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cpp/ql/test/experimental/query-tests/Security/CWE/CWE-243/semmle/tests/IncorrectChangingWorkingDirectory.expected

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+| test.cpp:12:7:12:12 | call to chroot | Creation of chroot Jail Without Changing Working Directory out |
+| test.cpp:29:3:29:7 | call to chdir | chdir unchecked return value. |

cpp/ql/test/experimental/query-tests/Security/CWE/CWE-243/semmle/tests/IncorrectChangingWorkingDirectory.qlref

@@ -0,0 +1 @@
+experimental/Security/CWE/CWE-243/IncorrectChangingWorkingDirectory.ql

cpp/ql/test/experimental/query-tests/Security/CWE/CWE-243/semmle/tests/test.cpp

@@ -0,0 +1,46 @@
+typedef int FILE;
+#define size_t int
+size_t fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream);
+FILE *fopen(const char *filename, const char *mode);
+int fread(char *buf, int size, int count, FILE *fp);
+int fclose(FILE *fp);
+int chroot(char *path);
+int chdir(char *path);
+void exit(int status);
+
+int funTest1(){
+  if (chroot("/myFold/myTmp") == -1) {  // BAD
+    exit(-1);
+  }
+  return 0;
+}
+
+int funTest2(){  
+  if (chdir("/myFold/myTmp") == -1) { // GOOD
+    exit(-1);
+  }
+  if (chroot("/myFold/myTmp") == -1) {  // GOOD
+    exit(-1);
+  }
+  return 0;
+}
+
+int funTest3(){  
+  chdir("/myFold/myTmp"); // BAD
+  return 0;
+}
+int main(int argc, char *argv[])
+{
+  if(argc = 0) {
+    funTest3();
+    return 2;
+  }
+  if(argc = 1)
+    funTest1();
+  else
+    funTest2();
+  FILE *fp = fopen(argv[1], "w");
+  fwrite("12345", 5, 1, fp);
+  fclose(fp);
+  return 0;
+}