diff options
Diffstat (limited to 'protocols/oscar/im.c')
| -rw-r--r-- | protocols/oscar/im.c | 2141 |
1 files changed, 2141 insertions, 0 deletions
diff --git a/protocols/oscar/im.c b/protocols/oscar/im.c new file mode 100644 index 00000000..4169ea4d --- /dev/null +++ b/protocols/oscar/im.c @@ -0,0 +1,2141 @@ +/* + * aim_im.c + * + * The routines for sending/receiving Instant Messages. + * + * Note the term ICBM (Inter-Client Basic Message) which blankets + * all types of genericly routed through-server messages. Within + * the ICBM types (family 4), a channel is defined. Each channel + * represents a different type of message. Channel 1 is used for + * what would commonly be called an "instant message". Channel 2 + * is used for negotiating "rendezvous". These transactions end in + * something more complex happening, such as a chat invitation, or + * a file transfer. + * + * In addition to the channel, every ICBM contains a cookie. For + * standard IMs, these are only used for error messages. However, + * the more complex rendezvous messages make suitably more complex + * use of this field. + * + */ + +#include <aim.h> +#include "im.h" +#include "info.h" + +/* + * Takes a msghdr (and a length) and returns a client type + * code. Note that this is *only a guess* and has a low likelihood + * of actually being accurate. + * + * Its based on experimental data, with the help of Eric Warmenhoven + * who seems to have collected a wide variety of different AIM clients. + * + * + * Heres the current collection: + * 0501 0003 0101 0101 01 AOL Mobile Communicator, WinAIM 1.0.414 + * 0501 0003 0101 0201 01 WinAIM 2.0.847, 2.1.1187, 3.0.1464, + * 4.3.2229, 4.4.2286 + * 0501 0004 0101 0102 0101 WinAIM 4.1.2010, libfaim (right here) + * 0501 0001 0101 01 AOL v6.0, CompuServe 2000 v6.0, any + * TOC client + * + * Note that in this function, only the feature bytes are tested, since + * the rest will always be the same. + * + */ +guint16 aim_fingerprintclient(guint8 *msghdr, int len) +{ + static const struct { + guint16 clientid; + int len; + guint8 data[10]; + } fingerprints[] = { + /* AOL Mobile Communicator, WinAIM 1.0.414 */ + { AIM_CLIENTTYPE_MC, + 3, {0x01, 0x01, 0x01}}, + + /* WinAIM 2.0.847, 2.1.1187, 3.0.1464, 4.3.2229, 4.4.2286 */ + { AIM_CLIENTTYPE_WINAIM, + 3, {0x01, 0x01, 0x02}}, + + /* WinAIM 4.1.2010, libfaim */ + { AIM_CLIENTTYPE_WINAIM41, + 4, {0x01, 0x01, 0x01, 0x02}}, + + /* AOL v6.0, CompuServe 2000 v6.0, any TOC client */ + { AIM_CLIENTTYPE_AOL_TOC, + 1, {0x01}}, + + { 0, 0} + }; + int i; + + if (!msghdr || (len <= 0)) + return AIM_CLIENTTYPE_UNKNOWN; + + for (i = 0; fingerprints[i].len; i++) { + if (fingerprints[i].len != len) + continue; + if (memcmp(fingerprints[i].data, msghdr, fingerprints[i].len) == 0) + return fingerprints[i].clientid; + } + + return AIM_CLIENTTYPE_UNKNOWN; +} + +/* This should be endian-safe now... but who knows... */ +guint16 aim_iconsum(const guint8 *buf, int buflen) +{ + guint32 sum; + int i; + + for (i = 0, sum = 0; i + 1 < buflen; i += 2) + sum += (buf[i+1] << 8) + buf[i]; + if (i < buflen) + sum += buf[i]; + + sum = ((sum & 0xffff0000) >> 16) + (sum & 0x0000ffff); + + return (guint16)sum; +} + +/* + * Send an ICBM (instant message). + * + * + * Possible flags: + * AIM_IMFLAGS_AWAY -- Marks the message as an autoresponse + * AIM_IMFLAGS_ACK -- Requests that the server send an ack + * when the message is received (of type 0x0004/0x000c) + * AIM_IMFLAGS_OFFLINE--If destination is offline, store it until they are + * online (probably ICQ only). + * AIM_IMFLAGS_UNICODE--Instead of ASCII7, the passed message is + * made up of UNICODE duples. If you set + * this, you'd better be damn sure you know + * what you're doing. + * AIM_IMFLAGS_ISO_8859_1 -- The message contains the ASCII8 subset + * known as ISO-8859-1. + * + * Generally, you should use the lowest encoding possible to send + * your message. If you only use basic punctuation and the generic + * Latin alphabet, use ASCII7 (no flags). If you happen to use non-ASCII7 + * characters, but they are all clearly defined in ISO-8859-1, then + * use that. Keep in mind that not all characters in the PC ASCII8 + * character set are defined in the ISO standard. For those cases (most + * notably when the (r) symbol is used), you must use the full UNICODE + * encoding for your message. In UNICODE mode, _all_ characters must + * occupy 16bits, including ones that are not special. (Remember that + * the first 128 UNICODE symbols are equivelent to ASCII7, however they + * must be prefixed with a zero high order byte.) + * + * I strongly discourage the use of UNICODE mode, mainly because none + * of the clients I use can parse those messages (and besides that, + * wchars are difficult and non-portable to handle in most UNIX environments). + * If you really need to include special characters, use the HTML UNICODE + * entities. These are of the form ߪ where 2026 is the hex + * representation of the UNICODE index (in this case, UNICODE + * "Horizontal Ellipsis", or 133 in in ASCII8). + * + * Implementation note: Since this is one of the most-used functions + * in all of libfaim, it is written with performance in mind. As such, + * it is not as clear as it could be in respect to how this message is + * supposed to be layed out. Most obviously, tlvlists should be used + * instead of writing out the bytes manually. + * + * XXX more precise verification that we never send SNACs larger than 8192 + * XXX check SNAC size for multipart + * + */ +int aim_send_im_ext(aim_session_t *sess, struct aim_sendimext_args *args) +{ + static const guint8 deffeatures[] = { + 0x01, 0x01, 0x01, 0x02 + }; + aim_conn_t *conn; + int i, msgtlvlen; + aim_frame_t *fr; + aim_snacid_t snacid; + + if (!sess || !(conn = aim_conn_findbygroup(sess, 0x0004))) + return -EINVAL; + + if (!args) + return -EINVAL; + + if (args->flags & AIM_IMFLAGS_MULTIPART) { + if (args->mpmsg->numparts <= 0) + return -EINVAL; + } else { + if (!args->msg || (args->msglen <= 0)) + return -EINVAL; + + if (args->msglen >= MAXMSGLEN) + return -E2BIG; + } + + /* Painfully calculate the size of the message TLV */ + msgtlvlen = 1 + 1; /* 0501 */ + + if (args->flags & AIM_IMFLAGS_CUSTOMFEATURES) + msgtlvlen += 2 + args->featureslen; + else + msgtlvlen += 2 + sizeof(deffeatures); + + if (args->flags & AIM_IMFLAGS_MULTIPART) { + aim_mpmsg_section_t *sec; + + for (sec = args->mpmsg->parts; sec; sec = sec->next) { + msgtlvlen += 2 /* 0101 */ + 2 /* block len */; + msgtlvlen += 4 /* charset */ + sec->datalen; + } + + } else { + msgtlvlen += 2 /* 0101 */ + 2 /* block len */; + msgtlvlen += 4 /* charset */ + args->msglen; + } + + + if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, msgtlvlen+128))) + return -ENOMEM; + + /* XXX should be optional */ + snacid = aim_cachesnac(sess, 0x0004, 0x0006, 0x0000, args->destsn, strlen(args->destsn)+1); + aim_putsnac(&fr->data, 0x0004, 0x0006, 0x0000, snacid); + + /* + * Generate a random message cookie + * + * We could cache these like we do SNAC IDs. (In fact, it + * might be a good idea.) In the message error functions, + * the 8byte message cookie is returned as well as the + * SNAC ID. + * + */ + for (i = 0; i < 8; i++) + aimbs_put8(&fr->data, (guint8) rand()); + + /* + * Channel ID + */ + aimbs_put16(&fr->data, 0x0001); + + /* + * Destination SN (prepended with byte