from __future__ import print_function
import idc
from ida_kernwin import jumpto, get_screen_ea
import ida_bytes
import ida_idaapi
import idautils
import ida_funcs
import ida_gdl
import ida_nalt

info = ida_idaapi.get_inf_structure()

def find_end_array_passwd(ea_start):
    start = block.start_ea
    end = info.max_ea
    while start <= end:
        # TODO: loop over head until first xref to find
        start = ida_bytes.next_head(start, end)

def treat_array_passwd_line(ea):
    #TODO
    pass

def treat_first_ldr(ea, ins):
    array_passwd_start = list(idautils.DataRefsFrom(list(idautils.DataRefsFrom(ea))[0]))[0]
    array_passwd_end = find_end_array_passwd(array_passwd_start)
    for idx in range(array_passwd_start, array_passwd_end, 0x8):
        treat_array_passwd_line(idx)

for entry in idautils.Entries():
    ith, ord, ea, name = entry
    if name == "getpwuid":
        f = ida_funcs.get_func(ea)
        for ea in idautils.Heads(f.start_ea, f.end_ea):
            ins = idautils.DecodeInstruction(ea)
            if ins.itype == 0x1e:
                treat_first_ldr(ea, ins)
                break