1561 lines
32 KiB
C
1561 lines
32 KiB
C
/*
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* xntpdc - control and monitor your xntpd daemon
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include <signal.h>
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#include <setjmp.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <netdb.h>
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#include <histedit.h>
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#include "ntpdc.h"
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#include "ntp_select.h"
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#include "ntp_io.h"
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#include "ntp_stdlib.h"
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/*
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* Because we now potentially understand a lot of commands (and
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* it requires a lot of commands to talk to xntpd) we will run
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* interactive if connected to a terminal.
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*/
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static int interactive = 0; /* set to 1 when we should prompt */
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static char * prompt = "xntpdc> "; /* prompt to ask him about */
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/*
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* Keyid used for authenticated requests. Obtained on the fly.
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*/
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static u_long info_auth_keyid;
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/*
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* Type of key md5 or des
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*/
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#define KEY_TYPE_DES 3
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#define KEY_TYPE_MD5 4
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static int info_auth_keytype = KEY_TYPE_DES; /* DES */
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/*
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* Built in command handler declarations
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*/
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static int openhost P((char *));
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static int sendpkt P((char *, int));
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static void growpktdata P((void));
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static int getresponse P((int, int, int *, int *, char **));
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static int sendrequest P((int, int, int, int, int, char *));
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static void getcmds P((void));
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static RETSIGTYPE abortcmd P((int));
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static void docmd P((char *));
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static void tokenize P((char *, char **, int *));
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static int findcmd P((char *, struct xcmd *, struct xcmd *, struct xcmd **));
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static int getarg P((char *, int, arg_v *));
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static int getnetnum P((char *, u_long *, char *));
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static void help P((struct parse *, FILE *));
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#if defined(sgi) || defined(SYS_BSDI) || defined(__STDC__)
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static int helpsort P((const void *, const void *));
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#else
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static int helpsort P((char **, char **));
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#endif /* sgi */
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static void printusage P((struct xcmd *, FILE *));
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static void timeout P((struct parse *, FILE *));
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static void delay P((struct parse *, FILE *));
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static void host P((struct parse *, FILE *));
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static void keyid P((struct parse *, FILE *));
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static void keytype P((struct parse *, FILE *));
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static void passwd P((struct parse *, FILE *));
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static void hostnames P((struct parse *, FILE *));
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static void setdebug P((struct parse *, FILE *));
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static void quit P((struct parse *, FILE *));
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static void version P((struct parse *, FILE *));
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static void warning P((char *, char *, char *));
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static void error P((char *, char *, char *));
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static u_long getkeyid P((char *));
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/*
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* Built-in commands we understand
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*/
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static struct xcmd builtins[] = {
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{ "?", help, { OPT|NTP_STR, NO, NO, NO },
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{ "command", "", "", "" },
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"tell the use and syntax of commands" },
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{ "help", help, { OPT|NTP_STR, NO, NO, NO },
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{ "command", "", "", "" },
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"tell the use and syntax of commands" },
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{ "timeout", timeout, { OPT|UINT, NO, NO, NO },
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{ "msec", "", "", "" },
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"set the primary receive time out" },
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{ "delay", delay, { OPT|INT, NO, NO, NO },
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{ "msec", "", "", "" },
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"set the delay added to encryption time stamps" },
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{ "host", host, { OPT|NTP_STR, NO, NO, NO },
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{ "hostname", "", "", "" },
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"specify the host whose NTP server we talk to" },
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{ "passwd", passwd, { OPT|NTP_STR, NO, NO, NO },
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{ "", "", "", "" },
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"specify a password to use for authenticated requests"},
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{ "hostnames", hostnames, { OPT|NTP_STR, NO, NO, NO },
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{ "yes|no", "", "", "" },
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"specify whether hostnames or net numbers are printed"},
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{ "debug", setdebug, { OPT|NTP_STR, NO, NO, NO },
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{ "no|more|less", "", "", "" },
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"set/change debugging level" },
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{ "quit", quit, { NO, NO, NO, NO },
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{ "", "", "", "" },
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"exit xntpdc" },
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{ "keyid", keyid, { OPT|UINT, NO, NO, NO },
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{ "key#", "", "", "" },
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"set keyid to use for authenticated requests" },
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{ "keytype", keytype, { NTP_STR, NO, NO, NO },
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{ "key type (md5|des)", "", "", "" },
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"set key type to use for authenticated requests (des|md5)" },
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{ "version", version, { NO, NO, NO, NO },
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{ "", "", "", "" },
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"print version number" },
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{ 0, 0, { NO, NO, NO, NO },
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{ "", "", "", "" }, "" }
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};
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/*
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* Default values we use.
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*/
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#define DEFTIMEOUT (5) /* 5 second time out */
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#define DEFSTIMEOUT (2) /* 2 second time out after first */
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#define DEFDELAY 0x51EB852 /* 20 milliseconds, l_fp fraction */
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#define DEFHOST "localhost" /* default host name */
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#define LENHOSTNAME 256 /* host name is 256 characters long */
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#define MAXCMDS 100 /* maximum commands on cmd line */
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#define MAXHOSTS 100 /* maximum hosts on cmd line */
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#define MAXLINE 512 /* maximum line length */
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#define MAXTOKENS (1+MAXARGS+2) /* maximum number of usable tokens */
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/*
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* Some variables used and manipulated locally
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*/
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static struct timeval tvout = { DEFTIMEOUT, 0 }; /* time out for reads */
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static struct timeval tvsout = { DEFSTIMEOUT, 0 }; /* secondary time out */
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static l_fp delay_time; /* delay time */
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static char currenthost[LENHOSTNAME]; /* current host name */
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static struct sockaddr_in hostaddr = { 0 }; /* host address */
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static int showhostnames = 1; /* show host names by default */
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static int sockfd; /* fd socket is openned on */
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static int havehost = 0; /* set to 1 when host open */
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struct servent *server_entry = NULL; /* server entry for ntp */
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/*
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* Holds data returned from queries. We allocate INITDATASIZE
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* octets to begin with, increasing this as we need to.
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*/
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#define INITDATASIZE (sizeof(struct resp_pkt) * 16)
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#define INCDATASIZE (sizeof(struct resp_pkt) * 8)
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static char *pktdata;
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static int pktdatasize;
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/*
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* For commands typed on the command line (with the -c option)
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*/
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static int numcmds = 0;
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static char *ccmds[MAXCMDS];
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#define ADDCMD(cp) if (numcmds < MAXCMDS) ccmds[numcmds++] = (cp)
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/*
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* When multiple hosts are specified.