length) + */ + aimbs_put8(&fr->data, strlen(args->destsn)); + aimbs_putraw(&fr->data, (guint8 *)args->destsn, strlen(args->destsn)); + + /* + * Message TLV (type 2). + */ + aimbs_put16(&fr->data, 0x0002); + aimbs_put16(&fr->data, msgtlvlen); + + /* + * Features + * + */ + aimbs_put8(&fr->data, 0x05); + aimbs_put8(&fr->data, 0x01); + + if (args->flags & AIM_IMFLAGS_CUSTOMFEATURES) { + aimbs_put16(&fr->data, args->featureslen); + aimbs_putraw(&fr->data, args->features, args->featureslen); + } else { + aimbs_put16(&fr->data, sizeof(deffeatures)); + aimbs_putraw(&fr->data, deffeatures, sizeof(deffeatures)); + } + + if (args->flags & AIM_IMFLAGS_MULTIPART) { + aim_mpmsg_section_t *sec; + + for (sec = args->mpmsg->parts; sec; sec = sec->next) { + aimbs_put16(&fr->data, 0x0101); + aimbs_put16(&fr->data, sec->datalen + 4); + aimbs_put16(&fr->data, sec->charset); + aimbs_put16(&fr->data, sec->charsubset); + aimbs_putraw(&fr->data, sec->data, sec->datalen); + } + + } else { + + aimbs_put16(&fr->data, 0x0101); + + /* + * Message block length. + */ + aimbs_put16(&fr->data, args->msglen + 0x04); + + /* + * Character set. + */ + if (args->flags & AIM_IMFLAGS_CUSTOMCHARSET) { + + aimbs_put16(&fr->data, args->charset); + aimbs_put16(&fr->data, args->charsubset); + + } else { + if (args->flags & AIM_IMFLAGS_UNICODE) + aimbs_put16(&fr->data, 0x0002); + else if (args->flags & AIM_IMFLAGS_ISO_8859_1) + aimbs_put16(&fr->data, 0x0003); + else + aimbs_put16(&fr->data, 0x0000); + + aimbs_put16(&fr->data, 0x0000); + } + + /* + * Message. Not terminated. + */ + aimbs_putraw(&fr->data, (guint8 *)args->msg, args->msglen); + } + + /* + * Set the Request Acknowledge flag. + */ + if (args->flags & AIM_IMFLAGS_ACK) { + aimbs_put16(&fr->data, 0x0003); + aimbs_put16(&fr->data, 0x0000); + } + + /* + * Set the Autoresponse flag. + */ + if (args->flags & AIM_IMFLAGS_AWAY) { + aimbs_put16(&fr->data, 0x0004); + aimbs_put16(&fr->data, 0x0000); + } + + if (args->flags & AIM_IMFLAGS_OFFLINE) { + aimbs_put16(&fr->data, 0x0006); + aimbs_put16(&fr->data, 0x0000); + } + + /* + * Set the I HAVE A REALLY PURTY ICON flag. + */ + if (args->flags & AIM_IMFLAGS_HASICON) { + aimbs_put16(&fr->data, 0x0008); + aimbs_put16(&fr->data, 0x000c); + aimbs_put32(&fr->data, args->iconlen); + aimbs_put16(&fr->data, 0x0001); + aimbs_put16(&fr->data, args->iconsum); + aimbs_put32(&fr->data, args->iconstamp); + } + + /* + * Set the Buddy Icon Requested flag. + */ + if (args->flags & AIM_IMFLAGS_BUDDYREQ) { + aimbs_put16(&fr->data, 0x0009); + aimbs_put16(&fr->data, 0x0000); + } + + aim_tx_enqueue(sess, fr); + + if (!(sess->flags & AIM_SESS_FLAGS_DONTTIMEOUTONICBM)) + aim_cleansnacs(sess, 60); /* clean out SNACs over 60sec old */ + + return 0; +} + +/* + * Simple wrapper for aim_send_im_ext() + * + * You cannot use aim_send_im if you need the HASICON flag. You must + * use aim_send_im_ext directly for that. + * + * aim_send_im also cannot be used if you require UNICODE messages, because + * that requires an explicit message length. Use aim_send_im_ext(). + * + */ +int aim_send_im(aim_session_t *sess, const char *destsn, guint16 flags, const char *msg) +{ + struct aim_sendimext_args args; + + args.destsn = destsn; + args.flags = flags; + args.msg = msg; + args.msglen = strlen(msg); + + /* Make these don't get set by accident -- they need aim_send_im_ext */ + args.flags &= ~(AIM_IMFLAGS_CUSTOMFEATURES | AIM_IMFLAGS_HASICON | AIM_IMFLAGS_MULTIPART); + + return aim_send_im_ext(sess, &args); +} + +/* + * This is also performance sensitive. (If you can believe it...) + * + */ +int aim_send_icon(aim_session_t *sess, const char *sn, const guint8 *icon, int iconlen, time_t stamp, guint16 iconsum) +{ + aim_conn_t *conn; + int i; + guint8 ck[8]; + aim_frame_t *fr; + aim_snacid_t snacid; + + if (!sess || !(conn = aim_conn_findbygroup(sess, 0x0004))) + return -EINVAL; + + if (!sn || !icon || (iconlen <= 0) || (iconlen >= MAXICONLEN)) + return -EINVAL; + + for (i = 0; i < 8; i++) + aimutil_put8(ck+i, (guint8) rand()); + + if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 10+8+2+1+strlen(sn)+2+2+2+8+16+2+2+2+2+2+2+2+4+4+4+iconlen+strlen(AIM_ICONIDENT)+2+2))) + return -ENOMEM; + + snacid = aim_cachesnac(sess, 0x0004, 0x0006, 0x0000, NULL, 0); + aim_putsnac(&fr->data, 0x0004, 0x0006, 0x0000, snacid); + + /* + * Cookie + */ + aimbs_putraw(&fr->data, ck, 8); + + /* + * Channel (2) + */ + aimbs_put16(&fr->data, 0x0002); + + /* + * Dest sn + */ + aimbs_put8(&fr->data, strlen(sn)); + aimbs_putraw(&fr->data, (guint8 *)sn, strlen(sn)); + + /* + * TLV t(0005) + * + * Encompasses everything below. + */ + aimbs_put16(&fr->data, 0x0005); + aimbs_put16(&fr->data, 2+8+16+6+4+4+iconlen+4+4+4+strlen(AIM_ICONIDENT)); + + aimbs_put16(&fr->data, 0x0000); + aimbs_putraw(&fr->data, ck, 8); + aim_putcap(&fr->data, AIM_CAPS_BUDDYICON); + + /* TLV t(000a) */ + aimbs_put16(&fr->data, 0x000a); + aimbs_put16(&fr->data, 0x0002); + aimbs_put16(&fr->data, 0x0001); + + /* TLV t(000f) */ + aimbs_put16(&fr->data, 0x000f); + aimbs_put16(&fr->data, 0x0000); + + /* TLV t(2711) */ + aimbs_put16(&fr->data, 0x2711); + aimbs_put16(&fr->data, 4+4+4+iconlen+strlen(AIM_ICONIDENT)); + aimbs_put16(&fr->data, 0x0000); + aimbs_put16(&fr->data, iconsum); + aimbs_put32(&fr->data, iconlen); + aimbs_put32(&fr->data, stamp); + aimbs_putraw(&fr->data, icon, iconlen); + aimbs_putraw(&fr->data, (guint8 *)AIM_ICONIDENT, strlen(AIM_ICONIDENT)); + + /* TLV t(0003) */ + aimbs_put16(&fr->data, 0x0003); + aimbs_put16(&fr->data, 0x0000); + + aim_tx_enqueue(sess, fr); + + return 0; +} + +/* + * This only works for ICQ 2001b (thats 2001 not 2000). Better, only + * send it to clients advertising the RTF capability. In fact, if you send + * it to a client that doesn't support that capability, the server will gladly + * bounce it back to you. + * + * You'd think this would be in icq.c, but, well, I'm trying to stick with + * the one-group-per-file scheme as much as possible. This could easily + * be an exception, since Rendezvous IMs are external of the Oscar core, + * and therefore are undefined. Really I just need to think of a good way to + * make an interface similar to what AOL actually uses. But I'm not using COM. + * + */ +int aim_send_rtfmsg(aim_session_t *sess, struct aim_sendrtfmsg_args *args) +{ + const char rtfcap[] = {"{97B12751-243C-4334-AD22-D6ABF73F1492}"}; /* AIM_CAPS_ICQRTF capability in string form */ + aim_conn_t *conn; + int i; + guint8 ck[8]; + aim_frame_t *fr; + aim_snacid_t snacid; + int servdatalen; + + if (!sess || !