Move cmd functions to separate files.

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>

src/openpgp/cmd_select.c

@@ -0,0 +1,86 @@
+/*
+ * This file is part of the Pico OpenPGP distribution (https://github.com/polhenarejos/pico-openpgp).
+ * Copyright (c) 2022 Pol Henarejos.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "openpgp.h"
+
+int cmd_select() {
+    uint8_t p1 = P1(apdu);
+    uint8_t p2 = P2(apdu);
+    file_t *pe = NULL;
+    uint16_t fid = 0x0;
+
+    if (apdu.nc >= 2) {
+        fid = get_uint16_t_be(apdu.data);
+    }
+
+    if (!pe) {
+        if (p1 == 0x0) { //Select MF, DF or EF - File identifier or absent
+            if (apdu.nc == 0) {
+                pe = (file_t *) MF;
+                //ac_fini();
+            }
+            else if (apdu.nc == 2) {
+                if (!(pe = search_by_fid(fid, NULL, SPECIFY_ANY))) {
+                    return SW_REFERENCE_NOT_FOUND();
+                }
+            }
+        }
+        else if (p1 == 0x01) { //Select child DF - DF identifier
+            if (!(pe = search_by_fid(fid, currentDF, SPECIFY_DF))) {
+                return SW_REFERENCE_NOT_FOUND();
+            }
+        }
+        else if (p1 == 0x02) { //Select EF under the current DF - EF identifier
+            if (!(pe = search_by_fid(fid, currentDF, SPECIFY_EF))) {
+                return SW_REFERENCE_NOT_FOUND();
+            }
+        }
+        else if (p1 == 0x03) { //Select parent DF of the current DF - Absent
+            if (apdu.nc != 0) {
+                return SW_REFERENCE_NOT_FOUND();
+            }
+        }
+        else if (p1 == 0x04) { //Select by DF name - e.g., [truncated] application identifier
+            if (!(pe = search_by_name(apdu.data, apdu.nc))) {
+                return SW_REFERENCE_NOT_FOUND();
+            }
+            if (card_terminated) {
+                return set_res_sw(0x62, 0x85);
+            }
+        }
+        else if (p1 == 0x08) { //Select from the MF - Path without the MF identifier
+            if (!(pe = search_by_path(apdu.data, apdu.nc, MF))) {
+                return SW_REFERENCE_NOT_FOUND();
+            }
+        }
+        else if (p1 == 0x09) { //Select from the current DF - Path without the current DF identifier
+            if (!(pe = search_by_path(apdu.data, apdu.nc, currentDF))) {
+                return SW_REFERENCE_NOT_FOUND();
+            }
+        }
+    }
+    if ((p2 & 0xfc) == 0x00 || (p2 & 0xfc) == 0x04) {
+        if ((p2 & 0xfc) == 0x04) {
+            process_fci(pe, 0);
+        }
+    }
+    else {
+        return SW_INCORRECT_P1P2();
+    }
+    select_file(pe);
+    return SW_OK();
+}