Re: [Qemu-devel] [PATCH 1/3] vnc: drop display+ws_display from VncDisplay

[Gonglei <arei.gonglei@huawei.com>]

On 2015/3/10 19:18, Gerd Hoffmann wrote:
> Nobody cares about those strings, they are only used to check whenever
> the vnc server / websocket support is enabled or not.  Add bools for
> this and drop the strings.
> 
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> ---
>  ui/vnc-auth-sasl.c |  2 +-
>  ui/vnc.c           | 54 +++++++++++++++++++++++-------------------------------
>  ui/vnc.h           |  6 +++---
>  3 files changed, 27 insertions(+), 35 deletions(-)
> 
Reviewed-by: Gonglei <arei.gonglei@huawei.com>

> diff --git a/ui/vnc-auth-sasl.c b/ui/vnc-auth-sasl.c
> index f3ad75d..2ddd259 100644
> --- a/ui/vnc-auth-sasl.c
> +++ b/ui/vnc-auth-sasl.c
> @@ -555,7 +555,7 @@ void start_auth_sasl(VncState *vs)
>  
>      memset (&secprops, 0, sizeof secprops);
>      /* Inform SASL that we've got an external SSF layer from TLS */
> -    if (strncmp(vs->vd->display, "unix:", 5) == 0
> +    if (vs->vd->is_unix
>  #ifdef CONFIG_VNC_TLS
>          /* Disable SSF, if using TLS+x509+SASL only. TLS without x509
>             is not sufficiently strong */
> diff --git a/ui/vnc.c b/ui/vnc.c
> index ff0b5bd..65ba1c0 100644
> --- a/ui/vnc.c
> +++ b/ui/vnc.c
> @@ -407,7 +407,7 @@ VncInfo *qmp_query_vnc(Error **errp)
>      VncInfo *info = g_malloc0(sizeof(*info));
>      VncDisplay *vd = vnc_display_find(NULL);
>  
> -    if (vd == NULL || vd->display == NULL) {
> +    if (vd == NULL || !vd->enabled) {
>          info->enabled = false;
>      } else {
>          struct sockaddr_storage sa;
> @@ -3190,16 +3190,15 @@ static void vnc_display_close(VncDisplay *vs)
>  {
>      if (!vs)
>          return;
> -    g_free(vs->display);
> -    vs->display = NULL;
> +    vs->enabled = false;
> +    vs->is_unix = false;
>      if (vs->lsock != -1) {
>          qemu_set_fd_handler2(vs->lsock, NULL, NULL, NULL, NULL);
>          close(vs->lsock);
>          vs->lsock = -1;
>      }
>  #ifdef CONFIG_VNC_WS
> -    g_free(vs->ws_display);
> -    vs->ws_display = NULL;
> +    vs->ws_enabled = false;
>      if (vs->lwebsock != -1) {
>          qemu_set_fd_handler2(vs->lwebsock, NULL, NULL, NULL, NULL);
>          close(vs->lwebsock);
> @@ -3329,7 +3328,7 @@ void vnc_display_open(const char *id, Error **errp)
>      bool reverse = false;
>      const char *vnc;
>      const char *has_to;
> -    char *display, *to = NULL;
> +    char *display, *ws_display = NULL, *to = NULL;
>      bool has_ipv4 = false;
>      bool has_ipv6 = false;
>  #ifdef CONFIG_VNC_WS
> @@ -3369,10 +3368,9 @@ void vnc_display_open(const char *id, Error **errp)
>      has_ipv4 = qemu_opt_get_bool(opts, "ipv4", false);
>      has_ipv6 = qemu_opt_get_bool(opts, "ipv6", false);
>      display = g_strdup_printf("%s%s%s%s", vnc,
> -                                  has_to ? to : "",
> -                                  has_ipv4 ? ",ipv4" : "",
> -                                  has_ipv6 ? ",ipv6" : "");
> -    vs->display = g_strdup(display);
> +                              has_to ? to : "",
> +                              has_ipv4 ? ",ipv4" : "",
> +                              has_ipv6 ? ",ipv6" : "");
>  
>      password = qemu_opt_get_bool(opts, "password", false);
>      if (password && fips_get_state()) {
> @@ -3427,7 +3425,7 @@ void vnc_display_open(const char *id, Error **errp)
>      if (websocket) {
>          /* extract the host specification from display */
>          char  *host = NULL, *host_end = NULL;
> -        vs->websocket = 1;
> +        vs->ws_enabled = true;
>  
>          /* ipv6 hosts have colons */
