*
* 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.
+ *
*/
#define FAIM_INTERNAL
#include <aim.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.
+ *
+ */
+faim_export fu16_t aim_fingerprintclient(fu8_t *msghdr, int len)
+{
+ static const struct {
+ fu16_t clientid;
+ int len;
+ fu8_t 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... */
+faim_export fu32_t aim_iconsum(const fu8_t *buf, int buflen)
+{
+ fu32_t sum;
+ int i;
+
+ for (i = 0, sum = 0; i < buflen; i += 2)
+ sum += (buf[i+1] << 8) + buf[i];
+
+ sum = ((sum & 0xffff0000) >> 16) + (sum & 0x0000ffff);
+
+ return sum;
+}
+
/*
* Send an ICBM (instant message).
*
* 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_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
*
*/
-faim_export unsigned long aim_send_im(struct aim_session_t *sess,
- struct aim_conn_t *conn,
- char *destsn, u_int flags, char *msg)
-{
-
- int curbyte,i;
- struct command_tx_struct *newpacket;
-
- if (strlen(msg) >= MAXMSGLEN)
- return -1;
-
- if (!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, strlen(msg)+256)))
- return -1;
-
- newpacket->lock = 1; /* lock struct */
-
- curbyte = 0;
- curbyte += aim_putsnac(newpacket->data+curbyte,
- 0x0004, 0x0006, 0x0000, sess->snac_nextid);
-
- /*
- * 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++)
- curbyte += aimutil_put8(newpacket->data+curbyte, (u_char) rand());
-
- /*
- * Channel ID
- */
- curbyte += aimutil_put16(newpacket->data+curbyte,0x0001);
-
- /*
- * Destination SN (prepended with byte length)
- */
- curbyte += aimutil_put8(newpacket->data+curbyte,strlen(destsn));
- curbyte += aimutil_putstr(newpacket->data+curbyte, destsn, strlen(destsn));
-
- /*
- * metaTLV start.
- */
- curbyte += aimutil_put16(newpacket->data+curbyte, 0x0002);
- curbyte += aimutil_put16(newpacket->data+curbyte, strlen(msg) + 0x10);
-
- /*
- * Flag data / ICBM Parameters?
- */
- curbyte += aimutil_put8(newpacket->data+curbyte, 0x05);
- curbyte += aimutil_put8(newpacket->data+curbyte, 0x01);
-
- /* number of bytes to follow */
- curbyte += aimutil_put16(newpacket->data+curbyte, 0x0004);
- curbyte += aimutil_put8(newpacket->data+curbyte, 0x01);
- curbyte += aimutil_put8(newpacket->data+curbyte, 0x01);
- curbyte += aimutil_put8(newpacket->data+curbyte, 0x01);
- curbyte += aimutil_put8(newpacket->data+curbyte, 0x02);
-
- curbyte += aimutil_put16(newpacket->data+curbyte, 0x0101);
-
- /*
- * Message block length.
- */
- curbyte += aimutil_put16(newpacket->data+curbyte, strlen(msg) + 0x04);
-
- /*
- * Character set data?
- */
- curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000);
- curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000);
-
- /*
- * Message. Not terminated.
- */
- curbyte += aimutil_putstr(newpacket->data+curbyte,msg, strlen(msg));
-
- /*
- * Set the Request Acknowledge flag.
- */
- if (flags & AIM_IMFLAGS_ACK) {
- curbyte += aimutil_put16(newpacket->data+curbyte,0x0003);
- curbyte += aimutil_put16(newpacket->data+curbyte,0x0000);
- }
-
- /*
- * Set the Autoresponse flag.
- */
- if (flags & AIM_IMFLAGS_AWAY) {
- curbyte += aimutil_put16(newpacket->data+curbyte,0x0004);
- curbyte += aimutil_put16(newpacket->data+curbyte,0x0000);
- }
-
- newpacket->commandlen = curbyte;
- newpacket->lock = 0;
-
- aim_tx_enqueue(sess, newpacket);
-
- aim_cachesnac(sess, 0x0004, 0x0006, 0x0000, destsn, strlen(destsn)+1);
- aim_cleansnacs(sess, 60); /* clean out all SNACs over 60sec old */
-
- return sess->snac_nextid;
-}
-
-faim_internal int aim_parse_outgoing_im_middle(struct aim_session_t *sess,
- struct command_rx_struct *command)
-{
- unsigned int i = 0, z;
- rxcallback_t userfunc = NULL;
- unsigned char cookie[8];
- int channel;
- struct aim_tlvlist_t *tlvlist;
- char sn[MAXSNLEN];
- unsigned short icbmflags = 0;
- unsigned char flag1 = 0, flag2 = 0;
- unsigned char *msgblock = NULL, *msg = NULL;
-
- i = 10;
-
- /* ICBM Cookie. */
- for (z=0; z<8; z++,i++)
- cookie[z] = command->data[i];
-
- /* Channel ID */
- channel = aimutil_get16(command->data+i);
- i += 2;
-
- if (channel != 0x01) {
- printf("faim: icbm: ICBM recieved on unsupported channel. Ignoring. (chan = %04x)\n", channel);
- return 1;
- }
-
- strncpy(sn, (char *) command->data+i+1, (int) *(command->data+i));
- i += 1 + (int) *(command->data+i);
-
- tlvlist = aim_readtlvchain(command->data+i, command->commandlen-i);
-
- if (aim_gettlv(tlvlist, 0x0003, 1))
- icbmflags |= AIM_IMFLAGS_ACK;
- if (aim_gettlv(tlvlist, 0x0004, 1))
- icbmflags |= AIM_IMFLAGS_AWAY;
-
- if (aim_gettlv(tlvlist, 0x0002, 1)) {
- int j = 0;
-
- msgblock = (unsigned char *)aim_gettlv_str(tlvlist, 0x0002, 1);
-
- /* no, this really is correct. I'm not high or anything either. */
- j += 2;
- j += 2 + aimutil_get16(msgblock+j);
- j += 2;
-
- j += 2; /* final block length */
-
- flag1 = aimutil_get16(msgblock);
- j += 2;
- flag2 = aimutil_get16(msgblock);
- j += 2;
-
- msg = msgblock+j;
- }
-
- if ((userfunc = aim_callhandler(command->conn, 0x0004, 0x0006)) || (i = 0))
- i = userfunc(sess, command, channel, sn, msg, icbmflags, flag1, flag2);
-
- if (msgblock)
- free(msgblock);
- aim_freetlvchain(&tlvlist);
-
- return 0;
+faim_export int aim_send_im_ext(aim_session_t *sess, aim_conn_t *conn, struct aim_sendimext_args *args)
+{
+ static const fu8_t deffeatures[] = {
+ 0x01, 0x01, 0x01, 0x02
+ };
+ int i, msgtlvlen;
+ aim_frame_t *fr;
+ aim_snacid_t snacid;
+
+ if (!sess || !conn || !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, (fu8_t) 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, args->destsn, strlen(args->destsn));
+
+ /*
+ * metaTLV start.
