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date	2003.07.18.16.16.14;	author mholzer;	state dead;
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1.1
date	2003.07.09.16.46.58;	author utx;	state Exp;
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@#! /bin/bash

# Copyright 1999-2003 Gentoo Technologies, Inc.
# $Header: /home/cvsroot/gentoo-x86/app-admin/gentoolkit/files/scripts/revdep-rebuild-2,v 1.1 2003/07/09 16:46:58 utx Exp $

# revdep-rebuild: Reverse dependency rebuilder.
# Author: Stanislav Brabec <utx@@gentoo.org>

# requires: qpkg

# Known problems:
#
# In exact ebuild mode revdep-rebuild can fails to get order packages,
# which are not up to date. This is because emerge first tries to
# merge latest package and last in resort it tries to degrade.
# http://bugs.gentoo.org/show_bug.cgi?id=23018
#
# Rebuild in --package-names mode should be default, but emerge has no
# feature to update to latest version of defined SLOT.
# http://bugs.gentoo.org/show_bug.cgi?id=4698

# Mask of specially evaluated libraries (exactly one space separated).
LD_LIBRARY_MASK="libodbcinst.so libodbc.so libjava.so libjvm.so"

# List of directories to be searched (feel free to edit it)
# Note /usr/libexec and /usr/local/subprefix cotradicts FHS, but are present
# /var/something is for cgi and similar scripts
SEARCH_DIRS="/lib /bin /sbin /usr/lib /usr/bin /usr/sbin /usr/libexec /usr/X11R6/lib /usr/X11R6/bin /usr/X11R6/sbin  /usr/e1* /usr/local /usr/qt* /usr/kde/*/lib /usr/*-*-linux-gnu /opt /var/qmail /var/vpopmail /home/httpd/cgi-bin"

# Base of temporary files names.
LIST=~/.revdep-rebuild

shopt -s nullglob
shopt -s expand_aliases
unalias -a

NO="\x1b[0;0m"
BR="\x1b[0;01m"
CY="\x1b[36;01m"
GR="\x1b[32;01m"
RD="\x1b[31;01m"
YL="\x1b[33;01m"
BL="\x1b[34;01m"

alias echo_v=echo

PACKAGE_NAMES=false
SONAME="not found"
SONAME_GREP=fgrep
SEARCH_BROKEN=true

while : ; do
    case "$1" in
	-h | --help )
	    echo "Usage: $0 [OPTIONS] [--] [EMERGE_OPTIONS]"
	    echo
	    echo "Broken reverse dependency rebuilder."
	    echo
	    echo "  -X, --package-names  recompile based on package names, not exact versions"
	    echo "      --soname SONAME  recompile packages using library with SONAME instead"
	    echo "                       of broken library"
	    echo "      --soname-regexp SONAME"
	    echo "                       the same as --soname, but accepts grep-style regexp"
	    echo "  -q, --quiet          be less verbose"
	    echo
	    echo "Calls emerge, all other options are used for it (e. g. -p, --pretend)."
	    echo
	    echo "Report bugs to <utx@@gentoo.org>"
	    exit 0
	    ;;
	-X | --package-names )
	    PACKAGE_NAMES=true
	    shift
	    ;;
	-q | --quiet )
	    alias echo_v=:
	    shift
	    ;;
	--soname=* )
	    SONAME="${1#*=}"
	    SEARCH_BROKEN=false
	    shift
	    ;;
	--soname )
	    SONAME="$2"
	    SEARCH_BROKEN=false
	    shift 2
	    ;;
	--soname-regexp=* )
	    SONAME="${1#*=}"
	    SONAME_GREP=grep
	    SEARCH_BROKEN=false
	    shift
	    ;;
	--soname-regexp )
	    SONAME="$2"
	    SONAME_GREP=grep
	    SEARCH_BROKEN=false
	    shift 2
	    ;;
	-- )
	    shift
	    break
	    ;;
	* )
	    break
	    ;;
    esac
done

