ndb/cs: don't lookup AAAA records for IL, make sure translated address is IPv4 for IL, consistent use of nil vs. 0 for pointers
This commit is contained in:
cinap_lenrek
parent
58a0db935c
commit
75a8003a8a
1 changed files with 102 additions and 92 deletions
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@ -135,16 +135,16 @@ char netndb[Maxpath];
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/*
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* Network specific translators
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*/
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Ndbtuple* iplookup(Network*, char*, char*, int);
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Ndbtuple* iplookup(Network*, char*, char*);
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char* iptrans(Ndbtuple*, Network*, char*, char*, int);
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Ndbtuple* telcolookup(Network*, char*, char*, int);
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Ndbtuple* telcolookup(Network*, char*, char*);
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char* telcotrans(Ndbtuple*, Network*, char*, char*, int);
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Ndbtuple* dnsiplookup(char*, Ndbs*);
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Ndbtuple* dnsiplookup(char*, Ndbs*, int);
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struct Network
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{
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char *net;
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Ndbtuple *(*lookup)(Network*, char*, char*, int);
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Ndbtuple *(*lookup)(Network*, char*, char*);
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char *(*trans)(Ndbtuple*, Network*, char*, char*, int);
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int considered; /* flag: ignored for "net!"? */
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int fasttimeouthack; /* flag. was for IL */
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@ -341,7 +341,7 @@ ndbinit(void)
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if(db == nil)
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error("can't open network database");
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for(netdb = db; netdb; netdb = netdb->next)
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for(netdb = db; netdb != nil; netdb = netdb->next)
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if(strcmp(netdb->file, netndb) == 0)
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return;
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@ -358,13 +358,13 @@ newfid(int fid)
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Mlist *f, *ff;
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Mfile *mf;
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ff = 0;
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for(f = mlist; f; f = f->next)
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ff = nil;
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for(f = mlist; f != nil; f = f->next)
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if(f->mf.busy && f->mf.fid == fid)
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return &f->mf;
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else if(!ff && !f->mf.busy && !f->mf.ref)
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else if(ff == nil && !f->mf.busy && !f->mf.ref)
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ff = f;
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if(ff == 0){
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if(ff == nil){
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ff = emalloc(sizeof *f);
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ff->next = mlist;
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mlist = ff;
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@ -395,7 +395,7 @@ freejob(Job *job)
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Job **l;
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qlock(&joblock);
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for(l = &joblist; *l; l = &(*l)->next){
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for(l = &joblist; *l != nil; l = &(*l)->next){
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if((*l) == job){
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*l = job->next;
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break;
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@ -411,7 +411,7 @@ flushjob(int tag)
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Job *job;
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qlock(&joblock);
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for(job = joblist; job; job = job->next){
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for(job = joblist; job != nil; job = job->next){
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if(job->request.tag == tag && job->request.type != Tflush){
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job->flushed = 1;
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break;
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@ -531,7 +531,7 @@ rversion(Job *job)
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sendmsg(job, "unknown 9P version");
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else{
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job->reply.version = "9P2000";
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sendmsg(job, 0);
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sendmsg(job, nil);
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}
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}
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@ -548,7 +548,7 @@ void
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rflush(Job *job)
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{
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flushjob(job->request.oldtag);
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sendmsg(job, 0);
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sendmsg(job, nil);
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}
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void
