config_file.c

subversion-1.4.3-1.tar.gz 配置svn的源码

        {
        case '[':               /* Start of section header */
          if (count == 0)
            SVN_ERR(parse_section_name(&ch, &ctx, pool));
          else
            return svn_error_createf(SVN_ERR_MALFORMED_FILE, NULL,
                                     "%s:%d: Section header"
                                     " must start in the first column",
                                     svn_path_local_style(file, pool),
                                     ctx.line);
          break;

        case '#':               /* Comment */
          if (count == 0)
            {
              SVN_ERR(skip_to_eoln(&ctx, &ch));
              ++ctx.line;
            }
          else
            return svn_error_createf(SVN_ERR_MALFORMED_FILE, NULL,
                                     "%s:%d: Comment"
                                     " must start in the first column",
                                     svn_path_local_style(file, pool),
                                     ctx.line);
          break;

        case '\n':              /* Empty line */
          ++ctx.line;
          break;

        case EOF:               /* End of file or read error */
          break;

        default:
          if (svn_stringbuf_isempty(ctx.section))
            return svn_error_createf(SVN_ERR_MALFORMED_FILE, NULL,
                                     "%s:%d: Section header expected",
                                     svn_path_local_style(file, pool),
                                     ctx.line);
          else if (count != 0)
            return svn_error_createf(SVN_ERR_MALFORMED_FILE, NULL,
                                     "%s:%d: Option expected",
                                     svn_path_local_style(file, pool),
                                     ctx.line);
          else
            SVN_ERR(parse_option(&ch, &ctx, pool));
          break;
        }
    }
  while (ch != EOF);

  /* Close the file and streams (and other cleanup): */
  SVN_ERR(svn_stream_close(ctx.stream));
  SVN_ERR(svn_io_file_close(f, pool));

  return SVN_NO_ERROR;
}


/* Helper for svn_config_ensure:  see if ~/.subversion/auth/ and its
   subdirs exist, try to create them, but don't throw errors on
   failure.  PATH is assumed to be a path to the user's private config
   directory. */
static void
ensure_auth_dirs(const char *path,
                 apr_pool_t *pool)
{
  svn_node_kind_t kind;
  const char *auth_dir, *auth_subdir;
  svn_error_t *err;

  /* Ensure ~/.subversion/auth/ */
  auth_dir = svn_path_join_many(pool, path, SVN_CONFIG__AUTH_SUBDIR, NULL);
  err = svn_io_check_path(auth_dir, &kind, pool);
  if (err || kind == svn_node_none)
    {
      svn_error_clear(err);
      /* 'chmod 700' permissions: */
      err = svn_io_dir_make(auth_dir,
                            (APR_UREAD | APR_UWRITE | APR_UEXECUTE),
                            pool);
      if (err)
        {
          /* Don't try making subdirs if we can't make the top-level dir. */
          svn_error_clear(err);
          return;
        }
    }

  /* If a provider exists that wants to store credentials in
     ~/.subversion, a subdirectory for the cred_kind must exist. */

  auth_subdir = svn_path_join_many(pool, auth_dir,
                                   SVN_AUTH_CRED_SIMPLE, NULL);
  err = svn_io_check_path(auth_subdir, &kind, pool);
  if (err || kind == svn_node_none)
    {
      svn_error_clear(err);
      svn_error_clear(svn_io_dir_make(auth_subdir, APR_OS_DEFAULT, pool));
    }
      
  auth_subdir = svn_path_join_many(pool, auth_dir,
                                   SVN_AUTH_CRED_USERNAME, NULL);
  err = svn_io_check_path(auth_subdir, &kind, pool);
  if (err || kind == svn_node_none)
    {
      svn_error_clear(err);
      svn_error_clear(svn_io_dir_make(auth_subdir, APR_OS_DEFAULT, pool));
    }

  auth_subdir = svn_path_join_many(pool, auth_dir,
                                   SVN_AUTH_CRED_SSL_SERVER_TRUST, NULL);
  err = svn_io_check_path(auth_subdir, &kind, pool);
  if (err || kind == svn_node_none)
    {
      svn_error_clear(err);
      svn_error_clear(svn_io_dir_make(auth_subdir, APR_OS_DEFAULT, pool));
    }
}


svn_error_t *
svn_config_ensure(const char *config_dir, apr_pool_t *pool)
{
  const char *path;
  svn_node_kind_t kind;
  svn_error_t *err;

