shellmatta/test/integrationtest_auth/test_integration_auth.cpp

/*
 * Copyright (c) 2019 - 2024 Stefan Strobel <stefan.strobel@shimatta.net>
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */

/**
 * @file    test_integration_auth.cpp
 * @brief   integration test implementation for the authentication functions
 * @author  Stefan Strobel <stefan.strobel@shimatta.net>
 */

#include "test/framework/catch.hpp"
extern "C" {
#include "shellmatta.h"
}
#include <string.h>

static uint32_t write_callCnt = 0u;
static char write_data[1024];
static uint32_t write_length;
static uint32_t privateTemp;
static uint32_t userIdTemp;
static bool successTemp;

#define TEST_SHELLMATTA_SETUP   shellmatta_retCode_t ret;                   \
                                shellmatta_instance_t inst;                 \
                                shellmatta_handle_t handle;                 \
                                char buffer[1024] = {0};                    \
                                char historyBuffer[1024] = {0};             \
                                                                            \
                                shellmatta_doInit(  &inst,                  \
                                                    &handle,                \
                                                    buffer,                 \
                                                    sizeof(buffer),         \
                                                    historyBuffer,          \
                                                    sizeof(historyBuffer),  \
                                                    "shellmatta->",         \
                                                    NULL,                   \
                                                    writeFct);              \
                                                                            \
                                write_callCnt = 0u;                         \
                                memset(write_data, 0, sizeof(write_data));  \
                                write_length = 0u;                          \
                                privateTemp = 0u;                           \
                                userIdTemp = 255u;                          \
                                successTemp = false;                        \
                                                                            \
                                shellmatta_addCmd(handle, &publicCmd);      \
                                shellmatta_addCmd(handle, &privateCmd);

#define TEST_SHELLMATTA_AUTH_SETUP  shellmatta_auth_user_t userList[] = {                                                   \
                                        {1, false, "shimatta", "12345678"},                                                 \
                                        {2, false, "not_shimatta", "87654321"},                                             \
                                        {3, true, "root", "rootpw"}                                                         \
                                    };                                                                                      \
                                                                                                                            \
                                    uint32_t privateCmdPerms[] = {1};                                                       \
                                    shellmatta_auth_perm_t permList[] = {                                                   \
                                        {"private", privateCmdPerms, sizeof(privateCmdPerms)/sizeof(privateCmdPerms[0])},    \
                                        {"additional", privateCmdPerms, sizeof(privateCmdPerms)/sizeof(privateCmdPerms[0])} \
                                    };                                                                                      \
                                                                                                                            \
                                    shellmatta_auth_init(handle, userList, 3, permList, 2, false, NULL, NULL);

static shellmatta_retCode_t writeFct(const char* data, uint32_t length)
{
    write_callCnt ++;
    while((length > 0) && (write_length < sizeof(write_data)))
    {
        write_data[write_length] = *data;
        data ++;
        length --;
        write_length ++;
    }

    return SHELLMATTA_OK;
}

static shellmatta_retCode_t publicCmdFct(shellmatta_handle_t handle, const char *arguments, uint32_t length)
{
    (void)      handle;
    (void)      arguments;
    (void)      length;
    shellmatta_retCode_t ret = SHELLMATTA_OK;

    return ret;
}
shellmatta_cmd_t publicCmd = {(char*)"public", (char*)"p", NULL, NULL, publicCmdFct, NULL, NULL};


static shellmatta_retCode_t privateCmdFct(shellmatta_handle_t handle, const char *arguments, uint32_t length)
{
    (void)      handle;
    (void)      arguments;
    (void)      length;

    privateTemp ++;

    return SHELLMATTA_OK;
}
shellmatta_cmd_t privateCmd = {(char*)"private", (char*)"r", NULL, NULL, privateCmdFct, NULL, NULL};


static shellmatta_retCode_t additionalCmdFct(shellmatta_handle_t handle, const char *arguments, uint32_t length)
{
    (void)      handle;
    (void)      arguments;
    (void)      length;

    return SHELLMATTA_OK;
}
shellmatta_cmd_t additionalCmd = {(char*)"additional", (char*)"a", NULL, NULL, additionalCmdFct, NULL, NULL};


