ref: 2d4a2c5c2065a32b6b5bd6a0e887af1574a8dfec
dir: /sys/src/cmd/upas/send/gateway.c/
#include "common.h"
#include "send.h"
/*
* Translate the last component of the sender address. If the translation
* yields the same address, replace the sender with its last component.
*/
void
gateway(message *mp)
{
char *base;
String *s;
/* first remove all systems equivalent to us */
base = skipequiv(s_to_c(mp->sender));
if(base != s_to_c(mp->sender)){
s = mp->sender;
mp->sender = s_copy(base);
s_free(s);
}
}