Flatten bind9 vendor work area

1 files changed, 300 insertions, 0 deletions

diff --git a/lib/bind/irs/dns_sv.c b/lib/bind/irs/dns_sv.c
new file mode 100644
index 0000000..fcb25ac
--- /dev/null
+++ b/lib/bind/irs/dns_sv.c
@@ -0,0 +1,300 @@
+/*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1996,1999 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: dns_sv.c,v 1.4.18.1 2005/04/27 05:00:55 sra Exp $";
+#endif
+
+/* Imports */
+
+#include "port_before.h"
+
+#include <sys/types.h>
+#include <netinet/in.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <netdb.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/nameser.h>
+#include <resolv.h>
+
+#include <isc/memcluster.h>
+#include <irs.h>
+
+#include "port_after.h"
+
+#include "irs_p.h"
+#include "hesiod.h"
+#include "dns_p.h"
+
+/* Definitions */
+
+struct pvt {
+	struct dns_p *		dns;
+	struct servent		serv;
+	char *			svbuf;
+	struct __res_state *	res;
+	void			(*free_res)(void *);
+};
+
+/* Forward. */
+
+static void 			sv_close(struct irs_sv *);
+static struct servent *		sv_byname(struct irs_sv *,
+					  const char *, const char *);
+static struct servent *		sv_byport(struct irs_sv *, int, const char *);
+static struct servent *		sv_next(struct irs_sv *);
+static void			sv_rewind(struct irs_sv *);
+static void			sv_minimize(struct irs_sv *);
+#ifdef SV_RES_SETGET
+static struct __res_state *	sv_res_get(struct irs_sv *);
+static void			sv_res_set(struct irs_sv *,
+					   struct __res_state *,
+					   void (*)(void *));
+#endif
+
+static struct servent *		parse_hes_list(struct irs_sv *,
+					       char **, const char *);
+
+/* Public */
+
+struct irs_sv *
+irs_dns_sv(struct irs_acc *this) {
+	struct dns_p *dns = (struct dns_p *)this->private;
+	struct irs_sv *sv;
+	struct pvt *pvt;
+
+	if (!dns || !dns->hes_ctx) {
+		errno = ENODEV;
+		return (NULL);
+	}
+	if (!(pvt = memget(sizeof *pvt))) {
+		errno = ENOMEM;
+		return (NULL);
+	}
+	memset(pvt, 0, sizeof *pvt);
+	pvt->dns = dns;
+	if (!(sv = memget(sizeof *sv))) {
+		memput(pvt, sizeof *pvt);
+		errno = ENOMEM;
+		return (NULL);
+	}
+	memset(sv, 0x5e, sizeof *sv);
+	sv->private = pvt;
+	sv->byname = sv_byname;
+	sv->byport = sv_byport;
+	sv->next = sv_next;
+	sv->rewind = sv_rewind;
+	sv->close = sv_close;
+	sv->minimize = sv_minimize;
+#ifdef SV_RES_SETGET
+	sv->res_get = sv_res_get;
+	sv->res_set = sv_res_set;
+#else
+	sv->res_get = NULL; /*%< sv_res_get; */
+	sv->res_set = NULL; /*%< sv_res_set; */
+#endif
+	return (sv);
+}
+
+/* Methods */
+
+static void
+sv_close(struct irs_sv *this) {
+	struct pvt *pvt = (struct pvt *)this->private;
+
+	if (pvt->serv.s_aliases)
+		free(pvt->serv.s_aliases);
+	if (pvt->svbuf)
+		free(pvt->svbuf);
+
+	if (pvt->res && pvt->free_res)
+		(*pvt->free_res)(pvt->res);
+	memput(pvt, sizeof *pvt);
+	memput(this, sizeof *this);
+}
+
+static struct servent *
+sv_byname(struct irs_sv *this, const char *name, const char *proto) {
+	struct pvt *pvt = (struct pvt *)this->private;
+	struct dns_p *dns = pvt->dns;
+	struct servent *s;
+	char **hes_list;
+
+	if (!(hes_list = hesiod_resolve(dns->hes_ctx, name, "service")))
+		return (NULL);
+
+	s = parse_hes_list(this, hes_list, proto);
+	hesiod_free_list(dns->hes_ctx, hes_list);
