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/* tsexp.c - S-expression regression tests
* Copyright (C) 2001, 2002, 2003, 2005 Free Software Foundation, Inc.
*
* This file is part of Libgcrypt.
*
* Libgcrypt is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* Libgcrypt is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include "../src/gcrypt.h"
#define PGMNAME "tsexp"
static int verbose;
static int error_count;
static void
info (const char *format, ...)
{
va_list arg_ptr;
if (verbose)
{
va_start( arg_ptr, format ) ;
vfprintf (stderr, format, arg_ptr );
va_end(arg_ptr);
}
}
static void
fail ( const char *format, ... )
{
va_list arg_ptr ;
fputs (PGMNAME ": ", stderr);
va_start( arg_ptr, format ) ;
vfprintf (stderr, format, arg_ptr );
va_end(arg_ptr);
error_count++;
}
/* fixme: we need better tests */
static void
basic (void)
{
int pass;
gcry_sexp_t sexp;
int idx;
char *secure_buffer;
size_t secure_buffer_len;
const char *string;
static struct {
const char *token;
const char *parm;
} values[] = {
{ "public-key", NULL },
{ "dsa", NULL },
{ "dsa", "p" },
{ "dsa", "y" },
{ "dsa", "q" },
{ "dsa", "g" },
{ NULL }
};
info ("doing some pretty pointless tests\n");
secure_buffer_len = 99;
secure_buffer = gcry_xmalloc_secure (secure_buffer_len);
memset (secure_buffer, 'G', secure_buffer_len);
for (pass=0;;pass++)
{
switch (pass)
{
case 0:
string = ("(public-key (dsa (p #41424344#) (y this_is_y) "
"(q #61626364656667#) (g %m)))");
if ( gcry_sexp_build (&sexp, NULL, string,
gcry_mpi_set_ui (NULL, 42)) )
{
fail (" scanning `%s' failed\n", string);
return;
}
break;
case 1:
string = ("(public-key (dsa (p #41424344#) (y this_is_y) "
"(q %b) (g %m)))");
if ( gcry_sexp_build (&sexp, NULL, string,
15, "foo\0\x01\0x02789012345",
gcry_mpi_set_ui (NULL, 42)) )
{
fail (" scanning `%s' failed\n", string);
return;
}
break;
case 2:
string = ("(public-key (dsa (p #41424344#) (y silly_y_value) "
"(q %b) (g %m)))");
if ( gcry_sexp_build (&sexp, NULL, string,
secure_buffer_len, secure_buffer,
gcry_mpi_set_ui (NULL, 17)) )
{
fail (" scanning `%s' failed\n", string);
return;
}
if (!gcry_is_secure (sexp))
fail ("gcry_sexp_build did not switch to secure memory\n");
break;
case 3:
{
gcry_sexp_t help_sexp;
if (gcry_sexp_new (&help_sexp,
"(foobar-parms (xp #1234#)(xq #03#))", 0, 1))
{
fail (" scanning fixed string failed\n");
return;
}
string = ("(public-key (dsa (p #41424344#) (parm %S) "
"(y dummy)(q %b) (g %m)))");
if ( gcry_sexp_build (&sexp, NULL, string, help_sexp,
secure_buffer_len, secure_buffer,
gcry_mpi_set_ui (NULL, 17)) )
{
fail (" scanning `%s' failed\n", string);
return;
}
gcry_sexp_release (help_sexp);
}
break;
default:
return; /* Ready. */
}
/* now find something */
for (idx=0; values[idx].token; idx++)
{
const char *token = values[idx].token;
const char *parm = values[idx].parm;
gcry_sexp_t s1, s2;
gcry_mpi_t a;
const char *p;
size_t n;
s1 = gcry_sexp_find_token (sexp, token, strlen(token) );
if (!s1)
{
fail ("didn't found `%s'\n", token);
continue;
}
p = gcry_sexp_nth_data (s1, 0, &n);
if (!p)
{
fail ("no car for `%s'\n", token);
continue;
}
info ("car=`%.*s'\n", (int)n, p);
s2 = gcry_sexp_cdr (s1);
if (!s2)
{
fail ("no cdr for `%s'\n", token);
continue;
}
