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Current Path: /usr/src/crypto/openssl/crypto/asn1

usr / src / crypto / openssl / crypto / asn1 /

📁 ..
📄 a_bitstr.c(5.34 KB)
📄 a_d2i_fp.c(6.33 KB)
📄 a_digest.c(1.52 KB)
📄 a_dup.c(1.51 KB)
📄 a_gentm.c(2.12 KB)
📄 a_i2d_fp.c(2.25 KB)
📄 a_int.c(16.55 KB)
📄 a_mbstr.c(9.55 KB)
📄 a_object.c(10.16 KB)
📄 a_octet.c(813 B)
📄 a_print.c(2.14 KB)
📄 a_sign.c(7.08 KB)
📄 a_strex.c(17.37 KB)
📄 a_strnid.c(5.95 KB)
📄 a_time.c(14.91 KB)
📄 a_type.c(3.51 KB)
📄 a_utctm.c(2.23 KB)
📄 a_utf8.c(5.89 KB)
📄 a_verify.c(4.92 KB)
📄 ameth_lib.c(14.51 KB)
📄 asn1_err.c(18.92 KB)
📄 asn1_gen.c(22.63 KB)
📄 asn1_item_list.c(1.06 KB)
📄 asn1_item_list.h(5.5 KB)
📄 asn1_lib.c(9.38 KB)
📄 asn1_local.h(3.27 KB)
📄 asn1_par.c(13 KB)
📄 asn_mime.c(27.92 KB)
📄 asn_moid.c(2.46 KB)
📄 asn_mstbl.c(3.43 KB)
📄 asn_pack.c(1.59 KB)
📄 bio_asn1.c(11.09 KB)
📄 bio_ndef.c(5.29 KB)
📄 build.info(837 B)
📄 charmap.h(1.41 KB)
📄 charmap.pl(3.58 KB)
📄 d2i_pr.c(3.64 KB)
📄 d2i_pu.c(2.01 KB)
📄 evp_asn1.c(2.89 KB)
📄 f_int.c(3.94 KB)
📄 f_string.c(3.44 KB)
📄 i2d_pr.c(1006 B)
📄 i2d_pu.c(1.05 KB)
📄 n_pkey.c(1.89 KB)
📄 nsseq.c(1.11 KB)
📄 p5_pbe.c(2.52 KB)
📄 p5_pbev2.c(6 KB)
📄 p5_scrypt.c(7.76 KB)
📄 p8_pkey.c(2.53 KB)
📄 standard_methods.h(1.35 KB)
📄 t_bitst.c(1.56 KB)
📄 t_pkey.c(2.52 KB)
📄 t_spki.c(1.75 KB)
📄 tasn_dec.c(36.99 KB)
📄 tasn_enc.c(18.86 KB)
📄 tasn_fre.c(5.34 KB)
📄 tasn_new.c(8.95 KB)
📄 tasn_prn.c(14.63 KB)
📄 tasn_scn.c(1.37 KB)
📄 tasn_typ.c(2.94 KB)
📄 tasn_utl.c(6.64 KB)
📄 tbl_standard.h(2.7 KB)
📄 x_algor.c(3.31 KB)
📄 x_bignum.c(4.05 KB)
📄 x_info.c(895 B)
📄 x_int64.c(7.83 KB)
📄 x_long.c(5.42 KB)
📄 x_pkey.c(1.12 KB)
📄 x_sig.c(1.05 KB)
📄 x_spki.c(961 B)
📄 x_val.c(636 B)

Editing: x_int64.c

/*
 * Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <stdio.h>
#include "internal/cryptlib.h"
#include "internal/numbers.h"
#include <openssl/asn1t.h>
#include <openssl/bn.h>
#include "asn1_local.h"

/*
 * Custom primitive types for handling int32_t, int64_t, uint32_t, uint64_t.
 * This converts between an ASN1_INTEGER and those types directly.
 * This is preferred to using the LONG / ZLONG primitives.
 */

