luc14n0/glib
1
0
Fork 0
mirror of https://gitlab.gnome.org/GNOME/glib.git synced 2025-01-27 14:36:16 +01:00
Code Issues Packages Projects Releases Wiki Activity

added g_strlcat() and g_strlcpy() wrappers, supplied by David Wheeler

Browse Source 
Wed Jul 26 05:47:48 2000  Tim Janik  <timj@gtk.org>

        * configure.in:
        * testglib.c:
        * gstrfuncs.c:
        * glib.h: added g_strlcat() and g_strlcpy() wrappers, supplied by
        David Wheeler <dwheeler@ida.org>:

        * glib.h, gstrfuncs.c: added g_strlcpy and g_strlcat to support
          safe manipulation of fixed-length string buffers.
          These functions were originally developed by Todd Miller to simplify
          development of security-related programs, and
          are available on many (but not all) Unix-like systems,
          including OpenBSD, FreeBSD, and Solaris.  See
          ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
          and http://www.openbsd.org/security.html.
          If there's a strlcpy/strlcat on the system, it's called, otherwise
          an implementation is provided.

        * testglib.c: Added tests for g_strlcpy, g_strlcat.
This commit is contained in:
Tim Janik 2000-07-26 03:51:07 +00:00 committed by Tim Janik
parent cb2f078051
commit 83e49bd036
16 changed files with 576 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
ChangeLog
View File

@ -1,3 +1,24 @@
Wed Jul 26 05:47:48 2000 Tim Janik <timj@gtk.org>
* configure.in:
* testglib.c:
* gstrfuncs.c:
* glib.h: added g_strlcat() and g_strlcpy() wrappers, supplied by
David Wheeler <dwheeler@ida.org>:
* glib.h, gstrfuncs.c: added g_strlcpy and g_strlcat to support
safe manipulation of fixed-length string buffers.
These functions were originally developed by Todd Miller to simplify
development of security-related programs, and
are available on many (but not all) Unix-like systems,
including OpenBSD, FreeBSD, and Solaris. See
ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
and http://www.openbsd.org/security.html.
If there's a strlcpy/strlcat on the system, it's called, otherwise
an implementation is provided.
* testglib.c: Added tests for g_strlcpy, g_strlcat.
Wed Jul 26 05:03:24 2000 Tim Janik <timj@gtk.org>
* acglib.m4 (GLIB_SIZEOF): include <stdlib.h> and <stddef.h> if

21
ChangeLog.pre-2-0
View File

@ -1,3 +1,24 @@
Wed Jul 26 05:47:48 2000 Tim Janik <timj@gtk.org>
* configure.in:
* testglib.c:
* gstrfuncs.c:
* glib.h: added g_strlcat() and g_strlcpy() wrappers, supplied by
David Wheeler <dwheeler@ida.org>:
* glib.h, gstrfuncs.c: added g_strlcpy and g_strlcat to support
safe manipulation of fixed-length string buffers.
These functions were originally developed by Todd Miller to simplify
development of security-related programs, and
are available on many (but not all) Unix-like systems,
including OpenBSD, FreeBSD, and Solaris. See
ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
and http://www.openbsd.org/security.html.
If there's a strlcpy/strlcat on the system, it's called, otherwise
an implementation is provided.
* testglib.c: Added tests for g_strlcpy, g_strlcat.
Wed Jul 26 05:03:24 2000 Tim Janik <timj@gtk.org>
* acglib.m4 (GLIB_SIZEOF): include <stdlib.h> and <stddef.h> if

21
ChangeLog.pre-2-10
View File

@ -1,3 +1,24 @@
Wed Jul 26 05:47:48 2000 Tim Janik <timj@gtk.org>
* configure.in:
* testglib.c:
* gstrfuncs.c:
* glib.h: added g_strlcat() and g_strlcpy() wrappers, supplied by
David Wheeler <dwheeler@ida.org>:
* glib.h, gstrfuncs.c: added g_strlcpy and g_strlcat to support
safe manipulation of fixed-length string buffers.
These functions were originally developed by Todd Miller to simplify
development of security-related programs, and
are available on many (but not all) Unix-like systems,
including OpenBSD, FreeBSD, and Solaris. See
ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
and http://www.openbsd.org/security.html.
If there's a strlcpy/strlcat on the system, it's called, otherwise
an implementation is provided.
* testglib.c: Added tests for g_strlcpy, g_strlcat.
Wed Jul 26 05:03:24 2000 Tim Janik <timj@gtk.org>
* acglib.m4 (GLIB_SIZEOF): include <stdlib.h> and <stddef.h> if

