/* 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;
unsigned char _end[1];
};
+struct zip64_data_desc {
+ unsigned char magic[4];
+ unsigned char crc32[4];
+ unsigned char compressed_size[8];
+ unsigned char size[8];
+ unsigned char _end[1];
+};
+
struct zip_dir_trailer {
unsigned char magic[4];
unsigned char disk[2];
unsigned char _end[1];
};
+struct zip64_extra {
+ unsigned char magic[2];
+ unsigned char extra_size[2];
+ unsigned char size[8];
+ unsigned char compressed_size[8];
+ unsigned char _end[1];
+};
+
struct zip64_dir_trailer {
unsigned char magic[4];
unsigned char record_size[8];
*/
#define ZIP_LOCAL_HEADER_SIZE offsetof(struct zip_local_header, _end)
#define ZIP_DATA_DESC_SIZE offsetof(struct zip_data_desc, _end)
+#define ZIP64_DATA_DESC_SIZE offsetof(struct zip64_data_desc, _end)
#define ZIP_DIR_HEADER_SIZE offsetof(struct zip_dir_header, _end)
#define ZIP_DIR_TRAILER_SIZE offsetof(struct zip_dir_trailer, _end)
#define ZIP_EXTRA_MTIME_SIZE offsetof(struct zip_extra_mtime, _end)
#define ZIP_EXTRA_MTIME_PAYLOAD_SIZE \
(ZIP_EXTRA_MTIME_SIZE - offsetof(struct zip_extra_mtime, flags))
+#define ZIP64_EXTRA_SIZE offsetof(struct zip64_extra, _end)
+#define ZIP64_EXTRA_PAYLOAD_SIZE \
+ (ZIP64_EXTRA_SIZE - offsetof(struct zip64_extra, size))
#define ZIP64_DIR_TRAILER_SIZE offsetof(struct zip64_dir_trailer, _end)
#define ZIP64_DIR_TRAILER_RECORD_SIZE \
(ZIP64_DIR_TRAILER_SIZE - \
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)
unsigned long compressed_size,
unsigned long crc)
{
- struct zip_data_desc trailer;
-
- copy_le32(trailer.magic, 0x08074b50);
- copy_le32(trailer.crc32, crc);
- copy_le32(trailer.compressed_size, compressed_size);
- copy_le32(trailer.size, size);
- write_or_die(1, &trailer, ZIP_DATA_DESC_SIZE);
+ if (size >= 0xffffffff || compressed_size >= 0xffffffff) {
+ struct zip64_data_desc trailer;
+ copy_le32(trailer.magic, 0x08074b50);
+ copy_le32(trailer.crc32, crc);
+ copy_le64(trailer.compressed_size, compressed_size);
+ copy_le64(trailer.size, size);
+ write_or_die(1, &trailer, ZIP64_DATA_DESC_SIZE);
+ zip_offset += ZIP64_DATA_DESC_SIZE;
+ } else {
+ struct zip_data_desc trailer;
+ copy_le32(trailer.magic, 0x08074b50);
+ copy_le32(trailer.crc32, crc);
+ copy_le32(trailer.compressed_size, compressed_size);
+ copy_le32(trailer.size, size);
+ write_or_die(1, &trailer, ZIP_DATA_DESC_SIZE);
+ zip_offset += ZIP_DATA_DESC_SIZE;
+ }
}
static void set_zip_header_data_desc(struct zip_local_header *header,
struct zip_local_header header;
uintmax_t offset = zip_offset;
struct zip_extra_mtime extra;
+ struct zip64_extra extra64;
+ size_t header_extra_size = ZIP_EXTRA_MTIME_SIZE;
+ int need_zip64_extra = 0;
unsigned long attr2;
unsigned long compressed_size;
unsigned long crc;
int is_binary = -1;
const char *path_without_prefix = path + args->baselen;
unsigned int creator_version = 0;
+ unsigned int version_needed = 10;
+ size_t zip_dir_extra_size = ZIP_EXTRA_MTIME_SIZE;
+ size_t zip64_dir_extra_payload_size = 0;
crc = crc32(0, NULL, 0);
extra.flags[0] = 1; /* just mtime */
copy_le32(extra.mtime, args->time);
+ if (size > 0xffffffff || compressed_size > 0xffffffff)
+ need_zip64_extra = 1;
+ if (stream && size > 0x7fffffff)
+ need_zip64_extra = 1;
+