SCENARIO("Check help auth uninitialized") {
    GIVEN("An initialized shellmatta instance without initialized auth") {

        TEST_SHELLMATTA_SETUP;

        WHEN("The help command is called") {

            ret = shellmatta_processData(handle, (char*)"help\r", 5);
            CHECK(ret == SHELLMATTA_OK);

            THEN("The help command prints all commands.") {

                char *dummyData =   (char*) "help\r\n"
                                            "help     ?  help [command] - print help or usage information\r\n"
                                            "private  r\r\n"
                                            "public   p\r\n"
                                            "\r\n"
                                            "shellmatta->";

                CHECK(ret == SHELLMATTA_OK);
                CHECK(write_length == strlen(dummyData));
                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));
            }
        }
    }
}

SCENARIO("Check auth unauthorized") {
    GIVEN("An initialized shellmatta instance with initialized auth") {

        TEST_SHELLMATTA_SETUP;

        TEST_SHELLMATTA_AUTH_SETUP;

        WHEN("The help command is called") {

            ret = shellmatta_processData(handle, (char*)"help\r", 5);
            CHECK(ret == SHELLMATTA_OK);

            THEN("The help command prints only public commands.") {

                char *dummyData =   (char*) "help\r\n"
                                            "help    ?   help [command] - print help or usage information\r\n"
                                            "login   li  Login command\r\n"
                                            "logout  lo  Logout command\r\n"
                                            "public  p\r\n"
                                            "\r\n"
                                            "shellmatta->";

                CHECK(write_length == strlen(dummyData));
                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));
            }
        }

        WHEN("A private function is called") {

            ret = shellmatta_processData(handle, (char*)"private\r", 8);
            CHECK(ret == SHELLMATTA_OK);

            THEN("The command is not executed.") {

                char *dummyData =   (char*) "private\r\n"
                                            "\r\n"
                                            "Command: private not found\r\n"
                                            "shellmatta->";

                CHECK(privateTemp == 0u);
                CHECK(write_length == strlen(dummyData));
                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));
            }
        }

        WHEN("Autocomplete is triggered") {

            ret = shellmatta_processData(handle, (char*)"\t\t", 2);
            CHECK(ret == SHELLMATTA_OK);

            THEN("Only public commands are shown.") {

                char *dummyData =   (char*) "\r\n"
                                            "help    ?    login    li    logout    lo    public    p    \r\n"
                                            "shellmatta->";

                CHECK(write_length == strlen(dummyData));
                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));
            }
        }
    }
}

SCENARIO("Check authorized") {
    GIVEN("An initialized shellmatta instance with initialized auth") {

        TEST_SHELLMATTA_SETUP;

        TEST_SHELLMATTA_AUTH_SETUP;

        WHEN("The user shellmatta is logged in") {

            ret = shellmatta_auth_login(handle, 1);
            CHECK(ret == SHELLMATTA_OK);

            AND_WHEN("The help command is called") {

                ret = shellmatta_processData(handle, (char*)"help\r", 5);
                CHECK(ret == SHELLMATTA_OK);

                THEN("The help command prints all commands.") {

                    char *dummyData =   (char*) "help\r\n"
                                                "help     ?   help [command] - print help or usage information\r\n"
                                                "login    li  Login command\r\n"
                                                "logout   lo  Logout command\r\n"
                                                "private  r\r\n"
                                                "public   p\r\n"
                                                "\r\n"
                                                "shimatta@shellmatta->";

                    CHECK(ret == SHELLMATTA_OK);
                    CHECK(write_length == strlen(dummyData));
                    REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));

                    AND_THEN("The shimatta user is logged in") {
                        char usernameBuffer[16] = {0};
                        uint32_t usernameBufferLength = sizeof(usernameBuffer);

