From 7f4ebd424a4298ca3a708f253e3b2648db0f2c47 Mon Sep 17 00:00:00 2001
From: Kenneth Johansson <kenneth@southpole.se>
Date: Mon, 14 Sep 2015 16:44:25 +0200
Subject: [PATCH] Add crashlog package.

read package/inteno/crashlog/readme for how to setup server for storing
logs.
---
 crashlog/Makefile                  |  31 ++++++++++++++++++
 crashlog/files/etc/dropbear/logid  | Bin 0 -> 805 bytes
 crashlog/files/etc/init.d/crashlog |  34 +++++++++++++++++++
 crashlog/files/usr/sbin/logssh     |   6 ++++
 crashlog/readme                    |  42 ++++++++++++++++++++++++
 crashlog/scp_upload                |  51 +++++++++++++++++++++++++++++
 6 files changed, 164 insertions(+)
 create mode 100644 crashlog/Makefile
 create mode 100644 crashlog/files/etc/dropbear/logid
 create mode 100755 crashlog/files/etc/init.d/crashlog
 create mode 100755 crashlog/files/usr/sbin/logssh
 create mode 100644 crashlog/readme
 create mode 100644 crashlog/scp_upload

diff --git a/crashlog/Makefile b/crashlog/Makefile
new file mode 100644
index 000000000..4db86e1b3
--- /dev/null
+++ b/crashlog/Makefile
@@ -0,0 +1,31 @@
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=crashlog
+PKG_VERSION:=1.0.0
+PKG_RELEASE:=1
+PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/crashlog
+  CATEGORY:=Utilities
+  TITLE:=Handling kernel crash logs
+endef
+
+define Package/crashlog/description
+	Handling kernel crash logs.
+endef
+
+define Build/Prepare
+	mkdir -p $(PKG_BUILD_DIR)
+	$(CP) ./files/* $(PKG_BUILD_DIR)/
+endef
+
+define Build/Compile
+endef
+
+define Package/crashlog/install
+	$(CP) ./files/* $(1)/
+endef
+
+$(eval $(call BuildPackage,crashlog))
diff --git a/crashlog/files/etc/dropbear/logid b/crashlog/files/etc/dropbear/logid
new file mode 100644
index 0000000000000000000000000000000000000000..eff823161d740852d2cd93073364b4bb8cf1d068
GIT binary patch
literal 805
zcmV+=1KRum000Mbb7(Dcb724g00RL40RR920RXU{)LIM-@mp6@n21+^P-mtsWrja7
zg^EH|2#?1XWb}b1AI#&UjJ=P050avel^Nv1I$0u;#3&i*K|B>8z?A#}yPPst+~NI2
z^u3s}P%ZIG@O*{~Dua75R+ZNBqWDQ>_f&YUEdg>?zh$>MQR2^H{32Q01_S>S(8&^8
zGKLffu+Mr>POSz-?7ev?4YLwqaa=99B2xfLeq%NSU)nq}_~tC<8tVK1X#Kz5Pr#iZ
zw9CDYGf}JRR|$Aihj#3p%;wO_SqoO8MbBp>2ZkWYp{@OS6Nteo1m~{Hb0-m%0oJ1_
z<bCIYoHoR_-Nd$9YoghR<~^`ij;Hm0yvYCn0RRT4wRxxQVudPQWdbHBOU1Hp-F9;2
z9{$m)IxO{se!n1*4ld-(A<?PkDkwmIV?+*4Upx<9)>*Yh2!}cdlT1m`%H>b}=OiaA
zSURO|t;!?D)QY)mtVq!^9EN|SPTGUMRC+w|4qxA4Kr%0oHH@pSnY>RouJa_!!M-&E
zb$kfkjvv29I*(roW9QVRV&~`-W?HJCL~{+h>j&?0z`@o>*svIy-Q!Sw`?xt~5wD@S
z$q2VJFv&ngdMvc2^~vgn9Io9QmQTJ^25$_9Ih#>-&XPKJc|Y+X<}yYavjBOA?<L%Y
z?nzJ<(IBw4Bgj!miE)%o(!crJKv-b`D}4X}0D%DX8;4A1VB{!E-jFZx#71F?YY>vs
znHEA@%VyOq0Dz-YDsm}f4B#Y;<&m8zM%kr<r~<1W)XcaDg+E|})HNVAj=rlLT6I}#
zawgehv-IA2-2e1pg2E3s{(o;$hI$C>bWvmNoM#d>dFyz(A&ZOj1~H#(g9(}caC38o
z7BBMv004mixjLycWa~*-E9}|=!#@?Y3GQ@CN7#VFPN`YoZA{P<a$?Q#cA<k<X5m*Y
z_x^f~oM%nx8=KYN!2+5o0S+Ox$=rt0%H5%b8{fzd+dqI8`S(+!Q3VV`hO*1Tt~;D|
j5HE(t4L3(3mo_s6w#PG~DXwS85(@P2f={JXg!@ZVSFC!h

