922 lines
21 KiB
Plaintext
922 lines
21 KiB
Plaintext
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#!/bin/sh
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# git-remote-gcrypt
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#
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# Copyright (c) 2013 engla
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# Copyright (c) 2013, 2014 Joey Hess <id@joeyh.name>
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# Copyright (c) 2016 Sean Whitton <spwhitton@spwhitton.name> and contributors
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) version 2 or any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# See README.rst for usage instructions
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set -e # errexit
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set -f # noglob
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set -C # noclobber
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export GITCEPTION="${GITCEPTION:-}+" # Reuse $Gref except when stacked
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Gref="refs/gcrypt/gitception$GITCEPTION"
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Gref_rbranch="refs/heads/master"
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Packkey_bytes=63 # nbr random bytes for packfile keys, any >= 256 bit is ok
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Hashtype=SHA256 # SHA512 SHA384 SHA256 SHA224 supported.
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Manifestfile=91bd0c092128cf2e60e1a608c31e92caf1f9c1595f83f2890ef17c0e4881aa0a
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Hex40="[a-f0-9]"
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Hex40=$Hex40$Hex40$Hex40$Hex40$Hex40$Hex40$Hex40$Hex40
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Hex40=$Hex40$Hex40$Hex40$Hex40$Hex40 # Match SHA-1 hexdigest
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GPG="$(git config --get "gpg.program" '.+' || echo gpg)"
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Did_find_repo= # yes for connected, no for no repo
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Localdir="${GIT_DIR:=.git}/remote-gcrypt"
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Tempdir=
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Repoid=
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Refslist=
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Packlist=
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Keeplist=
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Extnlist=
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Repack_limit=25
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Recipients=
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# compat/utility functions
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# xfeed: The most basic output function puts $1 into the stdin of $2..$#
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xfeed()
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{
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local input_=
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input_=$1; shift
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"$@" <<EOF
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$input_
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EOF
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}
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xecho() { xfeed "$*" cat; }
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xecho_n() { xecho "$@" | tr -d \\n ; } # kill newlines
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echo_git() { xecho "$@" ; } # Code clarity
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echo_info() { xecho "gcrypt:" "$@" >&2; }
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echo_die() { echo_info "$@" ; exit 1; }
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isnull() { case "$1" in "") return 0;; *) return 1;; esac; }
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isnonnull() { ! isnull "$1"; }
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iseq() { case "$1" in "$2") return 0;; *) return 1;; esac; }
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isnoteq() { ! iseq "$1" "$2"; }
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negate() { ! "$@"; }
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# Execute $@ or die
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pipefail()
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{
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"$@" || { echo_info "'$1' failed!"; kill $$; exit 1; }
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}
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isurl() { isnull "${2%%$1://*}"; }
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islocalrepo() { isnull "${1##/*}" && [ ! -e "$1/HEAD" ]; }
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xgrep() { command grep "$@" || : ; }
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# setvar is used for named return variables
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# $1 *must* be a valid variable name, $2 is any value
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#
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# Conventions
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# return variable names are passed with a @ prefix
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# return variable functions use f_ prefix local vars
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# return var consumers use r_ prefix vars (or Titlecase globals)
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setvar()
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{
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isnull "${1##@*}" || echo_die "Missing @ for return variable: $1"
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eval ${1#@}=\$2
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}
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Newline="
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"
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# $1 is return var, $2 is value appended with newline separator
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append_to()
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{
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local f_append_tmp_=
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eval f_append_tmp_=\$${1#@}
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isnull "$f_append_tmp_" || f_append_tmp_=$f_append_tmp_$Newline
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setvar "$1" "$f_append_tmp_$2"
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}
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# Pick words from each line
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# $1 return variable name
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# $2 input value
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pick_fields_1_2()
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{
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local f_ret= f_one= f_two=
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while read f_one f_two _ # from << here-document
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do
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f_ret="$f_ret$f_one $f_two$Newline"
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done <<EOF
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$2
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EOF
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setvar "$1" "${f_ret#$Newline}"
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}
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# Take all lines matching $2 (full line)
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# $1 return variable name
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# $2 filter word
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# $3 input value
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# if $1 is a literal `!', the match is reversed (and arguments shift)
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# we instead remove all lines matching
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filter_to()
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{
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local f_neg= f_line= f_ret= IFS=
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isnoteq "$1" "!" || { f_neg=negate; shift; }
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IFS=$Newline
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for f_line in $3
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do
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$f_neg isnonnull "${f_line##$2}" || f_ret=$f_ret$f_line$Newline
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done
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setvar "$1" "${f_ret%$Newline}"
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}
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# Output the number of lines in $1
