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Add a private option into adept_remove to provide encryption key

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This commit is contained in:
Grégory Soutadé
2022-03-12 23:04:16 +01:00
parent 9b946a62b4
commit 0f475423c0
4 changed files with 100 additions and 21 deletions
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59
utils/adept_remove.cpp
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@@ -55,6 +55,23 @@ static const char* defaultDirs[] = {
"./adobe-digital-editions/",
"./.adobe-digital-editions/"
};
static char* encryptionKeyUser = 0;
static unsigned char* encryptionKey = 0;
static unsigned encryptionKeySize = 0;
static inline unsigned char htoi(unsigned char c)
{
if (c >= '0' && c <= '9')
c -= '0';
else if (c >= 'a' && c <= 'f')
c -= 'a' - 10;
else if (c >= 'A' && c <= 'F')
c -= 'A' - 10;
else
EXCEPTION(gourou::USER_INVALID_INPUT, "Invalid character " << c << " in encryption key");
return c;
}
static inline bool endsWith(const std::string& s, const std::string& suffix)
{
@@ -110,7 +127,7 @@ public:
{
EXCEPTION(gourou::DRM_FILE_ERROR, "Unable to copy " << inputFile << " into " << filename);
}
processor.removeDRM(inputFile, filename, type);
processor.removeDRM(inputFile, filename, type, encryptionKey, encryptionKeySize);
std::cout << "DRM removed into new file " << filename << std::endl;
}
else
@@ -121,7 +138,7 @@ public:
QTemporaryFile tempFile;
tempFile.open();
tempFile.setAutoRemove(false); // In case of failure
processor.removeDRM(inputFile, tempFile.fileName().toStdString(), type);
processor.removeDRM(inputFile, tempFile.fileName().toStdString(), type, encryptionKey, encryptionKeySize);
/* Original file must be removed before doing a copy... */
QFile origFile(inputFile);
origFile.remove();
@@ -132,7 +149,7 @@ public:
tempFile.setAutoRemove(true);
}
else
processor.removeDRM(inputFile, filename, type);
processor.removeDRM(inputFile, filename, type, encryptionKey, encryptionKeySize);
std::cout << "DRM removed from " << filename << std::endl;
}
} catch(std::exception& e)
@@ -213,14 +230,14 @@ int main(int argc, char** argv)
{"output-dir", required_argument, 0, 'O' },
{"output-file", required_argument, 0, 'o' },
{"input-file", required_argument, 0, 'f' },
{"export-private-key",no_argument, 0, 'e' },
{"encryption-key", required_argument, 0, 'K' }, // Private option
{"verbose", no_argument, 0, 'v' },
{"version", no_argument, 0, 'V' },
{"help", no_argument, 0, 'h' },
{0, 0, 0, 0 }
};
c = getopt_long(argc, argv, "d:a:k:O:o:f:evVh",
c = getopt_long(argc, argv, "d:a:k:O:o:f:K:vVh",
long_options, &option_index);
if (c == -1)
break;
@@ -244,6 +261,9 @@ int main(int argc, char** argv)
case 'o':
outputFile = optarg;
break;
case 'K':
encryptionKeyUser = optarg;
break;
case 'v':
verbose++;
break;
@@ -286,6 +306,32 @@ int main(int argc, char** argv)
}
}
if (encryptionKeyUser)
{
int size = std::string(encryptionKeyUser).size();
if ((size % 2))
{
std::cout << "Error : Encryption key must be odd length" << std::endl;
goto end;
}
if (encryptionKeyUser[0] == '0' && encryptionKeyUser[1] == 'x')
{
encryptionKeyUser += 2;
size -= 2;
}
encryptionKey = new unsigned char[size/2];
for(i=0; i<size; i+=2)
{
encryptionKey[i/2] = htoi(encryptionKeyUser[i]) << 4;
encryptionKey[i/2] |= htoi(encryptionKeyUser[i+1]);
}
encryptionKeySize = size/2;
}
if (hasErrors)
goto end;
@@ -300,5 +346,8 @@ end:
free((void*)*files[i]);
}
if (encryptionKey)
free(encryptionKey);
return ret;
}