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Overview
Comment:Add preliminary support for package scripts that are signed using OpenPGP.
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SHA1: d81d61b27034830fa23c55691a38ca45ac92b9f0
User & Date: mistachkin on 2016-08-16 23:16:55
Other Links: manifest | tags
Context
2016-08-16
23:42
Make the temporary file cleanup code shared by all the appropriate code paths. Coding style cleanup. check-in: 3b8436d84c user: mistachkin tags: trunk
23:16
Add preliminary support for package scripts that are signed using OpenPGP. check-in: d81d61b270 user: mistachkin tags: trunk
21:35
Add preliminary support for package scripts that have a PGP signature instead of a Harpy certificate. check-in: 4335ea0899 user: mistachkin tags: trunk
Changes
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Modified client/pkgd.eagle from [1ba0f38394] to [3c6abfbda1].

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    variable baseUri
    variable downloadUri
    variable persistentDirectory
    variable quiet

    if {$persistent} then {
      set downloadRootDirectory [file join $persistentDirectory]
    } else {
      global env

    } elseif {[info exists ::env(PKGD_TEMP)]} then {
      set downloadRootDirectory [file join $::env(PKGD_TEMP) pkgr]
    } elseif {[info exists ::env(TEMP)]} then {
      set downloadRootDirectory [file join $::env(TEMP) pkgr]
    } elseif {[info exists ::env(TMP)]} then {
      set downloadRootDirectory [file join $::env(TMP) pkgr]
    } else {
      error "please set PKGD_TEMP (via environment) to temporary directory"
      if {[info exists env(PKGD_TEMP)]} then {
        set downloadRootDirectory [file join $env(PKGD_TEMP) pkgr]
      } elseif {[info exists env(TEMP)]} then {
        set downloadRootDirectory [file join $env(TEMP) pkgr]
      } elseif {[info exists env(TMP)]} then {
        set downloadRootDirectory [file join $env(TMP) pkgr]
      } else {
        error "please set PKGD_TEMP (via environment) to temporary directory"
      }
    }

    set downloadDirectories [list]

    foreach fileName $fileNames {
      if {[string length $fileName] == 0 || \
          [file pathtype $fileName] ne "relative"} then {
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Modified client/pkgd.eagle.harpy from [f0343c3c56] to [cabf8e37c6].

