/* configuration.c
 *
 * Copyright (C) 2014-2021 wolfSSL Inc.
 *
 * This file is part of wolfSSH.
 *
 * wolfSSH is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * wolfSSH is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with wolfSSH.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifdef HAVE_CONFIG_H
    #include <config.h>
#endif

#ifdef WOLFSSH_SSHD
/* functions for parsing out options from a config file and for handling loading
 * key/certs using the env. filesystem */

#ifdef WOLFSSHD_UNIT_TEST
#define WOLFSSHD_STATIC
#else
#define WOLFSSHD_STATIC static
#endif

#include <wolfssh/ssh.h>
#include <wolfssh/internal.h>
#include <wolfssh/log.h>
#include <wolfssl/wolfcrypt/wc_port.h>
#include <wolfssl/wolfcrypt/error-crypt.h>

#ifdef NO_INLINE
    #include <wolfssh/misc.h>
#else
    #define WOLFSSH_MISC_INCLUDED
    #include "src/misc.c"
#endif

#include "configuration.h"

struct WOLFSSHD_CONFIG {
    void* heap;
    char* banner;
    char* chrootDir;
    char* ciphers;
    char* hostKeyFile;
    char* hostKeyAlgos;
    char* kekAlgos;
    char* listenAddress;
    char* authKeysFile;
    long  loginTimer;
    word16 port;
    byte usePrivilegeSeparation;
    byte passwordAuth:1;
    byte pubKeyAuth:1;
    byte permitRootLogin:1;
    byte permitEmptyPasswords:1;
};


/* convert a string into seconds, handles if 'm' for minutes follows the string
 * number, i.e. 2m
 * Returns the value on success and negative value on failure */
static long GetConfigInt(const char* in, int inSz, int isTime, void* heap)
{
    long ret = 0;
    int mult = 1; /* multiplier */
    int sz   = inSz;

    /* check for multipliers */
    if (isTime) {
        if (in[sz - 1] == 'm') {
            sz--;
            mult = 60;
        }
        if (in[sz - 1] == 'h') {
            sz--;
            mult = 60*60;
        }
    }

    if (ret == 0) {
        char* num = (char*)WMALLOC(sz + 1, heap, DYNTYPE_SSHD);
        if (num == NULL) {
            ret = WS_MEMORY_E;
        }
        else {
            WMEMCPY(num, in, sz);
            num[sz] = '\0';
            ret = atol(num);
            if (ret == 0 && WSTRCMP(in, "0") != 0) {
                ret = WS_BAD_ARGUMENT;
            }
            else if (ret > 0) {
                ret = ret * mult;
            }
            WFREE(num, heap, DYNTYPE_SSHD);
        }
    }

    return ret;
}

/* returns WS_SUCCESS on success */
static int CreateString(char** out, const char* in, int inSz, void* heap)
{
    int ret = WS_SUCCESS;
    int idx = 0;

    /* remove leading white spaces */
    while (idx < inSz && in[idx] == ' ') idx++;

    if (idx == inSz) {
        ret = WS_BAD_ARGUMENT;
    }

    /* malloc new string and set it */
    if (ret == WS_SUCCESS) {
        *out = (char*)WMALLOC((inSz - idx) + 1, heap, DYNTYPE_SSHD);
        if (*out == NULL) {
            ret = WS_MEMORY_E;
        }
        else {
            XMEMCPY(*out, in + idx, inSz - idx);
            *(*out + (inSz - idx)) = '\0';
        }
    }

    return ret;
}

static void FreeString(char** in, void* heap)
{
    if (*in != NULL) {
        WFREE(*in, heap, DYNTYPE_SSHD);
        *in = NULL;
    }
    (void)heap;
}


/* returns a new WOLFSSHD_CONFIG on success and NULL on failure */
WOLFSSHD_CONFIG* wolfSSHD_ConfigNew(void* heap)
{
    WOLFSSHD_CONFIG* ret;

    ret = (WOLFSSHD_CONFIG*)WMALLOC(sizeof(WOLFSSHD_CONFIG), heap,
                DYNTYPE_SSHD);
    if (ret == NULL) {
        fprintf(stderr, "Issue malloc'ing config structure for sshd\n");
    }
    else {
        WMEMSET(ret, 0, sizeof(WOLFSSHD_CONFIG));

        /* default values */
        ret->port = 22;
        ret->passwordAuth = 1;
    }
    return ret;