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*/
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static int numhosts = 0;
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static char *chosts[MAXHOSTS];
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#define ADDHOST(cp) if (numhosts < MAXHOSTS) chosts[numhosts++] = (cp)
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/*
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* Error codes for internal use
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*/
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#define ERR_INCOMPLETE 16
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#define ERR_TIMEOUT 17
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/*
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* Macro definitions we use
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*/
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#define ISSPACE(c) ((c) == ' ' || (c) == '\t')
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#define ISEOL(c) ((c) == '\n' || (c) == '\r' || (c) == '\0')
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#define STREQ(a, b) (*(a) == *(b) && strcmp((a), (b)) == 0)
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/*
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* For converting time stamps to dates
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*/
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#define JAN_1970 2208988800 /* 1970 - 1900 in seconds */
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/*
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* Jump buffer for longjumping back to the command level
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*/
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static jmp_buf interrupt_buf;
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static int jump = 0;
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/*
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* Pointer to current output unit
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*/
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static FILE *current_output;
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/*
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* Command table imported from ntpdc_ops.c
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*/
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extern struct xcmd opcmds[];
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char *progname;
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int debug;
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/*
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* main - parse arguments and handle options
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*/
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int c;
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int errflg = 0;
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extern int ntp_optind;
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extern char *ntp_optarg;
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delay_time.l_ui = 0;
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delay_time.l_uf = DEFDELAY;
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progname = argv[0];
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while ((c = ntp_getopt(argc, argv, "c:dilnps")) != EOF)
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switch (c) {
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case 'c':
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ADDCMD(ntp_optarg);
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break;
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case 'd':
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++debug;
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break;
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case 'i':
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interactive = 1;
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break;
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case 'l':
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ADDCMD("listpeers");
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break;
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case 'n':
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showhostnames = 0;
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break;
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case 'p':
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ADDCMD("peers");
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break;
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case 's':
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ADDCMD("dmpeers");
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break;
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default:
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errflg++;
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break;
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}
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if (errflg) {
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(void) fprintf(stderr,
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"usage: %s [-dilnps] [-c cmd] host ...\n",
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progname);
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exit(2);
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}
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if (ntp_optind == argc) {
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ADDHOST(DEFHOST);
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} else {
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for (; ntp_optind < argc; ntp_optind++)
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ADDHOST(argv[ntp_optind]);
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}
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if (numcmds == 0 && interactive == 0
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&& isatty(fileno(stdin)) && isatty(fileno(stderr))) {
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interactive = 1;
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}
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if (interactive)
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(void) signal_no_reset(SIGINT, abortcmd);
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/*
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* Initialize the packet data buffer
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*/
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pktdata = (char *)malloc(INITDATASIZE);
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if (pktdata == NULL) {
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(void) fprintf(stderr, "%s: malloc() failed!\n", progname);
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exit(1);
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}
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pktdatasize = INITDATASIZE;
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if (numcmds == 0) {
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(void) openhost(chosts[0]);
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getcmds();
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} else {
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int ihost;
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int icmd;
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for (ihost = 0; ihost < numhosts; ihost++) {
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if (openhost(chosts[ihost]))
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for (icmd = 0; icmd < numcmds; icmd++) {
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if (numhosts > 1)
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printf ("--- %s ---\n",chosts[ihost]);
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docmd(ccmds[icmd]);
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}
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}
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}
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exit(0);
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}
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/*
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* openhost - open a socket to a host
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*/
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static int
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openhost(hname)
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char *hname;
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{
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u_long netnum;
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char temphost[LENHOSTNAME];
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|
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if (server_entry == NULL) {
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server_entry = getservbyname("ntp", "udp");
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if (server_entry == NULL) {
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(void) fprintf(stderr, "%s: ntp/udp: unknown service\n",
|
|
progname);
|
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exit(1);
|
|
}
|
|
if (debug > 2)
|
|
printf("Got ntp/udp service entry\n");
|
|
}
|
|
|
|
if (!getnetnum(hname, &netnum, temphost))
|
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return 0;
|
|
|
|
if (debug > 2)
|
|
printf("Opening host %s\n", temphost);
|
|
|
|
if (havehost == 1) {
|
|
if (debug > 2)
|
|
printf("Closing old host %s\n", currenthost);
|
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(void) close(sockfd);
|
|
havehost = 0;
|
|
}
|
|
(void) strcpy(currenthost, temphost);
|
|
|
|
hostaddr.sin_family = AF_INET;
|
|
hostaddr.sin_port = server_entry->s_port;
|
|
hostaddr.sin_addr.s_addr = netnum;
|
|
|
|
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
|
|
if (sockfd == -1)
|
|
error("socket", "", "");
|
|
|
|
#if defined(SYS_HPUX) && (SYS_HPUX < 8)
|
|
#ifdef SO_RCVBUF
|
|
{ int rbufsize = INITDATASIZE + 2048; /* 2K for slop */
|
|
if (setsockopt(sockfd, SOL_SOCKET, SO_RCVBUF,
|
|
&rbufsize, sizeof(int)) == -1)
|
|
error("setsockopt", "", "");
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
if (connect(sockfd, (struct sockaddr *)&hostaddr,
|
|
sizeof(hostaddr)) == -1)
|
|
error("connect", "", "");
|
|
|
|
havehost = 1;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/* XXX ELIMINATE sendpkt similar in ntpq.c, ntpdc.c, ntp_io.c, ntptrace.c */
|
|
/*
|
|
* sendpkt - send a packet to the remote host
|
|
*/
|
|
static int
|
|
sendpkt(xdata, xdatalen)
|
|
char *xdata;
|
|
int xdatalen;
|
|
{
|
|
if (write(sockfd, xdata, xdatalen) == -1) {
|
|
warning("write to %s failed", currenthost, "");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* growpktdata - grow the packet data area
|
|
*/
|
|
static void
|
|
growpktdata()
|
|
{
|
|
pktdatasize += INCDATASIZE;
|
|
pktdata = (char *)realloc(pktdata, pktdatasize);
|
|
if (pktdata == 0) {
|
|
(void) fprintf(stderr, "%s: realloc() failed!\n", progname);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* getresponse - get a (series of) response packet(s) and return the data
|
|
*/
|
|
static int
|
|
getresponse(implcode, reqcode, ritems, rsize, rdata)
|
|
int implcode;
|
|
int reqcode;
|
|
int *ritems;
|
|
int *rsize;
|
|
char **rdata;
|
|
{
|
|
struct resp_pkt rpkt;
|
|
struct timeval tvo;
|
|
int items;
|
|
int size;
|
|
int datasize;
|
|
char *datap;
|
|
char haveseq[MAXSEQ+1];
|
|
int firstpkt;
|
|
int lastseq;
|
|
int numrecv;
|
|
int seq;
|
|
fd_set fds;
|
|
int n;
|
|
|
|
/*
|
|
* This is pretty tricky. We may get between 1 and many packets
|
|
* back in response to the request. We peel the data out of
|
|
* each packet and collect it in one long block. When the last
|
|
* packet in the sequence is received we'll know how many we
|
|
* should have had. Note we use one long time out, should reconsider.
