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dropbear: update to 2018.76 (#2356)

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* dropbear: update to 2018.76

* dropbear: fix hardcoded paths

* dropbear: enable scp
This commit is contained in:
Leonid Plyushch 2018-04-22 22:22:48 +03:00 committed by Fredrik Fornwall
parent a6aa402848
commit c4061e081f
13 changed files with 258 additions and 162 deletions
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12
packages/dropbear/Makefile.in.patch Normal file
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@ -0,0 +1,12 @@
diff -uNr dropbear-2018.76/Makefile.in dropbear-2018.76.mod/Makefile.in
--- dropbear-2018.76/Makefile.in 2018-02-27 16:25:10.000000000 +0200
+++ dropbear-2018.76.mod/Makefile.in 2018-04-21 14:05:03.923792282 +0300
@@ -9,7 +9,7 @@
# dbclient functionality, and includes the progress-bar functionality in scp.
ifndef PROGRAMS
- PROGRAMS=dropbear dbclient dropbearkey dropbearconvert
+ PROGRAMS=dropbear dbclient dropbearkey dropbearconvert scp
endif
STATIC_LTC=libtomcrypt/libtomcrypt.a

14
packages/dropbear/build.sh
View File

@ -1,15 +1,19 @@
TERMUX_PKG_HOMEPAGE=https://matt.ucc.asn.au/dropbear/dropbear.html
TERMUX_PKG_DESCRIPTION="Small SSH server and client"
TERMUX_PKG_DEPENDS="libutil"
TERMUX_PKG_VERSION=2017.75
TERMUX_PKG_REVISION=2
TERMUX_PKG_DEPENDS="libutil, readline"
TERMUX_PKG_CONFLICTS="openssh"
TERMUX_PKG_VERSION=2018.76
TERMUX_PKG_SRCURL=https://matt.ucc.asn.au/dropbear/releases/dropbear-${TERMUX_PKG_VERSION}.tar.bz2
TERMUX_PKG_SHA256=6cbc1dcb1c9709d226dff669e5604172a18cf5dbf9a201474d5618ae4465098c
TERMUX_PKG_SHA256=f2fb9167eca8cf93456a5fc1d4faf709902a3ab70dd44e352f3acbc3ffdaea65
TERMUX_PKG_EXTRA_CONFIGURE_ARGS="--disable-syslog --disable-utmp --disable-utmpx --disable-wtmp"
TERMUX_PKG_BUILD_IN_SRC="yes"
TERMUX_PKG_CLANG=no
# Avoid linking to libcrypt for server password authentication:
TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" ac_cv_lib_crypt_crypt=no"
# use own implementation of getpass
TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" ac_cv_func_getpass=yes LIBS=-lreadline"
# build a multi-call binary
TERMUX_PKG_EXTRA_MAKE_ARGS="MULTI=1"
TERMUX_PKG_BUILD_IN_SRC="yes"
termux_step_create_debscripts () {
echo "#!$TERMUX_PREFIX/bin/sh" > postinst

42
packages/dropbear/cli-auth.c.patch Normal file
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@ -0,0 +1,42 @@
diff -uNr dropbear-2018.76/cli-auth.c dropbear-2018.76.mod/cli-auth.c
--- dropbear-2018.76/cli-auth.c 2018-02-27 16:25:10.000000000 +0200
+++ dropbear-2018.76.mod/cli-auth.c 2018-04-21 13:44:51.797063206 +0300
@@ -32,6 +32,38 @@
#include "packet.h"
#include "runopts.h"
+
+// getpass implementation
+#ifdef __ANDROID__
+#include <termios.h>
+#include <readline/readline.h>
+
+static char* getpass(const char *prompt) {
+ struct termios term_old, term_new;
+ int nread;
+
+ /* Turn echoing off and fail if we can't. */
+ if (tcgetattr (0, &term_old) != 0) {
+ return NULL;
+ }
+
+ term_new = term_old;
+ term_new.c_lflag &= ~ECHO;
+
+ if (tcsetattr (0, TCSAFLUSH, &term_new) != 0) {
+ return NULL;
+ }
+
+ /* Read the password. */
+ char *password = readline(prompt);
+
+ /* Restore terminal. */
+ (void) tcsetattr (0, TCSAFLUSH, &term_old);
+
+ return password;
+}
+#endif
+
void cli_authinitialise() {
memset(&ses.authstate, 0, sizeof(ses.authstate));

