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Add real factotum.

diff: cannot open b/libauth//null: file does not exist: 'b/libauth//null'

--- a/Makefile

+++ b/Makefile

@@ -8,10 +8,12 @@

 	readcons.$O\

 	secstore.$O\

 	latin1.$O\

+	$(OS)-factotum.$O\

-LIBS=\

+LIBS1=\

 	kern/libkern.a\

 	exportfs/libexportfs.a\

+	libauth/libauth.a\

 	libauthsrv/libauthsrv.a\

 	libsec/libsec.a\

 	libmp/libmp.a\

@@ -18,18 +20,12 @@

 	libmemdraw/libmemdraw.a\

 	libmemlayer/libmemlayer.a\

 	libdraw/libdraw.a\

-	libc/libc.a\

-	kern/libkern.a\

 	gui-$(GUI)/libgui.a\

-	libmemdraw/libmemdraw.a\

-	libdraw/libdraw.a\

-	kern/libkern.a\

 	libc/libc.a\

-	libmemdraw/libmemdraw.a\

-	libmemlayer/libmemlayer.a\

-	libdraw/libdraw.a\

-	libmachdep.a

+# stupid gcc

+LIBS=$(LIBS1) $(LIBS1) $(LIBS1) libmachdep.a

+

 $(TARG): $(OFILES) $(LIBS)

 	$(CC) $(LDFLAGS) -o $(TARG) $(OFILES) $(LIBS) $(LDADD)

@@ -45,6 +41,9 @@

 exportfs/libexportfs.a:

 	(cd exportfs; make)

+libauth/libauth.a:

+	(cd libauth; make)

+	

 libauthsrv/libauthsrv.a:

 	(cd libauthsrv; make)

--- a/cpu.c

+++ b/cpu.c

@@ -17,7 +17,6 @@

 #define Maxfdata 8192

 #define MaxStr 128

-static char*	getuser(void);

 static void	fatal(int, char*, ...);

 static void	catcher(void*, char*);

 static void	usage(void);

@@ -98,7 +97,9 @@

 		close(fd);

 	}

-        user = readcons("user", getenv("USER"), 0);

+        user = getenv("USER");

+        if(user == nil)

+        	user = readcons("user", nil, 0);

 	secstoreserver = nil;

 	ARGBEGIN{

 	case 'a':

@@ -126,6 +127,9 @@

 		}

 		break;

 */

+	case 'k':

+		keyspec = EARGF(usage());

+		break;

 	case 'u':

 		user = EARGF(usage());

 		break;

@@ -136,6 +140,15 @@

 		usage();

 	}ARGEND;

+	if((fd = dialfactotum()) < 0)

+		fprint(2, "dial factotum: %r\n");

+	else if(sysmount(fd, -1, "/mnt/factotum", MREPL, "") < 0)

+		fprint(2, "mount factotum: %r\n");

+	else if((fd = open("/mnt/factotum/ctl", OREAD)) < 0)

+		fprint(2, "open /mnt/factotum/ctl: %r\n");

+	else

+		close(fd);

+

 	if(secstoreserver == nil)

 		secstoreserver = authserver;

@@ -436,7 +449,97 @@

 	return mkserverticket(tr, key, tbuf);

 }

+/*

+ *  prompt user for a key.  don't care about memory leaks, runs standalone

+ */

+static Attr*

+promptforkey(char *params)

+{

+	char *v;

+	int fd;

+	Attr *a, *attr;

+	char *def;

+

+	fd = open("/dev/cons", ORDWR);

+	if(fd < 0)

+		sysfatal("opening /dev/cons: %r");

+

+	attr = _parseattr(params);

+	fprint(fd, "\n!Adding key:");

+	for(a=attr; a; a=a->next)

+		if(a->type != AttrQuery && a->name[0] != '!')

+			fprint(fd, " %q=%q", a->name, a->val);

+	fprint(fd, "\n");

+

+	for(a=attr; a; a=a->next){

+		v = a->name;

+		if(a->type != AttrQuery || v[0]=='!')

+			continue;

+		def = nil;

+		if(strcmp(v, "user") == 0)

+			def = getuser();

+		a->val = readcons(v, def, 0);

+		if(a->val == nil)

+			sysfatal("user terminated key input");

+		a->type = AttrNameval;

+	}

+	for(a=attr; a; a=a->next){

+		v = a->name;

+		if(a->type != AttrQuery || v[0]!='!')

+			continue;

+		def = nil;

+		if(strcmp(v+1, "user") == 0)

+			def = getuser();

+		a->val = readcons(v+1, def, 1);

+		if(a->val == nil)

+			sysfatal("user terminated key input");

+		a->type = AttrNameval;

+	}

+	fprint(fd, "!\n");

+	close(fd);

+	return attr;

+}

+

+/*

+ *  send a key to the mounted factotum

+ */

+static int

+sendkey(Attr *attr)

+{

+	int fd, rv;

+	char buf[1024];

+

+	fd = open("/mnt/factotum/ctl", ORDWR);

+	if(fd < 0)

+		sysfatal("opening /mnt/factotum/ctl: %r");

+	rv = fprint(fd, "key %A\n", attr);

+	read(fd, buf, sizeof buf);

+	close(fd);

+	return rv;

+}

+

+int

+askuser(char *params)

+{

+	Attr *attr;

+	

+	fmtinstall('A', _attrfmt);

+	

+	attr = promptforkey(params);

+	if(attr == nil)

+		sysfatal("no key supplied");

+	if(sendkey(attr) < 0)

+		sysfatal("sending key to factotum: %r");

+	return 0;

+}

+

 AuthInfo*

+p9anyfactotum(int fd, int afd)

+{

+	return auth_proxy(fd, askuser, "proto=p9any role=client %s", keyspec);

+}

+

+AuthInfo*

 p9any(int fd)

 {

 	char buf[1024], buf2[1024], cchal[CHALLEN], *bbuf, *p, *dom, *u;

@@ -444,11 +547,14 @@

 	char tbuf[TICKETLEN+TICKETLEN+AUTHENTLEN], trbuf[TICKREQLEN];

 	char authkey[DESKEYLEN];