/*
 * We abuse the ASN1_ITEM fields |size| as a flags field
 */
#define INTxx_FLAG_ZERO_DEFAULT (1<<0)
#define INTxx_FLAG_SIGNED       (1<<1)

static int uint64_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
    if ((*pval = (ASN1_VALUE *)OPENSSL_zalloc(sizeof(uint64_t))) == NULL) {
        ASN1err(ASN1_F_UINT64_NEW, ERR_R_MALLOC_FAILURE);
        return 0;
    }
    return 1;
}

static void uint64_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
    OPENSSL_free(*pval);
    *pval = NULL;
}

static void uint64_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
    **(uint64_t **)pval = 0;
}

static int uint64_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype,
                    const ASN1_ITEM *it)
{
    uint64_t utmp;
    int neg = 0;
    /* this exists to bypass broken gcc optimization */
    char *cp = (char *)*pval;

/* use memcpy, because we may not be uint64_t aligned */
    memcpy(&utmp, cp, sizeof(utmp));

if ((it->size & INTxx_FLAG_ZERO_DEFAULT) == INTxx_FLAG_ZERO_DEFAULT
        && utmp == 0)
        return -1;
    if ((it->size & INTxx_FLAG_SIGNED) == INTxx_FLAG_SIGNED
        && (int64_t)utmp < 0) {
        /* i2c_uint64_int() assumes positive values */
        utmp = 0 - utmp;
        neg = 1;
    }

return i2c_uint64_int(cont, utmp, neg);
}

static int uint64_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
                    int utype, char *free_cont, const ASN1_ITEM *it)
{
    uint64_t utmp = 0;
    char *cp;
    int neg = 0;

if (*pval == NULL && !uint64_new(pval, it))
        return 0;

cp = (char *)*pval;

/*
     * Strictly speaking, zero length is malformed.  However, long_c2i
     * (x_long.c) encodes 0 as a zero length INTEGER (wrongly, of course),
     * so for the sake of backward compatibility, we still decode zero
     * length INTEGERs as the number zero.
     */
    if (len == 0)
        goto long_compat;

if (!c2i_uint64_int(&utmp, &neg, &cont, len))
        return 0;
    if ((it->size & INTxx_FLAG_SIGNED) == 0 && neg) {
        ASN1err(ASN1_F_UINT64_C2I, ASN1_R_ILLEGAL_NEGATIVE_VALUE);
        return 0;
    }
    if ((it->size & INTxx_FLAG_SIGNED) == INTxx_FLAG_SIGNED
            && !neg && utmp > INT64_MAX) {
        ASN1err(ASN1_F_UINT64_C2I, ASN1_R_TOO_LARGE);
        return 0;
    }
    if (neg)
        /* c2i_uint64_int() returns positive values */
        utmp = 0 - utmp;

long_compat:
    memcpy(cp, &utmp, sizeof(utmp));
    return 1;
}

static int uint64_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it,
                        int indent, const ASN1_PCTX *pctx)
{
    if ((it->size & INTxx_FLAG_SIGNED) == INTxx_FLAG_SIGNED)
        return BIO_printf(out, "%jd\n", **(int64_t **)pval);
    return BIO_printf(out, "%ju\n", **(uint64_t **)pval);
}

/* 32-bit variants */

static int uint32_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
    if ((*pval = (ASN1_VALUE *)OPENSSL_zalloc(sizeof(uint32_t))) == NULL) {
        ASN1err(ASN1_F_UINT32_NEW, ERR_R_MALLOC_FAILURE);
        return 0;
    }
    return 1;
}

static void uint32_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
    OPENSSL_free(*pval);
    *pval = NULL;
}

static void uint32_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
    **(uint32_t **)pval = 0;
}

static int uint32_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype,
                    const ASN1_ITEM *it)
{
    uint32_t utmp;
    int neg = 0;
    /* this exists to bypass broken gcc optimization */
    char *cp = (char *)*pval;

/* use memcpy, because we may not be uint32_t aligned */
    memcpy(&utmp, cp, sizeof(utmp));

if ((it->size & INTxx_FLAG_ZERO_DEFAULT) == INTxx_FLAG_ZERO_DEFAULT
        && utmp == 0)
        return -1;
    if ((it->size & INTxx_FLAG_SIGNED) == INTxx_FLAG_SIGNED
        && (int32_t)utmp < 0) {
        /* i2c_uint64_int() assumes positive values */
        utmp = 0 - utmp;
        neg = 1;
    }

return i2c_uint64_int(cont, (uint64_t)utmp, neg);
}

/*
 * Absolute value of INT32_MIN: we can't just use -INT32_MIN as it produces
 * overflow warnings.
 */

