Squashed 'external/toxcore/c-toxcore/' content from commit 67badf69

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: 67badf69416a74e74f6d7eb51dd96f37282b8455

auto_tests/file_saving_test.c

@@ -0,0 +1,121 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright © 2016-2018 The TokTok team.
+ * Copyright © 2016 Tox project.
+ */
+
+/*
+ * Small test for checking if obtaining savedata, saving it to disk and using
+ * works correctly.
+ */
+
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../testing/misc_tools.h"
+#include "../toxcore/ccompat.h"
+#include "auto_test_support.h"
+#include "check_compat.h"
+
+#include "../toxencryptsave/toxencryptsave.h"
+
+static const char *pphrase = "bar";
+static const char *name = "foo";
+static const char *savefile = "./save";
+
+static void save_data_encrypted(void)
+{
+    struct Tox_Options *options = tox_options_new(nullptr);
+    Tox *t = tox_new_log(options, nullptr, nullptr);
+    tox_options_free(options);
+
+    tox_self_set_name(t, (const uint8_t *)name, strlen(name), nullptr);
+
+    FILE *f = fopen(savefile, "wb");
+
+    size_t size = tox_get_savedata_size(t);
+    uint8_t *clear = (uint8_t *)malloc(size);
+
+    /*this function does not write any data at all*/
+    tox_get_savedata(t, clear);
+
+    size += TOX_PASS_ENCRYPTION_EXTRA_LENGTH;
+    uint8_t *cipher = (uint8_t *)malloc(size);
+
+    Tox_Err_Encryption eerr;
+
+    ck_assert_msg(tox_pass_encrypt(clear, size - TOX_PASS_ENCRYPTION_EXTRA_LENGTH, (const uint8_t *)pphrase,
+                                   strlen(pphrase), cipher,
+                                   &eerr), "Could not encrypt, error code %d.", eerr);
+
+    size_t written_value = fwrite(cipher, sizeof(*cipher), size, f);
+    printf("written written_value = %u of %u\n", (unsigned)written_value, (unsigned)size);
+
+    free(cipher);
+    free(clear);
+    fclose(f);
+    tox_kill(t);
+}
+
+static void load_data_decrypted(void)
+{
+    FILE *f = fopen(savefile, "rb");
+    ck_assert(f != nullptr);
+    fseek(f, 0, SEEK_END);
+    int64_t size = ftell(f);
+    fseek(f, 0, SEEK_SET);
+
+    ck_assert_msg(0 <= size && size <= UINT_MAX, "file size out of range");
+
+    uint8_t *cipher = (uint8_t *)malloc(size);
+    ck_assert(cipher != nullptr);
+    uint8_t *clear = (uint8_t *)malloc(size - TOX_PASS_ENCRYPTION_EXTRA_LENGTH);
+    ck_assert(clear != nullptr);
+    size_t read_value = fread(cipher, sizeof(*cipher), size, f);
+    printf("Read read_value = %u of %u\n", (unsigned)read_value, (unsigned)size);
+
+    Tox_Err_Decryption derr;
+
+    ck_assert_msg(tox_pass_decrypt(cipher, size, (const uint8_t *)pphrase, strlen(pphrase), clear, &derr),
+                  "Could not decrypt, error code %d.", derr);
+
+    struct Tox_Options *options = tox_options_new(nullptr);
+    ck_assert(options != nullptr);
+
+    tox_options_set_savedata_type(options, TOX_SAVEDATA_TYPE_TOX_SAVE);
+
+    tox_options_set_savedata_data(options, clear, size);
+
+    Tox_Err_New err;
+
+    Tox *t = tox_new_log(options, &err, nullptr);
+
+    tox_options_free(options);
+
+    ck_assert_msg(t != nullptr, "tox_new returned the error value %d", err);
+
+    uint8_t *readname = (uint8_t *)malloc(tox_self_get_name_size(t));
+    ck_assert(readname != nullptr);
+    tox_self_get_name(t, readname);
+
+    ck_assert_msg(memcmp(readname, name, tox_self_get_name_size(t)) == 0,
+                  "name returned by tox_self_get_name does not match expected result");
+
+    tox_kill(t);
+    free(clear);
+    free(cipher);
+    free(readname);
+    fclose(f);
+}
+
+int main(void)
+{
+    setvbuf(stdout, nullptr, _IONBF, 0);
+    save_data_encrypted();
+    load_data_decrypted();
+
+    ck_assert_msg(remove(savefile) == 0, "Could not remove the savefile.");
+
+    return 0;
+}