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Test libc strlcat() and strlcpy().

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On systems that have strlcat() and strlcpy() in libc, run the tests twice (once with our implementation and once with the system's) to verify that our tests are correct.
This commit is contained in:
Dag-Erling Smørgrav 2017-04-28 22:03:53 +02:00
parent d80dc09f3c
commit 882312950d
2 changed files with 58 additions and 10 deletions
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34
t/t_strlcat.c
View file

@ -35,11 +35,12 @@
#include <string.h>
#include <unistd.h>
#undef HAVE_STRLCAT
#include <cryb/strlcat.h>
#include <cryb/test.h>
typedef size_t (*strlcat_f)(char *, const char *, size_t);
#define T_MAGIC_STR "squeamish ossifrage"
#define T_MAGIC_LEN (sizeof(T_MAGIC_STR) - 1)
#define T_BUFSIZE (T_MAGIC_LEN + 1 + T_MAGIC_LEN + 1)
@ -126,16 +127,15 @@ static struct t_case t_cases[] = {
* Test function
*/
static int
t_strlcat(char **desc CRYB_UNUSED, void *arg)
t_strlcat(strlcat_f func, const struct t_case *t)
{
struct t_case *t = arg;
char buf[T_BUFSIZE + 1];
size_t sz;
int ret;
memcpy(buf, t->buf, sizeof t->buf);
buf[T_BUFSIZE] = T_CANARY;
sz = strlcat(buf, t->in, T_BUFSIZE);
sz = func(buf, t->in, T_BUFSIZE);
if (buf[T_BUFSIZE] != T_CANARY) {
t_printv("buffer overflow\n");
return (0);
@ -146,6 +146,24 @@ t_strlcat(char **desc CRYB_UNUSED, void *arg)
return (ret);
}
static int
t_cryb_strlcat(char **desc CRYB_UNUSED, void *arg)
{
const struct t_case *t = arg;
return (t_strlcat(cryb_strlcat, t));
}
#if HAVE_STRLCAT
static int
t_libc_strlcat(char **desc CRYB_UNUSED, void *arg)
{
const struct t_case *t = arg;
return (t_strlcat(strlcat, t));
}
#endif
/***************************************************************************
* Boilerplate
@ -160,7 +178,13 @@ t_prepare(int argc, char *argv[])
(void)argv;
n = sizeof t_cases / sizeof t_cases[0];
for (i = 0; i < n; ++i)
t_add_test(t_strlcat, &t_cases[i], "%s", t_cases[i].desc);
t_add_test(t_cryb_strlcat, &t_cases[i],
"%s (cryb)", t_cases[i].desc);
#if HAVE_STRLCAT
for (i = 0; i < n; ++i)
t_add_test(t_libc_strlcat, &t_cases[i],
"%s (libc)", t_cases[i].desc);
#endif
return (0);
}

34
t/t_strlcpy.c
View file

@ -35,11 +35,12 @@
#include <string.h>
#include <unistd.h>
#undef HAVE_STRLCPY
#include <cryb/strlcpy.h>
#include <cryb/test.h>
typedef size_t (*strlcpy_f)(char *, const char *, size_t);
#define T_MAGIC_STR "squeamish ossifrage"
#define T_MAGIC_LEN (sizeof(T_MAGIC_STR) - 1)
#define T_BUFSIZE (T_MAGIC_LEN + 1 + T_MAGIC_LEN + 1)
@ -86,14 +87,13 @@ static struct t_case t_cases[] = {
* Test function
*/
static int
t_strlcpy(char **desc CRYB_UNUSED, void *arg)
t_strlcpy(strlcpy_f func, const struct t_case *t)
{
struct t_case *t = arg;
char buf[T_BUFSIZE + 1];
size_t sz;
memset(buf, T_CANARY, sizeof buf);
sz = strlcpy(buf, t->in, T_BUFSIZE);
sz = func(buf, t->in, T_BUFSIZE);
if (buf[T_BUFSIZE] != T_CANARY) {
t_printv("buffer overflow\n");
return (0);
@ -101,6 +101,24 @@ t_strlcpy(char **desc CRYB_UNUSED, void *arg)
return (t_compare_sz(t->sz, sz) & t_compare_str(t->out, buf));
}
static int
t_cryb_strlcpy(char **desc CRYB_UNUSED, void *arg)
{
const struct t_case *t = arg;
return (t_strlcpy(cryb_strlcpy, t));
}
#if HAVE_STRLCPY
static int
t_libc_strlcpy(char **desc CRYB_UNUSED, void *arg)
{
const struct t_case *t = arg;
return (t_strlcpy(strlcpy, t));
}
#endif
/***************************************************************************
* Boilerplate
@ -115,7 +133,13 @@ t_prepare(int argc, char *argv[])
(void)argv;
n = sizeof t_cases / sizeof t_cases[0];
for (i = 0; i < n; ++i)
t_add_test(t_strlcpy, &t_cases[i], "%s", t_cases[i].desc);
t_add_test(t_cryb_strlcpy, &t_cases[i],
"%s (cryb)", t_cases[i].desc);
#if HAVE_STRLCPY
for (i = 0; i < n; ++i)
t_add_test(t_libc_strlcpy, &t_cases[i],
"%s (libc)", t_cases[i].desc);
#endif
return (0);
}