view hgeditor @ 8590:59acb9c7d90f

url: use CONNECT for HTTPS connections through HTTP proxy (issue967)

urllib2 and httplib does not support using CONNECT proxy requests, but
only regular requests over the proxy. This does not work with HTTPS
requests as they typically require that the client issues a CONNECT to
the proxy to give a direct connection to the remote HTTPS server.

This is solved by duplicating some of the httplib functionality and
tying it together with the keepalive library such that a HTTPS
connection that need to be proxied can be proxied by letting a
connection be established to the proxy server and then subsequently
performing the normal request to the specified server through the
proxy server.

As it stands, the code also purports to support HTTPS proxies, i.e.
proxies that you connect to using SSL. These are extremely rare and
nothing is done to ensure that CONNECT requests can be made to these
as that would require multiple SSL handshakes. This use case is also
not supported by most other contemporary web tools like curl and
Firefox3.

#!/bin/sh
#
# This is an example of using HGEDITOR to create of diff to review the
# changes while commiting.

# If you want to pass your favourite editor some other parameters
# only for Mercurial, modify this:
case "${EDITOR}" in
    "")
        EDITOR="vi"
        ;;
    emacs)
        EDITOR="$EDITOR -nw"
        ;;
    gvim|vim)
        EDITOR="$EDITOR -f -o"
        ;;
esac


HGTMP=""
cleanup_exit() {
    rm -rf "$HGTMP"
}

# Remove temporary files even if we get interrupted
trap "cleanup_exit" 0 # normal exit
trap "exit 255" 1 2 3 6 15 # HUP INT QUIT ABRT TERM

HGTMP="${TMPDIR-/tmp}/hgeditor.$RANDOM.$RANDOM.$RANDOM.$$"
(umask 077 && mkdir "$HGTMP") || {
    echo "Could not create temporary directory! Exiting." 1>&2
    exit 1
}

(
    grep '^HG: changed' "$1" | cut -b 13- | while read changed; do
        "$HG" diff "$changed" >> "$HGTMP/diff"
    done
)

cat "$1" > "$HGTMP/msg"

MD5=$(which md5sum 2>/dev/null) || \
    MD5=$(which md5 2>/dev/null)
[ -x "${MD5}" ] && CHECKSUM=`${MD5} "$HGTMP/msg"`
if [ -s "$HGTMP/diff" ]; then
    $EDITOR "$HGTMP/msg" "$HGTMP/diff" || exit $?
else
    $EDITOR "$HGTMP/msg" || exit $?
fi
[ -x "${MD5}" ] && (echo "$CHECKSUM" | ${MD5} -c >/dev/null 2>&1 && exit 13)

mv "$HGTMP/msg" "$1"

exit $?