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Diffstat (limited to 'archive-zip.c')
-rw-r--r--archive-zip.c130
1 files changed, 120 insertions, 10 deletions
diff --git a/archive-zip.c b/archive-zip.c
index 4bde019bce..9db47357b0 100644
--- a/archive-zip.c
+++ b/archive-zip.c
@@ -5,6 +5,8 @@
#include "archive.h"
#include "streaming.h"
#include "utf8.h"
+#include "userdiff.h"
+#include "xdiff-interface.h"
static int zip_date;
static int zip_time;
@@ -14,7 +16,9 @@ static unsigned int zip_dir_size;
static unsigned int zip_offset;
static unsigned int zip_dir_offset;
-static unsigned int zip_dir_entries;
+static uint64_t zip_dir_entries;
+
+static unsigned int max_creator_version;
#define ZIP_DIRECTORY_MIN_SIZE (1024 * 1024)
#define ZIP_STREAM (1 << 3)
@@ -84,6 +88,28 @@ struct zip_extra_mtime {
unsigned char _end[1];
};
+struct zip64_dir_trailer {
+ unsigned char magic[4];
+ unsigned char record_size[8];
+ unsigned char creator_version[2];
+ unsigned char version[2];
+ unsigned char disk[4];
+ unsigned char directory_start_disk[4];
+ unsigned char entries_on_this_disk[8];
+ unsigned char entries[8];
+ unsigned char size[8];
+ unsigned char offset[8];
+ unsigned char _end[1];
+};
+
+struct zip64_dir_trailer_locator {
+ unsigned char magic[4];
+ unsigned char disk[4];
+ unsigned char offset[8];
+ unsigned char number_of_disks[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
@@ -96,6 +122,12 @@ struct zip_extra_mtime {
#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_DIR_TRAILER_SIZE offsetof(struct zip64_dir_trailer, _end)
+#define ZIP64_DIR_TRAILER_RECORD_SIZE \
+ (ZIP64_DIR_TRAILER_SIZE - \
+ offsetof(struct zip64_dir_trailer, creator_version))
+#define ZIP64_DIR_TRAILER_LOCATOR_SIZE \
+ offsetof(struct zip64_dir_trailer_locator, _end)
static void copy_le16(unsigned char *dest, unsigned int n)
{
@@ -111,6 +143,31 @@ static void copy_le32(unsigned char *dest, unsigned int n)
dest[3] = 0xff & (n >> 030);
}
+static void copy_le64(unsigned char *dest, uint64_t n)
+{
+ dest[0] = 0xff & n;
+ dest[1] = 0xff & (n >> 010);
+ dest[2] = 0xff & (n >> 020);
+ dest[3] = 0xff & (n >> 030);
+ dest[4] = 0xff & (n >> 040);
+ dest[5] = 0xff & (n >> 050);
+ dest[6] = 0xff & (n >> 060);
+ dest[7] = 0xff & (n >> 070);
+}
+
+static uint64_t clamp_max(uint64_t n, uint64_t max, int *clamped)
+{
+ if (n <= max)
+ return n;
+ *clamped = 1;
+ return max;
+}
+
+static void copy_le16_clamp(unsigned char *dest, uint64_t n, int *clamped)
+{
+ copy_le16(dest, clamp_max(n, 0xffff, clamped));
+}
+
static void *zlib_deflate_raw(void *data, unsigned long size,
int compression_level,
unsigned long *compressed_size)
@@ -120,7 +177,6 @@ static void *zlib_deflate_raw(void *data, unsigned long size,
void *buffer;
int result;
- memset(&stream, 0, sizeof(stream));
git_deflate_init_raw(&stream, compression_level);
maxsize = git_deflate_bound(&stream, size);
buffer = xmalloc(maxsize);
@@ -189,6 +245,16 @@ static int has_only_ascii(const char *s)
}
}
+static int entry_is_binary(const char *path, const void *buffer, size_t size)
+{
+ struct userdiff_driver *driver = userdiff_find_by_path(path);
+ if (!driver)
+ driver = userdiff_find_by_name("default");
+ if (driver->binary != -1)
+ return driver->binary;
+ return buffer_is_binary(buffer, size);
+}
+
#define STREAM_BUFFER_SIZE (1024 * 16)
static int write_zip_entry(struct archiver_args *args,
@@ -210,6 +276,9 @@ static int write_zip_entry(struct archiver_args *args,
struct git_istream *stream = NULL;
unsigned long flags = 0;
unsigned long size;
+ int is_binary = -1;
+ const char *path_without_prefix = path + args->baselen;
+ unsigned int creator_version = 0;
crc = crc32(0, NULL, 0);
@@ -238,6 +307,8 @@ static int write_zip_entry(struct archiver_args *args,
method = 0;
attr2 = S_ISLNK(mode) ? ((mode | 0777) << 16) :
(mode & 0111) ? ((mode) << 16) : 0;
+ if (S_ISLNK(mode) || (mode & 0111))
+ creator_version = 0x0317;
if (S_ISREG(mode) && args->compression_level != 0 && size > 0)
method = 8;
@@ -256,6 +327,8 @@ static int write_zip_entry(struct archiver_args *args,
return error("cannot read %s",
sha1_to_hex(sha1));
crc = crc32(crc, buffer, size);