+ */
+ 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, 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);
+ }
+
+ /*
+ * Set the Buddy Icon Requested flag.
+ */
+ if (args->flags & AIM_IMFLAGS_BUDDYREQ) {
+ aimbs_put16(&fr->data, 0x0009);
+ 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_put32(&fr->data, args->iconsum);
+ aimbs_put32(&fr->data, args->iconstamp);
+ }
+
+ aim_tx_enqueue(sess, fr);
+
+#if 1 /* XXX do this with autoconf or something... */
+ aim_cleansnacs(sess, 60); /* clean out all SNACs over 60sec old */
+#endif
+
+ return 0;
}
/*
- * 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.
+ * Simple wrapper for aim_send_im_ext()
*
- * 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.
+ * You cannot use aim_send_im if you need the HASICON flag. You must
+ * use aim_send_im_ext directly for that.
*
- * We should also support at least minimal parsing of
- * Channel 2, so that we can at least know the name of the
- * room we're invited to, but obviously can't attend...
+ * aim_send_im also cannot be used if you require UNICODE messages, because
+ * that requires an explicit message length. Use aim_send_im_ext().
*
*/
-faim_internal int aim_parse_incoming_im_middle(struct aim_session_t *sess,
- struct command_rx_struct *command)
-{
- u_int i = 0,z;
- rxcallback_t userfunc = NULL;
- u_char cookie[8];
- int channel;
- struct aim_tlvlist_t *tlvlist;
- struct aim_userinfo_s userinfo;
- u_short wastebits;
-
- memset(&userinfo, 0x00, sizeof(struct aim_userinfo_s));
-
- i = 10; /* Skip SNAC header */
-
- /*
- * Read ICBM Cookie. And throw away.
- */
- for (z=0; z<8; z++,i++)
- cookie[z] = command->data[i];
-
- /*
- * 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 = aimutil_get16(command->data+i);
- i += 2;
-
- /*
- *
- */
- if ((channel != 0x01) && (channel != 0x02))
- {
- printf("faim: icbm: ICBM received on an unsupported channel. Ignoring.\n (chan = %04x)", channel);
- return 1;
- }
-
- /*
- * 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.
- *
- */
- i += aim_extractuserinfo(command->data+i, &userinfo);
-
- /*
- * Read block of TLVs (not including the userinfo data). All
- * further data is derived from what is parsed here.
- */
- tlvlist = aim_readtlvchain(command->data+i, command->commandlen-i);
-
- /*
- * From here on, its depends on what channel we're on.
- */
- if (channel == 1)
- {
- u_int j = 0, y = 0, z = 0;
- char *msg = NULL;
- u_int icbmflags = 0;
- struct aim_tlv_t *msgblocktlv;
- u_char *msgblock;
- u_short flag1,flag2;
-
- /*
- * Check Autoresponse status. If it is an autoresponse,
- * it will contain a type 0x0004 TLV, with zero length.
- */
- if (aim_gettlv(tlvlist, 0x0004, 1))
- icbmflags |= AIM_IMFLAGS_AWAY;
-
- /*
- * Check Ack Request status.
- */
- if (aim_gettlv(tlvlist, 0x0003, 1))
- icbmflags |= AIM_IMFLAGS_ACK;
-
- /*
- * Message block.
- */
- msgblocktlv = aim_gettlv(tlvlist, 0x0002, 1);
- if (!msgblocktlv || !msgblocktlv->value) {
- printf("faim: icbm: major error! no message block TLV found!\n");
- aim_freetlvchain(&tlvlist);
- return 1;
- }
-
- /*
- * Extracting the message from the unknown cruft.
- *
- * This is a bit messy, and I'm not really qualified,
- * even as the author, to comment on it. At least
- * its not as bad as a while loop shooting into infinity.
- *
- * "Do you believe in magic?"
- *
- */
- msgblock = msgblocktlv->value;
- j = 0;
-
- wastebits = aimutil_get8(msgblock+j++);
- wastebits = aimutil_get8(msgblock+j++);
-
- y = aimutil_get16(msgblock+j);
- j += 2;
- for (z = 0; z < y; z++)
- wastebits = aimutil_get8(msgblock+j++);
- wastebits = aimutil_get8(msgblock+j++);
- wastebits = aimutil_get8(msgblock+j++);
-
- /*
- * Message string length, including flag words.
- */
- i = aimutil_get16(msgblock+j);
- j += 2;
-
- /*
- * Flag words.
- *
- * Its rumored that these can kick in some funky
- * 16bit-wide char stuff that used to really kill
- * libfaim. Hopefully the latter is no longer true.
- *
- * Though someone should investiagte the former.
- *
- */
- flag1 = aimutil_get16(msgblock+j);
- j += 2;
- flag2 = aimutil_get16(msgblock+j);
- j += 2;
-
- if (flag1 || flag2)
- printf("faim: icbm: **warning: encoding flags are being used! {%04x, %04x}\n", flag1, flag2);
-
- /*
- * Message string.
- */
- i -= 4;
- msg = (char *)malloc(i+1);
- memcpy(msg, msgblock+j, i);
- msg[i] = '\0';
-
- /*
- * Call client.
- */
- userfunc = aim_callhandler(command->conn, 0x0004, 0x0007);
- if (userfunc)
- i = userfunc(sess, command, channel, &userinfo, msg, icbmflags, flag1, flag2);
- else
- i = 0;
-
- free(msg);
- }
- else if (channel == 0x0002)
- {
- struct aim_tlv_t *block1;
- struct aim_tlvlist_t *list2;
- unsigned short reqclass = 0;
- unsigned short status = 0;
-
- /*
- * There's another block of TLVs embedded in the type 5 here.
- */
- block1 = aim_gettlv(tlvlist, 0x0005, 1);
- if (!block1) {
- printf("faim: no tlv 0x0005 in rendezvous transaction!\n");
- aim_freetlvchain(&tlvlist);
- return 1; /* major problem */
- }
-
- /*
- * First two bytes represent the status of the connection.
- *
- * 0 is a request, 2 is an accept
- */
- status = aimutil_get16(block1->value+0);
-
- /*
- * Next comes the cookie. Should match the ICBM cookie.
- */
- if (memcmp(block1->value+2, cookie, 8) != 0)
- printf("faim: rend: warning cookies don't match!\n");
-
- /*
- * The next 16bytes are a capability block so we can
- * identify what type of rendezvous this is.
