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tar: improve OLDGNU compat, make old SUN compat configurable

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This commit is contained in:
Denis Vlasenko
2007-06-21 12:41:59 +00:00
parent 9a33780152
commit a80b4a0fa7
3 changed files with 37 additions and 8 deletions
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3
archival/libunarchive/get_header_cpio.c
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@@ -16,8 +16,9 @@ typedef struct hardlinks_s {
char get_header_cpio(archive_handle_t *archive_handle)
{
static hardlinks_t *saved_hardlinks = NULL;
static unsigned short pending_hardlinks = 0;
static unsigned pending_hardlinks = 0;
static int inode;
file_header_t *file_header = archive_handle->file_header;
char cpio_header[110];
int namesize;

33
archival/libunarchive/get_header_tar.c
View File

@@ -36,7 +36,7 @@ static unsigned long long getOctal(char *str, int len)
*/
str[len] = '\0';
v = strtoull(str, &str, 8);
if (*str)
if (*str && (!ENABLE_FEATURE_TAR_OLDGNU_COMPATIBILITY || *str != ' '))
bb_error_msg_and_die("corrupted octal value in tar header");
return v;
}
@@ -45,7 +45,7 @@ static unsigned long long getOctal(char *str, int len)
void BUG_tar_header_size(void);
char get_header_tar(archive_handle_t *archive_handle)
{
static int end;
static smallint end;
file_header_t *file_header = archive_handle->file_header;
struct {
@@ -69,7 +69,10 @@ char get_header_tar(archive_handle_t *archive_handle)
char padding[12]; /* 500-512 */
} tar;
char *cp;
int i, sum_u, sum_s, sum;
int i, sum_u, sum;
#if ENABLE_FEATURE_TAR_OLDSUN_COMPATIBILITY
int sum_s;
#endif
int parse_names;
if (sizeof(tar) != 512)
@@ -115,20 +118,36 @@ char get_header_tar(archive_handle_t *archive_handle)
* POSIX says that checksum is done on unsigned bytes, but
* Sun and HP-UX gets it wrong... more details in
* GNU tar source. */
sum_s = sum_u = ' ' * sizeof(tar.chksum);
#if ENABLE_FEATURE_TAR_OLDSUN_COMPATIBILITY
sum_s = ' ' * sizeof(tar.chksum);
#endif
sum_u = ' ' * sizeof(tar.chksum);
for (i = 0; i < 148 ; i++) {
sum_u += ((unsigned char*)&tar)[i];
#if ENABLE_FEATURE_TAR_OLDSUN_COMPATIBILITY
sum_s += ((signed char*)&tar)[i];
#endif
}
for (i = 156; i < 512 ; i++) {
sum_u += ((unsigned char*)&tar)[i];
#if ENABLE_FEATURE_TAR_OLDSUN_COMPATIBILITY
sum_s += ((signed char*)&tar)[i];
#endif
}
/* This field does not need special treatment (getOctal) */
sum = xstrtoul(tar.chksum, 8);
if (sum_u != sum && sum_s != sum) {
#if ENABLE_FEATURE_TAR_OLDGNU_COMPATIBILITY
sum = strtoul(tar.chksum, &cp, 8);
if ((*cp && *cp != ' ')
|| (sum_u != sum USE_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) */
sum = xstrtoul(tar.chksum, 8);
if (sum_u != sum USE_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';