rspamd/src/ragel/smtp_date_parser.rl

%%{

  machine smtp_date_parser;
  alphtype unsigned char;
  include smtp_base "smtp_base.rl";
  include smtp_date "smtp_date.rl";

  main := date_time;
}%%

#include "smtp_parsers.h"
#include "util.h"

%% write data;

uint64_t
rspamd_parse_smtp_date (const unsigned char *data, size_t len, GError **err)
{
  const unsigned char *p = data, *pe = data + len, *eof = data + len, *tmp = data;
  struct tm tm;
  glong tz = 0;
  int cs = 0, *stack = NULL;;
  gsize top = 0;

  memset (&tm, 0, sizeof (tm));

  struct _ragel_st_storage {
    int *data;
    gsize size;
  } st_storage;
  memset (&st_storage, 0, sizeof (st_storage));

  %% write init;
  %% write exec;

    if (st_storage.data) {
        free (st_storage.data);
    }

  if ( cs < %%{ write first_final; }%% ) {
    g_set_error (err, g_quark_from_static_string ("smtp_date"), cs, "invalid date at offset %d (%c), state %d",
			(int)(p - data), (*p > 0 && *p < 128) ? *p : '?', cs);
    return (uint64_t)(-1);
  }

  return rspamd_tm_to_time (&tm, tz);
}