/*
* info.c: return system-generated metadata about paths or URLs.
*
* ====================================================================
* 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 "client.h"
#include "svn_client.h"
#include "svn_pools.h"
#include "svn_dirent_uri.h"
#include "svn_path.h"
#include "svn_hash.h"
#include "svn_wc.h"
#include "svn_private_config.h"
#include "private/svn_fspath.h"
#include "private/svn_wc_private.h"
svn_client_info2_t *
svn_client_info2_dup(const svn_client_info2_t *info,
apr_pool_t *pool)
{
svn_client_info2_t *new_info = apr_pmemdup(pool, info, sizeof(*new_info));
if (new_info->URL)
new_info->URL = apr_pstrdup(pool, info->URL);
if (new_info->repos_root_URL)
new_info->repos_root_URL = apr_pstrdup(pool, info->repos_root_URL);
if (new_info->repos_UUID)
new_info->repos_UUID = apr_pstrdup(pool, info->repos_UUID);
if (info->last_changed_author)
new_info->last_changed_author = apr_pstrdup(pool, info->last_changed_author);
if (new_info->lock)
new_info->lock = svn_lock_dup(info->lock, pool);
if (new_info->wc_info)
new_info->wc_info = svn_wc_info_dup(info->wc_info, pool);
return new_info;
}
/* Set *INFO to a new info struct built from DIRENT
and (possibly NULL) svn_lock_t LOCK, all allocated in POOL.
Pointer fields are copied by reference, not dup'd. */
static svn_error_t *
build_info_from_dirent(svn_client_info2_t **info,
const svn_dirent_t *dirent,
svn_lock_t *lock,
const char *URL,
svn_revnum_t revision,
const char *repos_UUID,
const char *repos_root,
apr_pool_t *pool)
{
svn_client_info2_t *tmpinfo = apr_pcalloc(pool, sizeof(*tmpinfo));
tmpinfo->URL = URL;
tmpinfo->rev = revision;
tmpinfo->kind = dirent->kind;
tmpinfo->repos_UUID = repos_UUID;
tmpinfo->repos_root_URL = repos_root;
tmpinfo->last_changed_rev = dirent->created_rev;
tmpinfo->last_changed_date = dirent->time;
tmpinfo->last_changed_author = dirent->last_author;
tmpinfo->lock = lock;
tmpinfo->size = dirent->size;
tmpinfo->wc_info = NULL;
*info = tmpinfo;
return SVN_NO_ERROR;
}
/* The dirent fields we care about for our calls to svn_ra_get_dir2. */
#define DIRENT_FIELDS (SVN_DIRENT_KIND | \
SVN_DIRENT_CREATED_REV | \
SVN_DIRENT_TIME | \
SVN_DIRENT_LAST_AUTHOR)
/* Helper func for recursively fetching svn_dirent_t's from a remote
directory and pushing them at an info-receiver callback.
DEPTH is the depth starting at DIR, even though RECEIVER is never
invoked on DIR: if DEPTH is svn_depth_immediates, then invoke
RECEIVER on all children of DIR, but none of their children; if
svn_depth_files, then invoke RECEIVER on file children of DIR but
not on subdirectories; if svn_depth_infinity, recurse fully.
DIR is a relpath, relative to the root of RA_SESSION.
