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executable file
·128 lines (111 loc) · 2.89 KB
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#! /bin/bash
#
# Flash an esp8266 over wifi. This communicates with the esphttpd's /flash handlers
# and POSTS the correct binary depending on the partition that needs to be flashed
# next.
#
show_help() {
cat <<EOT
Usage: ${0##*/} [-options...] hostname user1.bin user2.bin
Flash the esp8266 running esphttpd at <hostname> with either <user1.bin> or <user2.bin>
depending on its current state. Reboot the esp8266 after flashing and wait for it to come
up again.
-v Be verbose
-h show this help
Example: ${0##*/} -v esp8266 firmware/user1.bin firmware/user2.bin
${0##*/} 192.168.4.1 firmware/user1.bin firmware/user2.bin
EOT
}
if ! which curl >/dev/null; then
echo "ERROR: Cannot find curl: it is required for this script." >&2
exit 1
fi
start=`date +%s`
# ===== Parse arguments
verbose=
while getopts "hvx:" opt; do
case "$opt" in
h) show_help; exit 0 ;;
v) verbose=1 ;;
x) foo="$OPTARG" ;;
'?') show_help >&2; exit 1 ;;
esac
done
# Shift off the options and optional --.
shift "$((OPTIND-1))"
# Get the fixed arguments
if [[ $# != 3 ]]; then
show_help >&2
exit 1
fi
hostname=$1
user1=$2
user2=$3
re='[-A-Za-z0-9.]+'
if [[ ! "$hostname" =~ $re ]]; then
echo "ERROR: hostname ${hostname} is not a valid hostname or ip address" >&2
exit 1
fi
if [[ ! -r "$user1" ]]; then
echo "ERROR: cannot read user1 firmware file ($user1)" >&2
exit 1
fi
if [[ ! -r "$user2" ]]; then
echo "ERROR: cannot read user2 firmware file ($user2)" >&2
exit 1
fi
# ===== Retrieve the 'next' firmware required
fw=
while true; do
[[ -n "$verbose" ]] && echo "Fetching http://$hostname/flash/next" >&2
v=; [[ -n "$verbose" ]] && v=-v
next=`curl -m 10 $v -s "http://$hostname/flash/next"`
if [[ $? != 0 ]]; then
echo "Error retrieving http://$hostname/flash/next" >&2
exit 1
fi
case "$next" in
user1.bin)
echo "Flashing user1.bin" >&2
fw="$user1"
break;;
user2.bin)
echo "Flashing user2.bin" >&2
fw="$user2"
break;;
*)
echo "Error retrieving or parsing http://$hostname/flash/next" >&2
exit 1
;;
esac
done
#silent=-s
[[ -n "$verbose" ]] && silent=
res=`curl $silent -XPOST --data-binary "@$fw" "http://$hostname/flash/upload"`
if [[ $? != 0 || "$res" != "" ]]; then
echo "Error flashing $fw" >&2
echo $res >&2
exit 1
fi
sleep 2
echo "Rebooting into new firmware" >&2
curl -m 10 -s -XPOST "http://$hostname/flash/reboot"
sleep 2
echo "Waiting for ESP8266 to come back"
while true; do
[[ -n "$verbose" ]] && echo "Fetching http://$hostname/flash/next" >&2
next2=`curl -m 10 $v -s "http://$hostname/flash/next"`
[[ -n "$verbose" ]] && echo "got: $next2"
re='user[12]\.bin'
if [[ "$next2" =~ $re ]]; then
if [[ "$next2" != "$next" ]]; then
sec=$(( `date +%s` - $start ))
echo "Success, took $sec seconds" >&2
exit 0
else
echo "Flashing seems to have failed and it reverted to the old firmware?" >&2
exit 1
fi
fi
sleep 1
done