- *
- * Thanks to Eric Warmenhoven <warmenhoven@linux.com> (of GAIM)
- * for pointing some of this out to me. In fact, a lot of
- * the client-to-client info comes from the work of the GAIM
- * developers. Thanks!
- *
- * Read off one capability string and we should have it ID'd.
- *
- */
- reqclass = aim_getcap(block1->value+2+8, 0x10);
- if (reqclass == 0x0000) {
- printf("faim: rend: no ID block\n");
+faim_export int aim_send_im(aim_session_t *sess, aim_conn_t *conn, const char *destsn, fu16_t 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, conn, &args);
+}
+
+/*
+ * This is also performance sensitive. (If you can believe it...)
+ *
+ */
+faim_export int aim_send_icon(aim_session_t *sess, aim_conn_t *conn, const char *sn, const fu8_t *icon, int iconlen, time_t stamp, fu32_t iconsum)
+{
+ int i;
+ fu8_t ck[8];
+ aim_frame_t *fr;
+ aim_snacid_t snacid;
+
+ if (!sess || !conn || !sn || !icon || (iconlen <= 0) || (iconlen >= MAXICONLEN))
+ return -EINVAL;
+
+ if (conn->type != AIM_CONN_TYPE_BOS)
+ return -EINVAL;
+
+ for (i = 0; i < 8; i++)
+ aimutil_put8(ck+i, (fu8_t) 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, 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_put32(&fr->data, iconsum);
+ aimbs_put32(&fr->data, iconlen);
+ aimbs_put32(&fr->data, stamp);
+ aimbs_putraw(&fr->data, icon, iconlen);
+ aimbs_putraw(&fr->data, 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;
+}
+
+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;
+ fu8_t cookie[8];
+ fu16_t channel;
+ aim_tlvlist_t *tlvlist;
+ char *sn;
+ int snlen;
+ fu16_t icbmflags = 0;
+ fu8_t flag1 = 0, flag2 = 0;
+ fu8_t *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) {
+ faimdprintf(sess, 0, "icbm: ICBM recieved on unsupported channel. Ignoring. (chan = %04x)\n", channel);
+ 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);
+
+ free(sn);
aim_freetlvchain(&tlvlist);
- return 1;
- }
-
- /*
- * 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(block1->value+2+8+16, block1->length-2-8-16);
-
- if (!list2 || ((reqclass != AIM_CAPS_IMIMAGE) && !(aim_gettlv(list2, 0x2711, 1)))) {
- struct aim_msgcookie_t *cook;
- int type;
+
+ 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.
+ *
+ */
+faim_export 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, fu16_t charset, fu16_t charsubset, fu8_t *data, fu16_t datalen)
+{
+ aim_mpmsg_section_t *sec;
- type = aim_msgcookie_gettype(reqclass); /* XXX: fix this shitty code */
-
- if(type != 17) {
- if ((cook = aim_uncachecookie(sess, cookie, type)) == NULL) {
- printf("faim: non-data rendezvous thats not in cache!\n");
- aim_freetlvchain(&list2);
- aim_freetlvchain(&tlvlist);
- return 1;
- }
+ if (!(sec = malloc(sizeof(aim_mpmsg_section_t))))
+ 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;
}
- if (cook->type == AIM_COOKIETYPE_OFTGET) {
- struct aim_filetransfer_priv *ft;
-
- if (cook->data) {
- int errorcode = -1; /* XXX shouldnt this be 0? */
-
- ft = (struct aim_filetransfer_priv *)cook->data;
-
- if(status != 0x0002) {
- if (aim_gettlv(list2, 0x000b, 1))
- errorcode = aim_gettlv16(list2, 0x000b, 1);
-
- if (errorcode)
- printf("faim: transfer from %s (%s) for %s cancelled (error code %d)\n", ft->sn, ft->ip, ft->fh.name, errorcode);
- }
- } else {
- printf("faim: no data attached to file transfer\n");
- }
- } else if (cook->type == AIM_CAPS_VOICE) {
- printf("faim: voice request cancelled\n");
- } else {
- printf("faim: unknown cookie cache type %d\n", cook->type);
+ mpm->numparts++;
+
+ return 0;
+}
+
+faim_export int aim_mpmsg_addraw(aim_session_t *sess, aim_mpmsg_t *mpm, fu16_t charset, fu16_t charsubset, const fu8_t *data, fu16_t datalen)
+{
+ fu8_t *dup;
+
+ if (!(dup = malloc(datalen)))
+ return -1;
+ memcpy(dup, data, datalen);
+
+ if (mpmsg_addsection(sess, mpm, charset, charsubset, dup, datalen) == -1) {
+ free(dup);
+ return -1;
+ }
+
+ return 0;
+}
+
+/* XXX should provide a way of saying ISO-8859-1 specifically */
+faim_export int aim_mpmsg_addascii(aim_session_t *sess, aim_mpmsg_t *mpm, const char *ascii)
+{
+ fu8_t *dup;
+
+ if (!(dup = strdup(ascii)))
+ return -1;
+
+ if (mpmsg_addsection(sess, mpm, 0x0000, 0x0000, dup, strlen(ascii)) == -1) {
+ free(dup);
+ return -1;
+ }
+
+ return 0;
+}
+
+faim_export int aim_mpmsg_addunicode(aim_session_t *sess, aim_mpmsg_t *mpm, const fu16_t *unicode, fu16_t unicodelen)
+{
+ fu8_t *buf;
+ aim_bstream_t bs;
+ int i;
+
+ if (!(buf = 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) {
+ free(buf);
+ return -1;
}
- if (list2)
- aim_freetlvchain(&list2);
- aim_freetlvchain(&tlvlist);
- return 1;
- }
+ return 0;
+}
+
+faim_export 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;
+ free(cur->data);
+ free(cur);
+ cur = tmp;
+ }
+
+ mpm->numparts = 0;
+ mpm->parts = NULL;
+
+ return;
+}
- /*
- * The rest of the handling depends on what type it is.
- */
- if (reqclass & AIM_CAPS_BUDDYICON) {
+/*
+ * 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, fu8_t *data, int len, struct aim_incomingim_ch1_args *args)
+{
+ static const fu16_t 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)) {
+ fu16_t msglen, flag1, flag2;
+ fu8_t *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, msgbuf, msglen);
+
+ } /* while */
+
+ args->icbmflags |= AIM_IMFLAGS_MULTIPART; /* always set */
/*
- * Call client.
