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-rw-r--r--modules/dav/fs/repos.c2269
1 files changed, 2269 insertions, 0 deletions
diff --git a/modules/dav/fs/repos.c b/modules/dav/fs/repos.c
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--- /dev/null
+++ b/modules/dav/fs/repos.c
@@ -0,0 +1,2269 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+** DAV filesystem-based repository provider
+*/
+
+#include "apr.h"
+#include "apr_file_io.h"
+#include "apr_strings.h"
+#include "apr_buckets.h"
+
+#if APR_HAVE_UNISTD_H
+#include <unistd.h> /* for getpid() */
+#endif
+
+#include "httpd.h"
+#include "http_log.h"
+#include "http_protocol.h" /* for ap_set_* (in dav_fs_set_headers) */
+#include "http_request.h" /* for ap_update_mtime() */
+
+#include "mod_dav.h"
+#include "repos.h"
+
+
+/* to assist in debugging mod_dav's GET handling */
+#define DEBUG_GET_HANDLER 0
+
+#define DAV_FS_COPY_BLOCKSIZE 16384 /* copy 16k at a time */
+
+/* context needed to identify a resource */
+struct dav_resource_private {
+ apr_pool_t *pool; /* memory storage pool associated with request */
+ const char *pathname; /* full pathname to resource */
+ apr_finfo_t finfo; /* filesystem info */
+ request_rec *r;
+};
+
+/* private context for doing a filesystem walk */
+typedef struct {
+ /* the input walk parameters */
+ const dav_walk_params *params;
+
+ /* reused as we walk */
+ dav_walk_resource wres;
+
+ dav_resource res1;
+ dav_resource_private info1;
+ dav_buffer path1;
+ dav_buffer uri_buf;
+
+ /* MOVE/COPY need a secondary path */
+ dav_resource res2;
+ dav_resource_private info2;
+ dav_buffer path2;
+
+ dav_buffer locknull_buf;
+
+} dav_fs_walker_context;
+
+typedef struct {
+ int is_move; /* is this a MOVE? */
+ dav_buffer work_buf; /* handy buffer for copymove_file() */
+
+ /* CALLBACK: this is a secondary resource managed specially for us */
+ const dav_resource *res_dst;
+
+ /* copied from dav_walk_params (they are invariant across the walk) */
+ const dav_resource *root;
+ apr_pool_t *pool;
+
+} dav_fs_copymove_walk_ctx;
+
+/* an internal WALKTYPE to walk hidden files (the .DAV directory) */
+#define DAV_WALKTYPE_HIDDEN 0x4000
+
+/* an internal WALKTYPE to call collections (again) after their contents */
+#define DAV_WALKTYPE_POSTFIX 0x8000
+
+#define DAV_CALLTYPE_POSTFIX 1000 /* a private call type */
+
+
+/* pull this in from the other source file */
+extern const dav_hooks_locks dav_hooks_locks_fs;
+
+/* forward-declare the hook structures */
+static const dav_hooks_repository dav_hooks_repository_fs;
+static const dav_hooks_liveprop dav_hooks_liveprop_fs;
+
+/*
+** The namespace URIs that we use. This list and the enumeration must
+** stay in sync.
+*/
+static const char * const dav_fs_namespace_uris[] =
+{
+ "DAV:",
+ "http://apache.org/dav/props/",
+
+ NULL /* sentinel */
+};
+enum {
+ DAV_FS_URI_DAV, /* the DAV: namespace URI */
+ DAV_FS_URI_MYPROPS /* the namespace URI for our custom props */
+};
+
+/*
+** Does this platform support an executable flag?
+**
+** ### need a way to portably abstract this query
+**
+** DAV_FINFO_MASK gives the appropriate mask to use for the stat call
+** used to get file attributes.
+*/
+#ifndef WIN32
+#define DAV_FS_HAS_EXECUTABLE
+#define DAV_FINFO_MASK (APR_FINFO_LINK | APR_FINFO_TYPE | APR_FINFO_INODE | \
+ APR_FINFO_SIZE | APR_FINFO_CTIME | APR_FINFO_MTIME | \
+ APR_FINFO_PROT)
+#else
+/* as above, but without APR_FINFO_PROT */
+#define DAV_FINFO_MASK (APR_FINFO_LINK | APR_FINFO_TYPE | APR_FINFO_INODE | \
+ APR_FINFO_SIZE | APR_FINFO_CTIME | APR_FINFO_MTIME)
+#endif
+
+/*
+** The single property that we define (in the DAV_FS_URI_MYPROPS namespace)
+*/
+#define DAV_PROPID_FS_executable 1
+
+/*
+ * prefix for temporary files
+ */
+#define DAV_FS_TMP_PREFIX ".davfs.tmp"
+
+static const dav_liveprop_spec dav_fs_props[] =
+{
+ /* standard DAV properties */
+ {
+ DAV_FS_URI_DAV,
+ "creationdate",
+ DAV_PROPID_creationdate,
+ 0
+ },
+ {
+ DAV_FS_URI_DAV,
+ "getcontentlength",
+ DAV_PROPID_getcontentlength,
+ 0
+ },
+ {
+ DAV_FS_URI_DAV,
+ "getetag",
+ DAV_PROPID_getetag,
+ 0
+ },
+ {
+ DAV_FS_URI_DAV,
+ "getlastmodified",
+ DAV_PROPID_getlastmodified,
+ 0
+ },
+
+ /* our custom properties */
+ {
+ DAV_FS_URI_MYPROPS,
+ "executable",
+ DAV_PROPID_FS_executable,
+ 0 /* handled special in dav_fs_is_writable */
+ },
+
+ { 0 } /* sentinel */
+};
+
+static const dav_liveprop_group dav_fs_liveprop_group =
+{
+ dav_fs_props,
+ dav_fs_namespace_uris,
+ &dav_hooks_liveprop_fs
+};
+
+
+/* define the dav_stream structure for our use */
+struct dav_stream {
+ apr_pool_t *p;
+ apr_file_t *f;
+ const char *pathname; /* we may need to remove it at close time */
+ char *temppath;
+ int unlink_on_error;
+};
+
+/* returns an appropriate HTTP status code given an APR status code for a
+ * failed I/O operation. ### use something besides 500? */
+#define MAP_IO2HTTP(e) (APR_STATUS_IS_ENOSPC(e) ? HTTP_INSUFFICIENT_STORAGE : \
+ APR_STATUS_IS_ENOENT(e) ? HTTP_CONFLICT : \
+ HTTP_INTERNAL_SERVER_ERROR)
+
+/* forward declaration for internal treewalkers */
+static dav_error * dav_fs_walk(const dav_walk_params *params, int depth,
+ dav_response **response);
+static dav_error * dav_fs_internal_walk(const dav_walk_params *params,
+ int depth, int is_move,
+ const dav_resource *root_dst,
+ dav_response **response);
+
+/* --------------------------------------------------------------------
+**
+** PRIVATE REPOSITORY FUNCTIONS
+*/
+static request_rec *dav_fs_get_request_rec(const dav_resource *resource)
+{
+ return resource->info->r;
+}
+
+apr_pool_t *dav_fs_pool(const dav_resource *resource)
+{
+ return resource->info->pool;
+}
+
+const char *dav_fs_pathname(const dav_resource *resource)
+{
+ return resource->info->pathname;
+}
+
+dav_error * dav_fs_dir_file_name(
+ const dav_resource *resource,
+ const char **dirpath_p,
+ const char **fname_p)
+{
+ dav_resource_private *ctx = resource->info;
+
+ if (resource->collection) {
+ *dirpath_p = ctx->pathname;
+ if (fname_p != NULL)
+ *fname_p = NULL;
+ }
+ else {
+ const char *testpath, *rootpath;
+ char *dirpath = ap_make_dirstr_parent(ctx->pool, ctx->pathname);
+ apr_size_t dirlen = strlen(dirpath);
+ apr_status_t rv = APR_SUCCESS;
+
+ testpath = dirpath;
+ if (dirlen > 0) {
+ rv = apr_filepath_root(&rootpath, &testpath, 0, ctx->pool);
+ }
+
+ /* remove trailing slash from dirpath, unless it's a root path
+ */
+ if ((rv == APR_SUCCESS && testpath && *testpath)
+ || rv == APR_ERELATIVE) {
+ if (dirpath[dirlen - 1] == '/') {
+ dirpath[dirlen - 1] = '\0';
+ }
+ }
+
+ /* ###: Looks like a response could be appropriate
+ *
+ * APR_SUCCESS here tells us the dir is a root
+ * APR_ERELATIVE told us we had no root (ok)
+ * APR_EINCOMPLETE an incomplete testpath told us
+ * there was no -file- name here!