*/
static svn_error_t *
push_dir_info(svn_ra_session_t *ra_session,
const char *session_URL,
const char *dir,
svn_revnum_t rev,
const char *repos_UUID,
const char *repos_root,
svn_client_info_receiver2_t receiver,
void *receiver_baton,
svn_depth_t depth,
svn_client_ctx_t *ctx,
apr_hash_t *locks,
apr_pool_t *pool)
{
apr_hash_t *tmpdirents;
apr_hash_index_t *hi;
apr_pool_t *subpool = svn_pool_create(pool);
SVN_ERR(svn_ra_get_dir2(ra_session, &tmpdirents, NULL, NULL,
dir, rev, DIRENT_FIELDS, pool));
for (hi = apr_hash_first(pool, tmpdirents); hi; hi = apr_hash_next(hi))
{
const char *path, *URL, *fs_path;
svn_lock_t *lock;
svn_client_info2_t *info;
const char *name = svn__apr_hash_index_key(hi);
svn_dirent_t *the_ent = svn__apr_hash_index_val(hi);
svn_pool_clear(subpool);
if (ctx->cancel_func)
SVN_ERR(ctx->cancel_func(ctx->cancel_baton));
path = svn_relpath_join(dir, name, subpool);
URL = svn_path_url_add_component2(session_URL, name, subpool);
fs_path = svn_fspath__canonicalize(svn_uri__is_child(repos_root, URL,
subpool), subpool);
lock = apr_hash_get(locks, fs_path, APR_HASH_KEY_STRING);
SVN_ERR(build_info_from_dirent(&info, the_ent, lock, URL, rev,
repos_UUID, repos_root, subpool));
if (depth >= svn_depth_immediates
|| (depth == svn_depth_files && the_ent->kind == svn_node_file))
{
SVN_ERR(receiver(receiver_baton, path, info, subpool));
}
if (depth == svn_depth_infinity && the_ent->kind == svn_node_dir)
{
SVN_ERR(push_dir_info(ra_session, URL, path,
rev, repos_UUID, repos_root,
receiver, receiver_baton,
depth, ctx, locks, subpool));
}
}
svn_pool_destroy(subpool);
return SVN_NO_ERROR;
}
/* Set *SAME_P to TRUE if URL exists in the head of the repository and
refers to the same resource as it does in REV, using POOL for
temporary allocations. RA_SESSION is an open RA session for URL. */
static svn_error_t *
same_resource_in_head(svn_boolean_t *same_p,
const char *url,
svn_revnum_t rev,
svn_ra_session_t *ra_session,
svn_client_ctx_t *ctx,
apr_pool_t *pool)
{
svn_error_t *err;
svn_opt_revision_t start_rev, end_rev, peg_rev;
svn_opt_revision_t *ignored_rev;
const char *head_url, *ignored_url;
start_rev.kind = svn_opt_revision_head;
peg_rev.kind = svn_opt_revision_number;
peg_rev.value.number = rev;
end_rev.kind = svn_opt_revision_unspecified;
err = svn_client__repos_locations(&head_url, &ignored_rev,
&ignored_url, &ignored_rev,
ra_session,
url, &peg_rev,
&start_rev, &end_rev,
ctx, pool);
if (err &&
((err->apr_err == SVN_ERR_CLIENT_UNRELATED_RESOURCES) ||
(err->apr_err == SVN_ERR_FS_NOT_FOUND)))
{
svn_error_clear(err);
*same_p = FALSE;
return SVN_NO_ERROR;
}
else
SVN_ERR(err);
/* ### Currently, the URLs should always be equal, since we can't
### walk forwards in history. */
*same_p = (strcmp(url, head_url) == 0);
return SVN_NO_ERROR;
}
/* A baton for wc_info_receiver(), containing the wrapped receiver. */
typedef struct wc_info_receiver_baton_t
{
svn_client_info_receiver2_t client_receiver_func;
void *client_receiver_baton;
} wc_info_receiver_baton_t;
/* A receiver for WC info, implementing svn_client_info_receiver2_t.
