dropbear: update to latest

package/dropbear/Makefile

@@ -4,9 +4,9 @@
 include $(ADK_TOPDIR)/rules.mk
 
 PKG_NAME:=		dropbear
-PKG_VERSION:=		2018.76
+PKG_VERSION:=		2020.81
 PKG_RELEASE:=		1
-PKG_HASH:=		f2fb9167eca8cf93456a5fc1d4faf709902a3ab70dd44e352f3acbc3ffdaea65
+PKG_HASH:=		48235d10b37775dbda59341ac0c4b239b82ad6318c31568b985730c788aac53b
 PKG_DESCR:=		ssh server/client designed for embedded systems
 PKG_SECTION:=		net/security
 PKG_URL:=		http://matt.ucc.asn.au/dropbear/

package/dropbear/patches/patch-Makefile_in

@@ -1,6 +1,6 @@
---- dropbear-2014.63.orig/Makefile.in	2014-02-19 15:05:24.000000000 +0100
-+++ dropbear-2014.63/Makefile.in	2014-03-01 18:27:41.000000000 +0100
-@@ -81,10 +81,10 @@ AR=@AR@
+--- dropbear-2020.81.orig/Makefile.in	2020-10-29 14:35:50.000000000 +0100
++++ dropbear-2020.81/Makefile.in	2020-11-04 03:02:49.901343218 +0100
+@@ -106,10 +106,10 @@ AR=@AR@
  RANLIB=@RANLIB@
  STRIP=@STRIP@
  INSTALL=@INSTALL@
@@ -15,16 +15,16 @@
  
  EXEEXT=@EXEEXT@
  
-@@ -163,7 +163,7 @@ dropbearkey: $(dropbearkeyobjs)
+@@ -198,7 +198,7 @@ dropbearkey: $(dropbearkeyobjs)
  dropbearconvert: $(dropbearconvertobjs)
  
  dropbear: $(HEADERS) $(LIBTOM_DEPS) Makefile
--	$(CC) $(LDFLAGS) -o $@$(EXEEXT) $($@objs) $(LIBTOM_LIBS) $(LIBS) @CRYPTLIB@
-+	$(CC) $(LDFLAGS) -o $@$(EXEEXT) $($@objs) $(LIBTOM_LIBS) $(LIBS)
+-	$(CC) $(LDFLAGS) -o $@$(EXEEXT) $($@objs) $(LIBTOM_LIBS) $(LIBS) @CRYPTLIB@ $(PLUGIN_LIBS)
++	$(CC) $(LDFLAGS) -o $@$(EXEEXT) $($@objs) $(LIBTOM_LIBS) $(LIBS) $(PLUGIN_LIBS)
  
  dbclient: $(HEADERS) $(LIBTOM_DEPS) Makefile
  	$(CC) $(LDFLAGS) -o $@$(EXEEXT) $($@objs) $(LIBTOM_LIBS) $(LIBS)
-@@ -184,7 +184,7 @@ ifeq ($(MULTI),1)
+@@ -219,7 +219,7 @@ ifeq ($(MULTI),1)
  endif
  
  dropbearmulti$(EXEEXT): $(HEADERS) $(MULTIOBJS) $(LIBTOM_DEPS) Makefile

package/dropbear/patches/patch-svr-authpubkey_c

@@ -1,6 +1,6 @@
---- dropbear-2017.75.orig/svr-authpubkey.c	2017-05-18 16:47:02.000000000 +0200
-+++ dropbear-2017.75/svr-authpubkey.c	2017-07-06 19:45:36.765143131 +0200
-@@ -220,24 +220,33 @@ static int checkpubkey(char* algo, unsig
+--- dropbear-2020.81.orig/svr-authpubkey.c	2020-10-29 14:35:50.000000000 +0100
++++ dropbear-2020.81/svr-authpubkey.c	2020-11-04 03:14:22.641017199 +0100
+@@ -386,26 +386,32 @@ static int checkpubkey(const char* keyal
  		goto out;
  	}
  
@@ -14,14 +14,6 @@
 -				ses.authstate.pw_dir);
 +	/* special case for root authorized_keys in /etc/dropbear/authorized_keys */
 +	if (ses.authstate.pw_uid != 0) {
- 
--	/* open the file as the authenticating user. */
--	origuid = getuid();
--	origgid = getgid();
--	if ((setegid(ses.authstate.pw_gid)) < 0 ||
--		(seteuid(ses.authstate.pw_uid)) < 0) {
--		dropbear_exit("Failed to set euid");
--	}
 +		/* we don't need to check pw and pw_dir for validity, since
 +		 * its been done in checkpubkeyperms. */
 +		len = strlen(ses.authstate.pw_dir);
@@ -31,7 +23,15 @@
 +		snprintf(filename, len + 22, "%s/.ssh/authorized_keys", 
 +					ses.authstate.pw_dir);
  
