static Req*
getreq(Srv *s)
{
int32_t n;
uint8_t *buf;
Fcall f;
Req *r;
qlock(&s->rlock);
if((n = read9pmsg(s->infd, s->rbuf, s->msize)) <= 0){
qunlock(&s->rlock);
return nil;
}
buf = emalloc9p(n);
memmove(buf, s->rbuf, n);
qunlock(&s->rlock);
if(convM2S(buf, n, &f) != n){
free(buf);
return nil;
}
if((r=allocreq(s->rpool, f.tag)) == nil){ /* duplicate tag: cons up a fake Req */
r = emalloc9p(sizeof *r);
incref(&r->ref);
r->tag = f.tag;
r->ifcall = f;
r->error = Eduptag;
r->buf = buf;
r->responded = 0;
r->type = 0;
r->srv = s;
r->pool = nil;
if(chatty9p)
fprint(2, "<-%d- %F: dup tag\n", s->infd, &f);
return r;
}
r->srv = s;
r->responded = 0;
r->buf = buf;
r->ifcall = f;
memset(&r->ofcall, 0, sizeof r->ofcall);
r->type = r->ifcall.type;
if(chatty9p)
if(r->error)
fprint(2, "<-%d- %F: %s\n", s->infd, &r->ifcall, r->error);
else
fprint(2, "<-%d- %F\n", s->infd, &r->ifcall);
return r;
}
static void
changemsize(Srv *srv, int msize)
{
if(srv->rbuf && srv->wbuf && srv->msize == msize)
return;
qlock(&srv->rlock);
qlock(&srv->wlock);
srv->msize = msize;
free(srv->rbuf);
free(srv->wbuf);
srv->rbuf = emalloc9p(msize);
srv->wbuf = emalloc9p(msize);
qunlock(&srv->rlock);
qunlock(&srv->wlock);
}
static Auth *
auth_plain(char *windom, char *keyp, uchar *chal, int len)
{
UserPasswd *up;
static Auth *ap;
USED(chal, len);
up = auth_getuserpasswd(auth_getkey, "windom=%s proto=pass service=cifs %s",
windom, keyp);
if(! up)
sysfatal("cannot get key - %r");
ap = emalloc9p(sizeof(Auth));
memset(ap, 0, sizeof(ap));
ap->user = estrdup9p(up->user);
ap->windom = estrdup9p(windom);
ap->resp[0] = estrdup9p(up->passwd);
ap->len[0] = strlen(up->passwd);
memset(up->passwd, 0, strlen(up->passwd));
free(up);
return ap;
}
static File*
allocfile(void)
{
int i, a;
File *f;
enum { N = 16 };
qlock(&filelk);
if(freefilelist == nil){
f = emalloc9p(N*sizeof(*f));
for(i=0; i<N-1; i++)
f[i].aux = &f[i+1];
f[N-1].aux = nil;
f[0].allocd = 1;
freefilelist = f;
}
f = freefilelist;
freefilelist = f->aux;
qunlock(&filelk);
a = f->allocd;
memset(f, 0, sizeof *f);
f->allocd = a;
return f;
}
static void
rstat(Req *r, char *error)
{
int n;
uchar *statbuf;
uchar tmp[BIT16SZ];
if(error)
return;
if(convD2M(&r->d, tmp, BIT16SZ) != BIT16SZ){
r->error = "convD2M(_,_,BIT16SZ) did not return BIT16SZ";
return;
}
n = GBIT16(tmp)+BIT16SZ;
statbuf = emalloc9p(n);
if(statbuf == nil){
r->error = "out of memory";
return;
}
r->ofcall.nstat = convD2M(&r->d, statbuf, n);
r->ofcall.stat = statbuf; /* freed in closereq */
if(r->ofcall.nstat <= BIT16SZ){
r->error = "convD2M fails";
free(statbuf);
return;
}
}
/*
* parse a command written to a device
*/
Cmdbuf*
parsecmd(char *p, int n)
{
Cmdbuf *cb;
int nf;
char *sp;
nf = ncmdfield(p, n);
/* allocate Cmdbuf plus string pointers plus copy of string including \0 */