(conn = aim_conn_findbygroup(sess, 0x0004))) + return -EINVAL; + + if (!args || !args->destsn || !args->rtfmsg) + return -EINVAL; + + servdatalen = 2+2+16+2+4+1+2 + 2+2+4+4+4 + 2+4+2+strlen(args->rtfmsg)+1 + 4+4+4+strlen(rtfcap)+1; + + for (i = 0; i < 8; i++) + aimutil_put8(ck+i, (guint8) rand()); + + if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 10+128+servdatalen))) + return -ENOMEM; + + snacid = aim_cachesnac(sess, 0x0004, 0x0006, 0x0000, NULL, 0); + aim_putsnac(&fr->data, 0x0004, 0x0006, 0x0000, snacid); + + /* + * Cookie + */ + aimbs_putraw(&fr->data, ck, 8); + + /* + * Channel (2) + */ + aimbs_put16(&fr->data, 0x0002); + + /* + * Dest sn + */ + aimbs_put8(&fr->data, strlen(args->destsn)); + aimbs_putraw(&fr->data, (guint8 *)args->destsn, strlen(args->destsn)); + + /* + * TLV t(0005) + * + * Encompasses everything below. + */ + aimbs_put16(&fr->data, 0x0005); + aimbs_put16(&fr->data, 2+8+16 + 2+2+2 + 2+2 + 2+2+servdatalen); + + aimbs_put16(&fr->data, 0x0000); + aimbs_putraw(&fr->data, ck, 8); + aim_putcap(&fr->data, AIM_CAPS_ICQSERVERRELAY); + + /* + * t(000a) l(0002) v(0001) + */ + aimbs_put16(&fr->data, 0x000a); + aimbs_put16(&fr->data, 0x0002); + aimbs_put16(&fr->data, 0x0001); + + /* + * t(000f) l(0000) v() + */ + aimbs_put16(&fr->data, 0x000f); + aimbs_put16(&fr->data, 0x0000); + + /* + * Service Data TLV + */ + aimbs_put16(&fr->data, 0x2711); + aimbs_put16(&fr->data, servdatalen); + + aimbs_putle16(&fr->data, 11 + 16 /* 11 + (sizeof CLSID) */); + aimbs_putle16(&fr->data, 9); + aim_putcap(&fr->data, AIM_CAPS_EMPTY); + aimbs_putle16(&fr->data, 0); + aimbs_putle32(&fr->data, 0); + aimbs_putle8(&fr->data, 0); + aimbs_putle16(&fr->data, 0x03ea); /* trid1 */ + + aimbs_putle16(&fr->data, 14); + aimbs_putle16(&fr->data, 0x03eb); /* trid2 */ + aimbs_putle32(&fr->data, 0); + aimbs_putle32(&fr->data, 0); + aimbs_putle32(&fr->data, 0); + + aimbs_putle16(&fr->data, 0x0001); + aimbs_putle32(&fr->data, 0); + aimbs_putle16(&fr->data, strlen(args->rtfmsg)+1); + aimbs_putraw(&fr->data, (guint8 *)args->rtfmsg, strlen(args->rtfmsg)+1); + + aimbs_putle32(&fr->data, args->fgcolor); + aimbs_putle32(&fr->data, args->bgcolor); + aimbs_putle32(&fr->data, strlen(rtfcap)+1); + aimbs_putraw(&fr->data, (guint8 *)rtfcap, strlen(rtfcap)+1); + + aim_tx_enqueue(sess, fr); + + return 0; +} + +int aim_request_directim(aim_session_t *sess, const char *destsn, guint8 *ip, guint16 port, guint8 *ckret) +{ + aim_conn_t *conn; + guint8 ck[8]; + aim_frame_t *fr; + aim_snacid_t snacid; + aim_tlvlist_t *tl = NULL, *itl = NULL; + int hdrlen, i; + guint8 *hdr; + aim_bstream_t hdrbs; + + if (!sess || !(conn = aim_conn_findbygroup(sess, 0x0004))) + return -EINVAL; + + if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 256+strlen(destsn)))) + return -ENOMEM; + + snacid = aim_cachesnac(sess, 0x0004, 0x0006, 0x0000, NULL, 0); + aim_putsnac(&fr->data, 0x0004, 0x0006, 0x0000, snacid); + + /* + * Generate a random message cookie + * + * This cookie needs to be alphanumeric and NULL-terminated to be + * TOC-compatible. + * + * XXX have I mentioned these should be generated in msgcookie.c? + * + */ + for (i = 0; i < 7; i++) + ck[i] = 0x30 + ((guint8) rand() % 10); + ck[7] = '\0'; + + if (ckret) + memcpy(ckret, ck, 8); + + /* Cookie */ + aimbs_putraw(&fr->data, ck, 8); + + /* Channel */ + aimbs_put16(&fr->data, 0x0002); + + /* Destination SN */ + aimbs_put8(&fr->data, strlen(destsn)); + aimbs_putraw(&fr->data, (guint8 *)destsn, strlen(destsn)); + + aim_addtlvtochain_noval(&tl, 0x0003); + + hdrlen = 2+8+16+6+8+6+4; + hdr = g_malloc(hdrlen); + aim_bstream_init(&hdrbs, hdr, hdrlen); + + aimbs_put16(&hdrbs, 0x0000); + aimbs_putraw(&hdrbs, ck, 8); + aim_putcap(&hdrbs, AIM_CAPS_IMIMAGE); + + aim_addtlvtochain16(&itl, 0x000a, 0x0001); + aim_addtlvtochain_raw(&itl, 0x0003, 4, ip); + aim_addtlvtochain16(&itl, 0x0005, port); + aim_addtlvtochain_noval(&itl, 0x000f); + + aim_writetlvchain(&hdrbs, &itl); + + aim_addtlvtochain_raw(&tl, 0x0005, aim_bstream_curpos(&hdrbs), hdr); + + aim_writetlvchain(&fr->data, &tl); + + g_free(hdr); + aim_freetlvchain(&itl); + aim_freetlvchain(&tl); + + aim_tx_enqueue(sess, fr); + + return 0; +} + +int aim_request_sendfile(aim_session_t *sess, const char *sn, const char *filename, guint16 numfiles, guint32 totsize, guint8 *ip, guint16 port, guint8 *ckret) +{ + aim_conn_t *conn; + int i; + guint8 ck[8]; + aim_frame_t *fr; + aim_snacid_t snacid; + + if (!sess || !(conn = aim_conn_findbygroup(sess, 0x0004))) + return -EINVAL; + + if (!sn || !filename) + return -EINVAL; + + if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 10+8+2+1+strlen(sn)+2+2+2+8+16+6+8+6+4+2+2+2+2+4+strlen(filename)+4))) + return -ENOMEM; + + snacid = aim_cachesnac(sess, 0x0004, 0x0006, 0x0000, NULL, 0); + aim_putsnac(&fr->data, 0x0004, 0x0006, 0x0000, snacid); + + for (i = 0; i < 7; i++) + aimutil_put8(ck+i, 0x30 + ((guint8) rand() % 10)); + ck[7] = '\0'; + + if (ckret) + memcpy(ckret, ck, 8); + + /* + * Cookie + */ + aimbs_putraw(&fr->data, ck, 8); + + /* + * Channel (2) + */ + aimbs_put16(&fr->data, 0x0002); + + /* + * Dest sn + */ + aimbs_put8(&fr->data, strlen(sn)); + aimbs_putraw(&fr->data, (guint8 *)sn, strlen(sn)); + + /* + * TLV t(0005) + * + * Encompasses everything below. Gee. + */ + aimbs_put16(&fr->data, 0x0005); + aimbs_put16(&fr->data, 2+8+16+6+8+6+4+2+2+2+2+4+strlen(filename)+4); + + aimbs_put16(&fr->data, 0x0000); + aimbs_putraw(&fr->data, ck, 8); + aim_putcap(&fr->data, AIM_CAPS_SENDFILE); + + /* TLV t(000a) */ + aimbs_put16(&fr->data, 0x000a); + aimbs_put16(&fr->data, 0x0002); + aimbs_put16(&fr->data, 0x0001); + + /* TLV t(0003) (IP) */ + aimbs_put16(&fr->data, 0x0003); + aimbs_put16(&fr->data, 0x0004); + aimbs_putraw(&fr->data, ip, 4); + + /* TLV t(0005) (port) */ + aimbs_put16(&fr->data, 0x0005); + aimbs_put16(&fr->data, 0x0002); + aimbs_put16(&fr->data, port); + + /* TLV t(000f) */ + aimbs_put16(&fr->data, 0x000f); + aimbs_put16(&fr->data, 0x0000); + + /* TLV t(2711) */ + aimbs_put16(&fr->data, 0x2711); + aimbs_put16(&fr->data, 2+2+4+strlen(filename)+4); + + /* ? */ + aimbs_put16(&fr->data, 0x0001); + aimbs_put16(&fr->data, numfiles); + aimbs_put32(&fr->data, totsize); + aimbs_putraw(&fr->data, (guint8 *)filename, strlen(filename)); + + /* ? */ + aimbs_put32(&fr->data, 0x00000000); + + aim_tx_enqueue(sess, fr); + + return 0; +} + +/** + * Request the status message of the given ICQ user. + * + * @param sess The oscar session. + * @param sn The UIN of the user of whom you wish to request info. + * @param type The type of info you wish to request. This should be the current + * state of the user, as one of the AIM_ICQ_STATE_* defines. + * @return Return 0 if no errors, otherwise return the error number. + */ +int aim_send_im_ch2_geticqmessage(aim_session_t *sess, const char *sn, int type) +{ + aim_conn_t *conn; + int i; + guint8 ck[8]; + aim_frame_t *fr; + aim_snacid_t snacid; + + if (!sess || !(conn = aim_conn_findbygroup(sess, 0x0004)) || !sn) + return -EINVAL; + + for (i = 0; i < 8; i++) + aimutil_put8(ck+i, (guint8) rand()); + + if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 10+8+2+1+strlen(sn) + 4+0x5e + 4))) + return -ENOMEM; + + snacid = aim_cachesnac(sess, 0x0004, 0x0006, 0x0000, NULL, 0); + aim_putsnac(&fr->data, 0x0004, 0x0006, 0x0000, snacid); + + /* Cookie */ + aimbs_putraw(&fr->data, ck, 8); + + /* Channel (2) */ + aimbs_put16(&fr->data, 0x0002); + + /* Dest sn */ + aimbs_put8(&fr->data, strlen(sn)); + aimbs_putraw(&fr->data, (guint8 *)sn, strlen(sn)); + + /* TLV t(0005) - Encompasses almost everything below. */ + aimbs_put16(&fr->data, 0x0005); /* T */ + aimbs_put16(&fr->data, 0x005e); /* L */ + { /* V */ + aimbs_put16(&fr->data, 0x0000); + + /* Cookie */ + aimbs_putraw(&fr->data, ck, 8); + + /* Put the 16 byte server relay capability */ + aim_putcap(&fr->data, AIM_CAPS_ICQSERVERRELAY); + + /* TLV t(000a) */ + aimbs_put16(&fr->data, 0x000a); + aimbs_put16(&fr->data, 0x0002); + aimbs_put16(&fr->data, 0x0001); + + /* TLV t(000f) */ + aimbs_put16(&fr->data, 0x000f); + aimbs_put16(&fr->data, 0x0000); + + /* TLV t(2711) */ + aimbs_put16(&fr->data, 0x2711); + aimbs_put16(&fr->data, 0x0036); + { /* V */ + aimbs_putle16(&fr->data, 