b773f715d
Denys Vlasenko
2009-07-08
Subject
tar: handle 256-base encoding in mtime
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archival/libunarchive/get_header_tar.c+7 -3
| @@ -301,9 +301,13 @@ char FAST_FUNC get_header_tar(archive_handle_t *archive_handle) | |
| file_header->uname = tar.uname[0] ? xstrndup(tar.uname, sizeof(tar.uname)) : NULL; | |
| file_header->gname = tar.gname[0] ? xstrndup(tar.gname, sizeof(tar.gname)) : NULL; | |
| #endif | |
| - | file_header->mtime = GET_OCTAL(tar.mtime); |
| - | /* Size field: handle GNU tar's "base256 encoding" */ |
| - | file_header->size = (*tar.size & 0xc0) == 0x80 /* positive base256? */ |
| + | /* mtime: rudimentally handle GNU tar's "base256 encoding" |
| + | * People report tarballs with NEGATIVE unix times encoded that way */ |
| + | file_header->mtime = (tar.mtime[0] & 0x80) /* base256? */ |
| + | ? 0 /* bogus */ |
| + | : GET_OCTAL(tar.mtime); |
| + | /* size: handle GNU tar's "base256 encoding" */ |
| + | file_header->size = (tar.size[0] & 0xc0) == 0x80 /* positive base256? */ |
| ? getBase256_len12(tar.size) | |
| : GET_OCTAL(tar.size); | |
| file_header->gid = GET_OCTAL(tar.gid); | |