projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 8ea4199d DF |
1 | /* |
| 2 | * Copyright (c) 1983 Regents of the University of California. | |
| 3 | * All rights reserved. The Berkeley software License Agreement | |
| 4 | * specifies the terms and conditions for redistribution. | |
| 5 | */ | |
| 6 | ||
| 2ce81398 | 7 | #if defined(LIBC_SCCS) && !defined(lint) |
| 4533a593 | 8 | static char sccsid[] = "@(#)getservent.c 5.4 (Berkeley) %G%"; |
| 2ce81398 | 9 | #endif LIBC_SCCS and not lint |
| 229225cd SL |
10 | |
| 11 | #include <stdio.h> | |
| 4533a593 | 12 | #include <sys/param.h> |
| 62fc8b9c | 13 | #include <sys/types.h> |
| 229225cd SL |
14 | #include <sys/socket.h> |
| 15 | #include <netdb.h> | |
| 16 | #include <ctype.h> | |
| 17 | ||
| 18 | #define MAXALIASES 35 | |
| 19 | ||
| 62fc8b9c | 20 | static char SERVDB[] = "/etc/services"; |
| 229225cd SL |
21 | static FILE *servf = NULL; |
| 22 | static char line[BUFSIZ+1]; | |
| 23 | static struct servent serv; | |
| 24 | static char *serv_aliases[MAXALIASES]; | |
| 229225cd | 25 | static char *any(); |
| 5442f2c7 | 26 | int _serv_stayopen; |
| 229225cd SL |
27 | |
| 28 | setservent(f) | |
| 29 | int f; | |
| 30 | { | |
| 31 | if (servf == NULL) | |
| 32 | servf = fopen(SERVDB, "r" ); | |
| 33 | else | |
| 34 | rewind(servf); | |
| 5442f2c7 | 35 | _serv_stayopen |= f; |
| 229225cd SL |
36 | } |
| 37 | ||
| 38 | endservent() | |
| 39 | { | |
| 5442f2c7 | 40 | if (servf) { |
| 229225cd SL |
41 | fclose(servf); |
| 42 | servf = NULL; | |
| 43 | } | |
| 5442f2c7 | 44 | _serv_stayopen = 0; |
| 229225cd SL |
45 | } |
| 46 | ||
| 47 | struct servent * | |
| 48 | getservent() | |
| 49 | { | |
| 50 | char *p; | |
| 51 | register char *cp, **q; | |
| 52 | ||
| 53 | if (servf == NULL && (servf = fopen(SERVDB, "r" )) == NULL) | |
| 54 | return (NULL); | |
| 55 | again: | |
| 56 | if ((p = fgets(line, BUFSIZ, servf)) == NULL) | |
| 57 | return (NULL); | |
| 58 | if (*p == '#') | |
| 59 | goto again; | |
| 60 | cp = any(p, "#\n"); | |
| 61 | if (cp == NULL) | |
| 62 | goto again; | |
| 63 | *cp = '\0'; | |
| 64 | serv.s_name = p; | |
| 65 | p = any(p, " \t"); | |
| 66 | if (p == NULL) | |
| 67 | goto again; | |
| 68 | *p++ = '\0'; | |
| 69 | while (*p == ' ' || *p == '\t') | |
| 70 | p++; | |
| 71 | cp = any(p, ",/"); | |
| 72 | if (cp == NULL) | |
| 73 | goto again; | |
| 74 | *cp++ = '\0'; | |
| 62fc8b9c | 75 | serv.s_port = htons((u_short)atoi(p)); |
| 229225cd | 76 | serv.s_proto = cp; |
| 9243aabf | 77 | q = serv.s_aliases = serv_aliases; |
| 229225cd | 78 | cp = any(cp, " \t"); |
| 463dee20 | 79 | if (cp != NULL) |
| 229225cd | 80 | *cp++ = '\0'; |
| 463dee20 SL |
81 | while (cp && *cp) { |
| 82 | if (*cp == ' ' || *cp == '\t') { | |
| 83 | cp++; | |
| 84 | continue; | |
| 229225cd | 85 | } |
| 463dee20 SL |
86 | if (q < &serv_aliases[MAXALIASES - 1]) |
| 87 | *q++ = cp; | |
| 88 | cp = any(cp, " \t"); | |
| 89 | if (cp != NULL) | |
| 90 | *cp++ = '\0'; | |
| 229225cd SL |
91 | } |
| 92 | *q = NULL; | |
| 93 | return (&serv); | |
| 94 | } | |
| 95 | ||
| 96 | static char * | |
| 97 | any(cp, match) | |
| 98 | register char *cp; | |
| 99 | char *match; | |
| 100 | { | |
| 101 | register char *mp, c; | |
| 102 | ||
| 103 | while (c = *cp) { | |
| 104 | for (mp = match; *mp; mp++) | |
| 105 | if (*mp == c) | |
| 106 | return (cp); | |
| 107 | cp++; | |
| 108 | } | |
| 109 | return ((char *)0); | |
| 110 | } |