/* We only care about the "buf" part here. */
static struct strbuf zip_dir;
-static unsigned int zip_offset;
+static uintmax_t zip_offset;
static uint64_t zip_dir_entries;
static unsigned int max_creator_version;
copy_le16(dest, clamp_max(n, 0xffff, clamped));
}
+static void copy_le32_clamp(unsigned char *dest, uint64_t n, int *clamped)
+{
+ copy_le32(dest, clamp_max(n, 0xffffffff, clamped));
+}
+
static int strbuf_add_le(struct strbuf *sb, size_t size, uintmax_t n)
{
while (size-- > 0) {
return -!!n;
}
+static uint32_t clamp32(uintmax_t n)
+{
+ const uintmax_t max = 0xffffffff;
+ return (n < max) ? n : max;
+}
+
static void *zlib_deflate_raw(void *data, unsigned long size,
int compression_level,
unsigned long *compressed_size)
int is_binary = -1;
const char *path_without_prefix = path + args->baselen;
unsigned int creator_version = 0;
+ size_t zip_dir_extra_size = ZIP_EXTRA_MTIME_SIZE;
+ size_t zip64_dir_extra_payload_size = 0;
crc = crc32(0, NULL, 0);
free(deflated);
free(buffer);
+ if (offset > 0xffffffff) {
+ zip64_dir_extra_payload_size += 8;
+ zip_dir_extra_size += 2 + 2 + zip64_dir_extra_payload_size;
+ }
+
strbuf_add_le(&zip_dir, 4, 0x02014b50); /* magic */
strbuf_add_le(&zip_dir, 2, creator_version);
strbuf_add_le(&zip_dir, 2, 10); /* version */
strbuf_add_le(&zip_dir, 4, compressed_size);
strbuf_add_le(&zip_dir, 4, size);
strbuf_add_le(&zip_dir, 2, pathlen);
- strbuf_add_le(&zip_dir, 2, ZIP_EXTRA_MTIME_SIZE);
+ strbuf_add_le(&zip_dir, 2, zip_dir_extra_size);
strbuf_add_le(&zip_dir, 2, 0); /* comment length */
strbuf_add_le(&zip_dir, 2, 0); /* disk */
strbuf_add_le(&zip_dir, 2, !is_binary);
strbuf_add_le(&zip_dir, 4, attr2);
- strbuf_add_le(&zip_dir, 4, offset);
+ strbuf_add_le(&zip_dir, 4, clamp32(offset));
strbuf_add(&zip_dir, path, pathlen);
strbuf_add(&zip_dir, &extra, ZIP_EXTRA_MTIME_SIZE);
+ if (zip64_dir_extra_payload_size) {
+ strbuf_add_le(&zip_dir, 2, 0x0001); /* magic */
+ strbuf_add_le(&zip_dir, 2, zip64_dir_extra_payload_size);
+ if (offset >= 0xffffffff)
+ strbuf_add_le(&zip_dir, 8, offset);
+ }
zip_dir_entries++;
return 0;
&clamped);
copy_le16_clamp(trailer.entries, zip_dir_entries, &clamped);
copy_le32(trailer.size, zip_dir.len);
- copy_le32(trailer.offset, zip_offset);
+ copy_le32_clamp(trailer.offset, zip_offset, &clamped);
copy_le16(trailer.comment_length, sha1 ? GIT_SHA1_HEXSZ : 0);
write_or_die(1, zip_dir.buf, zip_dir.len);