literal 0
HcmV?d00001

diff --git a/crashlog/files/etc/init.d/crashlog b/crashlog/files/etc/init.d/crashlog
new file mode 100755
index 000000000..0422e1c32
--- /dev/null
+++ b/crashlog/files/etc/init.d/crashlog
@@ -0,0 +1,34 @@
+#!/bin/sh /etc/rc.common
+
+START=99
+
+send_log()
+{
+	nr=$(db get hw.board.serialNumber)
+	hw=$(db get hw.board.hardware)
+	hwv=$(db get hw.board.hardwareVersion)
+	bid=$(db get hw.board.boardId)
+
+	server=$(/sbin/uci get system.cashlog.server)
+    
+	scp  -S /usr/sbin/logssh /proc/last_kmsg log@${server}:log/${bid}_${hwv}_${hw}_${nr}
+}
+
+boot()
+{
+    # is crashlog enabled ?
+    enable=$(/sbin/uci get system.cashlog.enable)
+    case $enable in
+	0|no|NO|false|FALSE)
+	    exit 0
+	    ;;
+    esac
+
+    # is this boot a result from a crash ?
+    reason=$(cat /etc/boot_reason)
+    case $reason in
+	HW|WD)
+	    send_log
+	    ;;
+    esac
+}
diff --git a/crashlog/files/usr/sbin/logssh b/crashlog/files/usr/sbin/logssh
new file mode 100755
index 000000000..c3bb394a7
--- /dev/null
+++ b/crashlog/files/usr/sbin/logssh
@@ -0,0 +1,6 @@
+#!/bin/sh
+# we need to have the -y option to dropbear to not halt the scp when
+# transfering the log file to a new server for the first time.
+# since we already need this also put in the keyfile
+
+ssh -y -i /etc/dropbear/logid $@
diff --git a/crashlog/readme b/crashlog/readme
new file mode 100644
index 000000000..b0b322483
--- /dev/null
+++ b/crashlog/readme
@@ -0,0 +1,42 @@
+Install scp server.
+
+Create a user account on a server and make sure it's possible to login to it
+using ssh.
+
+For now the user has to be called "log"
+
+USER is the user name of the account
+HOME is the user home directory.
+Both should be changed to the correct value in all following example commands.
+
+create HOME/bin
+Put scp_upload in HOME/bin
+make it executable "chmod a+x HOME/bin/scp_upload" 
+
+create home/.ssh   (observer the dot .shh)
+
+create an empty file HOME/.ssh/authorized_keys
+
+-------------------------------
+Now everyhting is setup for use but we have not added any clients.
+What we need is the public key for the clients.
+
+For dropbear "dropbearkey -y -f files/etc/dropbear/logid" will generate the public key.
+
+----------
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCwn9RaDAzxW1dTmIhXgFBnpi1lhj8xhYpCVQiPxxdk9IEmH8zjo4y9j3sPkqKOlRnkwjpZIpLEKBnpQTwVIMCU/AG7nDJX3OH9RfS9mLJQLfFL8HyGCyqDezFWldbyovhJZvdUeK4tAXJWv2W3OVHiz2L8IlncBgP/E9DJElsyhhQHsM96UE6tBkXsvXkoDbMSYXFcLbgiUwBKfmM2BF/aPDL45iznGur7/2j9v95PwJ0gtMu9jjNRq+pXCXhTh3bsnczm0MpZC1aiRc9nJAeGIMmhrf15E4jBKgTnrstzJxGVAdajKeR954KcNsS33cS2Wmui2YjmPbBXjqf1frzJ log@inteno
+----------
+
+The public key should be just one line. Add that line to the 
+HOME/.ssh/authorized_keys file on the scp server. Then add the follwoing as
+the first text on the same line. that is insert before the key data.
+
+command="HOME/bin/scp_upload",no-port-forwarding,no-agent-forwarding,no-X11-forwarding 
+
+Do not forget to change HOME to the correct value for the server and there 
+should be one space separating the key data and the above text.
+---------------------------------
+Now test to make sure that you can upload new files, not download files
+and not overwrite files from the client.
+
+
diff --git a/crashlog/scp_upload b/crashlog/scp_upload
new file mode 100644
index 000000000..860f226a1
--- /dev/null
+++ b/crashlog/scp_upload
@@ -0,0 +1,51 @@
+#! /bin/bash
+# authorized_keys command="/home/boxi/my_scp",no-port-forwarding,no-agent-forwarding,no-X11-forwarding
+
+val=`expr match "$SSH_ORIGINAL_COMMAND" "scp"`
+if [ $val != 3 ]
+then
+    echo "only scp is allowed for this rsa key"
+    exit 1
+fi
+
+#strip out "scp" as getopts barf on anything not an option
+
+args=${SSH_ORIGINAL_COMMAND:3}
+
+# we must set args to positional paramters otherwise it's next to impossible
+# to get to the rest of the line that is not arguments.
+
+set -- $args
+while getopts "rftdvpq" Option
+do
+  case $Option in
+    r ) echo "recursive not allowed";exit 1;;
+    f ) echo "reading files not allowed";exit 1;;
+    t ) ;;
+    d ) ;;
+    v ) ;;
+    p ) ;;
+    q ) ;;
+    * ) ;;   # Default.
+  esac
+done
+
+shift $(($OPTIND - 1))
+
+file="$*"
+
+if [ "$file" == "." ]
+then
+    echo "Implicit filename \".\" not allowed."
+    echo "You must specify the exact target filename"
+    exit 1
+fi
+
+# try to create uniq files
+EXTRA=$((0))
+while [ -e "${file}_${EXTRA}" ]
+do
+    EXTRA=$((EXTRA +1))
+done
+
+exec ${SSH_ORIGINAL_COMMAND}_${EXTRA}