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line_count()
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{
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local IFS=
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IFS=$Newline
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set -- $1
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xecho "$#"
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}
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## gitception part
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# Fetch giturl $1, file $2
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gitception_get()
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{
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# Take care to preserve FETCH_HEAD
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local ret_=: obj_id= fet_head="$GIT_DIR/FETCH_HEAD"
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[ -e "$fet_head" ] && command mv -f "$fet_head" "$fet_head.$$~" || :
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git fetch -q -f "$1" "$Gref_rbranch:$Gref" >/dev/null &&
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obj_id="$(git ls-tree "$Gref" | xgrep -E '\b'"$2"'$' | awk '{print $3}')" &&
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isnonnull "$obj_id" && git cat-file blob "$obj_id" && ret_=: ||
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{ ret_=false && : ; }
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[ -e "$fet_head.$$~" ] && command mv -f "$fet_head.$$~" "$fet_head" || :
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$ret_
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}
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anon_commit()
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{
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GIT_AUTHOR_NAME="root" GIT_AUTHOR_EMAIL="root@localhost" \
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GIT_AUTHOR_DATE="1356994801 -0400" GIT_COMMITTER_NAME="root" \
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GIT_COMMITTER_EMAIL="root@localhost" \
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GIT_COMMITTER_DATE="1356994801 -0400" \
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git commit-tree "$@" <<EOF
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Initial commit
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EOF
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}
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# Get 'tree' from $1, change file $2 to obj id $3
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update_tree()
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{
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local tab_=" "
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# $2 is a filename from the repo format
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(set +e;
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git ls-tree "$1" | xgrep -v -E '\b'"$2"'$';
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xecho "100644 blob $3$tab_$2"
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) | git mktree
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}
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# Put giturl $1, file $2
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# depends on previous GET to set $Gref and depends on PUT_FINAL later
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gitception_put()
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{
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local obj_id= tree_id= commit_id=
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obj_id=$(git hash-object -w --stdin) &&
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tree_id=$(update_tree "$Gref" "$2" "$obj_id") &&
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commit_id=$(anon_commit "$tree_id") &&
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git update-ref "$Gref" "$commit_id"
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}
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# Remove giturl $1, file $2
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# depends on previous GET like put
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gitception_remove()
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{
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local tree_id= commit_id= tab_=" "
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# $2 is a filename from the repo format
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tree_id=$(git ls-tree "$Gref" | xgrep -v -E '\b'"$2"'$' | git mktree) &&
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commit_id=$(anon_commit "$tree_id") &&
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git update-ref "$Gref" "$commit_id"
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}
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gitception_new_repo()
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{
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local commit_id= empty_tree=4b825dc642cb6eb9a060e54bf8d69288fbee4904
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# get any file to update Gref, and if it's not updated we create empty
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git update-ref -d "$Gref" || :
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gitception_get "$1" "x" 2>/dev/null >&2 || :
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git rev-parse -q --verify "$Gref" >/dev/null && return 0 ||
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commit_id=$(anon_commit "$empty_tree") &&
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git update-ref "$Gref" "$commit_id"
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}
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## end gitception
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# Fetch repo $1, file $2, tmpfile in $3
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GET()
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{
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if isurl sftp "$1"
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then
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(exec 0>&-; curl -s -S -k "$1/$2") > "$3"
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elif isurl rsync "$1"
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then
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(exec 0>&-; rsync -I -W "${1#rsync://}"/"$2" "$3" >&2)
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elif islocalrepo "$1"
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then
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cat "$1/$2" > "$3"
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else
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gitception_get "${1#gitception://}" "$2" > "$3"
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fi
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}
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# Put repo $1, file $2 or fail, tmpfile in $3
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PUT()
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{
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if isurl sftp "$1"
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then
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curl -s -S -k --ftp-create-dirs -T "$3" "$1/$2"
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elif isurl rsync "$1"
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then
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rsync -I -W "$3" "${1#rsync://}"/"$2" >&2
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elif islocalrepo "$1"
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then
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cat >| "$1/$2" < "$3"
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else
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gitception_put "${1#gitception://}" "$2" < "$3"
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fi
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}
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# Put all PUT changes for repo $1 at once
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PUT_FINAL()
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{
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if isurl sftp "$1" || islocalrepo "$1" || isurl rsync "$1"
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then
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:
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else
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git push --quiet -f "${1#gitception://}" "$Gref:$Gref_rbranch"
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fi
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}
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# Put directory for repo $1
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PUTREPO()
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{
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if isurl sftp "$1"
