123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201 |
- #include <u.h>
- #include <libc.h>
- #include <ctype.h>
- #include <ip.h>
- static Ipifc**
- _readoldipifc(char *buf, Ipifc **l, int index)
- {
- char *f[200];
- int i, n;
- Ipifc *ifc;
- Iplifc *lifc, **ll;
- /* allocate new interface */
- *l = ifc = mallocz(sizeof(Ipifc), 1);
- if(ifc == nil)
- return l;
- l = &ifc->next;
- ifc->index = index;
- n = tokenize(buf, f, nelem(f));
- if(n < 2)
- return l;
- strncpy(ifc->dev, f[0], sizeof ifc->dev);
- ifc->dev[sizeof(ifc->dev) - 1] = 0;
- ifc->mtu = strtoul(f[1], nil, 10);
- ll = &ifc->lifc;
- for(i = 2; n-i >= 7; i += 7){
- /* allocate new local address */
- *ll = lifc = mallocz(sizeof(Iplifc), 1);
- ll = &lifc->next;
- parseip(lifc->ip, f[i]);
- parseipmask(lifc->mask, f[i+1]);
- parseip(lifc->net, f[i+2]);
- ifc->pktin = strtoul(f[i+3], nil, 10);
- ifc->pktout = strtoul(f[i+4], nil, 10);
- ifc->errin = strtoul(f[i+5], nil, 10);
- ifc->errout = strtoul(f[i+6], nil, 10);
- }
- return l;
- }
- static char*
- findfield(char *name, char **f, int n)
- {
- int i;
- for(i = 0; i < n-1; i++)
- if(strcmp(f[i], name) == 0)
- return f[i+1];
- return "";
- }
- static Ipifc**
- _readipifc(char *file, Ipifc **l, int index)
- {
- int i, n, fd, lines;
- char buf[4*1024];
- char *line[32];
- char *f[64];
- Ipifc *ifc, **l0;
- Iplifc *lifc, **ll;
- /* read the file */
- fd = open(file, OREAD);
- if(fd < 0)
- return l;
- n = 0;
- while((i = read(fd, buf+n, sizeof(buf)-1-n)) > 0 && n < sizeof(buf) - 1)
- n += i;
- buf[n] = 0;
- close(fd);
- if(strncmp(buf, "device", 6) != 0)
- return _readoldipifc(buf, l, index);
- /* ignore ifcs with no associated device */
- if(strncmp(buf+6, " ", 2) == 0)
- return l;
- /* allocate new interface */
- *l = ifc = mallocz(sizeof(Ipifc), 1);
- if(ifc == nil)
- return l;
- l0 = l;
- l = &ifc->next;
- ifc->index = index;
- lines = getfields(buf, line, nelem(line), 1, "\n");
- /* pick off device specific info(first line) */
- n = tokenize(line[0], f, nelem(f));
- if(n%2 != 0)
- goto lose;
- strncpy(ifc->dev, findfield("device", f, n), sizeof(ifc->dev));
- ifc->dev[sizeof(ifc->dev)-1] = 0;
- if(ifc->dev[0] == 0){
- lose:
- free(ifc);
- *l0 = nil;
- return l;
- }
- ifc->mtu = strtoul(findfield("maxtu", f, n), nil, 10);
- ifc->sendra6 = atoi(findfield("sendra", f, n));
- ifc->recvra6 = atoi(findfield("recvra", f, n));
- ifc->rp.mflag = atoi(findfield("mflag", f, n));
- ifc->rp.oflag = atoi(findfield("oflag", f, n));
- ifc->rp.maxraint = atoi(findfield("maxraint", f, n));
- ifc->rp.minraint = atoi(findfield("minraint", f, n));
- ifc->rp.linkmtu = atoi(findfield("linkmtu", f, n));
- ifc->rp.reachtime = atoi(findfield("reachtime", f, n));
- ifc->rp.rxmitra = atoi(findfield("rxmitra", f, n));
- ifc->rp.ttl = atoi(findfield("ttl", f, n));
- ifc->rp.routerlt = atoi(findfield("routerlt", f, n));
- ifc->pktin = strtoul(findfield("pktin", f, n), nil, 10);
- ifc->pktout = strtoul(findfield("pktout", f, n), nil, 10);
- ifc->errin = strtoul(findfield("errin", f, n), nil, 10);
- ifc->errout = strtoul(findfield("errout", f, n), nil, 10);
- /* now read the addresses */
- ll = &ifc->lifc;
- for(i = 1; i < lines; i++){
- n = tokenize(line[i], f, nelem(f));
- if(n < 5)
- break;
- /* allocate new local address */
- *ll = lifc = mallocz(sizeof(Iplifc), 1);
- ll = &lifc->next;
- parseip(lifc->ip, f[0]);
- parseipmask(lifc->mask, f[1]);
- parseip(lifc->net, f[2]);
- lifc->validlt = strtoul(f[3], nil, 10);
- lifc->preflt = strtoul(f[4], nil, 10);
- }
- return l;
- }
- static void
- _freeifc(Ipifc *ifc)
- {
- Ipifc *next;
- Iplifc *lnext, *lifc;
- if(ifc == nil)
- return;
- for(; ifc; ifc = next){
- next = ifc->next;
- for(lifc = ifc->lifc; lifc; lifc = lnext){
- lnext = lifc->next;
- free(lifc);
- }
- free(ifc);
- }
- }
- Ipifc*
- readipifc(char *net, Ipifc *ifc, int index)
- {
- int fd, i, n;
- Dir *dir;
- char directory[128];
- char buf[128];
- Ipifc **l;
- _freeifc(ifc);
- l = &ifc;
- ifc = nil;
- if(net == 0)
- net = "/net";
- snprint(directory, sizeof(directory), "%s/ipifc", net);
- if(index >= 0){
- snprint(buf, sizeof(buf), "%s/%d/status", directory, index);
- _readipifc(buf, l, index);
- } else {
- fd = open(directory, OREAD);
- if(fd < 0)
- return nil;
- n = dirreadall(fd, &dir);
- close(fd);
- for(i = 0; i < n; i++){
- if(strcmp(dir[i].name, "clone") == 0)
- continue;
- if(strcmp(dir[i].name, "stats") == 0)
- continue;
- snprint(buf, sizeof(buf), "%s/%s/status", directory, dir[i].name);
- l = _readipifc(buf, l, atoi(dir[i].name));
- }
- free(dir);
- }
- return ifc;
- }
|