freedombone-update-date 3.8KB

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  1. #!/bin/bash
  2. #
  3. # .---. . .
  4. # | | |
  5. # |--- .--. .-. .-. .-.| .-. .--.--. |.-. .-. .--. .-.
  6. # | | (.-' (.-' ( | ( )| | | | )( )| | (.-'
  7. # ' ' --' --' -' - -' ' ' -' -' -' ' - --'
  8. #
  9. # Freedom in the Cloud
  10. #
  11. # Updates the date
  12. # License
  13. # =======
  14. #
  15. # Copyright (C) 2015-2016 Bob Mottram <bob@robotics.uk.to>
  16. #
  17. # This program is free software: you can redistribute it and/or modify
  18. # it under the terms of the GNU Affero General Public License as published by
  19. # the Free Software Foundation, either version 3 of the License, or
  20. # (at your option) any later version.
  21. #
  22. # This program is distributed in the hope that it will be useful,
  23. # but WITHOUT ANY WARRANTY; without even the implied warranty of
  24. # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  25. # GNU Affero General Public License for more details.
  26. #
  27. # You should have received a copy of the GNU Affero General Public License
  28. # along with this program. If not, see <http://www.gnu.org/licenses/>.
  29. PROJECT_NAME='freedombone'
  30. export TEXTDOMAIN=${PROJECT_NAME}-update-date
  31. export TEXTDOMAINDIR="/usr/share/locale"
  32. COMPLETION_FILE=/root/${PROJECT_NAME}-completed.txt
  33. TIMESOURCE='google.com'
  34. TIMESOURCE2='www.ptb.de'
  35. LOGFILE=/var/log/tlsdate.log
  36. TIMEOUT=5
  37. EMAIL=
  38. if grep -q "Admin user" $COMPLETION_FILE; then
  39. ADMIN_USER=$(cat $COMPLETION_FILE | grep "Admin user" | awk -F ':' '{print $2}')
  40. EMAIL=$ADMIN_USER@$HOSTNAME
  41. fi
  42. # File which contains the previous date as a number
  43. BEFORE_DATE_FILE=/var/log/tlsdateprevious.txt
  44. # File which contains the previous date as a string
  45. BEFORE_FULLDATE_FILE=/var/log/tlsdate.txt
  46. DATE_BEFORE=$(date)
  47. BEFORE=$(date "+%s")
  48. BACKWARDS_BETWEEN=0
  49. re="^[0-9]+$"
  50. # If the date was previously set
  51. if [ -s "$BEFORE_DATE_FILE" ]; then
  52. filesize=$(wc -c "$BEFORE_DATE_FILE" | cut -f 1 -d " ")
  53. if [ $filesize -ge 5 ]; then
  54. BEFORE_FILE=$(cat $BEFORE_DATE_FILE)
  55. if [[ $BEFORE_FILE =~ $re ]]; then
  56. BEFORE_FULLDATE=$(cat $BEFORE_FULLDATE_FILE)
  57. # is the date going backwards?
  58. if (( $BEFORE_FILE > $BEFORE )); then
  59. echo -n $"Date went backwards between tlsdate updates. " >> $LOGFILE
  60. echo -n "$BEFORE_FILE > $BEFORE, " >> $LOGFILE
  61. echo "$BEFORE_FULLDATE > $DATE_BEFORE" >> $LOGFILE
  62. # Send a warning email
  63. if [ $EMAIL ]; then
  64. echo $(tail $LOGFILE -n 2) | mail -s $"tlsdate anomaly" $EMAIL
  65. fi
  66. # Try another time source
  67. TIMESOURCE=$TIMESOURCE2
  68. # try running without any parameters
  69. tlsdate >> $LOGFILE
  70. BACKWARDS_BETWEEN=1
  71. fi
  72. fi
  73. fi
  74. fi
  75. # Set the date
  76. /usr/bin/timeout $TIMEOUT tlsdate -l -t -H $TIMESOURCE -p 443 >> $LOGFILE
  77. DATE_AFTER=$(date)
  78. AFTER=$(date "+%s")
  79. # After setting the date did it go backwards?
  80. if (( $AFTER < $BEFORE )); then
  81. echo $"Incorrect date: $DATE_BEFORE -> $DATE_AFTER" >> $LOGFILE
  82. # Send a warning email
  83. if [ $EMAIL ]; then
  84. echo $(tail $LOGFILE -n 2) | mail -s $"tlsdate anomaly" $EMAIL
  85. fi
  86. # Try resetting the date from another time source
  87. /usr/bin/timeout $TIMEOUT tlsdate -l -t -H $TIMESOURCE2 -p 443 >> $LOGFILE
  88. DATE_AFTER=$(date)
  89. AFTER=$(date "+%s")
  90. else
  91. echo -n $TIMESOURCE >> $LOGFILE
  92. if [ -s "$BEFORE_DATE_FILE" ]; then
  93. echo -n " " >> $LOGFILE
  94. echo -n $BEFORE_FILE >> $LOGFILE
  95. fi
  96. echo -n " " >> $LOGFILE
  97. echo -n $BEFORE >> $LOGFILE
  98. echo -n " " >> $LOGFILE
  99. echo -n $AFTER >> $LOGFILE
  100. echo -n " " >> $LOGFILE
  101. echo $DATE_AFTER >> $LOGFILE
  102. fi
  103. # Log the last date
  104. if [[ $BACKWARDS_BETWEEN == 0 ]]; then
  105. echo "$AFTER" > $BEFORE_DATE_FILE
  106. echo "$DATE_AFTER" > $BEFORE_FULLDATE_FILE
  107. exit 0
  108. fi
  109. exit 1