/*
* getlocations.c : entry point for get_locations RA functions for ra_serf
*
* ====================================================================
* 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_uri.h>
#include <serf.h>
#include "svn_path.h"
#include "svn_pools.h"
#include "svn_ra.h"
#include "svn_xml.h"
#include "svn_private_config.h"
#include "../libsvn_ra/ra_loader.h"
#include "ra_serf.h"
/*
* This enum represents the current state of our XML parsing for a REPORT.
*/
typedef enum loc_state_e {
REPORT,
LOCATION
} loc_state_e;
typedef struct loc_state_list_t {
/* The current state that we are in now. */
loc_state_e state;
/* The previous state we were in. */
struct loc_state_list_t *prev;
} loc_state_list_t;
typedef struct loc_context_t {
/* pool to allocate memory from */
apr_pool_t *pool;
/* parameters set by our caller */
const char *path;
const apr_array_header_t *location_revisions;
svn_revnum_t peg_revision;
/* Returned location hash */
apr_hash_t *paths;
/* Current state we're in */
loc_state_list_t *state;
loc_state_list_t *free_state;
int status_code;
svn_boolean_t done;
} loc_context_t;
static void
push_state(loc_context_t *loc_ctx, loc_state_e state)
{
loc_state_list_t *new_state;
if (!loc_ctx->free_state)
{
new_state = apr_palloc(loc_ctx->pool, sizeof(*loc_ctx->state));
}
else
{
new_state = loc_ctx->free_state;
loc_ctx->free_state = loc_ctx->free_state->prev;
}
new_state->state = state;
/* Add it to the state chain. */
new_state->prev = loc_ctx->state;
loc_ctx->state = new_state;
}
static void pop_state(loc_context_t *loc_ctx)
{
loc_state_list_t *free_state;
free_state = loc_ctx->state;
/* advance the current state */
loc_ctx->state = loc_ctx->state->prev;
free_state->prev = loc_ctx->free_state;
loc_ctx->free_state = free_state;
}
static svn_error_t *
start_getloc(svn_ra_serf__xml_parser_t *parser,
void *userData,
svn_ra_serf__dav_props_t name,
const char **attrs)
{
loc_context_t *loc_ctx = userData;
if (!loc_ctx->state && strcmp(name.name, "get-locations-report") == 0)
{
push_state(loc_ctx, REPORT);
}
else if (loc_ctx->state &&
loc_ctx->state->state == REPORT &&
strcmp(name.name, "location") == 0)
{
svn_revnum_t rev = SVN_INVALID_REVNUM;
const char *revstr, *path;
revstr = svn_xml_get_attr_value("rev", attrs);
if (revstr)
{
rev = SVN_STR_TO_REV(revstr);
}
path = svn_xml_get_attr_value("path", attrs);
if (SVN_IS_VALID_REVNUM(rev) && path)
{
apr_hash_set(loc_ctx->paths,
apr_pmemdup(loc_ctx->pool, &rev, sizeof(rev)),
sizeof(rev),
apr_pstrdup(loc_ctx->pool, path));
}
}
return SVN_NO_ERROR;
}
static svn_error_t *
end_getloc(svn_ra_serf__xml_parser_t *parser,
void *userData,
svn_ra_serf__dav_props_t name)
{
loc_context_t *loc_ctx = userData;
loc_state_list_t *cur_state;
if (!loc_ctx->state)
{
return SVN_NO_ERROR;
}
cur_state = loc_ctx->state;
if (cur_state->state == REPORT &&
strcmp(name.name, "get-locations-report") == 0)
{
pop_state(loc_ctx);
}
else if (cur_state->state == LOCATION &&
strcmp(name.name, "location") == 0)
{
pop_state(loc_ctx);
}
return SVN_NO_ERROR;
}
/* Implements svn_ra_serf__request_body_delegate_t */
static svn_error_t *
create_get_locations_body(serf_bucket_t **body_bkt,
void *baton,
serf_bucket_alloc_t *alloc,
apr_pool_t *pool)
{
serf_bucket_t *buckets;
loc_context_t *loc_ctx = baton;
int i;
buckets = serf_bucket_aggregate_create(alloc);
svn_ra_serf__add_open_tag_buckets(buckets, alloc,
"S:get-locations",
"xmlns:S", SVN_XML_NAMESPACE,
"xmlns:D", "DAV:",
NULL);
svn_ra_serf__add_tag_buckets(buckets,
"S:path", loc_ctx->path,
alloc);
svn_ra_serf__add_tag_buckets(buckets,
"S:peg-revision", apr_ltoa(pool, loc_ctx->peg_revision),
alloc);
for (i = 0; i < loc_ctx->location_revisions->nelts; i++)
{
svn_revnum_t rev = APR_ARRAY_IDX(loc_ctx->location_revisions, i, svn_revnum_t);
svn_ra_serf__add_tag_buckets(buckets,
"S:location-revision", apr_ltoa(pool, rev),
alloc);
}
svn_ra_serf__add_close_tag_buckets(buckets, alloc,
"S:get-locations");
*body_bkt = buckets;
return SVN_NO_ERROR;
}
svn_error_t *
svn_ra_serf__get_locations(svn_ra_session_t *ra_session,
apr_hash_t **locations,
const char *path,
svn_revnum_t peg_revision,
const apr_array_header_t *location_revisions,
apr_pool_t *pool)
{
loc_context_t *loc_ctx;
svn_ra_serf__session_t *session = ra_session->priv;
svn_ra_serf__handler_t *handler;
svn_ra_serf__xml_parser_t *parser_ctx;
const char *relative_url, *basecoll_url, *req_url;
svn_error_t *err;
loc_ctx = apr_pcalloc(pool, sizeof(*loc_ctx));
loc_ctx->pool = pool;
loc_ctx->path = path;
loc_ctx->peg_revision = peg_revision;
loc_ctx->location_revisions = location_revisions;
loc_ctx->done = FALSE;
loc_ctx->paths = apr_hash_make(loc_ctx->pool);
*locations = loc_ctx->paths;
SVN_ERR(svn_ra_serf__get_baseline_info(&basecoll_url, &relative_url, session,
NULL, NULL, peg_revision, NULL,
pool));
req_url = svn_path_url_add_component2(basecoll_url, relative_url, pool);
handler = apr_pcalloc(pool, sizeof(*handler));
handler->method = "REPORT";
handler->path = req_url;
handler->body_delegate = create_get_locations_body;
handler->body_delegate_baton = loc_ctx;
handler->body_type = "text/xml";
handler->conn = session->conns[0];
handler->session = session;
parser_ctx = apr_pcalloc(pool, sizeof(*parser_ctx));
parser_ctx->pool = pool;
parser_ctx->user_data = loc_ctx;
parser_ctx->start = start_getloc;
parser_ctx->end = end_getloc;
parser_ctx->status_code = &loc_ctx->status_code;
parser_ctx->done = &loc_ctx->done;
handler->response_handler = svn_ra_serf__handle_xml_parser;
handler->response_baton = parser_ctx;
svn_ra_serf__request_create(handler);
err = svn_ra_serf__context_run_wait(&loc_ctx->done, session, pool);
SVN_ERR(svn_error_compose_create(
svn_ra_serf__error_on_status(loc_ctx->status_code,
req_url,
parser_ctx->location),
err));
return SVN_NO_ERROR;
}