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then
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:
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elif isurl rsync "$1"
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then
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rsync -q -r --exclude='*' "$Localdir/" "${1#rsync://}" >&2
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elif islocalrepo "$1"
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then
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mkdir -p "$1"
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else
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gitception_new_repo "${1#gitception://}"
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fi
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}
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# For repo $1, delete all newline-separated files in $2
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REMOVE()
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{
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local fn_=
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if isurl sftp "$1"
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then
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# FIXME
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echo_info "sftp: Ignore remove request $1/$2"
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elif isurl rsync "$1"
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then
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xfeed "$2" rsync -I -W -v -r --delete --include-from=- \
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--exclude='*' "$Localdir"/ "${1#rsync://}/" >&2
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elif islocalrepo "$1"
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then
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for fn_ in $2; do
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rm -f "$1"/"$fn_"
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done
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else
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for fn_ in $2; do
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gitception_remove "${1#gitception://}" "$fn_"
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done
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fi
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}
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CLEAN_FINAL()
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{
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if isurl sftp "$1" || islocalrepo "$1" || isurl rsync "$1"
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then
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:
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else
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git update-ref -d "$Gref" || :
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fi
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}
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ENCRYPT()
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{
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rungpg --batch --force-mdc --compress-algo none --trust-model=always --passphrase-fd 3 -c 3<<EOF
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$1
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EOF
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}
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DECRYPT()
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{
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rungpg -q --batch --no-default-keyring --secret-keyring /dev/null \
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--keyring /dev/null --passphrase-fd 3 -d 3<<EOF
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$1
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EOF
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}
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# Encrypt to recipients $1
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PRIVENCRYPT()
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{
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set -- $1
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if isnonnull "$Conf_signkey"; then
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set -- "$@" -u "$Conf_signkey"
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fi
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rungpg --compress-algo none --trust-model=always -se "$@"
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}
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# $1 is the match for good signature, $2 is the textual signers list
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PRIVDECRYPT()
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{
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local status_=
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exec 4>&1 &&
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status_=$(rungpg --status-fd 3 -q -d 3>&1 1>&4) &&
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xfeed "$status_" grep "^\[GNUPG:\] ENC_TO " >/dev/null &&
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(xfeed "$status_" grep -e "$1" >/dev/null || {
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echo_info "Failed to verify manifest signature!" &&
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echo_info "Only accepting signatories: ${2:-(none)}" &&
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return 1
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})
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}
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# Generate $1 random bytes
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genkey()
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{
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rungpg --armor --gen-rand 1 "$1"
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}
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gpg_hash()
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{
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local hash_=
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hash_=$(rungpg --with-colons --print-md "$1" | tr A-F a-f)
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hash_=${hash_#:*:}
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xecho "${hash_%:}"
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}
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|
rungpg()
|
||
|
|
{
|
||
|
|
if isnonnull "$Conf_gpg_args"; then
|
||
|
|
set -- "$Conf_gpg_args" "$@"
|
||
|
|
fi
|
||
|
|
# gpg will fail to run when there is no controlling tty,
|
||
|
|
# due to trying to print messages to it, even if a gpg agent is set
|
||
|
|
# up. --no-tty fixes this.
|
||
|
|
if [ "x$GPG_AGENT_INFO" != "x" ]; then
|
||
|
|
${GPG} --no-tty $@
|
||
|
|
else
|
||
|
|
${GPG} $@
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
# Pass the branch/ref by pipe to git
|
||
|
|
safe_git_rev_parse()
|
||
|
|
{
|
||
|
|
git cat-file --batch-check 2>/dev/null |
|
||
|
|
xgrep -v "missing" | cut -f 1 -d ' '
|
||
|
|
}
|
||
|
|
|
||
|
|
make_new_repo()
|
||
|
|
{
|
||
|
|
echo_info "Setting up new repository"
|
||
|
|
PUTREPO "$URL"
|
||
|
|
|
||
|
|
# Needed assumption: the same user should have no duplicate Repoid
|
||
|
|
Repoid=":id:$(genkey 15)"
|
||
|
|
iseq "${NAME#gcrypt::}" "$URL" ||
|
||
|
|
git config "remote.$NAME.gcrypt-id" "$Repoid"
|
||
|
|
echo_info "Remote ID is $Repoid"
|
||
|
|
Extnlist="extn comment"
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
# $1 return var for goodsig match, $2 return var for signers text
|
||
|
|
read_config()
|
||
|
|
{
|
||
|
|
local recp_= r_tail= r_keyinfo= r_keyfpr= gpg_list= cap_= conf_part= good_sig= signers_=
|
||
|
|
Conf_signkey=$(git config --get "remote.$NAME.gcrypt-signingkey" '.+' ||
|
||
|
|
git config --path user.signingkey || :)
|
||
|
|
conf_part=$(git config --get "remote.$NAME.gcrypt-participants" '.+' ||
|
||
|
|
git config --get gcrypt.participants '.+' || :)
|
||
|
|
Conf_pubish_participants=$(git config --get --bool "remote.$NAME.gcrypt-publish-participants" '.+' ||
|
||
|
|
git config --get --bool gcrypt.publish-participants || :)
|
||
|
|
Conf_gpg_args=$(git config --get gcrypt.gpg-args '.+' || :)
|
||
|
|
|
||
|
|
# Figure out which keys we should encrypt to or accept signatures from
|
||
|
|
if isnull "$conf_part" || iseq "$conf_part" simple
|
||
|
|
then
|
||
|
|
signers_="(default keyring)"
|
||
|
|
Recipients="--throw-keyids --default-recipient-self"
|
||
|
|
good_sig="^\[GNUPG:\] GOODSIG "
|
||
|
|
setvar "$1" "$good_sig"
|
||
|
|
setvar "$2" "$signers_"
|
||
|
|
return 0
|
||
|
|
fi
|
||
|
|
|
||
|
|
for recp_ in $conf_part
|
||
|
|
do
|
||
|
|
gpg_list=$(rungpg --with-colons --fingerprint -k "$recp_")
|
||
|
|
r_tail_=$(echo "$recp_" | sed -e 's/^0x//')
|
||
|
|
filter_to @r_keyinfo "pub*" "$gpg_list"
|
||
|
|
if echo "$recp_" | grep -E -q '^[xA-F0-9]+$'; then # is $recp_ a keyid?
