projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 8ea4199d DF |
1 | /* |
| 2 | * Copyright (c) 1983 Regents of the University of California. | |
| 6b2f9dd0 KB |
3 | * All rights reserved. |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms are permitted | |
| 6 | * provided that this notice is preserved and that due credit is given | |
| 7 | * to the University of California at Berkeley. The name of the University | |
| 8 | * may not be used to endorse or promote products derived from this | |
| 9 | * software without specific prior written permission. This software | |
| 10 | * is provided ``as is'' without express or implied warranty. | |
| 8ea4199d DF |
11 | */ |
| 12 | ||
| 2ce81398 | 13 | #if defined(LIBC_SCCS) && !defined(lint) |
| 6b2f9dd0 KB |
14 | static char sccsid[] = "@(#)getservent.c 5.5 (Berkeley) %G%"; |
| 15 | #endif /* LIBC_SCCS and not lint */ | |
| 229225cd SL |
16 | |
| 17 | #include <stdio.h> | |
| 4533a593 | 18 | #include <sys/param.h> |
| 62fc8b9c | 19 | #include <sys/types.h> |
| 229225cd SL |
20 | #include <sys/socket.h> |
| 21 | #include <netdb.h> | |
| 22 | #include <ctype.h> | |
| 23 | ||
| 24 | #define MAXALIASES 35 | |
| 25 | ||
| 62fc8b9c | 26 | static char SERVDB[] = "/etc/services"; |
| 229225cd SL |
27 | static FILE *servf = NULL; |
| 28 | static char line[BUFSIZ+1]; | |
| 29 | static struct servent serv; | |
| 30 | static char *serv_aliases[MAXALIASES]; | |
| 229225cd | 31 | static char *any(); |
| 5442f2c7 | 32 | int _serv_stayopen; |
| 229225cd SL |
33 | |
| 34 | setservent(f) | |
| 35 | int f; | |
| 36 | { | |
| 37 | if (servf == NULL) | |
| 38 | servf = fopen(SERVDB, "r" ); | |
| 39 | else | |
| 40 | rewind(servf); | |
| 5442f2c7 | 41 | _serv_stayopen |= f; |
| 229225cd SL |
42 | } |
| 43 | ||
| 44 | endservent() | |
| 45 | { | |
| 5442f2c7 | 46 | if (servf) { |
| 229225cd SL |
47 | fclose(servf); |
| 48 | servf = NULL; | |
| 49 | } | |
| 5442f2c7 | 50 | _serv_stayopen = 0; |
| 229225cd SL |
51 | } |
| 52 | ||
| 53 | struct servent * | |
| 54 | getservent() | |
| 55 | { | |
| 56 | char *p; | |
| 57 | register char *cp, **q; | |
| 58 | ||
| 59 | if (servf == NULL && (servf = fopen(SERVDB, "r" )) == NULL) | |
| 60 | return (NULL); | |
| 61 | again: | |
| 62 | if ((p = fgets(line, BUFSIZ, servf)) == NULL) | |
| 63 | return (NULL); | |
| 64 | if (*p == '#') | |
| 65 | goto again; | |
| 66 | cp = any(p, "#\n"); | |
| 67 | if (cp == NULL) | |
| 68 | goto again; | |
| 69 | *cp = '\0'; | |
| 70 | serv.s_name = p; | |
| 71 | p = any(p, " \t"); | |
| 72 | if (p == NULL) | |
| 73 | goto again; | |
| 74 | *p++ = '\0'; | |
| 75 | while (*p == ' ' || *p == '\t') | |
| 76 | p++; | |
| 77 | cp = any(p, ",/"); | |
| 78 | if (cp == NULL) | |
| 79 | goto again; | |
| 80 | *cp++ = '\0'; | |
| 62fc8b9c | 81 | serv.s_port = htons((u_short)atoi(p)); |
| 229225cd | 82 | serv.s_proto = cp; |
| 9243aabf | 83 | q = serv.s_aliases = serv_aliases; |
| 229225cd | 84 | cp = any(cp, " \t"); |
| 463dee20 | 85 | if (cp != NULL) |
| 229225cd | 86 | *cp++ = '\0'; |
| 463dee20 SL |
87 | while (cp && *cp) { |
| 88 | if (*cp == ' ' || *cp == '\t') { | |
| 89 | cp++; | |
| 90 | continue; | |
| 229225cd | 91 | } |
| 463dee20 SL |
92 | if (q < &serv_aliases[MAXALIASES - 1]) |
| 93 | *q++ = cp; | |
| 94 | cp = any(cp, " \t"); | |
| 95 | if (cp != NULL) | |
| 96 | *cp++ = '\0'; | |
| 229225cd SL |
97 | } |
| 98 | *q = NULL; | |
| 99 | return (&serv); | |
| 100 | } | |
| 101 | ||
| 102 | static char * | |
| 103 | any(cp, match) | |
| 104 | register char *cp; | |
| 105 | char *match; | |
| 106 | { | |
| 107 | register char *mp, c; | |
| 108 | ||
| 109 | while (c = *cp) { | |
| 110 | for (mp = match; *mp; mp++) | |
| 111 | if (*mp == c) | |
| 112 | return (cp); | |
| 113 | cp++; | |
| 114 | } | |
| 115 | return ((char *)0); | |
| 116 | } |