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Migrated from x509_req_name to asn1_named_data structure

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This commit is contained in:
Paul Bakker 2013-09-09 12:02:36 +02:00
parent c547cc992e
commit 5f45e62afe
4 changed files with 67 additions and 110 deletions
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13
include/polarssl/asn1write.h
View file

@ -105,10 +105,12 @@ int asn1_write_null( unsigned char **p, unsigned char *start );
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param oid the OID to write
* \param oid_len length of the OID
*
* \return the length written or a negative error code
*/
int asn1_write_oid( unsigned char **p, unsigned char *start, const char *oid );
int asn1_write_oid( unsigned char **p, unsigned char *start,
const char *oid, size_t oid_len );
/**
* \brief Write an AlgorithmIdentifier sequence in ASN.1 format
@ -118,11 +120,12 @@ int asn1_write_oid( unsigned char **p, unsigned char *start, const char *oid );
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param oid the OID of the algorithm
* \param oid_len length of the OID
*
* \return the length written or a negative error code
*/
int asn1_write_algorithm_identifier( unsigned char **p, unsigned char *start,
const char *oid );
const char *oid, size_t oid_len );
/**
* \brief Write a boolean tag (ASN1_BOOLEAN) and value in ASN.1 format
@ -156,11 +159,12 @@ int asn1_write_int( unsigned char **p, unsigned char *start, int val );
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param text the text to write
* \param text_len length of the text
*
* \return the length written or a negative error code
*/
int asn1_write_printable_string( unsigned char **p, unsigned char *start,
char *text );
const char *text, size_t text_len );
/**
* \brief Write an IA5 string tag (ASN1_IA5_STRING) and
@ -170,11 +174,12 @@ int asn1_write_printable_string( unsigned char **p, unsigned char *start,
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param text the text to write
* \param text_len length of the text
*
* \return the length written or a negative error code
*/
int asn1_write_ia5_string( unsigned char **p, unsigned char *start,
char *text );
const char *text, size_t text_len );
/**
* \brief Write a bitstring tag (ASN1_BIT_STRING) and

18
include/polarssl/x509write.h
View file

@ -60,25 +60,13 @@ extern "C" {
* \{
*/
/**
* Container for CSR named objects
*/
typedef struct _x509_req_name
{
char oid[128];
char name[128];
struct _x509_req_name *next;
}
x509_req_name;
/**
* Container for a CSR
*/
typedef struct _x509_csr
{
rsa_context *rsa;
x509_req_name *subject;
asn1_named_data *subject;
md_type_t md_alg;
asn1_named_data *extensions;
}
@ -100,8 +88,8 @@ typedef struct _x509write_cert
mpi serial;
rsa_context *subject_key;
rsa_context *issuer_key;
x509_req_name *subject;
x509_req_name *issuer;
asn1_named_data *subject;
asn1_named_data *issuer;
md_type_t md_alg;
char not_before[X509_RFC5280_UTC_TIME_LEN + 1];
char not_after[X509_RFC5280_UTC_TIME_LEN + 1];