+ * APR_EBADPATH or other errors tell us this file
+ * path is undecipherable
+ */
+
+ if (rv == APR_SUCCESS || rv == APR_ERELATIVE) {
+ *dirpath_p = dirpath;
+ if (fname_p != NULL)
+ *fname_p = ctx->pathname + dirlen;
+ }
+ else {
+ return dav_new_error(ctx->pool, HTTP_INTERNAL_SERVER_ERROR, 0, rv,
+ "An incomplete/bad path was found in "
+ "dav_fs_dir_file_name.");
+ }
+ }
+
+ return NULL;
+}
+
+/* Note: picked up from ap_gm_timestr_822() */
+/* NOTE: buf must be at least DAV_TIMEBUF_SIZE chars in size */
+static void dav_format_time(int style, apr_time_t sec, char *buf, apr_size_t buflen)
+{
+ apr_time_exp_t tms;
+
+ /* ### what to do if fails? */
+ (void) apr_time_exp_gmt(&tms, sec);
+
+ if (style == DAV_STYLE_ISO8601) {
+ /* ### should we use "-00:00" instead of "Z" ?? */
+
+ /* 20 chars plus null term */
+ apr_snprintf(buf, buflen, "%.4d-%.2d-%.2dT%.2d:%.2d:%.2dZ",
+ tms.tm_year + 1900, tms.tm_mon + 1, tms.tm_mday,
+ tms.tm_hour, tms.tm_min, tms.tm_sec);
+ return;
+ }
+
+ /* RFC 822 date format; as strftime '%a, %d %b %Y %T GMT' */
+
+ /* 29 chars plus null term */
+ apr_snprintf(buf, buflen, "%s, %.2d %s %d %.2d:%.2d:%.2d GMT",
+ apr_day_snames[tms.tm_wday],
+ tms.tm_mday, apr_month_snames[tms.tm_mon],
+ tms.tm_year + 1900,
+ tms.tm_hour, tms.tm_min, tms.tm_sec);
+}
+
+/* Copy or move src to dst; src_finfo is used to propagate permissions
+ * bits across if non-NULL; dst_finfo must be non-NULL iff dst already
+ * exists. */
+static dav_error * dav_fs_copymove_file(
+ int is_move,
+ apr_pool_t * p,
+ const char *src,
+ const char *dst,
+ const apr_finfo_t *src_finfo,
+ const apr_finfo_t *dst_finfo,
+ dav_buffer *pbuf)
+{
+ dav_buffer work_buf = { 0 };
+ apr_file_t *inf = NULL;
+ apr_file_t *outf = NULL;
+ apr_status_t status;
+ apr_fileperms_t perms;
+
+ if (pbuf == NULL)
+ pbuf = &work_buf;
+
+ /* Determine permissions to use for destination */
+ if (src_finfo && src_finfo->valid & APR_FINFO_PROT
+ && src_finfo->protection & APR_UEXECUTE) {
+ perms = src_finfo->protection;
+
+ if (dst_finfo != NULL) {
+ /* chmod it if it already exist */
+ if ((status = apr_file_perms_set(dst, perms)) != APR_SUCCESS) {
+ return dav_new_error(p, HTTP_INTERNAL_SERVER_ERROR, 0, status,
+ "Could not set permissions on destination");
+ }
+ }
+ }
+ else {
+ perms = APR_OS_DEFAULT;
+ }
+
+ dav_set_bufsize(p, pbuf, DAV_FS_COPY_BLOCKSIZE);
+
+ if ((status = apr_file_open(&inf, src, APR_READ | APR_BINARY,
+ APR_OS_DEFAULT, p)) != APR_SUCCESS) {
+ /* ### use something besides 500? */
+ return dav_new_error(p, HTTP_INTERNAL_SERVER_ERROR, 0, status,
+ "Could not open file for reading");
+ }
+
+ /* ### do we need to deal with the umask? */
+ status = apr_file_open(&outf, dst, APR_WRITE | APR_CREATE | APR_TRUNCATE
+ | APR_BINARY, perms, p);
+ if (status != APR_SUCCESS) {
+ apr_file_close(inf);
+
+ return dav_new_error(p, MAP_IO2HTTP(status), 0, status,
+ "Could not open file for writing");
+ }
+
+ while (1) {
+ apr_size_t len = DAV_FS_COPY_BLOCKSIZE;
+
+ status = apr_file_read(inf, pbuf->buf, &len);
+ if (status != APR_SUCCESS && status != APR_EOF) {
+ apr_status_t lcl_status;
+
+ apr_file_close(inf);
+ apr_file_close(outf);
+
+ if ((lcl_status = apr_file_remove(dst, p)) != APR_SUCCESS) {
+ /* ### ACK! Inconsistent state... */
+
+ /* ### use something besides 500? */
+ return dav_new_error(p, HTTP_INTERNAL_SERVER_ERROR, 0,
+ lcl_status,
+ "Could not delete output after read "
+ "failure. Server is now in an "
+ "inconsistent state.");
+ }
+
+ /* ### use something besides 500? */
+ return dav_new_error(p, HTTP_INTERNAL_SERVER_ERROR, 0, status,
+ "Could not read input file");
+ }
+
+ if (status == APR_EOF)
+ break;
+
+ /* write any bytes that were read */
+ status = apr_file_write_full(outf, pbuf->buf, len, NULL);
+ if (status != APR_SUCCESS) {
+ apr_status_t lcl_status;
+
+ apr_file_close(inf);
+ apr_file_close(outf);
+
+ if ((lcl_status = apr_file_remove(dst, p)) != APR_SUCCESS) {
+ /* ### ACK! Inconsistent state... */
+
+ /* ### use something besides 500? */
+ return dav_new_error(p, HTTP_INTERNAL_SERVER_ERROR, 0,
+ lcl_status,
+ "Could not delete output after write "
+ "failure. Server is now in an "
+ "inconsistent state.");
+ }
+
+ return dav_new_error(p, MAP_IO2HTTP(status), 0, status,
+ "Could not write output file");
+ }
+ }
+
+ apr_file_close(inf);
+ apr_file_close(outf);
+
+ if (is_move && (status = apr_file_remove(src, p)) != APR_SUCCESS) {
+ dav_error *err;
+ apr_status_t lcl_status;
+
+ if (APR_STATUS_IS_ENOENT(status)) {
+ /*
+ * Something is wrong here but the result is what we wanted.
+ * We definitely should not remove the destination file.
+ */
+ err = dav_new_error(p, HTTP_INTERNAL_SERVER_ERROR, 0, status,
+ apr_psprintf(p, "Could not remove source "
+ "file %s after move to %s. The "
+ "server may be in an "
+ "inconsistent state.", src, dst));
+ return err;
+ }
+ else if ((lcl_status = apr_file_remove(dst, p)) != APR_SUCCESS) {
+ /* ### ACK. this creates an inconsistency. do more!? */
+
+ /* ### use something besides 500? */
+ return dav_new_error(p, HTTP_INTERNAL_SERVER_ERROR, 0, lcl_status,
+ "Could not remove source or destination "
+ "file. Server is now in an inconsistent "
+ "state.");
+ }
+
+ /* ### use something besides 500? */
+ err = dav_new_error(p, HTTP_INTERNAL_SERVER_ERROR, 0, status,
+ "Could not remove source file after move. "
+ "Destination was removed to ensure consistency.");
+ return err;
+ }
+
+ return NULL;
+}
+
+/* copy/move a file from within a state dir to another state dir */
+/* ### need more buffers to replace the pool argument */
+static dav_error * dav_fs_copymove_state(
+ int is_move,
+ apr_pool_t * p,
+ const char *src_dir, const char *src_file,
+ const char *dst_dir, const char *dst_file,
+ dav_buffer *pbuf)
+{
+ apr_finfo_t src_finfo; /* finfo for source file */
+ apr_finfo_t dst_state_finfo; /* finfo for STATE directory */
+ apr_status_t rv;
+ const char *src;
+ const char *dst;
+
+ /* build the propset pathname for the source file */
+ src = apr_pstrcat(p, src_dir, "/" DAV_FS_STATE_DIR "/", src_file, NULL);
+
+ /* the source file doesn't exist */
+ rv = apr_stat(&src_finfo, src, APR_FINFO_NORM, p);
+ if (rv != APR_SUCCESS && rv != APR_INCOMPLETE) {
+ return NULL;
+ }
+
+ /* build the pathname for the destination state dir */
+ dst = apr_pstrcat(p, dst_dir, "/" DAV_FS_STATE_DIR, NULL);
+
+ /* ### do we need to deal with the umask? */
+
+ /* ensure that it exists */
+ rv = apr_dir_make(dst, APR_OS_DEFAULT, p);
+ if (rv != APR_SUCCESS) {
+ if (!APR_STATUS_IS_EEXIST(rv)) {
+ /* ### use something besides 500? */
+ return dav_new_error(p, HTTP_INTERNAL_SERVER_ERROR, 0, rv,
+ "Could not create internal state directory");
+ }
+ }
+
+ /* get info about the state directory */
+ rv = apr_stat(&dst_state_finfo, dst, APR_FINFO_NORM, p);
+ if (rv != APR_SUCCESS && rv != APR_INCOMPLETE) {
+ /* Ack! Where'd it go? */
+ /* ### use something besides 500? */
+ return dav_new_error(p, HTTP_INTERNAL_SERVER_ERROR, 0, rv,
+ "State directory disappeared");
+ }
+
+ /* The mkdir() may have failed because a *file* exists there already */
+ if (dst_state_finfo.filetype != APR_DIR) {
+ /* ### try to recover by deleting this file? (and mkdir again) */
+ /* ### use something besides 500? */
+ return dav_new_error(p, HTTP_INTERNAL_SERVER_ERROR, 0, 0,
+ "State directory is actually a file");
+ }
+
+ /* append the target file to the state directory pathname */
+ dst = apr_pstrcat(p, dst, "/", dst_file, NULL);
+
+ /* copy/move the file now */
+ if (is_move) {
+ /* try simple rename first */
+ rv = apr_file_rename(src, dst, p);
+ if (APR_STATUS_IS_EXDEV(rv)) {
+ return dav_fs_copymove_file(is_move, p, src, dst, NULL, NULL, pbuf);
+ }
+ if (rv != APR_SUCCESS) {
+ /* ### use something besides 500? */
+ return dav_new_error(p, HTTP_INTERNAL_SERVER_ERROR, 0, rv,
+ "Could not move state file.");
+ }
+ }
+ else
+ {
+ /* gotta copy (and delete) */
+ return dav_fs_copymove_file(is_move, p, src, dst, NULL, NULL, pbuf);
+ }
+
+ return NULL;
+}
+
+static dav_error *dav_fs_copymoveset(int is_move, apr_pool_t *p,
+ const dav_resource *src,
+ const dav_resource *dst,
+ dav_buffer *pbuf)
+{
+ const char *src_dir;
+ const char *src_file;
+ const char *src_state1;
+ const char *src_state2;
+ const char *dst_dir;
+ const char *dst_file;
+ const char *dst_state1;
+ const char *dst_state2;
+ dav_error *err;
