X-Git-Url: http://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=pppd%2Fpppd.h;h=2ce8519eb598de514b0b85f82ac55508a1d5898b;hp=c03be99aa26319ef033c783d72122601c7b49efe;hb=a3e53f0632f8b502ca070e048f27c523a668a7dc;hpb=10ae3ff470541d4de8cfb802ae5ba0b6b952a92a diff --git a/pppd/pppd.h b/pppd/pppd.h index c03be99..2ce8519 100644 --- a/pppd/pppd.h +++ b/pppd/pppd.h @@ -16,7 +16,7 @@ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. * - * $Id: pppd.h,v 1.16 1996/09/14 05:17:57 paulus Exp $ + * $Id: pppd.h,v 1.43 1999/08/12 04:22:53 paulus Exp $ */ /* @@ -27,6 +27,7 @@ #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 */ @@ -38,6 +39,8 @@ #else #include #define __V(x) (va_alist) va_dcl +#define const +#define volatile #endif /* @@ -50,6 +53,85 @@ #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, +}; + +typedef struct { + char *name; /* name of the option */ + enum opt_type type; + void *addr; + char *description; + int flags; + void *addr2; + int upper_limit; + int lower_limit; +} option_t; + +/* Values for flags */ +#define OPT_VALUE 0xff /* mask for presupplied value */ +#define OPT_HEX 0x100 /* int option is in hex */ +#define OPT_NOARG 0x200 /* option doesn't take argument */ +#define OPT_OR 0x400 /* OR in argument to value */ +#define OPT_INC 0x800 /* increment value */ +#define OPT_PRIV 0x1000 /* privileged option */ +#define OPT_STATIC 0x2000 /* string option goes into static array */ +#define OPT_LLIMIT 0x4000 /* check value against lower limit */ +#define OPT_ULIMIT 0x8000 /* check value against upper limit */ +#define OPT_LIMITS (OPT_LLIMIT|OPT_ULIMIT) +#define OPT_ZEROOK 0x10000 /* 0 value is OK even if not within limits */ +#define OPT_NOINCR 0x20000 /* value mustn't be increased */ +#define OPT_ZEROINF 0x40000 /* with OPT_NOINCR, 0 == infinity */ +#define OPT_A2INFO 0x100000 /* addr2 -> option_info to update */ +#define OPT_A2COPY 0x200000 /* addr2 -> second location to rcv value */ +#define OPT_ENABLE 0x400000 /* use *addr2 as enable for option */ +#define OPT_PRIVFIX 0x800000 /* can't be overridden if noauth */ +#define OPT_PREPASS 0x1000000 /* do this opt in pre-pass to find device */ +#define OPT_INITONLY 0x2000000 /* option can only be set in init phase */ +#define OPT_DEVEQUIV 0x4000000 /* equiv to device name */ +#define OPT_DEVNAM (OPT_PREPASS | OPT_INITONLY | OPT_DEVEQUIV) + +#define OPT_VAL(x) ((x) & OPT_VALUE) + +#ifndef GIDSET_TYPE +#define GIDSET_TYPE gid_t +#endif + +/* 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; +}; + +/* Used for storing a sequence of words. Usually malloced. */ +struct wordlist { + struct wordlist *next; + char *word; +}; + /* * Global variables. */ @@ -67,6 +149,18 @@ 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 */ +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 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 char *no_ppp_msg; /* message to print if ppp not in kernel */ +extern volatile int status; /* exit status for pppd */ +extern int devnam_fixed; /* can no longer change devnam */ +extern int unsuccess; /* # unsuccessful connection attempts */ /* * Variables set by command-line options. @@ -75,48 +169,65 @@ 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 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 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 *connector; /* Script to establish physical link */ extern char *disconnector; /* 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 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 notty; /* Stdin/out is not a tty */ +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 */ + +#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 + +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 */ /* * 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_TERMINATE 8 +#define PHASE_HOLDOFF 9 /* * The following struct gives the addresses of procedures to call @@ -144,8 +255,10 @@ struct protent { 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 */ @@ -162,31 +275,44 @@ extern struct protent *protocols[]; */ /* 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 timeout __P((void (*func)(), caddr_t arg, int t)); +void timeout __P((void (*func)(void *), void *arg, int t)); /* Call func(arg) after t seconds */ -void untimeout __P((void (*func)(), caddr_t arg)); +void untimeout __P((void (*func)(void *), void *arg)); /* Cancel call to func(arg) */ -int run_program __P((char *prog, char **args, int must_exist)); +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 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 update_link_stats __P((int)); /* Get stats at link termination */ +void script_setenv __P((char *, char *)); /* set script env var */ +void script_unsetenv __P((char *)); /* unset script env var */ + +/* 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++ */ +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) */ /* 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((void)); /* start all the network 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 */ @@ -209,8 +335,6 @@ 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 */ @@ -219,16 +343,17 @@ 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 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 */ +int get_pty __P((int *, int *, char *, int)); /* Get pty master/slave */ +int open_ppp_loopback __P((void)); /* Open loopback for demand-dialling */ +int 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 */ @@ -238,9 +363,8 @@ 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)); @@ -256,6 +380,8 @@ 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 */ int sifvjcomp __P((int, int, int, int)); /* Configure VJ TCP header compression */ int sifup __P((int)); /* Configure i/f up (for IP) */ @@ -266,9 +392,9 @@ 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)); +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 */ @@ -276,26 +402,37 @@ 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 /* 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 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 */ /* * This structure is used to store information about certain @@ -308,11 +445,12 @@ struct option_info { char *source; /* where option came from */ }; -extern struct option_info auth_req_info; +extern struct option_info devnam_info; +extern struct option_info initializer_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 struct option_info ptycommand_info; /* * Inline versions of get/put char/short/long. @@ -353,25 +491,17 @@ 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 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); } +#define PRINTMSG(m, l) { info("Remote message: %0.*v", l, m); } /* * MAKEHEADER - Add Header fields to a packet. @@ -381,7 +511,34 @@ 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 +/* + * 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 @@ -402,49 +559,49 @@ 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 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