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@ -562,7 +562,7 @@ rattach(Job *job, Mfile *mf)
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mf->qid.type = QTDIR;
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mf->qid.path = 0LL;
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job->reply.qid = mf->qid;
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sendmsg(job, 0);
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sendmsg(job, nil);
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}
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@ -576,7 +576,7 @@ rwalk(Job *job, Mfile *mf)
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Mfile *nmf;
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Qid qid;
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err = 0;
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err = nil;
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nmf = nil;
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elems = job->request.wname;
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nelems = job->request.nwname;
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@ -628,7 +628,7 @@ rwalk(Job *job, Mfile *mf)
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if(nmf != nil && (err!=nil || job->reply.nwqid<nelems)){
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cleanmf(nmf);
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free(nmf->user);
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nmf->user = 0;
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nmf->user = nil;
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nmf->busy = 0;
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nmf->fid = 0;
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}
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@ -644,7 +644,7 @@ ropen(Job *job, Mfile *mf)
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int mode;
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char *err;
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err = 0;
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err = nil;
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mode = job->request.mode;
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if(mf->qid.type & QTDIR){
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if(mode)
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@ -672,7 +672,7 @@ rread(Job *job, Mfile *mf)
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char *err;
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n = 0;
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err = 0;
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err = nil;
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off = job->request.offset;
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cnt = job->request.count;
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mf->ref++;
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@ -701,7 +701,7 @@ rread(Job *job, Mfile *mf)
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for(;;){
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/* look for an answer at the right offset */
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toff = 0;
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for(i = 0; mf->reply[i] && i < mf->nreply; i++){
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for(i = 0; mf->reply[i] != nil && i < mf->nreply; i++){
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n = mf->replylen[i];
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if(off < toff + n)
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break;
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@ -771,7 +771,7 @@ rwrite(Job *job, Mfile *mf)
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char *field[4];
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char curerr[64];
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err = 0;
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err = nil;
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cnt = job->request.count;
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if(mf->qid.type & QTDIR){
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err = "can't write directory";
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@ -898,10 +898,10 @@ rclunk(Job *job, Mfile *mf)
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if(mf->ref == 0)
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cleanmf(mf);
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free(mf->user);
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mf->user = 0;
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mf->user = nil;
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mf->fid = 0;
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mf->busy = 0;
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sendmsg(job, 0);
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sendmsg(job, nil);
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}
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void
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@ -933,7 +933,7 @@ rstat(Job *job, Mfile *mf)
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dir.atime = dir.mtime = time(0);
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job->reply.nstat = convD2M(&dir, buf, sizeof buf);
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job->reply.stat = buf;
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sendmsg(job, 0);
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sendmsg(job, nil);
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}
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void
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@ -1023,7 +1023,7 @@ ipid(void)
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char buf[Maxpath];
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/* use environment, ether addr, or ipaddr to get system name */
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if(mysysname == 0){
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if(mysysname == nil){
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/*
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* environment has priority.
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*