 	Authenticator auth;

-	int i, v2, n;

+	int afd, i, v2, n;

 	Ticketreq tr;

 	Ticket t;

 	AuthInfo *ai;

+	if((afd = open("/mnt/factotum/ctl", ORDWR)) >= 0)

+		return p9anyfactotum(fd, afd);

+

 	if((n = readstr(fd, buf, sizeof buf)) < 0)

 		fatal(1, "cannot read p9any negotiation");

 	bbuf = buf;

@@ -596,11 +702,5 @@

 	if(ealgs != nil)

 		*ealgs++ = 0;

 	return setam(s);

-}

-

-char*

-getuser(void)

-{

-	return getenv("USER");

 }

--- a/drawterm.h

+++ b/drawterm.h

@@ -8,3 +8,5 @@

 extern char *user;

 extern char *getkey(char*, char*);

 extern char *findkey(char**, char*);

+extern int dialfactotum(void);

+extern char *getuser(void);

--- a/exportfs/exportfs.c

+++ b/exportfs/exportfs.c

@@ -99,7 +99,7 @@

 			fatal("convM2S format error");

 		}

-//iprint("<- %F\n", &r->work);

+if(0) iprint("<- %F\n", &r->work);

 		DEBUG(DFD, "%F\n", &r->work);

 		(fcalls[r->work.type])(r);

 	}

@@ -110,6 +110,7 @@

 {

 	uchar *data;

 	int m, n;

+static QLock lk;

 	t->tag = r->tag;

 	t->fid = r->fid;

@@ -120,7 +121,7 @@

 	else 

 		t->type = r->type + 1;

-//iprint("-> %F\n", t);

+if(0) iprint("-> %F\n", t);

 	DEBUG(DFD, "\t%F\n", t);

 	data = malloc(messagesize);	/* not mallocz; no need to clear */

--- a/exportfs/exportsrv.c

+++ b/exportfs/exportsrv.c

@@ -431,6 +431,7 @@

 	Proc *p;

 	int pid;

 	static int nproc;

+	static QLock lk;

 	for(;;) {

 		for(p = Proclist; p; p = p->next) {

--- a/include/user.h

+++ b/include/user.h

@@ -50,6 +50,8 @@

 extern	int	dirfwstat(int, Dir*);

 extern	long	dirread(int, Dir*, long);

+extern	int	lfdfd(int);

+

 /*

  *  network dialing and authentication

  */

--- a/kern/Makefile

+++ b/kern/Makefile

@@ -13,6 +13,7 @@

 	devfs-$(OS).$O\

 	devip.$O\

 	devip-$(OS).$O\

+	devlfd.$O\

 	devmnt.$O\

 	devmouse.$O\

 	devpipe.$O\

--- a/kern/devcons.c

+++ b/kern/devcons.c

@@ -175,25 +175,6 @@

 	return n;

 }

-int

-iprint(char *fmt, ...)

-{

-	int n, s;

-	va_list arg;

-	char buf[PRINTSIZE];

-

-	s = splhi();

-	va_start(arg, fmt);

-	n = vseprint(buf, buf+sizeof(buf), fmt, arg) - buf;

-	va_end(arg);

-	if(screenputs != nil && iprintscreenputs)

-		screenputs(buf, n);

-	uartputs(buf, n);

-	splx(s);

-

-	return n;

-}

-

 void

 panic(char *fmt, ...)

 {

@@ -1207,4 +1188,24 @@

 	return n;

 }

+

+int

+iprint(char *fmt, ...)

+{

+	int n, s;

+	va_list arg;

+	char buf[PRINTSIZE];

+

+	s = splhi();

+	va_start(arg, fmt);

+	n = vseprint(buf, buf+sizeof(buf), fmt, arg) - buf;

+	va_end(arg);

+	if(screenputs != nil && iprintscreenputs)

+		screenputs(buf, n);

+#undef write

+	write(2, buf, n);

+	splx(s);

+

+	return n;

+}

--- /dev/null

+++ b/kern/devlfd.c

@@ -1,0 +1,126 @@

+#include	"u.h"

+#include <errno.h>

+#include	"lib.h"

+#include	"dat.h"

+#include	"fns.h"

+#include	"error.h"

+

+#undef pread

+#undef pwrite

+

+Chan*

+lfdchan(int fd)

+{

+	Chan *c;

+	

+	c = newchan();

+	c->type = devno('L', 0);

+	c->aux = (void*)fd;

+	c->name = newcname("fd");

+	c->mode = ORDWR;

+	c->qid.type = 0;

+	c->qid.path = 0;

+	c->qid.vers = 0;

+	c->dev = 0;

+	c->offset = 0;

+	return c;

+}

+

+int

+lfdfd(int fd)

+{

+	return newfd(lfdchan(fd));

+}

+

+static Chan*

+lfdattach(char *x)

+{

+	USED(x);

+	

+	error(Egreg);

+	return nil;

+}

+

+static Walkqid*

+lfdwalk(Chan *c, Chan *nc, char **name, int nname)

+{

+	USED(c);

+	USED(nc);

+	USED(name);

+	USED(nname);

+	

+	error(Egreg);

+	return nil;

+}

+

+static int

+lfdstat(Chan *c, uchar *dp, int n)

+{

+	USED(c);

+	USED(dp);

+	USED(n);

+	error(Egreg);

+	return -1;

+}

+

+static Chan*

+lfdopen(Chan *c, int omode)

+{

+	USED(c);

+	USED(omode);

+	

+	error(Egreg);

+	return nil;

+}

+

+static void

+lfdclose(Chan *c)

+{

+	close((int)c->aux);

+}

+

+static long

+lfdread(Chan *c, void *buf, long n, vlong off)

+{

+	USED(off);	/* can't pread on pipes */

+	n = read((int)c->aux, buf, n);

+	if(n < 0){

+		iprint("error %d\n", errno);

+		oserror();

+	}

+	return n;

+}

+

+static long

+lfdwrite(Chan *c, void *buf, long n, vlong off)

