src/chatnav.c

   1 /*
   2  * Handle ChatNav.
   3  *
   4  * [The ChatNav(igation) service does various things to keep chat
   5  *  alive.  It provides room information, room searching and creating,
   6  *  as well as giving users the right ("permission") to use chat.]
   7  *
   8  */
   9
  10 #define FAIM_INTERNAL
  11 #include <aim.h>
  12
  13 /*
  14  * conn must be a chatnav connection!
  15  */
  16 faim_export int aim_chatnav_reqrights(aim_session_t *sess, aim_conn_t *conn)
  17 {
  18         return aim_genericreq_n_snacid(sess, conn, 0x000d, 0x0002);
  19 }
  20
  21 faim_export int aim_chatnav_clientready(aim_session_t *sess, aim_conn_t *conn)
  22 {
  23         aim_frame_t *fr;
  24         aim_snacid_t snacid;
  25
  26         if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 0x20)))
  27                 return -ENOMEM;
  28
  29         snacid = aim_cachesnac(sess, 0x0001, 0x0002, 0x0000, NULL, 0);
  30         aim_putsnac(&fr->data, 0x0001, 0x0002, 0x0000, snacid);
  31
  32         aimbs_put16(&fr->data, 0x000d);
  33         aimbs_put16(&fr->data, 0x0001);
  34
  35         aimbs_put16(&fr->data, 0x0004);
  36         aimbs_put16(&fr->data, 0x0001);
  37
  38         aimbs_put16(&fr->data, 0x0001);
  39         aimbs_put16(&fr->data, 0x0003);
  40
  41         aimbs_put16(&fr->data, 0x0004);
  42         aimbs_put16(&fr->data, 0x0686);
  43
  44         aim_tx_enqueue(sess, fr);
  45
  46         return 0;
  47 }
  48
  49 faim_export int aim_chatnav_createroom(aim_session_t *sess, aim_conn_t *conn, const char *name, fu16_t exchange)
  50 {
  51         aim_frame_t *fr;
  52         aim_snacid_t snacid;
  53         aim_tlvlist_t *tl = NULL;
  54
  55         if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 10+12+strlen("invite")+strlen(name))))
  56                 return -ENOMEM;
  57
  58         snacid = aim_cachesnac(sess, 0x000d, 0x0008, 0x0000, NULL, 0);
  59         aim_putsnac(&fr->data, 0x000d, 0x0008, 0x0000, snacid);
  60
  61         /* exchange */
  62         aimbs_put16(&fr->data, exchange);
  63
  64         /* room cookie */
  65         aimbs_put8(&fr->data, strlen("invite"));
  66         aimbs_putraw(&fr->data, "invite", strlen("invite"));
  67
  68         /*
  69          * instance
  70          *
  71          * Setting this to 0xffff apparently assigns the last instance.
  72          *
  73          */
  74         aimbs_put16(&fr->data, 0xffff);
  75
  76         /* detail level */
  77         aimbs_put8(&fr->data, 0x01);
  78
  79         /* room name */
  80         aim_addtlvtochain_raw(&tl, 0x00d3, strlen(name), name);
  81
  82         /* tlvcount */
  83         aimbs_put16(&fr->data, aim_counttlvchain(&tl));
  84         aim_writetlvchain(&fr->data, &tl);
  85
  86         aim_freetlvchain(&tl);
  87
  88         aim_tx_enqueue(sess, fr);
  89
  90         return 0;
  91 }
  92
  93 static int parseinfo_perms(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs, aim_snac_t *snac2)
  94 {
  95         aim_rxcallback_t userfunc;
  96         int ret = 0;
  97         struct aim_chat_exchangeinfo *exchanges = NULL;
  98         int curexchange;
  99         aim_tlv_t *exchangetlv;
 100         fu8_t maxrooms = 0;
 101         aim_tlvlist_t *tlvlist, *innerlist;
 102
 103         tlvlist = aim_readtlvchain(bs);
 104
 105         /*
 106          * Type 0x0002: Maximum concurrent rooms.
