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mirror of https://github.com/Mbed-TLS/mbedtls.git synced 2025-07-30 22:43:08 +03:00

Switch to the new code style

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine
2023-01-11 14:52:35 +01:00
parent 480f683d15
commit 1b6c09a62e
391 changed files with 73134 additions and 75084 deletions

View File

@ -36,203 +36,219 @@
/*
* ASN.1 DER decoding routines
*/
int mbedtls_asn1_get_len( unsigned char **p,
const unsigned char *end,
size_t *len )
int mbedtls_asn1_get_len(unsigned char **p,
const unsigned char *end,
size_t *len)
{
if( ( end - *p ) < 1 )
return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
if ((end - *p) < 1) {
return MBEDTLS_ERR_ASN1_OUT_OF_DATA;
}
if( ( **p & 0x80 ) == 0 )
if ((**p & 0x80) == 0) {
*len = *(*p)++;
else
{
switch( **p & 0x7F )
{
case 1:
if( ( end - *p ) < 2 )
return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
} else {
switch (**p & 0x7F) {
case 1:
if ((end - *p) < 2) {
return MBEDTLS_ERR_ASN1_OUT_OF_DATA;
}
*len = (*p)[1];
(*p) += 2;
break;
*len = (*p)[1];
(*p) += 2;
break;
case 2:
if( ( end - *p ) < 3 )
return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
case 2:
if ((end - *p) < 3) {
return MBEDTLS_ERR_ASN1_OUT_OF_DATA;
}
*len = ( (size_t)(*p)[1] << 8 ) | (*p)[2];
(*p) += 3;
break;
*len = ((size_t) (*p)[1] << 8) | (*p)[2];
(*p) += 3;
break;
case 3:
if( ( end - *p ) < 4 )
return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
case 3:
if ((end - *p) < 4) {
return MBEDTLS_ERR_ASN1_OUT_OF_DATA;
}
*len = ( (size_t)(*p)[1] << 16 ) |
( (size_t)(*p)[2] << 8 ) | (*p)[3];
(*p) += 4;
break;
*len = ((size_t) (*p)[1] << 16) |
((size_t) (*p)[2] << 8) | (*p)[3];
(*p) += 4;
break;
case 4:
if( ( end - *p ) < 5 )
return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
case 4:
if ((end - *p) < 5) {
return MBEDTLS_ERR_ASN1_OUT_OF_DATA;
}
*len = ( (size_t)(*p)[1] << 24 ) | ( (size_t)(*p)[2] << 16 ) |
( (size_t)(*p)[3] << 8 ) | (*p)[4];
(*p) += 5;
break;
*len = ((size_t) (*p)[1] << 24) | ((size_t) (*p)[2] << 16) |
((size_t) (*p)[3] << 8) | (*p)[4];
(*p) += 5;
break;
default:
return( MBEDTLS_ERR_ASN1_INVALID_LENGTH );
default:
return MBEDTLS_ERR_ASN1_INVALID_LENGTH;
}
}
if( *len > (size_t) ( end - *p ) )
return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
if (*len > (size_t) (end - *p)) {
return MBEDTLS_ERR_ASN1_OUT_OF_DATA;
}
return( 0 );
return 0;
}
int mbedtls_asn1_get_tag( unsigned char **p,
const unsigned char *end,
size_t *len, int tag )
int mbedtls_asn1_get_tag(unsigned char **p,
const unsigned char *end,
size_t *len, int tag)
{
if( ( end - *p ) < 1 )
return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
if ((end - *p) < 1) {
return MBEDTLS_ERR_ASN1_OUT_OF_DATA;
}
if( **p != tag )
return( MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
if (**p != tag) {
return MBEDTLS_ERR_ASN1_UNEXPECTED_TAG;
}
(*p)++;
return( mbedtls_asn1_get_len( p, end, len ) );
return mbedtls_asn1_get_len(p, end, len);
}
int mbedtls_asn1_get_bool( unsigned char **p,
const unsigned char *end,