+{

+	USED(off);	/* can't pread on pipes */

+

+	n = write((int)c->aux, buf, n);

+	if(n < 0){

+		iprint("error %d\n", errno);

+		oserror();

+	}

+	return n;

+}

+

+Dev lfddevtab = {

+	'L',

+	"lfd",

+	

+	devreset,

+	devinit,

+	devshutdown,

+	lfdattach,

+	lfdwalk,

+	lfdstat,

+	lfdopen,

+	devcreate,

+	lfdclose,

+	lfdread,

+	devbread,

+	lfdwrite,

+	devbwrite,

+	devremove,

+	devwstat,

+};

--- a/kern/devroot.c

+++ b/kern/devroot.c

@@ -8,9 +8,12 @@

 {

 	Qdir = 0,

 	Qboot = 0x1000,

+	Qmnt = 0x2000,

+	Qfactotum,

 	Nrootfiles = 32,

 	Nbootfiles = 32,

+	Nmntfiles = 2,

 };

 typedef struct Dirlist Dirlist;

@@ -26,6 +29,7 @@

 static Dirtab rootdir[Nrootfiles] = {

 	"#/",		{Qdir, 0, QTDIR},	0,		DMDIR|0555,

 	"boot",	{Qboot, 0, QTDIR},	0,		DMDIR|0555,

+	"mnt",	{Qmnt, 0, QTDIR},	0,		DMDIR|0555,

 };

 static uchar *rootdata[Nrootfiles];

 static Dirlist rootlist = 

@@ -33,7 +37,7 @@

 	0,

 	rootdir,

 	rootdata,

-	2,

+	3,

 	Nrootfiles

 };

@@ -50,6 +54,19 @@

 	Nbootfiles

 };

+static Dirtab mntdir[Nmntfiles] = {

+	"mnt",	{Qmnt, 0, QTDIR},	0,		DMDIR|0555,

+	"factotum",	{Qfactotum, 0, QTDIR},	0,	DMDIR|0555,

+};

+static Dirlist mntlist =

+{

+	Qmnt,

+	mntdir,

+	nil,

+	2,

+	Nmntfiles

+};

+

 /*

  *  add a file to the list

  */

@@ -97,7 +114,6 @@

 	addrootdir("dev");

 	addrootdir("env");

 	addrootdir("fd");

-	addrootdir("mnt");

 	addrootdir("net");

 	addrootdir("net.alt");

 	addrootdir("proc");

@@ -129,6 +145,13 @@

 			return 1;

 		}

 		return devgen(c, name, rootlist.dir, rootlist.ndir, s, dp);

+	case Qmnt:

+		if(s == DEVDOTDOT){

+			Qid tqiddir = {Qdir, 0, QTDIR};

+			devdir(c, tqiddir, "#/", 0, eve, 0555, dp);

+			return 1;

+		}

+		return devgen(c, name, mntlist.dir, mntlist.ndir, s, dp);

 	case Qboot:

 		if(s == DEVDOTDOT){

 			Qid tqiddir = {Qdir, 0, QTDIR};

@@ -139,22 +162,25 @@

 	default:

 		if(s == DEVDOTDOT){

 			Qid tqiddir = {Qdir, 0, QTDIR};

-			if((int)c->qid.path < Qboot)

-				devdir(c, tqiddir, "#/", 0, eve, 0555, dp);

-			else {

-				tqiddir.path = Qboot;

-				devdir(c, tqiddir, "#/", 0, eve, 0555, dp);

-			}

+			tqiddir.path = c->qid.path&0xF000;

+			devdir(c, tqiddir, "#/", 0, eve, 0555, dp);

 			return 1;

 		}

 		if(s != 0)

 			return -1;

-		if((int)c->qid.path < Qboot){

+		switch((int)c->qid.path & 0xF000){

+		case Qdir:

 			t = c->qid.path-1;

 			l = &rootlist;

-		}else{

+			break;

+		case Qboot:

 			t = c->qid.path - Qboot - 1;

 			l = &bootlist;

+			break;

+		case Qmnt:

+			t = c->qid.path - Qmnt - 1;

+			l = &mntlist;

+			break;

 		}

 		if(t >= l->ndir)

 			return -1;

@@ -209,17 +235,19 @@

 	switch(t){

 	case Qdir:

 	case Qboot:

+	case Qmnt:

 		return devdirread(c, buf, n, nil, 0, rootgen);

 	}

-	if(t<Qboot)

-		l = &rootlist;

-	else{

-		t -= Qboot;

+	if(t&Qboot)

 		l = &bootlist;

-	}

-

+	else if(t&Qmnt)

+		l = &mntlist;

+	else

+		l = &bootlist;

+	t &= 0xFFF;

 	t--;

+

 	if(t >= l->ndir)

 		error(Egreg);

--- a/kern/devssl.c

+++ b/kern/devssl.c

@@ -765,6 +765,7 @@

 	int offset;

 	if(waserror()){

+iprint("error: %s\n", up->errstr);

 		if(b != nil)

 			free(b);

 		nexterror();

@@ -1071,8 +1072,9 @@

 			nexterror();

 		}

 		qlock(&s->out.q);

-

 		p = a;

+if(0) iprint("write %d %.2ux %.2ux %.2ux %.2ux %.2ux %.2ux %.2ux %.2ux\n",

+	n, p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);

 		e = p + n;

 		do {

 			m = e - p;

@@ -1092,7 +1094,9 @@

 			p += m;

 		} while(p < e);

-

+		p = a;

+if(0) iprint("wrote %d %.2ux %.2ux %.2ux %.2ux %.2ux %.2ux %.2ux %.2ux\n",

+	n, p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);

 		poperror();

 		qunlock(&s->out.q);

 		return n;

--- a/kern/devtab.c

+++ b/kern/devtab.c

@@ -12,6 +12,8 @@

 extern Dev drawdevtab;

 extern Dev ipdevtab;

 extern Dev fsdevtab;

+extern Dev mntdevtab;

+extern Dev lfddevtab;

 Dev *devtab[] = {

 	&rootdevtab,

@@ -22,6 +24,8 @@

 	&drawdevtab,

 	&ipdevtab,

 	&fsdevtab,

+	&mntdevtab,

+	&lfddevtab,

 	0

 };

--- /dev/null

+++ b/libauth/Makefile

@@ -1,0 +1,21 @@

+ROOT=..

