modules/wh/wh_queries.c
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FUNCTIONS
This source file includes following functions.
- WH_connect
- WH_sock
1 /***************************************
2 $Revision: 1.7 $
3
4 Whois query (wh) - connects to a whois server and returns result
5
6 Status: NOT REVIEWED, TESTED
7
8 Design and implementation by: Marek Bukowy
9
10 Note: still not final. Probably SK calls should be moved to the
11 calling routine
12
13 ******************/ /******************
14 Copyright (c) 1999 RIPE NCC
15
16 All Rights Reserved
17
18 Permission to use, copy, modify, and distribute this software and its
19 documentation for any purpose and without fee is hereby granted,
20 provided that the above copyright notice appear in all copies and that
21 both that copyright notice and this permission notice appear in
22 supporting documentation, and that the name of the author not be
23 used in advertising or publicity pertaining to distribution of the
24 software without specific, written prior permission.
25
26 THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
27 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS; IN NO EVENT SHALL
28 AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
29 DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
30 AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
31 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
32 ***************************************/
33
34 #include <sys/types.h>
35 #include <sys/socket.h>
36 #include <netinet/in.h>
37 #include <netdb.h>
38 #include <stdio.h>
39
40 #include <erroutines.h>
41 #include "socket.h"
42
43 /*+ opens a connection to hostname and queries it,
44 sets sock to the socket number it got for this connection.
45
46 All reading and possibly other queries must be performed by
47 the caller.
48 +*/
49 er_ret_t
50 WH_connect(int *sock, char *hostname, int port)
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51 {
52
53 struct sockaddr_in sin;
54 struct hostent *hp;
55 int s;
56
57 #if 0
58 char log_str[256];
59 sprintf(log_str, "would perform query >%s< to %s:%d \n"
60 "limits: line %d tmout %d and print on socket %d\n",
61 query,hostname,port, maxlines,timeout,sock );
62 log_inst_print(log_str);
63 #endif
64
65 if ( (hp = gethostbyname(hostname)) == NULL) {
66 return WH_BADHOST;
67 }
68
69 s = socket(AF_INET, SOCK_STREAM, 0);
70 if (s < 0) {
71 return WH_SOCKET;
72 }
73
74 bzero((caddr_t)&sin, sizeof (sin));
75 sin.sin_family = hp->h_addrtype;
76 if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
77 close(s);
78 return WH_BIND;
79 }
80 bcopy(hp->h_addr, (char *)&sin.sin_addr, hp->h_length);
81 sin.sin_port=htons(port);
82
83 if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
84 close(s);
85 return WH_CONNECT;
86 }
87
88 /* SK_puts(sock, "% Connection established...\n"); */
89
90 *sock = s;
91
92 return WH_OK;
93 }
94
95
96
97 /*+ opens a whois connection to hostname, queries it and
98 prints result on sock +*/
99 er_ret_t
100 WH_sock(int sock, char *hostname, int port,
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101 char *query, int maxlines, int timeout)
102 {
103 int s;
104 int ch;
105 er_ret_t err;
106
107 if( (err = WH_connect(&s, hostname, port)) != WH_OK ) {
108 return err;
109 }
110 else {
111 #if 1
112 {
113 FILE *sfi;
114 FILE *sfo;
115
116 sfi = fdopen(s, "r");
117 sfo = fdopen(s, "w");
118 if (sfi == NULL || sfo == NULL) {
119 (void)close(s);
120 return WH_OPEN;
121 }
122
123 fprintf(sfo, "%s\r\n", query);
124 fflush(sfo);
125
126 while ((ch = getc(sfi)) != EOF) {
127 SK_putc(sock,ch);
128 }
129
130 fclose(sfo);
131 fclose(sfi);
132 }
133 #else
134 SK_puts(s, query);
135 SK_puts(s, "\r\n");
136
137 while( (ch = SK_getc(s)) != EOF ) {
138 SK_putc(sock,ch);
139 }
140 #endif
141 close(s);
142
143
144
145 return WH_OK;
146 } /* if OK */
147 }
148