diff options
Diffstat (limited to 'usr.sbin/xntpd/xntpdc/ntpdc.c')
| -rw-r--r-- | usr.sbin/xntpd/xntpdc/ntpdc.c | 1536 |
1 files changed, 1536 insertions, 0 deletions
diff --git a/usr.sbin/xntpd/xntpdc/ntpdc.c b/usr.sbin/xntpd/xntpdc/ntpdc.c new file mode 100644 index 0000000..c5fdf72 --- /dev/null +++ b/usr.sbin/xntpd/xntpdc/ntpdc.c @@ -0,0 +1,1536 @@ +/* ntpdc.c,v 3.1 1993/07/06 01:11:59 jbj Exp + * xntpdc - control and monitor your xntpd daemon + */ +#include <stdio.h> +#include <ctype.h> +#include <signal.h> +#include <setjmp.h> +#include <sys/types.h> +#include <sys/time.h> +#include <netdb.h> + +#include "ntpdc.h" +#include "ntp_select.h" +#include "ntp_io.h" +#include "ntp_stdlib.h" + +/* + * Because we now potentially understand a lot of commands (and + * it requires a lot of commands to talk to xntpd) we will run + * interactive if connected to a terminal. + */ +static int interactive = 0; /* set to 1 when we should prompt */ +static char * prompt = "xntpdc> "; /* prompt to ask him about */ + + +/* + * Keyid used for authenticated requests. Obtained on the fly. + */ +static U_LONG info_auth_keyid; + +/* + * Type of key md5 or des + */ +#define KEY_TYPE_DES 3 +#define KEY_TYPE_MD5 4 + +static int info_auth_keytype = KEY_TYPE_DES; /* DES */ + + +/* + * Built in command handler declarations + */ +static int openhost P((char *)); +static int sendpkt P((char *, int)); +static void growpktdata P((void)); +static int getresponse P((int, int, int *, int *, char **)); +static int sendrequest P((int, int, int, int, int, char *)); +static void getcmds P((void)); +static RETSIGTYPE abortcmd P((int)); +static void docmd P((char *)); +static void tokenize P((char *, char **, int *)); +static int findcmd P((char *, struct xcmd *, struct xcmd *, struct xcmd **)); +static int getarg P((char *, int, arg_v *)); +static int getnetnum P((char *, U_LONG *, char *)); +static void help P((struct parse *, FILE *)); +#if defined(sgi) +static int helpsort P((const void *, const void *)); +#else +static int helpsort P((char **, char **)); +#endif /* sgi */ +static void printusage P((struct xcmd *, FILE *)); +static void timeout P((struct parse *, FILE *)); +static void delay P((struct parse *, FILE *)); +static void host P((struct parse *, FILE *)); +static void ntp_poll P((struct parse *, FILE *)); +static void keyid P((struct parse *, FILE *)); +static void keytype P((struct parse *, FILE *)); +static void passwd P((struct parse *, FILE *)); +static void hostnames P((struct parse *, FILE *)); +static void setdebug P((struct parse *, FILE *)); +static void quit P((struct parse *, FILE *)); +static void version P((struct parse *, FILE *)); +static void warning P((char *, char *, char *)); +static void error P((char *, char *, char *)); +static U_LONG getkeyid P((char *)); + + +/* + * Built-in commands we understand + */ +static struct xcmd builtins[] = { + { "?", help, { OPT|STR, NO, NO, NO }, + { "command", "", "", "" }, + "tell the use and syntax of commands" }, + { "help", help, { OPT|STR, NO, NO, NO }, + { "command", "", "", "" }, + "tell the use and syntax of commands" }, + { "timeout", timeout, { OPT|UINT, NO, NO, NO }, + { "msec", "", "", "" }, + "set the primary receive time out" }, + { "delay", delay, { OPT|INT, NO, NO, NO }, + { "msec", "", "", "" }, + "set the delay added to encryption time stamps" }, + { "host", host, { OPT|STR, NO, NO, NO }, + { "hostname", "", "", "" }, + "specify the host whose NTP server we talk to" }, + { "poll", ntp_poll, { OPT|UINT, OPT|STR, NO, NO }, + { "n", "verbose", "", "" }, + "poll an NTP server in client mode `n' times" }, + { "passwd", passwd, { NO, NO, NO, NO }, + { "", "", "", "" }, + "specify a password to use for authenticated requests"}, + { "hostnames", hostnames, { OPT|STR, NO, NO, NO }, + { "yes|no", "", "", "" }, + "specify whether hostnames or net numbers are printed"}, + { "debug", setdebug, { OPT|STR, NO, NO, NO }, + { "no|more|less", "", "", "" }, + "set/change debugging level" }, + { "quit", quit, { NO, NO, NO, NO }, + { "", "", "", "" }, + "exit xntpdc" }, + { "keyid", keyid, { OPT|UINT, NO, NO, NO }, + { "key#", "", "", "" }, + "set keyid to use for authenticated requests" }, + { "keytype", keytype, { STR, NO, NO, NO }, + { "key type (md5|des)", "", "", "" }, + "set key type to use for authenticated requests (des|md5)" }, + { "version", version, { NO, NO, NO, NO }, + { "", "", "", "" }, + "print version number" }, + { 0, 0, { NO, NO, NO, NO }, + { "", "", "", "" }, "" } +}; + + +/* + * Default values we use. + */ +#define DEFTIMEOUT (5) /* 5 second time out */ +#define DEFSTIMEOUT (2) /* 2 second time out after first */ +#define DEFDELAY 0x51EB852 /* 20 milliseconds, l_fp fraction */ +#define DEFHOST "localhost" /* default host name */ +#define LENHOSTNAME 256 /* host name is 256 characters LONG */ +#define MAXCMDS 100 /* maximum commands on cmd line */ +#define MAXHOSTS 100 /* maximum hosts on cmd line */ +#define MAXLINE 512 /* maximum line length */ +#define MAXTOKENS (1+MAXARGS+2) /* maximum number of usable tokens */ + +/* + * Some variables used and manipulated locally + */ +static struct timeval tvout = { DEFTIMEOUT, 0 }; /* time out for reads */ +static struct timeval tvsout = { DEFSTIMEOUT, 0 }; /* secondary time out */ +static l_fp delay_time; /* delay time */ +static char currenthost[LENHOSTNAME]; /* current host name */ +static struct sockaddr_in hostaddr = { 0 }; /* host address */ +static int showhostnames = 1; /* show host names by default */ + +static int sockfd; /* fd socket is openned on */ +static int havehost = 0; /* set to 1 when host open */ + struct servent *server_entry = NULL; /* server entry for ntp */ + +/* + * Holds data returned from queries. We allocate INITDATASIZE + * octets to begin with, increasing this as we need to. + */ +#define INITDATASIZE (sizeof(struct resp_pkt) * 16) +#define INCDATASIZE (sizeof(struct resp_pkt) * 8) + +static char *pktdata; +static int pktdatasize; + +/* + * For commands typed on the command line (with the -c option) + */ +static int numcmds = 0; +static char *ccmds[MAXCMDS]; +#define ADDCMD(cp) if (numcmds < MAXCMDS) ccmds[numcmds++] = (cp) + +/* + * When multiple hosts are specified. + */ +static int numhosts = 0; +static char *chosts[MAXHOSTS]; +#define ADDHOST(cp) if (numhosts < MAXHOSTS) chosts[numhosts++] = (cp) + +/* + * Error codes for internal use + */ +#define ERR_INCOMPLETE 16 +#define ERR_TIMEOUT 17 + +/* + * Macro definitions we use + */ +#define ISSPACE(c) ((c) == ' ' || (c) == '\t') +#define ISEOL(c) ((c) == '\n' || (c) == '\r' || (c) == '\0') +#define STREQ(a, b) (*(a) == *(b) && strcmp((a), (b)) == 0) + +/* + * For converting time stamps to dates + */ +#define JAN_1970 2208988800 /* 1970 - 1900 in seconds */ + +/* + * Jump buffer for longjumping back to the command level + */ +static jmp_buf interrupt_buf; +static int jump = 0; + +/* + * Pointer to current output unit + */ +static FILE *current_output; + +/* + * Command table imported from ntpdc_ops.c + */ +extern struct xcmd opcmds[]; + +char *progname; +int debug; + +/* + * main - parse arguments and handle options + */ +void +main(argc, argv) +int argc; +char *argv[]; +{ + int c; + int errflg = 0; + extern int optind; + extern char *optarg; + + delay_time.l_ui = 0; + delay_time.l_uf = DEFDELAY; + + progname = argv[0]; + while ((c = getopt_l(argc, argv, "c:dilnps")) != EOF) + switch (c) { + case 'c': + ADDCMD(optarg); + break; + case 'd': + ++debug; + break; + case 'i': + interactive = 1; + break; + case 'l': + ADDCMD("listpeers"); + break; + case 'n': + showhostnames = 0; + break; + case 'p': + ADDCMD("peers"); + break; + case 's': + ADDCMD("dmpeers"); + break; + default: + errflg++; + break; + } + if (errflg) { + (void) fprintf(stderr, + "usage: %s [-dilnps] [-c cmd] host ...\n", + progname); + exit(2); + } + if (optind == argc) { + ADDHOST(DEFHOST); + } else { + for (; optind < argc; optind++) + ADDHOST(argv[optind]); + } + + if (numcmds == 0 && interactive == 0 + && isatty(fileno(stdin)) && isatty(fileno(stderr))) { + interactive = 1; + } + + if (interactive) + (void) signal_no_reset(SIGINT, abortcmd); + + /* + * Initialize the packet data buffer + */ + pktdata = (char *)malloc(INITDATASIZE); + if (pktdata == NULL) { + (void) fprintf(stderr, "%s: malloc() failed!\n", progname); + exit(1); + } + pktdatasize = INITDATASIZE; + + if (numcmds == 0) { + (void) openhost(chosts[0]); + getcmds(); + } else { + int ihost; + int icmd; + + for (ihost = 0; ihost < numhosts; ihost++) { + if (openhost(chosts[ihost])) + for (icmd = 0; icmd < numcmds; icmd++) { + if (numhosts > 1) + printf ("--- %s ---\n",chosts[ihost]); + docmd(ccmds[icmd]); + } + } + } + exit(0); +} + + +/* + * openhost - open a socket to a host + */ +static int +openhost(hname) + char *hname; +{ + U_LONG netnum; + char temphost[LENHOSTNAME]; + + if (server_entry == NULL) { + server_entry = getservbyname("ntp", "udp"); + if (server_entry == NULL) { + (void) fprintf(stderr, "%s: ntp/udp: unknown service\n", + progname); + exit(1); + } + if (debug > 2) + printf("Got ntp/udp service entry\n"); + } + + if (!getnetnum(hname, &netnum, temphost)) + return 0; + + if (debug > 2) + printf("Opening host %s\n", temphost); + + if (havehost == 1) { + if (debug > 2) + printf("Closing old host %s\n", currenthost); + (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 */ + bzero(haveseq, 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)) + growpktdata(); + bcopy((char *)rpkt.data, datap, 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; + + bzero((char *)&qpkt, 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) { + bcopy(qdata, (char *)qpkt.data, 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) + int implcode; + int reqcode; + int auth; + int qitems; + int qsize; + char *qdata; + int *ritems; + int *rsize; + char **rdata; +{ + 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); + + if (res > 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"); + 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; +} + + +/* + * getcmds - read commands from the standard input and execute them + */ +static void +getcmds() +{ + char line[MAXLINE]; + + for (;;) { + if (interactive) { + (void) fputs(prompt, stderr); + (void) fflush(stderr); + } + + 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); + 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 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, + "%d.%d.%d.%d", ((htonl(*num)>>24)&0xff), + ((htonl(*num)>>16)&0xff), ((htonl(*num)>>8)&0xff), + (htonl(*num)&0xff)); + } + return 1; + } else if ((hp = gethostbyname(host)) != 0) { + bcopy(hp->h_addr, (char *)num, 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) + 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) +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 */ + 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 %d 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"); + } +} + + +/* + * poll - do one (or more) polls of the host via NTP + */ +/*ARGSUSED*/ +static void +ntp_poll(pcmd, fp) + struct parse *pcmd; + FILE *fp; +{ + (void) fprintf(fp, "poll not implemented yet\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 %u\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; + } + } + 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); +} |