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    THE ASSOCIATED SOFTWARE MAY NOT WORK PROPERLY IF THIS FILE IS ALTERED.
-->
<Certificate xmlns="https://eagle.to/2011/harpy"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Protocol>None</Protocol>
  <Vendor>Mistachkin Systems</Vendor>
  <Id>06b76c33-0e3b-4120-8142-0053f4d17521</Id>
  <Id>36e6e8e4-39ac-4f29-928e-5c10e32cb1eb</Id>
  <HashAlgorithm>SHA512</HashAlgorithm>
  <EntityType>Script</EntityType>
  <TimeStamp>2016-08-16T02:50:58.2761250Z</TimeStamp>
  <TimeStamp>2016-08-16T23:11:46.2517109Z</TimeStamp>
  <Duration>-1.00:00:00</Duration>
  <Key>0x2c322765603b5278</Key>
  <Signature>
    VsQxIv0pQbKwapByuSpDz4HcbTBrr+UtPdW8V2nlF/7x5yjzxXGcBqH/Ub+zYYLGUvDgPLKW2nST
    UlGW+GRnKOJ4rvVytLL4IY415E4p86qUL5l3mgeY++OyYHSDgbBEEW1SlbU+l+0NaZvH2zFWBkMe
    mDbEsuGRJpGvXm1sJfZP15UTnoNNJ/446isFNRvPCV9gTp7/1GFs+w9943iXRYAQi9hN2fSSgotc
    FapDXfkspC0arL4jFCpo0WrY2Pdtc//avflPm8OR0dZeZFNG1fLQHMEvWpq+CwY/KHZ3xMEUDIb5
    +i+ziLYO+3nNtXuaxzEnTgajelG0qPMZceOEF0Esz3ePOMKNhl7N503y4rm8U/IRGVTkPeCDwjHW
    mmX5ORiHt/QM8asUVfl+Mh1bmy6ty6Lk3xX8hqV3ZsE85bVSihrFirXXEcHMW6CZY3sC0I5Mpn0D
    V5u9MzrI6iE6oBsme86/WMsBq93wHweIqV5RNxiYG+Cdyb3E4yCMh2Kx5cHegiFA0oTbUy+IGp5Q
    3n5pA0lGwhuWUrME9cVj6b/+ZMMdlwhMWQSpZE6GdDf5wJeUY4iK9IIqUADHnrqOs3chgUJgYrjo
    b88nXT/2AFVZqWe9R+ecln6e3FjFCNfyLqNpfo0miOXYxj52m2dWNOlOYVZsjyfxFm2DjYTwf0Zr
    VJJWF1ojfah1D9Ys1HxpuvbQkKAZD03lJfp5rLStD2vo3o8dyujZtoQ09nRzStSOuflBFd+hEmzh
    4/nrkRs8+szY0MMSrwZSTlOn9WwvEvtDEzHs+9sLftfjg3FO/QLTV/ZTiROKZn1kTeLhczNRTpDy
    6HXUR4rxqrvQ9hT8fgRe9O3uEvazjktkoPkpNcTSsC0Hdwf+thuaGZiqx9dHebIzrLsBFz9gQdJC
    LCMwDeNyOykj10vV6GIfUjLCysJqdBPfdyBDvRbd6gXhkKnzTn5M1xiCAdnRNnXKNbXIzNIz8P+w
    z3Ygzy0JBaZ5bM8lADfY4A9kPSAqab07w/Rln/qOcfxteap/qwLnXmjJ1fyBorozisJ82Ldi+4un
    jFbddGkFyOamC/gLVI2JyyiBdb8HOUkmSQOu7/2BpdnOPtLA8udhyDVI8g83EUeDwGcRXJCzWH8B
    1fhfdycdMGrFkg5OHQHGo0ESod1lMwrr95LzEMB1StUx/HBVBZuBS0eJc3FzAVcDClgwCvLY6Ahw
    0sp5yaO+zd0Rcuq3DQ+RLwiQmHBO+jFjCScOw9RAEU+MTL5hbEv6IloIOLpsVcI6fmBncfRBp1Nw
    7NpQxGD2cQYVUHHbMO1opK69LFlyfCzaleKSHRo2uugSCaJI883TE0T5ErCBwYtnqYVPuOL2Wg==
    av/1fHoVZ0XejRwe+bdJJYFVWD8w3CDhQQG3Jvl/e05XiPQmGugz7+zNfPo6vvDze6zjsbSHMc8k
    06+r1uDhC6LuWqUe7LrnZXmvqFAnIAbw7r9eKyqNOyxkbpVqAj+xFqDAnkRWm8rrZrq0jM5kjhmn
    wqZ1frK/LA5KHTAer1dwgQ3S3WWkt0uWxCo93pZlTDZ8nhz7c1TTR03cUvNkQ+Kce+7BExuG3RB7
    hNmGeGtldBNTKrwSeHU9Es0gR5+RRZub2sAZpanND66uNyWQZLa7++qLNrbAwhOeRTxgmqliGjhN
    kHVKFKgMsbYmuR4YEWFaJeU/V/zKfiY1v+CbP3y0ftKeS6mO3eoAeELzJSTGQ8YD1BvdOyF3jL97
    pibYHVzW5rCxpc+b65axhqimwC+rNBFwSy0LSgbaLowd0k4K5HtPOqctYNT/ffyqKgLH1+Ef0urx
    CJOkXIssB5B7e1SzKCDobD+cnF3s8CyNGQ2+XPL1n0X5IWv3J8XGaVrKs6f/RljP20rjS2WtX8Nr
    GPauVB4rVwoeVckSirlRe6BAqmzu0YS/fjlk5wErpsSJJmtGB2E6SvctryrKk34KICO6gdPHsff7
    mSaRmSAOz9Fr2aMM5le7W1YlZW4tWfumS5LHZc2OlV7f++7oV6ca38J9fX211QwrU254Xg5WgKqg
    7T3wLaPl/zC5DwNjYYl8aVfHKUgeDo+89fC8SZGchDk167UKfaQ/h9qe+0xIplV2bpYBhuxW4stz
    ZYu/Byq+NFIvwACnVzbvXhlcJ639p11CfYyB4ewnDfGky0k1Xg/kSEM+MipTqJ92jQwIskKRP19k
    gC1Y9XTOMp75zAdzW9ObXZWJdU+sLcRHUOq1rCEtHXtKTxmVF/2qNRTLFeOk44Ar+pAbcmUYPo4j
    BOAA76tMi8P4cgBsOrRanoFK4BgaCwA3b9hxGjiN2so3o1+y9tg6eHOYkp7iRrxtDHSkL1yaAkp4
    6IH71p8ohr9nKxN2RhvWSE5pekYr0XlFJvJ7F2sGBt2DYMfhnRA3bXVv0fQ1NvJuKUsZrWm+ByMm
    3kZddXr/7Y3QscrRUp0nu3lmI3hN8ZWI5yfyBNScJNP2Cm86M2jotfybKLiJ6gbmEjrLsIHmGj4X
    BPVhTK78J6jcH9Q0uDEprRaNf6BUYI8AYOMhZ2qsQST0oObb5kNJC9IRA9Pn1oRC7GWxh+XYMJRi
    PDVTUkJykp7TSu0RA7ZgCX5cbvUPSy9Yyf6CMtCmqBem6hioB8ONTToIErAtR4r00krSX9YOQBmv
    Tam5TBg1vU/f4tepyyhLkMJKCQzpA3VMaz6jVIVbFq3OGf5oCidvknebKT2aks1nTp+w93leVA==
  </Signature>
</Certificate>

