proj: Restructure
This commit is contained in:
2
proj/intercept/.gitignore
vendored
Normal file
2
proj/intercept/.gitignore
vendored
Normal file
@@ -0,0 +1,2 @@
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/main
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/main_*
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28
proj/intercept/Makefile
Normal file
28
proj/intercept/Makefile
Normal file
@@ -0,0 +1,28 @@
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CC=gcc
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CFLAGS=-std=c99 -pedantic -Wall -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_SVID_SOURCE -D_POSIX_C_SOURCE=200809L -g
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.PHONY: all clean
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all: default
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default: bin intercept.so main_intercept
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bin:
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mkdir -p bin/
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bin/main.o: ../test1/src/main.c
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$(CC) -c -o $@ $^ $(CFLAGS)
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bin/intercept_preload.o: src/intercept.c
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$(CC) -fPIC -c -o $@ $^ $(CFLAGS) -DINTERCEPT_PRELOAD
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intercept.so: bin/intercept_preload.o
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$(CC) -shared -o $@ $^ $(CFLAGS) -lc -ldl
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main_intercept: bin/main.o src/intercept.c
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$(CC) -o $@ $^ $(CFLAGS) -lc -Wl,--wrap=malloc,--wrap=free,--wrap=calloc,--wrap=realloc,--wrap=reallocarray,--wrap=getopt,--wrap=exit,--wrap=close,--wrap=sigaction,\
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--wrap=sem_init,--wrap=sem_open,--wrap=sem_post,--wrap=sem_wait,--wrap=sem_trywait,--wrap=sem_timedwait,--wrap=sem_getvalue,--wrap=sem_close,--wrap=sem_unlink,--wrap=sem_destroy,\
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--wrap=shm_open,--wrap=shm_unlink,--wrap=mmap,--wrap=munmap,\
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--wrap=ftruncate
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clean:
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rm -rf main_intercept bin/* *.so *.ko *.o
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@@ -45,7 +45,7 @@ static int (*__real_shm_open)(const char *, int, mode_t);
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static int (*__real_shm_unlink)(const char *);
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static void *(*__real_mmap)(void *, size_t, int, int, int, off_t);
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static int (*__real_munmap)(void *, size_t);
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extern int (*__real_ftruncate)(int, off_t);
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static int (*__real_ftruncate)(int, off_t);
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#define load(name) \
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if (((__real_ ## name) = dlsym(RTLD_NEXT, #name)) == NULL) { \
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fprintf(stderr, "intercept: unable to load symbol '%s': %s", #name, strerror(errno)); \
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@@ -558,7 +558,9 @@ static void init(void) {
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return;
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}
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fprintf(stderr, "intercept: intercepting function/system calls and logging to unix socket\n");
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msg("PID:%li", getpid());
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char buf[256] = "";
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const ssize_t ret = readlink("/proc/self/exe", buf, sizeof(buf));
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msg("PID:%li%s%s", getpid(), ret != -1 ? ";PATH:" : "", buf);
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} else if (val && strncmp(val, "tcp://", 6) == 0) {
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mode = 5;
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// TODO socket/tcp mode
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151
proj/server/src/intercept.py → proj/server/src/intercept/__init__.py
Executable file → Normal file
151
proj/server/src/intercept.py → proj/server/src/intercept/__init__.py
Executable file → Normal file
@@ -3,7 +3,6 @@
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from typing import Optional, TypedDict, NotRequired
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from socketserver import UnixStreamServer, StreamRequestHandler, ThreadingMixIn
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import argparse
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import os
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import re
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@@ -21,7 +20,8 @@ class ThreadedUnixStreamServer(ThreadingMixIn, UnixStreamServer):
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class Handler(StreamRequestHandler):
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pid: int
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pid: Optional[int]
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path: Optional[str]
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stack: list[tuple[int, str, tuple]]
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ret_addr: int
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@@ -32,9 +32,11 @@ class Handler(StreamRequestHandler):
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def handle(self):
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first = self.rfile.readline()
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self.pid = int(first.split(b':')[1])
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meta = {a[0]: a[1] for a in [tuple(p.decode('utf-8').split(':', 1)) for p in first.split(b' ', 1)[1].strip().split(b';')]}
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self.pid = int(meta['PID']) if 'PID' in meta else None
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self.path = meta['PATH'] if 'PATH' in meta else None
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self.stack = []
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print(f'Process with PID {self.pid} connected')
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print(f'Process with PID {self.pid} connected ({self.path})')
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self.before()
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try:
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while True:
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@@ -317,136 +319,6 @@ class Handler(StreamRequestHandler):
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raise NotImplementedError()
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class MemoryAllocationTester(Handler):
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allocated: dict[int, tuple[str, int, int]]
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max_allocated: int
