C アプリに端末固定のライセンス認証を実装する方法

& ([scriptblock]::Create((Invoke-WebRequest 'https://www.licentivo.com/assets/sdk/releases/v0.11.6/install.ps1').Content)) -Language c -Toolchain msvc

curl --fail --silent --show-error --location --proto '=https' --proto-redir '=https' 'https://www.licentivo.com/assets/sdk/releases/v0.11.6/install.sh' | bash -s -- c

cmake_minimum_required(VERSION 3.18)
project(licensed_app LANGUAGES C)
find_package(Licentivo 0.11.6 REQUIRED)
add_executable(licensed_app app.c)
target_link_libraries(licensed_app PRIVATE Licentivo::C)
set_target_properties(licensed_app PROPERTIES C_STANDARD 11 C_STANDARD_REQUIRED ON)

cmake -S . -B build -G "Visual Studio 17 2022" -A x64 -DCMAKE_PREFIX_PATH="SDK_PREFIX" -DCURL_DIR="CURL_DIR"
if ($LASTEXITCODE -ne 0) { throw 'CMake configure failed. Check the SDK prefix and matching libcurl development package.' }
cmake --build build --config Release --target licensed_app
if ($LASTEXITCODE -ne 0) { throw 'Build failed.' }

set -e
cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="SDK_PREFIX"
cmake --build build --target licensed_app

#include "licentivo.h"
#include <stdio.h>
#include <stdlib.h>

/* BEGIN LICENTIVO PRODUCT */
/* Copy Product ID and all key ID/public key pairs from Console > Products > Signing public keys. */
static const char *PRODUCT_ID = "YOUR_PRODUCT_ID";
static const char *TRUSTED_KEYS_JSON = "{\"YOUR_KEY_ID\":\"YOUR_PUBLIC_KEY\"}";
/* END LICENTIVO PRODUCT */

static const char *setting(const char *name, const char *fallback) {
    const char *value = getenv(name);
    return value && value[0] ? value : fallback;
}

static int export_report(void *context) {
    const char *path = (const char *)context;
    /* Replace this write with your existing, non-metered export operation. */
    FILE *file = fopen(path, "w");
    if (!file) { perror("Export write failed"); return 0; }
    int wrote = fputs("A report generated by the licensed application.\n", file) >= 0;
    int closed = fclose(file) == 0;
    return wrote && closed;
}

int main(void) {
    /* Keep the handle to report startup errors. A GUI supplies the activation input. */
    ln_client *client = ln_init_product(PRODUCT_ID, TRUSTED_KEYS_JSON, setting("LICENTIVO_LICENSE_KEY", ""));
    if (!client) {
        fputs("Startup failed: check the product ID and public keys and supply a license key for first activation.\n", stderr);
        return 2;
    }
    if (!ln_start(client)) {
        fprintf(stderr, "Startup failed: %s\n", ln_last_error(client));
        ln_destroy(client);
        return 2;
    }
    const char *feature = setting("LICENTIVO_FEATURE", "export");
    const char *path = setting("LICENTIVO_OUTPUT", "licensed-report.txt");
    int ok = setting("LICENTIVO_METERED", "")[0] == '1'
        ? ln_run_metered_feature(client, feature, 1, setting("LICENTIVO_OPERATION_ID", ""), export_report, (void *)path)
        : ln_run_feature(client, feature, export_report, (void *)path);
    if (!ok) {
        char *status = ln_feature_status(client, feature);
        fprintf(stderr, "Export denied or failed: %s; %s\n", status ? status : "status unavailable", ln_last_error(client));
        ln_free_string(status);
    }
    if (ok) printf("License OK: %s is available\nExport completed: %s\n", feature, path);
    ln_destroy(client); /* Real app: destroy on shutdown; no Deactivate on normal exit. */
    return ok ? 0 : 2;
}

$env:LICENTIVO_LICENSE_KEY = 'YOUR_TEST_LICENSE_KEY'
./build/Release/licensed_app.exe
Remove-Item Env:LICENTIVO_LICENSE_KEY
./build/Release/licensed_app.exe

LICENTIVO_LICENSE_KEY=YOUR_TEST_LICENSE_KEY ./build/licensed_app
unset LICENTIVO_LICENSE_KEY
./build/licensed_app