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@ -1032,7 +1032,7 @@ ipid(void)
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*
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*/
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p = getenv("sysname");
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if(p && *p){
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if(p != nil && *p){
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attr = ipattr(p);
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if(strcmp(attr, "ip") != 0)
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mysysname = estrdup(p);
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@ -1043,7 +1043,7 @@ ipid(void)
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* figured out from DHCP. use that name if
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* there is one.
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*/
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if(mysysname == 0 && netdb != nil){
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if(mysysname == nil && netdb != nil){
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ndbreopen(netdb);
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for(tt = t = ndbparse(netdb); t != nil; t = t->entry){
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if(strcmp(t->attr, "sys") == 0){
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@ -1055,7 +1055,7 @@ ipid(void)
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}
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/* next network database, ip address, and ether address to find a name */
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if(mysysname == 0){
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if(mysysname == nil){
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t = nil;
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if(isvalidip(ipa))
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free(ndbgetvalue(db, &s, "ip", ipaddr, "sys", &t));
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@ -1090,12 +1090,12 @@ ipid(void)
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}
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/* nothing else worked, use the ip address */
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if(mysysname == 0 && isvalidip(ipa))
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if(mysysname == nil && isvalidip(ipa))
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mysysname = estrdup(ipaddr);
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/* set /dev/sysname if we now know it */
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if(mysysname){
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if(mysysname != nil){
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f = open("/dev/sysname", OWRITE);
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if(f >= 0){
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write(f, mysysname, strlen(mysysname));
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@ -1127,18 +1127,18 @@ netinit(int background)
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}
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/* add the mounted networks to the default list */
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for(np = network; np->net; np++){
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for(np = network; np->net != nil; np++){
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if(np->considered)
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continue;
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snprint(clone, sizeof(clone), "%s/%s/clone", mntpt, np->net);
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if(access(clone, AEXIST) < 0)
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continue;
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if(netlist)
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if(netlist != nil)
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last->next = np;
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else
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netlist = np;
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last = np;
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np->next = 0;
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np->next = nil;
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np->considered = 1;
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}
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@ -1170,17 +1170,17 @@ netadd(char *p)
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n = getfields(p, field, 12, 1, " ");
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for(i = 0; i < n; i++){
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for(np = network; np->net; np++){
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for(np = network; np->net != nil; np++){
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if(strcmp(field[i], np->net) != 0)
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continue;
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if(np->considered)
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break;
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if(netlist)
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if(netlist != nil)
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last->next = np;
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else
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netlist = np;
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last = np;
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np->next = 0;
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np->next = nil;
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np->considered = 1;
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}
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}
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@ -1210,28 +1210,27 @@ lookup(Mfile *mf)
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int hack;
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/* open up the standard db files */
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if(db == 0)
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if(db == nil)