Modified client/pkgr.eagle from [ebedd45873] to [9791c3779a].

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  #       containing the Eagle core script library file "init.eagle").
  #
  package require Eagle.Library

  proc stringIsList { value } {
    if {[isEagle]} then {
      return [string is list $value]
    } else {
      global tcl_version
    } elseif {[info exists ::tcl_version] && $::tcl_version >= 8.5} then {
      return [string is list $value]
    } elseif {[catch {llength $value}] == 0} then {
      return true
    } else {
      return false

      if {[info exists tcl_version] && $tcl_version >= 8.5} then {
        return [string is list $value]
      } elseif {[catch {llength $value}] == 0} then {
        return true
      } else {
        return false
      }
    }
  }

  proc isHarpyCertificate { value } {
    if {[string length $value] == 0 || [string first [string trim {
      <Certificate xmlns="https://eagle.to/2011/harpy"
    }] $value] != -1} then {
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      -----BEGIN PGP SIGNATURE-----
    }] $value] != -1} then {
      return true
    } else {
      return false
    }
  }

  proc getFileTempName {} {
    if {[isEagle]} then {
      return [file tempname]
    } else {
      global env

      if {[info exists env(PKGR_TEMP)]} then {
        set directory $env(PKGD_TEMP)
      } elseif {[info exists env(TEMP)]} then {
        set directory $env(TEMP)
      } elseif {[info exists env(TMP)]} then {
        set directory $env(TMP)
      } else {
        error "please set PKGR_TEMP (via environment) to temporary directory"
      }

      set counter [expr {[pid] ^ int(rand() * 0xFFFF)}]

      while {1} {
        set fileNameOnly [format tcl%04X.tmp $counter]
        set fileName [file join $directory $fileNameOnly]

        if {![file exists $fileName]} then {
          return $fileName
        }

        incr counter
      }
    }
  }

  proc verifyPgpSignature { fileName } {
    variable pgpCommand

    if {[isEagle]} then {
      set fileName [appendArgs \" $fileName \"]
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      set newProcName(1) [appendArgs \
          [getLookupVarNamePrefix] eagleHasSecurity_ [getLookupVarNameSuffix]]

      set newProcName(2) [appendArgs \
          [getLookupVarNamePrefix] tclMustBeReady_ [getLookupVarNameSuffix]]

      set newProcName(3) [appendArgs \
          [getLookupVarNamePrefix] getFileTempName_ [getLookupVarNameSuffix]]

