#include "cache.h"
#include "archive.h"
#include "streaming.h"
+#include "utf8.h"
static int zip_date;
static int zip_time;
static unsigned int zip_dir_entries;
#define ZIP_DIRECTORY_MIN_SIZE (1024 * 1024)
-#define ZIP_STREAM (8)
+#define ZIP_STREAM (1 << 3)
+#define ZIP_UTF8 (1 << 11)
struct zip_local_header {
unsigned char magic[4];
unsigned char _end[1];
};
+struct zip_extra_mtime {
+ unsigned char magic[2];
+ unsigned char extra_size[2];
+ unsigned char flags[1];
+ unsigned char mtime[4];
+ unsigned char _end[1];
+};
+
/*
* On ARM, padding is added at the end of the struct, so a simple
* sizeof(struct ...) reports two bytes more than the payload size
#define ZIP_DATA_DESC_SIZE offsetof(struct zip_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))
static void copy_le16(unsigned char *dest, unsigned int n)
{
copy_le32(header->size, size);
}
+static int has_only_ascii(const char *s)
+{
+ for (;;) {
+ int c = *s++;
+ if (c == '\0')
+ return 1;
+ if (!isascii(c))
+ return 0;
+ }
+}
+
#define STREAM_BUFFER_SIZE (1024 * 16)
static int write_zip_entry(struct archiver_args *args,
{
struct zip_local_header header;
struct zip_dir_header dirent;
+ struct zip_extra_mtime extra;
unsigned long attr2;
unsigned long compressed_size;
unsigned long crc;
crc = crc32(0, NULL, 0);
+ if (!has_only_ascii(path)) {
+ if (is_utf8(path))
+ flags |= ZIP_UTF8;
+ else
+ warning("Path is not valid UTF-8: %s", path);
+ }
+
if (pathlen > 0xffff) {
return error("path too long (%d chars, SHA1: %s): %s",
(int)pathlen, sha1_to_hex(sha1), path);
compressed_size = size;
if (S_ISREG(mode) && type == OBJ_BLOB && !args->convert &&
- size > big_file_threshold && method == 0) {
+ size > big_file_threshold) {
stream = open_istream(sha1, &type, &size, NULL);
if (!stream)
return error("cannot stream blob %s",
}
}
+ copy_le16(extra.magic, 0x5455);
+ copy_le16(extra.extra_size, ZIP_EXTRA_MTIME_PAYLOAD_SIZE);
+ extra.flags[0] = 1; /* just mtime */
+ copy_le32(extra.mtime, args->time);
+
/* make sure we have enough free space in the dictionary */
- direntsize = ZIP_DIR_HEADER_SIZE + pathlen;
+ direntsize = ZIP_DIR_HEADER_SIZE + pathlen + ZIP_EXTRA_MTIME_SIZE;
while (zip_dir_size < zip_dir_offset + direntsize) {
zip_dir_size += ZIP_DIRECTORY_MIN_SIZE;
zip_dir = xrealloc(zip_dir, zip_dir_size);
copy_le16(dirent.mdate, zip_date);
set_zip_dir_data_desc(&dirent, size, compressed_size, crc);
copy_le16(dirent.filename_length, pathlen);
- copy_le16(dirent.extra_length, 0);
+ copy_le16(dirent.extra_length, ZIP_EXTRA_MTIME_SIZE);
copy_le16(dirent.comment_length, 0);
copy_le16(dirent.disk, 0);
copy_le16(dirent.attr1, 0);
else
set_zip_header_data_desc(&header, size, compressed_size, crc);
copy_le16(header.filename_length, pathlen);
- copy_le16(header.extra_length, 0);
+ copy_le16(header.extra_length, ZIP_EXTRA_MTIME_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 (stream && method == 0) {
unsigned char buf[STREAM_BUFFER_SIZE];
ssize_t readlen;
write_zip_data_desc(size, compressed_size, crc);
zip_offset += ZIP_DATA_DESC_SIZE;
+ set_zip_dir_data_desc(&dirent, size, compressed_size, crc);
+ } else if (stream && method == 8) {
+ unsigned char buf[STREAM_BUFFER_SIZE];
+ ssize_t readlen;
+ git_zstream zstream;
+ int result;
+ size_t out_len;
+ unsigned char compressed[STREAM_BUFFER_SIZE * 2];
+
+ memset(&zstream, 0, sizeof(zstream));
+ git_deflate_init(&zstream, args->compression_level);
+
+ compressed_size = 0;
+ zstream.next_out = compressed;
+ zstream.avail_out = sizeof(compressed);
+
+ for (;;) {
+ readlen = read_istream(stream, buf, sizeof(buf));
+ if (readlen <= 0)
+ break;
+ crc = crc32(crc, buf, readlen);
+
+ zstream.next_in = buf;
+ zstream.avail_in = readlen;
+ result = git_deflate(&zstream, 0);
+ if (result != Z_OK)
+ die("deflate error (%d)", result);
+ out = compressed;
+ if (!compressed_size)
+ out += 2;
+ out_len = zstream.next_out - out;
+
+ if (out_len > 0) {
+ write_or_die(1, out, out_len);
+ compressed_size += out_len;
+ zstream.next_out = compressed;
+ zstream.avail_out = sizeof(compressed);
+ }
+
+ }
+ close_istream(stream);
+ if (readlen)
+ return readlen;
+
+ zstream.next_in = buf;
+ zstream.avail_in = 0;
+ result = git_deflate(&zstream, Z_FINISH);
+ if (result != Z_STREAM_END)
+ die("deflate error (%d)", result);
+
+ git_deflate_end(&zstream);
+ out = compressed;
+ if (!compressed_size)
+ out += 2;
+ out_len = zstream.next_out - out - 4;
+ write_or_die(1, out, out_len);
+ compressed_size += out_len;
+ zip_offset += compressed_size;
+
+ write_zip_data_desc(size, compressed_size, crc);
+ zip_offset += ZIP_DATA_DESC_SIZE;
+
set_zip_dir_data_desc(&dirent, size, compressed_size, crc);
} else if (compressed_size > 0) {
write_or_die(1, out, compressed_size);
zip_dir_offset += ZIP_DIR_HEADER_SIZE;
memcpy(zip_dir + zip_dir_offset, path, pathlen);
zip_dir_offset += pathlen;
+ memcpy(zip_dir + zip_dir_offset, &extra, ZIP_EXTRA_MTIME_SIZE);
+ zip_dir_offset += ZIP_EXTRA_MTIME_SIZE;
zip_dir_entries++;
return 0;