X-Git-Url: http://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=pppd%2Fpppd.h;h=6e3743fd9c97de74caf9638e717aa60525bebabb;hp=c03be99aa26319ef033c783d72122601c7b49efe;hb=d34159f417620eb7c481bf53f29fe04c86ccd223;hpb=10ae3ff470541d4de8cfb802ae5ba0b6b952a92a diff --git a/pppd/pppd.h b/pppd/pppd.h index c03be99..6e3743f 100644 --- a/pppd/pppd.h +++ b/pppd/pppd.h @@ -1,22 +1,45 @@ /* * pppd.h - PPP daemon global declarations. * - * Copyright (c) 1989 Carnegie Mellon University. - * All rights reserved. + * Copyright (c) 1984-2000 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. + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: * - * $Id: pppd.h,v 1.16 1996/09/14 05:17:57 paulus Exp $ + * 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 $ */ /* @@ -27,17 +50,25 @@ #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 __STDC__ +#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 /* @@ -49,6 +80,142 @@ #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 */ +#define MAXIFNAMELEN 32 /* max length of interface name; or use IFNAMSIZ, can we + always include net/if.h? */ + +/* + * If PPP_DRV_NAME is not defined, use the default "ppp" as the device name. + * Where should PPP_DRV_NAME come from? Do we include it here? + */ +#if !defined(PPP_DRV_NAME) +#define PPP_DRV_NAME "ppp" +#endif /* !defined(PPP_DRV_NAME) */ + +/* + * 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 printer_func to print 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)); +typedef void (*printer_func) __P((void *, char *, ...)); + +struct notifier { + struct notifier *next; + notify_func func; + void *arg; +}; /* * Global variables. @@ -57,16 +224,61 @@ extern int hungup; /* Physical layer has disconnected */ extern int ifunit; /* Interface unit number */ extern char ifname[]; /* 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 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 *ipv6_up_notifier; /* IPV6CP has come up */ +extern struct notifier *ipv6_down_notifier; /* IPV6CP 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. @@ -75,48 +287,122 @@ extern int need_holdoff; /* Need holdoff period after link terminates */ 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[]; /* Device name */ +extern char devnam[MAXPATHLEN]; /* Device name */ extern int crtscts; /* Use hardware flow control */ -extern int modem; /* Use modem control lines */ +extern int stop_bits; /* Number of serial port stop bits */ +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 int lockflag; /* Create lock file to lock the serial dev */ -extern int nodetach; /* Don't detach from controlling tty */ -extern char *connector; /* Script to establish physical link */ -extern char *disconnector; /* Script to disestablish physical link */ +extern bool lockflag; /* Create lock file to lock the serial dev */ +extern bool nodetach; /* Don't detach from controlling tty */ +#ifdef SYSTEMD +extern bool up_sdnotify; /* Notify systemd once link is up (implies nodetach) */ +#endif +extern bool updetach; /* Detach from controlling tty when link up */ +extern bool master_detach; /* Detach when multilink master without link */ +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[]; /* Our name for authenticating ourselves */ -extern char passwd[]; /* Password for PAP */ -extern int auth_required; /* Peer is required to authenticate */ -extern int proxyarp; /* Set up proxy ARP entry for peer */ -extern int persist; /* Reopen link after it goes down */ -extern int uselogin; /* Use /etc/passwd for checking PAP */ -extern int lcp_echo_interval; /* Interval between LCP echo-requests */ -extern int lcp_echo_fails; /* Tolerance to unanswered echo-requests */ -extern char our_name[]; /* Our name for authentication purposes */ -extern char remote_name[]; /* Peer's name for authentication */ -extern int usehostname; /* Use hostname for our_name */ -extern int disable_defaultip; /* Don't use hostname for default IP adrs */ -extern int demand; /* Do dial-on-demand */ +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 int cryptpap; /* Others' PAP passwords are encrypted */ +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 int refuse_pap; /* Don't wanna auth. ourselves