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crashtools.py
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#!/usr/bin/env python3
from __future__ import print_function
"LLDB commands to get stuff from crash dumps"
import argparse, re, os, sys, time, subprocess, struct
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("DMPFILE", help="Path to core file", nargs="*")
parser.add_argument(
"-b", "--base", help="Print stack of crashed thread")
parser.add_argument(
"-r", "--storage", help="Path to binary archive")
parser.add_argument(
"-m", "--modules", action="store_true", help="List binaries")
parser.add_argument(
"-a", "--absent", action="store_true",
help="List binaries not in storage")
parser.add_argument(
"-s", "--stat", action="store_true",
help="Print a line of numbers for every file")
parser.add_argument(
"-d", "--download",
help="Symbol server URL to download symbols from")
parser.add_argument(
"-u", "--unchecked", action="store_true",
help="Allow binaries not in archive")
parser.add_argument(
"-n", "--attachname", help="Attach to a live process by name")
parser.add_argument(
"-t", "--threadf", action="store_true",
help="Print frames decoded by lldb (crashed thread)")
parser.add_argument(
"-T", "--threads", action="store_true",
help="Print frames decoded by lldb (each thread)")
parser.add_argument(
"-B", "--bt", action="store_true",
help="Print stack of crashed thread")
parser.add_argument(
"-x", "--thread", action="store_true",
help="Unwind stack by counting PUSH/SUB *,SP instructions in code")
parser.add_argument(
"-z", "--callsites", action="store_true",
help="""
Print all stack words from crashed thread pointing to code after
call instructions
""")
parser.add_argument(
"-y", "--threadn", help="Print all words from stack N")
parser.add_argument(
"-X", "--fa", action="store_true",
help="Print all words from crashed thread using `memory read -fA`")
parser.add_argument(
"-Y", "--threadm",
help="Print all words from stack N using `memory read -fA`")
parser.add_argument(
"-D", "--disassembly", action="store_true",
help="Show disassembly of functions in the stack")
parser.add_argument(
"-S", "--scan", help="Search memory for the contents of file")
parser.add_argument("-v", "--verbose", action="store_true")
parser.add_argument(
"-w", "--dverbose", action="store_true",
help="LLDB verbose output")
parser.add_argument(
"-l", "--long", action="store_true", help="Not abbrev build ids")
try:
import lldb
except ImportError:
if sys.platform.startswith("linux"):
sys.path.append(
"/usr/lib64/python3.6/site-packages")
# "/usr/lib/python2.7/dist-packages/lldb-3.8")
else:
sys.path.append("\
/Library/Developer/CommandLineTools/Library/PrivateFrameworks/LLDB.framework/\
Resources/Python")
import lldb
def check(error):
if error.fail:
raise Exception(str(error))
def cut(s, limit):
return len(s) > (limit+3) and "%s..." % s[:limit] or s
def getId(m, long=False):
s = m.GetUUIDString()
if not s:
return s
s = "".join(s.split("-")).upper() # + "0"
if long:
return s
return s[0:8]
def justifyId(m, long=False):
return (long and "%40s" or "%8s") % getId(m, long)
def nn(n):
n = str(int(n))
return ",".join(re.findall(r"\d{1,3}", n[::-1]))[::-1]
def xx(n):
n = "%X" % n
return ",".join(re.findall(r"[0-9a-fA-F]{1,4}", n[::-1]))[::-1]
ptrSize = 8
class Count:
def __init__(self):
self.absent = 0
self.modules = 0
self.other = 0
self.system = 0
self.store = 0
class WorkCount:
def __init__(self, todo=0):
self.done = 0
self.total = todo
class Util:
def verb(self, message):
if not self.args.verbose:
return
self.print(message)
def print(self, message, count=None):
count = count or hasattr(self, "count") and self.count
if count:
sys.stderr.write("\r[%s / %s] " % (
nn(count.done), nn(count.total)))
sys.stderr.write(message)
sys.stderr.flush()
def setVar(self, name, value):
old = lldb.SBDebugger.GetInternalVariableValue(
name, self.debugger.GetInstanceName())
check(lldb.SBDebugger.SetInternalVariable(
name, value, self.debugger.GetInstanceName()))
self.verb("Variable '%s' was set to '%s' (was '%s')\n" % (
name, value, " ".join(old)))
class SymbolNotOnServer(Exception):
pass
class CallSite:
def __init__(self, target):
self.error = target.error
self.sbt = target.target
self.sbp = target.process
self.args = target.args
self.target = target
class Count:
def __init__(self):
self.words = self.calls = self.destinations = 0
self.pointers = self.readable = 0
self.count = Count()
def loadCallInstr(self, pretaddrl):
self.callerInstrs = []
ra0 = self.target.check(self.sbp.ReadPointerFromMemory(
pretaddrl, self.target.error))
self.ra = ra = lldb.SBAddress(ra0, self.sbt)
if not ra.section.IsValid():
print("%s: %s no section" % (xx(pretaddrl), xx(ra0)))
return
self.count.pointers += 1
if ra.section.file_size == 0:
print("%s: %s no image" % (xx(pretaddrl), xx(ra0)))
return
self.count.readable += 1
if ra.offset == 0:
return
ibufoff = max(ra.offset - 100, 0)
