examples/fips_validation/fips_validation.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2018 Intel Corporation
 */

#include <stdio.h>
#include <string.h>

#include <rte_string_fns.h>
#include <rte_cryptodev.h>
#include <rte_malloc.h>

#include "fips_validation.h"

#define skip_white_spaces(pos)          \
({                      \
    __typeof__(pos) _p = (pos);     \
    for ( ; isspace(*_p); _p++)     \
        ;               \
    _p;                 \
})

static int
get_file_line(void)
{
    FILE *fp = info.fp_rd;
    char *line = info.one_line_text;
    int ret;
    uint32_t loc = 0;

    memset(line, 0, MAX_LINE_CHAR);
    while ((ret = fgetc(fp)) != EOF) {
        char c = (char)ret;

        if (loc >= MAX_LINE_CHAR - 1)
            return -ENOMEM;
        if (c == '\n')
            break;
        line[loc++] = c;
    }

    if (ret == EOF)
        return -EOF;

    return 0;
}

int
fips_test_fetch_one_block(void)
{
    size_t size;
    int ret = 0;
    uint32_t i;

    for (i = 0; i < info.nb_vec_lines; i++) {
        free(info.vec[i]);
        info.vec[i] = NULL;
    }

    i = 0;
    do {
        if (i >= MAX_LINE_PER_VECTOR) {
            ret = -ENOMEM;
            goto error_exit;
        }

        ret = get_file_line();
        size = strlen(info.one_line_text);
        if (size == 0)
            break;

        info.vec[i] = calloc(1, size + 5);
        if (info.vec[i] == NULL)
            goto error_exit;

        strlcpy(info.vec[i], info.one_line_text, size + 1);
        i++;
    } while (ret == 0);

    info.nb_vec_lines = i;

    return ret;

error_exit:
    for (i = 0; i < MAX_LINE_PER_VECTOR; i++)
        if (info.vec[i] != NULL) {
            free(info.vec[i]);
            info.vec[i] = NULL;
        }

    info.nb_vec_lines = 0;

    return -ENOMEM;
}

static int
fips_test_parse_header(void)
{
    uint32_t i;
    char *tmp;
    int ret;
    int algo_parsed = 0;
    time_t t = time(NULL);
    struct tm *tm_now = localtime(&t);

    ret = fips_test_fetch_one_block();
    if (ret < 0)
        return ret;

    for (i = 0; i < info.nb_vec_lines; i++) {
        if (!algo_parsed) {
            if (strstr(info.vec[i], "AESVS")) {
                algo_parsed = 1;
                info.algo = FIPS_TEST_ALGO_AES;
                ret = parse_test_aes_init();
                if (ret < 0)
                    return ret;
            } else if (strstr(info.vec[i], "GCM")) {
                algo_parsed = 1;
                info.algo = FIPS_TEST_ALGO_AES_GCM;
                ret = parse_test_gcm_init();
                if (ret < 0)
                    return ret;
            } else if (strstr(info.vec[i], "CMAC")) {
                algo_parsed = 1;
                info.algo = FIPS_TEST_ALGO_AES_CMAC;
                ret = parse_test_cmac_init();
                if (ret < 0)
                    return 0;
            } else if (strstr(info.vec[i], "CCM")) {
                algo_parsed = 1;
                info.algo = FIPS_TEST_ALGO_AES_CCM;
                ret = parse_test_ccm_init();
                if (ret < 0)
                    return 0;
            } else if (strstr(info.vec[i], "HMAC")) {
                algo_parsed = 1;
                info.algo = FIPS_TEST_ALGO_HMAC;
                ret = parse_test_hmac_init();
                if (ret < 0)
                    return ret;
            } else if (strstr(info.vec[i], "TDES")) {
                algo_parsed = 1;
                info.algo = FIPS_TEST_ALGO_TDES;
                ret = parse_test_tdes_init();
                if (ret < 0)
                    return 0;
            } else if (strstr(info.vec[i], "PERMUTATION")) {
                algo_parsed = 1;
                info.algo = FIPS_TEST_ALGO_TDES;
                ret = parse_test_tdes_init();
                if (ret < 0)
                    return 0;
            } else if (strstr(info.vec[i], "VARIABLE")) {
                algo_parsed = 1;
                info.algo = FIPS_TEST_ALGO_TDES;
                ret = parse_test_tdes_init();
                if (ret < 0)
                    return 0;
            } else if (strstr(info.vec[i], "SUBSTITUTION")) {
                algo_parsed = 1;
                info.algo = FIPS_TEST_ALGO_TDES;
                ret = parse_test_tdes_init();
                if (ret < 0)
                    return 0;
            } else if (strstr(info.vec[i], "SHA-")) {
                algo_parsed = 1;
                info.algo = FIPS_TEST_ALGO_SHA;
                ret = parse_test_sha_init();
                if (ret < 0)
                    return ret;
            } else if (strstr(info.vec[i], "XTS")) {
                algo_parsed = 1;
                info.algo = FIPS_TEST_ALGO_AES_XTS;
                ret = parse_test_xts_init();
                if (ret < 0)
                    return ret;
            }
        }

