int aim_parse_incoming_im_middle(struct aim_session_t *sess,
struct command_rx_struct *command)
{
- struct aim_userinfo_s userinfo;
- u_int i = 0, j = 0, y = 0, z = 0;
- char *msg = NULL;
- u_int icbmflags = 0;
+ u_int i = 0,z;
rxcallback_t userfunc = NULL;
u_char cookie[8];
int channel;
struct aim_tlvlist_t *tlvlist;
- struct aim_tlv_t *msgblocktlv, *tmptlv;
- u_char *msgblock;
+ struct aim_userinfo_s userinfo;
u_short wastebits;
- u_short flag1,flag2;
memset(&userinfo, 0x00, sizeof(struct aim_userinfo_s));
-
+
i = 10; /* Skip SNAC header */
/*
* 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. We only support
- * standard messages; those on channel 0x0001.
+ * features of AIM2/3/3.5.
+ *
+ * Channel 0x0002 is the Rendevous channel, which
+ * is where Chat Invitiations come from.
+ *
*/
channel = aimutil_get16(command->data+i);
i += 2;
- if (channel != 0x0001)
+
+ /*
+ *
+ */
+ if ((channel != 0x01) && (channel != 0x02))
{
printf("faim: icbm: ICBM received on an unsupported channel. Ignoring.\n (chan = %04x)", channel);
return 1;
i += 1 + (int)command->data[i];
/*
- * Unknown bits.
+ * Warning Level
*/
- wastebits = aimutil_get16(command->data+i);
+ userinfo.warnlevel = aimutil_get16(command->data+i); /* guess */
i += 2;
+
+ /*
+ * Number of TLVs that follow. Not needed.
+ */
wastebits = aimutil_get16(command->data+i);
i += 2;
-
+
/*
* Read block of TLVs. All further data is derived
* from what is parsed here.
tlvlist = aim_readtlvchain(command->data+i, command->commandlen-i);
/*
- * Check Autoresponse status. If it is an autoresponse,
- * it will contain a second type 0x0004 TLV, with zero length.
- */
- if (aim_gettlv(tlvlist, 0x0004, 2))
- icbmflags |= AIM_IMFLAGS_AWAY;
-
- /*
- * Check Ack Request status.
- */
- if (aim_gettlv(tlvlist, 0x0003, 2))
- icbmflags |= AIM_IMFLAGS_ACK;
-
- /*
- * Extract the various pieces of the userinfo struct.
+ * From here on, its depends on what channel we're on.
*/
- /* Class. */
- if ((tmptlv = aim_gettlv(tlvlist, 0x0001, 1)))
- userinfo.class = aimutil_get16(tmptlv->value);
- /* Member-since date. */
- if ((tmptlv = aim_gettlv(tlvlist, 0x0002, 1)))
+ if (channel == 1)
{
- /* If this is larger than 4, its probably the message block, skip */
- if (tmptlv->length <= 4)
- userinfo.membersince = aimutil_get32(tmptlv->value);
+ u_int j = 0, y = 0, z = 0;
+ char *msg = NULL;
+ u_int icbmflags = 0;
+ struct aim_tlv_t *msgblocktlv, *tmptlv;
+ u_char *msgblock;
+ u_short flag1,flag2;
+
+ /*
+ * Check Autoresponse status. If it is an autoresponse,
+ * it will contain a second type 0x0004 TLV, with zero length.
+ */
+ if (aim_gettlv(tlvlist, 0x0004, 2))
+ icbmflags |= AIM_IMFLAGS_AWAY;
+
+ /*
+ * Check Ack Request status.
+ */
+ if (aim_gettlv(tlvlist, 0x0003, 2))
+ icbmflags |= AIM_IMFLAGS_ACK;
+
+ /*
+ * Extract the various pieces of the userinfo struct.
+ */
+ /* Class. */
+ if ((tmptlv = aim_gettlv(tlvlist, 0x0001, 1)))
+ userinfo.class = aimutil_get16(tmptlv->value);
+ /* Member-since date. */
+ if ((tmptlv = aim_gettlv(tlvlist, 0x0002, 1)))
+ {
+ /* If this is larger than 4, its probably the message block, skip */
+ if (tmptlv->length <= 4)
+ userinfo.membersince = aimutil_get32(tmptlv->value);
+ }
+ /* On-since date */
+ if ((tmptlv = aim_gettlv(tlvlist, 0x0003, 1)))
+ userinfo.onlinesince = aimutil_get32(tmptlv->value);
+ /* Idle-time */
+ if ((tmptlv = aim_gettlv(tlvlist, 0x0004, 1)))
+ userinfo.idletime = aimutil_get16(tmptlv->value);
+ /* Session Length (AIM) */
+ if ((tmptlv = aim_gettlv(tlvlist, 0x000f, 1)))
+ userinfo.sessionlen = aimutil_get16(tmptlv->value);
+ /* Session Length (AOL) */
+ if ((tmptlv = aim_gettlv(tlvlist, 0x0010, 1)))
+ userinfo.sessionlen = aimutil_get16(tmptlv->value);
+
+ /*
+ * Message block.
+ *
+ * XXX: Will the msgblock always be the second 0x0002?
