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abuild-gzsplit: fix handling of pax headers 

fixes #9999
This commit is contained in:
Natanael Copa 2020-07-08 12:27:38 +02:00
parent 62913a287d
commit 634c81180c
1 changed files with 13 additions and 8 deletions
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21
abuild-gzsplit.c
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@ -6,13 +6,23 @@
#include <zlib.h>
static int find_section(const char *buf, size_t bufsize, const char *str) {
int len = strlen(str);
const char *p;
if (len >= bufsize) return 0;
p = strrchr(buf, '/');
if (p++ == NULL) p = buf;
return strncmp(p, str, len) == 0;
}
int main(void)
{
char obuf[8*1024], ibuf[8*1024];
z_stream zs;
int r = Z_OK, rc = 1, fd = -1;
size_t len;
size_t offset;
if (inflateInit2(&zs, 15+32) != Z_OK)
goto err;
@ -44,14 +54,9 @@ int main(void)
if (fd < 0) {
const char *fn;
if (strncmp(obuf, "PaxHeader/", 10) == 0)
offset = 10;
else
offset = 0;
if (strncmp(obuf + offset, ".SIGN.", 6) == 0)
if (find_section(obuf, len, ".SIGN."))
fn = "signatures.tar.gz";
else if (strncmp(obuf + offset, ".PKGINFO", 8) == 0)
else if (find_section(obuf, len, ".PKGINFO"))
fn = "control.tar.gz";
else if (rc == 1)
fn = "data.tar.gz", rc = 2;