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-rw-r--r--src/file.c99
1 files changed, 60 insertions, 39 deletions
diff --git a/src/file.c b/src/file.c
index 1d4dc74..aa7e00d 100644
--- a/src/file.c
+++ b/src/file.c
@@ -21,56 +21,60 @@
#include <stdlib.h>
#include "extract.h"
+#include "file.h"
#define ADLR_MAGIC 0x726c6461
#define SEGM_MAGIC 0x6d676573
#define INFO_MAGIC 0x6f666e69
#define TIME_MAGIC 0x656d6974
-void read_info_chunk(memory_stream *data_stream);
-void read_segm_chunk(memory_stream *data_stream);
-void read_adlr_chunk(memory_stream *data_stream);
-void read_time_chunk(memory_stream *data_stream);
+void read_info_chunk(memory_stream *data_stream, file_node *parsed);
+void read_adlr_chunk(memory_stream *data_stream, file_node *parsed);
+void read_time_chunk(memory_stream *data_stream, file_node *parsed);
+void read_segm_chunk(memory_stream *data_stream, file_node *parsed,
+ uint64_t segment_count);
-/* Document and update documentation in header file. */
-void read_file_entry(memory_stream *data_stream, Bytef *section_end) {
+/* Creates a file node by parsing a file entry. */
+file_node *read_file_entry(memory_stream *data_stream, Bytef *section_end) {
uint32_t entry_magic;
uint64_t entry_size;
+ file_node *parsed = calloc(sizeof(file_node), 1);
while (data_stream->data < section_end) {
read_stream(&entry_magic, &data_stream->data, sizeof(uint32_t));
read_stream(&entry_size, &data_stream->data, sizeof(uint64_t));
switch (entry_magic) {
case ADLR_MAGIC:
- printf("[ADLR found at 0x%lx]\n", data_stream->data - data_stream->start);
- read_adlr_chunk(data_stream);
+ printf("[ADLR found at 0x%lx]\n", data_stream->data - data_stream->start - 12);
+ read_adlr_chunk(data_stream, parsed);
break;
case SEGM_MAGIC:
- printf("[SEGM found at 0x%lx]\n", data_stream->data - data_stream->start);
- read_segm_chunk(data_stream);
+ printf("[SEGM found at 0x%lx]\n", data_stream->data - data_stream->start - 12);
+ read_segm_chunk(data_stream, parsed, entry_size);
break;
case INFO_MAGIC:
- printf("[INFO found at 0x%lx]\n", data_stream->data - data_stream->start);
- read_info_chunk(data_stream);
+ printf("[INFO found at 0x%lx]\n", data_stream->data - data_stream->start - 12);
+ read_info_chunk(data_stream, parsed);
break;
case TIME_MAGIC:
- printf("[TIME found at 0x%lx]\n", data_stream->data - data_stream->start);
- read_time_chunk(data_stream);
+ printf("[TIME found at 0x%lx]\n", data_stream->data - data_stream->start - 12);
+ read_time_chunk(data_stream, parsed);
break;
default:
- printf("New magic discovered: %" PRIx32 " size: %" PRIx64 "\n", entry_magic, entry_size); // Debug.
+ printf("Unknown magic: %" PRIx32 " size: %" PRIx64 "\n", entry_magic, entry_size); // Debug.
}
}
printf("\n\n\n\n"); // Debug.
