CK_RV find_by_attr()

in src/find_objects/find_objects.c [34:85]

• 43 lines of code
• 11 McCabe index (conditional complexity)

CK_RV find_by_attr(CK_SESSION_HANDLE hSession, CK_ATTRIBUTE *template, CK_ULONG attr_count, CK_ULONG *count,
                   CK_OBJECT_HANDLE_PTR *hObject) {
    CK_RV rv;

    if (NULL == hObject || NULL == template || NULL == count) {
        return CKR_ARGUMENTS_BAD;
    }

    rv = funcs->C_FindObjectsInit(hSession, template, attr_count);
    if (rv != CKR_OK) {
        fprintf(stderr, "Can't initialize search\n");
        return rv;
    }

    CK_ULONG max_objects = 25;
    bool searching = 1;
    *count = 0;
    while (searching) {
        CK_ULONG found = 0;
        *hObject = realloc(*hObject, (*count + max_objects) * sizeof(CK_OBJECT_HANDLE));
        if (NULL == *hObject) {
            fprintf(stderr, "Could not allocate memory for objects\n");
            return CKR_HOST_MEMORY;
        }

        CK_OBJECT_HANDLE_PTR loc = *hObject;
        rv = funcs->C_FindObjects(hSession, &loc[*count], max_objects, &found);
        if (rv != CKR_OK) {
            fprintf(stderr, "Can't run search\n");
            funcs->C_FindObjectsFinal(hSession);
            return rv;
        }

        (*count) += found;

        if (0 == found)
            searching = 0;
    }

    rv = funcs->C_FindObjectsFinal(hSession);
    if (rv != CKR_OK) {
        fprintf(stderr, "Can't finalize search\n");
        return rv;
    }

    if (0 == *count) {
        fprintf(stderr, "Didn't find requested key\n");
        return rv;
    }

    return CKR_OK;
}