# If that's a real return address, there must be call
# instruction before that. It can be 5, 3 or 2 bytes.
bytes = ra.section.GetSectionData().ReadRawData(
self.error, ibufoff, ra.offset - ibufoff)
ibuf = lldb.SBAddress(ra.section, ibufoff)
if self.error.fail:
raise Exception("%s @ %s %s %s section size = %s" % (
self.error, self.target.getName(ra.module),
xx(self.sbt.GetLoadAddress(ibuf)),
self.describeAddr(ibuf), ra.section.file_size))
call = self.getCall(bytes, ra0)
if call:
cia = lldb.SBAddress(ra0 - len(call.ibs), self.sbt)
self.callerInstrs = self.sbt.GetInstructions(cia, call.ibs)
return call
def getCall(self, bytes, end, verbose=False):
class Call:
def __init__(self, ibs):
self.ibs = ibs
if len(bytes) >= 5 and bytes[-5] == 0xe8:
call = Call(bytes[-5:])
call.destination = struct.unpack("i", bytes[-4:])[0] + end
return call
if bytes[-3] == 0xff:
call = Call(bytes[-3:])
call.destination = None
return call
if verbose:
print(" Unknown instr %x %x %x %x %x" % (
bytes[-5], bytes[-4], bytes[-3], bytes[-2], bytes[-1]))
return False
def describeAddr(self, addr):
off = addr.offset - addr.symbol.addr.offset
desc = "Indescribable"
if addr.symbol.IsValid():
desc = "%s+%d" % ( addr.symbol.name, off)
elif addr.section.IsValid():
desc = "sect %s+%s" % (addr.section.name, xx(addr.offset))
if ".module_image" == addr.section.name:
desc += " (buildId=%s)" % getId(addr.module, self.args.long)
elif addr.module.IsValid():
desc = addr.module.name
return desc
class UnwindFrame(CallSite):
def loadTopOfStack(self, thread, stack):
self.stack = stack
self.pc = thread.frames[0].pc
self.sp = thread.frames[0].sp
self.source = "PC"
return self
def loadReturnAddress(self, loc, stack):
# After call SP points at return address
# We need SP before call
self.stack = stack
self.source = self.descStackPtr(loc)
self.pc = self.target.check(
self.sbp.ReadPointerFromMemory(loc, self.error))
self.sp = loc + ptrSize
return self
def descStackPtr(self, ptr):
return "S-%x" % (self.stack.GetRegionEnd() - ptr)
def calculateFrameSize(self):
self.pushCount = self.popCount = self.spDecrement = 0
for ii in self.insns:
mn = ii.GetMnemonic(self.sbt)
if "pushq" == mn:
self.pushCount += 1
elif "popq" == mn:
self.popCount += 1
elif "subq" == mn:
ops = ii.GetOperands(self.sbt).split(", %rsp")
if len(ops) == 2:
if self.spDecrement:
sys.stdout.write(
"Extra sub SP instruction (1st sub=%X): " % sub)
self.target.printInstruction(ii)
elif not ops[0].startswith("$"):
sys.stdout.write("Non-constant sub SP: ")
self.target.printInstruction(ii)
continue
self.spDecrement += int(ops[0][1:], base=0)
def findCaller(self):
pc = lldb.SBAddress(self.pc, self.sbt)
self.insns = pc.symbol.IsValid() and\
self.target.getFuncInstructions(pc, self.pc)
if self.insns:
self.calculateFrameSize()
self.returnAddrLocation = self.sp +\
(ptrSize*(self.pushCount - self.popCount)) + self.spDecrement
if self.returnAddrLocation >= self.sp:
self.loadCallInstr(self.returnAddrLocation)
return self
else:
print(" popCount=%d pushCount=%d spDecrement=%d, start searching..." % (
self.popCount, self.pushCount, self.spDecrement))
else:
print(
" Instructions unreadable. Starting search for return address...")