+ * 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
- userfunc = aim_callhandler(command->conn, 0x0004, 0x0007);
- if (userfunc || (i = 0))
- i = userfunc(sess,
- command,
- channel,
- reqclass,
- &userinfo,
- ip,
- cookie);
+ /* 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
- } else if (reqclass & AIM_CAPS_VOICE) {
- struct aim_msgcookie_t *cachedcook;
+ args->msg = sec->data;
+ args->msglen = sec->datalen;
- printf("faim: rend: voice!\n");
+ return 0;
+ }
+ }
- if(!(cachedcook = (struct aim_msgcookie_t*)calloc(1, sizeof(struct aim_msgcookie_t))))
- return 1;
+ /* No human-readable sections found. Oh well. */
+ args->charset = args->charsubset = 0xffff;
+ args->msg = NULL;
+ args->msglen = 0;
- memcpy(cachedcook->cookie, cookie, 8);
- cachedcook->type = AIM_COOKIETYPE_OFTVOICE;
- cachedcook->data = NULL;
+ return 0;
+}
+
+/*
+ *
+ * This should use tlvlists, but doesn't for performance reasons.
+ *
+ * XXX support multipart IMs:
+ *
+ * 0004 0007 0000 8f08 d295
+ * 0031 6520 3b7b f9fd
+ * 0001
+ * 06 XXXX XXXX XXXX
+ * 0000
+ * 0004
+ * 0001 0002 0004
+ * 0010 0004 0000 01a3
+ * 0002 0004 3ab6 94fa
+ * 0003 0004 3b7b f85a
+ * 0002 003c
+ * 0501 0001 01
+ * 0101 000a 0000 0000 3c48 544d 4c3e ASCII part
+ * ISO-8859 part:
+ * 0101 0016 0003 0000 6c6b 7364 6a6b 6c6a 676c a56b 3b73 646a 6b6a
+ * 0101 000b 0000 0000 3c2f 4854 4d4c 3e another ASCII part
+ *
+ */
+static int incomingim_ch1(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, fu16_t channel, aim_userinfo_t *userinfo, aim_bstream_t *bs, fu8_t *cookie)
+{
+ fu16_t type, length;
+ aim_rxcallback_t userfunc;
+ int ret = 0;
+ struct aim_incomingim_ch1_args args;
+ int endpos;
- if (aim_cachecookie(sess, cachedcook) != 0)
- printf("faim: ERROR caching message cookie\n");
+ memset(&args, 0, sizeof(args));
- /* XXX: implement all this */
+ aim_mpmsg_init(sess, &args.mpmsg);
/*
- * Call client.
+ * 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.
*/
- userfunc = aim_callhandler(command->conn, 0x0004, 0x0007);
- if (userfunc || (i = 0)) {
- i = userfunc(sess, command, channel, reqclass, &userinfo);
- }
- } else if ((reqclass & AIM_CAPS_IMIMAGE) || (reqclass & AIM_CAPS_BUDDYICON)) {
- char ip[30];
- struct aim_directim_priv *priv;
+ while (aim_bstream_empty(bs)) {
- memset(ip, 0, 30);
-
- if (aim_gettlv(list2, 0x0003, 1) && aim_gettlv(list2, 0x0005, 1)) {
- struct aim_tlv_t *iptlv, *porttlv;
-
- iptlv = aim_gettlv(list2, 0x0003, 1);
- porttlv = aim_gettlv(list2, 0x0005, 1);
-
- snprintf(ip, 30, "%d.%d.%d.%d:%d",
- aimutil_get8(iptlv->value+0),
- aimutil_get8(iptlv->value+1),
- aimutil_get8(iptlv->value+2),
- aimutil_get8(iptlv->value+3),
- 4443 /*aimutil_get16(porttlv->value)*/);
+ 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 == 0x0008) { /* I-HAVE-A-REALLY-PURTY-ICON Flag */
+
+ args.iconsum = aimbs_get32(bs);
+ args.iconlen = aimbs_get32(bs);
+ args.iconstamp = aimbs_get32(bs);
+ 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 {
+ faimdprintf(sess, 0, "incomingim_ch1: unknown TLV 0x%04x (len %d)\n", type, length);
+ }
+
+ /*
+ * 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);
}
- printf("faim: rend: directIM request from %s (%s)\n",
- userinfo.sn,
- ip);
- /* XXX: there are a couple of different request packets for
- * different things */
-
- priv = (struct aim_directim_priv *)calloc(1, sizeof(struct aim_directim_priv));
- memcpy(priv->ip, ip, sizeof(priv->ip));
- memcpy(priv->sn, userinfo.sn, sizeof(priv->sn));
- memcpy(priv->cookie, cookie, sizeof(priv->cookie));
+ if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
+ ret = userfunc(sess, rx, channel, userinfo, &args);
+
+ aim_mpmsg_free(sess, &args.mpmsg);
+ free(args.extdata);
+
+ return ret;
+}
+
+static int incomingim_ch2_buddylist(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_tlvlist_t *list2)
+{
+ aim_rxcallback_t userfunc;
+ int ret = 0;
+ aim_tlv_t *tse;
+ aim_bstream_t tbs;
+
+ if (args->status != 0x0000)
+ return 1; /* ignore it -- not sure what it means */
+
+ tse = aim_gettlv(list2, 0x2711, 1);
+ aim_bstream_init(&tbs, tse->value, tse->length);
/*
- * Call client.
+ * This goes like this...
+ *
+ * group name length
+ * group name
+ * num of buddies in group
+ * buddy name length
+ * buddy name
+ * buddy name length
+ * buddy name
+ * ...
+ * group name length
+ * group name
+ * num of buddies in group
+ * buddy name length
+ * buddy name
+ * ...
+ * ...
