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+/*
+ * libyahoo2: yahoo2_callbacks.h
+ *
+ * Copyright (C) 2002-2004, Philip S Tellis <philip.tellis AT gmx.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+/*
+ * The functions in this file *must* be defined in your client program
+ * If you want to use a callback structure instead of direct functions,
+ * then you must define USE_STRUCT_CALLBACKS in all files that #include
+ * this one.
+ *
+ * Register the callback structure by calling yahoo_register_callbacks -
+ * declared in this file and defined in libyahoo2.c
+ */
+
+#ifndef YAHOO2_CALLBACKS_H
+#define YAHOO2_CALLBACKS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "yahoo2_types.h"
+
+/*
+ * yahoo2_callbacks.h
+ *
+ * Callback interface for libyahoo2
+ */
+
+ typedef enum {
+ YAHOO_INPUT_READ = 1 << 0,
+ YAHOO_INPUT_WRITE = 1 << 1,
+ YAHOO_INPUT_EXCEPTION = 1 << 2
+ } yahoo_input_condition;
+
+/*
+ * A callback function called when an asynchronous connect completes.
+ *
+ * Params:
+ * fd - The file descriptor object that has been connected, or NULL on
+ * error
+ * error - The value of errno set by the call to connect or 0 if no error
+ * Set both fd and error to 0 if the connect was cancelled by the
+ * user
+ * callback_data - the callback_data passed to the ext_yahoo_connect_async
+ * function
+ */
+ typedef void (*yahoo_connect_callback) (void *fd, int error,
+ void *callback_data);
+
+/*
+ * The following functions need to be implemented in the client
+ * interface. They will be called by the library when each
+ * event occurs.
+ */
+
+/*
+ * should we use a callback structure or directly call functions
+ * if you want the structure, you *must* define USE_STRUCT_CALLBACKS
+ * both when you compile the library, and when you compile your code
+ * that uses the library
+ */
+
+#ifdef USE_STRUCT_CALLBACKS
+#define YAHOO_CALLBACK_TYPE(x) (*x)
+struct yahoo_callbacks {
+#else
+#define YAHOO_CALLBACK_TYPE(x) x
+#endif
+
+/*
+ * Name: ext_yahoo_login_response
+ * Called when the login process is complete
+ * Params:
+ * id - the id that identifies the server connection
+ * succ - enum yahoo_login_status
+ * url - url to reactivate account if locked
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_login_response) (int id, int succ,
+ const char *url);
+
+/*
+ * Name: ext_yahoo_got_buddies
+ * Called when the contact list is got from the server
+ * Params:
+ * id - the id that identifies the server connection
+ * buds - the buddy list
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_buddies) (int id, YList *buds);
+
+/*
+ * Name: ext_yahoo_got_ignore
+ * Called when the ignore list is got from the server
+ * Params:
+ * id - the id that identifies the server connection
+ * igns - the ignore list
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_ignore) (int id, YList *igns);
+
+/*
+ * Name: ext_yahoo_got_identities
+ * Called when the contact list is got from the server
+ * Params:
+ * id - the id that identifies the server connection
+ * ids - the identity list
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_identities) (int id, YList *ids);
+
+/*
+ * Name: ext_yahoo_got_cookies
+ * Called when the cookie list is got from the server
+ * Params:
+ * id - the id that identifies the server connection
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_cookies) (int id);
+
+/*
+ * Name: ext_yahoo_got_ping
+ * Called when the ping packet is received from the server
+ * Params:
+ * id - the id that identifies the server connection
+ * errormsg - optional error message
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_ping) (int id,
+ const char *errormsg);
+
+/*
+ * Name: ext_yahoo_status_changed
+ * Called when remote user's status changes.
+ * Params:
+ * id - the id that identifies the server connection
+ * who - the handle of the remote user
+ * stat - status code (enum yahoo_status)
+ * msg - the message if stat == YAHOO_STATUS_CUSTOM
+ * away - whether the contact is away or not (YAHOO_STATUS_CUSTOM)
+ * idle - this is the number of seconds he is idle [if he is idle]
+ * mobile - this is set for mobile users/buddies
+ * TODO: add support for pager, chat, and game states
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_status_changed) (int id,
+ const char *who, int stat, const char *msg, int away, int idle,
+ int mobile);
+
+/*
+ * Name: ext_yahoo_got_buzz
+ * Called when remote user sends you a buzz.
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the identity the message was sent to
+ * who - the handle of the remote user
+ * tm - timestamp of message if offline
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_buzz) (int id, const char *me,
+ const char *who, long tm);
+
+/*
+ * Name: ext_yahoo_got_im
+ * Called when remote user sends you a message.