+	return (s);
+}
+
+static struct servent *
+sv_byport(struct irs_sv *this, int port, const char *proto) {
+	struct pvt *pvt = (struct pvt *)this->private;
+	struct dns_p *dns = pvt->dns;
+	struct servent *s;
+	char portstr[16];
+	char **hes_list;
+
+	sprintf(portstr, "%d", ntohs(port));
+	if (!(hes_list = hesiod_resolve(dns->hes_ctx, portstr, "port")))
+		return (NULL);
+	
+	s = parse_hes_list(this, hes_list, proto);
+	hesiod_free_list(dns->hes_ctx, hes_list);
+	return (s);
+}
+
+static struct servent *
+sv_next(struct irs_sv *this) {
+	UNUSED(this);
+	errno = ENODEV;
+	return (NULL);
+}
+
+static void
+sv_rewind(struct irs_sv *this) {
+	UNUSED(this);
+	/* NOOP */
+}
+
+/* Private */
+
+static struct servent *
+parse_hes_list(struct irs_sv *this, char **hes_list, const char *proto) {
+	struct pvt *pvt = (struct pvt *)this->private;
+	char *p, *cp, **cpp, **new;
+	int proto_len;
+	int num = 0;
+	int max = 0;
+	
+	for (cpp = hes_list; *cpp; cpp++) {
+		cp = *cpp;
+
+		/* Strip away comments, if any. */
+		if ((p = strchr(cp, '#')))
+			*p = 0;
+
+		/* Check to make sure the protocol matches. */
+		p = cp;
+		while (*p && !isspace((unsigned char)*p))
+			p++;
+		if (!*p)
+			continue;
+		if (proto) {
+		     proto_len = strlen(proto);
+		     if (strncasecmp(++p, proto, proto_len) != 0)
+			  continue;
+		     if (p[proto_len] && !isspace(p[proto_len]&0xff))
+			  continue;
+		}
+		/* OK, we've got a live one.  Let's parse it for real. */
+		if (pvt->svbuf)
+			free(pvt->svbuf);
+		pvt->svbuf = strdup(cp);
+
+		p = pvt->svbuf;
+		pvt->serv.s_name = p;
+		while (*p && !isspace(*p&0xff))
+			p++;
+		if (!*p)
+			continue;
+		*p++ = '\0';
+
+		pvt->serv.s_proto = p;
+		while (*p && !isspace(*p&0xff))
+			p++;
+		if (!*p)
+			continue;
+		*p++ = '\0';
+
+		pvt->serv.s_port = htons((u_short) atoi(p));
+		while (*p && !isspace(*p&0xff))
+			p++;
+		if (*p)
+			*p++ = '\0';
+
+		while (*p) {
+			if ((num + 1) >= max || !pvt->serv.s_aliases) {
+				max += 10;
+				new = realloc(pvt->serv.s_aliases,
+					      max * sizeof(char *));
+				if (!new) {
+					errno = ENOMEM;
+					goto cleanup;
+				}
+				pvt->serv.s_aliases = new;
+			}
+			pvt->serv.s_aliases[num++] = p;
+			while (*p && !isspace(*p&0xff))
+				p++;
+			if (*p)
+				*p++ = '\0';
+		}
+		if (!pvt->serv.s_aliases)
+			pvt->serv.s_aliases = malloc(sizeof(char *));
+		if (!pvt->serv.s_aliases)
+			goto cleanup;
+		pvt->serv.s_aliases[num] = NULL;
+		return (&pvt->serv);
+	}
+	
+ cleanup:
+	if (pvt->serv.s_aliases) {
+		free(pvt->serv.s_aliases);
+		pvt->serv.s_aliases = NULL;
+	}
+	if (pvt->svbuf) {
+		free(pvt->svbuf);
+		pvt->svbuf = NULL;
+	}
+	return (NULL);
+}
+
+static void
+sv_minimize(struct irs_sv *this) {
+	UNUSED(this);
+	/* NOOP */
+}
+
+#ifdef SV_RES_SETGET
+static struct __res_state *
+sv_res_get(struct irs_sv *this) {
+	struct pvt *pvt = (struct pvt *)this->private;
+	struct dns_p *dns = pvt->dns;
+
+	return (__hesiod_res_get(dns->hes_ctx));
+}
+
+static void
+sv_res_set(struct irs_sv *this, struct __res_state * res,
+	   void (*free_res)(void *)) {
+	struct pvt *pvt = (struct pvt *)this->private;
+	struct dns_p *dns = pvt->dns;
+
+	__hesiod_res_set(dns->hes_ctx, res, free_res);
+}
+#endif
+
+/*! \file */