1 files changed, 406 insertions, 0 deletions
diff --git a/source3/modules/vfs_smb_traffic_analyzer.c b/source3/modules/vfs_smb_traffic_analyzer.c
new file mode 100644
index 0000000000..9b4c1b3e25
--- /dev/null
+++ b/source3/modules/vfs_smb_traffic_analyzer.c
@@ -0,0 +1,406 @@
+/*
+ * traffic-analyzer VFS module. Measure the smb traffic users create
+ * on the net.
+ *
+ * Copyright (C) Holger Hetterich, 2008
+ * Copyright (C) Jeremy Allison, 2008
+ *
+ * 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"
+
+/* abstraction for the send_over_network function */
+
+enum sock_type {INTERNET_SOCKET = 0, UNIX_DOMAIN_SOCKET};
+
+#define LOCAL_PATHNAME "/var/tmp/stadsocket"
+
+static int vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
+
+static enum sock_type smb_traffic_analyzer_connMode(vfs_handle_struct *handle)
+{
+	connection_struct *conn = handle->conn;
+        const char *Mode;
+        Mode=lp_parm_const_string(SNUM(conn), "smb_traffic_analyzer","mode", \
+			"internet_socket");
+	if (strstr(Mode,"unix_domain_socket")) {
+		return UNIX_DOMAIN_SOCKET;
+	} else {
+		return INTERNET_SOCKET;
+	}
+}
+
+/* Connect to an internet socket */
+
+static int smb_traffic_analyzer_connect_inet_socket(vfs_handle_struct *handle,
+					const char *name, uint16_t port)
+{
+	/* Create a streaming Socket */
+	int sockfd = -1;
+	struct addrinfo hints;
+	struct addrinfo *ailist = NULL;
+	struct addrinfo *res = NULL;
+	int ret;
+
+	ZERO_STRUCT(hints);
+	/* By default make sure it supports TCP. */
+	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_flags = AI_ADDRCONFIG;
+
+	ret = getaddrinfo(name,
+			NULL,
+			&hints,
+			&ailist);
+
+        if (ret) {
+		DEBUG(3,("smb_traffic_analyzer_connect_inet_socket: "
+			"getaddrinfo failed for name %s [%s]\n",
+                        name,
+                        gai_strerror(ret) ));
+		return -1;
+        }
+
+	DEBUG(3,("smb_traffic_analyzer: Internet socket mode. Hostname: %s,"
+		"Port: %i\n", name, port));
+
+	for (res = ailist; res; res = res->ai_next) {
+		struct sockaddr_storage ss;
+
+		if (!res->ai_addr || res->ai_addrlen == 0) {
+			continue;
+		}
+
+		ZERO_STRUCT(ss);
+		memcpy(&ss, res->ai_addr, res->ai_addrlen);
+
+		sockfd = open_socket_out(SOCK_STREAM, &ss, port, 10000);
+		if (sockfd != -1) {
+			break;
+		}
+	}
+
+	if (ailist) {
+		freeaddrinfo(ailist);
+	}
+
+        if (sockfd == -1) {
+		DEBUG(1, ("smb_traffic_analyzer: unable to create "
+			"socket, error is %s",
+			strerror(errno)));
+		return -1;
+	}
+
+	return sockfd;
+}
+
+/* Connect to a unix domain socket */
+
+static int smb_traffic_analyzer_connect_unix_socket(vfs_handle_struct *handle,
+						const char *name)
+{
+	/* Create the socket to stad */
+	int len, sock;
+	struct sockaddr_un remote;
+
+	DEBUG(7, ("smb_traffic_analyzer_connect_unix_socket: "
+			"Unix domain socket mode. Using %s\n",
+			name ));
+
+	if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
+		DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
+			"Couldn't create socket, "
+			"make sure stad is running!\n"));
+	}
+	remote.sun_family = AF_UNIX;
+	strlcpy(remote.sun_path, name,
+		    sizeof(remote.sun_path));
+	len=strlen(remote.sun_path) + sizeof(remote.sun_family);
+	if (connect(sock, (struct sockaddr *)&remote, len) == -1 ) {
+		DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
+			"Could not connect to "
+			"socket, make sure\nstad is running!\n"));
+		close(sock);
+		return -1;
+	}
+	return sock;
+}
+
