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Blame SOURCES/0138-KRB5-Check-FAST-kinit-errors-using-get_tgt_times.patch

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From 03afa4cbef2c2ba3c70fbad4f3e1e36c05fafe82 Mon Sep 17 00:00:00 2001
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From: Jakub Hrozek <jhrozek@redhat.com>
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Date: Mon, 8 Dec 2014 13:29:23 +0100
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Subject: [PATCH 138/138] KRB5: Check FAST kinit errors using get_tgt_times()
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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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Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>
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---
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 src/providers/krb5/krb5_child.c | 28 +++++++++++++++-------------
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 1 file changed, 15 insertions(+), 13 deletions(-)
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diff --git a/src/providers/krb5/krb5_child.c b/src/providers/krb5/krb5_child.c
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index 8f23346a67d4d2467a4d1869fd298ec4d6f68e92..3318e0647c0e7d7f0e7305cc4204d9c2db020162 100644
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--- a/src/providers/krb5/krb5_child.c
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+++ b/src/providers/krb5/krb5_child.c
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@@ -1662,6 +1662,7 @@ static krb5_error_code get_tgt_times(krb5_context ctx, const char *ccname,
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     krberr = krb5_cc_resolve(ctx, ccname, &ccache);
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     if (krberr != 0) {
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         DEBUG(SSSDBG_CRIT_FAILURE, "krb5_cc_resolve failed.\n");
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+        KRB5_CHILD_DEBUG(SSSDBG_CRIT_FAILURE, krberr);
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         goto done;
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     }
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@@ -1814,7 +1815,6 @@ static krb5_error_code check_fast_ccache(TALLOC_CTX *mem_ctx,
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             } while (kerr == -1 && errno == EINTR);
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             if (kerr > 0) {
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-                kerr = EIO;
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                 if (WIFEXITED(status)) {
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                     kerr = WEXITSTATUS(status);
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                     /* Don't blindly fail if the child fails, but check
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@@ -1830,26 +1830,28 @@ static krb5_error_code check_fast_ccache(TALLOC_CTX *mem_ctx,
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                           fchild_pid);
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                 }
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             } else {
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-                DEBUG(SSSDBG_FUNC_DATA,
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-                    "Failed to wait for children %d\n", fchild_pid);
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-                kerr = EIO;
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+                DEBUG(SSSDBG_CRIT_FAILURE,
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+                      "Failed to wait for child %d\n", fchild_pid);
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+                /* Let the code re-check the TGT times and fail if we
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+                 * can't find the updated principal */
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             }
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     }
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     /* Check the ccache times again. Should be updated ... */
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     memset(&tgtt, 0, sizeof(tgtt));
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     kerr = get_tgt_times(ctx, ccname, server_princ, client_princ, &tgtt);
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-    if (kerr == 0) {
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-        if (tgtt.endtime > time(NULL)) {
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-            DEBUG(SSSDBG_FUNC_DATA, "FAST TGT was successfully recreated!\n");
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-            goto done;
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-        } else {
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-            kerr = ERR_CREDS_EXPIRED;
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-            goto done;
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-        }
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+    if (kerr != 0) {
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+        DEBUG(SSSDBG_OP_FAILURE, "get_tgt_times() failed\n");
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+        goto done;
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     }
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-    kerr = 0;
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+    if (tgtt.endtime < time(NULL)) {
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+        DEBUG(SSSDBG_OP_FAILURE,
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+              "Valid FAST TGT not found after attempting to renew it\n");
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+        kerr = ERR_CREDS_EXPIRED;
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+        goto done;
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+    }
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+    DEBUG(SSSDBG_FUNC_DATA, "FAST TGT was successfully recreated!\n");
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 done:
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     if (client_princ != NULL) {
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-- 
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1.9.3
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