int *val )
int mbedtls_asn1_get_bool(unsigned char **p,
const unsigned char *end,
int *val)
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
size_t len;
if( ( ret = mbedtls_asn1_get_tag( p, end, &len, MBEDTLS_ASN1_BOOLEAN ) ) != 0 )
return( ret );
if ((ret = mbedtls_asn1_get_tag(p, end, &len, MBEDTLS_ASN1_BOOLEAN)) != 0) {
return ret;
}
if( len != 1 )
return( MBEDTLS_ERR_ASN1_INVALID_LENGTH );
if (len != 1) {
return MBEDTLS_ERR_ASN1_INVALID_LENGTH;
}
*val = ( **p != 0 ) ? 1 : 0;
*val = (**p != 0) ? 1 : 0;
(*p)++;
return( 0 );
return 0;
}
static int asn1_get_tagged_int( unsigned char **p,
const unsigned char *end,
int tag, int *val )
static int asn1_get_tagged_int(unsigned char **p,
const unsigned char *end,
int tag, int *val)
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
size_t len;
if( ( ret = mbedtls_asn1_get_tag( p, end, &len, tag ) ) != 0 )
return( ret );
if ((ret = mbedtls_asn1_get_tag(p, end, &len, tag)) != 0) {
return ret;
}
/*
* len==0 is malformed (0 must be represented as 020100 for INTEGER,
* or 0A0100 for ENUMERATED tags
*/
if( len == 0 )
return( MBEDTLS_ERR_ASN1_INVALID_LENGTH );
if (len == 0) {
return MBEDTLS_ERR_ASN1_INVALID_LENGTH;
}
/* This is a cryptography library. Reject negative integers. */
if( ( **p & 0x80 ) != 0 )
return( MBEDTLS_ERR_ASN1_INVALID_LENGTH );
if ((**p & 0x80) != 0) {
return MBEDTLS_ERR_ASN1_INVALID_LENGTH;
}
/* Skip leading zeros. */
while( len > 0 && **p == 0 )
{
++( *p );
while (len > 0 && **p == 0) {
++(*p);
--len;
}
/* Reject integers that don't fit in an int. This code assumes that
* the int type has no padding bit. */
if( len > sizeof( int ) )
return( MBEDTLS_ERR_ASN1_INVALID_LENGTH );
if( len == sizeof( int ) && ( **p & 0x80 ) != 0 )
return( MBEDTLS_ERR_ASN1_INVALID_LENGTH );
if (len > sizeof(int)) {
return MBEDTLS_ERR_ASN1_INVALID_LENGTH;
}
if (len == sizeof(int) && (**p & 0x80) != 0) {
return MBEDTLS_ERR_ASN1_INVALID_LENGTH;
}
*val = 0;
while( len-- > 0 )
{
*val = ( *val << 8 ) | **p;
while (len-- > 0) {
*val = (*val << 8) | **p;
(*p)++;
}
return( 0 );
return 0;
}
int mbedtls_asn1_get_int( unsigned char **p,
int mbedtls_asn1_get_int(unsigned char **p,
const unsigned char *end,
int *val)
{
return asn1_get_tagged_int(p, end, MBEDTLS_ASN1_INTEGER, val);
}
int mbedtls_asn1_get_enum(unsigned char **p,
const unsigned char *end,
int *val )
int *val)
{
return( asn1_get_tagged_int( p, end, MBEDTLS_ASN1_INTEGER, val) );
}
int mbedtls_asn1_get_enum( unsigned char **p,
const unsigned char *end,
int *val )
{
return( asn1_get_tagged_int( p, end, MBEDTLS_ASN1_ENUMERATED, val) );
return asn1_get_tagged_int(p, end, MBEDTLS_ASN1_ENUMERATED, val);
}
#if defined(MBEDTLS_BIGNUM_C)
int mbedtls_asn1_get_mpi( unsigned char **p,
const unsigned char *end,
mbedtls_mpi *X )
int mbedtls_asn1_get_mpi(unsigned char **p,
const unsigned char *end,
mbedtls_mpi *X)
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
size_t len;
if( ( ret = mbedtls_asn1_get_tag( p, end, &len, MBEDTLS_ASN1_INTEGER ) ) != 0 )
return( ret );