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ndbinit();
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if(db == 0)
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if(db == nil)
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error("can't open mf->network database\n");
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rv = 0;
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if(mf->net == nil)
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return 0; /* must have been a genquery */
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rv = 0;
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if(strcmp(mf->net, "net") == 0){
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/*
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* go through set of default nets
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*/
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for(np = mf->nextnet; np; np = np->next){
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nt = (*np->lookup)(np, mf->host, mf->serv, 1);
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for(np = mf->nextnet; np != nil && rv == 0; np = np->next){
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nt = (*np->lookup)(np, mf->host, mf->serv);
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if(nt == nil)
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continue;
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hack = np->fasttimeouthack && !lookforproto(nt, np->net);
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for(t = nt; mf->nreply < Nreply && t; t = t->entry){
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for(t = nt; mf->nreply < Nreply && t != nil; t = t->entry){
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cp = (*np->trans)(t, np, mf->serv, mf->rem, hack);
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if(cp){
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if(cp != nil){
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/* avoid duplicates */
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for(i = 0; i < mf->nreply; i++)
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if(strcmp(mf->reply[i], cp) == 0)
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@ -1246,8 +1245,6 @@ lookup(Mfile *mf)
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}
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}
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ndbfree(nt);
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np = np->next;
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break;
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}
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mf->nextnet = np;
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return rv;
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@ -1258,24 +1255,25 @@ lookup(Mfile *mf)
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*/
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if(mf->nreply != 0)
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return 0;
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/*
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* look for a specific network
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*/
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for(np = netlist; np && np->net != nil; np++){
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for(np = network; np->net != nil; np++){
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if(np->fasttimeouthack)
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continue;
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if(strcmp(np->net, mf->net) == 0)
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break;
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}
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if(np && np->net != nil){
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if(np->net != nil){
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/*
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* known network
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*/
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nt = (*np->lookup)(np, mf->host, mf->serv, 1);
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for(t = nt; mf->nreply < Nreply && t; t = t->entry){
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nt = (*np->lookup)(np, mf->host, mf->serv);
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for(t = nt; mf->nreply < Nreply && t != nil; t = t->entry){
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cp = (*np->trans)(t, np, mf->serv, mf->rem, 0);
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if(cp){
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if(cp != nil){
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mf->replylen[mf->nreply] = strlen(cp);
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mf->reply[mf->nreply++] = cp;
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rv++;
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@ -1287,7 +1285,7 @@ lookup(Mfile *mf)
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/*
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* not a known network, don't translate host or service
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*/
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if(mf->serv)
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if(mf->serv != nil)
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snprint(reply, sizeof(reply), "%s/%s/clone %s!%s",
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mntpt, mf->net, mf->host, mf->serv);
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else
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@ -1317,7 +1315,7 @@ ipserv(Network *np, char *name, char *buf, int blen)
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Ndbs s;
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/* '*' means any service */
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if(strcmp(name, "*")==0){
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if(strcmp(name, "*") == 0){
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nstrcpy(buf, name, blen);
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return buf;