function set_trap () {
    trap "rm_temp $1" SIGHUP SIGINT SIGQUIT SIGABRT SIGTERM
}

function rm_temp () {
    echo " terminated."
    echo "Removing incomplete $1."
    rm $1
    echo
    exit 1
}

if $SEARCH_BROKEN ; then
    SONAME_SEARCH="$SONAME"
    LLIST=$LIST
    HEAD_TEXT="broken by any package update"
    OK_TEXT="Dynamic linking on your system is consistent"
    WORKING_TEXT=" consistency"
else
    SONAME_SEARCH="	$SONAME "
    LLIST=${LIST}_$(echo "$SONAME_SEARCH$SONAME" | md5sum | head -c 8)
    HEAD_TEXT="using given shared object name"
    OK_TEXT="There are no dynamic links to $SONAME"
    WORKING_TEXT=""
fi

echo
echo "Checking reverse dependencies..."
echo "Packages containing binaries and libraries $HEAD_TEXT,"
echo "will be recompiled."

echo
echo -n -e "${GR}Collecting system binaries and libraries...${NO}"
if [ -f $LIST.1_files ] ; then
    echo " using existing $LIST.1_files."
else
    set_trap "$LIST.1_files"
    find $SEARCH_DIRS -type f \( -perm +u+x -o -name '*.so' -o -name '*.so.*' \) 2>/dev/null >$LIST.1_files
    echo -e " done.\n  ($LIST.1_files)"
fi

if $SEARCH_BROKEN ; then
    echo
    echo -n -e "${GR}Collecting complete LD_LIBRARY_PATH...${NO}"
    if [ -f $LIST.2_ldpath ] ; then
	echo " using existing $LIST.2_ldpath."
    else
	set_trap "$LIST.2_ldpath"
	(
	    grep '.*\.so\(\|\..*\)$' <$LIST.1_files | sed 's:/[^/]*$::'
	    sed '/^#/d;s/#.*$//' </etc/ld.so.conf
	) | uniq | sort | uniq |
	tr '\n' : | tr -d '\r' | sed 's/:$//' >$LIST.2_ldpath
	echo -e " done.\n  ($LIST.2_ldpath)"
    fi
    export COMPLETE_LD_LIBRARY_PATH="$(cat $LIST.2_ldpath)"
fi

echo
echo -n -e "${GR}Checking dynamic linking$WORKING_TEXT...${NO}"
if [ -f $LLIST.3_rebuild ] ; then
    echo " using existing $LLIST.3_rebuild."
else
    echo_v
    set_trap "$LLIST.3_rebuild"
    LD_MASK="\\(	$(echo "$LD_LIBRARY_MASK" | sed 's/\./\\./g;s/ / \\|	/g') \\)"
    echo -n >$LLIST.3_rebuild
    cat $LIST.1_files | while read FILE ; do
# Note: double checking seems to be faster than single
# with complete path (special add ons are rare).
	if ldd "$FILE" 2>/dev/null | grep -v "$LD_MASK" |
	    $SONAME_GREP -q "$SONAME_SEARCH" ; then
	    if $SEARCH_BROKEN ; then
		if LD_LIBRARY_PATH="$COMPLETE_LD_LIBRARY_PATH" \
		ldd "$FILE" 2>/dev/null | grep -v "$LD_MASK" |
		    $SONAME_GREP -q "$SONAME_SEARCH" ; then
		    echo "$FILE" >>$LLIST.3_rebuild
		    echo_v "  broken $FILE (requires $(ldd "$FILE" | sed -n 's/	\(.*\) => not found$/\1/p' | tr '\n' ' ' | sed 's/ $//' ))"
		fi
	    else
		echo "$FILE" >>$LLIST.3_rebuild
		echo_v "  found $FILE"
	    fi
	fi
    done
    echo -e " done.\n  ($LLIST.3_rebuild)"
fi