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num_malloc: int
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num_realloc: int
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num_free: int
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num_invalid_free: int
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def before(self):
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self.allocated = {}
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self.max_allocated = 0
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self.num_malloc = 0
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self.num_realloc = 0
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self.num_free = 0
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self.num_invalid_free = 0
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def after(self):
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if len(self.allocated) > 0:
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print("Not free'd:")
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for ptr, (func, ret, size) in self.allocated.items():
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print(f' 0x{ptr:x}: {size} bytes ({func}, return address 0x{ret:x})')
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else:
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print("All blocks free'd!")
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print(f'Max allocated: {self.max_allocated} bytes')
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def update_max_allocated(self):
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total = sum(a[2] for a in self.allocated.values())
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if total > self.max_allocated:
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self.max_allocated = total
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def after_malloc(self, size, ret_value, errno=None) -> None:
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self.num_malloc += 1
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if ret_value != 0:
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self.allocated[ret_value] = ('malloc', self.ret_addr, size)
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self.update_max_allocated()
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def after_calloc(self, nmemb, size, ret_value, errno=None) -> None:
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self.num_malloc += 1
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if ret_value != 0:
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self.allocated[ret_value] = ('calloc', self.ret_addr, nmemb * size)
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self.update_max_allocated()
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def after_realloc(self, ptr, size, ret_value, errno=None) -> None:
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self.num_realloc += 1
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if ptr != 0:
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if ret_value != 0:
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v = self.allocated[ptr]
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del self.allocated[ptr]
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self.allocated[ret_value] = (v[0], v[1], size)
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self.update_max_allocated()
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def after_reallocarray(self, ptr, nmemb, size, ret_value, errno=None) -> None:
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self.num_realloc += 1
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if ptr != 0:
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if ret_value != 0:
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v = self.allocated[ptr]
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del self.allocated[ptr]
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self.allocated[ret_value] = (v[0], v[1], nmemb * size)
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self.update_max_allocated()
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def after_free(self, ptr) -> None:
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self.num_free += 1
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if ptr != 0:
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if ptr in self.allocated:
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del self.allocated[ptr]
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else:
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self.num_free -= 1
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self.num_invalid_free += 1
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class ReturnValueCheckTester(Handler):
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pass
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class InterruptedCheckTester(Handler):
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cycles: int = 50
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functions: dict[str, tuple[str or None, str]] = {
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'sem_wait': ('fail EINTR', 'return 0'),
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'sem_trywait': ('fail EINTR', 'return 0'),
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'sem_timedwait': ('fail EINTR', 'return 0'),
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'sem_post': (None, 'return 0'),
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'ftruncate': ('fail EINTR', 'ok'),
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}
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counter: int = 0
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last_func_name: Optional[str] = None
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last_ret_addr: Optional[int] = None
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tested_functions: dict[tuple[str, int], str]
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@property
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def while_testing(self) -> bool:
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return self.counter % self.cycles != 0
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def before(self) -> None:
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self.tested_functions = {}
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def after(self) -> None:
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if self.while_testing:
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self.error()
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for (name, ret_addr), status in self.tested_functions.items():
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print(f'{name} (0x{ret_addr:x}) -> {status}')
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def error(self):
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print(f'Error: Return value and errno EINTR not handled correctly in {self.last_func_name} (return address 0x{self.last_ret_addr:x})')
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self.tested_functions[(self.last_func_name, self.last_ret_addr)] = 'failed'
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self.counter = 0
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self.last_func_name = None
