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Annotation of researchv10dc/ipc/internet/gettable.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1983 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  */
                     17: 
                     18: #ifndef lint
                     19: char copyright[] =
                     20: "@(#) Copyright (c) 1983 The Regents of the University of California.\n\
                     21:  All rights reserved.\n";
                     22: #endif /* not lint */
                     23: 
                     24: #ifndef lint
                     25: static char sccsid[] = "@(#)gettable.c 5.4 (Berkeley) 10/11/88";
                     26: #endif /* not lint */
                     27: 
                     28: #include <sys/types.h>
                     29: 
                     30: #include <stdio.h>
                     31: #include <ipc.h>
                     32: 
                     33: 
                     34: #define        OUTFILE         "hosts.txt"     /* default output file */
                     35: #define        VERFILE         "hosts.ver"     /* default version file */
                     36: #define        QUERY           "ALL\r\n"       /* query to hostname server */
                     37: #define        VERSION         "VERSION\r\n"   /* get version number */
                     38: 
                     39: #define        equaln(s1, s2, n)       (!strncmp(s1, s2, n))
                     40: 
                     41: char   buf[BUFSIZ];
                     42: char   *outfile = OUTFILE;
                     43: 
                     44: main(argc, argv)
                     45:        int argc;
                     46:        char *argv[];
                     47: {
                     48:        int s;
                     49:        register len;
                     50:        register FILE *sfi, *sfo, *hf;
                     51:        char *host;
                     52:        register struct hostent *hp;
                     53:        struct servent *sp;
                     54:        int version = 0;
                     55:        int beginseen = 0;
                     56:        int endseen = 0;
                     57: 
                     58:        argv++, argc--;
                     59:        if (**argv == '-') {
                     60:                if (argv[0][1] != 'v')
                     61:                        fprintf(stderr, "unknown option %s ignored\n", *argv);
                     62:                else
                     63:                        version++, outfile = VERFILE;
                     64:                argv++, argc--;
                     65:        }
                     66:        if (argc < 1 || argc > 2) {
                     67:                fprintf(stderr, "usage: gettable [-v] host [ file ]\n");
                     68:                exit(1);
                     69:        }
                     70:        host = *argv;
                     71:        argv++, argc--;
                     72:        if ((s = ipcopen(ipcpath(host, "tcp", "hostnames")))< 0) {
                     73:                fprintf(stderr, "gettable: connect: %s\n", errstr);
                     74:                exit(6);
                     75:        }
                     76:        if (argc > 0)
                     77:                outfile = *argv;
                     78:        sfi = fdopen(s, "r");
                     79:        sfo = fdopen(s, "w");
                     80:        if (sfi == NULL || sfo == NULL) {
                     81:                perror("gettable: fdopen");
                     82:                close(s);
                     83:                exit(1);
                     84:        }
                     85:        hf = fopen(outfile, "w");
                     86:        if (hf == NULL) {
                     87:                fprintf(stderr, "gettable: "); perror(outfile);
                     88:                close(s);
                     89:                exit(1);
                     90:        }
                     91:        fprintf(sfo, version ? VERSION : QUERY);
                     92:        fflush(sfo);
                     93:        while (fgets(buf, sizeof(buf), sfi) != NULL) {
                     94:                len = strlen(buf);
                     95:                buf[len-2] = '\0';
                     96:                if (!version && equaln(buf, "BEGIN", 5)) {
                     97:                        if (beginseen || endseen) {
                     98:                                fprintf(stderr,
                     99:                                    "gettable: BEGIN sequence error\n");
                    100:                                exit(90);
                    101:                        }
                    102:                        beginseen++;
                    103:                        continue;
                    104:                }
                    105:                if (!version && equaln(buf, "END", 3)) {
                    106:                        if (!beginseen || endseen) {
                    107:                                fprintf(stderr,
                    108:                                    "gettable: END sequence error\n");
                    109:                                exit(91);
                    110:                        }
                    111:                        endseen++;
                    112:                        continue;
                    113:                }
                    114:                if (equaln(buf, "ERR", 3)) {
                    115:                        fprintf(stderr,
                    116:                            "gettable: hostname service error: %s", buf);
                    117:                        exit(92);
                    118:                }
                    119:                fprintf(hf, "%s\n", buf);
                    120:        }
                    121:        fclose(hf);
                    122:        if (!version) {
                    123:                if (!beginseen) {
                    124:                        fprintf(stderr, "gettable: no BEGIN seen\n");
                    125:                        exit(93);
                    126:                }
                    127:                if (!endseen) {
                    128:                        fprintf(stderr, "gettable: no END seen\n");
                    129:                        exit(94);
                    130:                }
                    131:        }
                    132:        close(s);
                    133:        exit(0);
                    134: }

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