1 files changed, 286 insertions, 0 deletions
diff --git a/usr.sbin/nscd/agents/services.c b/usr.sbin/nscd/agents/services.c
new file mode 100644
index 0000000..3683396
--- /dev/null
+++ b/usr.sbin/nscd/agents/services.c
@@ -0,0 +1,286 @@
+/*-
+ * Copyright (c) 2005 Michael Bushkov <bushman@rsu.ru>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <assert.h>
+#include <nsswitch.h>
+#include <netdb.h>
+#include <string.h>
+#include <stdlib.h>
+#include "../debug.h"
+#include "services.h"
+
+static int services_marshal_func(struct servent *, char *, size_t *);
+static int services_lookup_func(const char *, size_t, char **, size_t *);
+static void *services_mp_init_func();
+static int services_mp_lookup_func(char **, size_t *, void *);
+static void services_mp_destroy_func(void *);
+
+static int
+services_marshal_func(struct servent *serv, char *buffer, size_t *buffer_size)
+{
+	struct servent	new_serv;
+	size_t	desired_size;
+	char	**alias;
+	char	*p;
+	size_t	size;
+	size_t	aliases_size;
+
+	TRACE_IN(services_marshal_func);
+	desired_size = ALIGNBYTES + sizeof(struct servent) + sizeof(char *);
+	if (serv->s_name != NULL)
+		desired_size += strlen(serv->s_name) + 1;
+	if (serv->s_proto != NULL)
+		desired_size += strlen(serv->s_proto) + 1;
+
+	aliases_size = 0;
+	if (serv->s_aliases != NULL) {
+		for (alias = serv->s_aliases; *alias; ++alias) {
+			desired_size += strlen(*alias) + 1;
+			++aliases_size;
+		}
+
+		desired_size += ALIGNBYTES + sizeof(char *) *
+		    (aliases_size + 1);
+	}
+
+	if ((*buffer_size < desired_size) || (buffer == NULL)) {
+		*buffer_size = desired_size;
+		TRACE_OUT(services_marshal_func);
+		return (NS_RETURN);
+	}
+
+	memcpy(&new_serv, serv, sizeof(struct servent));
+	memset(buffer, 0, desired_size);
+
+	*buffer_size = desired_size;
+	p = buffer + sizeof(struct servent) + sizeof(char *);
+	memcpy(buffer + sizeof(struct servent), &p, sizeof(char *));
+	p = (char *)ALIGN(p);
+
+	if (new_serv.s_name != NULL) {
+		size = strlen(new_serv.s_name);
+		memcpy(p, new_serv.s_name, size);
+		new_serv.s_name = p;
+		p += size + 1;
+	}
+
+	if (new_serv.s_proto != NULL) {
+		size = strlen(new_serv.s_proto);
+		memcpy(p, new_serv.s_proto, size);
+		new_serv.s_proto = p;
+		p += size + 1;
+	}
+
+	if (new_serv.s_aliases != NULL) {
+		p = (char *)ALIGN(p);
+		memcpy(p, new_serv.s_aliases, sizeof(char *) * aliases_size);
+		new_serv.s_aliases = (char **)p;
+		p += sizeof(char *) * (aliases_size + 1);
+
+		for (alias = new_serv.s_aliases; *alias; ++alias) {
+			size = strlen(*alias);
+			memcpy(p, *alias, size);
+			*alias = p;
+			p += size + 1;
+		}
+	}
+
+	memcpy(buffer, &new_serv, sizeof(struct servent));
+	TRACE_OUT(services_marshal_func);
+	return (NS_SUCCESS);
+}
+
+static int
+services_lookup_func(const char *key, size_t key_size, char **buffer,
+	size_t *buffer_size)
+{
+	enum nss_lookup_type lookup_type;
+	char	*name = NULL;
+	char	*proto = NULL;
+	size_t	size, size2;
+	int	port;
+
+	struct servent *result;
+
+	TRACE_IN(services_lookup_func);
+
+	assert(buffer != NULL);
+	assert(buffer_size != NULL);
+
+	if (key_size < sizeof(enum nss_lookup_type)) {
+		TRACE_OUT(passwd_lookup_func);
+		return (NS_UNAVAIL);
+	}
+	memcpy(&lookup_type, key, sizeof(enum nss_lookup_type));
+
+	switch (lookup_type) {
+	case nss_lt_name:
+		size = key_size - sizeof(enum nss_lookup_type)	+ 1;