p = gcry_sexp_nth_data (s2, 0, &n);
if (p)
{
fail ("data at car of `%s'\n", token);
continue;
}
if (parm)
{
s2 = gcry_sexp_find_token (s1, parm, strlen (parm));
if (!s2)
{
fail ("didn't found `%s'\n", parm);
continue;
}
p = gcry_sexp_nth_data (s2, 0, &n);
if (!p)
{
fail("no car for `%s'\n", parm );
continue;
}
info ("car=`%.*s'\n", (int)n, p);
p = gcry_sexp_nth_data (s2, 1, &n);
if (!p)
{
fail("no cdr for `%s'\n", parm );
continue;
}
info ("cdr=`%.*s'\n", (int)n, p);
a = gcry_sexp_nth_mpi (s2, 0, GCRYMPI_FMT_USG);
if (!a)
{
fail("failed to cdr the mpi for `%s'\n", parm);
continue;
}
}
}
gcry_sexp_release (sexp);
sexp = NULL;
}
gcry_free (secure_buffer);
}
static void
canon_len (void)
{
static struct {
size_t textlen; /* length of the buffer */
size_t expected;/* expected length or 0 on error and then ... */
size_t erroff; /* ... and at this offset */
gcry_error_t errcode; /* ... with this error code */
const char *text;
} values[] = {
{ 14, 13, 0, GPG_ERR_NO_ERROR, "(9:abcdefghi) " },
{ 16, 15, 0, GPG_ERR_NO_ERROR, "(10:abcdefghix)" },
{ 14, 0,14, GPG_ERR_SEXP_STRING_TOO_LONG, "(10:abcdefghi)" },
{ 15, 0, 1, GPG_ERR_SEXP_ZERO_PREFIX, "(010:abcdefghi)" },
{ 2, 0, 0, GPG_ERR_SEXP_NOT_CANONICAL, "1:"},
{ 4, 0, 4, GPG_ERR_SEXP_STRING_TOO_LONG, "(1:)"},
{ 5, 5, 0, GPG_ERR_NO_ERROR, "(1:x)"},
{ 2, 2, 0, GPG_ERR_NO_ERROR, "()"},
{ 4, 2, 0, GPG_ERR_NO_ERROR, "()()"},
{ 4, 4, 0, GPG_ERR_NO_ERROR, "(())"},
{ 3, 0, 3, GPG_ERR_SEXP_STRING_TOO_LONG, "(()"},
{ 3, 0, 1, GPG_ERR_SEXP_BAD_CHARACTER, "( )"},
{ 9, 9, 0, GPG_ERR_NO_ERROR, "(3:abc())"},
{ 10, 0, 6, GPG_ERR_SEXP_BAD_CHARACTER, "(3:abc ())"},
/* fixme: we need much more cases */
{ 0 },
};
int idx;
gcry_error_t errcode;
size_t n, erroff;
info ("checking canoncial length test function\n");
for (idx=0; values[idx].text; idx++)
{
n = gcry_sexp_canon_len ((const unsigned char*)values[idx].text,
values[idx].textlen,
&erroff, &errcode);
if (n && n == values[idx].expected)
; /* success */
else if (!n && !values[idx].expected)
{ /* we expected an error - check that this is the right one */
if (values[idx].erroff != erroff)
fail ("canonical length test %d - wrong error offset %u\n",
idx, (unsigned int)erroff);
if (gcry_err_code (errcode) != values[idx].errcode)
fail ("canonical length test %d - wrong error code %d\n",
idx, errcode);
}
else
fail ("canonical length test %d failed - n=%u, off=%u, err=%d\n",
idx, (unsigned int)n, (unsigned int)erroff, errcode);
}
}
static void
back_and_forth_one (int testno, const char *buffer, size_t length)
{
gcry_error_t rc;
gcry_sexp_t se, se1;
size_t n, n1;
char *p1;
rc = gcry_sexp_new (&se, buffer, length, 1);
if (rc)
{
fail ("baf %d: gcry_sexp_new failed: %s\n", testno, gpg_strerror (rc));
return;
}
n1 = gcry_sexp_sprint (se, GCRYSEXP_FMT_CANON, NULL, 0);
if (!n1)
{
fail ("baf %d: get required length for canon failed\n", testno);
return;
}
p1 = gcry_xmalloc (n1);
n = gcry_sexp_sprint (se, GCRYSEXP_FMT_CANON, p1, n1);
if (n1 != n+1) /* sprints adds an extra 0 but dies not return it */
{
fail ("baf %d: length mismatch for canon\n", testno);
return;
}
rc = gcry_sexp_create (&se1, p1, n, 0, gcry_free);
if (rc)
{
fail ("baf %d: gcry_sexp_create failed: %s\n",
testno, gpg_strerror (rc));
return;
}
