Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 436 insertions, 0 deletions

diff --git a/source4/lib/socket/socket_unix.c b/source4/lib/socket/socket_unix.c
new file mode 100644
index 0000000..d4946d8
--- /dev/null
+++ b/source4/lib/socket/socket_unix.c
@@ -0,0 +1,436 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   unix domain socket functions
+
+   Copyright (C) Stefan Metzmacher 2004
+   Copyright (C) Andrew Tridgell 2004-2005
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "lib/socket/socket.h"
+#include "system/network.h"
+#include "system/filesys.h"
+
+_PUBLIC_ const struct socket_ops *socket_unixdom_ops(enum socket_type type);
+
+
+/*
+  approximate errno mapping
+*/
+static NTSTATUS unixdom_error(int ernum)
+{
+	return map_nt_error_from_unix_common(ernum);
+}
+
+static NTSTATUS unixdom_init(struct socket_context *sock)
+{
+	int type;
+
+	switch (sock->type) {
+	case SOCKET_TYPE_STREAM:
+		type = SOCK_STREAM;
+		break;
+	case SOCKET_TYPE_DGRAM:
+		type = SOCK_DGRAM;
+		break;
+	default:
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	sock->fd = socket(PF_UNIX, type, 0);
+	if (sock->fd == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}
+	sock->private_data = NULL;
+
+	sock->backend_name = "unix";
+
+	smb_set_close_on_exec(sock->fd);
+
+	return NT_STATUS_OK;
+}
+
+static void unixdom_close(struct socket_context *sock)
+{
+	close(sock->fd);
+}
+
+static NTSTATUS unixdom_connect_complete(struct socket_context *sock, uint32_t flags)
+{
+	int error=0, ret;
+	socklen_t len = sizeof(error);
+
+	/* check for any errors that may have occurred - this is needed
+	   for non-blocking connect */
+	ret = getsockopt(sock->fd, SOL_SOCKET, SO_ERROR, &error, &len);
+	if (ret == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}
+	if (error != 0) {
+		return map_nt_error_from_unix_common(error);
+	}
+
+	ret = set_blocking(sock->fd, false);
+	if (ret == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	sock->state = SOCKET_STATE_CLIENT_CONNECTED;
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS unixdom_connect(struct socket_context *sock,
+				const struct socket_address *my_address, 
+				const struct socket_address *srv_address, 
+				uint32_t flags)
+{
+	int ret;
+
+	if (srv_address->sockaddr) {
+		ret = connect(sock->fd, srv_address->sockaddr, srv_address->sockaddrlen);
+	} else {
+		struct sockaddr_un srv_addr;
+		if (strlen(srv_address->addr)+1 > sizeof(srv_addr.sun_path)) {
+			return NT_STATUS_OBJECT_PATH_INVALID;
+		}
+		
+		ZERO_STRUCT(srv_addr);
+		srv_addr.sun_family = AF_UNIX;
+		snprintf(srv_addr.sun_path, sizeof(srv_addr.sun_path), "%s", srv_address->addr);
+
+		ret = connect(sock->fd, (const struct sockaddr *)&srv_addr, sizeof(srv_addr));
+	}
+	if (ret == -1) {
+		return unixdom_error(errno);
+	}
+
+	return unixdom_connect_complete(sock, flags);
+}
+
+static NTSTATUS unixdom_listen(struct socket_context *sock,
+			       const struct socket_address *my_address, 
+			       int queue_size, uint32_t flags)
+{
+	struct sockaddr_un my_addr;
+	int ret;
+
+	/* delete if it already exists */
+	if (my_address->addr) {
+		unlink(my_address->addr);
+	}
+
+	if (my_address->sockaddr) {
+		ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
+	} else if (my_address->addr == NULL) {
+		return NT_STATUS_INVALID_PARAMETER;
+	} else {
+		if (strlen(my_address->addr)+1 > sizeof(my_addr.sun_path)) {