* Convert the WC info to client info and pass it to the client info
* receiver (BATON->client_receiver_func with BATON->client_receiver_baton). */
static svn_error_t *
wc_info_receiver(void *baton,
const char *abspath_or_url,
const svn_wc__info2_t *wc_info,
apr_pool_t *scratch_pool)
{
wc_info_receiver_baton_t *b = baton;
svn_client_info2_t client_info;
/* Make a shallow copy in CLIENT_INFO of the contents of WC_INFO. */
client_info.repos_root_URL = wc_info->repos_root_URL;
client_info.repos_UUID = wc_info->repos_UUID;
client_info.rev = wc_info->rev;
client_info.URL = wc_info->URL;
client_info.kind = wc_info->kind;
client_info.size = wc_info->size;
client_info.last_changed_rev = wc_info->last_changed_rev;
client_info.last_changed_date = wc_info->last_changed_date;
client_info.last_changed_author = wc_info->last_changed_author;
client_info.lock = wc_info->lock;
client_info.wc_info = wc_info->wc_info;
return b->client_receiver_func(b->client_receiver_baton,
abspath_or_url, &client_info, scratch_pool);
}
svn_error_t *
svn_client_info3(const char *abspath_or_url,
const svn_opt_revision_t *peg_revision,
const svn_opt_revision_t *revision,
svn_depth_t depth,
svn_boolean_t fetch_excluded,
svn_boolean_t fetch_actual_only,
const apr_array_header_t *changelists,
svn_client_info_receiver2_t receiver,
void *receiver_baton,
svn_client_ctx_t *ctx,
apr_pool_t *pool)
{
svn_ra_session_t *ra_session, *parent_ra_session;
svn_revnum_t rev;
const char *url;
svn_node_kind_t url_kind;
const char *repos_root_URL, *repos_UUID;
svn_lock_t *lock;
svn_boolean_t related;
apr_hash_t *parent_ents;
const char *parent_url, *base_name;
svn_dirent_t *the_ent;
svn_client_info2_t *info;
svn_error_t *err;
if (depth == svn_depth_unknown)
depth = svn_depth_empty;
if ((revision == NULL
|| revision->kind == svn_opt_revision_unspecified)
&& (peg_revision == NULL
|| peg_revision->kind == svn_opt_revision_unspecified))
{
/* Do all digging in the working copy. */
wc_info_receiver_baton_t b;
b.client_receiver_func = receiver;
b.client_receiver_baton = receiver_baton;
return svn_error_trace(
svn_wc__get_info(ctx->wc_ctx, abspath_or_url, depth,
fetch_excluded, fetch_actual_only, changelists,
wc_info_receiver, &b,
ctx->cancel_func, ctx->cancel_baton, pool));
}
/* Go repository digging instead. */
/* Trace rename history (starting at path_or_url@peg_revision) and
return RA session to the possibly-renamed URL as it exists in REVISION.
The ra_session returned will be anchored on this "final" URL. */
SVN_ERR(svn_client__ra_session_from_path(&ra_session, &rev,
&url, abspath_or_url, NULL,
peg_revision,
revision, ctx, pool));
SVN_ERR(svn_ra_get_repos_root2(ra_session, &repos_root_URL, pool));
SVN_ERR(svn_ra_get_uuid2(ra_session, &repos_UUID, pool));
svn_uri_split(&parent_url, &base_name, url, pool);
/* Get the dirent for the URL itself. */
err = svn_ra_stat(ra_session, "", rev, &the_ent, pool);
/* svn_ra_stat() will work against old versions of mod_dav_svn, but
not old versions of svnserve. In the case of a pre-1.2 svnserve,
catch the specific error it throws:*/
if (err && err->apr_err == SVN_ERR_RA_NOT_IMPLEMENTED)
{
/* Fall back to pre-1.2 strategy for fetching dirent's URL. */
svn_error_clear(err);
if (strcmp(url, repos_root_URL) == 0)
{
/* In this universe, there's simply no way to fetch
information about the repository's root directory!