+
+ /* Get directory and filename for resources */
+ /* ### should test these result values... */
+ (void) dav_fs_dir_file_name(src, &src_dir, &src_file);
+ (void) dav_fs_dir_file_name(dst, &dst_dir, &dst_file);
+
+ /* Get the corresponding state files for each resource */
+ dav_dbm_get_statefiles(p, src_file, &src_state1, &src_state2);
+ dav_dbm_get_statefiles(p, dst_file, &dst_state1, &dst_state2);
+#if DAV_DEBUG
+ if ((src_state2 != NULL && dst_state2 == NULL) ||
+ (src_state2 == NULL && dst_state2 != NULL)) {
+ return dav_new_error(p, HTTP_INTERNAL_SERVER_ERROR, 0, 0,
+ "DESIGN ERROR: dav_dbm_get_statefiles() "
+ "returned inconsistent results.");
+ }
+#endif
+
+ err = dav_fs_copymove_state(is_move, p,
+ src_dir, src_state1,
+ dst_dir, dst_state1,
+ pbuf);
+
+ if (err == NULL && src_state2 != NULL) {
+ err = dav_fs_copymove_state(is_move, p,
+ src_dir, src_state2,
+ dst_dir, dst_state2,
+ pbuf);
+
+ if (err != NULL) {
+ /* ### CRAP. inconsistency. */
+ /* ### should perform some cleanup at the target if we still
+ ### have the original files */
+
+ /* Change the error to reflect the bad server state. */
+ err->status = HTTP_INTERNAL_SERVER_ERROR;
+ err->desc =
+ "Could not fully copy/move the properties. "
+ "The server is now in an inconsistent state.";
+ }
+ }
+
+ return err;
+}
+
+static dav_error *dav_fs_deleteset(apr_pool_t *p, const dav_resource *resource)
+{
+ const char *dirpath;
+ const char *fname;
+ const char *state1;
+ const char *state2;
+ const char *pathname;
+ apr_status_t status;
+
+ /* Get directory, filename, and state-file names for the resource */
+ /* ### should test this result value... */
+ (void) dav_fs_dir_file_name(resource, &dirpath, &fname);
+ dav_dbm_get_statefiles(p, fname, &state1, &state2);
+
+ /* build the propset pathname for the file */
+ pathname = apr_pstrcat(p,
+ dirpath,
+ "/" DAV_FS_STATE_DIR "/",
+ state1,
+ NULL);
+
+ /* note: we may get ENOENT if the state dir is not present */
+ if ((status = apr_file_remove(pathname, p)) != APR_SUCCESS
+ && !APR_STATUS_IS_ENOENT(status)) {
+ return dav_new_error(p, HTTP_INTERNAL_SERVER_ERROR, 0, status,
+ "Could not remove properties.");
+ }
+
+ if (state2 != NULL) {
+ /* build the propset pathname for the file */
+ pathname = apr_pstrcat(p,
+ dirpath,
+ "/" DAV_FS_STATE_DIR "/",
+ state2,
+ NULL);
+
+ if ((status = apr_file_remove(pathname, p)) != APR_SUCCESS
+ && !APR_STATUS_IS_ENOENT(status)) {
+ /* ### CRAP. only removed half. */
+ return dav_new_error(p, HTTP_INTERNAL_SERVER_ERROR, 0, status,
+ "Could not fully remove properties. "
+ "The server is now in an inconsistent "
+ "state.");
+ }
+ }
+
+ return NULL;
+}
+
+/* --------------------------------------------------------------------
+**
+** REPOSITORY HOOK FUNCTIONS
+*/
+
+static dav_error * dav_fs_get_resource(
+ request_rec *r,
+ const char *root_dir,
+ const char *label,
+ int use_checked_in,
+ dav_resource **result_resource)
+{
+ dav_resource_private *ctx;
+ dav_resource *resource;
+ char *s;
+ char *filename;
+ apr_size_t len;
+
+ /* ### optimize this into a single allocation! */
+
+ /* Create private resource context descriptor */
+ ctx = apr_pcalloc(r->pool, sizeof(*ctx));
+ ctx->finfo = r->finfo;
+ ctx->r = r;
+
+ /* ### this should go away */
+ ctx->pool = r->pool;
+
+ /* Preserve case on OSes which fold canonical filenames */
+#if 0
+ /* ### not available in Apache 2.0 yet */
+ filename = r->case_preserved_filename;
+#else
+ filename = r->filename;
+#endif
+
+ /*
+ ** If there is anything in the path_info, then this indicates that the
+ ** entire path was not used to specify the file/dir. We want to append
+ ** it onto the filename so that we get a "valid" pathname for null
+ ** resources.
+ */
+ s = apr_pstrcat(r->pool, filename, r->path_info, NULL);
+
+ /* make sure the pathname does not have a trailing "/" */
+ len = strlen(s);
+ if (len > 1 && s[len - 1] == '/') {
+ s[len - 1] = '\0';
+ }
+ ctx->pathname = s;
+
+ /* Create resource descriptor */
+ resource = apr_pcalloc(r->pool, sizeof(*resource));
+ resource->type = DAV_RESOURCE_TYPE_REGULAR;
+ resource->info = ctx;
+ resource->hooks = &dav_hooks_repository_fs;
+ resource->pool = r->pool;
+
+ /* make sure the URI does not have a trailing "/" */
+ len = strlen(r->uri);
+ if (len > 1 && r->uri[len - 1] == '/') {
+ s = apr_pstrmemdup(r->pool, r->uri, len-1);
+ resource->uri = s;
+ }
+ else {
+ resource->uri = r->uri;
+ }
+
+ if (r->finfo.filetype != APR_NOFILE) {
+ resource->exists = 1;
+ resource->collection = r->finfo.filetype == APR_DIR;
+
+ /* unused info in the URL will indicate a null resource */
+
+ if (r->path_info != NULL && *r->path_info != '\0') {
+ if (resource->collection) {
+ /* only a trailing "/" is allowed */
+ if (*r->path_info != '/' || r->path_info[1] != '\0') {
+
+ /*
+ ** This URL/filename represents a locknull resource or
+ ** possibly a destination of a MOVE/COPY
+ */
+ resource->exists = 0;
+ resource->collection = 0;
+ }
+ }
+ else
+ {
+ /*
+ ** The base of the path refers to a file -- nothing should
+ ** be in path_info. The resource is simply an error: it
+ ** can't be a null or a locknull resource.
+ */
+ return dav_new_error(r->pool, HTTP_BAD_REQUEST, 0, 0,
+ "The URL contains extraneous path "
+ "components. The resource could not "
+ "be identified.");
+ }
+
+ /* retain proper integrity across the structures */
+ if (!resource->exists) {
+ ctx->finfo.filetype = APR_NOFILE;
+ }
+ }
+ }
+
+ *result_resource = resource;
+ return NULL;
+}
+
+static dav_error * dav_fs_get_parent_resource(const dav_resource *resource,
+ dav_resource **result_parent)
+{
+ dav_resource_private *ctx = resource->info;
+ dav_resource_private *parent_ctx;
+ dav_resource *parent_resource;
+ apr_status_t rv;
+ char *dirpath;
+ const char *testroot;
+ const char *testpath;
+
+ /* If we're at the root of the URL space, then there is no parent. */
+ if (strcmp(resource->uri, "/") == 0) {
+ *result_parent = NULL;
+ return NULL;
+ }
+
+ /* If given resource is root, then there is no parent.
+ * Unless we can retrieve the filepath root, this is
+ * intendend to fail. If we split the root and
+ * no path info remains, then we also fail.
+ */
+ testpath = ctx->pathname;
+ rv = apr_filepath_root(&testroot, &testpath, 0, ctx->pool);
+ if ((rv != APR_SUCCESS && rv != APR_ERELATIVE)
+ || !testpath || !*testpath) {
+ *result_parent = NULL;
+ return NULL;
+ }
+
+ /* ### optimize this into a single allocation! */
+
+ /* Create private resource context descriptor */
+ parent_ctx = apr_pcalloc(ctx->pool, sizeof(*parent_ctx));
+
+ /* ### this should go away */
+ parent_ctx->pool = ctx->pool;
+
+ dirpath = ap_make_dirstr_parent(ctx->pool, ctx->pathname);
+ if (strlen(dirpath) > 1 && dirpath[strlen(dirpath) - 1] == '/')
+ dirpath[strlen(dirpath) - 1] = '\0';
+ parent_ctx->pathname = dirpath;
+
+ parent_resource = apr_pcalloc(ctx->pool, sizeof(*parent_resource));
+ parent_resource->info = parent_ctx;
+ parent_resource->collection = 1;
+ parent_resource->hooks = &dav_hooks_repository_fs;
+ parent_resource->pool = resource->pool;
+
+ if (resource->uri != NULL) {
+ char *uri = ap_make_dirstr_parent(ctx->pool, resource->uri);
+ if (strlen(uri) > 1 && uri[strlen(uri) - 1] == '/')
+ uri[strlen(uri) - 1] = '\0';
+ parent_resource->uri = uri;
+ }
+
+ rv = apr_stat(&parent_ctx->finfo, parent_ctx->pathname,
+ APR_FINFO_NORM, ctx->pool);
+ if (rv == APR_SUCCESS || rv == APR_INCOMPLETE) {
+ parent_resource->exists = 1;
+ }
+
+ *result_parent = parent_resource;
+ return NULL;
+}
+
+static int dav_fs_is_same_resource(
+ const dav_resource *res1,
+ const dav_resource *res2)
+{
+ dav_resource_private *ctx1 = res1->info;
+ dav_resource_private *ctx2 = res2->info;
+
+ if (res1->hooks != res2->hooks)
+ return 0;
+
+ if ((ctx1->finfo.filetype != APR_NOFILE) && (ctx2->finfo.filetype != APR_NOFILE)
+ && (ctx1->finfo.valid & ctx2->finfo.valid & APR_FINFO_INODE)) {
+ return ctx1->finfo.inode == ctx2->finfo.inode;
+ }
+ else {
+ return strcmp(ctx1->pathname, ctx2->pathname) == 0;
+ }
+}
+
+static int dav_fs_is_parent_resource(
+ const dav_resource *res1,
+ const dav_resource *res2)
+{
+ dav_resource_private *ctx1 = res1->info;
+ dav_resource_private *ctx2 = res2->info;
+ apr_size_t len1 = strlen(ctx1->pathname);
+ apr_size_t len2;
+
+ if (res1->hooks != res2->hooks)
+ return 0;
+
+ /* it is safe to use ctx2 now */
