#!/bin/bash

# This script reads filenames from STDIN and outputs any relevant provides
# information that needs to be included in the package.

if [ "$1" ]
then
   package_name="$1"
fi

[ -z "$OBJDUMP" ] && OBJDUMP=objdump

filelist=`sed "s/['\"]/\\\&/g"`

solist=$(echo $filelist | grep "\\.so" | grep -v "^/lib/ld.so" | \
	xargs file -L 2>/dev/null | grep "ELF.*shared object" | cut -d: -f1)
pythonlist=
tcllist=

#
# --- Alpha does not mark 64bit dependencies
case `uname -m` in
  alpha*)	mark64="" ;;
  *)		mark64="()(64bit)" ;;
esac

#
# --- Library sonames and weak symbol versions (from glibc).
for f in $solist; do
    soname=$(objdump -p $f | awk '/SONAME/ {print $2}')

    lib64=`if file -L $f 2>/dev/null | \
	grep "ELF 64-bit" >/dev/null; then echo "$mark64"; fi`
    if [ "$soname" != "" ]; then
	if [ ! -L $f ]; then
	    echo $soname$lib64
	    objdump -p $f | awk '
		BEGIN { START=0 ; }
		/Version definitions:/ { START=1; }
		/^[0-9]/ && (START==1) { print $4; }
		/^$/ { START=0; }
	    ' | \
		grep -v $soname | \
		while read symbol ; do
		    echo "$soname($symbol)`echo $lib64 | sed 's/()//'`"
		done
	fi
    else
	echo ${f##*/}$lib64
    fi
done | sort -u

#
# --- Perl modules.
[ -x /usr/lib/rpm/perl.prov ] &&
    echo $filelist | tr '[:blank:]' \\n | grep '\.pm$' | /usr/lib/rpm/perl.prov | sort -u

#
# --- Python modules.
[ -x /usr/lib/rpm/redhat/python.prov -a -n "$pythonlist" ] &&
    echo $pythonlist | tr '[:blank:]' \\n | /usr/lib/rpm/redhat/python.prov | sort -u

#
# --- Tcl modules.
[ -x /usr/lib/rpm/redhat/tcl.prov -a -n "$tcllist" ] &&
    echo $tcllist | tr '[:blank:]' \\n | /usr/lib/rpm/redhat/tcl.prov | sort -u

#
# --- libtool
[ -x /usr/lib/rpm/redhat/find-provides.libtool ] &&
    echo $filelist | tr '[:blank:]' \\n | /usr/lib/rpm/redhat/find-provides.libtool | sort -u

#
# --- any other extra find-provides scripts
for i in /usr/lib/rpm/redhat/find-provides.d/*.prov
do
    [ -x $i ] &&
        (echo $filelist | tr '[:blank:]' \\n | $i | sort -u)
done

#
# --- pkgconfig
[ -x /usr/lib/rpm/redhat/find-provides.pkgconfig ] &&
    echo $filelist | tr '[:blank:]' \\n | /usr/lib/rpm/redhat/find-provides.pkgconfig | sort -u

#
# --- Kernel module imported symbols
#
# Since we don't (yet) get passed the name of the package being built, we
# cheat a little here by looking first for a kernel, then for a kmod.
#

is_kmod=1
for f in $filelist; do
    if [ $(echo "$f" | sed -r -ne 's:^.*/lib/modules/(.*)/(.*).ko$:\2:p') ]
    then
        is_kernel=1;
    fi
    if [ $(echo "$f" | sed -r -ne 's:^.*/boot/(.*):\1:p') ]
    then
	unset is_kmod;
    fi
done
if [ ! "$is_kernel" ] || [ "$package_name" == "kernel" ]
then
    unset is_kmod
fi

[ -x /usr/lib/rpm/redhat/find-provides.ksyms ] && [ "$is_kmod" ] &&
    printf "%s\n" "${filelist[@]}" | /usr/lib/rpm/redhat/find-provides.ksyms

exit 0