Commit b25ab2e773 for qemu.org

commit b25ab2e77388001e60217128e404fe8f9fa051eb
Author: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Date:   Fri Mar 27 15:43:50 2026 +0200

    io: Use glib2 instead of strcasecmp/strncasecmp

    This is a change in semantics. g_ascii_strcasecmp() doesn't honour
    locale but strcasecmp() does. But this is OK for at least one reason:
     (1) QEMU always runs with the C locale so there's not an actual
         behaviour change here
     (2) we want the comparison data in HTTP header and it should be a plain
         ASCII one, not to do weird things with "I" in Turkish locales,
         so g_ascii_strcasecmp() is better as it's explicit about that

    Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
    Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
    Link: https://lore.kernel.org/r/20260327134401.270186-5-kkostiuk@redhat.com
    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/io/channel-websock.c b/io/channel-websock.c
index 9902b014f7..85b22a8822 100644
--- a/io/channel-websock.c
+++ b/io/channel-websock.c
@@ -457,7 +457,7 @@ static void qio_channel_websock_handshake_process(QIOChannelWebsock *ioc,
     connectionv = g_strsplit(connection, ",", 0);
     for (i = 0; connectionv != NULL && connectionv[i] != NULL; i++) {
         g_strstrip(connectionv[i]);
-        if (strcasecmp(connectionv[i],
+        if (g_ascii_strcasecmp(connectionv[i],
                        QIO_CHANNEL_WEBSOCK_CONNECTION_UPGRADE) == 0) {
             upgraded = true;
         }
@@ -468,7 +468,7 @@ static void qio_channel_websock_handshake_process(QIOChannelWebsock *ioc,
         goto bad_request;
     }

-    if (strcasecmp(upgrade, QIO_CHANNEL_WEBSOCK_UPGRADE_WEBSOCKET) != 0) {
+    if (g_ascii_strcasecmp(upgrade, QIO_CHANNEL_WEBSOCK_UPGRADE_WEBSOCKET) != 0) {
         error_setg(errp, "Incorrect upgrade method '%s'", upgrade);
         goto bad_request;
     }