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[libvirt] [PATCH v2] Implement DNS SRV record into the bridge driver
by Michal Novotny 11 Aug '11

11 Aug '11

From: Michal Novotny <mignov(a)gmail.com> Hi, this is the second version of my patch to the bridge driver and libvirt XML file to include support for the SRV records in the DNS. The syntax is based on DNSMasq man page and tests for both xml2xml and xml2argv were added as well. Differences between v1 and v2: - A minor rewrite of integer parsing functionality - Extend tests to test with both minimal and full set of attributes - Check for service name length implemented Signed-off-by: Michal Novotny <minovotn(a)redhat.com> Signed-off-by: Michal Novotny <mignov(a)gmail.com> --- docs/formatnetwork.html.in | 12 ++ docs/schemas/network.rng | 26 ++++ src/conf/network_conf.c | 130 +++++++++++++++++++- src/conf/network_conf.h | 16 +++ src/network/bridge_driver.c | 43 +++++++ .../nat-network-dns-srv-record-minimal.argv | 1 + .../nat-network-dns-srv-record-minimal.xml | 26 ++++ .../nat-network-dns-srv-record.argv | 1 + .../nat-network-dns-srv-record.xml | 26 ++++ tests/networkxml2argvtest.c | 2 + .../nat-network-dns-srv-record-minimal.xml | 26 ++++ .../nat-network-dns-srv-record.xml | 26 ++++ .../nat-network-dns-srv-record-minimal.xml | 26 ++++ .../nat-network-dns-srv-record.xml | 26 ++++ tests/networkxml2xmltest.c | 2 + tests/schematestutils.sh | 4 + 16 files changed, 391 insertions(+), 2 deletions(-) create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record.argv create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record.xml create mode 100644 tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml create mode 100644 tests/networkxml2xmlin/nat-network-dns-srv-record.xml create mode 100644 tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml create mode 100644 tests/networkxml2xmlout/nat-network-dns-srv-record.xml diff --git a/docs/formatnetwork.html.in b/docs/formatnetwork.html.in index 99031d0..51b1581 100644 --- a/docs/formatnetwork.html.in +++ b/docs/formatnetwork.html.in @@ -342,6 +342,7 @@ <mac address='00:16:3E:5D:C7:9E'/> <dns> <txt name="example" value="example value" /> + <srv service="name" protocol="tcp" domain="test-domain-name" target="." port="1024" priority="10" weight="10"/> </dns> <ip address="192.168.122.1" netmask="255.255.255.0"> <dhcp> @@ -390,6 +391,17 @@ <span class="since">Since 0.9.3</span> </dd> </dl> + <dl> + <dt><code>srv</code></dt> + <dd>The <code>dns</code> element can have also 0 or more <code>srv</code> + record elements. Each <code>srv</code> record element defines a DNS SRV record + and has 2 mandatory and 5 optional attributes. The mandatory attributes + are service name and protocol (tcp, udp) and the optional attributes are + target, port, priority, weight and domain as defined in DNS server SRV + RFC (RFC 2782). + <span class="since">Since 0.9.5</span> + </dd> + </dl> </dd> <dt><code>ip</code></dt> <dd>The <code>address</code> attribute defines an IPv4 address in diff --git a/docs/schemas/network.rng b/docs/schemas/network.rng index 1c44471..dae2799 100644 --- a/docs/schemas/network.rng +++ b/docs/schemas/network.rng @@ -138,6 +138,19 @@ </element> </zeroOrMore> <zeroOrMore> + <element name="srv"> + <attribute name="service"><text/></attribute> + <attribute name="protocol"><ref name="protocol"/></attribute> + <optional> + <attribute name="domain"><ref name="dnsName"/></attribute> + <attribute name="target"><text/></attribute> + <attribute name="port"><ref name="unsignedShort"/></attribute> + <attribute name="priority"><ref name="unsignedShort"/></attribute> + <attribute name="weight"><ref name="unsignedShort"/></attribute> + </optional> + </element> + </zeroOrMore> + <zeroOrMore> <element name="host"> <attribute name="ip"><ref name="ipv4Addr"/></attribute> <oneOrMore> @@ -206,6 +219,19 @@ </element> </define> + <define name='unsignedShort'> + <data type='integer'> + <param name="minInclusive">0</param> + <param name="maxInclusive">65535</param> + </data> + </define> + + <define name='protocol'> + <data type='string'> + <param name='pattern'>(tcp)|(udp)</param> + </data> + </define> + <define name='addr-family'> <data type='string'> <param name="pattern">(ipv4)|(ipv6)</param> diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c index b11c482..517c4d6 100644 --- a/src/conf/network_conf.c +++ b/src/conf/network_conf.c @@ -137,6 +137,15 @@ static void virNetworkDNSDefFree(virNetworkDNSDefPtr def) } VIR_FREE(def->hosts); } + if (def->nsrvrecords) { + while (def->nsrvrecords--) { + VIR_FREE(def->srvrecords[def->nsrvrecords].domain); + VIR_FREE(def->srvrecords[def->nsrvrecords].service); + VIR_FREE(def->srvrecords[def->nsrvrecords].protocol); + VIR_FREE(def->srvrecords[def->nsrvrecords].target); + } + VIR_FREE(def->srvrecords); + } VIR_FREE(def); } } @@ -552,8 +561,99 @@ error: } static int +virNetworkDNSSrvDefParseXML(virNetworkDNSDefPtr def, + xmlNodePtr cur, + xmlXPathContextPtr ctxt) +{ + char *domain; + char *service; + char *protocol; + char *target; + int port; + int priority; + int weight; + int ret = 0; + char xpath[1024] = { 0 }; + + if (!(service = virXMLPropString(cur, "service"))) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + "%s", _("Missing required service attribute in dns srv record")); + goto error; + } + + if (strlen(service) > DNS_RECORD_LENGTH_SRV) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + "%s", _("Service name is too long, limit is %d bytes"), DNS_RECORD_LENGTH_SRV); + goto error; + } + + if (!(protocol = virXMLPropString(cur, "protocol"))) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + _("Missing required protocol attribute in dns srv record '%s'"), service); + goto error; + } + + /* Check whether protocol value is the supported one */ + if (STRNEQ(protocol, "tcp") && (STRNEQ(protocol, "udp"))) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + _("Invalid protocol attribute value '%s'"), protocol); + goto error; + } + + if (VIR_REALLOC_N(def->srvrecords, def->nsrvrecords + 1) < 0) { + virReportOOMError(); + goto error; + } + + def->srvrecords[def->nsrvrecords].service = service; + def->srvrecords[def->nsrvrecords].protocol = protocol; + def->srvrecords[def->nsrvrecords].domain = NULL; + def->srvrecords[def->nsrvrecords].target = NULL; + def->srvrecords[def->nsrvrecords].port = 0; + def->srvrecords[def->nsrvrecords].priority = 0; + def->srvrecords[def->nsrvrecords].weight = 0; + + /* Following attributes are optional but we had to make sure their NULL above */ + if ((target = virXMLPropString(cur, "target")) && (domain = virXMLPropString(cur, "domain"))) { + snprintf(xpath, sizeof(xpath), "string(//network/dns/srv[@service='%s']/@port)", service); + if (virXPathInt(xpath, ctxt, &port)) + def->srvrecords[def->nsrvrecords].port = port; + + snprintf(xpath, sizeof(xpath), "string(//network/dns/srv[@service='%s']/@priority)", service); + if (virXPathInt(xpath, ctxt, &priority)) + def->srvrecords[def->nsrvrecords].priority = priority; + + snprintf(xpath, sizeof(xpath), "string(//network/dns/srv[@service='%s']/@weight)", service); + if (virXPathInt(xpath, ctxt, &weight)) + def->srvrecords[def->nsrvrecords].weight = weight; + + def->srvrecords[def->nsrvrecords].domain = domain; + def->srvrecords[def->nsrvrecords].target = target; + def->srvrecords[def->nsrvrecords].port = port; + def->srvrecords[def->nsrvrecords].priority = priority; + def->srvrecords[def->nsrvrecords].weight = weight; + } + + def->nsrvrecords++; + + goto cleanup; + +error: + VIR_FREE(domain); + VIR_FREE(service); + VIR_FREE(protocol); + VIR_FREE(target); + + ret = 1; + +cleanup: + return ret; +} + +static int virNetworkDNSDefParseXML(virNetworkDNSDefPtr *dnsdef, - xmlNodePtr node) + xmlNodePtr node, + xmlXPathContextPtr ctxt) { xmlNodePtr cur; int ret = -1; @@ -598,6 +698,11 @@ virNetworkDNSDefParseXML(virNetworkDNSDefPtr *dnsdef, name = NULL; value = NULL; } else if (cur->type == XML_ELEMENT_NODE && + xmlStrEqual(cur->name, BAD_CAST "srv")) { + ret = virNetworkDNSSrvDefParseXML(def, cur, ctxt); + if (ret < 0) + goto error; + } else if (cur->type == XML_ELEMENT_NODE && xmlStrEqual(cur->name, BAD_CAST "host")) { ret = virNetworkDNSHostsDefParseXML(def, cur); if (ret < 0) @@ -888,7 +993,7 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt) dnsNode = virXPathNode("./dns", ctxt); if (dnsNode != NULL) { - if (virNetworkDNSDefParseXML(&def->dns, dnsNode) < 0) + if (virNetworkDNSDefParseXML(&def->dns, dnsNode, ctxt) < 0) goto error; } @@ -1147,6 +1252,27 @@ virNetworkDNSDefFormat(virBufferPtr buf, def->txtrecords[i].value); } + for (i = 0 ; i < def->nsrvrecords ; i++) { + if (def->srvrecords[i].service && def->srvrecords[i].protocol) { + virBufferAsprintf(buf, " <srv service='%s' protocol='%s' ", + def->srvrecords[i].service, + def->srvrecords[i].protocol); + + if (def->srvrecords[i].domain) + virBufferAsprintf(buf, "domain='%s' ", def->srvrecords[i].domain); + if (def->srvrecords[i].target) + virBufferAsprintf(buf, "target='%s' ", def->srvrecords[i].target); + if (def->srvrecords[i].port) + virBufferAsprintf(buf, "port='%d' ", def->srvrecords[i].port); + if (def->srvrecords[i].priority) + virBufferAsprintf(buf, "priority='%d' ", def->srvrecords[i].priority); + if (def->srvrecords[i].weight) + virBufferAsprintf(buf, "weight='%d' ", def->srvrecords[i].weight); + + virBufferAsprintf(buf, "/>\n"); + } + } + if (def->nhosts) { int ii, j; diff --git a/src/conf/network_conf.h b/src/conf/network_conf.h index 869085e..5f05a3a 100644 --- a/src/conf/network_conf.h +++ b/src/conf/network_conf.h @@ -24,6 +24,8 @@ #ifndef __NETWORK_CONF_H__ # define __NETWORK_CONF_H__ +#define DNS_RECORD_LENGTH_SRV (512 - 30) /* Limit minus overhead as mentioned in RFC-2782 */ + # include <libxml/parser.h> # include <libxml/tree.h> # include <libxml/xpath.h> @@ -67,6 +69,18 @@ struct _virNetworkDNSTxtRecordsDef { char *value; }; +typedef struct _virNetworkDNSSrvRecordsDef virNetworkDNSSrvRecordsDef; +typedef virNetworkDNSSrvRecordsDef *virNetworkDNSSrvRecordsDefPtr; +struct _virNetworkDNSSrvRecordsDef { + char *domain; + char *service; + char *protocol; + char *target; + int port; + int priority; + int weight; +}; + struct _virNetworkDNSHostsDef { virSocketAddr ip; int nnames; @@ -80,6 +94,8 @@ struct _virNetworkDNSDef { virNetworkDNSTxtRecordsDefPtr txtrecords; unsigned int nhosts; virNetworkDNSHostsDefPtr hosts; + unsigned int nsrvrecords; + virNetworkDNSSrvRecordsDefPtr srvrecords; }; typedef struct _virNetworkDNSDef *virNetworkDNSDefPtr; diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c index c90db63..f4d952f 100644 --- a/src/network/bridge_driver.c +++ b/src/network/bridge_driver.c @@ -559,6 +559,49 @@ networkBuildDnsmasqArgv(virNetworkObjPtr network, virCommandAddArgPair(cmd, "--txt-record", record); VIR_FREE(record); } + + for (i = 0; i < dns->nsrvrecords; i++) { + char *record = NULL; + char *recordPort = NULL; + char *recordPriority = NULL; + char *recordWeight = NULL; + + if (dns->srvrecords[i].service && dns->srvrecords[i].protocol) { + if (dns->srvrecords[i].port) { + if (virAsprintf(&recordPort, "%d", dns->srvrecords[i].port) < 0) { + virReportOOMError(); + goto cleanup; + } + } + if (dns->srvrecords[i].priority) { + if (virAsprintf(&recordPriority, "%d", dns->srvrecords[i].priority) < 0) { + virReportOOMError(); + goto cleanup; + } + } + if (dns->srvrecords[i].weight) { + if (virAsprintf(&recordWeight, "%d", dns->srvrecords[i].weight) < 0) { + virReportOOMError(); + goto cleanup; + } + } + + if (virAsprintf(&record, "%s.%s.%s,%s,%s,%s,%s", + dns->srvrecords[i].service, + dns->srvrecords[i].protocol, + dns->srvrecords[i].domain ? dns->srvrecords[i].domain : "", + dns->srvrecords[i].target ? dns->srvrecords[i].target : "", + recordPort ? recordPort : "", + recordPriority ? recordPriority : "", + recordWeight ? recordWeight : "") < 0) { + virReportOOMError(); + goto cleanup; + } + + virCommandAddArgPair(cmd, "--srv-host", record); + VIR_FREE(record); + } + } } /* diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv new file mode 100644 index 0000000..174f751 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv @@ -0,0 +1 @@ +/usr/sbin/dnsmasq --strict-order --bind-interfaces --conf-file= --except-interface lo --srv-host=name.tcp.,,,, --listen-address 192.168.122.1 --listen-address 192.168.123.1 --listen-address 2001:db8:ac10:fe01::1 --listen-address 2001:db8:ac10:fd01::1 --listen-address 10.24.10.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override --dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile \ No newline at end of file diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml new file mode 100644 index 0000000..e9b7680 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record.argv b/tests/networkxml2argvdata/nat-network-dns-srv-record.argv new file mode 100644 index 0000000..2ea9809 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record.argv @@ -0,0 +1 @@ +/usr/sbin/dnsmasq --strict-order --bind-interfaces --conf-file= --except-interface lo --srv-host=name.tcp.test-domain-name,.,1024,10,10 --listen-address 192.168.122.1 --listen-address 192.168.123.1 --listen-address 2001:db8:ac10:fe01::1 --listen-address 2001:db8:ac10:fd01::1 --listen-address 10.24.10.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override --dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile \ No newline at end of file diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record.xml b/tests/networkxml2argvdata/nat-network-dns-srv-record.xml new file mode 100644 index 0000000..4be85b5 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2argvtest.c b/tests/networkxml2argvtest.c index 4a11d6f..2dd9b7f 100644 --- a/tests/networkxml2argvtest.c +++ b/tests/networkxml2argvtest.c @@ -120,6 +120,8 @@ mymain(void) DO_TEST("netboot-network"); DO_TEST("netboot-proxy-network"); DO_TEST("nat-network-dns-txt-record"); + DO_TEST("nat-network-dns-srv-record"); + DO_TEST("nat-network-dns-srv-record-minimal"); DO_TEST("nat-network-dns-hosts"); return (ret==0 ? EXIT_SUCCESS : EXIT_FAILURE); diff --git a/tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml b/tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml new file mode 100644 index 0000000..e9b7680 --- /dev/null +++ b/tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmlin/nat-network-dns-srv-record.xml b/tests/networkxml2xmlin/nat-network-dns-srv-record.xml new file mode 100644 index 0000000..4be85b5 --- /dev/null +++ b/tests/networkxml2xmlin/nat-network-dns-srv-record.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml b/tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml new file mode 100644 index 0000000..e9b7680 --- /dev/null +++ b/tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmlout/nat-network-dns-srv-record.xml b/tests/networkxml2xmlout/nat-network-dns-srv-record.xml new file mode 100644 index 0000000..4be85b5 --- /dev/null +++ b/tests/networkxml2xmlout/nat-network-dns-srv-record.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmltest.c b/tests/networkxml2xmltest.c index 5cdbedb..b9f6546 100644 --- a/tests/networkxml2xmltest.c +++ b/tests/networkxml2xmltest.c @@ -87,6 +87,8 @@ mymain(void) DO_TEST("netboot-network"); DO_TEST("netboot-proxy-network"); DO_TEST("nat-network-dns-txt-record"); + DO_TEST("nat-network-dns-srv-record"); + DO_TEST("nat-network-dns-srv-record-minimal"); DO_TEST("nat-network-dns-hosts"); DO_TEST("8021Qbh-net"); DO_TEST("direct-net"); diff --git a/tests/schematestutils.sh b/tests/schematestutils.sh index f2b3b50..5fe85ce 100644 --- a/tests/schematestutils.sh +++ b/tests/schematestutils.sh @@ -20,6 +20,10 @@ do result=`$cmd 2>&1` ret=$? + if test "$ret" != "0"; then + xmllint --relaxng $SCHEMA $xml + fi + test_result $n $(basename $(dirname $xml))"/"$(basename $xml) $ret if test "$verbose" = "1" && test $ret != 0 ; then printf '%s\n' "$cmd" "$result" -- 1.7.4.4