        tmp = strstr(info.vec[i], "# Config info for ");
        if (tmp != NULL) {
            fprintf(info.fp_wr, "%s%s\n", "# Config info for DPDK Cryptodev ",
                    info.device_name);
            continue;
        }

        tmp = strstr(info.vec[i], "#  HMAC information for ");
        if (tmp != NULL) {
            fprintf(info.fp_wr, "%s%s\n", "#  HMAC information for "
                "DPDK Cryptodev ",
                info.device_name);
            continue;
        }

        tmp = strstr(info.vec[i], "# Config Info for : ");
        if (tmp != NULL) {

            fprintf(info.fp_wr, "%s%s\n", "# Config Info for DPDK Cryptodev : ",
                    info.device_name);
            continue;
        }

        tmp = strstr(info.vec[i], "# information for ");
        if (tmp != NULL) {

            char tmp_output[128] = {0};

            strlcpy(tmp_output, info.vec[i], tmp - info.vec[i] + 1);

            fprintf(info.fp_wr, "%s%s%s\n", tmp_output,
                    "information for DPDK Cryptodev ",
                    info.device_name);
            continue;
        }

        tmp = strstr(info.vec[i], " test information for ");
        if (tmp != NULL) {
            char tmp_output[128] = {0};

            strlcpy(tmp_output, info.vec[i], tmp - info.vec[i] + 1);

            fprintf(info.fp_wr, "%s%s%s\n", tmp_output,
                    "test information for DPDK Cryptodev ",
                    info.device_name);
            continue;
        }

        tmp = strstr(info.vec[i], "\" information for \"");
        if (tmp != NULL) {
            char tmp_output[128] = {0};

            strlcpy(tmp_output, info.vec[i], tmp - info.vec[i] + 1);

            fprintf(info.fp_wr, "%s%s%s\n", tmp_output,
                    "\" information for DPDK Cryptodev ",
                    info.device_name);
            continue;
        }

        if (i == info.nb_vec_lines - 1) {
            fprintf(info.fp_wr, "%s%s\n", "# Generated on ",
                    asctime(tm_now));
            continue;
        }

        /* to this point, no field need to update,
         *  only copy to rsp file
         */
        fprintf(info.fp_wr, "%s\n", info.vec[i]);
    }

    return 0;
}

static int
parse_file_type(const char *path)
{
    const char *tmp = path + strlen(path) - 3;

    if (strstr(tmp, REQ_FILE_PERFIX))
        info.file_type = FIPS_TYPE_REQ;
    else if (strstr(tmp, RSP_FILE_PERFIX))
        info.file_type = FIPS_TYPE_RSP;
    else if (strstr(path, FAX_FILE_PERFIX))
        info.file_type = FIPS_TYPE_FAX;
    else
        return -EINVAL;

    return 0;
}

int
fips_test_init(const char *req_file_path, const char *rsp_file_path,
        const char *device_name)
{
    if (strcmp(req_file_path, rsp_file_path) == 0) {
        RTE_LOG(ERR, USER1, "File paths cannot be the same\n");
        return -EINVAL;
    }

    fips_test_clear();

    strcpy(info.file_name, req_file_path);
    info.algo = FIPS_TEST_ALGO_MAX;
    if (parse_file_type(req_file_path) < 0) {
        RTE_LOG(ERR, USER1, "File %s type not supported\n",
                req_file_path);
        return -EINVAL;
    }