reg = lldb.SBMemoryRegionInfo()
check(self.target.process.GetMemoryRegionInfo(self.sp, reg))
# If nothing pushed, return address can be located @ sp
for pretaddrl in range(self.sp, reg.GetRegionEnd(), ptrSize):
self.count.words += 1
call = self.loadCallInstr(pretaddrl)
if not call:
continue
self.count.calls += 1
if not call.destination:
continue
self.count.destinations += 1
# We're looking for the call to an unloaded module
# Therefore it must be call to .plt
if call.destination:
da = self.sbt.ResolveLoadAddress(call.destination)
if da.section.name == ".text":
if 0:
print("Skip:")
for inn in self.callerInstrs:
self.target.printInstruction(inn, True)
self.callerInstrs = None
continue
self.returnAddrLocation = pretaddrl
break
return self
def getReturnAddrLoc(self):
self.findCaller()
if self.insns:
if self.args.disassembly:
for inn in self.insns:
self.target.printInstruction(inn)
print(" ==== end of disassembly")
sys.stdout.write(" %d push, %d pop, %d sub, prev pc @ %s\n" % (
self.pushCount, self.popCount, self.spDecrement,
xx(self.returnAddrLocation)))
else:
sys.stdout.write(
" Tried %d words, %d -> a section, %d readable, %d calls, %d destinations\n" % (
self.count.words, self.count.pointers,
self.count.readable, self.count.calls,
self.count.destinations))
for inn in self.callerInstrs:
self.target.printInstruction(inn, True)
return self.returnAddrLocation
def print(self):
pc = lldb.SBAddress(self.pc, self.sbt)
# sys.stdout.write("\u2666 %s: %s %s %s\n" % (
sys.stdout.write("%s: %s %s %s\n" % (
self.source, xx(self.pc), self.target.getName(pc.module),
self.describeAddr(pc)))
sys.stdout.flush()
class Target(Util):
def __init__(self, args, debugger):
self.args, self.debugger = args, debugger
self.error = lldb.SBError()
self.target = self.check(self.debugger.CreateTarget(
"", "", "", True, self.error))
# Hack: add mapping to nonexistent files so
# ModuleList::GetSharedModule gets called first without a real
# path and finds storage files in target.exec-search-paths
if self.args.storage\
and hasattr(self.target, "AppendImageSearchPath"):
self.check(self.target.AppendImageSearchPath(
"/Volumes", self.args.storage, self.error))
self.check(self.target.AppendImageSearchPath(
"/Applications", self.args.storage, self.error))
if self.args.download:
self.setVar("target.preload-symbols", "false")
def load(self, path):
self.path = path
if self.args.storage:
self.storagePath = os.path.abspath(self.args.storage)
else:
self.storagePath = os.path.dirname(os.path.abspath(self.path))
self.verb("storage='%s'" % self.storagePath)
dirs = [self.storagePath] +\
[os.path.join(self.storagePath, x) for
x in os.listdir(self.storagePath) if
not x.startswith(".")]