25
library/asn1write.c
View file

@ -143,14 +143,14 @@ int asn1_write_null( unsigned char **p, unsigned char *start )
return( len );
}
int asn1_write_oid( unsigned char **p, unsigned char *start, const char *oid )
int asn1_write_oid( unsigned char **p, unsigned char *start,
const char *oid, size_t oid_len )
{
int ret;
size_t len = 0;
ASN1_CHK_ADD( len, asn1_write_raw_buffer( p, start,
(const unsigned char *) oid, strlen( oid ) ) );
(const unsigned char *) oid, oid_len ) );
ASN1_CHK_ADD( len , asn1_write_len( p, start, len ) );
ASN1_CHK_ADD( len , asn1_write_tag( p, start, ASN1_OID ) );
@ -158,23 +158,20 @@ int asn1_write_oid( unsigned char **p, unsigned char *start, const char *oid )
}
int asn1_write_algorithm_identifier( unsigned char **p, unsigned char *start,
const char *oid )
const char *oid, size_t oid_len )
{
int ret;
size_t null_len = 0;
size_t oid_len = 0;
size_t len = 0;
// Write NULL
//
ASN1_CHK_ADD( null_len, asn1_write_null( p, start ) );
ASN1_CHK_ADD( len, asn1_write_null( p, start ) );
// Write OID
//
ASN1_CHK_ADD( oid_len, asn1_write_oid( p, start, oid ) );
ASN1_CHK_ADD( len, asn1_write_oid( p, start, oid, oid_len ) );
len = oid_len + null_len;
ASN1_CHK_ADD( len, asn1_write_len( p, start, oid_len + null_len ) );
ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) );
ASN1_CHK_ADD( len, asn1_write_tag( p, start,
ASN1_CONSTRUCTED | ASN1_SEQUENCE ) );
@ -229,13 +226,13 @@ int asn1_write_int( unsigned char **p, unsigned char *start, int val )
}
int asn1_write_printable_string( unsigned char **p, unsigned char *start,
char *text )
const char *text, size_t text_len )
{
int ret;
size_t len = 0;
ASN1_CHK_ADD( len, asn1_write_raw_buffer( p, start,
(const unsigned char *) text, strlen( text ) ) );
(const unsigned char *) text, text_len ) );
ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) );
ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_PRINTABLE_STRING ) );
@ -244,13 +241,13 @@ int asn1_write_printable_string( unsigned char **p, unsigned char *start,
}
int asn1_write_ia5_string( unsigned char **p, unsigned char *start,
char *text )
const char *text, size_t text_len )
{
int ret;
size_t len = 0;
ASN1_CHK_ADD( len, asn1_write_raw_buffer( p, start,
(const unsigned char *) text, strlen( text ) ) );
(const unsigned char *) text, text_len ) );
ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) );
ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_IA5_STRING ) );