|
||
|
|
filter_to @r_keyfpr "fpr*$r_tail_*" "$gpg_list"
|
||
|
|
else
|
||
|
|
filter_to @r_keyfpr "fpr*" "$gpg_list"
|
||
|
|
fi
|
||
|
|
isnull "$r_keyinfo" || isnonnull "${r_keyinfo##*"$Newline"*}" ||
|
||
|
|
echo_info "WARNING: '$recp_' matches multiple keys, using one"
|
||
|
|
isnull "$r_keyfpr" || isnonnull "${r_keyfpr##*"$Newline"*}" ||
|
||
|
|
echo_info "WARNING: '$recp_' matches multiple fingerprints, using one"
|
||
|
|
r_keyinfo=${r_keyinfo%%"$Newline"*}
|
||
|
|
r_keyfpr=${r_keyfpr%%"$Newline"*}
|
||
|
|
keyid_=$(xfeed "$r_keyinfo" cut -f 5 -d :)
|
||
|
|
fprid_=$(xfeed "$r_keyfpr" cut -f 10 -d :)
|
||
|
|
|
||
|
|
isnonnull "$fprid_" &&
|
||
|
|
signers_="$signers_ $keyid_" &&
|
||
|
|
append_to @good_sig "^\[GNUPG:\] VALIDSIG .*$fprid_$" || {
|
||
|
|
echo_info "WARNING: Skipping missing key $recp_"
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
# Check 'E'ncrypt capability
|
||
|
|
cap_=$(xfeed "$r_keyinfo" cut -f 12 -d :)
|
||
|
|
if ! iseq "${cap_#*E}" "$cap_"; then
|
||
|
|
if [ "$Conf_pubish_participants" = true ]; then
|
||
|
|
Recipients="$Recipients -r $keyid_"
|
||
|
|
else
|
||
|
|
Recipients="$Recipients -R $keyid_"
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
|
||
|
|
if isnull "$Recipients"
|
||
|
|
then
|
||
|
|
echo_info "You have not configured any keys you can encrypt to" \
|
||
|
|
"for this repository"
|
||
|
|
echo_info "Use ::"
|
||
|
|
echo_info " git config gcrypt.participants YOURKEYID"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
setvar "$1" "$good_sig"
|
||
|
|
setvar "$2" "$signers_"
|
||
|
|
}
|
||
|
|
|
||
|
|
ensure_connected()
|
||
|
|
{
|
||
|
|
local manifest_= r_repoid= r_name= url_frag= r_sigmatch= r_signers= \
|
||
|
|
tmp_manifest=
|
||
|
|
|
||
|
|
if isnonnull "$Did_find_repo"
|
||
|
|
then
|
||
|
|
return
|
||
|
|
fi
|
||
|
|
Did_find_repo=no
|
||
|
|
read_config @r_sigmatch @r_signers
|
||
|
|
|
||
|
|
iseq "${NAME#gcrypt::}" "$URL" || r_name=$NAME
|
||
|
|
|
||
|
|
if isurl gitception "$URL" && isnonnull "$r_name"; then
|
||
|
|
git config "remote.$r_name.url" "gcrypt::${URL#gitception://}"
|
||
|
|
echo_info "Updated URL for $r_name, gitception:// -> ()"
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Find the URL fragment
|
||
|
|
url_frag=${URL##*"#"}
|
||
|
|
isnoteq "$url_frag" "$URL" || url_frag=
|
||
|
|
URL=${URL%"#$url_frag"}
|
||
|
|
|
||
|
|
# manifestfile -- sha224 hash if we can, else the default location
|
||
|
|
if isurl sftp "$URL" || islocalrepo "$URL" || isurl rsync "$URL"
|
||
|
|
then
|
||
|
|
# not for gitception
|
||
|
|
isnull "$url_frag" ||
|
||
|
|
Manifestfile=$(xecho_n "$url_frag" | gpg_hash SHA224)
|
||
|
|
else
|
||
|
|
isnull "$url_frag" || Gref_rbranch="refs/heads/$url_frag"
|
||
|
|
fi
|
||
|
|
|
||
|
|
Repoid=
|
||
|
|
isnull "$r_name" ||
|
||
|
|
Repoid=$(git config "remote.$r_name.gcrypt-id" || :)
|
||
|
|
|
||
|
|
|
||
|
|
tmp_manifest="$Tempdir/maniF"
|
||
|
|
GET "$URL" "$Manifestfile" "$tmp_manifest" 2>/dev/null || {
|
||
|
|
echo_info "Repository not found: $URL"
|
||
|
|
if ! isnull "$Repoid"; then
|
||
|
|
echo_info "..but repository ID is set. Aborting."
