421 lines
7.7 KiB
C
421 lines
7.7 KiB
C
/* $NetBSD: irp_ho.c,v 1.1.1.1 1999/11/20 18:54:09 veego Exp $ */
|
|
|
|
/*
|
|
* Portions Copyright (c) 1996,1998 by Internet Software Consortium.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
|
|
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
|
|
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
|
|
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
|
|
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
|
|
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static const char rcsid[] = "Id: irp_ho.c,v 8.2 1999/10/13 16:39:31 vixie Exp";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
/* Imports. */
|
|
|
|
#include "port_before.h"
|
|
|
|
#include <syslog.h>
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <arpa/nameser.h>
|
|
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <netdb.h>
|
|
#include <resolv.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <syslog.h>
|
|
|
|
#include <irs.h>
|
|
#include <irp.h>
|
|
#include <isc/irpmarshall.h>
|
|
#include <isc/memcluster.h>
|
|
|
|
#include "irs_p.h"
|
|
#include "dns_p.h"
|
|
#include "irp_p.h"
|
|
|
|
#include "port_after.h"
|
|
|
|
/* Definitions. */
|
|
|
|
#define MAXALIASES 35
|
|
#define MAXADDRS 35
|
|
#define Max(a,b) ((a) > (b) ? (a) : (b))
|
|
|
|
|
|
struct pvt {
|
|
struct irp_p *girpdata;
|
|
int warned;
|
|
struct hostent host;
|
|
};
|
|
|
|
/* Forward. */
|
|
|
|
static void ho_close(struct irs_ho *this);
|
|
static struct hostent * ho_byname(struct irs_ho *this, const char *name);
|
|
static struct hostent * ho_byname2(struct irs_ho *this, const char *name,
|
|
int af);
|
|
static struct hostent * ho_byaddr(struct irs_ho *this, const void *addr,
|
|
int len, int af);
|
|
static struct hostent * ho_next(struct irs_ho *this);
|
|
static void ho_rewind(struct irs_ho *this);
|
|
static void ho_minimize(struct irs_ho *this);
|
|
|
|
static void free_host(struct hostent *ho);
|
|
|
|
|
|
/* Public. */
|
|
|
|
|
|
|
|
/*
|
|
* struct irs_ho * irs_irp_ho(struct irs_acc *this)
|
|
*
|
|
* Notes:
|
|
*
|
|
* Initializes the irp_ho module.
|
|
*
|
|
*/
|
|
|
|
struct irs_ho *
|
|
irs_irp_ho(struct irs_acc *this) {
|
|
struct irs_ho *ho;
|
|
struct pvt *pvt;
|
|
|
|
if (!(ho = memget(sizeof *ho))) {
|
|
errno = ENOMEM;
|
|
return (NULL);
|
|
}
|
|
memset(ho, 0x0, sizeof *ho);
|
|
|
|
if (!(pvt = memget(sizeof *pvt))) {
|
|
memput(ho, sizeof *ho);
|
|
errno = ENOMEM;
|
|
return (NULL);
|
|
}
|
|
memset(pvt, 0, sizeof *pvt);
|
|
pvt->girpdata = this->private;
|
|
|
|
ho->private = pvt;
|
|
ho->close = ho_close;
|
|
ho->byname = ho_byname;
|
|
ho->byname2 = ho_byname2;
|
|
ho->byaddr = ho_byaddr;
|
|
ho->next = ho_next;
|
|
ho->rewind = ho_rewind;
|
|
ho->minimize = ho_minimize;
|
|
|
|
return (ho);
|
|
}
|
|
|
|
/* Methods. */
|
|
|
|
|
|
|
|
/*
|
|
* void ho_close(struct irs_ho *this)
|
|
*
|
|
* Notes:
|
|
*
|
|
* Closes down the module.
|
|
*
|
|
*/
|
|
|
|
static void
|
|
ho_close(struct irs_ho *this) {
|
|
struct pvt *pvt = (struct pvt *)this->private;
|
|
|
|
ho_minimize(this);
|
|
|
|
free_host(&pvt->host);
|
|
|
|
memput(pvt, sizeof *pvt);
|
|
memput(this, sizeof *this);
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* struct hostent * ho_byname(struct irs_ho *this, const char *name)
|
|
*
|
|
*/
|
|
|
|
static struct hostent *
|
|
ho_byname(struct irs_ho *this, const char *name) {
|
|
return (ho_byname2(this, name, AF_INET));
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
* struct hostent * ho_byname2(struct irs_ho *this, const char *name, int af)
|
|
*
|
|
*/
|
|
|
|
static struct hostent *
|
|
ho_byname2(struct irs_ho *this, const char *name, int af) {
|
|
struct pvt *pvt = (struct pvt *)this->private;
|
|
struct hostent *ho = &pvt->host;
|
|
char *body = NULL;
|
|
size_t bodylen;
|
|
int code;
|
|
char text[256];
|
|
|
|
if (ho->h_name != NULL &&
|
|
strcmp(name, ho->h_name) == 0 &&
|
|
af == ho->h_addrtype) {
|
|
return (ho);
|
|
}
|
|
|
|
if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
|
|
return (NULL);
|
|
}
|
|
|
|
if (irs_irp_send_command(pvt->girpdata, "gethostbyname2 %s %s",
|
|
name, ADDR_T_STR(af)) != 0)
|
|
return (NULL);
|
|
|
|
if (irs_irp_get_full_response(pvt->girpdata, &code,
|
|
text, sizeof text,
