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# $NetBSD: check-shlibs-elf.awk,v 1.4 2012/06/15 14:46:53 obache Exp $
#
# Copyright (c) 2007 Joerg Sonnenberger <joerg@NetBSD.org>.
# All rights reserved.
#
# This code was developed as part of Google's Summer of Code 2007 program.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# Read a list of potential ELF binaries from stdin.
# For each, extract the DT_RPATH and DT_NEEDED fields.
# Check that DT_RPATH is not relative to WRKDIR.
# Check that DT_NEEDED can be resolved either via DT_RPATH
# or a system specific default path.
# Check that the resolved DSO belongs to full dependency.
#
function shquote(IN, out) {
out = IN;
gsub("\\\\", "\\\\", out);
gsub("\\\n", "\\n", out);
gsub("\\\t", "\\t", out);
gsub(" ", "\\ ", out);
gsub("'", "\\'", out);
gsub("`", "\\`", out);
gsub("\"", "\\\"", out);
gsub(";", "\\;", out);
gsub("&", "\\&", out);
gsub("<", "\\<", out);
gsub(">", "\\>", out);
gsub("\\(", "\\(", out);
gsub("\\)", "\\)", out);
gsub("\\|", "\\|", out);
gsub("\\*", "\\*", out);
gsub("\\?", "\\?", out);
gsub("\\{", "\\{", out);
gsub("\\}", "\\}", out);
gsub("\\[", "\\[", out);
gsub("\\]", "\\]", out);
gsub("\\$", "\\$", out);
gsub("!", "\\!", out);
gsub("#", "\\#", out);
gsub("\\^", "\\^", out);
gsub("~", "\\~", out);
return out;
}
function check_pkg(DSO, pkg, found) {
if (destdir == "")
return 0
cmd = pkg_info_cmd " -Fe " shquote(DSO) " 2> /dev/null"
if ((cmd | getline pkg) < 0) {
close(cmd)
return 0
}
close(cmd)
if (pkg == "")
return 0
found=0
while ((getline < depends_file) > 0) {
if ($3 == pkg) {
found=1
if ($1 != "full")
continue
close(depends_file)
return 0
}
}
close(depends_file)
if (found) {
req_cmd = pkg_info_cmd " -qr " shquote(pkg) " 2> /dev/null"
while ((req_cmd | getline) > 0) {
dpkg = $0
while((getline < depends_file) > 0) {
if ($3 == dpkg && $1 == "full") {
close(depends_file)
close(req_cmd)
return 0
}
}
close(depends_file)
}
close(req_cmd)
}
if (found)
print DSO ": " pkg " is not a runtime dependency"
# Not yet:
# print DSO ": " pkg " is not a dependency"
}
function checkshlib(DSO, needed, rpath, found, dso_rath, got_rpath) {
cmd = readelf " -Wd " shquote(DSO) " 2> /dev/null"
while ((cmd | getline) > 0) {
if ($2 == "(RPATH)") {
sub("^[[:space:]]*0[xX][[:xdigit:]]+[[:space:]]+\\(RPATH\\)[[:space:]]+Library rpath: \\[", "")
dso_rpath = substr($0, 1, length($0) - 1)
if (length(system_rpath) > 0)
split(dso_rpath ":" system_rpath, rpath, ":")
else
split(dso_rpath, rpath, ":")
got_rpath = 1
}
if ($2 == "(NEEDED)") {
sub("^[[:space:]]*0[xX][[:xdigit:]]+[[:space:]]+\\(NEEDED\\)[[:space:]]+Shared library: \\[", "")
needed[substr($0, 1, length($0) - 1)] = ""
}
}
if (!got_rpath)
split(system_rpath, rpath, ":")
close(cmd)
for (p in rpath) {
if (rpath[p] == wrkdir ||
substr(rpath[p], 1, length(wrkdir) + 1) == wrkdir "/") {
print DSO ": rpath relative to WRKDIR"
}
}
for (lib in needed) {
for (p in rpath) {
if (!system("test -f " shquote(cross_destdir rpath[p] "/" lib))) {
check_pkg(rpath[p] "/" lib)
found = 1
break
}
if (!system("test -f " shquote(destdir rpath[p] "/" lib))) {
found = 1
break
}
}
if (found == 0)
print DSO ": missing library: " lib;
}
delete rpath
delete needed
}
BEGIN {
system_rpath = ENVIRON["PLATFORM_RPATH"]
cross_destdir = ENVIRON["CROSS_DESTDIR"]
destdir = ENVIRON["DESTDIR"]
readelf = ENVIRON["PLATFORM_READELF"]
wrkdir = ENVIRON["WRKDIR"]
pkg_info_cmd = ENVIRON["PKG_INFO_CMD"]
depends_file = ENVIRON["DEPENDS_FILE"]
if (readelf == "")
readelf = "readelf"
}
{ checkshlib($0); }
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