# TODO Check spaces in paths
self.setVar("target.exec-search-paths", " ".join(dirs))
self.verb("Loading '%s'..." % self.path)
if sys.version_info[0] < 3:
self.process = self.target.LoadCore(path)
else:
self.process = self.check(
self.target.LoadCore(path, self.error))
for m in self.target.modules:
self.verb("Looking for symbols for '%s'...\n" % (
m.file.fullpath))
pdb = m.file.fullpath + ".pdb"
if not os.path.isfile(pdb):
self.verb("No symbol file '%s'" % pdb)
pdb = m.file.basename + ".pdb"
if not os.path.isfile(pdb):
self.verb("No symbol file '%s'" % pdb)
continue
if 0 and\
not m.file.fullpath.startswith(self.args.storage) and\
not m.file.fullpath.startswith(self.storagePath):
continue
self.runDebuggerCommand("target symbols add %s" % pdb)
if os.path.realpath(m.GetSymbolFileSpec().fullpath) !=\
os.path.realpath(pdb):
raise Exception(
"Symbol file path must be '%s' but is '%s'" % (
pdb, m.GetSymbolFileSpec().fullpath))
self.verb("Module='%s' %d symbols in '%s' %d CUs\n" % (
m.GetFileSpec(),
m.GetNumSymbols(),
m.GetSymbolFileSpec(),
m.GetNumCompileUnits()))
self.verb("DONE\n")
return self
def runDebuggerCommand(self, cmd):
self.verb("Running '%s'..." % cmd)
self.debugger.HandleCommand(cmd)
def attach(self, name):
self.verb("Attaching '%s'..." % name)
self.process = self.check(self.target.Attach(
lldb.SBAttachInfo(name, False), self.error))
self.verb("DONE\n")
return self
def check(self, result):
if self.error.fail:
raise Exception(str(self.error))
return result
storageShort = u"\u25A0"
def getName(self, m):
if not m.IsValid():
return "-"
if self.args.storage and\
m.file.fullpath.startswith(self.args.storage):
return self.storageShort + m.file.fullpath[len(self.args.storage):]
if self.storagePath and\
m.file.fullpath.startswith(self.storagePath):
return self.storageShort + m.file.fullpath[len(self.storagePath):]
parts = m.file.fullpath.split(os.sep)
if len(parts) <= 1:
return m.file.fullpath
return "/%s/.../%s" % (parts[1], parts[-1])
def getSymbolFileName(self, m):
sfs = m.GetSymbolFileSpec()
if not sfs.fullpath:
return sfs
if sfs == m.file:
return "-"
if sfs.dirname and re.match(".+[.]dSYM/", sfs.dirname):
return "dSYM"
if sfs.fullpath.startswith(m.file.fullpath):
return u"\u2026" + sfs.fullpath[len(m.file.fullpath):]
if self.args.storage and sfs.fullpath.startswith(self.args.storage):
return self.storageShort + sfs.fullpath[len(self.args.storage):]
return sfs
def getSourceLine(self, f):
if not f.line_entry.IsValid():
return " "
cwd = os.getcwd().split(os.sep)[-1]
parts = f.line_entry.file.fullpath.split(os.sep)
try:
path = os.sep.join(parts[parts.index(cwd) + 1:])
except ValueError:
path = f.line_entry.file.fullpath
return "%s:%d" % (path, f.line_entry.line)
def getPossibleSourceLines(self, addr, template):
if not addr.line_entry.IsValid():
return []
return self.getPossibleSourceLines2(
addr.line_entry.file, addr.line_entry.line, template)
def getPossibleSourceLines2(self, filespec, lineNumber, template):
cwd = os.getcwd().split(os.sep)[-1]
parts = filespec.fullpath.split(os.sep)[::-1]
bases = [cwd]
if self.args.base:
bases += self.args.base.split(",")
from itertools import takewhile
path = os.sep.join(
list(takewhile(lambda x: x not in bases, parts))[::-1])
if path == filespec.fullpath:
found = 0
if 0:
for root, dirnames, filenames in os.walk("."):
if not filespec.basename in filenames:
continue
yield template % (
os.path.join(root, filespec.basename),
lineNumber)
found += 1
if not found:
yield template % (
filespec.fullpath, lineNumber)
return
yield template % (path, lineNumber)
def printStacks(self):
for t in self.process.threads:
self.printWordsFromStack(t)
