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Split x509_csr_parse_der() out of x509_csr_parse()

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This commit is contained in:
Manuel Pégourié-Gonnard 2014-06-16 18:06:48 +02:00
parent 15f58a86f7
commit f3b47243df
3 changed files with 69 additions and 41 deletions
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94
library/x509_csr.c
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@ -90,18 +90,15 @@ static int x509_csr_get_version( unsigned char **p,
}
/*
* Parse a CSR
* Parse a CSR in DER format
*/
int x509_csr_parse( x509_csr *csr, const unsigned char *buf, size_t buflen )
int x509_csr_parse_der( x509_csr *csr,
const unsigned char *buf, size_t buflen )
{
int ret;
size_t len;
unsigned char *p, *end;
x509_buf sig_params;
#if defined(POLARSSL_PEM_PARSE_C)
size_t use_len;
pem_context pem;
#endif
memset( &sig_params, 0, sizeof( x509_buf ) );
@ -113,41 +110,15 @@ int x509_csr_parse( x509_csr *csr, const unsigned char *buf, size_t buflen )
x509_csr_init( csr );
#if defined(POLARSSL_PEM_PARSE_C)
pem_init( &pem );
ret = pem_read_buffer( &pem,
"-----BEGIN CERTIFICATE REQUEST-----",
"-----END CERTIFICATE REQUEST-----",
buf, NULL, 0, &use_len );
/*
* first copy the raw DER data
*/
p = (unsigned char *) polarssl_malloc( len = buflen );
if( ret == 0 )
{
/*
* Was PEM encoded, steal PEM buffer
*/
p = pem.buf;
pem.buf = NULL;
len = pem.buflen;
pem_free( &pem );
}
else if( ret != POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
{
pem_free( &pem );
return( ret );
}
else
#endif /* POLARSSL_PEM_PARSE_C */
{
/*
* nope, copy the raw DER data
*/
p = (unsigned char *) polarssl_malloc( len = buflen );
if( p == NULL )
return( POLARSSL_ERR_X509_MALLOC_FAILED );
if( p == NULL )
return( POLARSSL_ERR_X509_MALLOC_FAILED );
memcpy( p, buf, buflen );
}
memcpy( p, buf, buflen );
csr->raw.p = p;
csr->raw.len = len;
@ -284,6 +255,51 @@ int x509_csr_parse( x509_csr *csr, const unsigned char *buf, size_t buflen )
return( 0 );
}
/*
* Parse a CSR, allowing for PEM or raw DER encoding
*/
int x509_csr_parse( x509_csr *csr, const unsigned char *buf, size_t buflen )
{
int ret;
#if defined(POLARSSL_PEM_PARSE_C)
size_t use_len;
pem_context pem;
#endif
/*
* Check for valid input
*/
if( csr == NULL || buf == NULL )
return( POLARSSL_ERR_X509_BAD_INPUT_DATA );
#if defined(POLARSSL_PEM_PARSE_C)
pem_init( &pem );
ret = pem_read_buffer( &pem,
"-----BEGIN CERTIFICATE REQUEST-----",
"-----END CERTIFICATE REQUEST-----",
buf, NULL, 0, &use_len );
if( ret == 0 )
{
/*
* Was PEM encoded, parse the result
*/
if( ( ret = x509_csr_parse_der( csr, pem.buf, pem.buflen ) ) != 0 )
return( ret );
pem_free( &pem );
return( 0 );
}
else if( ret != POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
{
pem_free( &pem );
return( ret );
}
else
#endif /* POLARSSL_PEM_PARSE_C */
return( x509_csr_parse_der( csr, buf, buflen ) );
}
#if defined(POLARSSL_FS_IO)
/*
* Load a CSR into the structure