kevin/libsodium
1
Fork 0
mirror of https://github.com/jedisct1/libsodium.git synced 2024-12-20 10:37:24 -07:00
Code Releases Wiki Activity
cadee98e13
libsodium/test/default/sodium_utils3.c

60 lines
1.1 KiB
C
Raw Normal View History

Add sodium_{malloc,allocarray,free}() and sodium_mprotect_*() ptr = sodium_malloc(size) returns a pointer from which exactly "size" bytes can be accessed. ptr = sodium_allocarray(count, size) allocates enough storage space for "count" pointers or scalars of unit size "size". In both cases, the region is immediately followed by a guard page. As a result, any attempt to access a memory location after ptr[size - 1] will immediately trigger a segmentation fault. The allocated region is mlock()ed and filled with 0xd0 bytes. A read-only page with the size, a guard page, as well as a canary are placed before the returned pointer. The canary is checked by sodium_free(); as a result, altering data right before ptr is likely to cause sodium_free() to kill the process. sodium_free() munlock()s the region and fills it with zeros before actually calling free(). sodium_mprotect_noaccess(), sodium_mprotect_readonly() and sodium_mprotect_readwrite() can be used to change the protection on the set of allocated pages. Reverting the protection to read+write is not required before calling sodium_free().
2014-07-26 15:52:02 -07:00
CompCert compatibility
2015-10-26 08:59:28 -07:00
#include <stdlib.h>
Add sodium_{malloc,allocarray,free}() and sodium_mprotect_*() ptr = sodium_malloc(size) returns a pointer from which exactly "size" bytes can be accessed. ptr = sodium_allocarray(count, size) allocates enough storage space for "count" pointers or scalars of unit size "size". In both cases, the region is immediately followed by a guard page. As a result, any attempt to access a memory location after ptr[size - 1] will immediately trigger a segmentation fault. The allocated region is mlock()ed and filled with 0xd0 bytes. A read-only page with the size, a guard page, as well as a canary are placed before the returned pointer. The canary is checked by sodium_free(); as a result, altering data right before ptr is likely to cause sodium_free() to kill the process. sodium_free() munlock()s the region and fills it with zeros before actually calling free(). sodium_mprotect_noaccess(), sodium_mprotect_readonly() and sodium_mprotect_readwrite() can be used to change the protection on the set of allocated pages. Reverting the protection to read+write is not required before calling sodium_free().
2014-07-26 15:52:02 -07:00
#include <sys/types.h>
#include <limits.h>
#include <signal.h>
#define TEST_NAME "sodium_utils3"
#include "cmptest.h"
SIGSEGV handlers are incompatible with -fsanitize=address
2014-10-16 14:08:43 -07:00
#ifdef __SANITIZE_ADDRESS__
Turn ASAN errors into warnings in sodium_utils{2,3} tests
2015-04-24 06:11:29 -07:00
# warning The sodium_utils3 test is expected to fail with address sanitizer
SIGSEGV handlers are incompatible with -fsanitize=address
2014-10-16 14:08:43 -07:00
#endif
Mark test functions as static and __attribute__ ((noreturn))
2016-03-26 16:32:25 -07:00
__attribute__ ((noreturn)) static void segv_handler(int sig)
Add sodium_{malloc,allocarray,free}() and sodium_mprotect_*() ptr = sodium_malloc(size) returns a pointer from which exactly "size" bytes can be accessed. ptr = sodium_allocarray(count, size) allocates enough storage space for "count" pointers or scalars of unit size "size". In both cases, the region is immediately followed by a guard page. As a result, any attempt to access a memory location after ptr[size - 1] will immediately trigger a segmentation fault. The allocated region is mlock()ed and filled with 0xd0 bytes. A read-only page with the size, a guard page, as well as a canary are placed before the returned pointer. The canary is checked by sodium_free(); as a result, altering data right before ptr is likely to cause sodium_free() to kill the process. sodium_free() munlock()s the region and fills it with zeros before actually calling free(). sodium_mprotect_noaccess(), sodium_mprotect_readonly() and sodium_mprotect_readwrite() can be used to change the protection on the set of allocated pages. Reverting the protection to read+write is not required before calling sodium_free().