    info.fp_rd = fopen(req_file_path, "r");
    if (!info.fp_rd) {
        RTE_LOG(ERR, USER1, "Cannot open file %s\n", req_file_path);
        return -EINVAL;
    }

    info.fp_wr = fopen(rsp_file_path, "w");
    if (!info.fp_wr) {
        RTE_LOG(ERR, USER1, "Cannot open file %s\n", rsp_file_path);
        return -EINVAL;
    }

    info.one_line_text = calloc(1, MAX_LINE_CHAR);
    if (!info.one_line_text) {
        RTE_LOG(ERR, USER1, "Insufficient memory\n");
        return -ENOMEM;
    }

    strlcpy(info.device_name, device_name, sizeof(info.device_name));

    if (fips_test_parse_header() < 0) {
        RTE_LOG(ERR, USER1, "Failed parsing header\n");
        return -1;
    }

    return 0;
}

void
fips_test_clear(void)
{
    if (info.fp_rd)
        fclose(info.fp_rd);
    if (info.fp_wr)
        fclose(info.fp_wr);
    if (info.one_line_text)
        free(info.one_line_text);
    if (info.nb_vec_lines) {
        uint32_t i;

        for (i = 0; i < info.nb_vec_lines; i++)
            free(info.vec[i]);
    }

    memset(&info, 0, sizeof(info));
}

int
fips_test_parse_one_case(void)
{
    uint32_t i, j = 0;
    uint32_t is_interim = 0;
    int ret;

    if (info.interim_callbacks) {
        for (i = 0; i < info.nb_vec_lines; i++) {
            for (j = 0; info.interim_callbacks[j].key != NULL; j++)
                if (strstr(info.vec[i],
                    info.interim_callbacks[j].key)) {
                    is_interim = 1;

                    ret = info.interim_callbacks[j].cb(
                        info.interim_callbacks[j].key,
                        info.vec[i],
                        info.interim_callbacks[j].val);
                    if (ret < 0)
                        return ret;
                }
        }
    }

    if (is_interim) {
        for (i = 0; i < info.nb_vec_lines; i++)
            fprintf(info.fp_wr, "%s\n", info.vec[i]);
        fprintf(info.fp_wr, "\n");
        return 1;
    }

    for (i = 0; i < info.nb_vec_lines; i++) {
        for (j = 0; info.callbacks[j].key != NULL; j++)
            if (strstr(info.vec[i], info.callbacks[j].key)) {
                ret = info.callbacks[j].cb(
                    info.callbacks[j].key,
                    info.vec[i], info.callbacks[j].val);
                if (ret < 0)
                    return ret;
                break;
            }
    }

    return 0;
}

void
fips_test_write_one_case(void)
{
    uint32_t i;

    for (i = 0; i < info.nb_vec_lines; i++)
        fprintf(info.fp_wr, "%s\n", info.vec[i]);
}

static int
parser_read_uint64_hex(uint64_t *value, const char *p)
{
    char *next;
    uint64_t val;

    p = skip_white_spaces(p);

    val = strtoul(p, &next, 16);
    if (p == next)
        return -EINVAL;

    p = skip_white_spaces(next);
    if (*p != '\0')
        return -EINVAL;

    *value = val;
    return 0;
}

int
parser_read_uint8_hex(uint8_t *value, const char *p)
{
    uint64_t val = 0;
    int ret = parser_read_uint64_hex(&val, p);

    if (ret < 0)
        return ret;

    if (val > UINT8_MAX)
        return -ERANGE;