*/
- userfunc = aim_callhandler(command->conn, 0x0004, 0x0007);
- if (userfunc || (i = 0))
- i = userfunc(sess,
- command,
- channel,
- reqclass,
- &userinfo, priv);
-
- } else if (reqclass & AIM_CAPS_CHAT) {
- struct aim_tlv_t *miscinfo;
- struct aim_chat_roominfo roominfo;
- char *msg=NULL,*encoding=NULL,*lang=NULL;
+ while (aim_bstream_empty(&tbs)) {
+ fu16_t gnlen, numb;
+ int i;
+ char *gn;
+
+ gnlen = aimbs_get16(&tbs);
+ gn = aimbs_getstr(&tbs, gnlen);
+ numb = aimbs_get16(&tbs);
+
+ for (i = 0; i < numb; i++) {
+ fu16_t bnlen;
+ char *bn;
+
+ bnlen = aimbs_get16(&tbs);
+ bn = aimbs_getstr(&tbs, bnlen);
+
+ faimdprintf(sess, 0, "got a buddy list from %s: group %s, buddy %s\n", userinfo->sn, gn, bn);
+
+ free(bn);
+ }
+
+ free(gn);
+ }
+
+ if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
+ ret = userfunc(sess, rx, 0x0002, userinfo, args);
+
+ return ret;
+}
+
+static int incomingim_ch2_buddyicon(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_tlvlist_t *list2)
+{
+ aim_rxcallback_t userfunc;
+ int ret = 0;
+ aim_tlv_t *miscinfo;
+ aim_bstream_t tbs;
+
+ if (!(miscinfo = aim_gettlv(list2, 0x2711, 1)))
+ return 0;
+ aim_bstream_init(&tbs, miscinfo->value, miscinfo->length);
+
+ args->info.icon.checksum = aimbs_get32(&tbs);
+ args->info.icon.length = aimbs_get32(&tbs);
+ args->info.icon.timestamp = aimbs_get32(&tbs);
+ args->info.icon.icon = aimbs_getraw(&tbs, args->info.icon.length);
+
+ if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
+ ret = userfunc(sess, rx, 0x0002, userinfo, args);
+
+ free(args->info.icon.icon);
+
+ return ret;
+}
+
+static int incomingim_ch2_voice(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_tlvlist_t *list2)
+{
+ aim_msgcookie_t *cachedcook;
+ int ret = 0;
+ aim_rxcallback_t userfunc;
+
+ faimdprintf(sess, 1, "rend: voice!\n");
+
+ if (!(cachedcook = (aim_msgcookie_t*)calloc(1, sizeof(aim_msgcookie_t))))
+ return 0;
+
+ memcpy(cachedcook->cookie, args->cookie, 8);
+ cachedcook->type = AIM_COOKIETYPE_OFTVOICE;
+ cachedcook->data = NULL;
+
+ if (aim_cachecookie(sess, cachedcook) == -1)
+ faimdprintf(sess, 0, "ERROR caching message cookie\n");
+
+ /* XXX: implement all this */
+
+ if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
+ ret = userfunc(sess, rx, 0x0002, userinfo, args);
+
+ return ret;
+}
+
+static int 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_tlvlist_t *list2)
+{
+ aim_tlv_t *miscinfo;
+ aim_bstream_t tbs;
+ aim_rxcallback_t userfunc;
+ int ret = 0;
miscinfo = aim_gettlv(list2, 0x2711, 1);
- aim_chat_readroominfo(miscinfo->value, &roominfo);
+ aim_bstream_init(&tbs, miscinfo->value, miscinfo->length);
+
+ aim_chat_readroominfo(&tbs, &args->info.chat.roominfo);
if (aim_gettlv(list2, 0x000c, 1))
- msg = aim_gettlv_str(list2, 0x000c, 1);
-
+ args->info.chat.msg = aim_gettlv_str(list2, 0x000c, 1);
+
if (aim_gettlv(list2, 0x000d, 1))
- encoding = aim_gettlv_str(list2, 0x000d, 1);
-
+ args->info.chat.encoding = aim_gettlv_str(list2, 0x000d, 1);
+
if (aim_gettlv(list2, 0x000e, 1))
- lang = aim_gettlv_str(list2, 0x000e, 1);
-
- /*
- * Call client.
- */
- userfunc = aim_callhandler(command->conn, 0x0004, 0x0007);
- if (userfunc || (i = 0))
- i = userfunc(sess,
- command,
- channel,
- reqclass,
- &userinfo,
- &roominfo,
- msg,
- encoding?encoding+1:NULL,
- lang?lang+1:NULL);
- free(roominfo.name);
- free(msg);
- free(encoding);
- free(lang);
- } else if (reqclass & AIM_CAPS_GETFILE) {
- char ip[30];
- struct aim_msgcookie_t *cachedcook;
- struct aim_tlv_t *miscinfo;
+ args->info.chat.lang = aim_gettlv_str(list2, 0x000e, 1);
- if (!(cachedcook = calloc(1, sizeof(struct aim_msgcookie_t))))
- return 0;
+ if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
+ ret = userfunc(sess, rx, 0x0002, userinfo, args);
+
+ /* XXX free_roominfo */
+ free(args->info.chat.roominfo.name);
+ free(args->info.chat.msg);
+ free(args->info.chat.encoding);
+ free(args->info.chat.lang);
+
+ return ret;
+}
+
+static int incomingim_ch2_getfile(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_tlvlist_t *list2)
+{
+ char ip[30];
+ aim_msgcookie_t *cachedcook;
+ aim_tlv_t *miscinfo;
+ aim_tlv_t *iptlv, *porttlv;
+ int ret = 0;
+ aim_rxcallback_t userfunc;
memset(ip, 0, 30);
- if (!(miscinfo = aim_gettlv(list2, 0x2711, 1))) {
- free(cachedcook);
- return 0;
+ if (!(cachedcook = calloc(1, sizeof(aim_msgcookie_t)))) {
+ aim_freetlvchain(&list2);
+ return 0;
}
- if (aim_gettlv(list2, 0x0003, 1) && aim_gettlv(list2, 0x0005, 1)) {
- struct aim_tlv_t *iptlv, *porttlv;
+ if (!(miscinfo = aim_gettlv(list2, 0x2711, 1)) ||
+ !(iptlv = aim_gettlv(list2, 0x0003, 1)) ||
+ !(porttlv = aim_gettlv(list2, 0x0005, 1))) {
+
+ faimdprintf(sess, 0, "rend: badly damaged file get request from %s...\n", userinfo->sn);
+ aim_cookie_free(sess, cachedcook);
+ aim_freetlvchain(&list2);
+
+ return 0;
+ }
- if (!(iptlv = aim_gettlv(list2, 0x0003, 1)) || !(porttlv = aim_gettlv(list2, 0x0005, 1))) {
- free(cachedcook);
- return 0;
- }
+ snprintf(ip, 30, "%d.%d.%d.%d:%d",
+ aimutil_get8(iptlv->value+0),
+ aimutil_get8(iptlv->value+1),
+ aimutil_get8(iptlv->value+2),
+ aimutil_get8(iptlv->value+3),
+ aimutil_get16(porttlv->value));
- snprintf(ip, 30, "%d.%d.%d.%d:%d",
- aimutil_get8(iptlv->value+0),
- aimutil_get8(iptlv->value+1),
- aimutil_get8(iptlv->value+2),
- aimutil_get8(iptlv->value+3),
- aimutil_get16(porttlv->value));
- }
+ faimdprintf(sess, 0, "rend: file get request from %s (%s)\n", userinfo->sn, ip);
- printf("faim: rend: file get request from %s (%s)\n", userinfo.sn, ip);
+ args->info.getfile.ip = ip;
+ memcpy(args->info.getfile.cookie, args->cookie, 8);
- /*
- * Call client.
