Re: [PATCH] validate tcp port values

[Uri Lublin <uril@xxxxxxxxxx>]

Hi Peter,

On 07/16/2012 12:03 PM, Peter Hatina wrote:
> Review, please.

Looks good to me, ack.

Uri.

> ---
>   SpiceXPI/src/plugin/plugin.cpp |   31 +++++++++++++++++++++++++++++--
>   1 file changed, 29 insertions(+), 2 deletions(-)
>
> diff --git a/SpiceXPI/src/plugin/plugin.cpp b/SpiceXPI/src/plugin/plugin.cpp
> index b7f61ba..cb4bc8e 100644
> --- a/SpiceXPI/src/plugin/plugin.cpp
> +++ b/SpiceXPI/src/plugin/plugin.cpp
> @@ -106,6 +106,18 @@ namespace {
>
>           return dest;
>       }
> +
> +    // helper function for tcp/udp range conversion and validation
> +    static int portToInt(const std::string&port)
> +    {
> +        errno = 0;
> +        char *end;
> +        const long int min = 0;
> +        const long int max = 65535;
> +        long int conv = strtol(port.c_str(),&end, 10);
> +        return (errno || *end != '\0' || end == port.c_str() || conv<  min || conv>  max)
> +            ? -1 : static_cast<int>(conv);
> +    }
>   }
>
>   #ifdef NPAPI_USE_CONSTCHARS
> @@ -581,6 +593,19 @@ void nsPluginInstance::SendStr(uint32_t id, std::string str)
>
>   void nsPluginInstance::Connect()
>   {
> +    const int port = portToInt(m_port);
> +    const int sport = portToInt(m_secure_port);
> +    if (port<  0)
> +        g_warning("invalid port: '%s'", m_port.c_str());
> +    if (sport<  0)
> +        g_warning("invalid secure port: '%s'", m_secure_port.c_str());
> +    if (port<= 0&&  sport<= 0)
> +    {
> +        m_connected_status = 1;
> +        CallOnDisconnected(m_connected_status);
> +        return;
> +    }
> +
>       std::string socket_file(m_tmp_dir);
>       socket_file += "/spice-xpi";
>       if (setenv("SPICE_XPI_SOCKET", socket_file.c_str(), 1))
> @@ -678,8 +703,10 @@ void nsPluginInstance::Connect()
>
>           SendInit();
>           SendStr(CONTROLLER_HOST, m_host_ip);
> -        SendValue(CONTROLLER_PORT, atoi(m_port.c_str()));
> -        SendValue(CONTROLLER_SPORT, atoi(m_secure_port.c_str()));
> +        if (port>  0)
> +            SendValue(CONTROLLER_PORT, port);
> +        if (sport>  0)
> +            SendValue(CONTROLLER_SPORT, sport);
>           SendValue(CONTROLLER_FULL_SCREEN,
>                      (m_fullscreen == PR_TRUE ? CONTROLLER_SET_FULL_SCREEN : 0) |
>                      (m_admin_console == PR_FALSE ? CONTROLLER_AUTO_DISPLAY_RES : 0));

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