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#!/bin/sh
##########################################################
# Copyright (C) 2006-2021 VMware, Inc. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation version 2.1 and no later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the Lesser GNU General Public
# License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA.
#
##########################################################

# usage(): prints how to use this script
usage()
{
        echo ""
        echo "Usage: $0 [-hux]"
        echo "  -h prints this usage statement"
        echo "  -u updates the host with the state of support data" \
             "collection process"
        echo "  -x transfers support data to the host"
        exit 1
}


# banner(): prints any number of strings padded with
# newlines before and after.
banner()
{
	echo
	for option in "$@"
	do
		echo $option
	done
	echo
}


# The status constants are important and have to be kept
# in sync with VMware Workstation implementation

#	vm-support script is not running
VMSUPPORT_NOT_RUNNING=0
#	vm-support script is beginning
VMSUPPORT_BEGINNING=1
#	vm-support script running in progress
VMSUPPORT_RUNNING=2
#	vm-support script is ending
VMSUPPORT_ENDING=3
#	vm-support script failed
VMSUPPORT_ERROR=10
#	vm-support collection not supported
VMSUPPORT_UNKNOWN=100

#internal state machine state for update
update=0

#internal state machine state for transfering logs to host
transfer=0

# UpdateState($state): Updates the VM with the given state.
UpdateState()
{
   if [ $update -eq 1 ]; then
     vmware-xferlogs upd $1
   fi
}


# checkOutputDir(): checks for a self contained output
# directory for later tar'ing and creates it if needed

checkOutputDir()
{
   dir="$1"

   if [ ! -d "${OUTPUT_DIR}$dir" ]; then
      mkdir -p "${OUTPUT_DIR}$dir"

      if [ $? != 0 ]; then
         banner "Could not create ${OUTPUT_DIR}$dir... " \
                "Have you run out of disk space?" "Continuing"
         return -1
      fi
   fi
   return 0
}


# addfile(): copies whatever files and directories you give it to
# a self contained output directory for later tar'ing
# Working on copies could slow this down with VERY large files but:
# 1) We don't expect VERY large files
# 2) Since /proc files can be copied this preserves the tree without
#    having to cat them all into a file.
# 3) tar barfs on open files like logs if it changes while it's tar'ing.
#    Copying file first makes sure tar doesn't complain
addfile()
{
   file="$1"

   if [ ! -e "$file" ]; then
      return 2
   fi

   dir=`dirname "$file"`
   checkOutputDir "$dir"
   if [ $? != 0 ]; then
      return $?
   fi

   # Ignore stdout and handle errors.
   cp -pRP "$file" "${OUTPUT_DIR}$dir" 2>/dev/null
   if [ $? != 0 ]; then
      banner "Could not copy '$file' to the tar area."
   fi
}


# addfiles(): adds a list of files to the archive.
addfiles()
{
   for i in "$@"; do
      addfile $i
   done
}


# addGrubFile(): adds a grub file to the archive after
# replacing password hash with 'xxxxxx'
addGrubFile()
{
   file="$1"

   addfile "$file"
   if [ $? != 0 ]; then
      return
   fi

   # Avoid tempering with links
   if [ ! -L "${OUTPUT_DIR}$file" ]; then
      cat "${OUTPUT_DIR}$file" | \
         sed 's/password[[:space:]]\+\(.*\)[[:space:]]\+\(.*\)$/password \1 xxxxxx/g' > \
         "${OUTPUT_DIR}$file.modified"
      mv "${OUTPUT_DIR}$file.modified" "${OUTPUT_DIR}$file"
   fi
}

# runcmd($out, $cmd): executes the command redirected to a file
runcmd()
{
   outFileRelPath="$1"
   shift # The command arguments are in "$@".

   dir=`dirname "$outFileRelPath"`
   checkOutputDir "$dir"
   if [ $? != 0 ]; then
      return
   fi

