Commit 231f1337 authored by Kurt Roeckx's avatar Kurt Roeckx
Browse files

Make asn1 fuzzer more reproducible 



Reviewed-by: default avatarRich Salz <rsalz@openssl.org>
GH: #2041
parent 7d152a3c

fuzz/asn1.c

+16 −8
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ 
#include <openssl/ts.h>

#include <openssl/x509v3.h>

#include <openssl/cms.h>

#include <openssl/err.h>

#include "fuzzer.h"



static ASN1_ITEM_EXP *item_type[] = {
@@ -183,8 +184,21 @@ static ASN1_ITEM_EXP *item_type[] = { 
    NULL

};



static ASN1_PCTX *pctx;



int FuzzerInitialize(int *argc, char ***argv)

{

    pctx = ASN1_PCTX_new();

    ASN1_PCTX_set_flags(pctx, ASN1_PCTX_FLAGS_SHOW_ABSENT |

        ASN1_PCTX_FLAGS_SHOW_SEQUENCE | ASN1_PCTX_FLAGS_SHOW_SSOF |

        ASN1_PCTX_FLAGS_SHOW_TYPE | ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME);

    ASN1_PCTX_set_str_flags(pctx, ASN1_STRFLGS_UTF8_CONVERT |

        ASN1_STRFLGS_SHOW_TYPE | ASN1_STRFLGS_DUMP_ALL);



    OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);

    ERR_get_state();

    CRYPTO_free_ex_index(0, -1);



    return 1;

}
@@ -192,13 +206,6 @@ int FuzzerTestOneInput(const uint8_t *buf, size_t len) 
{

    int n;



    ASN1_PCTX *pctx = ASN1_PCTX_new();



    ASN1_PCTX_set_flags(pctx, ASN1_PCTX_FLAGS_SHOW_ABSENT |

        ASN1_PCTX_FLAGS_SHOW_SEQUENCE | ASN1_PCTX_FLAGS_SHOW_SSOF |

        ASN1_PCTX_FLAGS_SHOW_TYPE | ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME);

    ASN1_PCTX_set_str_flags(pctx, ASN1_STRFLGS_UTF8_CONVERT |

        ASN1_STRFLGS_SHOW_TYPE | ASN1_STRFLGS_DUMP_ALL);



    for (n = 0; item_type[n] != NULL; ++n) {

        const uint8_t *b = buf;
@@ -218,11 +225,12 @@ int FuzzerTestOneInput(const uint8_t *buf, size_t len) 
        }

    }



    ASN1_PCTX_free(pctx);

    ERR_clear_error();



    return 0;

}



void FuzzerCleanup(void)

{

    ASN1_PCTX_free(pctx);

}