                        CHECK(1 == shellmatta_auth_getLoggedInUserId(handle));
                        ret = shellmatta_auth_getLoggedInUserName(handle, usernameBuffer, &usernameBufferLength);
                        CHECK(ret == SHELLMATTA_OK);
                        CHECK(usernameBufferLength == strlen("shimatta"));
                        REQUIRE_THAT(usernameBuffer, Catch::Matchers::Equals("shimatta"));
                    }
                }

                AND_WHEN("The user is logged out using the logout command") {
                    write_length = 0;
                    memset(write_data, 0, sizeof(write_data));
                    ret = shellmatta_processData(handle, (char*)"logout\r", 7);
                    CHECK(ret == SHELLMATTA_OK);

                    THEN("The Shellmatta prints the logout message") {
                        char *dummyData =   (char*) "logout\r\n"
                                                    "good bye\r\n\r\n"
                                                    "shellmatta->";
                        CHECK(write_length == strlen(dummyData));
                        REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));
                    }

                    AND_WHEN("The help command is called") {

                        write_length = 0;
                        memset(write_data, 0, sizeof(write_data));
                        ret = shellmatta_processData(handle, (char*)"help\r", 5);
                        CHECK(ret == SHELLMATTA_OK);

                        THEN("The help command prints only public commands.") {

                            char *dummyData =   (char*) "help\r\n"
                                                        "help    ?   help [command] - print help or usage information\r\n"
                                                        "login   li  Login command\r\n"
                                                        "logout  lo  Logout command\r\n"
                                                        "public  p\r\n"
                                                        "\r\n"
                                                        "shellmatta->";

                            CHECK(ret == SHELLMATTA_OK);
                            CHECK(write_length == strlen(dummyData));
                            REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));
                        }
                    }
                }
            }
            AND_WHEN("The a private function is called") {

                ret = shellmatta_processData(handle, (char*)"private\r", 8);
                CHECK(ret == SHELLMATTA_OK);

                THEN("The command executed.") {

                    char *dummyData =   (char*) "private\r\n"
                                                "\r\n"
                                                "shimatta@shellmatta->";

                    CHECK(privateTemp == 1u);
                    CHECK(write_length == strlen(dummyData));
                    REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));
                }
            }
        }
        WHEN("The user not_shellmatta is logged in") {

            ret = shellmatta_auth_login(handle, 2);
            CHECK(ret == SHELLMATTA_OK);

            AND_WHEN("The help command is called") {

                ret = shellmatta_processData(handle, (char*)"help\r", 5);
                CHECK(ret == SHELLMATTA_OK);

                THEN("The help command prints not all commands.") {

                    char *dummyData =   (char*) "help\r\n"
                                                "help    ?   help [command] - print help or usage information\r\n"
                                                "login   li  Login command\r\n"
                                                "logout  lo  Logout command\r\n"
                                                "public  p\r\n"
                                                "\r\n"
                                                "not_shimatta@shellmatta->";

                    CHECK(ret == SHELLMATTA_OK);
                    CHECK(write_length == strlen(dummyData));
                    REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));

                    AND_THEN("The not_shimatta user is logged in") {
                        char usernameBuffer[16] = {0};
                        uint32_t usernameBufferLength = sizeof(usernameBuffer);

                        CHECK(2 == shellmatta_auth_getLoggedInUserId(handle));
                        ret = shellmatta_auth_getLoggedInUserName(handle, usernameBuffer, &usernameBufferLength);
                        CHECK(ret == SHELLMATTA_OK);
                        CHECK(usernameBufferLength == strlen("not_shimatta"));
                        REQUIRE_THAT(usernameBuffer, Catch::Matchers::Equals("not_shimatta"));
                    }
                }
            }
            AND_WHEN("The a private function is called") {

                ret = shellmatta_processData(handle, (char*)"private\r", 8);
                CHECK(ret == SHELLMATTA_OK);