21
ChangeLog.pre-2-12
View File

@ -1,3 +1,24 @@
Wed Jul 26 05:47:48 2000 Tim Janik <timj@gtk.org>
* configure.in:
* testglib.c:
* gstrfuncs.c:
* glib.h: added g_strlcat() and g_strlcpy() wrappers, supplied by
David Wheeler <dwheeler@ida.org>:
* glib.h, gstrfuncs.c: added g_strlcpy and g_strlcat to support
safe manipulation of fixed-length string buffers.
These functions were originally developed by Todd Miller to simplify
development of security-related programs, and
are available on many (but not all) Unix-like systems,
including OpenBSD, FreeBSD, and Solaris. See
ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
and http://www.openbsd.org/security.html.
If there's a strlcpy/strlcat on the system, it's called, otherwise
an implementation is provided.
* testglib.c: Added tests for g_strlcpy, g_strlcat.
Wed Jul 26 05:03:24 2000 Tim Janik <timj@gtk.org>
* acglib.m4 (GLIB_SIZEOF): include <stdlib.h> and <stddef.h> if

21
ChangeLog.pre-2-2
View File

@ -1,3 +1,24 @@
Wed Jul 26 05:47:48 2000 Tim Janik <timj@gtk.org>
* configure.in:
* testglib.c:
* gstrfuncs.c:
* glib.h: added g_strlcat() and g_strlcpy() wrappers, supplied by
David Wheeler <dwheeler@ida.org>:
* glib.h, gstrfuncs.c: added g_strlcpy and g_strlcat to support
safe manipulation of fixed-length string buffers.
These functions were originally developed by Todd Miller to simplify
development of security-related programs, and
are available on many (but not all) Unix-like systems,
including OpenBSD, FreeBSD, and Solaris. See
ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
and http://www.openbsd.org/security.html.
If there's a strlcpy/strlcat on the system, it's called, otherwise
an implementation is provided.
* testglib.c: Added tests for g_strlcpy, g_strlcat.
Wed Jul 26 05:03:24 2000 Tim Janik <timj@gtk.org>
* acglib.m4 (GLIB_SIZEOF): include <stdlib.h> and <stddef.h> if

21
ChangeLog.pre-2-4
View File

@ -1,3 +1,24 @@
Wed Jul 26 05:47:48 2000 Tim Janik <timj@gtk.org>
* configure.in:
* testglib.c:
* gstrfuncs.c:
* glib.h: added g_strlcat() and g_strlcpy() wrappers, supplied by
David Wheeler <dwheeler@ida.org>:
* glib.h, gstrfuncs.c: added g_strlcpy and g_strlcat to support
safe manipulation of fixed-length string buffers.
These functions were originally developed by Todd Miller to simplify
development of security-related programs, and
are available on many (but not all) Unix-like systems,
including OpenBSD, FreeBSD, and Solaris. See
ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
and http://www.openbsd.org/security.html.
If there's a strlcpy/strlcat on the system, it's called, otherwise
an implementation is provided.
* testglib.c: Added tests for g_strlcpy, g_strlcat.
Wed Jul 26 05:03:24 2000 Tim Janik <timj@gtk.org>
* acglib.m4 (GLIB_SIZEOF): include <stdlib.h> and <stddef.h> if

21
ChangeLog.pre-2-6
View File

@ -1,3 +1,24 @@
Wed Jul 26 05:47:48 2000 Tim Janik <timj@gtk.org>
* configure.in:
* testglib.c:
* gstrfuncs.c:
* glib.h: added g_strlcat() and g_strlcpy() wrappers, supplied by
David Wheeler <dwheeler@ida.org>:
* glib.h, gstrfuncs.c: added g_strlcpy and g_strlcat to support
safe manipulation of fixed-length string buffers.
These functions were originally developed by Todd Miller to simplify
development of security-related programs, and
are available on many (but not all) Unix-like systems,
including OpenBSD, FreeBSD, and Solaris. See
ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
and http://www.openbsd.org/security.html.
If there's a strlcpy/strlcat on the system, it's called, otherwise
an implementation is provided.
* testglib.c: Added tests for g_strlcpy, g_strlcat.
Wed Jul 26 05:03:24 2000 Tim Janik <timj@gtk.org>
* acglib.m4 (GLIB_SIZEOF): include <stdlib.h> and <stddef.h> if