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the identity the message was sent to
+ * who - the handle of the remote user
+ * msg - the message - NULL if stat == 2
+ * tm - timestamp of message if offline
+ * stat - message status - 0
+ * 1
+ * 2 == error sending message
+ * 5
+ * utf8 - whether the message is encoded as utf8 or not
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_im) (int id, const char *me,
+ const char *who, const char *msg, long tm, int stat, int utf8);
+
+/*
+ * Name: ext_yahoo_got_conf_invite
+ * Called when remote user sends you a conference invitation.
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the identity the invitation was sent to
+ * who - the user inviting you
+ * room - the room to join
+ * msg - the message
+ * members - the initial members of the conference (null terminated list)
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_conf_invite) (int id,
+ const char *me, const char *who, const char *room,
+ const char *msg, YList *members);
+
+/*
+ * Name: ext_yahoo_conf_userdecline
+ * Called when someone declines to join the conference.
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the identity in the conference
+ * who - the user who has declined
+ * room - the room
+ * msg - the declining message
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_conf_userdecline) (int id,
+ const char *me, const char *who, const char *room,
+ const char *msg);
+
+/*
+ * Name: ext_yahoo_conf_userjoin
+ * Called when someone joins the conference.
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the identity in the conference
+ * who - the user who has joined
+ * room - the room joined
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_conf_userjoin) (int id,
+ const char *me, const char *who, const char *room);
+
+/*
+ * Name: ext_yahoo_conf_userleave
+ * Called when someone leaves the conference.
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the identity in the conference
+ * who - the user who has left
+ * room - the room left
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_conf_userleave) (int id,
+ const char *me, const char *who, const char *room);
+
+/*
+ * Name: ext_yahoo_chat_cat_xml
+ * Called when ?
+ * Params:
+ * id - the id that identifies the server connection
+ * xml - ?
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_chat_cat_xml) (int id,
+ const char *xml);
+
+/*
+ * Name: ext_yahoo_chat_join
+ * Called when joining the chatroom.
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the identity in the chatroom
+ * room - the room joined, used in all other chat calls, freed by
+ * library after call
+ * topic - the topic of the room, freed by library after call
+ * members - the initial members of the chatroom (null terminated YList
+ * of yahoo_chat_member's) Must be freed by the client
+ * fd - the object where the connection is coming from (for tracking)
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_chat_join) (int id, const char *me,
+ const char *room, const char *topic, YList *members, void *fd);
+
+/*
+ * Name: ext_yahoo_chat_userjoin
+ * Called when someone joins the chatroom.
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the identity in the chatroom
+ * room - the room joined
+ * who - the user who has joined, Must be freed by the client
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_chat_userjoin) (int id,
+ const char *me, const char *room,
+ struct yahoo_chat_member *who);
+
+/*
+ * Name: ext_yahoo_chat_userleave
+ * Called when someone leaves the chatroom.
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the identity in the chatroom
+ * room - the room left
+ * who - the user who has left (Just the User ID)
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_chat_userleave) (int id,
+ const char *me, const char *room, const char *who);
+
+/*
+ * Name: ext_yahoo_chat_message
+ * Called when someone messages in the chatroom.
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the identity in the chatroom
+ * room - the room
+ * who - the user who messaged (Just the user id)
+ * msg - the message
+ * msgtype - 1 = Normal message
+ * 2 = /me type message
+ * utf8 - whether the message is utf8 encoded or not
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_chat_message) (int id,
+ const char *me, const char *who, const char *room,
+ const char *msg, int msgtype, int utf8);
+
+/*
+ *
+ * Name: ext_yahoo_chat_yahoologout
+ * called when yahoo disconnects your chat session
+ * Note this is called whenver a disconnect happens, client or server
+ * requested. Care should be taken to make sure you know the origin
+ * of the disconnect request before doing anything here (auto-join's etc)
+ * Params:
+ * id - the id that identifies this connection
+ * me - the identity in the chatroom
+ * Returns:
+ * nothing.
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_chat_yahoologout) (int id,
+ const char *me);
+
+/*
+ *
+ * Name: ext_yahoo_chat_yahooerror
+ * called when yahoo sends back an error to you
+ * Note this is called whenver chat message is sent into a room
+ * in error (fd not connected, room doesn't exists etc)
+ * Care should be taken to make sure you know the origin
+ * of the error before doing anything about it.
+ * Params:
+ * id - the id that identifies this connection
+ * me - the identity in the chatroom
+ * Returns:
+ * nothing.
