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src/subversion/subversion/libsvn_ra_serf/getlocks.c  view on Meta::CPAN

enum {
  INITIAL = 0,
  REPORT,
  LOCK,
  PATH,
  TOKEN,
  OWNER,
  COMMENT,
  CREATION_DATE,
  EXPIRATION_DATE
};

typedef struct lock_context_t {
  apr_pool_t *pool;

  /* target and requested depth of the operation. */
  const char *path;
  svn_depth_t requested_depth;

  /* return hash */
  apr_hash_t *hash;

} lock_context_t;

#define D_ "DAV:"
#define S_ SVN_XML_NAMESPACE
static const svn_ra_serf__xml_transition_t getlocks_ttable[] = {
  { INITIAL, S_, "get-locks-report", REPORT,
    FALSE, { NULL }, FALSE },

  { REPORT, S_, "lock", LOCK,
    FALSE, { NULL }, TRUE },

  { LOCK, S_, "path", PATH,
    TRUE, { NULL }, TRUE },

  { LOCK, S_, "token", TOKEN,
    TRUE, { NULL }, TRUE },

  { LOCK, S_, "owner", OWNER,
    TRUE, { NULL }, TRUE },

  { LOCK, S_, "comment", COMMENT,
    TRUE, { NULL }, TRUE },

  { LOCK, S_, SVN_DAV__CREATIONDATE, CREATION_DATE,
    TRUE, { NULL }, TRUE },

  { LOCK, S_, "expirationdate", EXPIRATION_DATE,
    TRUE, { NULL }, TRUE },

  { 0 }
};


/* Conforms to svn_ra_serf__xml_closed_t  */
static svn_error_t *
getlocks_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_context_t *lock_ctx = baton;

  if (leaving_state == LOCK)
    {
      const char *path = svn_hash_gets(attrs, "path");
      const char *token = svn_hash_gets(attrs, "token");
      svn_boolean_t save_lock = FALSE;

      /* Filter out unwanted paths.  Since Subversion only allows
         locks on files, we can treat depth=immediates the same as
         depth=files for filtering purposes.  Meaning, we'll keep
         this lock if:

         a) its path is the very path we queried, or
         b) we've asked for a fully recursive answer, or
         c) we've asked for depth=files or depth=immediates, and this
            lock is on an immediate child of our query path.
      */
      if (! token)
        {
          /* A lock without a token is not a lock; just an answer that there
             is no lock on the node. */
          save_lock = FALSE;
        }
      if (strcmp(lock_ctx->path, path) == 0
          || lock_ctx->requested_depth == svn_depth_infinity)
        {
          save_lock = TRUE;
        }
      else if (lock_ctx->requested_depth == svn_depth_files
               || lock_ctx->requested_depth == svn_depth_immediates)
        {
          const char *relpath = svn_fspath__skip_ancestor(lock_ctx->path,
                                                          path);
          if (relpath && (svn_path_component_count(relpath) == 1))
            save_lock = TRUE;
        }

      if (save_lock)
        {
          /* We get to put the structure on the stack rather than using
             svn_lock_create(). Bwahahaha....   */
          svn_lock_t lock = { 0 };
          const char *date;
          svn_lock_t *result_lock;

          /* Note: these "attributes" came from child elements. Some of
             them may have not been sent, so the value will be NULL.  */

          lock.path = path;
          lock.token = token;
          lock.owner = svn_hash_gets(attrs, "owner");
          lock.comment = svn_hash_gets(attrs, "comment");

          date = svn_hash_gets(attrs, SVN_DAV__CREATIONDATE);
          if (date)
            SVN_ERR(svn_time_from_cstring(&lock.creation_date, date,
                                          scratch_pool));

          date = svn_hash_gets(attrs, "expirationdate");
          if (date)
            SVN_ERR(svn_time_from_cstring(&lock.expiration_date, date,
                                          scratch_pool));

          result_lock = svn_lock_dup(&lock, lock_ctx->pool);
          svn_hash_sets(lock_ctx->hash, result_lock->path, result_lock);
        }
    }
  else
    {
      const char *name;

      SVN_ERR_ASSERT(cdata != NULL);

      if (leaving_state == PATH)
        name = "path";
      else if (leaving_state == TOKEN)
        name = "token";
      else if (leaving_state == OWNER)
        name = "owner";
      else if (leaving_state == COMMENT)
        name = "comment";
      else if (leaving_state == CREATION_DATE)
        name = SVN_DAV__CREATIONDATE;
      else if (leaving_state == EXPIRATION_DATE)
        name = "expirationdate";
      else
        SVN_ERR_MALFUNCTION();

      /* Store the lock information onto the LOCK elemstate.  */
      svn_ra_serf__xml_note(xes, LOCK, name, cdata->data);
    }

  return SVN_NO_ERROR;
}


/* Implements svn_ra_serf__request_body_delegate_t */
static svn_error_t *
create_getlocks_body(serf_bucket_t **body_bkt,
                     void *baton,
                     serf_bucket_alloc_t *alloc,
                     apr_pool_t *pool)
{
  lock_context_t *lock_ctx = baton;
  serf_bucket_t *buckets;

  buckets = serf_bucket_aggregate_create(alloc);

  svn_ra_serf__add_open_tag_buckets(
    buckets, alloc, "S:get-locks-report", "xmlns:S", SVN_XML_NAMESPACE,
    "depth", svn_depth_to_word(lock_ctx->requested_depth), NULL);
  svn_ra_serf__add_close_tag_buckets(buckets, alloc, "S:get-locks-report");

  *body_bkt = buckets;
  return SVN_NO_ERROR;
}

svn_error_t *
svn_ra_serf__get_locks(svn_ra_session_t *ra_session,
                       apr_hash_t **locks,
                       const char *path,
                       svn_depth_t depth,
                       apr_pool_t *pool)
{
  lock_context_t *lock_ctx;
  svn_ra_serf__session_t *session = ra_session->priv;
  svn_ra_serf__handler_t *handler;
  svn_ra_serf__xml_context_t *xmlctx;
  const char *req_url, *rel_path;
  svn_error_t *err;

  req_url = svn_path_url_add_component2(session->session_url.path, path, pool);
  SVN_ERR(svn_ra_serf__get_relative_path(&rel_path, req_url, session,
                                         NULL, pool));

  lock_ctx = apr_pcalloc(pool, sizeof(*lock_ctx));
  lock_ctx->pool = pool;
  lock_ctx->path = apr_pstrcat(pool, "/", rel_path, (char *)NULL);
  lock_ctx->requested_depth = depth;
  lock_ctx->hash = apr_hash_make(pool);

  xmlctx = svn_ra_serf__xml_context_create(getlocks_ttable,
                                           NULL, getlocks_closed, NULL,
                                           lock_ctx,
                                           pool);
  handler = svn_ra_serf__create_expat_handler(xmlctx, pool);

  handler->method = "REPORT";
  handler->path = req_url;
  handler->body_type = "text/xml";