0x001b); /* L */ + aimbs_putle16(&fr->data, 0x0008); /* AAA - Protocol version */ + aimbs_putle32(&fr->data, 0x00000000); /* Unknown */ + aimbs_putle32(&fr->data, 0x00000000); /* Unknown */ + aimbs_putle32(&fr->data, 0x00000000); /* Unknown */ + aimbs_putle32(&fr->data, 0x00000000); /* Unknown */ + aimbs_putle16(&fr->data, 0x0000); /* Unknown */ + aimbs_putle16(&fr->data, 0x0003); /* Client features? */ + aimbs_putle16(&fr->data, 0x0000); /* Unknown */ + aimbs_putle8(&fr->data, 0x00); /* Unkizown */ + aimbs_putle16(&fr->data, 0xffff); /* Sequence number? XXX - This should decrement by 1 with each request */ + + aimbs_putle16(&fr->data, 0x000e); /* L */ + aimbs_putle16(&fr->data, 0xffff); /* Sequence number? XXX - This should decrement by 1 with each request */ + aimbs_putle32(&fr->data, 0x00000000); /* Unknown */ + aimbs_putle32(&fr->data, 0x00000000); /* Unknown */ + aimbs_putle32(&fr->data, 0x00000000); /* Unknown */ + + /* The type of status message being requested */ + if (type & AIM_ICQ_STATE_CHAT) + aimbs_putle16(&fr->data, 0x03ec); + else if(type & AIM_ICQ_STATE_DND) + aimbs_putle16(&fr->data, 0x03eb); + else if(type & AIM_ICQ_STATE_OUT) + aimbs_putle16(&fr->data, 0x03ea); + else if(type & AIM_ICQ_STATE_BUSY) + aimbs_putle16(&fr->data, 0x03e9); + else if(type & AIM_ICQ_STATE_AWAY) + aimbs_putle16(&fr->data, 0x03e8); + + aimbs_putle16(&fr->data, 0x0000); /* Status? */ + aimbs_putle16(&fr->data, 0x0001); /* Priority of this message? */ + aimbs_putle16(&fr->data, 0x0001); /* L? */ + aimbs_putle8(&fr->data, 0x00); /* Null termination? */ + } /* End TLV t(2711) */ + } /* End TLV t(0005) */ + + /* TLV t(0003) */ + aimbs_put16(&fr->data, 0x0003); + aimbs_put16(&fr->data, 0x0000); + + aim_tx_enqueue(sess, fr); + + return 0; +} + +/** + * answers status message requests + * @param sess the oscar session + * @param sender the guy whos asking + * @param cookie message id which we are answering for + * @param message away message + * @param state our current away state the way icq requests it (0xE8 for away, 0xE9 occupied, ...) + * @return 0 if no error + */ +int aim_send_im_ch2_statusmessage(aim_session_t *sess, const char *sender, const guint8 *cookie, + const char *message, const guint8 state, const guint16 dc) +{ + aim_conn_t *conn; + aim_frame_t *fr; + aim_snacid_t snacid; + + if (!sess || !(conn = aim_conn_findbygroup(sess, 0x0004))) + return -EINVAL; + + if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, + 10+8+2+1+strlen(sender)+2+0x1d+0x10+9+strlen(message)+1))) + return -ENOMEM; + + snacid = aim_cachesnac(sess, 0x0004, 0x000b, 0x0000, NULL, 0); + aim_putsnac(&fr->data, 0x0004, 0x000b, 0x0000, snacid); + + aimbs_putraw(&fr->data, cookie, 8); + + aimbs_put16(&fr->data, 0x0002); /* channel */ + aimbs_put8(&fr->data, strlen(sender)); + aimbs_putraw(&fr->data, (guint8 *)sender, strlen(sender)); + + aimbs_put16(&fr->data, 0x0003); /* reason: channel specific */ + + aimbs_putle16(&fr->data, 0x001b); /* length of data SEQ1 */ + aimbs_putle16(&fr->data, 0x0008); /* protocol version */ + + aimbs_putle32(&fr->data, 0x0000); /* no plugin -> 16 times 0x00 */ + aimbs_putle32(&fr->data, 0x0000); + aimbs_putle32(&fr->data, 0x0000); + aimbs_putle32(&fr->data, 0x0000); + + aimbs_putle16(&fr->data, 0x0000); /* unknown */ + aimbs_putle32(&fr->data, 0x0003); /* client features */ + aimbs_putle8(&fr->data, 0x00); /* unknown */ + aimbs_putle16(&fr->data, dc); /* Sequence number? XXX - This should decrement by 1 with each request */ + /* end of SEQ1 */ + + aimbs_putle16(&fr->data, 0x000e); /* Length of SEQ2 */ + aimbs_putle16(&fr->data, dc); /* Sequence number? same as above + * XXX - This should decrement by 1 with each request */ + aimbs_putle32(&fr->data, 0x00000000); /* Unknown */ + aimbs_putle32(&fr->data, 0x00000000); /* Unknown */ + aimbs_putle32(&fr->data, 0x00000000); /* Unknown */ + /* end of SEQ2 */ + + /* now for the real fun */ + aimbs_putle8(&fr->data, state); /* away state */ + aimbs_putle8(&fr->data, 0x03); /* msg-flag: 03 for states */ + aimbs_putle16(&fr->data, 0x0000); /* status code ? */ + aimbs_putle16(&fr->data, 0x0000); /* priority code */ + aimbs_putle16(&fr->data, strlen(message) + 1); /* message length + termination */ + aimbs_putraw(&fr->data, (guint8 *) message, strlen(message) + 1); /* null terminated string */ + + aim_tx_enqueue(sess, fr); + + + return 0; +} + + +static int outgoingim(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs) +{ + int i, ret = 0; + aim_rxcallback_t userfunc; + guint8 cookie[8]; + guint16 channel; + aim_tlvlist_t *tlvlist; + char *sn; + int snlen; + guint16 icbmflags = 0; + guint8 flag1 = 0, flag2 = 0; + char *msg = NULL; + aim_tlv_t *msgblock; + + /* ICBM Cookie. */ + for (i = 0; i < 8; i++) + cookie[i] = aimbs_get8(bs); + + /* Channel ID */ + channel = aimbs_get16(bs); + + if (channel != 0x01) { + imcb_error(sess->aux_data, "icbm: ICBM received on unsupported channel. Ignoring."); + return 0; + } + + snlen = aimbs_get8(bs); + sn = aimbs_getstr(bs, snlen); + + tlvlist = aim_readtlvchain(bs); + + if (aim_gettlv(tlvlist, 0x0003, 1)) + icbmflags |= AIM_IMFLAGS_ACK; + if (aim_gettlv(tlvlist, 0x0004, 1)) + icbmflags |= AIM_IMFLAGS_AWAY; + + if ((msgblock = aim_gettlv(tlvlist, 0x0002, 1))) { + aim_bstream_t mbs; + int featurelen, msglen; + + aim_bstream_init(&mbs, msgblock->value, msgblock->length); + + aimbs_get8(&mbs); + aimbs_get8(&mbs); + for (featurelen = aimbs_get16(&mbs); featurelen; featurelen--) + aimbs_get8(&mbs); + aimbs_get8(&mbs); + aimbs_get8(&mbs); + + msglen = aimbs_get16(&mbs) - 4; /* final block length */ + + flag1 = aimbs_get16(&mbs); + flag2 = aimbs_get16(&mbs); + + msg = aimbs_getstr(&mbs, msglen); + } + + if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) + ret = userfunc(sess, rx, channel, sn, msg, icbmflags, flag1, flag2); + + g_free(sn); + aim_freetlvchain(&tlvlist); + + return ret; +} + +/* + * Ahh, the joys of nearly ridiculous over-engineering. + * + * Not only do AIM ICBM's support multiple channels. Not only do they + * support multiple character sets. But they support multiple character + * sets / encodings within the same ICBM. + * + * These multipart messages allow for complex space savings techniques, which + * seem utterly unnecessary by today's standards. In fact, there is only + * one client still in popular use that still uses this method: AOL for the + * Macintosh, Version 5.0. Obscure, yes, I know. + * + * In modern (non-"legacy") clients, if the user tries to send a character + * that is not ISO-8859-1 or ASCII, the client will send the entire message + * as UNICODE, meaning that every character in the message will occupy the + * full 16 bit UNICODE field, even if the high order byte would be zero. + * Multipart messages prevent this wasted space by allowing the client to + * only send the characters in UNICODE that need to be sent that way, and + * the rest of the message can be sent in whatever the native character + * set is (probably ASCII). + * + * An important note is that sections will be displayed in the order that + * they appear in the ICBM. There is no facility for merging or rearranging + * sections at run time. So if you have, say, ASCII then UNICODE then ASCII, + * you must supply two ASCII sections with a UNICODE in the middle, and incur + * the associated overhead. + * + * Normally I would have laughed and given a firm 'no' to supporting this + * seldom-used feature, but something is attracting me to it. In the future, + * it may be possible to abuse this to send mixed-media messages to other + * open source clients (like encryption or something) -- see faimtest for + * examples of how to do this. + * + * I would definitly recommend avoiding this feature unless you really + * know what you are doing, and/or you have something neat to do with it. + * + */ +int aim_mpmsg_init(aim_session_t *sess, aim_mpmsg_t *mpm) +{ + + memset(mpm, 0, sizeof(aim_mpmsg_t)); + + return 0; +} + +static int mpmsg_addsection(aim_session_t *sess, aim_mpmsg_t *mpm, guint16 charset, guint16 charsubset, guint8 *data, guint16 datalen) +{ + aim_mpmsg_section_t *sec; + + if (!