                THEN("The command is not executed.") {

                    char *dummyData =   (char*) "private\r\n"
                                                "\r\n"
                                                "Command: private not found\r\n"
                                                "not_shimatta@shellmatta->";

                    CHECK(privateTemp == 0u);
                    CHECK(write_length == strlen(dummyData));
                    REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));
                }
            }
        }
        WHEN("The user root is logged in") {
            ret = shellmatta_auth_login(handle, 3);
            CHECK(ret == SHELLMATTA_OK);

            AND_WHEN("The help command is called") {

                ret = shellmatta_processData(handle, (char*)"help\r", 5);
                CHECK(ret == SHELLMATTA_OK);

                THEN("The help command prints all commands.") {

                    char *dummyData =   (char*) "help\r\n"
                                                "help     ?   help [command] - print help or usage information\r\n"
                                                "login    li  Login command\r\n"
                                                "logout   lo  Logout command\r\n"
                                                "private  r\r\n"
                                                "public   p\r\n"
                                                "\r\n"
                                                "root@shellmatta->";

                    CHECK(ret == SHELLMATTA_OK);
                    CHECK(write_length == strlen(dummyData));
                    REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));
                }
            }
        }
    }
}

SCENARIO("Check login command with privileged user") {
    GIVEN("An initialized shellmatta instance with initialized auth") {

        TEST_SHELLMATTA_SETUP;

        TEST_SHELLMATTA_AUTH_SETUP;

        WHEN("The user shellmatta logs in interactively using the correct credentials") {

            ret = shellmatta_processData(handle, (char*)"login\r\n"
                                                        "shimatta\r\n"
                                                        "12345678\r", 26);
            CHECK(ret == SHELLMATTA_OK);

            THEN("The login message is printed - password is hidden") {
                char *dummyData =   (char*) "login\r\n"
                                            "enter username:\r\n"
                                            "shimatta\r\n"
                                            "enter password:\r\n"
                                            "\r\n"
                                            "login successful\r\n"
                                            "\r\n"
                                            "shimatta@shellmatta->";
                CHECK(write_length == strlen(dummyData));
                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));

                AND_THEN("The shimatta user is logged in") {
                    REQUIRE(1 == shellmatta_auth_getLoggedInUserId(handle));
                }
            }
        }

        WHEN("The user shellmatta logs in interactively using wrong credentials") {

            ret = shellmatta_processData(handle, (char*)"login\r\n"
                                                        "shimatta\r\n"
                                                        "11111111\r", 26);
            CHECK(ret == SHELLMATTA_OK);

            THEN("A warning message is printed") {
                char *dummyData =   (char*) "login\r\n"
                                            "enter username:\r\n"
                                            "shimatta\r\n"
                                            "enter password:\r\n"
                                            "\r\n"
                                            "username or password is wrong\r\n"
                                            "\r\n"
                                            "shellmatta->";
                CHECK(write_length == strlen(dummyData));
                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));

                AND_THEN("The shimatta user is not logged in") {
                    REQUIRE(0 == shellmatta_auth_getLoggedInUserId(handle));
                }
            }
        }

        WHEN("The user shellmatta logs in interactively manipulating the input") {

            ret = shellmatta_processData(handle, (char*)"login\r"
                                                        "shimg\batta\r"
                                                        "1h" "\x7f" "2346\033[D5\033[C78\b8\r", 36);
            CHECK(ret == SHELLMATTA_OK);

            THEN("The login message is printed - password is hidden") {
                char *dummyData =   (char*) "login\r\n"
                                            "enter username:\r\n"
                                            "shimg\033[1D\033[K\033[s\033[uatta\r\n"
                                            "enter password:\r\n"
                                            "\r\n"
                                            "login successful\r\n"
                                            "\r\n"
                                            "shimatta@shellmatta->";
                CHECK(write_length == strlen(dummyData));
                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));

                AND_THEN("The shimatta user is logged in") {
                    REQUIRE(1 == shellmatta_auth_getLoggedInUserId(handle));
                }
            }
        }