121
library/x509write.c
View file

@ -47,15 +47,17 @@
#define polarssl_free free
#endif
static int x509write_string_to_names( x509_req_name **head, char *name )
static int x509write_string_to_names( asn1_named_data **head, char *name )
{
int ret = 0;
char *s = name, *c = s;
char *end = s + strlen( s );
char *oid = NULL;
int in_tag = 1;
x509_req_name *cur;
asn1_named_data *cur;
// Clear existing chain if present
//
while( *head != NULL )
{
cur = *head;
@ -93,28 +95,13 @@ static int x509write_string_to_names( x509_req_name **head, char *name )
if( !in_tag && ( *c == ',' || c == end ) )
{
if( c - s > 127 )
if( ( cur = asn1_store_named_data( head, oid, strlen( oid ),
(unsigned char *) s,
c - s ) ) == NULL )
{
ret = POLARSSL_ERR_X509WRITE_BAD_INPUT_DATA;
goto exit;
return( POLARSSL_ERR_X509WRITE_MALLOC_FAILED );
}
cur = polarssl_malloc( sizeof(x509_req_name) );
if( cur == NULL )
{
ret = POLARSSL_ERR_X509WRITE_MALLOC_FAILED;
goto exit;
}
memset( cur, 0, sizeof(x509_req_name) );
cur->next = *head;
*head = cur;
strncpy( cur->oid, oid, strlen( oid ) );
strncpy( cur->name, s, c - s );
s = c + 1;
in_tag = 1;
}
@ -154,21 +141,8 @@ void x509write_csr_init( x509_csr *ctx )
void x509write_csr_free( x509_csr *ctx )
{
x509_req_name *cur;
asn1_named_data *cur_ext;
while( ( cur = ctx->subject ) != NULL )
{
ctx->subject = cur->next;
polarssl_free( cur );
}
while( ( cur_ext = ctx->extensions ) != NULL )
{
ctx->extensions = cur_ext->next;
asn1_free_named_data( cur_ext );
polarssl_free( cur_ext );
}
asn1_free_named_data_list( &ctx->subject );
asn1_free_named_data_list( &ctx->extensions );
memset( ctx, 0, sizeof(x509_csr) );
}
@ -268,29 +242,11 @@ void x509write_crt_init( x509write_cert *ctx )
void x509write_crt_free( x509write_cert *ctx )
{
x509_req_name *cur;
asn1_named_data *cur_ext;
mpi_free( &ctx->serial );
while( ( cur = ctx->subject ) != NULL )
{
ctx->subject = cur->next;
polarssl_free( cur );
}
while( ( cur = ctx->issuer ) != NULL )
{
ctx->issuer = cur->next;
polarssl_free( cur );
}
while( ( cur_ext = ctx->extensions ) != NULL )
{
ctx->extensions = cur_ext->next;
asn1_free_named_data( cur_ext );
polarssl_free( cur_ext );
}
asn1_free_named_data_list( &ctx->subject );
asn1_free_named_data_list( &ctx->issuer );
asn1_free_named_data_list( &ctx->extensions );
memset( ctx, 0, sizeof(x509_csr) );
}
@ -456,7 +412,8 @@ int x509write_pubkey_der( rsa_context *rsa, unsigned char *buf, size_t size )
ASN1_CHK_ADD( len, asn1_write_len( &c, buf, len ) );
ASN1_CHK_ADD( len, asn1_write_tag( &c, buf, ASN1_BIT_STRING ) );
ASN1_CHK_ADD( len, asn1_write_algorithm_identifier( &c, buf, OID_PKCS1_RSA ) );
ASN1_CHK_ADD( len, asn1_write_algorithm_identifier( &c, buf,
OID_PKCS1_RSA, OID_SIZE( OID_PKCS1_RSA ) ) );
ASN1_CHK_ADD( len, asn1_write_len( &c, buf, len ) );
ASN1_CHK_ADD( len, asn1_write_tag( &c, buf, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) );
@ -521,30 +478,34 @@ int x509write_key_der( rsa_context *rsa, unsigned char *buf, size_t size )
*
* AttributeValue ::= ANY DEFINED BY AttributeType
*/
static int x509_write_name( unsigned char **p, unsigned char *start, char *oid,
char *name )
static int x509_write_name( unsigned char **p, unsigned char *start,
const char *oid, size_t oid_len,
const unsigned char *name, size_t name_len )
{
int ret;
size_t string_len = 0;
size_t oid_len = 0;
size_t len = 0;
// Write PrintableString for all except OID_PKCS9_EMAIL
//
if( OID_SIZE( OID_PKCS9_EMAIL ) == strlen( oid ) &&
memcmp( oid, OID_PKCS9_EMAIL, strlen( oid ) ) == 0 )
