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reverse-engineer subcommands sent during game join

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This commit is contained in:
Martin Michelsen
2022-10-03 21:44:30 -07:00
parent a16c207f4d
commit 50e1b79b1e
4 changed files with 142 additions and 14 deletions
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src/Main.cc
+13 -10
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@@ -233,8 +233,8 @@ The options are:\n\
--decompress-prs\n\
Compress or decompress data using the PRS algorithm. Both input-filename\n\
and output-filename may be specified.\n\
--decompress-gjs [input-filename [output-filename]]\n\
Decompress data using the GJS algorithm.Both input-filename and\n\
--decompress-bc0 [input-filename [output-filename]]\n\
Decompress data using the BC0 algorithm. Both input-filename and\n\
output-filename may be specified.\n\
--encrypt-data\n\
--decrypt-data\n\
@@ -309,7 +309,7 @@ enum class Behavior {
RUN_SERVER = 0,
COMPRESS_PRS,
DECOMPRESS_PRS,
DECOMPRESS_GJS,
DECOMPRESS_BC0,
ENCRYPT_DATA,
DECRYPT_DATA,
FIND_DECRYPTION_SEED,
@@ -323,7 +323,7 @@ enum class Behavior {
static bool behavior_takes_input_filename(Behavior b) {
return (b == Behavior::COMPRESS_PRS) ||
(b == Behavior::DECOMPRESS_PRS) ||
(b == Behavior::DECOMPRESS_GJS) ||
(b == Behavior::DECOMPRESS_BC0) ||
(b == Behavior::ENCRYPT_DATA) ||
(b == Behavior::DECRYPT_DATA) ||
(b == Behavior::DECODE_QUEST_FILE) ||
@@ -335,7 +335,7 @@ static bool behavior_takes_input_filename(Behavior b) {
static bool behavior_takes_output_filename(Behavior b) {
return (b == Behavior::COMPRESS_PRS) ||
(b == Behavior::DECOMPRESS_PRS) ||
(b == Behavior::DECOMPRESS_GJS) ||
(b == Behavior::DECOMPRESS_BC0) ||
(b == Behavior::ENCRYPT_DATA) ||
(b == Behavior::DECRYPT_DATA) ||
(b == Behavior::DECODE_SJIS);
@@ -374,8 +374,8 @@ int main(int argc, char** argv) {
behavior = Behavior::COMPRESS_PRS;
} else if (!strcmp(argv[x], "--decompress-prs")) {
behavior = Behavior::DECOMPRESS_PRS;
} else if (!strcmp(argv[x], "--decompress-gjs")) {
behavior = Behavior::DECOMPRESS_PRS;
} else if (!strcmp(argv[x], "--decompress-bc0")) {
behavior = Behavior::DECOMPRESS_BC0;
} else if (!strcmp(argv[x], "--encrypt-data")) {
behavior = Behavior::ENCRYPT_DATA;
} else if (!strcmp(argv[x], "--decrypt-data")) {
@@ -473,21 +473,24 @@ int main(int argc, char** argv) {
switch (behavior) {
case Behavior::COMPRESS_PRS:
case Behavior::DECOMPRESS_PRS:
case Behavior::DECOMPRESS_GJS: {
case Behavior::DECOMPRESS_BC0: {
string data = read_input_data();
if (parse_data) {
data = parse_data_string(data);
}
size_t input_bytes = data.size();
if (behavior == Behavior::COMPRESS_PRS) {
data = prs_compress(data);
} else if (behavior == Behavior::DECOMPRESS_PRS) {
data = prs_decompress(data);
} else if (behavior == Behavior::DECOMPRESS_GJS) {
data = gjs_decompress(data);
} else if (behavior == Behavior::DECOMPRESS_BC0) {
data = bc0_decompress(data);
} else {
throw logic_error("invalid behavior");
}
log_info("%zu (0x%zX) bytes input => %zu (0x%zX) bytes output",
input_bytes, input_bytes, data.size(), data.size());
write_output_data(data.data(), data.size());
break;