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Shut up a few clang-analyze warnings about use of uninitialized variables

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The functions are all safe, Clang just isn't clever enough to realise
it.
This commit is contained in:
Nicholas Wilson 2016-04-13 11:48:25 +01:00
parent 2cc69fffcf
commit 409401c044
3 changed files with 19 additions and 4 deletions
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2
library/pkcs12.c
View File

@ -93,7 +93,7 @@ static int pkcs12_pbe_derive_key_iv( mbedtls_asn1_buf *pbe_params, mbedtls_md_ty
unsigned char *key, size_t keylen, unsigned char *key, size_t keylen,
unsigned char *iv, size_t ivlen ) unsigned char *iv, size_t ivlen )
{ {
int ret, iterations; int ret, iterations = 0;
mbedtls_asn1_buf salt; mbedtls_asn1_buf salt;
size_t i; size_t i;
unsigned char unipwd[PKCS12_MAX_PWDLEN * 2 + 2]; unsigned char unipwd[PKCS12_MAX_PWDLEN * 2 + 2];

19
library/rsa.c
View File

@ -797,7 +797,12 @@ int mbedtls_rsa_rsaes_pkcs1_v15_decrypt( mbedtls_rsa_context *ctx,
int ret; int ret;
size_t ilen, pad_count = 0, i; size_t ilen, pad_count = 0, i;
unsigned char *p, bad, pad_done = 0; unsigned char *p, bad, pad_done = 0;
#ifdef __clang_analyzer__
/* Shut up Clang, mbedtls_rsa_public/private writes to this */
unsigned char buf[MBEDTLS_MPI_MAX_SIZE] = { };
#else
unsigned char buf[MBEDTLS_MPI_MAX_SIZE]; unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
#endif
if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V15 ) if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V15 )
return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
@ -1175,13 +1180,18 @@ int mbedtls_rsa_rsassa_pss_verify_ext( mbedtls_rsa_context *ctx,
int ret; int ret;
size_t siglen; size_t siglen;
unsigned char *p; unsigned char *p;
unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
unsigned char result[MBEDTLS_MD_MAX_SIZE]; unsigned char result[MBEDTLS_MD_MAX_SIZE];
unsigned char zeros[8]; unsigned char zeros[8];
unsigned int hlen; unsigned int hlen;
size_t slen, msb; size_t slen, msb;
const mbedtls_md_info_t *md_info; const mbedtls_md_info_t *md_info;
mbedtls_md_context_t md_ctx; mbedtls_md_context_t md_ctx;
#ifdef __clang_analyzer__
/* Shut up Clang, mbedtls_rsa_public/private writes to this */
unsigned char buf[MBEDTLS_MPI_MAX_SIZE] = { };
#else
unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
#endif
if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V21 ) if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V21 )
return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );
@ -1320,10 +1330,15 @@ int mbedtls_rsa_rsassa_pkcs1_v15_verify( mbedtls_rsa_context *ctx,
int ret; int ret;
size_t len, siglen, asn1_len; size_t len, siglen, asn1_len;
unsigned char *p, *end; unsigned char *p, *end;
unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
mbedtls_md_type_t msg_md_alg; mbedtls_md_type_t msg_md_alg;
const mbedtls_md_info_t *md_info; const mbedtls_md_info_t *md_info;
mbedtls_asn1_buf oid; mbedtls_asn1_buf oid;
#ifdef __clang_analyzer__
/* Shut up Clang, mbedtls_rsa_public/private writes to this */
unsigned char buf[MBEDTLS_MPI_MAX_SIZE] = { };
#else
unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
#endif
if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V15 ) if( mode == MBEDTLS_RSA_PRIVATE && ctx->padding != MBEDTLS_RSA_PKCS_V15 )
return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA ); return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA );

2
programs/hash/generic_sum.c
View File

@ -83,7 +83,7 @@ static int generic_check( const mbedtls_md_info_t *md_info, char *filename )
int nb_err1, nb_err2; int nb_err1, nb_err2;
int nb_tot1, nb_tot2; int nb_tot1, nb_tot2;
unsigned char sum[MBEDTLS_MD_MAX_SIZE]; unsigned char sum[MBEDTLS_MD_MAX_SIZE];
char buf[MBEDTLS_MD_MAX_SIZE * 2 + 1], line[1024]; char buf[MBEDTLS_MD_MAX_SIZE * 2 + 1] = { }, line[1024];
char diff; char diff;
if( ( f = fopen( filename, "rb" ) ) == NULL ) if( ( f = fopen( filename, "rb" ) ) == NULL )