (http://www.cmu.edu/computing/)." * * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * * $Id: pppd.h,v 1.96 2008/06/23 11:47:18 paulus Exp $ */ /* * TODO: */ #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 #include "patchlevel.h" #if defined(__STDC__) #include #define __V(x) x #else #include #define __V(x) (va_alist) va_dcl #define const #define volatile #endif #ifdef INET6 #include "eui64.h" #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 hostname or name for auth */ #define MAXSECRETLEN 256 /* max length of password or secret */ /* * 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, o_wild }; typedef struct { char *name; /* name of the option */ enum opt_type type; void *addr; char *description; unsigned int flags; void *addr2; int upper_limit; int lower_limit; const char *source; short int priority; short int winner; } 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 /* for u32, OR in argument to value */ #define OPT_INC 0x400 /* for o_int, increment value */ #define OPT_A2OR 0x800 /* for o_bool, OR arg to *(u_char *)addr2 */ #define OPT_PRIV 0x1000 /* privileged option */ #define OPT_STATIC 0x2000 /* string option goes into static array */ #define OPT_NOINCR 0x2000 /* for o_int, value mustn't be increased */ #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_HIDE 0x10000 /* for o_string, print value as ?????? */ #define OPT_A2LIST 0x20000 /* for o_special, keep list of values */ #define OPT_A2CLRB 0x20000 /* o_bool, clr val bits in *(u_char *)addr2 */ #define OPT_ZEROINF 0x40000 /* with OPT_NOINCR, 0 == infinity */ #define OPT_PRIO 0x80000 /* process option priorities for this option */ #define OPT_PRIOSUB 0x100000 /* subsidiary member of priority group */ #define OPT_ALIAS 0x200000 /* option is alias for previous option */ #define OPT_A2COPY 0x400000 /* addr2 -> second location to rcv value */ #define OPT_ENABLE 0x800000 /* use *addr2 as enable for option */ #define OPT_A2CLR 0x1000000 /* clear *(bool *)addr2 */ #define OPT_PRIVFIX 0x2000000 /* user can't override if set by root */ #define OPT_INITONLY 0x4000000 /* option can only be set in init phase */ #define OPT_DEVEQUIV 0x8000000 /* equiv to device name */ #define OPT_DEVNAM (OPT_INITONLY | OPT_DEVEQUIV) #define OPT_A2PRINTER 0x10000000 /* *addr2 is a fn for printing option */ #define OPT_A2STRVAL 0x20000000 /* *addr2 points to current string value */ #define OPT_NOPRINT 0x40000000 /* don't print this option at all */ #define OPT_VAL(x) ((x) & OPT_VALUE) /* Values for priority */ #define OPRIO_DEFAULT 0 /* a default value */ #define OPRIO_CFGFILE 1 /* value from a configuration file */ #define OPRIO_CMDLINE 2 /* value from the command line */ #define OPRIO_SECFILE 3 /* value from options in a secrets file */ #define OPRIO_ROOT 100 /* added to priority if OPT_PRIVFIX && root */ #ifndef GIDSET_TYPE #define GIDSET_TYPE gid_t #endif /* 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 { unsigned int bytes_in; unsigned int bytes_out; unsigned int pkts_in; unsigned int pkts_out; }; /* Used for storing a sequence of words. Usually malloced. */ struct wordlist { struct wordlist *next; char *word; }; /* An endpoint discriminator, used with multilink. */ #define MAX_ENDP_LEN 20 /* maximum length of discriminator value */ struct epdisc { unsigned char class; unsigned char length; unsigned char value[MAX_ENDP_LEN]; }; /* values for epdisc.class */ #define EPD_NULL 0 /* null discriminator, no data */ #define EPD_LOCAL 1 #define EPD_IP 2 #define EPD_MAC 3 #define EPD_MAGIC 4 #define EPD_PHONENUM 5 typedef void (*notify_func) __P((void *, int)); struct notifier { struct notifier *next; notify_func func; void *arg; }; /* * Global variables. */ extern int hungup; /* Physical layer has disconnected */ extern int ifunit; /* Interface unit number */ extern char ifname[]; /* Interface name */ extern char hostname[]; /* Our hostname */ extern u_char outpacket_buf[]; /* Buffer for outgoing packets */ extern int devfd; /* fd of underlying device */ extern int fd_ppp; /* fd for talking PPP */ 