+include ../Make.config

+

+LIB=libauth.a

+OFILES=\

+	attr.$O\

+	auth_attr.$O\

+	auth_challenge.$O\

+	auth_getuserpasswd.$O\

+	auth_proxy.$O\

+	auth_respond.$O\

+	auth_rpc.$O\

+	auth_userpasswd.$O\

+

+$(LIB): $(OFILES)

+	$(AR) r $(LIB) $(OFILES)

+	$(RANLIB) $(LIB)

+

+%.$O: %.c

+	$(CC) $(CFLAGS) $*.c

+

--- /dev/null

+++ b/libauth/attr.c

@@ -1,0 +1,174 @@

+#include <u.h>

+#include <libc.h>

+#include <auth.h>

+

+int

+_attrfmt(Fmt *fmt)

+{

+	char *b, buf[1024], *ebuf;

+	Attr *a;

+

+	ebuf = buf+sizeof buf;

+	b = buf;

+	strcpy(buf, " ");

+	for(a=va_arg(fmt->args, Attr*); a; a=a->next){

+		if(a->name == nil)

+			continue;

+		switch(a->type){

+		case AttrQuery:

+			b = seprint(b, ebuf, " %q?", a->name);

+			break;

+		case AttrNameval:

+			b = seprint(b, ebuf, " %q=%q", a->name, a->val);

+			break;

+		case AttrDefault:

+			b = seprint(b, ebuf, " %q:=%q", a->name, a->val);

+			break;

+		}

+	}

+	return fmtstrcpy(fmt, buf+1);

+}

+

+Attr*

+_copyattr(Attr *a)

+{

+	Attr **la, *na;

+

+	na = nil;

+	la = &na;

+	for(; a; a=a->next){

+		*la = _mkattr(a->type, a->name, a->val, nil);

+		setmalloctag(*la, getcallerpc(&a));

+		la = &(*la)->next;

+	}

+	*la = nil;

+	return na;

+}

+

+Attr*

+_delattr(Attr *a, char *name)

+{

+	Attr *fa;

+	Attr **la;

+

+	for(la=&a; *la; ){

+		if(strcmp((*la)->name, name) == 0){

+			fa = *la;

+			*la = (*la)->next;

+			fa->next = nil;

+			_freeattr(fa);

+		}else

+			la=&(*la)->next;

+	}

+	return a;

+}

+

+Attr*

+_findattr(Attr *a, char *n)

+{

+	for(; a; a=a->next)

+		if(strcmp(a->name, n) == 0 && a->type != AttrQuery)

+			return a;

+	return nil;

+}

+

+void

+_freeattr(Attr *a)

+{

+	Attr *anext;

+

+	for(; a; a=anext){

+		anext = a->next;

+		free(a->name);

+		free(a->val);

+		a->name = (void*)~0;

+		a->val = (void*)~0;

+		a->next = (void*)~0;

+		free(a);

+	}

+}

+

+Attr*

+_mkattr(int type, char *name, char *val, Attr *next)

+{

+	Attr *a;

+

+	a = malloc(sizeof(*a));

+	if(a==nil)

+		sysfatal("_mkattr malloc: %r");

+	a->type = type;

+	a->name = strdup(name);

+	a->val = strdup(val);

+	if(a->name==nil || a->val==nil)

+		sysfatal("_mkattr malloc: %r");

+	a->next = next;

+	setmalloctag(a, getcallerpc(&type));

+	return a;

+}

+

+static Attr*

+cleanattr(Attr *a)

+{

+	Attr *fa;

+	Attr **la;

+

+	for(la=&a; *la; ){

+		if((*la)->type==AttrQuery && _findattr(a, (*la)->name)){

+			fa = *la;

+			*la = (*la)->next;

+			fa->next = nil;

+			_freeattr(fa);

+		}else

+			la=&(*la)->next;

+	}

+	return a;

+}

+

+Attr*

+_parseattr(char *s)

+{

+	char *p, *t, *tok[256];

+	int i, ntok, type;

+	Attr *a;

+

+	s = strdup(s);

+	if(s == nil)

+		sysfatal("_parseattr strdup: %r");

+

+	ntok = tokenize(s, tok, nelem(tok));

+	a = nil;

+	for(i=ntok-1; i>=0; i--){

+		t = tok[i];

+		if(p = strchr(t, '=')){

+			*p++ = '\0';

+		//	if(p-2 >= t && p[-2] == ':'){

+		//		p[-2] = '\0';

+		//		type = AttrDefault;

+		//	}else

+				type = AttrNameval;

+			a = _mkattr(type, t, p, a);

+			setmalloctag(a, getcallerpc(&s));

+		}

+		else if(t[strlen(t)-1] == '?'){

+			t[strlen(t)-1] = '\0';

+			a = _mkattr(AttrQuery, t, "", a);

+			setmalloctag(a, getcallerpc(&s));

+		}else{

+			/* really a syntax error, but better to provide some indication */

+			a = _mkattr(AttrNameval, t, "", a);

+			setmalloctag(a, getcallerpc(&s));

+		}

+	}

+	free(s);

+	return cleanattr(a);

+}

+

+char*

+_strfindattr(Attr *a, char *n)

+{

+	a = _findattr(a, n);

+	if(a == nil)

+		return nil;

+	return a->val;

+}

+

--- /dev/null

+++ b/libauth/auth_attr.c

@@ -1,0 +1,13 @@

+#include <u.h>

+#include <libc.h>

+#include <auth.h>

+#include <authsrv.h>

+#include "authlocal.h"

+

+Attr*

+auth_attr(AuthRpc *rpc)

+{

+	if(auth_rpc(rpc, "attr", nil, 0) != ARok)

+		return nil;

+	return _parseattr(rpc->arg);

+}

--- /dev/null

+++ b/libauth/auth_challenge.c

@@ -1,0 +1,117 @@

+#include <u.h>

+#include <libc.h>

+#include <auth.h>

+#include <authsrv.h>

+#include "authlocal.h"

+

+Chalstate*

+auth_challenge(char *fmt, ...)

