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From 44b8a63a2e0bcd5740db4c9f49d635ab1d5b9b25 Mon Sep 17 00:00:00 2001
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Message-Id: <44b8a63a2e0bcd5740db4c9f49d635ab1d5b9b25@dist-git>
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From: John Ferlan <jferlan@redhat.com>
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Date: Thu, 13 Dec 2018 10:26:46 -0500
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Subject: [PATCH] secret: Add check/validation for correct usage when
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 LookupByUUID
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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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https://bugzilla.redhat.com/show_bug.cgi?id=1656255
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If virSecretGetSecretString is using by secretLookupByUUID,
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then it's possible the found sec->usageType doesn't match the
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desired @secretUsageType. If this occurs for the encrypted
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volume creation processing and a subsequent pool refresh is
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executed, then the secret used to create the volume will not
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be found by the storageBackendLoadDefaultSecrets which expects
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to find secrets by VIR_SECRET_USAGE_TYPE_VOLUME.
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Add a check to virSecretGetSecretString to avoid the possibility
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along with an error indicating the incorrect matched types.
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Signed-off-by: John Ferlan <jferlan@redhat.com>
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ACKed-by: Michal Privoznik <mprivozn@redhat.com>
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(cherry picked from commit e0eb8a8a696ee334fa33281b880e480e76348052)
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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 src/secret/secret_util.c | 17 +++++++++++++++++
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 tests/qemuxml2argvtest.c |  4 +++-
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 2 files changed, 20 insertions(+), 1 deletion(-)
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diff --git a/src/secret/secret_util.c b/src/secret/secret_util.c
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index 16e43ab2cc..27e164a425 100644
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--- a/src/secret/secret_util.c
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+++ b/src/secret/secret_util.c
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@@ -71,6 +71,23 @@ virSecretGetSecretString(virConnectPtr conn,
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     if (!sec)
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         goto cleanup;
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+    /* NB: NONE is a byproduct of the qemuxml2argvtest test mocking
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+     * for UUID lookups. Normal secret XML processing would fail if
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+     * the usage type was NONE and since we have no way to set the
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+     * expected usage in that environment, let's just accept NONE */
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+    if (sec->usageType != VIR_SECRET_USAGE_TYPE_NONE &&
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+        sec->usageType != secretUsageType) {
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+        char uuidstr[VIR_UUID_STRING_BUFLEN];
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+
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+        virUUIDFormat(seclookupdef->u.uuid, uuidstr);
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+        virReportError(VIR_ERR_INVALID_ARG,
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+                       _("secret with uuid %s is of type '%s' not "
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+                         "expected '%s' type"),
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+                       uuidstr, virSecretUsageTypeToString(sec->usageType),
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+                       virSecretUsageTypeToString(secretUsageType));
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+        goto cleanup;
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+    }
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+
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     *secret = conn->secretDriver->secretGetValue(sec, secret_size, 0,
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                                                  VIR_SECRET_GET_VALUE_INTERNAL_CALL);
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diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
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index 0908bc5d08..bd4aa1266d 100644
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--- a/tests/qemuxml2argvtest.c
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+++ b/tests/qemuxml2argvtest.c
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@@ -80,7 +80,9 @@ static virSecretPtr
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 fakeSecretLookupByUUID(virConnectPtr conn,
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                        const unsigned char *uuid)
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 {
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-    return virGetSecret(conn, uuid, 0, "");
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+    /* NB: This mocked value could be "tls" or "volume" depending on
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+     * which test is being run, we'll leave at NONE (or 0) */
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+    return virGetSecret(conn, uuid, VIR_SECRET_USAGE_TYPE_NONE, "");
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 }
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 static virSecretDriver fakeSecretDriver = {
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-- 
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2.20.1
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