+ len2 = strlen(ctx2->pathname);
+
+ return (len2 > len1
+ && memcmp(ctx1->pathname, ctx2->pathname, len1) == 0
+ && ctx2->pathname[len1] == '/');
+}
+
+static apr_status_t tmpfile_cleanup(void *data)
+{
+ dav_stream *ds = data;
+ if (ds->temppath) {
+ apr_file_remove(ds->temppath, ds->p);
+ }
+ return APR_SUCCESS;
+}
+
+/* custom mktemp that creates the file with APR_OS_DEFAULT permissions */
+static apr_status_t dav_fs_mktemp(apr_file_t **fp, char *templ, apr_pool_t *p)
+{
+ apr_status_t rv;
+ int num = ((getpid() << 7) + (apr_uintptr_t)templ % (1 << 16) ) %
+ ( 1 << 23 ) ;
+ char *numstr = templ + strlen(templ) - 6;
+
+ ap_assert(numstr >= templ);
+
+ do {
+ num = (num + 1) % ( 1 << 23 );
+ apr_snprintf(numstr, 7, "%06x", num);
+ rv = apr_file_open(fp, templ,
+ APR_WRITE | APR_CREATE | APR_BINARY | APR_EXCL,
+ APR_OS_DEFAULT, p);
+ } while (APR_STATUS_IS_EEXIST(rv));
+
+ return rv;
+}
+
+static dav_error * dav_fs_open_stream(const dav_resource *resource,
+ dav_stream_mode mode,
+ dav_stream **stream)
+{
+ apr_pool_t *p = resource->info->pool;
+ dav_stream *ds = apr_pcalloc(p, sizeof(*ds));
+ apr_int32_t flags;
+ apr_status_t rv;
+
+ switch (mode) {
+ default:
+ flags = APR_READ | APR_BINARY;
+ break;
+
+ case DAV_MODE_WRITE_TRUNC:
+ flags = APR_WRITE | APR_CREATE | APR_TRUNCATE | APR_BINARY;
+ break;
+ case DAV_MODE_WRITE_SEEKABLE:
+ flags = APR_WRITE | APR_CREATE | APR_BINARY;
+ break;
+ }
+
+ ds->p = p;
+ ds->pathname = resource->info->pathname;
+ ds->temppath = NULL;
+ ds->unlink_on_error = 0;
+
+ if (mode == DAV_MODE_WRITE_TRUNC) {
+ ds->temppath = apr_pstrcat(p, ap_make_dirstr_parent(p, ds->pathname),
+ DAV_FS_TMP_PREFIX "XXXXXX", NULL);
+ rv = dav_fs_mktemp(&ds->f, ds->temppath, ds->p);
+ apr_pool_cleanup_register(p, ds, tmpfile_cleanup,
+ apr_pool_cleanup_null);
+ }
+ else if (mode == DAV_MODE_WRITE_SEEKABLE) {
+ rv = apr_file_open(&ds->f, ds->pathname, flags | APR_FOPEN_EXCL,
+ APR_OS_DEFAULT, ds->p);
+ if (rv == APR_SUCCESS) {
+ /* we have created a new file */
+ ds->unlink_on_error = 1;
+ }
+ else if (APR_STATUS_IS_EEXIST(rv)) {
+ rv = apr_file_open(&ds->f, ds->pathname, flags, APR_OS_DEFAULT,
+ ds->p);
+ if (rv != APR_SUCCESS) {
+ return dav_new_error(p, MAP_IO2HTTP(rv), 0, rv,
+ apr_psprintf(p, "Could not open an existing "
+ "resource for writing: %s.",
+ ds->pathname));
+ }
+ }
+ }
+ else {
+ rv = apr_file_open(&ds->f, ds->pathname, flags, APR_OS_DEFAULT, ds->p);
+ if (rv != APR_SUCCESS) {
+ return dav_new_error(p, MAP_IO2HTTP(rv), 0, rv,
+ apr_psprintf(p, "Could not open an existing "
+ "resource for reading: %s.",
+ ds->pathname));
+ }
+ }
+
+ if (rv != APR_SUCCESS) {
+ return dav_new_error(p, MAP_IO2HTTP(rv), 0, rv,
+ apr_psprintf(p, "An error occurred while opening "
+ "a resource for writing: %s.",
+ ds->pathname));
+ }
+
+ /* (APR registers cleanups for the fd with the pool) */
+
+ *stream = ds;
+ return NULL;
+}
+
+static dav_error * dav_fs_close_stream(dav_stream *stream, int commit)
+{
+ apr_status_t rv;
+
+ apr_file_close(stream->f);
+
+ if (!commit) {
+ if (stream->temppath) {
+ apr_pool_cleanup_run(stream->p, stream, tmpfile_cleanup);
+ }
+ else if (stream->unlink_on_error) {
+ if ((rv = apr_file_remove(stream->pathname, stream->p))
+ != APR_SUCCESS) {
+ /* ### use a better description? */
+ return dav_new_error(stream->p, HTTP_INTERNAL_SERVER_ERROR, 0,
+ rv,
+ "There was a problem removing (rolling "
+ "back) the resource "
+ "when it was being closed.");
+ }
+ }
+ }
+ else if (stream->temppath) {
+ rv = apr_file_rename(stream->temppath, stream->pathname, stream->p);
+ if (rv) {
+ return dav_new_error(stream->p, HTTP_INTERNAL_SERVER_ERROR, 0, rv,
+ "There was a problem writing the file "
+ "atomically after writes.");
+ }
+ apr_pool_cleanup_kill(stream->p, stream, tmpfile_cleanup);
+ }
+
+ return NULL;
+}
+
+static dav_error * dav_fs_write_stream(dav_stream *stream,
+ const void *buf, apr_size_t bufsize)
+{
+ apr_status_t status;
+
+ status = apr_file_write_full(stream->f, buf, bufsize, NULL);
+ if (APR_STATUS_IS_ENOSPC(status)) {
+ return dav_new_error(stream->p, HTTP_INSUFFICIENT_STORAGE, 0, status,
+ "There is not enough storage to write to "
+ "this resource.");
+ }
+ else if (status != APR_SUCCESS) {
+ /* ### use something besides 500? */
+ return dav_new_error(stream->p, HTTP_INTERNAL_SERVER_ERROR, 0, status,
+ "An error occurred while writing to a "
+ "resource.");
+ }
+ return NULL;
+}
+
+static dav_error * dav_fs_seek_stream(dav_stream *stream, apr_off_t abs_pos)
+{
+ apr_status_t status;
+
+ if ((status = apr_file_seek(stream->f, APR_SET, &abs_pos))
+ != APR_SUCCESS) {
+ /* ### should check whether apr_file_seek set abs_pos was set to the
+ * correct position? */
+ /* ### use something besides 500? */
+ return dav_new_error(stream->p, HTTP_INTERNAL_SERVER_ERROR, 0, status,
+ "Could not seek to specified position in the "
+ "resource.");
+ }
+ return NULL;
+}
+
+
+#if DEBUG_GET_HANDLER
+
+/* only define set_headers() and deliver() for debug purposes */
+
+
+static dav_error * dav_fs_set_headers(request_rec *r,
+ const dav_resource *resource)
+{
+ /* ### this function isn't really used since we have a get_pathname */
+ if (!resource->exists)
+ return NULL;
+
+ /* make sure the proper mtime is in the request record */
+ ap_update_mtime(r, resource->info->finfo.mtime);
+
+ /* ### note that these use r->filename rather than <resource> */
+ ap_set_last_modified(r);
+ ap_set_etag(r);
+
+ /* we accept byte-ranges */
+ ap_set_accept_ranges(r);
+
+ /* set up the Content-Length header */
+ ap_set_content_length(r, resource->info->finfo.size);
+
+ /* ### how to set the content type? */
+ /* ### until this is resolved, the Content-Type header is busted */
+
+ return NULL;
+}
+
+static dav_error * dav_fs_deliver(const dav_resource *resource,
+ ap_filter_t *output)
+{
+ apr_pool_t *pool = resource->pool;
+ apr_bucket_brigade *bb;
+ apr_file_t *fd;
+ apr_status_t status;
+ apr_bucket *bkt;
+
+ /* Check resource type */
+ if (resource->type != DAV_RESOURCE_TYPE_REGULAR
+ && resource->type != DAV_RESOURCE_TYPE_VERSION
+ && resource->type != DAV_RESOURCE_TYPE_WORKING) {
+ return dav_new_error(pool, HTTP_CONFLICT, 0, 0,
+ "Cannot GET this type of resource.");
+ }
+ if (resource->collection) {
+ return dav_new_error(pool, HTTP_CONFLICT, 0, 0,
+ "There is no default response to GET for a "
+ "collection.");
+ }
+
+ if ((status = apr_file_open(&fd, resource->info->pathname,
+ APR_READ | APR_BINARY, 0,
+ pool)) != APR_SUCCESS) {
+ return dav_new_error(pool, HTTP_FORBIDDEN, 0, status,
+ "File permissions deny server access.");
+ }
+
+ bb = apr_brigade_create(pool, output->c->bucket_alloc);
+
+ apr_brigade_insert_file(bb, fd, 0, resource->info->finfo.size, pool);
+
+ bkt = apr_bucket_eos_create(output->c->bucket_alloc);
+ APR_BRIGADE_INSERT_TAIL(bb, bkt);
+
+ if ((status = ap_pass_brigade(output, bb)) != APR_SUCCESS) {
+ return dav_new_error(pool, AP_FILTER_ERROR, 0, status,
+ "Could not write contents to filter.");
+ }
+
+ return NULL;
+}
+
+#endif /* DEBUG_GET_HANDLER */
+
+
+static dav_error * dav_fs_create_collection(dav_resource *resource)
+{
+ dav_resource_private *ctx = resource->info;
+ apr_status_t status;
+
+ status = apr_dir_make(ctx->pathname, APR_OS_DEFAULT, ctx->pool);
+ if (APR_STATUS_IS_ENOSPC(status)) {
+ return dav_new_error(ctx->pool, HTTP_INSUFFICIENT_STORAGE, 0, status,
+ "There is not enough storage to create "
+ "this collection.");
+ }
+ else if (APR_STATUS_IS_ENOENT(status)) {
+ return dav_new_error(ctx->pool, HTTP_CONFLICT, 0, status,
+ "Cannot create collection; intermediate "
+ "collection does not exist.");
+ }
+ else if (status != APR_SUCCESS) {
+ /* ### refine this error message? */
+ return dav_new_error(ctx->pool, HTTP_FORBIDDEN, 0, status,
+ "Unable to create collection.");
+ }
+
+ /* update resource state to show it exists as a collection */
+ resource->exists = 1;
+ resource->collection = 1;
+
+ return NULL;
+}
+
+static dav_error * dav_fs_copymove_walker(dav_walk_resource *wres,
+ int calltype)
+{
+ apr_status_t status;
+ dav_fs_copymove_walk_ctx *ctx = wres->walk_ctx;
+ dav_resource_private *srcinfo = wres->resource->info;
+ dav_resource_private *dstinfo = ctx->res_dst->info;
+ dav_error *err = NULL;
+
+ if (wres->resource->collection) {
+ if (calltype == DAV_CALLTYPE_POSTFIX) {
+ /* Postfix call for MOVE. delete the source dir.
