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+ GNU GENERAL PUBLIC LICENSE
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+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any 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
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ <program> Copyright (C) <year> <name of author>
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
--- /dev/null
+#!/bin/sh
+#
+# git-remote-gcrypt
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) version 2 or any 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
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+# See README.rst for usage instructions
+
+set -e # errexit
+set -f # noglob
+set -C # noclobber
+
+export GITCEPTION="${GITCEPTION:-}+" # Reuse $Gref except when stacked
+Gref="refs/gcrypt/gitception$GITCEPTION"
+Gref_rbranch="refs/heads/master"
+Packkey_bytes=63 # nbr random bytes for packfile keys, any >= 256 bit is ok
+Hashtype=SHA256 # SHA512 SHA384 SHA256 SHA224 supported.
+Manifestfile=91bd0c092128cf2e60e1a608c31e92caf1f9c1595f83f2890ef17c0e4881aa0a
+Hex40="[a-f0-9]"
+Hex40=$Hex40$Hex40$Hex40$Hex40$Hex40$Hex40$Hex40$Hex40
+Hex40=$Hex40$Hex40$Hex40$Hex40$Hex40 # Match SHA-1 hexdigest
+GPG="$(git config --get "gpg.program" '.+' || echo gpg)"
+
+Did_find_repo= # yes for connected, no for no repo
+Localdir="${GIT_DIR:=.git}/remote-gcrypt"
+Tempdir=
+
+Repoid=
+Refslist=
+Packlist=
+Keeplist=
+Extnlist=
+Repack_limit=25
+
+Recipients=
+
+# compat/utility functions
+# xfeed: The most basic output function puts $1 into the stdin of $2..$#
+xfeed()
+{
+ local input_=
+ input_=$1; shift
+ "$@" <<EOF
+$input_
+EOF
+}
+xecho() { xfeed "$*" cat; }
+xecho_n() { xecho "$@" | tr -d \\n ; } # kill newlines
+echo_git() { xecho "$@" ; } # Code clarity
+echo_info() { xecho "gcrypt:" "$@" >&2; }
+echo_die() { echo_info "$@" ; exit 1; }
+
+isnull() { case "$1" in "") return 0;; *) return 1;; esac; }
+isnonnull() { ! isnull "$1"; }
+iseq() { case "$1" in "$2") return 0;; *) return 1;; esac; }
+isnoteq() { ! iseq "$1" "$2"; }
+negate() { ! "$@"; }
+
+# Execute $@ or die
+pipefail()
+{
+ "$@" || { echo_info "'$1' failed!"; kill $$; exit 1; }
+}
+
+isurl() { isnull "${2%%$1://*}"; }
+islocalrepo() { isnull "${1##/*}" && [ ! -e "$1/HEAD" ]; }
+
+xgrep() { command grep "$@" || : ; }
+
+# setvar is used for named return variables
+# $1 *must* be a valid variable name, $2 is any value
+#
+# Conventions
+# return variable names are passed with a @ prefix
+# return variable functions use f_ prefix local vars
+# return var consumers use r_ prefix vars (or Titlecase globals)
+setvar()
+{
+ isnull "${1##@*}" || echo_die "Missing @ for return variable: $1"
+ eval ${1#@}=\$2
+}
+
+Newline="
+"
+
+# $1 is return var, $2 is value appended with newline separator
+append_to()
+{
+ local f_append_tmp_=
+ eval f_append_tmp_=\$${1#@}
+ isnull "$f_append_tmp_" || f_append_tmp_=$f_append_tmp_$Newline
+ setvar "$1" "$f_append_tmp_$2"
+}
+
+# Pick words from each line
+# $1 return variable name
+# $2 input value
+pick_fields_1_2()
+{
+ local f_ret= f_one= f_two=
