diff options
Diffstat (limited to 'archival/libunarchive/get_header_ar.c')
| -rw-r--r-- | archival/libunarchive/get_header_ar.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/archival/libunarchive/get_header_ar.c b/archival/libunarchive/get_header_ar.c index 6638c65..4e294b2 100644 --- a/archival/libunarchive/get_header_ar.c +++ b/archival/libunarchive/get_header_ar.c @@ -9,6 +9,7 @@ char get_header_ar(archive_handle_t *archive_handle) { + int err; file_header_t *typed = archive_handle->file_header; union { char raw[60]; @@ -45,15 +46,23 @@ char get_header_ar(archive_handle_t *archive_handle) archive_handle->offset += 60; /* align the headers based on the header magic */ - if ((ar.formatted.magic[0] != '`') || (ar.formatted.magic[1] != '\n')) { + if (ar.formatted.magic[0] != '`' || ar.formatted.magic[1] != '\n') bb_error_msg_and_die("invalid ar header"); - } - typed->mode = xstrtoul(ar.formatted.mode, 8); - typed->mtime = xatou(ar.formatted.date); - typed->uid = xatou(ar.formatted.uid); - typed->gid = xatou(ar.formatted.gid); - typed->size = xatoul(ar.formatted.size); + /* FIXME: more thorough routine would be in order here */ + /* (we have something like that in tar) */ + /* but for now we are lax. This code works because */ + /* on misformatted numbers bb_strtou returns all-ones */ + typed->mode = err = bb_strtou(ar.formatted.mode, NULL, 8); + if (err == -1) bb_error_msg_and_die("invalid ar header"); + typed->mtime = err = bb_strtou(ar.formatted.date, NULL, 10); + if (err == -1) bb_error_msg_and_die("invalid ar header"); + typed->uid = err = bb_strtou(ar.formatted.uid, NULL, 10); + if (err == -1) bb_error_msg_and_die("invalid ar header"); + typed->gid = err = bb_strtou(ar.formatted.gid, NULL, 10); + if (err == -1) bb_error_msg_and_die("invalid ar header"); + typed->size = err = bb_strtou(ar.formatted.size, NULL, 10); + if (err == -1) bb_error_msg_and_die("invalid ar header"); /* long filenames have '/' as the first character */ if (ar.formatted.name[0] == '/') { |