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src/subversion/subversion/libsvn_ra_local/ra_plugin.c  view on Meta::CPAN

#include "svn_cache_config.h"

#include "svn_private_config.h"
#include "../libsvn_ra/ra_loader.h"
#include "private/svn_mergeinfo_private.h"
#include "private/svn_repos_private.h"
#include "private/svn_fspath.h"
#include "private/svn_atomic.h"
#include "private/svn_subr_private.h"

#define APR_WANT_STRFUNC
#include <apr_want.h>

/*----------------------------------------------------------------*/

/*** Miscellaneous helper functions ***/


/* Pool cleanup handler: ensure that the access descriptor of the
   filesystem (svn_fs_t *) DATA is set to NULL. */
static apr_status_t
cleanup_access(void *data)
{
  svn_error_t *serr;
  svn_fs_t *fs = data;

  serr = svn_fs_set_access(fs, NULL);

  if (serr)
    {
      apr_status_t apr_err = serr->apr_err;
      svn_error_clear(serr);
      return apr_err;
    }

  return APR_SUCCESS;
}


/* Fetch a username for use with SESSION, and store it in SESSION->username.
 *
 * Allocate the username in SESSION->pool.  Use SCRATCH_POOL for temporary
 * allocations. */
static svn_error_t *
get_username(svn_ra_session_t *session,
             apr_pool_t *scratch_pool)
{
  svn_ra_local__session_baton_t *sess = session->priv;

  /* If we've already found the username don't ask for it again. */
  if (! sess->username)
    {
      /* Get a username somehow, so we have some svn:author property to
         attach to a commit. */
      if (sess->callbacks->auth_baton)
        {
          void *creds;
          svn_auth_cred_username_t *username_creds;
          svn_auth_iterstate_t *iterstate;

          SVN_ERR(svn_auth_first_credentials(&creds, &iterstate,
                                             SVN_AUTH_CRED_USERNAME,
                                             sess->uuid, /* realmstring */
                                             sess->callbacks->auth_baton,
                                             scratch_pool));

          /* No point in calling next_creds(), since that assumes that the
             first_creds() somehow failed to authenticate.  But there's no
             challenge going on, so we use whatever creds we get back on
             the first try. */
          username_creds = creds;
          if (username_creds && username_creds->username)
            {
              sess->username = apr_pstrdup(session->pool,
                                           username_creds->username);
              svn_error_clear(svn_auth_save_credentials(iterstate,
                                                        scratch_pool));
            }
          else
            sess->username = "";
        }
      else
        sess->username = "";
    }

  /* If we have a real username, attach it to the filesystem so that it can
     be used to validate locks.  Even if there already is a user context
     associated, it may contain irrelevant lock tokens, so always create a new.
  */
  if (*sess->username)
    {
      svn_fs_access_t *access_ctx;

      SVN_ERR(svn_fs_create_access(&access_ctx, sess->username,
                                   session->pool));
      SVN_ERR(svn_fs_set_access(sess->fs, access_ctx));

      /* Make sure this context is disassociated when the pool gets
         destroyed. */
      apr_pool_cleanup_register(session->pool, sess->fs, cleanup_access,
                                apr_pool_cleanup_null);
    }

  return SVN_NO_ERROR;
}

/* Implements an svn_atomic__init_once callback.  Sets the FSFS memory
   cache size. */
static svn_error_t *
cache_init(void *baton, apr_pool_t *pool)
{
  apr_hash_t *config_hash = baton;
  svn_config_t *config = NULL;
  const char *memory_cache_size_str;

  if (config_hash)
    config = svn_hash_gets(config_hash, SVN_CONFIG_CATEGORY_CONFIG);
  svn_config_get(config, &memory_cache_size_str, SVN_CONFIG_SECTION_MISCELLANY,
                 SVN_CONFIG_OPTION_MEMORY_CACHE_SIZE, NULL);
  if (memory_cache_size_str)
    {
      apr_uint64_t memory_cache_size;
      svn_cache_config_t settings = *svn_cache_config_get();

      SVN_ERR(svn_error_quick_wrap(svn_cstring_atoui64(&memory_cache_size,
                                                       memory_cache_size_str),
                                   _("memory-cache-size invalid")));
      settings.cache_size = 1024 * 1024 * memory_cache_size;
      svn_cache_config_set(&settings);
    }

  return SVN_NO_ERROR;
}

/*----------------------------------------------------------------*/