}

void wolfSSHD_ConfigFree(WOLFSSHD_CONFIG* conf)
{
    void* heap;

    if (conf != NULL) {
        heap = conf->heap;

        FreeString(&conf->authKeysFile, heap);
        FreeString(&conf->hostKeyFile, heap);

        WFREE(conf, heap, DYNTYPE_SSHD);
    }
}

#define MAX_LINE_SIZE 160

typedef struct {
    int tag;
    const char* name;
} CONFIG_OPTION;

enum {
    OPT_AUTH_KEYS_FILE          = 0,
    OPT_PRIV_SEP                = 1,
    OPT_PERMIT_EMPTY_PW         = 2,
    OPT_SUBSYSTEM               = 3,
    OPT_CHALLENGE_RESPONSE_AUTH = 4,
    OPT_USE_PAM                 = 5,
    OPT_X11_FORWARDING          = 6,
    OPT_PRINT_MOTD              = 7,
    OPT_ACCEPT_ENV              = 8,
    OPT_PROTOCOL                = 9,
    OPT_LOGIN_GRACE_TIME        = 10,
    OPT_HOST_KEY                = 11,
    OPT_PASSWORD_AUTH           = 12,
    OPT_PORT                    = 13,
    OPT_PERMIT_ROOT             = 14,
    OPT_USE_DNS                 = 15,
    OPT_INCLUDE                 = 16
};
enum {
    NUM_OPTIONS = 17
};

static const CONFIG_OPTION options[NUM_OPTIONS] = {
    {OPT_AUTH_KEYS_FILE,          "AuthorizedKeysFile"},
    {OPT_PRIV_SEP,                "UsePrivilegeSeparation"},
    {OPT_PERMIT_EMPTY_PW,         "PermitEmptyPasswords"},
    {OPT_SUBSYSTEM,               "Subsystem"},
    {OPT_CHALLENGE_RESPONSE_AUTH, "ChallengeResponseAuthentication"},
    {OPT_USE_PAM,                 "UsePAM"},
    {OPT_X11_FORWARDING,          "X11Forwarding"},
    {OPT_PRINT_MOTD,              "PrintMotd"},
    {OPT_ACCEPT_ENV,              "AcceptEnv"},
    {OPT_PROTOCOL,                "Protocol"},
    {OPT_LOGIN_GRACE_TIME,        "LoginGraceTime"},
    {OPT_HOST_KEY,                "HostKey"},
    {OPT_PASSWORD_AUTH,           "PasswordAuthentication"},
    {OPT_PORT,                    "Port"},
    {OPT_PERMIT_ROOT,             "PermitRootLogin"},
    {OPT_USE_DNS,                 "UseDNS"},
    {OPT_INCLUDE,                 "Include"}
};

/* returns WS_SUCCESS on success */
static int HandlePrivSep(WOLFSSHD_CONFIG* conf, const char* value)
{
    int ret = WS_SUCCESS;

    if (conf == NULL || value == NULL) {
        ret = WS_BAD_ARGUMENT;
    }

    if (ret == WS_SUCCESS) {
        if (WSTRCMP(value, "sandbox") == 0) {
            wolfSSH_Log(WS_LOG_INFO, "[SSHD] Sandbox privilege separation");
            conf->usePrivilegeSeparation = WOLFSSHD_PRIV_SANDBOX;
        }
        else if (WSTRCMP(value, "yes") == 0) {
            wolfSSH_Log(WS_LOG_INFO, "[SSHD] Privilege separation enabled");
            conf->usePrivilegeSeparation = WOLFSSHD_PRIV_SEPARAT;
        }
        else if (WSTRCMP(value, "no") == 0) {
            wolfSSH_Log(WS_LOG_INFO,
                        "[SSHD] Turning off privilege separation!");
            conf->usePrivilegeSeparation = WOLFSSHD_PRIV_OFF;
        }
        else {
            wolfSSH_Log(WS_LOG_ERROR,
                        "[SSHD] Unknown/supported privilege separation!");
            ret = WS_BAD_ARGUMENT;
        }
    }

    return ret;
}

/* returns WS_SUCCESS on success */
static int HandleLoginGraceTime(WOLFSSHD_CONFIG* conf, const char* value)
{
    int ret = WS_SUCCESS;
    long num;

