gcc/testsuite/gcc.dg/analyzer/sensitive-1.c

#include <stdio.h>
#include <unistd.h>
#include <string.h>

char test_1 (FILE *logfile)
{
  char *password = getpass (">"); /* { dg-message "\\(1\\) sensitive value acquired here" } */
  fprintf (logfile, "got password %s\n", password); /* { dg-warning "sensitive value 'password' written to output file \\\[CWE-532\\\]" } */
  /* { dg-message "\\(2\\) sensitive value 'password' written to output file; acquired at \\(1\\)" "" { target *-*-* } .-1 } */
}

char test_2 (FILE *logfile, int i)
{
  char *password = getpass (">"); /* { dg-message "\\(1\\) sensitive value acquired here" } */
  fprintf (logfile, "got password[%i]: %s\n", i, password); /* { dg-warning "sensitive value 'password' written to output file \\\[CWE-532\\\]" } */
  /* { dg-message "\\(2\\) sensitive value 'password' written to output file; acquired at \\(1\\)" "" { target *-*-* } .-1 } */
}

char test_3 (FILE *logfile)
{
  char *password = getpass (">"); /* { dg-message "\\(1\\) sensitive value acquired here" } */
  printf ("got password %s\n", password); /* { dg-warning "sensitive value 'password' written to output file \\\[CWE-532\\\]" } */
  /* { dg-message "\\(2\\) sensitive value 'password' written to output file; acquired at \\(1\\)" "" { target *-*-* } .-1 } */
}

char test_4 (FILE *logfile)
{
  char *password = getpass (">"); /* { dg-message "\\(1\\) sensitive value acquired here" } */
  fwrite (password, strlen (password), 1, logfile); /* { dg-warning "sensitive value 'password' written to output file \\\[CWE-532\\\]" } */
  /* { dg-message "\\(2\\) sensitive value 'password' written to output file; acquired at \\(1\\)" "" { target *-*-* } .-1 } */
}

static void called_by_test_5 (const char *value)
{
  printf ("%s", value); /* { dg-warning "sensitive value 'value' written to output file \\\[CWE-532\\\]" } */
}

char test_5 (FILE *logfile)
{
  char *password = getpass (">");
  called_by_test_5 (password); /* { dg-message "passing sensitive value 'password' in call to 'called_by_test_5' from 'test_5'" } */
}

static char *called_by_test_6 (void)
{
  return getpass (">"); /* { dg-message "sensitive value acquired here" } */
}

char test_6 (FILE *logfile)
{
  char *password = called_by_test_6 (); /* { dg-message "returning sensitive value to 'test_6' from 'called_by_test_6'" } */
  printf ("%s", password); /* { dg-warning "sensitive value 'password' written to output file \\\[CWE-532\\\]" } */
}

/* TODO: strdup etc, strcpy, memcpy, etc.  */