sp = emalloc9p(sizeof(*cb) + nf * sizeof(char*) + n + 1);
cb = (Cmdbuf*)sp;
cb->f = (char**)(&cb[1]);
cb->buf = (char*)(&cb->f[nf]);
memmove(cb->buf, p, n);
/* dump new line and null terminate */
if(n > 0 && cb->buf[n-1] == '\n')
n--;
cb->buf[n] = '\0';
cb->nf = tokenize(cb->buf, cb->f, nf-1);
cb->f[cb->nf] = nil;
return cb;
}
static void
fscreate(Req *r)
{
FInfo fi;
int rc, is_dir;
char *npath;
Aux *a = r->fid->aux;
a->end = a->off = 0;
a->cache = emalloc9p(max(Sess->mtu, MTU));
is_dir = (r->ifcall.perm & DMDIR) == DMDIR;
npath = smprint("%s/%s", a->path, r->ifcall.name);
if(Sess->caps & CAP_NT_SMBS)
rc = ntcreateopen(a, mapfile(npath), r->ifcall.mode,
r->ifcall.perm, 1, is_dir, &fi);
else
rc = smbcreateopen(a, mapfile(npath), r->ifcall.mode,
r->ifcall.perm, 1, is_dir, &fi);
if(rc == -1){
free(npath);
responderrstr(r);
return;
}
r->fid->qid = mkqid(npath, fi.attribs & ATTR_DIRECTORY, fi.changed, 0, 0);
r->ofcall.qid = r->fid->qid;
free(a->path);
a->path = npath;
respond(r, nil);
}
static char*
fsclone(Fid *ofid, Fid *fid)
{
Aux *oa = ofid->aux;
Aux *a = emalloc9p(sizeof(Aux));
fid->aux = a;
memset(a, 0, sizeof(Aux));
a->sh = -1;
a->fh = -1;
a->sp = oa->sp;
a->path = estrdup9p(oa->path);
if(Auxroot){
a->prev = Auxroot;
a->next = Auxroot->next;
Auxroot->next->prev = a;
Auxroot->next = a;
} else {
Auxroot = a;
a->next = a;
a->prev = a;
}
return nil;
}
static void
fsopen(Req *r)
{
int rc;
FInfo fi;
Aux *a = r->fid->aux;
a->end = a->off = 0;
a->cache = emalloc9p(max(Sess->mtu, MTU));
if(ptype(r->fid->qid.path) == Pinfo){
if(makeinfo(pindex(r->fid->qid.path)) != -1)
respond(r, nil);
else
respond(r, "cannot generate info");
return;
}
if(r->fid->qid.type & QTDIR){
respond(r, nil);
return;
}
if(Sess->caps & CAP_NT_SMBS)
rc = ntcreateopen(a, mapfile(a->path), r->ifcall.mode, 0777,
0, 0, &fi);
else
rc = smbcreateopen(a, mapfile(a->path), r->ifcall.mode, 0777,
0, 0, &fi);
if(rc == -1){
responderrstr(r);
return;
}
respond(r, nil);
}
static void
fscreate(Req* r)
{
File* file;
Query* q;
char* name;
char* uid;
int mode;
File* f;
file = r->fid->file;
name = r->ifcall.name;
uid = r->fid->uid;
mode = r->fid->file->dir.mode & 0x777 & r->ifcall.perm;
mode |= (r->ifcall.perm & ~0x777);
if(mode&DMDIR){
respond(r, "queries cannot be directories");
return;
}
if(f = createfile(file, name, uid, mode, nil)){
q = emalloc9p(sizeof *q);
q->text = estrdup9p("");
q->expr = nil;
f->aux = q;
closefile(r->fid->file);
r->fid->file = f;
r->ofcall.qid = f->dir.qid;
respond(r, nil);
} else
respond(r, "problem creating file");
}
static void
fsattach(Req *r)
{
Revfile *rf;
if(r->ifcall.aname && r->ifcall.aname[0]){
respond(r, "invalid attach specifier");
return;
}
r->fid->qid.path = Qroot;
r->fid->qid.type = QTDIR;
r->fid->qid.vers = 0;
r->ofcall.qid = r->fid->qid;
