137 lines
3 KiB
D
137 lines
3 KiB
D
module actions;
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import std.stdio : File, stdin, stdout, writeln;
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import std.base64 : Base64;
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import std.random : Random, uniform;
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import std.algorithm : joiner;
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import cipher;
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public:
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enum chunkSize = 4096;
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enum base64ChunkSize = 57;
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enum string randomDeviceName = "/dev/random";
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void encrypt(string keyFileName, Cipher cipher, bool armor)
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{
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immutable key = loadKey(keyFileName, armor);
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immutable ubyte[8] nonce;
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if (armor)
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{
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ubyte[base64ChunkSize] buf;
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char[Base64.encodeLength(base64ChunkSize)] buf2;
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int counter;
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foreach (b; stdin.byChunk(chunkSize).joiner.cipherFunction(key, nonce, cipher))
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{
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buf[counter] = b;
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++counter;
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if (counter == 57)
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{
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Base64.encode(buf, buf2[]);
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stdout.writeln(buf2);
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counter = 0;
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}
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}
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if (counter > 0)
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{
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Base64.encode(buf[0..counter], buf2[]);
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stdout.writeln(buf2[0..Base64.encodeLength(counter)]);
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}
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}
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else
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{
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ubyte[chunkSize] buf;
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int counter;
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foreach (b; stdin.byChunk(chunkSize).joiner.cipherFunction(key, nonce, cipher))
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{
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buf[counter] = b;
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++counter;
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if (counter == chunkSize)
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{
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stdout.rawWrite(buf);
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counter = 0;
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}
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}
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if (counter > 0)
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stdout.rawWrite(buf[0..counter]);
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}
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}
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void decrypt(string keyFileName, Cipher cipher, bool armor)
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{
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import std.range : inputRangeObject, InputRange;
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immutable key = loadKey(keyFileName, armor);
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immutable ubyte[8] nonce;
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ubyte[chunkSize] buf;
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int counter;
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InputRange!ubyte r;
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if (armor)
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r = Base64.decoder(stdin.byLine).joiner.cipherFunction(key, nonce, cipher).inputRangeObject;
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else
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r = stdin.byChunk(chunkSize).joiner.cipherFunction(key, nonce, cipher).inputRangeObject;
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foreach (b; r)
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{
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buf[counter] = b;
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++counter;
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if (counter == 4096)
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{
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stdout.rawWrite(buf);
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counter = 0;
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}
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}
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if(counter > 0)
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stdout.rawWrite(buf[0..counter]);
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}
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void generateKey(bool armor)
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{
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auto rng = Random();
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auto randomDevice = File(randomDeviceName, "r");
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scope (exit)
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randomDevice.close();
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uint[1] seed;
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randomDevice.rawRead(seed);
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rng.seed(seed[0]);
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ubyte[32] key;
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foreach (ref b; key)
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b = uniform!ubyte(rng);
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if (armor)
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{
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writeln(Base64.encode(key));
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}
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else
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{
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stdout.rawWrite(key);
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}
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}
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void bench()
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{
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}
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private:
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ubyte[32] loadKey(string filename, bool armor)
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{
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auto keyFile = File(filename, "r");
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scope (exit)
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keyFile.close();
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ubyte[32] key;
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ubyte[33] temp;
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if (armor)
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{
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import std.string : chomp;
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key = Base64.decode(keyFile.readln.chomp, temp[]);
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}
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else
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{
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keyFile.rawRead(key);
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}
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return key;
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}
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