+{

+	char *p;

+	va_list arg;

+	Chalstate *c;

+

+	quotefmtinstall();	/* just in case */

+	va_start(arg, fmt);

+	p = vsmprint(fmt, arg);

+	va_end(arg);

+	if(p == nil)

+		return nil;

+

+	c = mallocz(sizeof(*c), 1);

+	if(c == nil){

+		free(p);

+		return nil;

+	}

+

+	if((c->afd = open("/mnt/factotum/rpc", ORDWR)) < 0){

+	Error:

+		auth_freechal(c);

+		free(p);

+		return nil;

+	}

+

+	if((c->rpc=auth_allocrpc(c->afd)) == nil

+	|| auth_rpc(c->rpc, "start", p, strlen(p)) != ARok

+	|| auth_rpc(c->rpc, "read", nil, 0) != ARok)

+		goto Error;

+

+	if(c->rpc->narg > sizeof(c->chal)-1){

+		werrstr("buffer too small for challenge");

+		goto Error;

+	}

+	memmove(c->chal, c->rpc->arg, c->rpc->narg);

+	c->nchal = c->rpc->narg;

+	free(p);

+	return c;

+}

+

+AuthInfo*

+auth_response(Chalstate *c)

+{

+	int ret;

+	AuthInfo *ai;

+

+	ai = nil;

+	if(c->afd < 0){

+		werrstr("auth_response: connection not open");

+		return nil;

+	}

+	if(c->resp == nil){

+		werrstr("auth_response: nil response");

+		return nil;

+	}

+	if(c->nresp == 0){

+		werrstr("auth_response: unspecified response length");

+		return nil;

+	}

+

+	if(c->user){

+		if(auth_rpc(c->rpc, "write", c->user, strlen(c->user)) != ARok){

+			/*

+			 * if this fails we're out of phase with factotum.

+			 * give up.

+			 */

+			goto Out;

+		}

+	}

+

+	if(auth_rpc(c->rpc, "write", c->resp, c->nresp) != ARok){

+		/*

+		 * don't close the connection -- maybe we'll try again.

+		 */

+		return nil;

+	}

+

+	switch(ret = auth_rpc(c->rpc, "read", nil, 0)){

+	case ARok:

+	default:

+		werrstr("factotum protocol botch %d %s", ret, c->rpc->ibuf);

+		break;

+	case ARdone:

+		ai = auth_getinfo(c->rpc);

+		break;

+	}

+

+Out:

+	close(c->afd);

+	auth_freerpc(c->rpc);

+	c->afd = -1;

+	c->rpc = nil;

+	return ai;

+}

+

+void

+auth_freechal(Chalstate *c)

+{

+	if(c == nil)

+		return;

+

+	if(c->afd >= 0)

+		close(c->afd);

+	if(c->rpc != nil)

+		auth_freerpc(c->rpc);

+

+	memset(c, 0xBB, sizeof(*c));

+	free(c);

+}

--- /dev/null

+++ b/libauth/auth_getuserpasswd.c

@@ -1,0 +1,75 @@

+#include <u.h>

+#include <libc.h>

+#include <auth.h>

+#include "authlocal.h"

+

+enum {

+	ARgiveup = 100,

+};

+

+static int

+dorpc(AuthRpc *rpc, char *verb, char *val, int len, AuthGetkey *getkey)

+{

+	int ret;

+

+	for(;;){

+		if((ret = auth_rpc(rpc, verb, val, len)) != ARneedkey && ret != ARbadkey)

+			return ret;

+		if(getkey == nil)

+			return ARgiveup;	/* don't know how */

+		if((*getkey)(rpc->arg) < 0)

+			return ARgiveup;	/* user punted */

+	}

+}

+

+UserPasswd*

+auth_getuserpasswd(AuthGetkey *getkey, char *fmt, ...)

+{

+	AuthRpc *rpc;

+	char *f[3], *p, *params;

+	int fd;

+	va_list arg;

+	UserPasswd *up;

+

+	up = nil;

+	rpc = nil;

+	params = nil;

+

+	fd = open("/mnt/factotum/rpc", ORDWR);

+	if(fd < 0)

+		goto out;

+	rpc = auth_allocrpc(fd);

+	if(rpc == nil)

+		goto out;

+	quotefmtinstall();	/* just in case */

+	va_start(arg, fmt);

+	params = vsmprint(fmt, arg);

+	va_end(arg);

+	if(params == nil)

+		goto out;

+

+	if(dorpc(rpc, "start", params, strlen(params), getkey) != ARok

+	|| dorpc(rpc, "read", nil, 0, getkey) != ARok)

+		goto out;

+

+	rpc->arg[rpc->narg] = '\0';

+	if(tokenize(rpc->arg, f, 2) != 2){

+		werrstr("bad answer from factotum");

+		goto out;

+	}

+	up = malloc(sizeof(*up)+rpc->narg+1);

+	if(up == nil)

+		goto out;

+	p = (char*)&up[1];

+	strcpy(p, f[0]);

+	up->user = p;

+	p += strlen(p)+1;

+	strcpy(p, f[1]);

+	up->passwd = p;

+

+out:

+	free(params);

+	auth_freerpc(rpc);

+	close(fd);

+	return up;

+}

--- /dev/null

+++ b/libauth/auth_proxy.c

@@ -1,0 +1,212 @@

+#include <u.h>

+#include <libc.h>

+#include <fcall.h>

+#include <auth.h>

+#include "authlocal.h"

+

+enum { 

+	ARgiveup = 100,

+};

+

+static uchar*

+gstring(uchar *p, uchar *ep, char **s)

+{

+	uint n;

+

+	if(p == nil)

+		return nil;

+	if(p+BIT16SZ > ep)

+		return nil;

+	n = GBIT16(p);

