/*
* Lock the keyring with the given handle, or unlock if YES is false.
* We ignore the handle and lock all registered files.
*/
int
keyring_lock (KEYRING_HANDLE hd, int yes)
{
KR_NAME kr;
int rc = 0;
(void)hd;
if (yes) {
/* first make sure the lock handles are created */
for (kr=kr_names; kr; kr = kr->next) {
if (!keyring_is_writable(kr))
continue;
if (!kr->lockhd) {
kr->lockhd = create_dotlock( kr->fname );
if (!kr->lockhd) {
log_info ("can't allocate lock for `%s'\n", kr->fname );
rc = G10ERR_GENERAL;
}
}
}
if (rc)
return rc;
/* and now set the locks */
for (kr=kr_names; kr; kr = kr->next) {
if (!keyring_is_writable(kr))
continue;
if (kr->is_locked)
;
else if (make_dotlock (kr->lockhd, -1) ) {
log_info ("can't lock `%s'\n", kr->fname );
rc = G10ERR_GENERAL;
}
else
kr->is_locked = 1;
}
}
if (rc || !yes) {
for (kr=kr_names; kr; kr = kr->next) {
if (!keyring_is_writable(kr))
continue;
if (!kr->is_locked)
;
else if (release_dotlock (kr->lockhd))
log_info ("can't unlock `%s'\n", kr->fname );
else
kr->is_locked = 0;
}
}
return rc;
}
/*
* Locate the default writable key resource, so that the next
* operation (which is only relevant for inserts) will be done on this
* resource.
*/
gpg_error_t
keydb_locate_writable (KEYDB_HANDLE hd, const char *reserved)
{
gpg_error_t rc;
(void)reserved;
if (!hd)
return G10ERR_INV_ARG;
rc = keydb_search_reset (hd); /* this does reset hd->current */
if (rc)
return rc;
/* If we have a primary set, try that one first */
if (primary_keyring)
{
for ( ; hd->current >= 0 && hd->current < hd->used; hd->current++)
{
if(hd->active[hd->current].token==primary_keyring)
{
if(keyring_is_writable (hd->active[hd->current].token))
return 0;
else
break;
}
}
rc = keydb_search_reset (hd); /* this does reset hd->current */
if (rc)
return rc;
}
for ( ; hd->current >= 0 && hd->current < hd->used; hd->current++)
{
switch (hd->active[hd->current].type)
{
case KEYDB_RESOURCE_TYPE_NONE:
BUG();
break;
case KEYDB_RESOURCE_TYPE_KEYRING:
if (keyring_is_writable (hd->active[hd->current].token))
return 0; /* found (hd->current is set to it) */
break;
case KEYDB_RESOURCE_TYPE_KEYBOX:
if (keybox_is_writable (hd->active[hd->current].token))
return 0; /* found (hd->current is set to it) */
break;
}
}
return gpg_error (GPG_ERR_NOT_FOUND);
}
/*
* Rebuild the caches of all key resources.
*/
void
keydb_rebuild_caches (int noisy)
{
int i, rc;
for (i=0; i < used_resources; i++)
{
if (all_resources[i].secret)
continue;
if (!keyring_is_writable (all_resources[i].token))
continue;
switch (all_resources[i].type)
{
case KEYDB_RESOURCE_TYPE_NONE: /* ignore */
case KEYDB_RESOURCE_TYPE_KEYBOX: /* ignore */
break;
case KEYDB_RESOURCE_TYPE_KEYRING:
rc = keyring_rebuild_cache (all_resources[i].token,noisy);
if (rc)
log_error (_("failed to rebuild keyring cache: %s\n"),
g10_errstr (rc));
break;
}
}
}
/*
* Lock the keyring with the given handle, or unlock if YES is false.
* We ignore the handle and lock all registered files.
*/
int
keyring_lock (KEYRING_HANDLE hd, int yes)
{
KR_RESOURCE kr;
int rc = 0;
(void)hd;
if (yes) {
/* first make sure the lock handles are created */
for (kr=kr_resources; kr; kr = kr->next) {
if (!keyring_is_writable(kr))
continue;
if (!kr->lockhd) {
kr->lockhd = dotlock_create (kr->fname, 0);
if (!kr->lockhd) {
log_info ("can't allocate lock for '%s'\n", kr->fname );
rc = GPG_ERR_GENERAL;
}
}
}
if (rc)
return rc;
/* and now set the locks */
for (kr=kr_resources; kr; kr = kr->next) {
if (!keyring_is_writable(kr))
continue;
if (kr->is_locked)
continue;
#ifdef HAVE_W32_SYSTEM
/* Under Windows we need to CloseHandle the file before we
* try to lock it. This is because another process might
* have taken the lock and is using keybox_file_rename to
* rename the base file. How if our dotlock_take below is
* waiting for the lock but we have the base file still
* open, keybox_file_rename will never succeed as we are
* in a deadlock. */
iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE, 0,
(char*)kr->fname);
#endif /*HAVE_W32_SYSTEM*/
if (dotlock_take (kr->lockhd, -1) ) {
log_info ("can't lock '%s'\n", kr->fname );
rc = GPG_ERR_GENERAL;
}
else
kr->is_locked = 1;
}
}
if (rc || !yes) {
for (kr=kr_resources; kr; kr = kr->next) {
if (!keyring_is_writable(kr))
continue;
if (!kr->is_locked)
continue;
if (dotlock_release (kr->lockhd))
log_info ("can't unlock '%s'\n", kr->fname );
else
kr->is_locked = 0;
}
}
return rc;
}
