[OpenSER-Users-ES] ¿Es válido cambiar el From NAME en vez del From username?

[Iñaki Baz Castillo]

El Thursday 03 April 2008 08:03:37 Victor Pascual Ávila escribió:
> A 'secure connection' in this context means that messages cannot be
> read by third parties, cannot be modified by third parties without
> detection and that B can be sure that the message really did come from
> A.

O sea, no vale interné XD


> Fíjate que solo especifica requirements y NO se restringe al uso de un
> proto en concreto :-)

¡Cómo no! ¡¡¡cómo va el IETF a restringir/especificar algo en concreto!!! 
¡para qué decir las cosas claramente pudiendo hablar en abstracto y que cada 
implementador interprete lo que le salga de los catapli***!

Ah claro claro, entiendo... no se mojan en decir "debe ser TLS o IPSEC" no sea 
que se dejen en el tintero algún protocolo capa 3 completamente deprecated 
tipo IPX. Dios mío ¡¡¡compatibilidad hacia atrás!!!
¿Para qué hacer la gramática ABNF de SIP sencilla y fácil de parsear si 
podemos basarla en gramáticas de hace 20 años como el HTTP y SMTP con todos 
sus fallos de diseño y eficiencia por ser megapermisivos sin corregir NI UNO 
SOLO!!

PD: ¿A que se nota que estoy haciendo un parser SIP y estoy to' quemao? XDDD




PPD: Gramática RFC3261 de la cabecera "Via" [1] convertida a RegExp:
  [1] http://www.tech-invite.com/Ti-sip-abnf-hf.html#Via