if ((ret = mbedtls_asn1_get_tag(p, end, &len, MBEDTLS_ASN1_INTEGER)) != 0) {
return ret;
}
ret = mbedtls_mpi_read_binary( X, *p, len );
ret = mbedtls_mpi_read_binary(X, *p, len);
*p += len;
return( ret );
return ret;
}
#endif /* MBEDTLS_BIGNUM_C */
int mbedtls_asn1_get_bitstring( unsigned char **p, const unsigned char *end,
mbedtls_asn1_bitstring *bs)
int mbedtls_asn1_get_bitstring(unsigned char **p, const unsigned char *end,
mbedtls_asn1_bitstring *bs)
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
/* Certificate type is a single byte bitstring */
if( ( ret = mbedtls_asn1_get_tag( p, end, &bs->len, MBEDTLS_ASN1_BIT_STRING ) ) != 0 )
return( ret );
if ((ret = mbedtls_asn1_get_tag(p, end, &bs->len, MBEDTLS_ASN1_BIT_STRING)) != 0) {
return ret;
}
/* Check length, subtract one for actual bit string length */
if( bs->len < 1 )
return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
if (bs->len < 1) {
return MBEDTLS_ERR_ASN1_OUT_OF_DATA;
}
bs->len -= 1;
/* Get number of unused bits, ensure unused bits <= 7 */
bs->unused_bits = **p;
if( bs->unused_bits > 7 )
return( MBEDTLS_ERR_ASN1_INVALID_LENGTH );
if (bs->unused_bits > 7) {
return MBEDTLS_ERR_ASN1_INVALID_LENGTH;
}
(*p)++;
/* Get actual bitstring */
bs->p = *p;
*p += bs->len;
if( *p != end )
return( MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
if (*p != end) {
return MBEDTLS_ERR_ASN1_LENGTH_MISMATCH;
}
return( 0 );
return 0;
}
/*
@ -244,105 +260,106 @@ int mbedtls_asn1_traverse_sequence_of(
const unsigned char *end,
unsigned char tag_must_mask, unsigned char tag_must_val,
unsigned char tag_may_mask, unsigned char tag_may_val,
int (*cb)( void *ctx, int tag,
unsigned char *start, size_t len ),
void *ctx )
int (*cb)(void *ctx, int tag,
unsigned char *start, size_t len),
void *ctx)
{
int ret;
size_t len;
/* Get main sequence tag */
if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
{
return( ret );
if ((ret = mbedtls_asn1_get_tag(p, end, &len,
MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) != 0) {
return ret;
}
if( *p + len != end )
return( MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
if (*p + len != end) {
return MBEDTLS_ERR_ASN1_LENGTH_MISMATCH;
}
while( *p < end )
{
while (*p < end) {
unsigned char const tag = *(*p)++;
if( ( tag & tag_must_mask ) != tag_must_val )
return( MBEDTLS_ERR_ASN1_UNEXPECTED_TAG );
if ((tag & tag_must_mask) != tag_must_val) {
return MBEDTLS_ERR_ASN1_UNEXPECTED_TAG;
}
if( ( ret = mbedtls_asn1_get_len( p, end, &len ) ) != 0 )
return( ret );
if ((ret = mbedtls_asn1_get_len(p, end, &len)) != 0) {
return ret;
}
if( ( tag & tag_may_mask ) == tag_may_val )
{
if( cb != NULL )
{
ret = cb( ctx, tag, *p, len );
if( ret != 0 )
return( ret );
if ((tag & tag_may_mask) == tag_may_val) {
if (cb != NULL) {
ret = cb(ctx, tag, *p, len);
if (ret != 0) {
return ret;
}
}
}
*p += len;
}
return( 0 );
return 0;
}
/*
* Get a bit string without unused bits
*/
int mbedtls_asn1_get_bitstring_null( unsigned char **p, const unsigned char *end,
size_t *len )
