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101 lines
2.6 KiB
101 lines
2.6 KiB
20 years ago
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#!/bin/sh
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#
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# Copyright (c) 2005, Junio C Hamano
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#
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# Called by git-fetch-script
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# Exits 2 when the remote site does not support dumb server protocol.
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# Usage: git-fetch-dumb-http <head-SHA1> <repo> [ <head> | tag <tag> ]
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. git-sh-setup-script || die "Not a git archive"
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head="$1"
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shift
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. git-parse-remote "$@"
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merge_repo="$_remote_repo"
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merge_head="$_remote_head"
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merge_store="$_remote_store"
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if [ -n "$GIT_SSL_NO_VERIFY" ]; then
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curl_extra_args="-k"
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fi
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http_fetch () {
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# $1 = Remote, $2 = Local
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curl -ns $curl_extra_args "$1" >"$2"
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}
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# Try dumb server protocol
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clone_tmp=".git/clone-tmp$$" &&
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mkdir -p "$clone_tmp" || exit 1
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trap "rm -rf $clone_tmp" 0 1 2 3 15
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http_fetch "$merge_repo/info/refs" "$clone_tmp/refs" &&
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http_fetch "$merge_repo/objects/info/packs" "$clone_tmp/packs" &&
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http_fetch "$merge_repo/info/rev-cache" "$clone_tmp/rev-cache" || exit 2
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# Which packs are we interested in?
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has_missing=,
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while read tag num sha1 type
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do
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case "$tag" in
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T) ;;
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*) continue ;;
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esac
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git-cat-file -t "$sha1" >/dev/null || has_missing="$has_missing$num,"
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done <$clone_tmp/packs
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# Slurp the pack index we do not have all objects for.
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pack_ix=0
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may_want_pack_count=0
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while read tag pack
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do
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case "$tag" in
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P) ;;
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*) break ;; # P records always come first.
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esac
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case "$has_missing" in
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*",$pack_ix,"*)
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name=`expr "$pack" : '\(.*\)\.pack$'` &&
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idx="$name.idx" &&
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http_fetch "$merge_repo/objects/pack/$idx" "$clone_tmp/$idx" &&
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# Note that idx file is sorted --- otherwise we need to sort it here.
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git-show-index <"$clone_tmp/$idx" |
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sed -e 's/^[^ ]* //' >"$clone_tmp/$name.toc" ||
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exit 1
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may_want_pack_count=`expr "$may_want_pack_count" + 1`
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;;
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esac
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pack_ix=`expr "$pack_ix" + 1`
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done <$clone_tmp/packs
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case "$may_want_pack_count" in
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0)
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exit 0 ;;
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esac
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# We want $head. What are the head objects we are missing?
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git-missing-revs $clone_tmp/rev-cache $head >$clone_tmp/missing-revs &&
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sort -o $clone_tmp/missing-revs $clone_tmp/missing-revs || exit 2
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for toc in $clone_tmp/*.toc
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do
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name=`expr $toc : '.*/\([^/]*\)\.toc'` &&
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comm -12 $clone_tmp/missing-revs $toc >$clone_tmp/$name.can
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# FIXME: this is stupid.
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if test -s $clone_tmp/$name.can
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then
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pack="$name.pack" idx="$name.idx" &&
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http_fetch "$merge_repo/objects/pack/$pack" "$clone_tmp/$pack" &&
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git-verify-pack "$clone_tmp/$pack" &&
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mkdir -p "$GIT_OBJECT_DIRECTORY/pack" &&
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mv "$clone_tmp/$pack" "$clone_tmp/$idx" \
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"$GIT_OBJECT_DIRECTORY/pack/" || {
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# remote may just have a stale dumb server information files.
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# and normal pull might succeed.
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exit 2
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}
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fi
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done
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exit 0
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