+	p += BIT16SZ;

+	if(p+n > ep)

+		return nil;

+	*s = malloc(n+1);

+	memmove((*s), p, n);

+	(*s)[n] = '\0';

+	p += n;

+	return p;

+}

+

+static uchar*

+gcarray(uchar *p, uchar *ep, uchar **s, int *np)

+{

+	uint n;

+

+	if(p == nil)

+		return nil;

+	if(p+BIT16SZ > ep)

+		return nil;

+	n = GBIT16(p);

+	p += BIT16SZ;

+	if(p+n > ep)

+		return nil;

+	*s = malloc(n);

+	if(*s == nil)

+		return nil;

+	memmove((*s), p, n);

+	*np = n;

+	p += n;

+	return p;

+}

+

+void

+auth_freeAI(AuthInfo *ai)

+{

+	if(ai == nil)

+		return;

+	free(ai->cuid);

+	free(ai->suid);

+	free(ai->cap);

+	free(ai->secret);

+	free(ai);

+}

+

+static uchar*

+convM2AI(uchar *p, int n, AuthInfo **aip)

+{

+	uchar *e = p+n;

+	AuthInfo *ai;

+

+	ai = mallocz(sizeof(*ai), 1);

+	if(ai == nil)

+		return nil;

+

+	p = gstring(p, e, &ai->cuid);

+	p = gstring(p, e, &ai->suid);

+	p = gstring(p, e, &ai->cap);

+	p = gcarray(p, e, &ai->secret, &ai->nsecret);

+	if(p == nil)

+		auth_freeAI(ai);

+	else

+		*aip = ai;

+	return p;

+}

+

+AuthInfo*

+auth_getinfo(AuthRpc *rpc)

+{

+	AuthInfo *a;

+

+	if(auth_rpc(rpc, "authinfo", nil, 0) != ARok)

+		return nil;

+	if(convM2AI((uchar*)rpc->arg, rpc->narg, &a) == nil){

+		werrstr("bad auth info from factotum");

+		return nil;

+	}

+	return a;

+}

+

+static int

+dorpc(AuthRpc *rpc, char *verb, char *val, int len, AuthGetkey *getkey)

+{

+	int ret;

+

+	for(;;){

+		if((ret = auth_rpc(rpc, verb, val, len)) != ARneedkey && ret != ARbadkey)

+			return ret;

+		if(getkey == nil)

+			return ARgiveup;	/* don't know how */

+		if((*getkey)(rpc->arg) < 0)

+			return ARgiveup;	/* user punted */

+	}

+}

+

+/*

+ *  this just proxies what the factotum tells it to.

+ */

+AuthInfo*

+fauth_proxy(int fd, AuthRpc *rpc, AuthGetkey *getkey, char *params)

+{

+	char *buf;

+	int m, n, ret;

+	AuthInfo *a;

+	char oerr[ERRMAX];

+

+	rerrstr(oerr, sizeof oerr);

+	werrstr("UNKNOWN AUTH ERROR");

+

+	if(dorpc(rpc, "start", params, strlen(params), getkey) != ARok){

+		werrstr("fauth_proxy start: %r");

+		return nil;

+	}

+

+	buf = malloc(AuthRpcMax);

+	if(buf == nil)

+		return nil;

+	for(;;){

+		switch(dorpc(rpc, "read", nil, 0, getkey)){

+		case ARdone:

+			free(buf);

+			a = auth_getinfo(rpc);

+			errstr(oerr, sizeof oerr);	/* no error, restore whatever was there */

+			return a;

+		case ARok:

+			if(write(fd, rpc->arg, rpc->narg) != rpc->narg){

+				werrstr("auth_proxy write fd: %r");

+				goto Error;

+			}

+			break;

+		case ARphase:

+			n = 0;

+			memset(buf, 0, AuthRpcMax);

+			while((ret = dorpc(rpc, "write", buf, n, getkey)) == ARtoosmall){

+				if(atoi(rpc->arg) > AuthRpcMax)

+					break;

+				m = read(fd, buf+n, atoi(rpc->arg)-n);

+				if(m <= 0){

+					if(m == 0)

+						werrstr("auth_proxy short read: %s", buf);

+					goto Error;

+				}

+				n += m;

+			}

+			if(ret != ARok){

+				werrstr("auth_proxy rpc write: %s: %r", buf);

+				goto Error;

+			}

+			break;

+		default:

+			werrstr("auth_proxy rpc: %r");

+			goto Error;

+		}

+	}

+Error:

+	free(buf);

+	return nil;

+}

+

+AuthInfo*

+auth_proxy(int fd, AuthGetkey *getkey, char *fmt, ...)

+{

+	int afd;

+	char *p;

+	va_list arg;

+	AuthInfo *ai;

+	AuthRpc *rpc;

+

+	quotefmtinstall();	/* just in case */

+	va_start(arg, fmt);

+	p = vsmprint(fmt, arg);

+	va_end(arg);

+

+	afd = open("/mnt/factotum/rpc", ORDWR);

+	if(afd < 0){

+		werrstr("opening /mnt/factotum/rpc: %r");

+		free(p);

+		return nil;

+	}

+

+	rpc = auth_allocrpc(afd);

+	if(rpc == nil){

+		free(p);

+		return nil;

+	}

+

+	ai = fauth_proxy(fd, rpc, getkey, p);

+	free(p);

+	auth_freerpc(rpc);

+	close(afd);

+	return ai;

+}

+

--- /dev/null

+++ b/libauth/auth_respond.c

@@ -1,0 +1,73 @@

+#include <u.h>

+#include <libc.h>

+#include <auth.h>

+#include <authsrv.h>

+#include "authlocal.h"

+

+enum {

+	ARgiveup = 100,

+};

+

+static int

+dorpc(AuthRpc *rpc, char *verb, char *val, int len, AuthGetkey *getkey)

+{

+	int ret;

+

+	for(;;){

+		if((ret = auth_rpc(rpc, verb, val, len)) != ARneedkey && ret != ARbadkey)

+			return ret;

+		if(getkey == nil)

+			return ARgiveup;	/* don't know how */

+		if((*getkey)(rpc->arg) < 0)

+			return ARgiveup;	/* user punted */

+	}

+}

+

+int

+auth_respond(void *chal, uint nchal, char *user, uint nuser, void *resp, uint nresp, AuthGetkey *getkey, char *fmt, ...)