+ * Note: when copying, we do not enable the postfix-traversal.
+ */
+ /* ### we are ignoring any error here; what should we do? */
+ (void) apr_dir_remove(srcinfo->pathname, ctx->pool);
+ }
+ else {
+ /* copy/move of a collection. Create the new, target collection */
+ if ((status = apr_dir_make(dstinfo->pathname, APR_OS_DEFAULT,
+ ctx->pool)) != APR_SUCCESS) {
+ /* ### assume it was a permissions problem */
+ /* ### need a description here */
+ err = dav_new_error(ctx->pool, HTTP_FORBIDDEN, 0, status, NULL);
+ }
+ }
+ }
+ else {
+ err = dav_fs_copymove_file(ctx->is_move, ctx->pool,
+ srcinfo->pathname, dstinfo->pathname,
+ &srcinfo->finfo,
+ ctx->res_dst->exists ? &dstinfo->finfo : NULL,
+ &ctx->work_buf);
+ /* ### push a higher-level description? */
+ }
+
+ /*
+ ** If we have a "not so bad" error, then it might need to go into a
+ ** multistatus response.
+ **
+ ** For a MOVE, it will always go into the multistatus. It could be
+ ** that everything has been moved *except* for the root. Using a
+ ** multistatus (with no errors for the other resources) will signify
+ ** this condition.
+ **
+ ** For a COPY, we are traversing in a prefix fashion. If the root fails,
+ ** then we can just bail out now.
+ */
+ if (err != NULL
+ && !ap_is_HTTP_SERVER_ERROR(err->status)
+ && (ctx->is_move
+ || !dav_fs_is_same_resource(wres->resource, ctx->root))) {
+ /* ### use errno to generate DAV:responsedescription? */
+ dav_add_response(wres, err->status, NULL);
+
+ /* the error is in the multistatus now. do not stop the traversal. */
+ return NULL;
+ }
+
+ return err;
+}
+
+static dav_error *dav_fs_copymove_resource(
+ int is_move,
+ const dav_resource *src,
+ const dav_resource *dst,
+ int depth,
+ dav_response **response)
+{
+ dav_error *err = NULL;
+ dav_buffer work_buf = { 0 };
+
+ *response = NULL;
+
+ /* if a collection, recursively copy/move it and its children,
+ * including the state dirs
+ */
+ if (src->collection) {
+ dav_walk_params params = { 0 };
+ dav_response *multi_status;
+
+ params.walk_type = DAV_WALKTYPE_NORMAL | DAV_WALKTYPE_HIDDEN;
+ params.func = dav_fs_copymove_walker;
+ params.pool = src->info->pool;
+ params.root = src;
+
+ /* params.walk_ctx is managed by dav_fs_internal_walk() */
+
+ /* postfix is needed for MOVE to delete source dirs */
+ if (is_move)
+ params.walk_type |= DAV_WALKTYPE_POSTFIX;
+
+ /* note that we return the error OR the multistatus. never both */
+
+ if ((err = dav_fs_internal_walk(&params, depth, is_move, dst,
+ &multi_status)) != NULL) {
+ /* on a "real" error, then just punt. nothing else to do. */
+ return err;
+ }
+
+ if ((*response = multi_status) != NULL) {
+ /* some multistatus responses exist. wrap them in a 207 */
+ return dav_new_error(src->info->pool, HTTP_MULTI_STATUS, 0, 0,
+ "Error(s) occurred on some resources during "
+ "the COPY/MOVE process.");
+ }
+
+ return NULL;
+ }
+
+ /* not a collection */
+ if ((err = dav_fs_copymove_file(is_move, src->info->pool,
+ src->info->pathname, dst->info->pathname,
+ &src->info->finfo,
+ dst->exists ? &dst->info->finfo : NULL,
+ &work_buf)) != NULL) {
+ /* ### push a higher-level description? */
+ return err;
+ }
+
+ /* copy/move properties as well */
+ return dav_fs_copymoveset(is_move, src->info->pool, src, dst, &work_buf);
+}
+
+static dav_error * dav_fs_copy_resource(
+ const dav_resource *src,
+ dav_resource *dst,
+ int depth,
+ dav_response **response)
+{
+ dav_error *err;
+
+#if DAV_DEBUG
+ if (src->hooks != dst->hooks) {
+ /*
+ ** ### strictly speaking, this is a design error; we should not
+ ** ### have reached this point.
+ */
+ return dav_new_error(src->info->pool, HTTP_INTERNAL_SERVER_ERROR, 0, 0,
+ "DESIGN ERROR: a mix of repositories "
+ "was passed to copy_resource.");
+ }
+#endif
+
+ if ((err = dav_fs_copymove_resource(0, src, dst, depth,
+ response)) == NULL) {
+
+ /* update state of destination resource to show it exists */
+ dst->exists = 1;
+ dst->collection = src->collection;
+ }
+
+ return err;
+}
+
+static dav_error * dav_fs_move_resource(
+ dav_resource *src,
+ dav_resource *dst,
+ dav_response **response)
+{
+ dav_resource_private *srcinfo = src->info;
+ dav_resource_private *dstinfo = dst->info;
+ dav_error *err;
+ apr_status_t rv;
+
+#if DAV_DEBUG
+ if (src->hooks != dst->hooks) {
+ /*
+ ** ### strictly speaking, this is a design error; we should not
+ ** ### have reached this point.
+ */
+ return dav_new_error(src->info->pool, HTTP_INTERNAL_SERVER_ERROR, 0, 0,
+ "DESIGN ERROR: a mix of repositories "
+ "was passed to move_resource.");
+ }
+#endif
+
+
+ /* try rename first */
+ rv = apr_file_rename(srcinfo->pathname, dstinfo->pathname, srcinfo->pool);
+
+ /* if we can't simply rename, then do it the hard way... */
+ if (APR_STATUS_IS_EXDEV(rv)) {
+ if ((err = dav_fs_copymove_resource(1, src, dst, DAV_INFINITY,
+ response)) == NULL) {
+ /* update resource states */
+ dst->exists = 1;
+ dst->collection = src->collection;
+ src->exists = 0;
+ src->collection = 0;
+ }
+
+ return err;
+ }
+
+ /* no multistatus response */
+ *response = NULL;
+
+ if (rv != APR_SUCCESS) {
+ /* ### should have a better error than this. */
+ return dav_new_error(srcinfo->pool, HTTP_INTERNAL_SERVER_ERROR, 0, rv,
+ "Could not rename resource.");
+ }
+
+ /* Rename did work. Update resource states and move properties as well */
+ dst->exists = 1;
+ dst->collection = src->collection;
+ src->exists = 0;
+ src->collection = 0;
+
+ if ((err = dav_fs_copymoveset(1, src->info->pool,
+ src, dst, NULL)) == NULL) {
+ /* no error. we're done. go ahead and return now. */
+ return NULL;
+ }
+
+ /* error occurred during properties move; try to put resource back */
+ if (apr_file_rename(dstinfo->pathname, srcinfo->pathname,
+ srcinfo->pool) != APR_SUCCESS) {
+ /* couldn't put it back! */
+ return dav_push_error(srcinfo->pool,
+ HTTP_INTERNAL_SERVER_ERROR, 0,
+ "The resource was moved, but a failure "
+ "occurred during the move of its "
+ "properties. The resource could not be "
+ "restored to its original location. The "
+ "server is now in an inconsistent state.",
+ err);
+ }
+
+ /* update resource states again */
+ src->exists = 1;
+ src->collection = dst->collection;
+ dst->exists = 0;
+ dst->collection = 0;
+
+ /* resource moved back, but properties may be inconsistent */
+ return dav_push_error(srcinfo->pool,
+ HTTP_INTERNAL_SERVER_ERROR, 0,
+ "The resource was moved, but a failure "
+ "occurred during the move of its properties. "
+ "The resource was moved back to its original "
+ "location, but its properties may have been "
+ "partially moved. The server may be in an "
+ "inconsistent state.",
+ err);
+}
+
+static dav_error * dav_fs_delete_walker(dav_walk_resource *wres, int calltype)
+{
+ dav_resource_private *info = wres->resource->info;
+
+ /* do not attempt to remove a null resource,
+ * or a collection with children
+ */
+ if (wres->resource->exists &&
+ (!wres->resource->collection || calltype == DAV_CALLTYPE_POSTFIX)) {
+ /* try to remove the resource */
+ apr_status_t result;
+
+ result = wres->resource->collection
+ ? apr_dir_remove(info->pathname, wres->pool)
+ : apr_file_remove(info->pathname, wres->pool);
+
+ /*
+ ** If an error occurred, then add it to multistatus response.
+ ** Note that we add it for the root resource, too. It is quite
+ ** possible to delete the whole darn tree, yet fail on the root.