- */
- userfunc = aim_callhandler(command->conn, 0x0004, 0x0007);
- if (userfunc || (i = 0))
- i = userfunc(sess,
- command,
- channel,
- reqclass,
- &userinfo,
- ip,
- cookie);
-
- } else if (reqclass & AIM_CAPS_SENDFILE) {
+ if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
+ ret = userfunc(sess, rx, 0x0002, userinfo, args);
+
+ return ret;
+}
+
+static int incomingim_ch2_sendfile(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_tlvlist_t *list2)
+{
#if 0
- char ip[30];
- char *desc = NULL;
- struct aim_msgcookie_t *cachedcook;
- struct aim_filetransfer_priv *ft;
- struct aim_tlv_t *miscinfo;
+ char ip[30];
+ aim_msgcookie_t *cachedcook;
+ aim_tlv_t *miscinfo;
+ aim_tlv_t *iptlv, *porttlv;
+ int ret =0;
+ aim_rxcallback_t userfunc;
+ char *desc = NULL;
+
+ memset(ip, 0, 30);
- memset(ip, 0, sizeof(ip));
+ if (!(cachedcook = calloc(1, sizeof(aim_msgcookie_t))))
+ return 0;
+
+ if (!(miscinfo = aim_gettlv(list2, 0x2711, 1)) ||
+ !(iptlv = aim_gettlv(list2, 0x0003, 1)) ||
+ !(porttlv = aim_gettlv(list2, 0x0005, 1))) {
- if (!(miscinfo = aim_gettlv(list2, 0x2711, 1)))
- return 0;
-
- if (aim_gettlv(list2, 0x0003, 1) && aim_gettlv(list2, 0x0003, 1)) {
- struct aim_tlv_t *iptlv, *porttlv;
-
- iptlv = aim_gettlv(list2, 0x0003, 1);
- porttlv = aim_gettlv(list2, 0x0005, 1);
-
- snprintf(ip, sizeof(ip)-1, "%d.%d.%d.%d:%d",
- aimutil_get8(iptlv->value+0),
- aimutil_get8(iptlv->value+1),
- aimutil_get8(iptlv->value+2),
- aimutil_get8(iptlv->value+3),
- aimutil_get16(porttlv->value));
- }
+ faimdprintf(sess, 0, "rend: badly damaged file get request from %s...\n", userinfo->sn);
+ aim_cookie_free(sess, cachedcook);
- if (aim_gettlv(list2, 0x000c, 1)) {
- desc = aim_gettlv_str(list2, 0x000c, 1);
+ return 0;
}
- printf("faim: rend: file transfer request from %s for %s: %s (%s)\n",
- userinfo.sn,
- miscinfo->value+8,
- desc,
- ip);
-
- memcpy(cachedcook->cookie, cookie, 8);
-
- ft = malloc(sizeof(struct aim_filetransfer_priv));
+ snprintf(ip, 30, "%d.%d.%d.%d:%d",
+ aimutil_get8(iptlv->value+0),
+ aimutil_get8(iptlv->value+1),
+ aimutil_get8(iptlv->value+2),
+ aimutil_get8(iptlv->value+3),
+ aimutil_get16(porttlv->value));
+
+ if (aim_gettlv(list2, 0x000c, 1))
+ desc = aim_gettlv_str(list2, 0x000c, 1);
+
+ faimdprintf(sess, 0, "rend: file transfer request from %s: %s (%s)\n",
+ userinfo->sn, desc, ip);
+
+ memcpy(cachedcook->cookie, args->cookie, 8);
+
+ ft = malloc(sizeof(struct aim_filetransfer_priv)); /* XXX */
strncpy(ft->sn, userinfo.sn, sizeof(ft->sn));
strncpy(ft->ip, ip, sizeof(ft->ip));
strncpy(ft->fh.name, miscinfo->value+8, sizeof(ft->fh.name));
cachedcook->type = AIM_COOKIETYPE_OFTSEND;
cachedcook->data = ft;
- if (aim_cachecookie(sess, cachedcook) != 0)
- printf("faim: ERROR caching message cookie\n");
-
-
- aim_accepttransfer(sess, command->conn, ft->sn, cookie, AIM_CAPS_SENDFILE);
-
+ if (aim_cachecookie(sess, cachedcook) == -1)
+ faimdprintf(sess, 0, "ERROR caching message cookie\n");
+
+ aim_accepttransfer(sess, rx->conn, ft->sn, cookie, AIM_CAPS_SENDFILE);
+
if (desc)
- free(desc);
-#endif
+ free(desc);
+
+ if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
+ ret = userfunc(sess, rx, 0x0002, userinfo, &args);
+#endif
+ return 0;
+}
+
+static int incomingim_ch2_imimage(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_tlvlist_t *list2)
+{
+ aim_rxcallback_t userfunc;
+ int ret = 0;
+
+ /* Primary IP address */
+ if (aim_gettlv(list2, 0x0003, 1)) {
+ aim_tlv_t *tlv;
+
+ tlv = aim_gettlv(list2, 0x0003, 1);
+
+ snprintf(args->info.imimage.ip, sizeof(args->info.imimage.ip),
+ "%d.%d.%d.%d:4443",
+ tlv->value[0],
+ tlv->value[1],
+ tlv->value[2],
+ tlv->value[3]);
+ }
+
+ /*
+ * Alternate IP address
+ *
+ * Sort of. The peer doesn't send this -- the OSCAR
+ * server does. So it will be the IP address that the
+ * peer is directly connected to the internet with, which
+ * may not be the same as the IP above. If these two
+ * values differ, it's rather unlikely that this
+ * rendezvous is going to happen...
+ *
+ */
+ if (aim_gettlv(list2, 0x0004, 1))
+ ;
+
+ /* Port number (not correct -- ignore) */
+ if (aim_gettlv(list2, 0x0005, 1))
+ ;
+
+ /* Unknown -- two bytes = 0x0001 */
+ if (aim_gettlv(list2, 0x000a, 1))
+ ;
+
+ /* Unknown -- no value */
+ if (aim_gettlv(list2, 0x000f, 1))
+ ;
+
+ faimdprintf(sess, 1, "rend: directIM request from %s (%s)\n", userinfo->sn, args->info.imimage.ip);
+
+ /*
+ * XXX: there are a couple of different request packets for
+ * different things
+ */
+
+ if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
+ ret = userfunc(sess, rx, 0x0002, userinfo, args);
+
+ return ret;
+}
+
+/* XXX Ugh. I think its obvious. */
+static int incomingim_ch2(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, fu16_t channel, aim_userinfo_t *userinfo, aim_tlvlist_t *tlvlist, fu8_t *cookie)
+{
+ aim_tlv_t *block1;
+ aim_tlvlist_t *list2;
+ int ret = 0;
+ struct aim_incomingim_ch2_args args;
+ aim_bstream_t bbs;
+ fu8_t *cookie2;
+
+ memset(&args, 0, sizeof(args));
+
/*
- * Call client.