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}
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@ -1330,14 +1328,14 @@ ipserv(Network *np, char *name, char *buf, int blen)
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else if(isalpha(*p) || *p == '-' || *p == '$')
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alpha = 1;
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else
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return 0;
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return nil;
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}
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t = nil;
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p = nil;
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if(alpha){
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p = ndbgetvalue(db, &s, np->net, name, "port", &t);
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if(p == nil)
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return 0;
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return nil;
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} else {
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/* look up only for tcp ports < 1024 to get the restricted
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* attribute
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@ -1349,7 +1347,7 @@ ipserv(Network *np, char *name, char *buf, int blen)
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}
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if(t){
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for(nt = t; nt; nt = nt->entry)
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for(nt = t; nt != nil; nt = nt->entry)
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if(strcmp(nt->attr, "restricted") == 0)
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restr = 1;
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ndbfree(t);
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@ -1391,7 +1389,7 @@ ipattrlookup(Ndb *db, char *ipa, char *attr, char *val, int vlen)
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* lookup (and translate) an ip destination
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*/
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Ndbtuple*
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iplookup(Network *np, char *host, char *serv, int nolookup)
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iplookup(Network *np, char *host, char *serv)
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{
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char *attr, *dnsname;
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Ndbtuple *t, *nt;
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@ -1403,17 +1401,16 @@ iplookup(Network *np, char *host, char *serv, int nolookup)
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uchar tnet[IPaddrlen];
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Ipifc *ifc;
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Iplifc *lifc;
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USED(nolookup);
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int v6;
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/*
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* start with the service since it's the most likely to fail
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* and costs the least
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*/
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werrstr("can't translate address");
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if(serv==0 || ipserv(np, serv, ts, sizeof ts) == 0){
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if(serv == nil || ipserv(np, serv, ts, sizeof ts) == nil){
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werrstr("can't translate service");
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return 0;
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return nil;
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}
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/* for dial strings with no host */
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@ -1463,21 +1460,22 @@ iplookup(Network *np, char *host, char *serv, int nolookup)
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*/
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t = 0;
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werrstr("can't translate address");
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v6 = strcmp(np->net, "il") != 0;
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if(strcmp(attr, "dom") == 0)
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t = dnsiplookup(host, &s);
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if(t == 0)
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t = dnsiplookup(host, &s, v6);
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if(t == nil)
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free(ndbgetvalue(db, &s, attr, host, "ip", &t));
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if(t == 0){
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if(t == nil){
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dnsname = ndbgetvalue(db, &s, attr, host, "dom", nil);
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if(dnsname){
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t = dnsiplookup(dnsname, &s);
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t = dnsiplookup(dnsname, &s, v6);
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free(dnsname);
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}
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}
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if(t == 0)
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t = dnsiplookup(host, &s);
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if(t == 0)
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return 0;
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if(t == nil)
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t = dnsiplookup(host, &s, v6);
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if(t == nil)
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return nil;
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/*