rf = emalloc9p(sizeof(*rf));
rf->level = Qroot;
rf->info = nil;
rf->tree = nil;
rf->node = nil;
rf->rlog = nil;
rf->fd = -1;
rf->doff = 0;
rf->buf = nil;
r->fid->aux = rf;
respond(r, nil);
}
static CipherState*
initblowfish(Conn *c, int dir)
{
int i;
CipherState *cs;
if (debug > 1) {
fprint(2, "initblowfish dir:%d\ns2cek: ", dir);
for(i = 0; i < 16; ++i)
fprint(2, "%02x", c->s2cek[i]);
fprint(2, "\nc2sek: ");
for(i = 0; i < 16; ++i)
fprint(2, "%02x", c->c2sek[i]);
fprint(2, "\ns2civ: ");
for(i = 0; i < 8; ++i)
fprint(2, "%02x", c->s2civ[i]);
fprint(2, "\nc2siv: ");
for(i = 0; i < 8; ++i)
fprint(2, "%02x", c->c2siv[i]);
fprint(2, "\n");
}
cs = emalloc9p(sizeof(CipherState));
memset(cs, '\0', sizeof *cs);
fprint(2, "cs: %p\n", cs);
if(dir)
setupBFstate(&cs->state, c->s2cek, 16, c->s2civ);
else
setupBFstate(&cs->state, c->c2sek, 16, c->c2siv);
return cs;
}
uchar*
getrange(Block *b)
{
uchar *data;
char *status;
int netfd;
static Biobuf netbio;
b->len = Blocksize;
if(b->off + b->len > size)
b->len = size - b->off;
if(debug)
print("getrange: %lld %lld\n", b->off, b->len);
netfd = dialhttp(&netbio);
fprint(netfd,
"GET %s HTTP/1.1\r\n"
"Host: %s\r\n"
"Accept-Encoding:\r\n"
"Range: bytes=%lld-%lld\r\n"
"\r\n",
get, host, b->off, b->off+b->len);
Bflush(&netbio);
status = readhttphdr(&netbio, nil);
if(status == nil)
return nil;
/*
* Some servers (e.g., www.google.com) return 200 OK
* when you ask for the entire page in one range.
*/
if(strstr(status, "206 Partial Content")==nil
&& (b->off!=0 || b->len!=size || strstr(status, "200 OK")==nil)){
free(status);
close(netfd);
werrstr("did not get requested range");
return nil;
}
free(status);
data = emalloc9p(b->len);
if(Bread(&netbio, data, b->len) != b->len){
free(data);
close(netfd);
werrstr("not enough bytes read");
return nil;
}
b->p = data;
close(netfd);
return data;
}
Reqpool*
allocreqpool(void (*destroy)(Req*))
{
Reqpool *f;
f = emalloc9p(sizeof *f);
f->map = allocmap(increqref);
f->destroy = destroy;
return f;
}
Intmap*
allocmap(void (*inc)(void*))
{
Intmap *m;
m = emalloc9p(sizeof(*m));
if(inc == nil)
inc = nop;
m->inc = inc;
return m;
}
static CipherState*
initrc4(Conn *c, int dir)
{
CipherState *cs;
cs = emalloc9p(sizeof(CipherState));
if(dir)
setupRC4state(&cs->state, c->s2cek, 16);
else
setupRC4state(&cs->state, c->c2sek, 16);
return cs;
}
void
initdata(char *f, int)
{
char err[ERRMAX];
char buf[1024], *fld[8];
int n;
Dir *d;
isdev = 1;
flash.dfd = open(f, ORDWR);
if(flash.dfd < 0){
errstr(err, sizeof err);
if((flash.dfd = create(f, ORDWR, 0666)) >= 0){
fprint(2, "warning: created plain file %s\n", buf);
goto Plain;
}
errstr(err, sizeof err); /* restore open error */
sysfatal("opening %s: %r", f);
}
if(snprint(buf, sizeof buf, "%sctl", f) != strlen(f)+3)