1 1

[libvirt] [PATCH v2] Implement DNS SRV record into the bridge driver
by Michal Novotny 11 Aug '11

11 Aug '11

Hi, this is the second version of my patch to the bridge driver and libvirt XML file to include support for the SRV records in the DNS. The syntax is based on DNSMasq man page and tests for both xml2xml and xml2argv were added as well. Differences between v1 and v2: - A minor rewrite of integer parsing functionality - Extend tests to test with both minimal and full set of attributes - Check for service name length implemented Signed-off-by: Michal Novotny <minovotn(a)redhat.com> --- docs/formatnetwork.html.in | 12 ++ docs/schemas/network.rng | 26 ++++ src/conf/network_conf.c | 130 +++++++++++++++++++- src/conf/network_conf.h | 16 +++ src/network/bridge_driver.c | 43 +++++++ .../nat-network-dns-srv-record-minimal.argv | 1 + .../nat-network-dns-srv-record-minimal.xml | 26 ++++ .../nat-network-dns-srv-record.argv | 1 + .../nat-network-dns-srv-record.xml | 26 ++++ tests/networkxml2argvtest.c | 2 + .../nat-network-dns-srv-record-minimal.xml | 26 ++++ .../nat-network-dns-srv-record.xml | 26 ++++ .../nat-network-dns-srv-record-minimal.xml | 26 ++++ .../nat-network-dns-srv-record.xml | 26 ++++ tests/networkxml2xmltest.c | 2 + tests/schematestutils.sh | 4 + 16 files changed, 391 insertions(+), 2 deletions(-) create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record.argv create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record.xml create mode 100644 tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml create mode 100644 tests/networkxml2xmlin/nat-network-dns-srv-record.xml create mode 100644 tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml create mode 100644 tests/networkxml2xmlout/nat-network-dns-srv-record.xml diff --git a/docs/formatnetwork.html.in b/docs/formatnetwork.html.in index 99031d0..51b1581 100644 --- a/docs/formatnetwork.html.in +++ b/docs/formatnetwork.html.in @@ -342,6 +342,7 @@ <mac address='00:16:3E:5D:C7:9E'/> <dns> <txt name="example" value="example value" /> + <srv service="name" protocol="tcp" domain="test-domain-name" target="." port="1024" priority="10" weight="10"/> </dns> <ip address="192.168.122.1" netmask="255.255.255.0"> <dhcp> @@ -390,6 +391,17 @@ <span class="since">Since 0.9.3</span> </dd> </dl> + <dl> + <dt><code>srv</code></dt> + <dd>The <code>dns</code> element can have also 0 or more <code>srv</code> + record elements. Each <code>srv</code> record element defines a DNS SRV record + and has 2 mandatory and 5 optional attributes. The mandatory attributes + are service name and protocol (tcp, udp) and the optional attributes are + target, port, priority, weight and domain as defined in DNS server SRV + RFC (RFC 2782). + <span class="since">Since 0.9.5</span> + </dd> + </dl> </dd> <dt><code>ip</code></dt> <dd>The <code>address</code> attribute defines an IPv4 address in diff --git a/docs/schemas/network.rng b/docs/schemas/network.rng index 1c44471..dae2799 100644 --- a/docs/schemas/network.rng +++ b/docs/schemas/network.rng @@ -138,6 +138,19 @@ </element> </zeroOrMore> <zeroOrMore> + <element name="srv"> + <attribute name="service"><text/></attribute> + <attribute name="protocol"><ref name="protocol"/></attribute> + <optional> + <attribute name="domain"><ref name="dnsName"/></attribute> + <attribute name="target"><text/></attribute> + <attribute name="port"><ref name="unsignedShort"/></attribute> + <attribute name="priority"><ref name="unsignedShort"/></attribute> + <attribute name="weight"><ref name="unsignedShort"/></attribute> + </optional> + </element> + </zeroOrMore> + <zeroOrMore> <element name="host"> <attribute name="ip"><ref name="ipv4Addr"/></attribute> <oneOrMore> @@ -206,6 +219,19 @@ </element> </define> + <define name='unsignedShort'> + <data type='integer'> + <param name="minInclusive">0</param> + <param name="maxInclusive">65535</param> + </data> + </define> + + <define name='protocol'> + <data type='string'> + <param name='pattern'>(tcp)|(udp)</param> + </data> + </define> + <define name='addr-family'> <data type='string'> <param name="pattern">(ipv4)|(ipv6)</param> diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c index b11c482..517c4d6 100644 --- a/src/conf/network_conf.c +++ b/src/conf/network_conf.c @@ -137,6 +137,15 @@ static void virNetworkDNSDefFree(virNetworkDNSDefPtr def) } VIR_FREE(def->hosts); } + if (def->nsrvrecords) { + while (def->nsrvrecords--) { + VIR_FREE(def->srvrecords[def->nsrvrecords].domain); + VIR_FREE(def->srvrecords[def->nsrvrecords].service); + VIR_FREE(def->srvrecords[def->nsrvrecords].protocol); + VIR_FREE(def->srvrecords[def->nsrvrecords].target); + } + VIR_FREE(def->srvrecords); + } VIR_FREE(def); } } @@ -552,8 +561,99 @@ error: } static int +virNetworkDNSSrvDefParseXML(virNetworkDNSDefPtr def, + xmlNodePtr cur, + xmlXPathContextPtr ctxt) +{ + char *domain; + char *service; + char *protocol; + char *target; + int port; + int priority; + int weight; + int ret = 0; + char xpath[1024] = { 0 }; + + if (!(service = virXMLPropString(cur, "service"))) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + "%s", _("Missing required service attribute in dns srv record")); + goto error; + } + + if (strlen(service) > DNS_RECORD_LENGTH_SRV) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + "%s", _("Service name is too long, limit is %d bytes"), DNS_RECORD_LENGTH_SRV); + goto error; + } + + if (!(protocol = virXMLPropString(cur, "protocol"))) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + _("Missing required protocol attribute in dns srv record '%s'"), service); + goto error; + } + + /* Check whether protocol value is the supported one */ + if (STRNEQ(protocol, "tcp") && (STRNEQ(protocol, "udp"))) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + _("Invalid protocol attribute value '%s'"), protocol); + goto error; + } + + if (VIR_REALLOC_N(def->srvrecords, def->nsrvrecords + 1) < 0) { + virReportOOMError(); + goto error; + } + + def->srvrecords[def->nsrvrecords].service = service; + def->srvrecords[def->nsrvrecords].protocol = protocol; + def->srvrecords[def->nsrvrecords].domain = NULL; + def->srvrecords[def->nsrvrecords].target = NULL; + def->srvrecords[def->nsrvrecords].port = 0; + def->srvrecords[def->nsrvrecords].priority = 0; + def->srvrecords[def->nsrvrecords].weight = 0; + + /* Following attributes are optional but we had to make sure their NULL above */ + if ((target = virXMLPropString(cur, "target")) && (domain = virXMLPropString(cur, "domain"))) { + snprintf(xpath, sizeof(xpath), "string(//network/dns/srv[@service='%s']/@port)", service); + if (virXPathInt(xpath, ctxt, &port)) + def->srvrecords[def->nsrvrecords].port = port; + + snprintf(xpath, sizeof(xpath), "string(//network/dns/srv[@service='%s']/@priority)", service); + if (virXPathInt(xpath, ctxt, &priority)) + def->srvrecords[def->nsrvrecords].priority = priority; + + snprintf(xpath, sizeof(xpath), "string(//network/dns/srv[@service='%s']/@weight)", service); + if (virXPathInt(xpath, ctxt, &weight)) + def->srvrecords[def->nsrvrecords].weight = weight; + + def->srvrecords[def->nsrvrecords].domain = domain; + def->srvrecords[def->nsrvrecords].target = target; + def->srvrecords[def->nsrvrecords].port = port; + def->srvrecords[def->nsrvrecords].priority = priority; + def->srvrecords[def->nsrvrecords].weight = weight; + } + + def->nsrvrecords++; + + goto cleanup; + +error: + VIR_FREE(domain); + VIR_FREE(service); + VIR_FREE(protocol); + VIR_FREE(target); + + ret = 1; + +cleanup: + return ret; +} + +static int virNetworkDNSDefParseXML(virNetworkDNSDefPtr *dnsdef, - xmlNodePtr node) + xmlNodePtr node, + xmlXPathContextPtr ctxt) { xmlNodePtr cur; int ret = -1; @@ -598,6 +698,11 @@ virNetworkDNSDefParseXML(virNetworkDNSDefPtr *dnsdef, name = NULL; value = NULL; } else if (cur->type == XML_ELEMENT_NODE && + xmlStrEqual(cur->name, BAD_CAST "srv")) { + ret = virNetworkDNSSrvDefParseXML(def, cur, ctxt); + if (ret < 0) + goto error; + } else if (cur->type == XML_ELEMENT_NODE && xmlStrEqual(cur->name, BAD_CAST "host")) { ret = virNetworkDNSHostsDefParseXML(def, cur); if (ret < 0) @@ -888,7 +993,7 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt) dnsNode = virXPathNode("./dns", ctxt); if (dnsNode != NULL) { - if (virNetworkDNSDefParseXML(&def->dns, dnsNode) < 0) + if (virNetworkDNSDefParseXML(&def->dns, dnsNode, ctxt) < 0) goto error; } @@ -1147,6 +1252,27 @@ virNetworkDNSDefFormat(virBufferPtr buf, def->txtrecords[i].value); } + for (i = 0 ; i < def->nsrvrecords ; i++) { + if (def->srvrecords[i].service && def->srvrecords[i].protocol) { + virBufferAsprintf(buf, " <srv service='%s' protocol='%s' ", + def->srvrecords[i].service, + def->srvrecords[i].protocol); + + if (def->srvrecords[i].domain) + virBufferAsprintf(buf, "domain='%s' ", def->srvrecords[i].domain); + if (def->srvrecords[i].target) + virBufferAsprintf(buf, "target='%s' ", def->srvrecords[i].target); + if (def->srvrecords[i].port) + virBufferAsprintf(buf, "port='%d' ", def->srvrecords[i].port); + if (def->srvrecords[i].priority) + virBufferAsprintf(buf, "priority='%d' ", def->srvrecords[i].priority); + if (def->srvrecords[i].weight) + virBufferAsprintf(buf, "weight='%d' ", def->srvrecords[i].weight); + + virBufferAsprintf(buf, "/>\n"); + } + } + if (def->nhosts) { int ii, j; diff --git a/src/conf/network_conf.h b/src/conf/network_conf.h index 869085e..5f05a3a 100644 --- a/src/conf/network_conf.h +++ b/src/conf/network_conf.h @@ -24,6 +24,8 @@ #ifndef __NETWORK_CONF_H__ # define __NETWORK_CONF_H__ +#define DNS_RECORD_LENGTH_SRV (512 - 30) /* Limit minus overhead as mentioned in RFC-2782 */ + # include <libxml/parser.h> # include <libxml/tree.h> # include <libxml/xpath.h> @@ -67,6 +69,18 @@ struct _virNetworkDNSTxtRecordsDef { char *value; }; +typedef struct _virNetworkDNSSrvRecordsDef virNetworkDNSSrvRecordsDef; +typedef virNetworkDNSSrvRecordsDef *virNetworkDNSSrvRecordsDefPtr; +struct _virNetworkDNSSrvRecordsDef { + char *domain; + char *service; + char *protocol; + char *target; + int port; + int priority; + int weight; +}; + struct _virNetworkDNSHostsDef { virSocketAddr ip; int nnames; @@ -80,6 +94,8 @@ struct _virNetworkDNSDef { virNetworkDNSTxtRecordsDefPtr txtrecords; unsigned int nhosts; virNetworkDNSHostsDefPtr hosts; + unsigned int nsrvrecords; + virNetworkDNSSrvRecordsDefPtr srvrecords; }; typedef struct _virNetworkDNSDef *virNetworkDNSDefPtr; diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c index c90db63..f4d952f 100644 --- a/src/network/bridge_driver.c +++ b/src/network/bridge_driver.c @@ -559,6 +559,49 @@ networkBuildDnsmasqArgv(virNetworkObjPtr network, virCommandAddArgPair(cmd, "--txt-record", record); VIR_FREE(record); } + + for (i = 0; i < dns->nsrvrecords; i++) { + char *record = NULL; + char *recordPort = NULL; + char *recordPriority = NULL; + char *recordWeight = NULL; + + if (dns->srvrecords[i].service && dns->srvrecords[i].protocol) { + if (dns->srvrecords[i].port) { + if (virAsprintf(&recordPort, "%d", dns->srvrecords[i].port) < 0) { + virReportOOMError(); + goto cleanup; + } + } + if (dns->srvrecords[i].priority) { + if (virAsprintf(&recordPriority, "%d", dns->srvrecords[i].priority) < 0) { + virReportOOMError(); + goto cleanup; + } + } + if (dns->srvrecords[i].weight) { + if (virAsprintf(&recordWeight, "%d", dns->srvrecords[i].weight) < 0) { + virReportOOMError(); + goto cleanup; + } + } + + if (virAsprintf(&record, "%s.%s.%s,%s,%s,%s,%s", + dns->srvrecords[i].service, + dns->srvrecords[i].protocol, + dns->srvrecords[i].domain ? dns->srvrecords[i].domain : "", + dns->srvrecords[i].target ? dns->srvrecords[i].target : "", + recordPort ? recordPort : "", + recordPriority ? recordPriority : "", + recordWeight ? recordWeight : "") < 0) { + virReportOOMError(); + goto cleanup; + } + + virCommandAddArgPair(cmd, "--srv-host", record); + VIR_FREE(record); + } + } } /* diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv new file mode 100644 index 0000000..174f751 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv @@ -0,0 +1 @@ +/usr/sbin/dnsmasq --strict-order --bind-interfaces --conf-file= --except-interface lo --srv-host=name.tcp.,,,, --listen-address 192.168.122.1 --listen-address 192.168.123.1 --listen-address 2001:db8:ac10:fe01::1 --listen-address 2001:db8:ac10:fd01::1 --listen-address 10.24.10.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override --dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile \ No newline at end of file diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml new file mode 100644 index 0000000..e9b7680 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record.argv b/tests/networkxml2argvdata/nat-network-dns-srv-record.argv new file mode 100644 index 0000000..2ea9809 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record.argv @@ -0,0 +1 @@ +/usr/sbin/dnsmasq --strict-order --bind-interfaces --conf-file= --except-interface lo --srv-host=name.tcp.test-domain-name,.,1024,10,10 --listen-address 192.168.122.1 --listen-address 192.168.123.1 --listen-address 2001:db8:ac10:fe01::1 --listen-address 2001:db8:ac10:fd01::1 --listen-address 10.24.10.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override --dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile \ No newline at end of file diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record.xml b/tests/networkxml2argvdata/nat-network-dns-srv-record.xml new file mode 100644 index 0000000..4be85b5 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2argvtest.c b/tests/networkxml2argvtest.c index 4a11d6f..2dd9b7f 100644 --- a/tests/networkxml2argvtest.c +++ b/tests/networkxml2argvtest.c @@ -120,6 +120,8 @@ mymain(void) DO_TEST("netboot-network"); DO_TEST("netboot-proxy-network"); DO_TEST("nat-network-dns-txt-record"); + DO_TEST("nat-network-dns-srv-record"); + DO_TEST("nat-network-dns-srv-record-minimal"); DO_TEST("nat-network-dns-hosts"); return (ret==0 ? EXIT_SUCCESS : EXIT_FAILURE); diff --git a/tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml b/tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml new file mode 100644 index 0000000..e9b7680 --- /dev/null +++ b/tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmlin/nat-network-dns-srv-record.xml b/tests/networkxml2xmlin/nat-network-dns-srv-record.xml new file mode 100644 index 0000000..4be85b5 --- /dev/null +++ b/tests/networkxml2xmlin/nat-network-dns-srv-record.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml b/tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml new file mode 100644 index 0000000..e9b7680 --- /dev/null +++ b/tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmlout/nat-network-dns-srv-record.xml b/tests/networkxml2xmlout/nat-network-dns-srv-record.xml new file mode 100644 index 0000000..4be85b5 --- /dev/null +++ b/tests/networkxml2xmlout/nat-network-dns-srv-record.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmltest.c b/tests/networkxml2xmltest.c index 5cdbedb..b9f6546 100644 --- a/tests/networkxml2xmltest.c +++ b/tests/networkxml2xmltest.c @@ -87,6 +87,8 @@ mymain(void) DO_TEST("netboot-network"); DO_TEST("netboot-proxy-network"); DO_TEST("nat-network-dns-txt-record"); + DO_TEST("nat-network-dns-srv-record"); + DO_TEST("nat-network-dns-srv-record-minimal"); DO_TEST("nat-network-dns-hosts"); DO_TEST("8021Qbh-net"); DO_TEST("direct-net"); diff --git a/tests/schematestutils.sh b/tests/schematestutils.sh index f2b3b50..5fe85ce 100644 --- a/tests/schematestutils.sh +++ b/tests/schematestutils.sh @@ -20,6 +20,10 @@ do result=`$cmd 2>&1` ret=$? + if test "$ret" != "0"; then + xmllint --relaxng $SCHEMA $xml + fi + test_result $n $(basename $(dirname $xml))"/"$(basename $xml) $ret if test "$verbose" = "1" && test $ret != 0 ; then printf '%s\n' "$cmd" "$result" -- 1.7.4.4

1 0

[libvirt] [PATCH] Implement DNS SRV record into the bridge driver
by Michal Novotny 11 Aug '11

