diff options
| -rw-r--r-- | archival/config.in | 3 | ||||
| -rw-r--r-- | archival/libunarchive/get_header_tar.c | 40 |
2 files changed, 38 insertions, 5 deletions
diff --git a/archival/config.in b/archival/config.in index ac90ec0..140e4fb 100644 --- a/archival/config.in +++ b/archival/config.in @@ -18,7 +18,8 @@ bool 'tar' CONFIG_TAR if [ "$CONFIG_TAR" = "y" ] ; then bool ' Enable archive creation' CONFIG_FEATURE_TAR_CREATE bool ' Enable -X and --exclude options (exclude files)' CONFIG_FEATURE_TAR_EXCLUDE - bool ' Enable -z option' CONFIG_FEATURE_TAR_GZIP + bool ' Enable -z option' CONFIG_FEATURE_TAR_GZIP + bool ' Enable support for old tar header format' CONFIG_FEATURE_TAR_OLD_FORMAT fi if [ "$CONFIG_CPIO" = "y" -o "$CONFIG_TAR" = "y" ] ; then bool ' Enable tape drive support' CONFIG_FEATURE_UNARCHIVE_TAPE diff --git a/archival/libunarchive/get_header_tar.c b/archival/libunarchive/get_header_tar.c index be6bf2a..07b9ae3 100644 --- a/archival/libunarchive/get_header_tar.c +++ b/archival/libunarchive/get_header_tar.c @@ -60,11 +60,18 @@ file_header_t *get_header_tar(FILE *tar_stream) } archive_offset += 512; - /* Check header has valid magic, unfortunately some tar files - * have empty (0'ed) tar entries at the end, which will - * cause this to fail, so fail silently for now + /* Check header has valid magic, "ustar" is for the proper tar + * 0's are for the old tar format */ if (strncmp(tar.formated.magic, "ustar", 5) != 0) { +#ifdef CONFIG_FEATURE_TAR_OLD_FORMAT + if (strncmp(tar.formated.magic, "\0\0\0\0\0", 5) != 0) +#endif + return(NULL); + } + + /* If there is no filename its an empty header, skip it */ + if (xstrlen(tar.formated.name) == 0) { return(NULL); } @@ -85,7 +92,32 @@ file_header_t *get_header_tar(FILE *tar_stream) tar_entry = xcalloc(1, sizeof(file_header_t)); tar_entry->name = xstrdup(tar.formated.name); - parse_mode(tar.formated.mode, &tar_entry->mode); + tar_entry->mode = strtol(tar.formated.mode, NULL, 8); +#ifdef CONFIG_FEATURE_TAR_OLD_FORMAT + switch (tar.formated.typeflag) { + case 0: + tar_entry->mode |= S_IFREG; + break; + case 1: + error_msg("internal hard link not handled\n"); + break; + case 2: + tar_entry->mode |= S_IFLNK; + break; + case 3: + tar_entry->mode |= S_IFCHR; + break; + case 4: + tar_entry->mode |= S_IFBLK; + break; + case 5: + tar_entry->mode |= S_IFDIR; + break; + case 6: + tar_entry->mode |= S_IFIFO; + break; + } +#endif tar_entry->uid = strtol(tar.formated.uid, NULL, 8); tar_entry->gid = strtol(tar.formated.gid, NULL, 8); tar_entry->size = strtol(tar.formated.size, NULL, 8); |