  /* Ensure that the user-specific config directory exists.  */
  SVN_ERR(svn_config__user_config_path(config_dir, &path, NULL, pool));

  if (! path)
    return SVN_NO_ERROR;

  err = svn_io_check_path(path, &kind, pool);
  if (err)
    {
      /* Don't throw an error, but don't continue. */
      svn_error_clear(err);
      return SVN_NO_ERROR;
    }

  if (kind == svn_node_none)
    {
      err = svn_io_dir_make(path, APR_OS_DEFAULT, pool);
      if (err)
        {
          /* Don't throw an error, but don't continue. */
          svn_error_clear(err);
          return SVN_NO_ERROR;
        }
    }
  else
    {
      /* ### config directory already exists, but for the sake of
         smooth upgrades, try to ensure that the auth/ subdirs exist
         as well.  we can remove this check someday in the future. */
      ensure_auth_dirs(path, pool);

      return SVN_NO_ERROR;
    }

  /* Else, there's a configuration directory. */

  /* If we get errors trying to do things below, just stop and return
     success.  There's no _need_ to init a config directory if
     something's preventing it. */

  /** If non-existent, try to create a number of auth/ subdirectories. */
  ensure_auth_dirs(path, pool);

  /** Ensure that the `README.txt' file exists. **/
  SVN_ERR(svn_config__user_config_path
          (config_dir, &path, SVN_CONFIG__USR_README_FILE, pool));

  if (! path)  /* highly unlikely, since a previous call succeeded */
    return SVN_NO_ERROR;

  err = svn_io_check_path(path, &kind, pool);
  if (err)
    {
      svn_error_clear(err);
      return SVN_NO_ERROR;
    }