+ * There's another block of TLVs embedded in the type 5 here.
*/
- userfunc = aim_callhandler(command->conn, 0x0004, 0x0007);
- if (userfunc || (i = 0))
- i = userfunc(sess,
- command,
- channel,
- reqclass,
- &userinfo);
- } else {
- printf("faim: rend: unknown rendezvous 0x%04x\n", reqclass);
- }
+ if (!(block1 = aim_gettlv(tlvlist, 0x0005, 1)) || !block1->value) {
+ faimdprintf(sess, 0, "no tlv 0x0005 in rendezvous transaction!\n");
+ return 0;
+ }
- aim_freetlvchain(&list2);
- }
+ aim_bstream_init(&bbs, block1->value, block1->length);
- /*
- * Free up the TLV chain.
- */
- aim_freetlvchain(&tlvlist);
-
+ /*
+ * First two bytes represent the status of the connection.
+ *
+ * 0 is a request, 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)
+ faimdprintf(sess, 0, "rend: warning cookies don't match!\n");
+ memcpy(args.cookie, cookie2, 8);
+ free(cookie2);
- return i;
+ /*
+ * The next 16bytes are a capability block so we can
+ * identify what type of rendezvous this is.
+ *
+ * Thanks to Eric Warmenhoven <warmenhoven@linux.com> (of GAIM)
+ * for pointing some of this out to me. In fact, a lot of
+ * the client-to-client info comes from the work of the GAIM
+ * developers. Thanks!
+ *
+ * Read off one capability string and we should have it ID'd.
+ *
+ */
+ if ((args.reqclass = aim_getcap(sess, &bbs, 0x10)) == 0x0000) {
+ faimdprintf(sess, 0, "rend: no ID block\n");
+ return 0;
+ }
+
+ /*
+ * 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);
+
+#if 0 /* this should be in the per-type blocks */
+ if (!list2 || ((args.reqclass != AIM_CAPS_IMIMAGE) && !(aim_gettlv(list2, 0x2711, 1)))) {
+ aim_msgcookie_t *cook;
+ int type;
+
+ type = aim_msgcookie_gettype(args.reqclass); /* XXX: fix this shitty code */
+
+ if ((cook = aim_checkcookie(sess, cookie, type)) == NULL) {
+ faimdprintf(sess, 0, "non-data rendezvous thats not in cache (type %d)\n", type);
+ aim_freetlvchain(&list2);
+ return 1;
+ }
+
+ if (cook->type == AIM_COOKIETYPE_OFTGET) {
+ struct aim_filetransfer_priv *ft;
+
+ if (cook->data) {
+ int errorcode = -1; /* XXX shouldnt this be 0? */
+
+ ft = (struct aim_filetransfer_priv *)cook->data;
+
+ if (args.status != 0x0002) {
+
+ if (aim_gettlv(list2, 0x000b, 1))
+ errorcode = aim_gettlv16(list2, 0x000b, 1);
+
+ /* XXX this should make it up to the client, you know.. */
+ if (errorcode)
+ faimdprintf(sess, 0, "transfer from %s (%s) for %s cancelled (error code %d)\n", ft->sn, ft->ip, ft->fh.name, errorcode);
+ } /* args.status != 0x0002 */
+
+ } else {
+ faimdprintf(sess, 0, "no data attached to file transfer\n");
+ } /* !cook->data */
+
+ } else if (cook->type == AIM_CAPS_VOICE) {
+
+ faimdprintf(sess, 0, "voice request cancelled\n");
+
+ } else {
+
+ faimdprintf(sess, 0, "unknown cookie cache type %d\n", cook->type);
+ }
+
+ aim_freetlvchain(&list2);
+
+ return 1;
+ }
+#endif
+
+ /*
+ * The rest of the handling depends on what type it is.
+ */
+ if (args.reqclass & AIM_CAPS_BUDDYICON)
+ ret = incomingim_ch2_buddyicon(sess, mod, rx, snac, userinfo, &args, list2);
+ else if (args.reqclass & AIM_CAPS_SENDBUDDYLIST)
+ ret = incomingim_ch2_buddylist(sess, mod, rx, snac, userinfo, &args, list2);
+ else if (args.reqclass & AIM_CAPS_VOICE)
+ ret = incomingim_ch2_voice(sess, mod, rx, snac, userinfo, &args, list2);
+ else if (args.reqclass & AIM_CAPS_IMIMAGE)
+ ret = incomingim_ch2_imimage(sess, mod, rx, snac, userinfo, &args, list2);
+ else if (args.reqclass & AIM_CAPS_CHAT)
+ ret = incomingim_ch2_chat(sess, mod, rx, snac, userinfo, &args, list2);
+ else if (args.reqclass & AIM_CAPS_GETFILE)
+ ret = incomingim_ch2_getfile(sess, mod, rx, snac, userinfo, &args, list2);
+ else if (args.reqclass & AIM_CAPS_SENDFILE)
+ ret = incomingim_ch2_sendfile(sess, mod, rx, snac, userinfo, &args, list2);
+ else
+ faimdprintf(sess, 0, "rend: unknown rendezvous 0x%04x\n", args.reqclass);
+
+ aim_freetlvchain(&list2);
+
+ 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;
+ fu8_t cookie[8];
+ fu16_t 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 = 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 == 0x0002) {
+ 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);
+
+ /*
+ * Free up the TLV chain.
+ */
+ aim_freetlvchain(&tlvlist);
+ } else {
+ faimdprintf(sess, 0, "icbm: ICBM received on an unsupported channel. Ignoring.\n (chan = %04x)", channel);
+ return 0;
+ }
+
+ return ret;
}
/*
* AIM_TRANSFER_DENY_NOTACCEPTING -- "client is not accepting transfers"
*
*/
-faim_export unsigned long aim_denytransfer(struct aim_session_t *sess,
- struct aim_conn_t *conn,
- char *sender,
- char *cookie,
- unsigned short code)
+faim_export int aim_denytransfer(aim_session_t *sess, aim_conn_t *conn, const char *sender, const char *cookie, fu16_t code)
{
- struct command_tx_struct *newpacket;
- int curbyte, i;
+ aim_frame_t *fr;
+ aim_snacid_t snacid;
+ aim_tlvlist_t *tl = NULL;
+
+ if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 10+8+2+1+strlen(sender)+6)))
+ return -ENOMEM;
- if(!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 10+8+2+1+strlen(sender)+6)))
- return -1;
+ snacid = aim_cachesnac(sess, 0x0004, 0x000b, 0x0000, NULL, 0);
+ aim_putsnac(&fr->data, 0x0004, 0x000b, 0x0000, snacid);
+
+ aimbs_putraw(&fr->data, cookie, 8);
- newpacket->lock = 1;
+ aimbs_put16(&fr->data, 0x0002); /* channel */
+ aimbs_put8(&fr->data, strlen(sender));
+ aimbs_putraw(&fr->data, sender, strlen(sender));
- curbyte = aim_putsnac(newpacket->data, 0x0004, 0x000b, 0x0000, sess->snac_nextid);
- for (i = 0; i < 8; i++)
- curbyte += aimutil_put8(newpacket->data+curbyte, cookie[i]);
- curbyte += aimutil_put16(newpacket->data+curbyte, 0x0002);
- curbyte += aimutil_put8(newpacket->data+curbyte, strlen(sender));
- curbyte += aimutil_putstr(newpacket->data+curbyte, sender, strlen(sender));
- curbyte += aim_puttlv_16(newpacket->data+curbyte, 0x0003, code);
+ aim_addtlvtochain16(&tl, 0x0003, code);
+ aim_writetlvchain(&fr->data, &tl);
+ aim_freetlvchain(&tl);
- newpacket->lock = 0;
- aim_tx_enqueue(sess, newpacket);
+ aim_tx_enqueue(sess, fr);
- return (sess->snac_nextid++);
+ return 0;
}
/*
- * Not real sure what this does, nor does anyone I've talk to.
