Function userconfig_source_digest

src/discover/userconfig.c:33–51

static const cbm_userconfig_t *g_userconfig = NULL;

static void userconfig_source_digest(const char *state, const void *bytes, size_t len,
                                     char out[CBM_SHA256_HEX_LEN + 1]) {
    static const char domain[] = "cbm-userconfig-source-v1";
    cbm_sha256_ctx sha;
    cbm_sha256_init(&sha);
    cbm_sha256_update(&sha, domain, sizeof(domain));
    cbm_sha256_update(&sha, state, strlen(state) + 1);
    if (bytes && len > 0) {
        cbm_sha256_update(&sha, bytes, len);
    }
    uint8_t digest[CBM_SHA256_DIGEST_LEN];
    cbm_sha256_final(&sha, digest);
    static const char hex[] = "0123456789abcdef";
    for (int i = 0; i < CBM_SHA256_DIGEST_LEN; i++) {
        out[i * 2] = hex[digest[i] >> 4];
        out[i * 2 + 1] = hex[digest[i] & 0x0f];
    }
    out[CBM_SHA256_HEX_LEN] = '\0';
}

void cbm_set_user_lang_config(const cbm_userconfig_t *cfg) {
    g_userconfig = cfg;