(sec = g_new0(aim_mpmsg_section_t,1))) + return -1; + + sec->charset = charset; + sec->charsubset = charsubset; + sec->data = data; + sec->datalen = datalen; + sec->next = NULL; + + if (!mpm->parts) + mpm->parts = sec; + else { + aim_mpmsg_section_t *cur; + + for (cur = mpm->parts; cur->next; cur = cur->next) + ; + cur->next = sec; + } + + mpm->numparts++; + + return 0; +} + +int aim_mpmsg_addraw(aim_session_t *sess, aim_mpmsg_t *mpm, guint16 charset, guint16 charsubset, const guint8 *data, guint16 datalen) +{ + guint8 *dup; + + if (!(dup = g_malloc(datalen))) + return -1; + memcpy(dup, data, datalen); + + if (mpmsg_addsection(sess, mpm, charset, charsubset, dup, datalen) == -1) { + g_free(dup); + return -1; + } + + return 0; +} + +/* XXX should provide a way of saying ISO-8859-1 specifically */ +int aim_mpmsg_addascii(aim_session_t *sess, aim_mpmsg_t *mpm, const char *ascii) +{ + char *dup; + + if (!(dup = g_strdup(ascii))) + return -1; + + if (mpmsg_addsection(sess, mpm, 0x0000, 0x0000, (guint8 *)dup, (guint16) strlen(ascii)) == -1) { + g_free(dup); + return -1; + } + + return 0; +} + +int aim_mpmsg_addunicode(aim_session_t *sess, aim_mpmsg_t *mpm, const guint16 *unicode, guint16 unicodelen) +{ + guint8 *buf; + aim_bstream_t bs; + int i; + + if (!(buf = g_malloc(unicodelen * 2))) + return -1; + + aim_bstream_init(&bs, buf, unicodelen * 2); + + /* We assume unicode is in /host/ byte order -- convert to network */ + for (i = 0; i < unicodelen; i++) + aimbs_put16(&bs, unicode[i]); + + if (mpmsg_addsection(sess, mpm, 0x0002, 0x0000, buf, aim_bstream_curpos(&bs)) == -1) { + g_free(buf); + return -1; + } + + return 0; +} + +void aim_mpmsg_free(aim_session_t *sess, aim_mpmsg_t *mpm) +{ + aim_mpmsg_section_t *cur; + + for (cur = mpm->parts; cur; ) { + aim_mpmsg_section_t *tmp; + + tmp = cur->next; + g_free(cur->data); + g_free(cur); + cur = tmp; + } + + mpm->numparts = 0; + mpm->parts = NULL; + + return; +} + +/* + * Start by building the multipart structures, then pick the first + * human-readable section and stuff it into args->msg so no one gets + * suspicious. + * + */ +static int incomingim_ch1_parsemsgs(aim_session_t *sess, guint8 *data, int len, struct aim_incomingim_ch1_args *args) +{ + static const guint16 charsetpri[] = { + 0x0000, /* ASCII first */ + 0x0003, /* then ISO-8859-1 */ + 0x0002, /* UNICODE as last resort */ + }; + static const int charsetpricount = 3; + int i; + aim_bstream_t mbs; + aim_mpmsg_section_t *sec; + + aim_bstream_init(&mbs, data, len); + + while (aim_bstream_empty(&mbs)) { + guint16 msglen, flag1, flag2; + char *msgbuf; + + aimbs_get8(&mbs); /* 01 */ + aimbs_get8(&mbs); /* 01 */ + + /* Message string length, including character set info. */ + msglen = aimbs_get16(&mbs); + + /* Character set info */ + flag1 = aimbs_get16(&mbs); + flag2 = aimbs_get16(&mbs); + + /* Message. */ + msglen -= 4; + + /* + * For now, we don't care what the encoding is. Just copy + * it into a multipart struct and deal with it later. However, + * always pad the ending with a NULL. This makes it easier + * to treat ASCII sections as strings. It won't matter for + * UNICODE or binary data, as you should never read past + * the specified data length, which will not include the pad. + * + * XXX There's an API bug here. For sending, the UNICODE is + * given in host byte order (aim_mpmsg_addunicode), but here + * the received messages are given in network byte order. + * + */ + msgbuf = aimbs_getstr(&mbs, msglen); + mpmsg_addsection(sess, &args->mpmsg, flag1, flag2, (guint8 *)msgbuf, (guint16) msglen); + + } /* while */ + + args->icbmflags |= AIM_IMFLAGS_MULTIPART; /* always set */ + + /* + * Clients that support multiparts should never use args->msg, as it + * will point to an arbitrary section. + * + * Here, we attempt to provide clients that do not support multipart + * messages with something to look at -- hopefully a human-readable + * string. But, failing that, a UNICODE message, or nothing at all. + * + * Which means that even if args->msg is NULL, it does not mean the + * message was blank. + * + */ + for (i = 0; i < charsetpricount; i++) { + for (sec = args->mpmsg.parts; sec; sec = sec->next) { + + if (sec->charset != charsetpri[i]) + continue; + + /* Great. We found one. Fill it in. */ + args->charset = sec->charset; + args->charsubset = sec->charsubset; + args->icbmflags |= AIM_IMFLAGS_CUSTOMCHARSET; + + /* Set up the simple flags */ + if (args->charset == 0x0000) + ; /* ASCII */ + else if (args->charset == 0x0002) + args->icbmflags |= AIM_IMFLAGS_UNICODE; + else if (args->charset == 0x0003) + args->icbmflags |= AIM_IMFLAGS_ISO_8859_1; + else if (args->charset == 0xffff) + ; /* no encoding (yeep!) */ + + if (args->charsubset == 0x0000) + ; /* standard subencoding? */ + else if (args->charsubset == 0x000b) + args->icbmflags |= AIM_IMFLAGS_SUBENC_MACINTOSH; + else if (args->charsubset == 0xffff) + ; /* no subencoding */ +#if 0 + /* XXX this isn't really necesary... */ + if ( ((args.flag1 != 0x0000) && + (args.flag1 != 0x0002) && + (args.flag1 != 0x0003) && + (args.flag1 != 0xffff)) || + ((args.flag2 != 0x0000) && + (args.flag2 != 0x000b) && + (args.flag2 != 0xffff))) { + faimdprintf(sess, 0, "icbm: **warning: encoding flags are being used! {%04x, %04x}\n", args.flag1, args.flag2); + } +#endif + + args->msg = (char *)sec->data; + args->msglen = sec->datalen; + + return 0; + } + } + + /* No human-readable sections found. Oh well. */ + args->charset = args->charsubset = 0xffff; + args->msg = NULL; + args->msglen = 0; + + return 0; +} + +static int incomingim_ch1(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, guint16 channel, aim_userinfo_t *userinfo, aim_bstream_t *bs, guint8 *cookie) +{ + guint16 type, length; + aim_rxcallback_t userfunc; + int ret = 0; + struct aim_incomingim_ch1_args args; + int endpos; + + memset(&args, 0, sizeof(args)); + + aim_mpmsg_init(sess, &args.mpmsg); + + /* + * This used to be done using tlvchains. For performance reasons, + * I've changed it to process the TLVs in-place. This avoids lots + * of per-IM memory allocations. + */ + while (aim_bstream_empty(bs)) { + + type = aimbs_get16(bs); + length = aimbs_get16(bs); + + endpos = aim_bstream_curpos(bs) + length; + + if (type == 0x0002) { /* Message Block */ + + /* + * This TLV consists of the following: + * - 0501 -- Unknown + * - Features: Don't know how to interpret these + * - 0101 -- Unknown + * - Message + * + */ + + aimbs_get8(bs); /* 05 */ + aimbs_get8(bs); /* 01 */ + + args.featureslen = aimbs_get16(bs); + /* XXX XXX this is all evil! */ + args.features = bs->data + bs->offset; + aim_bstream_advance(bs, args.featureslen); + args.icbmflags |= AIM_IMFLAGS_CUSTOMFEATURES; + + /* + * The rest of the TLV contains one or more message + * blocks... + */ + incomingim_ch1_parsemsgs(sess, bs->data + bs->offset /* XXX evil!!! */, length - 2 - 2 - args.featureslen, &args); + + } else if (type == 0x0003) { /* Server Ack Requested */ + + args.icbmflags |= AIM_IMFLAGS_ACK; + + } else if (type == 0x0004) { /* Message is Auto Response */ + + args.icbmflags |= AIM_IMFLAGS_AWAY; + + } else if (type == 0x0006) { /* Message was received offline. */ + + /* XXX not sure if this actually gets sent. */ + args.icbmflags |= AIM_IMFLAGS_OFFLINE; + + } else if (type == 0x0008) { /* I-HAVE-A-REALLY-PURTY-ICON Flag */ + + args.iconlen = aimbs_get32(bs); + aimbs_get16(bs); /* 0x0001 */ + args.iconsum = aimbs_get16(bs); + args.iconstamp = aimbs_get32(bs); + + /* + * This looks to be a client bug. MacAIM 4.3 will + * send this tag, but with all zero values, in the + * first message of a conversation. This makes no + * sense whatsoever, so I'm going to say its a bug. + * + * You really shouldn't advertise a zero-length icon + * anyway. + * + */ + if (args.iconlen) + args.icbmflags |= AIM_IMFLAGS_HASICON; + + } else if (type == 0x0009) { + + args.icbmflags |= AIM_IMFLAGS_BUDDYREQ; + + } else if (type == 0x0017) { + + args.extdatalen = length; + args.extdata = aimbs_getraw(bs, args.extdatalen); + + } else { + // imcb_error(sess->aux_data, "Unknown TLV encountered"); + } + + /* + * This is here to protect ourselves from ourselves. That + * is, if something above doesn't completly parse its value + * section, or, worse, overparses it, this will set the + * stream where it needs to be in order to land on the next + * TLV when the loop continues. + * + */ + aim_bstream_setpos(bs, endpos); + } + + + if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) + ret = userfunc(sess, rx, channel, userinfo, &args); + + aim_mpmsg_free(sess, &args.mpmsg); + g_free(args.extdata); + + return ret; +} + + +static void incomingim_ch2_chat_free(aim_session_t *sess, struct aim_incomingim_ch2_args *args) +{ + + /* XXX aim_chat_roominfo_free() */ + g_free(args->info.chat.roominfo.name); + + return; +} + +static void incomingim_ch2_chat(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_userinfo_t *userinfo, struct aim_incomingim_ch2_args *args, aim_bstream_t *servdata) +{ + + /* + * Chat room info. + */ + if (servdata) + aim_chat_readroominfo(servdata, &args->info.chat.roominfo); + + args->destructor = (void *)incomingim_ch2_chat_free; + + return; +} + +static void incomingim_ch2_icqserverrelay_free(aim_session_t *sess, struct aim_incomingim_ch2_args *args) +{ + + g_free((char *)args->info.rtfmsg.rtfmsg); + + return; +} + +/* + * The relationship between AIM_CAPS_ICQSERVERRELAY and AIM_CAPS_ICQRTF is + * kind of odd. This sends the client ICQRTF since that is all that I've seen + * SERVERRELAY used for. + * + * Note that this is all little-endian. Cringe. + * + * This cap is used for auto status message replies, too [ft] + * + */ +static void incomingim_ch2_icqserverrelay(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_userinfo_t *userinfo, struct aim_incomingim_ch2_args *args, aim_bstream_t *servdata) +{ + guint16 hdrlen, msglen, dc; + guint8 msgtype, msgflags; + guint8 *plugin; + int i = 0, tmp = 0; + struct im_connection *ic = sess->aux_data; + + /* at the moment we just can deal with requests, not with cancel or accept */ + if (args->status != 0) return; + + hdrlen = aimbs_getle16(servdata); + + aim_bstream_advance(servdata, 0x02); /* protocol version */ + plugin = aimbs_getraw(servdata, 0x10); /* following data is a message or + something plugin specific */ + /* as there is no plugin handling, just skip the rest */ + aim_bstream_advance(servdata, hdrlen - 0x12); + + hdrlen = aimbs_getle16(servdata); + dc = aimbs_getle16(servdata); /* save the sequence number */ + aim_bstream_advance(servdata, hdrlen - 0x02); + + /* TODO is it a message or something for a plugin? */ + for (i = 0; i < 0x10; i++) { + tmp |= plugin[i]; + } + + if (!tmp) { /* message follows */ + + msgtype = aimbs_getle8(servdata); + msgflags = aimbs_getle8(servdata); + + aim_bstream_advance(servdata, 0x04); /* status code and priority code */ + + msglen = aimbs_getle16(servdata); /* message string length */ + args->info.rtfmsg.rtfmsg = aimbs_getstr(servdata, msglen); + + switch(msgtype) { + case AIM_MTYPE_PLAIN: + + args->info.rtfmsg.fgcolor = aimbs_getle32(servdata); + args->info.rtfmsg.bgcolor = aimbs_getle32(servdata); + + hdrlen = aimbs_getle32(servdata); + aim_bstream_advance(servdata, hdrlen); + + /* XXX This is such a hack. */ + args->reqclass = AIM_CAPS_ICQRTF; + break; + + case AIM_MTYPE_AUTOAWAY: + case AIM_MTYPE_AUTOBUSY: + case AIM_MTYPE_AUTONA: + case AIM_MTYPE_AUTODND: + case AIM_MTYPE_AUTOFFC: + case 0x9c: /* ICQ 5 seems to send this */ + aim_send_im_ch2_statusmessage(sess, userinfo->sn, args->cookie, + ic->away ? ic->away : "", sess->aim_icq_state, dc); + break; + + } + } /* message or plugin specific */ + + g_free(plugin); + args->destructor = (void *)incomingim_ch2_icqserverrelay_free; + + return; +} + +typedef void (*ch2_args_destructor_t)(aim_session_t *sess, struct aim_incomingim_ch2_args *args); + +static int incomingim_ch2(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, guint16 channel, aim_userinfo_t *userinfo, aim_tlvlist_t *tlvlist, guint8 *cookie) +{ + aim_rxcallback_t userfunc; + aim_tlv_t *block1, *servdatatlv; + aim_tlvlist_t *list2; + struct aim_incomingim_ch2_args args; + aim_bstream_t bbs, sdbs, *sdbsptr = NULL; + guint8 *cookie2; + int ret = 0; + + char clientip1[30] = {""}; + char clientip2[30] = {""}; + char verifiedip[30] = {""}; + + memset(&args, 0, sizeof(args)); + + /* + * There's another block of TLVs embedded in the type 5 here. + */ + block1 = aim_gettlv(tlvlist, 0x0005, 1); + aim_bstream_init(&bbs, block1->value, block1->length); + + /* + * First two bytes represent the status of the connection. + * + * 0 is a request, 1 is a deny (?), 2 is an accept + */ + args.status = aimbs_get16(&bbs); + + /* + * Next comes the cookie. Should match the ICBM cookie. + */ + cookie2 = aimbs_getraw(&bbs, 8); + if (memcmp(cookie, cookie2, 8) != 0) + imcb_error(sess->aux_data, "rend: warning cookies don't match!"); + memcpy(args.cookie, cookie2, 8); + g_free(cookie2); + + /* + * The next 16bytes are a capability block so we can + * identify what type of rendezvous this is. + */ + args.reqclass = aim_getcap(sess, &bbs, 0x10); + + /* + * What follows may be TLVs or nothing, depending on the + * purpose of the message. + * + * Ack packets for instance have nothing more to them. + */ + list2 = aim_readtlvchain(&bbs); + + /* + * IP address from the perspective of the client. + */ + if (aim_gettlv(list2, 0x0002, 1)) { + aim_tlv_t *iptlv; + + iptlv = aim_gettlv(list2, 0x0002, 1); + + g_snprintf(clientip1, sizeof(clientip1), "%d.%d.%d.%d", + aimutil_get8(iptlv->value+0), + aimutil_get8(iptlv->value+1), + aimutil_get8(iptlv->value+2), + aimutil_get8(iptlv->value+3)); + } + + /* + * Secondary IP address from the perspective of the client. + */ + if (aim_gettlv(list2, 0x0003, 1)) { + aim_tlv_t *iptlv; + + iptlv = aim_gettlv(list2, 0x0003, 1); + + g_snprintf(clientip2, sizeof(clientip2), "%d.%d.%d.