--	authfile = fopen(filename, "r");
+-#if DROPBEAR_SVR_MULTIUSER
+-	/* open the file as the authenticating user. */
+-	origuid = getuid();
+-	origgid = getgid();
+-	if ((setegid(ses.authstate.pw_gid)) < 0 ||
+-		(seteuid(ses.authstate.pw_uid)) < 0) {
+-		dropbear_exit("Failed to set euid");
+-	}
+-#endif
 +		/* open the file as the authenticating user. */
 +		origuid = getuid();
 +		origgid = getgid();
@@ -39,7 +39,8 @@
 +			(seteuid(ses.authstate.pw_uid)) < 0) {
 +			dropbear_exit("Failed to set euid");
 +		}
-+
+ 
+-	authfile = fopen(filename, "r");
 +		authfile = fopen(filename, "r");
 +
 +	} else {
@@ -48,49 +49,53 @@
 +		authfile = fopen("/etc/dropbear/authorized_keys","r");
 +	}
  
+ #if DROPBEAR_SVR_MULTIUSER
  	if ((seteuid(origuid)) < 0 ||
- 		(setegid(origgid)) < 0) {
-@@ -396,26 +405,39 @@ static int checkpubkeyperms() {
+@@ -474,27 +480,37 @@ static int checkpubkeyperms() {
  		goto out;
  	}
  
 -	/* allocate max required pathname storage,
 -	 * = path + "/.ssh/authorized_keys" + '\0' = pathlen + 22 */
--	filename = m_malloc(len + 22);
--	strncpy(filename, ses.authstate.pw_dir, len+1);
+-	len += 22;
+-	filename = m_malloc(len);
+-	strlcpy(filename, ses.authstate.pw_dir, len);
 +	if (ses.authstate.pw_uid != 0) {
- 
--	/* check ~ */
--	if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
--		goto out;
--	}
 +		/* allocate max required pathname storage,
 +		 * = path + "/.ssh/authorized_keys" + '\0' = pathlen + 22 */
 +		filename = m_malloc(len + 22);
 +		strncpy(filename, ses.authstate.pw_dir, len+1);
- 
--	/* check ~/.ssh */
--	strncat(filename, "/.ssh", 5); /* strlen("/.ssh") == 5 */
--	if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
--		goto out;
--	}
++ 
 +		/* check ~ */
 +		if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
 +			goto out;
 +		}
-+
+ 
+-	/* check ~ */
+-	if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
+-		goto out;
+-	}
 +		/* check ~/.ssh */
 +		strncat(filename, "/.ssh", 5); /* strlen("/.ssh") == 5 */
 +		if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
 +			goto out;
 +		}
-+
+ 
+-	/* check ~/.ssh */
+-	strlcat(filename, "/.ssh", len);
+-	if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
+-		goto out;
+-	}
 +		/* now check ~/.ssh/authorized_keys */
 +		strncat(filename, "/authorized_keys", 16);
 +		if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
 +			goto out;
 +		}
-+
+ 
+-	/* now check ~/.ssh/authorized_keys */
+-	strlcat(filename, "/authorized_keys", len);
+-	if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
+-		goto out;
 +	} else {
 +
 +		if (checkfileperm("/etc/dropbear") != DROPBEAR_SUCCESS) {
@@ -99,11 +104,6 @@
 +		if (checkfileperm("/etc/dropbear/authorized_keys") != DROPBEAR_SUCCESS) {
 +			goto out;
 +		}
- 
--	/* now check ~/.ssh/authorized_keys */
--	strncat(filename, "/authorized_keys", 16);
--	if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
--		goto out;
  	}
  
  	/* file looks ok, return success */

package/dropbear/patches/patch-svr-main_c

@@ -0,0 +1,15 @@
+--- dropbear-2020.81.orig/svr-main.c	2020-10-29 14:35:50.000000000 +0100
++++ dropbear-2020.81/svr-main.c	2020-11-04 05:04:33.736369225 +0100
+@@ -278,8 +278,12 @@ static void main_noinetd() {
+ #if DEBUG_NOFORK
+ 			fork_ret = 0;
+ #else
++#if DROPBEAR_VFORK
++			fork_ret = vfork();
++#else
+ 			fork_ret = fork();
+ #endif
++#endif
+ 			if (fork_ret < 0) {
+ 				dropbear_log(LOG_WARNING, "Error forking: %s", strerror(errno));
+ 				goto out;