  if (kind == svn_node_none)
    {
      apr_file_t *f;
      const char *contents =
   "This directory holds run-time configuration information for Subversion"
   APR_EOL_STR
   "clients.  The configuration files all share the same syntax, but you"
   APR_EOL_STR
   "should examine a particular file to learn what configuration"
   APR_EOL_STR
   "directives are valid for that file."
   APR_EOL_STR
   APR_EOL_STR
   "The syntax is standard INI format:"
   APR_EOL_STR
   APR_EOL_STR
   "   - Empty lines, and lines starting with '#', are ignored."
   APR_EOL_STR
   "     The first significant line in a file must be a section header."
   APR_EOL_STR
   APR_EOL_STR
   "   - A section starts with a section header, which must start in"
   APR_EOL_STR
   "     the first column:"
   APR_EOL_STR
   APR_EOL_STR
   "       [section-name]"
   APR_EOL_STR
   APR_EOL_STR
   "   - An option, which must always appear within a section, is a pair"
   APR_EOL_STR
   "     (name, value).  There are two valid forms for defining an"
   APR_EOL_STR
   "     option, both of which must start in the first column:"
   APR_EOL_STR
   APR_EOL_STR
   "       name: value"
   APR_EOL_STR
   "       name = value"
   APR_EOL_STR
   APR_EOL_STR
   "     Whitespace around the separator (:, =) is optional."
   APR_EOL_STR
   APR_EOL_STR
   "   - Section and option names are case-insensitive, but case is"
   APR_EOL_STR
   "     preserved."
   APR_EOL_STR
   APR_EOL_STR
   "   - An option's value may be broken into several lines.  The value"
   APR_EOL_STR
   "     continuation lines must start with at least one whitespace."
   APR_EOL_STR
   "     Trailing whitespace in the previous line, the newline character"
   APR_EOL_STR
   "     and the leading whitespace in the continuation line is compressed"
   APR_EOL_STR
   "     into a single space character."
   APR_EOL_STR
   APR_EOL_STR
   "   - All leading and trailing whitespace around a value is trimmed,"
   APR_EOL_STR
   "     but the whitespace within a value is preserved, with the"
   APR_EOL_STR
   "     exception of whitespace around line continuations, as"
   APR_EOL_STR
   "     described above."
   APR_EOL_STR
   APR_EOL_STR
   "   - When a value is a boolean, any of the following strings are"
   APR_EOL_STR
   "     recognised as truth values (case does not matter):"
   APR_EOL_STR
   APR_EOL_STR
   "       true      false"
   APR_EOL_STR
   "       yes       no"
   APR_EOL_STR
   "       on        off"
   APR_EOL_STR
   "       1         0"
   APR_EOL_STR
   APR_EOL_STR
   "   - When a value is a list, it is comma-separated.  Again, the"
   APR_EOL_STR
   "     whitespace around each element of the list is trimmed."
   APR_EOL_STR
   APR_EOL_STR
   "   - Option values may be expanded within a value by enclosing the"
   APR_EOL_STR
   "     option name in parentheses, preceded by a percent sign and"
   APR_EOL_STR
   "     followed by an 's':"
   APR_EOL_STR
   APR_EOL_STR
   "       %(name)s"
   APR_EOL_STR
   APR_EOL_STR
   "     The expansion is performed recursively and on demand, during"
   APR_EOL_STR
   "     svn_option_get.  The name is first searched for in the same"
   APR_EOL_STR
   "     section, then in the special [DEFAULT] section. If the name"
   APR_EOL_STR
   "     is not found, the whole '%(name)s' placeholder is left"
   APR_EOL_STR
   "     unchanged."
   APR_EOL_STR
   APR_EOL_STR
   "     Any modifications to the configuration data invalidate all"
   APR_EOL_STR
   "     previously expanded values, so that the next svn_option_get"
   APR_EOL_STR
   "     will take the modifications into account."
   APR_EOL_STR
   APR_EOL_STR
   "The syntax of the configuration files is a subset of the one used by"
   APR_EOL_STR
   "Python's ConfigParser module; see"
   APR_EOL_STR
   APR_EOL_STR
   "   http://www.python.org/doc/current/lib/module-ConfigParser.html"
   APR_EOL_STR
   APR_EOL_STR
   "Configuration data in the Windows registry"
   APR_EOL_STR
   "=========================================="
   APR_EOL_STR
   APR_EOL_STR
   "On Windows, configuration data may also be stored in the registry.  The"
   APR_EOL_STR
   "functions svn_config_read and svn_config_merge will read from the"
   APR_EOL_STR
   "registry when passed file names of the form:"
   APR_EOL_STR
   APR_EOL_STR
   "   REGISTRY:<hive>/path/to/config-key"
   APR_EOL_STR
   APR_EOL_STR
   "The REGISTRY: prefix must be in upper case. The <hive> part must be"
   APR_EOL_STR
   "one of:"
   APR_EOL_STR
   APR_EOL_STR
   "   HKLM for HKEY_LOCAL_MACHINE"
   APR_EOL_STR
   "   HKCU for HKEY_CURRENT_USER"
   APR_EOL_STR
   APR_EOL_STR
   "The values in config-key represent the options in the [DEFAULT] section."
   APR_EOL_STR
   "The keys below config-key represent other sections, and their values"
   APR_EOL_STR
   "represent the options. Only values of type REG_SZ whose name doesn't"
   APR_EOL_STR
   "start with a '#' will be used; other values, as well as the keys'"
   APR_EOL_STR
   "default values, will be ignored."
   APR_EOL_STR
   APR_EOL_STR
   APR_EOL_STR
   "File locations"
   APR_EOL_STR
   "=============="
   APR_EOL_STR
   APR_EOL_STR
   "Typically, Subversion uses two config directories, one for site-wide"
   APR_EOL_STR
   "configuration,"
   APR_EOL_STR
   APR_EOL_STR
   "  Unix:"
   APR_EOL_STR
   "    /etc/subversion/servers"
   APR_EOL_STR
   "    /etc/subversion/config"
   APR_EOL_STR
   "    /etc/subversion/hairstyles"
   APR_EOL_STR
   "  Windows:"
   APR_EOL_STR
   "    %ALLUSERSPROFILE%\\Application Data\\Subversion\\servers"
   APR_EOL_STR
   "    %ALLUSERSPROFILE%\\Application Data\\Subversion\\config"
   APR_EOL_STR
   "    %ALLUSERSPROFILE%\\Application Data\\Subversion\\hairstyles"
   APR_EOL_STR
   "    REGISTRY:HKLM\\Software\\Tigris.org\\Subversion\\Servers"
   APR_EOL_STR
   "    REGISTRY:HKLM\\Software\\Tigris.org\\Subversion\\Config"
   APR_EOL_STR
   "    REGISTRY:HKLM\\Software\\Tigris.org\\Subversion\\Hairstyles"
   APR_EOL_STR
   APR_EOL_STR
   "and one for per-user configuration:"
   APR_EOL_STR
   APR_EOL_STR
   "  Unix:"
   APR_EOL_STR
   "    ~/.subversion/servers"
   APR_EOL_STR
   "    ~/.subversion/config"
   APR_EOL_STR
   "    ~/.subversion/hairstyles"
   APR_EOL_STR
   "  Windows:"
   APR_EOL_STR
   "    %APPDATA%\\Subversion\\servers"
   APR_EOL_STR
   "    %APPDATA%\\Subversion\\config"
   APR_EOL_STR
   "    %APPDATA%\\Subversion\\hairstyles"
   APR_EOL_STR
   "    REGISTRY:HKCU\\Software\\Tigris.org\\Subversion\\Servers"
   APR_EOL_STR
   "    REGISTRY:HKCU\\Software\\Tigris.org\\Subversion\\Config"
   APR_EOL_STR
   "    REGISTRY:HKCU\\Software\\Tigris.org\\Subversion\\Hairstyles"
   APR_EOL_STR
   APR_EOL_STR;

      err = svn_io_file_open(&f, path,
                             (APR_WRITE | APR_CREATE | APR_EXCL),
                             APR_OS_DEFAULT,
                             pool);

      if (! err)
        {
          SVN_ERR(svn_io_file_write_full(f, contents, 
                                         strlen(contents), NULL, pool));
          SVN_ERR(svn_io_file_close(f, pool));
        }

      svn_error_clear(err);
    }