If we're recursing, degrade gracefully: rather than
throw an error, return no information about the
repos root. */
if (depth > svn_depth_empty)
goto pre_1_2_recurse;
/* Otherwise, we really are stuck. Better tell the user
what's going on. */
return svn_error_createf(SVN_ERR_UNSUPPORTED_FEATURE, NULL,
_("Server does not support retrieving "
"information about the repository root"));
}
SVN_ERR(svn_ra_check_path(ra_session, "", rev, &url_kind, pool));
if (url_kind == svn_node_none)
return svn_error_createf(SVN_ERR_RA_ILLEGAL_URL, NULL,
_("URL '%s' non-existent in revision %ld"),
url, rev);
/* Open a new RA session to the item's parent. */
SVN_ERR(svn_client__open_ra_session_internal(&parent_ra_session, NULL,
parent_url, NULL,
NULL, FALSE, TRUE,
ctx, pool));
/* Get all parent's entries, and find the item's dirent in the hash. */
SVN_ERR(svn_ra_get_dir2(parent_ra_session, &parent_ents, NULL, NULL,
"", rev, DIRENT_FIELDS, pool));
the_ent = apr_hash_get(parent_ents, base_name, APR_HASH_KEY_STRING);
if (the_ent == NULL)
return svn_error_createf(SVN_ERR_RA_ILLEGAL_URL, NULL,
_("URL '%s' non-existent in revision %ld"),
url, rev);
}
else if (err)
{
return svn_error_trace(err);
}
if (! the_ent)
return svn_error_createf(SVN_ERR_RA_ILLEGAL_URL, NULL,
_("URL '%s' non-existent in revision %ld"),
url, rev);
/* Check if the URL exists in HEAD and refers to the same resource.
In this case, we check the repository for a lock on this URL.
### There is a possible race here, since HEAD might have changed since
### we checked it. A solution to this problem could be to do the below
### check in a loop which only terminates if the HEAD revision is the same
### before and after this check. That could, however, lead to a
### starvation situation instead. */
SVN_ERR(same_resource_in_head(&related, url, rev, ra_session, ctx, pool));
if (related)
{
err = svn_ra_get_lock(ra_session, &lock, "", pool);
/* An old mod_dav_svn will always work; there's nothing wrong with
doing a PROPFIND for a property named "DAV:supportedlock". But
an old svnserve will error. */
if (err && err->apr_err == SVN_ERR_RA_NOT_IMPLEMENTED)
{
svn_error_clear(err);
lock = NULL;
}
else if (err)
return svn_error_trace(err);
}
else
lock = NULL;
/* Push the URL's dirent (and lock) at the callback.*/
SVN_ERR(build_info_from_dirent(&info, the_ent, lock, url, rev,
repos_UUID, repos_root_URL, pool));
SVN_ERR(receiver(receiver_baton, base_name, info, pool));
/* Possibly recurse, using the original RA session. */
if (depth > svn_depth_empty && (the_ent->kind == svn_node_dir))
{
apr_hash_t *locks;
pre_1_2_recurse:
if (peg_revision->kind == svn_opt_revision_head)
{
err = svn_ra_get_locks2(ra_session, &locks, "", depth,
pool);
/* Catch specific errors thrown by old mod_dav_svn or svnserve. */
if (err &&
(err->apr_err == SVN_ERR_RA_NOT_IMPLEMENTED
|| err->apr_err == SVN_ERR_UNSUPPORTED_FEATURE))
{
svn_error_clear(err);
locks = apr_hash_make(pool); /* use an empty hash */
}
else if (err)
return svn_error_trace(err);
}
else
locks = apr_hash_make(pool); /* use an empty hash */
SVN_ERR(push_dir_info(ra_session, url, "", rev,
repos_UUID, repos_root_URL,
receiver, receiver_baton,
depth, ctx, locks, pool));
}
return SVN_NO_ERROR;
}
svn_error_t *
svn_client_get_wc_root(const char **wcroot_abspath,
const char *local_abspath,
svn_client_ctx_t *ctx,
apr_pool_t *result_pool,
apr_pool_t *scratch_pool)
{
return svn_wc__get_wc_root(wcroot_abspath, ctx->wc_ctx, local_abspath,
result_pool, scratch_pool);
}
/* NOTE: This function was requested by the TortoiseSVN project. See
issue #3927. */
svn_error_t *
svn_client_min_max_revisions(svn_revnum_t *min_revision,
svn_revnum_t *max_revision,
const char *local_abspath,
svn_boolean_t committed,
svn_client_ctx_t *ctx,
apr_pool_t *scratch_pool)
{
return svn_wc__min_max_revisions(min_revision, max_revision, ctx->wc_ctx,
local_abspath, committed, scratch_pool);
}