        WHEN("The user shellmatta logs in passing the credentials none interactive") {

            ret = shellmatta_processData(handle, (char*)"login -u shimatta -p 12345678\r", 30);
            CHECK(ret == SHELLMATTA_OK);

            THEN("The login message is printed") {
                char *dummyData =   (char*) "login -u shimatta -p 12345678\r\n"
                                            "login successful\r\n"
                                            "\r\n"
                                            "shimatta@shellmatta->";
                CHECK(write_length == strlen(dummyData));
                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));

                AND_THEN("The shimatta user is logged in") {
                    REQUIRE(1 == shellmatta_auth_getLoggedInUserId(handle));
                }
            }
        }

        WHEN("The user shellmatta logs in passing the credentials half interactive") {

            ret = shellmatta_processData(handle, (char*)"login -u shimatta\r12345678\r", 27);
            CHECK(ret == SHELLMATTA_OK);

            THEN("The login message is printed - password is hidden") {
                char *dummyData =   (char*) "login -u shimatta\r\n\r\n"
                                            "enter password:\r\n"
                                            "\r\n"
                                            "login successful\r\n"
                                            "\r\n"
                                            "shimatta@shellmatta->";
                CHECK(write_length == strlen(dummyData));
                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));

                AND_THEN("The shimatta user is logged in") {
                    REQUIRE(1 == shellmatta_auth_getLoggedInUserId(handle));
                }
            }
        }

        WHEN("The user shellmatta tries to login non interactive without username") {

            ret = shellmatta_processData(handle, (char*)"login -p 12345678\r", 18);
            CHECK(ret == SHELLMATTA_OK);

            THEN("A warning message is printed") {
                char *dummyData =   (char*) "login -p 12345678\r\n"
                                            "Missing username\r\n"
                                            "\r\n"
                                            "shellmatta->";
                CHECK(write_length == strlen(dummyData));
                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));

                AND_THEN("The shimatta user is not logged in") {
                    REQUIRE(0 == shellmatta_auth_getLoggedInUserId(handle));
                }
            }
        }

        WHEN("The user shellmatta tries to login using the wrong options") {

            ret = shellmatta_processData(handle, (char*)"login -o meow\r", 14);
            CHECK(ret == SHELLMATTA_OK);

            THEN("A warning message is printed") {
                char *dummyData =   (char*) "login -o meow\r\n"
                                            "Unknown option\r\n"
                                            "\r\n"
                                            "shellmatta->";
                CHECK(write_length == strlen(dummyData));
                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));

                AND_THEN("The shimatta user is not logged in") {
                    REQUIRE(0 == shellmatta_auth_getLoggedInUserId(handle));
                }
            }
        }
    }
}

SCENARIO("Check login command with unprivileged user") {
    GIVEN("An initialized shellmatta instance with initialized auth") {

        TEST_SHELLMATTA_SETUP;

        TEST_SHELLMATTA_AUTH_SETUP;

        WHEN("The user not_shimatta logs in interactively using the correct credentials") {

            ret = shellmatta_processData(handle, (char*)"login\r"
                                                        "not_shimatta\r"
                                                        "87654321\r", 28);
            CHECK(ret == SHELLMATTA_OK);

            THEN("The login message is printed - password is hidden") {
                char *dummyData =   (char*) "login\r\n"
                                            "enter username:\r\n"
                                            "not_shimatta\r\n"
                                            "enter password:\r\n"
                                            "\r\n"
                                            "login successful\r\n"
                                            "\r\n"
                                            "not_shimatta@shellmatta->";
                CHECK(write_length == strlen(dummyData));
                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));

                AND_THEN("The not_shimatta user is logged in") {
                    REQUIRE(2 == shellmatta_auth_getLoggedInUserId(handle));
                }
            }
        }
    }
}

SCENARIO("Check adding commands after the authentication is initialized") {
    GIVEN("An initialized shellmatta instance with initialized auth") {

        TEST_SHELLMATTA_SETUP;

        TEST_SHELLMATTA_AUTH_SETUP;

