diff options
Diffstat (limited to 'protocols/oscar/chatnav.c')
| -rw-r--r-- | protocols/oscar/chatnav.c | 421 |
1 files changed, 421 insertions, 0 deletions
diff --git a/protocols/oscar/chatnav.c b/protocols/oscar/chatnav.c new file mode 100644 index 00000000..7cfc52af --- /dev/null +++ b/protocols/oscar/chatnav.c @@ -0,0 +1,421 @@ +/* + * Handle ChatNav. + * + * [The ChatNav(igation) service does various things to keep chat + * alive. It provides room information, room searching and creating, + * as well as giving users the right ("permission") to use chat.] + * + */ + +#include <aim.h> +#include "chatnav.h" + +/* + * conn must be a chatnav connection! + */ +int aim_chatnav_reqrights(aim_session_t *sess, aim_conn_t *conn) +{ + return aim_genericreq_n_snacid(sess, conn, 0x000d, 0x0002); +} + +int aim_chatnav_createroom(aim_session_t *sess, aim_conn_t *conn, const char *name, guint16 exchange) +{ + static const char ck[] = {"create"}; + static const char lang[] = {"en"}; + static const char charset[] = {"us-ascii"}; + aim_frame_t *fr; + aim_snacid_t snacid; + aim_tlvlist_t *tl = NULL; + + if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 1152))) + return -ENOMEM; + + snacid = aim_cachesnac(sess, 0x000d, 0x0008, 0x0000, NULL, 0); + aim_putsnac(&fr->data, 0x000d, 0x0008, 0x0000, snacid); + + /* exchange */ + aimbs_put16(&fr->data, exchange); + + /* + * This looks to be a big hack. You'll note that this entire + * SNAC is just a room info structure, but the hard room name, + * here, is set to "create". + * + * Either this goes on the "list of questions concerning + * why-the-hell-did-you-do-that", or this value is completly + * ignored. Without experimental evidence, but a good knowledge of + * AOL style, I'm going to guess that it is the latter, and that + * the value of the room name in create requests is ignored. + */ + aimbs_put8(&fr->data, strlen(ck)); + aimbs_putraw(&fr->data, (guint8 *)ck, strlen(ck)); + + /* + * instance + * + * Setting this to 0xffff apparently assigns the last instance. + * + */ + aimbs_put16(&fr->data, 0xffff); + + /* detail level */ + aimbs_put8(&fr->data, 0x01); + + aim_addtlvtochain_raw(&tl, 0x00d3, strlen(name), (guint8 *)name); + aim_addtlvtochain_raw(&tl, 0x00d6, strlen(charset), (guint8 *)charset); + aim_addtlvtochain_raw(&tl, 0x00d7, strlen(lang), (guint8 *)lang); + + /* tlvcount */ + aimbs_put16(&fr->data, aim_counttlvchain(&tl)); + aim_writetlvchain(&fr->data, &tl); + + aim_freetlvchain(&tl); + + aim_tx_enqueue(sess, fr); + + return 0; +} + +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) +{ + aim_rxcallback_t userfunc; + int ret = 0; + struct aim_chat_exchangeinfo *exchanges = NULL; + int curexchange; + aim_tlv_t *exchangetlv; + guint8 maxrooms = 0; + aim_tlvlist_t *tlvlist, *innerlist; + + tlvlist = aim_readtlvchain(bs); + + /* + * Type 0x0002: Maximum concurrent rooms. + */ + if (aim_gettlv(tlvlist, 0x0002, 1)) + maxrooms = aim_gettlv8(tlvlist, 0x0002, 1); + + /* + * Type 0x0003: Exchange information + * + * There can be any number of these, each one + * representing another exchange. + * + */ + for (curexchange = 0; ((exchangetlv = aim_gettlv(tlvlist, 0x0003, curexchange+1))); ) { + aim_bstream_t tbs; + + aim_bstream_init(&tbs, exchangetlv->value, exchangetlv->length); + + curexchange++; + + exchanges = g_realloc(exchanges, curexchange * sizeof(struct aim_chat_exchangeinfo)); + + /* exchange number */ + exchanges[curexchange-1].number = aimbs_get16(&tbs); + innerlist = aim_readtlvchain(&tbs); + + /* + * Type 0x000a: Unknown. + * + * Usually three bytes: 0x0114 (exchange 1) or 0x010f (others). + * + */ + if (aim_gettlv(innerlist, 0x000a, 1)) + ; + + /* + * Type 0x000d: Unknown. + */ + if (aim_gettlv(innerlist, 0x000d, 1)) + ; + + /* + * Type 0x0004: Unknown + */ + if (aim_gettlv(innerlist, 0x0004, 1)) + ; + + /* + * Type 0x0002: Unknown + */ + if (aim_gettlv(innerlist, 0x0002, 1)) { + guint16 classperms; + + classperms = aim_gettlv16(innerlist, 0x0002, 1); + + } + + /* + * Type 0x00c9: Flags + * + * 1 Evilable + * 2 Nav Only + * 4 Instancing Allowed + * 8 Occupant Peek Allowed + * + */ + if (aim_gettlv(innerlist, 0x00c9, 1)) + exchanges[curexchange-1].flags = aim_gettlv16(innerlist, 0x00c9, 1); + + /* + * Type 0x00ca: Creation Date + */ + if (aim_gettlv(innerlist, 0x00ca, 1)) + ; + + /* + * Type 0x00d0: Mandatory Channels? + */ + if (aim_gettlv(innerlist, 0x00d0, 1)) + ; + + /* + * Type 0x00d1: Maximum Message length + */ + if (aim_gettlv(innerlist, 0x00d1, 1)) + ; + + /* + * Type 0x00d2: Maximum Occupancy? + */ + if (aim_gettlv(innerlist, 0x00d2, 1)) + ; + + /* + * Type 0x00d3: Exchange Description + */ + if (aim_gettlv(innerlist, 0x00d3, 1)) + exchanges[curexchange-1].name = aim_gettlv_str(innerlist, 0x00d3, 1); + else + exchanges[curexchange-1].name = NULL; + + /* + * Type 0x00d4: Exchange Description URL + */ + if (aim_gettlv(innerlist, 0x00d4, 1)) + ; + + /* + * Type 0x00d5: Creation Permissions + * + * 0 Creation not allowed + * 1 Room creation allowed + * 2 Exchange creation allowed + * + */ + if (aim_gettlv(innerlist, 0x00d5, 1)) { + guint8 createperms; + + createperms = aim_gettlv8(innerlist, 0x00d5, 1); + } + + /* + * Type 0x00d6: Character Set (First Time) + */ + if (aim_gettlv(innerlist, 0x00d6, 1)) + exchanges[curexchange-1].charset1 = aim_gettlv_str(innerlist, 0x00d6, 1); + else + exchanges[curexchange-1].charset1 = NULL; + + /* + * Type 0x00d7: Language (First Time) + */ + if (aim_gettlv(innerlist, 0x00d7, 1)) + exchanges[curexchange-1].lang1 = aim_gettlv_str(innerlist, 0x00d7, 1); + else + exchanges[curexchange-1].lang1 = NULL; + + /* + * Type 0x00d8: Character Set (Second Time) + */ + if (aim_gettlv(innerlist, 0x00d8, 1)) + exchanges[curexchange-1].charset2 = aim_gettlv_str(innerlist, 0x00d8, 1); + else + exchanges[curexchange-1].charset2 = NULL; + + /* + * Type 0x00d9: Language (Second Time) + */ + if (aim_gettlv(innerlist, 0x00d9, 1)) + exchanges[curexchange-1].lang2 = aim_gettlv_str(innerlist, 0x00d9, 1); + else + exchanges[curexchange-1].lang2 = NULL; + + /* + * Type 0x00da: Unknown + */ + if (aim_gettlv(innerlist, 0x00da, 1)) + ; + + aim_freetlvchain(&innerlist); + } + + /* + * Call client. + */ + if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) + ret = userfunc(sess, rx, snac2->type, maxrooms, curexchange, exchanges); + + for (curexchange--; curexchange >= 0; curexchange--) { + g_free(exchanges[curexchange].name); + g_free(exchanges[curexchange].charset1); + g_free(exchanges[curexchange].lang1); + g_free(exchanges[curexchange].charset2); + g_free(exchanges[curexchange].lang2); + } + g_free(exchanges); + aim_freetlvchain(&tlvlist); + + return ret; +} + +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) +{ + aim_rxcallback_t userfunc; + aim_tlvlist_t *tlvlist, *innerlist; + char *ck = NULL, *fqcn = NULL, *name = NULL; + guint16 exchange = 0, instance = 0, unknown = 0, flags = 0, maxmsglen = 0, maxoccupancy = 0; + guint32 createtime = 0; + guint8 createperms = 0, detaillevel; + int cklen; + aim_tlv_t *bigblock; + int ret = 0; + aim_bstream_t bbbs; + + tlvlist = aim_readtlvchain(bs); + + if (!