 107          */
 108         if (aim_gettlv(tlvlist, 0x0002, 1))
 109                 maxrooms = aim_gettlv8(tlvlist, 0x0002, 1);
 110
 111         /*
 112          * Type 0x0003: Exchange information
 113          *
 114          * There can be any number of these, each one
 115          * representing another exchange.
 116          *
 117          */
 118         for (curexchange = 0; ((exchangetlv = aim_gettlv(tlvlist, 0x0003, curexchange+1))); ) {
 119                 aim_bstream_t tbs;
 120
 121                 aim_bstream_init(&tbs, exchangetlv->value, exchangetlv->length);
 122
 123                 curexchange++;
 124
 125                 exchanges = realloc(exchanges, curexchange * sizeof(struct aim_chat_exchangeinfo));
 126
 127                 /* exchange number */
 128                 exchanges[curexchange-1].number = aimbs_get16(&tbs);
 129                 innerlist = aim_readtlvchain(&tbs);
 130
 131                 /*
 132                  * Type 0x000d: Unknown.
 133                  */
 134                 if (aim_gettlv(innerlist, 0x000d, 1))
 135                         ;
 136
 137                 /*
 138                  * Type 0x0004: Unknown
 139                  */
 140                 if (aim_gettlv(innerlist, 0x0004, 1))
 141                         ;
 142
 143                 /*
 144                  * Type 0x0002: Unknown
 145                  */
 146                 if (aim_gettlv(innerlist, 0x0002, 1)) {
 147                         fu16_t classperms;
 148
 149                         classperms = aim_gettlv16(innerlist, 0x0002, 1);
 150
 151                         faimdprintf(sess, 1, "faim: class permissions %x\n", classperms);
 152                 }
 153
 154                 /*
 155                  * Type 0x00c9: Unknown
 156                  */
 157                 if (aim_gettlv(innerlist, 0x00c9, 1))
 158                         ;
 159
 160                 /*
 161                  * Type 0x00ca: Creation Date
 162                  */
 163                 if (aim_gettlv(innerlist, 0x00ca, 1))
 164                         ;
 165
 166                 /*
 167                  * Type 0x00d0: Mandatory Channels?
 168                  */
 169                 if (aim_gettlv(innerlist, 0x00d0, 1))
 170                         ;
 171
 172                 /*
 173                  * Type 0x00d1: Maximum Message length
 174                  */
 175                 if (aim_gettlv(innerlist, 0x00d1, 1))
 176                         ;
 177
 178                 /*
 179                  * Type 0x00d2: Maximum Occupancy?
 180                  */
 181                 if (aim_gettlv(innerlist, 0x00d2, 1))
 182                         ;
 183
 184                 /*
 185                  * Type 0x00d3: Exchange Name
 186                  */
 187                 if (aim_gettlv(innerlist, 0x00d3, 1))
 188                         exchanges[curexchange-1].name = aim_gettlv_str(innerlist, 0x00d3, 1);
 189                 else
 190                         exchanges[curexchange-1].name = NULL;
 191
 192                 /*
 193                  * Type 0x00d5: Creation Permissions
 194                  *
 195                  * 0  Creation not allowed
 196                  * 1  Room creation allowed
 197                  * 2  Exchange creation allowed
 198                  *
 199                  */
 200                 if (aim_gettlv(innerlist, 0x00d5, 1)) {
 201                         fu8_t createperms;
 202
 203                         createperms = aim_gettlv8(innerlist, 0x00d5, 1);
 204                 }
 205
 206                 /*
 207                  * Type 0x00d6: Character Set (First Time)
 208                  */
 209                 if (aim_gettlv(innerlist, 0x00d6, 1))
 210                         exchanges[curexchange-1].charset1 = aim_gettlv_str(innerlist, 0x00d6, 1);
 211                 else
 212                         exchanges[curexchange-1].charset1 = NULL;
 213
 214                 /*
 215                  * Type 0x00d7: Language (First Time)
 216                  */
 217                 if (aim_gettlv(innerlist, 0x00d7, 1))
 218                         exchanges[curexchange-1].lang1 = aim_gettlv_str(innerlist, 0x00d7, 1);
 219                 else
 220                         exchanges[curexchange-1].lang1 = NULL;
 221
 222                 /*
 223                  * Type 0x00d8: Character Set (Second Time)
 224                  */
 225                 if (aim_gettlv(innerlist, 0x00d8, 1))
 226                         exchanges[curexchange-1].charset2 = aim_gettlv_str(innerlist, 0x00d8, 1);
 227                 else
 228                         exchanges[curexchange-1].charset2 = NULL;
 229
 230                 /*
 231                  * Type 0x00d9: Language (Second Time)
 232                  */
 233                 if (aim_gettlv(innerlist, 0x00d9, 1))
 234                         exchanges[curexchange-1].lang2 = aim_gettlv_str(innerlist, 0x00d9, 1);
 235                 else
 236                         exchanges[curexchange-1].lang2 = NULL;
 237
 238                 aim_freetlvchain(&innerlist);
 239         }
 240
 241         /*
 242          * Call client.
