/* the "incl" state is used for picking up the name of an include file */
%x incl
+%option nounput
+%option noinput
+%option never-interactive
+
%{
+#include <assert.h>
+#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX_INCLUDE_DEPTH 10
struct include_stack_item {
YY_BUFFER_STATE bst;
- uint32_t lineno;
- string_t file;
+ int lineno;
+ cstring_t file;
};
struct include_stack_item include_stack[MAX_INCLUDE_DEPTH];
int include_stack_ptr=0;
-uint32_t config_lineno=0;
-string_t config_file="xxx";
+int config_lineno=0;
+cstring_t config_file="xxx";
static struct p_node *leafnode(uint32_t type)
{
static struct p_node *numnode(string_t number)
{
struct p_node *r;
+ unsigned long n;
r=leafnode(T_NUMBER);
- r->data.number=atoi(number);
+ errno = 0;
+ n = strtoul(number, NULL, 10);
+ /* The caller is expected to only give us [0-9]+,
+ * so we skip some of the usual syntax checking. */
+ r->data.number=n;
+ /* Give a consistent error message for any kind of
+ * out-of-range condition */
+ if(errno == ERANGE || n != r->data.number) {
+ Message(M_FATAL,"config file %s line %d: '%s' is too big\n",
+ config_file, config_lineno, number);
+ exit(1);
+ }
+ if(errno) {
+ Message(M_FATAL,"config file %s line %d: '%s': %s\n",
+ config_file, config_lineno, number, strerror(errno));
+ exit(1);
+ }
return r;
}
yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
BEGIN(INITIAL);
}
+<incl>\n { /* include with no filename */
+ Message(M_FATAL,"config file %s line %d: %s\n",config_file,
+ config_lineno,"``include'' requires a filename");
+ BEGIN(INITIAL);
+ assert(config_lineno < INT_MAX);
+ ++config_lineno;
+ ++yynerrs;
+}
+
<<EOF>> {
if (--include_stack_ptr < 0) {
yyterminate();