[Qemu-devel] [PATCH v2 3/5] spice-qemu-char: fix parameter checks for qemu_chr_parse_* functions

[zhanghailiang]

For functions qemu_chr_parse_spice_vmc and qemu_chr_parse_spice_port,
we should also check the length of parameter name, and it will help findind
the wrong configure, such as
'qemu-system-x86_64 -chardev spiceport(or spiceport),id=id,name='

Also remove the superfluous parameter checks in qemu_chr_open_spice_*

Signed-off-by: zhanghailiang <zhang.zhanghaili...@huawei.com>
---
 spice-qemu-char.c | 15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/spice-qemu-char.c b/spice-qemu-char.c
index 8106e06..48ee37f 100644
--- a/spice-qemu-char.c
+++ b/spice-qemu-char.c
@@ -290,11 +290,6 @@ CharDriverState *qemu_chr_open_spice_vmc(const char *type)
 {
     const char **psubtype = spice_server_char_device_recognized_subtypes();
 
-    if (type == NULL) {
-        fprintf(stderr, "spice-qemu-char: missing name parameter\n");
-        print_allowed_subtypes();
-        return NULL;
-    }
     for (; *psubtype != NULL; ++psubtype) {
         if (strcmp(type, *psubtype) == 0) {
             break;
@@ -315,11 +310,6 @@ CharDriverState *qemu_chr_open_spice_port(const char *name)
     CharDriverState *chr;
     SpiceCharDriver *s;
 
-    if (name == NULL) {
-        fprintf(stderr, "spice-qemu-char: missing name parameter\n");
-        return NULL;
-    }
-
     chr = chr_open("port", spice_port_set_fe_open);
     s = chr->opaque;
     s->sin.portname = g_strdup(name);
@@ -345,8 +335,9 @@ static void qemu_chr_parse_spice_vmc(QemuOpts *opts, 
ChardevBackend *backend,
 {
     const char *name = qemu_opt_get(opts, "name");
 
-    if (name == NULL) {
+    if (name == NULL || strlen(name) == 0) {
         error_setg(errp, "chardev: spice channel: no name given");
+        print_allowed_subtypes();
         return;
     }
     backend->spicevmc = g_new0(ChardevSpiceChannel, 1);
@@ -358,7 +349,7 @@ static void qemu_chr_parse_spice_port(QemuOpts *opts, 
ChardevBackend *backend,
 {
     const char *name = qemu_opt_get(opts, "name");
 
-    if (name == NULL) {
+    if (name == NULL || strlen(name) == 0) {
         error_setg(errp, "chardev: spice port: no name given");
         return;
     }
-- 
1.7.12.4