1 /* remote.c 4.2 81/06/16 */ 2 # include "tip.h" 3 4 /* 5 * Attributes to be gleened from remote host description 6 * data base. 7 */ 8 static char **caps[] = { 9 &AT, &DV, &CM, &CU, &EL, &IE, &OE, &PN 10 }; 11 12 static char *capstrings[] = { 13 "at", "dv", "cm", "cu", "el", "ie", "oe", "pn", 0 14 }; 15 16 char *rgetstr(); 17 18 static 19 getremcap(host) 20 register char *host; 21 { 22 int stat; 23 char tbuf[BUFSIZ]; 24 static char buf[BUFSIZ/2]; 25 char *bp = buf; 26 register char **p, ***q; 27 28 if ((stat = rgetent(tbuf, host)) <= 0) { 29 fprintf(stderr, stat == 0 ? 30 "tip: unknown host %s\n" : 31 "tip: can't open host description file\n", host); 32 exit(3); 33 } 34 35 for (p = capstrings, q = caps; *p != NULL; p++, q++) 36 **q = rgetstr(*p, &bp); 37 if ((BR = rgetnum("br")) < 0) 38 BR = DEFBR; 39 if ((FS = rgetnum("fs")) < 0) 40 FS = DEFFS; 41 DU = rgetflag("du"); 42 HW = rgetflag("hw"); 43 if (DV == NOSTR) { 44 fprintf(stderr, "%s: missing device spec\n", host); 45 exit(3); 46 } 47 if (DU && CU == NOSTR) 48 CU = DV; 49 if (DU && PN == NOSTR) { 50 fprintf(stderr, "%s: missing phone number\n", host); 51 exit(3); 52 } 53 HO = host; 54 } 55 56 char * 57 getremote(host) 58 char *host; 59 { 60 register char *cp; 61 static char *next; 62 static int lookedup = 0; 63 64 if (!lookedup) { 65 if (host == NOSTR && (host = getenv("HOST")) == NOSTR) { 66 fprintf(stderr, "tip: no host specified\n"); 67 exit(3); 68 } 69 getremcap(host); 70 next = DV; 71 lookedup++; 72 } 73 /* 74 * We return a new device each time we're called (to allow 75 * a rotary action to be simulated) 76 */ 77 if (next == NOSTR) 78 return(NOSTR); 79 if ((cp = index(next, ',')) == NULL) { 80 DV = next; 81 next = NOSTR; 82 } else { 83 *cp++ = '\0'; 84 DV = next; 85 next = cp; 86 } 87 return(DV); 88 } 89