11 Aug '11

Hi, this is the patch to the bridge driver and libvirt XML file to include support for the SRV records in the DNS. The syntax is based on DNSMasq man page and tests for both xml2xml and xml2argv were added as well. Signed-off-by: Michal Novotny <minovotn(a)redhat.com> --- docs/formatnetwork.html.in | 12 ++ docs/schemas/network.rng | 30 +++++ src/conf/network_conf.c | 125 ++++++++++++++++++++ src/conf/network_conf.h | 14 ++ src/network/bridge_driver.c | 18 +++ .../nat-network-dns-srv-record.argv | 1 + .../nat-network-dns-srv-record.xml | 26 ++++ tests/networkxml2argvtest.c | 1 + .../nat-network-dns-srv-record.xml | 26 ++++ .../nat-network-dns-srv-record.xml | 26 ++++ tests/networkxml2xmltest.c | 1 + 12 files changed, 281 insertions(+), 1 deletions(-) create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record.argv create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record.xml create mode 100644 tests/networkxml2xmlin/nat-network-dns-srv-record.xml create mode 100644 tests/networkxml2xmlout/nat-network-dns-srv-record.xml diff --git a/docs/formatnetwork.html.in b/docs/formatnetwork.html.in index ddfa77c..4f748c4 100644 --- a/docs/formatnetwork.html.in +++ b/docs/formatnetwork.html.in @@ -148,6 +148,7 @@ <mac address='00:16:3E:5D:C7:9E'/> <dns> <txt name="example" value="example value" /> + <srv service="name" protocol="tcp" domain="test-domain-name" target="." port="1024" priority="10" weight="10"/> </dns> <ip address="192.168.122.1" netmask="255.255.255.0"> <dhcp> @@ -196,6 +197,17 @@ <span class="since">Since 0.9.3</span> </dd> </dl> + <dl> + <dt><code>srv</code></dt> + <dd>The <code>dns</code> element can have also 0 or more <code>srv</code> + record elements. Each srv record element defines a DNS SRV record + and has 2 mandatory and 4 optional attributes. The mandatory attributes + are service name and protocol (tcp, udp) and you can define optional + target, port, priority and weight arguments. The body of the element + have to be set to some data and therefore it's a pair tag. + <span class="since">Since 0.9.5</span> + </dd> + </dl> </dd> <dt><code>ip</code></dt> <dd>The <code>address</code> attribute defines an IPv4 address in diff --git a/docs/schemas/network.rng b/docs/schemas/network.rng index 1c44471..413698a 100644 --- a/docs/schemas/network.rng +++ b/docs/schemas/network.rng @@ -138,6 +138,22 @@ </element> </zeroOrMore> <zeroOrMore> + <element name="srv"> + <attribute name="service"><text/></attribute> + <attribute name="protocol"> + <choice> + <value>tcp</value> + <value>udp</value> + </choice> + </attribute> + <attribute name="domain"><text/></attribute> + <attribute name="target"><text/></attribute> + <attribute name="port"><ref name="port-for-user"/></attribute> + <attribute name="priority"><ref name="short-int"/></attribute> + <attribute name="weight"><ref name="short-int"/></attribute> + </element> + </zeroOrMore> + <zeroOrMore> <element name="host"> <attribute name="ip"><ref name="ipv4Addr"/></attribute> <oneOrMore> @@ -206,6 +222,20 @@ </element> </define> + <define name="port-for-user"> + <data type="integer"> + <param name="minInclusive">1024</param> + <param name="maxInclusive">65535</param> + </data> + </define> + + <define name="short-int"> + <data type="integer"> + <param name="minInclusive">0</param> + <param name="maxInclusive">127</param> + </data> + </define> + <define name='addr-family'> <data type='string'> <param name="pattern">(ipv4)|(ipv6)</param> diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c index b11c482..120b149 100644 --- a/src/conf/network_conf.c +++ b/src/conf/network_conf.c @@ -137,6 +137,14 @@ static void virNetworkDNSDefFree(virNetworkDNSDefPtr def) } VIR_FREE(def->hosts); } + if (def->nsrvrecords) { + while (def->nsrvrecords--) { + VIR_FREE(def->srvrecords[def->nsrvrecords].domain); + VIR_FREE(def->srvrecords[def->nsrvrecords].service); + VIR_FREE(def->srvrecords[def->nsrvrecords].protocol); + VIR_FREE(def->srvrecords[def->nsrvrecords].target); + } + } VIR_FREE(def); } } @@ -552,6 +560,107 @@ error: } static int +virNetworkDNSSrvDefParseXML(virNetworkDNSDefPtr def, + xmlNodePtr cur) +{ + char *domain = NULL; + char *service = NULL; + char *protocol = NULL; + char *target = NULL; + char *portString = NULL; + char *priorityString = NULL; + char *weightString = NULL; + int port; + int priority; + int weight; + int ret = 0; + + if (!(service = virXMLPropString(cur, "service"))) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + "%s", _("Missing required service attribute in dns srv record")); + goto error; + } + if (!(protocol = virXMLPropString(cur, "protocol"))) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + _("Missing required protocol attribute in dns srv record '%s'"), service); + goto error; + } + + target = virXMLPropString(cur, "target"); + domain = virXMLPropString(cur, "domain"); + portString = virXMLPropString(cur, "port"); + priorityString = virXMLPropString(cur, "priority"); + weightString = virXMLPropString(cur, "weight"); + + if (VIR_REALLOC_N(def->srvrecords, def->nsrvrecords + 1) < 0) { + virReportOOMError(); + goto error; + } + + if (portString && + virStrToLong_i(portString, NULL, 10, &port) < 0) { + virNetworkReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Cannot parse 'port' attribute")); + goto error; + } + + if (priorityString && + virStrToLong_i(priorityString, NULL, 10, &priority) < 0) { + virNetworkReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Cannot parse 'priority' attribute")); + goto error; + } + + if (weightString && + virStrToLong_i(weightString, NULL, 10, &weight) < 0) { + virNetworkReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Cannot parse 'weight' attribute")); + goto error; + } + + def->srvrecords[def->nsrvrecords].domain = domain; + def->srvrecords[def->nsrvrecords].service = service; + def->srvrecords[def->nsrvrecords].protocol = protocol; + def->srvrecords[def->nsrvrecords].target = target; + def->srvrecords[def->nsrvrecords].port = port; + def->srvrecords[def->nsrvrecords].priority = priority; + def->srvrecords[def->nsrvrecords].weight = weight; + def->nsrvrecords++; + + goto cleanup; + +error: + if (domain) + VIR_FREE(domain); + if (service) + VIR_FREE(service); + if (protocol) + VIR_FREE(protocol); + if (target) + VIR_FREE(target); + + ret = 1; + +cleanup: + if (portString) + VIR_FREE(portString); + if (priorityString) + VIR_FREE(priorityString); + if (weightString) + VIR_FREE(weightString); + + domain = NULL; + service = NULL; + protocol = NULL; + target = NULL; + portString = NULL; + priorityString = NULL; + weightString = NULL; + + return ret; +} + +static int virNetworkDNSDefParseXML(virNetworkDNSDefPtr *dnsdef, xmlNodePtr node) { @@ -598,6 +707,11 @@ virNetworkDNSDefParseXML(virNetworkDNSDefPtr *dnsdef, name = NULL; value = NULL; } else if (cur->type == XML_ELEMENT_NODE && + xmlStrEqual(cur->name, BAD_CAST "srv")) { + ret = virNetworkDNSSrvDefParseXML(def, cur); + if (ret < 0) + goto error; + } else if (cur->type == XML_ELEMENT_NODE && xmlStrEqual(cur->name, BAD_CAST "host")) { ret = virNetworkDNSHostsDefParseXML(def, cur); if (ret < 0) @@ -1147,6 +1261,17 @@ virNetworkDNSDefFormat(virBufferPtr buf, def->txtrecords[i].value); } + for (i = 0 ; i < def->nsrvrecords ; i++) { + virBufferAsprintf(buf, " <srv service='%s' protocol='%s' domain='%s' target='%s' port='%d' priority='%d' weight='%d' />\n", + def->srvrecords[i].service, + def->srvrecords[i].protocol, + def->srvrecords[i].domain, + def->srvrecords[i].target, + def->srvrecords[i].port, + def->srvrecords[i].priority, + def->srvrecords[i].weight); + } + if (def->nhosts) { int ii, j; diff --git a/src/conf/network_conf.h b/src/conf/network_conf.h index 869085e..08e08b2 100644 --- a/src/conf/network_conf.h +++ b/src/conf/network_conf.h @@ -67,6 +67,18 @@ struct _virNetworkDNSTxtRecordsDef { char *value; }; +typedef struct _virNetworkDNSSrvRecordsDef virNetworkDNSSrvRecordsDef; +typedef virNetworkDNSSrvRecordsDef *virNetworkDNSSrvRecordsDefPtr; +struct _virNetworkDNSSrvRecordsDef { + char *domain; + char *service; + char *protocol; + char *target; + int port; + int priority; + int weight; +}; + struct _virNetworkDNSHostsDef { virSocketAddr ip; int nnames; @@ -80,6 +92,8 @@ struct _virNetworkDNSDef { virNetworkDNSTxtRecordsDefPtr txtrecords; unsigned int nhosts; virNetworkDNSHostsDefPtr hosts; + unsigned int nsrvrecords; + virNetworkDNSSrvRecordsDefPtr srvrecords; }; typedef struct _virNetworkDNSDef *virNetworkDNSDefPtr; diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c index c90db63..e7f3b26 100644 --- a/src/network/bridge_driver.c +++ b/src/network/bridge_driver.c @@ -559,6 +559,24 @@ networkBuildDnsmasqArgv(virNetworkObjPtr network, virCommandAddArgPair(cmd, "--txt-record", record); VIR_FREE(record); } + + for (i = 0; i < dns->nsrvrecords; i++) { + char *record = NULL; + if (virAsprintf(&record, "%s.%s.%s,%s,%d,%d,%d", + dns->srvrecords[i].service, + dns->srvrecords[i].protocol, + dns->srvrecords[i].domain, + dns->srvrecords[i].target, + dns->srvrecords[i].port, + dns->srvrecords[i].priority, + dns->srvrecords[i].weight) < 0) { + virReportOOMError(); + goto cleanup; + } + + virCommandAddArgPair(cmd, "--srv-host", record); + VIR_FREE(record); + } } /* diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record.argv b/tests/networkxml2argvdata/nat-network-dns-srv-record.argv new file mode 100644 index 0000000..2ea9809 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record.argv @@ -0,0 +1 @@ +/usr/sbin/dnsmasq --strict-order --bind-interfaces --conf-file= --except-interface lo --srv-host=name.tcp.test-domain-name,.,1024,10,10 --listen-address 192.168.122.1 --listen-address 192.168.123.1 --listen-address 2001:db8:ac10:fe01::1 --listen-address 2001:db8:ac10:fd01::1 --listen-address 10.24.10.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override --dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile \ No newline at end of file diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record.xml b/tests/networkxml2argvdata/nat-network-dns-srv-record.xml new file mode 100644 index 0000000..4be85b5 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2argvtest.c b/tests/networkxml2argvtest.c index 4a11d6f..a9da613 100644 --- a/tests/networkxml2argvtest.c +++ b/tests/networkxml2argvtest.c @@ -120,6 +120,7 @@ mymain(void) DO_TEST("netboot-network"); DO_TEST("netboot-proxy-network"); DO_TEST("nat-network-dns-txt-record"); + DO_TEST("nat-network-dns-srv-record"); DO_TEST("nat-network-dns-hosts"); return (ret==0 ? EXIT_SUCCESS : EXIT_FAILURE); diff --git a/tests/networkxml2xmlin/nat-network-dns-srv-record.xml b/tests/networkxml2xmlin/nat-network-dns-srv-record.xml new file mode 100644 index 0000000..4be85b5 --- /dev/null +++ b/tests/networkxml2xmlin/nat-network-dns-srv-record.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmlout/nat-network-dns-srv-record.xml b/tests/networkxml2xmlout/nat-network-dns-srv-record.xml new file mode 100644 index 0000000..4be85b5 --- /dev/null +++ b/tests/networkxml2xmlout/nat-network-dns-srv-record.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmltest.c b/tests/networkxml2xmltest.c index 5cdbedb..8ee8e0e 100644 --- a/tests/networkxml2xmltest.c +++ b/tests/networkxml2xmltest.c @@ -87,6 +87,7 @@ mymain(void) DO_TEST("netboot-network"); DO_TEST("netboot-proxy-network"); DO_TEST("nat-network-dns-txt-record"); + DO_TEST("nat-network-dns-srv-record"); DO_TEST("nat-network-dns-hosts"); DO_TEST("8021Qbh-net"); DO_TEST("direct-net"); -- 1.7.4.4

