2 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
3 * Portions Copyright (c) 1996,1998 by Internet Software Consortium.
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
15 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #if defined(LIBC_SCCS) && !defined(lint)
19 static const char rcsid[] = "$Id: irp_ho.c,v 1.3 2005/04/27 04:56:28 sra Exp $";
20 #endif /* LIBC_SCCS and not lint */
24 #include "port_before.h"
27 #include <sys/types.h>
28 #include <sys/param.h>
29 #include <sys/socket.h>
31 #include <netinet/in.h>
32 #include <arpa/inet.h>
33 #include <arpa/nameser.h>
47 #include <isc/irpmarshall.h>
48 #include <isc/memcluster.h>
54 #include "port_after.h"
60 #define Max(a,b) ((a) > (b) ? (a) : (b))
64 struct irp_p *girpdata;
71 static void ho_close(struct irs_ho *this);
72 static struct hostent * ho_byname(struct irs_ho *this, const char *name);
73 static struct hostent * ho_byname2(struct irs_ho *this, const char *name,
75 static struct hostent * ho_byaddr(struct irs_ho *this, const void *addr,
77 static struct hostent * ho_next(struct irs_ho *this);
78 static void ho_rewind(struct irs_ho *this);
79 static void ho_minimize(struct irs_ho *this);
81 static void free_host(struct hostent *ho);
82 static struct addrinfo * ho_addrinfo(struct irs_ho *this, const char *name,
83 const struct addrinfo *pai);
88 * struct irs_ho * irs_irp_ho(struct irs_acc *this)
92 * Initializes the irp_ho module.
97 irs_irp_ho(struct irs_acc *this) {
101 if (!(ho = memget(sizeof *ho))) {
105 memset(ho, 0x0, sizeof *ho);
107 if (!(pvt = memget(sizeof *pvt))) {
108 memput(ho, sizeof *ho);
112 memset(pvt, 0, sizeof *pvt);
113 pvt->girpdata = this->private;
116 ho->close = ho_close;
117 ho->byname = ho_byname;
118 ho->byname2 = ho_byname2;
119 ho->byaddr = ho_byaddr;
121 ho->rewind = ho_rewind;
122 ho->minimize = ho_minimize;
123 ho->addrinfo = ho_addrinfo;
131 * Closes down the module.
136 ho_close(struct irs_ho *this) {
137 struct pvt *pvt = (struct pvt *)this->private;
141 free_host(&pvt->host);
143 memput(pvt, sizeof *pvt);
144 memput(this, sizeof *this);
150 * struct hostent * ho_byname(struct irs_ho *this, const char *name)
154 static struct hostent *
155 ho_byname(struct irs_ho *this, const char *name) {
156 return (ho_byname2(this, name, AF_INET));
164 * struct hostent * ho_byname2(struct irs_ho *this, const char *name, int af)
168 static struct hostent *
169 ho_byname2(struct irs_ho *this, const char *name, int af) {
170 struct pvt *pvt = (struct pvt *)this->private;
171 struct hostent *ho = &pvt->host;
177 if (ho->h_name != NULL &&
178 strcmp(name, ho->h_name) == 0 &&
179 af == ho->h_addrtype) {
183 if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
187 if (irs_irp_send_command(pvt->girpdata, "gethostbyname2 %s %s",
188 name, ADDR_T_STR(af)) != 0)
191 if (irs_irp_get_full_response(pvt->girpdata, &code,
193 &body, &bodylen) != 0) {
197 if (code == IRPD_GETHOST_OK) {
199 if (irp_unmarshall_ho(ho, body) != 0) {
207 memput(body, bodylen);
216 * struct hostent * ho_byaddr(struct irs_ho *this, const void *addr,
221 static struct hostent *
222 ho_byaddr(struct irs_ho *this, const void *addr, int len, int af) {
223 struct pvt *pvt = (struct pvt *)this->private;
224 struct hostent *ho = &pvt->host;
229 char paddr[MAXPADDRSIZE];
232 if (ho->h_name != NULL &&
233 af == ho->h_addrtype &&
234 len == ho->h_length) {
235 for (p = ho->h_addr_list ; *p != NULL ; p++) {
236 if (memcmp(*p, addr, len) == 0)
241 if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
245 if (inet_ntop(af, addr, paddr, sizeof paddr) == NULL) {
249 if (irs_irp_send_command(pvt->girpdata, "gethostbyaddr %s %s",
250 paddr, ADDR_T_STR(af)) != 0) {
254 if (irs_irp_get_full_response(pvt->girpdata, &code,
256 &body, &bodylen) != 0) {
260 if (code == IRPD_GETHOST_OK) {
262 if (irp_unmarshall_ho(ho, body) != 0) {
270 memput(body, bodylen);
277 * The implementation for gethostent(3). The first time it's
278 * called all the data is pulled from the remote(i.e. what
279 * the maximum number of gethostent(3) calls would return)
280 * and that data is cached.
284 static struct hostent *
285 ho_next(struct irs_ho *this) {
286 struct pvt *pvt = (struct pvt *)this->private;
287 struct hostent *ho = &pvt->host;
293 if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
297 if (irs_irp_send_command(pvt->girpdata, "gethostent") != 0) {
301 if (irs_irp_get_full_response(pvt->girpdata, &code,
303 &body, &bodylen) != 0) {
307 if (code == IRPD_GETHOST_OK) {
309 if (irp_unmarshall_ho(ho, body) != 0) {
317 memput(body, bodylen);
324 * void ho_rewind(struct irs_ho *this)
329 ho_rewind(struct irs_ho *this) {
330 struct pvt *pvt = (struct pvt *)this->private;
334 if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
338 if (irs_irp_send_command(pvt->girpdata, "sethostent") != 0) {
342 code = irs_irp_read_response(pvt->girpdata, text, sizeof text);
343 if (code != IRPD_GETHOST_SETOK) {
344 if (irp_log_errors) {
345 syslog(LOG_WARNING, "sethostent failed: %s", text);
353 * void ho_minimize(struct irs_ho *this)
358 ho_minimize(struct irs_ho *this) {
359 struct pvt *pvt = (struct pvt *)this->private;
361 free_host(&pvt->host);
363 irs_irp_disconnect(pvt->girpdata);
367 * void free_host(struct hostent *ho)
372 free_host(struct hostent *ho) {
379 if (ho->h_name != NULL)
382 if (ho->h_aliases != NULL) {
383 for (p = ho->h_aliases ; *p != NULL ; p++)
388 if (ho->h_addr_list != NULL) {
389 for (p = ho->h_addr_list ; *p != NULL ; p++)
391 free(ho->h_addr_list);
396 static struct addrinfo *
397 ho_addrinfo(struct irs_ho *this, const char *name, const struct addrinfo *pai)