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- #!/bin/echo Try "scripts/mkroot.sh dropbear"
- # Example overlay file, adding dropbear (which requires zlib)
- echo === download source
- download e6d119755acdf9104d7ba236b1242696940ed6dd \
- http://downloads.sf.net/libpng/zlib-1.2.11.tar.gz
- download c3d4fe27fa17ec8217dbedbd33dd73a1ca6cda2c \
- https://matt.ucc.asn.au/dropbear/releases/dropbear-2020.81.tar.bz2
- echo === Native build static zlib
- setupfor zlib
- # They keep checking in broken generated files.
- rm -f Makefile zconf.h &&
- CC=${CROSS_COMPILE}cc LD=${CROSS_COMPILE}ld AS=${CROSS_COMPILE}as ./configure &&
- make -j $(nproc) || exit 1
- # do _not_ cleanup zlib, we need the files we just built for dropbear
- cd ..
- echo === $HOST Native build static dropbear
- setupfor dropbear
- # Repeat after me: "autoconf is useless"
- echo 'echo "$@"' > config.sub &&
- ZLIB="$(echo ../zlib*)" &&
- CFLAGS="-I $ZLIB -O2" LDFLAGS="-L $ZLIB" ./configure --enable-static \
- --disable-wtmp --host="$(basename "$CROSS_COMPILE" | sed 's/-$//')" &&
- sed -i 's@/usr/bin/dbclient@ssh@' options.h &&
- sed -i 's@\(#define NON_INETD_MODE\) 1@\1 0@' default_options.h &&
- make -j $(nproc) PROGRAMS="dropbear dbclient dropbearkey dropbearconvert scp" MULTI=1 SCPPROGRESS=1 &&
- ${CROSS_COMPILE}strip dropbearmulti &&
- mkdir -p "$ROOT"/{bin,etc/{rc,dropbear},var/log} &&
- touch "$ROOT"/var/log/lastlog &&
- cp dropbearmulti "$ROOT"/bin || exit 1
- for i in "$ROOT"/bin/{ssh,dropbear,scp,dropbearkey}
- do
- ln -s dropbearmulti $i || exit 1
- done
- cleanup
- rm -rf zlib-*
- # user root password root, user guest no password
- echo -e 'root:$1$939UTPzb$/PfVYAsF2Hqi/AQ3UBjbK/:::::::\nguest::::::::' > "$ROOT"/etc/shadow &&
- chmod 600 "$ROOT"/etc/shadow &&
- echo 'netcat -p 22 -L dropbear -iRB &' > "$ROOT"/etc/rc/dropbear &&
- # file to run on host to ssh into guest
- echo 'ssh -o "UserKnownHostsFile=/dev/null" -o "StrictHostKeyChecking=no" ${1:+$1@}127.0.0.1 -p 2222' > "$OUTPUT"/ssh2dropbear.sh &&
- chmod +x "$OUTPUT"/ssh2dropbear.sh
- # Forward 127.0.0.1:2222 into qemu instance
- QEMU_MORE="-nic user,hostfwd=tcp:127.0.0.1:2222-:22"
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