libpurple/protocols/myspace/myspace.h

/* MySpaceIM Protocol Plugin, headr file
 *
 * \author Jeff Connelly
 *
 * Copyright (C) 2007, Jeff Connelly <jeff2@homing.pidgin.im>
 *
 * 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
 */

/* Statuses */
#define MSIM_STATUS_ONLINE      "online"
#define MSIM_STATUS_AWAY        "away"
#define MSIM_STATUS_OFFLINE     "offline"
#define MSIM_STATUS_INVISIBLE   "invisible"

/* Build version of MySpaceIM to report to servers (1.0.xxx.0) */
#define MSIM_CLIENT_VERSION     673

/* Server */
#define MSIM_SERVER         "im.myspace.akadns.net"
//#define MSIM_SERVER         "localhost"
#define MSIM_PORT           1863        /* TODO: alternate ports and automatic */

/* Constants */
#define HASH_SIZE           0x14        /**< Size of SHA-1 hash for login */
#define NONCE_SIZE          0x20        /**< Half of decoded 'nc' field */
#define MSIM_READ_BUF_SIZE  5*1024      /**< Receive buffer size */
#define MSIM_FINAL_STRING   "\\final\\" /**< Message end marker */

/* Messages */
#define MSIM_BM_INSTANT     1
#define MSIM_BM_STATUS      100
#define MSIM_BM_ACTION      121
/*#define MSIM_BM_UNKNOWN1    122*/

/* Random number in every MsimSession, to ensure it is valid. */
#define MSIM_SESSION_STRUCT_MAGIC       0xe4a6752b

/* Everything needed to keep track of a session. */
typedef struct _MsimSession
{
    guint magic;                        /**< MSIM_SESSION_STRUCT_MAGIC */
    PurpleAccount *account;
    PurpleConnection *gc;
    gchar *sesskey;                     /**< Session key text string from server */
    gchar *userid;                      /**< This user's numeric user ID */
    gint fd;                            /**< File descriptor to/from server */

    GHashTable *user_lookup_cb;         /**< Username -> userid lookup callback */
    GHashTable *user_lookup_cb_data;    /**< Username -> userid lookup callback data */
    GHashTable *user_lookup_cache;      /**< Cached information on users */

    gchar *rxbuf;                       /**< Receive buffer */
    guint rxoff;                        /**< Receive buffer offset */
	/* TODO: rid, store here and increment instead of random. */
} MsimSession;

/* Check if an MsimSession is valid */
#define MSIM_SESSION_VALID(s) (session != NULL && \
		session->magic == MSIM_SESSION_STRUCT_MAGIC)

/* Callback function pointer type for when a user's information is received, 
 * initiated from a user lookup. */
typedef void (*MSIM_USER_LOOKUP_CB)(MsimSession *session, GHashTable *userinfo,
	   gpointer data);

/* Passed to MSIM_USER_LOOKUP_CB for msim_send_im_cb - called when
 * user information is available, ready to send a message. */
typedef struct _send_im_cb_struct
{
    gchar *who;
    gchar *message;
    PurpleMessageFlags flags;
} send_im_cb_struct;


/* Functions */
static void init_plugin(PurplePlugin *plugin);
static GList *msim_status_types(PurpleAccount *acct);
static const gchar *msim_list_icon(PurpleAccount *acct, PurpleBuddy *buddy);

static GHashTable* msim_parse(gchar* msg);
static GHashTable *msim_parse_body(const gchar *body_str);

static void print_hash_item(gpointer key, gpointer value, gpointer user_data);
static void msim_send(MsimSession *session, const gchar *msg);

static void msim_login(PurpleAccount *acct);
static int msim_login_challenge(MsimSession *session, GHashTable *table);
static gchar* msim_compute_login_response(guchar nonce[2*NONCE_SIZE],
		        gchar* email, gchar* password);

static int msim_send_im(PurpleConnection *gc, const char *who,
		const char *message, PurpleMessageFlags flags);
static int msim_send_im_by_userid(MsimSession *session, const gchar *userid, 
		const gchar *message, PurpleMessageFlags flags);
static void msim_send_im_by_userid_cb(MsimSession *session, 
		GHashTable *userinfo, gpointer data);
static void msim_incoming_im_cb(MsimSession *session, GHashTable *userinfo, 
		gpointer data);
static int msim_incoming_im(MsimSession *session, GHashTable *table);

static int msim_process_reply(MsimSession *session, GHashTable *table);
static int msim_process(PurpleConnection *gc, GHashTable *table);

static int msim_error(MsimSession *session, GHashTable *table);
static void msim_status_cb(MsimSession *session, GHashTable *userinfo, 
		gpointer data);
static int msim_status(MsimSession *session, GHashTable *table);
static void msim_input_cb(gpointer gc_uncasted, gint source, 
		PurpleInputCondition cond);
static void msim_connect_cb(gpointer data, gint source, 
		const gchar *error_message);

static MsimSession *msim_session_new(PurpleAccount *acct);
static void msim_session_destroy(MsimSession *session);

static void msim_close(PurpleConnection *gc);

static inline gboolean msim_is_userid(const gchar *user);
static inline gboolean msim_is_email(const gchar *user);

static void msim_lookup_user(MsimSession *session, const gchar *user, 
		MSIM_USER_LOOKUP_CB cb, gpointer data);

static char *msim_status_text(PurpleBuddy *buddy);
static void msim_tooltip_text(PurpleBuddy *buddy, 
		PurpleNotifyUserInfo *user_info, gboolean full);