    if (conf == NULL || value == NULL) {
        ret = WS_BAD_ARGUMENT;
    }

    if (ret == WS_SUCCESS) {
        num = GetConfigInt(value, (int)XSTRLEN(value), 1, conf->heap);
        if (num < 0) {
            wolfSSH_Log(WS_LOG_ERROR, "[SSHD] Issue getting login grace "
                        "time");
            ret = (int)num;
        }
        else {
            conf->loginTimer = num;
            wolfSSH_Log(WS_LOG_INFO, "[SSHD] Setting login grace time to "
                        "%ld", num);
        }
    }

    return ret;
}

/* returns WS_SUCCESS on success */
static int HandlePermitEmptyPw(WOLFSSHD_CONFIG* conf, const char* value)
{
    int ret = WS_SUCCESS;

    if (conf == NULL || value == NULL) {
        ret = WS_BAD_ARGUMENT;
    }

    if (ret == WS_SUCCESS) {
        if (WSTRCMP(value, "no") == 0) {
            conf->permitEmptyPasswords = 0;
        }
        else if (WSTRCMP(value, "yes") == 0) {
            conf->permitEmptyPasswords = 1;
        }
        else {
            ret = WS_BAD_ARGUMENT;
        }
    }

    return ret;
}

/* returns WS_SUCCESS on success */
static int HandlePermitRoot(WOLFSSHD_CONFIG* conf, const char* value)
{
    int ret = WS_SUCCESS;

    if (conf == NULL || value == NULL) {
        ret = WS_BAD_ARGUMENT;
    }

    if (ret == WS_SUCCESS) {
        if (WSTRCMP(value, "no") == 0) {
            conf->permitRootLogin = 0;
        }
        else if (WSTRCMP(value, "yes") == 0) {
            conf->permitRootLogin = 1;
        }
        else {
            ret = WS_BAD_ARGUMENT;
        }
    }

    return ret;
}

/* returns WS_SUCCESS on success */
static int HandlePwAuth(WOLFSSHD_CONFIG* conf, const char* value)
{
    int ret = WS_SUCCESS;

    if (conf == NULL || value == NULL) {
        ret = WS_BAD_ARGUMENT;
    }

    if (ret == WS_SUCCESS) {
        if (WSTRCMP(value, "no") == 0) {
            conf->passwordAuth = 0;
        }
        else if (WSTRCMP(value, "yes") == 0) {
            conf->passwordAuth = 1;
        }
        else {
            ret = WS_BAD_ARGUMENT;
        }
    }

    return ret;
}

#define WOLFSSH_PROTOCOL_VERSION 2

/* returns WS_SUCCESS on success */
static int HandleProtocol(WOLFSSHD_CONFIG* conf, const char* value)
{
    int ret = WS_SUCCESS;
    long portInt;

    if (conf == NULL || value == NULL) {
        ret = WS_BAD_ARGUMENT;
    }

    if (ret == WS_SUCCESS) {
        portInt = GetConfigInt(value, (int)WSTRLEN(value), 0, conf->heap);
        if (portInt <= 0) {
            wolfSSH_Log(WS_LOG_ERROR, "[SSHD] Invalid protocol number: %s.",
                        value);
            ret = WS_BAD_ARGUMENT;
        }
        else {
            if (portInt != WOLFSSH_PROTOCOL_VERSION) {
                wolfSSH_Log(WS_LOG_ERROR, "[SSHD] Protocol number %ld not "
                    "supported.", portInt);
                ret = WS_BAD_ARGUMENT;
            }
        }
    }

    return ret;
}

/* returns WS_SUCCESS on success */
static int HandlePort(WOLFSSHD_CONFIG* conf, const char* value)
{
    int ret = WS_SUCCESS;
    long portInt;

    if (conf == NULL || value == NULL) {
        ret = WS_BAD_ARGUMENT;
    }

    if (ret == WS_SUCCESS) {
        portInt = GetConfigInt(value, (int)WSTRLEN(value), 0, conf->heap);
        if (portInt <= 0) {
            wolfSSH_Log(WS_LOG_ERROR, "[SSHD] Invalid port number: %s.",
                        value);
            ret = WS_BAD_ARGUMENT;
        }
        else {
            if (portInt <= (word16)-1) {
                conf->port = (word16)portInt;
            }
            else {
                wolfSSH_Log(WS_LOG_ERROR, "[SSHD] Port number %ld too big.",
                            portInt);
                ret = WS_BAD_ARGUMENT;
            }
        }
    }

    return ret;
}

static int HandleInclude(WOLFSSHD_CONFIG *conf, const char *value)
{
    const char *ptr;
    const char *ptr2;
    const char *postfix = NULL;
    const char *prefix = NULL;
    int prefixLen = 0;
    int found = 0;