|
|
*/
|
|
*ritems = 0;
|
|
*rsize = 0;
|
|
firstpkt = 1;
|
|
numrecv = 0;
|
|
*rdata = datap = pktdata;
|
|
lastseq = 999; /* too big to be a sequence number */
|
|
memset(haveseq, 0, sizeof(haveseq));
|
|
FD_ZERO(&fds);
|
|
|
|
again:
|
|
if (firstpkt)
|
|
tvo = tvout;
|
|
else
|
|
tvo = tvsout;
|
|
|
|
FD_SET(sockfd, &fds);
|
|
n = select(sockfd+1, &fds, (fd_set *)0, (fd_set *)0, &tvo);
|
|
|
|
if (n == -1) {
|
|
warning("select fails", "", "");
|
|
return -1;
|
|
}
|
|
if (n == 0) {
|
|
/*
|
|
* Timed out. Return what we have
|
|
*/
|
|
if (firstpkt) {
|
|
(void) fprintf(stderr,
|
|
"%s: timed out, nothing received\n", currenthost);
|
|
return ERR_TIMEOUT;
|
|
} else {
|
|
(void) fprintf(stderr,
|
|
"%s: timed out with incomplete data\n",
|
|
currenthost);
|
|
if (debug) {
|
|
printf("Received sequence numbers");
|
|
for (n = 0; n <= MAXSEQ; n++)
|
|
if (haveseq[n])
|
|
printf(" %d,", n);
|
|
if (lastseq != 999)
|
|
printf(" last frame received\n");
|
|
else
|
|
printf(" last frame not received\n");
|
|
}
|
|
return ERR_INCOMPLETE;
|
|
}
|
|
}
|
|
|
|
n = read(sockfd, (char *)&rpkt, sizeof(rpkt));
|
|
if (n == -1) {
|
|
warning("read", "", "");
|
|
return -1;
|
|
}
|
|
|
|
|
|
/*
|
|
* Check for format errors. Bug proofing.
|
|
*/
|
|
if (n < RESP_HEADER_SIZE) {
|
|
if (debug)
|
|
printf("Short (%d byte) packet received\n", n);
|
|
goto again;
|
|
}
|
|
if (INFO_VERSION(rpkt.rm_vn_mode) != NTP_VERSION) {
|
|
if (debug)
|
|
printf("Packet received with version %d\n",
|
|
INFO_VERSION(rpkt.rm_vn_mode));
|
|
goto again;
|
|
}
|
|
if (INFO_MODE(rpkt.rm_vn_mode) != MODE_PRIVATE) {
|
|
if (debug)
|
|
printf("Packet received with mode %d\n",
|
|
INFO_MODE(rpkt.rm_vn_mode));
|
|
goto again;
|
|
}
|
|
if (INFO_IS_AUTH(rpkt.auth_seq)) {
|
|
if (debug)
|
|
printf("Encrypted packet received\n");
|
|
goto again;
|
|
}
|
|
if (!ISRESPONSE(rpkt.rm_vn_mode)) {
|
|
if (debug)
|
|
printf("Received request packet, wanted response\n");
|
|
goto again;
|
|
}
|
|
if (INFO_MBZ(rpkt.mbz_itemsize) != 0) {
|
|
if (debug)
|
|
printf("Received packet with nonzero MBZ field!\n");
|
|
goto again;
|
|
}
|
|
|
|
/*
|
|
* Check implementation/request. Could be old data getting to us.
|
|
*/
|
|
if (rpkt.implementation != implcode || rpkt.request != reqcode) {
|
|
if (debug)
|
|
printf(
|
|
"Received implementation/request of %d/%d, wanted %d/%d",
|
|
rpkt.implementation, rpkt.request,
|
|
implcode, reqcode);
|
|
goto again;
|
|
}
|
|
|
|
/*
|
|
* Check the error code. If non-zero, return it.
|
|
*/
|
|
if (INFO_ERR(rpkt.err_nitems) != INFO_OKAY) {
|
|
if (debug && ISMORE(rpkt.rm_vn_mode)) {
|
|
printf("Error code %d received on not-final packet\n",
|
|
INFO_ERR(rpkt.err_nitems));
|
|
}
|
|
return (int)INFO_ERR(rpkt.err_nitems);
|
|
}
|
|
|
|
|
|
/*
|
|
* Collect items and size. Make sure they make sense.
|
|
*/
|
|
items = INFO_NITEMS(rpkt.err_nitems);
|
|
size = INFO_ITEMSIZE(rpkt.mbz_itemsize);
|
|
|
|
if ((datasize = items*size) > (n-RESP_HEADER_SIZE)) {
|
|
if (debug)
|
|
printf(
|
|
"Received items %d, size %d (total %d), data in packet is %d\n",
|
|
items, size, datasize, n-RESP_HEADER_SIZE);
|
|
goto again;
|
|
}
|
|
|
|
/*
|
|
* If this isn't our first packet, make sure the size matches
|
|
* the other ones.