        WHEN("A command is added") {

            ret = shellmatta_addCmd(handle, &additionalCmd);
            CHECK(ret == SHELLMATTA_OK);

            AND_WHEN("The help command is called") {

                ret = shellmatta_processData(handle, (char*)"help\r", 5);
                CHECK(ret == SHELLMATTA_OK);

                THEN("The additional command is not shown as it requires login") {
                    char *dummyData =   (char*) "help\r\n"
                                                "help    ?   help [command] - print help or usage information\r\n"
                                                "login   li  Login command\r\n"
                                                "logout  lo  Logout command\r\n"
                                                "public  p\r\n"
                                                "\r\n"
                                                "shellmatta->";
                    CHECK(write_length == strlen(dummyData));
                    REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));

                    AND_WHEN("The rot user is logged in") {
                        write_length = 0;
                        memset(write_data, 0, sizeof(write_data));

                        ret = shellmatta_auth_login(handle, 3);
                        CHECK(ret == SHELLMATTA_OK);

                        AND_WHEN("The help command is called") {

                            ret = shellmatta_processData(handle, (char*)"help\r", 5);
                            CHECK(ret == SHELLMATTA_OK);

                            THEN("all commands are shown") {
                                char *dummyData =   (char*) "help\r\n"
                                                            "additional  a\r\n"
                                                            "help        ?   help [command] - print help or usage information\r\n"
                                                            "login       li  Login command\r\n"
                                                            "logout      lo  Logout command\r\n"
                                                            "private     r\r\n"
                                                            "public      p\r\n"
                                                            "\r\n"
                                                            "root@shellmatta->";
                                CHECK(write_length == strlen(dummyData));
                                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));
                            }
                        }
                    }
                }
            }
        }
    }
}

shellmatta_retCode_t customLogin(const uint32_t userId, const char *password)
{
    if ((userId == 1) && (0 == strcmp(password, "12345678")))
    {
        return SHELLMATTA_OK;
    }
    else if ((userId == 2) && (0 == strcmp(password, "87654321")))
    {
        return SHELLMATTA_OK;
    }

    return SHELLMATTA_ERROR;
}

void logFct(const uint32_t userId, bool success)
{
    userIdTemp = userId;
    successTemp = success;
}

SCENARIO("Check custom login") {
    GIVEN("An initialized shellmatta instance with initialized auth with custom login and log") {

        TEST_SHELLMATTA_SETUP;

        shellmatta_auth_user_t userList[] = {
            {1, false, "shimatta", "12345678"},
            {2, false, "not_shimatta", "87654321"}
        };

        uint32_t privateCmdPerms[] = {1};
        shellmatta_auth_perm_t permList[] = {
            {"private", privateCmdPerms, sizeof(privateCmdPerms)/sizeof(privateCmdPerms[0])}
        };

        shellmatta_auth_init(handle, userList, 2, permList, 1, false, customLogin, logFct);

        WHEN("The user shimatta logs in interactively using the correct credentials") {

            ret = shellmatta_processData(handle, (char*)"login\r"
                                                        "shimatta\r"
                                                        "12345678\r", 24);
            CHECK(ret == SHELLMATTA_OK);

            THEN("The login message is printed - password is hidden") {
                char *dummyData =   (char*) "login\r\n"
                                            "enter username:\r\n"
                                            "shimatta\r\n"
                                            "enter password:\r\n"
                                            "\r\n"
                                            "login successful\r\n"
                                            "\r\n"
                                            "shimatta@shellmatta->";

                CHECK(write_length == strlen(dummyData));
                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));

                AND_THEN("The shimatta user is logged in") {
                    REQUIRE(1 == shellmatta_auth_getLoggedInUserId(handle));
                }

                AND_THEN("The login event is logged") {
                    CHECK(1 == userIdTemp);
                    REQUIRE(true == successTemp);
                }
            }
        }