    /* No value, nothing to do */
    if (!value || value[0] == '\0') {
        return WS_BAD_ARGUMENT;
    }

    /* Ignore trailing whitespace */
    ptr = value + WSTRLEN(value) - 1;
    while (ptr != value) {
        if (!isspace(*ptr)) {
            ptr--;
        }
        else {
            break;
        }
    }

    /* Find wildcards */
    ptr2 = ptr;
    while (ptr2 != value) {
        if (*ptr2 == '*') {
            /* Wildcard found */
            found = 1;
            if (ptr != ptr2) {
                postfix = ptr2 + 1;
            }
            break;
        }
        if (*ptr2 == '/') {
            /* Found slash before wildcard directory-wildcards not supported */
            break;
        }
        ptr2--;
    }
    ptr = ptr2;

    /* Use wildcard */
    if (found) {
#ifdef __unix__
        int ret;
        struct dirent *dir;
        DIR *d;
        char *path;
        char *filepath = WMALLOC(PATH_MAX, NULL, 0);

        /* Back find the full path */
        while (ptr2 != value) {
            if (*ptr2 == '/') {
                break;
            }
            ptr2--;
        }

        if (ptr2 != value) {
            path = WMALLOC(ptr2 - value + 1, NULL, 0);
            memcpy(path, value, ptr2 - value);
            path[ptr2 - value] = '\0';
            prefix = ptr2 + 1;
            prefixLen = (int)(ptr - ptr2 - 1);
        } else {
            path = WMALLOC(2, NULL, 0);
            memcpy(path, ".", 1);
            path[1] = '\0';
            prefix = value;
            prefixLen = (int)(ptr - value);
        }

        d = opendir(path);
        if (d) {
            while ((dir = readdir(d)) != NULL) {
                if (dir->d_type == DT_DIR) {
                    /* Skip sub-directories */
                    continue;
                }
                else {
                    /* Check if filename prefix matches */
                    if (prefixLen > 0) {
                        if ((int)WSTRLEN(dir->d_name) <= prefixLen) {
                            continue;
                        }
                        if (WSTRNCMP(dir->d_name, prefix, prefixLen) != 0) {
                            continue;
                        }
                    }
                    if (postfix) {
                        /* Skip if file is too short */
                        if (WSTRLEN(dir->d_name) <= WSTRLEN(postfix)) {
                            continue;
                        }
                        if (WSTRNCMP(dir->d_name + WSTRLEN(dir->d_name) -
                                    WSTRLEN(postfix), postfix, WSTRLEN(postfix))
                                == 0) {
                            snprintf(filepath, PATH_MAX, "%s/%s", path,
                                     dir->d_name);
                        }
                        else {
                            /* Not a match */
                            continue;
                        }
                    }
                    else {
                        snprintf(filepath, PATH_MAX, "%s/%s", path,
                                 dir->d_name);
                    }
                    ret = wolfSSHD_ConfigLoad(conf, filepath);
                    if (ret != WS_SUCCESS) {
                        return ret;
                    }
                }
            }
        }
        else {
            /* Bad directory */
            WFREE(filepath, NULL, 0);
            return WS_BAD_ARGUMENT;
        }
        WFREE(filepath, NULL, 0);
#else
        (void)prefixLen;
        (void)prefix;
        /* Don't support wildcards here */
        return WS_BAD_ARGUMENT;
#endif
    }
    else {
        return wolfSSHD_ConfigLoad(conf, value);
    }
    return WS_SUCCESS;
}