|
|
*/
|
|
if (!firstpkt && size != *rsize) {
|
|
if (debug)
|
|
printf("Received itemsize %d, previous %d\n",
|
|
size, *rsize);
|
|
goto again;
|
|
}
|
|
|
|
/*
|
|
* If we've received this before, toss it
|
|
*/
|
|
seq = INFO_SEQ(rpkt.auth_seq);
|
|
if (haveseq[seq]) {
|
|
if (debug)
|
|
printf("Received duplicate sequence number %d\n", seq);
|
|
goto again;
|
|
}
|
|
haveseq[seq] = 1;
|
|
|
|
/*
|
|
* If this is the last in the sequence, record that.
|
|
*/
|
|
if (!ISMORE(rpkt.rm_vn_mode)) {
|
|
if (lastseq != 999) {
|
|
printf("Received second end sequence packet\n");
|
|
goto again;
|
|
}
|
|
lastseq = seq;
|
|
}
|
|
|
|
/*
|
|
* So far, so good. Copy this data into the output array.
|
|
*/
|
|
if ((datap + datasize) > (pktdata + pktdatasize)) {
|
|
int offset = datap - pktdata;
|
|
growpktdata();
|
|
*rdata = pktdata; /* might have been realloced ! */
|
|
datap = pktdata + offset;
|
|
}
|
|
memmove(datap, (char *)rpkt.data, datasize);
|
|
datap += datasize;
|
|
if (firstpkt) {
|
|
firstpkt = 0;
|
|
*rsize = size;
|
|
}
|
|
*ritems += items;
|
|
|
|
/*
|
|
* Finally, check the count of received packets. If we've got them
|
|
* all, return
|
|
*/
|
|
++numrecv;
|
|
if (numrecv <= lastseq)
|
|
goto again;
|
|
return INFO_OKAY;
|
|
}
|
|
|
|
|
|
/*
|
|
* sendrequest - format and send a request packet
|
|
*/
|
|
static int
|
|
sendrequest(implcode, reqcode, auth, qitems, qsize, qdata)
|
|
int implcode;
|
|
int reqcode;
|
|
int auth;
|
|
int qitems;
|
|
int qsize;
|
|
char *qdata;
|
|
{
|
|
struct req_pkt qpkt;
|
|
int datasize;
|
|
|
|
memset((char *)&qpkt, 0, sizeof qpkt);
|
|
|
|
qpkt.rm_vn_mode = RM_VN_MODE(0, 0);
|
|
qpkt.implementation = (u_char)implcode;
|
|
qpkt.request = (u_char)reqcode;
|
|
|
|
datasize = qitems * qsize;
|
|
if (datasize != 0 && qdata != NULL) {
|
|
memmove((char *)qpkt.data, qdata, datasize);
|
|
qpkt.err_nitems = ERR_NITEMS(0, qitems);
|
|
qpkt.mbz_itemsize = MBZ_ITEMSIZE(qsize);
|
|
} else {
|
|
qpkt.err_nitems = ERR_NITEMS(0, 0);
|
|
qpkt.mbz_itemsize = MBZ_ITEMSIZE(0);
|
|
}
|
|
|
|
if (!auth) {
|
|
qpkt.auth_seq = AUTH_SEQ(0, 0);
|
|
return sendpkt((char *)&qpkt, REQ_LEN_NOMAC);
|
|
} else {
|
|
l_fp ts;
|
|
char *pass;
|
|
|
|
if (info_auth_keyid == 0) {
|
|
info_auth_keyid = getkeyid("Keyid: ");
|
|
if (info_auth_keyid == 0) {
|
|
(void) fprintf(stderr,
|
|
"Keyid must be defined, request not sent\n");
|
|
return 1;
|
|
}
|
|
}
|
|
if (!auth_havekey(info_auth_keyid)) {
|
|
pass = getpass("Password: ");
|
|
if (*pass != '\0')
|
|
authusekey(info_auth_keyid, info_auth_keytype,
|
|
pass);
|
|
}
|
|
if (auth_havekey(info_auth_keyid)) {
|
|
int maclen;
|
|
|
|
qpkt.auth_seq = AUTH_SEQ(1, 0);
|
|
qpkt.keyid = htonl(info_auth_keyid);
|
|
auth1crypt(info_auth_keyid, (U_LONG *)&qpkt,
|
|
REQ_LEN_NOMAC);
|
|
gettstamp(&ts);
|
|
L_ADD(&ts, &delay_time);
|
|
HTONL_FP(&ts, &qpkt.tstamp);
|
|
maclen = auth2crypt(info_auth_keyid, (U_LONG *)&qpkt,
|
|
REQ_LEN_NOMAC);
|
|
return sendpkt((char *)&qpkt, REQ_LEN_NOMAC+maclen);
|
|
} else {
|
|
(void) fprintf(stderr,
|
|
"No password, request not sent\n");
|
|
return 1;
|
|
}
|
|
}
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
|
|
/*
|
|
* doquery - send a request and process the response
|
|
*/
|
|
int
|
|
doquery(implcode, reqcode, auth, qitems, qsize, qdata, ritems, rsize, rdata,
|
|
quiet_mask)
|
|
int implcode;
|
|
int reqcode;
|
|
int auth;
|
|
int qitems;
|
|
int qsize;
|
|
char *qdata;
|
|
int *ritems;
|
|
int *rsize;
|
|
char **rdata;
|
|
int quiet_mask;
|
|
{
|
|
int res;
|
|
char junk[512];
|
|
fd_set fds;
|
|
struct timeval tvzero;
|
|
|
|
/*
|
|
* Check to make sure host is open
|
|
*/
|
|
if (!havehost) {
|
|
(void) fprintf(stderr, "***No host open, use `host' command\n");
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Poll the socket and clear out any pending data
|
|
*/
|
|
do {
