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-rw-r--r--protocols/oscar/chatnav.c421
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..c7e11765
--- /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))) {
+ do_error_dialog(sess->aux_data, "no bigblock in top tlv in create room response", "Gaim");
+
+ 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) {
+ do_error_dialog(sess->aux_data, "unknown detaillevel in create room response", "Gaim");
+ 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))) {
+ do_error_dialog(sess->aux_data, "received response to unknown request!", "Gaim");
+ return 0;
+ }
+
+ if (snac2->family != 0x000d) {
+ do_error_dialog(sess->aux_data, "recieved response that maps to corrupt request!", "Gaim");
+ 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
+ do_error_dialog(sess->aux_data, "unknown request subtype", "Gaim");
+
+ 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;
+}
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