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buddylist.c

#define FAIM_INTERNAL
#include <aim.h>

/*
 * Oncoming Buddy notifications contain a subset of the
 * user information structure.  Its close enough to run
 * through aim_extractuserinfo() however.
 *
 * Although the offgoing notification contains no information,
 * it is still in a format parsable by extractuserinfo.
 *
 */
static int buddychange(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs)
{
      aim_userinfo_t userinfo;
      aim_rxcallback_t userfunc;

      aim_extractuserinfo(sess, bs, &userinfo);

      if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
            return userfunc(sess, rx, &userinfo);

      return 0;
}

static int rights(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs)
{
      aim_rxcallback_t userfunc;
      aim_tlvlist_t *tlvlist;
      fu16_t maxbuddies = 0, maxwatchers = 0;
      int ret = 0;

      /* 
       * TLVs follow 
       */
      tlvlist = aim_readtlvchain(bs);

      /*
       * TLV type 0x0001: Maximum number of buddies.
       */
      if (aim_gettlv(tlvlist, 0x0001, 1))
            maxbuddies = aim_gettlv16(tlvlist, 0x0001, 1);

      /*
       * TLV type 0x0002: Maximum number of watchers.
       *
       * Watchers are other users who have you on their buddy
       * list.  (This is called the "reverse list" by a certain
       * other IM protocol.)
       * 
       */
      if (aim_gettlv(tlvlist, 0x0002, 1))
            maxwatchers = aim_gettlv16(tlvlist, 0x0002, 1);

      if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
            ret = userfunc(sess, rx, maxbuddies, maxwatchers);

      aim_freetlvchain(&tlvlist);

      return ret;  
}

static int snachandler(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs)
{

      if (snac->subtype == 0x0003)
            return rights(sess, mod, rx, snac, bs);
      else if ((snac->subtype == 0x000b) || (snac->subtype == 0x000c))
            return buddychange(sess, mod, rx, snac, bs);

      return 0;
}

faim_internal int buddylist_modfirst(aim_session_t *sess, aim_module_t *mod)
{

      mod->family = 0x0003;
      mod->version = 0x0001;
      mod->toolid = 0x0110;
      mod->toolversion = 0x047b;
      mod->flags = 0;
      strncpy(mod->name, "buddylist", sizeof(mod->name));
      mod->snachandler = snachandler;

      return 0;
}

/*
 * aim_add_buddy()
 *
 * Adds a single buddy to your buddy list after login.
 *
 * XXX this should just be an extension of setbuddylist()
 *
 */
faim_export int aim_add_buddy(aim_session_t *sess, aim_conn_t *conn, const char *sn)
{
      aim_frame_t *fr;
      aim_snacid_t snacid;

      if (!sn || !strlen(sn))
            return -EINVAL;

      if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 10+1+strlen(sn))))
            return -ENOMEM;

      snacid = aim_cachesnac(sess, 0x0003, 0x0004, 0x0000, sn, strlen(sn)+1);
      aim_putsnac(&fr->data, 0x0003, 0x0004, 0x0000, snacid);

      aimbs_put8(&fr->data, strlen(sn));
      aimbs_putraw(&fr->data, sn, strlen(sn));

      aim_tx_enqueue(sess, fr);

      return 0;
}

/*
 * XXX generalise to support removing multiple buddies (basically, its
 * the same as setbuddylist() but with a different snac subtype).
 *
 */
faim_export int aim_remove_buddy(aim_session_t *sess, aim_conn_t *conn, const char *sn)
{
      aim_frame_t *fr;
      aim_snacid_t snacid;

      if (!sn || !strlen(sn))
            return -EINVAL;

      if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 10+1+strlen(sn))))
            return -ENOMEM;

      snacid = aim_cachesnac(sess, 0x0003, 0x0005, 0x0000, sn, strlen(sn)+1);
      aim_putsnac(&fr->data, 0x0003, 0x0005, 0x0000, snacid);

      aimbs_put8(&fr->data, strlen(sn));
      aimbs_putraw(&fr->data, sn, strlen(sn));

      aim_tx_enqueue(sess, fr);

      return 0;
}


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