+ **
+ ** (also: remember we are deleting via a postfix traversal)
+ */
+ if (result != APR_SUCCESS) {
+ /* ### assume there is a permissions problem */
+
+ /* ### use errno to generate DAV:responsedescription? */
+ dav_add_response(wres, HTTP_FORBIDDEN, NULL);
+ }
+ }
+
+ return NULL;
+}
+
+static dav_error * dav_fs_remove_resource(dav_resource *resource,
+ dav_response **response)
+{
+ apr_status_t status;
+ dav_resource_private *info = resource->info;
+
+ *response = NULL;
+
+ /* if a collection, recursively remove it and its children,
+ * including the state dirs
+ */
+ if (resource->collection) {
+ dav_walk_params params = { 0 };
+ dav_error *err = NULL;
+ dav_response *multi_status;
+
+ params.walk_type = (DAV_WALKTYPE_NORMAL
+ | DAV_WALKTYPE_HIDDEN
+ | DAV_WALKTYPE_POSTFIX);
+ params.func = dav_fs_delete_walker;
+ params.pool = info->pool;
+ params.root = resource;
+
+ if ((err = dav_fs_walk(&params, DAV_INFINITY,
+ &multi_status)) != NULL) {
+ /* on a "real" error, then just punt. nothing else to do. */
+ return err;
+ }
+
+ if ((*response = multi_status) != NULL) {
+ /* some multistatus responses exist. wrap them in a 207 */
+ return dav_new_error(info->pool, HTTP_MULTI_STATUS, 0, 0,
+ "Error(s) occurred on some resources during "
+ "the deletion process.");
+ }
+
+ /* no errors... update resource state */
+ resource->exists = 0;
+ resource->collection = 0;
+
+ return NULL;
+ }
+
+ /* not a collection; remove the file and its properties */
+ if ((status = apr_file_remove(info->pathname, info->pool)) != APR_SUCCESS) {
+ /* ### put a description in here */
+ return dav_new_error(info->pool, HTTP_FORBIDDEN, 0, status, NULL);
+ }
+
+ /* update resource state */
+ resource->exists = 0;
+ resource->collection = 0;
+
+ /* remove properties and return its result */
+ return dav_fs_deleteset(info->pool, resource);
+}
+
+/* ### move this to dav_util? */
+/* Walk recursively down through directories, *
+ * including lock-null resources as we go. */
+static dav_error * dav_fs_walker(dav_fs_walker_context *fsctx, int depth)
+{
+ const dav_walk_params *params = fsctx->params;
+ apr_pool_t *pool = params->pool;
+ apr_status_t status;
+ dav_error *err = NULL;
+ int isdir = fsctx->res1.collection;
+ apr_finfo_t dirent;
+ apr_dir_t *dirp;
+
+ /* ensure the context is prepared properly, then call the func */
+ err = (*params->func)(&fsctx->wres,
+ isdir
+ ? DAV_CALLTYPE_COLLECTION
+ : DAV_CALLTYPE_MEMBER);
+ if (err != NULL) {
+ return err;
+ }
+
+ if (depth == 0 || !isdir) {
+ return NULL;
+ }
+
+ /* put a trailing slash onto the directory, in preparation for appending
+ * files to it as we discovery them within the directory */
+ dav_check_bufsize(pool, &fsctx->path1, DAV_BUFFER_PAD);
+ fsctx->path1.buf[fsctx->path1.cur_len++] = '/';
+ fsctx->path1.buf[fsctx->path1.cur_len] = '\0'; /* in pad area */
+
+ /* if a secondary path is present, then do that, too */
+ if (fsctx->path2.buf != NULL) {
+ dav_check_bufsize(pool, &fsctx->path2, DAV_BUFFER_PAD);
+ fsctx->path2.buf[fsctx->path2.cur_len++] = '/';
+ fsctx->path2.buf[fsctx->path2.cur_len] = '\0'; /* in pad area */
+ }
+
+ /* Note: the URI should ALREADY have a trailing "/" */
+
+ /* for this first pass of files, all resources exist */
+ fsctx->res1.exists = 1;
+
+ /* a file is the default; we'll adjust if we hit a directory */
+ fsctx->res1.collection = 0;
+ fsctx->res2.collection = 0;
+
+ /* open and scan the directory */
+ if ((status = apr_dir_open(&dirp, fsctx->path1.buf, pool)) != APR_SUCCESS) {
+ /* ### need a better error */
+ return dav_new_error(pool, HTTP_NOT_FOUND, 0, status, NULL);
+ }
+ while ((apr_dir_read(&dirent, APR_FINFO_DIRENT, dirp)) == APR_SUCCESS) {
+ apr_size_t len;
+
+ len = strlen(dirent.name);
+
+ /* avoid recursing into our current, parent, or state directories */
+ if (dirent.name[0] == '.'
+ && (len == 1 || (dirent.name[1] == '.' && len == 2))) {
+ continue;
+ }
+
+ if (params->walk_type & DAV_WALKTYPE_AUTH) {
+ /* ### need to authorize each file */
+ /* ### example: .htaccess is normally configured to fail auth */
+
+ /* stuff in the state directory and temp files are never authorized! */
+ if (!strcmp(dirent.name, DAV_FS_STATE_DIR) ||
+ !strncmp(dirent.name, DAV_FS_TMP_PREFIX,
+ strlen(DAV_FS_TMP_PREFIX))) {
+ continue;
+ }
+ }
+ /* skip the state dir and temp files unless a HIDDEN is performed */
+ if (!(params->walk_type & DAV_WALKTYPE_HIDDEN)
+ && (!strcmp(dirent.name, DAV_FS_STATE_DIR) ||
+ !strncmp(dirent.name, DAV_FS_TMP_PREFIX,
+ strlen(DAV_FS_TMP_PREFIX)))) {
+ continue;
+ }
+
+ /* append this file onto the path buffer (copy null term) */
+ dav_buffer_place_mem(pool, &fsctx->path1, dirent.name, len + 1, 0);
+
+ status = apr_stat(&fsctx->info1.finfo, fsctx->path1.buf,
+ DAV_FINFO_MASK, pool);
+ if (status != APR_SUCCESS && status != APR_INCOMPLETE) {
+ /* woah! where'd it go? */
+ /* ### should have a better error here */
+ err = dav_new_error(pool, HTTP_NOT_FOUND, 0, status, NULL);
+ break;
+ }
+
+ /* copy the file to the URI, too. NOTE: we will pad an extra byte
+ for the trailing slash later. */
+ dav_buffer_place_mem(pool, &fsctx->uri_buf, dirent.name, len + 1, 1);
+
+ /* if there is a secondary path, then do that, too */
+ if (fsctx->path2.buf != NULL) {
+ dav_buffer_place_mem(pool, &fsctx->path2, dirent.name, len + 1, 0);
+ }
+
+ /* set up the (internal) pathnames for the two resources */
+ fsctx->info1.pathname = fsctx->path1.buf;
+ fsctx->info2.pathname = fsctx->path2.buf;
+
+ /* set up the URI for the current resource */
+ fsctx->res1.uri = fsctx->uri_buf.buf;
+
+ /* ### for now, only process regular files (e.g. skip symlinks) */
+ if (fsctx->info1.finfo.filetype == APR_REG) {
+ /* call the function for the specified dir + file */
+ if ((err = (*params->func)(&fsctx->wres,
+ DAV_CALLTYPE_MEMBER)) != NULL) {
+ /* ### maybe add a higher-level description? */
+ break;
+ }
+ }
+ else if (fsctx->info1.finfo.filetype == APR_DIR) {
+ apr_size_t save_path_len = fsctx->path1.cur_len;
+ apr_size_t save_uri_len = fsctx->uri_buf.cur_len;
+ apr_size_t save_path2_len = fsctx->path2.cur_len;
+
+ /* adjust length to incorporate the subdir name */
+ fsctx->path1.cur_len += len;
+ fsctx->path2.cur_len += len;
+
+ /* adjust URI length to incorporate subdir and a slash */
+ fsctx->uri_buf.cur_len += len + 1;
+ fsctx->uri_buf.buf[fsctx->uri_buf.cur_len - 1] = '/';
+ fsctx->uri_buf.buf[fsctx->uri_buf.cur_len] = '\0';
+
+ /* switch over to a collection */
+ fsctx->res1.collection = 1;
+ fsctx->res2.collection = 1;
+
+ /* recurse on the subdir */
+ /* ### don't always want to quit on error from single child */
+ if ((err = dav_fs_walker(fsctx, depth - 1)) != NULL) {
+ /* ### maybe add a higher-level description? */
+ break;
+ }
+
+ /* put the various information back */
+ fsctx->path1.cur_len = save_path_len;
+ fsctx->path2.cur_len = save_path2_len;
+ fsctx->uri_buf.cur_len = save_uri_len;
+
+ fsctx->res1.collection = 0;
+ fsctx->res2.collection = 0;
+
+ /* assert: res1.exists == 1 */
+ }
+ }
+
+ /* ### check the return value of this? */
+ apr_dir_close(dirp);
+
+ if (err != NULL)
+ return err;
+
+ if (params->walk_type & DAV_WALKTYPE_LOCKNULL) {
+ apr_size_t offset = 0;
+
+ /* null terminate the directory name */
+ fsctx->path1.buf[fsctx->path1.cur_len - 1] = '\0';
+
+ /* Include any lock null resources found in this collection */
+ fsctx->res1.collection = 1;
+ if ((err = dav_fs_get_locknull_members(&fsctx->res1,
+ &fsctx->locknull_buf)) != NULL) {
+ /* ### maybe add a higher-level description? */
+ return err;
+ }
+
+ /* put a slash back on the end of the directory */
+ fsctx->path1.buf[fsctx->path1.cur_len - 1] = '/';
+
+ /* these are all non-existent (files) */
+ fsctx->res1.exists = 0;
+ fsctx->res1.collection = 0;
+ memset(&fsctx->info1.finfo, 0, sizeof(fsctx->info1.finfo));
+
+ while (offset < fsctx->locknull_buf.cur_len) {
+ apr_size_t len = strlen(fsctx->locknull_buf.buf + offset);
+ dav_lock *locks = NULL;
+
+ /*
+ ** Append the locknull file to the paths and the URI. Note that
+ ** we don't have to pad the URI for a slash since a locknull
+ ** resource is not a collection.