21
ChangeLog.pre-2-8
View File

@ -1,3 +1,24 @@
Wed Jul 26 05:47:48 2000 Tim Janik <timj@gtk.org>
* configure.in:
* testglib.c:
* gstrfuncs.c:
* glib.h: added g_strlcat() and g_strlcpy() wrappers, supplied by
David Wheeler <dwheeler@ida.org>:
* glib.h, gstrfuncs.c: added g_strlcpy and g_strlcat to support
safe manipulation of fixed-length string buffers.
These functions were originally developed by Todd Miller to simplify
development of security-related programs, and
are available on many (but not all) Unix-like systems,
including OpenBSD, FreeBSD, and Solaris. See
ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
and http://www.openbsd.org/security.html.
If there's a strlcpy/strlcat on the system, it's called, otherwise
an implementation is provided.
* testglib.c: Added tests for g_strlcpy, g_strlcat.
Wed Jul 26 05:03:24 2000 Tim Janik <timj@gtk.org>
* acglib.m4 (GLIB_SIZEOF): include <stdlib.h> and <stddef.h> if

1
acconfig.h
View File

@ -65,6 +65,7 @@
#undef HAVE_PTHREAD_ATTR_SETSTACKSIZE
#undef HAVE_PWD_H
#undef HAVE_PW_GECOS
#undef HAVE_STRLCPY
#undef HAVE_SYS_PARAM_H
#undef HAVE_SYS_POLL_H
#undef HAVE_SYS_SELECT_H

18
configure.in
View File

@ -456,10 +456,26 @@ AC_TRY_COMPILE([#include <langinfo.h>],
AC_DEFINE(HAVE_CODESET)
have_codeset=yes,
have_codeset=no)
AC_MSG_RESULT($have_codeset)
dnl ****************************************
dnl *** strlcpy/strlcat ***
dnl ****************************************
# Check for strlcpy
AC_MSG_CHECKING(for strlcpy/strlcat)
AC_TRY_LINK([#include <stdlib.h>
#include <string.h>], [
char *p = malloc(10);
(void) strlcpy(p, "hi", 10);
(void) strlcat(p, "bye", 10);
], glib_ok=yes, glib_ok=no)
AC_MSG_RESULT($glib_ok)
if test $glib_ok = yes; then
AC_DEFINE(HAVE_STRLCPY)
fi
dnl **********************
dnl *** va_copy checks ***
dnl **********************

6
glib.h
View File

@ -1654,6 +1654,12 @@ gint g_strncasecmp (const gchar *s1,
gchar* g_strdown (gchar *string);
gchar* g_strup (gchar *string);
gchar* g_strreverse (gchar *string);
gsize g_strlcpy (gchar *dest,
const gchar *src,
gsize dest_size);
gsize g_strlcat (gchar *dest,
const gchar *src,
gsize dest_size);
/* removes leading spaces */
gchar* g_strchug (gchar *string);
/* removes trailing spaces */

6
glib/glib.h
View File

@ -1654,6 +1654,12 @@ gint g_strncasecmp (const gchar *s1,
gchar* g_strdown (gchar *string);
gchar* g_strup (gchar *string);
gchar* g_strreverse (gchar *string);
gsize g_strlcpy (gchar *dest,
const gchar *src,
gsize dest_size);
gsize g_strlcat (gchar *dest,
const gchar *src,
gsize dest_size);
/* removes leading spaces */
gchar* g_strchug (gchar *string);
/* removes trailing spaces */