+{

+	char *p, *s;

+	va_list arg;

+	int afd;

+	AuthRpc *rpc;

+	Attr *a;

+

+	if((afd = open("/mnt/factotum/rpc", ORDWR)) < 0)

+		return -1;

+	

+	if((rpc = auth_allocrpc(afd)) == nil){

+		close(afd);

+		return -1;

+	}

+

+	quotefmtinstall();	/* just in case */

+	va_start(arg, fmt);

+	p = vsmprint(fmt, arg);

+	va_end(arg);

+

+	if(p==nil

+	|| dorpc(rpc, "start", p, strlen(p), getkey) != ARok

+	|| dorpc(rpc, "write", chal, nchal, getkey) != ARok

+	|| dorpc(rpc, "read", nil, 0, getkey) != ARok){

+		free(p);

+		close(afd);

+		auth_freerpc(rpc);

+		return -1;

+	}

+	free(p);

+

+	if(rpc->narg < nresp)

+		nresp = rpc->narg;

+	memmove(resp, rpc->arg, nresp);

+

+	if((a = auth_attr(rpc)) != nil

+	&& (s = _strfindattr(a, "user")) != nil && strlen(s) < nuser)

+		strcpy(user, s);

+	else if(nuser > 0)

+		user[0] = '\0';

+

+	_freeattr(a);

+	close(afd);

+	auth_freerpc(rpc);

+	return nresp;	

+}

--- /dev/null

+++ b/libauth/auth_rpc.c

@@ -1,0 +1,116 @@

+#include <u.h>

+#include <libc.h>

+#include <auth.h>

+#include "authlocal.h"

+

+static struct {

+	char *verb;

+	int val;

+} tab[] = {

+	"ok",			ARok,

+	"done",		ARdone,

+	"error",		ARerror,

+	"needkey",	ARneedkey,

+	"badkey",		ARbadkey,

+	"phase",		ARphase,

+	"toosmall",	ARtoosmall,

+	"error",		ARerror,

+};

+

+static int

+classify(char *buf, uint n, AuthRpc *rpc)

+{

+	int i, len;

+

+	for(i=0; i<nelem(tab); i++){

+		len = strlen(tab[i].verb);

+		if(n >= len && memcmp(buf, tab[i].verb, len) == 0 && (n==len || buf[len]==' ')){

+			if(n==len){

+				rpc->narg = 0;

+				rpc->arg = "";

+			}else{

+				rpc->narg = n - (len+1);

+				rpc->arg = (char*)buf+len+1;

+			}

+			return tab[i].val;

+		}

+	}

+	werrstr("malformed rpc response: %s", buf);

+	return ARrpcfailure;

+}

+

+AuthRpc*

+auth_allocrpc(int afd)

+{

+	AuthRpc *rpc;

+

+	rpc = mallocz(sizeof(*rpc), 1);

+	if(rpc == nil)

+		return nil;

+	rpc->afd = afd;

+	return rpc;

+}

+

+void

+auth_freerpc(AuthRpc *rpc)

+{

+	free(rpc);

+}

+

+uint

+auth_rpc(AuthRpc *rpc, char *verb, void *a, int na)

+{

+	int l, n, type;

+	char *f[4];

+

+	l = strlen(verb);

+	if(na+l+1 > AuthRpcMax){

+		werrstr("rpc too big");

+		return ARtoobig;

+	}

+

+	memmove(rpc->obuf, verb, l);

+	rpc->obuf[l] = ' ';

+	memmove(rpc->obuf+l+1, a, na);

+	if((n=write(rpc->afd, rpc->obuf, l+1+na)) != l+1+na){

+		if(n >= 0)

+			werrstr("auth_rpc short write");

+		return ARrpcfailure;

+	}

+

+	if((n=read(rpc->afd, rpc->ibuf, AuthRpcMax)) < 0)

+		return ARrpcfailure;

+	rpc->ibuf[n] = '\0';

+

+	/*

+	 * Set error string for good default behavior.

+	 */

+	switch(type = classify(rpc->ibuf, n, rpc)){

+	default:

+		werrstr("unknown rpc type %d (bug in auth_rpc.c)", type);

+		break;

+	case ARok:

+		break;

+	case ARrpcfailure:

+		break;

+	case ARerror:

+		if(rpc->narg == 0)

+			werrstr("unspecified rpc error");

+		else

+			werrstr("%s", rpc->arg);

+		break;

+	case ARneedkey:

+		werrstr("needkey %s", rpc->arg);

+		break;

+	case ARbadkey:

+		if(getfields(rpc->arg, f, nelem(f), 0, "\n") < 2)

+			werrstr("badkey %s", rpc->arg);

+		else

+			werrstr("badkey %s", f[1]);

+		break;

+	case ARphase:

+		werrstr("phase error %s", rpc->arg);

+		break;

+	}

+	return type;

+}

--- /dev/null

+++ b/libauth/auth_userpasswd.c

@@ -1,0 +1,50 @@

+#include <u.h>

+#include <libc.h>

+#include <auth.h>

+#include <authsrv.h>

+#include "authlocal.h"

+

+/*

+ * compute the proper response.  We encrypt the ascii of

+ * challenge number, with trailing binary zero fill.

+ * This process was derived empirically.

+ * this was copied from inet's guard.

+ */

+static void

+netresp(char *key, long chal, char *answer)

+{

+	uchar buf[8];

+

+	memset(buf, 0, 8);

+	sprint((char *)buf, "%lud", chal);

+	if(encrypt(key, buf, 8) < 0)

+		abort();

+	chal = (buf[0]<<24)+(buf[1]<<16)+(buf[2]<<8)+buf[3];

+	sprint(answer, "%.8lux", chal);

+}

+

+AuthInfo*

+auth_userpasswd(char *user, char *passwd)

+{

+	char key[DESKEYLEN], resp[16];

+	AuthInfo *ai;

+	Chalstate *ch;

+

+	/*

+	 * Probably we should have a factotum protocol

+	 * to check a raw password.  For now, we use

+	 * p9cr, which is simplest to speak.

