1#line 1 "helpers.function"
2/*----------------------------------------------------------------------------*/
3/* Headers */
4
5#include <stdlib.h>
6
7#if defined(MBEDTLS_PLATFORM_C)
8#include "mbedtls/platform.h"
9#else
10#include <stdio.h>
11#define mbedtls_fprintf    fprintf
12#define mbedtls_snprintf   snprintf
13#define mbedtls_calloc     calloc
14#define mbedtls_free       free
15#define mbedtls_exit       exit
16#define mbedtls_time       time
17#define mbedtls_time_t     time_t
18#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
19#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
20#endif
21
22#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
23#include "mbedtls/memory_buffer_alloc.h"
24#endif
25
26#ifdef _MSC_VER
27#include <basetsd.h>
28typedef UINT32 uint32_t;
29#define strncasecmp _strnicmp
30#define strcasecmp _stricmp
31#else
32#include <stdint.h>
33#endif
34
35#include <string.h>
36
37#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
38#include <unistd.h>
39#endif
40
41/*----------------------------------------------------------------------------*/
42/* Constants */
43
44#define DEPENDENCY_SUPPORTED        0
45#define DEPENDENCY_NOT_SUPPORTED    1
46
47#define KEY_VALUE_MAPPING_FOUND     0
48#define KEY_VALUE_MAPPING_NOT_FOUND -1
49
50#define DISPATCH_TEST_SUCCESS       0
51#define DISPATCH_TEST_FN_NOT_FOUND  1
52#define DISPATCH_INVALID_TEST_DATA  2
53#define DISPATCH_UNSUPPORTED_SUITE  3
54
55
56/*----------------------------------------------------------------------------*/
57/* Macros */
58
59#define TEST_ASSERT( TEST )                         \
60    do {                                            \
61        if( ! (TEST) )                              \
62        {                                           \
63            test_fail( #TEST, __LINE__, __FILE__ ); \
64            goto exit;                              \
65        }                                           \
66    } while( 0 )
67
68#define assert(a) if( !( a ) )                                      \
69{                                                                   \
70    mbedtls_fprintf( stderr, "Assertion Failed at %s:%d - %s\n",   \
71                             __FILE__, __LINE__, #a );              \
72    mbedtls_exit( 1 );                                             \
73}
74
75/*
76 * 32-bit integer manipulation macros (big endian)
77 */
78#ifndef GET_UINT32_BE
79#define GET_UINT32_BE(n,b,i)                            \
80{                                                       \
81    (n) = ( (uint32_t) (b)[(i)    ] << 24 )             \
82        | ( (uint32_t) (b)[(i) + 1] << 16 )             \
83        | ( (uint32_t) (b)[(i) + 2] <<  8 )             \
84        | ( (uint32_t) (b)[(i) + 3]       );            \
85}
86#endif
87
88#ifndef PUT_UINT32_BE
89#define PUT_UINT32_BE(n,b,i)                            \
90{                                                       \
91    (b)[(i)    ] = (unsigned char) ( (n) >> 24 );       \
92    (b)[(i) + 1] = (unsigned char) ( (n) >> 16 );       \
93    (b)[(i) + 2] = (unsigned char) ( (n) >>  8 );       \
94    (b)[(i) + 3] = (unsigned char) ( (n)       );       \
95}
96#endif
97
98
99/*----------------------------------------------------------------------------*/
100/* Global variables */
101
102static int test_errors = 0;
103
104
105/*----------------------------------------------------------------------------*/
106/* Helper Functions */
107
108#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
109static int redirect_output( FILE** out_stream, const char* path )
110{
111    int stdout_fd = dup( fileno( *out_stream ) );