>          host_end = strrchr(display, ':');
> @@ -3436,7 +3434,7 @@ void vnc_display_open(const char *id, Error **errp)
>          } else {
>              host = g_strdup(":");
>          }
> -        vs->ws_display = g_strconcat(host, websocket, NULL);
> +        ws_display = g_strconcat(host, websocket, NULL);
>          g_free(host);
>      }
>  #endif /* CONFIG_VNC_WS */
> @@ -3618,34 +3616,29 @@ void vnc_display_open(const char *id, Error **errp)
>          vnc_connect(vs, csock, false, false);
>      } else {
>          /* listen for connects */
> -        char *dpy;
> -        dpy = g_malloc(256);
>          if (strncmp(display, "unix:", 5) == 0) {
> -            pstrcpy(dpy, 256, "unix:");
> -            vs->lsock = unix_listen(display+5, dpy+5, 256-5, errp);
> +            vs->lsock = unix_listen(display+5, NULL, 0, errp);
> +            vs->is_unix = true;
>          } else {
> -            vs->lsock = inet_listen(display, dpy, 256,
> +            vs->lsock = inet_listen(display, NULL, 0,
>                                      SOCK_STREAM, 5900, errp);
>              if (vs->lsock < 0) {
> -                g_free(dpy);
>                  goto fail;
>              }
>  #ifdef CONFIG_VNC_WS
> -            if (vs->websocket) {
> -                if (vs->ws_display) {
> -                    vs->lwebsock = inet_listen(vs->ws_display, NULL, 256,
> +            if (vs->ws_enabled) {
> +                if (ws_display) {
> +                    vs->lwebsock = inet_listen(ws_display, NULL, 0,
>                          SOCK_STREAM, 0, errp);
>                  } else {
> -                    vs->lwebsock = inet_listen(vs->display, NULL, 256,
> +                    vs->lwebsock = inet_listen(display, NULL, 0,
>                          SOCK_STREAM, 5700, errp);
>                  }
> -
>                  if (vs->lwebsock < 0) {
>                      if (vs->lsock) {
>                          close(vs->lsock);
>                          vs->lsock = -1;
>                      }
> -                    g_free(dpy);
>                      goto fail;
>                  }
>              }
> @@ -3653,12 +3646,12 @@ void vnc_display_open(const char *id, Error **errp)
>          }
>          g_free(to);
>          g_free(display);
> -        g_free(vs->display);
> -        vs->display = dpy;
> +        vs->enabled = true;
>          qemu_set_fd_handler2(vs->lsock, NULL,
>                  vnc_listen_regular_read, NULL, vs);
>  #ifdef CONFIG_VNC_WS
> -        if (vs->websocket) {
> +        g_free(ws_display);
> +        if (vs->ws_enabled) {
>              qemu_set_fd_handler2(vs->lwebsock, NULL,
>                      vnc_listen_websocket_read, NULL, vs);
>          }
> @@ -3669,11 +3662,10 @@ void vnc_display_open(const char *id, Error **errp)
>  fail:
>      g_free(to);
>      g_free(display);
> -    g_free(vs->display);
> -    vs->display = NULL;
> +    vs->enabled = false;
>  #ifdef CONFIG_VNC_WS
> -    g_free(vs->ws_display);
> -    vs->ws_display = NULL;
> +    g_free(ws_display);
> +    vs->ws_enabled = false;
>  #endif /* CONFIG_VNC_WS */
>  }
>  
> diff --git a/ui/vnc.h b/ui/vnc.h
> index 5e2b1a5..66a0298 100644
> --- a/ui/vnc.h
> +++ b/ui/vnc.h
> @@ -158,8 +158,7 @@ struct VncDisplay
>      int lsock;
>  #ifdef CONFIG_VNC_WS
>      int lwebsock;
> -    bool websocket;
> -    char *ws_display;
> +    bool ws_enabled;
>  #endif
>      DisplaySurface *ds;
>      DisplayChangeListener dcl;
> @@ -176,7 +175,8 @@ struct VncDisplay
>  
>      const char *id;
>      QTAILQ_ENTRY(VncDisplay) next;
> -    char *display;
> +    bool enabled;
> +    bool is_unix;
>      char *password;
>      time_t expires;
>      int auth;
>