3 5

[libvirt] [PATCH v2] Implement DNS SRV record into the bridge driver
by Michal Novotny 11 Aug '11

11 Aug '11

Hi, this is the second version of my patch to the bridge driver and libvirt XML file to include support for the SRV records in the DNS. The syntax is based on DNSMasq man page and tests for both xml2xml and xml2argv were added as well. Differences between v1 and v2: - A minor rewrite of integer parsing functionality - Extend tests to test with both minimal and full set of attributes - Check for service name length implemented Signed-off-by: Michal Novotny <minovotn(a)redhat.com> Signed-off-by: Michal Novotny <mignov(a)gmail.com> --- docs/formatnetwork.html.in | 12 ++ docs/schemas/network.rng | 26 ++++ src/conf/network_conf.c | 130 +++++++++++++++++++- src/conf/network_conf.h | 16 +++ src/network/bridge_driver.c | 43 +++++++ .../nat-network-dns-srv-record-minimal.argv | 1 + .../nat-network-dns-srv-record-minimal.xml | 26 ++++ .../nat-network-dns-srv-record.argv | 1 + .../nat-network-dns-srv-record.xml | 26 ++++ tests/networkxml2argvtest.c | 2 + .../nat-network-dns-srv-record-minimal.xml | 26 ++++ .../nat-network-dns-srv-record.xml | 26 ++++ .../nat-network-dns-srv-record-minimal.xml | 26 ++++ .../nat-network-dns-srv-record.xml | 26 ++++ tests/networkxml2xmltest.c | 2 + tests/schematestutils.sh | 4 + 16 files changed, 391 insertions(+), 2 deletions(-) create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record.argv create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record.xml create mode 100644 tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml create mode 100644 tests/networkxml2xmlin/nat-network-dns-srv-record.xml create mode 100644 tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml create mode 100644 tests/networkxml2xmlout/nat-network-dns-srv-record.xml diff --git a/docs/formatnetwork.html.in b/docs/formatnetwork.html.in index 99031d0..51b1581 100644 --- a/docs/formatnetwork.html.in +++ b/docs/formatnetwork.html.in @@ -342,6 +342,7 @@ <mac address='00:16:3E:5D:C7:9E'/> <dns> <txt name="example" value="example value" /> + <srv service="name" protocol="tcp" domain="test-domain-name" target="." port="1024" priority="10" weight="10"/> </dns> <ip address="192.168.122.1" netmask="255.255.255.0"> <dhcp> @@ -390,6 +391,17 @@ <span class="since">Since 0.9.3</span> </dd> </dl> + <dl> + <dt><code>srv</code></dt> + <dd>The <code>dns</code> element can have also 0 or more <code>srv</code> + record elements. Each <code>srv</code> record element defines a DNS SRV record + and has 2 mandatory and 5 optional attributes. The mandatory attributes + are service name and protocol (tcp, udp) and the optional attributes are + target, port, priority, weight and domain as defined in DNS server SRV + RFC (RFC 2782). + <span class="since">Since 0.9.5</span> + </dd> + </dl> </dd> <dt><code>ip</code></dt> <dd>The <code>address</code> attribute defines an IPv4 address in diff --git a/docs/schemas/network.rng b/docs/schemas/network.rng index 1c44471..dae2799 100644 --- a/docs/schemas/network.rng +++ b/docs/schemas/network.rng @@ -138,6 +138,19 @@ </element> </zeroOrMore> <zeroOrMore> + <element name="srv"> + <attribute name="service"><text/></attribute> + <attribute name="protocol"><ref name="protocol"/></attribute> + <optional> + <attribute name="domain"><ref name="dnsName"/></attribute> + <attribute name="target"><text/></attribute> + <attribute name="port"><ref name="unsignedShort"/></attribute> + <attribute name="priority"><ref name="unsignedShort"/></attribute> + <attribute name="weight"><ref name="unsignedShort"/></attribute> + </optional> + </element> + </zeroOrMore> + <zeroOrMore> <element name="host"> <attribute name="ip"><ref name="ipv4Addr"/></attribute> <oneOrMore> @@ -206,6 +219,19 @@ </element> </define> + <define name='unsignedShort'> + <data type='integer'> + <param name="minInclusive">0</param> + <param name="maxInclusive">65535</param> + </data> + </define> + + <define name='protocol'> + <data type='string'> + <param name='pattern'>(tcp)|(udp)</param> + </data> + </define> + <define name='addr-family'> <data type='string'> <param name="pattern">(ipv4)|(ipv6)</param> diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c index b11c482..517c4d6 100644 --- a/src/conf/network_conf.c +++ b/src/conf/network_conf.c @@ -137,6 +137,15 @@ static void virNetworkDNSDefFree(virNetworkDNSDefPtr def) } VIR_FREE(def->hosts); } + if (def->nsrvrecords) { + while (def->nsrvrecords--) { + VIR_FREE(def->srvrecords[def->nsrvrecords].domain); + VIR_FREE(def->srvrecords[def->nsrvrecords].service); + VIR_FREE(def->srvrecords[def->nsrvrecords].protocol); + VIR_FREE(def->srvrecords[def->nsrvrecords].target); + } + VIR_FREE(def->srvrecords); + } VIR_FREE(def); } } @@ -552,8 +561,99 @@ error: } static int +virNetworkDNSSrvDefParseXML(virNetworkDNSDefPtr def, + xmlNodePtr cur, + xmlXPathContextPtr ctxt) +{ + char *domain; + char *service; + char *protocol; + char *target; + int port; + int priority; + int weight; + int ret = 0; + char xpath[1024] = { 0 }; + + if (!(service = virXMLPropString(cur, "service"))) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + "%s", _("Missing required service attribute in dns srv record")); + goto error; + } + + if (strlen(service) > DNS_RECORD_LENGTH_SRV) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + "%s", _("Service name is too long, limit is %d bytes"), DNS_RECORD_LENGTH_SRV); + goto error; + } + + if (!(protocol = virXMLPropString(cur, "protocol"))) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + _("Missing required protocol attribute in dns srv record '%s'"), service); + goto error; + } + + /* Check whether protocol value is the supported one */ + if (STRNEQ(protocol, "tcp") && (STRNEQ(protocol, "udp"))) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + _("Invalid protocol attribute value '%s'"), protocol); + goto error; + } + + if (VIR_REALLOC_N(def->srvrecords, def->nsrvrecords + 1) < 0) { + virReportOOMError(); + goto error; + } + + def->srvrecords[def->nsrvrecords].service = service; + def->srvrecords[def->nsrvrecords].protocol = protocol; + def->srvrecords[def->nsrvrecords].domain = NULL; + def->srvrecords[def->nsrvrecords].target = NULL; + def->srvrecords[def->nsrvrecords].port = 0; + def->srvrecords[def->nsrvrecords].priority = 0; + def->srvrecords[def->nsrvrecords].weight = 0; + + /* Following attributes are optional but we had to make sure their NULL above */ + if ((target = virXMLPropString(cur, "target")) && (domain = virXMLPropString(cur, "domain"))) { + snprintf(xpath, sizeof(xpath), "string(//network/dns/srv[@service='%s']/@port)", service); + if (virXPathInt(xpath, ctxt, &port)) + def->srvrecords[def->nsrvrecords].port = port; + + snprintf(xpath, sizeof(xpath), "string(//network/dns/srv[@service='%s']/@priority)", service); + if (virXPathInt(xpath, ctxt, &priority)) + def->srvrecords[def->nsrvrecords].priority = priority; + + snprintf(xpath, sizeof(xpath), "string(//network/dns/srv[@service='%s']/@weight)", service); + if (virXPathInt(xpath, ctxt, &weight)) + def->srvrecords[def->nsrvrecords].weight = weight; + + def->srvrecords[def->nsrvrecords].domain = domain; + def->srvrecords[def->nsrvrecords].target = target; + def->srvrecords[def->nsrvrecords].port = port; + def->srvrecords[def->nsrvrecords].priority = priority; + def->srvrecords[def->nsrvrecords].weight = weight; + } + + def->nsrvrecords++; + + goto cleanup; + +error: + VIR_FREE(domain); + VIR_FREE(service); + VIR_FREE(protocol); + VIR_FREE(target); + + ret = 1; + +cleanup: + return ret; +} + +static int virNetworkDNSDefParseXML(virNetworkDNSDefPtr *dnsdef, - xmlNodePtr node) + xmlNodePtr node, + xmlXPathContextPtr ctxt) { xmlNodePtr cur; int ret = -1; @@ -598,6 +698,11 @@ virNetworkDNSDefParseXML(virNetworkDNSDefPtr *dnsdef, name = NULL; value = NULL; } else if (cur->type == XML_ELEMENT_NODE && + xmlStrEqual(cur->name, BAD_CAST "srv")) { + ret = virNetworkDNSSrvDefParseXML(def, cur, ctxt); + if (ret < 0) + goto error; + } else if (cur->type == XML_ELEMENT_NODE && xmlStrEqual(cur->name, BAD_CAST "host")) { ret = virNetworkDNSHostsDefParseXML(def, cur); if (ret < 0) @@ -888,7 +993,7 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt) dnsNode = virXPathNode("./dns", ctxt); if (dnsNode != NULL) { - if (virNetworkDNSDefParseXML(&def->dns, dnsNode) < 0) + if (virNetworkDNSDefParseXML(&def->dns, dnsNode, ctxt) < 0) goto error; } @@ -1147,6 +1252,27 @@ virNetworkDNSDefFormat(virBufferPtr buf, def->txtrecords[i].value); } + for (i = 0 ; i < def->nsrvrecords ; i++) { + if (def->srvrecords[i].service && def->srvrecords[i].protocol) { + virBufferAsprintf(buf, " <srv service='%s' protocol='%s' ", + def->srvrecords[i].service, + def->srvrecords[i].protocol); + + if (def->srvrecords[i].domain) + virBufferAsprintf(buf, "domain='%s' ", def->srvrecords[i].domain); + if (def->srvrecords[i].target) + virBufferAsprintf(buf, "target='%s' ", def->srvrecords[i].target); + if (def->srvrecords[i].port) + virBufferAsprintf(buf, "port='%d' ", def->srvrecords[i].port); + if (def->srvrecords[i].priority) + virBufferAsprintf(buf, "priority='%d' ", def->srvrecords[i].priority); + if (def->srvrecords[i].weight) + virBufferAsprintf(buf, "weight='%d' ", def->srvrecords[i].weight); + + virBufferAsprintf(buf, "/>\n"); + } + } + if (def->nhosts) { int ii, j; diff --git a/src/conf/network_conf.h b/src/conf/network_conf.h index 869085e..5f05a3a 100644 --- a/src/conf/network_conf.h +++ b/src/conf/network_conf.h @@ -24,6 +24,8 @@ #ifndef __NETWORK_CONF_H__ # define __NETWORK_CONF_H__ +#define DNS_RECORD_LENGTH_SRV (512 - 30) /* Limit minus overhead as mentioned in RFC-2782 */ + # include <libxml/parser.h> # include <libxml/tree.h> # include <libxml/xpath.h> @@ -67,6 +69,18 @@ struct _virNetworkDNSTxtRecordsDef { char *value; }; +typedef struct _virNetworkDNSSrvRecordsDef virNetworkDNSSrvRecordsDef; +typedef virNetworkDNSSrvRecordsDef *virNetworkDNSSrvRecordsDefPtr; +struct _virNetworkDNSSrvRecordsDef { + char *domain; + char *service; + char *protocol; + char *target; + int port; + int priority; + int weight; +}; + struct _virNetworkDNSHostsDef { virSocketAddr ip; int nnames; @@ -80,6 +94,8 @@ struct _virNetworkDNSDef { virNetworkDNSTxtRecordsDefPtr txtrecords; unsigned int nhosts; virNetworkDNSHostsDefPtr hosts; + unsigned int nsrvrecords; + virNetworkDNSSrvRecordsDefPtr srvrecords; }; typedef struct _virNetworkDNSDef *virNetworkDNSDefPtr; diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c index c90db63..f4d952f 100644 --- a/src/network/bridge_driver.c +++ b/src/network/bridge_driver.c @@ -559,6 +559,49 @@ networkBuildDnsmasqArgv(virNetworkObjPtr network, virCommandAddArgPair(cmd, "--txt-record", record); VIR_FREE(record); } + + for (i = 0; i < dns->nsrvrecords; i++) { + char *record = NULL; + char *recordPort = NULL; + char *recordPriority = NULL; + char *recordWeight = NULL; + + if (dns->srvrecords[i].service && dns->srvrecords[i].protocol) { + if (dns->srvrecords[i].port) { + if (virAsprintf(&recordPort, "%d", dns->srvrecords[i].port) < 0) { + virReportOOMError(); + goto cleanup; + } + } + if (dns->srvrecords[i].priority) { + if (virAsprintf(&recordPriority, "%d", dns->srvrecords[i].priority) < 0) { + virReportOOMError(); + goto cleanup; + } + } + if (dns->srvrecords[i].weight) { + if (virAsprintf(&recordWeight, "%d", dns->srvrecords[i].weight) < 0) { + virReportOOMError(); + goto cleanup; + } + } + + if (virAsprintf(&record, "%s.%s.%s,%s,%s,%s,%s", + dns->srvrecords[i].service, + dns->srvrecords[i].protocol, + dns->srvrecords[i].domain ? dns->srvrecords[i].domain : "", + dns->srvrecords[i].target ? dns->srvrecords[i].target : "", + recordPort ? recordPort : "", + recordPriority ? recordPriority : "", + recordWeight ? recordWeight : "") < 0) { + virReportOOMError(); + goto cleanup; + } + + virCommandAddArgPair(cmd, "--srv-host", record); + VIR_FREE(record); + } + } } /* diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv new file mode 100644 index 0000000..174f751 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv @@ -0,0 +1 @@ +/usr/sbin/dnsmasq --strict-order --bind-interfaces --conf-file= --except-interface lo --srv-host=name.tcp.,,,, --listen-address 192.168.122.1 --listen-address 192.168.123.1 --listen-address 2001:db8:ac10:fe01::1 --listen-address 2001:db8:ac10:fd01::1 --listen-address 10.24.10.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override --dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile \ No newline at end of file diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml new file mode 100644 index 0000000..e9b7680 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record.argv b/tests/networkxml2argvdata/nat-network-dns-srv-record.argv new file mode 100644 index 0000000..2ea9809 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record.argv @@ -0,0 +1 @@ +/usr/sbin/dnsmasq --strict-order --bind-interfaces --conf-file= --except-interface lo --srv-host=name.tcp.test-domain-name,.,1024,10,10 --listen-address 192.168.122.1 --listen-address 192.168.123.1 --listen-address 2001:db8:ac10:fe01::1 --listen-address 2001:db8:ac10:fd01::1 --listen-address 10.24.10.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override --dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile \ No newline at end of file diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record.xml b/tests/networkxml2argvdata/nat-network-dns-srv-record.xml new file mode 100644 index 0000000..4be85b5 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2argvtest.c b/tests/networkxml2argvtest.c index 4a11d6f..2dd9b7f 100644 --- a/tests/networkxml2argvtest.c +++ b/tests/networkxml2argvtest.c @@ -120,6 +120,8 @@ mymain(void) DO_TEST("netboot-network"); DO_TEST("netboot-proxy-network"); DO_TEST("nat-network-dns-txt-record"); + DO_TEST("nat-network-dns-srv-record"); + DO_TEST("nat-network-dns-srv-record-minimal"); DO_TEST("nat-network-dns-hosts"); return (ret==0 ? EXIT_SUCCESS : EXIT_FAILURE); diff --git a/tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml b/tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml new file mode 100644 index 0000000..e9b7680 --- /dev/null +++ b/tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmlin/nat-network-dns-srv-record.xml b/tests/networkxml2xmlin/nat-network-dns-srv-record.xml new file mode 100644 index 0000000..4be85b5 --- /dev/null +++ b/tests/networkxml2xmlin/nat-network-dns-srv-record.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml b/tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml new file mode 100644 index 0000000..e9b7680 --- /dev/null +++ b/tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmlout/nat-network-dns-srv-record.xml b/tests/networkxml2xmlout/nat-network-dns-srv-record.xml new file mode 100644 index 0000000..4be85b5 --- /dev/null +++ b/tests/networkxml2xmlout/nat-network-dns-srv-record.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmltest.c b/tests/networkxml2xmltest.c index 5cdbedb..b9f6546 100644 --- a/tests/networkxml2xmltest.c +++ b/tests/networkxml2xmltest.c @@ -87,6 +87,8 @@ mymain(void) DO_TEST("netboot-network"); DO_TEST("netboot-proxy-network"); DO_TEST("nat-network-dns-txt-record"); + DO_TEST("nat-network-dns-srv-record"); + DO_TEST("nat-network-dns-srv-record-minimal"); DO_TEST("nat-network-dns-hosts"); DO_TEST("8021Qbh-net"); DO_TEST("direct-net"); diff --git a/tests/schematestutils.sh b/tests/schematestutils.sh index f2b3b50..5fe85ce 100644 --- a/tests/schematestutils.sh +++ b/tests/schematestutils.sh @@ -20,6 +20,10 @@ do result=`$cmd 2>&1` ret=$? + if test "$ret" != "0"; then + xmllint --relaxng $SCHEMA $xml + fi + test_result $n $(basename $(dirname $xml))"/"$(basename $xml) $ret if test "$verbose" = "1" && test $ret != 0 ; then printf '%s\n' "$cmd" "$result" -- 1.7.4.4