+ is_binary = entry_is_binary(path_without_prefix,
+ buffer, size);
out = buffer;
}
compressed_size = (method == 0) ? size : 0;
@@ -264,6 +337,9 @@ static int write_zip_entry(struct archiver_args *args,
sha1_to_hex(sha1));
}
+ if (creator_version > max_creator_version)
+ max_creator_version = creator_version;
+
if (buffer && method == 8) {
out = deflated = zlib_deflate_raw(buffer, size,
args->compression_level,
@@ -288,8 +364,7 @@ static int write_zip_entry(struct archiver_args *args,
}
copy_le32(dirent.magic, 0x02014b50);
- copy_le16(dirent.creator_version,
- S_ISLNK(mode) || (S_ISREG(mode) && (mode & 0111)) ? 0x0317 : 0);
+ copy_le16(dirent.creator_version, creator_version);
copy_le16(dirent.version, 10);
copy_le16(dirent.flags, flags);
copy_le16(dirent.compression_method, method);
@@ -300,7 +375,6 @@ static int write_zip_entry(struct archiver_args *args,
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);
copy_le32(dirent.attr2, attr2);
copy_le32(dirent.offset, zip_offset);
@@ -328,6 +402,9 @@ static int write_zip_entry(struct archiver_args *args,
if (readlen <= 0)
break;
crc = crc32(crc, buf, readlen);
+ if (is_binary == -1)
+ is_binary = entry_is_binary(path_without_prefix,
+ buf, readlen);
write_or_die(1, buf, readlen);
}
close_istream(stream);
@@ -349,7 +426,6 @@ static int write_zip_entry(struct archiver_args *args,
size_t out_len;
unsigned char compressed[STREAM_BUFFER_SIZE * 2];
- memset(&zstream, 0, sizeof(zstream));
git_deflate_init_raw(&zstream, args->compression_level);
compressed_size = 0;
@@ -361,6 +437,9 @@ static int write_zip_entry(struct archiver_args *args,
if (readlen <= 0)
break;
crc = crc32(crc, buf, readlen);
+ if (is_binary == -1)
+ is_binary = entry_is_binary(path_without_prefix,
+ buf, readlen);
zstream.next_in = buf;
zstream.avail_in = readlen;
@@ -405,6 +484,8 @@ static int write_zip_entry(struct archiver_args *args,
free(deflated);
free(buffer);
+ copy_le16(dirent.attr1, !is_binary);
+
memcpy(zip_dir + zip_dir_offset, &dirent, ZIP_DIR_HEADER_SIZE);
zip_dir_offset += ZIP_DIR_HEADER_SIZE;
memcpy(zip_dir + zip_dir_offset, path, pathlen);
@@ -416,23 +497,52 @@ static int write_zip_entry(struct archiver_args *args,
return 0;
}
+static void write_zip64_trailer(void)
+{
+ struct zip64_dir_trailer trailer64;
+ struct zip64_dir_trailer_locator locator64;
+
+ copy_le32(trailer64.magic, 0x06064b50);
+ copy_le64(trailer64.record_size, ZIP64_DIR_TRAILER_RECORD_SIZE);
+ copy_le16(trailer64.creator_version, max_creator_version);
+ copy_le16(trailer64.version, 45);
+ copy_le32(trailer64.disk, 0);
+ copy_le32(trailer64.directory_start_disk, 0);
+ copy_le64(trailer64.entries_on_this_disk, zip_dir_entries);
+ copy_le64(trailer64.entries, zip_dir_entries);
+ copy_le64(trailer64.size, zip_dir_offset);
+ copy_le64(trailer64.offset, zip_offset);
+
+ copy_le32(locator64.magic, 0x07064b50);
+ copy_le32(locator64.disk, 0);
+ copy_le64(locator64.offset, zip_offset + zip_dir_offset);
+ copy_le32(locator64.number_of_disks, 1);
+
+ write_or_die(1, &trailer64, ZIP64_DIR_TRAILER_SIZE);
+ write_or_die(1, &locator64, ZIP64_DIR_TRAILER_LOCATOR_SIZE);
+}
+
static void write_zip_trailer(const unsigned char *sha1)
{
struct zip_dir_trailer trailer;
+ int clamped = 0;
copy_le32(trailer.magic, 0x06054b50);
copy_le16(trailer.disk, 0);
copy_le16(trailer.directory_start_disk, 0);
- copy_le16(trailer.entries_on_this_disk, zip_dir_entries);
- copy_le16(trailer.entries, zip_dir_entries);
+ copy_le16_clamp(trailer.entries_on_this_disk, zip_dir_entries,
+ &clamped);
+ copy_le16_clamp(trailer.entries, zip_dir_entries, &clamped);
copy_le32(trailer.size, zip_dir_offset);
copy_le32(trailer.offset, zip_offset);
- copy_le16(trailer.comment_length, sha1 ? 40 : 0);
+ copy_le16(trailer.comment_length, sha1 ? GIT_SHA1_HEXSZ : 0);
write_or_die(1, zip_dir, zip_dir_offset);
+ if (clamped)
+ write_zip64_trailer();
write_or_die(1, &trailer, ZIP_DIR_TRAILER_SIZE);
if (sha1)
- write_or_die(1, sha1_to_hex(sha1), 40);
+ write_or_die(1, sha1_to_hex(sha1), GIT_SHA1_HEXSZ);
}
static void dos_time(time_t *time, int *dos_date, int *dos_time)
generated by cgit v1.2.3 (git 2.46.0) at 2025-11-04 02:53:28 +0000