sysfatal("path too long: %s", f);
flash.cfd = open(buf, ORDWR);
if(flash.cfd < 0){
fprint(2, "warning: cannot open %s (%r); assuming plain file\n", buf);
Plain:
isdev = 0;
if(sectsize == 0)
sectsize = 512;
if(nsects == 0){
if((d = dirstat(f)) == nil)
sysfatal("stat %s: %r", f);
nsects = d->length / sectsize;
free(d);
}
ones = emalloc9p(sectsize);
memset(ones, ~0, sectsize);
}else{
n = read(flash.cfd, buf, sizeof(buf)-1);
if(n <= 0)
sysfatal("reading %sctl: %r", f);
buf[n] = 0;
n = tokenize(buf, fld, nelem(fld));
if(n < 7)
sysfatal("bad flash geometry");
nsects = atoi(fld[5]);
sectsize = atoi(fld[6]);
if(nsects < 8)
sysfatal("unreasonable value for nsects: %lud", nsects);
if(sectsize < 512)
sysfatal("unreasonable value for sectsize: %lud", sectsize);
}
}
Pkt *
cifshdr(Session *s, Share *sp, int cmd)
{
Pkt *p;
int sign, tid, dfs;
dfs = 0;
tid = NO_TID;
Active = IDLE_TIME;
werrstr("");
sign = s->secmode & SECMODE_SIGN_ENABLED? FL2_PACKET_SIGNATURES: 0;
if(sp){
tid = sp->tid;
// FIXME! if(sp->options & SMB_SHARE_IS_IN_DFS)
// FIXME! dfs = FL2_DFS;
}
p = emalloc9p(sizeof(Pkt) + MTU);
memset(p, 0, sizeof(Pkt) +MTU);
p->buf = (uchar *)p + sizeof(Pkt);
p->s = s;
p->request = cmd; /* for debug */
qlock(&s->seqlock);
if(s->seqrun){
p->seq = s->seq;
s->seq = (s->seq + 2) % 0x10000;
}
qunlock(&s->seqlock);
nbthdr(p);
pmem(p, magic, nelem(magic));
p8(p, cmd);
pl32(p, 0); /* status (error) */
p8(p, FL_CASELESS_NAMES | FL_CANNONICAL_NAMES); /* flags */
pl16(p, s->flags2 | dfs | sign); /* flags2 */
pl16(p, (s->pid >> 16) & 0xffff); /* PID MS bits */
pl32(p, p->seq); /* MAC / sequence number */
pl32(p, 0); /* MAC */
pl16(p, 0); /* padding */
pl16(p, tid);
pl16(p, s->pid & 0xffff);
pl16(p, s->uid);
pl16(p, s->mid);
p->wordbase = p8(p, 0); /* filled in by pbytes() */
return p;
}
static int
parsepubkey(char *s, RSApub *key, char **sp, int base)
{
int n;
char *host, *p, *z;
z = nil;
n = strtoul(s, &p, 10);
host = nil;
if(n < Arbsz || !isspace(*p)){ /* maybe this is a host name */
host = s;
s = strpbrk(s, " \t");
if(s == nil)
return -1;
z = s;
*s++ = '\0';
s += strspn(s, " \t");
n = strtoul(s, &p, 10);
if(n < Arbsz || !isspace(*p)){
if(z)
*z = ' ';
return -1;
}
}
/* Arbsz is just a sanity check */
if((key->ek = strtomp(p, &p, base, nil)) == nil ||
(key->n = strtomp(p, &p, base, nil)) == nil ||
(*p != '\0' && !isspace(*p)) || mpsignif(key->n) < Arbsz) {
mpfree(key->ek);
mpfree(key->n);
key->ek = nil;
key->n = nil;
if(z)
*z = ' ';
return -1;
}
if(host == nil){
if(*p != '\0'){
p += strspn(p, " \t");
if(*p != '\0'){
host = emalloc9p(strlen(p)+1);
strcpy(host, p);
}
}
free(s);
}
*sp = host;
return 0;
}
/*
* NTLM response only, the LM response is a just
* copy of the NTLM one. we do this because the lm
* response is easily reversed - Google for l0pht
* for more info.