+ */
+ dav_buffer_place_mem(pool, &fsctx->path1,
+ fsctx->locknull_buf.buf + offset, len + 1, 0);
+ dav_buffer_place_mem(pool, &fsctx->uri_buf,
+ fsctx->locknull_buf.buf + offset, len + 1, 0);
+ if (fsctx->path2.buf != NULL) {
+ dav_buffer_place_mem(pool, &fsctx->path2,
+ fsctx->locknull_buf.buf + offset,
+ len + 1, 0);
+ }
+
+ /* set up the (internal) pathnames for the two resources */
+ fsctx->info1.pathname = fsctx->path1.buf;
+ fsctx->info2.pathname = fsctx->path2.buf;
+
+ /* set up the URI for the current resource */
+ fsctx->res1.uri = fsctx->uri_buf.buf;
+
+ /*
+ ** To prevent a PROPFIND showing an expired locknull
+ ** resource, query the lock database to force removal
+ ** of both the lock entry and .locknull, if necessary..
+ ** Sure, the query in PROPFIND would do this.. after
+ ** the locknull resource was already included in the
+ ** return.
+ **
+ ** NOTE: we assume the caller has opened the lock database
+ ** if they have provided DAV_WALKTYPE_LOCKNULL.
+ */
+ /* ### we should also look into opening it read-only and
+ ### eliding timed-out items from the walk, yet leaving
+ ### them in the locknull database until somebody opens
+ ### the thing writable.
+ */
+ /* ### probably ought to use has_locks. note the problem
+ ### mentioned above, though... we would traverse this as
+ ### a locknull, but then a PROPFIND would load the lock
+ ### info, causing a timeout and the locks would not be
+ ### reported. Therefore, a null resource would be returned
+ ### in the PROPFIND.
+ ###
+ ### alternative: just load unresolved locks. any direct
+ ### locks will be timed out (correct). any indirect will
+ ### not (correct; consider if a parent timed out -- the
+ ### timeout routines do not walk and remove indirects;
+ ### even the resolve func would probably fail when it
+ ### tried to find a timed-out direct lock).
+ */
+ if ((err = dav_lock_query(params->lockdb, &fsctx->res1,
+ &locks)) != NULL) {
+ /* ### maybe add a higher-level description? */
+ return err;
+ }
+
+ /* call the function for the specified dir + file */
+ if (locks != NULL &&
+ (err = (*params->func)(&fsctx->wres,
+ DAV_CALLTYPE_LOCKNULL)) != NULL) {
+ /* ### maybe add a higher-level description? */
+ return err;
+ }
+
+ offset += len + 1;
+ }
+
+ /* reset the exists flag */
+ fsctx->res1.exists = 1;
+ }
+
+ if (params->walk_type & DAV_WALKTYPE_POSTFIX) {
+ /* replace the dirs' trailing slashes with null terms */
+ fsctx->path1.buf[--fsctx->path1.cur_len] = '\0';
+ fsctx->uri_buf.buf[--fsctx->uri_buf.cur_len] = '\0';
+ if (fsctx->path2.buf != NULL) {
+ fsctx->path2.buf[--fsctx->path2.cur_len] = '\0';
+ }
+
+ /* this is a collection which exists */
+ fsctx->res1.collection = 1;
+
+ return (*params->func)(&fsctx->wres, DAV_CALLTYPE_POSTFIX);
+ }
+
+ return NULL;
+}
+
+static dav_error * dav_fs_internal_walk(const dav_walk_params *params,
+ int depth, int is_move,
+ const dav_resource *root_dst,
+ dav_response **response)
+{
+ dav_fs_walker_context fsctx = { 0 };
+ dav_error *err;
+ dav_fs_copymove_walk_ctx cm_ctx = { 0 };
+
+#if DAV_DEBUG
+ if ((params->walk_type & DAV_WALKTYPE_LOCKNULL) != 0
+ && params->lockdb == NULL) {
+ return dav_new_error(params->pool, HTTP_INTERNAL_SERVER_ERROR, 0, 0,
+ "DESIGN ERROR: walker called to walk locknull "
+ "resources, but a lockdb was not provided.");
+ }
+#endif
+
+ fsctx.params = params;
+ fsctx.wres.walk_ctx = params->walk_ctx;
+ fsctx.wres.pool = params->pool;
+
+ /* ### zero out versioned, working, baselined? */
+
+ fsctx.res1 = *params->root;
+ fsctx.res1.pool = params->pool;
+
+ fsctx.res1.info = &fsctx.info1;
+ fsctx.info1 = *params->root->info;
+
+ /* the pathname is stored in the path1 buffer */
+ dav_buffer_init(params->pool, &fsctx.path1, fsctx.info1.pathname);
+ fsctx.info1.pathname = fsctx.path1.buf;
+
+ if (root_dst != NULL) {
+ /* internal call from the COPY/MOVE code. set it up. */
+
+ fsctx.wres.walk_ctx = &cm_ctx;
+ cm_ctx.is_move = is_move;
+ cm_ctx.res_dst = &fsctx.res2;
+ cm_ctx.root = params->root;
+ cm_ctx.pool = params->pool;
+
+ fsctx.res2 = *root_dst;
+ fsctx.res2.exists = 0;
+ fsctx.res2.collection = 0;
+ fsctx.res2.uri = NULL; /* we don't track this */
+ fsctx.res2.pool = params->pool;
+
+ fsctx.res2.info = &fsctx.info2;
+ fsctx.info2 = *root_dst->info;
+
+ /* res2 does not exist -- clear its finfo structure */
+ memset(&fsctx.info2.finfo, 0, sizeof(fsctx.info2.finfo));
+
+ /* the pathname is stored in the path2 buffer */
+ dav_buffer_init(params->pool, &fsctx.path2, fsctx.info2.pathname);
+ fsctx.info2.pathname = fsctx.path2.buf;
+ }
+
+ /* prep the URI buffer */
+ dav_buffer_init(params->pool, &fsctx.uri_buf, params->root->uri);
+
+ /* if we have a directory, then ensure the URI has a trailing "/" */
+ if (fsctx.res1.collection
+ && fsctx.uri_buf.buf[fsctx.uri_buf.cur_len - 1] != '/') {
+
+ /* this will fall into the pad area */
+ fsctx.uri_buf.buf[fsctx.uri_buf.cur_len++] = '/';
+ fsctx.uri_buf.buf[fsctx.uri_buf.cur_len] = '\0';
+ }
+
+ /* the current resource's URI is stored in the uri_buf buffer */
+ fsctx.res1.uri = fsctx.uri_buf.buf;
+
+ /* point the callback's resource at our structure */
+ fsctx.wres.resource = &fsctx.res1;
+
+ /* always return the error, and any/all multistatus responses */
+ err = dav_fs_walker(&fsctx, depth);
+ *response = fsctx.wres.response;
+ return err;
+}
+
+static dav_error * dav_fs_walk(const dav_walk_params *params, int depth,
+ dav_response **response)
+{
+ /* always return the error, and any/all multistatus responses */
+ return dav_fs_internal_walk(params, depth, 0, NULL, response);
+}
+
+/* dav_fs_etag: Creates an etag for the file path.
+ */
+static const char *dav_fs_getetag(const dav_resource *resource)
+{
+ etag_rec er;
+
+ dav_resource_private *ctx = resource->info;
+
+ if (!resource->exists || !ctx->r) {
+ return "";
+ }
+
+ er.vlist_validator = NULL;
+ er.request_time = ctx->r->request_time;
+ er.finfo = &ctx->finfo;
+ er.pathname = ctx->pathname;
+ er.fd = NULL;
+ er.force_weak = 0;
+
+ return ap_make_etag_ex(ctx->r, &er);
+}
+
+static const dav_hooks_repository dav_hooks_repository_fs =
+{
+ DEBUG_GET_HANDLER, /* normally: special GET handling not required */
+ dav_fs_get_resource,
+ dav_fs_get_parent_resource,
+ dav_fs_is_same_resource,
+ dav_fs_is_parent_resource,
+ dav_fs_open_stream,
+ dav_fs_close_stream,
+ dav_fs_write_stream,
+ dav_fs_seek_stream,
+#if DEBUG_GET_HANDLER
+ dav_fs_set_headers,
+ dav_fs_deliver,
+#else
+ NULL,
+ NULL,
+#endif
+ dav_fs_create_collection,
+ dav_fs_copy_resource,
+ dav_fs_move_resource,
+ dav_fs_remove_resource,
+ dav_fs_walk,
+ dav_fs_getetag,
+ NULL,
+ dav_fs_get_request_rec,
+ dav_fs_pathname
+};
+
+static dav_prop_insert dav_fs_insert_prop(const dav_resource *resource,
+ int propid, dav_prop_insert what,
+ apr_text_header *phdr)
+{
+ const char *value;
+ const char *s;
+ apr_pool_t *p = resource->info->pool;
+ const dav_liveprop_spec *info;
+ long global_ns;
+
+ /* an HTTP-date can be 29 chars plus a null term */
+ /* a 64-bit size can be 20 chars plus a null term */
+ char buf[DAV_TIMEBUF_SIZE];
+
+ /*
+ ** None of FS provider properties are defined if the resource does not
+ ** exist. Just bail for this case.
+ **
+ ** Even though we state that the FS properties are not defined, the
+ ** client cannot store dead values -- we deny that thru the is_writable
+ ** hook function.
+ */
+ if (!resource->exists)
+ return DAV_PROP_INSERT_NOTDEF;
+
+ switch (propid) {
+ case DAV_PROPID_creationdate:
+ /*
+ ** Closest thing to a creation date. since we don't actually
+ ** perform the operations that would modify ctime (after we
+ ** create the file), then we should be pretty safe here.
