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Diffstat (limited to 'c/src/libnetworking/pppd/pppd.h')
| -rw-r--r-- | c/src/libnetworking/pppd/pppd.h | 497 |
1 files changed, 497 insertions, 0 deletions
diff --git a/c/src/libnetworking/pppd/pppd.h b/c/src/libnetworking/pppd/pppd.h new file mode 100644 index 0000000000..7c12e38ae5 --- /dev/null +++ b/c/src/libnetworking/pppd/pppd.h @@ -0,0 +1,497 @@ +/* + * pppd.h - PPP daemon global declarations. + * + * Copyright (c) 1989 Carnegie Mellon University. + * All rights reserved. + * + * Redistribution and use in source and binary forms are permitted + * provided that the above copyright notice and this paragraph are + * duplicated in all such forms and that any documentation, + * advertising materials, and other materials related to such + * distribution and use acknowledge that the software was developed + * by Carnegie Mellon University. The name of the + * University may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * $Id$ + */ + +/* + * TODO: + */ + +#ifndef __PPPD_H__ +#define __PPPD_H__ + +#include <stdio.h> /* for FILE */ +#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 __STDC__ +#include <stdarg.h> +#define __V(x) x +#else +#include <varargs.h> +#define __V(x) (va_alist) va_dcl +#define const +#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 */ + +/* + * Global variables. + */ + +extern int hungup; /* Physical layer has disconnected */ +extern int interfunit; /* 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 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 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 */ + +/* + * 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[]; /* Device name */ +extern int crtscts; /* Use hardware flow control */ +extern int 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 char *welcomer[]; /* Script to welcome client after connection */ +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 explicit_remote;/* remote_name specified with remotename opt */ +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 *ipparam; /* Extra parameter for ip up/down scripts */ +extern int 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 */ +#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 int ms_lanman; /* Nonzero if use LanMan password instead of NT */ + /* Has meaning only with MS-CHAP challenges */ +#endif + +/* + * 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_CALLBACK 5 +#define PHASE_NETWORK 6 +#define PHASE_TERMINATE 7 +#define PHASE_HOLDOFF 8 + +/* + * 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)); + int enabled_flag; /* 0 iff protocol is disabled */ + char *name; /* Text name of protocol */ + /* 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[]; + +/* + * Prototypes. + */ + +/* Procedures exported from main.c. */ +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 my_timeout __P((void (*func)(void *), void *arg, int t)); + /* Call func(arg) after t 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)); + /* 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 *, 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 script_setenv __P((char *, char *)); /* set script env var */ +void script_unsetenv __P((char *)); /* unset script env var */ +/* My procedures */ +int connect_stb(); +int disconnect_stb(); +int pppdmain(int, char*[]); +int chatmain(char*); + +/* 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 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)); + /* peer successfully authenticated itself */ +void auth_withpeer_fail __P((int, int)); + /* we failed to authenticate ourselves */ +void auth_withpeer_success __P((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 *)); + /* Check peer-supplied username/password */ +int get_secret __P((int, char *, char *, char *, int *, int)); + /* get "secret" for chap */ +int auth_ip_addr __P((int, u_int32_t)); + /* check if IP address 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 */ +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)); /* process frame from loopback */ + +/* 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 */ +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 */ +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 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 */ +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)); + /* Configure i/f transmit parameters */ +void ppp_set_xaccm __P((int, ext_accm)); + /* Set extended transmit ACCM */ +void ppp_recv_config __P((int, 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 sifvjcomp __P((int, int, int, int)); + /* Configure VJ TCP header compression */ +int sifup __P((int)); /* Configure i/f up (for IP) */ +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 sifaddr __P((int, u_int32_t, u_int32_t, u_int32_t)); + /* Configure IP 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, 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 */ +void unlock __P((void)); /* Delete previously-created lock file */ +int daemon __P((int, int)); /* Detach us from terminal session */ +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 */ +#ifdef PPP_FILTER +int set_filters __P((struct bpf_program *pass, struct bpf_program *active)); + /* Set filter programs in kernel */ +#endif + +/* Procedures exported from options.c */ +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 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 */ + +/* + * This structure is used to store information about certain + * options, such as where the option value came from (/etc/ppp/options, + * command line, etc.) and whether it came from a privileged source. + */ + +struct option_info { + 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; + +/* + * 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)) + +#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) my_timeout((r), (f), (t)) +#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 PRINTMSG(m, l) { m[l] = '\0'; syslog(LOG_INFO, "Remote message: %s", m); } + +/* + * MAKEHEADER - Add Header fields to a packet. + */ +#define MAKEHEADER(p, t) { \ + PUTCHAR(PPP_ALLSTATIONS, p); \ + PUTCHAR(PPP_UI, p); \ + PUTSHORT(t, p); } + +/* #define DEBUGALL */ + +#ifdef DEBUGALL +#define DEBUGMAIN 1 +#define DEBUGFSM 1 +#define DEBUGLCP 1 +#define DEBUGIPCP 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) +#define LOG_PPP LOG_LOCAL2 +#else +#define LOG_PPP LOG_DAEMON +#endif +#endif /* LOG_PPP */ +extern rtems_id pppdaemon_tid; +#ifdef DEBUGMAIN +#define MAINDEBUG(x) if (debug) syslog x +#else +#define MAINDEBUG(x) +#endif + +#ifdef DEBUGSYS +#define SYSDEBUG(x) if (debug) syslog x +#else +#define SYSDEBUG(x) +#endif + +#ifdef DEBUGFSM +#define FSMDEBUG(x) if (debug) syslog x +#else +#define FSMDEBUG(x) +#endif + +#ifdef DEBUGLCP +#define LCPDEBUG(x) if (debug) syslog x +#else +#define LCPDEBUG(x) +#endif + +#ifdef DEBUGIPCP +#define IPCPDEBUG(x) if (debug) syslog x +#else +#define IPCPDEBUG(x) +#endif + +#ifdef DEBUGUPAP +#define UPAPDEBUG(x) if (debug) syslog x +#else +#define UPAPDEBUG(x) +#endif + +#ifdef DEBUGCHAP +#define CHAPDEBUG(x) if (debug) syslog x +#else +#define CHAPDEBUG(x) +#endif + +#ifdef DEBUGIPXCP +#define IPXCPDEBUG(x) if (debug) syslog 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 + +#endif /* __PPP_H__ */ |