2014-07-26 15:52:02 -07:00
{
Unused param
2016-03-06 06:00:18 -07:00
(void) sig;
Add sodium_{malloc,allocarray,free}() and sodium_mprotect_*() ptr = sodium_malloc(size) returns a pointer from which exactly "size" bytes can be accessed. ptr = sodium_allocarray(count, size) allocates enough storage space for "count" pointers or scalars of unit size "size". In both cases, the region is immediately followed by a guard page. As a result, any attempt to access a memory location after ptr[size - 1] will immediately trigger a segmentation fault. The allocated region is mlock()ed and filled with 0xd0 bytes. A read-only page with the size, a guard page, as well as a canary are placed before the returned pointer. The canary is checked by sodium_free(); as a result, altering data right before ptr is likely to cause sodium_free() to kill the process. sodium_free() munlock()s the region and fills it with zeros before actually calling free(). sodium_mprotect_noaccess(), sodium_mprotect_readonly() and sodium_mprotect_readwrite() can be used to change the protection on the set of allocated pages. Reverting the protection to read+write is not required before calling sodium_free().
2014-07-26 15:52:02 -07:00
printf("Intentional segfault / bus error caught\n");
printf("OK\n");
#ifdef SIGSEGV
signal(SIGSEGV, SIG_DFL);
#endif
#ifdef SIGBUS
signal(SIGBUS, SIG_DFL);
#endif
#ifdef SIGABRT
signal(SIGABRT, SIG_DFL);
#endif
exit(0);
}
Consistent syle for the tests.
2014-09-14 11:32:55 -07:00
int main(void)
Add sodium_{malloc,allocarray,free}() and sodium_mprotect_*() ptr = sodium_malloc(size) returns a pointer from which exactly "size" bytes can be accessed. ptr = sodium_allocarray(count, size) allocates enough storage space for "count" pointers or scalars of unit size "size". In both cases, the region is immediately followed by a guard page. As a result, any attempt to access a memory location after ptr[size - 1] will immediately trigger a segmentation fault. The allocated region is mlock()ed and filled with 0xd0 bytes. A read-only page with the size, a guard page, as well as a canary are placed before the returned pointer. The canary is checked by sodium_free(); as a result, altering data right before ptr is likely to cause sodium_free() to kill the process. sodium_free() munlock()s the region and fills it with zeros before actually calling free(). sodium_mprotect_noaccess(), sodium_mprotect_readonly() and sodium_mprotect_readwrite() can be used to change the protection on the set of allocated pages. Reverting the protection to read+write is not required before calling sodium_free().
2014-07-26 15:52:02 -07:00
{
Consistent syle for the tests.
2014-09-14 11:32:55 -07:00
void *buf;
size_t size;
Add sodium_{malloc,allocarray,free}() and sodium_mprotect_*() ptr = sodium_malloc(size) returns a pointer from which exactly "size" bytes can be accessed. ptr = sodium_allocarray(count, size) allocates enough storage space for "count" pointers or scalars of unit size "size". In both cases, the region is immediately followed by a guard page. As a result, any attempt to access a memory location after ptr[size - 1] will immediately trigger a segmentation fault. The allocated region is mlock()ed and filled with 0xd0 bytes. A read-only page with the size, a guard page, as well as a canary are placed before the returned pointer. The canary is checked by sodium_free(); as a result, altering data right before ptr is likely to cause sodium_free() to kill the process. sodium_free() munlock()s the region and fills it with zeros before actually calling free(). sodium_mprotect_noaccess(), sodium_mprotect_readonly() and sodium_mprotect_readwrite() can be used to change the protection on the set of allocated pages. Reverting the protection to read+write is not required before calling sodium_free().
2014-07-26 15:52:02 -07:00
#ifdef SIGSEGV
signal(SIGSEGV, segv_handler);
#endif
#ifdef SIGBUS
signal(SIGBUS, segv_handler);
#endif
#ifdef SIGABRT
signal(SIGABRT, segv_handler);
#endif
Avoid implicit sodium_malloc(0) in tests
2016-03-25 02:50:52 -07:00
size = 1U + randombytes_uniform(100000U);
Add sodium_{malloc,allocarray,free}() and sodium_mprotect_*() ptr = sodium_malloc(size) returns a pointer from which exactly "size" bytes can be accessed. ptr = sodium_allocarray(count, size) allocates enough storage space for "count" pointers or scalars of unit size "size". In both cases, the region is immediately followed by a guard page. As a result, any attempt to access a memory location after ptr[size - 1] will immediately trigger a segmentation fault. The allocated region is mlock()ed and filled with 0xd0 bytes. A read-only page with the size, a guard page, as well as a canary are placed before the returned pointer. The canary is checked by sodium_free(); as a result, altering data right before ptr is likely to cause sodium_free() to kill the process. sodium_free() munlock()s the region and fills it with zeros before actually calling free(). sodium_mprotect_noaccess(), sodium_mprotect_readonly() and sodium_mprotect_readwrite() can be used to change the protection on the set of allocated pages. Reverting the protection to read+write is not required before calling sodium_free().