|
|
tvzero.tv_sec = tvzero.tv_usec = 0;
|
|
FD_ZERO(&fds);
|
|
FD_SET(sockfd, &fds);
|
|
res = select(sockfd+1, &fds, (fd_set *)0, (fd_set *)0, &tvzero);
|
|
|
|
if (res == -1) {
|
|
warning("polling select", "", "");
|
|
return -1;
|
|
} else if (res > 0)
|
|
(void) read(sockfd, junk, sizeof junk);
|
|
} while (res > 0);
|
|
|
|
|
|
/*
|
|
* send a request
|
|
*/
|
|
res = sendrequest(implcode, reqcode, auth, qitems, qsize, qdata);
|
|
if (res != 0)
|
|
return res;
|
|
|
|
/*
|
|
* Get the response. If we got a standard error, print a message
|
|
*/
|
|
res = getresponse(implcode, reqcode, ritems, rsize, rdata);
|
|
|
|
/* log error message if not told to be quiet */
|
|
if ((res > 0) && (((1 << res) & quiet_mask) == 0)) {
|
|
switch(res) {
|
|
case INFO_ERR_IMPL:
|
|
(void) fprintf(stderr,
|
|
"***Server implementation incompatable with our own\n");
|
|
break;
|
|
case INFO_ERR_REQ:
|
|
(void) fprintf(stderr,
|
|
"***Server doesn't implement this request\n");
|
|
break;
|
|
case INFO_ERR_FMT:
|
|
(void) fprintf(stderr,
|
|
"***Server reports a format error in the received packet (shouldn't happen)\n");
|
|
break;
|
|
case INFO_ERR_NODATA:
|
|
(void) fprintf(stderr,
|
|
"***Server reports data not found\n");
|
|
break;
|
|
case INFO_ERR_AUTH:
|
|
(void) fprintf(stderr, "***Permission denied\n");
|
|
break;
|
|
case ERR_TIMEOUT:
|
|
(void) fprintf(stderr, "***Request timed out\n");
|
|
break;
|
|
case ERR_INCOMPLETE:
|
|
(void) fprintf(stderr,
|
|
"***Response from server was incomplete\n");
|
|
break;
|
|
default:
|
|
(void) fprintf(stderr,
|
|
"***Server returns unknown error code %d\n", res);
|
|
break;
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
const char *
|
|
xntpdc_prompt()
|
|
{
|
|
return (prompt);
|
|
}
|
|
|
|
/*
|
|
* getcmds - read commands from the standard input and execute them
|
|
*/
|
|
static void
|
|
getcmds()
|
|
{
|
|
static EditLine *el = NULL;
|
|
static History *hist = NULL;
|
|
char line[MAXLINE];
|
|
int num = 0;
|
|
int len;
|
|
const char *bp = NULL;
|
|
|
|
for (;;) {
|
|
if (interactive) {
|
|
if (!el) {
|
|
el = el_init("xntpdc", stdin, stdout);
|
|
hist = history_init();
|
|
history(hist, H_EVENT, 100);
|
|
el_set(el, EL_HIST, history, hist);
|
|
el_set(el, EL_EDITOR, "emacs");
|
|
el_set(el, EL_PROMPT, xntpdc_prompt);
|
|
el_set(el, EL_SIGNAL, 1);
|
|
el_source(el, NULL);
|
|
}
|
|
if ((bp = el_gets(el, &num)) == NULL || num == 0)
|
|
return;
|
|
|
|
len = (num > MAXLINE) ? MAXLINE : num;
|
|
memcpy(line, bp, len);
|
|
line[len] = 0;
|
|
history(hist, H_ENTER, bp);
|
|
|
|
} else {
|
|
if (fgets(line, sizeof line, stdin) == NULL)
|
|
return;
|
|
}
|
|
|
|
docmd(line);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* abortcmd - catch interrupts and abort the current command
|
|
*/
|
|
static RETSIGTYPE
|
|
abortcmd(sig)
|
|
int sig;
|
|
{
|
|
if (current_output == stdout)
|
|
(void) fflush(stdout);
|
|
putc('\n', stderr);
|
|
(void) fflush(stderr);
|
|
if (jump) longjmp(interrupt_buf, 1);
|
|
}
|
|
|
|
|
|
/*
|
|
* docmd - decode the command line and execute a command
|
|
*/
|
|
static void
|
|
docmd(cmdline)
|
|
char *cmdline;
|
|
{
|
|
char *tokens[1+MAXARGS+2];
|
|
struct parse pcmd;
|
|
int ntok;
|
|
static int i;
|
|
struct xcmd *xcmd;
|
|
|
|
/*
|
|
* Tokenize the command line. If nothing on it, return.
|
|
*/
|
|
tokenize(cmdline, tokens, &ntok);
|
|
if (ntok == 0)
|
|
return;
|
|
|
|
/*
|
|
* Find the appropriate command description.
|
|
*/
|
|
i = findcmd(tokens[0], builtins, opcmds, &xcmd);
|
|
if (i == 0) {
|
|
(void) fprintf(stderr, "***Command `%s' unknown\n",
|
|
tokens[0]);
|
|
return;
|
|
} else if (i >= 2) {
|
|
(void) fprintf(stderr, "***Command `%s' ambiguous\n",
|
|
tokens[0]);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Save the keyword, then walk through the arguments, interpreting
|
|
* as we go.
