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/*
* get-locations.c: mod_dav_svn REPORT handler for finding repos locations
* (path/revision pairs) in an object's history.
*
* ====================================================================
* 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.
* ====================================================================
*/
#include <apr_tables.h>
#include <apr_uuid.h>
#include <httpd.h>
#include <http_log.h>
#include <mod_dav.h>
#include "svn_fs.h"
#include "svn_xml.h"
#include "svn_repos.h"
#include "svn_dav.h"
#include "svn_time.h"
#include "svn_pools.h"
#include "svn_props.h"
#include "svn_dav.h"
#include "svn_base64.h"
#include "private/svn_fspath.h"
#include "../dav_svn.h"
static svn_error_t *
send_get_locations_report(dav_svn__output *output,
apr_bucket_brigade *bb,
const dav_resource *resource,
apr_hash_t *fs_locations)
{
apr_hash_index_t *hi;
apr_pool_t *pool = resource->pool;
SVN_ERR(dav_svn__brigade_printf(
bb, output,
DAV_XML_HEADER DEBUG_CR
"<S:get-locations-report xmlns:S=\"" SVN_XML_NAMESPACE
"\" xmlns:D=\"DAV:\">" DEBUG_CR));
for (hi = apr_hash_first(pool, fs_locations); hi; hi = apr_hash_next(hi))
{
const void *key;
void *value;
const char *path_quoted;
apr_hash_this(hi, &key, NULL, &value);
path_quoted = apr_xml_quote_string(pool, value, 1);
SVN_ERR(dav_svn__brigade_printf(
bb, output, "<S:location "
"rev=\"%ld\" path=\"%s\"/>" DEBUG_CR,
*(const svn_revnum_t *)key, path_quoted));
}
SVN_ERR(dav_svn__brigade_printf(bb, output,
"</S:get-locations-report>" DEBUG_CR));
return SVN_NO_ERROR;
}
dav_error *
dav_svn__get_locations_report(const dav_resource *resource,
const apr_xml_doc *doc,
dav_svn__output *output)
{
svn_error_t *serr;
dav_error *derr = NULL;
apr_bucket_brigade *bb;
dav_svn__authz_read_baton arb;
/* The parameters to do the operation on. */
const char *abs_path = NULL;
svn_revnum_t peg_revision = SVN_INVALID_REVNUM;
apr_array_header_t *location_revisions;
/* XML Parsing Variables */
int ns;
apr_xml_elem *child;
apr_hash_t *fs_locations;
location_revisions = apr_array_make(resource->pool, 0,
sizeof(svn_revnum_t));
/* Sanity check. */
if (!resource->info->repos_path)
return dav_svn__new_error(resource->pool, HTTP_BAD_REQUEST, 0,
"The request does not specify a repository path");
ns = dav_svn__find_ns(doc->namespaces, SVN_XML_NAMESPACE);
if (ns == -1)
{
return dav_svn__new_error_svn(resource->pool, HTTP_BAD_REQUEST, 0,
"The request does not contain the 'svn:' "
"namespace, so it is not going to have "
"certain required elements");
}
/* Gather the parameters. */
for (child = doc->root->first_child; child != NULL; child = child->next)
{
/* If this element isn't one of ours, then skip it. */
if (child->ns != ns)
continue;
if (strcmp(child->name, "peg-revision") == 0)
peg_revision = SVN_STR_TO_REV(dav_xml_get_cdata(child,
resource->pool, 1));
else if (strcmp(child->name, "location-revision") == 0)
{
svn_revnum_t revision
= SVN_STR_TO_REV(dav_xml_get_cdata(child, resource->pool, 1));
APR_ARRAY_PUSH(location_revisions, svn_revnum_t) = revision;
}
else if (strcmp(child->name, "path") == 0)
{
const char *rel_path = dav_xml_get_cdata(child, resource->pool, 0);
if ((derr = dav_svn__test_canonical(rel_path, resource->pool)))
return derr;
/* Force REL_PATH to be a relative path, not an fspath. */
rel_path = svn_relpath_canonicalize(rel_path, resource->pool);
/* Append the REL_PATH to the base FS path to get an absolute
repository path. */
abs_path = svn_fspath__join(resource->info->repos_path, rel_path,
resource->pool);
}
}
/* Check that all parameters are present and valid. */
if (! (abs_path && SVN_IS_VALID_REVNUM(peg_revision)))
return dav_svn__new_error_svn(resource->pool, HTTP_BAD_REQUEST, 0,
"Not all parameters passed");
/* Build an authz read baton */
arb.r = resource->info->r;
arb.repos = resource->info->repos;
serr = svn_repos_trace_node_locations(resource->info->repos->fs,
&fs_locations, abs_path, peg_revision,
location_revisions,
dav_svn__authz_read_func(&arb), &arb,
resource->pool);
if (serr)
{
return dav_svn__convert_err(serr, HTTP_INTERNAL_SERVER_ERROR, NULL,
resource->pool);
}
bb = apr_brigade_create(resource->pool,
dav_svn__output_get_bucket_alloc(output));
serr = send_get_locations_report(output, bb, resource, fs_locations);
if (serr)
derr = dav_svn__convert_err(serr,
HTTP_INTERNAL_SERVER_ERROR,
"Error writing REPORT response.",
resource->pool);
return dav_svn__final_flush_or_error(resource->info->r, bb, output,
derr, resource->pool);
}
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