|
||
|
|
return 1
|
||
|
|
else
|
||
|
|
return 0
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
Did_find_repo=yes
|
||
|
|
echo_info "Decrypting manifest"
|
||
|
|
manifest_=$(PRIVDECRYPT "$r_sigmatch" "$r_signers" < "$tmp_manifest") &&
|
||
|
|
isnonnull "$manifest_" ||
|
||
|
|
echo_die "Failed to decrypt manifest!"
|
||
|
|
rm -f "$tmp_manifest"
|
||
|
|
|
||
|
|
filter_to @Refslist "$Hex40 *" "$manifest_"
|
||
|
|
filter_to @Packlist "pack :*:* *" "$manifest_"
|
||
|
|
filter_to @Keeplist "keep :*:*" "$manifest_"
|
||
|
|
filter_to @Extnlist "extn *" "$manifest_"
|
||
|
|
filter_to @r_repoid "repo *" "$manifest_"
|
||
|
|
|
||
|
|
r_repoid=${r_repoid#repo }
|
||
|
|
r_repoid=${r_repoid% *}
|
||
|
|
if isnull "$Repoid"
|
||
|
|
then
|
||
|
|
echo_info "Remote ID is $r_repoid"
|
||
|
|
Repoid=$r_repoid
|
||
|
|
elif isnoteq "$r_repoid" "$Repoid"
|
||
|
|
then
|
||
|
|
echo_info "WARNING:"
|
||
|
|
echo_info "WARNING: Remote ID has changed!"
|
||
|
|
echo_info "WARNING: from $Repoid"
|
||
|
|
echo_info "WARNING: to $r_repoid"
|
||
|
|
echo_info "WARNING:"
|
||
|
|
Repoid=$r_repoid
|
||
|
|
else
|
||
|
|
return 0
|
||
|
|
fi
|
||
|
|
|
||
|
|
isnull "$r_name" || git config "remote.$r_name.gcrypt-id" "$r_repoid"
|
||
|
|
}
|
||
|
|
|
||
|
|
# $1 is the hash type (SHA256 etc)
|
||
|
|
# $2 the pack id
|
||
|
|
# $3 the key
|
||
|
|
get_verify_decrypt_pack()
|
||
|
|
{
|
||
|
|
local rcv_id= tmp_encrypted=
|
||
|
|
tmp_encrypted="$Tempdir/packF"
|
||
|
|
GET "$URL" "$2" "$tmp_encrypted" &&
|
||
|
|
rcv_id=$(gpg_hash "$1" < "$tmp_encrypted") &&
|
||
|
|
iseq "$rcv_id" "$2" || echo_die "Packfile $2 does not match digest!"