int mbedtls_asn1_get_bitstring_null(unsigned char **p, const unsigned char *end,
size_t *len)
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
if( ( ret = mbedtls_asn1_get_tag( p, end, len, MBEDTLS_ASN1_BIT_STRING ) ) != 0 )
return( ret );
if ((ret = mbedtls_asn1_get_tag(p, end, len, MBEDTLS_ASN1_BIT_STRING)) != 0) {
return ret;
}
if( *len == 0 )
return( MBEDTLS_ERR_ASN1_INVALID_DATA );
--( *len );
if (*len == 0) {
return MBEDTLS_ERR_ASN1_INVALID_DATA;
}
--(*len);
if( **p != 0 )
return( MBEDTLS_ERR_ASN1_INVALID_DATA );
++( *p );
if (**p != 0) {
return MBEDTLS_ERR_ASN1_INVALID_DATA;
}
++(*p);
return( 0 );
return 0;
}
void mbedtls_asn1_sequence_free( mbedtls_asn1_sequence *seq )
void mbedtls_asn1_sequence_free(mbedtls_asn1_sequence *seq)
{
while( seq != NULL )
{
while (seq != NULL) {
mbedtls_asn1_sequence *next = seq->next;
mbedtls_platform_zeroize( seq, sizeof( *seq ) );
mbedtls_free( seq );
mbedtls_platform_zeroize(seq, sizeof(*seq));
mbedtls_free(seq);
seq = next;
}
}
typedef struct
{
typedef struct {
int tag;
mbedtls_asn1_sequence *cur;
} asn1_get_sequence_of_cb_ctx_t;
static int asn1_get_sequence_of_cb( void *ctx,
int tag,
unsigned char *start,
size_t len )
static int asn1_get_sequence_of_cb(void *ctx,
int tag,
unsigned char *start,
size_t len)
{
asn1_get_sequence_of_cb_ctx_t *cb_ctx =
(asn1_get_sequence_of_cb_ctx_t *) ctx;
mbedtls_asn1_sequence *cur =
cb_ctx->cur;
if( cur->buf.p != NULL )
{
if (cur->buf.p != NULL) {
cur->next =
mbedtls_calloc( 1, sizeof( mbedtls_asn1_sequence ) );
mbedtls_calloc(1, sizeof(mbedtls_asn1_sequence));
if( cur->next == NULL )
return( MBEDTLS_ERR_ASN1_ALLOC_FAILED );
if (cur->next == NULL) {
return MBEDTLS_ERR_ASN1_ALLOC_FAILED;
}
cur = cur->next;
}
@ -352,124 +369,128 @@ static int asn1_get_sequence_of_cb( void *ctx,
cur->buf.tag = tag;
cb_ctx->cur = cur;
return( 0 );
return 0;
}
/*
* Parses and splits an ASN.1 "SEQUENCE OF <tag>"
*/
int mbedtls_asn1_get_sequence_of( unsigned char **p,
const unsigned char *end,
mbedtls_asn1_sequence *cur,
int tag)
int mbedtls_asn1_get_sequence_of(unsigned char **p,
const unsigned char *end,
mbedtls_asn1_sequence *cur,
int tag)
{
asn1_get_sequence_of_cb_ctx_t cb_ctx = { tag, cur };
memset( cur, 0, sizeof( mbedtls_asn1_sequence ) );
return( mbedtls_asn1_traverse_sequence_of(
p, end, 0xFF, tag, 0, 0,
asn1_get_sequence_of_cb, &cb_ctx ) );
memset(cur, 0, sizeof(mbedtls_asn1_sequence));
return mbedtls_asn1_traverse_sequence_of(
p, end, 0xFF, tag, 0, 0,
asn1_get_sequence_of_cb, &cb_ctx);
}
int mbedtls_asn1_get_alg( unsigned char **p,
const unsigned char *end,
mbedtls_asn1_buf *alg, mbedtls_asn1_buf *params )
int mbedtls_asn1_get_alg(unsigned char **p,
const unsigned char *end,
mbedtls_asn1_buf *alg, mbedtls_asn1_buf *params)
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
size_t len;
if( ( ret = mbedtls_asn1_get_tag( p, end, &len,
MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) ) != 0 )
return( ret );
if ((ret = mbedtls_asn1_get_tag(p, end, &len,
MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE)) != 0) {
return ret;