 243          */
 244         if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
 245                 ret = userfunc(sess, rx, snac2->type, maxrooms, curexchange, exchanges);
 246
 247         for (curexchange--; curexchange >= 0; curexchange--) {
 248                 free(exchanges[curexchange].name);
 249                 free(exchanges[curexchange].charset1);
 250                 free(exchanges[curexchange].lang1);
 251                 free(exchanges[curexchange].charset2);
 252                 free(exchanges[curexchange].lang2);
 253         }
 254         free(exchanges);
 255         aim_freetlvchain(&tlvlist);
 256
 257         return ret;
 258 }
 259
 260 static int parseinfo_create(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs, aim_snac_t *snac2)
 261 {
 262         aim_rxcallback_t userfunc;
 263         aim_tlvlist_t *tlvlist, *innerlist;
 264         char *ck = NULL, *fqcn = NULL, *name = NULL;
 265         fu16_t exchange = 0, instance = 0, unknown = 0, flags = 0, maxmsglen = 0, maxoccupancy = 0;
 266         fu32_t createtime = 0;
 267         fu8_t createperms = 0, detaillevel;
 268         int cklen;
 269         aim_tlv_t *bigblock;
 270         int ret = 0;
 271         aim_bstream_t bbbs;
 272
 273         tlvlist = aim_readtlvchain(bs);
 274
 275         if (!(bigblock = aim_gettlv(tlvlist, 0x0004, 1))) {
 276                 faimdprintf(sess, 0, "no bigblock in top tlv in create room response\n");
 277                 aim_freetlvchain(&tlvlist);
 278                 return 0;
 279         }
 280
 281         aim_bstream_init(&bbbs, bigblock->value, bigblock->length);
 282
 283         exchange = aimbs_get16(&bbbs);
 284         cklen = aimbs_get8(&bbbs);
 285         ck = aimbs_getstr(&bbbs, cklen);
 286         instance = aimbs_get16(&bbbs);
 287         detaillevel = aimbs_get8(&bbbs);
 288
 289         if (detaillevel != 0x02) {
 290                 faimdprintf(sess, 0, "unknown detaillevel in create room response (0x%02x)\n", detaillevel);
 291                 aim_freetlvchain(&tlvlist);
 292                 free(ck);
 293                 return 0;
 294         }
 295
 296         unknown = aimbs_get16(&bbbs);
 297
 298         innerlist = aim_readtlvchain(&bbbs);
 299
 300         if (aim_gettlv(innerlist, 0x006a, 1))
 301                 fqcn = aim_gettlv_str(innerlist, 0x006a, 1);
 302
 303         if (aim_gettlv(innerlist, 0x00c9, 1))
 304                 flags = aim_gettlv16(innerlist, 0x00c9, 1);
 305
 306         if (aim_gettlv(innerlist, 0x00ca, 1))
 307                 createtime = aim_gettlv32(innerlist, 0x00ca, 1);
 308
 309         if (aim_gettlv(innerlist, 0x00d1, 1))
 310                 maxmsglen = aim_gettlv16(innerlist, 0x00d1, 1);
 311
 312         if (aim_gettlv(innerlist, 0x00d2, 1))
 313                 maxoccupancy = aim_gettlv16(innerlist, 0x00d2, 1);
 314
 315         if (aim_gettlv(innerlist, 0x00d3, 1))
 316                 name = aim_gettlv_str(innerlist, 0x00d3, 1);
 317
 318         if (aim_gettlv(innerlist, 0x00d5, 1))
 319                 createperms = aim_gettlv8(innerlist, 0x00d5, 1);
 320
 321         if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) {