+			return NT_STATUS_OBJECT_PATH_INVALID;
+		}
+		
+		
+		ZERO_STRUCT(my_addr);
+		my_addr.sun_family = AF_UNIX;
+		snprintf(my_addr.sun_path, sizeof(my_addr.sun_path), "%s", my_address->addr);
+
+		ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
+	}
+	if (ret == -1) {
+		return unixdom_error(errno);
+	}
+
+	if (sock->type == SOCKET_TYPE_STREAM) {
+		ret = listen(sock->fd, queue_size);
+		if (ret == -1) {
+			return unixdom_error(errno);
+		}
+	}
+
+	ret = set_blocking(sock->fd, false);
+	if (ret == -1) {
+		return unixdom_error(errno);
+	}
+
+	sock->state = SOCKET_STATE_SERVER_LISTEN;
+	sock->private_data = (void *)talloc_strdup(sock, my_address->addr);
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS unixdom_accept(struct socket_context *sock, 
+			       struct socket_context **new_sock)
+{
+	struct sockaddr_un cli_addr;
+	socklen_t cli_addr_len = sizeof(cli_addr);
+	int new_fd, ret;
+
+	if (sock->type != SOCKET_TYPE_STREAM) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	new_fd = accept(sock->fd, (struct sockaddr *)&cli_addr, &cli_addr_len);
+	if (new_fd == -1) {
+		return unixdom_error(errno);
+	}
+
+	ret = set_blocking(new_fd, false);
+	if (ret == -1) {
+		close(new_fd);
+		return map_nt_error_from_unix_common(errno);
+	}
+
+	smb_set_close_on_exec(new_fd);
+
+	(*new_sock) = talloc(NULL, struct socket_context);
+	if (!(*new_sock)) {
+		close(new_fd);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	/* copy the socket_context */
+	(*new_sock)->type		= sock->type;
+	(*new_sock)->state		= SOCKET_STATE_SERVER_CONNECTED;
+	(*new_sock)->flags		= sock->flags;
+
+	(*new_sock)->fd			= new_fd;
+
+	(*new_sock)->private_data	= NULL;
+	(*new_sock)->ops		= sock->ops;
+	(*new_sock)->backend_name	= sock->backend_name;
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS unixdom_recv(struct socket_context *sock, void *buf, 
+			     size_t wantlen, size_t *nread)
+{
+	ssize_t gotlen;
+
+	*nread = 0;
+
+	gotlen = recv(sock->fd, buf, wantlen, 0);
+	if (gotlen == 0) {
+		return NT_STATUS_END_OF_FILE;
+	} else if (gotlen == -1) {
+		return unixdom_error(errno);
+	}
+
+	*nread = gotlen;
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS unixdom_send(struct socket_context *sock,
+			     const DATA_BLOB *blob, size_t *sendlen)
+{
+	ssize_t len;
+
+	*sendlen = 0;
+
+	len = send(sock->fd, blob->data, blob->length, 0);
+	if (len == -1) {
+		return unixdom_error(errno);
+	}	
+
+	*sendlen = len;
+
+	return NT_STATUS_OK;
+}
+
+
+static NTSTATUS unixdom_sendto(struct socket_context *sock, 
+			       const DATA_BLOB *blob, size_t *sendlen, 
+			       const struct socket_address *dest)
+{
+	struct sockaddr_un srv_addr;
+	const struct sockaddr *sa;
+	socklen_t sa_len;
+	ssize_t len;
+
+	*sendlen = 0;
+
+	if (dest->sockaddr) {
+		sa = dest->sockaddr;
+		sa_len = dest->sockaddrlen;
+	} else {
+		if (strlen(dest->addr)+1 > sizeof(srv_addr.sun_path)) {
+			return NT_STATUS_OBJECT_PATH_INVALID;
+		}
+
+		ZERO_STRUCT(srv_addr);
+		srv_addr.sun_family = AF_UNIX;
+		snprintf(srv_addr.sun_path, sizeof(srv_addr.sun_path), "%s",
+			 dest->addr);
+		sa = (struct sockaddr *) &srv_addr;
+		sa_len = sizeof(srv_addr);
+	}
+
+	len = sendto(sock->fd, blob->data, blob->length, 0, sa, sa_len);
+
+	/* retry once */
+	if (len == -1 && errno == EMSGSIZE) {
+		/* round up in 1K increments */