   "$@" > "$OUTPUT_DIR$outFileRelPath" 2>/dev/null
   if [ $? != 0 ]; then
      echo 3
         banner "Either could not run $@ or could not write to" \
                "${OUTPUT_DIR}$outFileRelPath" \
                "Do you have a full disk? Continuing..."
   fi
}


# stageLinux(): gather information for troubleshooting Linux guests.
stageLinux()
{
   # Try to collect bootloader config.
   addfile /etc/lilo.conf

   # And for grub we are not sure about the exact default location so collect them
   # all.
   addGrubFile /boot/grub/grub.conf
   addGrubFile /boot/grub/menu.lst
   addGrubFile /etc/grub.conf

   # Old linux kernel use modules.conf while new kernel use modprobe.conf and modprobe.d
   addfile /etc/modules.conf
   addfile /etc/modprobe.conf
   addfile /etc/modprobe.d

   addfile /etc/cron.daily
   addfile /etc/cron.hourly
   addfile /etc/cron.monthly
   addfile /etc/cron.weekly
   addfile /etc/crontab
   addfile /etc/ntp.conf
   addfile /etc/services
   addfile /proc/interrupts
   addfile /proc/irq

   # Commands to run ($2) and redirect to logs ($1) for inclusion.
   runcmd "/tmp/ps-auwwx.txt" ps auwwx
   runcmd "/tmp/lspci1.txt" lspci -M -vvv -nn -xxxx
   runcmd "/tmp/lspci2.txt" lspci -t -v -nn -F "${OUTPUT_DIR}/tmp/lspci1.txt"
   runcmd "/tmp/lspci3.txt" lspci -vvv -nn
   runcmd "/tmp/modules.txt" /sbin/lsmod
   runcmd "/tmp/uname.txt" uname -a
   runcmd "/tmp/issue.txt" cat /etc/issue
   if which rpm > /dev/null; then
      runcmd "/tmp/rpm-qa.txt" rpm -qa
   fi
   if which apt > /dev/null; then
      runcmd "/tmp/apt-list.txt" apt list
   fi
   runcmd "/tmp/free.txt" free
}


# stageFreeBSD(): gather information for troubleshooting FreeBSD guests.
stageFreeBSD()
{
   runcmd "/tmp/ps-auwwx.txt" ps auwwx
}

# stageSolaris(): gather information for troubleshooting Solaris guests.
stageSolaris()
{
   runcmd "/tmp/ps-eaf.txt" ps -eaf
}


# error(): prints an error message using the "banner" funtion and quits.
error()
{
   banner "$@"
   UpdateState $VMSUPPORT_ERROR
   exit 1
}


# Cleanup our temp folder and optionally exit.
cleanup()
{
   exitCode="$1"

   rm -rf "$OUTPUT_DIR"
   if [ $? != 0 ]; then
      banner "$OUTPUT_DIR was not successfully removed." \
             "Please remove manually."
   fi

   if [ "$exitCode" ]; then
      exit "$exitCode"
   fi
}

collectNetworkDetails()
{
    if which ip >/dev/null; then
        runcmd "/tmp/ip-addr.txt" ip addr
        runcmd "/tmp/ip-route.txt" ip route
    else
        runcmd "/tmp/ifconfig.txt" ifconfig -a
        runcmd "/tmp/route.txt" route
    fi

    if which ss >/dev/null; then
        runcmd "/tmp/ss-lan.txt" ss -lan
    else
        runcmd "/tmp/netstat-lan.txt" netstat -lan
    fi
}

# This executable may run with root privileges, so hardcode a PATH where
# unprivileged users cannot write.
export PATH=/bin:/sbin:/usr/bin:/usr/sbin

TARFILE=vm-`date +%Y-%m-%d`.$$.tar.gz
VER=0.93

# Parse args
for option in $@
do
   case $option in
   "-h")
      usage
      ;;
   "-u")
      update=1
      ;;
   "-x")
      transfer=1
      ;;
   *)
      usage
      ;;
   esac
done

