int32_t xar_hash_fromheap_out(xar_t x, xar_file_t f, xar_prop_t p, void *in, size_t inlen, void **context) {
const char *opt;
xar_prop_t tmpp;
opt = NULL;
tmpp = xar_prop_pget(p, "extracted-checksum");
if( tmpp ) {
opt = xar_attr_pget(f, tmpp, "style");
} else {
// The xar-1.7 release in OS X Yosemite accidentally wrote <unarchived-checksum>
// instead of <extracted-checksum>. Since archives like this are now in the wild,
// we check for both.
tmpp = xar_prop_pget(p, "unarchived-checksum");
if( tmpp ) {
opt = xar_attr_pget(f, tmpp, "style");
}
}
// If there's an <archived-checksum> and no <extracted-checksum> (or
// <unarchived-checksum>), the archive is malformed.
if ( !opt && xar_prop_pget(p, "archived-checksum") ) {
xar_err_new(x);
xar_err_set_string(x, "No extracted-checksum");
xar_err_callback(x, XAR_SEVERITY_FATAL, XAR_ERR_ARCHIVE_EXTRACTION);
return -1;
}
if( !opt )
opt = xar_opt_get(x, XAR_OPT_FILECKSUM);
if( !opt || (0 == strcmp(opt, XAR_OPT_VAL_NONE) ) )
return 0;
if(!CONTEXT(context)) {
*context = calloc(1, sizeof(struct _hash_context));
if( ! *context )
return -1;
}
if( ! CONTEXT(context)->unarchived ) {
CONTEXT(context)->unarchived = xar_hash_new(opt, NULL);
if( ! CONTEXT(context)->unarchived ) {
free(*context);
*context = NULL;
return -1;
}
}
if( inlen == 0 )
return 0;
CONTEXT(context)->count += inlen;
xar_hash_update(CONTEXT(context)->unarchived, in, inlen);
return 0;
}
int32_t xar_hash_toheap_out(xar_t x, xar_file_t f, xar_prop_t p, void *in, size_t inlen, void **context) {
const char *opt;
xar_prop_t tmpp;
opt = NULL;
tmpp = xar_prop_pget(p, "archived-checksum");
if( tmpp )
opt = xar_attr_pget(f, tmpp, "style");
if( !opt )
opt = xar_opt_get(x, XAR_OPT_FILECKSUM);
if( !opt || (0 == strcmp(opt, XAR_OPT_VAL_NONE) ) )
return 0;
if( ! CONTEXT(context) ) {
*context = calloc(1, sizeof(struct _hash_context));
if( ! *context )
return -1;
}
if( ! CONTEXT(context)->archived ) {
CONTEXT(context)->archived = xar_hash_new(opt, NULL);
if( ! CONTEXT(context)->archived ) {
free(*context);
*context = NULL;
return -1;
}
}
if( inlen == 0 )
return 0;
CONTEXT(context)->count += inlen;
xar_hash_update(CONTEXT(context)->archived, in, inlen);
return 0;
}
