Line data    Source code

       1             : #include "fd_config_extract.h"
       2             : 
       3             : /* Find leftover ******************************************************/
       4             : 
       5             : /* fdctl_pod_find_leftover recursively searches for non-subpod keys in
       6             :    pod.  Prints to the warning log if it finds any.  Used to detect
       7             :    config keys that were not recognized by fdctl.  Returns 0 if no
       8             :    leftover key was found.  Otherwise, returns a non-zero number of
       9             :    segments of the leftover key.  The key can be reassembled by joining
      10             :    stack[0] .. stack[depth-1].
      11             : 
      12             :    Not thread safe (uses global buffer). */
      13             : 
      14           6 : # define FDCTL_CFG_MAX_DEPTH (16)
      15             : 
      16             : static ulong
      17             : fdctl_pod_find_leftover_recurse( uchar *       pod,
      18             :                                  char const ** stack,
      19         438 :                                  ulong         depth ) {
      20             : 
      21         438 :   if( FD_UNLIKELY( depth+1 >= FDCTL_CFG_MAX_DEPTH ) ) {
      22           0 :     FD_LOG_WARNING(( "configuration file has too many nested keys" ));
      23           0 :     return depth;
      24           0 :   }
      25             : 
      26         840 :   for( fd_pod_iter_t iter = fd_pod_iter_init( pod ); !fd_pod_iter_done( iter ); iter = fd_pod_iter_next( iter ) ) {
      27         408 :     fd_pod_info_t info = fd_pod_iter_info( iter );
      28         408 :     stack[ depth ] = info.key;
      29         408 :     depth++;
      30         408 :     if( FD_LIKELY( info.val_type == FD_POD_VAL_TYPE_SUBPOD ) ) {
      31         402 :       ulong sub_depth = fdctl_pod_find_leftover_recurse( (uchar *)info.val, stack, depth );
      32         402 :       if( FD_UNLIKELY( sub_depth ) ) return sub_depth;
      33         402 :     } else {
      34           6 :       return depth;
      35           6 :     }
      36         402 :     depth--;
      37         402 :   }
      38             : 
      39         432 :   return 0;
      40         438 : }
      41             : 
      42             : int
      43          36 : fdctl_pod_find_leftover( uchar * pod ) {
      44             : 
      45          36 :   static char const * stack[ FDCTL_CFG_MAX_DEPTH ];
      46          36 :   ulong depth = fdctl_pod_find_leftover_recurse( pod, stack, 0UL );
      47          36 :   if( FD_LIKELY( !depth ) ) return 1;
      48             : 
      49           6 :   static char path[ 64*FDCTL_CFG_MAX_DEPTH + 4 ];
      50           6 :   char * c   = fd_cstr_init( path );
      51           6 :   char * end = path + 64*FDCTL_CFG_MAX_DEPTH - 1;
      52          12 :   for( ulong j=0UL; j<depth; j++ ) {
      53           6 :     char const * key     = stack[j];
      54           6 :     ulong        key_len = strlen( key );
      55           6 :     if( c+key_len+1 >= end ) {
      56           0 :       c = fd_cstr_append_text( c, "...", 3UL );
      57           0 :       break;
      58           0 :     }
      59           6 :     c = fd_cstr_append_text( c, key, key_len );
      60           6 :     c = fd_cstr_append_char( c, '.' );
      61           6 :   }
      62           6 :   c -= 1;
      63           6 :   fd_cstr_fini( c );
      64             : 
      65           6 :   FD_LOG_WARNING(( "Config file contains unrecognized key `%s`", path ));
      66           6 :   return 0;
      67          36 : }