[libvirt] [PATCH 3/4] Validate the bios_date format for <sysinfo>

[John Ferlan]

---
 src/conf/domain_conf.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index a8b5dfd..43273f8 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -11591,6 +11591,30 @@ virDomainDefParseXML(xmlDocPtr xml,
                 goto error;
             }
         }
+        if (def->sysinfo->bios_date != NULL) {
+            char *date = def->sysinfo->bios_date;
+            char *ptr;
+            struct tm tm;
+            memset(&tm, 0, sizeof(tm));
+
+            /* Validate just the format of the date
+             * Expect mm/dd/yyyy or mm/dd/yy,
+             * where yy must be 00->99 and would be assumed to be 19xx
+             * a yyyy date should be 1900 and beyond
+             */
+            if (virStrToLong_i(date, &ptr, 10, &tm.tm_mon) < 0 ||
+                *ptr != '/' ||
+                virStrToLong_i(ptr+1, &ptr, 10, &tm.tm_mday) < 0 ||
+                *ptr != '/' ||
+                virStrToLong_i(ptr+1, &ptr, 10, &tm.tm_year) < 0 ||
+                *ptr != '\0' ||
+                (tm.tm_year < 0 || (tm.tm_year >= 100 && tm.tm_year < 1900))) {
+                virReportError(VIR_ERR_INTERNAL_ERROR,
+                               _("Invalid BIOS 'date' format: %s"),
+                               def->sysinfo->bios_date);
+                goto error;
+            }
+        }
     }
 
     if ((tmp = virXPathString("string(./os/smbios/@mode)", ctxt))) {
-- 
1.8.1.4