/* returns success or failure, and the keytype in *type. If we want
* to restrict the type, type can contain a type to return */
int readhostkey(const char * filename, sign_key * hostkey, int *type) {
int ret = DROPBEAR_FAILURE;
buffer *buf;
buf = buf_new(MAX_PRIVKEY_SIZE);
if (buf_readfile(buf, filename) == DROPBEAR_FAILURE) {
goto out;
}
buf_setpos(buf, 0);
addrandom(buf_getptr(buf, buf->len), buf->len);
if (buf_get_priv_key(buf, hostkey, type) == DROPBEAR_FAILURE) {
goto out;
}
ret = DROPBEAR_SUCCESS;
out:
buf_burn(buf);
buf_free(buf);
return ret;
}
/* returns success or failure */
static int readhostkey(const char * filename, sign_key * hostkey, int type) {
int ret = DROPBEAR_FAILURE;
int i;
buffer *buf;
buf = buf_new(2000);
if (buf_readfile(buf, filename) == DROPBEAR_FAILURE) {
goto out;
}
buf_setpos(buf, 0);
if (buf_get_priv_key(buf, hostkey, type) == DROPBEAR_FAILURE) {
goto out;
}
ret = DROPBEAR_SUCCESS;
out:
if (ret == DROPBEAR_FAILURE) {
for (i = 0; sshhostkey[i].name != NULL; i++) {
if (sshhostkey[i].val == type) {
sshhostkey[i].usable = 0;
break;
}
}
fprintf(stderr, "Failed reading '%s', disabling %s\n", filename,
type == DROPBEAR_SIGNKEY_DSS ? "DSS" : "RSA");
}
buf_burn(buf);
buf_free(buf);
return ret;
}
static int printpubfile(const char* filename) {
buffer *buf = NULL;
sign_key *key = NULL;
enum signkey_type keytype;
int ret;
int err = DROPBEAR_FAILURE;
buf = buf_new(MAX_PRIVKEY_SIZE);
ret = buf_readfile(buf, filename);
if (ret != DROPBEAR_SUCCESS) {
fprintf(stderr, "Failed reading '%s'\n", filename);
goto out;
}
key = new_sign_key();
keytype = DROPBEAR_SIGNKEY_ANY;
buf_setpos(buf, 0);
ret = buf_get_priv_key(buf, key, &keytype);
if (ret == DROPBEAR_FAILURE) {
fprintf(stderr, "Bad key in '%s'\n", filename);
goto out;
}
printpubkey(key, keytype);
err = DROPBEAR_SUCCESS;
out:
buf_burn(buf);
buf_free(buf);
buf = NULL;
if (key) {
sign_key_free(key);
key = NULL;
}
return err;
}