|
|
*/
|
|
pcmd.keyword = tokens[0];
|
|
pcmd.nargs = 0;
|
|
for (i = 0; i < MAXARGS && xcmd->arg[i] != NO; i++) {
|
|
if ((i+1) >= ntok) {
|
|
if (!(xcmd->arg[i] & OPT)) {
|
|
printusage(xcmd, stderr);
|
|
return;
|
|
}
|
|
break;
|
|
}
|
|
if ((xcmd->arg[i] & OPT) && (*tokens[i+1] == '>'))
|
|
break;
|
|
if (!getarg(tokens[i+1], (int)xcmd->arg[i], &pcmd.argval[i]))
|
|
return;
|
|
pcmd.nargs++;
|
|
}
|
|
|
|
i++;
|
|
if (i < ntok && *tokens[i] == '>') {
|
|
char *fname;
|
|
|
|
if (*(tokens[i]+1) != '\0')
|
|
fname = tokens[i]+1;
|
|
else if ((i+1) < ntok)
|
|
fname = tokens[i+1];
|
|
else {
|
|
(void) fprintf(stderr, "***No file for redirect\n");
|
|
return;
|
|
}
|
|
|
|
current_output = fopen(fname, "w");
|
|
if (current_output == NULL) {
|
|
(void) fprintf(stderr, "***Error opening %s: ", fname);
|
|
perror("");
|
|
return;
|
|
}
|
|
i = 1; /* flag we need a close */
|
|
} else {
|
|
current_output = stdout;
|
|
i = 0; /* flag no close */
|
|
}
|
|
|
|
if (interactive && setjmp(interrupt_buf)) {
|
|
return;
|
|
} else {
|
|
jump = 1;
|
|
(xcmd->handler)(&pcmd, current_output);
|
|
jump = 0;
|
|
if (i) (void) fclose(current_output);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* tokenize - turn a command line into tokens
|
|
*/
|
|
static void
|
|
tokenize(line, tokens, ntok)
|
|
char *line;
|
|
char **tokens;
|
|
int *ntok;
|
|
{
|
|
register char *cp;
|
|
register char *sp;
|
|
static char tspace[MAXLINE];
|
|
|
|
sp = tspace;
|
|
cp = line;
|
|
for (*ntok = 0; *ntok < MAXTOKENS; (*ntok)++) {
|
|
tokens[*ntok] = sp;
|
|
while (ISSPACE(*cp))
|
|
cp++;
|
|
if (ISEOL(*cp))
|
|
break;
|
|
do {
|
|
*sp++ = *cp++;
|
|
} while (!ISSPACE(*cp) && !ISEOL(*cp));
|
|
|
|
*sp++ = '\0';
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* findcmd - find a command in a command description table
|
|
*/
|
|
static int
|
|
findcmd(str, clist1, clist2, cmd)
|
|
register char *str;
|
|
struct xcmd *clist1;
|
|
struct xcmd *clist2;
|
|
struct xcmd **cmd;
|
|
{
|
|
register struct xcmd *cl;
|
|
register int clen;
|
|
int nmatch;
|
|
struct xcmd *nearmatch = NULL;
|
|
struct xcmd *clist;
|
|
|
|
clen = strlen(str);
|
|
nmatch = 0;
|
|
if (clist1 != 0)
|
|
clist = clist1;
|
|
else if (clist2 != 0)
|
|
clist = clist2;
|
|
else
|
|
return 0;
|
|
|
|
again:
|
|
for (cl = clist; cl->keyword != 0; cl++) {
|
|
/* do a first character check, for efficiency */
|
|
if (*str != *(cl->keyword))
|
|
continue;
|
|
if (strncmp(str, cl->keyword, clen) == 0) {
|
|
/*
|
|
* Could be extact match, could be approximate.
|
|
* Is exact if the length of the keyword is the
|
|
* same as the str.
|
|
*/
|
|
if (*((cl->keyword) + clen) == '\0') {
|
|
*cmd = cl;
|
|
return 1;
|
|
}
|
|
nmatch++;
|
|
nearmatch = cl;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* See if there is more to do. If so, go again. Sorry about the
|
|
* goto, too much looking at BSD sources...
|
|
*/
|
|
if (clist == clist1 && clist2 != 0) {
|
|
clist = clist2;
|
|
goto again;
|
|
}
|
|
|
|
/*
|
|
* If we got extactly 1 near match, use it, else return number
|
|
* of matches.
|
|
*/
|
|
if (nmatch == 1) {
|
|
*cmd = nearmatch;
|
|
return 1;
|
|
}
|
|
return nmatch;
|
|
}
|
|
|
|
|
|
/*
|
|
* getarg - interpret an argument token
|
|
*/
|
|
static int
|
|
getarg(str, code, argp)
|
|
char *str;
|
|
int code;
|
|
arg_v *argp;
|
|
{
|
|
int isneg;
|
|
char *cp, *np;
|
|
static char *digits = "0123456789";
|
|
|
|
switch (code & ~OPT) {
|
|
case NTP_STR:
|
|
argp->string = str;
|
|
break;
|
|
case ADD:
|
|
if (!getnetnum(str, &(argp->netnum), (char *)0)) {
|
|
return 0;
|
|
}
|
|
break;
|
|
case INT:
|
|
case UINT:
|
|
isneg = 0;
|
|
np = str;
|
|
if (*np == '-') {
|
|
np++;
|
|
isneg = 1;
|
|
}
|
|
|
|
argp->uval = 0;
|
|
do {
|
|
cp = strchr(digits, *np);
|
|
if (cp == NULL) {
|
|
(void) fprintf(stderr,
|
|
"***Illegal integer value %s\n", str);
|
|
return 0;
|
|
}
|
|
argp->uval *= 10;
|
|
argp->uval += (cp - digits);
|
|
} while (*(++np) != '\0');
|
|
|
|
if (isneg) {
|
|
if ((code & ~OPT) == UINT) {
|
|
(void) fprintf(stderr,
|
|
"***Value %s should be unsigned\n", str);
|
|
return 0;
|
|
}
|
|
argp->ival = -argp->ival;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* getnetnum - given a host name, return its net number
|
|
* and (optional) full name
|
|
*/
|
|
static int
|
|
getnetnum(host, num, fullhost)
|
|
char *host;
|
|
u_long *num;
|
|
char *fullhost;
|
|
{
|
|
struct hostent *hp;
|
|
|
|
if (decodenetnum(host, num)) {
|
|
if (fullhost != 0) {
|
|
(void) sprintf(fullhost,
|
|
"%u.%u.%u.%u", (u_int)((htonl(*num)>>24)&0xff),
|
|
(u_int)((htonl(*num)>>16)&0xff), (u_int)((htonl(*num)>>8)&0xff),
|
|
(u_int)(htonl(*num)&0xff));
|
|
}
|
|
return 1;
|
|
} else if ((hp = gethostbyname(host)) != 0) {
|
|
memmove((char *)num, hp->h_addr, sizeof(u_long));
|
|
if (fullhost != 0)
|
|
(void) strcpy(fullhost, hp->h_name);
|
|
return 1;
|
|
} else {
|
|
(void) fprintf(stderr, "***Can't find host %s\n", host);
|
|
return 0;
|
|
}
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
/*
|
|
* nntohost - convert network number to host name. This routine enforces
|
|
* the showhostnames setting.
|
|
*/
|
|
char *
|
|
nntohost(netnum)
|
|
u_long netnum;
|
|
{
|
|
if (!showhostnames)
|
|
return numtoa(netnum);
|
|
if ((ntohl(netnum) & REFCLOCK_MASK) == REFCLOCK_ADDR)
|
|
return refnumtoa(netnum);
|
|
return numtohost(netnum);
|
|
}
|
|
|
|
|
|
/*
|
|
* Finally, the built in command handlers
|
|
*/
|
|
|
|
/*
|
|
* help - tell about commands, or details of a particular command
|
|
*/
|
|
static void
|
|
help(pcmd, fp)
|
|
struct parse *pcmd;
|
|
FILE *fp;
|
|
{
|
|
int i;
|
|
int n;
|
|
struct xcmd *xcp;
|
|
char *cmd;
|
|
char *cmdsort[100];
|
|
int length[100];
|
|
int maxlength;
|
|
int numperline;
|
|
static char *spaces = " "; /* 20 spaces */
|
|
|
|
if (pcmd->nargs == 0) {
|
|
n = 0;
|
|
for (xcp = builtins; xcp->keyword != 0; xcp++) {
|
|
if (*(xcp->keyword) != '?')