|
||
|
|
DECRYPT "$3" < "$tmp_encrypted"
|
||
|
|
rm -f "$tmp_encrypted"
|
||
|
|
}
|
||
|
|
|
||
|
|
# download all packlines (pack :SHA256:a32abc1231) from stdin (or die)
|
||
|
|
# $1 destdir (when repack, else "")
|
||
|
|
get_pack_files()
|
||
|
|
{
|
||
|
|
local pack_id= r_pack_key_line= htype_= pack_= key_=
|
||
|
|
while IFS=': ' read -r _ htype_ pack_ # <<here-document
|
||
|
|
do
|
||
|
|
isnonnull "$pack_" || continue
|
||
|
|
|
||
|
|
# Get the Packlist line with the key
|
||
|
|
pack_id=":${htype_}:$pack_"
|
||
|
|
filter_to @r_pack_key_line "pack $pack_id *" "$Packlist"
|
||
|
|
key_=${r_pack_key_line#pack $pack_id }
|
||
|
|
|
||
|
|
if isnonnull "${pack_##$Hex40*}" ||
|
||
|
|
isnoteq "$htype_" SHA256 && isnoteq "$htype_" SHA224 &&
|
||
|
|
isnoteq "$htype_" SHA384 && isnoteq "$htype_" SHA512
|
||
|
|
then
|
||
|
|
echo_die "Packline malformed: $pack_id"
|
||
|
|
fi
|
||
|
|
|
||
|
|
get_verify_decrypt_pack "$htype_" "$pack_" "$key_" | \
|
||
|
|
if isnull "${1:-}"
|
||
|
|
then
|
||
|
|
# add to local pack list
|
||
|
|
git index-pack -v --stdin >/dev/null
|
||
|
|
xecho "pack $pack_id" >> "$Localdir/have_packs$GITCEPTION"
|
||
|
|
else
|
||
|
|
git index-pack -v --stdin "$1/${pack_}.pack" >/dev/null
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
}
|
||
|
|
|
||
|
|
# Download and unpack remote packfiles
|
||
|
|
# $1 return var for list of packfiles to delete
|
||
|
|
repack_if_needed()
|
||
|
|
{
|
||
|
|
local n_= m_= kline_= r_line= r_keep_packlist= r_del_list=
|
||
|
|
|
||
|
|
isnonnull "$Packlist" || return 0
|
||
|
|
|
||
|
|
if isnonnull "${GCRYPT_FULL_REPACK:-}"
|
||
|
|
then
|
||
|
|
Keeplist=
|
||
|
|
Repack_limit=0
|
||
|
|
fi
|
||
|
|
|
||
|
|
pick_fields_1_2 @r_del_list "$Packlist"
|
||
|
|
|
||
|
|
n_=$(line_count "$Packlist")
|
||
|
|
m_=$(line_count "$Keeplist")
|
||
|
|
if iseq 0 "$(( $Repack_limit < ($n_ - $m_) ))"; then
|
||
|
|
return
|
||
|
|
fi
|
||
|
|
echo_info "Repacking remote $NAME, ..."
|
||
|
|
|
||
|
|
mkdir "$Tempdir/pack"
|
||
|
|
|
||
|
|
# Split packages to keep and to repack
|
||
|
|
if isnonnull "$Keeplist"; then
|
||
|
|
while read -r _ kline_ _ # <<here-document
|
||
|
|
do
|
||
|
|
isnonnull "$kline_" || continue
|
||
|
|
filter_to @r_line "pack $kline_ *" "$Packlist"
|
||
|
|
append_to @r_keep_packlist "$r_line"
|
||
|
|
filter_to ! @r_del_list "pack $kline_" "$r_del_list"
|
||
|
|
done <<EOF
|
||
|
|
$Keeplist
|
||
|
|
EOF
|
||
|
|
fi
|
||
|
|
|
||
|
|
xfeed "$r_del_list" get_pack_files "$Tempdir/pack/"
|
||
|
|
|
||
|
|
(set +f; pipefail git verify-pack -v "$Tempdir"/pack/*.idx) |
|
||
|
|
grep -E '^[0-9a-f]{40}' | cut -f 1 -d ' '
|
||
|
|
|
||
|
|
Packlist=$r_keep_packlist
|
||
|
|
setvar "$1" "$r_del_list"
|
||
|
|
}
|
||
|
|
|
||
|
|
do_capabilities()
|
||
|
|
{
|
||
|
|
echo_git fetch
|
||
|
|
echo_git push
|
||
|
|
echo_git
|
||
|
|
}
|
||
|
|
|
||
|
|
do_list()
|
||
|
|
{
|
||
|
|
local obj_id= ref_name= line_=
|
||
|
|
ensure_connected
|
||
|
|
|
||
|
|
xecho "$Refslist" | while read line_
|
||
|
|
do
|
||
|
|
isnonnull "$line_" || break
|
||
|
|
obj_id=${line_%% *}
|
||
|
|
ref_name=${line_##* }
|
||
|
|
echo_git "$obj_id" "$ref_name"
|
||
|
|
if iseq "$ref_name" "refs/heads/master"
|
||
|
|
then
|
||
|
|
echo_git "@refs/heads/master HEAD"
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
|
||
|
|
# end with blank line
|
||
|
|
echo_git
|
||
|
|
}
|
||
|
|
|
||
|
|
do_fetch()
|
||
|
|
{
|
||
|
|
# Download packs in the manifest that don't appear in have_packs
|
||
|
|
local pneed_= premote_=
|
||
|
|
|
||
|
|
ensure_connected
|
||
|
|
|
||
|
|
# The `+` for $GITCEPTION is pointless but we will be safe for stacking
|
||
|
|
pick_fields_1_2 @premote_ "$Packlist"
|
||
|
|
if [ -s "$Localdir/have_packs+" ]
|
||
|
|
then
|
||
|
|
pneed_=$(xfeed "$premote_" xgrep -v -x -f "$Localdir/have_packs+")