112
113    if( stdout_fd == -1 )
114    {
115        return -1;
116    }
117
118    fflush( *out_stream );
119    fclose( *out_stream );
120    *out_stream = fopen( path, "w" );
121
122    if( *out_stream == NULL )
123    {
124        return -1;
125    }
126
127    return stdout_fd;
128}
129
130static int restore_output( FILE** out_stream, int old_fd )
131{
132    fflush( *out_stream );
133    fclose( *out_stream );
134
135    *out_stream = fdopen( old_fd, "w" );
136    if( *out_stream == NULL )
137    {
138        return -1;
139    }
140
141    return 0;
142}
143
144static void close_output( FILE* out_stream )
145{
146    fclose( out_stream );
147}
148#endif /* __unix__ || __APPLE__ __MACH__ */
149
150static int unhexify( unsigned char *obuf, const char *ibuf )
151{
152    unsigned char c, c2;
153    int len = strlen( ibuf ) / 2;
154    assert( strlen( ibuf ) % 2 == 0 ); /* must be even number of bytes */
155
156    while( *ibuf != 0 )
157    {
158        c = *ibuf++;
159        if( c >= '0' && c <= '9' )
160            c -= '0';
161        else if( c >= 'a' && c <= 'f' )
162            c -= 'a' - 10;
163        else if( c >= 'A' && c <= 'F' )
164            c -= 'A' - 10;
165        else
166            assert( 0 );
167
168        c2 = *ibuf++;
169        if( c2 >= '0' && c2 <= '9' )
170            c2 -= '0';
171        else if( c2 >= 'a' && c2 <= 'f' )
172            c2 -= 'a' - 10;
173        else if( c2 >= 'A' && c2 <= 'F' )
174            c2 -= 'A' - 10;
175        else
176            assert( 0 );
177
178        *obuf++ = ( c << 4 ) | c2;
179    }
180
181    return len;
182}
183
184static void hexify( unsigned char *obuf, const unsigned char *ibuf, int len )
185{
186    unsigned char l, h;
187
188    while( len != 0 )
189    {
190        h = *ibuf / 16;
191        l = *ibuf % 16;
192
193        if( h < 10 )
194            *obuf++ = '0' + h;
195        else
196            *obuf++ = 'a' + h - 10;
197
198        if( l < 10 )
199            *obuf++ = '0' + l;
200        else
201            *obuf++ = 'a' + l - 10;
202
203        ++ibuf;
204        len--;
205    }
206}
207
208/**
209 * Allocate and zeroize a buffer.
210 *
211 * If the size if zero, a pointer to a zeroized 1-byte buffer is returned.
212 *
213 * For convenience, dies if allocation fails.
214 */
215static unsigned char *zero_alloc( size_t len )
216{
217    void *p;
218    size_t actual_len = ( len != 0 ) ? len : 1;
219
220    p = mbedtls_calloc( 1, actual_len );
221    assert( p != NULL );
222
223    memset( p, 0x00, actual_len );
224
225    return( p );
226}
227
228/**
229 * Allocate and fill a buffer from hex data.
230 *
231 * The buffer is sized exactly as needed. This allows to detect buffer
232 * overruns (including overreads) when running the test suite under valgrind.
233 *
234 * If the size if zero, a pointer to a zeroized 1-byte buffer is returned.
235 *
236 * For convenience, dies if allocation fails.
237 */
238static unsigned char *unhexify_alloc( const char *ibuf, size_t *olen )
239{
240    unsigned char *obuf;
241
242    *olen = strlen( ibuf ) / 2;
243
244    if( *olen == 0 )
245        return( zero_alloc( *olen ) );
246
247    obuf = mbedtls_calloc( 1, *olen );
248    assert( obuf != NULL );
249
250    (void) unhexify( obuf, ibuf );
251
252    return( obuf );
253}
254
255/**
256 * This function just returns data from rand().
257 * Although predictable and often similar on multiple
258 * runs, this does not result in identical random on
259 * each run. So do not use this if the results of a
260 * test depend on the random data that is generated.
261 *
262 * rng_state shall be NULL.
