- char *argv[4];
- argv[0]=st->authbind;
- argv[1]=strdup("00000000");
- if (!argv[1]) exit(ENOMEM);
- argv[2]=alloca(8);
- if (!argv[2]) exit(ENOMEM);
- sprintf(argv[2],"%04X",htons(st->port));
- argv[3]=NULL;
- dup2(st->fd,0);
- execvp(st->authbind,argv);
- exit(ENOEXEC);
+ char *argv[5], addrstr[33], portstr[5];
+ const char *addrfam;
+ int port;
+ switch (addr->sa.sa_family) {
+ case AF_INET:
+ sprintf(addrstr,"%08lX",(long)addr->sin.sin_addr.s_addr);
+ port=addr->sin.sin_port;
+ addrfam=NULL;
+ break;
+#ifdef CONFIG_IPV6
+ case AF_INET6: {
+ int i;
+ for (i=0; i<16; i++)
+ sprintf(addrstr+i*2,"%02X",addr->sin6.sin6_addr.s6_addr[i]);
+ port=addr->sin6.sin6_port;
+ addrfam="6";
+ break;
+ }
+#endif /*CONFIG_IPV6*/
+ default:
+ fatal("udp (%s:%d): unsupported address family for authbind",
+ cc->loc.file,cc->loc.line);
+ }
+ sprintf(portstr,"%04X",port);
+ argv[0]=uc->authbind;
+ argv[1]=addrstr;
+ argv[2]=portstr;
+ argv[3]=(char*)addrfam;
+ argv[4]=NULL;
+ dup2(us->fd,0);
+ execvp(uc->authbind,argv);
+ _exit(255);
+ }
+ while (waitpid(c,&status,0)==-1) {
+ if (errno==EINTR) continue;
+ fatal_perror("udp (%s:%d): authbind",cc->loc.file,cc->loc.line);