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_chat_yahooerror) (int id,
+ const char *me);
+
+/*
+ * Name: ext_yahoo_conf_message
+ * Called when someone messages in the conference.
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the identity the conf message was sent to
+ * who - the user who messaged
+ * room - the room
+ * msg - the message
+ * utf8 - whether the message is utf8 encoded or not
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_conf_message) (int id,
+ const char *me, const char *who, const char *room,
+ const char *msg, int utf8);
+
+/*
+ * Name: ext_yahoo_got_file
+ * Called when someone sends you a file
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the identity the file was sent to
+ * who - the user who sent the file
+ * msg - the message
+ * fname- the file name if direct transfer
+ * fsize- the file size if direct transfer
+ * trid - transfer id. Unique for this transfer
+ *
+ * NOTE: Subsequent callbacks for file transfer do not send all of this
+ * information again since it is wasteful. Implementations are expected to
+ * save this information and supply it as callback data when the file or
+ * confirmation is sent
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_file) (int id, const char *me,
+ const char *who, const char *msg, const char *fname,
+ unsigned long fesize, char *trid);
+
+/*
+ * Name: ext_yahoo_got_ft_data
+ * Called multiple times when parts of the file are received
+ * Params:
+ * id - the id that identifies the server connection
+ * in - The data
+ * len - Length of the data
+ * data - callback data
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_ft_data) (int id,
+ const unsigned char *in, int len, void *data);
+
+/*
+ * Name: ext_yahoo_file_transfer_done
+ * File transfer is done
+ * Params:
+ * id - the id that identifies the server connection
+ * result - To notify if it finished successfully or with a failure
+ * data - callback data
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_file_transfer_done) (int id,
+ int result, void *data);
+
+/*
+ * Name: ext_yahoo_contact_added
+ * Called when a contact is added to your list
+ * Params:
+ * id - the id that identifies the server connection
+ * myid - the identity he was added to
+ * who - who was added
+ * msg - any message sent
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_contact_added) (int id,
+ const char *myid, const char *who, const char *msg);
+
+/*
+ * Name: ext_yahoo_rejected
+ * Called when a contact rejects your add
+ * Params:
+ * id - the id that identifies the server connection
+ * who - who rejected you
+ * msg - any message sent
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_rejected) (int id, const char *who,
+ const char *msg);
+
+/*
+ * Name: ext_yahoo_typing_notify
+ * Called when remote user starts or stops typing.
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the handle of the identity the notification is sent to
+ * who - the handle of the remote user
+ * stat - 1 if typing, 0 if stopped typing
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_typing_notify) (int id,
+ const char *me, const char *who, int stat);
+
+/*
+ * Name: ext_yahoo_game_notify
+ * Called when remote user starts or stops a game.
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the handle of the identity the notification is sent to
+ * who - the handle of the remote user
+ * stat - 1 if game, 0 if stopped gaming
+ * msg - game description and/or other text
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_game_notify) (int id, const char *me,
+ const char *who, int stat, const char *msg);
+
+/*
+ * Name: ext_yahoo_mail_notify
+ * Called when you receive mail, or with number of messages
+ * Params:
+ * id - the id that identifies the server connection
+ * from - who the mail is from - NULL if only mail count
+ * subj - the subject of the mail - NULL if only mail count
+ * cnt - mail count - 0 if new mail notification
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_mail_notify) (int id,
+ const char *from, const char *subj, int cnt);
+
+/*
+ * Name: ext_yahoo_system_message
+ * System message
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the handle of the identity the notification is sent to
+ * who - the source of the system message (there are different types)
+ * msg - the message
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_system_message) (int id,
+ const char *me, const char *who, const char *msg);
+
+/*
+ * Name: ext_yahoo_got_buddyicon
+ * Buddy icon received
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the handle of the identity the notification is sent to
+ * who - the person the buddy icon is for
+ * url - the url to use to load the icon
+ * checksum - the checksum of the icon content
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_buddyicon) (int id,
+ const char *me, const char *who, const char *url, int checksum);
+
+/*
+ * Name: ext_yahoo_got_buddyicon_checksum
+ * Buddy icon checksum received
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the handle of the identity the notification is sent to
+ * who - the yahoo id of the buddy icon checksum is for
+ * checksum - the checksum of the icon content
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_buddyicon_checksum) (int id,
+ const char *me, const char *who, int checksum);
+
+/*
+ * Name: ext_yahoo_got_buddyicon_request
+ * Buddy icon request received
+ * Params:
+ * id - the id that identifies the server connection
+ * me - the handle of the identity the notification is sent to
+ * who - the yahoo id of the buddy that requested the buddy icon
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_buddyicon_request) (int id,
+ const char *me, const char *who);
+
+/*
+ * Name: ext_yahoo_got_buddyicon_request
+ * Buddy icon request received
+ * Params:
+ * id - the id that identifies the server connection
+ * url - remote url, the uploaded buddy icon can be fetched from
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_buddyicon_uploaded) (int id,
+ const char *url);
+
+/*
+ * Name: ext_yahoo_got_webcam_image
+ * Called when you get a webcam update
+ * An update can either be receiving an image, a part of an image or
+ * just an update with a timestamp
+ * Params:
+ * id - the id that identifies the server connection
+ * who - the user who's webcam we're viewing
+ * image - image data
+ * image_size - length of the image in bytes
+ * real_size - actual length of image data
+ * timestamp - milliseconds since the webcam started
+ *
+ * If the real_size is smaller then the image_size then only part of
+ * the image has been read. This function will keep being called till
+ * the total amount of bytes in image_size has been read. The image
+ * received is in JPEG-2000 Code Stream Syntax (ISO/IEC 15444-1).