12
packages/dropbear/common-session.c.patch Normal file
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@ -0,0 +1,12 @@
diff -uNr dropbear-2018.76/common-session.c dropbear-2018.76.mod/common-session.c
--- dropbear-2018.76/common-session.c 2018-02-27 16:25:10.000000000 +0200
+++ dropbear-2018.76.mod/common-session.c 2018-04-21 13:49:06.633742995 +0300
@@ -570,7 +570,7 @@
const char* get_user_shell() {
/* an empty shell should be interpreted as "/bin/sh" */
if (ses.authstate.pw_shell[0] == '\0') {
- return "/bin/sh";
+ return "@TERMUX_PREFIX@/bin/sh";
} else {
return ses.authstate.pw_shell;
}

21
packages/dropbear/compat.c.patch Normal file
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@ -0,0 +1,21 @@
diff -uNr dropbear-2018.76/compat.c dropbear-2018.76.mod/compat.c
--- dropbear-2018.76/compat.c 2018-02-27 16:25:10.000000000 +0200
+++ dropbear-2018.76.mod/compat.c 2018-04-21 13:47:36.443738351 +0300
@@ -232,7 +232,7 @@
static char **initshells() {
/* don't touch this list. */
- static const char *okshells[] = { "/bin/sh", "/bin/csh", NULL };
+ static const char *okshells[] = { "@TERMUX_PREFIX@/bin/sh", "@TERMUX_PREFIX@/bin/csh", NULL };
register char **sp, *cp;
register FILE *fp;
struct stat statb;
@@ -244,7 +244,7 @@
if (strings != NULL)
free(strings);
strings = NULL;
- if ((fp = fopen("/etc/shells", "rc")) == NULL)
+ if ((fp = fopen("@TERMUX_PREFIX@/etc/shells", "rc")) == NULL)
return (char **) okshells;
if (fstat(fileno(fp), &statb) == -1) {
(void)fclose(fp);

91
packages/dropbear/options.h.patch → packages/dropbear/default_options.h.patch
View File

