diff options
Diffstat (limited to 'subversion/libsvn_ra_serf/get_lock.c')
| -rw-r--r-- | subversion/libsvn_ra_serf/get_lock.c | 337 |
1 files changed, 337 insertions, 0 deletions
diff --git a/subversion/libsvn_ra_serf/get_lock.c b/subversion/libsvn_ra_serf/get_lock.c new file mode 100644 index 0000000..24d7100 --- /dev/null +++ b/subversion/libsvn_ra_serf/get_lock.c @@ -0,0 +1,337 @@ +/* + * get_lock.c : obtain single lock information 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_dav.h" +#include "svn_pools.h" +#include "svn_ra.h" + +#include "../libsvn_ra/ra_loader.h" +#include "svn_config.h" +#include "svn_path.h" +#include "svn_time.h" +#include "svn_private_config.h" + +#include "ra_serf.h" + + +/* + * This enum represents the current state of our XML parsing for a REPORT. + */ +enum { + INITIAL = 0, + MULTISTATUS, + RESPONSE, + PROPSTAT, + PROP, + LOCK_DISCOVERY, + ACTIVE_LOCK, + LOCK_TYPE, + LOCK_SCOPE, + DEPTH, + TIMEOUT, + LOCK_TOKEN, + OWNER, + HREF +}; + +typedef struct lock_info_t { + apr_pool_t *pool; + + const char *path; + + svn_lock_t *lock; + + svn_boolean_t read_headers; + + svn_ra_serf__handler_t *handler; + + /* The expat handler. We wrap this to do a bit more work. */ + svn_ra_serf__response_handler_t inner_handler; + void *inner_baton; + +} lock_info_t; + +#define D_ "DAV:" +#define S_ SVN_XML_NAMESPACE +static const svn_ra_serf__xml_transition_t locks_ttable[] = { + /* The INITIAL state can transition into D:prop (LOCK) or + to D:multistatus (PROPFIND) */ + { INITIAL, D_, "multistatus", MULTISTATUS, + FALSE, { NULL }, FALSE }, + + { MULTISTATUS, D_, "response", RESPONSE, + FALSE, { NULL }, FALSE }, + + { RESPONSE, D_, "propstat", PROPSTAT, + FALSE, { NULL }, FALSE }, + + { PROPSTAT, D_, "prop", PROP, + FALSE, { NULL }, FALSE }, + + { PROP, D_, "lockdiscovery", LOCK_DISCOVERY, + FALSE, { NULL }, FALSE }, + + { LOCK_DISCOVERY, D_, "activelock", ACTIVE_LOCK, + FALSE, { NULL }, FALSE }, + +#if 0 + /* ### we don't really need to parse locktype/lockscope. we know what + ### the values are going to be. we *could* validate that the only + ### possible children are D:write and D:exclusive. we'd need to + ### modify the state transition to tell us about all children + ### (ie. maybe support "*" for the name) and then validate. but it + ### just isn't important to validate, so disable this for now... */ + + { ACTIVE_LOCK, D_, "locktype", LOCK_TYPE, + FALSE, { NULL }, FALSE }, + + { LOCK_TYPE, D_, "write", WRITE, + FALSE, { NULL }, TRUE }, + + { ACTIVE_LOCK, D_, "lockscope", LOCK_SCOPE, + FALSE, { NULL }, FALSE }, + + { LOCK_SCOPE, D_, "exclusive", EXCLUSIVE, + FALSE, { NULL }, TRUE }, +#endif /* 0 */ + + { ACTIVE_LOCK, D_, "timeout", TIMEOUT, + TRUE, { NULL }, TRUE }, + + { ACTIVE_LOCK, D_, "locktoken", LOCK_TOKEN, + FALSE, { NULL }, FALSE }, + + { LOCK_TOKEN, D_, "href", HREF, + TRUE, { NULL }, TRUE }, + + { ACTIVE_LOCK, D_, "owner", OWNER, + TRUE, { NULL }, TRUE }, + + /* ACTIVE_LOCK has a D:depth child, but we can ignore that. */ + + { 0 } +}; + +static const int locks_expected_status[] = { + 207, + 0 +}; + +/* Conforms to svn_ra_serf__xml_closed_t */ +static svn_error_t * +locks_closed(svn_ra_serf__xml_estate_t *xes, + void *baton, + int leaving_state, + const svn_string_t *cdata, + apr_hash_t *attrs, + apr_pool_t *scratch_pool) +{ + lock_info_t *lock_ctx = baton; + + if (leaving_state == TIMEOUT) + { + if (strcasecmp(cdata->data, "Infinite") == 0) + lock_ctx->lock->expiration_date = 0; + else if (strncasecmp(cdata->data, "Second-", 7) == 0) + { + unsigned n; + SVN_ERR(svn_cstring_atoui(&n, cdata->data+7)); + + lock_ctx->lock->expiration_date = apr_time_now() + + apr_time_from_sec(n); + } + else + return svn_error_createf(SVN_ERR_RA_DAV_MALFORMED_DATA, NULL, + _("Invalid LOCK timeout value '%s'"), + cdata->data); + } + else if (leaving_state == HREF) + { + if (cdata->len) + { + char *buf = apr_pstrmemdup(lock_ctx->pool, cdata->data, cdata->len); + + apr_collapse_spaces(buf, buf); + lock_ctx->lock->token = buf; + } + } + else if (leaving_state == OWNER) + { + if (cdata->len) + { + lock_ctx->lock->comment = apr_pstrmemdup(lock_ctx->pool, + cdata->data, cdata->len); + } + } + + return SVN_NO_ERROR; +} + +/* Implements svn_ra_serf__response_handler_t */ +static svn_error_t * +handle_lock(serf_request_t *request, + serf_bucket_t *response, + void *handler_baton, + apr_pool_t *pool) +{ + lock_info_t *ctx = handler_baton; + + if (!ctx->read_headers) + { + serf_bucket_t *headers; + const char *val; + + headers = serf_bucket_response_get_headers(response); + + val = serf_bucket_headers_get(headers, SVN_DAV_LOCK_OWNER_HEADER); + if (val) + { + ctx->lock->owner = apr_pstrdup(ctx->pool, val); + } + + val = serf_bucket_headers_get(headers, SVN_DAV_CREATIONDATE_HEADER); + if (val) + { + SVN_ERR(svn_time_from_cstring(&ctx->lock->creation_date, val, + ctx->pool)); + } + + ctx->read_headers = TRUE; + } + + return ctx->inner_handler(request, response, ctx->inner_baton, pool); +} + +/* Implements svn_ra_serf__request_body_delegate_t */ +static svn_error_t * +create_getlock_body(serf_bucket_t **body_bkt, + void *baton, + serf_bucket_alloc_t *alloc, + apr_pool_t *pool /* request pool */, + apr_pool_t *scratch_pool) +{ + serf_bucket_t *buckets; + + buckets = serf_bucket_aggregate_create(alloc); + + svn_ra_serf__add_xml_header_buckets(buckets, alloc); + svn_ra_serf__add_open_tag_buckets(buckets, alloc, "propfind", + "xmlns", "DAV:", + SVN_VA_NULL); + svn_ra_serf__add_open_tag_buckets(buckets, alloc, "prop", SVN_VA_NULL); + svn_ra_serf__add_empty_tag_buckets(buckets, alloc, + "lockdiscovery", SVN_VA_NULL); + svn_ra_serf__add_close_tag_buckets(buckets, alloc, "prop"); + svn_ra_serf__add_close_tag_buckets(buckets, alloc, "propfind"); + + *body_bkt = buckets; + return SVN_NO_ERROR; +} + +static svn_error_t* +setup_getlock_headers(serf_bucket_t *headers, + void *baton, + apr_pool_t *pool /* request pool */, + apr_pool_t *scratch_pool) +{ + serf_bucket_headers_setn(headers, "Depth", "0"); + + return SVN_NO_ERROR; +} + +svn_error_t * +svn_ra_serf__get_lock(svn_ra_session_t *ra_session, + svn_lock_t **lock, + const char *path, + apr_pool_t *result_pool) +{ + svn_ra_serf__session_t *session = ra_session->priv; + svn_ra_serf__handler_t *handler; + svn_ra_serf__xml_context_t *xmlctx; + apr_pool_t *scratch_pool = svn_pool_create(result_pool); + lock_info_t *lock_ctx; + const char *req_url; + svn_error_t *err; + + req_url = svn_path_url_add_component2(session->session_url.path, path, + scratch_pool); + + lock_ctx = apr_pcalloc(scratch_pool, sizeof(*lock_ctx)); + lock_ctx->pool = result_pool; + lock_ctx->path = req_url; + lock_ctx->lock = svn_lock_create(result_pool); + lock_ctx->lock->path = apr_pstrdup(result_pool, path); + + xmlctx = svn_ra_serf__xml_context_create(locks_ttable, + NULL, locks_closed, NULL, + lock_ctx, + scratch_pool); + handler = svn_ra_serf__create_expat_handler(session, xmlctx, + locks_expected_status, + scratch_pool); + + handler->method = "PROPFIND"; + handler->path = req_url; + handler->body_type = "text/xml"; + + handler->body_delegate = create_getlock_body; + handler->body_delegate_baton = lock_ctx; + + handler->header_delegate = setup_getlock_headers; + handler->header_delegate_baton = lock_ctx; + + handler->no_dav_headers = TRUE; + + lock_ctx->inner_handler = handler->response_handler; + lock_ctx->inner_baton = handler->response_baton; + handler->response_handler = handle_lock; + handler->response_baton = lock_ctx; + + lock_ctx->handler = handler; + + err = svn_ra_serf__context_run_one(handler, scratch_pool); + + if ((err && (handler->sline.code == 500 || handler->sline.code == 501)) + || svn_error_find_cause(err, SVN_ERR_UNSUPPORTED_FEATURE)) + return svn_error_trace( + svn_error_create(SVN_ERR_RA_NOT_IMPLEMENTED, err, + _("Server does not support locking features"))); + else if (svn_error_find_cause(err, SVN_ERR_FS_NOT_FOUND)) + svn_error_clear(err); /* Behave like the other RA layers */ + else if (handler->sline.code != 207) + return svn_error_trace(svn_ra_serf__unexpected_status(handler)); + + if (lock_ctx->lock && lock_ctx->lock->token) + *lock = lock_ctx->lock; + else + *lock = NULL; + + svn_pool_destroy(scratch_pool); + + return SVN_NO_ERROR; +} |