+ * The size of the image will be either 160x120 or 320x240.
+ * Each webcam image contains a timestamp. This timestamp should be
+ * used to keep the image in sync since some images can take longer
+ * to transport then others. When image_size is 0 we can still receive
+ * a timestamp to stay in sync
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_webcam_image) (int id,
+ const char *who, const unsigned char *image,
+ unsigned int image_size, unsigned int real_size,
+ unsigned int timestamp);
+
+/*
+ * Name: ext_yahoo_webcam_invite
+ * Called when you get a webcam invitation
+ * Params:
+ * id - the id that identifies the server connection
+ * me - identity the invitation is to
+ * from - who the invitation is from
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_webcam_invite) (int id,
+ const char *me, const char *from);
+
+/*
+ * Name: ext_yahoo_webcam_invite_reply
+ * Called when you get a response to a webcam invitation
+ * Params:
+ * id - the id that identifies the server connection
+ * me - identity the invitation response is to
+ * from - who the invitation response is from
+ * accept - 0 (decline), 1 (accept)
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_webcam_invite_reply) (int id,
+ const char *me, const char *from, int accept);
+
+/*
+ * Name: ext_yahoo_webcam_closed
+ * Called when the webcam connection closed
+ * Params:
+ * id - the id that identifies the server connection
+ * who - the user who we where connected to
+ * reason - reason why the connection closed
+ * 1 = user stopped broadcasting
+ * 2 = user cancelled viewing permission
+ * 3 = user declines permission
+ * 4 = user does not have webcam online
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_webcam_closed) (int id,
+ const char *who, int reason);
+
+/*
+ * Name: ext_yahoo_got_search_result
+ * Called when the search result received from server
+ * Params:
+ * id - the id that identifies the server connection
+ * found - total number of results returned in the current result set
+ * start - offset from where the current result set starts
+ * total - total number of results available (start + found <= total)
+ * contacts - the list of results as a YList of yahoo_found_contact
+ * these will be freed after this function returns, so
+ * if you need to use the information, make a copy
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_search_result) (int id,
+ int found, int start, int total, YList *contacts);
+
+/*
+ * Name: ext_yahoo_error
+ * Called on error.
+ * Params:
+ * id - the id that identifies the server connection
+ * err - the error message
+ * fatal- whether this error is fatal to the connection or not
+ * num - Which error is this
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_error) (int id, const char *err,
+ int fatal, int num);
+
+/*
+ * Name: ext_yahoo_webcam_viewer
+ * Called when a viewer disconnects/connects/requests to connect
+ * Params:
+ * id - the id that identifies the server connection
+ * who - the viewer
+ * connect - 0=disconnect 1=connect 2=request
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_webcam_viewer) (int id,
+ const char *who, int connect);
+
+/*
+ * Name: ext_yahoo_webcam_data_request
+ * Called when you get a request for webcam images
+ * Params:
+ * id - the id that identifies the server connection
+ * send - whether to send images or not
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_webcam_data_request) (int id,
+ int send);
+
+/*
+ * Name: ext_yahoo_log
+ * Called to log a message.
+ * Params:
+ * fmt - the printf formatted message
+ * Returns:
+ * 0
+ */
+ int YAHOO_CALLBACK_TYPE(ext_yahoo_log) (const char *fmt, ...);
+
+/*
+ * Name: ext_yahoo_add_handler
+ * Add a listener for the fd. Must call yahoo_read_ready
+ * when a YAHOO_INPUT_READ fd is ready and yahoo_write_ready
+ * when a YAHOO_INPUT_WRITE fd is ready.