      #
      # NOTE: Create the Eagle script block that will be used to securely
      #       evaluate a signed package script.  This must be evaluated in
      #       Eagle because it uses several plugins only available there.
      #
      set script(outer) [string map [list \
          %metadata% $newVarName %eagleHasSecurity% $newProcName(1) \
          %tclMustBeReady% $newProcName(2)] {
          %tclMustBeReady% $newProcName(2) %getFileTempName% $newProcName(3)] {
        try {
          #
          # NOTE: If there is no package ifneeded script, there is nothing we
          #       can do here.
          #
          if {[string length ${%metadata%(ifNeeded)}] > 0} then {
            #
            # NOTE: Save the security state for the interpreter.  Then, attempt
            #       to enable it.  This will fail if one of the needed plugins
            #       cannot be loaded.
            #
            set savedSecurity [{%eagleHasSecurity%}]
            if {!$savedSecurity} then {source enableSecurity}

            try {
              #
              # NOTE: Figure out temporary file name for the downloaded script
              #       and its associated script certificate.
              #
              set fileName(1) [file tempname]
              set fileName(1) [{%getFileTempName%}]
              set fileName(2) [appendArgs $fileName(1) .harpy]

              try {
                #
                # NOTE: Write the downloaded script to a temporary file.
                # NOTE: Write downloaded script to a temporary file.
                #
                writeFile $fileName(1) ${%metadata%(ifNeeded)}

                #
                # NOTE: Write the downloaded script certificateto a temporary
                # NOTE: Write downloaded script certificate to a temporary
                #       file.
                #
                if {[string length ${%metadata%(certificate)}] > 0} then {
                  writeFile $fileName(2) ${%metadata%(certificate)}
                }

                #
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                  }
                  default {
                    error "unsupported language"
                  }
                }
              } finally {
                #
                # NOTE: Delete any temporary files that we created during the
                #       signed script evaluation.
                # NOTE: Delete the temporary files that we created for the
                #       signed script verification.
                #
                if {[string length $fileName(2)] > 0 && \
                    [file exists $fileName(2)]} then {
                  catch {file delete $fileName(2)}
                  unset -nocomplain fileName(2)
                }
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              # NOTE: Restore the saved security state for the interpreter.
              #
              if {!$savedSecurity} then {source disableSecurity}
              unset -nocomplain savedSecurity
            }
          }
        } finally {
          rename {%getFileTempName%} ""
          rename {%tclMustBeReady%} ""
          rename {%eagleHasSecurity%} ""

          unset -nocomplain {%metadata%}
        }
      }]

      #
      # NOTE: Copy the package metadata into the fresh array variable,
      #       if necessary, marshalling it from native Tcl to Eagle.
      #
      if {[isEagle]} then {
        array set $newVarName [array get metadata]

        proc $newProcName(1) {} [info body [appendArgs \
            [namespace current] ::eagleHasSecurity]]

        proc $newProcName(2) {} [info body [appendArgs \
            [namespace current] ::tclMustBeReady]]

        proc $newProcName(3) {} [info body [appendArgs \
            [namespace current] ::getFileTempName]]

        return [eval $script(outer)]
      } else {
        eagleMustBeReady

        eagle [list array set $newVarName [array get metadata]]

        eagle [list proc $newProcName(1) {} [info body [appendArgs \
            [namespace current] ::eagleHasSecurity]]]

        eagle [list proc $newProcName(2) {} [info body [appendArgs \
            [namespace current] ::tclMustBeReady]]]

        eagle [list proc $newProcName(3) {} [info body [appendArgs \
            [namespace current] ::getFileTempName]]]

        return [eagle $script(outer)]
      }
    } elseif {[isPgpSignature $metadata(certificate)]} then {
      #
      # NOTE: If there is no package ifneeded script, there is nothing we
      #       can do here.
      #
      if {[string length $metadata(ifNeeded)] > 0} then {
        #
        # NOTE: Figure out temporary file name for the downloaded script
        #       and its associated PGP signature.
        #
        set fileName(1) [getFileTempName]
        set fileName(2) [appendArgs $fileName(1) .asc]
      error "not yet implemented"

        #
        # NOTE: Write downloaded script to a temporary file.
        #
        writeFile $fileName(1) $metadata(ifNeeded)

        #
        # NOTE: Write downloaded script PGP signature a temporary file.
        #
        if {[string length $metadata(certificate)] > 0} then {
          writeFile $fileName(2) $metadata(certificate)
        }

        #
        # NOTE: Attempt to verify the PGP signature for the package script.
        #       If this fails, raise an error.
        #
        if {![verifyPgpSignature $fileName(2)]} then {
          error [appendArgs \
              "couldn't read file \"" $fileName(1) "\": bad PGP signature"]
        }

