/*
* Remove method from the start of a comma-separated list of methods.
* Returns 0 if the list of methods did not start with that method or 1
* if it did.
*/
static int
remove_method(char **methods, const char *method)
{
char *omethods = *methods;
size_t l = strlen(method);
if (!list_starts_with(omethods, method))
return 0;
*methods = xstrdup(omethods + l + (omethods[l] == ',' ? 1 : 0));
free(omethods);
return 1;
}
/*
* Checks whether method is allowed by at least one AuthenticationMethods
* methods list. Returns 1 if allowed, or no methods lists configured.
* 0 otherwise.
*/
static int
method_allowed(Authctxt *authctxt, const char *method)
{
u_int i;
/*
* NB. authctxt->num_auth_methods might be zero as a result of
* auth2_setup_methods_lists(), so check the configuration.
*/
if (options.num_auth_methods == 0)
return 1;
for (i = 0; i < authctxt->num_auth_methods; i++) {
if (list_starts_with(authctxt->auth_methods[i], method))
return 1;
}
return 0;
}
/*
* Remove method from the start of a comma-separated list of methods.
* Returns 0 if the list of methods did not start with that method or 1
* if it did.
*/
static int
remove_method(char **methods, const char *method, const char *submethod)
{
char *omethods = *methods, *p;
size_t l = strlen(method);
int match;
match = list_starts_with(omethods, method, submethod);
if (match != MATCH_METHOD && match != MATCH_BOTH)
return 0;
p = omethods + l;
if (submethod && match == MATCH_BOTH)
p += 1 + strlen(submethod); /* include colon */
if (*p == ',')
p++;
*methods = xstrdup(p);
free(omethods);
return 1;
}