%d", + aimutil_get8(iptlv->value+0), + aimutil_get8(iptlv->value+1), + aimutil_get8(iptlv->value+2), + aimutil_get8(iptlv->value+3)); + } + + /* + * Verified IP address (from the perspective of Oscar). + * + * This is added by the server. + */ + if (aim_gettlv(list2, 0x0004, 1)) { + aim_tlv_t *iptlv; + + iptlv = aim_gettlv(list2, 0x0004, 1); + + g_snprintf(verifiedip, sizeof(verifiedip), "%d.%d.%d.%d", + aimutil_get8(iptlv->value+0), + aimutil_get8(iptlv->value+1), + aimutil_get8(iptlv->value+2), + aimutil_get8(iptlv->value+3)); + } + + /* + * Port number for something. + */ + if (aim_gettlv(list2, 0x0005, 1)) + args.port = aim_gettlv16(list2, 0x0005, 1); + + /* + * Error code. + */ + if (aim_gettlv(list2, 0x000b, 1)) + args.errorcode = aim_gettlv16(list2, 0x000b, 1); + + /* + * Invitation message / chat description. + */ + if (aim_gettlv(list2, 0x000c, 1)) + args.msg = aim_gettlv_str(list2, 0x000c, 1); + + /* + * Character set. + */ + if (aim_gettlv(list2, 0x000d, 1)) + args.encoding = aim_gettlv_str(list2, 0x000d, 1); + + /* + * Language. + */ + if (aim_gettlv(list2, 0x000e, 1)) + args.language = aim_gettlv_str(list2, 0x000e, 1); + + /* Unknown -- two bytes = 0x0001 */ + if (aim_gettlv(list2, 0x000a, 1)) + ; + + /* Unknown -- no value */ + if (aim_gettlv(list2, 0x000f, 1)) + ; + + if (strlen(clientip1)) + args.clientip = (char *)clientip1; + if (strlen(clientip2)) + args.clientip2 = (char *)clientip2; + if (strlen(verifiedip)) + args.verifiedip = (char *)verifiedip; + + /* + * This is must be present in PROPOSALs, but will probably not + * exist in CANCELs and ACCEPTs. + * + * Service Data blocks are module-specific in format. + */ + if ((servdatatlv = aim_gettlv(list2, 0x2711 /* 10001 */, 1))) { + + aim_bstream_init(&sdbs, servdatatlv->value, servdatatlv->length); + sdbsptr = &sdbs; + } + + if (args.reqclass & AIM_CAPS_ICQSERVERRELAY) + incomingim_ch2_icqserverrelay(sess, mod, rx, snac, userinfo, &args, sdbsptr); + else if (args.reqclass & AIM_CAPS_CHAT) + incomingim_ch2_chat(sess, mod, rx, snac, userinfo, &args, sdbsptr); + + + if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) + ret = userfunc(sess, rx, channel, userinfo, &args); + + + if (args.destructor) + ((ch2_args_destructor_t)args.destructor)(sess, &args); + + g_free((char *)args.msg); + g_free((char *)args.encoding); + g_free((char *)args.language); + + aim_freetlvchain(&list2); + + return ret; +} + +static int incomingim_ch4(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, guint16 channel, aim_userinfo_t *userinfo, aim_tlvlist_t *tlvlist, guint8 *cookie) +{ + aim_bstream_t meat; + aim_rxcallback_t userfunc; + aim_tlv_t *block; + struct aim_incomingim_ch4_args args; + int ret = 0; + + /* + * Make a bstream for the meaty part. Yum. Meat. + */ + if (!(block = aim_gettlv(tlvlist, 0x0005, 1))) + return -1; + aim_bstream_init(&meat, block->value, block->length); + + args.uin = aimbs_getle32(&meat); + args.type = aimbs_getle16(&meat); + args.msg = (char *)aimbs_getraw(&meat, aimbs_getle16(&meat)); + + if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) + ret = userfunc(sess, rx, channel, userinfo, &args); + + g_free(args.msg); + + return ret; +} + +/* + * It can easily be said that parsing ICBMs is THE single + * most difficult thing to do in the in AIM protocol. In + * fact, I think I just did say that. + * + * Below is the best damned solution I've come up with + * over the past sixteen months of battling with it. This + * can parse both away and normal messages from every client + * I have access to. Its not fast, its not clean. But it works. + * + */ +static int incomingim(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs) +{ + int i, ret = 0; + guint8 cookie[8]; + guint16 channel; + aim_userinfo_t userinfo; + + memset(&userinfo, 0x00, sizeof(aim_userinfo_t)); + + /* + * Read ICBM Cookie. And throw away. + */ + for (i = 0; i < 8; i++) + cookie[i] = aimbs_get8(bs); + + /* + * Channel ID. + * + * Channel 0x0001 is the message channel. There are + * other channels for things called "rendevous" + * which represent chat and some of the other new + * features of AIM2/3/3.5. + * + * Channel 0x0002 is the Rendevous channel, which + * is where Chat Invitiations and various client-client + * connection negotiations come from. + * + * Channel 0x0004 is used for ICQ authorization, or + * possibly any system notice. + * + */ + channel = aimbs_get16(bs); + + /* + * Extract the standard user info block. + * + * Note that although this contains TLVs that appear contiguous + * with the TLVs read below, they are two different pieces. The + * userinfo block contains the number of TLVs that contain user + * information, the rest are not even though there is no seperation. + * aim_extractuserinfo() returns the number of bytes used by the + * userinfo tlvs, so you can start reading the rest of them right + * afterward. + * + * That also means that TLV types can be duplicated between the + * userinfo block and the rest of the message, however there should + * never be two TLVs of the same type in one block. + * + */ + aim_extractuserinfo(sess, bs, &userinfo); + + /* + * From here on, its depends on what channel we're on. + * + * Technically all channels have a TLV list have this, however, + * for the common channel 1 case, in-place parsing is used for + * performance reasons (less memory allocation). + */ + if (channel == 1) { + + ret = incomingim_ch1(sess, mod, rx, snac, channel, &userinfo, bs, cookie); + + } else if (channel == 2) { + aim_tlvlist_t *tlvlist; + + /* + * Read block of TLVs (not including the userinfo data). All + * further data is derived from what is parsed here. + */ + tlvlist = aim_readtlvchain(bs); + + ret = incomingim_ch2(sess, mod, rx, snac, channel, &userinfo, tlvlist, cookie); + + aim_freetlvchain(&tlvlist); + + } else if (channel == 4) { + aim_tlvlist_t *tlvlist; + + tlvlist = aim_readtlvchain(bs); + ret = incomingim_ch4(sess, mod, rx, snac, channel, &userinfo, tlvlist, cookie); + aim_freetlvchain(&tlvlist); + + } else { + + imcb_error(sess->aux_data, "ICBM received on an unsupported channel. Ignoring."); + + return 0; + } + + return ret; +} + +/* + * Possible codes: + * AIM_TRANSFER_DENY_NOTSUPPORTED -- "client does not support" + * AIM_TRANSFER_DENY_DECLINE -- "client has declined transfer" + * AIM_TRANSFER_DENY_NOTACCEPTING -- "client is not accepting transfers" + * + */ +int aim_denytransfer(aim_session_t *sess, const char *sender, const guint8 *cookie, guint16 code) +{ + aim_conn_t *conn; + aim_frame_t *fr; + aim_snacid_t snacid; + aim_tlvlist_t *tl = NULL; + + if (!sess || !(conn = aim_conn_findbygroup(sess, 0x0004))) + return -EINVAL; + + if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 10+8+2+1+strlen(sender)+6))) + return -ENOMEM; + + snacid = aim_cachesnac(sess, 0x0004, 0x000b, 0x0000, NULL, 0); + aim_putsnac(&fr->data, 0x0004, 0x000b, 0x0000, snacid); + + aimbs_putraw(&fr->data, cookie, 8); + + aimbs_put16(&fr->data, 0x0002); /* channel */ + aimbs_put8(&fr->data, strlen(sender)); + aimbs_putraw(&fr->data, (guint8 *)sender, strlen(sender)); + + aim_addtlvtochain16(&tl, 0x0003, code); + aim_writetlvchain(&fr->data, &tl); + aim_freetlvchain(&tl); + + aim_tx_enqueue(sess, fr); + + return 0; +} + +/* + * aim_reqicbmparaminfo() + * + * Request ICBM parameter information. + * + */ +int aim_reqicbmparams(aim_session_t *sess) +{ + aim_conn_t *conn; + + if (!sess || !