 322                 ret = userfunc(sess, rx, snac2->type, fqcn, instance, exchange, flags, createtime, maxmsglen, maxoccupancy, createperms, unknown, name, ck);
 323         }
 324
 325         free(ck);
 326         free(name);
 327         free(fqcn);
 328         aim_freetlvchain(&innerlist);
 329         aim_freetlvchain(&tlvlist);
 330
 331         return ret;
 332 }
 333
 334 /*
 335  * Since multiple things can trigger this callback, we must lookup the
 336  * snacid to determine the original snac subtype that was called.
 337  */
 338 static int parseinfo(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs)
 339 {
 340         aim_snac_t *snac2;
 341         int ret = 0;
 342
 343         if (!(snac2 = aim_remsnac(sess, snac->id))) {
 344                 faimdprintf(sess, 0, "faim: chatnav_parse_info: received response to unknown request! (%08lx)\n", snac->id);
 345                 return 0;
 346         }
 347
 348         if (snac2->family != 0x000d) {
 349                 faimdprintf(sess, 0, "faim: chatnav_parse_info: recieved response that maps to corrupt request! (fam=%04x)\n", snac2->family);
 350                 return 0;
 351         }
 352
 353         /*
 354          * We now know what the original SNAC subtype was.
 355          */
 356         if (snac2->type == 0x0002) /* request chat rights */
 357                 ret = parseinfo_perms(sess, mod, rx, snac, bs, snac2);
 358         else if (snac2->type == 0x0003) /* request exchange info */
 359                 faimdprintf(sess, 0, "chatnav_parse_info: resposne to exchange info\n");
 360         else if (snac2->type == 0x0004) /* request room info */
 361                 faimdprintf(sess, 0, "chatnav_parse_info: response to room info\n");
 362         else if (snac2->type == 0x0005) /* request more room info */
 363                 faimdprintf(sess, 0, "chatnav_parse_info: response to more room info\n");
 364         else if (snac2->type == 0x0006) /* request occupant list */
 365                 faimdprintf(sess, 0, "chatnav_parse_info: response to occupant info\n");
 366         else if (snac2->type == 0x0007) /* search for a room */
 367                 faimdprintf(sess, 0, "chatnav_parse_info: search results\n");
 368         else if (snac2->type == 0x0008) /* create room */
 369                 ret = parseinfo_create(sess, mod, rx, snac, bs, snac2);
 370         else
 371                 faimdprintf(sess, 0, "chatnav_parse_info: unknown request subtype (%04x)\n", snac2->type);
 372
 373         if (snac2)
 374                 free(snac2->data);
 375         free(snac2);
 376
 377         return ret;
 378 }
 379
 380 static int snachandler(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs)
 381 {
 382
 383         if (snac->subtype == 0x0009)
 384                 return parseinfo(sess, mod, rx, snac, bs);
 385
 386         return 0;
 387 }
 388
 389 faim_internal int chatnav_modfirst(aim_session_t *sess, aim_module_t *mod)
 390 {
 391
 392         mod->family = 0x000d;
 393         mod->version = 0x0000;
 394         mod->flags = 0;
 395         strncpy(mod->name, "chatnav", sizeof(mod->name));
 396         mod->snachandler = snachandler;
 397
 398         return 0;
 399 }