diff options
| -rw-r--r-- | scumm/resource.cpp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/scumm/resource.cpp b/scumm/resource.cpp index 59bfca15ed..367a437e18 100644 --- a/scumm/resource.cpp +++ b/scumm/resource.cpp @@ -50,6 +50,8 @@ extern const char *resTypeFromId(int id); static uint16 newTag2Old(uint32 newTag); static const byte *findResourceSmall(uint32 tag, const byte *searchin); +static bool checkTryMedia(BaseScummFile *handle); + /* Open a room */ void ScummEngine::openRoom(const int room) { @@ -361,6 +363,15 @@ void ScummEngine::readIndexFile() { _fileHandle->seek(0, SEEK_SET); } +#ifndef DISABLE_HE + if (checkTryMedia(_fileHandle)) { + displayMessage(NULL, "You're trying to run game encrypted by ActiveMark. This is not supported."); + _quit = true; + + return; + } +#endif + while (true) { blocktype = fileReadDword(); itemsize = _fileHandle->readUint32BE(); @@ -378,6 +389,40 @@ void ScummEngine::readIndexFile() { closeRoom(); } + +#ifndef DISABLE_HE + +#define TRYMEDIA_MARK_LEN 6 + +bool checkTryMedia(BaseScummFile *handle) { + byte buf[TRYMEDIA_MARK_LEN]; + bool matched; + const byte magic[2][TRYMEDIA_MARK_LEN] = + {{ 0x00, 'T', 'M', 'S', 'A', 'M' }, + { 'i', '=', '$', ':', '(', '$' }}; // Same but 0x69 xored + + handle->read(buf, TRYMEDIA_MARK_LEN); + + for (int i = 0; i < 2; i++) { + matched = true; + for (int j = 0; j < TRYMEDIA_MARK_LEN; j++) + if (buf[j] != magic[i][j]) + matched = false; + + if (matched) + break; + } + + if (matched) + return true; + + handle->seek(0, SEEK_SET); + + return false; +} +#endif + + #ifndef DISABLE_SCUMM_7_8 void ScummEngine_v7::readIndexBlock(uint32 blocktype, uint32 itemsize) { int num; |