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|
implement Collabsrv;
include "sys.m";
sys: Sys;
include "draw.m";
include "keyring.m";
include "security.m";
auth: Auth;
include "srvmgr.m";
include "proxy.m";
include "arg.m";
Collabsrv: module
{
init: fn (ctxt: ref Draw->Context, args: list of string);
};
authinfo: ref Keyring->Authinfo;
stderr: ref Sys->FD;
Srvreq, Srvreply: import Srvmgr;
usage()
{
sys->fprint(stderr, "usage: collabsrv [-k keyfile] [-n netaddress] [dir]\n");
raise "fail:usage";
}
init(nil: ref Draw->Context, args: list of string)
{
sys = load Sys Sys->PATH;
sys->pctl(Sys->NEWPGRP, nil);
stderr = sys->fildes(2);
(err, user) := user();
if (err != nil)
error(err);
netaddr := "tcp!*!9999";
keyfile := "/usr/" + user + "/keyring/default";
root := "/services/collab";
arg := load Arg Arg->PATH;
arg->init(args);
while ((opt := arg->opt()) != 0)
case opt {
'k' =>
keyfile = arg->arg();
if (keyfile == nil)
usage();
if (keyfile[0] != '/' && (len keyfile < 2 || keyfile[0:2] != "./"))
keyfile = "/usr/" + user + "/keyring/" + keyfile;
'n' =>
netaddr = arg->arg();
if (netaddr == nil)
usage();
* =>
usage();
}
args = arg->argv();
arg = nil;
if(args != nil)
root = hd args;
auth = load Auth Auth->PATH;
if (auth == nil)
badmodule(Auth->PATH);
kr := load Keyring Keyring->PATH;
if (kr == nil)
badmodule(Keyring->PATH);
srvmgr := load Srvmgr Srvmgr->PATH;
if (srvmgr == nil)
badmodule(Srvmgr->PATH);
err = auth->init();
if (err != nil)
error(sys->sprint("failed to init Auth: %s", err));
authinfo = kr->readauthinfo(keyfile);
kr = nil;
if (authinfo == nil)
error(sys->sprint("cannot read %s: %r", keyfile));
netaddr = netmkaddr(netaddr, "tcp", "9999");
(ok, c) := sys->announce(netaddr);
if (ok < 0)
error(sys->sprint("cannot announce %s: %r", netaddr));
rc: chan of ref Srvreq;
(err, rc) = srvmgr->init(root);
if (err != nil)
error(err);
sys->print("Srvmgr started\n");
for (;;) {
(okl, nc) := sys->listen(c);
if (okl < 0) {
sys->print("listen failed: %r\n");
sys->sleep(1000);
return;
}
fd := sys->open(nc.dir+"/data", Sys->ORDWR);
if(nc.cfd != nil)
sys->fprint(nc.cfd, "keepalive");
nc.cfd = nil;
if (fd != nil)
spawn newclient(rc, fd, root);
fd = nil;
}
}
badmodule(path: string)
{
error(sys->sprint("cannot load module %s: %r", path));
}
error(s: string)
{
sys->fprint(stderr, "collabsrv: %s\n", s);
raise "fail:error";
}
user(): (string, string)
{
sys = load Sys Sys->PATH;
fd := sys->open("/dev/user", sys->OREAD);
if(fd == nil)
return (sys->sprint("can't open /dev/user: %r"), nil);
buf := array[128] of byte;
n := sys->read(fd, buf, len buf);
if(n <= 0)
return (sys->sprint("failed to read /dev/user: %r"), nil);
return (nil, string buf[0:n]);
}
newclient(rc: chan of ref Srvreq, fd: ref Sys->FD, root: string)
{
algs := "none" :: "clear" :: "md4" :: "md5" :: nil;
sys->print("new client\n");
proxy := load Proxy Proxy->PATH;
if (proxy == nil) {
sys->fprint(stderr, "collabsrv: cannot load %s: %r\n", Proxy->PATH);
return;
}
sys->pctl(Sys->NEWPGRP|Sys->FORKNS|Sys->FORKENV, nil);
s := "";
(fd, s) = auth->server(algs, authinfo, fd, 1);
if (fd == nil){
sys->fprint(stderr, "collabsrv: cannot authenticate: %s\n", s);
return;
}
sys->fprint(stderr, "uname: %s\n", s);
spawn proxy->init(root, fd, rc, s);
}
netmkaddr(addr, net, svc: string): string
{
if(net == nil)
net = "net";
(n, l) := sys->tokenize(addr, "!");
if(n <= 1){
if(svc== nil)
return sys->sprint("%s!%s", net, addr);
return sys->sprint("%s!%s!%s", net, addr, svc);
}
if(svc == nil || n > 2)
return addr;
return sys->sprint("%s!%s", addr, svc);
}
|