|
||
|
|
else
|
||
|
|
pneed_=$premote_
|
||
|
|
fi
|
||
|
|
|
||
|
|
xfeed "$pneed_" get_pack_files
|
||
|
|
|
||
|
|
echo_git # end with blank line
|
||
|
|
}
|
||
|
|
|
||
|
|
# do_push PUSHARGS (multiple lines like +src:dst, with both + and src opt.)
|
||
|
|
do_push()
|
||
|
|
{
|
||
|
|
# Security protocol:
|
||
|
|
# Each git packfile is encrypted and then named for the encrypted
|
||
|
|
# file's hash. The manifest is updated with the pack id.
|
||
|
|
# The manifest is encrypted.
|
||
|
|
local r_revlist= pack_id= key_= obj_= src_= dst_= \
|
||
|
|
r_pack_delete= tmp_encrypted= tmp_objlist= tmp_manifest=
|
||
|
|
|
||
|
|
ensure_connected
|
||
|
|
|
||
|
|
if iseq "$Did_find_repo" "no"
|
||
|
|
then
|
||
|
|
make_new_repo
|
||
|
|
fi
|
||
|
|
|
||
|
|
if isnonnull "$Refslist"
|
||
|
|
then
|
||
|
|
# mark all remote refs with ^<sha-1> (if sha-1 exists locally)
|
||
|
|
r_revlist=$(xfeed "$Refslist" cut -f 1 -d ' ' |
|
||
|
|
safe_git_rev_parse | sed -e 's/^\(.\)/^&/')
|
||
|
|
fi
|
||
|
|
|
||
|
|
while IFS=: read -r src_ dst_ # << +src:dst
|
||
|
|
do
|
||
|
|
src_=${src_#+}
|
||
|
|
filter_to ! @Refslist "$Hex40 $dst_" "$Refslist"
|
||
|
|
|
||
|
|
if isnonnull "$src_"
|
||
|
|
then
|
||
|
|
append_to @r_revlist "$src_"
|
||
|
|
obj_=$(xfeed "$src_" safe_git_rev_parse)
|
||
|
|
append_to @Refslist "$obj_ $dst_"
|
||
|
|
fi
|
||
|
|
done <<EOF
|
||
|
|
$1
|
||
|
|
EOF
|
||
|
|
|
||
|
|
tmp_encrypted="$Tempdir/packP"
|
||
|
|
tmp_objlist="$Tempdir/objlP"
|
||
|
|
|
||
|
|
{
|
||
|
|
xfeed "$r_revlist" git rev-list --objects --stdin --
|
||
|
|
repack_if_needed @r_pack_delete
|
||
|
|
} > "$tmp_objlist"
|
||
|
|
|
||
|
|
# Only send pack if we have any objects to send
|
||
|
|
if [ -s "$tmp_objlist" ]
|
||
|
|
then
|
||
|
|
key_=$(genkey "$Packkey_bytes")
|
||
|
|
pack_id=$(export GIT_ALTERNATE_OBJECT_DIRECTORIES=$Tempdir;
|
||
|
|
pipefail git pack-objects --stdout < "$tmp_objlist" |
|
||
|
|
pipefail ENCRYPT "$key_" |
|
||
|
|
tee "$tmp_encrypted" | gpg_hash "$Hashtype")
|
||
|
|
|
||
|
|
append_to @Packlist "pack :${Hashtype}:$pack_id $key_"
|
||
|
|
if isnonnull "$r_pack_delete"
|
||
|
|
then
|
||
|
|
append_to @Keeplist "keep :${Hashtype}:$pack_id 1"
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Generate manifest
|
||
|
|
echo_info "Encrypting to: $Recipients"
|
||
|
|
echo_info "Requesting manifest signature"
|
||
|
|
|
||
|
|
tmp_manifest="$Tempdir/maniP"
|
||
|
|
PRIVENCRYPT "$Recipients" > "$tmp_manifest" <<EOF
|
||
|
|
$Refslist
|
||
|
|
$Packlist
|
||
|
|
$Keeplist
|
||
|
|
repo $Repoid
|
||
|
|
$Extnlist
|
||
|
|
EOF
|
||
|
|
|
||
|
|
# Upload pack
|
||
|
|
if [ -s "$tmp_objlist" ]
|
||
|
|
then
|
||
|
|
PUT "$URL" "$pack_id" "$tmp_encrypted"
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Upload manifest
|
||
|
|
PUT "$URL" "$Manifestfile" "$tmp_manifest"
|
||
|
|
|
||
|
|
rm -f "$tmp_encrypted"
|
||
|
|
rm -f "$tmp_objlist"
|
||
|
|
rm -f "$tmp_manifest"
|
