tld.h

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/* TLD library -- TLD, domain name, and sub-domain extraction
 * Copyright (c) 2011-2025  Made to Order Software Corp.  All Rights Reserved
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#ifndef LIB_TLD_H
#define LIB_TLD_H
#if ( defined(LIBTLD_DLL) || defined(_WINDLL) ) && ( defined(_WINDOWS) || defined(WINDOWS) )
#ifdef tld_EXPORTS
#define LIBTLD_EXPORT __declspec(dllexport)
#else
#define LIBTLD_EXPORT __declspec(dllimport)
#endif
#else
#define LIBTLD_EXPORT
#endif
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define LIBTLD_VERSION_MAJOR    2
#define LIBTLD_VERSION_MINOR    0
#define LIBTLD_VERSION_PATCH    14
#define LIBTLD_VERSION          "2.0.14"
 
enum tld_category
{
    TLD_CATEGORY_INTERNATIONAL,
    TLD_CATEGORY_PROFESSIONALS,
    TLD_CATEGORY_LANGUAGE,
    TLD_CATEGORY_GROUP,
    TLD_CATEGORY_REGION,
    TLD_CATEGORY_TECHNICAL,
    TLD_CATEGORY_COUNTRY,   // TODO: remove: TLD_CATEGORY_LOCATION + TLD_REGION_COUNTRY 
    TLD_CATEGORY_LOCATION,
    TLD_CATEGORY_ENTREPRENEURIAL,
    TLD_CATEGORY_BRAND,
    TLD_CATEGORY_CONTACT,
    TLD_CATEGORY_UNDEFINED
};
 
enum tld_status
{
    TLD_STATUS_VALID,
    TLD_STATUS_PROPOSED,
    TLD_STATUS_DEPRECATED,
    TLD_STATUS_UNUSED,
    TLD_STATUS_RESERVED,
    TLD_STATUS_INFRASTRUCTURE,
    TLD_STATUS_EXAMPLE,
    TLD_STATUS_UNDEFINED,
 
    /* The following status is returned when the 2nd level domain names
     * were not used for some top domain names that now required a 2nd level.
     * For example, the UK had parliament.uk as an exception. Since the
     * UK now allows .uk to be used directly, those exceptions are gone.
     *
     * In other words, that entry is NOT a TLD. It is an actual website
     * URI.
     */
    TLD_STATUS_EXCEPTION = 100
};
 
enum tld_result
{
    TLD_RESULT_SUCCESS,
    TLD_RESULT_INVALID,   /* TLD not acceptable (reserved, deprecated, etc.) */
    TLD_RESULT_NULL,      /* URI is a NULL pointer */
    TLD_RESULT_NO_TLD,    /* no '.' in the URI */
    TLD_RESULT_BAD_URI,   /* URI includes two '.' one after another or some other problem */
    TLD_RESULT_NOT_FOUND
};
 
struct tld_info
{
    enum tld_category   f_category;
    enum tld_status     f_status;
    char                f_country[48];  /* current longest is "South Georgia and the South Sandwich Islands" */
    const char *        f_tld; /* pointer within your URI string */
    int                 f_offset;
    int                 f_tld_index;
};
 
struct tld_tag_definition
{
    const char *        f_name;
    int                 f_name_length;
    const char *        f_value;
    int                 f_value_length;
};
 
struct tld_enumeration_state
{
    int                 f_depth;
    int                 f_offset[10];
    char                f_domain[64];   /* TODO: max. size needs to be verified */
};
 
#define VALID_URI_ASCII_ONLY  0x0001
#define VALID_URI_NO_SPACES   0x0002
 
/* defined in tld_file.h */
struct tld_file;
 
extern LIBTLD_EXPORT const char *tld_version();
 
 
extern LIBTLD_EXPORT void                       tld_clear_info(struct tld_info * info);
extern LIBTLD_EXPORT enum tld_result            tld(const char *uri, struct tld_info * info);
extern LIBTLD_EXPORT enum tld_result            tld_load_tlds(const char *filename, int fallback);
extern LIBTLD_EXPORT const struct tld_file *    tld_get_tlds();
extern LIBTLD_EXPORT void                       tld_free_tlds();
extern LIBTLD_EXPORT enum tld_result            tld_next_tld(struct tld_enumeration_state * state, struct tld_info * info);
extern LIBTLD_EXPORT enum tld_result            tld_check_uri(const char * uri, struct tld_info * info, const char *protocols, int flags);
extern LIBTLD_EXPORT char *                     tld_domain_to_lowercase(const char *domain);
extern LIBTLD_EXPORT int                        tld_tag_count(struct tld_info * info);
extern LIBTLD_EXPORT enum tld_result            tld_get_tag(struct tld_info * info, int tag_idx, struct tld_tag_definition * tag);
extern LIBTLD_EXPORT const char *               tld_status_to_string(enum tld_status status);
extern LIBTLD_EXPORT enum tld_category          tld_word_to_category(const char *word, int n);
 