def printStackInfo(self, t):
sp = t.frames[0].sp
reg = lldb.SBMemoryRegionInfo()
error = self.process.GetMemoryRegionInfo(sp, reg)
if error.fail:
print("Thread%3d: sp=%s '%s' no region = '%s'" % (
t.idx, xx(t.frames[0].sp), t.GetStopDescription(80), error))
return None
print("Thread%3d: sp=%s in %s-%s (%s/%s words) '%s'" % (
t.idx, xx(t.frames[0].sp),
xx(reg.GetRegionBase()), xx(reg.GetRegionEnd()),
nn((reg.GetRegionEnd() - t.frames[0].sp)/ptrSize),
nn((reg.GetRegionEnd() - reg.GetRegionBase())/ptrSize),
t.GetStopDescription(80)))
return reg
def printDecodedFrames(self, t):
self.prevVals = {}
reg = self.printStackInfo(t)
for f in t.frames:
print("---- %d" % f.idx)
self.printFrame(f, reg)
def printFrame(self, f, reg):
if 1 or self.args.base:
printed = 0
for prefix in self.getPossibleSourceLines(f, "%s:%d: "):
if printed:
sys.stdout.write("...\n")
sys.stdout.write(prefix)
sys.stdout.flush()
printed += 1
print("%s=pc '%s' %s (%s)" % (
xx(f.pc), f.GetFunctionName(),
self.getName(f.addr.module),
self.getSymbolFileName(f.addr.module)))
if f.IsInlined():
print("Real function = %s" % (
f.addr.symbol.name))
deltaMsg = skippedMsg = ""
if f.sp != self.prevVals.get("sp"):
if "sp" in self.prevVals:
delta = f.sp - self.prevVals["sp"]
deltaMsg = "prev+%X " % (delta)
skippedMsg = ", skipped %s" % nn(delta/ptrSize-1)
print("sp=%s %s(%s words%s)" % (
xx(f.sp), deltaMsg,
nn((reg.GetRegionEnd() - f.sp)/ptrSize), skippedMsg))
self.prevVals["sp"] = f.sp
if not self.args.disassembly: return
self.printRegs(f, prevVals)
print("")
if f.IsInlined(): return
insns = self.getFuncInstructions(f)
if insns:
for ii in insns:
self.printInstruction(ii)
return
# arguments, locals, statics, in_scope_only
for v in f.GetVariables(True, True, False, True):
print("'%s' loc='%s' v='%s' t=%s(%d)" % (
v.name, v.location, v.value,
v.type.name, v.type.size))
def printRegs(self, f, prevVals):
for rs in f.GetRegisters():
for v in rs:
if v.name[0] == "r" and\
not v.name in ["rflags", "rip", "rsp"]:
if prevVals.get(v.name) == v.value:
continue
if v.value is None:
continue
sys.stdout.write("%s=%s " % (
v.name, xx(v.GetValueAsUnsigned())))
prevVals[v.name] = v.value
print("")
def printInstruction(self, ii, needCode=False):
ibs = ""
data = ii.GetData(self.target)
bytes = self.check(
data.ReadRawData(self.error, 0, ii.GetByteSize()))
if needCode:
for bv in bytes:
ibs += "%02X " % bv
comment = ii.GetComment(self.target)
if comment:
comment = " ; " + comment
name = ii.GetMnemonic(self.target)
ptr = ii.addr.GetLoadAddress(self.target)
print(" %s %s%s %s%s" % (
xx(ptr), ibs, name, ii.GetOperands(self.target), comment))
if "callq" == name:
call = UnwindFrame.getCall(self, bytes, ptr + len(bytes))
if call.destination:
da = self.target.ResolveLoadAddress(call.destination)
print(" => %s %s %s %s" % (
xx(call.destination), self.getName(da.module),
UnwindFrame.describeAddr(self, da), da.section.name))
def getFuncInstructions(self, f, pc):
# Doesn't work
# insns = f.function.GetInstructions(self.target)
# also: symbol.GetInstructions
size = f.symbol.end_addr.GetOffset() - f.symbol.addr.GetOffset()
secBase = pc - f.offset
#fpos = f.symbol.IsValid() and\
# f.symbol.addr.GetLoadAddress(self.target)
fpos = secBase + f.symbol.addr.offset
if not f.symbol.addr.IsValid():
print("Addr not valid on %s" % f.symbol)
if not fpos or not size:
return
bytes = f.symbol.addr.section.GetSectionData().\
ReadRawData(self.error, f.symbol.addr.offset, size)
if self.error.fail:
bytes = self.process.ReadMemory(fpos, size, self.error)
if self.error.fail:
print("Error reading memory %s size=%s (%s %s(=%s):%s) = '%s'" % (
xx(fpos), xx(size),
f.symbol, f.symbol.addr.section.name,