+ * Params:
+ * id - the id that identifies the server connection
+ * fd - the fd object on which to listen
+ * cond - the condition on which to call the callback
+ * data - callback data to pass to yahoo_*_ready
+ *
+ * Returns: a tag to be used when removing the handler
+ */
+ int YAHOO_CALLBACK_TYPE(ext_yahoo_add_handler) (int id, void *fd,
+ yahoo_input_condition cond, void *data);
+
+/*
+ * Name: ext_yahoo_remove_handler
+ * Remove the listener for the fd.
+ * Params:
+ * id - the id that identifies the connection
+ * tag - the handler tag to remove
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_remove_handler) (int id, int tag);
+
+/*
+ * Name: ext_yahoo_connect
+ * Connect to a host:port
+ * Params:
+ * host - the host to connect to
+ * port - the port to connect on
+ * Returns:
+ * a unix file descriptor to the socket
+ */
+ int YAHOO_CALLBACK_TYPE(ext_yahoo_connect) (const char *host, int port);
+
+/*
+ * Name: ext_yahoo_connect_async
+ * Connect to a host:port asynchronously. This function should return
+ * immediately returing a tag used to identify the connection handler,
+ * or a pre-connect error (eg: host name lookup failure).
+ * Once the connect completes (successfully or unsuccessfully), callback
+ * should be called (see the signature for yahoo_connect_callback).
+ * The callback may safely be called before this function returns, but
+ * it should not be called twice.
+ * Params:
+ * id - the id that identifies this connection
+ * host - the host to connect to
+ * port - the port to connect on
+ * callback - function to call when connect completes
+ * callback_data - data to pass to the callback function
+ * use_ssl - Whether we need an SSL connection
+ * Returns:
+ * a tag signifying the connection attempt
+ */
+ int YAHOO_CALLBACK_TYPE(ext_yahoo_connect_async) (int id,
+ const char *host, int port, yahoo_connect_callback callback,
+ void *callback_data, int use_ssl);
+
+/*
+ * Name: ext_yahoo_get_ip_addr
+ * get IP Address for a domain name
+ * Params:
+ * domain - Domain name
+ * Returns:
+ * Newly allocated string containing the IP Address in IPv4 notation
+ */
+ char *YAHOO_CALLBACK_TYPE(ext_yahoo_get_ip_addr) (const char *domain);
+
+/*
+ * Name: ext_yahoo_write
+ * Write data from the buffer into the socket for the specified connection
+ * Params:
+ * fd - the file descriptor object that identifies this connection
+ * buf - Buffer to write the data from
+ * len - Length of the data
+ * Returns:
+ * Number of bytes written or -1 for error
+ */
+ int YAHOO_CALLBACK_TYPE(ext_yahoo_write) (void *fd, char *buf, int len);
+
+/*
+ * Name: ext_yahoo_read
+ * Read data into a buffer from socket for the specified connection
+ * Params:
+ * fd - the file descriptor object that identifies this connection
+ * buf - Buffer to read the data into
+ * len - Max length to read
+ * Returns:
+ * Number of bytes read or -1 for error
+ */
+ int YAHOO_CALLBACK_TYPE(ext_yahoo_read) (void *fd, char *buf, int len);
+
+/*
+ * Name: ext_yahoo_close
+ * Close the file descriptor object and free its resources. Libyahoo2 will not
+ * use this object again.
+ * Params:
+ * fd - the file descriptor object that identifies this connection
+ * Returns:
+ * Nothing
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_close) (void *fd);
+
+/*
+ * Name: ext_yahoo_got_buddy_change_group
+ * Acknowledgement of buddy changing group
+ * Params:
+ * id: client id
+ * me: The user
+ * who: Buddy name
+ * old_group: Old group name
+ * new_group: New group name
+ * Returns:
+ * Nothing
+ */
+ void YAHOO_CALLBACK_TYPE(ext_yahoo_got_buddy_change_group) (int id,
+ const char *me, const char *who, const char *old_group,
+ const char *new_group);
+
+#ifdef USE_STRUCT_CALLBACKS
+};
+
+/*
+ * if using a callback structure, call yahoo_register_callbacks
+ * before doing anything else
+ */
+void yahoo_register_callbacks(struct yahoo_callbacks *tyc);
+
+#undef YAHOO_CALLBACK_TYPE
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif