projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 3f48242d | 1 | /* remote.c 4.5 81/11/29 */ |
| 8274ea85 BJ |
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++) | |
| 3f48242d SL |
36 | if (**q == NULL) |
| 37 | **q = rgetstr(*p, &bp); | |
| 38 | if (!BR && (BR = rgetnum("br")) < 0) | |
| 8274ea85 BJ |
39 | BR = DEFBR; |
| 40 | if ((FS = rgetnum("fs")) < 0) | |
| 41 | FS = DEFFS; | |
| 3f48242d SL |
42 | if (DU < 0) |
| 43 | DU = 0; | |
| 44 | else | |
| 45 | DU = rgetflag("du"); | |
| 8274ea85 BJ |
46 | if (DV == NOSTR) { |
| 47 | fprintf(stderr, "%s: missing device spec\n", host); | |
| 48 | exit(3); | |
| 49 | } | |
| 50 | if (DU && CU == NOSTR) | |
| 51 | CU = DV; | |
| 52 | if (DU && PN == NOSTR) { | |
| 53 | fprintf(stderr, "%s: missing phone number\n", host); | |
| 54 | exit(3); | |
| 55 | } | |
| 3e90c816 SL |
56 | /* |
| 57 | * This effectively eliminates the "hw" attribute | |
| 58 | * from the description file | |
| 59 | */ | |
| 60 | if (!HW) | |
| 61 | HW = (CU == NOSTR) || (DU && equal(DV, CU)); | |
| 8274ea85 BJ |
62 | HO = host; |
| 63 | } | |
| 64 | ||
| 65 | char * | |
| 66 | getremote(host) | |
| 67 | char *host; | |
| 68 | { | |
| 69 | register char *cp; | |
| 70 | static char *next; | |
| 71 | static int lookedup = 0; | |
| 72 | ||
| 73 | if (!lookedup) { | |
| 74 | if (host == NOSTR && (host = getenv("HOST")) == NOSTR) { | |
| 75 | fprintf(stderr, "tip: no host specified\n"); | |
| 76 | exit(3); | |
| 77 | } | |
| 78 | getremcap(host); | |
| 79 | next = DV; | |
| 80 | lookedup++; | |
| 81 | } | |
| 82 | /* | |
| 83 | * We return a new device each time we're called (to allow | |
| 84 | * a rotary action to be simulated) | |
| 85 | */ | |
| 86 | if (next == NOSTR) | |
| 3f48242d | 87 | return (NOSTR); |
| 8274ea85 BJ |
88 | if ((cp = index(next, ',')) == NULL) { |
| 89 | DV = next; | |
| 90 | next = NOSTR; | |
| 91 | } else { | |
| 92 | *cp++ = '\0'; | |
| 93 | DV = next; | |
| 94 | next = cp; | |
| 95 | } | |
| 3f48242d | 96 | return (DV); |
| 8274ea85 | 97 | } |