1 0

[libvirt] [PATCH v2] Implement DNS SRV record into the bridge driver
by Michal Novotny 11 Aug '11

11 Aug '11

Hi, this is the second version of my patch to the bridge driver and libvirt XML file to include support for the SRV records in the DNS. The syntax is based on DNSMasq man page and tests for both xml2xml and xml2argv were added as well. Differences between v1 and v2: - A minor rewrite of integer parsing functionality - Extend tests to test with both minimal and full set of attributes - Check for service name length implemented Signed-off-by: Michal Novotny <minovotn(a)redhat.com> Signed-off-by: Michal Novotny <mignov(a)gmail.com> --- docs/formatnetwork.html.in | 12 ++ docs/schemas/network.rng | 26 ++++ src/conf/network_conf.c | 130 +++++++++++++++++++- src/conf/network_conf.h | 16 +++ src/network/bridge_driver.c | 43 +++++++ .../nat-network-dns-srv-record-minimal.argv | 1 + .../nat-network-dns-srv-record-minimal.xml | 26 ++++ .../nat-network-dns-srv-record.argv | 1 + .../nat-network-dns-srv-record.xml | 26 ++++ tests/networkxml2argvtest.c | 2 + .../nat-network-dns-srv-record-minimal.xml | 26 ++++ .../nat-network-dns-srv-record.xml | 26 ++++ .../nat-network-dns-srv-record-minimal.xml | 26 ++++ .../nat-network-dns-srv-record.xml | 26 ++++ tests/networkxml2xmltest.c | 2 + tests/schematestutils.sh | 4 + 16 files changed, 391 insertions(+), 2 deletions(-) create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record.argv create mode 100644 tests/networkxml2argvdata/nat-network-dns-srv-record.xml create mode 100644 tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml create mode 100644 tests/networkxml2xmlin/nat-network-dns-srv-record.xml create mode 100644 tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml create mode 100644 tests/networkxml2xmlout/nat-network-dns-srv-record.xml diff --git a/docs/formatnetwork.html.in b/docs/formatnetwork.html.in index 99031d0..51b1581 100644 --- a/docs/formatnetwork.html.in +++ b/docs/formatnetwork.html.in @@ -342,6 +342,7 @@ <mac address='00:16:3E:5D:C7:9E'/> <dns> <txt name="example" value="example value" /> + <srv service="name" protocol="tcp" domain="test-domain-name" target="." port="1024" priority="10" weight="10"/> </dns> <ip address="192.168.122.1" netmask="255.255.255.0"> <dhcp> @@ -390,6 +391,17 @@ <span class="since">Since 0.9.3</span> </dd> </dl> + <dl> + <dt><code>srv</code></dt> + <dd>The <code>dns</code> element can have also 0 or more <code>srv</code> + record elements. Each <code>srv</code> record element defines a DNS SRV record + and has 2 mandatory and 5 optional attributes. The mandatory attributes + are service name and protocol (tcp, udp) and the optional attributes are + target, port, priority, weight and domain as defined in DNS server SRV + RFC (RFC 2782). + <span class="since">Since 0.9.5</span> + </dd> + </dl> </dd> <dt><code>ip</code></dt> <dd>The <code>address</code> attribute defines an IPv4 address in diff --git a/docs/schemas/network.rng b/docs/schemas/network.rng index 1c44471..dae2799 100644 --- a/docs/schemas/network.rng +++ b/docs/schemas/network.rng @@ -138,6 +138,19 @@ </element> </zeroOrMore> <zeroOrMore> + <element name="srv"> + <attribute name="service"><text/></attribute> + <attribute name="protocol"><ref name="protocol"/></attribute> + <optional> + <attribute name="domain"><ref name="dnsName"/></attribute> + <attribute name="target"><text/></attribute> + <attribute name="port"><ref name="unsignedShort"/></attribute> + <attribute name="priority"><ref name="unsignedShort"/></attribute> + <attribute name="weight"><ref name="unsignedShort"/></attribute> + </optional> + </element> + </zeroOrMore> + <zeroOrMore> <element name="host"> <attribute name="ip"><ref name="ipv4Addr"/></attribute> <oneOrMore> @@ -206,6 +219,19 @@ </element> </define> + <define name='unsignedShort'> + <data type='integer'> + <param name="minInclusive">0</param> + <param name="maxInclusive">65535</param> + </data> + </define> + + <define name='protocol'> + <data type='string'> + <param name='pattern'>(tcp)|(udp)</param> + </data> + </define> + <define name='addr-family'> <data type='string'> <param name="pattern">(ipv4)|(ipv6)</param> diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c index b11c482..517c4d6 100644 --- a/src/conf/network_conf.c +++ b/src/conf/network_conf.c @@ -137,6 +137,15 @@ static void virNetworkDNSDefFree(virNetworkDNSDefPtr def) } VIR_FREE(def->hosts); } + if (def->nsrvrecords) { + while (def->nsrvrecords--) { + VIR_FREE(def->srvrecords[def->nsrvrecords].domain); + VIR_FREE(def->srvrecords[def->nsrvrecords].service); + VIR_FREE(def->srvrecords[def->nsrvrecords].protocol); + VIR_FREE(def->srvrecords[def->nsrvrecords].target); + } + VIR_FREE(def->srvrecords); + } VIR_FREE(def); } } @@ -552,8 +561,99 @@ error: } static int +virNetworkDNSSrvDefParseXML(virNetworkDNSDefPtr def, + xmlNodePtr cur, + xmlXPathContextPtr ctxt) +{ + char *domain; + char *service; + char *protocol; + char *target; + int port; + int priority; + int weight; + int ret = 0; + char xpath[1024] = { 0 }; + + if (!(service = virXMLPropString(cur, "service"))) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + "%s", _("Missing required service attribute in dns srv record")); + goto error; + } + + if (strlen(service) > DNS_RECORD_LENGTH_SRV) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + "%s", _("Service name is too long, limit is %d bytes"), DNS_RECORD_LENGTH_SRV); + goto error; + } + + if (!(protocol = virXMLPropString(cur, "protocol"))) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + _("Missing required protocol attribute in dns srv record '%s'"), service); + goto error; + } + + /* Check whether protocol value is the supported one */ + if (STRNEQ(protocol, "tcp") && (STRNEQ(protocol, "udp"))) { + virNetworkReportError(VIR_ERR_XML_DETAIL, + _("Invalid protocol attribute value '%s'"), protocol); + goto error; + } + + if (VIR_REALLOC_N(def->srvrecords, def->nsrvrecords + 1) < 0) { + virReportOOMError(); + goto error; + } + + def->srvrecords[def->nsrvrecords].service = service; + def->srvrecords[def->nsrvrecords].protocol = protocol; + def->srvrecords[def->nsrvrecords].domain = NULL; + def->srvrecords[def->nsrvrecords].target = NULL; + def->srvrecords[def->nsrvrecords].port = 0; + def->srvrecords[def->nsrvrecords].priority = 0; + def->srvrecords[def->nsrvrecords].weight = 0; + + /* Following attributes are optional but we had to make sure their NULL above */ + if ((target = virXMLPropString(cur, "target")) && (domain = virXMLPropString(cur, "domain"))) { + snprintf(xpath, sizeof(xpath), "string(//network/dns/srv[@service='%s']/@port)", service); + if (virXPathInt(xpath, ctxt, &port)) + def->srvrecords[def->nsrvrecords].port = port; + + snprintf(xpath, sizeof(xpath), "string(//network/dns/srv[@service='%s']/@priority)", service); + if (virXPathInt(xpath, ctxt, &priority)) + def->srvrecords[def->nsrvrecords].priority = priority; + + snprintf(xpath, sizeof(xpath), "string(//network/dns/srv[@service='%s']/@weight)", service); + if (virXPathInt(xpath, ctxt, &weight)) + def->srvrecords[def->nsrvrecords].weight = weight; + + def->srvrecords[def->nsrvrecords].domain = domain; + def->srvrecords[def->nsrvrecords].target = target; + def->srvrecords[def->nsrvrecords].port = port; + def->srvrecords[def->nsrvrecords].priority = priority; + def->srvrecords[def->nsrvrecords].weight = weight; + } + + def->nsrvrecords++; + + goto cleanup; + +error: + VIR_FREE(domain); + VIR_FREE(service); + VIR_FREE(protocol); + VIR_FREE(target); + + ret = 1; + +cleanup: + return ret; +} + +static int virNetworkDNSDefParseXML(virNetworkDNSDefPtr *dnsdef, - xmlNodePtr node) + xmlNodePtr node, + xmlXPathContextPtr ctxt) { xmlNodePtr cur; int ret = -1; @@ -598,6 +698,11 @@ virNetworkDNSDefParseXML(virNetworkDNSDefPtr *dnsdef, name = NULL; value = NULL; } else if (cur->type == XML_ELEMENT_NODE && + xmlStrEqual(cur->name, BAD_CAST "srv")) { + ret = virNetworkDNSSrvDefParseXML(def, cur, ctxt); + if (ret < 0) + goto error; + } else if (cur->type == XML_ELEMENT_NODE && xmlStrEqual(cur->name, BAD_CAST "host")) { ret = virNetworkDNSHostsDefParseXML(def, cur); if (ret < 0) @@ -888,7 +993,7 @@ virNetworkDefParseXML(xmlXPathContextPtr ctxt) dnsNode = virXPathNode("./dns", ctxt); if (dnsNode != NULL) { - if (virNetworkDNSDefParseXML(&def->dns, dnsNode) < 0) + if (virNetworkDNSDefParseXML(&def->dns, dnsNode, ctxt) < 0) goto error; } @@ -1147,6 +1252,27 @@ virNetworkDNSDefFormat(virBufferPtr