code: drawterm

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provide secstore key separation for proto p9sk1 and dp9ik

the passwords for p9sk1 and dp9ik might differ.

--- a/cpu.c

+++ b/cpu.c

@@ -197,13 +197,13 @@

 		usage();

 	if(system == nil)

-		system = readcons("cpuserver", "cpu", 0);

+		system = readcons("cpu", "cpu", 0);

 	if(user == nil)

 		user = readcons("user", "glenda", 0);

 	if(authserver == nil)

-		authserver = readcons("authserver", system, 0);

+		authserver = readcons("auth", system, 0);

 	if(mountfactotum() < 0){

 		if(secstoreserver == nil)

@@ -613,6 +613,7 @@

 	}

 	if(proto == nil)

 		fatal(1, "server did not offer p9sk1 or dp9ik");

+	proto = estrdup(proto);

 	sprint(buf2, "%s %s", proto, dom);

 	if(write(fd, buf2, strlen(buf2)+1) != strlen(buf2)+1)

 		fatal(1, "cannot write user/domain choice in p9any");

@@ -635,15 +636,16 @@

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

 	u = user;

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

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

 	if(pass == nil)

 	again:

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

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

 	if(pass == nil)

 		fatal(1, "no password");

 	passtokey(&authkey, pass);

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

+	free(pass);

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

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

@@ -706,8 +708,8 @@

 	// print("i am %s there.\n", t.suid);

 	ai = mallocz(sizeof(AuthInfo), 1);

-	ai->suid = strdup(t.suid);

-	ai->cuid = strdup(t.cuid);

+	ai->suid = estrdup(t.suid);

+	ai->cuid = estrdup(t.cuid);

 	if(dp9ik){

 		static char info[] = "Plan 9 session secret";

 		ai->nsecret = 256;

@@ -728,6 +730,7 @@

 	memset(&authkey, 0, sizeof(authkey));

 	memset(cchal, 0, sizeof(cchal));

 	memset(crand, 0, sizeof(crand));

+	free(proto);

 	return ai;

 }

--- a/drawterm.h

+++ b/drawterm.h

@@ -6,8 +6,9 @@

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

 extern int exportfs(int, int);

 extern char *user;

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

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

+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**);

+extern char *estrdup(char*);

--- a/main.c

+++ b/main.c

@@ -70,16 +70,16 @@

 }

 char*

-getkey(char *user, char *dom)

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

 {

 	char buf[1024];

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

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

 	return readcons(buf, nil, 1);

 }

 char*

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

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

 {

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

 	int nf, haveproto,  havedom, i;

@@ -111,13 +111,13 @@

 				pass = f[i]+10;

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

 				havedom = 1;

-			if(strcmp(f[i], "proto=p9sk1") == 0 || strcmp(f[i], "proto=dp9ik") == 0)

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

 				haveproto = 1;

 		}

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

 			continue;

-		*puser = strdup(user);

-		pass = strdup(pass);

+		*puser = estrdup(user);

+		pass = estrdup(pass);

 		memset(buf, 0, sizeof buf);

 		return pass;

 	}

--- a/readcons.c

+++ b/readcons.c

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

 erealloc(void *v, ulong n)

 {

 	v = realloc(v, n);

-	if(v == nil)

+	if(v == nil && n != 0)

 		sysfatal("out of memory");

 	return v;

 }

--- a/secstore.c

+++ b/secstore.c

@@ -560,7 +560,7 @@

 	}

 	*eol = 0;

 	if(pS)

-		*pS = strdup(S);

+		*pS = estrdup(S);

 	strtomp(hexmu, nil, 64, mu);

 	mpexp(mu, x, pak->p, sigma);

 	hexsigma = mptoa(sigma, 64, nil, 0);

@@ -615,7 +615,7 @@

 	conn = nil;

 	rv = nil;

 	if(password != nil && *password)

-		pass = strdup(password);

+		pass = estrdup(password);

 	else

 		pass = readcons("secstore password", nil, 1);

 	if(pass==nil || strlen(pass)==0){