+		name = (char *)malloc(size);
+		assert(name != NULL);
+		memset(name, 0, size);
+		memcpy(name, key + sizeof(enum nss_lookup_type), size - 1);
+
+		size2 = strlen(name) + 1;
+		if (size2 < size) {
+			proto = strchr(name, '\0');
+			if (strrchr(name, '\0') > proto)
+				++proto ;
+			else
+				proto = NULL;
+		}
+		break;
+	case nss_lt_id:
+		if (key_size < sizeof(enum nss_lookup_type) +
+			sizeof(int)) {
+			TRACE_OUT(passwd_lookup_func);
+			return (NS_UNAVAIL);
+		}
+
+		memcpy(&port, key + sizeof(enum nss_lookup_type),
+			sizeof(int));
+
+		size = key_size - sizeof(enum nss_lookup_type) + sizeof(int);
+		if (size > 0) {
+			proto = (char *)malloc(size + 1);
+			assert(proto != NULL);
+			memset(proto, size + 1, 0);
+			memcpy(proto, key + sizeof(enum nss_lookup_type) +
+				sizeof(int), size);
+		}
+		break;
+	default:
+		TRACE_OUT(passwd_lookup_func);
+		return (NS_UNAVAIL);
+	}
+
+	switch (lookup_type) {
+	case nss_lt_name:
+		result = getservbyname(name, proto);
+		free(name);
+		break;
+	case nss_lt_id:
+		result = getservbyport(port, proto);
+		free(proto);
+		break;
+	default:
+		/* SHOULD NOT BE REACHED */
+		break;
+	}
+
+	if (result != NULL) {
+		services_marshal_func(result, NULL, buffer_size);
+		*buffer = (char *)malloc(*buffer_size);
+		assert(*buffer != NULL);
+		services_marshal_func(result, *buffer, buffer_size);
+	}
+
+	TRACE_OUT(services_lookup_func);
+	return (result == NULL ? NS_NOTFOUND : NS_SUCCESS);
+}
+
+static void *
+services_mp_init_func()
+{
+	TRACE_IN(services_mp_init_func);
+	setservent(0);
+	TRACE_OUT(services_mp_init_func);
+
+	return (NULL);
+}
+
+static int
+services_mp_lookup_func(char **buffer, size_t *buffer_size, void *mdata)
+{
+	struct servent *result;
+
+	TRACE_IN(services_mp_lookup_func);
+	result = getservent();
+	if (result != NULL) {
+		services_marshal_func(result, NULL, buffer_size);
+		*buffer = (char *)malloc(*buffer_size);
+		assert(*buffer != NULL);
+		services_marshal_func(result, *buffer, buffer_size);
+	}
+
+	TRACE_OUT(services_mp_lookup_func);
+	return (result == NULL ? NS_NOTFOUND : NS_SUCCESS);
+}
+
+static void
+services_mp_destroy_func(void *mdata)
+{
+	TRACE_IN(services_mp_destroy_func);
+	TRACE_OUT(services_mp_destroy_func);
+}
+
+struct agent *
+init_services_agent()
+{
+	struct common_agent	*retval;
+	TRACE_IN(init_services_agent);
+
+	retval = (struct common_agent *)malloc(sizeof(struct common_agent));
+	assert(retval != NULL);
+	memset(retval, 0, sizeof(struct common_agent));
+
+	retval->parent.name = strdup("services");
+	assert(retval->parent.name != NULL);
+
+	retval->parent.type = COMMON_AGENT;
+	retval->lookup_func = services_lookup_func;
+
+	TRACE_OUT(init_services_agent);
+	return ((struct agent *)retval);
+}
+
+struct agent *
+init_services_mp_agent()
+{
+	struct multipart_agent	*retval;
+
+	TRACE_IN(init_services_mp_agent);
+	retval = (struct multipart_agent *)malloc(
+		sizeof(struct multipart_agent));
+	assert(retval != NULL);
+	memset(retval, 0, sizeof(struct multipart_agent));
+
+	retval->parent.name = strdup("services");
+	retval->parent.type = MULTIPART_AGENT;
+	retval->mp_init_func = services_mp_init_func;
+	retval->mp_lookup_func = services_mp_lookup_func;
+	retval->mp_destroy_func = services_mp_destroy_func;
+	assert(retval->parent.name != NULL);
+
+	TRACE_OUT(init_services_mp_agent);
+	return ((struct agent *)retval);
+}