[Qemu-devel] [RFC][PATCH v3 13/21] virtproxy: interfaces to set/remove VPIForwards

[Michael Roth <mdroth@linux.vnet.ibm.com>]

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 virtproxy.c |   59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 virtproxy.h |    2 ++
 2 files changed, 61 insertions(+), 0 deletions(-)

diff --git a/virtproxy.c b/virtproxy.c
index 01a36c2..b683ee6 100644
--- a/virtproxy.c
+++ b/virtproxy.c
@@ -722,3 +722,62 @@ int vp_set_oforward(VPDriver *drv, int fd, const char *service_id)
 
     return 0;
 }
+
+/* add/modify a service_id -> net/unix socket mapping
+ *
+ * "service_id" is a user-defined id for the service. this is what the
+ * remote end will use to proxy connections to a specific service on
+ * our end.
+ *
+ * if "port" is NULL, "addr" is the address of the net socket the
+ * service is running on. otherwise, addr is the path to the unix socket
+ * the service is running on.
+ *
+ * if "port" AND "addr" are NULL, find and remove the current iforward
+ * for this "service_id" if it exists.
+ *
+ * "ipv6" is a bool denoting whether or not to use ipv6
+ */
+int vp_set_iforward(VPDriver *drv, const char *service_id, const char *addr,
+                    const char *port, bool ipv6)
+{
+    VPIForward *f = get_iforward(drv, service_id);
+
+    if (addr == NULL && port == NULL) {
+        if (f != NULL) {
+            qemu_opts_del(f->socket_opts);
+            QLIST_REMOVE(f, next);
+            qemu_free(f);
+        }
+        return 0;
+    }
+
+    if (f == NULL) {
+        f = qemu_mallocz(sizeof(VPIForward));
+        f->drv = drv;
+        strncpy(f->service_id, service_id, VP_SERVICE_ID_LEN);
+        QLIST_INSERT_HEAD(&drv->iforwards, f, next);
+    } else {
+        qemu_opts_del(f->socket_opts);
+    }
+
+    /* stick socket-related options in a QemuOpts so we can
+     * utilize qemu socket utility functions directly
+     */
+    f->socket_opts = qemu_opts_create(&vp_socket_opts, NULL, 0);
+    if (port == NULL) {
+        /* no port given, assume unix path */
+        qemu_opt_set(f->socket_opts, "path", addr);
+    } else {
+        qemu_opt_set(f->socket_opts, "host", addr);
+        qemu_opt_set(f->socket_opts, "port", port);
+    }
+
+    if (ipv6) {
+        qemu_opt_set(f->socket_opts, "ipv6", "on");
+    } else {
+        qemu_opt_set(f->socket_opts, "ipv4", "on");
+    }
+
+    return 0;
+}
diff --git a/virtproxy.h b/virtproxy.h
index e901600..83cc905 100644
--- a/virtproxy.h
+++ b/virtproxy.h
@@ -41,5 +41,7 @@ void vp_chr_read(CharDriverState *s, uint8_t *buf, int len);
 VPDriver *vp_new(enum vp_context ctx, CharDriverState *s, int fd, bool listen);
 int vp_handle_packet_buf(VPDriver *drv, const void *buf, int count);
 int vp_set_oforward(VPDriver *drv, int fd, const char *service_id);
+int vp_set_iforward(VPDriver *drv, const char *service_id, const char *addr,
+                    const char *port, bool ipv6);
 
 #endif /* VIRTPROXY_H */
-- 
1.7.0.4