if( OID_SIZE( OID_PKCS9_EMAIL ) == oid_len &&
memcmp( oid, OID_PKCS9_EMAIL, oid_len ) == 0 )
{
ASN1_CHK_ADD( string_len, asn1_write_ia5_string( p, start, name ) );
ASN1_CHK_ADD( len, asn1_write_ia5_string( p, start,
(const char *) name,
name_len ) );
}
else
ASN1_CHK_ADD( string_len, asn1_write_printable_string( p, start, name ) );
{
ASN1_CHK_ADD( len, asn1_write_printable_string( p, start,
(const char *) name,
name_len ) );
}
// Write OID
//
ASN1_CHK_ADD( oid_len, asn1_write_oid( p, start, oid ) );
ASN1_CHK_ADD( len, asn1_write_oid( p, start, oid, oid_len ) );
len = oid_len + string_len;
ASN1_CHK_ADD( len, asn1_write_len( p, start, oid_len + string_len ) );
ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) );
ASN1_CHK_ADD( len, asn1_write_tag( p, start, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) );
ASN1_CHK_ADD( len, asn1_write_len( p, start, len ) );
@ -554,15 +515,17 @@ static int x509_write_name( unsigned char **p, unsigned char *start, char *oid,
}
static int x509_write_names( unsigned char **p, unsigned char *start,
x509_req_name *first )
asn1_named_data *first )
{
int ret;
size_t len = 0;
x509_req_name *cur = first;
asn1_named_data *cur = first;
while( cur != NULL )
{
ASN1_CHK_ADD( len, x509_write_name( p, start, cur->oid, cur->name ) );
ASN1_CHK_ADD( len, x509_write_name( p, start, (char *) cur->oid.p,
cur->oid.len,
cur->val.p, cur->val.len ) );
cur = cur->next;
}
@ -593,7 +556,8 @@ static int x509_write_sig( unsigned char **p, unsigned char *start,
// Write OID
//
ASN1_CHK_ADD( len, asn1_write_algorithm_identifier( p, start, oid ) );
ASN1_CHK_ADD( len, asn1_write_algorithm_identifier( p, start, oid,
strlen( oid ) ) );
return( len );
}
@ -703,7 +667,8 @@ int x509write_csr_der( x509_csr *ctx, unsigned char *buf, size_t size )
ASN1_CHK_ADD( len, asn1_write_len( &c, tmp_buf, len ) );
ASN1_CHK_ADD( len, asn1_write_tag( &c, tmp_buf, ASN1_CONSTRUCTED | ASN1_SET ) );
ASN1_CHK_ADD( len, asn1_write_oid( &c, tmp_buf, OID_PKCS9_CSR_EXT_REQ ) );
ASN1_CHK_ADD( len, asn1_write_oid( &c, tmp_buf, OID_PKCS9_CSR_EXT_REQ,
OID_SIZE( OID_PKCS9_CSR_EXT_REQ ) ) );
ASN1_CHK_ADD( len, asn1_write_len( &c, tmp_buf, len ) );
ASN1_CHK_ADD( len, asn1_write_tag( &c, tmp_buf, ASN1_CONSTRUCTED | ASN1_SEQUENCE ) );
@ -732,7 +697,8 @@ int x509write_csr_der( x509_csr *ctx, unsigned char *buf, size_t size )
ASN1_CHK_ADD( pub_len, asn1_write_len( &c, tmp_buf, pub_len ) );
ASN1_CHK_ADD( pub_len, asn1_write_tag( &c, tmp_buf, ASN1_BIT_STRING ) );
ASN1_CHK_ADD( pub_len, asn1_write_algorithm_identifier( &c, tmp_buf, OID_PKCS1_RSA ) );
ASN1_CHK_ADD( pub_len, asn1_write_algorithm_identifier( &c, tmp_buf,
OID_PKCS1_RSA, OID_SIZE( OID_PKCS1_RSA ) ) );
len += pub_len;
ASN1_CHK_ADD( len, asn1_write_len( &c, tmp_buf, pub_len ) );
@ -820,7 +786,8 @@ int x509write_crt_der( x509write_cert *ctx, unsigned char *buf, size_t size )
ASN1_CHK_ADD( pub_len, asn1_write_len( &c, tmp_buf, pub_len ) );
ASN1_CHK_ADD( pub_len, asn1_write_tag( &c, tmp_buf, ASN1_BIT_STRING ) );
ASN1_CHK_ADD( pub_len, asn1_write_algorithm_identifier( &c, tmp_buf, OID_PKCS1_RSA ) );
ASN1_CHK_ADD( pub_len, asn1_write_algorithm_identifier( &c, tmp_buf,
OID_PKCS1_RSA, OID_SIZE( OID_PKCS1_RSA ) ) );
len += pub_len;
ASN1_CHK_ADD( len, asn1_write_len( &c, tmp_buf, pub_len ) );
@ -857,7 +824,7 @@ int x509write_crt_der( x509write_cert *ctx, unsigned char *buf, size_t size )
* Signature ::= AlgorithmIdentifier
*/
ASN1_CHK_ADD( len, asn1_write_algorithm_identifier( &c, tmp_buf,
sig_oid ) );
sig_oid, strlen( sig_oid ) ) );
/*
* Serial ::= INTEGER