+ */
+ msgblocktlv = aim_gettlv(tlvlist, 0x0002, 1);
+ if (!msgblocktlv)
+ {
+ printf("faim: icbm: major error! no message block TLV found!\n");
+ aim_freetlvchain(&tlvlist);
+ }
+
+ /*
+ * 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);
}
- /* On-since date */
- if ((tmptlv = aim_gettlv(tlvlist, 0x0003, 1)))
- userinfo.onlinesince = aimutil_get32(tmptlv->value);
- /* Idle-time */
- if ((tmptlv = aim_gettlv(tlvlist, 0x0004, 1)))
- userinfo.idletime = aimutil_get16(tmptlv->value);
- /* Session Length (AIM) */
- if ((tmptlv = aim_gettlv(tlvlist, 0x000f, 1)))
- userinfo.sessionlen = aimutil_get16(tmptlv->value);
- /* Session Length (AOL) */
- if ((tmptlv = aim_gettlv(tlvlist, 0x0010, 1)))
- userinfo.sessionlen = aimutil_get16(tmptlv->value);
-
- /*
- * Message block.
- *
- * XXX: Will the msgblock always be the second 0x0002?
- */
- msgblocktlv = aim_gettlv(tlvlist, 0x0002, 1);
- if (!msgblocktlv)
- {
- printf("faim: icbm: major error! no message block TLV found!\n");
- aim_freetlvchain(&tlvlist);
+ else if (channel == 0x0002)
+ {
+ int rendtype;
+ struct aim_tlv_t *block1;
+ struct aim_tlvlist_t *list2;
+ struct aim_tlv_t *tmptlv;
+ int a;
+
+ /* Class. */
+ if ((tmptlv = aim_gettlv(tlvlist, 0x0001, 1)))
+ userinfo.class = aimutil_get16(tmptlv->value);
+ /* On-since date */
+ if ((tmptlv = aim_gettlv(tlvlist, 0x0003, 1)))
+ userinfo.onlinesince = aimutil_get32(tmptlv->value);
+ /* Idle-time */
+ if ((tmptlv = aim_gettlv(tlvlist, 0x0004, 1)))
+ userinfo.idletime = aimutil_get16(tmptlv->value);
+ /* Session Length (AIM) */
+ if ((tmptlv = aim_gettlv(tlvlist, 0x000f, 1)))
+ userinfo.sessionlen = aimutil_get16(tmptlv->value);
+ /* Session Length (AOL) */
+ if ((tmptlv = aim_gettlv(tlvlist, 0x0010, 1)))
+ userinfo.sessionlen = aimutil_get16(tmptlv->value);
+
+ /*
+ * There's another block of TLVs embedded in the type 5 here.
+ */
+ block1 = aim_gettlv(tlvlist, 0x0005, 1);
+ if (!block1)
+ return 1; /* major problem */
+
+ a = 0x1a; /* skip -- not sure what this information is! */
+
+ /*
+ * XXX: Ignore if there's no data, only cookie information.
+ *
+ * Its probably just an accepted invitation or something.
+ *
+ */
+ if (block1->length <= 0x1a)
+ {
+ aim_freetlvchain(&tlvlist);
+ return 1;
+ }
+
+ list2 = aim_readtlvchain(block1->value+a, block1->length-a);
+
+ if (aim_gettlv(list2, 0x0004, 1) /* start connection */ ||
+ aim_gettlv(list2, 0x000b, 1) /* close conncetion */)
+ {
+ rendtype = 1; /* voice request */
+
+ /*
+ * Call client.
+ */
+ userfunc = aim_callhandler(command->conn, 0x0004, 0x0007);
+ if (userfunc)
+ i = userfunc(sess,
+ command,
+ channel,
+ rendtype,
+ &userinfo);
+ else
+ i = 0;
+ }
+ else
+ {
+ struct aim_chat_roominfo roominfo;
+ char *msg=NULL,*encoding=NULL,*lang=NULL;
+
+ rendtype = 0; /* chat invite */
+ if (aim_gettlv(list2, 0x2711, 1))
+ {
+ struct aim_tlv_t *nametlv;
+
+ nametlv = aim_gettlv(list2, 0x2711, 1);
+ aim_chat_readroominfo(nametlv->value, &roominfo);
+ }
+
+ if (aim_gettlv(list2, 0x000c, 1))
+ msg = aim_gettlv_str(list2, 0x000c, 1);
+
+ if (aim_gettlv(list2, 0x000d, 1))
+ 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 = userfunc(sess,
+ command,
+ channel,
+ rendtype,
+ &userinfo,
+ &roominfo,
+ msg,
+ encoding?encoding+1:NULL,
+ lang?lang+1:NULL);
+ else
+ i = 0;
+
+ free(roominfo.name);
+ free(msg);
+ free(encoding);
+ free(lang);
+ }
+ aim_freetlvchain(&list2);
}
- /*
- * 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';
-
/*
* Free up the TLV chain.
*/
aim_freetlvchain(&tlvlist);
+
- /*
- * Call client.
- */
- userfunc = aim_callhandler(command->conn, 0x0004, 0x0007);
- if (userfunc)
- i = userfunc(sess, command, &userinfo, msg, icbmflags, flag1, flag2);
- else
- i = 0;
-
- free(msg);
-
- return 1;
+ return i;
}
/*
andersk / libfaim.git / blobdiff