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Diffstat (limited to 'pptpd-1.3.3/plugins/pppd.h')
| -rw-r--r-- | pptpd-1.3.3/plugins/pppd.h | 881 |
1 files changed, 881 insertions, 0 deletions
diff --git a/pptpd-1.3.3/plugins/pppd.h b/pptpd-1.3.3/plugins/pppd.h new file mode 100644 index 00000000..0996128f --- /dev/null +++ b/pptpd-1.3.3/plugins/pppd.h @@ -0,0 +1,881 @@ +/* + * 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. + * + * upstream pppd.h,v 1.82 2003/04/07 00:01:46 paulus Exp + * $Id: pppd.h,v 1.1 2004/04/28 11:36:07 quozl Exp $ + */ + +/* + * TODO: + */ + +#ifndef __PPPD_H__ +#define __PPPD_H__ + +#include <stdio.h> /* for FILE */ +#include <limits.h> /* for NGROUPS_MAX */ +#include <sys/param.h> /* for MAXPATHLEN and BSD4_4, if defined */ +#include <sys/types.h> /* for u_int32_t, if defined */ +#include <sys/time.h> /* for struct timeval */ +#include <net/ppp_defs.h> + +#if defined(__STDC__) +#include <stdarg.h> +#define __V(x) x +#else +#include <varargs.h> +#define __V(x) (va_alist) va_dcl +#define const +#define volatile +#endif + +#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 /* OR in argument to value */ +#define OPT_INC 0x800 /* 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_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 0x10000 /* for o_special, keep list of values */ +#define OPT_A2CLRB 0x10000 /* o_bool, clr val bits in *(u_char *)addr2 */ +#define OPT_NOINCR 0x20000 /* value mustn't be increased */ +#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 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 listen_time; /* time to listen first (ms) */ +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 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 */ + +#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 +#ifdef CHAPMS +#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 +#endif + +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 + +/* + * 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 *)); +pid_t safe_fork __P((void)); /* 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)); + /* Run program prog with args in child */ +void reopen_log __P((void)); /* (re)open the connection to syslog */ +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)); + +/* 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((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 link_terminated __P((int)); /* we are finished with the link */ +void link_down __P((int)); /* the LCP layer has left the Opened state */ +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 */ +void mp_check_options __P((void)); /* Check multilink-related options */ +int mp_join_bundle __P((void)); /* join our link to an appropriate bundle */ +char *epdisc_to_str __P((struct epdisc *)); /* string from endpoint discrim. */ +int str_to_epdisc __P((struct epdisc *, char *)); /* endpt disc. from str */ + +/* 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 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 +int sifdefaultroute __P((int, u_int32_t, u_int32_t)); + /* 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)); + +/* 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__ */ |