f.symbol.addr.section.GetLoadAddress(self.target),
xx(f.symbol.addr.offset), self.error))
return
return self.target.GetInstructions(f.symbol.addr, bytes)
def printWordsFromStack(self, n):
if type(n) is int:
t = self.process.GetThreadByIndexID(n)
if not t.IsValid():
raise Exception("No thread %d" % n)
else:
t = n
stack = self.printStackInfo(t)
self.printRegs(t.frames[0], {})
uwf = UnwindFrame(self).loadTopOfStack(t, stack)
if self.args.threadm or self.args.fa:
self.doCmd("memory read --force -fA 0x%X 0x%X" % (
uwf.sp, stack.GetRegionEnd()))
return
if self.args.thread:
while uwf:
uwf.print()
uwf = UnwindFrame(self).loadReturnAddress(
uwf.getReturnAddrLoc(), stack)
cs = CallSite(self)
for pretaddrl in range(uwf.sp, stack.GetRegionEnd(), ptrSize):
if not cs.loadCallInstr(pretaddrl):
continue
print(cs.describeAddr(cs.ra))
for ii in cs.callerInstrs:
self.printInstruction(ii)
def getAscii(self, pos, size):
# ReadCStringFromMemory can't specify the code page
seq = self.process.ReadMemory(pos, size, self.error)
if self.error.fail:
return "error: %s" % self.error
for b in seq:
if b == 0:
return ""
return seq.decode("windows-1251")
def doCmd(self, cmd):
self.verb("cmd: '%s'\n" % cmd)
self.debugger.HandleCommand(cmd)
def describeName(self, path):
bn = os.path.basename(path)
return len(bn) < 40 and bn or bn[:40] + "..."
def printRegions(self):
class Count:
def __init__(self):
self.scanned = self.total = 0
if self.args.scan:
class Sample():
def __init__(self, path):
self.path = path
self.bs = open(path, "rb").read()
if 1:
pp = self.bs.find(b"?")
if pp >= 0:
self.bs = self.bs[pp+1:]
samples = []
if os.path.isdir(self.args.scan):
for name in os.listdir(self.args.scan):
s = Sample(os.path.join(self.args.scan, name))
if len(s.bs) > 0:
samples += [s]
else:
samples = [lSample(self.args.scan)]
count = Count()
regions = self.process.GetMemoryRegions()
r = lldb.SBMemoryRegionInfo()
for i in range(regions.GetSize()):
if not regions.GetMemoryRegionAtIndex(i, r):
raise Exception("TODO")
name = r.GetName()
if name:
name = os.path.basename(name)
size = r.GetRegionEnd() - r.GetRegionBase()
print("%s %s%s%s%s %s +%s %s %s" % (
self.describeName(self.path),
(r.IsReadable() and "r" or "."),
(r.IsWritable() and "w" or "."),
(r.IsExecutable() and "x" or "."),
(r.IsMapped() and "m" or "."),
xx(r.GetRegionBase()), nn(size),
name, r.GetNumDirtyPages()))
# if not r.IsReadable(): # or r.IsExecutable():
# continue
if self.args.scan:
count.total += size
# self.error.Clear() doesn't work
self.error = lldb.SBError()
all = self.process.ReadMemory(r.GetRegionBase(), size, self.error)
if self.error.fail or all is None:
print("%s reading %s bytes from %s" % (
all and self.error, xx(size), xx(r.GetRegionBase())))
continue
count.scanned += len(all)
for sample in samples:
biggerSize = len(sample.bs) + 40
p = -1
while True:
p = all.find(sample.bs, p + 1)
if p < 0:
break
b = self.process.ReadMemory(
r.GetRegionBase() + p, biggerSize, self.error)
if self.error.fail:
print("%s" % self.error)
continue
print("%s found='%s'" % (sample.path, b))
if self.args.scan:
print("Scanned %s/%s" % (nn(count.scanned), nn(count.total)))
def replaceModuleFromStorage(self, m):
"""
Only need to call this if exec-search-paths doesn't pick up the
image for some reason
"""
for ver in ["."] + os.listdir(self.args.storage):
path = os.path.join(self.args.storage, ver, m.file.basename)
if not os.path.isfile(path):
continue
# path, architecture, UUID, symfile
new = self.target.AddModule(path, None, None, None)
if not new:
raise Exception("%s not added" % path)
if new.uuid != m.uuid:
self.verb("Skipping %s (%s) for '%s'\n" % (
