shithub: drawterm-fdroid

--- a/aan.c

+++ b/aan.c

@@ -1,7 +1,6 @@

 #include <u.h>

 #include <libc.h>

 #include <fcall.h>

-#include "drawterm.h"

 enum {

 	Hdrsz = 3*4,

--- a/cpu.c

+++ b/cpu.c

@@ -23,6 +23,8 @@

 static char	*rexcall(int*, char*, char*);

 static char 	*keyspec = "";

 static AuthInfo *p9any(int);

+static int	getkey(Authkey*, char*, char*, char*);

+static int	findkey(Authkey*, char*, char*, char*);

 static char	*host;

 static int	nokbd;

@@ -624,8 +626,7 @@

 AuthInfo*

 p9any(int fd)

-	char buf[1024], buf2[1024], *bbuf, *p, *proto, *dom, *u;

-	char *pass;

+	char buf[1024], buf2[1024], *bbuf, *p, *proto, *dom;

 	uchar crand[2*NONCELEN], cchal[CHALLEN], y[PAKYLEN];

 	char tbuf[2*MAXTICKETLEN+MAXAUTHENTLEN+PAKYLEN], trbuf[TICKREQLEN+PAKYLEN];

 	Authkey authkey;

@@ -688,23 +689,15 @@

 	if(readn(fd, trbuf, n) != n || convM2TR(trbuf, TICKREQLEN, &tr) <= 0)

 		fatal(1, "cannot read ticket request in p9sk1");

-	u = user;

-	pass = findkey(&u, tr.authdom, proto);

-	if(pass == nil)

-	again:

-		pass = getkey(u, tr.authdom, proto);

-	if(pass == nil)

-		fatal(1, "no password");

+	if(!findkey(&authkey, user, tr.authdom, proto)){

+again:		if(!getkey(&authkey, user, tr.authdom, proto))

+			fatal(1, "no password");

+	}

-	passtokey(&authkey, pass);

-	memset(pass, 0, strlen(pass));

-	free(pass);

+	strecpy(tr.hostid, tr.hostid+sizeof tr.hostid, user);

+	strecpy(tr.uid, tr.uid+sizeof tr.uid, user);

-	strecpy(tr.hostid, tr.hostid+sizeof tr.hostid, u);

-	strecpy(tr.uid, tr.uid+sizeof tr.uid, u);

 	if(dp9ik){

-		authpak_hash(&authkey, tr.hostid);

 		memmove(y, trbuf+TICKREQLEN, PAKYLEN);

 		n = gettickets(&authkey, &tr, y, tbuf, sizeof(tbuf));

 	} else {

@@ -786,4 +779,117 @@

 	free(proto);

 	return ai;

+}

+static int

+unhex(char c)

+{

+	if('0' <= c && c <= '9')

+		return c-'0';

+	if('a' <= c && c <= 'f')

+		return c-'a'+10;

+	if('A' <= c && c <= 'F')

+		return c-'A'+10;

+	abort();

+	return -1;

+}

+static int

+hexparse(char *hex, uchar *dat, int ndat)

+{

+	int i;

+	if(strlen(hex) != 2*ndat)

+		return -1;

+	if(hex[strspn(hex, "0123456789abcdefABCDEF")] != '\0')

+		return -1;

+	for(i=0; i<ndat; i++)

+		dat[i] = (unhex(hex[2*i])<<4)|unhex(hex[2*i+1]);

+	return 0;

+}

+static int

+findkey(Authkey *key, char *user, char *dom, char *proto)

+{

+	char buf[1024], *f[50], *p, *ep, *nextp, *hex, *pass, *id, *role;

+	int nf, haveproto,  havedom, i;

+	for(p=secstorebuf; *p; p=nextp){

+		nextp = strchr(p, '\n');

+		if(nextp == nil){

+			ep = p+strlen(p);

+			nextp = "";

+		}else{

+			ep = nextp++;

+		}

+		if(ep-p >= sizeof buf){

+			print("warning: skipping long line in secstore factotum file\n");

+			continue;

+		}

+		memmove(buf, p, ep-p);

+		buf[ep-p] = 0;

+		nf = tokenize(buf, f, nelem(f));

+		if(nf == 0 || strcmp(f[0], "key") != 0)

+			continue;

+		id = pass = hex = role = nil;

+		havedom = haveproto = 0;

+		for(i=1; i<nf; i++){

+			if(strncmp(f[i], "user=", 5) == 0)

+				id = f[i]+5;

+			if(strncmp(f[i], "!password=", 10) == 0)

+				pass = f[i]+10;

+			if(strncmp(f[i], "!hex=", 5) == 0)

+				hex = f[i]+5;

+			if(strncmp(f[i], "role=", 5) == 0)

+				role = f[i]+5;

+			if(strncmp(f[i], "dom=", 4) == 0 && strcmp(f[i]+4, dom) == 0)

+				havedom = 1;

