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-rw-r--r--examples/VFS/recycle.c284
1 files changed, 284 insertions, 0 deletions
diff --git a/examples/VFS/recycle.c b/examples/VFS/recycle.c
new file mode 100644
index 0000000000..4e032bb813
--- /dev/null
+++ b/examples/VFS/recycle.c
@@ -0,0 +1,284 @@
+/*
+ * Auditing VFS module for samba. Log selected file operations to syslog
+ * facility.
+ *
+ * Copyright (C) 2001, Brandon Stone, Amherst College, <bbstone@amherst.edu>.
+ * Copyright (C) 2002, Jeremy Allison - modified to make a VFS module.
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "config.h"
+#include <stdio.h>
+#include <sys/stat.h>
+#ifdef HAVE_UTIME_H
+#include <utime.h>
+#endif
+#ifdef HAVE_DIRENT_H
+#include <dirent.h>
+#endif
+#include <syslog.h>
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+#include <errno.h>
+#include <string.h>
+#include <includes.h>
+#include <vfs.h>
+
+/* VFS operations */
+
+extern struct vfs_ops default_vfs_ops; /* For passthrough operation */
+
+static int recycle_unlink(connection_struct *, const char *);
+static int recycle_connect(struct connection_struct *conn, const char *service, const char *user);
+static void recycle_disconnect(struct connection_struct *conn);
+
+struct vfs_ops recycle_ops = {
+
+ /* Disk operations */
+
+ recycle_connect, /* connect */
+ recycle_disconnect, /* disconnect */
+ NULL, /* disk free */
+
+ /* Directory operations */
+
+ NULL, /* opendir */
+ NULL, /* readdir */
+ NULL, /* mkdir */
+ NULL, /* rmdir */
+ NULL, /* closedir */
+
+ /* File operations */
+
+ NULL, /* open */
+ NULL, /* close */
+ NULL, /* read */
+ NULL, /* write */
+ NULL, /* lseek */
+ NULL, /* rename */
+ NULL, /* fsync */
+ NULL, /* stat */
+ NULL, /* fstat */
+ NULL, /* lstat */
+ recycle_unlink,
+ NULL, /* chmod */
+ NULL, /* fchmod */
+ NULL, /* chown */
+ NULL, /* fchown */
+ NULL, /* chdir */
+ NULL, /* getwd */
+ NULL, /* utime */
+ NULL, /* ftruncate */
+ NULL, /* lock */
+ NULL, /* symlink */
+ NULL, /* readlink */
+ NULL, /* link */
+ NULL, /* mknod */
+ NULL, /* realpath */
+ NULL, /* fget_nt_acl */
+ NULL, /* get_nt_acl */
+ NULL, /* fset_nt_acl */
+ NULL, /* set_nt_acl */
+
+ NULL, /* chmod_acl */
+ NULL, /* fchmod_acl */
+
+ NULL, /* sys_acl_get_entry */
+ NULL, /* sys_acl_get_tag_type */
+ NULL, /* sys_acl_get_permset */
+ NULL, /* sys_acl_get_qualifier */
+ NULL, /* sys_acl_get_file */
+ NULL, /* sys_acl_get_fd */
+ NULL, /* sys_acl_clear_perms */
+ NULL, /* sys_acl_add_perm */
+ NULL, /* sys_acl_to_text */
+ NULL, /* sys_acl_init */
+ NULL, /* sys_acl_create_entry */
+ NULL, /* sys_acl_set_tag_type */
+ NULL, /* sys_acl_set_qualifier */
+ NULL, /* sys_acl_set_permset */
+ NULL, /* sys_acl_valid */
+ NULL, /* sys_acl_set_file */
+ NULL, /* sys_acl_set_fd */
+ NULL, /* sys_acl_delete_def_file */
+ NULL, /* sys_acl_get_perm */
+ NULL, /* sys_acl_free_text */
+ NULL, /* sys_acl_free_acl */
+ NULL /* sys_acl_free_qualifier */
+};
+
+/* VFS initialisation function. Return initialised vfs_ops structure
+ back to SAMBA. */
+
+struct vfs_ops *vfs_init(int *vfs_version, struct vfs_ops *def_vfs_ops)
+{
+ struct vfs_ops tmp_ops;
+
+ *vfs_version = SMB_VFS_INTERFACE_VERSION;
+ memcpy(&tmp_ops, def_vfs_ops, sizeof(struct vfs_ops));
+ tmp_ops.unlink = recycle_unlink;
+ tmp_ops.connect = recycle_connect;
+ tmp_ops.disconnect = recycle_disconnect;
+ memcpy(&recycle_ops, &tmp_ops, sizeof(struct vfs_ops));
+ return &recycle_ops;
+}
+
+static int recycle_connect(struct connection_struct *conn, const char *service, const char *user)
+{
+ pstring opts_str;
+ fstring recycle_bin;
+ char *p;
+
+ DEBUG(3,("recycle_connect: called for service %s as user %s\n", service, user));
+
+ pstrcpy(opts_str, (const char *)lp_vfs_options(SNUM(conn)));
+ if (!*opts_str) {