new.file.fullpath, new.uuid, m.file.basename))
self.target.RemoveModule(new)
continue
if m.num_sections != new.num_sections:
self.verb(
"Module %s: num_sections differ,\n%d in %s\n%d in %s" % (
m.uuid, m.num_sections, m.file.fullpath,
new.num_sections, new.file.fullpath))
self.target.RemoveModule(new)
continue
for i in range(m.num_sections):
check(self.target.SetSectionLoadAddress(
new.sections[i],
m.sections[i].GetLoadAddress(self.target)))
self.target.RemoveModule(m)
return
msg = ("'%s' (%s) not in storage" % (
m.file.fullpath, m.uuid))
if self.args.unchecked:
self.verb(msg)
else:
raise Exception(msg)
def fixModulesNotInStorage(self):
# some modules get removed
for m in self.target.modules[:]:
if m.file.fullpath.startswith(self.args.storage):
continue
if m.file.fullpath.startswith("/Volumes"):
self.replaceModuleFromStorage(m)
if m.file.fullpath.startswith("/Applications"):
self.replaceModuleFromStorage(m)
def printModules(self, tool):
count = Count()
mtime = time.localtime(os.path.getmtime(self.path))
if self.args.modules:
print("\
nsect, all sections size on disk, id, load addr, name, symfile")
for m in self.target.modules:
path = m.file.fullpath;
parts = path.split("/")
if len(parts) > 1:
if self.args.storage and\
m.file.fullpath.startswith(self.args.storage):
count.store += 1
elif parts[1] in ["Volumes", "Applications"]:
count.other += 1
else:
count.system += 1
else:
count.other += 1
name = self.getName(m)
fsize = sum(s.file_size for s in m.sections)
if fsize == 0:
count.absent += 1
if self.args.absent:
if fsize != 0:
continue
print(time.strftime("%Y-%m-%d %H:%M| %%s %%s", mtime) % (
(self.args.stat and m.uuid or self.path), name))
continue
elif self.args.modules:
print("%2d %08X %s %s '%s' %s" % (
m.num_sections, fsize, justifyId(m, self.args.long),
xx(self.getSomeLoadAddress(m)), name,
self.getSymbolFileName(m)))
if m.GetUUIDString():
print(
"curl -L https://debuginfod.debian.net/buildid/%s/debuginfo -o %s.pdb" % (
# "curl -L https://debuginfod.ubuntu.com/buildid/%s/debuginfo -o %s.pdb" % (
getId(m, True).lower(), m.file.basename))
if fsize and 0:
def printSec(prefix, sec):
print("%s%s" % (prefix, sec.name))
for i in range(sec.GetNumSubSections()):
printSec(prefix + " ", sec.GetSubSectionAtIndex(i))
for sec in m.sections:
printSec(" ", sec)
if 1:
print("gdb -ex 'set sysroot %s' %s %s" % (
os.path.dirname(self.target.executable.fullpath),
self.target.executable, self.path))
if self.args.stat:
if not hasattr(tool, "statHeaderPrinted"):
print(" modules: total, system, store, other, absent")
tool.statHeaderPrinted = True
print(
self.getTime() + "%3d %3d %3d %3d %3d %11s %11s %s '%s'" % (
self.target.GetNumModules(),
count.system, count.store, count.other,
count.absent, cut(self.path, 8),
cut(self.target.executable.basename, 8),
self.process.selected_thread.frames[0].addr,
self.process.selected_thread.GetStopDescription(80)))
def getSomeLoadAddress(self, m):
for s in m.sections:
for i in range(s.GetNumSubSections()):
ss = s.GetSubSectionAtIndex(i)
if ss.GetLoadAddress(self.target) != 0xFFFFFFFFFFFFFFFF:
return s.GetLoadAddress(self.target)
print("Invalid load address for '%s'" % (ss.name))
if s.GetLoadAddress(self.target) != 0xFFFFFFFFFFFFFFFF:
break
print("Invalid load address for '%s'" % (s.name))
return s.GetLoadAddress(self.target)
def getTime(self):
mtime = time.localtime(os.path.getmtime(self.path))
return time.strftime("%Y-%m-%d %H:%M| ", mtime)
def queueDownloadSymbols(self, server):
if not self.args.storage:
raise Exception("Can't download without storage dir")
work = []
for m in self.target.modules:
if not m.file.fullpath.startswith(self.args.storage):
continue
