*
* This is the initial login request packet.
*
- * The password is encoded before transmition, as per
- * encode_password(). See that function for their
- * stupid method of doing it.
+ * NOTE!! If you want/need to make use of the aim_sendmemblock() function,
+ * then the client information you send here must exactly match the
+ * executable that you're pulling the data from.
*
* Latest WinAIM:
* clientstring = "AOL Instant Messenger (SM), version 4.3.2188/WIN32"
* unknown4a = 0x01
*
* Latest WinAIM that libfaim can emulate without server-side buddylists:
+ * clientstring = "AOL Instant Messenger (SM), version 4.1.2010/WIN32"
+ * major2 = 0x0004
+ * major = 0x0004
+ * minor = 0x0001
+ * minor2 = 0x0000
+ * build = 0x07da
+ * unknown= 0x0000004b
+ *
+ * WinAIM 3.5.1670:
* clientstring = "AOL Instant Messenger (SM), version 3.5.1670/WIN32"
* major2 = 0x0004
* major = 0x0003
return 0;
}
+
/*
- * Stay tuned. I have an explanation for here.
+ * Starting this past week (26 Mar 2001, say), AOL has started sending
+ * this nice little extra SNAC. AFAIK, it has never been used until now.
+ *
+ * The request contains eight bytes. The first four are an offset, the
+ * second four are a length.
*
+ * The offset is an offset into aim.exe when it is mapped during execution
+ * on Win32. So far, AOL has only been requesting bytes in static regions
+ * of memory. (I won't put it past them to start requesting data in
+ * less static regions -- regions that are initialized at run time, but still
+ * before the client recieves this request.)
+ *
+ * When the client recieves the request, it adds it to the current ds
+ * (0x00400000) and dereferences it, copying the data into a buffer which
+ * it then runs directly through the MD5 hasher. The 16 byte output of
+ * the hash is then sent back to the server.
+ *
+ * If the client does not send any data back, or the data does not match
+ * the data that the specific client should have, the client will get the
+ * following message from "AOL Instant Messenger":
+ * "You have been disconnected from the AOL Instant Message Service (SM)
+ * for accessing the AOL network using unauthorized software. You can
+ * download a FREE, fully featured, and authorized client, here
+ * http://www.aol.com/aim/download2.html"
+ * The connection is then closed, recieving disconnect code 1, URL
+ * http://www.aim.aol.com/errors/USER_LOGGED_OFF_NEW_LOGIN.html.
+ *
+ * Note, however, that numerous inconsistencies can cause the above error,
+ * not just sending back a bad hash. Do not immediatly suspect this code
+ * if you get disconnected. AOL and the open/free software community have
+ * played this game for a couple years now, generating the above message
+ * on numerous ocassions.
+ *
+ * Anyway, neener. We win again.
*
*/
static int memrequest(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen)
{
- return 1;
+ rxcallback_t userfunc;
+ unsigned long offset, len;
+
+ offset = aimutil_get32(data);
+ len = aimutil_get32(data+4);
+
+ faimdprintf(sess, 1, "data at 0x%08lx (%d bytes) requested\n", offset, len);
+
+ if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
+ return userfunc(sess, rx, offset, len);
+
+ return 0;
+}
+
+faim_export int aim_sendmemblock(struct aim_session_t *sess, struct aim_conn_t *conn, unsigned long offset, unsigned long len, const unsigned char *buf)
+{
+ struct command_tx_struct *tx;
+ int i = 0;
+
+ if (!sess || !conn || ((offset == 0) && !buf))
+ return 0;
+
+ if (!(tx = aim_tx_new(sess, conn, AIM_FRAMETYPE_OSCAR, 0x0002, 10+2+16)))
+ return -1;
+
+ tx->lock = 1;
+
+ i = aim_putsnac(tx->data, 0x0001, 0x0020, 0x0000, sess->snac_nextid++);
+ i += aimutil_put16(tx->data+i, 0x0010); /* md5 is always 16 bytes */
+
+ if (buf && (len > 0)) { /* use input buffer */
+ md5_state_t state;
+
+ md5_init(&state);
+ md5_append(&state, (const md5_byte_t *)buf, len);
+ md5_finish(&state, (md5_byte_t *)(tx->data+i));
+ i += 0x10;
+
+ } else {
+
+ if ((offset != 0x00001004) || (len != 0x00000004))
+ faimdprintf(sess, 0, "sendmemblock: WARNING: sending bad hash... you will be disconnected soon...\n");
+
+ /*
+ * This data is correct for AIM 3.5.1670, offset 0x1004, length 4
+ *
+ * Using this block is as close to "legal" as you can get without
+ * using an AIM binary.
+ */
+ i += aimutil_put32(tx->data+i, 0x92bd6757);
+ i += aimutil_put32(tx->data+i, 0x3722cbd3);
+ i += aimutil_put32(tx->data+i, 0x2b048ab9);
+ i += aimutil_put32(tx->data+i, 0xd0b1e4ab);
+
+ }
+
+ tx->commandlen = i;
+ tx->lock = 0;
+ aim_tx_enqueue(sess, tx);
+
+ return 0;
}
static int snachandler(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned char *data, int datalen)
andersk / libfaim.git / blobdiff