ref: 37e65b331bdf98f409be1bd2fbb55aec158c7877
dir: /sys/src/libndb/ndbgetipaddr.c/
#include <u.h> #include <libc.h> #include <bio.h> #include <ndb.h> #include <ip.h> /* return list of ip addresses for a name */ Ndbtuple* ndbgetipaddr(Ndb *db, char *val) { char *attr, *p; Ndbtuple *it, *first, *last, *next; Ndbs s; /* already an IP address? */ attr = ipattr(val); if(strcmp(attr, "ip") == 0){ it = ndbnew("ip", val); it->line = it; ndbsetmalloctag(it, getcallerpc(&db)); return it; } /* look it up */ p = ndbgetvalue(db, &s, attr, val, "ip", &it); if(p == nil) return nil; free(p); first = last = nil; do { /* remove the non-ip entries */ for(; it != nil; it = next){ next = it->entry; if(strcmp(it->attr, "ip") == 0){ if(first == nil) first = it; else { last->entry = it; last->line = it; } it->entry = nil; it->line = first; last = it; } else { it->entry = nil; ndbfree(it); } } } while((it = ndbsnext(&s, attr, val)) != nil); first = ndbdedup(first); ndbsetmalloctag(first, getcallerpc(&db)); return first; }