/* get next device */
static int
kbdint_next_device(Authctxt *authctxt, KbdintAuthctxt *kbdintctxt)
{
size_t len;
char *t;
int i;
if (kbdintctxt->device)
kbdint_reset_device(kbdintctxt);
do {
len = kbdintctxt->devices ?
strcspn(kbdintctxt->devices, ",") : 0;
if (len == 0)
break;
for (i = 0; devices[i]; i++) {
if (!auth2_method_allowed(authctxt,
"keyboard-interactive", devices[i]->name))
continue;
if (strncmp(kbdintctxt->devices, devices[i]->name, len) == 0)
kbdintctxt->device = devices[i];
}
t = kbdintctxt->devices;
kbdintctxt->devices = t[len] ? xstrdup(t+len+1) : NULL;
free(t);
debug2("kbdint_next_device: devices %s", kbdintctxt->devices ?
kbdintctxt->devices : "<empty>");
} while (kbdintctxt->devices && !kbdintctxt->device);
return kbdintctxt->device ? 1 : 0;
}
static char *
authmethods_get(Authctxt *authctxt)
{
struct sshbuf *b;
char *list;
int i, r;
if ((b = sshbuf_new()) == NULL)
fatal("%s: sshbuf_new failed", __func__);
for (i = 0; authmethods[i] != NULL; i++) {
if (strcmp(authmethods[i]->name, "none") == 0)
continue;
if (authmethods[i]->enabled == NULL ||
*(authmethods[i]->enabled) == 0)
continue;
if (!auth2_method_allowed(authctxt, authmethods[i]->name,
NULL))
continue;
if ((r = sshbuf_putf(b, "%s%s", sshbuf_len(b) ? "," : "",
authmethods[i]->name)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
}
if ((list = sshbuf_dup_string(b)) == NULL)
fatal("%s: sshbuf_dup_string failed", __func__);
sshbuf_free(b);
return list;
}
static char *
authmethods_get(Authctxt *authctxt)
{
Buffer b;
char *list;
u_int i;
buffer_init(&b);
for (i = 0; authmethods[i] != NULL; i++) {
if (strcmp(authmethods[i]->name, "none") == 0)
continue;
if (authmethods[i]->enabled == NULL ||
*(authmethods[i]->enabled) == 0)
continue;
if (!auth2_method_allowed(authctxt, authmethods[i]->name,
NULL))
continue;
if (buffer_len(&b) > 0)
buffer_append(&b, ",", 1);
buffer_append(&b, authmethods[i]->name,
strlen(authmethods[i]->name));
}
buffer_append(&b, "\0", 1);
list = xstrdup(buffer_ptr(&b));
buffer_free(&b);
return list;
}
static char *
authmethods_get(Authctxt *authctxt)
{
Buffer b;
char *list;
u_int i;
buffer_init(&b);
for (i = 0; authmethods[i] != NULL; i++) {
if (strcmp(authmethods[i]->name, "none") == 0)
continue;
if (authmethods[i]->enabled == NULL ||
*(authmethods[i]->enabled) == 0)
continue;
if (!auth2_method_allowed(authctxt, authmethods[i]->name,
NULL))
continue;
if (buffer_len(&b) > 0)
buffer_append(&b, ",", 1);
buffer_append(&b, authmethods[i]->name,
strlen(authmethods[i]->name));
}
if ((list = sshbuf_dup_string(&b)) == NULL)
fatal("%s: sshbuf_dup_string failed", __func__);
buffer_free(&b);
return list;
}
static Authmethod *
authmethod_lookup(Authctxt *authctxt, const char *name)
{
int i;
if (name != NULL)
for (i = 0; authmethods[i] != NULL; i++)
if (authmethods[i]->enabled != NULL &&
*(authmethods[i]->enabled) != 0 &&
strcmp(name, authmethods[i]->name) == 0 &&
auth2_method_allowed(authctxt,
authmethods[i]->name, NULL))
return authmethods[i];
debug2("Unrecognized authentication method name: %s",
name ? name : "NULL");
return NULL;
}