/* returns WS_SUCCESS on success */
static int HandleConfigOption(WOLFSSHD_CONFIG* conf, int opt, const char* value)
{
    int ret = WS_BAD_ARGUMENT;

    switch (opt) {
        case OPT_AUTH_KEYS_FILE:
            ret = wolfSSHD_ConfigSetAuthKeysFile(conf, value);
            break;
        case OPT_PRIV_SEP:
            ret = HandlePrivSep(conf, value);
            break;
        case OPT_PERMIT_EMPTY_PW:
            ret = HandlePermitEmptyPw(conf, value);
            break;
        case OPT_SUBSYSTEM:
            /* TODO */
            ret = WS_SUCCESS;
            break;
        case OPT_CHALLENGE_RESPONSE_AUTH:
            /* TODO */
            ret = WS_SUCCESS;
            break;
        case OPT_USE_PAM:
            /* TODO */
            ret = WS_SUCCESS;
            break;
        case OPT_X11_FORWARDING:
            /* TODO */
            ret = WS_SUCCESS;
            break;
        case OPT_PRINT_MOTD:
            /* TODO */
            ret = WS_SUCCESS;
            break;
        case OPT_ACCEPT_ENV:
            /* TODO */
            ret = WS_SUCCESS;
            break;
        case OPT_PROTOCOL:
            /* TODO */
            ret = HandleProtocol(conf, value);
            break;
        case OPT_LOGIN_GRACE_TIME:
            ret = HandleLoginGraceTime(conf, value);
            break;
        case OPT_HOST_KEY:
            /* TODO: Add logic to check if file exists? */
            ret = wolfSSHD_ConfigSetHostKeyFile(conf, value);
            break;
        case OPT_PASSWORD_AUTH:
            ret = HandlePwAuth(conf, value);
            break;
        case OPT_PORT:
            ret = HandlePort(conf, value);
            break;
        case OPT_PERMIT_ROOT:
            ret = HandlePermitRoot(conf, value);
            break;
        case OPT_USE_DNS:
            /* TODO */
            ret = WS_SUCCESS;
            break;
        case OPT_INCLUDE:
            ret = HandleInclude(conf, value);
            break;
        default:
            break;
    }

    return ret;
}

/* helper function to count white spaces, returns the number of white spaces on
 * success */
static int CountWhitespace(const char* in, int inSz, byte inv)
{
    int i = 0;

    if (in != NULL) {
        for (; i < inSz; ++i) {
            if (inv) {
                if (isspace(in[i])) {
                    break;
                }
            }
            else {
                if (!isspace(in[i])) {
                    break;
                }
            }
        }
    }

    return i;
}

/* returns WS_SUCCESS on success
 * Fails if any option is found that is unknown/unsupported
 */
WOLFSSHD_STATIC int ParseConfigLine(WOLFSSHD_CONFIG* conf, const char* l,
                                    int lSz)
{
    int ret = WS_BAD_ARGUMENT;
    int sz  = 0;
    char tmp[MAX_FILENAME_SZ];
    int idx;
    const CONFIG_OPTION* found = NULL;

    for (idx = 0; idx < NUM_OPTIONS; ++idx) {
        sz = (int)WSTRLEN(options[idx].name);
        if (lSz >= sz && WSTRNCMP(l, options[idx].name, sz) == 0) {
            found = &options[idx];
            break;
        }
    }

    if (found != NULL) {
        /*
         * Count leading and trailing whitespace. Use that information to cut
         * out just the string itself when creating tmp.
         */
        idx = sz;
        idx += CountWhitespace(l + idx, lSz - sz, 0);
        sz = CountWhitespace(l + idx, lSz - sz, 1);
        if (sz >= MAX_FILENAME_SZ) {
            wolfSSH_Log(WS_LOG_ERROR, "[SSHD] Filename too long.");
            ret = WS_FATAL_ERROR;
        }
        else {
            WMEMCPY(tmp, l + idx, sz);
            tmp[sz] = 0;
            ret = HandleConfigOption(conf, found->tag, tmp);
        }
    }
    else {
        wolfSSH_Log(WS_LOG_ERROR, "[SSHD] Error parsing config line.");
        ret = WS_FATAL_ERROR;
    }

    return ret;
}


/* parses and loads in the given configuration file 'filename'
 * returns WS_SUCCESS on success
 */
int wolfSSHD_ConfigLoad(WOLFSSHD_CONFIG* conf, const char* filename)
{
    XFILE f;
    int ret = WS_SUCCESS;
    char buf[MAX_LINE_SIZE];
    const char* current;

    if (conf == NULL || filename == NULL)
        return BAD_FUNC_ARG;

    f = XFOPEN(filename, "rb");
    if (f == XBADFILE) {
        wolfSSH_Log(WS_LOG_ERROR, "Unable to open SSHD config file %s\n",
                filename);
        return BAD_FUNC_ARG;
    }
    wolfSSH_Log(WS_LOG_INFO, "[SSHD] parsing config file %s", filename);

    while ((current = XFGETS(buf, MAX_LINE_SIZE, f)) != NULL) {
        int currentSz = (int)XSTRLEN(current);