+			if(strncmp(f[i], "proto=", 6) == 0 && strcmp(f[i]+6, proto) == 0)

+				haveproto = 1;

+		}

+		if(!haveproto || !havedom)

+			continue;

+		if(role != nil && strcmp(role, "client") != 0)

+			continue;

+		if(id == nil || strcmp(user, id) != 0)

+			continue;

+		if(pass == nil && hex == nil)

+			continue;

+		if(hex != nil){

+			memset(key, 0, sizeof(*key));

+			if(strcmp(proto, "dp9ik") == 0) {

+				if(hexparse(hex, key->aes, AESKEYLEN) != 0)

+					continue;

+			} else {

+				if(hexparse(hex, (uchar*)key->des, DESKEYLEN) != 0)

+					continue;

+			}

+		} else {

+			passtokey(key, pass);

+		}

+		if(strcmp(proto, "dp9ik") == 0)

+			authpak_hash(key, user);

+		memset(buf, 0, sizeof buf);

+		return 1;

+	}

+	memset(buf, 0, sizeof buf);

+	return 0;

+}

+static int

+getkey(Authkey *key, char *user, char *dom, char *proto)

+{

+	char buf[1024], *pass;

+	snprint(buf, sizeof buf, "%s@%s %s password", user, dom, proto);

+	pass = readcons(buf, nil, 1);

+	memset(buf, 0, sizeof buf);

+	if(pass != nil){

+		snprint(secstorebuf, sizeof(secstorebuf), "key proto=%q dom=%q user=%q !password=%q\n",

+			proto, dom, user, pass);

+		memset(pass, 0, strlen(pass));

+		free(pass);

+		return findkey(key, user, dom, proto);

+	}

+	return 0;

--- a/drawterm.h

+++ b/drawterm.h

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

 extern char *readcons(char *prompt, char *def, int secret);

 extern int exportfs(int);

 extern char *user;

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

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

 extern int dialfactotum(void);

 extern char *getuser(void);

 extern void cpumain(int, char**);

--- a/kern/dat.h

+++ b/kern/dat.h

@@ -1,5 +1,4 @@

 #define	KNAMELEN		28	/* max length of name held in kernel */

-#define	DOMLEN			64

 #define	BLOCKALIGN		8

--- a/kern/devcons.c

+++ b/kern/devcons.c

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

 #include 	"keyboard.h"

+#include	<authsrv.h>

 void	(*consdebug)(void) = 0;

 void	(*screenputs)(char*, int) = 0;

--- a/main.c

+++ b/main.c

@@ -3,7 +3,6 @@

 #include "kern/dat.h"

 #include "kern/fns.h"

 #include "user.h"

 #include "drawterm.h"

 char *argv0;

@@ -69,63 +68,3 @@

 	cpumain(argc, argv);

 	return 0;

-char*

-getkey(char *user, char *dom, char *proto)

-{

-	char buf[1024], *key;

-	snprint(buf, sizeof buf, "%s@%s %s password", user, dom, proto);

-	key = readcons(buf, nil, 1);

-	if(key != nil)

-		snprint(secstorebuf, sizeof(secstorebuf), "key proto=%q dom=%q user=%q !password=%q\n",

-			proto, dom, user, key);

-	return key;

-}

-char*

-findkey(char **puser, char *dom, char *proto)

-{

-	char buf[1024], *f[50], *p, *ep, *nextp, *pass, *user;

-	int nf, haveproto,  havedom, i;

-	for(p=secstorebuf; *p; p=nextp){

-		nextp = strchr(p, '\n');

-		if(nextp == nil){

-			ep = p+strlen(p);

-			nextp = "";

-		}else{

-			ep = nextp++;

-		}

-		if(ep-p >= sizeof buf){

-			print("warning: skipping long line in secstore factotum file\n");

-			continue;

-		}

-		memmove(buf, p, ep-p);

-		buf[ep-p] = 0;

-		nf = tokenize(buf, f, nelem(f));

-		if(nf == 0 || strcmp(f[0], "key") != 0)

-			continue;

-		pass = nil;

-		haveproto = havedom = 0;

-		user = nil;

-		for(i=1; i<nf; i++){

-			if(strncmp(f[i], "user=", 5) == 0)

-				user = f[i]+5;

-			if(strncmp(f[i], "!password=", 10) == 0)

-				pass = f[i]+10;

-			if(strncmp(f[i], "dom=", 4) == 0 && strcmp(f[i]+4, dom) == 0)

-				havedom = 1;

-			if(strncmp(f[i], "proto=", 6) == 0 && strcmp(f[i]+6, proto) == 0)

-				haveproto = 1;

-		}

-		if(!haveproto || !havedom || !pass || !user)

-			continue;

-		*puser = estrdup(user);

-		pass = estrdup(pass);

-		memset(buf, 0, sizeof buf);

-		return pass;

-	}

-	return nil;

-}