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* reorder the tuple to have the matched line first and
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@ -1510,6 +1508,13 @@ iplookup(Network *np, char *host, char *serv, int nolookup)
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return t;
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}
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static int
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isv4str(char *s)
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{
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uchar ip[IPaddrlen];
|
||||
return parseip(ip, s) != -1 && isv4(ip);
|
||||
}
|
||||
|
||||
/*
|
||||
* translate an ip address
|
||||
*/
|
||||
|
|
@ -1521,11 +1526,11 @@ iptrans(Ndbtuple *t, Network *np, char *serv, char *rem, int hack)
|
|||
char x[Maxservice];
|
||||
|
||||
if(strcmp(t->attr, "ip") != 0)
|
||||
return 0;
|
||||
return nil;
|
||||
|
||||
if(serv == 0 || ipserv(np, serv, ts, sizeof ts) == 0){
|
||||
if(serv == nil || ipserv(np, serv, ts, sizeof ts) == nil){
|
||||
werrstr("can't translate service");
|
||||
return 0;
|
||||
return nil;
|
||||
}
|
||||
if(rem != nil)
|
||||
snprint(x, sizeof(x), "!%s", rem);
|
||||
|
|
@ -1535,9 +1540,14 @@ iptrans(Ndbtuple *t, Network *np, char *serv, char *rem, int hack)
|
|||
if(*t->val == '*')
|
||||
snprint(reply, sizeof(reply), "%s/%s/clone %s%s",
|
||||
mntpt, np->net, ts, x);
|
||||
else
|
||||
else {
|
||||
/* il only supports ipv4 addresses */
|
||||
if(strcmp(np->net, "il") == 0 && !isv4str(t->val))
|
||||
return nil;
|
||||
|
||||
snprint(reply, sizeof(reply), "%s/%s/clone %s!%s%s%s",
|
||||
mntpt, np->net, t->val, ts, x, hack? "!fasttimeout": "");
|
||||
}
|
||||
|
||||
return estrdup(reply);
|
||||
}
|
||||
|
|
@ -1546,16 +1556,16 @@ iptrans(Ndbtuple *t, Network *np, char *serv, char *rem, int hack)
|
|||
* lookup a telephone number
|
||||
*/
|
||||
Ndbtuple*
|
||||
telcolookup(Network *np, char *host, char *serv, int nolookup)
|
||||
telcolookup(Network *np, char *host, char *serv)
|
||||
{
|
||||
Ndbtuple *t;
|
||||
Ndbs s;
|
||||
|
||||
USED(np, nolookup, serv);
|
||||
USED(np, serv);
|
||||
|
||||
werrstr("can't translate address");
|
||||
free(ndbgetvalue(db, &s, "sys", host, "telco", &t));
|
||||
if(t == 0)
|
||||
if(t == nil)
|
||||
return ndbnew("telco", host);
|
||||
|
||||
return reorder(t, s.t);
|
||||
|
|
@ -1571,13 +1581,13 @@ telcotrans(Ndbtuple *t, Network *np, char *serv, char *rem, int)
|
|||
char x[Maxservice];
|
||||
|
||||
if(strcmp(t->attr, "telco") != 0)
|
||||
return 0;
|
||||
return nil;
|
||||
|
||||
if(rem != nil)
|
||||
snprint(x, sizeof(x), "!%s", rem);
|
||||
else
|
||||
*x = 0;
|
||||
if(serv)
|
||||
if(serv != nil)
|
||||
snprint(reply, sizeof(reply), "%s/%s/clone %s!%s%s", mntpt, np->net,
|
||||
t->val, serv, x);
|
||||
else
|
||||
|
|
@ -1605,10 +1615,10 @@ reorder(Ndbtuple *t, Ndbtuple *x)
|
|||
/* remove this line and everything after it from the entry */
|
||||
for(nt = t; nt->entry != line; nt = nt->entry)
|
||||
;
|
||||
nt->entry = 0;
|
||||
nt->entry = nil;
|
||||
|
||||
/* make that the start of the entry */
|
||||
for(nt = line; nt->entry; nt = nt->entry)
|
||||
for(nt = line; nt->entry != nil; nt = nt->entry)
|
||||
;
|
||||
nt->entry = t;
|
||||
return line;
|
||||
|
|
@ -1671,7 +1681,7 @@ dnsip6lookup(char *mntpt, char *buf, Ndbtuple *t)
|
|||
* call the dns process and have it try to translate a name
|
||||
*/
|
||||
Ndbtuple*
|
||||
dnsiplookup(char *host, Ndbs *s)
|
||||
dnsiplookup(char *host, Ndbs *s, int v6)
|
||||
{
|
||||
char buf[Maxreply];
|
||||
Ndbtuple *t;
|
||||
|
|
@ -1689,16 +1699,16 @@ dnsiplookup(char *host, Ndbs *s)
|
|||
else {
|
||||
t = dnsquery(mntpt, host, "ip");
|
||||
/* special case: query ipv6 (AAAA dns RR) too */
|
||||
if (ipv6lookups)
|
||||
if (v6 && ipv6lookups)
|
||||
t = dnsip6lookup(mntpt, host, t);
|
||||
}
|
||||
s->t = t;
|
||||
|
||||
if(t == nil){
|
||||
rerrstr(buf, sizeof buf);
|
||||
if(strstr(buf, "exist"))
|
||||
if(strstr(buf, "exist") != nil)
|
||||
werrstr("can't translate address: %s", buf);
|
||||
else if(strstr(buf, "dns failure"))
|
||||
else if(strstr(buf, "dns failure") != nil)
|
||||
werrstr("temporary problem: %s", buf);
|
||||
}
|
||||
|
||||
|
|
@ -1714,7 +1724,7 @@ qmatch(Ndbtuple *t, char **attr, char **val, int n)
|
|||
|
||||
for(i = 1; i < n; i++){
|
||||
found = 0;
|
||||
for(nt = t; nt; nt = nt->entry)
|
||||
for(nt = t; nt != nil; nt = nt->entry)
|
||||
if(strcmp(attr[i], nt->attr) == 0)
|
||||
if(strcmp(val[i], "*") == 0
|
||||
|| strcmp(val[i], nt->val) == 0){
|
||||
|
|
@ -1734,7 +1744,7 @@ qreply(Mfile *mf, Ndbtuple *t)
|
|||
String *s;
|
||||
|
||||
s = s_new();
|
||||
for(nt = t; mf->nreply < Nreply && nt; nt = nt->entry){
|
||||
for(nt = t; mf->nreply < Nreply && nt != nil; nt = nt->entry){
|
||||
s_append(s, nt->attr);
|
||||
s_append(s, "=");
|
||||
s_append(s, nt->val);
|
||||
|
|
@ -1787,7 +1797,7 @@ genquery(Mfile *mf, char *query)
|
|||
/* parse pairs */
|
||||
for(i = 0; i < n; i++){
|
||||
p = strchr(attr[i], '=');
|
||||
if(p == 0)
|
||||
if(p == nil)
|
||||
return "bad query";
|
||||
*p++ = 0;
|
||||
val[i] = p;
|
||||
|
|
@ -1795,12 +1805,12 @@ genquery(Mfile *mf, char *query)
|
|||
|
||||
/* give dns a chance */
|
||||
if((strcmp(attr[0], "dom") == 0 || strcmp(attr[0], "ip") == 0) && val[0]){
|
||||
t = dnsiplookup(val[0], &s);
|
||||
if(t){
|
||||
t = dnsiplookup(val[0], &s, 1);
|
||||
if(t != nil){
|
||||
if(qmatch(t, attr, val, n)){
|
||||
qreply(mf, t);
|
||||
ndbfree(t);
|
||||
return 0;
|
||||
return nil;
|
||||
}
|
||||
ndbfree(t);
|
||||
}
|
||||
|
|
@ -1810,11 +1820,11 @@ genquery(Mfile *mf, char *query)
|
|||
t = ndbsearch(db, &s, attr[0], val[0]);
|
||||
|
||||
/* search is the and of all the pairs */
|
||||
while(t){
|
||||
while(t != nil){
|
||||
if(qmatch(t, attr, val, n)){
|
||||
qreply(mf, t);
|
||||
ndbfree(t);
|
||||
return 0;
|
||||
return nil;
|
||||
}
|
||||
|
||||
ndbfree(t);
|
||||
|
|
@ -1832,7 +1842,7 @@ ipresolve(char *attr, char *host)
|
|||
{
|
||||
Ndbtuple *t, *nt, **l;
|
||||
|
||||
t = iplookup(&network[Ntcp], host, "*", 0);
|
||||
t = iplookup(&network[Ntcp], host, "*");
|
||||
for(l = &t; *l != nil; ){
|
||||
nt = *l;
|
||||
if(strcmp(nt->attr, "ip") != 0){
|
||||
|
|
|
|||
Loading…
Reference in a new issue