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-rw-r--r--lib/bind/irs/irp_ho.c405
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diff --git a/lib/bind/irs/irp_ho.c b/lib/bind/irs/irp_ho.c
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+++ b/lib/bind/irs/irp_ho.c
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+/*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * 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 ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC 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 1.2.18.1 2005/04/27 05:01:00 sra 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);
+static struct addrinfo * ho_addrinfo(struct irs_ho *this, const char *name,
+ const struct addrinfo *pai);
+
+/* 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;
+ ho->addrinfo = ho_addrinfo;
+
+ return (ho);
+}
+
+/* Methods. */
+
+/*%
+ * 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);
+}
+
+/*%
+ * 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);
+ }
+}
+
+/* dummy */
+static struct addrinfo *
+ho_addrinfo(struct irs_ho *this, const char *name, const struct addrinfo *pai)
+{
+ UNUSED(this);
+ UNUSED(name);
+ UNUSED(pai);
+ return(NULL);
+}
+
+/*! \file */
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