+/* Private data allowing shared connection sockets. */
+
+struct refcounted_sock {
+	struct refcounted_sock *next, *prev;
+	char *name;
+	uint16_t port;
+	int sock;
+	unsigned int ref_count;
+};
+
+/* Send data over a socket */
+
+static void smb_traffic_analyzer_send_data(vfs_handle_struct *handle,
+					ssize_t result,
+					const char *file_name,
+					bool Write)
+{
+	struct refcounted_sock *rf_sock = NULL;
+	struct timeval tv;
+	time_t tv_sec;
+	struct tm *tm = NULL;
+	int seconds;
+	char *str = NULL;
+	size_t len;
+
+	SMB_VFS_HANDLE_GET_DATA(handle, rf_sock, struct refcounted_sock, return);
+
+	if (rf_sock == NULL || rf_sock->sock == -1) {
+		DEBUG(1, ("smb_traffic_analyzer_send_data: socket is "
+			"closed\n"));
+		return;
+	}
+
+	GetTimeOfDay(&tv);
+	tv_sec = convert_timespec_to_time_t(convert_timeval_to_timespec(tv));
+	tm = localtime(&tv_sec);
+	if (!tm) {
+		return;
+	}
+	seconds=(float) (tv.tv_usec / 1000);
+
+	str = talloc_asprintf(talloc_tos(),
+			"V1,%u,\"%s\",\"%s\",\"%c\",\"%s\",\"%s\","
+			"\"%04d-%02d-%02d %02d:%02d:%02d.%03d\"\n",
+			(unsigned int)result,
+			handle->conn->server_info->sanitized_username,
+			pdb_get_domain(handle->conn->server_info->sam_account),
+			Write ? 'W' : 'R',
+			handle->conn->connectpath,
+			file_name,
+			tm->tm_year+1900,
+			tm->tm_mon+1,
+			tm->tm_mday,
+			tm->tm_hour,
+			tm->tm_min,
+			tm->tm_sec,
+			(int)seconds);
+
+	if (!str) {
+		return;
+	}
+
+	len = strlen(str);
+
+	DEBUG(10, ("smb_traffic_analyzer_send_data_socket: sending %s\n",
+			str));
+	if (write_data(rf_sock->sock, str, len) != len) {
+		DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
+			"error sending data to socket!\n"));
+		return ;
+	}
+}
+
+static struct refcounted_sock *sock_list;
+
+static void smb_traffic_analyzer_free_data(void **pptr)
+{
+	struct refcounted_sock *rf_sock = *(struct refcounted_sock **)pptr;
+	if (rf_sock == NULL) {
+		return;
+	}
+	rf_sock->ref_count--;
+	if (rf_sock->ref_count != 0) {
+		return;
+	}
+	if (rf_sock->sock != -1) {
+		close(rf_sock->sock);
+	}
+	DLIST_REMOVE(sock_list, rf_sock);
+	TALLOC_FREE(rf_sock);
+}
+
+static int smb_traffic_analyzer_connect(struct vfs_handle_struct *handle,
+                         const char *service,
+                         const char *user)
+{
+	connection_struct *conn = handle->conn;
+	enum sock_type st = smb_traffic_analyzer_connMode(handle);
+	struct refcounted_sock *rf_sock = NULL;
+	const char *name = (st == UNIX_DOMAIN_SOCKET) ? LOCAL_PATHNAME :
+				lp_parm_const_string(SNUM(conn),
+					"smb_traffic_analyzer",
+				"host", "localhost");
+	uint16_t port = (st == UNIX_DOMAIN_SOCKET) ? 0 :
+				atoi( lp_parm_const_string(SNUM(conn),
+				"smb_traffic_analyzer", "port", "9430"));
+
+	/* Are we already connected ? */
+	for (rf_sock = sock_list; rf_sock; rf_sock = rf_sock->next) {
+		if (port == rf_sock->port &&
+				(strcmp(name, rf_sock->name) == 0)) {
+			break;
+		}
+	}
+
+	/* If we're connected already, just increase the
+ 	 * reference count. */
+	if (rf_sock) {
+		rf_sock->ref_count++;
+	} else {
+		/* New connection. */
+		rf_sock = TALLOC_ZERO_P(NULL, struct refcounted_sock);
+		if (rf_sock == NULL) {
+			errno = ENOMEM;
+			return -1;
+		}
+		rf_sock->name = talloc_strdup(rf_sock, name);
+		if (rf_sock->name == NULL) {
+			TALLOC_FREE(rf_sock);
+			errno = ENOMEM;
+			return -1;
+		}
+		rf_sock->port = port;
+		rf_sock->ref_count = 1;
+
+		if (st == UNIX_DOMAIN_SOCKET) {