}
if( ( end - *p ) < 1 )
return( MBEDTLS_ERR_ASN1_OUT_OF_DATA );
if ((end - *p) < 1) {
return MBEDTLS_ERR_ASN1_OUT_OF_DATA;
}
alg->tag = **p;
end = *p + len;
if( ( ret = mbedtls_asn1_get_tag( p, end, &alg->len, MBEDTLS_ASN1_OID ) ) != 0 )
return( ret );
if ((ret = mbedtls_asn1_get_tag(p, end, &alg->len, MBEDTLS_ASN1_OID)) != 0) {
return ret;
}
alg->p = *p;
*p += alg->len;
if( *p == end )
{
mbedtls_platform_zeroize( params, sizeof(mbedtls_asn1_buf) );
return( 0 );
if (*p == end) {
mbedtls_platform_zeroize(params, sizeof(mbedtls_asn1_buf));
return 0;
}
params->tag = **p;
(*p)++;
if( ( ret = mbedtls_asn1_get_len( p, end, &params->len ) ) != 0 )
return( ret );
if ((ret = mbedtls_asn1_get_len(p, end, &params->len)) != 0) {
return ret;
}
params->p = *p;
*p += params->len;
if( *p != end )
return( MBEDTLS_ERR_ASN1_LENGTH_MISMATCH );
if (*p != end) {
return MBEDTLS_ERR_ASN1_LENGTH_MISMATCH;
}
return( 0 );
return 0;
}
int mbedtls_asn1_get_alg_null( unsigned char **p,
const unsigned char *end,
mbedtls_asn1_buf *alg )
int mbedtls_asn1_get_alg_null(unsigned char **p,
const unsigned char *end,
mbedtls_asn1_buf *alg)
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
mbedtls_asn1_buf params;
memset( &params, 0, sizeof(mbedtls_asn1_buf) );
memset(&params, 0, sizeof(mbedtls_asn1_buf));
if( ( ret = mbedtls_asn1_get_alg( p, end, alg, &params ) ) != 0 )
return( ret );
if ((ret = mbedtls_asn1_get_alg(p, end, alg, &params)) != 0) {
return ret;
}
if( ( params.tag != MBEDTLS_ASN1_NULL && params.tag != 0 ) || params.len != 0 )
return( MBEDTLS_ERR_ASN1_INVALID_DATA );
if ((params.tag != MBEDTLS_ASN1_NULL && params.tag != 0) || params.len != 0) {
return MBEDTLS_ERR_ASN1_INVALID_DATA;
}
return( 0 );
return 0;
}
void mbedtls_asn1_free_named_data( mbedtls_asn1_named_data *cur )
void mbedtls_asn1_free_named_data(mbedtls_asn1_named_data *cur)
{
if( cur == NULL )
if (cur == NULL) {
return;
}
mbedtls_free( cur->oid.p );
mbedtls_free( cur->val.p );
mbedtls_free(cur->oid.p);
mbedtls_free(cur->val.p);
mbedtls_platform_zeroize( cur, sizeof( mbedtls_asn1_named_data ) );
mbedtls_platform_zeroize(cur, sizeof(mbedtls_asn1_named_data));
}
void mbedtls_asn1_free_named_data_list( mbedtls_asn1_named_data **head )
void mbedtls_asn1_free_named_data_list(mbedtls_asn1_named_data **head)
{
mbedtls_asn1_named_data *cur;
while( ( cur = *head ) != NULL )
{
while ((cur = *head) != NULL) {
*head = cur->next;
mbedtls_asn1_free_named_data( cur );
mbedtls_free( cur );
mbedtls_asn1_free_named_data(cur);
mbedtls_free(cur);
}
}
mbedtls_asn1_named_data *mbedtls_asn1_find_named_data( mbedtls_asn1_named_data *list,
const char *oid, size_t len )
mbedtls_asn1_named_data *mbedtls_asn1_find_named_data(mbedtls_asn1_named_data *list,
const char *oid, size_t len)
{
while( list != NULL )
{
if( list->oid.len == len &&
memcmp( list->oid.p, oid, len ) == 0 )
{
while (list != NULL) {
if (list->oid.len == len &&
memcmp(list->oid.p, oid, len) == 0) {
break;
}
list = list->next;
}
return( list );
return list;
}
#endif /* MBEDTLS_ASN1_PARSE_C */