125
glib/gstrfuncs.c
View File

@ -801,6 +801,131 @@ extern const char * strsignal(int);
return msg;
}
/* Functions g_strlcpy and g_strlcat were originally developed by
* Todd C. Miller <Todd.Miller@courtesan.com> to simplify writing secure code.
* See ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
* for more information.
*/
#ifdef HAVE_STRLCPY
/* Use the native ones, if available; they might be implemented in assembly */
gsize
g_strlcpy (gchar *dest,
const gchar *src,
gsize dest_size)
{
g_return_val_if_fail (dest != NULL, NULL);
g_return_val_if_fail (src != NULL, NULL);
return strlcpy (dest, src, dest_size);
}
gsize
g_strlcat (gchar *dest,
const gchar *src,
gsize dest_size)
{
g_return_val_if_fail (dest != NULL, NULL);
g_return_val_if_fail (src != NULL, NULL);
return strlcat (dest, src, dest_size);
}
#else /* ! HAVE_STRLCPY */
/* g_strlcpy
*
* Copy string src to buffer dest (of buffer size dest_size). At most
* dest_size-1 characters will be copied. Always NUL terminates
* (unless dest_size == 0). This function does NOT allocate memory.
* Unlike strncpy, this function doesn't pad dest (so it's often faster).
* Returns size of attempted result, strlen(src),
* so if retval >= dest_size, truncation occurred.
*/
gsize
g_strlcpy (gchar *dest,
const gchar *src,
gsize dest_size)
{
register gchar *d = dest;
register const gchar *s = src;
register gsize n = dest_size;
g_return_val_if_fail (dest != NULL, NULL);
g_return_val_if_fail (src != NULL, NULL);
/* Copy as many bytes as will fit */
if (n != 0 && --n != 0)
do
{
register gchar c = *s++;
*d++ = c;
if (c == 0)
break;
}
while (--n != 0);
/* If not enough room in dest, add NUL and traverse rest of src */
if (n == 0)
{
if (dest_size != 0)
*d = 0;
while (*s++)
;
}
return s - src - 1; /* count does not include NUL */
}
/* g_strlcat
*
* Appends string src to buffer dest (of buffer size dest_size).
* At most dest_size-1 characters will be copied.
* Unlike strncat, dest_size is the full size of dest, not the space left over.
* This function does NOT allocate memory.
* This always NUL terminates (unless siz == 0 or there were no NUL characters
* in the dest_size characters of dest to start with).
* Returns size of attempted result, which is
* MIN (dest_size, strlen (original dest)) + strlen (src),
* so if retval >= dest_size, truncation occurred.
*/
gsize
g_strlcat (gchar *dest,
const gchar *src,
gsize dest_size)
{
register gchar *d = dest;
register const gchar *s = src;
register gsize bytes_left = dest_size;
gsize dlength; /* Logically, MIN (strlen (d), dest_size) */
g_return_val_if_fail (dest != NULL, NULL);
g_return_val_if_fail (src != NULL, NULL);
/* Find the end of dst and adjust bytes left but don't go past end */
while (*d != 0 && bytes_left-- != 0)
d++;
dlength = d - dest;
bytes_left = dest_size - dlength;
if (bytes_left == 0)
return dlength + strlen (s);
while (*s != 0)
{
if (bytes_left != 1)
{
*d++ = *s;
bytes_left--;
}
s++;
}
*d = 0;
return dlength + (s - src); /* count does not include NUL */
}
#endif /* ! HAVE_STRLCPY */
gchar*
g_strdown (gchar *string)
{