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self.last_ret_addr = None
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def before_fallback(self, func_name: str, *args) -> str:
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if self.while_testing and (self.last_func_name != func_name or self.last_ret_addr != self.ret_addr):
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self.error()
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return 'ok'
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elif func_name not in self.functions:
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return 'ok'
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elif self.functions[func_name][0] is None:
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return self.functions[func_name][1]
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self.counter += 1
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if self.while_testing:
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self.last_ret_addr = self.ret_addr
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self.last_func_name = func_name
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self.tested_functions[(self.last_func_name, self.last_ret_addr)] = 'running'
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return self.functions[func_name][0]
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else:
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self.tested_functions[(self.last_func_name, self.last_ret_addr)] = 'passed'
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self.last_ret_addr = None
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self.last_func_name = None
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return self.functions[func_name][1]
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def intercept(socket: str, handler: type[Handler]) -> None:
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try:
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with ThreadedUnixStreamServer(socket, handler) as server:
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@@ -459,14 +331,3 @@ def intercept(socket: str, handler: type[Handler]) -> None:
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os.unlink(socket)
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except FileNotFoundError:
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pass
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def main() -> None:
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parser = argparse.ArgumentParser()
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parser.add_argument('socket', metavar='FILE')
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args = parser.parse_args()
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intercept(args.socket, Handler)
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if __name__ == '__main__':
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main()
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165
proj/server/src/intercept/standard.py
Normal file
165
proj/server/src/intercept/standard.py
Normal file
@@ -0,0 +1,165 @@
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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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from intercept import *
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FUNCTION_ERRORS: dict[str, list[str]] = {
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'malloc': ['ENOMEM'],
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'calloc': ['ENOMEM'],
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'realloc': ['ENOMEM'],
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'reallocarray': ['ENOMEM'],
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'close': ['EBADF'], # EINTR, EIO
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'sigaction': ['EINVAL'],
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'sem_init': ['EINVAL', 'ENOSYS'],
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'sem_open': ['EACCES', 'EEXIST', 'EINVAL', 'EMFILE', 'ENAMETOOLONG', 'ENFILE', 'ENOENT', 'ENOMEM'],
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'sem_post': ['EINVAL', 'EOVERFLOW'],
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'sem_wait': ['EINTR', 'EINVAL'],
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'sem_trywait': ['EAGAIN', 'EINTR', 'EINVAL'],
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'sem_timedwait': ['EINTR', 'EINVAL', 'ETIMEDOUT'],
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'sem_getvalule': ['EINVAL'],
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'sem_close': ['EINVAL'],
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'sem_unlink': ['EACCES', 'ENAMETOOLONG', 'ENOENT'],
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'sem_destroy': ['EINVAL'],
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'shm_open': ['EACCES', 'EEXIST', 'EINVAL', 'EMFILE', 'ENAMETOOLONG', 'ENFILE', 'ENOENT'],
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'shm_unlink': ['EACCES', 'ENAMETOOLONG', 'ENOENT'],
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'mmap': ['EACCES', 'EBADF', 'EINVAL', 'EMFILE', 'ENODEV', 'ENOMEM', 'ENOTSUP', 'ENXIO', 'EOVERFLOW'], # EAGAIN
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'munmap': ['EINVAL'],
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'ftruncate': ['EINTR', 'EINVAL', 'EFBIG', 'EIO', 'EBADF'],
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}
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SKIP_ERRORS: list[str] = ['EINTR']
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IGNORE_ERRORS: list[str] = ['EINVAL', 'EBADF', 'EOVERFLOW', 'ENAMETOOLONG']
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class MemoryAllocationTester(Handler):
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allocated: dict[int, tuple[str, int, int]]
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max_allocated: int
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num_malloc: int
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num_realloc: int
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num_free: int
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num_invalid_free: int
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def before(self):
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self.allocated = {}
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self.max_allocated = 0
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self.num_malloc = 0
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self.num_realloc = 0
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self.num_free = 0
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self.num_invalid_free = 0
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def after(self):
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if len(self.allocated) > 0:
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print("Not free'd:")
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for ptr, (func, ret, size) in self.allocated.items():
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print(f' 0x{ptr:x}: {size} bytes ({func}, return address 0x{ret:x})')
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else:
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print("All blocks free'd!")
