[libvirt] [PATCH v2 1/4] virsocketaddr: return address family in virSocketAddrIsNumeric

[Chen Fan]

nowadays, virSocketAddrIsNumeric only validated the income address
if numeric, but sometimes we need to know whether the address is
an IPv4 or an IPv6 address.

Signed-off-by: Chen Fan <chen.fan.fnst at cn.fujitsu.com>
---
 src/qemu/qemu_migration.c |  4 ++--
 src/util/virsocketaddr.c  | 13 +++++++++----
 src/util/virsocketaddr.h  |  2 +-
 tests/sockettest.c        |  2 +-
 4 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c
index ce1a5cd..155f5b9 100644
--- a/src/qemu/qemu_migration.c
+++ b/src/qemu/qemu_migration.c
@@ -2565,7 +2565,7 @@ qemuMigrationPrepareAny(virQEMUDriverPtr driver,
         virObjectUnref(qemuCaps);
 
         if (listenAddress) {
-            if (virSocketAddrIsNumeric(listenAddress)) {
+            if (virSocketAddrIsNumeric(listenAddress, NULL)) {
                 /* listenAddress is numeric IPv4 or IPv6 */
                 if (virSocketAddrParse(&listenAddressSocket, listenAddress, AF_UNSPEC) < 0)
                     goto cleanup;
@@ -2850,7 +2850,7 @@ qemuMigrationPrepareDirect(virQEMUDriverPtr driver,
             goto cleanup;
 
         if (migrateHost != NULL) {
-            if (virSocketAddrIsNumeric(migrateHost) &&
+            if (virSocketAddrIsNumeric(migrateHost, NULL) &&
                 virSocketAddrParse(NULL, migrateHost, AF_UNSPEC) < 0)
                 goto cleanup;
 
diff --git a/src/util/virsocketaddr.c b/src/util/virsocketaddr.c
index 7cc4bde..64409a6 100644
--- a/src/util/virsocketaddr.c
+++ b/src/util/virsocketaddr.c
@@ -858,6 +858,7 @@ virSocketAddrGetIpPrefix(const virSocketAddr *address,
 /**
  * virSocketAddrIsNumeric:
  * @address: address to check
+ * @family: where to store the address family, optional.
  *
  * Check if passed address is an IP address in numeric format. For
  * instance, for 0.0.0.0 true is returned, for 'examplehost"
@@ -867,15 +868,19 @@ virSocketAddrGetIpPrefix(const virSocketAddr *address,
  *          false otherwise
  */
 bool
-virSocketAddrIsNumeric(const char *address)
+virSocketAddrIsNumeric(const char *address, int *family)
 {
     struct addrinfo *res;
-    unsigned short family;
+    unsigned short sa_family;
 
     if (virSocketAddrParseInternal(&res, address, AF_UNSPEC, false) < 0)
         return false;
 
-    family = res->ai_addr->sa_family;
+    sa_family = res->ai_addr->sa_family;
     freeaddrinfo(res);
-    return family == AF_INET || family == AF_INET6;
+
+    if (family != NULL) {
+        *family = sa_family;
+    }
+    return sa_family == AF_INET || sa_family == AF_INET6;
 }
diff --git a/src/util/virsocketaddr.h b/src/util/virsocketaddr.h
index 27defa0..7b11afb 100644
--- a/src/util/virsocketaddr.h
+++ b/src/util/virsocketaddr.h
@@ -125,5 +125,5 @@ bool virSocketAddrIsPrivate(const virSocketAddr *addr);
 
 bool virSocketAddrIsWildcard(const virSocketAddr *addr);
 
-bool virSocketAddrIsNumeric(const char *address);
+bool virSocketAddrIsNumeric(const char *address, int *family);
 #endif /* __VIR_SOCKETADDR_H__ */
diff --git a/tests/sockettest.c b/tests/sockettest.c
index 68b0536..dde0bb8 100644
--- a/tests/sockettest.c
+++ b/tests/sockettest.c
@@ -229,7 +229,7 @@ testIsNumericHelper(const void *opaque)
 {
     const struct testIsNumericData *data = opaque;
 
-    if (virSocketAddrIsNumeric(data->addr))
+    if (virSocketAddrIsNumeric(data->addr, NULL))
         return data->pass ? 0 : -1;
     return data->pass ? -1 : 0;
 }
-- 
1.9.3