125
gstrfuncs.c
View File

@ -801,6 +801,131 @@ extern const char * strsignal(int);
return msg;
}
/* Functions g_strlcpy and g_strlcat were originally developed by
* Todd C. Miller <Todd.Miller@courtesan.com> to simplify writing secure code.
* See ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
* for more information.
*/
#ifdef HAVE_STRLCPY
/* Use the native ones, if available; they might be implemented in assembly */
gsize
g_strlcpy (gchar *dest,
const gchar *src,
gsize dest_size)
{
g_return_val_if_fail (dest != NULL, NULL);
g_return_val_if_fail (src != NULL, NULL);
return strlcpy (dest, src, dest_size);
}
gsize
g_strlcat (gchar *dest,
const gchar *src,
gsize dest_size)
{
g_return_val_if_fail (dest != NULL, NULL);
g_return_val_if_fail (src != NULL, NULL);
return strlcat (dest, src, dest_size);
}
#else /* ! HAVE_STRLCPY */
/* g_strlcpy
*
* Copy string src to buffer dest (of buffer size dest_size). At most
* dest_size-1 characters will be copied. Always NUL terminates
* (unless dest_size == 0). This function does NOT allocate memory.
* Unlike strncpy, this function doesn't pad dest (so it's often faster).
* Returns size of attempted result, strlen(src),
* so if retval >= dest_size, truncation occurred.
*/
gsize
g_strlcpy (gchar *dest,
const gchar *src,
gsize dest_size)
{
register gchar *d = dest;
register const gchar *s = src;
register gsize n = dest_size;
g_return_val_if_fail (dest != NULL, NULL);
g_return_val_if_fail (src != NULL, NULL);
/* Copy as many bytes as will fit */
if (n != 0 && --n != 0)
do
{
register gchar c = *s++;
*d++ = c;
if (c == 0)
break;
}
while (--n != 0);
/* If not enough room in dest, add NUL and traverse rest of src */
if (n == 0)
{
if (dest_size != 0)
*d = 0;
while (*s++)
;
}
return s - src - 1; /* count does not include NUL */
}
/* g_strlcat
*
* Appends string src to buffer dest (of buffer size dest_size).
* At most dest_size-1 characters will be copied.
* Unlike strncat, dest_size is the full size of dest, not the space left over.
* This function does NOT allocate memory.
* This always NUL terminates (unless siz == 0 or there were no NUL characters
* in the dest_size characters of dest to start with).
* Returns size of attempted result, which is
* MIN (dest_size, strlen (original dest)) + strlen (src),
* so if retval >= dest_size, truncation occurred.
*/
gsize
g_strlcat (gchar *dest,
const gchar *src,
gsize dest_size)
{
register gchar *d = dest;
register const gchar *s = src;
register gsize bytes_left = dest_size;
gsize dlength; /* Logically, MIN (strlen (d), dest_size) */
g_return_val_if_fail (dest != NULL, NULL);
g_return_val_if_fail (src != NULL, NULL);
/* Find the end of dst and adjust bytes left but don't go past end */
while (*d != 0 && bytes_left-- != 0)
d++;
dlength = d - dest;
bytes_left = dest_size - dlength;
if (bytes_left == 0)
return dlength + strlen (s);
while (*s != 0)
{
if (bytes_left != 1)
{
*d++ = *s;
bytes_left--;
}
s++;
}
*d = 0;
return dlength + (s - src); /* count does not include NUL */
}
#endif /* ! HAVE_STRLCPY */
gchar*
g_strdown (gchar *string)
{

58
testglib.c
View File

@ -372,6 +372,7 @@ main (int argc,
TEST (NULL, sizeof (gint16) == 2);
g_print ("\nchecking size of gint32: %d", (int)sizeof (gint32));
TEST (NULL, sizeof (gint32) == 4);
g_print ("\nchecking size of gsize: %d", (int)sizeof (gsize));
#ifdef G_HAVE_GINT64
g_print ("\nchecking size of gint64: %d", (int)sizeof (gint64));
TEST (NULL, sizeof (gint64) == 8);
@ -879,9 +880,66 @@ main (int argc,
g_assert(strcmp(string, GLIB_TEST_STRING GLIB_TEST_STRING
GLIB_TEST_STRING) == 0);
g_free(string);
g_print ("ok\n");
g_print("checking g_strlcpy/g_strlcat...");
/* The following is a torture test for strlcpy/strlcat, with lots of
* checking; normal users wouldn't use them this way!
*/
string = g_malloc (6);
*(string + 5) = 'Z'; /* guard value, shouldn't change during test */
*string = 'q';
g_assert (g_strlcpy(string, "" , 5) == 0);
g_assert ( *string == '\0' );
*string = 'q';
g_assert (g_strlcpy(string, "abc" , 5) == 3);
g_assert ( *(string + 3) == '\0' );
g_assert (g_str_equal(string, "abc"));
g_assert (g_strlcpy(string, "abcd" , 5) == 4);
g_assert ( *(string + 4) == '\0' );
g_assert ( *(string + 5) == 'Z' );
g_assert (g_str_equal(string, "abcd"));
g_assert (g_strlcpy(string, "abcde" , 5) == 5);
g_assert ( *(string + 4) == '\0' );
g_assert ( *(string + 5) == 'Z' );
g_assert (g_str_equal(string, "abcd"));
g_assert (g_strlcpy(string, "abcdef" , 5) == 6);
g_assert ( *(string + 4) == '\0' );
g_assert ( *(string + 5) == 'Z' );
g_assert (g_str_equal(string, "abcd"));
*string = 'Y';
*(string + 1)= '\0';
g_assert (g_strlcpy(string, "Hello" , 0) == 5);
g_assert (*string == 'Y');
*string = '\0';
g_assert (g_strlcat(string, "123" , 5) == 3);
g_assert ( *(string + 3) == '\0' );
g_assert (g_str_equal(string, "123"));
g_assert (g_strlcat(string, "" , 5) == 3);
g_assert ( *(string + 3) == '\0' );
g_assert (g_str_equal(string, "123"));
g_assert (g_strlcat(string, "4", 5) == 4);
g_assert (g_str_equal(string, "1234"));
g_assert (g_strlcat(string, "5", 5) == 5);
g_assert ( *(string + 4) == '\0' );
g_assert (g_str_equal(string, "1234"));
g_assert ( *(string + 5) == 'Z' );
*string = 'Y';
*(string + 1)= '\0';
g_assert (g_strlcat(string, "123" , 0) == 3);
g_assert (*string == 'Y');
/* A few more tests, demonstrating more "normal" use */
g_assert (g_strlcpy(string, "hi", 5) == 2);
g_assert (g_str_equal(string, "hi"));
g_assert (g_strlcat(string, "t", 5) == 3);
g_assert (g_str_equal(string, "hit"));
g_free(string);
g_print ("ok\n");
g_print ("checking g_strdup_printf...");
string = g_strdup_printf ("%05d %-5s", 21, "test");
g_assert (string != NULL);