+ DEBUG(3,("recycle_connect: No options listed (%s).\n", lp_vfs_options(SNUM(conn)) ));
+ return 0; /* No options. */
+ }
+
+ p = opts_str;
+ if (next_token(&p,recycle_bin,"=",sizeof(recycle_bin))) {
+ if (!strequal("recycle", recycle_bin)) {
+ DEBUG(3,("recycle_connect: option %s is not recycle\n", recycle_bin ));
+ return -1;
+ }
+ }
+
+ if (!next_token(&p,recycle_bin," \n",sizeof(recycle_bin))) {
+ DEBUG(3,("recycle_connect: no option after recycle=\n"));
+ return -1;
+ }
+
+ DEBUG(10,("recycle_connect: recycle name is %s\n", recycle_bin ));
+
+ conn->vfs_private = (void *)strdup(recycle_bin);
+ return 0;
+}
+
+static void recycle_disconnect(struct connection_struct *conn)
+{
+ SAFE_FREE(conn->vfs_private);
+}
+
+static BOOL recycle_XXX_exist(connection_struct *conn, const char *dname, BOOL isdir)
+{
+ SMB_STRUCT_STAT st;
+
+ if (default_vfs_ops.stat(conn,dname,&st) != 0)
+ return(False);
+
+ if (isdir)
+ return S_ISDIR(st.st_mode) ? True : False;
+ else
+ return S_ISREG(st.st_mode) ? True : False;
+}
+
+static BOOL recycle_directory_exist(connection_struct *conn, const char *dname)
+{
+ return recycle_XXX_exist(conn, dname, True);
+}
+
+static BOOL recycle_file_exist(connection_struct *conn, const char *fname)
+{
+ return recycle_XXX_exist(conn, fname, False);
+}
+
+static SMB_OFF_T recycle_get_file_size(connection_struct *conn, const char *fname)
+{
+ SMB_STRUCT_STAT st;
+
+ if (default_vfs_ops.stat(conn,fname,&st) != 0)
+ return (SMB_OFF_T)-1;
+
+ return(st.st_size);
+}
+
+/********************************************************************
+ Check if file should be recycled
+*********************************************************************/
+
+static int recycle_unlink(connection_struct *conn, const char *inname)
+{
+ fstring recycle_bin;
+ pstring fname;
+ char *base, *ext;
+ pstring bin;
+ int i=1, len, addlen;
+ int dir_mask=0700;
+ SMB_BIG_UINT dfree,dsize,bsize;
+
+ *recycle_bin = '\0';
+ pstrcpy(fname, inname);
+
+ if (conn->vfs_private)
+ fstrcpy(recycle_bin, (const char *)conn->vfs_private);
+
+ if(!*recycle_bin) {
+ DEBUG(3, ("recycle bin: share parameter not set, purging %s...\n", fname));
+ return default_vfs_ops.unlink(conn,fname);
+ }
+
+ if(recycle_get_file_size(conn, fname) == 0) {
+ DEBUG(3, ("recycle bin: file %s is empty, purging...\n", fname));
+ return default_vfs_ops.unlink(conn,fname);
+ }
+
+ base = strrchr(fname, '/') + 1;
+ if(base == (char*)1)
+ ext = strrchr(fname, '.');
+ else
+ ext = strrchr(base, '.');
+
+ pstrcpy(bin, recycle_bin);
+ pstrcat(bin, "/");
+ pstrcat(bin, base);
+
+ if(strcmp(fname,bin) == 0) {
+ DEBUG(3, ("recycle bin: file %s exists, purging...\n", fname));
+ return default_vfs_ops.unlink(conn,fname);
+ }
+
+ len = strlen(bin);
+ addlen = sizeof(pstring)-len-1;
+ while(recycle_file_exist(conn,bin)) {
+ slprintf(bin+len, addlen, " (Copy #%d)", i++);
+ pstrcat(bin, ext);
+ }
+
+ DEBUG(3, ("recycle bin: moving source=%s to dest=%s\n", fname, bin));
+ default_vfs_ops.disk_free(conn,".",True,&bsize,&dfree,&dsize);
+ if((unsigned int)dfree > 0) {
+ int ret;
+ if(!recycle_directory_exist(conn,recycle_bin)) {
+ DEBUG(3, ("recycle bin: directory %s nonexistant, creating...\n", recycle_bin));
+ if (default_vfs_ops.mkdir(conn,recycle_bin,dir_mask) == -1) {
+ DEBUG(3, ("recycle bin: unable to create directory %s. Error was %s\n",
+ recycle_bin, strerror(errno) ));
+ }
+ }
+ DEBUG(3, ("recycle bin: move %s -> %s\n", fname, bin));
+
+ ret = default_vfs_ops.rename(conn, fname, bin);
+ if (ret == -1)
+ DEBUG(3, ("recycle bin: move error %d (%s)\n", errno, strerror(errno) ));
+ return ret;
+ } else {
+ DEBUG(3, ("recycle bin: move failed, purging...\n"));
+ return default_vfs_ops.unlink(conn,fname);
+ }
+}
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