ref: 45ce4de65064ffb0e8b1904118cea7e16528cffa
dir: /sys/src/ape/lib/net/netmkaddr.c/
#include <stdlib.h> #include <sys/types.h> #include <string.h> #include <fcntl.h> #include <stdio.h> #include <unistd.h> #include <libnet.h> /* * make an address, add the defaults */ char * netmkaddr(char *linear, char *defnet, char *defsrv) { static char addr[256]; char *cp; /* * dump network name */ cp = strchr(linear, '!'); if(cp == 0){ if(defnet==0){ if(defsrv) snprintf(addr, sizeof(addr), "net!%s!%s", linear, defsrv); else snprintf(addr, sizeof(addr), "net!%s", linear); } else { if(defsrv) snprintf(addr, sizeof(addr), "%s!%s!%s", defnet, linear, defsrv); else snprintf(addr, sizeof(addr), "%s!%s", defnet, linear); } return addr; } /* * if there is already a service, use it */ cp = strchr(cp+1, '!'); if(cp) return linear; /* * add default service */ if(defsrv == 0) return linear; snprintf(addr, sizeof(addr), "%s!%s", linear, defsrv); return addr; }