diff options
Diffstat (limited to 'archive-zip.c')
| -rw-r--r-- | archive-zip.c | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/archive-zip.c b/archive-zip.c index 2d52bb3..7d6f2a8 100644 --- a/archive-zip.c +++ b/archive-zip.c @@ -14,7 +14,7 @@ static int zip_time; /* 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; @@ -145,6 +145,11 @@ static void copy_le16_clamp(unsigned char *dest, uint64_t n, int *clamped) 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) { @@ -154,6 +159,12 @@ static int strbuf_add_le(struct strbuf *sb, size_t size, uintmax_t n) 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) @@ -254,6 +265,8 @@ static int write_zip_entry(struct archiver_args *args, 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); @@ -433,6 +446,11 @@ static int write_zip_entry(struct archiver_args *args, 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 */ @@ -444,14 +462,20 @@ static int write_zip_entry(struct archiver_args *args, 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; @@ -494,7 +518,7 @@ static void write_zip_trailer(const unsigned char *sha1) &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); |