        #
        # NOTE: Delete the temporary files that we created for the PGP
        #       signature verification.
        #
        if {[string length $fileName(2)] > 0 && \
            [file exists $fileName(2)]} then {
          catch {file delete $fileName(2)}
          unset -nocomplain fileName(2)
        }

        if {[string length $fileName(1)] > 0 && \
            [file exists $fileName(1)]} then {
          catch {file delete $fileName(1)}
          unset -nocomplain fileName(1)
        }

        #
        # NOTE: The PGP signature was verified; use the downloaded package
        #       script verbatim.
        #
        set script(inner) $metadata(ifNeeded)

        #
        # NOTE: Determine the target language for the package script, which
        #       may or may not be the language that is currently evaluating
        #       this script (Eagle).  The default language, when one was not
        #       explicitly specified, is Eagle.  In the future, this may be
        #       changed, e.g. to use the file extension of the client script.
        #
        switch -exact -- $metadata(language) {
          "" -
          Eagle {
            if {[isEagle]} then {
              return [uplevel #0 $script(inner)]
            } else {
              eagleMustBeReady

              return [eagle [list uplevel #0 $script(inner)]]
            }
          }
          Tcl {
            if {[isEagle]} then {
              tclMustBeReady; return [tcl eval [tcl master] [list \
                  uplevel #0 $script(inner)]]
            } else {
              return [uplevel #0 $script(inner)]
            }
          }
          default {
            error "unsupported language"
          }
        }
      }
    } else {
      error "unsupported script certificate"
    }
  }

  proc setupPackageUnknownHandler {} {
    variable autoHook
︙

Modified client/pkgr.eagle.harpy from [391949f600] to [7739519f37].

︙
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    THE ASSOCIATED SOFTWARE MAY NOT WORK PROPERLY IF THIS FILE IS ALTERED.
-->
<Certificate xmlns="https://eagle.to/2011/harpy"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Protocol>None</Protocol>
  <Vendor>Mistachkin Systems</Vendor>
  <Id>ed124b1a-4d17-4891-8565-cca6d319e05d</Id>
  <Id>24efe138-647e-406e-a4ff-1d8728db1a30</Id>
  <HashAlgorithm>SHA512</HashAlgorithm>
  <EntityType>Script</EntityType>
  <TimeStamp>2016-08-16T21:34:49.8991719Z</TimeStamp>
  <TimeStamp>2016-08-16T23:06:52.1540547Z</TimeStamp>
  <Duration>-1.00:00:00</Duration>
  <Key>0x2c322765603b5278</Key>
  <Signature>
    HfIXyk05Fdr92bC3TsiyVrc9wkALImMYIkeLLlxqdwqq/E+MFw86KoxVioFP/RQXiaaHoThtK9YO
    CWy96n9d3fZXDBvq7o1eneSYH+QECU0CGB8ffzQs4fHoDECjrTg85crQeyzfQUYG/OkI5N9OipBf
    +i6QyTnomS1NSNogtS5uhcxeg3hGk8MClsxsgRVrPDNkQdM9jIqI0TklIy4bE1Z9OmG8kfjpewXP
    S/3FZqQugahida3tfCmWICQez1sSvSSx04k+s7Duf3lHCUvCBy7DbNwow2hlWhAIwdmx6eZtK/h9
    lQgbAGIJERDengtiA2wVXxAvZ4RpdRfnMt5HfLlZKOaWxTDdPQq5J8eDI2iHZYogXZfKewFTMnl6
    r+4tyDCt1t5DLUS+leBltmKH7VMQKWcncVSc0D/PFT9DsKtOndvwntpIWbx4aLPk//zLS4kqu7oX
    ajUeTSms2KK5cAy4JQl27i85XakzmWz65772rcxmEjdujVGG33GYxJ+DsSYmEUgV77qOocz/ASe4
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    lQ4RMjCuqJkAFaszObTQ6cyn9KX71vWLzjDYKPNQXyWUhavqRH7FZw/HvyRs2c++KuKqNhv0ABlp
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    ga0Y/ctcaAsUU4iuAr7DL4X9cLjRY7ghcZMlHjFziPZ4FJUJXwSAkSzbDKG3Tyzpwhfl75ZvCuwe
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    qTMZ/M8YBbExCx5npgCpo3fFkPqoX/tYqDc5jmLz8xJUXuFij3tDXQ2X95KyHcIuKzVVtWzHvXs4
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  </Signature>
</Certificate>

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