    *value = val;
    return 0;
}

int
parse_uint8_known_len_hex_str(const char *key, char *src, struct fips_val *val)
{
    struct fips_val tmp_val = {0};
    uint32_t len = val->len;
    int ret;

    if (len == 0) {
        if (val->val != NULL) {
            rte_free(val->val);
            val->val = NULL;
        }

        return 0;
    }

    ret = parse_uint8_hex_str(key, src, &tmp_val);
    if (ret < 0)
        return ret;

    if (tmp_val.len == val->len) {
        val->val = tmp_val.val;
        return 0;
    }

    if (tmp_val.len < val->len) {
        rte_free(tmp_val.val);
        return -EINVAL;
    }

    val->val = rte_zmalloc(NULL, val->len, 0);
    if (!val->val) {
        rte_free(tmp_val.val);
        memset(val, 0, sizeof(*val));
        return -ENOMEM;
    }

    memcpy(val->val, tmp_val.val, val->len);
    rte_free(tmp_val.val);

    return 0;
}

int
parse_uint8_hex_str(const char *key, char *src, struct fips_val *val)
{
    uint32_t len, j;

    src += strlen(key);

    len = strlen(src) / 2;

    if (val->val) {
        rte_free(val->val);
        val->val = NULL;
    }

    val->val = rte_zmalloc(NULL, len, 0);
    if (!val->val)
        return -ENOMEM;

    for (j = 0; j < len; j++) {
        char byte[3] = {src[j * 2], src[j * 2 + 1], '\0'};

        if (parser_read_uint8_hex(&val->val[j], byte) < 0) {
            rte_free(val->val);
            memset(val, 0, sizeof(*val));
            return -EINVAL;
        }
    }

    val->len = len;

    return 0;
}

int
parser_read_uint32_val(const char *key, char *src, struct fips_val *val)
{
    char *data = src + strlen(key);
    size_t data_len = strlen(data);
    int ret;

    if (data[data_len - 1] == ']') {
        char *tmp_data = calloc(1, data_len + 1);

        if (tmp_data == NULL)
            return -ENOMEM;

        strlcpy(tmp_data, data, data_len);

        ret = parser_read_uint32(&val->len, tmp_data);

        free(tmp_data);
    } else
        ret = parser_read_uint32(&val->len, data);

    return ret;
}

int
parser_read_uint32_bit_val(const char *key, char *src, struct fips_val *val)
{
    int ret;

    ret = parser_read_uint32_val(key, src, val);

    if (ret < 0)
        return ret;

    val->len /= 8;

    return 0;
}

int
writeback_hex_str(const char *key, char *dst, struct fips_val *val)
{
    char *str = dst;
    uint32_t len;

    str += strlen(key);

    for (len = 0; len < val->len; len++)
        snprintf(str + len * 2, 255, "%02x", val->val[len]);

    return 0;
}

static int
parser_read_uint64(uint64_t *value, const char *p)
{
    char *next;
    uint64_t val;

    p = skip_white_spaces(p);
    if (!isdigit(*p))
        return -EINVAL;

    val = strtoul(p, &next, 10);
    if (p == next)
        return -EINVAL;

    p = next;
    switch (*p) {
    case 'T':
        val *= 1024ULL;
        /* fall through */
    case 'G':
        val *= 1024ULL;
        /* fall through */
    case 'M':
        val *= 1024ULL;
        /* fall through */
    case 'k':
    case 'K':
        val *= 1024ULL;
        p++;
        break;
    }

    p = skip_white_spaces(p);
    if (*p != '\0')
        return -EINVAL;

    *value = val;
    return 0;
}

int
parser_read_uint32(uint32_t *value, char *p)
{
    uint64_t val = 0;
    int ret = parser_read_uint64(&val, p);

    if (ret < 0)
        return ret;

    if (val > UINT32_MAX)
        return -EINVAL;

    *value = val;
    return 0;
}

void
parse_write_hex_str(struct fips_val *src)
{
    writeback_hex_str("", info.one_line_text, src);

    fprintf(info.fp_wr, "%s\n", info.one_line_text);
}

int
update_info_vec(uint32_t count)
{
    const struct fips_test_callback *cb;
    uint32_t i, j;

    if (!info.writeback_callbacks)
        return -1;

    cb = &info.writeback_callbacks[0];

    snprintf(info.vec[0], strlen(info.vec[0]) + 4, "%s%u", cb->key, count);

    for (i = 1; i < info.nb_vec_lines; i++) {
        for (j = 1; info.writeback_callbacks[j].key != NULL; j++) {
            cb = &info.writeback_callbacks[j];
            if (strstr(info.vec[i], cb->key)) {
                cb->cb(cb->key, info.vec[i], cb->val);
                break;
            }
        }
    }

    return 0;
}