+ while read f_one f_two _ # from << here-document
+ do
+ f_ret="$f_ret$f_one $f_two$Newline"
+ done <<EOF
+$2
+EOF
+ setvar "$1" "${f_ret#$Newline}"
+}
+
+# Take all lines matching $2 (full line)
+# $1 return variable name
+# $2 filter word
+# $3 input value
+# if $1 is a literal `!', the match is reversed (and arguments shift)
+# we instead remove all lines matching
+filter_to()
+{
+ local f_neg= f_line= f_ret= IFS=
+ isnoteq "$1" "!" || { f_neg=negate; shift; }
+ IFS=$Newline
+ for f_line in $3
+ do
+ $f_neg isnonnull "${f_line##$2}" || f_ret=$f_ret$f_line$Newline
+ done
+ setvar "$1" "${f_ret%$Newline}"
+}
+
+# Output the number of lines in $1
+line_count()
+{
+ local IFS=
+ IFS=$Newline
+ set -- $1
+ xecho "$#"
+}
+
+
+## gitception part
+# Fetch giturl $1, file $2
+gitception_get()
+{
+ # Take care to preserve FETCH_HEAD
+ local ret_=: obj_id= fet_head="$GIT_DIR/FETCH_HEAD"
+ [ -e "$fet_head" ] && command mv -f "$fet_head" "$fet_head.$$~" || :
+ git fetch -q -f "$1" "$Gref_rbranch:$Gref" >/dev/null &&
+ obj_id="$(git ls-tree "$Gref" | xgrep -E '\b'"$2"'$' | awk '{print $3}')" &&
+ isnonnull "$obj_id" && git cat-file blob "$obj_id" && ret_=: ||
+ { ret_=false && : ; }
+ [ -e "$fet_head.$$~" ] && command mv -f "$fet_head.$$~" "$fet_head" || :
+ $ret_
+}
+
+anon_commit()
+{
+ GIT_AUTHOR_NAME="root" GIT_AUTHOR_EMAIL="root@localhost" \
+ GIT_AUTHOR_DATE="1356994801 -0400" GIT_COMMITTER_NAME="root" \
+ GIT_COMMITTER_EMAIL="root@localhost" \
+ GIT_COMMITTER_DATE="1356994801 -0400" \
+ git commit-tree "$@" <<EOF
+Initial commit
+EOF
+}
+
+# Get 'tree' from $1, change file $2 to obj id $3
+update_tree()
+{
+ local tab_=" "
+ # $2 is a filename from the repo format
+ (set +e;
+ git ls-tree "$1" | xgrep -v -E '\b'"$2"'$';
+ xecho "100644 blob $3$tab_$2"
+ ) | git mktree
+}
+
+# Put giturl $1, file $2
+# depends on previous GET to set $Gref and depends on PUT_FINAL later
+gitception_put()
+{
+ local obj_id= tree_id= commit_id=
+ obj_id=$(git hash-object -w --stdin) &&
+ tree_id=$(update_tree "$Gref" "$2" "$obj_id") &&
+ commit_id=$(anon_commit "$tree_id") &&
+ git update-ref "$Gref" "$commit_id"
+}
+
+# Remove giturl $1, file $2
+# depends on previous GET like put
+gitception_remove()
+{
+ local tree_id= commit_id= tab_=" "
+ # $2 is a filename from the repo format
+ tree_id=$(git ls-tree "$Gref" | xgrep -v -E '\b'"$2"'$' | git mktree) &&
+ commit_id=$(anon_commit "$tree_id") &&
+ git update-ref "$Gref" "$commit_id"
+}
+
+gitception_new_repo()
+{
+ local commit_id= empty_tree=4b825dc642cb6eb9a060e54bf8d69288fbee4904
+ # get any file to update Gref, and if it's not updated we create empty
+ git update-ref -d "$Gref" || :
+ gitception_get "$1" "x" 2>/dev/null >&2 || :
+ git rev-parse -q --verify "$Gref" >/dev/null && return 0 ||
+ commit_id=$(anon_commit "$empty_tree") &&
+ git update-ref "$Gref" "$commit_id"
+}
+## end gitception
+
+# Fetch repo $1, file $2, tmpfile in $3
+GET()
+{
+ if isurl sftp "$1"
+ then
+ (exec 0>&-; curl -s -S -k "$1/$2") > "$3"
+ elif isurl rsync "$1"
+ then
+ (exec 0>&-; rsync -I -W "${1#rsync://}"/"$2" "$3" >&2)
+ elif islocalrepo "$1"
+ then
+ cat "$1/$2" > "$3"