+ return parsed;
}
/* Document */
-void read_info_chunk(memory_stream *data_stream) {
- uint32_t flags;
+void read_info_chunk(memory_stream *data_stream, file_node *parsed) {
+ uint32_t encrypted;
uint64_t decompressed_size, compressed_size;
uint16_t file_name_size;
- read_stream(&flags, &data_stream->data, sizeof(uint32_t));
+ read_stream(&encrypted, &data_stream->data, sizeof(uint32_t));
read_stream(&decompressed_size, &data_stream->data, sizeof(uint64_t));
read_stream(&compressed_size, &data_stream->data, sizeof(uint64_t));
read_stream(&file_name_size, &data_stream->data, sizeof(uint16_t));
@@ -79,7 +83,7 @@ void read_info_chunk(memory_stream *data_stream) {
read_stream(file_name, &data_stream->data, file_name_size * 2);
printf("\nINFO SEGMENT\n");
printf("------------\n");
- printf("FLAGS: %" PRIx32 "\n", flags);
+ printf("%s\n", encrypted ? "ENCRYPTED": "PLAINTEXT");
printf("COMPRESSED_SIZE: %" PRIx64 "\n", compressed_size);
printf("DECOMPRESSED_SIZE: %" PRIx64 "\n", decompressed_size);
printf("MD5: ");
@@ -94,36 +98,53 @@ void read_info_chunk(memory_stream *data_stream) {
/* Document */
-void read_segm_chunk(memory_stream *data_stream) {
- uint32_t flags;
- uint64_t offset, compressed_size, decompressed_size;
- read_stream(&flags, &data_stream->data, sizeof(uint32_t));
- read_stream(&offset, &data_stream->data, sizeof(uint64_t));
- read_stream(&compressed_size, &data_stream->data, sizeof(uint64_t));
- read_stream(&decompressed_size, &data_stream->data, sizeof(uint64_t));
- printf("\nSEGM SEGMENT\n");
- printf("------------\n");
- printf("FLAGS: %" PRIx32 "\n", flags);
- printf("MEM_OFFSET: %" PRIx64 "\n", offset);
- printf("DECOMPRESSED_SIZE: %" PRIx64 "\n", decompressed_size);
- printf("COMPRESSED_SIZE: %" PRIx64 "\n\n", compressed_size);
- /* Entries can be between the segment chunk and the actual file
- data, so processing the file has to be deferred for later. */
+void read_segm_chunk(memory_stream *data_stream, file_node *parsed,
+ uint64_t segment_count) {
+ /* The segment_count is in bytes, with each
+ segment being 28 bytes in length. */
+ segment_count /= 28;
+
+ /* Segments are stored in an array of segment pointers. */
+ segment **segments = malloc(sizeof(segment *) * segment_count);
+ for (int i = 0; i < segment_count; i++) {
+ segments[i] = malloc(sizeof(segment));
+ read_stream(&segments[i]->compressed,
+ &data_stream->data,
+ sizeof(uint32_t));
+ read_stream(&segments[i]->offset,
+ &data_stream->data,
+ sizeof(uint64_t));
+ read_stream(&segments[i]->decompressed_size,
+ &data_stream->data,
+ sizeof(uint64_t));
+ read_stream(&segments[i]->compressed_size,
+ &data_stream->data,
+ sizeof(uint64_t));
+ }
+ printf("\nSEGMENT SECTION\n---------------\n\n");
+ printf("SEGMENT_COUNT: %" PRIu64 "\n", segment_count);
+ for (int i = 0; i < segment_count; i++) {
+ printf("\SEGMENT %d\n----------\n", i);
+ printf("%s\n", segments[i]->compressed ? "COMPRESSED" : "DECOMPRESSED");
+ printf("FILE_OFFSET: %" PRIu64 "\n", segments[i]->offset);
+ printf("COMPRESSED_SIZE: %" PRIu64 "\n", segments[i]->compressed_size);
+ printf("DECOMPRESSED_SIZE: %" PRIu64 "\n", segments[i]->decompressed_size);
+ }
+ parsed->segment_count = segment_count;
+ parsed->segments = segments;
}
/* Document */
-void read_adlr_chunk(memory_stream *data_stream) {
+void read_adlr_chunk(memory_stream *data_stream, file_node *parsed) {
uint32_t key;
read_stream(&key, &data_stream->data, sizeof(uint32_t));
- printf("\nADLR SEGMENT\n");
- printf("------------\n");
- printf("KEY: %" PRIx32 "\n\n", key);
+ parsed->key = key;
}
/* Document */
-void read_time_chunk(memory_stream *data_stream) {
+void read_time_chunk(memory_stream *data_stream, file_node *parsed) {
uint64_t timestamp;
read_stream(&timestamp, &data_stream->data, sizeof(uint64_t));
printf("\nTIME SEGMENT\n");
generated by cgit v1.3 (git 2.53.0) at 2026-08-29 15:50:38 +0000