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Implement the magic-cookie check and its test.

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Eric S. Raymond 2023-04-06 19:03:02 -04:00
parent d16822a583
commit 58cf204eba
4 changed files with 34 additions and 1 deletions
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4
saveresume.c
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@ -135,7 +135,9 @@ int restore(FILE* fp)
IGNORE(fread(&save, sizeof(struct save_t), 1, fp));
fclose(fp);
if (save.version != SAVE_VERSION) {
if (memcmp(save.magic, ADVENT_MAGIC, sizeof(ADVENT_MAGIC)) != 0)
rspeak(BAD_SAVE);
else if (save.version != SAVE_VERSION) {
rspeak(VERSION_SKEW, save.version / 10, MOD(save.version, 10), SAVE_VERSION / 10, MOD(SAVE_VERSION, 10));
} else if (!is_valid(save.game)) {
rspeak(SAVE_TAMPERING);