+static int str2addrport(char *str,
+ struct sockaddr *addr, socklen_t *addrlen) {
+ union {
+ struct sockaddr_in sin;
+ struct sockaddr_in6 sin6;
+ } si;
+
+ memset(&si,0,sizeof(si));
+
+ int af;
+ void *iav;
+ uint16_t *portp;
+ socklen_t al;
+ switch (str[strcspn(str,".:")]) {
+ case '.': af=AF_INET ; iav=&si.sin .sin_addr ; al=sizeof(si.sin ); portp=&si.sin .sin_port ; break;
+ case ':': af=AF_INET6; iav=&si.sin6.sin6_addr; al=sizeof(si.sin6); portp=&si.sin6.sin6_port; break;
+ default: errno=ESRCH; return -1;
+ }
+ si.sin.sin_family=af;
+
+ char *comma=strchr(str,',');
+ if (!comma) { errno=ESRCH; return -1; }
+ *comma++=0;
+ if (inet_pton(af,str,iav)) return -1;
+
+ char *ep;
+ errno=0;
+ unsigned long port=strtoul(comma,&ep,10);
+ if (ep==comma || *ep || errno || port>65536) { errno=ESRCH; return -1; }
+ *portp= htons(port);
+
+ if (addr) memcpy(addr,&si, *addrlen<al ? *addrlen : al);
+ *addrlen=al;
+ return 0;
+}
+