static int
logic_field(pam_handle_t *pamh, const void *me, const char *x, int rule,
int (*agrees)(pam_handle_t *pamh,
const void *, const char *, int, int))
{
int left=FALSE, right, not=FALSE;
operator oper=OR;
int at=0, l;
expect next=VAL;
while ((l = logic_member(x,&at))) {
int c = x[at];
if (next == VAL) {
if (c == '!')
not = !not;
else if (isalpha(c) || c == '*' || isdigit(c) || c == '_'
|| c == '-' || c == '.' || c == '/' || c == ':') {
right = not ^ agrees(pamh, me, x+at, l, rule);
if (oper == AND)
left &= right;
else
left |= right;
next = OP;
} else {
pam_syslog(pamh, LOG_ERR,
"garbled syntax; expected name (rule #%d)",
rule);
return FALSE;
}
} else { /* OP */
switch (c) {
case '&':
oper = AND;
break;
case '|':
oper = OR;
break;
default:
pam_syslog(pamh, LOG_ERR,
"garbled syntax; expected & or | (rule #%d)",
rule);
D(("%c at %d",c,at));
return FALSE;
}
next = VAL;
}
at += l;
}
return left;
}
static boolean logic_field(const void *me, const char *x, int rule,
boolean (*agrees)(const void *, const char *
, int, int))
{
boolean left=FALSE, right, not=FALSE;
operator oper=OR;
int at=0, l;
expect next=VAL;
while ((l = logic_member(x,&at))) {
int c = x[at];
if (next == VAL) {
if (c == '!')
not = !not;
else if (isalpha(c) || c == '*') {
right = not ^ agrees(me, x+at, l, rule);
if (oper == AND)
left &= right;
else
left |= right;
next = OP;
} else {
_log_err("garbled syntax; expected name (rule #%d)", rule);
return FALSE;
}
} else { /* OP */
switch (c) {
case '&':
oper = AND;
break;
case '|':
oper = OR;
break;
default:
_log_err("garbled syntax; expected & or | (rule #%d)"
, rule);
D(("%c at %d",c,at));
return FALSE;
}
next = VAL;
}
at += l;
}
return left;
}