@ -1,81 +1,77 @@
diff -u -r ../dropbear-2017.75/options.h ./options.h
--- ../dropbear-2017.75/options.h 2017-05-18 16:47:02.000000000 +0200
+++ ./options.h 2018-01-24 11:01:37.013064455 +0100
@@ -11,7 +11,7 @@
/* IMPORTANT: Many options will require "make clean" after changes */
diff -uNr dropbear-2018.76/default_options.h dropbear-2018.76.mod/default_options.h
--- dropbear-2018.76/default_options.h 2018-02-27 16:25:10.000000000 +0200
+++ dropbear-2018.76.mod/default_options.h 2018-04-21 13:44:59.120396918 +0300
@@ -13,15 +13,15 @@
IMPORTANT: Some options will require "make clean" after changes */
#ifndef DROPBEAR_DEFPORT
-#define DROPBEAR_DEFPORT "22"
+#define DROPBEAR_DEFPORT "8022"
#endif
#ifndef DROPBEAR_DEFADDRESS
@@ -21,13 +21,13 @@
/* Listen on all interfaces */
#define DROPBEAR_DEFADDRESS ""
/* Default hostkey paths - these can be specified on the command line */
#ifndef DSS_PRIV_FILENAME
-#define DSS_PRIV_FILENAME "/etc/dropbear/dropbear_dss_host_key"
+#define DSS_PRIV_FILENAME "@TERMUX_PREFIX@/etc/dropbear/dropbear_dss_host_key"
#endif
#ifndef RSA_PRIV_FILENAME
-#define RSA_PRIV_FILENAME "/etc/dropbear/dropbear_rsa_host_key"
+#define RSA_PRIV_FILENAME "@TERMUX_PREFIX@/etc/dropbear/dropbear_rsa_host_key"
#endif
#ifndef ECDSA_PRIV_FILENAME
-#define ECDSA_PRIV_FILENAME "/etc/dropbear/dropbear_ecdsa_host_key"
+#define DSS_PRIV_FILENAME "@TERMUX_PREFIX@/etc/dropbear/dropbear_dss_host_key"
+#define RSA_PRIV_FILENAME "@TERMUX_PREFIX@/etc/dropbear/dropbear_rsa_host_key"
+#define ECDSA_PRIV_FILENAME "@TERMUX_PREFIX@/etc/dropbear/dropbear_ecdsa_host_key"
#endif
/* Set NON_INETD_MODE if you require daemon functionality (ie Dropbear listens
@@ -52,7 +52,7 @@
several kB in binary size however will make the symmetrical ciphers and hashes
slower, perhaps by 50%. Recommended for small systems that aren't doing
much traffic. */
-#define DROPBEAR_SMALL_CODE
* on chosen ports and keeps accepting connections. This is the default.
@@ -44,7 +44,7 @@
* several kB in binary size however will make the symmetrical ciphers and hashes
* slower, perhaps by 50%. Recommended for small systems that aren't doing
* much traffic. */
-#define DROPBEAR_SMALL_CODE 1
+#undef DROPBEAR_SMALL_CODE
/* Enable X11 Forwarding - server only */
#define ENABLE_X11FWD
@@ -198,7 +198,7 @@
#define DROPBEAR_X11FWD 1
@@ -175,11 +175,11 @@
/* The MOTD file path */
#ifndef MOTD_FILENAME
/* Whether to print the message of the day (MOTD). */
#define DO_MOTD 0
-#define MOTD_FILENAME "/etc/motd"
+#define MOTD_FILENAME "@TERMUX_PREFIX@/etc/motd"
#endif
/* Authentication Types - at least one required.
@@ -213,7 +213,7 @@
RFC Draft requires pubkey auth, and recommends password */
-#define DROPBEAR_SVR_PASSWORD_AUTH 1
+#undef DROPBEAR_SVR_PASSWORD_AUTH
/* Note: PAM auth is quite simple and only works for PAM modules which just do
* a simple "Login: " "Password: " (you can edit the strings in svr-authpam.c).
@@ -222,7 +222,7 @@
/* Set this to use PRNGD or EGD instead of /dev/urandom */
#define DROPBEAR_USE_PRNGD 0
-#define DROPBEAR_PRNGD_SOCKET "/var/run/dropbear-rng"
+#define DROPBEAR_PRNGD_SOCKET "@TERMUX_PREFIX@/var/run/dropbear-rng"
/* Specify the number of clients we will allow to be connected but
* not yet authenticated. After this limit, connections are rejected */
@@ -239,22 +239,22 @@
/* This requires crypt() */
#ifdef HAVE_CRYPT
-#define ENABLE_SVR_PASSWORD_AUTH
+#undef ENABLE_SVR_PASSWORD_AUTH
#endif
/* PAM requires ./configure --enable-pam */
/*#define ENABLE_SVR_PAM_AUTH */
@@ -287,25 +287,25 @@
/* The default file to store the daemon's process ID, for shutdown
scripts etc. This can be overridden with the -P flag */
#ifndef DROPBEAR_PIDFILE
-#define DROPBEAR_PIDFILE "/var/run/dropbear.pid"
+#define DROPBEAR_PIDFILE "@TERMUX_PREFIX@/var/run/dropbear.pid"
#endif
/* The command to invoke for xauth when using X11 forwarding.
* "-q" for quiet */
#ifndef XAUTH_COMMAND
-#define XAUTH_COMMAND "/usr/bin/xauth -q"
+#define XAUTH_COMMAND "@TERMUX_PREFIX@/bin/xauth -q"
#endif
/* if you want to enable running an sftp server (such as the one included with
* OpenSSH), set the path below. If the path isn't defined, sftp will not
* be enabled */
#ifndef SFTPSERVER_PATH
* OpenSSH), set the path below and set DROPBEAR_SFTPSERVER.
* The sftp-server program is not provided by Dropbear itself */
#define DROPBEAR_SFTPSERVER 1
-#define SFTPSERVER_PATH "/usr/libexec/sftp-server"
+#define SFTPSERVER_PATH "@TERMUX_PREFIX@/libexec/sftp-server"
#endif
/* This is used by the scp binary when used as a client binary. If you're
* not using the Dropbear client, you'll need to change it */
@ -84,12 +80,11 @@ diff -u -r ../dropbear-2017.75/options.h ./options.h
/* Whether to log commands executed by a client. This only logs the
* (single) command sent to the server, not what a user did in a
@@ -347,7 +347,7 @@
@@ -290,6 +290,6 @@
#define DEFAULT_IDLE_TIMEOUT 0
/* The default path. This will often get replaced by the shell */
-#define DEFAULT_PATH "/usr/bin:/bin"
+#define DEFAULT_PATH "@TERMUX_PREFIX@/bin"
+#define DEFAULT_PATH "@TERMUX_PREFIX@/bin:@TERMUX_PREFIX@/bin/applets"
/* Some other defines (that mostly should be left alone) are defined
* in sysoptions.h */
#endif /* DROPBEAR_DEFAULT_OPTIONS_H_ */

