tld

tld

Synopsis




struct      Tld_table_element;
struct      Tld_table;
enum        Tld_rc;
const char* tld_strerror                    (Tld_rc rc);
int         tld_get_4                       (const uint32_t *in,
                                             size_t inlen,
                                             char **out);
int         tld_get_4z                      (const uint32_t *in,
                                             char **out);
int         tld_get_z                       (const char *in,
                                             char **out);
const Tld_table* tld_get_table              (const char *tld,
                                             const Tld_table **tables);
const Tld_table* tld_default_table          (const char *tld,
                                             const Tld_table **overrides);
int         tld_check_4t                    (const uint32_t *in,
                                             size_t inlen,
                                             size_t *errpos,
                                             const Tld_table *tld);
int         tld_check_4tz                   (const uint32_t *in,
                                             size_t *errpos,
                                             const Tld_table *tld);
int         tld_check_4                     (const uint32_t *in,
                                             size_t inlen,
                                             size_t *errpos,
                                             const Tld_table **overrides);
int         tld_check_4z                    (const uint32_t *in,
                                             size_t *errpos,
                                             const Tld_table **overrides);
int         tld_check_8z                    (const char *in,
                                             size_t *errpos,
                                             const Tld_table **overrides);
int         tld_check_lz                    (const char *in,
                                             size_t *errpos,
                                             const Tld_table **overrides);

Description

Details

struct Tld_table_element

struct Tld_table_element {
    uint32_t start;		/* Start of range. */
    uint32_t end;		/* End of range, end == start if single. */
};

struct Tld_table

struct Tld_table {
    const char *name;		/* TLD name, e.g., "no". */
    const char *version;	/* Version string from TLD file. */
    size_t nvalid;		/* Number of entries in data. */
    const Tld_table_element *valid;	/* Sorted array of valid code points. */
};

enum Tld_rc

  typedef enum
  {
    TLD_SUCCESS = 0,
    TLD_INVALID = 1,		/* Invalid character found. */
    TLD_NODATA = 2,		/* Char, domain or inlen = 0. */
    TLD_MALLOC_ERROR = 3,
    TLD_ICONV_ERROR = 4,
    TLD_NO_TLD = 5,
    /* Workaround typo in earlier versions. */
    TLD_NOTLD = TLD_NO_TLD
  } Tld_rc;

Enumerated return codes of the TLD checking functions. The value 0 is guaranteed to always correspond to success.

TLD_SUCCESS Successful operation. This value is guaranteed to always be zero, the remaining ones are only guaranteed to hold non-zero values, for logical comparison purposes.
TLD_INVALID Invalid character found.
TLD_NODATA No input data was provided.
TLD_MALLOC_ERROR Error during memory allocation.
TLD_ICONV_ERROR Error during iconv string conversion.
TLD_NO_TLD No top-level domain found in domain string.
TLD_NOTLD

tld_strerror ()

const char* tld_strerror                    (Tld_rc rc);

Convert a return code integer to a text string. This string can be used to output a diagnostic message to the user.

TLD_SUCCESS: Successful operation. This value is guaranteed to always be zero, the remaining ones are only guaranteed to hold non-zero values, for logical comparison purposes. TLD_INVALID: Invalid character found. TLD_NODATA: No input data was provided. TLD_MALLOC_ERROR: Error during memory allocation. TLD_ICONV_ERROR: Error during iconv string conversion. TLD_NO_TLD: No top-level domain found in domain string.

rc : tld return code
Returns : Returns a pointer to a statically allocated string containing a description of the error with the return code rc.

tld_get_4 ()

int         tld_get_4                       (const uint32_t *in,
                                             size_t inlen,
                                             char **out);

Isolate the top-level domain of in and return it as an ASCII string in out.

in : Array of unicode code points to process. Does not need to be zero terminated.
inlen : Number of unicode code points.
out : Zero terminated ascii result string pointer.
Returns : Return TLD_SUCCESS on success, or the corresponding Tld_rc error code otherwise.

tld_get_4z ()

int         tld_get_4z                      (const uint32_t *in,
                                             char **out);

Isolate the top-level domain of in and return it as an ASCII string in out.

in : Zero terminated array of unicode code points to process.
out : Zero terminated ascii result string pointer.
Returns : Return TLD_SUCCESS on success, or the corresponding Tld_rc error code otherwise.

tld_get_z ()

int         tld_get_z                       (const char *in,
                                             char **out);

Isolate the top-level domain of in and return it as an ASCII string in out. The input string in may be UTF-8, ISO-8859-1 or any ASCII compatible character encoding.

in : Zero terminated character array to process.
out : Zero terminated ascii result string pointer.
Returns : Return TLD_SUCCESS on success, or the corresponding Tld_rc error code otherwise.

tld_get_table ()

const Tld_table* tld_get_table              (const char *tld,
                                             const Tld_table **tables);

Get the TLD table for a named TLD by searching through the given TLD table array.

tld : TLD name (e.g. "com") as zero terminated ASCII byte string.
tables : Zero terminated array of Tld_table info-structures for TLDs.
Returns : Return structure corresponding to TLD tld by going thru tables, or return NULL if no such structure is found.

tld_default_table ()

const Tld_table* tld_default_table          (const char *tld,
                                             const Tld_table **overrides);