if $PACKAGE_NAMES ; then
    EXACT_EBUILDS=false

    echo
    echo -n -e "${GR}Assigning files to packages...${NO}"
    if [ -f $LLIST.4_packages_raw ] ; then
	echo " using existing $LLIST.4_packages_raw."
    else
	set_trap "$LLIST.4_packages_raw"
	echo -n >$LLIST.4_packages_raw
	echo -n >$LLIST.4_package_owners
	cat $LLIST.3_rebuild | while read FILE ; do
	    PKG="$(qpkg -nc -f "$FILE")"
	    if [ -z "$PKG" ] ; then
		echo -n -e "\n  ${RD}*** $FILE not owned by any package is broken! ***${NO}"
		echo "$FILE -> (none)" >> $LLIST.4_package_owners	    
		echo_v -n -e "\n  $FILE -> (none)"
	    else
		echo "$PKG" >> $LLIST.4_packages_raw
		echo "$FILE -> $PKG" >> $LLIST.4_package_owners	    
		echo_v -n -e "\n  $FILE -> $PKG"
	    fi
	done
	echo_v
	echo -e " done.\n  ($LLIST.4_packages_raw, $LLIST.4_package_owners)"
    fi

    echo
    echo -n -e "${GR}Cleaning list of packages to rebuild...${NO}"
    if [ -f $LLIST.5_packages ] ; then
	echo " using existing $LLIST.5_packages."
    else
	set_trap "$LLIST.5_packages"
	sort <$LLIST.4_packages_raw | uniq >$LLIST.5_packages
	echo -e " done.\n  ($LLIST.5_packages)"
    fi

    RAW_REBUILD_LIST="$(cat $LLIST.5_packages | tr '\n' ' ')"

else
    EXACT_EBUILDS=true

    echo
    echo -n -e "${GR}Assigning files to ebuilds...${NO}"
    if [ -f $LLIST.4_ebuilds ] ; then
	echo " using existing $LLIST.4_ebuilds."
    else
	set_trap "$LLIST.4_ebuilds"
	cat $LLIST.3_rebuild | sed 's/^/obj /;s/$/ /' |
	(
	    cd /var/db/pkg
	    fgrep -l -f - */*/CONTENTS
	) | sed s:/CONTENTS:: > $LLIST.4_ebuilds
	echo -e " done.\n  ($LLIST.4_ebuilds)"
    fi

    RAW_REBUILD_LIST="$(cat $LLIST.4_ebuilds | sed s/^/=/ | tr '\n' ' ')"
fi

echo
echo -n -e "${GR}Evaluating package order...${NO}"
if [ -f $LLIST.5_order ] ; then
    echo " using existing $LLIST.5_order."
else
    if [ ! -z "$RAW_REBUILD_LIST" ] ; then
	REBUILD_GREP="^\\($( (emerge --nospinner --pretend --oneshot --nodeps $RAW_REBUILD_LIST ; echo $? >$LLIST.5_status ) | sed -n 's/\./\\&/g;s/ //g;s/$/\\/;s/\[[^]]*\]//gp' | tr '\n' '|' | sed 's/|$//'))\$"
	if [ $(cat $LLIST.5_status) -gt 0 ] ; then
	    echo ""
	    echo -e "${RD}Warning: Failed to resolve package order."
	    echo -e "Will merge in \"random\" order!${NO}"
	    echo "Possible reasons:"
	    echo "- Some ebuilds are no more in portage tree."
	    echo "- Some ebuilds are masked, try to change ACCEPT_KEYWORDS=\"~<your platform>\""
	    echo "  and/or use /etc/portage/package.unmask"
	    for i in . . . . . ; do
		echo -n -e '\a.'
		sleep 1
	    done
	    ln -f $LLIST.4_ebuilds $LLIST.5_order
	else
	    emerge --nospinner --pretend --oneshot --emptytree $RAW_REBUILD_LIST | sed -n 's/ //g;s/^.*\]//p' | grep "$REBUILD_GREP" >$LLIST.5_order
	fi
    else
	echo -n "" >$LLIST.5_order
    fi
    echo -e " done.\n  ($LLIST.5_order)"
fi

