[PATCH v2 1/6] qemu: command: Rename and move qemuNetworkDriveGetPort

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Move it to virstring.c and improve it to parse and validate ports. New
name is virStringParsePort.
---
 src/libvirt_private.syms |  1 +
 src/qemu/qemu_command.c  | 18 +-----------------
 src/util/virstring.c     | 37 +++++++++++++++++++++++++++++++++++++
 src/util/virstring.h     |  4 ++++
 4 files changed, 43 insertions(+), 17 deletions(-)

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 187b12b32..f0c2c8446 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -2656,6 +2656,7 @@ virStringListJoin;
 virStringListLength;
 virStringListRemove;
 virStringMatch;
+virStringParsePort;
 virStringReplace;
 virStringSearch;
 virStringSortCompare;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 6ac26af3e..be23796df 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -491,22 +491,6 @@ qemuSafeSerialParamValue(const char *value)
 }


-static int
-qemuNetworkDriveGetPort(const char *port)
-{
-    int ret = 0;
-
-    if (virStrToLong_i(port, NULL, 10, &ret) < 0 || ret < 0) {
-        virReportError(VIR_ERR_INTERNAL_ERROR,
-                       _("failed to parse port number '%s'"),
-                       port);
-        return -1;
-    }
-
-    return ret;
-}
-
-
 /**
  * qemuBuildSecretInfoProps:
  * @secinfo: pointer to the secret info object
@@ -825,7 +809,7 @@ qemuBuildNetworkDriveURI(virStorageSourcePtr src,
         goto cleanup;

     if (src->hosts->transport == VIR_STORAGE_NET_HOST_TRANS_TCP) {
-        if ((uri->port = qemuNetworkDriveGetPort(src->hosts->port)) < 0)
+        if (virStringParsePort(src->hosts->port, &uri->port) < 0)
             goto cleanup;

         if (VIR_STRDUP(uri->scheme,
diff --git a/src/util/virstring.c b/src/util/virstring.c
index 9b54bd6fb..fe61a3516 100644
--- a/src/util/virstring.c
+++ b/src/util/virstring.c
@@ -1344,3 +1344,40 @@ void virStringTrimOptionalNewline(char *str)
     if (*tmp == '\n')
         *tmp = '\0';
 }
+
+
+/**
+ * virStringParsePort:
+ * @str: port number to parse
+ * @port: pointer to parse port into
+ *
+ * Parses a string representation of a network port and validates it. Returns
+ * 0 on success and -1 on error.
+ */
+int
+virStringParsePort(const char *str,
+                   int *port)
+{
+    unsigned int p = 0;
+
+    *port = 0;
+
+    if (!str)
+        return 0;
+
+    if (virStrToLong_uip(str, NULL, 10, &p) < 0) {
+        virReportError(VIR_ERR_INVALID_ARG,
+                       _("failed to parse port number '%s'"), str);
+        return -1;
+    }
+
+    if (p > 65535) {
+        virReportError(VIR_ERR_INVALID_ARG,
+                       _("port '%s' out of range"), str);
+        return -1;
+    }
+
+    *port = p;
+
+    return 0;
+}
diff --git a/src/util/virstring.h b/src/util/virstring.h
index 5eaaaea0a..e562bf514 100644
--- a/src/util/virstring.h
+++ b/src/util/virstring.h
@@ -296,4 +296,8 @@ char *virStringEncodeBase64(const uint8_t *buf, size_t buflen);

 void virStringTrimOptionalNewline(char *str);

+int virStringParsePort(const char *str,
+                       int *port)
+    ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
+
 #endif /* __VIR_STRING_H__ */
-- 
2.13.2

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