(bigblock = aim_gettlv(tlvlist, 0x0004, 1))) { + imcb_error(sess->aux_data, "no bigblock in top tlv in create room response"); + + aim_freetlvchain(&tlvlist); + return 0; + } + + aim_bstream_init(&bbbs, bigblock->value, bigblock->length); + + exchange = aimbs_get16(&bbbs); + cklen = aimbs_get8(&bbbs); + ck = aimbs_getstr(&bbbs, cklen); + instance = aimbs_get16(&bbbs); + detaillevel = aimbs_get8(&bbbs); + + if (detaillevel != 0x02) { + imcb_error(sess->aux_data, "unknown detaillevel in create room response"); + aim_freetlvchain(&tlvlist); + g_free(ck); + return 0; + } + + unknown = aimbs_get16(&bbbs); + + innerlist = aim_readtlvchain(&bbbs); + + if (aim_gettlv(innerlist, 0x006a, 1)) + fqcn = aim_gettlv_str(innerlist, 0x006a, 1); + + if (aim_gettlv(innerlist, 0x00c9, 1)) + flags = aim_gettlv16(innerlist, 0x00c9, 1); + + if (aim_gettlv(innerlist, 0x00ca, 1)) + createtime = aim_gettlv32(innerlist, 0x00ca, 1); + + if (aim_gettlv(innerlist, 0x00d1, 1)) + maxmsglen = aim_gettlv16(innerlist, 0x00d1, 1); + + if (aim_gettlv(innerlist, 0x00d2, 1)) + maxoccupancy = aim_gettlv16(innerlist, 0x00d2, 1); + + if (aim_gettlv(innerlist, 0x00d3, 1)) + name = aim_gettlv_str(innerlist, 0x00d3, 1); + + if (aim_gettlv(innerlist, 0x00d5, 1)) + createperms = aim_gettlv8(innerlist, 0x00d5, 1); + + if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) { + ret = userfunc(sess, rx, snac2->type, fqcn, instance, exchange, flags, createtime, maxmsglen, maxoccupancy, createperms, unknown, name, ck); + } + + g_free(ck); + g_free(name); + g_free(fqcn); + aim_freetlvchain(&innerlist); + aim_freetlvchain(&tlvlist); + + return ret; +} + +/* + * Since multiple things can trigger this callback, we must lookup the + * snacid to determine the original snac subtype that was called. + * + * XXX This isn't really how this works. But this is: Every d/9 response + * has a 16bit value at the beginning. That matches to: + * Short Desc = 1 + * Full Desc = 2 + * Instance Info = 4 + * Nav Short Desc = 8 + * Nav Instance Info = 16 + * And then everything is really asynchronous. There is no specific + * attachment of a response to a create room request, for example. Creating + * the room yields no different a response than requesting the room's info. + * + */ +static int parseinfo(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs) +{ + aim_snac_t *snac2; + int ret = 0; + + if (!(snac2 = aim_remsnac(sess, snac->id))) { + imcb_error(sess->aux_data, "received response to unknown request!"); + return 0; + } + + if (snac2->family != 0x000d) { + imcb_error(sess->aux_data, "received response that maps to corrupt request!"); + return 0; + } + + /* + * We now know what the original SNAC subtype was. + */ + if (snac2->type == 0x0002) /* request chat rights */ + ret = parseinfo_perms(sess, mod, rx, snac, bs, snac2); + else if (snac2->type == 0x0003) {} /* request exchange info */ + else if (snac2->type == 0x0004) {} /* request room info */ + else if (snac2->type == 0x0005) {} /* request more room info */ + else if (snac2->type == 0x0006) {} /* request occupant list */ + else if (snac2->type == 0x0007) {} /* search for a room */ + else if (snac2->type == 0x0008) /* create room */ + ret = parseinfo_create(sess, mod, rx, snac, bs, snac2); + else + imcb_error(sess->aux_data, "unknown request subtype"); + + if (snac2) + g_free(snac2->data); + g_free(snac2); + + 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 == 0x0009) + return parseinfo(sess, mod, rx, snac, bs); + + return 0; +} + +int chatnav_modfirst(aim_session_t *sess, aim_module_t *mod) +{ + + mod->family = 0x000d; + mod->version = 0x0003; + mod->toolid = 0x0010; + mod->toolversion = 0x0629; + mod->flags = 0; + strncpy(mod->name, "chatnav", sizeof(mod->name)); + mod->snachandler = snachandler; + + return 0; +} |