#	Start message

UpdateState $VMSUPPORT_BEGINNING

banner "VMware UNIX Support Script $VER"

#	Check for root privledge

if [ `whoami` != 'root' ]; then
   error "Please re-run this program as root. "
fi

# Source /etc/profile.  If we can't find it, it's the users problem to get
# their paths straight.
if [ -f /etc/profile ]; then
	. /etc/profile
fi

# Protect against non-default values of $IFS (Not all scripts in /etc/profile.d/
# are good citizens).
if [ `uname` != 'SunOS' ]; then
   unset IFS 2>/dev/null
fi

# Create a temporary directory to place the files to archive.
#
# o mktemp creates a new directory, with a random name, and gives it
#   permissions 700 so only the current user (and root) can access the
#   contents of the directory. This prevents a rogue user from:
#   1) Guessing the name of the directory.
#   2) Performing a symlink attack inside the directory.
#   3) Reading data inside the directory, that only the current user (and root)
#      are supposed to access.
# o The directory is created inside /tmp, so only the current user (and root)
#   can delete the directory. This prevents a rogue user from wholesale
#   replacing the directory after we have created it, with a directory that has
#   more lenient permissions.
OUTPUT_DIR="`mktemp -d /tmp/vm-support.XXXXXX`"
if [ $? != 0 ]; then
   banner "Could not create a secure temporary directory. Exiting..."
   exit 1
fi

# Cleanup our temp folder if the process is signalled midway.
trap "cleanup 1" HUP INT QUIT TERM ABRT

banner "Collecting support information..."

# Common stuff that we gather for all OSes.
runcmd "/tmp/vm-support-version.txt" echo vm-support version: $VER

addfiles /etc/vmware-tools
addfiles /var/log/boot*
addfiles /var/log/secure*
addfiles /var/log/messages*
addfiles /var/log/syslog*
addfiles /var/log/vmware-*
addfiles /var/run/vmware-*
addfile /var/log/cloud-init.log
addfile /var/log/cloud-init-output.log
addfile /etc/cloud/cloud.cfg

runcmd "/tmp/df.txt" df
collectNetworkDetails
runcmd "/tmp/mount.txt" mount
runcmd "/tmp/dmesg.txt" dmesg
runcmd "/tmp/ulimit-a.txt" ulimit -a
runcmd "/tmp/uptime.txt" uptime
runcmd "/tmp/date.txt" date
runcmd "/tmp/umask.txt" umask

case `uname` in
Linux)
   stageLinux
   #	tar options: 'S' for sparse core files.
   TAR_OPTS=-czSf
   ;;
FreeBSD)
   stageFreeBSD
   TAR_OPTS=-czf
   ;;
SunOS)
   stageSolaris
   TAR_OPTS=-czf
   ;;
esac

UpdateState $VMSUPPORT_RUNNING

banner "Creating tar archive..."
# Set umask to make diagnostic information unreadable to other users to avoid
# possible information leakage.
(umask 0077 && tar $TAR_OPTS $TARFILE $OUTPUT_DIR)
if [ $? != 0 ]; then
	banner "The tar process did not successfully complete!" \
	       "If tar reports that a file changed while reading, please attempt " \
	       "to rerun this script."
fi

# Clean up temporary files
trap - HUP INT QUIT TERM ABRT; cleanup

if [ $transfer -eq 1 ]; then
   banner "Transferring support data to the host..."
   vmware-xferlogs enc $TARFILE 2>/dev/null

   if [ $? != 0 ]; then
      banner "Could not transfer the support data  successfully: either " \
             "vmware-xferlogs binary is not in the path, or you are not " \
             "in a virtual machine."
   fi
else
   banner "Skipping support data transfer to the host."
fi

UpdateState $VMSUPPORT_ENDING
banner "Done, support data available in '$TARFILE'."