|
|
&body, &bodylen) != 0) {
|
|
return (NULL);
|
|
}
|
|
|
|
if (code == IRPD_GETHOST_OK) {
|
|
free_host(ho);
|
|
if (irp_unmarshall_ho(ho, body) != 0) {
|
|
ho = NULL;
|
|
}
|
|
} else {
|
|
ho = NULL;
|
|
}
|
|
|
|
if (body != NULL) {
|
|
memput(body, bodylen);
|
|
}
|
|
|
|
return (ho);
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* struct hostent * ho_byaddr(struct irs_ho *this, const void *addr,
|
|
* int len, int af)
|
|
*
|
|
*/
|
|
|
|
static struct hostent *
|
|
ho_byaddr(struct irs_ho *this, const void *addr, int len, int af) {
|
|
struct pvt *pvt = (struct pvt *)this->private;
|
|
struct hostent *ho = &pvt->host;
|
|
char *body = NULL;
|
|
size_t bodylen;
|
|
int code;
|
|
char **p;
|
|
char paddr[MAXPADDRSIZE];
|
|
char text[256];
|
|
|
|
if (ho->h_name != NULL &&
|
|
af == ho->h_addrtype &&
|
|
len == ho->h_length) {
|
|
for (p = ho->h_addr_list ; *p != NULL ; p++) {
|
|
if (memcmp(*p, addr, len) == 0)
|
|
return (ho);
|
|
}
|
|
}
|
|
|
|
if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
|
|
return (NULL);
|
|
}
|
|
|
|
if (inet_ntop(af, addr, paddr, sizeof paddr) == NULL) {
|
|
return (NULL);
|
|
}
|
|
|
|
if (irs_irp_send_command(pvt->girpdata, "gethostbyaddr %s %s",
|
|
paddr, ADDR_T_STR(af)) != 0) {
|
|
return (NULL);
|
|
}
|
|
|
|
if (irs_irp_get_full_response(pvt->girpdata, &code,
|
|
text, sizeof text,
|
|
&body, &bodylen) != 0) {
|
|
return (NULL);
|
|
}
|
|
|
|
if (code == IRPD_GETHOST_OK) {
|
|
free_host(ho);
|
|
if (irp_unmarshall_ho(ho, body) != 0) {
|
|
ho = NULL;
|
|
}
|
|
} else {
|
|
ho = NULL;
|
|
}
|
|
|
|
if (body != NULL) {
|
|
memput(body, bodylen);
|
|
}
|
|
|
|
return (ho);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
* struct hostent * ho_next(struct irs_ho *this)
|
|
*
|
|
* Notes:
|
|
*
|
|
* The implementation for gethostent(3). The first time it's
|
|
* called all the data is pulled from the remote(i.e. what
|
|
* the maximum number of gethostent(3) calls would return)
|
|
* and that data is cached.
|
|
*
|
|
*/
|
|
|
|
static struct hostent *
|
|
ho_next(struct irs_ho *this) {
|
|
struct pvt *pvt = (struct pvt *)this->private;
|
|
struct hostent *ho = &pvt->host;
|
|
char *body;
|
|
size_t bodylen;
|
|
int code;
|
|
char text[256];
|
|
|
|
if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
|
|
return (NULL);
|
|
}
|
|
|
|
if (irs_irp_send_command(pvt->girpdata, "gethostent") != 0) {
|
|
return (NULL);
|
|
}
|
|
|
|
if (irs_irp_get_full_response(pvt->girpdata, &code,
|
|
text, sizeof text,
|
|
&body, &bodylen) != 0) {
|
|
return (NULL);
|
|
}
|
|
|
|
if (code == IRPD_GETHOST_OK) {
|
|
free_host(ho);
|
|
if (irp_unmarshall_ho(ho, body) != 0) {
|
|
ho = NULL;
|
|
}
|
|
} else {
|
|
ho = NULL;
|
|
}
|
|
|
|
if (body != NULL) {
|
|
memput(body, bodylen);
|
|
}
|
|
|
|
return (ho);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
* void ho_rewind(struct irs_ho *this)
|
|
*
|
|
*/
|
|
|
|
static void
|
|
ho_rewind(struct irs_ho *this) {
|
|
struct pvt *pvt = (struct pvt *)this->private;
|
|
char text[256];
|
|
int code;
|
|
|
|
if (irs_irp_connection_setup(pvt->girpdata, &pvt->warned) != 0) {
|
|
return;
|
|
}
|
|
|
|
if (irs_irp_send_command(pvt->girpdata, "sethostent") != 0) {
|
|
return;
|
|
}
|
|
|
|
code = irs_irp_read_response(pvt->girpdata, text, sizeof text);
|
|
if (code != IRPD_GETHOST_SETOK) {
|
|
if (irp_log_errors) {
|
|
syslog(LOG_WARNING, "sethostent failed: %s", text);
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
* void ho_minimize(struct irs_ho *this)
|
|
*
|
|
*/
|
|
|
|
static void
|
|
ho_minimize(struct irs_ho *this) {
|
|
struct pvt *pvt = (struct pvt *)this->private;
|
|
|
|
free_host(&pvt->host);
|
|
|
|
irs_irp_disconnect(pvt->girpdata);
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
* void free_host(struct hostent *ho)
|
|
*
|
|
*/
|
|
|
|
static void
|
|
free_host(struct hostent *ho) {
|
|
char **p;
|
|
|
|
if (ho == NULL) {
|
|
return;
|
|
}
|
|
|
|
if (ho->h_name != NULL)
|
|
free(ho->h_name);
|
|
|
|
if (ho->h_aliases != NULL) {
|
|
for (p = ho->h_aliases ; *p != NULL ; p++)
|
|
free(*p);
|
|
free(ho->h_aliases);
|
|
}
|
|
|
|
if (ho->h_addr_list != NULL) {
|
|
for (p = ho->h_addr_list ; *p != NULL ; p++)
|
|
free(*p);
|
|
free(ho->h_addr_list);
|
|
}
|
|
}
|
|
|