95
packages/dropbear/dropbear.patch
View File

@ -1,95 +0,0 @@
diff -u -r ../dropbear-2013.62/cli-auth.c ./cli-auth.c
--- ../dropbear-2013.62/cli-auth.c 2013-12-03 14:39:15.000000000 +0100
+++ ./cli-auth.c 2014-01-05 21:21:37.926812382 +0100
@@ -32,6 +32,10 @@
#include "packet.h"
#include "runopts.h"
+char * getpass (const char *prompt) {
+ return "";
+}
+
void cli_authinitialise() {
memset(&ses.authstate, 0, sizeof(ses.authstate));
#ifdef ENABLE_CLI_ANYTCPFWD
diff -u -r ../dropbear-2013.62/sshpty.c ./sshpty.c
--- ../dropbear-2013.62/sshpty.c 2013-12-03 14:39:15.000000000 +0100
+++ ./sshpty.c 2014-01-05 21:21:37.930812382 +0100
@@ -22,6 +22,10 @@
#include "errno.h"
#include "sshpty.h"
+#ifdef __ANDROID__
+# define USE_DEV_PTMX 1
+#endif
+
/* Pty allocated with _getpty gets broken if we do I_PUSH:es to it. */
#if defined(HAVE__GETPTY) || defined(HAVE_OPENPTY)
#undef HAVE_DEV_PTMX
@@ -380,6 +384,7 @@
tty_name, strerror(errno));
}
+ /*
if (st.st_uid != pw->pw_uid || st.st_gid != gid) {
if (chown(tty_name, pw->pw_uid, gid) < 0) {
if (errno == EROFS &&
@@ -409,4 +414,5 @@
}
}
}
+ */
}
diff -u -r ../dropbear-2013.62/svr-agentfwd.c ./svr-agentfwd.c
--- ../dropbear-2013.62/svr-agentfwd.c 2013-12-03 14:39:15.000000000 +0100
+++ ./svr-agentfwd.c 2014-01-05 21:21:37.930812382 +0100
@@ -218,10 +218,12 @@
/* drop to user privs to make the dir/file */
uid = getuid();
gid = getgid();
+ /*
if ((setegid(ses.authstate.pw_gid)) < 0 ||
(seteuid(ses.authstate.pw_uid)) < 0) {
dropbear_exit("Failed to set euid");
}
+ */
memset((void*)&addr, 0x0, sizeof(addr));
addr.sun_family = AF_UNIX;
diff -u -r ../dropbear-2013.62/svr-chansession.c ./svr-chansession.c
--- ../dropbear-2013.62/svr-chansession.c 2013-12-03 14:39:15.000000000 +0100
+++ ./svr-chansession.c 2014-01-05 21:32:15.438797159 +0100
@@ -874,6 +874,8 @@
#endif
/* clear environment */
+ /* termux: do not clear environment on android */
+#ifndef __ANDROID__
/* if we're debugging using valgrind etc, we need to keep the LD_PRELOAD
* etc. This is hazardous, so should only be used for debugging. */
#ifndef DEBUG_VALGRIND
@@ -886,6 +888,7 @@
}
#endif /* HAVE_CLEARENV */
#endif /* DEBUG_VALGRIND */
+#endif /* __ANDROID__ */
/* We can only change uid/gid as root ... */
if (getuid() == 0) {
@@ -911,12 +914,14 @@
}
}
+ /* termux: do not modify environment since we did not clean it */
+#ifndef __ANDROID__
/* set env vars */
addnewvar("USER", ses.authstate.pw_name);
addnewvar("LOGNAME", ses.authstate.pw_name);
addnewvar("HOME", ses.authstate.pw_dir);
addnewvar("SHELL", get_user_shell());
- addnewvar("PATH", DEFAULT_PATH);
+#endif /* __ANDROID__ */
if (chansess->term != NULL) {
addnewvar("TERM", chansess->term);
}

