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Parse section names.

This commit is contained in:
Jussi Pakkanen 2013-02-03 14:33:14 +02:00
parent 60905c9663
commit 682e5620f8
1 changed files with 19 additions and 6 deletions
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25
rpathtool.py
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@ -16,6 +16,8 @@
import sys, struct import sys, struct
SHT_STRTAB = 3
class SectionHeader(): class SectionHeader():
def __init__(self, ifile): def __init__(self, ifile):
#Elf64_Word #Elf64_Word
@ -35,7 +37,7 @@ class SectionHeader():
#Elf64_Word #Elf64_Word
self.sh_info = struct.unpack('I', ifile.read(4))[0]; self.sh_info = struct.unpack('I', ifile.read(4))[0];
#Elf64_Xword #Elf64_Xword
self.sh_addralign = struct.unpack('Q', ifile.read(4))[0]; self.sh_addralign = struct.unpack('Q', ifile.read(8))[0];
#Elf64_Xword #Elf64_Xword
self.sh_entsize = struct.unpack('Q', ifile.read(8))[0]; self.sh_entsize = struct.unpack('Q', ifile.read(8))[0];
@ -69,15 +71,26 @@ class Elf():
self.bf.seek(self.e_shoff) self.bf.seek(self.e_shoff)
self.sections = [] self.sections = []
for i in range(self.e_shnum): for i in range(self.e_shnum):
self.sections.append(self.bf) self.sections.append(SectionHeader(self.bf))
def remove_rpath(bfile): def read_str(self):
elf = Elf(bfile) arr = []
x = self.bf.read(1)
while x != b'\0':
arr.append(x)
x = self.bf.read(1)
return b''.join(arr)
def print_section_names(self):
section_names = self.sections[self.e_shstrndx]
for i in self.sections:
self.bf.seek(section_names.sh_offset + i.sh_name)
name = self.read_str()
print(name.decode())
if __name__ == '__main__': if __name__ == '__main__':
if len(sys.argv) != 2: if len(sys.argv) != 2:
print('%s: <binary file>' % sys.argv[0]) print('%s: <binary file>' % sys.argv[0])
exit(1) exit(1)
bfile = sys.argv[1] e = Elf(sys.argv[1])
remove_rpath(bfile) e.print_section_names()