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print(f'Max allocated: {self.max_allocated} bytes')
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def update_max_allocated(self):
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total = sum(a[2] for a in self.allocated.values())
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if total > self.max_allocated:
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self.max_allocated = total
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def after_malloc(self, size, ret_value, errno=None) -> None:
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self.num_malloc += 1
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if ret_value != 0:
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self.allocated[ret_value] = ('malloc', self.ret_addr, size)
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self.update_max_allocated()
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def after_calloc(self, nmemb, size, ret_value, errno=None) -> None:
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self.num_malloc += 1
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if ret_value != 0:
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self.allocated[ret_value] = ('calloc', self.ret_addr, nmemb * size)
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self.update_max_allocated()
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def after_realloc(self, ptr, size, ret_value, errno=None) -> None:
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self.num_realloc += 1
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if ptr != 0:
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if ret_value != 0:
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v = self.allocated[ptr]
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del self.allocated[ptr]
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self.allocated[ret_value] = (v[0], v[1], size)
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self.update_max_allocated()
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def after_reallocarray(self, ptr, nmemb, size, ret_value, errno=None) -> None:
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self.num_realloc += 1
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if ptr != 0:
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if ret_value != 0:
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v = self.allocated[ptr]
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del self.allocated[ptr]
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self.allocated[ret_value] = (v[0], v[1], nmemb * size)
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self.update_max_allocated()
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def after_free(self, ptr) -> None:
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self.num_free += 1
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if ptr != 0:
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if ptr in self.allocated:
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del self.allocated[ptr]
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else:
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self.num_free -= 1
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self.num_invalid_free += 1
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class InterruptedCheckTester(Handler):
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cycles: int = 50
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functions: dict[str, tuple[str or None, str]] = {
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fn: ('fail EINTR' if fn not in ('sem_post',) else None,
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'return 0' if fn.startswith('sem_') else 'ok')
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for fn, errors in FUNCTION_ERRORS.items()
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if 'EINTR' in errors or fn in ('sem_post',)
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}
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counter: int = 0
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last_func_name: Optional[str] = None
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last_ret_addr: Optional[int] = None
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tested_functions: dict[tuple[str, int], str]
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@property
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def while_testing(self) -> bool:
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return self.counter % self.cycles != 0
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def before(self) -> None:
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self.tested_functions = {}
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def after(self) -> None:
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if self.while_testing:
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self.error()
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for (name, ret_addr), status in self.tested_functions.items():
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print(f'{name} (0x{ret_addr:x}) -> {status}')
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def error(self):
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print(f'Error: Return value and errno EINTR not handled correctly in {self.last_func_name} (return address 0x{self.last_ret_addr:x})')
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self.tested_functions[(self.last_func_name, self.last_ret_addr)] = 'failed'
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self.counter = 0
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self.last_func_name = None
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self.last_ret_addr = None
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def before_fallback(self, func_name: str, *args) -> str:
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if self.while_testing and (self.last_func_name != func_name or self.last_ret_addr != self.ret_addr):
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self.error()
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return 'ok'
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elif func_name not in self.functions:
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return 'ok'
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elif self.functions[func_name][0] is None:
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return self.functions[func_name][1]
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self.counter += 1
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if self.while_testing:
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self.last_ret_addr = self.ret_addr
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self.last_func_name = func_name
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self.tested_functions[(self.last_func_name, self.last_ret_addr)] = 'running'
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return self.functions[func_name][0]
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else:
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self.tested_functions[(self.last_func_name, self.last_ret_addr)] = 'passed'
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self.last_ret_addr = None
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self.last_func_name = None
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return self.functions[func_name][1]
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class ReturnValueCheckTester(Handler):
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functions: dict[str, list[str]] = {
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fn: [e for e in errors if e not in SKIP_ERRORS and e not in IGNORE_ERRORS]
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for fn, errors in FUNCTION_ERRORS.items()
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if len(set(errors) - set(SKIP_ERRORS) - set(IGNORE_ERRORS)) > 0
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}
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@@ -1,46 +0,0 @@
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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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||||
import argparse
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||||
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||||
import intercept
|
||||
|
||||
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class TestHandler(intercept.Handler):
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allocated: dict[int, int]
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||||
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def before(self):
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self.allocated = {}
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||||
|
||||
def after(self):
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||||
if len(self.allocated) > 0:
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||||
print("Not free'd:")
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||||
for ptr, size in self.allocated.items():
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print(f' 0x{ptr:x}: {size} bytes')
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else:
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||||
print("All blocks free'd!")
