[libvirt] [PATCH] Add env variable for debugging gnutls usage

[Daniel Veillard]

On Fri, May 07, 2010 at 01:43:24PM +0100, Daniel P. Berrange wrote:
> Allow debugging of GNUTLS interactions by setting
> 
>   LIBVIRT_GNUTLS_DEBUG=10 LIBVIRT_DEBUG=1 virsh
> 
> * src/remote/remote_driver.c: Use LIBVIRT_GNUTLS_DEBUG to
>   enable gnutls debugging
> ---
>  src/remote/remote_driver.c |   13 +++++++++++++
>  1 files changed, 13 insertions(+), 0 deletions(-)
> 
> diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c
> index 72cf292..9e90e5c 100644
> --- a/src/remote/remote_driver.c
> +++ b/src/remote/remote_driver.c
> @@ -1138,16 +1138,29 @@ check_cert_file(const char *type, const char *file)
>  }
>  
>  
> +static void remote_debug_gnutls_log(int level, const char* str) {
> +    DEBUG("%d %s", level, str);
> +}
> +
>  static int
>  initialize_gnutls(void)
>  {
>      static int initialized = 0;
>      int err;
> +    char *gnudebug;
>  
>      if (initialized) return 0;
>  
>      gnutls_global_init ();
>  
> +    if ((gnudebug = getenv("LIBVIRT_GNUTLS_DEBUG")) != NULL) {
> +        int val;
> +        if (virStrToLong_i(gnudebug, NULL, 10, &val) < 0)
> +            val = 10;
> +        gnutls_global_set_log_level(val);
> +        gnutls_global_set_log_function(remote_debug_gnutls_log);
> +    }
> +
>      /* X509 stuff */
>      err = gnutls_certificate_allocate_credentials (&x509_cred);
>      if (err) {

  ACK, useful !

Daniel

-- 
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