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  1. #!/usr/bin/env bash
  2. # monkeysphere-authentication: Monkeysphere authentication admin tool
  3. #
  4. # The monkeysphere scripts are written by:
  5. # Jameson Rollins <jrollins@finestructure.net>
  6. # Jamie McClelland <jm@mayfirst.org>
  7. # Daniel Kahn Gillmor <dkg@fifthhorseman.net>
  8. # Micah Anderson <micah@riseup.net>
  9. #
  10. # They are Copyright 2008-2009, and are all released under the GPL,
  11. # version 3 or later.
  12. ########################################################################
  13. set -e
  14. # set the pipefail option so pipelines fail on first command failure
  15. set -o pipefail
  16. PGRM=$(basename $0)
  17. SYSSHAREDIR=${MONKEYSPHERE_SYSSHAREDIR:-"/usr/share/monkeysphere"}
  18. export SYSSHAREDIR
  19. . "${SYSSHAREDIR}/common" || exit 1
  20. SYSDATADIR=${MONKEYSPHERE_SYSDATADIR:-"/var/lib/monkeysphere"}
  21. export SYSDATADIR
  22. # sharedir for authentication functions
  23. MASHAREDIR="${SYSSHAREDIR}/ma"
  24. # datadir for authentication functions
  25. MADATADIR="${SYSDATADIR}/authentication"
  26. # temp directory to enable atomic moves of authorized_keys files
  27. MATMPDIR="${MADATADIR}/tmp"
  28. export MATMPDIR
  29. # UTC date in ISO 8601 format if needed
  30. DATE=$(date -u '+%FT%T')
  31. # unset some environment variables that could screw things up
  32. unset GREP_OPTIONS
  33. # default return code
  34. RETURN=0
  35. ########################################################################
  36. # FUNCTIONS
  37. ########################################################################
  38. usage() {
  39. cat <<EOF >&2
  40. usage: $PGRM <subcommand> [options] [args]
  41. Monkeysphere authentication admin tool.
  42. subcommands:
  43. update-users (u) [USER]... update user authorized_keys files
  44. add-id-certifier (c+) [KEYID|FILE] import and tsign a certification key
  45. --domain (-n) DOMAIN limit ID certifications to DOMAIN
  46. --trust (-t) TRUST trust level of certifier (full)
  47. --depth (-d) DEPTH trust depth for certifier (1)
  48. remove-id-certifier (c-) KEYID remove a certification key
  49. list-id-certifiers (c) list certification keys
  50. version (v) show version number
  51. help (h,?) this help
  52. See ${PGRM}(8) for more info.
  53. EOF
  54. }
  55. # function to interact with the gpg core keyring
  56. gpg_core() {
  57. GNUPGHOME="$GNUPGHOME_CORE"
  58. export GNUPGHOME
  59. gpg --no-greeting --quiet --no-tty "$@"
  60. }
  61. # function to interact with the gpg sphere keyring
  62. # FIXME: this function requires only a single argument because of
  63. # problems with quote expansion. this needs to be fixed/improved.
  64. gpg_sphere() {
  65. GNUPGHOME="$GNUPGHOME_SPHERE"
  66. export GNUPGHOME
  67. su_monkeysphere_user "gpg --no-greeting --quiet --no-tty $@"
  68. }
  69. # output to stdout the core fingerprint from the gpg core secret
  70. # keyring
  71. core_fingerprint() {
  72. log debug "determining core key fingerprint..."
  73. gpg_core --list-secret-key --with-colons \
  74. --fixed-list-mode --with-fingerprint \
  75. | grep ^fpr: | cut -d: -f10
  76. }
  77. # export signatures from core to sphere
  78. gpg_core_sphere_sig_transfer() {
  79. log debug "exporting core local sigs to sphere..."