2014-07-26 15:52:02 -07:00
buf = sodium_malloc(size);
Add extra assert() in tests allocating memory on the heap.
2014-11-25 17:19:20 -07:00
assert(buf != NULL);
Add sodium_{malloc,allocarray,free}() and sodium_mprotect_*() ptr = sodium_malloc(size) returns a pointer from which exactly "size" bytes can be accessed. ptr = sodium_allocarray(count, size) allocates enough storage space for "count" pointers or scalars of unit size "size". In both cases, the region is immediately followed by a guard page. As a result, any attempt to access a memory location after ptr[size - 1] will immediately trigger a segmentation fault. The allocated region is mlock()ed and filled with 0xd0 bytes. A read-only page with the size, a guard page, as well as a canary are placed before the returned pointer. The canary is checked by sodium_free(); as a result, altering data right before ptr is likely to cause sodium_free() to kill the process. sodium_free() munlock()s the region and fills it with zeros before actually calling free(). sodium_mprotect_noaccess(), sodium_mprotect_readonly() and sodium_mprotect_readwrite() can be used to change the protection on the set of allocated pages. Reverting the protection to read+write is not required before calling sodium_free().
2014-07-26 15:52:02 -07:00
sodium_mprotect_noaccess(buf);
sodium_mprotect_readwrite(buf);
Don't expect signals to work in Javascript
2014-11-24 18:48:51 -07:00
#ifndef __EMSCRIPTEN__
Consistent syle for the tests.
2014-09-14 11:32:55 -07:00
sodium_memzero(((unsigned char *)buf) - 8, 8U);
Add sodium_{malloc,allocarray,free}() and sodium_mprotect_*() ptr = sodium_malloc(size) returns a pointer from which exactly "size" bytes can be accessed. ptr = sodium_allocarray(count, size) allocates enough storage space for "count" pointers or scalars of unit size "size". In both cases, the region is immediately followed by a guard page. As a result, any attempt to access a memory location after ptr[size - 1] will immediately trigger a segmentation fault. The allocated region is mlock()ed and filled with 0xd0 bytes. A read-only page with the size, a guard page, as well as a canary are placed before the returned pointer. The canary is checked by sodium_free(); as a result, altering data right before ptr is likely to cause sodium_free() to kill the process. sodium_free() munlock()s the region and fills it with zeros before actually calling free(). sodium_mprotect_noaccess(), sodium_mprotect_readonly() and sodium_mprotect_readwrite() can be used to change the protection on the set of allocated pages. Reverting the protection to read+write is not required before calling sodium_free().
2014-07-26 15:52:02 -07:00
sodium_mprotect_readonly(buf);
sodium_free(buf);
printf("Underflow not caught\n");
Don't expect signals to work in Javascript
2014-11-24 18:48:51 -07:00
#endif
Add sodium_{malloc,allocarray,free}() and sodium_mprotect_*() ptr = sodium_malloc(size) returns a pointer from which exactly "size" bytes can be accessed. ptr = sodium_allocarray(count, size) allocates enough storage space for "count" pointers or scalars of unit size "size". In both cases, the region is immediately followed by a guard page. As a result, any attempt to access a memory location after ptr[size - 1] will immediately trigger a segmentation fault. The allocated region is mlock()ed and filled with 0xd0 bytes. A read-only page with the size, a guard page, as well as a canary are placed before the returned pointer. The canary is checked by sodium_free(); as a result, altering data right before ptr is likely to cause sodium_free() to kill the process. sodium_free() munlock()s the region and fills it with zeros before actually calling free(). sodium_mprotect_noaccess(), sodium_mprotect_readonly() and sodium_mprotect_readwrite() can be used to change the protection on the set of allocated pages. Reverting the protection to read+write is not required before calling sodium_free().
2014-07-26 15:52:02 -07:00
return 0;
}
Copy Permalink