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From 7b647338a40d701c6a5bb51c48c10a31a6b72699 Mon Sep 17 00:00:00 2001
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From: Sumit Bose <sbose@redhat.com>
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Date: Thu, 30 Jan 2020 13:14:14 +0100
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Subject: [PATCH 24/25] p11_child: check if card is present in wait_for_card()
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Some implementations of C_WaitForSlotEvent() might return even if no
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card was inserted. So it has to be checked if a card is really present.
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Resolves: https://pagure.io/SSSD/sssd/issue/4159
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Reviewed-by: Pavel Březina <pbrezina@redhat.com>
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---
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src/p11_child/p11_child_openssl.c | 47 ++++++++++++++++---------------
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1 file changed, 25 insertions(+), 22 deletions(-)
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diff --git a/src/p11_child/p11_child_openssl.c b/src/p11_child/p11_child_openssl.c
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index 56601b117..295715612 100644
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--- a/src/p11_child/p11_child_openssl.c
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+++ b/src/p11_child/p11_child_openssl.c
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@@ -1546,35 +1546,38 @@ static errno_t wait_for_card(CK_FUNCTION_LIST *module, CK_SLOT_ID *slot_id)
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CK_RV rv;
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CK_SLOT_INFO info;
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- rv = module->C_WaitForSlotEvent(wait_flags, slot_id, NULL);
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- if (rv != CKR_OK) {
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- if (rv != CKR_FUNCTION_NOT_SUPPORTED) {
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+ do {
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+ rv = module->C_WaitForSlotEvent(wait_flags, slot_id, NULL);
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+ if (rv != CKR_OK && rv != CKR_FUNCTION_NOT_SUPPORTED) {
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DEBUG(SSSDBG_OP_FAILURE,
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"C_WaitForSlotEvent failed [%lu][%s].\n",
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rv, p11_kit_strerror(rv));
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return EIO;
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}
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- /* Poor man's wait */
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- do {
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+ if (rv == CKR_FUNCTION_NOT_SUPPORTED) {
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+ /* Poor man's wait */
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sleep(10);
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- rv = module->C_GetSlotInfo(*slot_id, &info;;
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- if (rv != CKR_OK) {
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- DEBUG(SSSDBG_OP_FAILURE, "C_GetSlotInfo failed\n");
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- return EIO;
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- }
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- DEBUG(SSSDBG_TRACE_ALL,
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- "Description [%s] Manufacturer [%s] flags [%lu] "
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- "removable [%s] token present [%s].\n",
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- info.slotDescription, info.manufacturerID, info.flags,
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- (info.flags & CKF_REMOVABLE_DEVICE) ? "true": "false",
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- (info.flags & CKF_TOKEN_PRESENT) ? "true": "false");
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- if ((info.flags & CKF_REMOVABLE_DEVICE)
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- && (info.flags & CKF_TOKEN_PRESENT)) {
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- break;
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- }
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- } while (true);
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- }
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+ }
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+
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+ rv = module->C_GetSlotInfo(*slot_id, &info;;
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+ if (rv != CKR_OK) {
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+ DEBUG(SSSDBG_OP_FAILURE, "C_GetSlotInfo failed\n");
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+ return EIO;
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+ }
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+ DEBUG(SSSDBG_TRACE_ALL,
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+ "Description [%s] Manufacturer [%s] flags [%lu] "
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+ "removable [%s] token present [%s].\n",
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+ info.slotDescription, info.manufacturerID, info.flags,
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+ (info.flags & CKF_REMOVABLE_DEVICE) ? "true": "false",
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+ (info.flags & CKF_TOKEN_PRESENT) ? "true": "false");
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+
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+ /* Check if really a token is present */
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+ if ((info.flags & CKF_REMOVABLE_DEVICE)
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+ && (info.flags & CKF_TOKEN_PRESENT)) {
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+ break;
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+ }
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+ } while (true);
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return EOK;
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}
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--
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2.20.1
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