||
|
|
|
||
|
|
# Delete packs
|
||
|
|
if isnonnull "$r_pack_delete"; then
|
||
|
|
REMOVE "$URL" "$(xecho "$r_pack_delete" | \
|
||
|
|
while IFS=': ' read -r _ _ pack_
|
||
|
|
do
|
||
|
|
isnonnull "$pack_" || continue
|
||
|
|
xecho "$pack_"
|
||
|
|
done)"
|
||
|
|
fi
|
||
|
|
|
||
|
|
PUT_FINAL "$URL"
|
||
|
|
|
||
|
|
# ok all updates
|
||
|
|
while IFS=: read -r src_ dst_ # << +src:dst
|
||
|
|
do
|
||
|
|
echo_git "ok $dst_"
|
||
|
|
done <<EOF
|
||
|
|
$1
|
||
|
|
EOF
|
||
|
|
|
||
|
|
echo_git
|
||
|
|
}
|
||
|
|
|
||
|
|
cleanup_tmpfiles()
|
||
|
|
{
|
||
|
|
if isnonnull "${Tempdir%%*."$$"}"; then
|
||
|
|
echo_die "Unexpected Tempdir value: $Tempdir"
|
||
|
|
fi
|
||
|
|
rm -r -f -- "${Tempdir}" >&2
|
||
|
|
}
|
||
|
|
|
||
|
|
setup()
|
||
|
|
{
|
||
|
|
mkdir -p "$Localdir"
|
||
|
|
|
||
|
|
# Set up a subdirectory in /tmp
|
||
|
|
temp_key=$(genkey 9 | tr '/' _)
|
||
|
|
Tempdir="${TMPDIR:-/tmp}/git-remote-gcrypt-${temp_key}.$$"
|
||
|
|
case "${MSYSTEM:-unknown}" in
|
||
|
|
MSYS*|MINGW*)
|
||
|
|
mkdir "${Tempdir}"
|
||
|
|
echo_info "Warning: Not securing tempdir ${Tempdir} because we are on mingw/msys"
|
||
|
|
;;
|
||
|
|
unknown|*)
|
||
|
|
mkdir -m 700 "${Tempdir}"
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
|
||
|
|
trap cleanup_tmpfiles EXIT
|
||
|
|
trap 'exit 1' 1 2 3 15
|
||
|
|
}
|
||
|
|
|
||
|
|
# handle git-remote-helpers protocol
|
||
|
|
gcrypt_main_loop()
|
||
|
|
{
|
||
|
|
local input_= input_inner= r_args= temp_key=
|
||
|
|
|
||
|
|
NAME=$1 # Remote name
|
||
|
|
URL=$2 # Remote URL
|
||
|
|
|
||
|
|
setup
|
||
|
|
|
||
|
|
while read input_
|
||
|
|
do
|
||
|
|
case "$input_" in
|
||
|
|
capabilities)
|
||
|
|
do_capabilities
|
||
|
|
;;
|
||
|
|
list|list\ for-push)
|
||
|
|
do_list
|
||
|
|
;;
|
||
|
|
fetch\ *)
|
||
|
|
r_args=${input_##fetch }
|
||
|
|
while read input_inner
|
||
|
|
do
|
||
|
|
case "$input_inner" in
|
||
|
|
fetch*)
|
||
|
|
r_args= #ignored
|
||
|
|
;;
|
||
|
|
*)
|
||
|
|
break
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
done
|
||
|
|
do_fetch "$r_args"
|
||
|
|
;;
|
||
|
|
push\ *)
|
||
|
|
r_args=${input_##push }
|
||
|
|
while read input_inner
|
||
|
|
do
|
||
|
|
case "$input_inner" in
|
||
|
|
push\ *)
|
||
|
|
append_to @r_args "${input_inner#push }"
|
||
|
|
;;
|
||
|
|
*)
|
||
|
|
break
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
done
|
||
|
|
do_push "$r_args"
|
||
|
|
;;
|
||
|
|
?*)
|
||
|
|
echo_die "Unknown input!"
|
||
|
|
;;
|
||
|
|
*)
|
||
|
|
CLEAN_FINAL "$URL"
|
||
|
|
exit 0
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
done
|
||
|
|
}
|
||
|
|
|
||
|
|
if [ "x$1" = x--check ]
|
||
|
|
then
|
||
|
|
NAME=dummy-gcrypt-check
|
||
|
|
URL=$2
|
||
|
|
setup
|
||
|
|
ensure_connected
|
||
|
|
git remote remove $NAME 2>/dev/null || true
|
||
|
|
if iseq "$Did_find_repo" "no"
|
||
|
|
then
|
||
|
|
exit 100
|
||
|
|
fi
|
||
|
|
else
|
||
|
|
gcrypt_main_loop "$@"
|
||
|
|
fi
|