58
tests/testglib.c
View File

@ -372,6 +372,7 @@ main (int argc,
TEST (NULL, sizeof (gint16) == 2);
g_print ("\nchecking size of gint32: %d", (int)sizeof (gint32));
TEST (NULL, sizeof (gint32) == 4);
g_print ("\nchecking size of gsize: %d", (int)sizeof (gsize));
#ifdef G_HAVE_GINT64
g_print ("\nchecking size of gint64: %d", (int)sizeof (gint64));
TEST (NULL, sizeof (gint64) == 8);
@ -879,9 +880,66 @@ main (int argc,
g_assert(strcmp(string, GLIB_TEST_STRING GLIB_TEST_STRING
GLIB_TEST_STRING) == 0);
g_free(string);
g_print ("ok\n");
g_print("checking g_strlcpy/g_strlcat...");
/* The following is a torture test for strlcpy/strlcat, with lots of
* checking; normal users wouldn't use them this way!
*/
string = g_malloc (6);
*(string + 5) = 'Z'; /* guard value, shouldn't change during test */
*string = 'q';
g_assert (g_strlcpy(string, "" , 5) == 0);
g_assert ( *string == '\0' );
*string = 'q';
g_assert (g_strlcpy(string, "abc" , 5) == 3);
g_assert ( *(string + 3) == '\0' );
g_assert (g_str_equal(string, "abc"));
g_assert (g_strlcpy(string, "abcd" , 5) == 4);
g_assert ( *(string + 4) == '\0' );
g_assert ( *(string + 5) == 'Z' );
g_assert (g_str_equal(string, "abcd"));
g_assert (g_strlcpy(string, "abcde" , 5) == 5);
g_assert ( *(string + 4) == '\0' );
g_assert ( *(string + 5) == 'Z' );
g_assert (g_str_equal(string, "abcd"));
g_assert (g_strlcpy(string, "abcdef" , 5) == 6);
g_assert ( *(string + 4) == '\0' );
g_assert ( *(string + 5) == 'Z' );
g_assert (g_str_equal(string, "abcd"));
*string = 'Y';
*(string + 1)= '\0';
g_assert (g_strlcpy(string, "Hello" , 0) == 5);
g_assert (*string == 'Y');
*string = '\0';
g_assert (g_strlcat(string, "123" , 5) == 3);
g_assert ( *(string + 3) == '\0' );
g_assert (g_str_equal(string, "123"));
g_assert (g_strlcat(string, "" , 5) == 3);
g_assert ( *(string + 3) == '\0' );
g_assert (g_str_equal(string, "123"));
g_assert (g_strlcat(string, "4", 5) == 4);
g_assert (g_str_equal(string, "1234"));
g_assert (g_strlcat(string, "5", 5) == 5);
g_assert ( *(string + 4) == '\0' );
g_assert (g_str_equal(string, "1234"));
g_assert ( *(string + 5) == 'Z' );
*string = 'Y';
*(string + 1)= '\0';
g_assert (g_strlcat(string, "123" , 0) == 3);
g_assert (*string == 'Y');
/* A few more tests, demonstrating more "normal" use */
g_assert (g_strlcpy(string, "hi", 5) == 2);
g_assert (g_str_equal(string, "hi"));
g_assert (g_strlcat(string, "t", 5) == 3);
g_assert (g_str_equal(string, "hit"));
g_free(string);
g_print ("ok\n");
g_print ("checking g_strdup_printf...");
string = g_strdup_printf ("%05d %-5s", 21, "test");
g_assert (string != NULL);