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 int auth_done[NUM_PPP]; /* Methods actually used for auth */ extern int privileged; /* We were run by real-uid root */ extern int need_holdoff; /* Need holdoff period after link terminates */ extern char **script_env; /* Environment variables for scripts */ extern int 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 int link_stats_valid; /* set if link_stats is valid */ extern unsigned 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_default; /* log_to_fd is default (stdout) */ extern char *no_ppp_msg; /* message to print if ppp not in kernel */ extern volatile int status; /* exit status for pppd */ extern bool 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 int error_count; /* # of times error() has been called */ extern char ppp_devnam[MAXPATHLEN]; extern char remote_number[MAXNAMELEN]; /* Remote telephone number, if avail. */ extern int ppp_session_number; /* Session number (eg PPPoE session) */ extern int fd_devnull; /* fd open to /dev/null */ extern int listen_time; /* time to listen first (ms) */ extern bool doing_multilink; extern bool multilink_master; extern bool bundle_eof; extern bool bundle_terminating; extern struct notifier *pidchange; /* for notifications of pid changing */ extern struct notifier *phasechange; /* for notifications of phase changes */ extern struct notifier *exitnotify; /* for notification that we're exiting */ extern struct notifier *sigreceived; /* notification of received signal */ extern struct notifier *ip_up_notifier; /* IPCP has come up */ extern struct notifier *ip_down_notifier; /* IPCP has gone down */ extern struct notifier *auth_up_notifier; /* peer has authenticated */ extern struct notifier *link_down_notifier; /* link has gone down */ extern struct notifier *fork_notifier; /* we are a new child process */ /* 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 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 bool session_mgmt; /* Do session management (login records) */ 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 */ extern bool dump_options; /* print out option values */ extern bool dryrun; /* check everything, print options, exit */ extern int child_wait; /* # seconds to wait for children at end */ #ifdef MAXOCTETS extern unsigned int maxoctets; /* Maximum octetes per session (in bytes) */ extern int maxoctets_dir; /* Direction : 0 - in+out (default) 1 - in 2 - out 3 - max(in,out) */ extern int maxoctets_timeout; /* Timeout for check of octets limit */ #define PPP_OCTETS_DIRECTION_SUM 0 #define PPP_OCTETS_DIRECTION_IN 1 #define PPP_OCTETS_DIRECTION_OUT 2 #define PPP_OCTETS_DIRECTION_MAXOVERAL 3 /* same as previos, but little different on RADIUS side */ #define PPP_OCTETS_DIRECTION_MAXSESSION 4 #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 #ifdef MSLANMAN extern bool ms_lanman; /* Use LanMan password instead of NT */ /* Has meaning only with MS-CHAP challenges */ #endif /* Values for auth_pending, auth_done */ #define PAP_WITHPEER 0x1 #define PAP_PEER 0x2 #define CHAP_WITHPEER 0x4 #define CHAP_PEER 0x8 #define EAP_WITHPEER 0x10 #define EAP_PEER 0x20 /* Values for auth_done only */ #define CHAP_MD5_WITHPEER 0x40 #define CHAP_MD5_PEER 0x80 #define CHAP_MS_SHIFT 8 /* LSB position for MS auths */ #define CHAP_MS_WITHPEER 0x100 #define CHAP_MS_PEER 0x200 #define CHAP_MS2_WITHPEER 0x400 #define CHAP_MS2_PEER 0x800 extern char *current_option; /* the name of the option being parsed */ extern int privileged_option; /* set iff the current option came from root */ extern char *option_source; /* string saying where the option came from */ extern int option_priority; /* priority of current options */ /* * Values for phase. */ #define PHASE_DEAD 0 #define PHASE_INITIALIZE 1 #define PHASE_SERIALCONN 2 #define PHASE_DORMANT 3 #define PHASE_ESTABLISH 4 #define PHASE_AUTHENTICATE 5 #define PHASE_CALLBACK 6 #define PHASE_NETWORK 7 #define PHASE_RUNNING 8 #define PHASE_TERMINATE 9 #define PHASE_DISCONNECT 10 #define PHASE_HOLDOFF 11 #define PHASE_MASTER 