// ind debug mode we have our own main function
int main()
{
char buf[1024];
//snprintf(buf,sizeof(buf), "SELECT * FROM users WHERE laston=unix_timestamp()+10*20+fn() AND user_level>1 ORDER BY userid ASC");
snprintf(buf,sizeof(buf), "SELECT * FROM users WHERE laston=1");
scan_buffer(buf);
snprintf(buf,sizeof(buf), "select 1 from user where 1 -- commnent");
scan_buffer(buf);
std::string s;
while (std::cin)
{
memset(p_risk, 0, sizeof(struct query_risk));
std::getline(std::cin, s);
//std::cout << "line: " << s << std::endl;
scan_buffer(s.c_str());
free_sql_strings();
free_expressions();
if (p_risk->has_tautology)
{
printf("query has tautology\n");
}
}
//free_sql_strings();
//free_expressions();
return 1;
}
bool query_parse(struct query_risk * q_risk,
SQLPatterns * sql_patterns, const char * q)
{
p_risk = q_risk;
//bzero(q_risk, sizeof(struct query_risk));
memset(q_risk, 0, sizeof(struct query_risk));
patterns = sql_patterns;
#ifndef WIN32
scan_buffer(q);
#endif
free_sql_strings();
free_expressions();
return true;
}
void free_expression(struct expr *e)
{
switch (e->exprtype)
{
case valtype:
free_val(e->val.val);
break;
case binopexprtype:
free_expression(e->val.binopexpr.e1);
free_expression(e->val.binopexpr.e2);
break;
case unopexprtype:
free_expression(e->val.unopexpr.e);
break;
case arrayexprtype:
free_expression(e->val.arrayexpr.e1);
free_expressions(e->val.arrayexpr.indices);
break;
case identtype:
free(e->val.ident);
break;
case dereftype:
free_expression(e->val.deref.e);
break;
case funcalltype:
free_args(e->val.funcall.args);
free(e->val.funcall.fun_ident);
break;
case structelttype:
free_expression(e->val.structelt.record);
free(e->val.structelt.field);
default:
break;
}
if (e->type)
free(e->type);
free(e);
}
void free_caseblock(struct caseblock *caseblock)
{
free_expressions(caseblock->exprlist);
free_instructions(caseblock->instructions);
free(caseblock);
}
