// Copyright (c) 2024 Marshall A. Greenblatt. 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See the translator.README.txt file in the tools directory for // more information. // // $hash=ad8218a8ac9e313884110e72bb2af32ec916907f$ // #ifndef CEF_INCLUDE_CAPI_CEF_RESOURCE_HANDLER_CAPI_H_ #define CEF_INCLUDE_CAPI_CEF_RESOURCE_HANDLER_CAPI_H_ #pragma once #include "include/capi/cef_base_capi.h" #include "include/capi/cef_browser_capi.h" #include "include/capi/cef_callback_capi.h" #include "include/capi/cef_cookie_capi.h" #include "include/capi/cef_request_capi.h" #include "include/capi/cef_response_capi.h" #ifdef __cplusplus extern "C" { #endif /// /// Callback for asynchronous continuation of cef_resource_handler_t::skip(). /// typedef struct _cef_resource_skip_callback_t { /// /// Base structure. /// cef_base_ref_counted_t base; /// /// Callback for asynchronous continuation of skip(). If |bytes_skipped| > 0 /// then either skip() will be called again until the requested number of /// bytes have been skipped or the request will proceed. If |bytes_skipped| <= /// 0 the request will fail with ERR_REQUEST_RANGE_NOT_SATISFIABLE. /// void(CEF_CALLBACK* cont)(struct _cef_resource_skip_callback_t* self, int64_t bytes_skipped); } cef_resource_skip_callback_t; /// /// Callback for asynchronous continuation of cef_resource_handler_t::read(). /// typedef struct _cef_resource_read_callback_t { /// /// Base structure. /// cef_base_ref_counted_t base; /// /// Callback for asynchronous continuation of read(). If |bytes_read| == 0 the /// response will be considered complete. If |bytes_read| > 0 then read() will /// be called again until the request is complete (based on either the result /// or the expected content length). If |bytes_read| < 0 then the request will /// fail and the |bytes_read| value will be treated as the error code. /// void(CEF_CALLBACK* cont)(struct _cef_resource_read_callback_t* self, int bytes_read); } cef_resource_read_callback_t; /// /// Structure used to implement a custom request handler structure. The /// functions of this structure will be called on the IO thread unless otherwise /// indicated. /// typedef struct _cef_resource_handler_t { /// /// Base structure. /// cef_base_ref_counted_t base; /// /// Open the response stream. To handle the request immediately set /// |handle_request| to true (1) and return true (1). To decide at a later /// time set |handle_request| to false (0), return true (1), and execute /// |callback| to continue or cancel the request. To cancel the request /// immediately set |handle_request| to true (1) and return false (0). This /// function will be called in sequence but not from a dedicated thread. For /// backwards compatibility set |handle_request| to false (0) and return false /// (0) and the ProcessRequest function will be called. /// int(CEF_CALLBACK* open)(struct _cef_resource_handler_t* self, struct _cef_request_t* request, int* handle_request, struct _cef_callback_t* callback); /// /// Begin processing the request. To handle the request return true (1) and /// call cef_callback_t::cont() once the response header information is /// available (cef_callback_t::cont() can also be called from inside this /// function if header information is available immediately). To cancel the /// request return false (0). /// /// WARNING: This function is deprecated. Use Open instead. /// int(CEF_CALLBACK* process_request)(struct _cef_resource_handler_t* self, struct _cef_request_t* request, struct _cef_callback_t* callback); /// /// Retrieve response header information. If the response length is not known /// set |response_length| to -1 and read_response() will be called until it /// returns false (0). If the response length is known set |response_length| /// to a positive value and read_response() will be called until it returns /// false (0) or the specified number of bytes have been read. Use the /// |response| object to set the mime type, http status code and other /// optional header values. To redirect the request to a new URL set /// |redirectUrl| to the new URL. |redirectUrl| can be either a relative or /// fully qualified URL. It is also possible to set |response| to a redirect /// http status code and pass the new URL via a Location header. Likewise with /// |redirectUrl| it is valid to set a relative or fully qualified URL as the /// Location header value. If an error occured while setting up the request /// you can call set_error() on |response| to indicate the error condition. /// void(CEF_CALLBACK* get_response_headers)(struct _cef_resource_handler_t* self, struct _cef_response_t* response, int64_t* response_length, cef_string_t* redirectUrl); /// /// Skip response data when requested by a Range header. Skip over and discard /// |bytes_to_skip| bytes of response data. If data is available immediately /// set |bytes_skipped| to the number of bytes skipped and return true (1). To /// read the data at a later time set |bytes_skipped| to 0, return true (1) /// and execute |callback| when the data is available. To indicate failure set /// |bytes_skipped| to < 0 (e.g. -2 for ERR_FAILED) and return false (0). This /// function will be called in sequence but not from a dedicated thread. /// int(CEF_CALLBACK* skip)(struct _cef_resource_handler_t* self, int64_t bytes_to_skip, int64_t* bytes_skipped, struct _cef_resource_skip_callback_t* callback); /// /// Read response data. If data is available immediately copy up to /// |bytes_to_read| bytes into |data_out|, set |bytes_read| to the number of /// bytes copied, and return true (1). To read the data at a later time keep a /// pointer to |data_out|, set |bytes_read| to 0, return true (1) and execute /// |callback| when the data is available (|data_out| will remain valid until /// the callback is executed). To indicate response completion set /// |bytes_read| to 0 and return false (0). To indicate failure set /// |bytes_read| to < 0 (e.g. -2 for ERR_FAILED) and return false (0). This /// function will be called in sequence but not from a dedicated thread. For /// backwards compatibility set |bytes_read| to -1 and return false (0) and /// the ReadResponse function will be called. /// int(CEF_CALLBACK* read)(struct _cef_resource_handler_t* self, void* data_out, int bytes_to_read, int* bytes_read, struct _cef_resource_read_callback_t* callback); /// /// Read response data. If data is available immediately copy up to /// |bytes_to_read| bytes into |data_out|, set |bytes_read| to the number of /// bytes copied, and return true (1). To read the data at a later time set /// |bytes_read| to 0, return true (1) and call cef_callback_t::cont() when /// the data is available. To indicate response completion return false (0). /// /// WARNING: This function is deprecated. Use Skip and Read instead. /// int(CEF_CALLBACK* read_response)(struct _cef_resource_handler_t* self, void* data_out, int bytes_to_read, int* bytes_read, struct _cef_callback_t* callback); /// /// Request processing has been canceled. /// void(CEF_CALLBACK* cancel)(struct _cef_resource_handler_t* self); } cef_resource_handler_t; #ifdef __cplusplus } #endif #endif // CEF_INCLUDE_CAPI_CEF_RESOURCE_HANDLER_CAPI_H_