12 /* * 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 *, 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)); }; /* Table of pointers to supported protocols */ extern struct protent *protocols[]; /* * This struct contains pointers to a set of procedures for * doing operations on a "channel". A channel provides a way * to send and receive PPP packets - the canonical example is * a serial port device in PPP line discipline (or equivalently * with PPP STREAMS modules pushed onto it). */ struct channel { /* set of options for this channel */ option_t *options; /* find and process a per-channel options file */ void (*process_extra_options) __P((void)); /* check all the options that have been given */ void (*check_options) __P((void)); /* get the channel ready to do PPP, return a file descriptor */ int (*connect) __P((void)); /* we're finished with the channel */ void (*disconnect) __P((void)); /* put the channel into PPP `mode' */ int (*establish_ppp) __P((int)); /* take the channel out of PPP `mode', restore loopback if demand */ void (*disestablish_ppp) __P((int)); /* set the transmit-side PPP parameters of the channel */ void (*send_config) __P((int, u_int32_t, int, int)); /* set the receive-side PPP parameters of the channel */ void (*recv_config) __P((int, u_int32_t, int, int)); /* cleanup on error or normal exit */ void (*cleanup) __P((void)); /* close the device, called in children after fork */ void (*close) __P((void)); }; extern struct channel *the_channel; /* * Prototypes. */ /* Procedures exported from main.c. */ void set_ifunit __P((int)); /* set stuff that depends on ifunit */ void detach __P((void)); /* Detach from controlling tty */ void die __P((int)); /* Cleanup and exit */ void quit __P((void)); /* like die(1) */ void novm __P((char *)); /* Say we ran out of memory, and die */ void timeout __P((void (*func)(void *), void *arg, int s, int us)); /* Call func(arg) after s.us seconds */ void untimeout __P((void (*func)(void *), void *arg)); /* Cancel call to func(arg) */ void record_child __P((int, char *, void (*) (void *), void *, int)); pid_t safe_fork __P((int, int, int)); /* Fork & close stuff in child */ int device_script __P((char *cmd, int in, int out, int dont_wait)); /* Run `cmd' with given stdin and stdout */ pid_t run_program __P((char *prog, char **args, int must_exist, void (*done)(void *), void *arg, int wait)); /* Run program prog with args in child */ void reopen_log __P((void)); /* (re)open the connection to syslog */ void print_link_stats __P((void)); /* Print stats, if available */ void reset_link_stats __P((int)); /* Reset (init) stats when link goes up */ void update_link_stats __P((int)); /* Get stats at link termination */ void script_setenv __P((char *, char *, int)); /* set script env var */ void script_unsetenv __P((char *)); /* unset script env var */ void new_phase __P((int)); /* signal start of new phase */ void add_notifier __P((struct notifier **, notify_func, void *)); void remove_notifier __P((struct notifier **, notify_func, void *)); void notify __P((struct notifier *, int)); int ppp_send_config __P((int, int, u_int32_t, int, int)); int ppp_recv_config __P((int, int, u_int32_t, int, int)); const char *protocol_name __P((int)); void remove_pidfiles __P((void)); void lock_db __P((void)); void unlock_db __P((void)); /* Procedures exported from tty.c. */ void tty_init __P((void)); /* Procedures exported from utils.c. */ void log_packet __P((u_char *, int, char *, int)); /* Format a packet and log it with syslog */ void print_string __P((char *, int, void (*) (void *, char *, ...), void *)); /* Format a string for output */ int slprintf __P((char *, int, char *, ...)); /* sprintf++ */ int vslprintf __P((char *, int, char *, va_list)); /* vsprintf++ */ size_t strlcpy __P((char *, const char *, size_t)); /* safe strcpy */ size_t strlcat __P((char *, const char *, size_t)); /* safe strncpy */ void dbglog __P((char *, ...)); /* log a debug message */ void info __P((char *, ...)); /* log an informational message */ void notice __P((char *, ...)); /* log a notice-level message */ void warn __P((char *, ...)); /* log a warning message */ void error __P((char *, ...)); /* log an error message */ void fatal __P((char *, ...)); /* log an error message and die(1) */ void init_pr_log __P((const char *, int)); /* initialize for using pr_log */ void pr_log __P((void *, char *, ...)); /* printer fn, output to syslog */ void end_pr_log __P((void)); /* finish up after using pr_log */ void dump_packet __P((const char *, u_char *, int)); /* dump packet to debug log if interesting */ ssize_t complete_read __P((int, void *, size_t)); /* read a complete buffer */ /* Procedures exported from auth.c */ void link_required __P((int)); /* we are starting to use the link */ void start_link __P((int)); /* bring the link up now */ void link_terminated __P((int)); /* we are finished with the link */ void link_down __P((int)); /* the LCP layer has left the Opened state */ void upper_layers_down __P((int));/* take all NCPs down */ void link_established __P((int)); /* the link is up; authenticate now */ void start_networks __P((int)); /* start all the network control protos */ void continue_networks __P((int)); /* start network [ip, etc] control protos */ void np_up __P((int, int)); /* a network protocol has come up */ void np_down __P((int, int)); /* a network protocol has gone down */ void np_finished __P((int, int)); /* a network protocol no longer needs link */ void auth_peer_fail __P((int, int)); /* peer failed to authenticate itself */ void auth_peer_success __P((int, int, int, char *, int)); /* peer successfully authenticated itself */ void auth_withpeer_fail __P((int, int)); /* we failed to authenticate ourselves */ void auth_withpeer_success __P((int, int, int)); /* we successfully authenticated ourselves */ void auth_check_options __P((void)); /* check authentication options supplied */ void auth_reset __P((int)); /* check what secrets we have */ int check_passwd __P((int, char *, int, char *, int, char **)); /* Check peer-supplied username/password */ int get_secret __P((int, char *, char *, char *, int *, int)); /* get "secret" for chap */ int get_srp_secret __P((int unit, char *client, char *server, char *secret, int am_server)); int auth_ip_addr __P((int, u_int32_t)); /* check if IP address is authorized */ int auth_number __P((void)); /* check if remote number is authorized */ int bad_ip_adrs __P((u_int32_t)); /* check if IP address is unreasonable */ /* Procedures exported from demand.c */ void demand_conf __P((void)); /* config interface(s) for demand-dial */ void demand_block __P((void)); /* set all NPs to queue up packets */ void demand_unblock __P((void)); /* set all NPs to pass packets */ void demand_discard __P((void)); /* set all NPs to discard packets */ void demand_rexmit __P((int)); /* retransmit saved frames for an NP */ int loop_chars __P((unsigned char *, int)); /* process chars from loopback */ int loop_frame __P((unsigned char *, int)); /* should we bring link up? */ /* Procedures exported from multilink.c */ #ifdef HAVE_MULTILINK void mp_check_options __P((void)); /* Check multilink-related options */ int mp_join_bundle __P((void)); /* join our link to an appropriate bundle */ void mp_exit_bundle __P((void)); /* have disconnected our link from bundle */ void mp_bundle_terminated __P((void)); char *epdisc_to_str __P((struct epdisc *)); /* string from endpoint discrim. */ int str_to_epdisc __P((struct epdisc *, char *)); /* endpt disc. from str */ #else #define mp_bundle_terminated() /* nothing */ #define mp_exit_bundle() /* nothing */ #define doing_multilink 0 #define multilink_master 0 #endif /* Procedures exported from sys-*.c */ void sys_init __P((void)); /* Do system-dependent initialization */ void sys_cleanup __P((void)); /* Restore system state before exiting */ int sys_check_options __P((void)); /* Check options specified */ void sys_close __P((void)); /* Clean up in a child before execing */ int ppp_available __P((void)); /* Test whether ppp kernel support exists */ int get_pty __P((int *, int *, char *, int)); /* Get pty master/slave */ int open_ppp_loopback __P((void)); /* Open loopback for demand-dialling */ int tty_establish_ppp __P((int)); /* Turn serial port into a ppp interface */ void tty_disestablish_ppp __P((int)); /* Restore port to normal operation */ void generic_disestablish_ppp __P((int dev_fd)); /* Restore device setting */ int generic_establish_ppp __P((int dev_fd)); /* Make a ppp interface */ void make_new_bundle __P((int, int, int, int)); /* Create new bundle */ int bundle_attach __P((int)); /* Attach link to existing bundle */ void cfg_bundle __P((int, int, int, int)); /* Configure existing bundle */ void destroy_bundle __P((void)); /* Tell driver to destroy bundle */ void clean_check __P((void)); /* Check if line was 8-bit clean */ void set_up_tty __P((int, int)); /* Set up port's speed, parameters, etc. */ void restore_tty __P((int)); /* Restore port's original parameters */ void setdtr __P((int, int)); /* Raise or lower port's DTR line */ void output __P((int, u_char *, int)); /* Output a PPP packet */ void wait_input __P((struct timeval *)); /* Wait for input, with timeout */ void add_fd __P((int)); /* Add fd to set to wait for */ void remove_fd __P((int)); /* Remove fd from set to wait for */ int read_packet __P((u_char *)); /* Read PPP packet */ int get_loop_output __P((void)); /* Read pkts from loopback */ void tty_send_config __P((int, u_int32_t, int, int)); /* Configure i/f transmit parameters */ void tty_set_xaccm __P((ext_accm)); /* Set extended transmit ACCM */ void tty_recv_config __P((int, u_int32_t, int, int)); /* Configure i/f receive parameters */ int ccp_test __P((int, u_char *, int, int)); /* Test support for compression scheme */ void ccp_flags_set __P((int, int, int)); /* Set kernel CCP state */ int ccp_fatal_error __P((int)); /* Test for fatal decomp error in kernel */ int get_idle_time __P((int, struct ppp_idle *)); /* Find out how long link has been idle */ int get_ppp_stats __P((int, struct pppd_stats *)); /* Return link statistics */ void netif_set_mtu __P((int, int)); /* Set PPP interface MTU */ int netif_get_mtu __P((int)); /* Get PPP interface MTU */ int sifvjcomp __P((int, int, int, int)); /* Configure VJ TCP header compression */ int sifup __P((int)); /* Configure i/f up for one protocol */ int sifnpmode __P((int u, int proto, enum NPmode mode)); /* Set mode for handling packets for proto */ int sifdown __P((int)); /* Configure i/f down for one protocol */ int sifaddr __P((int, u_int32_t, u_int32_t, u_int32_t)); /* Configure IPv4 addresses for i/f */ int cifaddr __P((int, u_int32_t, u_int32_t)); /* Reset i/f IP addresses */ #ifdef INET6 int sif6addr __P((int, eui64_t, eui64_t)); /* Configure IPv6 addresses for i/f */ int cif6addr __P((int, eui64_t, eui64_t)); /* Remove an IPv6 address from i/f */ #endif #ifndef __linux__ int sifdefaultroute __P((int, u_int32_t, u_int32_t)); #else int sifdefaultroute __P((int, u_int32_t, u_int32_t, bool replace_default_rt)); #endif /* Create default route through i/f */ int cifdefaultroute __P((int, u_int32_t, u_int32_t)); /* Delete default route through i/f */ int sifproxyarp __P((int, u_int32_t)); /* Add proxy ARP entry for peer */ int cifproxyarp __P((int, u_int32_t)); /* Delete proxy ARP entry for peer */ u_int32_t GetMask __P((u_int32_t)); /* Get appropriate netmask for address */ int lock __P((char *)); /* Create lock file for device */ int relock __P((int)); /* Rewrite lock file with new pid */ void unlock __P((void)); /* Delete previously-created lock file */ void logwtmp __P((const char *, const char *, const char *)); /* Write entry to wtmp file */ int get_host_seed __P((void)); /* Get host-dependent random number seed */ int have_route_to __P((u_int32_t)); /* Check if route to addr exists */ #ifdef PPP_FILTER int set_filters __P((struct bpf_program *pass, struct bpf_program *active)); /* Set filter programs in kernel */ #endif #ifdef IPX_CHANGE int sipxfaddr __P((int, unsigned long, unsigned char *)); int cipxfaddr __P((int)); #endif int