+			rf_sock->sock = smb_traffic_analyzer_connect_unix_socket(handle,
+							name);
+		} else {
+
+			rf_sock->sock = smb_traffic_analyzer_connect_inet_socket(handle,
+							name,
+							port);
+		}
+		if (rf_sock->sock == -1) {
+			TALLOC_FREE(rf_sock);
+			return -1;
+		}
+		DLIST_ADD(sock_list, rf_sock);
+	}
+
+	/* Store the private data. */
+	SMB_VFS_HANDLE_SET_DATA(handle, rf_sock, smb_traffic_analyzer_free_data,
+				struct refcounted_sock, return -1);
+	return SMB_VFS_NEXT_CONNECT(handle, service, user);
+}
+
+/* VFS Functions: write, read, pread, pwrite for now */
+
+static ssize_t smb_traffic_analyzer_read(vfs_handle_struct *handle, \
+				files_struct *fsp, void *data, size_t n)
+{
+	ssize_t result;
+
+	result = SMB_VFS_NEXT_READ(handle, fsp, data, n);
+	DEBUG(10, ("smb_traffic_analyzer_read: READ: %s\n", fsp->fsp_name ));
+
+	smb_traffic_analyzer_send_data(handle,
+			result,
+			fsp->fsp_name,
+			false);
+	return result;
+}
+
+
+static ssize_t smb_traffic_analyzer_pread(vfs_handle_struct *handle, \
+		files_struct *fsp, void *data, size_t n, SMB_OFF_T offset)
+{
+	ssize_t result;
+
+	result = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
+
+	DEBUG(10, ("smb_traffic_analyzer_pread: PREAD: %s\n", fsp->fsp_name ));
+
+	smb_traffic_analyzer_send_data(handle,
+			result,
+			fsp->fsp_name,
+			false);
+
+	return result;
+}
+
+static ssize_t smb_traffic_analyzer_write(vfs_handle_struct *handle, \
+			files_struct *fsp, const void *data, size_t n)
+{
+	ssize_t result;
+
+	result = SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
+
+	DEBUG(10, ("smb_traffic_analyzer_write: WRITE: %s\n", fsp->fsp_name ));
+
+	smb_traffic_analyzer_send_data(handle,
+			result,
+			fsp->fsp_name,
+			true);
+	return result;
+}
+
+static ssize_t smb_traffic_analyzer_pwrite(vfs_handle_struct *handle, \
+	     files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset)
+{
+	ssize_t result;
+
+	result = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
+
+	DEBUG(10, ("smb_traffic_analyzer_pwrite: PWRITE: %s\n", fsp->fsp_name ));
+
+	smb_traffic_analyzer_send_data(handle,
+			result,
+			fsp->fsp_name,
+			true);
+	return result;
+}
+
+/* VFS operations we use */
+
+static vfs_op_tuple smb_traffic_analyzer_tuples[] = {
+
+        {SMB_VFS_OP(smb_traffic_analyzer_connect), SMB_VFS_OP_CONNECT,
+         SMB_VFS_LAYER_LOGGER},
+	{SMB_VFS_OP(smb_traffic_analyzer_read),	SMB_VFS_OP_READ,
+	 SMB_VFS_LAYER_LOGGER},
+	{SMB_VFS_OP(smb_traffic_analyzer_pread), SMB_VFS_OP_PREAD,
+	 SMB_VFS_LAYER_LOGGER},
+	{SMB_VFS_OP(smb_traffic_analyzer_write), SMB_VFS_OP_WRITE,
+	 SMB_VFS_LAYER_LOGGER},
+	{SMB_VFS_OP(smb_traffic_analyzer_pwrite), SMB_VFS_OP_PWRITE,
+	 SMB_VFS_LAYER_LOGGER},
+       	{SMB_VFS_OP(NULL),SMB_VFS_OP_NOOP,SMB_VFS_LAYER_NOOP}
+};
+
+/* Module initialization */
+
+NTSTATUS vfs_smb_traffic_analyzer_init(void)
+{
+	NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, \
+		"smb_traffic_analyzer",	smb_traffic_analyzer_tuples);
+
+	if (!NT_STATUS_IS_OK(ret)) {
+		return ret;
+	}
+
+	vfs_smb_traffic_analyzer_debug_level =
+		debug_add_class("smb_traffic_analyzer");
+
+	if (vfs_smb_traffic_analyzer_debug_level == -1) {
+		vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
+		DEBUG(1, ("smb_traffic_analyzer_init: Couldn't register custom"
+			 "debugging class!\n"));
+	} else {
+		DEBUG(3, ("smb_traffic_analyzer_init: Debug class number of"
+			"'smb_traffic_analyzer': %d\n", \
+			vfs_smb_traffic_analyzer_debug_level));
+	}
+
+	return ret;
+}