(conn = aim_conn_findbygroup(sess, 0x0004))) + return -EINVAL; + + return aim_genericreq_n(sess, conn, 0x0004, 0x0004); +} + +/* + * + * I definitly recommend sending this. If you don't, you'll be stuck + * with the rather unreasonable defaults. You don't want those. Send this. + * + */ +int aim_seticbmparam(aim_session_t *sess, struct aim_icbmparameters *params) +{ + aim_conn_t *conn; + aim_frame_t *fr; + aim_snacid_t snacid; + + if (!sess || !(conn = aim_conn_findbygroup(sess, 0x0004))) + return -EINVAL; + + if (!params) + return -EINVAL; + + if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 10+16))) + return -ENOMEM; + + snacid = aim_cachesnac(sess, 0x0004, 0x0002, 0x0000, NULL, 0); + aim_putsnac(&fr->data, 0x0004, 0x0002, 0x0000, snacid); + + /* This is read-only (see Parameter Reply). Must be set to zero here. */ + aimbs_put16(&fr->data, 0x0000); + + /* These are all read-write */ + aimbs_put32(&fr->data, params->flags); + aimbs_put16(&fr->data, params->maxmsglen); + aimbs_put16(&fr->data, params->maxsenderwarn); + aimbs_put16(&fr->data, params->maxrecverwarn); + aimbs_put32(&fr->data, params->minmsginterval); + + aim_tx_enqueue(sess, fr); + + return 0; +} + +static int paraminfo(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs) +{ + struct aim_icbmparameters params; + aim_rxcallback_t userfunc; + + params.maxchan = aimbs_get16(bs); + params.flags = aimbs_get32(bs); + params.maxmsglen = aimbs_get16(bs); + params.maxsenderwarn = aimbs_get16(bs); + params.maxrecverwarn = aimbs_get16(bs); + params.minmsginterval = aimbs_get32(bs); + + if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) + return userfunc(sess, rx, ¶ms); + + return 0; +} + +static int missedcall(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs) +{ + int ret = 0; + aim_rxcallback_t userfunc; + guint16 channel, nummissed, reason; + aim_userinfo_t userinfo; + + while (aim_bstream_empty(bs)) { + + channel = aimbs_get16(bs); + aim_extractuserinfo(sess, bs, &userinfo); + nummissed = aimbs_get16(bs); + reason = aimbs_get16(bs); + + if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) + ret = userfunc(sess, rx, channel, &userinfo, nummissed, reason); + } + + return ret; +} + +/* + * Receive the response from an ICQ status message request. This contains the + * ICQ status message. Go figure. + */ +static int clientautoresp(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs) +{ + int ret = 0; + aim_rxcallback_t userfunc; + guint16 channel, reason; + char *sn; + guint8 *ck, snlen; + + ck = aimbs_getraw(bs, 8); + channel = aimbs_get16(bs); + snlen = aimbs_get8(bs); + sn = aimbs_getstr(bs, snlen); + reason = aimbs_get16(bs); + + switch (reason) { + case 0x0003: { /* ICQ status message. Maybe other stuff too, you never know with these people. */ + guint8 statusmsgtype, *msg; + guint16 len; + guint32 state; + + len = aimbs_getle16(bs); /* Should be 0x001b */ + aim_bstream_advance(bs, len); /* Unknown */ + + len = aimbs_getle16(bs); /* Should be 0x000e */ + aim_bstream_advance(bs, len); /* Unknown */ + + statusmsgtype = aimbs_getle8(bs); + switch (statusmsgtype) { + case 0xe8: + state = AIM_ICQ_STATE_AWAY; + break; + case 0xe9: + state = AIM_ICQ_STATE_AWAY | AIM_ICQ_STATE_BUSY; + break; + case 0xea: + state = AIM_ICQ_STATE_AWAY | AIM_ICQ_STATE_OUT; + break; + case 0xeb: + state = AIM_ICQ_STATE_AWAY | AIM_ICQ_STATE_DND | AIM_ICQ_STATE_BUSY; + break; + case 0xec: + state = AIM_ICQ_STATE_CHAT; + break; + default: + state = 0; + break; + } + + aimbs_getle8(bs); /* Unknown - 0x03 Maybe this means this is an auto-reply */ + aimbs_getle16(bs); /* Unknown - 0x0000 */ + aimbs_getle16(bs); /* Unknown - 0x0000 */ + + len = aimbs_getle16(bs); + msg = aimbs_getraw(bs, len); + + if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) + ret = userfunc(sess, rx, channel, sn, reason, state, msg); + + g_free(msg); + } break; + + default: { + if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) + ret = userfunc(sess, rx, channel, sn, reason); + } break; + } /* end switch */ + + g_free(ck); + g_free(sn); + + return ret; +} + +static int msgack(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs) +{ + aim_rxcallback_t userfunc; + guint16 type; + guint8 snlen, *ck; + char *sn; + int ret = 0; + + ck = aimbs_getraw(bs, 8); + type = aimbs_get16(bs); + snlen = aimbs_get8(bs); + sn = aimbs_getstr(bs, snlen); + + if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) + ret = userfunc(sess, rx, type, sn); + + g_free(sn); + g_free(ck); + + return ret; +} + +/* + * Subtype 0x0014 - Send a mini typing notification (mtn) packet. + * + * This is supported by winaim5 and newer, MacAIM bleh and newer, iChat bleh and newer, + * and Gaim 0.60 and newer. + * + */ +int aim_im_sendmtn(aim_session_t *sess, guint16 type1, const char *sn, guint16 type2) +{ + aim_conn_t *conn; + aim_frame_t *fr; + aim_snacid_t snacid; + + if (!sess || !(conn = aim_conn_findbygroup(sess, 0x0002))) + return -EINVAL; + + if (!sn) + return -EINVAL; + + if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 10+11+strlen(sn)+2))) + return -ENOMEM; + + snacid = aim_cachesnac(sess, 0x0004, 0x0014, 0x0000, NULL, 0); + aim_putsnac(&fr->data, 0x0004, 0x0014, 0x0000, snacid); + + /* + * 8 days of light + * Er, that is to say, 8 bytes of 0's + */ + aimbs_put16(&fr->data, 0x0000); + aimbs_put16(&fr->data, 0x0000); + aimbs_put16(&fr->data, 0x0000); + aimbs_put16(&fr->data, 0x0000); + + /* + * Type 1 (should be 0x0001 for mtn) + */ + aimbs_put16(&fr->data, type1); + + /* + * Dest sn + */ + aimbs_put8(&fr->data, strlen(sn)); + aimbs_putraw(&fr->data, (const guint8*)sn, strlen(sn)); + + /* + * Type 2 (should be 0x0000, 0x0001, or 0x0002 for mtn) + */ + aimbs_put16(&fr->data, type2); + + aim_tx_enqueue(sess, fr); + + return 0; +} + +/* + * Subtype 0x0014 - Receive a mini typing notification (mtn) packet. + * + * This is supported by winaim5 and newer, MacAIM bleh and newer, iChat bleh and newer, + * and Gaim 0.60 and newer. + * + */ +static int mtn_receive(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs) +{ + int ret = 0; + aim_rxcallback_t userfunc; + char *sn; + guint8 snlen; + guint16 type1, type2; + + aim_bstream_advance(bs, 8); /* Unknown - All 0's */ + type1 = aimbs_get16(bs); + snlen = aimbs_get8(bs); + sn = aimbs_getstr(bs, snlen); + type2 = aimbs_get16(bs); + + if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) + ret = userfunc(sess, rx, type1, sn, type2); + + g_free(sn); + + 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 == 0x0005) + return paraminfo(sess, mod, rx, snac, bs); + else if (snac->subtype == 0x0006) + return outgoingim(sess, mod, rx, snac, bs); + else if (snac->subtype == 0x0007) + return incomingim(sess, mod, rx, snac, bs); + else if (snac->subtype == 0x000a) + return missedcall(sess, mod, rx, snac, bs); + else if (snac->subtype == 0x000b) + return clientautoresp(sess, mod, rx, snac, bs); + else if (snac->subtype == 0x000c) + return msgack(sess, mod, rx, snac, bs); + else if (snac->subtype == 0x0014) + return mtn_receive(sess, mod, rx, snac, bs); + + return 0; +} + +int msg_modfirst(aim_session_t *sess, aim_module_t *mod) +{ + + mod->family = 0x0004; + mod->version = 0x0001; + mod->toolid = 0x0110; + mod->toolversion = 0x0629; + mod->flags = 0; + strncpy(mod->name, "messaging", sizeof(mod->name)); + mod->snachandler = snachandler; + + return 0; +} |