+ */
+ dav_format_time(DAV_STYLE_ISO8601,
+ resource->info->finfo.ctime,
+ buf, sizeof(buf));
+ value = buf;
+ break;
+
+ case DAV_PROPID_getcontentlength:
+ /* our property, but not defined on collection resources */
+ if (resource->collection)
+ return DAV_PROP_INSERT_NOTDEF;
+
+ apr_snprintf(buf, sizeof(buf), "%" APR_OFF_T_FMT, resource->info->finfo.size);
+ value = buf;
+ break;
+
+ case DAV_PROPID_getetag:
+ value = dav_fs_getetag(resource);
+ break;
+
+ case DAV_PROPID_getlastmodified:
+ dav_format_time(DAV_STYLE_RFC822,
+ resource->info->finfo.mtime,
+ buf, sizeof(buf));
+ value = buf;
+ break;
+
+ case DAV_PROPID_FS_executable:
+ /* our property, but not defined on collection resources */
+ if (resource->collection)
+ return DAV_PROP_INSERT_NOTDEF;
+
+ /* our property, but not defined on this platform */
+ if (!(resource->info->finfo.valid & APR_FINFO_UPROT))
+ return DAV_PROP_INSERT_NOTDEF;
+
+ /* the files are "ours" so we only need to check owner exec privs */
+ if (resource->info->finfo.protection & APR_UEXECUTE)
+ value = "T";
+ else
+ value = "F";
+ break;
+
+ default:
+ /* ### what the heck was this property? */
+ return DAV_PROP_INSERT_NOTDEF;
+ }
+
+ /* assert: value != NULL */
+
+ /* get the information and global NS index for the property */
+ global_ns = dav_get_liveprop_info(propid, &dav_fs_liveprop_group, &info);
+
+ /* assert: info != NULL && info->name != NULL */
+
+ /* DBG3("FS: inserting lp%d:%s (local %d)", ns, scan->name, scan->ns); */
+
+ if (what == DAV_PROP_INSERT_VALUE) {
+ s = apr_psprintf(p, "<lp%ld:%s>%s</lp%ld:%s>" DEBUG_CR,
+ global_ns, info->name, value, global_ns, info->name);
+ }
+ else if (what == DAV_PROP_INSERT_NAME) {
+ s = apr_psprintf(p, "<lp%ld:%s/>" DEBUG_CR, global_ns, info->name);
+ }
+ else {
+ /* assert: what == DAV_PROP_INSERT_SUPPORTED */
+ s = apr_pstrcat(p,
+ "<D:supported-live-property D:name=\"",
+ info->name,
+ "\" D:namespace=\"",
+ dav_fs_namespace_uris[info->ns],
+ "\"/>" DEBUG_CR, NULL);
+ }
+ apr_text_append(p, phdr, s);
+
+ /* we inserted what was asked for */
+ return what;
+}
+
+static int dav_fs_is_writable(const dav_resource *resource, int propid)
+{
+ const dav_liveprop_spec *info;
+
+#ifdef DAV_FS_HAS_EXECUTABLE
+ /* if we have the executable property, and this isn't a collection,
+ then the property is writable. */
+ if (propid == DAV_PROPID_FS_executable && !resource->collection)
+ return 1;
+#endif
+
+ (void) dav_get_liveprop_info(propid, &dav_fs_liveprop_group, &info);
+ return info->is_writable;
+}
+
+static dav_error *dav_fs_patch_validate(const dav_resource *resource,
+ const apr_xml_elem *elem,
+ int operation,
+ void **context,
+ int *defer_to_dead)
+{
+ const apr_text *cdata;
+ const apr_text *f_cdata;
+ char value;
+ dav_elem_private *priv = elem->priv;
+
+ if (priv->propid != DAV_PROPID_FS_executable) {
+ *defer_to_dead = 1;
+ return NULL;
+ }
+
+ if (operation == DAV_PROP_OP_DELETE) {
+ return dav_new_error(resource->info->pool, HTTP_CONFLICT, 0, 0,
+ "The 'executable' property cannot be removed.");
+ }
+
+ cdata = elem->first_cdata.first;
+
+ /* ### hmm. this isn't actually looking at all the possible text items */
+ f_cdata = elem->first_child == NULL
+ ? NULL
+ : elem->first_child->following_cdata.first;
+
+ /* DBG3("name=%s cdata=%s f_cdata=%s",elem->name,cdata ? cdata->text : "[null]",f_cdata ? f_cdata->text : "[null]"); */
+
+ if (cdata == NULL) {
+ if (f_cdata == NULL) {
+ return dav_new_error(resource->info->pool, HTTP_CONFLICT, 0, 0,
+ "The 'executable' property expects a single "
+ "character, valued 'T' or 'F'. There was no "
+ "value submitted.");
+ }
+ cdata = f_cdata;
+ }
+ else if (f_cdata != NULL)
+ goto too_long;
+
+ if (cdata->next != NULL || strlen(cdata->text) != 1)
+ goto too_long;
+
+ value = cdata->text[0];
+ if (value != 'T' && value != 'F') {
+ return dav_new_error(resource->info->pool, HTTP_CONFLICT, 0, 0,
+ "The 'executable' property expects a single "
+ "character, valued 'T' or 'F'. The value "
+ "submitted is invalid.");
+ }
+
+ *context = (void *)((long)(value == 'T'));
+
+ return NULL;
+
+ too_long:
+ return dav_new_error(resource->info->pool, HTTP_CONFLICT, 0, 0,
+ "The 'executable' property expects a single "
+ "character, valued 'T' or 'F'. The value submitted "
+ "has too many characters.");
+
+}
+
+static dav_error *dav_fs_patch_exec(const dav_resource *resource,
+ const apr_xml_elem *elem,
+ int operation,
+ void *context,
+ dav_liveprop_rollback **rollback_ctx)
+{
+ long value = context != NULL;
+ apr_fileperms_t perms = resource->info->finfo.protection;
+ apr_status_t status;
+ long old_value = (perms & APR_UEXECUTE) != 0;
+
+ /* assert: prop == executable. operation == SET. */
+
+ /* don't do anything if there is no change. no rollback info either. */
+ /* DBG2("new value=%d (old=%d)", value, old_value); */
+ if (value == old_value)
+ return NULL;
+
+ perms &= ~APR_UEXECUTE;
+ if (value)
+ perms |= APR_UEXECUTE;
+
+ if ((status = apr_file_perms_set(resource->info->pathname, perms))
+ != APR_SUCCESS) {
+ return dav_new_error(resource->info->pool,
+ HTTP_INTERNAL_SERVER_ERROR, 0, status,
+ "Could not set the executable flag of the "
+ "target resource.");
+ }
+
+ /* update the resource and set up the rollback context */
+ resource->info->finfo.protection = perms;
+ *rollback_ctx = (dav_liveprop_rollback *)old_value;
+
+ return NULL;
+}
+
+static void dav_fs_patch_commit(const dav_resource *resource,
+ int operation,
+ void *context,
+ dav_liveprop_rollback *rollback_ctx)
+{
+ /* nothing to do */
+}
+
+static dav_error *dav_fs_patch_rollback(const dav_resource *resource,
+ int operation,
+ void *context,
+ dav_liveprop_rollback *rollback_ctx)
+{
+ apr_fileperms_t perms = resource->info->finfo.protection & ~APR_UEXECUTE;
+ apr_status_t status;
+ int value = rollback_ctx != NULL;
+
+ /* assert: prop == executable. operation == SET. */
+
+ /* restore the executable bit */
+ if (value)
+ perms |= APR_UEXECUTE;
+
+ if ((status = apr_file_perms_set(resource->info->pathname, perms))
+ != APR_SUCCESS) {
+ return dav_new_error(resource->info->pool,
+ HTTP_INTERNAL_SERVER_ERROR, 0, status,
+ "After a failure occurred, the resource's "
+ "executable flag could not be restored.");
+ }
+
+ /* restore the resource's state */
+ resource->info->finfo.protection = perms;
+
+ return NULL;
+}
+
+
+static const dav_hooks_liveprop dav_hooks_liveprop_fs =
+{
+ dav_fs_insert_prop,
+ dav_fs_is_writable,
+ dav_fs_namespace_uris,
+ dav_fs_patch_validate,
+ dav_fs_patch_exec,
+ dav_fs_patch_commit,
+ dav_fs_patch_rollback
+};
+
+static const dav_provider dav_fs_provider =
+{
+ &dav_hooks_repository_fs,
+ &dav_hooks_db_dbm,
+ &dav_hooks_locks_fs,
+ NULL, /* vsn */
+ NULL, /* binding */
+ NULL, /* search */
+
+ NULL /* ctx */
+};
+
+void dav_fs_gather_propsets(apr_array_header_t *uris)
+{
+#ifdef DAV_FS_HAS_EXECUTABLE
+ *(const char **)apr_array_push(uris) =
+ "<http://apache.org/dav/propset/fs/1>";
+#endif
+}
+
+int dav_fs_find_liveprop(const dav_resource *resource,
+ const char *ns_uri, const char *name,
+ const dav_hooks_liveprop **hooks)
+{
+ /* don't try to find any liveprops if this isn't "our" resource */
+ if (resource->hooks != &dav_hooks_repository_fs)
+ return 0;
+ return dav_do_find_liveprop(ns_uri, name, &dav_fs_liveprop_group, hooks);
+}
+
+void dav_fs_insert_all_liveprops(request_rec *r, const dav_resource *resource,
+ dav_prop_insert what, apr_text_header *phdr)
+{
+ /* don't insert any liveprops if this isn't "our" resource */
+ if (resource->hooks != &dav_hooks_repository_fs)
+ return;
+
+ if (!resource->exists) {
+ /* a lock-null resource */
+ /*
+ ** ### technically, we should insert empty properties. dunno offhand
+ ** ### what part of the spec said this, but it was essentially thus:
+ ** ### "the properties should be defined, but may have no value".
+ */
+ return;
+ }
+
+ (void) dav_fs_insert_prop(resource, DAV_PROPID_creationdate,
+ what, phdr);
+ (void) dav_fs_insert_prop(resource, DAV_PROPID_getcontentlength,
+ what, phdr);
+ (void) dav_fs_insert_prop(resource, DAV_PROPID_getlastmodified,
+ what, phdr);
+ (void) dav_fs_insert_prop(resource, DAV_PROPID_getetag,
+ what, phdr);
+
+#ifdef DAV_FS_HAS_EXECUTABLE
+ /* Only insert this property if it is defined for this platform. */
+ (void) dav_fs_insert_prop(resource, DAV_PROPID_FS_executable,
+ what, phdr);
+#endif
+
+ /* ### we know the others aren't defined as liveprops */
+}
+
+void dav_fs_register(apr_pool_t *p)
+{
+ /* register the namespace URIs */
+ dav_register_liveprop_group(p, &dav_fs_liveprop_group);
+
+ /* register the repository provider */
+ dav_register_provider(p, "filesystem", &dav_fs_provider);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 05:10:31 +0000