HDR_VIA =
%r{(?:via|v)[\t\x20]*:(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?
   (?:sip|[!%'\x2a\x2b\x2d\x2e0-9_-z~]+)
   (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?/
   (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?[!%'\x2a\x2b\x2d\x2e0-9_-z~]+
   (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?/
   (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?
   (?:udp|tcp|tls|sctp|[!%'\x2a\x2b\x2d\x2e0-9_-z~]+)
   (?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+
   (?:(?:(?:[0-9a-z]|[0-9a-z][\x2d0-9a-z]*[0-9a-z])\x2e)*
      (?:[a-z]|[a-z][\x2d0-9a-z]*[0-9a-z])\x2e?|
      \d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3}|
      \x5b
      (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*|
         [0-9a-f]{1,4}(?::[0-9a-f]{1,4})*::
         (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?|
         ::(?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?)
      (?::\d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3})?\x5d)
   (?:(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?:
      (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?\d+)?
   (?:(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?;
      (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?
      (?:ttl(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?=
         (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?\d{1,3}|
         maddr(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?=
         (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?
         (?:(?:(?:[0-9a-z]|[0-9a-z][\x2d0-9a-z]*[0-9a-z])\x2e)*
            (?:[a-z]|[a-z][\x2d0-9a-z]*[0-9a-z])\x2e?|
            \d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3}|
            \x5b
            (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*|
               [0-9a-f]{1,4}(?::[0-9a-f]{1,4})*::
               (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?|
               ::(?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?)
            (?::\d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3})?\x5d)|
         received(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?=
         (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?
         (?:\d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3}|
            (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*|
               [0-9a-f]{1,4}(?::[0-9a-f]{1,4})*::
               (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?|
               ::(?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?)
            (?::\d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3})?)|
         branch(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?=
         (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?
         [!%'\x2a\x2b\x2d\x2e0-9_-z~]+|
         [!%'\x2a\x2b\x2d\x2e0-9_-z~]+
         (?:(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?=
            (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?
            (?:[!%'\x2a\x2b\x2d\x2e0-9_-z~]+|
               (?:(?:[0-9a-z]|[0-9a-z][\x2d0-9a-z]*[0-9a-z])\x2e)*
               (?:[a-z]|[a-z][\x2d0-9a-z]*[0-9a-z])\x2e?|
               \d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3}|
               \x5b
               (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*|
                  [0-9a-f]{1,4}(?::[0-9a-f]{1,4})*::
                  (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?|
                  ::(?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?)
               (?::\d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3})?\x5d|
               (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?"
               (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+|
                  [!\x23-@\x5b\x5d-~]|
                  [\xc0-\xdf][\x80-\xbf]|
                  [\xe0-\xef][\x80-\xbf]{2}|
                  [\xf0-\xf7][\x80-\xbf]{3}|
                  [\xf8-\xfb][\x80-\xbf]{4}|
                  [\xfc\xfd][\x80-\xbf]{5}|
                  [\x00-\t\v\f\x0e-@\x5b-\x7f])*"))?))*
   (?:(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?,
      (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?
      (?:sip|[!%'\x2a\x2b\x2d\x2e0-9_-z~]+)
      (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?/
      (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?[!%'\x2a\x2b\x2d\x2e0-9_-z~]+
      (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?/
      (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?
      (?:udp|tcp|tls|sctp|[!%'\x2a\x2b\x2d\x2e0-9_-z~]+)
      (?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+
      (?:(?:(?:[0-9a-z]|[0-9a-z][\x2d0-9a-z]*[0-9a-z])\x2e)*
         (?:[a-z]|[a-z][\x2d0-9a-z]*[0-9a-z])\x2e?|
         \d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3}|
         \x5b
         (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*|
            [0-9a-f]{1,4}(?::[0-9a-f]{1,4})*::
            (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?|
            ::(?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?)
         (?::\d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3})?\x5d)
      (?:(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?:
         (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?\d+)?
      (?:(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?;
         (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?
         (?:ttl(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?=
            (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?\d{1,3}|
            maddr(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?=
            (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?
            (?:(?:(?:[0-9a-z]|[0-9a-z][\x2d0-9a-z]*[0-9a-z])\x2e)*
               (?:[a-z]|[a-z][\x2d0-9a-z]*[0-9a-z])\x2e?|
               \d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3}|
               \x5b
               (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*|
                  [0-9a-f]{1,4}(?::[0-9a-f]{1,4})*::
                  (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?|
                  ::(?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?)
               (?::\d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3})?\x5d)|
            received(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?=
            (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?
            (?:\d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3}|
               (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*|
                  [0-9a-f]{1,4}(?::[0-9a-f]{1,4})*::
                  (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?|
                  ::(?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?)
               (?::\d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3})?)|
            branch(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?=
            (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?
            [!%'\x2a\x2b\x2d\x2e0-9_-z~]+|
            [!%'\x2a\x2b\x2d\x2e0-9_-z~]+
            (?:(?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?=
               (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?
               (?:[!%'\x2a\x2b\x2d\x2e0-9_-z~]+|
                  (?:(?:[0-9a-z]|[0-9a-z][\x2d0-9a-z]*[0-9a-z])\x2e)*
                  (?:[a-z]|[a-z][\x2d0-9a-z]*[0-9a-z])\x2e?|
                  \d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3}|
                  \x5b
                  (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*|
                     [0-9a-f]{1,4}(?::[0-9a-f]{1,4})*::
                     (?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?|
                     ::(?:[0-9a-f]{1,4}(?::[0-9a-f]{1,4})*)?)
                  (?::\d{1,3}\x2e\d{1,3}\x2e\d{1,3}\x2e\d{1,3})?\x5d|
                  (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+)?"
                  (?:(?:[\t\x20]*(?:\r\n|\r\n))?[\t\x20]+|
                     [!\x23-@\x5b\x5d-~]|
                     [\xc0-\xdf][\x80-\xbf]|
                     [\xe0-\xef][\x80-\xbf]{2}|
                     [\xf0-\xf7][\x80-\xbf]{3}|
                     [\xf8-\xfb][\x80-\xbf]{4}|
                     [\xfc\xfd][\x80-\xbf]{5}|
                     [\x00-\t\v\f\x0e-@\x5b-\x7f])*"))?))*)*}xi


Ala, senillita, eficiente y ligera. XDDD

Saludos.

-- 
Iñaki Baz Castillo
ibc at in.ilimit.es