|
|
cmdsort[n++] = xcp->keyword;
|
|
}
|
|
for (xcp = opcmds; xcp->keyword != 0; xcp++)
|
|
cmdsort[n++] = xcp->keyword;
|
|
|
|
#if defined(sgi) || defined(SYS_BSDI) || defined(__STDC__)
|
|
qsort((void *)cmdsort, n, sizeof(char *), helpsort);
|
|
#else
|
|
qsort((char *)cmdsort, n, sizeof(char *), helpsort);
|
|
#endif /* sgi */
|
|
|
|
maxlength = 0;
|
|
for (i = 0; i < n; i++) {
|
|
length[i] = strlen(cmdsort[i]);
|
|
if (length[i] > maxlength)
|
|
maxlength = length[i];
|
|
}
|
|
maxlength++;
|
|
numperline = 76 / maxlength;
|
|
|
|
(void) fprintf(fp, "Commands available:\n");
|
|
for (i = 0; i < n; i++) {
|
|
if ((i % numperline) == (numperline-1)
|
|
|| i == (n-1))
|
|
(void) fprintf(fp, "%s\n", cmdsort[i]);
|
|
else
|
|
(void) fprintf(fp, "%s%s", cmdsort[i],
|
|
spaces+20-maxlength+length[i]);
|
|
}
|
|
} else {
|
|
cmd = pcmd->argval[0].string;
|
|
n = findcmd(cmd, builtins, opcmds, &xcp);
|
|
if (n == 0) {
|
|
(void) fprintf(stderr,
|
|
"Command `%s' is unknown\n", cmd);
|
|
return;
|
|
} else if (n >= 2) {
|
|
(void) fprintf(stderr,
|
|
"Command `%s' is ambiguous\n", cmd);
|
|
return;
|
|
}
|
|
(void) fprintf(fp, "function: %s\n", xcp->comment);
|
|
printusage(xcp, fp);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* helpsort - do hostname qsort comparisons
|
|
*/
|
|
static int
|
|
#if defined(sgi) || defined(SYS_BSDI) || defined(__STDC__)
|
|
helpsort(t1, t2)
|
|
const void *t1;
|
|
const void *t2;
|
|
{
|
|
const char **name1 = (const char **)t1;
|
|
const char **name2 = (const char **)t2;
|
|
#else
|
|
helpsort(name1, name2)
|
|
char **name1;
|
|
char **name2;
|
|
{
|
|
#endif /* sgi || bsdi */
|
|
return strcmp(*name1, *name2);
|
|
}
|
|
|
|
|
|
/*
|
|
* printusage - print usage information for a command
|
|
*/
|
|
static void
|
|
printusage(xcp, fp)
|
|
struct xcmd *xcp;
|
|
FILE *fp;
|
|
{
|
|
register int i;
|
|
|
|
(void) fprintf(fp, "usage: %s", xcp->keyword);
|
|
for (i = 0; i < MAXARGS && xcp->arg[i] != NO; i++) {
|
|
if (xcp->arg[i] & OPT)
|
|
(void) fprintf(fp, " [ %s ]", xcp->desc[i]);
|
|
else
|
|
(void) fprintf(fp, " %s", xcp->desc[i]);
|
|
}
|
|
(void) fprintf(fp, "\n");
|
|
}
|
|
|
|
|
|
/*
|
|
* timeout - set time out time
|
|
*/
|
|
static void
|
|
timeout(pcmd, fp)
|
|
struct parse *pcmd;
|
|
FILE *fp;
|
|
{
|
|
int val;
|
|
|
|
if (pcmd->nargs == 0) {
|
|
val = tvout.tv_sec * 1000 + tvout.tv_usec / 1000;
|
|
(void) fprintf(fp, "primary timeout %d ms\n", val);
|
|
} else {
|
|
tvout.tv_sec = pcmd->argval[0].uval / 1000;
|
|
tvout.tv_usec = (pcmd->argval[0].uval - (tvout.tv_sec * 1000))
|
|
* 1000;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* delay - set delay for auth requests
|
|
*/
|
|
static void
|
|
delay(pcmd, fp)
|
|
struct parse *pcmd;
|
|
FILE *fp;
|
|
{
|
|
int isneg;
|
|
u_long val;
|
|
|
|
if (pcmd->nargs == 0) {
|
|
val = delay_time.l_ui * 1000 + delay_time.l_uf / 4294967;
|
|
(void) fprintf(fp, "delay %lu ms\n", val);
|
|
} else {
|
|
if (pcmd->argval[0].ival < 0) {
|
|
isneg = 1;
|
|
val = (u_long)(-pcmd->argval[0].ival);
|
|
} else {
|
|
isneg = 0;
|
|
val = (u_long)pcmd->argval[0].ival;
|
|
}
|
|
|
|
delay_time.l_ui = val / 1000;
|
|
val %= 1000;
|
|
delay_time.l_uf = val * 4294967; /* 2**32/1000 */
|
|
|
|
if (isneg)
|
|
L_NEG(&delay_time);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* host - set the host we are dealing with.