REBUILD_LIST="$(cat $LLIST.5_order | sed s/^/=/ | tr '\n' ' ')"

trap - SIGHUP SIGINT SIGQUIT SIGABRT SIGTERM

if [ -z "$REBUILD_LIST" ] ; then
    echo -e "\n${GR}$OK_TEXT... All done.${NO} "
    rm $LIST.[1-2]_*
    rm $LLIST.[3-9]_*
    exit 0
fi

IS_REAL_MERGE=true
echo " $* " | grep -q '\( -p \| --pretend \)' && IS_REAL_MERGE=false

echo
echo -e "${GR}All prepared. Starting rebuild...${NO}"
echo "emerge --oneshot --nodeps $@@ $REBUILD_LIST"
if $IS_REAL_MERGE ; then
    for i in . . . . . . . . . . ; do
	echo -n -e '\a.'
	sleep 1
    done
    echo
fi

#if $EXACT_EBUILDS ; then
# Uncomment following, if you want to recompile masked ebuilds.
## FIXME: Check for PORTDIR_OVERLAY
#    echo -e "${GR}Temporarilly disablink package mask...${NO}"
#    trap "mv -i /usr/portage/profiles/package.mask.hidden /usr/portage/profiles/package.mask ; echo -e "\\n\\nTerminated." ; exit 1" \
#	SIGHUP SIGINT SIGQUIT SIGABRT SIGTERM
#    mv -i /usr/portage/profiles/package.mask /usr/portage/profiles/package.mask.hidden
#fi

# Run in background to correctly handle Ctrl-C
(
    emerge --oneshot --nodeps $@@ $REBUILD_LIST
    echo $? >$LLIST.6_status
) &
wait

#if $EXACT_EBUILDS ; then
#    mv -i /usr/portage/profiles/package.mask.hidden /usr/portage/profiles/package.mask
#    trap - SIGHUP SIGINT SIGQUIT SIGABRT SIGTERM
#fi

if [ "$(cat $LLIST.6_status)" -gt 0 ] ; then
    echo
    echo -e "${RD}Result is not OK, you have following chances:${NO}"
    echo "- if emerge failed during build, fix the problems and re-run revdep-rebuild"
    echo "    or"
    echo "- use -X or --package-names as first argument (try to rebuild package, not exact"
    echo "  ebuild - ignores SLOT!)"
    echo "    or"
    echo "- set ACCEPT_KEYWORDS=\"~<your platform>\" and/or /etc/portage/package.unmask"
    echo "  (and remove $LLIST.5_order to be evaluated again)"
    echo "    or"
    echo "- modify the above emerge command and run it manually"
    echo "    or"
    echo "- compile or unmerge unsatisfied packages manually, remove temporary files and"
    echo "  try again (you can edit package/ebuild list first)"
    echo
    echo -e "${GR}To remove temporary files, please run:${NO}"
    echo "rm $LIST*.?_*"
else
    if $IS_REAL_MERGE ; then
	trap "echo -e \" terminated. Please remove them manually:\nrm $LIST*.?_*\" ; exit 1" \
	    SIGHUP SIGINT SIGQUIT SIGABRT SIGTERM
	echo -n -e "${GR}Build finished correctly. Removing temporary files...${NO} "
	for i in . . . . . . . . . . ; do
	    echo -n -e '.'
	    sleep 1
	done
	echo
	rm $LIST.[1-2]_*
	rm $LLIST.[3-9]_*
	echo "You can re-run revdep-rebuild to verify that all libraries and binaries"
	echo "are fixed. If some inconsistency remains, it can be orphaned file, deep"
	echo "dependency, binary package or specially evaluated library."
    else
	echo -e "${GR}Now you can remove -p (or --pretend) from arguments and re-run revdep-rebuild.${NO}"
    fi
fi
@


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@revdep-rebuild: help text fixes and package order evaluation fixes
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@d4 1
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# $Header: /home/cvsroot/gentoo-x86/app-admin/gentoolkit/files/scripts/revdep-rebuild,v 1.2 2003/05/09 14:51:33 utx Exp $
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