get_if_hwaddr __P((u_char *addr, char *name)); char *get_first_ethernet __P((void)); /* Procedures exported from options.c */ int setipaddr __P((char *, char **, int)); /* Set local/remote ip addresses */ int parse_args __P((int argc, char **argv)); /* Parse options from arguments given */ int options_from_file __P((char *filename, int must_exist, int check_prot, int privileged)); /* Parse options from an options file */ int options_from_user __P((void)); /* Parse options from user's .ppprc */ int options_for_tty __P((void)); /* Parse options from /etc/ppp/options.tty */ int options_from_list __P((struct wordlist *, int privileged)); /* Parse options from a wordlist */ int getword __P((FILE *f, char *word, int *newlinep, char *filename)); /* Read a word from a file */ void option_error __P((char *fmt, ...)); /* Print an error message about an option */ int int_option __P((char *, int *)); /* Simplified number_option for decimal ints */ void add_options __P((option_t *)); /* Add extra options */ void check_options __P((void)); /* check values after all options parsed */ int override_value __P((const char *, int, const char *)); /* override value if permitted by priority */ void print_options __P((void (*) __P((void *, char *, ...)), void *)); /* print out values of all options */ int parse_dotted_ip __P((char *, u_int32_t *)); /* * Hooks to enable plugins to change various things. */ extern int (*new_phase_hook) __P((int)); 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 int (*allowed_address_hook) __P((u_int32_t addr)); extern void (*ip_up_hook) __P((void)); extern void (*ip_down_hook) __P((void)); extern void (*ip_choose_hook) __P((u_int32_t *)); extern int (*chap_check_hook) __P((void)); extern int (*chap_passwd_hook) __P((char *user, char *passwd)); extern void (*multilink_join_hook) __P((void)); /* Let a plugin snoop sent and received packets. Useful for L2TP */ extern void (*snoop_recv_hook) __P((unsigned char *p, int len)); extern void (*snoop_send_hook) __P((unsigned char *p, int len)); /* * 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); \ } #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), 0) #define UNTIMEOUT(r, f) untimeout((r), (f)) #define BCOPY(s, d, l) memcpy(d, s, l) #define BZERO(s, n) memset(s, 0, n) #define BCMP(s1, s2, l) memcmp(s1, s2, l) #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 #ifdef MAXOCTETS #define EXIT_TRAFFIC_LIMIT 20 #endif #define EXIT_CNID_AUTH_FAILED 21 /* * 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 DEBUGFSM 1 #define DEBUGLCP 1 #define DEBUGIPCP 1 #define DEBUGIPV6CP 1 #define DEBUGUPAP 1 #define DEBUGCHAP 1 #endif #ifndef LOG_PPP /* we use LOG_LOCAL2 for syslog by default */ #if defined(DEBUGMAIN) || defined(DEBUGFSM) || defined(DEBUGSYS) \ || defined(DEBUGLCP) || defined(DEBUGIPCP) || defined(DEBUGUPAP) \ || defined(DEBUGCHAP) || defined(DEBUG) || defined(DEBUGIPV6CP) #define LOG_PPP LOG_LOCAL2 #else #define LOG_PPP LOG_DAEMON #endif #endif /* LOG_PPP */ #ifdef DEBUGMAIN #define MAINDEBUG(x) if (debug) dbglog x #else #define MAINDEBUG(x) #endif #ifdef DEBUGSYS #define SYSDEBUG(x) if (debug) dbglog x #else #define SYSDEBUG(x) #endif #ifdef DEBUGFSM #define FSMDEBUG(x) if (debug) dbglog x #else #define FSMDEBUG(x) #endif #ifdef DEBUGLCP #define LCPDEBUG(x) if (debug) dbglog x #else #define LCPDEBUG(x) #endif #ifdef DEBUGIPCP #define IPCPDEBUG(x) if (debug) dbglog x #else #define IPCPDEBUG(x) #endif #ifdef DEBUGIPV6CP #define IPV6CPDEBUG(x) if (debug) dbglog x #else #define IPV6CPDEBUG(x) #endif #ifdef DEBUGUPAP #define UPAPDEBUG(x) if (debug) dbglog x #else #define UPAPDEBUG(x) #endif #ifdef DEBUGCHAP #define CHAPDEBUG(x) if (debug) dbglog x #else #define CHAPDEBUG(x) #endif #ifdef DEBUGIPXCP #define IPXCPDEBUG(x) if (debug) dbglog x #else #define IPXCPDEBUG(x) #endif #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 #ifndef MAX #define MAX(a, b) ((a) > (b)? (a): (b)) #endif #ifndef offsetof #define offsetof(type, member) ((size_t) &((type *)0)->member) #endif #endif /* __PPP_H__ */