[RFC 19/29] conf: Extract error-checking code from virNetworkDNSTxtDefParseXML

[Shi Lei <shi_lei@xxxxxxxxxxxxxx>]

Signed-off-by: Shi Lei <shi_lei@xxxxxxxxxxxxxx>
---
 docs/schemas/network.rng | 13 ++++++++-
 src/conf/network_conf.c  | 60 +++++++++++++++++++++++++++-------------
 2 files changed, 53 insertions(+), 20 deletions(-)

diff --git a/docs/schemas/network.rng b/docs/schemas/network.rng
index 4caea02..b0f4a64 100644
--- a/docs/schemas/network.rng
+++ b/docs/schemas/network.rng
@@ -292,7 +292,18 @@
               <zeroOrMore>
                 <!-- VIRT:DIRECTIVE {
                   "structure": {"output": "src/conf/network_conf"},
-                  "clearfunc": {"output": "src/conf/network_conf"}
+                  "clearfunc": {"output": "src/conf/network_conf"},
+                  "parsefunc": {
+                    "post": true,
+                    "args.noctxt": true,
+                    "args.instname": true,
+                    "args": [
+                      {"name": "partialOkay", "type": "Bool"}
+                    ]
+                  },
+                  "members": [
+                    {"id": "value", "opt": true}
+                  ]
                 } -->
                 <element name="txt">
                   <attribute name="name"><ref name="dnsName"/></attribute>
diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c
index 0469f03..f83799f 100644
--- a/src/conf/network_conf.c
+++ b/src/conf/network_conf.c
@@ -488,6 +488,41 @@ virSocketAddrRangeParseXML(const char *networkName,
 }
 
 
+static int
+virNetworkDNSTxtDefParseXMLPost(xmlNodePtr curnode G_GNUC_UNUSED,
+                                virNetworkDNSTxtDefPtr def,
+                                const char *networkName,
+                                bool partialOkay,
+                                const char *nameStr G_GNUC_UNUSED,
+                                const char *valueStr G_GNUC_UNUSED)
+{
+    const char *bad = " ,";
+
+    if (strcspn(def->name, bad) != strlen(def->name)) {
+        virReportError(VIR_ERR_XML_DETAIL,
+                       _("prohibited character in DNS TXT record "
+                         "name '%s' of network %s"), def->name, networkName);
+        return -1;
+    }
+
+    if (!def->value && !partialOkay) {
+        virReportError(VIR_ERR_XML_DETAIL,
+                       _("missing required value attribute in DNS TXT record "
+                         "named '%s' of network %s"), def->name, networkName);
+        return -1;
+    }
+
+    if (!(def->name || def->value)) {
+        virReportError(VIR_ERR_XML_DETAIL,
+                       _("Missing required name or value "
+                         "in DNS TXT record of network %s"), networkName);
+        return -1;
+    }
+
+    return 0;
+}
+
+
 static int
 virNetworkDHCPHostDefParseXML(const char *networkName,
                               virNetworkIPDefPtr def,
@@ -717,33 +752,20 @@ virNetworkDNSTxtDefParseXML(const char *networkName,
                             virNetworkDNSTxtDefPtr def,
                             bool partialOkay)
 {
-    const char *bad = " ,";
-
     if (!(def->name = virXMLPropString(node, "name"))) {
         virReportError(VIR_ERR_XML_DETAIL,
                        _("missing required name attribute in DNS TXT record "
                          "of network %s"), networkName);
         goto error;
     }
-    if (strcspn(def->name, bad) != strlen(def->name)) {
-        virReportError(VIR_ERR_XML_DETAIL,
-                       _("prohibited character in DNS TXT record "
-                         "name '%s' of network %s"), def->name, networkName);
-        goto error;
-    }
-    if (!(def->value = virXMLPropString(node, "value")) && !partialOkay) {
-        virReportError(VIR_ERR_XML_DETAIL,
-                       _("missing required value attribute in DNS TXT record "
-                         "named '%s' of network %s"), def->name, networkName);
-        goto error;
-    }
 
-    if (!(def->name || def->value)) {
-        virReportError(VIR_ERR_XML_DETAIL,
-                       _("Missing required name or value "
-                         "in DNS TXT record of network %s"), networkName);
+    def->value = virXMLPropString(node, "value");
+
+    if (virNetworkDNSTxtDefParseXMLPost(node, def,
+                                        networkName, partialOkay,
+                                        def->name, def->value) < 0)
         goto error;
-    }
+
     return 0;
 
  error:
-- 
2.17.1