+ else
+ gitception_get "${1#gitception://}" "$2" > "$3"
+ fi
+}
+
+# Put repo $1, file $2 or fail, tmpfile in $3
+PUT()
+{
+ if isurl sftp "$1"
+ then
+ curl -s -S -k --ftp-create-dirs -T "$3" "$1/$2"
+ elif isurl rsync "$1"
+ then
+ rsync -I -W "$3" "${1#rsync://}"/"$2" >&2
+ elif islocalrepo "$1"
+ then
+ cat >| "$1/$2" < "$3"
+ else
+ gitception_put "${1#gitception://}" "$2" < "$3"
+ fi
+}
+
+# Put all PUT changes for repo $1 at once
+PUT_FINAL()
+{
+ if isurl sftp "$1" || islocalrepo "$1" || isurl rsync "$1"
+ then
+ :
+ else
+ git push --quiet -f "${1#gitception://}" "$Gref:$Gref_rbranch"
+ fi
+}
+
+# Put directory for repo $1
+PUTREPO()
+{
+ if isurl sftp "$1"
+ then
+ :
+ elif isurl rsync "$1"
+ then
+ rsync -q -r --exclude='*' "$Localdir/" "${1#rsync://}" >&2
+ elif islocalrepo "$1"
+ then
+ mkdir -p "$1"
+ else
+ gitception_new_repo "${1#gitception://}"
+ fi
+}
+
+# For repo $1, delete all newline-separated files in $2
+REMOVE()
+{
+ local fn_=
+ if isurl sftp "$1"
+ then
+ # FIXME
+ echo_info "sftp: Ignore remove request $1/$2"
+ elif isurl rsync "$1"
+ then
+ xfeed "$2" rsync -I -W -v -r --delete --include-from=- \
+ --exclude='*' "$Localdir"/ "${1#rsync://}/" >&2
+ elif islocalrepo "$1"
+ then
+ for fn_ in $2; do
+ rm -f "$1"/"$fn_"
+ done
+ else
+ for fn_ in $2; do
+ gitception_remove "${1#gitception://}" "$fn_"
+ done
+ fi
+}
+
+CLEAN_FINAL()
+{
+ if isurl sftp "$1" || islocalrepo "$1" || isurl rsync "$1"
+ then
+ :
+ else
+ git update-ref -d "$Gref" || :
+ fi
+}
+
+ENCRYPT()
+{
+ rungpg --batch --force-mdc --compress-algo none --trust-model=always --passphrase-fd 3 -c 3<<EOF
+$1
+EOF
+}
+
+DECRYPT()
+{
+ rungpg -q --batch --no-default-keyring --secret-keyring /dev/null \
+ --keyring /dev/null --passphrase-fd 3 -d 3<<EOF
+$1
+EOF
+}
+
+# Encrypt to recipients $1
+PRIVENCRYPT()
+{
+ set -- $1
+ if isnonnull "$Conf_signkey"; then
+ set -- "$@" -u "$Conf_signkey"
+ fi
+ rungpg --compress-algo none --trust-model=always -se "$@"
+}
+
+# $1 is the match for good signature, $2 is the textual signers list
+PRIVDECRYPT()
+{
+ local status_=
+ exec 4>&1 &&
+ status_=$(rungpg --status-fd 3 -q -d 3>&1 1>&4) &&
+ xfeed "$status_" grep "^\[GNUPG:\] ENC_TO " >/dev/null &&
+ (xfeed "$status_" grep -e "$1" >/dev/null || {
+ echo_info "Failed to verify manifest signature!" &&
+ echo_info "Only accepting signatories: ${2:-(none)}" &&
+ return 1
+ })
+}
+
+# Generate $1 random bytes
+genkey()
+{
+ rungpg --armor --gen-rand 1 "$1"
+}
+
+gpg_hash()
+{
+ local hash_=
+ hash_=$(rungpg --with-colons --print-md "$1" | tr A-F a-f)
+ hash_=${hash_#:*:}
+ xecho "${hash_%:}"
+}
+
+rungpg()
+{
+ if isnonnull "$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%%*."$$"}"; then
+ echo_die "Unexpected Tempdir value: $Tempdir"
+ fi
+ rm -r -f -- "${Tempdir}" >&2
+}
+
+setup()
+{
+ mkdir -p "$Localdir"
+
+ # Set up a subdirectory in /tmp
+ temp_key=$(genkey 9 | tr '/' _)
+ Tempdir="${TMPDIR:-/tmp}/git-remote-gcrypt-${temp_key}.$$"
+ mkdir -m 700 "${Tempdir}"
+
+ 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
projects / gamesguru / git-remote-gcrypt.git / commitdiff