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||||
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||||
def after_malloc(self, size, ret_value, errno=None) -> None:
|
||||
if ret_value != 0:
|
||||
self.allocated[ret_value] = size
|
||||
|
||||
def before_free(self, ptr) -> str:
|
||||
if ptr != 0:
|
||||
del self.allocated[ptr]
|
||||
return 'ok'
|
||||
|
||||
|
||||
class GetoptHandler(intercept.Handler):
|
||||
def after_getopt(self, argc, argv, optstring, ret_value) -> None:
|
||||
print(argc, [v[1] for v in argv[1]], optstring[1], ret_value)
|
||||
|
||||
|
||||
def main() -> None:
|
||||
parser = argparse.ArgumentParser()
|
||||
parser.add_argument('socket', metavar='FILE')
|
||||
args = parser.parse_args()
|
||||
intercept.intercept(args.socket, intercept.MemoryAllocationTester)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
28
proj/server/src/test-interrupts
Executable file
28
proj/server/src/test-interrupts
Executable file
@@ -0,0 +1,28 @@
|
||||
#!/usr/bin/env python3
|
||||
# -*- coding: utf-8 -*-
|
||||
|
||||
import os
|
||||
import argparse
|
||||
import threading
|
||||
import subprocess
|
||||
|
||||
import intercept
|
||||
import intercept.standard
|
||||
|
||||
|
||||
def socket_thread(socket: str) -> None:
|
||||
intercept.intercept(socket, intercept.standard.InterruptedCheckTester)
|
||||
|
||||
|
||||
def main() -> None:
|
||||
parser = argparse.ArgumentParser()
|
||||
args, extra = parser.parse_known_args()
|
||||
socket_name = f'/tmp/intercept.interrupts.{os.getpid()}.sock'
|
||||
t1 = threading.Thread(target=socket_thread, args=(socket_name,))
|
||||
t1.daemon = True
|
||||
t1.start()
|
||||
subprocess.run(extra, env={'LD_PRELOAD': os.getcwd() + '/../../intercept/intercept.so', 'INTERCEPT': 'unix:' + socket_name})
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
28
proj/server/src/test-memory
Executable file
28
proj/server/src/test-memory
Executable file
@@ -0,0 +1,28 @@
|
||||
#!/usr/bin/env python3
|
||||
# -*- coding: utf-8 -*-
|
||||
|
||||
import os
|
||||
import argparse
|
||||
import threading
|
||||
import subprocess
|
||||
|
||||
import intercept
|
||||
import intercept.standard
|
||||
|
||||
|
||||
def socket_thread(socket: str) -> None:
|
||||
intercept.intercept(socket, intercept.standard.MemoryAllocationTester)
|
||||
|
||||
|
||||
def main() -> None:
|
||||
parser = argparse.ArgumentParser()
|
||||
args, extra = parser.parse_known_args()
|
||||
socket_name = f'/tmp/intercept.memory.{os.getpid()}.sock'
|
||||
t1 = threading.Thread(target=socket_thread, args=(socket_name,))
|
||||
t1.daemon = True
|
||||
t1.start()
|
||||