263 */
264static int rnd_std_rand( void *rng_state, unsigned char *output, size_t len )
265{
266#if !defined(__OpenBSD__)
267    size_t i;
268
269    if( rng_state != NULL )
270        rng_state  = NULL;
271
272    for( i = 0; i < len; ++i )
273        output[i] = rand();
274#else
275    if( rng_state != NULL )
276        rng_state = NULL;
277
278    arc4random_buf( output, len );
279#endif /* !OpenBSD */
280
281    return( 0 );
282}
283
284/**
285 * This function only returns zeros
286 *
287 * rng_state shall be NULL.
288 */
289static int rnd_zero_rand( void *rng_state, unsigned char *output, size_t len )
290{
291    if( rng_state != NULL )
292        rng_state  = NULL;
293
294    memset( output, 0, len );
295
296    return( 0 );
297}
298
299typedef struct
300{
301    unsigned char *buf;
302    size_t length;
303} rnd_buf_info;
304
305/**
306 * This function returns random based on a buffer it receives.
307 *
308 * rng_state shall be a pointer to a rnd_buf_info structure.
309 *
310 * The number of bytes released from the buffer on each call to
311 * the random function is specified by per_call. (Can be between
312 * 1 and 4)
313 *
314 * After the buffer is empty it will return rand();
315 */
316static int rnd_buffer_rand( void *rng_state, unsigned char *output, size_t len )
317{
318    rnd_buf_info *info = (rnd_buf_info *) rng_state;
319    size_t use_len;
320
321    if( rng_state == NULL )
322        return( rnd_std_rand( NULL, output, len ) );
323
324    use_len = len;
325    if( len > info->length )
326        use_len = info->length;
327
328    if( use_len )
329    {
330        memcpy( output, info->buf, use_len );
331        info->buf += use_len;
332        info->length -= use_len;
333    }
334
335    if( len - use_len > 0 )
336        return( rnd_std_rand( NULL, output + use_len, len - use_len ) );
337
338    return( 0 );
339}
340
341/**
342 * Info structure for the pseudo random function
343 *
344 * Key should be set at the start to a test-unique value.
345 * Do not forget endianness!
346 * State( v0, v1 ) should be set to zero.
347 */
348typedef struct
349{
350    uint32_t key[16];
351    uint32_t v0, v1;
352} rnd_pseudo_info;
353
354/**
355 * This function returns random based on a pseudo random function.
356 * This means the results should be identical on all systems.
357 * Pseudo random is based on the XTEA encryption algorithm to
358 * generate pseudorandom.
359 *
360 * rng_state shall be a pointer to a rnd_pseudo_info structure.
361 */
362static int rnd_pseudo_rand( void *rng_state, unsigned char *output, size_t len )
363{
364    rnd_pseudo_info *info = (rnd_pseudo_info *) rng_state;
365    uint32_t i, *k, sum, delta=0x9E3779B9;
366    unsigned char result[4], *out = output;
367
368    if( rng_state == NULL )
369        return( rnd_std_rand( NULL, output, len ) );
370
371    k = info->key;
372
373    while( len > 0 )
374    {
375        size_t use_len = ( len > 4 ) ? 4 : len;
376        sum = 0;
377
378        for( i = 0; i < 32; i++ )
379        {
380            info->v0 += ( ( ( info->v1 << 4 ) ^ ( info->v1 >> 5 ) )
381                            + info->v1 ) ^ ( sum + k[sum & 3] );
382            sum += delta;
383            info->v1 += ( ( ( info->v0 << 4 ) ^ ( info->v0 >> 5 ) )
384                            + info->v0 ) ^ ( sum + k[( sum>>11 ) & 3] );
385        }
386
387        PUT_UINT32_BE( info->v0, result, 0 );
388        memcpy( out, result, use_len );
389        len -= use_len;
390        out += 4;
391    }
392
393    return( 0 );
394}
395
396static void test_fail( const char *test, int line_no, const char* filename )
397{
398    test_errors++;
399    if( test_errors == 1 )
400        mbedtls_fprintf( stdout, "FAILED\n" );
401    mbedtls_fprintf( stdout, "  %s\n  at line %d, %s\n", test, line_no,
402                        filename );
403}
404
405