10
packages/dropbear/gensignkey.c.patch
View File

@ -1,7 +1,7 @@
diff -u -r ../dropbear-2017.75/gensignkey.c ./gensignkey.c
--- ../dropbear-2017.75/gensignkey.c 2017-05-18 16:47:01.000000000 +0200
+++ ./gensignkey.c 2017-06-13 23:50:59.888597482 +0200
@@ -137,6 +137,16 @@
diff -uNr dropbear-2018.76/gensignkey.c dropbear-2018.76.mod/gensignkey.c
--- dropbear-2018.76/gensignkey.c 2018-02-27 16:25:10.000000000 +0200
+++ dropbear-2018.76.mod/gensignkey.c 2018-04-21 13:45:22.973731479 +0300
@@ -140,6 +140,16 @@
goto out;
}
@ -18,7 +18,7 @@ diff -u -r ../dropbear-2017.75/gensignkey.c ./gensignkey.c
if (link(fn_temp, filename) < 0) {
/* If generating keys on connection (skipexist) it's OK to get EEXIST
- we probably just lost a race with another connection to generate the key */
@@ -148,6 +158,7 @@
@@ -151,6 +161,7 @@
goto out;
}
}

28
packages/dropbear/sshpty.c.patch Normal file
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@ -0,0 +1,28 @@
diff -uNr dropbear-2018.76/sshpty.c dropbear-2018.76.mod/sshpty.c
--- dropbear-2018.76/sshpty.c 2018-02-27 16:25:12.000000000 +0200
+++ dropbear-2018.76.mod/sshpty.c 2018-04-21 13:45:06.703730641 +0300
@@ -22,6 +22,10 @@
#include "errno.h"
#include "sshpty.h"
+#ifdef __ANDROID__
+# define USE_DEV_PTMX 1
+#endif
+
/* Pty allocated with _getpty gets broken if we do I_PUSH:es to it. */
#if defined(HAVE__GETPTY) || defined(HAVE_OPENPTY)
#undef HAVE_DEV_PTMX
@@ -380,6 +384,7 @@
tty_name, strerror(errno));
}
+ /*
if (st.st_uid != pw->pw_uid || st.st_gid != gid) {
if (chown(tty_name, pw->pw_uid, gid) < 0) {
if (errno == EROFS &&
@@ -409,4 +414,5 @@
}
}
}
+ */
}

25
packages/dropbear/svr-agentfwd.c.patch Normal file
View File

@ -0,0 +1,25 @@
diff -uNr dropbear-2018.76/svr-agentfwd.c dropbear-2018.76.mod/svr-agentfwd.c
--- dropbear-2018.76/svr-agentfwd.c 2018-02-27 16:25:12.000000000 +0200
+++ dropbear-2018.76.mod/svr-agentfwd.c 2018-04-21 13:46:57.660403020 +0300
@@ -41,7 +41,7 @@
#include "listener.h"
#include "auth.h"
-#define AGENTDIRPREFIX "/tmp/dropbear-"
+#define AGENTDIRPREFIX "@TERMUX_PREFIX@/tmp/dropbear-"
static int send_msg_channel_open_agent(int fd);
static int bindagent(int fd, struct ChanSess * chansess);
@@ -218,10 +218,12 @@
/* drop to user privs to make the dir/file */
uid = getuid();
gid = getgid();
+ /*
if ((setegid(ses.authstate.pw_gid)) < 0 ||
(seteuid(ses.authstate.pw_uid)) < 0) {
dropbear_exit("Failed to set euid");
}
+ */
memset((void*)&addr, 0x0, sizeof(addr));
addr.sun_family = AF_UNIX;

22
packages/dropbear/svr-auth-c.patch → packages/dropbear/svr-auth.c.patch
View File

