Obtaining the Bucket Encryption Configuration (SDK for C)

#include "eSDKOBS.h"
#include <stdio.h>
#include <string.h>
obs_status response_properties_callback(const obs_response_properties *properties, void *callback_data);
void response_complete_callback(obs_status status, const obs_error_details *error, void *callback_data);
obs_status get_encryption_callback(obs_server_side_encryption_configuration *encryption_config, void *callback_data);
typedef struct EncryptionInfo
{
    char sse_algorithm[64];
    char kms_master_key_id[256];
    obs_status ret_status;
} EncryptionInfo;
int main()
{
    obs_initialize(OBS_INIT_ALL);
    obs_options options;
    init_obs_options(&options);
    // Enter the endpoint corresponding to the bucket for host_name. CN-Hong Kong is used here as an example. Replace it with the one currently in use.
    options.bucket_options.host_name = "obs.ap-southeast-1.myhuaweicloud.com";
    // Hard-coded or plaintext AK and SK are risky. For security purposes, encrypt your AK and SK and store them in the configuration file or environment variables.
    // In this example, the AK and SK are stored in environment variables for identity authentication. Before running the code in this example, configure local environment variables ACCESS_KEY_ID and SECRET_ACCESS_KEY.
    options.bucket_options.access_key = getenv("ACCESS_KEY_ID");
    options.bucket_options.secret_access_key = getenv("SECRET_ACCESS_KEY");
    options.bucket_options.bucket_name = "example-bucket-name";
    obs_response_handler response_handler = {&response_properties_callback, &response_complete_callback};
    obs_get_bucket_encryption_handler get_encryption_handler = {
        response_handler,
        &get_encryption_callback
    };
    EncryptionInfo encryption_info = {0};
    encryption_info.ret_status = OBS_STATUS_BUTT;
    get_bucket_encryption(&options, &get_encryption_handler, &encryption_info);
    if (OBS_STATUS_OK == encryption_info.ret_status) {
        printf("get bucket encryption successfully. sse_algorithm: %s\n", encryption_info.sse_algorithm);
        if (encryption_info.kms_master_key_id[0]) {
            printf("kms_master_key_id: %s\n", encryption_info.kms_master_key_id);
        }
    } else {
        printf("get bucket encryption failed(%s).\n", obs_get_status_name(encryption_info.ret_status));
    }
    obs_deinitialize();
}
obs_status get_encryption_callback(obs_server_side_encryption_configuration *encryption_config, void *callback_data)
{
    EncryptionInfo *info = (EncryptionInfo *)callback_data;
    if (encryption_config && encryption_config->rule) {
        if (encryption_config->rule->sse_algorithm) {
            strncpy(info->sse_algorithm, encryption_config->rule->sse_algorithm, sizeof(info->sse_algorithm) - 1);
            info->sse_algorithm[sizeof(info->sse_algorithm) - 1] = '\0';
        }
        if (encryption_config->rule->kms_master_key_id) {
            strncpy(info->kms_master_key_id, encryption_config->rule->kms_master_key_id, sizeof(info->kms_master_key_id) - 1);
            info->kms_master_key_id[sizeof(info->kms_master_key_id) - 1] = '\0';
        }
    }
    return OBS_STATUS_OK;
}
obs_status response_properties_callback(const obs_response_properties *properties, void *callback_data)
{
    (void)properties; (void)callback_data;
    return OBS_STATUS_OK;
}
void response_complete_callback(obs_status status, const obs_error_details *error, void *callback_data)
{
    if (callback_data) { ((EncryptionInfo*)callback_data)->ret_status = status; }
    if (error && error->message) { printf("Error: %s\n", error->message); }
}