        WHEN("The user not_shimatta logs in interactively using the wrong credentials") {

            ret = shellmatta_processData(handle, (char*)"login\r"
                                                        "shimatta\r"
                                                        "12345679\r", 24);
            CHECK(ret == SHELLMATTA_OK);

            THEN("Login error message is printed") {
                char *dummyData =   (char*) "login\r\n"
                                            "enter username:\r\n"
                                            "shimatta\r\n"
                                            "enter password:\r\n"
                                            "\r\n"
                                            "username or password is wrong\r\n"
                                            "\r\n"
                                            "shellmatta->";

                CHECK(write_length == strlen(dummyData));
                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));

                AND_THEN("The shimatta user is not logged in") {
                    REQUIRE(0 == shellmatta_auth_getLoggedInUserId(handle));
                }

                AND_THEN("The failed login event is logged") {
                    CHECK(1 == userIdTemp);
                    REQUIRE(false == successTemp);
                }
            }
        }
    }
}

SCENARIO("Check custom login with custom login function") {
    GIVEN("An initialized shellmatta instance with initialized auth with custom login and log") {

        TEST_SHELLMATTA_SETUP;

        shellmatta_auth_user_t userList[] = {
            {1, false, "shimatta", "12345678"},
            {2, false, "not_shimatta", "87654321"}
        };

        uint32_t privateCmdPerms[] = {1};
        shellmatta_auth_perm_t permList[] = {
            {"private", privateCmdPerms, sizeof(privateCmdPerms)/sizeof(privateCmdPerms[0])}
        };

        shellmatta_auth_init(handle, userList, 2, permList, 1, true, customLogin, logFct);

        WHEN("The help command is called") {

            ret = shellmatta_processData(handle, (char*)"help\r", 5);
            CHECK(ret == SHELLMATTA_OK);

            THEN("There is no login command") {
                char *dummyData =   (char*) "help\r\n"
                                            "help    ?   help [command] - print help or usage information\r\n"
                                            "logout  lo  Logout command\r\n"
                                            "public  p\r\n"
                                            "\r\n"
                                            "shellmatta->";

                CHECK(write_length == strlen(dummyData));
                REQUIRE_THAT(write_data, Catch::Matchers::Equals(dummyData));
            }
        }
    }
}

SCENARIO("Check if passwords can be changed") {
    GIVEN("An initialized shellmatta instance with initialized auth") {

        TEST_SHELLMATTA_SETUP;

        TEST_SHELLMATTA_AUTH_SETUP;

        WHEN("The password of the shellmatta user is changed") {

            ret = shellmatta_auth_chpasswd(handle, "shimatta", "new_password");
            CHECK(ret == SHELLMATTA_OK);

            AND_WHEN("The user shellmatta logs in passing the new credentials") {

                ret = shellmatta_processData(handle, (char*)"login -u shimatta -p new_password\r", 34);
                CHECK(ret == SHELLMATTA_OK);

                THEN("The shimatta user is logged in") {
                    REQUIRE(1 == shellmatta_auth_getLoggedInUserId(handle));
                }

            }

            AND_WHEN("The user shellmatta logs in passing the old credentials") {

                ret = shellmatta_processData(handle, (char*)"login -u shimatta -p 12345678\r", 30);
                CHECK(ret == SHELLMATTA_OK);

                THEN("The shimatta user is not logged in") {
                    REQUIRE(0 == shellmatta_auth_getLoggedInUserId(handle));
                }
            }
        }
    }
}

SCENARIO("User functions with wrong parameters") {
    GIVEN("An initialized shellmatta instance with initialized auth") {

        TEST_SHELLMATTA_SETUP;

        TEST_SHELLMATTA_AUTH_SETUP;

        WHEN("Trying to log in user 0") {

            ret = shellmatta_auth_login(handle, 0);

            THEN("Shellmatta returns SHELLMATTA_ERROR") {
                CHECK(ret == SHELLMATTA_ERROR);
                AND_THEN("No user is logged in") {
                    REQUIRE(0 == shellmatta_auth_getLoggedInUserId(handle));
                }
            }
        }
    }
}