*/
static Auth *
auth_ntlm(char *windom, char *keyp, uchar *chal, int len)
{
Auth *ap;
if((ap = auth_lm_and_ntlm(windom, keyp, chal, len)) == nil)
return nil;
free(ap->resp[0]);
ap->len[0] = ap->len[1];
ap->resp[0] = emalloc9p(ap->len[0]);
memcpy(ap->resp[0], ap->resp[1], ap->len[0]);
return ap;
}
void
fscreate(Req *r)
{
Ramfile *rf;
File *f;
if(f = createfile(r->fid->file, r->ifcall.name, r->fid->uid, r->ifcall.perm, nil)){
rf = emalloc9p(sizeof *rf);
f->aux = rf;
r->fid->file = f;
r->ofcall.qid = f->qid;
respond(r, nil);
return;
}
respond(r, Ebad);
}
static CipherState*
init3des(Conn *c, int dir)
{
CipherState *cs;
uint8_t key[3][8];
cs = emalloc9p(sizeof(CipherState));
if(dir){
memmove(key, c->s2cek, sizeof key);
setupDES3state(&cs->state, key, c->s2civ);
} else {
memmove(key, c->c2sek, sizeof key);
setupDES3state(&cs->state, key, c->c2siv);
}
return cs;
}
void
auth9p(Req *r)
{
char *spec;
Afid *afid;
afid = emalloc9p(sizeof(Afid));
afid->afd = open("/mnt/factotum/rpc", ORDWR);
if(afid->afd < 0)
goto error;
if((afid->rpc = auth_allocrpc(afid->afd)) == nil)
goto error;
if(r->ifcall.uname[0] == 0)
goto error;
afid->uname = estrdup9p(r->ifcall.uname);
afid->aname = estrdup9p(r->ifcall.aname);
spec = r->srv->keyspec;
if(spec == nil)
spec = "proto=p9any role=server";
if(auth_rpc(afid->rpc, "start", spec, strlen(spec)) != ARok)
goto error;
r->afid->qid.type = QTAUTH;
r->afid->qid.path = ++authgen;
r->afid->qid.vers = 0;
r->afid->omode = ORDWR;
r->ofcall.qid = r->afid->qid;
r->afid->aux = afid;
respond(r, nil);
return;
error:
if(afid->rpc)
auth_freerpc(afid->rpc);
if(afid->uname)
free(afid->uname);
if(afid->aname)
free(afid->aname);
if(afid->afd >= 0)
close(afid->afd);
free(afid);
responderror(r);
}
void
ctlwrite(Req *r)
{
char *msg;
Cmdbuf *cb;
r->ofcall.count = r->ifcall.count;
msg = emalloc9p(r->ifcall.count+1);
memmove(msg, r->ifcall.data, r->ifcall.count);
msg[r->ifcall.count] = '\0';
cb = parsecmd(r->ifcall.data, r->ifcall.count);
ctlwrite0(r, msg, cb);
free(cb);
free(msg);
}
static char *
newpath(char *path, char *name)
{
char *p, *q;
assert((p = strrchr(path, '/')) != nil);
if(strcmp(name, "..") == 0){
if(p == path)
return estrdup9p("/");
q = emalloc9p((p-path)+1);
strecpy(q, q+(p-path)+1, path);
return q;
}
if(strcmp(path, "/") == 0)
return smprint("/%s", name);
return smprint("%s/%s", path, name);
}
static Revlog*
getrevlog(Revnode *nd)
{
char buf[MAXPATH];
Revlog *rl, **link;
int mang;
mang = mangle;
Again:
nodepath(seprint(buf, buf+sizeof(buf), "%s/.hg/store/data", workdir),
buf+sizeof(buf), nd, mang);
link = &revlogs;
while(rl = *link){
if(strcmp(buf, rl->path) == 0){
