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/*
* config_auth.c : authentication files in the user config area
*
* ====================================================================
* 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 "svn_dirent_uri.h"
#include "svn_hash.h"
#include "svn_io.h"
#include "config_impl.h"
#include "svn_private_config.h"
/* Helper for svn_config_{read|write}_auth_data. Return a path to a
file within ~/.subversion/auth/ that holds CRED_KIND credentials
within REALMSTRING. If no path is available *PATH will be set to
NULL. */
static svn_error_t *
auth_file_path(const char **path,
const char *cred_kind,
const char *realmstring,
const char *config_dir,
apr_pool_t *pool)
{
const char *authdir_path, *hexname;
svn_checksum_t *checksum;
/* Construct the path to the directory containing the creds files,
e.g. "~/.subversion/auth/svn.simple". The last component is
simply the cred_kind. */
SVN_ERR(svn_config_get_user_config_path(&authdir_path, config_dir,
SVN_CONFIG__AUTH_SUBDIR, pool));
if (authdir_path)
{
authdir_path = svn_dirent_join(authdir_path, cred_kind, pool);
/* Construct the basename of the creds file. It's just the
realmstring converted into an md5 hex string. */
SVN_ERR(svn_checksum(&checksum, svn_checksum_md5, realmstring,
strlen(realmstring), pool));
hexname = svn_checksum_to_cstring(checksum, pool);
*path = svn_dirent_join(authdir_path, hexname, pool);
}
else
*path = NULL;
return SVN_NO_ERROR;
}
svn_error_t *
svn_config_read_auth_data(apr_hash_t **hash,
const char *cred_kind,
const char *realmstring,
const char *config_dir,
apr_pool_t *pool)
{
svn_node_kind_t kind;
const char *auth_path;
*hash = NULL;
SVN_ERR(auth_file_path(&auth_path, cred_kind, realmstring, config_dir,
pool));
if (! auth_path)
return SVN_NO_ERROR;
SVN_ERR(svn_io_check_path(auth_path, &kind, pool));
if (kind == svn_node_file)
{
svn_stream_t *stream;
SVN_ERR_W(svn_stream_open_readonly(&stream, auth_path, pool, pool),
_("Unable to open auth file for reading"));
*hash = apr_hash_make(pool);
SVN_ERR_W(svn_hash_read2(*hash, stream, SVN_HASH_TERMINATOR, pool),
apr_psprintf(pool, _("Error parsing '%s'"),
svn_dirent_local_style(auth_path, pool)));
SVN_ERR(svn_stream_close(stream));
}
return SVN_NO_ERROR;
}
svn_error_t *
svn_config_write_auth_data(apr_hash_t *hash,
const char *cred_kind,
const char *realmstring,
const char *config_dir,
apr_pool_t *pool)
{
apr_file_t *authfile = NULL;
svn_stream_t *stream;
const char *auth_path;
SVN_ERR(auth_file_path(&auth_path, cred_kind, realmstring, config_dir,
pool));
if (! auth_path)
return svn_error_create(SVN_ERR_NO_AUTH_FILE_PATH, NULL,
_("Unable to locate auth file"));
/* Add the realmstring to the hash, so programs (or users) can
verify exactly which set of credentials this file holds. */
apr_hash_set(hash, SVN_CONFIG_REALMSTRING_KEY, APR_HASH_KEY_STRING,
svn_string_create(realmstring, pool));
SVN_ERR_W(svn_io_file_open(&authfile, auth_path,
(APR_WRITE | APR_CREATE | APR_TRUNCATE
| APR_BUFFERED),
APR_OS_DEFAULT, pool),
_("Unable to open auth file for writing"));
stream = svn_stream_from_aprfile2(authfile, FALSE, pool);
SVN_ERR_W(svn_hash_write2(hash, stream, SVN_HASH_TERMINATOR, pool),
apr_psprintf(pool, _("Error writing hash to '%s'"),
svn_dirent_local_style(auth_path, pool)));
SVN_ERR(svn_stream_close(stream));
/* To be nice, remove the realmstring from the hash again, just in
case the caller wants their hash unchanged. */
apr_hash_set(hash, SVN_CONFIG_REALMSTRING_KEY, APR_HASH_KEY_STRING, NULL);
return SVN_NO_ERROR;
}
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