with PAP */ -extern int refuse_chap; /* Don't wanna auth. ourselves with CHAP */ +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 char req_ifname[MAXIFNAMELEN]; /* interface name 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_DORMANT 2 -#define PHASE_ESTABLISH 3 -#define PHASE_AUTHENTICATE 4 -#define PHASE_NETWORK 5 -#define PHASE_TERMINATE 6 -#define PHASE_HOLDOFF 7 +#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 @@ -139,13 +425,14 @@ struct protent { /* 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 *, ...)), + int (*printpkt) __P((u_char *pkt, int len, printer_func printer, void *arg)); /* Process a received data packet */ void (*datainput) __P((int unit, u_char *pkt, int len)); - int enabled_flag; /* 0 iff protocol is disabled */ + 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 */ @@ -157,60 +444,153 @@ struct protent { /* 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; + +/* + * This structure contains environment variables that are set or unset + * by the user. + */ +struct userenv { + struct userenv *ue_next; + char *ue_value; /* value (set only) */ + bool ue_isset; /* 1 for set, 0 for unset */ + bool ue_priv; /* from privileged source */ + const char *ue_source; /* source name */ + char ue_name[1]; /* variable name */ +}; + +extern struct userenv *userenv_list; + /* * 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)(), caddr_t arg, int t)); - /* Call func(arg) after t seconds */ -void untimeout __P((void (*func)(), caddr_t arg)); +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) */ -int run_program __P((char *prog, char **args, int must_exist)); +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 demuxprotrej __P((int, int)); - /* Demultiplex a Protocol-Reject */ -void format_packet __P((u_char *, int, void (*) (void *, char *, ...), - void *)); /* Format a packet in human-readable form */ -void log_packet __P((u_char *, int, char *)); +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 fmtmsg __P((char *, int, char *, ...)); /* sprintf++ */ -int vfmtmsg __P((char *, int, char *, va_list)); /* vsprintf++ */ +void print_string __P((char *, int, printer_func, 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, char *, int)); +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)); +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 **, int *)); +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 */ -void check_access __P((FILE *, char *)); - /* check permissions on secrets file */ /* Procedures exported from demand.c */ void demand_conf __P((void)); /* config interface(s) for demand-dial */ @@ -219,18 +599,39 @@ 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)); /* process frame 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 */ -void sys_check_options __P((void)); /* Check options specified */ +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 */ -void open_ppp_loopback __P((void)); /* Open loopback for demand-dialling */ -void establish_ppp __P((int)); /* Turn serial port into a ppp interface */ -void restore_loop __P((void)); /* Transfer ppp unit back to loopback */ -void disestablish_ppp __P((int)); /* Restore port to normal operation */ +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 */ @@ -238,16 +639,15 @@ 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 wait_loop_output __P((struct timeval *)); - /* Wait for pkt from loopback, with timeout */ -void wait_time __P((struct timeval *)); /* Wait for given length of time */ +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 ppp_send_config __P((int, int, u_int32_t, int, int)); +void tty_send_config __P((int, u_int32_t, int, int)); /* Configure i/f transmit parameters */ -void ppp_set_xaccm __P((int, ext_accm)); +void tty_set_xaccm __P((ext_accm)); /* Set extended transmit ACCM */ -void ppp_recv_config __P((int, int, u_int32_t, int, int)); +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 */ @@ -256,19 +656,32 @@ void ccp_flags_set __P((int, int, int)); 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 IP) */ +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 IP) */ +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 IP addresses for i/f */ + /* Configure