buf, def->txtrecords[i].value); } + for (i = 0 ; i < def->nsrvrecords ; i++) { + if (def->srvrecords[i].service && def->srvrecords[i].protocol) { + virBufferAsprintf(buf, " <srv service='%s' protocol='%s' ", + def->srvrecords[i].service, + def->srvrecords[i].protocol); + + if (def->srvrecords[i].domain) + virBufferAsprintf(buf, "domain='%s' ", def->srvrecords[i].domain); + if (def->srvrecords[i].target) + virBufferAsprintf(buf, "target='%s' ", def->srvrecords[i].target); + if (def->srvrecords[i].port) + virBufferAsprintf(buf, "port='%d' ", def->srvrecords[i].port); + if (def->srvrecords[i].priority) + virBufferAsprintf(buf, "priority='%d' ", def->srvrecords[i].priority); + if (def->srvrecords[i].weight) + virBufferAsprintf(buf, "weight='%d' ", def->srvrecords[i].weight); + + virBufferAsprintf(buf, "/>\n"); + } + } + if (def->nhosts) { int ii, j; diff --git a/src/conf/network_conf.h b/src/conf/network_conf.h index 869085e..5f05a3a 100644 --- a/src/conf/network_conf.h +++ b/src/conf/network_conf.h @@ -24,6 +24,8 @@ #ifndef __NETWORK_CONF_H__ # define __NETWORK_CONF_H__ +#define DNS_RECORD_LENGTH_SRV (512 - 30) /* Limit minus overhead as mentioned in RFC-2782 */ + # include <libxml/parser.h> # include <libxml/tree.h> # include <libxml/xpath.h> @@ -67,6 +69,18 @@ struct _virNetworkDNSTxtRecordsDef { char *value; }; +typedef struct _virNetworkDNSSrvRecordsDef virNetworkDNSSrvRecordsDef; +typedef virNetworkDNSSrvRecordsDef *virNetworkDNSSrvRecordsDefPtr; +struct _virNetworkDNSSrvRecordsDef { + char *domain; + char *service; + char *protocol; + char *target; + int port; + int priority; + int weight; +}; + struct _virNetworkDNSHostsDef { virSocketAddr ip; int nnames; @@ -80,6 +94,8 @@ struct _virNetworkDNSDef { virNetworkDNSTxtRecordsDefPtr txtrecords; unsigned int nhosts; virNetworkDNSHostsDefPtr hosts; + unsigned int nsrvrecords; + virNetworkDNSSrvRecordsDefPtr srvrecords; }; typedef struct _virNetworkDNSDef *virNetworkDNSDefPtr; diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c index c90db63..f4d952f 100644 --- a/src/network/bridge_driver.c +++ b/src/network/bridge_driver.c @@ -559,6 +559,49 @@ networkBuildDnsmasqArgv(virNetworkObjPtr network, virCommandAddArgPair(cmd, "--txt-record", record); VIR_FREE(record); } + + for (i = 0; i < dns->nsrvrecords; i++) { + char *record = NULL; + char *recordPort = NULL; + char *recordPriority = NULL; + char *recordWeight = NULL; + + if (dns->srvrecords[i].service && dns->srvrecords[i].protocol) { + if (dns->srvrecords[i].port) { + if (virAsprintf(&recordPort, "%d", dns->srvrecords[i].port) < 0) { + virReportOOMError(); + goto cleanup; + } + } + if (dns->srvrecords[i].priority) { + if (virAsprintf(&recordPriority, "%d", dns->srvrecords[i].priority) < 0) { + virReportOOMError(); + goto cleanup; + } + } + if (dns->srvrecords[i].weight) { + if (virAsprintf(&recordWeight, "%d", dns->srvrecords[i].weight) < 0) { + virReportOOMError(); + goto cleanup; + } + } + + if (virAsprintf(&record, "%s.%s.%s,%s,%s,%s,%s", + dns->srvrecords[i].service, + dns->srvrecords[i].protocol, + dns->srvrecords[i].domain ? dns->srvrecords[i].domain : "", + dns->srvrecords[i].target ? dns->srvrecords[i].target : "", + recordPort ? recordPort : "", + recordPriority ? recordPriority : "", + recordWeight ? recordWeight : "") < 0) { + virReportOOMError(); + goto cleanup; + } + + virCommandAddArgPair(cmd, "--srv-host", record); + VIR_FREE(record); + } + } } /* diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv new file mode 100644 index 0000000..174f751 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.argv @@ -0,0 +1 @@ +/usr/sbin/dnsmasq --strict-order --bind-interfaces --conf-file= --except-interface lo --srv-host=name.tcp.,,,, --listen-address 192.168.122.1 --listen-address 192.168.123.1 --listen-address 2001:db8:ac10:fe01::1 --listen-address 2001:db8:ac10:fd01::1 --listen-address 10.24.10.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override --dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile \ No newline at end of file diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml new file mode 100644 index 0000000..e9b7680 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record-minimal.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record.argv b/tests/networkxml2argvdata/nat-network-dns-srv-record.argv new file mode 100644 index 0000000..2ea9809 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record.argv @@ -0,0 +1 @@ +/usr/sbin/dnsmasq --strict-order --bind-interfaces --conf-file= --except-interface lo --srv-host=name.tcp.test-domain-name,.,1024,10,10 --listen-address 192.168.122.1 --listen-address 192.168.123.1 --listen-address 2001:db8:ac10:fe01::1 --listen-address 2001:db8:ac10:fd01::1 --listen-address 10.24.10.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override --dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile \ No newline at end of file diff --git a/tests/networkxml2argvdata/nat-network-dns-srv-record.xml b/tests/networkxml2argvdata/nat-network-dns-srv-record.xml new file mode 100644 index 0000000..4be85b5 --- /dev/null +++ b/tests/networkxml2argvdata/nat-network-dns-srv-record.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2argvtest.c b/tests/networkxml2argvtest.c index 4a11d6f..2dd9b7f 100644 --- a/tests/networkxml2argvtest.c +++ b/tests/networkxml2argvtest.c @@ -120,6 +120,8 @@ mymain(void) DO_TEST("netboot-network"); DO_TEST("netboot-proxy-network"); DO_TEST("nat-network-dns-txt-record"); + DO_TEST("nat-network-dns-srv-record"); + DO_TEST("nat-network-dns-srv-record-minimal"); DO_TEST("nat-network-dns-hosts"); return (ret==0 ? EXIT_SUCCESS : EXIT_FAILURE); diff --git a/tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml b/tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml new file mode 100644 index 0000000..e9b7680 --- /dev/null +++ b/tests/networkxml2xmlin/nat-network-dns-srv-record-minimal.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmlin/nat-network-dns-srv-record.xml b/tests/networkxml2xmlin/nat-network-dns-srv-record.xml new file mode 100644 index 0000000..4be85b5 --- /dev/null +++ b/tests/networkxml2xmlin/nat-network-dns-srv-record.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml b/tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml new file mode 100644 index 0000000..e9b7680 --- /dev/null +++ b/tests/networkxml2xmlout/nat-network-dns-srv-record-minimal.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmlout/nat-network-dns-srv-record.xml b/tests/networkxml2xmlout/nat-network-dns-srv-record.xml new file mode 100644 index 0000000..4be85b5 --- /dev/null +++ b/tests/networkxml2xmlout/nat-network-dns-srv-record.xml @@ -0,0 +1,26 @@ +<network> + <name>default</name> + <uuid>81ff0d90-c91e-6742-64da-4a736edb9a9b</uuid> + <forward dev='eth1' mode='nat'> + <interface dev='eth1'/> + </forward> + <bridge name='virbr0' stp='on' delay='0' /> + <dns> + <srv service='name' protocol='tcp' domain='test-domain-name' target='.' port='1024' priority='10' weight='10' /> + </dns> + <ip address='192.168.122.1' netmask='255.255.255.0'> + <dhcp> + <range start='192.168.122.2' end='192.168.122.254' /> + <host mac='00:16:3e:77:e2:ed' name='a.example.com' ip='192.168.122.10' /> + <host mac='00:16:3e:3e:a9:1a' name='b.example.com' ip='192.168.122.11' /> + </dhcp> + </ip> + <ip family='ipv4' address='192.168.123.1' netmask='255.255.255.0'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fe01::1' prefix='64'> + </ip> + <ip family='ipv6' address='2001:db8:ac10:fd01::1' prefix='64'> + </ip> + <ip family='ipv4' address='10.24.10.1'> + </ip> +</network> diff --git a/tests/networkxml2xmltest.c b/tests/networkxml2xmltest.c index 5cdbedb..b9f6546 100644 --- a/tests/networkxml2xmltest.c +++ b/tests/networkxml2xmltest.c @@ -87,6 +87,8 @@ mymain(void) DO_TEST("netboot-network"); DO_TEST("netboot-proxy-network"); DO_TEST("nat-network-dns-txt-record"); + DO_TEST("nat-network-dns-srv-record"); + DO_TEST("nat-network-dns-srv-record-minimal"); DO_TEST("nat-network-dns-hosts"); DO_TEST("8021Qbh-net"); DO_TEST("direct-net"); diff --git a/tests/schematestutils.sh b/tests/schematestutils.sh index f2b3b50..5fe85ce 100644 --- a/tests/schematestutils.sh +++ b/tests/schematestutils.sh @@ -20,6 +20,10 @@ do result=`$cmd 2>&1` ret=$? + if test "$ret" != "0"; then + xmllint --relaxng $SCHEMA $xml + fi + test_result $n $(basename $(dirname $xml))"/"$(basename $xml) $ret if test "$verbose" = "1" && test $ret != 0 ; then printf '%s\n' "$cmd" "$result" -- 1.7.4.4