gcry_sexp_release (se1);
/* Again but with memory checking. */
p1 = gcry_xmalloc (n1+2);
*p1 = '\x55';
p1[n1+1] = '\xaa';
n = gcry_sexp_sprint (se, GCRYSEXP_FMT_CANON, p1+1, n1);
if (n1 != n+1) /* sprints adds an extra 0 but does not return it */
{
fail ("baf %d: length mismatch for canon\n", testno);
return;
}
if (*p1 != '\x55' || p1[n1+1] != '\xaa')
fail ("baf %d: memory corrupted (1)\n", testno);
rc = gcry_sexp_create (&se1, p1+1, n, 0, NULL);
if (rc)
{
fail ("baf %d: gcry_sexp_create failed: %s\n",
testno, gpg_strerror (rc));
return;
}
if (*p1 != '\x55' || p1[n1+1] != '\xaa')
fail ("baf %d: memory corrupted (2)\n", testno);
gcry_sexp_release (se1);
if (*p1 != '\x55' || p1[n1+1] != '\xaa')
fail ("baf %d: memory corrupted (3)\n", testno);
gcry_free (p1);
/* FIXME: we need a lot more tests */
gcry_sexp_release (se);
}
static void
back_and_forth (void)
{
static struct { const char *buf; int len; } tests[] = {
{ "(7:g34:fgh1::2:())", 0 },
{ "(7:g34:fgh1::2:())", 18 },
{
"(protected-private-key \n"
" (rsa \n"
" (n #00BE8A536204687149A48FF9F1715FF3530AD9A836D62102BF4065E5CF5953236DB94F1DF2FF4D525CD4CE7966DDC3C839968E8BAC2948934DF047CC65287CD79F6C23C93E55D7F9231E3942BD496DE383469977635A51ADF4AF747DB958CA02E9940DFC1DC0FC7FC755E7EB6618FEE6DA54B8A06E0CBF9D9257443F9992261435#)\n"
" (e #010001#)\n"
" (protected openpgp-s2k3-sha1-aes-cbc \n"
" (\n"
" (sha1 #C2A5673BD3882405# \"96\")\n"
" #8D08AAF6A9209ED69D71EB7E64D78715#)\n"
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n"
" )\n"
" )\n", 0 },
{ NULL, 0 }
};
int idx;
for (idx=0; tests[idx].buf; idx++)
back_and_forth_one (idx, tests[idx].buf, tests[idx].len);
}
static void
check_sscan (void)
{
static struct {
const char *text;
gcry_error_t expected_err;
} values[] = {
/* Bug reported by Olivier L'Heureux 2003-10-07 */
{ "(7:sig-val(3:dsa"
"(1:r20:\x7e\xff\xd5\xba\xc9\xc9\xa4\x9b\xd4\x26\x8b\x64"
"\x06\x7a\xcf\x42\x7b\x6c\x51\xfb)"
"(1:s21:\x01\x8c\x6c\x6f\x37\x1a\x8d\xfd\x5a\xb3\x2a\x3d"
"\xc5\xae\x23\xed\x32\x62\x30\x62\x3e)))",
GPG_ERR_NO_ERROR },
{ "(7:sig-val(3:dsa"
"(1:r20:\x7e\xff\xd5\xba\xc9\xc9\xa4\x9b\xd4\x26\x8b\x64"
"\x06\x7a\xcf\x42\x7b\x6c\x51\xfb)"
"(1:s21:\x01\x8c\x6c\x6f\x37\x1a\x8d\xfd\x5a\xb3\x2a\x3d"
"\xc5\xae\x23\xed\x32\x62\x30\x62\x3e))",
GPG_ERR_SEXP_UNMATCHED_PAREN },
{ "(7:sig-val(3:dsa"
"(1:r20:\x7e\xff\xd5\xba\xc9\xc9\xa4\x9b\xd4\x26\x8b\x64"
"\x06\x7a\xcf\x42\x7b\x6c\x51\xfb)"
"(1:s21:\x01\x8c\x6c\x6f\x37\x1a\x8d\xfd\x5a\xb3\x2a\x3d"
"\xc5\xae\x23\xed\x32\x62\x30\x62\x3e))))",
GPG_ERR_SEXP_UNMATCHED_PAREN },
{ NULL, 0 }
};
int idx;
gcry_error_t err;
gcry_sexp_t s;
info ("checking gcry_sexp_sscan\n");
for (idx=0; values[idx].text; idx++)
{
err = gcry_sexp_sscan (&s, NULL,
values[idx].text,
strlen (values[idx].text));
if (gpg_err_code (err) != values[idx].expected_err)
fail ("gcry_sexp_sscan test %d failed: %s\n", idx, gpg_strerror (err));
gcry_sexp_release (s);
}
}
int
main (int argc, char **argv)
{
if (argc > 1 && !strcmp (argv[1], "--verbose"))
verbose = 1;
gcry_control (GCRYCTL_DISABLE_SECMEM_WARN);
gcry_control (GCRYCTL_INIT_SECMEM, 16384, 0);
basic ();
canon_len ();
back_and_forth ();
check_sscan ();
return error_count? 1:0;
}

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