subprocess.run(extra, env={'LD_PRELOAD': os.getcwd() + '/../../intercept/intercept.so', 'INTERCEPT': 'unix:' + socket_name})
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
28
proj/server/src/test-return-values
Executable file
28
proj/server/src/test-return-values
Executable file
@@ -0,0 +1,28 @@
|
||||
#!/usr/bin/env python3
|
||||
# -*- coding: utf-8 -*-
|
||||
|
||||
import os
|
||||
import argparse
|
||||
import threading
|
||||
import subprocess
|
||||
|
||||
import intercept
|
||||
import intercept.standard
|
||||
|
||||
|
||||
def socket_thread(socket: str) -> None:
|
||||
intercept.intercept(socket, intercept.standard.ReturnValueCheckTester)
|
||||
|
||||
|
||||
def main() -> None:
|
||||
parser = argparse.ArgumentParser()
|
||||
args, extra = parser.parse_known_args()
|
||||
socket_name = f'/tmp/intercept.return-values.{os.getpid()}.sock'
|
||||
t1 = threading.Thread(target=socket_thread, args=(socket_name,))
|
||||
t1.daemon = True
|
||||
t1.start()
|
||||
subprocess.run(extra, env={'LD_PRELOAD': os.getcwd() + '/../../intercept/intercept.so', 'INTERCEPT': 'unix:' + socket_name})
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
@@ -4,7 +4,7 @@ CFLAGS=-std=c99 -pedantic -Wall -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_SVID_SOURCE -
|
||||
|
||||
.PHONY: all clean
|
||||
all: default
|
||||
default: bin main intercept.so main_intercept #test_kernel.ko
|
||||
default: bin main
|
||||
|
||||
bin:
|
||||
mkdir -p bin/
|
||||
@@ -12,26 +12,14 @@ bin:
|
||||
bin/main.o: src/main.c
|
||||
$(CC) -c -o $@ $^ $(CFLAGS)
|
||||
|
||||
bin/intercept_preload.o: src/intercept.c
|
||||
$(CC) -fPIC -c -o $@ $^ $(CFLAGS) -DINTERCEPT_PRELOAD
|
||||
|
||||
intercept.so: bin/intercept_preload.o
|
||||
$(CC) -shared -o $@ $^ $(CFLAGS) -lc -ldl
|
||||
|
||||
test_kernel.ko: src/test_kernel.c
|
||||
$(CC) -D__KERNEL__ -DMODULE -I/usr/src/linux/include -o $@ $^
|
||||
|
||||
main: bin/main.o
|
||||
$(CC) -o $@ $^ $(CFLAGS) -lc -lpthread
|
||||
|
||||
main_intercept: bin/main.o src/intercept.c
|
||||
$(CC) -o $@ $^ $(CFLAGS) -lc -Wl,--wrap=malloc,--wrap=free,--wrap=calloc,--wrap=realloc,--wrap=reallocarray,--wrap=getopt,--wrap=exit,--wrap=close,--wrap=sigaction,\
|
||||
--wrap=sem_init,--wrap=sem_open,--wrap=sem_post,--wrap=sem_wait,--wrap=sem_trywait,--wrap=sem_timedwait,--wrap=sem_getvalue,--wrap=sem_close,--wrap=sem_unlink,--wrap=sem_destroy,\
|
||||
--wrap=shm_open,--wrap=shm_unlink,--wrap=mmap,--wrap=munmap,\
|
||||
--wrap=ftruncate
|
||||
|
||||
clean:
|
||||
rm -rf main main_wrapped bin/* *.so *.ko *.o
|
||||
rm -rf main bin/* *.so *.ko *.o
|
||||
|
||||
|
||||
#ifneq ($(KERNELRELEASE),)
|
||||
|
||||
Reference in New Issue
Block a user