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 DS |
7 | #if defined(LIBC_SCCS) && !defined(lint) |
8 | static char sccsid[] = "@(#)getprotoent.c 5.2 (Berkeley) %G%"; | |
9 | #endif LIBC_SCCS and not lint | |
eef09c7b SL |
10 | |
11 | #include <stdio.h> | |
1a58f155 | 12 | #include <sys/types.h> |
eef09c7b SL |
13 | #include <sys/socket.h> |
14 | #include <netdb.h> | |
15 | #include <ctype.h> | |
16 | ||
17 | #define MAXALIASES 35 | |
18 | ||
62fc8b9c | 19 | static char PROTODB[] = "/etc/protocols"; |
eef09c7b SL |
20 | static FILE *protof = NULL; |
21 | static char line[BUFSIZ+1]; | |
22 | static struct protoent proto; | |
23 | static char *proto_aliases[MAXALIASES]; | |
24 | static int stayopen = 0; | |
eef09c7b SL |
25 | static char *any(); |
26 | ||
27 | setprotoent(f) | |
28 | int f; | |
29 | { | |
30 | if (protof == NULL) | |
31 | protof = fopen(PROTODB, "r" ); | |
32 | else | |
33 | rewind(protof); | |
34 | stayopen |= f; | |
35 | } | |
36 | ||
37 | endprotoent() | |
38 | { | |
39 | if (protof && !stayopen) { | |
40 | fclose(protof); | |
41 | protof = NULL; | |
42 | } | |
43 | } | |
44 | ||
45 | struct protoent * | |
46 | getprotoent() | |
47 | { | |
48 | char *p; | |
49 | register char *cp, **q; | |
50 | ||
51 | if (protof == NULL && (protof = fopen(PROTODB, "r" )) == NULL) | |
52 | return (NULL); | |
53 | again: | |
54 | if ((p = fgets(line, BUFSIZ, protof)) == NULL) | |
55 | return (NULL); | |
56 | if (*p == '#') | |
57 | goto again; | |
58 | cp = any(p, "#\n"); | |
59 | if (cp == NULL) | |
60 | goto again; | |
61 | *cp = '\0'; | |
62 | proto.p_name = p; | |
63 | cp = any(p, " \t"); | |
64 | if (cp == NULL) | |
65 | goto again; | |
66 | *cp++ = '\0'; | |
67 | while (*cp == ' ' || *cp == '\t') | |
68 | cp++; | |
69 | p = any(cp, " \t"); | |
70 | if (p != NULL) | |
71 | *p++ = '\0'; | |
72 | proto.p_proto = atoi(cp); | |
9243aabf SL |
73 | q = proto.p_aliases = proto_aliases; |
74 | if (p != NULL) { | |
75 | cp = p; | |
463dee20 | 76 | while (cp && *cp) { |
9243aabf SL |
77 | if (*cp == ' ' || *cp == '\t') { |
78 | cp++; | |
79 | continue; | |
80 | } | |
81 | if (q < &proto_aliases[MAXALIASES - 1]) | |
82 | *q++ = cp; | |
83 | cp = any(cp, " \t"); | |
463dee20 | 84 | if (cp != NULL) |
9243aabf | 85 | *cp++ = '\0'; |
eef09c7b | 86 | } |
eef09c7b SL |
87 | } |
88 | *q = NULL; | |
89 | return (&proto); | |
90 | } | |
91 | ||
92 | static char * | |
93 | any(cp, match) | |
94 | register char *cp; | |
95 | char *match; | |
96 | { | |
97 | register char *mp, c; | |
98 | ||
99 | while (c = *cp) { | |
100 | for (mp = match; *mp; mp++) | |
101 | if (*mp == c) | |
102 | return (cp); | |
103 | cp++; | |
104 | } | |
105 | return ((char *)0); | |
106 | } |