  80. gpg_core --export-options export-local-sigs --export | \
  81. gpg_sphere "--import-options import-local-sigs --import"
  82. }
  83. ########################################################################
  84. # MAIN
  85. ########################################################################
  86. # set unset default variables
  87. AUTHORIZED_USER_IDS="%h/.monkeysphere/authorized_user_ids"
  88. RAW_AUTHORIZED_KEYS="%h/.ssh/authorized_keys"
  89. # load configuration file
  90. [ -e ${MONKEYSPHERE_AUTHENTICATION_CONFIG:="${SYSCONFIGDIR}/monkeysphere-authentication.conf"} ] \
  91. && . "$MONKEYSPHERE_AUTHENTICATION_CONFIG"
  92. # set empty config variable with ones from the environment
  93. LOG_LEVEL=${MONKEYSPHERE_LOG_LEVEL:=$LOG_LEVEL}
  94. KEYSERVER=${MONKEYSPHERE_KEYSERVER:=$KEYSERVER}
  95. CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:=$CHECK_KEYSERVER}
  96. MONKEYSPHERE_USER=${MONKEYSPHERE_MONKEYSPHERE_USER:=$MONKEYSPHERE_USER}
  97. PROMPT=${MONKEYSPHERE_PROMPT:=$PROMPT}
  98. AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:=$AUTHORIZED_USER_IDS}
  99. RAW_AUTHORIZED_KEYS=${MONKEYSPHERE_RAW_AUTHORIZED_KEYS:=$RAW_AUTHORIZED_KEYS}
  100. # other variables
  101. REQUIRED_USER_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_USER_KEY_CAPABILITY:="a"}
  102. GNUPGHOME_CORE=${MONKEYSPHERE_GNUPGHOME_CORE:="${MADATADIR}/core"}
  103. GNUPGHOME_SPHERE=${MONKEYSPHERE_GNUPGHOME_SPHERE:="${MADATADIR}/sphere"}
  104. CORE_KEYLENGTH=${MONKEYSPHERE_CORE_KEYLENGTH:="2048"}
  105. # export variables needed in su invocation
  106. export DATE
  107. export MODE
  108. export LOG_LEVEL
  109. export KEYSERVER
  110. export MONKEYSPHERE_USER
  111. export PROMPT
  112. export CHECK_KEYSERVER
  113. export REQUIRED_USER_KEY_CAPABILITY
  114. export GNUPGHOME_CORE
  115. export GNUPGHOME_SPHERE
  116. export GNUPGHOME
  117. export CORE_KEYLENGTH
  118. # get subcommand
  119. COMMAND="$1"
  120. [ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
  121. shift
  122. case $COMMAND in
  123. 'setup'|'setup'|'s')
  124. source "${MASHAREDIR}/setup"
  125. setup
  126. ;;
  127. 'update-users'|'update-user'|'u')
  128. source "${MASHAREDIR}/setup"
  129. setup
  130. source "${MASHAREDIR}/update_users"
  131. update_users "$@"
  132. ;;
  133. 'add-identity-certifier'|'add-id-certifier'|'add-certifier'|'c+')
  134. source "${MASHAREDIR}/setup"
  135. setup
  136. source "${MASHAREDIR}/add_certifier"
  137. add_certifier "$@"
  138. ;;
  139. 'remove-identity-certifier'|'remove-id-certifier'|'remove-certifier'|'c-')
  140. source "${MASHAREDIR}/setup"
  141. setup
  142. source "${MASHAREDIR}/remove_certifier"
  143. remove_certifier "$@"
  144. ;;
  145. 'list-identity-certifiers'|'list-id-certifiers'|'list-certifiers'|'list-certifier'|'c')
  146. source "${MASHAREDIR}/setup"
  147. setup
  148. source "${MASHAREDIR}/list_certifiers"
  149. list_certifiers
  150. ;;
  151. 'diagnostics'|'d')
  152. source "${MASHAREDIR}/setup"
  153. setup
  154. source "${MASHAREDIR}/diagnostics"
  155. diagnostics
  156. ;;
  157. 'gpg-cmd')
  158. source "${MASHAREDIR}/setup"
  159. setup
  160. gpg_sphere "$@"
  161. ;;
  162. 'version'|'v')
  163. echo "$VERSION"
  164. ;;
  165. '--help'|'help'|'-h'|'h'|'?')
  166. usage
  167. ;;
  168. *)
  169. failure "Unknown command: '$COMMAND'
  170. Type '$PGRM help' for usage."
  171. ;;
  172. esac
  173. exit "$RETURN"