+ * aim_reqicbmparaminfo()
*
- * Didn't use to send it. But now I think it might be a good
- * idea.
+ * Request ICBM parameter information.
+ *
+ */
+faim_export int aim_reqicbmparams(aim_session_t *sess, aim_conn_t *conn)
+{
+ 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.
+ *
*/
-faim_export unsigned long aim_seticbmparam(struct aim_session_t *sess,
- struct aim_conn_t *conn)
-{
- struct command_tx_struct *newpacket;
- int curbyte;
-
- if(!(newpacket = aim_tx_new(AIM_FRAMETYPE_OSCAR, 0x0002, conn, 10+16)))
- return -1;
-
- newpacket->lock = 1;
-
- curbyte = aim_putsnac(newpacket->data, 0x0004, 0x0002, 0x0000, sess->snac_nextid);
- curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000);
- curbyte += aimutil_put32(newpacket->data+curbyte, 0x00000003);
- curbyte += aimutil_put8(newpacket->data+curbyte, 0x1f);
- curbyte += aimutil_put8(newpacket->data+curbyte, 0x40);
- curbyte += aimutil_put8(newpacket->data+curbyte, 0x03);
- curbyte += aimutil_put8(newpacket->data+curbyte, 0xe7);
- curbyte += aimutil_put8(newpacket->data+curbyte, 0x03);
- curbyte += aimutil_put8(newpacket->data+curbyte, 0xe7);
- curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000);
- curbyte += aimutil_put16(newpacket->data+curbyte, 0x0000);
-
- newpacket->lock = 0;
- aim_tx_enqueue(sess, newpacket);
-
- return (sess->snac_nextid++);
-}
-
-faim_internal int aim_parse_msgerror_middle(struct aim_session_t *sess,
- struct command_rx_struct *command)
-{
- u_long snacid = 0x000000000;
- struct aim_snac_t *snac = NULL;
- int ret = 0;
- rxcallback_t userfunc = NULL;
- char *dest;
- unsigned short reason = 0;
-
- /*
- * Get SNAC from packet and look it up
- * the list of unrepliedto/outstanding
- * SNACs.
- *
- * After its looked up, the SN that the
- * message should've gone to will be
- * in the ->data element of the snac struct.
- *
- */
- snacid = aimutil_get32(command->data+6);
- snac = aim_remsnac(sess, snacid);
-
- if (!snac) {
- printf("faim: msgerr: got an ICBM-failed error on an unknown SNAC ID! (%08lx)\n", snacid);
- dest = NULL;
- } else
- dest = snac->data;
-
- reason = aimutil_get16(command->data+10);
-
- /*
- * Call client.
- */
- userfunc = aim_callhandler(command->conn, 0x0004, 0x0001);
- if (userfunc)
- ret = userfunc(sess, command, dest, reason);
- else
- ret = 0;
-
- if (snac) {
- free(snac->data);
- free(snac);
- }
-
- return ret;
-}
-
-
-faim_internal int aim_parse_missedcall(struct aim_session_t *sess,
- struct command_rx_struct *command)
-{
- int i, ret = 1;
- rxcallback_t userfunc = NULL;
- unsigned short channel, nummissed, reason;
- struct aim_userinfo_s userinfo;
-
- i = 10; /* Skip SNAC header */
-
-
- /*
- * XXX: supposedly, this entire packet can repeat as many times
- * as necessary. Should implement that.
- */
-
- /*
- * Channel ID.
- */
- channel = aimutil_get16(command->data+i);
- i += 2;
-
- /*
- * Extract the standard user info block.
- */
- i += aim_extractuserinfo(command->data+i, &userinfo);
-
- nummissed = aimutil_get16(command->data+i);
- i += 2;
-
- reason = aimutil_get16(command->data+i);
- i += 2;
-
- /*
- * Call client.
- */
- userfunc = aim_callhandler(command->conn, 0x0004, 0x000a);
- if (userfunc)
- ret = userfunc(sess, command, channel, &userinfo, nummissed, reason);
- else
- ret = 0;
-
- return ret;
+faim_export int aim_seticbmparam(aim_session_t *sess, aim_conn_t *conn, struct aim_icbmparameters *params)
+{
+ aim_frame_t *fr;
+ aim_snacid_t snacid;
+
+ if (!sess || !conn || !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;
+ fu16_t 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;
+}
+
+static int clienterr(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;
+ fu16_t channel, reason;
+ char *sn;
+ fu8_t *ck, snlen;
+
+ ck = aimbs_getraw(bs, 8);
+ channel = aimbs_get16(bs);
+ snlen = aimbs_get8(bs);
+ sn = aimbs_getstr(bs, snlen);
+ reason = aimbs_get16(bs);
+
+ if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
+ ret = userfunc(sess, rx, channel, sn, reason);
+
+ free(ck);
+ 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;
+ fu16_t type;
+ fu8_t 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);
+
+ free(sn);
+ free(ck);
+
+ 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 clienterr(sess, mod, rx, snac, bs);
+ else if (snac->subtype == 0x000c)
+ return msgack(sess, mod, rx, snac, bs);
+
+ return 0;
+}
+
+faim_internal int msg_modfirst(aim_session_t *sess, aim_module_t *mod)
+{
+
+ mod->family = 0x0004;
+ mod->version = 0x0000;
+ mod->flags = 0;
+ strncpy(mod->name, "messaging", sizeof(mod->name));
+ mod->snachandler = snachandler;
+
+ return 0;
}
andersk / libfaim.git / blobdiff