ref: 082f1a3a980c79b96009f413b72f65b791cc2352
dir: /libauthsrv/authdial.c/
#include <u.h> #include <libc.h> #include <authsrv.h> #include <bio.h> #include <ndb.h> int authdial(char *netroot, char *dom) { Ndbtuple *t, *nt; char *p; int rv; if(dom == nil) /* look for one relative to my machine */ return dial(netmkaddr("$auth", netroot, "ticket"), 0, 0, 0); /* look up an auth server in an authentication domain */ p = csgetvalue(netroot, "authdom", dom, "auth", &t); /* if that didn't work, just try the IP domain */ if(p == nil) p = csgetvalue(netroot, "dom", dom, "auth", &t); /* * if that didn't work, try p9auth.$dom. this is very helpful if * you can't edit /lib/ndb. */ if(p == nil) { p = smprint("p9auth.%s", dom); t = ndbnew("auth", p); } free(p); /* * allow multiple auth= attributes for backup auth servers, * try each one in order. */ rv = -1; for(nt = t; nt != nil; nt = nt->entry) { if(strcmp(nt->attr, "auth") == 0) { p = netmkaddr(nt->val, netroot, "ticket"); rv = dial(p, 0, 0, 0); if(rv >= 0) break; } } ndbfree(t); return rv; }