Refactor/Overhaul (#40)

* major refactor/overhaul move generation implementation to libumskt/* decouple CLI/Options (and JSON) from generation implementation set groundwork for future shared library use standardized PIDGEN2/PIDGEN3 naming convention create a Windows Docker file for quick compilation add Windows resouce file/header so we have an application icon on windows use icon from @Endermanch (used with permission) add support for fully-static linux/muslc-based compilation add support for a dos/windows (i486+) binary using djgpp add Dockerfile to compile gcc/djgpp/watt32/openssl to provide DOS (DPMI) binaries add @Endermanch 's Vista+ documentation update Readme for recent credits * begin work on C linkage and emscripten buildpath * Update CMake to include and build Crypto++ * move dllmain.cpp to the correct directory * add rust port info to README.md * re-add dropped changes from rebase * update build config, specify windows XP version number for crypto++ * update dos-djgpp action to use new cmake builder and options * update dos-djgpp to use UMSKT hosted forks * update other workflows to include standard header * remove crypto++ from build config for now * use the new `shell` parameter in `threeal/cmake-action` TODO: move to a stable version (v1.3.0) when ready * use full commit hash because a shortened hash is unsupported * add the required {0} parameter? * add openssl 3.1.1 to windows github runners * ensure linux matrix build compiles on the correct arch --------- Co-authored-by: Neo <321592+Neo-Desktop@users.noreply.github.com>
2023-07-09 00:08:43 -03:00
parent de04746c5e
commit 15cbe19006
35 changed files with 1520 additions and 242 deletions
--- a/src/libumskt/pidgen3/key.cpp
+++ b/src/libumskt/pidgen3/key.cpp
@@ -0,0 +1,86 @@
+/**
+ * This file is a part of the UMSKT Project
+ *
+ * Copyleft (C) 2019-2023 UMSKT Contributors (et.al.)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+
+ * 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 Affero General Public License for more details.
+
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @FileCreated by Neo on 5/26/2023
+ * @Maintainer Andrew
+ */
+
+#include "PIDGEN3.h"
+
+/* Converts from CD-key to a byte sequence. */
+void PIDGEN3::unbase24(BYTE *byteSeq, const char *cdKey) {
+    BYTE pDecodedKey[PK_LENGTH + NULL_TERMINATOR]{};
+    BIGNUM *y = BN_new();
+
+    BN_zero(y);
+
+    // Remove dashes from the CD-key and put it into a Base24 byte array.
+    for (int i = 0, k = 0; i < strlen(cdKey) && k < PK_LENGTH; i++) {
+        for (int j = 0; j < 24; j++) {
+            if (cdKey[i] != '-' && cdKey[i] == pKeyCharset[j]) {
+                pDecodedKey[k++] = j;
+                break;
+            }
+        }
+    }
+
+    // Empty byte sequence.
+    memset(byteSeq, 0, 16);
+
+    // Calculate the weighed sum of byte array elements.
+    for (int i = 0; i < PK_LENGTH; i++) {
+        BN_mul_word(y, PK_LENGTH - 1);
+        BN_add_word(y, pDecodedKey[i]);
+    }
+
+    // Acquire length.
+    int n = BN_num_bytes(y);
+
+    // Place the generated code into the byte sequence.
+    BN_bn2bin(y, byteSeq);
+    BN_free(y);
+
+    // Reverse the byte sequence.
+    endian(byteSeq, n);
+}
+
+/* Converts from byte sequence to the CD-key. */
+void PIDGEN3::base24(char *cdKey, BYTE *byteSeq) {
+    BYTE rbyteSeq[16];
+    BIGNUM *z;
+
+    // Copy byte sequence to the reversed byte sequence.
+    memcpy(rbyteSeq, byteSeq, sizeof(rbyteSeq));
+
+    // Skip trailing zeroes and reverse y.
+    int length;
+
+    for (length = 15; rbyteSeq[length] == 0; length--);
+    endian(rbyteSeq, ++length);
+
+    // Convert reversed byte sequence to BigNum z.
+    z = BN_bin2bn(rbyteSeq, length, nullptr);
+
+    // Divide z by 24 and convert the remainder to a CD-key char.
+    cdKey[25] = 0;
+
+    for (int i = 24; i >= 0; i--)
+        cdKey[i] = pKeyCharset[BN_div_word(z, 24)];
+
+    BN_free(z);
+}