commit: 54102922da2df25535d066899b00f85ff6ea938b
Author: Anthony G. Basile <blueness <AT> gentoo <DOT> org>
AuthorDate: Tue May 27 23:27:10 2014 +0000
Commit: Anthony G. Basile <blueness <AT> gentoo <DOT> org>
CommitDate: Tue May 27 23:27:10 2014 +0000
URL:
http://git.overlays.gentoo.org/gitweb/?p=proj/elfix.git;a=commit;h=54102922
misc/ldd: add code to search paths
---
misc/ldd/ldd.py | 62 ++++++++++++++++++++++++++++++++++++++++-----------------
1 file changed, 44 insertions(+), 18 deletions(-)
diff --git a/misc/ldd/ldd.py b/misc/ldd/ldd.py
index afb03b6..4d6f500 100755
--- a/misc/ldd/ldd.py
+++ b/misc/ldd/ldd.py
@@ -1,6 +1,6 @@
#!/usr/bin/env python
-import sys
+import os, sys
import re, glob
from optparse import OptionParser
@@ -9,6 +9,7 @@ from elftools.common.exceptions import ELFError
from elftools.common.py3compat import bytes2str
from elftools.elf.elffile import ELFFile
from elftools.elf.dynamic import DynamicSection
+from elftools.elf.descriptions import describe_ei_class
class ReadElf(object):
def __init__(self, file):
@@ -16,19 +17,31 @@ class ReadElf(object):
"""
self.elffile = ELFFile(file)
- def display_dynamic_dt_needed(self):
- """ Display the dynamic DT_NEEDED contained in the file
+
+ def elf_class(self):
+ """ Return the ELF Class
+ """
+ header = self.elffile.header
+ e_ident = header['e_ident']
+ return describe_ei_class(e_ident['EI_CLASS'])
+
+ def dynamic_dt_needed(self):
+ """ Return a list of the DT_NEEDED
"""
+ dt_needed = []
for section in self.elffile.iter_sections():
if not isinstance(section, DynamicSection):
continue
for tag in section.iter_tags():
if tag.entry.d_tag == 'DT_NEEDED':
- sys.stdout.write('\t%s\n' % bytes2str(tag.needed) )
+ dt_needed.append(bytes2str(tag.needed))
+ #sys.stdout.write('\t%s\n' % bytes2str(tag.needed) )
+
+ return dt_needed
-def ldpath(ld_so_conf='/etc/ld.so.conf'):
+def ldpaths(ld_so_conf='/etc/ld.so.conf'):
""" Generate paths to search for libraries from ld.so.conf. Recursively
parse included files. We assume correct syntax and the ld.so.cache
is in sync with ld.so.conf.
@@ -38,25 +51,33 @@ def ldpath(ld_so_conf='/etc/ld.so.conf'):
lines = re.sub('#.*', '', lines) # kill comments
lines = list(re.split(':+|\s+|\t+|\n+|,+', lines)) # man 8 ldconfig
+ paths = []
include_globs = []
for l in lines:
if l == '':
- lines.remove('')
+ continue
if l == 'include':
f = lines[lines.index(l) + 1]
- lines.remove(l)
- lines.remove(f)
include_globs.append(f)
+ continue
+ if l not in include_globs:
+ paths.append(os.path.realpath(l))
include_files = []
for g in include_globs:
include_files = include_files + glob.glob('/etc/' + g)
for c in include_files:
- lines = lines + ldpath(c)
+ paths = paths + ldpaths(os.path.realpath(c))
- return list(set(lines))
+ return list(set(paths))
+def dynamic_dt_needed_paths( dt_needed, eclass, paths):
+ for n in dt_needed:
+ for p in paths:
+ print('%s' % p + '/' + n)
+ return
+
SCRIPT_DESCRIPTION = 'Print shared library dependencies'
VERSION_STRING = '%%prog: based on pyelftools %s' % __version__
@@ -72,9 +93,13 @@ def main():
help='Display this information')
options, args = optparser.parse_args()
- #if options.help or len(args) == 0:
- #optparser.print_help()
- #sys.exit(0)
+ if options.help or len(args) == 0:
+ optparser.print_help()
+ sys.exit(0)
+
+ paths = ldpaths()
+ print(paths)
+ sys.exit(0)
for f in args:
with open(f, 'rb') as file:
@@ -82,14 +107,15 @@ def main():
readelf = ReadElf(file)
if len(args) > 1:
sys.stdout.write('%s : \n' % f)
- readelf.display_dynamic_dt_needed()
+ eclass = readelf.elf_class()
+ #sys.stdout.write('\t%s\n' % eclass)
+ dt_needed = readelf.dynamic_dt_needed()
+ dt_needed_paths = dynamic_dt_needed_paths( dt_needed, eclass,
paths)
+ for n in dt_needed:
+ sys.stdout.write('\t%s\n' % n )
except ELFError as ex:
sys.stderr.write('ELF error: %s\n' % ex)
sys.exit(1)
- lines = ldpath()
- print(lines)
-
-
if __name__ == '__main__':
main()
