diff options
| -rw-r--r-- | archival/libunarchive/get_header_tar.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/archival/libunarchive/get_header_tar.c b/archival/libunarchive/get_header_tar.c index 71e08bf..b8d7648 100644 --- a/archival/libunarchive/get_header_tar.c +++ b/archival/libunarchive/get_header_tar.c @@ -87,11 +87,13 @@ static unsigned long long getOctal(char *str, int len) { unsigned long long v; /* NB: leading spaces are allowed. Using strtoull to handle that. - * The downside is that we accept e.g. "-123" too :) + * The downside is that we accept e.g. "-123" too :( */ str[len] = '\0'; v = strtoull(str, &str, 8); - if (*str && (!ENABLE_FEATURE_TAR_OLDGNU_COMPATIBILITY || *str != ' ')) + /* std: "Each numeric field is terminated by one or more + * <space> or NUL characters". We must support ' '! */ + if (*str != '\0' && *str != ' ') bb_error_msg_and_die("corrupted octal value in tar header"); return v; } @@ -262,20 +264,20 @@ char FAST_FUNC get_header_tar(archive_handle_t *archive_handle) sum_s += ((signed char*)&tar)[i]; #endif } -#if ENABLE_FEATURE_TAR_OLDGNU_COMPATIBILITY - sum = strtoul(tar.chksum, &cp, 8); - if ((*cp && *cp != ' ') - || (sum_u != sum IF_FEATURE_TAR_OLDSUN_COMPATIBILITY(&& sum_s != sum)) - ) { - bb_error_msg_and_die("invalid tar header checksum"); - } -#else /* This field does not need special treatment (getOctal) */ + { + char *endp; /* gcc likes temp var for &endp */ + sum = strtoul(tar.chksum, &endp, 8); + if ((*endp != '\0' && *endp != ' ') + || (sum_u != sum IF_FEATURE_TAR_OLDSUN_COMPATIBILITY(&& sum_s != sum)) + ) { + bb_error_msg_and_die("invalid tar header checksum"); + } + } sum = xstrtoul(tar.chksum, 8); if (sum_u != sum IF_FEATURE_TAR_OLDSUN_COMPATIBILITY(&& sum_s != sum)) { bb_error_msg_and_die("invalid tar header checksum"); } -#endif /* 0 is reserved for high perf file, treat as normal file */ if (!tar.typeflag) tar.typeflag = '0'; |