Get the TLD table for a named TLD, using the internal defaults, possibly overrided by the (optional) supplied tables.

tld : TLD name (e.g. "com") as zero terminated ASCII byte string.
overrides : Additional zero terminated array of Tld_table info-structures for TLDs, or NULL to only use library deault tables.
Returns : Return structure corresponding to TLD tld_str, first looking through overrides then thru built-in list, or NULL if no such structure found.

tld_check_4t ()

int         tld_check_4t                    (const uint32_t *in,
                                             size_t inlen,
                                             size_t *errpos,
                                             const Tld_table *tld);

Test each of the code points in in for whether or not they are allowed by the data structure in tld, return the position of the first character for which this is not the case in errpos.

in : Array of unicode code points to process. Does not need to be zero terminated.
inlen : Number of unicode code points.
errpos : Position of offending character is returned here.
tld : A Tld_table data structure representing the restrictions for which the input should be tested.
Returns : Returns the Tld_rc value TLD_SUCCESS if all code points are valid or when tld is null, TLD_INVALID if a character is not allowed, or additional error codes on general failure conditions.

tld_check_4tz ()

int         tld_check_4tz                   (const uint32_t *in,
                                             size_t *errpos,
                                             const Tld_table *tld);

Test each of the code points in in for whether or not they are allowed by the data structure in tld, return the position of the first character for which this is not the case in errpos.

in : Zero terminated array of unicode code points to process.
errpos : Position of offending character is returned here.
tld : A Tld_table data structure representing the restrictions for which the input should be tested.
Returns : Returns the Tld_rc value TLD_SUCCESS if all code points are valid or when tld is null, TLD_INVALID if a character is not allowed, or additional error codes on general failure conditions.

tld_check_4 ()

int         tld_check_4                     (const uint32_t *in,
                                             size_t inlen,
                                             size_t *errpos,
                                             const Tld_table **overrides);

Test each of the code points in in for whether or not they are allowed by the information in overrides or by the built-in TLD restriction data. When data for the same TLD is available both internally and in overrides, the information in overrides takes precedence. If several entries for a specific TLD are found, the first one is used. If overrides is NULL, only the built-in information is used. The position of the first offending character is returned in errpos.

in : Array of unicode code points to process. Does not need to be zero terminated.
inlen : Number of unicode code points.
errpos : Position of offending character is returned here.
overrides : A Tld_table array of additional domain restriction structures that complement and supersede the built-in information.
Returns : Returns the Tld_rc value TLD_SUCCESS if all code points are valid or when tld is null, TLD_INVALID if a character is not allowed, or additional error codes on general failure conditions.

tld_check_4z ()

int         tld_check_4z                    (const uint32_t *in,
                                             size_t *errpos,
                                             const Tld_table **overrides);

Test each of the code points in in for whether or not they are allowed by the information in overrides or by the built-in TLD restriction data. When data for the same TLD is available both internally and in overrides, the information in overrides takes precedence. If several entries for a specific TLD are found, the first one is used. If overrides is NULL, only the built-in information is used. The position of the first offending character is returned in errpos.

in : Zero-terminated array of unicode code points to process.
errpos : Position of offending character is returned here.
overrides : A Tld_table array of additional domain restriction structures that complement and supersede the built-in information.
Returns : Returns the Tld_rc value TLD_SUCCESS if all code points are valid or when tld is null, TLD_INVALID if a character is not allowed, or additional error codes on general failure conditions.

tld_check_8z ()

int         tld_check_8z                    (const char *in,
                                             size_t *errpos,
                                             const Tld_table **overrides);

Test each of the characters in in for whether or not they are allowed by the information in overrides or by the built-in TLD restriction data. When data for the same TLD is available both internally and in overrides, the information in overrides takes precedence. If several entries for a specific TLD are found, the first one is used. If overrides is NULL, only the built-in information is used. The position of the first offending character is returned in errpos. Note that the error position refers to the decoded character offset rather than the byte position in the string.

in : Zero-terminated UTF8 string to process.
errpos : Position of offending character is returned here.
overrides : A Tld_table array of additional domain restriction structures that complement and supersede the built-in information.
Returns : Returns the Tld_rc value TLD_SUCCESS if all characters are valid or when tld is null, TLD_INVALID if a character is not allowed, or additional error codes on general failure conditions.

tld_check_lz ()

int         tld_check_lz                    (const char *in,
                                             size_t *errpos,
                                             const Tld_table **overrides);

Test each of the characters in in for whether or not they are allowed by the information in overrides or by the built-in TLD restriction data. When data for the same TLD is available both internally and in overrides, the information in overrides takes precedence. If several entries for a specific TLD are found, the first one is used. If overrides is NULL, only the built-in information is used. The position of the first offending character is returned in errpos. Note that the error position refers to the decoded character offset rather than the byte position in the string.

in : Zero-terminated string in the current locales encoding to process.
errpos : Position of offending character is returned here.
overrides : A Tld_table array of additional domain restriction structures that complement and supersede the built-in information.
Returns : Returns the Tld_rc value TLD_SUCCESS if all characters are valid or when tld is null, TLD_INVALID if a character is not allowed, or additional error codes on general failure conditions.