1 #include <u.h>
2 #include <libc.h>
3 #include <ctype.h>
4
5 /*
6 * make an address, add the defaults
7 */
8 char *
netmkaddr(char * linear,char * defnet,char * defsrv)9 netmkaddr(char *linear, char *defnet, char *defsrv)
10 {
11 static char addr[256];
12 char *cp;
13
14 /*
15 * dump network name
16 */
17 cp = strchr(linear, '!');
18 if(cp == 0){
19 if(defnet == 0)
20 defnet = "net";
21 /* allow unix sockets to omit unix! prefix */
22 if(access(linear, 0) >= 0){
23 snprint(addr, sizeof(addr), "unix!%s", linear);
24 return addr;
25 }
26 /* allow host:service in deference to Unix convention */
27 if((cp = strchr(linear, ':')) != nil){
28 snprint(addr, sizeof(addr), "%s!%.*s!%s",
29 defnet, utfnlen(linear, cp-linear),
30 linear, cp+1);
31 return addr;
32 }
33 if(defsrv)
34 snprint(addr, sizeof(addr), "%s!%s!%s",
35 defnet, linear, defsrv);
36 else
37 snprint(addr, sizeof(addr), "%s!%s", defnet, linear);
38 return addr;
39 }
40
41 /*
42 * if there is already a service, use it
43 */
44 cp = strchr(cp+1, '!');
45 if(cp)
46 return linear;
47
48 /*
49 * if the network is unix, no service
50 */
51 if(strncmp(linear, "unix!", 5) == 0)
52 return linear;
53
54 /*
55 * add default service
56 */
57 if(defsrv == 0)
58 return linear;
59
60 snprint(addr, sizeof(addr), "%s!%s", linear, defsrv);
61 return addr;
62 }
63