Blame SOURCES/0030-sysdb-make-sysdb_update_subdomains-more-robust.patch

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From 6f308f7833669b91000e42907380aa4cbe3fc145 Mon Sep 17 00:00:00 2001
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From: Sumit Bose <sbose@redhat.com>
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Date: Thu, 7 May 2020 15:47:35 +0200
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Subject: [PATCH 30/36] sysdb: make sysdb_update_subdomains() more robust
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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 NULL checks are added basically to allow that missing values can be
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set later.
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Resolves: https://github.com/SSSD/sssd/issues/5151
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Reviewed-by: Pavel Březina <pbrezina@redhat.com>
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(cherry picked from commit 8ca799ea968e548337acb0300642a0d88f1bba9b)
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Reviewed-by: Pavel Březina <pbrezina@redhat.com>
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---
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 src/db/sysdb_subdomains.c | 12 +++++++++---
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 1 file changed, 9 insertions(+), 3 deletions(-)
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diff --git a/src/db/sysdb_subdomains.c b/src/db/sysdb_subdomains.c
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index 59d2c5118..ee3c7f1aa 100644
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--- a/src/db/sysdb_subdomains.c
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+++ b/src/db/sysdb_subdomains.c
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@@ -420,7 +420,9 @@ errno_t sysdb_update_subdomains(struct sss_domain_info *domain,
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                 }
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                 /* in theory these may change, but it should never happen */
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-                if (strcasecmp(dom->realm, realm) != 0) {
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+                if ((dom->realm == NULL && realm != NULL)
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+                        || (dom->realm != NULL && realm != NULL
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+                            && strcasecmp(dom->realm, realm) != 0)) {
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                     DEBUG(SSSDBG_TRACE_INTERNAL,
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                           "Realm name changed from [%s] to [%s]!\n",
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                            dom->realm, realm);
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@@ -431,7 +433,9 @@ errno_t sysdb_update_subdomains(struct sss_domain_info *domain,
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                         goto done;
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                     }
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                 }
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-                if (strcasecmp(dom->flat_name, flat) != 0) {
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+                if ((dom->flat_name == NULL && flat != NULL)
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+                        || (dom->flat_name != NULL && flat != NULL
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+                            && strcasecmp(dom->flat_name, flat) != 0)) {
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                     DEBUG(SSSDBG_TRACE_INTERNAL,
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                           "Flat name changed from [%s] to [%s]!\n",
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                            dom->flat_name, flat);
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@@ -442,7 +446,9 @@ errno_t sysdb_update_subdomains(struct sss_domain_info *domain,
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                         goto done;
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                     }
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                 }
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-                if (strcasecmp(dom->domain_id, id) != 0) {
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+                if ((dom->domain_id == NULL && id != NULL)
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+                        || (dom->domain_id != NULL && id != NULL
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+                            && strcasecmp(dom->domain_id, id) != 0)) {
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                     DEBUG(SSSDBG_TRACE_INTERNAL,
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                           "Domain changed from [%s] to [%s]!\n",
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                            dom->domain_id, id);
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-- 
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2.21.1
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