#define ABS_INT32_MIN ((uint32_t)INT32_MAX + 1)

static int uint32_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
                    int utype, char *free_cont, const ASN1_ITEM *it)
{
    uint64_t utmp = 0;
    uint32_t utmp2 = 0;
    char *cp;
    int neg = 0;

if (*pval == NULL && !uint64_new(pval, it))
        return 0;

cp = (char *)*pval;

if (!c2i_uint64_int(&utmp, &neg, &cont, len))
        return 0;
    if ((it->size & INTxx_FLAG_SIGNED) == 0 && neg) {
        ASN1err(ASN1_F_UINT32_C2I, ASN1_R_ILLEGAL_NEGATIVE_VALUE);
        return 0;
    }
    if (neg) {
        if (utmp > ABS_INT32_MIN) {
            ASN1err(ASN1_F_UINT32_C2I, ASN1_R_TOO_SMALL);
            return 0;
        }
        utmp = 0 - utmp;
    } else {
        if (((it->size & INTxx_FLAG_SIGNED) != 0 && utmp > INT32_MAX)
            || ((it->size & INTxx_FLAG_SIGNED) == 0 && utmp > UINT32_MAX)) {
            ASN1err(ASN1_F_UINT32_C2I, ASN1_R_TOO_LARGE);
            return 0;
        }
    }

long_compat:
    utmp2 = (uint32_t)utmp;
    memcpy(cp, &utmp2, sizeof(utmp2));
    return 1;
}

static int uint32_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it,
                        int indent, const ASN1_PCTX *pctx)
{
    if ((it->size & INTxx_FLAG_SIGNED) == INTxx_FLAG_SIGNED)
        return BIO_printf(out, "%d\n", **(int32_t **)pval);
    return BIO_printf(out, "%u\n", **(uint32_t **)pval);
}

/* Define the primitives themselves */

static ASN1_PRIMITIVE_FUNCS uint32_pf = {
    NULL, 0,
    uint32_new,
    uint32_free,
    uint32_clear,
    uint32_c2i,
    uint32_i2c,
    uint32_print
};

static ASN1_PRIMITIVE_FUNCS uint64_pf = {
    NULL, 0,
    uint64_new,
    uint64_free,
    uint64_clear,
    uint64_c2i,
    uint64_i2c,
    uint64_print
};

ASN1_ITEM_start(INT32)
    ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &uint32_pf,
    INTxx_FLAG_SIGNED, "INT32"
ASN1_ITEM_end(INT32)

ASN1_ITEM_start(UINT32)
    ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &uint32_pf, 0, "UINT32"
ASN1_ITEM_end(UINT32)

ASN1_ITEM_start(INT64)
    ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &uint64_pf,
    INTxx_FLAG_SIGNED, "INT64"
ASN1_ITEM_end(INT64)

ASN1_ITEM_start(UINT64)
    ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &uint64_pf, 0, "UINT64"
ASN1_ITEM_end(UINT64)

ASN1_ITEM_start(ZINT32)
    ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &uint32_pf,
    INTxx_FLAG_ZERO_DEFAULT|INTxx_FLAG_SIGNED, "ZINT32"
ASN1_ITEM_end(ZINT32)

ASN1_ITEM_start(ZUINT32)
    ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &uint32_pf,
    INTxx_FLAG_ZERO_DEFAULT, "ZUINT32"
ASN1_ITEM_end(ZUINT32)

ASN1_ITEM_start(ZINT64)
    ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &uint64_pf,
    INTxx_FLAG_ZERO_DEFAULT|INTxx_FLAG_SIGNED, "ZINT64"
ASN1_ITEM_end(ZINT64)

ASN1_ITEM_start(ZUINT64)
    ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &uint64_pf,
    INTxx_FLAG_ZERO_DEFAULT, "ZUINT64"
ASN1_ITEM_end(ZUINT64)

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Editing: x_int64.c

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