1 0

Re: [libvirt] [Qemu-devel] [PATCH v4] XBZRLE delta for live migration of large memory apps
by Anthony Liguori 11 Aug '11

11 Aug '11

On 08/10/2011 11:40 AM, Avi Kivity wrote: > On 08/10/2011 07:23 PM, Anthony Liguori wrote: >>> Right now we have capabilties in the form of -help output. >>> >>> If -help says >>> >>> -no-xzbrle disable xzbrle support >>> >>> (or -migration-compression xzbrle=off, or something) that's sufficient >>> for management tools. >> >> >> This is static, not dynamic. You may attempt to migrate to another >> host that supports it and then migrate to a second host that doesn't >> support it after the first migration fails. > > This may be acceptable, wait until the entire migration cluster is > xzbrle capable before enabling it. If not, add a monitor command. 1) xzbrle needs to be disabled by default. That way management tools don't unknowingly enable it by not passing -no-xzbrle. 2) there needs to be a mechanism for the management tool to query whether qemu supports xzbrle. 3) a management tool should be able to query the source and destination, and then enable xzbrle if both sides support it. You can argue that (3) could be static. A command could be added to toggle it dynamically through the monitor. But no matter what, someone has to touch libvirt and any other tool that works with QEMU to make this thing work. But this is a general problem. Any optional change to the migration protocol has exactly the same characteristics whether it's XZBRLE, XZBRLE v2 (if there is a v2), ASN.1, or any other form of compression that rolls around. Instead of teaching management tools how to deal with all of these things, let's just fix this problem once. It just takes: a) A query-migration-caps command that returns a dict with two lists of strings. Something like: { 'execute': 'query-migration-caps' } { 'return' : { 'capabilities': [ 'xbzrle' ], 'current': [] } } b) A set-migration-caps command that takes a list of strings. It simply takes the intersection of the capabilities set with the argument and sets the current set to the result. Something like: { 'execute': 'set-migration-caps', 'arguments': { 'set': [ 'xbzrle' ] }} { 'return' : {} } c) An internal interface to register a capability and an internal interface to check if a capability is currently enabled. The xzbrle code just needs to disable itself if the capability isn't set. Then we teach libvirt (and other tools) to query the caps list on the source, set the destination, query the current set on the destination, and then set that set on the source. As we introduce new things, like the next great compression protocol, or ASN.1, we don't need to touch libvirt again. libvirt can still know about the caps and selectively override QEMU if it's so inclined but it prevents us from reinventing the same mechanisms over and over again. >>> We shouldn't block this feature just because some monitor facility is >>> not yet implemented. >> >> We shouldn't make *any* changes to the migration protocol before we >> have a feature negotiation capability. I only want to do a hard break >> of the protocol once. > > Didn't we agree that management tool mediated feature negotiation (that > is, outside the migration protocol itself) is acceptable? Yes. But that negotiation needs to become part of the "protocol" for migration. In the absence of that negotiation, we need to use the wire protocol we use today. We cannot have ad-hoc feature negotiation for every change we make to the wire protocol. Regards, Anthony Liguori >

4 7

[libvirt] [PATCH] nwfilter: tolerate disappearing interfaces while instantiating filter
by Stefan Berger 11 Aug '11

11 Aug '11

When instantiating a filter, a VM may disappear and remove its tap interfaces. Tolerate this case and don't report an error. Signed-off-by: Stefan Berger <stefanb(a)linux.vnet.ibm.com> --- src/nwfilter/nwfilter_gentech_driver.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) Index: libvirt-acl/src/nwfilter/nwfilter_gentech_driver.c =================================================================== --- libvirt-acl.orig/src/nwfilter/nwfilter_gentech_driver.c +++ libvirt-acl/src/nwfilter/nwfilter_gentech_driver.c @@ -898,11 +898,18 @@ _virNWFilterInstantiateFilter(virConnect int ifindex; int rc; - if (ifaceGetIndex(true, net->ifname, &ifindex) < 0) - return 1; - virNWFilterLockFilterUpdates(); + /* after grabbing the filter update lock check for the interface; if + it's not there anymore its filters will be or are being removed + (while holding the lock) and we don't want to build new ones */ + if (ifaceGetIndex(false, net->ifname, &ifindex) < 0) { + /* interfaces / VMs can disappear during filter instantiation; + don't mark it as an error */ + rc = 0; + goto exit; + } + rc = __virNWFilterInstantiateFilter(conn, teardownOld, net->ifname, @@ -917,6 +924,7 @@ _virNWFilterInstantiateFilter(virConnect false, foundNewFilter); +exit: virNWFilterUnlockFilterUpdates(); return rc;

2 2

[libvirt] [PATCH] network: eliminate potential memory leak on parse failure
by Laine Stump 10 Aug '11

10 Aug '11

While the first encountered dns host record is being parsed, it's possible for virNetworkDef::hosts to point to memory that has been allocated, but virNetworkDef::nhosts to still be 0. If there is a failure during that time, virNetworkDef::hosts will be leaked. Although this isn't currently the case for virNetworkDef::txtrecords, it could become that way through future re-factoring, and it hurts nothing to restructure the freeing of txtrecord data to match that of hosts data. --- src/conf/network_conf.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c index b11c482..e055094 100644 --- a/src/conf/network_conf.c +++ b/src/conf/network_conf.c @@ -127,16 +127,16 @@ static void virNetworkDNSDefFree(virNetworkDNSDefPtr def) VIR_FREE(def->txtrecords[def->ntxtrecords].name); VIR_FREE(def->txtrecords[def->ntxtrecords].value); } - VIR_FREE(def->txtrecords); } + VIR_FREE(def->txtrecords); if (def->nhosts) { while (def->nhosts--) { while (def->hosts[def->nhosts].nnames--) VIR_FREE(def->hosts[def->nhosts].names[def->hosts[def->nhosts].nnames]); VIR_FREE(def->hosts[def->nhosts].names); } - VIR_FREE(def->hosts); } + VIR_FREE(def->hosts); VIR_FREE(def); } } -- 1.7.3.4

2 1

[libvirt] [PATCH] docs: use IPv6 addresses in range reserved for documentation
by Laine Stump 10 Aug '11

10 Aug '11

Pushed under the trivial rule. Someone in an IRC channel or an email pointed out a few days ago that the examples of IPv6 addresses in the libvirt documentation were not in the officially reserved "documentation" range. This addresses their concern. --- docs/formatnetwork.html.in | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) diff --git a/docs/formatnetwork.html.in b/docs/formatnetwork.html.in index 9e1cb22..99031d0 100644 --- a/docs/formatnetwork.html.in +++ b/docs/formatnetwork.html.in @@ -350,7 +350,7 @@ <host mac="00:16:3e:3e:a9:1a" name="bar.example.com" ip="192.168.122.11" /> </dhcp> </ip> - <ip family="ipv6" address="2001:8794:ca2:2::1" prefix="64" /> + <ip family="ipv6" address="2001:db8:ca2:2::1" prefix="64" /> </network></pre> <dl> @@ -490,7 +490,7 @@ <range start="192.168.122.2" end="192.168.122.254" /> </dhcp> </ip> - <ip family="ipv6" address="2001:8794:ca2:2::1" prefix="64" /> + <ip family="ipv6" address="2001:db8:ca2:2::1" prefix="64" /> </network></pre> <h3><a name="examplesRoute">Routed network config</a></h3> @@ -514,7 +514,7 @@ <range start="192.168.122.2" end="192.168.122.254" /> </dhcp> </ip> - <ip family="ipv6" address="2001:8794:ca2:2::1" prefix="64" /> + <ip family="ipv6" address="2001:db8:ca2:2::1" prefix="64" /> </network></pre> <h3><a name="examplesPrivate">Isolated network config</a></h3> @@ -536,7 +536,7 @@ <range start="192.168.152.2" end="192.168.152.254" /> </dhcp> </ip> - <ip family="ipv6" address="2001:8794:ca2:3::1" prefix="64" /> + <ip family="ipv6" address="2001:db8:ca2:3::1" prefix="64" /> </network></pre> <h3><a name="examplesBridge">Using an existing host bridge</a></h3> -- 1.7.3.4

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[libvirt] managedsave vs. transient domains
by Eric Blake 10 Aug '11

10 Aug '11

How in the world is managedsave supposed to work on transient domains? The moment you save a domain, the qemu process is ended; but ending the qemu process means that a transient domain no longer has any state tracked by libvirt. Should libvirt be temporarily defining a domain when creating a managedsave of a transient domain? Seeing as how persistent domains cannot be marked autostart, does this mean that you have to use 'virsh start dom' rather than autostart to restart a transient domain with managedsave state? Or should managedsave be prohibited on transient domains, and only exist as a possibility for persistent ones? After all, qemuDomainHasManagedSaveImage() will always return false for a running domain - a managed save state file only exists if you have shut down the domain into managed state file with plans to later start from that file. Personally, I'm leaning towards the latter - just like virDomainSetAutostart fails on transient domains, I think virDomainManagedSave should likewise fail on transient domains, and that applications that favor transient domains should also be managing state files themselves, via virDomainSave[Flags], rather than relying on virDomainManagedSave. -- Eric Blake eblake(a)redhat.com +1-801-349-2682 Libvirt virtualization library http://libvirt.org

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