if(rl->ref == 0) nfreerevlogs--;
break;
}
if(nfreerevlogs > 8 && rl->ref == 0){
*link = rl->next;
nfreerevlogs--;
revlogclose(rl);
free(rl);
continue;
}
link = &rl->next;
}
if(rl == nil){
rl = emalloc9p(sizeof(*rl));
memset(rl, 0, sizeof(*rl));
if(revlogopen(rl, buf, OREAD) < 0){
free(rl);
if(mang++ == 0)
goto Again;
return nil;
}
rl->next = revlogs;
revlogs = rl;
if(mang)
mangle = 1;
} else
revlogupdate(rl);
incref(rl);
return rl;
}
Tree*
alloctree(char *uid, char *gid, uint32_t mode, void (*destroy)(File*))
{
char *muid;
Tree *t;
File *f;
t = emalloc9p(sizeof *t);
f = allocfile();
f->Dir.name = estrdup9p("/");
if(uid == nil){
uid = getuser();
if(uid == nil)
uid = "none";
}
uid = estrdup9p(uid);
if(gid == nil)
gid = estrdup9p(uid);
else
gid = estrdup9p(gid);
muid = estrdup9p(uid);
f->Dir.qid = (Qid){0, 0, QTDIR};
f->Dir.length = 0;
f->Dir.atime = f->Dir.mtime = time(0);
f->Dir.mode = DMDIR | mode;
f->tree = t;
f->parent = f;
f->Dir.uid = uid;
f->Dir.gid = gid;
f->Dir.muid = muid;
incref(&f->Ref);
t->root = f;
t->qidgen = 0;
t->dirqidgen = 1;
if(destroy == nil)
destroy = nop;
t->destroy = destroy;
return t;
}
Req*
allocreq(Reqpool *pool, ulong tag)
{
Req *r;
r = emalloc9p(sizeof *r);
r->tag = tag;
r->pool = pool;
increqref(r);
increqref(r);
if(caninsertkey(pool->map, tag, r) == 0) {
closereq(r);
closereq(r);
return nil;
}
return r;
}
void
main(int argc, char **argv)
{
int ro;
char *file, *mount;
mount = "/n/brzr";
ro = 0;
file = "/dev/flash/fs";
ARGBEGIN {
case 'D':
chatty9p++;
break;
case 'r':
ro++;
break;
case 'n':
nsects = argval(ARGF());
break;
case 'z':
sectsize = argval(ARGF());
break;
case 'f':
file = ARGF();
break;
case 'm':
mount = ARGF();
break;
default:
usage();
} ARGEND
if(argc != 0)
usage();
initdata(file, 0);
sectbuff = emalloc9p(sectsize);
einit();
loadfs(ro);
serve(mount);
exits(nil);
}
Session *
cifsdial(char *host, char *called, char *sysname)
{
int nbt, fd;
char *addr;
Session *s;
if(Debug)
fprint(2, "cifsdial: host=%s called=%s sysname=%s\n", host, called, sysname);
if((addr = netmkaddr(host, "tcp", "cifs")) == nil)
return nil;
nbt = 0;
if((fd = dial(addr, nil, nil, nil)) == -1){
nbt = 1;
if((fd = nbtdial(host, called, sysname)) == -1)
return nil;
}
s = emalloc9p(sizeof(Session));
memset(s, 0, sizeof(Session));
s->fd = fd;
s->nbt = nbt;
s->mtu = MTU;
s->pid = getpid();
s->mid = time(nil) ^ getpid();
s->uid = NO_UID;
s->seq = 0;
s->seqrun = 0;
s->secmode = SECMODE_SIGN_ENABLED; /* hope for the best */
s->flags2 = FL2_KNOWS_LONG_NAMES | FL2_HAS_LONG_NAMES | FL2_PAGEING_IO;
s->macidx = -1;
if(s->mtu > MTU)
s->mtu = MTU;
return s;
}
