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Diffstat (limited to 'archive-zip.c')
-rw-r--r--archive-zip.c49
1 files changed, 45 insertions, 4 deletions
diff --git a/archive-zip.c b/archive-zip.c
index f5af81f904..55f66b4060 100644
--- a/archive-zip.c
+++ b/archive-zip.c
@@ -4,6 +4,7 @@
#include "cache.h"
#include "archive.h"
#include "streaming.h"
+#include "utf8.h"
static int zip_date;
static int zip_time;
@@ -16,7 +17,8 @@ static unsigned int zip_dir_offset;
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];
@@ -74,6 +76,14 @@ struct zip_dir_trailer {
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
@@ -83,6 +93,9 @@ struct zip_dir_trailer {
#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)
{
@@ -164,6 +177,17 @@ static void set_zip_header_data_desc(struct zip_local_header *header,
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,
@@ -173,6 +197,7 @@ 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;
@@ -187,6 +212,13 @@ static int write_zip_entry(struct archiver_args *args,
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);
@@ -246,8 +278,13 @@ static int write_zip_entry(struct archiver_args *args,
}
}
+ 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);
@@ -263,7 +300,7 @@ static int write_zip_entry(struct archiver_args *args,
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);
@@ -281,11 +318,13 @@ static int write_zip_entry(struct archiver_args *args,
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;
@@ -382,6 +421,8 @@ static int write_zip_entry(struct archiver_args *args,
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;