@ -1,7 +1,7 @@
diff -u -r ../dropbear-2014.63/svr-auth.c ./svr-auth.c
--- ../dropbear-2014.63/svr-auth.c 2014-02-19 15:05:24.000000000 +0100
+++ ./svr-auth.c 2014-03-22 17:52:07.000000000 +0100
@@ -120,6 +120,9 @@
diff -uNr dropbear-2018.76/svr-auth.c dropbear-2018.76.mod/svr-auth.c
--- dropbear-2018.76/svr-auth.c 2018-02-27 16:25:12.000000000 +0200
+++ dropbear-2018.76.mod/svr-auth.c 2018-04-21 13:48:35.083741369 +0300
@@ -93,6 +93,9 @@
}
username = buf_getstring(ses.payload, &userlen);
@ -11,7 +11,7 @@ diff -u -r ../dropbear-2014.63/svr-auth.c ./svr-auth.c
servicename = buf_getstring(ses.payload, &servicelen);
methodname = buf_getstring(ses.payload, &methodlen);
@@ -129,7 +132,6 @@
@@ -102,7 +105,6 @@
SSH_SERVICE_CONNECTION_LEN) != 0)) {
/* TODO - disconnect here */
@ -19,7 +19,7 @@ diff -u -r ../dropbear-2014.63/svr-auth.c ./svr-auth.c
m_free(servicename);
m_free(methodname);
dropbear_exit("unknown service in auth");
@@ -219,7 +221,6 @@
@@ -192,7 +194,6 @@
out:
@ -27,15 +27,19 @@ diff -u -r ../dropbear-2014.63/svr-auth.c ./svr-auth.c
m_free(servicename);
m_free(methodname);
}
@@ -287,6 +288,7 @@
usershell = "/bin/sh";
@@ -320,9 +321,10 @@
usershell = ses.authstate.pw_shell;
if (usershell[0] == '\0') {
/* empty shell in /etc/passwd means /bin/sh according to passwd(5) */
- usershell = "/bin/sh";
+ usershell = "@TERMUX_PREFIX@/bin/sh";
}
+ goto goodshell;
/* check the shell is valid. If /etc/shells doesn't exist, getusershell()
* should return some standard shells like "/bin/sh" and "/bin/csh" (this
* is platform-specific) */
@@ -306,7 +308,7 @@
@@ -343,7 +345,7 @@
return DROPBEAR_FAILURE;
goodshell:

36
packages/dropbear/svr-chansession.c.patch Normal file
View File

@ -0,0 +1,36 @@
diff -uNr dropbear-2018.76/svr-chansession.c dropbear-2018.76.mod/svr-chansession.c
--- dropbear-2018.76/svr-chansession.c 2018-02-27 16:25:12.000000000 +0200
+++ dropbear-2018.76.mod/svr-chansession.c 2018-04-21 13:45:06.707063974 +0300
@@ -919,6 +919,8 @@
#endif
/* clear environment */
+ /* termux: do not clear environment on android */
+#ifndef __ANDROID__
/* if we're debugging using valgrind etc, we need to keep the LD_PRELOAD
* etc. This is hazardous, so should only be used for debugging. */
#ifndef DEBUG_VALGRIND
@@ -931,6 +933,7 @@
}
#endif /* HAVE_CLEARENV */
#endif /* DEBUG_VALGRIND */
+#endif /* __ANDROID__ */
/* We can only change uid/gid as root ... */
if (getuid() == 0) {
@@ -956,12 +959,14 @@
}
}
+ /* termux: do not modify environment since we did not clean it */
+#ifndef __ANDROID__
/* set env vars */
addnewvar("USER", ses.authstate.pw_name);
addnewvar("LOGNAME", ses.authstate.pw_name);
addnewvar("HOME", ses.authstate.pw_dir);
addnewvar("SHELL", get_user_shell());
- addnewvar("PATH", DEFAULT_PATH);
+#endif /* __ANDROID__ */
if (chansess->term != NULL) {
addnewvar("TERM", chansess->term);
}

12
packages/dropbear/sysoptions.h.patch Normal file
View File

@ -0,0 +1,12 @@
diff -uNr dropbear-2018.76/sysoptions.h dropbear-2018.76.mod/sysoptions.h
--- dropbear-2018.76/sysoptions.h 2018-02-27 16:25:12.000000000 +0200
+++ dropbear-2018.76.mod/sysoptions.h 2018-04-21 13:48:41.227075019 +0300
@@ -71,7 +71,7 @@
#define _PATH_TTY "/dev/tty"
-#define _PATH_CP "/bin/cp"
+#define _PATH_CP "@TERMUX_PREFIX@/bin/cp"
#define DROPBEAR_ESCAPE_CHAR '~'