        /* remove leading spaces */
        while (currentSz > 0 && current[0] == ' ') {
            currentSz = currentSz - 1;
            current   = current + 1;
        }

        if (currentSz <= 1) {
            continue; /* empty line */
        }

        if (current[0] == '#') {
            continue; /* commented out line */
        }

        ret = ParseConfigLine(conf, current, currentSz);
        if (ret != WS_SUCCESS) {
            fprintf(stderr, "Unable to parse config line : %s\n", current);
            break;
        }
    }
    XFCLOSE(f);

    SetAuthKeysPattern(conf->authKeysFile);

    return ret;
}

char* wolfSSHD_ConfigGetAuthKeysFile(const WOLFSSHD_CONFIG* conf)
{
    char* ret = NULL;

    if (conf != NULL) {
        ret = conf->authKeysFile;
    }

    return ret;
}

int wolfSSHD_ConfigSetAuthKeysFile(WOLFSSHD_CONFIG* conf, const char* file)
{
    int ret = WS_SUCCESS;

    if (conf == NULL) {
        ret = WS_BAD_ARGUMENT;
    }

    if (ret == WS_SUCCESS) {
        if (conf->authKeysFile != NULL) {
            FreeString(&conf->authKeysFile, conf->heap);
            conf->authKeysFile = NULL;
        }

        if (file != NULL) {
            ret = CreateString(&conf->authKeysFile, file,
                                        (int)WSTRLEN(file), conf->heap);
        }
    }

    return ret;
}

char* wolfSSHD_ConfigGetBanner(const WOLFSSHD_CONFIG* conf)
{
    char* ret = NULL;

    if (conf != NULL) {
        ret = conf->banner;
    }

    return ret;
}

char* wolfSSHD_ConfigGetHostKeyFile(const WOLFSSHD_CONFIG* conf)
{
    char* ret = NULL;

    if (conf != NULL) {
        ret = conf->hostKeyFile;
    }

    return ret;
}

int wolfSSHD_ConfigSetHostKeyFile(WOLFSSHD_CONFIG* conf, const char* file)
{
    int ret = WS_SUCCESS;

    if (conf == NULL) {
        ret = WS_BAD_ARGUMENT;
    }

    if (ret == WS_SUCCESS) {
        if (conf->hostKeyFile != NULL) {
            FreeString(&conf->hostKeyFile, conf->heap);
            conf->hostKeyFile = NULL;
        }

        if (file != NULL) {
            ret = CreateString(&conf->hostKeyFile, file,
                                        (int)WSTRLEN(file), conf->heap);
        }
    }

    return ret;
}

word16 wolfSSHD_ConfigGetPort(const WOLFSSHD_CONFIG* conf)
{
    word16 ret = 0;

    if (conf != NULL) {
        ret = conf->port;
    }

    return ret;
}

byte wolfSSHD_ConfigGetPermitEmptyPw(const WOLFSSHD_CONFIG* conf)
{
    byte ret = 0;

    if (conf != NULL) {
        ret = conf->permitEmptyPasswords;
    }

    return ret;
}

byte wolfSSHD_ConfigGetPrivilegeSeparation(const WOLFSSHD_CONFIG* conf)
{
    byte ret = 0;

    if (conf != NULL) {
        ret = conf->usePrivilegeSeparation;
    }

    return ret;
}

byte wolfSSHD_ConfigGetPwAuth(const WOLFSSHD_CONFIG* conf)
{
    byte ret = 0;

    if (conf != NULL) {
        ret = conf->passwordAuth;
    }

    return ret;
}

byte wolfSSHD_ConfigGetPermitRoot(const WOLFSSHD_CONFIG* conf)
{
    byte ret = 0;

    if (conf != NULL) {
        ret = conf->permitRootLogin;
    }

    return ret;
}

long wolfSSHD_ConfigGetGraceTime(const WOLFSSHD_CONFIG* conf)
{
    long ret = WS_BAD_ARGUMENT;

    if (conf != NULL) {
        ret = conf->loginTimer;
    }

    return ret;
}
#endif /* WOLFSSH_SSHD */