* Structures...
*/
-typedef struct /**** Attribute mapping data ****/
+typedef union _ipp_request_u /**** Request Header ****/
+{
+ struct /* Any Header */
+ {
+ ipp_uchar_t version[2]; /* Protocol version number */
+ int op_status; /* Operation ID or status code*/
+ int request_id; /* Request ID */
+ } any;
+
+ struct /* Operation Header */
+ {
+ ipp_uchar_t version[2]; /* Protocol version number */
+ ipp_op_t operation_id; /* Operation ID */
+ int request_id; /* Request ID */
+ } op;
+
+ struct /* Status Header */
+ {
+ ipp_uchar_t version[2]; /* Protocol version number */
+ ipp_status_t status_code; /* Status code */
+ int request_id; /* Request ID */
+ } status;
+
+ /**** New in CUPS 1.1.19 ****/
+ struct /* Event Header @since CUPS 1.1.19/macOS 10.3@ */
+ {
+ ipp_uchar_t version[2]; /* Protocol version number */
+ ipp_status_t status_code; /* Status code */
+ int request_id; /* Request ID */
+ } event;
+} _ipp_request_t;
+
+typedef union _ipp_value_u /**** Attribute Value ****/
+{
+ int integer; /* Integer/enumerated value */
+
+ char boolean; /* Boolean value */
+
+ ipp_uchar_t date[11]; /* Date/time value */
+
+ struct
+ {
+ int xres, /* Horizontal resolution */
+ yres; /* Vertical resolution */
+ ipp_res_t units; /* Resolution units */
+ } resolution; /* Resolution value */
+
+ struct
+ {
+ int lower, /* Lower value */
+ upper; /* Upper value */
+ } range; /* Range of integers value */
+
+ struct
+ {
+ char *language; /* Language code */
+ char *text; /* String */
+ } string; /* String with language value */
+
+ struct
+ {
+ int length; /* Length of attribute */
+ void *data; /* Data in attribute */
+ } unknown; /* Unknown attribute type */
+
+/**** New in CUPS 1.1.19 ****/
+ ipp_t *collection; /* Collection value @since CUPS 1.1.19/macOS 10.3@ */
+} _ipp_value_t;
+
+struct _ipp_attribute_s /**** IPP attribute ****/
+{
+ ipp_attribute_t *next; /* Next attribute in list */
+ ipp_tag_t group_tag, /* Job/Printer/Operation group tag */
+ value_tag; /* What type of value is it? */
+ char *name; /* Name of attribute */
+ int num_values; /* Number of values */
+ _ipp_value_t values[1]; /* Values */
+};
+
+struct _ipp_s /**** IPP Request/Response/Notification ****/
+{
+ ipp_state_t state; /* State of request */
+ _ipp_request_t request; /* Request header */
+ ipp_attribute_t *attrs; /* Attributes */
+ ipp_attribute_t *last; /* Last attribute in list */
+ ipp_attribute_t *current; /* Current attribute (for read/write) */
+ ipp_tag_t curtag; /* Current attribute group tag */
+
+/**** New in CUPS 1.2 ****/
+ ipp_attribute_t *prev; /* Previous attribute (for read) @since CUPS 1.2/macOS 10.5@ */
+
+/**** New in CUPS 1.4.4 ****/
+ int use; /* Use count @since CUPS 1.4.4/macOS 10.6.?@ */
+/**** New in CUPS 2.0 ****/
+ int atend, /* At end of list? */
+ curindex; /* Current attribute index for hierarchical search */
+};
+
+typedef struct _ipp_option_s /**** Attribute mapping data ****/
{
int multivalue; /* Option has multiple values? */
const char *name; /* Option/attribute name */