+	 */

+	if((ch = auth_challenge("user=%q proto=p9cr role=server", user)) == nil)

+		return nil;

+

+	passtokey(key, passwd);

+	netresp(key, atol(ch->chal), resp);

+	memset(key, 0, sizeof key);

+

+	ch->resp = resp;

+	ch->nresp = strlen(resp);

+	ai = auth_response(ch);

+	auth_freechal(ch);

+	return ai;

+}

--- /dev/null

+++ b/libauth/authlocal.h

@@ -1,0 +1,1 @@

+extern AuthInfo*	_fauth_proxy(int fd, AuthRpc *rpc, AuthGetkey *getkey, char *params);

--- /dev/null

+++ b/libauth/httpauth.c

@@ -1,0 +1,51 @@

+#include <u.h>

+#include <libc.h>

+#include <auth.h>

+#include <authsrv.h>

+

+/* deprecated.

+	This is the mechanism that put entries in /sys/lib/httpd.rewrite

+	and passwords on the authserver in /sys/lib/httppasswords, which

+	was awkward to administer.  Instead, use local .httplogin files,

+	which are implemented in sys/src/cmd/ip/httpd/authorize.c */

+

+int

+httpauth(char *name, char *password)

+{

+	int afd;

+	Ticketreq tr;

+	Ticket	t;

+	char key[DESKEYLEN];

+	char buf[512];

+

+	afd = authdial(nil, nil);

+	if(afd < 0)

+		return -1;

+

+	/* send ticket request to AS */

+	memset(&tr, 0, sizeof(tr));

+	strcpy(tr.uid, name);

+	tr.type = AuthHttp;

+	convTR2M(&tr, buf);

+	if(write(afd, buf, TICKREQLEN) != TICKREQLEN){

+		close(afd);

+		return -1;

+	}

+	if(_asrdresp(afd, buf, TICKETLEN) < 0){

+		close(afd);

+		return -1;

+	}

+	close(afd);

+

+	/*

+	 *  use password and try to decrypt the

+	 *  ticket.  If it doesn't work we've got a bad password,

+	 *  give up.

+	 */

+	passtokey(key, password);

+	convM2T(buf, &t, key);

+	if(t.num != AuthHr || strcmp(t.cuid, tr.uid))

+		return -1;

+

+	return 0;

+}

--- a/main.c

+++ b/main.c

@@ -36,6 +36,8 @@

 	char buf[1024], *s;

 	int n;

+	eve = getuser();

+

 	sizebug();

 	fmtinstall('r', errfmt);

--- /dev/null

+++ b/posix-factotum.c

@@ -1,0 +1,107 @@

+#include <u.h>

+#include <sys/socket.h>

+#include <sys/un.h>

+#include <pwd.h>

+#include <libc.h>

+#include <auth.h>

+#include <fcall.h>

+#include <authsrv.h>

+#include <libsec.h>

+#include "drawterm.h"

+

+#undef socket

+#undef connect

+#undef getenv

+#undef access

+

+char*

+getuser(void)

+{

+	static char user[64];

+	struct passwd *pw;

+

+	pw = getpwuid(getuid());

+	if(pw == nil)

+		return "none";

+	strecpy(user, user+sizeof user, pw->pw_name);

+	return user;

+}

+/*

+ * Absent other hints, it works reasonably well to use

+ * the X11 display name as the name space identifier.

+ * This is how sam's B has worked since the early days.

+ * Since most programs using name spaces are also using X,

+ * this still seems reasonable.  Terminal-only sessions

+ * can set $NAMESPACE.

+ */

+static char*

+nsfromdisplay(void)

+{

+	int fd;

+	Dir *d;

+	char *disp, *p;

+

+	if((disp = getenv("DISPLAY")) == nil){

+		werrstr("$DISPLAY not set");

+		return nil;

+	}

+

+	/* canonicalize: xxx:0.0 => xxx:0 */

+	p = strrchr(disp, ':');

+	if(p){

+		p++;

+		while(isdigit((uchar)*p))

+			p++;

+		if(strcmp(p, ".0") == 0)

+			*p = 0;

+	}

+

+	return smprint("/tmp/ns.%s.%s", getuser(), disp);

+}

+

+char*

+getns(void)

+{

+	char *ns;

+

+	ns = getenv("NAMESPACE");

+	if(ns == nil)

+		ns = nsfromdisplay();

+	if(ns == nil){

+		werrstr("$NAMESPACE not set, %r");

+		return nil;

+	}

+	return ns;

+}

+

+int

+dialfactotum(void)

+{

+	int fd;

+	struct sockaddr_un su;

+	char *name;

+	

+	name = smprint("%s/factotum", getns());

+

+	if(name == nil || access(name, 0) < 0)

+		return -1;

+	memset(&su, 0, sizeof su);

+	su.sun_family = AF_UNIX;

+	if(strlen(name)+1 > sizeof su.sun_path){

+		werrstr("socket name too long");

+		return -1;

+	}

+	strcpy(su.sun_path, name);

+	if((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0){

+		werrstr("socket: %r");

+		return -1;

+	}

+	if(connect(fd, (struct sockaddr*)&su, sizeof su) < 0){

+		werrstr("connect %s: %r", name);

+		close(fd);

+		return -1;

+	}

+

+	return lfdfd(fd);

+}

+

--- /dev/null

+++ b/win32-factotum.c

@@ -1,0 +1,22 @@

+#include <u.h>

+#include <libc.h>

+#include <auth.h>

+#include <fcall.h>

+#include <authsrv.h>

+#include <libsec.h>

+#include "drawterm.h"

+

+#undef getenv

+

+char*

+getuser(void)

+{

+	return getenv("USER");

+}

+

+int

+dialfactotum(void)

+{

+	return -1;

+}

+