|
|
*/
|
|
static void
|
|
host(pcmd, fp)
|
|
struct parse *pcmd;
|
|
FILE *fp;
|
|
{
|
|
if (pcmd->nargs == 0) {
|
|
if (havehost)
|
|
(void) fprintf(fp, "current host is %s\n", currenthost);
|
|
else
|
|
(void) fprintf(fp, "no current host\n");
|
|
} else if (openhost(pcmd->argval[0].string)) {
|
|
(void) fprintf(fp, "current host set to %s\n", currenthost);
|
|
} else {
|
|
if (havehost)
|
|
(void) fprintf(fp,
|
|
"current host remains %s\n", currenthost);
|
|
else
|
|
(void) fprintf(fp, "still no current host\n");
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* keyid - get a keyid to use for authenticating requests
|
|
*/
|
|
static void
|
|
keyid(pcmd, fp)
|
|
struct parse *pcmd;
|
|
FILE *fp;
|
|
{
|
|
if (pcmd->nargs == 0) {
|
|
if (info_auth_keyid == 0)
|
|
(void) fprintf(fp, "no keyid defined\n");
|
|
else
|
|
(void) fprintf(fp, "keyid is %lu\n", info_auth_keyid);
|
|
} else {
|
|
info_auth_keyid = pcmd->argval[0].uval;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* keytype - get type of key to use for authenticating requests
|
|
*/
|
|
static void
|
|
keytype(pcmd, fp)
|
|
struct parse *pcmd;
|
|
FILE *fp;
|
|
{
|
|
if (pcmd->nargs == 0)
|
|
fprintf(fp, "keytype is %s",
|
|
(info_auth_keytype == KEY_TYPE_MD5) ? "md5" : "des");
|
|
else
|
|
switch (*(pcmd->argval[0].string)) {
|
|
case 'm':
|
|
case 'M':
|
|
info_auth_keytype = KEY_TYPE_MD5;
|
|
break;
|
|
|
|
case 'd':
|
|
case 'D':
|
|
info_auth_keytype = KEY_TYPE_DES;
|
|
break;
|
|
|
|
default:
|
|
fprintf(fp, "keytype must be 'md5' or 'des'\n");
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* passwd - get an authentication key
|
|
*/
|
|
/*ARGSUSED*/
|
|
static void
|
|
passwd(pcmd, fp)
|
|
struct parse *pcmd;
|
|
FILE *fp;
|
|
{
|
|
char *pass;
|
|
|
|
if (info_auth_keyid == 0) {
|
|
info_auth_keyid = getkeyid("Keyid: ");
|
|
if (info_auth_keyid == 0) {
|
|
(void)fprintf(fp, "Keyid must be defined\n");
|
|
return;
|
|
}
|
|
}
|
|
if (!interactive) {
|
|
authusekey(info_auth_keyid, info_auth_keytype,
|
|
pcmd->argval[0].string);
|
|
} else {
|
|
pass = getpass("Password: ");
|
|
if (*pass == '\0')
|
|
(void) fprintf(fp, "Password unchanged\n");
|
|
else
|
|
authusekey(info_auth_keyid, info_auth_keytype, pass);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* hostnames - set the showhostnames flag
|
|
*/
|
|
static void
|
|
hostnames(pcmd, fp)
|
|
struct parse *pcmd;
|
|
FILE *fp;
|
|
{
|
|
if (pcmd->nargs == 0) {
|
|
if (showhostnames)
|
|
(void) fprintf(fp, "hostnames being shown\n");
|
|
else
|
|
(void) fprintf(fp, "hostnames not being shown\n");
|
|
} else {
|
|
if (STREQ(pcmd->argval[0].string, "yes"))
|
|
showhostnames = 1;
|
|
else if (STREQ(pcmd->argval[0].string, "no"))
|
|
showhostnames = 0;
|
|
else
|
|
(void)fprintf(stderr, "What?\n");
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* setdebug - set/change debugging level
|
|
*/
|
|
static void
|
|
setdebug(pcmd, fp)
|
|
struct parse *pcmd;
|
|
FILE *fp;
|
|
{
|
|
if (pcmd->nargs == 0) {
|
|
(void) fprintf(fp, "debug level is %d\n", debug);
|
|
return;
|
|
} else if (STREQ(pcmd->argval[0].string, "no")) {
|
|
debug = 0;
|
|
} else if (STREQ(pcmd->argval[0].string, "more")) {
|
|
debug++;
|
|
} else if (STREQ(pcmd->argval[0].string, "less")) {
|
|
debug--;
|
|
} else {
|
|
(void) fprintf(fp, "What?\n");
|
|
return;
|
|
}
|
|
(void) fprintf(fp, "debug level set to %d\n", debug);
|
|
}
|
|
|
|
|
|
/*
|
|
* quit - stop this nonsense
|
|
*/
|
|
/*ARGSUSED*/
|
|
static void
|
|
quit(pcmd, fp)
|
|
struct parse *pcmd;
|
|
FILE *fp;
|
|
{
|
|
if (havehost)
|
|
(void) close(sockfd); /* cleanliness next to godliness */
|
|
exit(0);
|
|
}
|
|
|
|
|
|
/*
|
|
* version - print the current version number
|
|
*/
|
|
/*ARGSUSED*/
|
|
static void
|
|
version(pcmd, fp)
|
|
struct parse *pcmd;
|
|
FILE *fp;
|
|
{
|
|
extern char *Version;
|
|
|
|
(void) fprintf(fp, "%s\n", Version);
|
|
}
|
|
|
|
|
|
/*
|
|
* warning - print a warning message
|
|
*/
|
|
static void
|
|
warning(fmt, st1, st2)
|
|
char *fmt;
|
|
char *st1;
|
|
char *st2;
|
|
{
|
|
(void) fprintf(stderr, "%s: ", progname);
|
|
(void) fprintf(stderr, fmt, st1, st2);
|
|
(void) fprintf(stderr, ": ");
|
|
perror("");
|
|
}
|
|
|
|
|
|
/*
|
|
* error - print a message and exit
|
|
*/
|
|
static void
|
|
error(fmt, st1, st2)
|
|
char *fmt;
|
|
char *st1;
|
|
char *st2;
|
|
{
|
|
warning(fmt, st1, st2);
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* getkeyid - prompt the user for a keyid to use
|
|
*/
|
|
static u_long
|
|
getkeyid(prompt)
|
|
char *prompt;
|
|
{
|
|
register char *p;
|
|
register c;
|
|
FILE *fi;
|
|
char pbuf[20];
|
|
|
|
if ((fi = fdopen(open("/dev/tty", 2), "r")) == NULL)
|
|
fi = stdin;
|
|
else
|
|
setbuf(fi, (char *)NULL);
|
|
fprintf(stderr, "%s", prompt); fflush(stderr);
|
|
for (p=pbuf; (c = getc(fi))!='\n' && c!=EOF;) {
|
|
if (p < &pbuf[18])
|
|
*p++ = c;
|
|
}
|
|
*p = '\0';
|
|
if (fi != stdin)
|
|
fclose(fi);
|
|
return (u_long)atoi(pbuf);
|
|
}
|