IPv4 addresses for i/f */ int cifaddr __P((int, u_int32_t, u_int32_t)); /* Reset i/f IP addresses */ -int sifdefaultroute __P((int, u_int32_t)); +#ifdef INET6 +int ether_to_eui64(eui64_t *p_eui64); /* convert eth0 hw address to EUI64 */ +int sif6up __P((int)); /* Configure i/f up for IPv6 */ +int sif6down __P((int)); /* Configure i/f down for IPv6 */ +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 +int sifdefaultroute __P((int, u_int32_t, u_int32_t)); /* Create default route through i/f */ -int cifdefaultroute __P((int, u_int32_t)); +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 */ @@ -276,43 +689,75 @@ 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 */ -int daemon __P((int, int)); /* Detach us from terminal session */ -int logwtmp __P((char *, char *, char *)); +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 */ -void usage __P((void)); /* Print a usage message */ 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 */ -void scan_args __P((int argc, char **argv)); - /* Look for tty name in command-line args */ +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((printer_func, void *)); + /* print out values of all options */ + +int parse_dotted_ip __P((char *, u_int32_t *)); /* - * 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. + * Hooks to enable plugins to change various things. */ - -struct option_info { - int priv; /* was value set by sysadmin? */ - char *source; /* where option came from */ -}; - -extern struct option_info auth_req_info; -extern struct option_info connector_info; -extern struct option_info disconnector_info; -extern struct option_info welcomer_info; -extern struct option_info devnam_info; +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 void (*ipv6_up_hook) __P((void)); +extern void (*ipv6_down_hook) __P((void)); + +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. @@ -353,25 +798,18 @@ extern struct option_info devnam_info; #define INCPTR(n, cp) ((cp) += (n)) #define DECPTR(n, cp) ((cp) -= (n)) -#undef FALSE -#define FALSE 0 -#undef TRUE -#define TRUE 1 - /* * System dependent definitions for user-level 4.3BSD UNIX implementation. */ -#define DEMUXPROTREJ(u, p) demuxprotrej(u, p) - -#define TIMEOUT(r, f, t) timeout((r), (f), (t)) +#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 EXIT(u) quit() +#define BCMP(s1, s2, l) memcmp(s1, s2, l) -#define PRINTMSG(m, l) { m[l] = '\0'; syslog(LOG_INFO, "Remote message: %s", m); } +#define PRINTMSG(m, l) { info("Remote message: %0.*v", l, m); } /* * MAKEHEADER - Add Header fields to a packet. @@ -381,12 +819,44 @@ extern struct option_info devnam_info; 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 @@ -394,7 +864,7 @@ extern struct option_info devnam_info; #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(DEBUGCHAP) || defined(DEBUG) || defined(DEBUGIPV6CP) #define LOG_PPP LOG_LOCAL2 #else #define LOG_PPP LOG_DAEMON @@ -402,49 +872,55 @@ extern struct option_info devnam_info; #endif /* LOG_PPP */ #ifdef DEBUGMAIN -#define MAINDEBUG(x) if (debug) syslog x +#define MAINDEBUG(x) if (debug) dbglog x #else #define MAINDEBUG(x) #endif #ifdef DEBUGSYS -#define SYSDEBUG(x) if (debug) syslog x +#define SYSDEBUG(x) if (debug) dbglog x #else #define SYSDEBUG(x) #endif #ifdef DEBUGFSM -#define FSMDEBUG(x) if (debug) syslog x +#define FSMDEBUG(x) if (debug) dbglog x #else #define FSMDEBUG(x) #endif #ifdef DEBUGLCP -#define LCPDEBUG(x) if (debug) syslog x +#define LCPDEBUG(x) if (debug) dbglog x #else #define LCPDEBUG(x) #endif #ifdef DEBUGIPCP -#define IPCPDEBUG(x) if (debug) syslog x +#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) syslog x +#define UPAPDEBUG(x) if (debug) dbglog x #else #define UPAPDEBUG(x) #endif #ifdef DEBUGCHAP -#define CHAPDEBUG(x) if (debug) syslog x +#define CHAPDEBUG(x) if (debug) dbglog x #else #define CHAPDEBUG(x) #endif #ifdef DEBUGIPXCP -#define IPXCPDEBUG(x) if (debug) syslog x +#define IPXCPDEBUG(x) if (debug) dbglog x #else #define IPXCPDEBUG(x) #endif @@ -464,4 +940,8 @@ extern struct option_info devnam_info; #define MAX(a, b) ((a) > (b)? (a): (b)) #endif +#ifndef offsetof +#define offsetof(type, member) ((size_t) &((type *)0)->member) +#endif + #endif /* __PPP_H__ */