+		int bufsize = ((blob->length + 1023) & (~1023));
+		if (setsockopt(sock->fd, SOL_SOCKET, SO_SNDBUF, &bufsize,
+			       sizeof(bufsize)) == -1)
+		{
+			return map_nt_error_from_unix_common(EMSGSIZE);
+		}
+		len = sendto(sock->fd, blob->data, blob->length, 0, sa, sa_len);
+	}
+
+	if (len == -1) {
+		return map_nt_error_from_unix_common(errno);
+	}	
+
+	*sendlen = len;
+
+	return NT_STATUS_OK;
+}
+
+
+static NTSTATUS unixdom_set_option(struct socket_context *sock, 
+				   const char *option, const char *val)
+{
+	return NT_STATUS_OK;
+}
+
+static char *unixdom_get_peer_name(struct socket_context *sock, TALLOC_CTX *mem_ctx)
+{
+	return talloc_strdup(mem_ctx, "LOCAL/unixdom");
+}
+
+static struct socket_address *unixdom_get_peer_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
+{
+	struct sockaddr_un *peer_addr;
+	socklen_t len = sizeof(*peer_addr);
+	struct socket_address *peer;
+	int ret;
+
+	peer = talloc(mem_ctx, struct socket_address);
+	if (!peer) {
+		return NULL;
+	}
+	
+	peer->family = sock->backend_name;
+	peer_addr = talloc(peer, struct sockaddr_un);
+	if (!peer_addr) {
+		talloc_free(peer);
+		return NULL;
+	}
+
+	peer->sockaddr = (struct sockaddr *)peer_addr;
+
+	ret = getpeername(sock->fd, peer->sockaddr, &len);
+	if (ret == -1) {
+		talloc_free(peer);
+		return NULL;
+	}
+
+	peer->sockaddrlen = len;
+
+	peer->port = 0;
+	peer->addr = talloc_strdup(peer, "LOCAL/unixdom");
+	if (!peer->addr) {
+		talloc_free(peer);
+		return NULL;
+	}
+
+	return peer;
+}
+
+static struct socket_address *unixdom_get_my_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
+{
+	struct sockaddr_un *local_addr;
+	socklen_t len = sizeof(*local_addr);
+	struct socket_address *local;
+	int ret;
+	
+	local = talloc(mem_ctx, struct socket_address);
+	if (!local) {
+		return NULL;
+	}
+	
+	local->family = sock->backend_name;
+	local_addr = talloc(local, struct sockaddr_un);
+	if (!local_addr) {
+		talloc_free(local);
+		return NULL;
+	}
+
+	local->sockaddr = (struct sockaddr *)local_addr;
+
+	ret = getsockname(sock->fd, local->sockaddr, &len);
+	if (ret == -1) {
+		talloc_free(local);
+		return NULL;
+	}
+
+	local->sockaddrlen = len;
+
+	local->port = 0;
+	local->addr = talloc_strdup(local, "LOCAL/unixdom");
+	if (!local->addr) {
+		talloc_free(local);
+		return NULL;
+	}
+
+	return local;
+}
+
+static int unixdom_get_fd(struct socket_context *sock)
+{
+	return sock->fd;
+}
+
+static NTSTATUS unixdom_pending(struct socket_context *sock, size_t *npending)
+{
+	int value = 0;
+	if (ioctl(sock->fd, FIONREAD, &value) == 0) {
+		*npending = value;
+		return NT_STATUS_OK;
+	}
+	return map_nt_error_from_unix_common(errno);
+}
+
+static const struct socket_ops unixdom_ops = {
+	.name			= "unix",
+	.fn_init		= unixdom_init,
+	.fn_connect		= unixdom_connect,
+	.fn_connect_complete	= unixdom_connect_complete,
+	.fn_listen		= unixdom_listen,
+	.fn_accept		= unixdom_accept,
+	.fn_recv		= unixdom_recv,
+	.fn_send		= unixdom_send,
+	.fn_sendto		= unixdom_sendto,
+	.fn_close		= unixdom_close,
+	.fn_pending		= unixdom_pending,
+
+	.fn_set_option		= unixdom_set_option,
+
+	.fn_get_peer_name	= unixdom_get_peer_name,
+	.fn_get_peer_addr	= unixdom_get_peer_addr,
+	.fn_get_my_addr		= unixdom_get_my_addr,
+
+	.fn_get_fd		= unixdom_get_fd
+};
+
+_PUBLIC_ const struct socket_ops *socket_unixdom_ops(enum socket_type type)
+{
+	return &unixdom_ops;
+}