 
 
struct tld_email
{
    const char *        f_group;
    const char *        f_original_email;
    const char *        f_fullname;
    const char *        f_username;
    const char *        f_domain;
    const char *        f_email_only;
    const char *        f_canonicalized_email;
};
 
enum tld_email_field_type
{
    TLD_EMAIL_FIELD_TYPE_INVALID = -1,
    TLD_EMAIL_FIELD_TYPE_UNKNOWN,
    TLD_EMAIL_FIELD_TYPE_MAILBOX_LIST,
    TLD_EMAIL_FIELD_TYPE_MAILBOX,
    TLD_EMAIL_FIELD_TYPE_ADDRESS_LIST,
    TLD_EMAIL_FIELD_TYPE_ADDRESS_LIST_OPT
};
 
struct tld_email_list;
 
extern LIBTLD_EXPORT struct tld_email_list *tld_email_alloc();
extern LIBTLD_EXPORT void tld_email_free(struct tld_email_list *list);
extern LIBTLD_EXPORT enum tld_result tld_email_parse(struct tld_email_list *list, const char *emails, int flags);
extern LIBTLD_EXPORT int tld_email_count(struct tld_email_list *list);
extern LIBTLD_EXPORT void tld_email_rewind(struct tld_email_list *list);
extern LIBTLD_EXPORT int tld_email_next(struct tld_email_list *list, struct tld_email *e);
 
 
#ifdef __cplusplus
}
#endif
 
#ifdef __cplusplus
/* For C++ users */
#include    <string>
#include    <vector>
#include    <stdexcept>
 
 
struct invalid_domain : public std::runtime_error
{
    invalid_domain(const char *what_str = "this tld object is not currently valid") : runtime_error(what_str) {}
};
 
 
class LIBTLD_EXPORT tld_object
{
public:
    tld_object(const char *domain_name = NULL);
    tld_object(const std::string& domain_name);
    void set_domain(const char *domain_name);
    void set_domain(const std::string& domain_name);
    tld_result result() const;
    tld_status status() const;
    bool is_valid() const;
    std::string domain() const;
    std::string sub_domains() const;
    std::string full_domain() const;
    std::string domain_only() const;
    std::string tld_only() const;
    tld_category category() const;
    std::string country() const;
private:
    std::string f_domain = std::string();
    tld_info    f_info   = tld_info();
    tld_result  f_result = TLD_RESULT_INVALID;
};
 
 
struct LIBTLD_EXPORT tld_email_list
{
public:
    struct tld_email_t
    {
        tld_result parse(const std::string& email);
        tld_result parse_group(const std::string& group);
 
        std::string         f_group               = std::string();
        std::string         f_original_email      = std::string();
        std::string         f_fullname            = std::string();
        std::string         f_username            = std::string();
        std::string         f_domain              = std::string();
        std::string         f_email_only          = std::string();
        std::string         f_canonicalized_email = std::string();
    };
    typedef std::vector<tld_email_t>      tld_email_list_t;
 
    tld_email_list();
    tld_result parse(const std::string& emails, int flags);
    static std::string quote_string(const std::string& name, char quote);
    int count() const;
    void rewind() const;
    bool next(tld_email_t& e) const;
    bool next(tld_email *e) const;
 
    static tld_email_field_type email_field_type(const std::string& name);
 
private:
    void parse_all_emails();
 
    std::string         f_input      = std::string();
    int                 f_flags      = 0;
    tld_result          f_result     = TLD_RESULT_INVALID;
    std::string         f_last_group = std::string();
    mutable int         f_pos        = 0;
    tld_email_list_t    f_email_list = tld_email_list_t();
};
#endif
/*#ifdef __cplusplus*/
 
#endif
/*#ifndef LIB_TLD_H*/
/* vim: ts=4 sw=4 et
 */