+ if (need_zip64_extra)
+ version_needed = 45;
+
copy_le32(header.magic, 0x04034b50);
- copy_le16(header.version, 10);
+ copy_le16(header.version, version_needed);
copy_le16(header.flags, flags);
copy_le16(header.compression_method, method);
copy_le16(header.mtime, zip_time);
copy_le16(header.mdate, zip_date);
- set_zip_header_data_desc(&header, size, compressed_size, crc);
+ if (need_zip64_extra) {
+ set_zip_header_data_desc(&header, 0xffffffff, 0xffffffff, crc);
+ header_extra_size += ZIP64_EXTRA_SIZE;
+ } else {
+ set_zip_header_data_desc(&header, size, compressed_size, crc);
+ }
copy_le16(header.filename_length, pathlen);
- copy_le16(header.extra_length, ZIP_EXTRA_MTIME_SIZE);
+ copy_le16(header.extra_length, header_extra_size);
write_or_die(1, &header, ZIP_LOCAL_HEADER_SIZE);
zip_offset += ZIP_LOCAL_HEADER_SIZE;
write_or_die(1, path, pathlen);
zip_offset += pathlen;
write_or_die(1, &extra, ZIP_EXTRA_MTIME_SIZE);
zip_offset += ZIP_EXTRA_MTIME_SIZE;
+ if (need_zip64_extra) {
+ copy_le16(extra64.magic, 0x0001);
+ copy_le16(extra64.extra_size, ZIP64_EXTRA_PAYLOAD_SIZE);
+ copy_le64(extra64.size, size);
+ copy_le64(extra64.compressed_size, compressed_size);
+ write_or_die(1, &extra64, ZIP64_EXTRA_SIZE);
+ zip_offset += ZIP64_EXTRA_SIZE;
+ }
+
if (stream && method == 0) {
unsigned char buf[STREAM_BUFFER_SIZE];
ssize_t readlen;
zip_offset += compressed_size;
write_zip_data_desc(size, compressed_size, crc);
- zip_offset += ZIP_DATA_DESC_SIZE;
} else if (stream && method == 8) {
unsigned char buf[STREAM_BUFFER_SIZE];
ssize_t readlen;
zip_offset += compressed_size;
write_zip_data_desc(size, compressed_size, crc);
- zip_offset += ZIP_DATA_DESC_SIZE;
} else if (compressed_size > 0) {
write_or_die(1, out, compressed_size);
zip_offset += compressed_size;
free(deflated);
free(buffer);
+ if (compressed_size > 0xffffffff || size > 0xffffffff ||
+ offset > 0xffffffff) {
+ if (compressed_size >= 0xffffffff)
+ zip64_dir_extra_payload_size += 8;
+ if (size >= 0xffffffff)
+ zip64_dir_extra_payload_size += 8;
+ 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, 2, version_needed);
strbuf_add_le(&zip_dir, 2, flags);
strbuf_add_le(&zip_dir, 2, method);
strbuf_add_le(&zip_dir, 2, zip_time);
strbuf_add_le(&zip_dir, 2, zip_date);
strbuf_add_le(&zip_dir, 4, crc);
- strbuf_add_le(&zip_dir, 4, compressed_size);
- strbuf_add_le(&zip_dir, 4, size);
+ strbuf_add_le(&zip_dir, 4, clamp32(compressed_size));
+ strbuf_add_le(&zip_dir, 4, clamp32(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 (size >= 0xffffffff)
+ strbuf_add_le(&zip_dir, 8, size);
+ if (compressed_size >= 0xffffffff)
+ strbuf_add_le(&zip_dir, 8, compressed_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);
write_or_die(1, sha1_to_hex(sha1), GIT_SHA1_HEXSZ);
}
-static void dos_time(time_t *time, int *dos_date, int *dos_time)
+static void dos_time(timestamp_t *timestamp, int *dos_date, int *dos_time)
{
- struct tm *t = localtime(time);
+ time_t time;
+ struct tm *t;
+
+ if (date_overflows(*timestamp))
+ die("timestamp too large for this system: %"PRItime,
+ *timestamp);
+ time = (time_t)*timestamp;
+ t = localtime(&time);
+ *timestamp = time;
*dos_date = t->tm_mday + (t->tm_mon + 1) * 32 +
(t->tm_year + 1900 - 1980) * 512;