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// RUN: %clangxx_msan -O0 %s -o %t && %run %t
// RUN: not %run %t NTOP_READ 2>&1 | FileCheck %s --check-prefix=NTOP_READ
// RUN: not %run %t PTON_READ 2>&1 | FileCheck %s --check-prefix=PTON_READ
#include <assert.h>
#include <resolv.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sanitizer/msan_interface.h>
int main(int iArgc, char *szArgv[]) {
char* test = nullptr;
if (iArgc > 1) {
test = szArgv[1];
}
if (test == nullptr) {
// Check NTOP writing
const char *src = "base64 test data";
size_t src_len = strlen(src);
size_t dst_len = ((src_len + 2) / 3) * 4 + 1;
char dst[dst_len];
int res = b64_ntop(reinterpret_cast<const unsigned char *>(src), src_len,
dst, dst_len);
assert(res >= 0);
__msan_check_mem_is_initialized(dst, res);
// Check PTON writing
unsigned char target[dst_len];
res = b64_pton(dst, target, dst_len);
assert(res >= 0);
__msan_check_mem_is_initialized(target, res);
// Check NTOP writing for zero length src
src = "";
src_len = strlen(src);
assert(((src_len + 2) / 3) * 4 + 1 < dst_len);
res = b64_ntop(reinterpret_cast<const unsigned char *>(src), src_len,
dst, dst_len);
assert(res >= 0);
__msan_check_mem_is_initialized(dst, res);
// Check PTON writing for zero length src
dst[0] = '\0';
res = b64_pton(dst, target, dst_len);
assert(res >= 0);
__msan_check_mem_is_initialized(target, res);
return 0;
}
if (strcmp(test, "NTOP_READ") == 0) {
// Check NTOP reading
size_t src_len = 80;
char src[src_len];
__msan_poison(src, src_len);
size_t dst_len = ((src_len + 2) / 3) * 4 + 1;
char dst[dst_len];
int res = b64_ntop(reinterpret_cast<const unsigned char *>(src), src_len,
dst, dst_len);
// NTOP_READ: Uninitialized bytes in __interceptor___b64_ntop
return 0;
}
if (strcmp(test, "PTON_READ") == 0) {
// Check PTON reading
size_t src_len = 80;
char src[src_len];
strcpy(src, "junk longer than zero");
// pretend it is uninitialized
__msan_poison(src, src_len);
unsigned char target[src_len];
int res = b64_pton(src, target, src_len);
// PTON_READ: Uninitialized bytes in __interceptor___b64_pton
return 0;
}
return 0;
}
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