self.verb("Full=%s\n" % m.file.fullpath)
work.append(DownloadTemplate(
server, "%s/%s/%s.dSYM.tar.bz2", m))
if 0: # found this in 1 file on gh, but it never worked
work.append(DownloadTemplate(
server, "%s/%s/%s.tar.bz2", m))
return work
class DownloadTemplate:
def __init__(self, server, tmpl, m):
self.server = server
self.template = tmpl
self.module = m
def run(self, tool):
m = self.module
url = self.server.getUrl(self.template % (
m.file.basename, getId(m, self.args.long), m.file.basename))
name = url.split("/")[-1].split(".tar.bz2")[0]
expected = os.path.join(m.file.dirname, name)
if os.path.isdir(expected):
tool.verb("Already have %s\n" % expected)
return
# Better have private tmp for each version so nothing gets mixed
tmp = os.path.join(m.file.dirname, "tmp")
if not os.path.isdir(tmp):
os.mkdir(tmp)
try:
self.server.download(url, tmp, tool, useCurl=True)
except SymbolNotOnServer:
print("%s not found" % url)
return
self.rename(os.path.join(tmp, name), expected, tool)
def rename(self, src, dst, tool):
tool.verb("Renaming %s -> %s" % (src, dst))
os.rename(src, dst)
class Server:
def __init__(self, args):
self.args = args
self.hasResumableDownloads = True
def startCurlWithResumeEnabled(self, url, dir):
name = url.split(os.sep)[-1]
curl = subprocess.Popen(
["curl", "-L", "-C", "-", url, "-o", name], cwd=dir)
return (curl, name)
def shortenFile(self, path, amount):
with open(path, "+b") as f:
f.truncate(os.path.getsize(path) - amount)
def getUrl(self, path):
prefix = self.args.download
if not prefix.endswith("/"):
if not path.startswith("/"):
prefix += "/"
return prefix + path
def download(self, url, dir, tool, useCurl=False, tarBz2=True):
tool.print("Downloading %s -> %s..." % (url, dir))
if not tarBz2:
import bz2
bz2dec = bz2.BZ2Decompressor()
count = None
if useCurl:
if self.hasResumableDownloads:
curl, name = self.startCurlWithResumeEnabled(url, dir)
if curl.wait() == 33:
# Some servers break if we have full content...
self.shortenFile(os.path.join(dir, name), 1)
curl, _ = self.startCurlWithResumeEnabled(url, dir)
if curl.wait() == 33:
self.hasResumableDownloads = False
elif curl.wait() != 0:
raise Exception("curl.wait() = %d", curl.wait())
src = open(os.path.join(dir, name), "rb")
count = WorkCount(os.path.getsize(os.path.join(dir, name)))
if not self.hasResumableDownloads:
curl = subprocess.Popen(
["curl", "-L", url], stdout=subprocess.PIPE)
src = curl.stdout
else:
import urllib.request
src = urllib.request.urlopen(url)
if src.getcode() == 404:
raise SymbolNotOnServer(src.getcode())
elif src.getcode() != 200:
raise Exception("src.getcode() = %d" % src.getcode())
tar = subprocess.Popen(
["tar", "xv%s" % (tarBz2 and "j" or "")],
stdin=subprocess.PIPE, cwd=dir)
while True:
p = src.read(16384)
if not p:
break
try:
message = p.decode("utf-8")
except Exception:
message = None
if message == "Symbol Not Found":
raise SymbolNotOnServer(message)
if count:
count.done += len(p)
tool.print("unpacking...", count)
if not tarBz2:
p = bz2dec.decompress(p)
try:
tar.stdin.write(p)
except EOFError:
pass # tar exited?
tar.stdin.close()
if tar.wait() != 0:
raise Exception("tar.wait() = %d", tar.wait())
class Tool(Util):
def __init__(self, args, debugger):
self.args, self.debugger = args, debugger
self.work = []
if self.debugger is None:
self.verb("Starting debugger...")
self.debugger = lldb.SBDebugger.Create()
self.verb("DONE name=%s\n" % self.debugger.GetInstanceName())
# This is faster than replacing modules in fixModulesNotInStorage
if self.args.storage:
self.args.storage = self.args.storage.rstrip("/")
if self.args.dverbose:
# doesn't check categories
if not self.debugger.EnableLog("lldb", ["dyld"]):