diff options
| -rw-r--r-- | INSTALL | 74 | ||||
| -rw-r--r-- | MULTI | 19 | ||||
| -rw-r--r-- | README | 40 |
3 files changed, 64 insertions, 69 deletions
@@ -1,45 +1,30 @@ Basic Dropbear build instructions: -- First, edit options.h to choose user-defined features to choose, such as - which ciphers/hashes you want, which forwarding you want, etc. +- Edit options.h to set which features you want. +- Edit debug.h if you want any debug options (not usually required). -- Edit debug.h if you want any debug options - -- Now configure Dropbear's host-specific options - (if you are using a cvs copy, "autoconf; autoheader" first) +(If using a non-tarball copy, "autoconf; autoheader") ./configure (optionally with --disable-zlib or --disable-syslog, or --help for other options) -- Then compile and optionally install Dropbear: - -(the Makefile requires GNU make, if you want to make it portable, send me - some patches) +Now compile: -make -make install (installs to /usr/local/sbin, /usr/local/bin by default) +make PROGRAMS="dropbear dbclient dropbearkey dropbearconvert scp" -You need to generate server keys, this is one-off: -./dropbearkey -t rsa -f dropbear_rsa_host_key -./dropbearkey -t dss -f dropbear_dss_host_key +And install (/usr/local/bin is usual default): -or alternatively convert OpenSSH keys to Dropbear: -./dropbearconvert openssh dropbear /etc/ssh/ssh_host_dsa_key dropbear_dss_host_key +make PROGRAMS="dropbear dbclient dropbearkey dropbearconvert scp" install -And you can now run the server. -./dropbear +(you can leave items out of the PROGRAMS list to avoid compiling them. If you +recompile after changing the PROGRAMS list, you *MUST* "make clean" before +recompiling - bad things will happen otherwise) -or './dropbear -h' to get options. +See MULTI for instructions on making all-in-one binaries. -If the server is run as non-root, you most likely won't be able to allocate a -pty, and you cannot login as any user other than that running the daemon -(obviously). Shadow passwords will also be unusable as non-root. +If you want to compile statically, add "STATIC=1" to the make command-line. -The Dropbear distribution includes a standalone version of OpenSSH's scp -program. You can compile it with "make scp", you may want to change the path -of the ssh binary, specified near the top of the scp.c file. By default -the progress meter isn't compiled in to save space, you can enable it with -"make scp-progress". +Binaries can be strippd with "make strip" ============================================================================ @@ -50,18 +35,11 @@ versions is broken. Also note that you may get strange issues if your uClibc headers don't match the library you are running with, ie the headers might say that shadow password support exists, but the libraries don't have it. -To compile for uClibc the following should work: - -rm config.cache -CC=i386-uclib-gcc ./configure --disable-zlib -make clean -make -make strip - -... and that should be it. You can use "make static" to make statically linked -binaries, and it is advisable to strip the binaries too. If you're looking -to make a small binary, you should remove unneeded ciphers and MD5, by -editing options.h +Compiling for uClibc should be the same as normal, just set CC to the magic +uClibc toolchain compiler (ie export CC=i386-uclibc-gcc or whatever). +You can use "make STATIC=1" to make statically linked binaries, and it is +advisable to strip the binaries too. If you're looking to make a small binary, +you should remove unneeded ciphers and MD5, by editing options.h It is possible to compile zlib in, by copying zlib.h and zconf.h into a subdirectory (ie zlibincludes), and @@ -94,19 +72,3 @@ things to note: to create all the /dev/pty?? and /dev/tty?? devices, which can be problematic for devfs. In general, openpty() is the best way to allocate PTYs, so it's best to try and get it working. - - -============================================================================ - -Public key auth: - -You can use ~/.ssh/authorized_keys in the same way as with OpenSSH, just put -the key entries in that file. They should be of the form: - -ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAIEAwVa6M6cGVmUcLl2cFzkxEoJd06Ub4bVDsYrWvXhvUV+ZAM9uGuewZBDoAqNKJxoIn0Hyd0Nk/yU99UVv6NWV/5YSHtnf35LKds56j7cuzoQpFIdjNwdxAN0PCET/MG8qyskG/2IE2DPNIaJ3Wy+Ws4IZEgdJgPlTYUBWWtCWOGc= someone@hostname - -You must make sure that ~/.ssh, and the key file, are only writable by the -user. - -NOTE: Dropbear ignores authorized_keys options such as those described in the -OpenSSH sshd manpage, and will not allow a login for these keys. @@ -3,29 +3,24 @@ Multi-binary compilation To compile for systems without much space (floppy distributions etc), you can create a single binary. This will save disk space by avoiding repeated -code between the three components (dropbear, dropbearkey, dropbearconvert). +code between the various parts. If you are familiar with "busybox", it's the same principle. -To use the multi-purpose binary, firstly enable the "#define DROPBEAR_MULTI" -line in options.h +To compile the multi-binary, first "make clean" (if you've compiled +previously), then -Then enable which of the binaries you want to compile, also in options.h -(by default these are all enabled). - -You should then "make clean" (if you compiled previously), then - -"make dropbearmulti" - -("make dropbearmultistatic" will make a static binary). +make PROGRAMS="programs you want here" MULTI=1 To use the binary, symlink it from the desired executable: ln -s dropbearmulti dropbear +ln -s dropbearmulti dbclient +etc then execute as normal: ./dropbear <options here> -"make install" doesn't currently work for multi-binary configuration, however +"make install" doesn't currently work for multi-binary configuration, though in most situations where it is being used, the target and build systems will differ. @@ -1,4 +1,4 @@ -This is Dropbear, a smallish SSH 2 server. +This is Dropbear, a smallish SSH 2 server and client. INSTALL has compilation instructions. @@ -12,3 +12,41 @@ me if you have any questions/bugs found/features/ideas/comments etc :) Matt Johnston matt@ucc.asn.au + +============================================================================ + +Public key auth: + +You can use ~/.ssh/authorized_keys in the same way as with OpenSSH, just put +the key entries in that file. They should be of the form: + +ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAIEAwVa6M6cGVmUcLl2cFzkxEoJd06Ub4bVDsYrWvXhvUV+ZAM9uGuewZBDoAqNKJxoIn0Hyd0Nk/yU99UVv6NWV/5YSHtnf35LKds56j7cuzoQpFIdjNwdxAN0PCET/MG8qyskG/2IE2DPNIaJ3Wy+Ws4IZEgdJgPlTYUBWWtCWOGc= someone@hostname + +You must make sure that ~/.ssh, and the key file, are only writable by the +user. + +NOTE: Dropbear ignores authorized_keys options such as those described in the +OpenSSH sshd manpage, and will not allow a login for these keys. + +To run the server, you need to generate server keys, this is one-off: +./dropbearkey -t rsa -f dropbear_rsa_host_key +./dropbearkey -t dss -f dropbear_dss_host_key + +or alternatively convert OpenSSH keys to Dropbear: +./dropbearconvert openssh dropbear /etc/ssh/ssh_host_dsa_key dropbear_dss_host_key + +And you can now run the server. +./dropbear + +or './dropbear -h' to get options. + +If the server is run as non-root, you most likely won't be able to allocate a +pty, and you cannot login as any user other than that running the daemon +(obviously). Shadow passwords will also be unusable as non-root. + +The Dropbear distribution includes a standalone version of OpenSSH's scp +program. You can compile it with "make scp", you may want to change the path +of the ssh binary, specified near the top of the scp.c file. By default +the progress meter isn't compiled in to save space, you can enable it with +"make scp-progress". + |