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1.1 root 1: /*
2: *******************************************************************************
3: *
4: * res.h --
5: *
6: * Definitions used by modules of the name server
7: * lookup program.
8: *
9: * Copyright (c) 1985
10: * Andrew Cherenson
11: * CS298-26 Fall 1985
12: *
13: * Copyright (c) 1985 Regents of the University of California.
14: * All rights reserved. The Berkeley software License Agreement
15: * specifies the terms and conditions for redistribution.
16: *
17: * @(#)res.h 5.1 (Berkeley) 11/29/85
18: *
19: *******************************************************************************
20: */
21:
22:
23: #define TRUE 1
24: #define FALSE 0
25:
26: /*
27: * Define return statuses in addtion to the ones defined in namserv.h
28: * let SUCCESS be a synonym for NOERROR
29: *
30: * TIME_OUT - a socket connection timed out.
31: * NO_INFO - the server didn't find any info about the host.
32: * ERROR - one of the following types of errors:
33: * dn_expand, res_mkquery failed
34: * bad command line, socket operation failed, etc.
35: * NONAUTH - the server didn't have the desired info but
36: * returned the name(s) of some servers who should.
37: *
38: */
39:
40: #define SUCCESS 0
41: #define TIME_OUT -1
42: #define NO_INFO -2
43: #define ERROR -3
44: #define NONAUTH -4
45:
46: /*
47: * Define additional options for the resolver state structure.
48: *
49: * RES_DEBUG2 more verbose debug level
50: */
51:
52: #define RES_DEBUG2 0x80000000
53:
54: /*
55: * Maximum length of server, host and file names.
56: */
57:
58: #define NAME_LEN 80
59:
60:
61: /*
62: * Modified struct hostent from <netdb.h>
63: *
64: * "Structures returned by network data base library. All addresses
65: * are supplied in host order, and returned in network order (suitable
66: * for use in system calls)."
67: */
68:
69: typedef struct {
70: char *name; /* official name of host */
71: char **domains; /* domains it serves */
72: char **addrList; /* list of addresses from name server */
73: } ServerInfo;
74:
75: typedef struct {
76: char *name; /* official name of host */
77: char **aliases; /* alias list */
78: char **addrList; /* list of addresses from name server */
79: int addrType; /* host address type */
80: int addrLen; /* length of address */
81: ServerInfo **servers;
82: } HostInfo;
83:
84:
85: /*
86: * SockFD is the file descriptor for sockets used to connect with
87: * the name servers. It is global so the Control-C handler can close
88: * it. Likewise for filePtr, which is used for directing listings
89: * to a file.
90: */
91:
92: extern int sockFD;
93: extern FILE *filePtr;
94:
95:
96: /*
97: * External routines:
98: */
99:
100: extern int Print_query();
101: extern char *Print_cdname();
102: extern char *Print_cdname2(); /* fixed width */
103: extern char *Print_rr();
104: extern char *DecodeType(); /* descriptive version of p_type */
105: extern char *DecodeError();
106: extern char *Calloc();
107: extern void PrintServer();
108: extern void PrintHostInfo();
109: extern void ShowOptions();
110: extern void FreeHostInfoPtr();
111: extern FILE *OpenFile();
112: extern char *inet_ntoa();
113: extern char *res_skip();
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