static int incomingim_ch1(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned short channel, struct aim_userinfo_s *userinfo, unsigned char *data, int datalen, unsigned char *cookie)
{
- unsigned short type, length;
- aim_rxcallback_t userfunc;
- int i, ret = 0;
- struct aim_incomingim_ch1_args args;
-
- memset(&args, 0, sizeof(args));
-
- /*
- * 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.
- */
- for (i = 0; i < datalen; ) {
-
- type = aimutil_get16(data+i);
- i += 2;
-
- length = aimutil_get16(data+i);
- i += 2;
-
- if (type == 0x0002) { /* Message Block */
- unsigned short wastebits;
- unsigned char *msgblock;
- int j = 0, y = 0, z = 0;
-
- msgblock = data+i;
-
- /*
- * 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?"
- *
- */
-
- 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++);
-
- args.finlen = j;
- if (args.finlen > sizeof(args.fingerprint))
- args.finlen = sizeof(args.fingerprint);
- memcpy(args.fingerprint, msgblock, args.finlen);
-
- /* Message string length, including flag words. */
- args.msglen = aimutil_get16(msgblock+j);
- j += 2;
-
- /* Flag words. */
- args.flag1 = aimutil_get16(msgblock+j);
- if (args.flag1 == 0x0002)
- args.icbmflags |= AIM_IMFLAGS_UNICODE;
- else if (args.flag1 == 0x0003)
- args.icbmflags |= AIM_IMFLAGS_ISO_8859_1;
- j += 2;
-
- args.flag2 = aimutil_get16(msgblock+j);
- j += 2;
-
- if ((args.flag1 && (args.flag1 != 0x0002) && (args.flag1 != 0x0003)) || args.flag2)
- faimdprintf(sess, 0, "icbm: **warning: encoding flags are being used! {%04x, %04x}\n", args.flag1, args.flag2);
-
- /* Message string. */
- args.msglen -= 4;
- if (args.icbmflags & AIM_IMFLAGS_UNICODE) {
- args.msg = malloc(args.msglen+2);
- memcpy(args.msg, msgblock+j, args.msglen);
- args.msg[args.msglen] = '\0'; /* wide NULL */
- args.msg[args.msglen+1] = '\0';
- } else {
- args.msg = malloc(args.msglen+1);
- memcpy(args.msg, msgblock+j, args.msglen);
- args.msg[args.msglen] = '\0';
- }
+ unsigned short type, length;
+ aim_rxcallback_t userfunc;
+ int i, ret = 0;
+ struct aim_incomingim_ch1_args args;
- } else if (type == 0x0003) { /* Server Ack Requested */
+ memset(&args, 0, sizeof(args));
- args.icbmflags |= AIM_IMFLAGS_ACK;
-
- } else if (type == 0x0004) { /* Message is Auto Response */
-
- args.icbmflags |= AIM_IMFLAGS_AWAY;
-
- } else if ((type == 0x0008) &&
- (length == 0x000c)) { /* I-HAVE-A-REALLY-PURTY-ICON Flag */
-
- args.iconstamp = aimutil_get32(data+i+8);
- args.icbmflags |= AIM_IMFLAGS_HASICON;
-
- } else if (type == 0x0009) {
-
- args.icbmflags |= AIM_IMFLAGS_BUDDYREQ;
-
- } else {
- fprintf(stderr, "incomingim_ch1: unknown TLV 0x%04x (len %d)\n", type, length);
- }
-
- i += length;
- }
+ /*
+ * 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.
+ */
+ for (i = 0; i < datalen; ) {
+
+ type = aimutil_get16(data+i);
+ i += 2;
+
+ length = aimutil_get16(data+i);
+ i += 2;
+
+ if (type == 0x0002) { /* Message Block */
+ unsigned short wastebits;
+ unsigned char *msgblock;
+ int j = 0, y = 0, z = 0;
+
+ msgblock = data+i;
+
+ /*
+ * 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?"
+ *
+ */
+
+ 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++);
+
+ args.finlen = j;
+ if (args.finlen > sizeof(args.fingerprint))
+ args.finlen = sizeof(args.fingerprint);
+ memcpy(args.fingerprint, msgblock, args.finlen);
+
+ /* Message string length, including flag words. */
+ args.msglen = aimutil_get16(msgblock+j);
+ j += 2;
+
+ /* Flag words. */
+ args.flag1 = aimutil_get16(msgblock+j);
+ if (args.flag1 == 0x0000)
+ ; /* ASCII */
+ else if (args.flag1 == 0x0002)
+ args.icbmflags |= AIM_IMFLAGS_UNICODE;
+ else if (args.flag1 == 0x0003)
+ args.icbmflags |= AIM_IMFLAGS_ISO_8859_1;
+ else if (args.flag1 == 0xffff)
+ ; /* no encoding (yeep!) */
+ j += 2;
+
+ args.flag2 = aimutil_get16(msgblock+j);
+ if (args.flag2 == 0x0000)
+ ; /* standard subencoding? */
+ else if (args.flag2 == 0x000b)
+ args.icbmflags |= AIM_IMFLAGS_SUBENC_MACINTOSH;
+ else if (args.flag2 == 0xffff)
+ ; /* no subencoding */
+ j += 2;
+
+ 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);
+ }
+
+ /* Message string. */
+ args.msglen -= 4;
+ if (args.icbmflags & AIM_IMFLAGS_UNICODE) {
+ args.msg = malloc(args.msglen+2);
+ memcpy(args.msg, msgblock+j, args.msglen);
+ args.msg[args.msglen] = '\0'; /* wide NULL */
+ args.msg[args.msglen+1] = '\0';
+ } else {
+ args.msg = malloc(args.msglen+1);
+ memcpy(args.msg, msgblock+j, args.msglen);
+ args.msg[args.msglen] = '\0';
+ }
+
+ } 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) && (length == 0x000c)) { /* I-HAVE-A-REALLY-PURTY-ICON Flag */
+
+ args.iconstamp = aimutil_get32(data+i+8);
+ args.icbmflags |= AIM_IMFLAGS_HASICON;
+
+ } else if (type == 0x0009) {
+
+ args.icbmflags |= AIM_IMFLAGS_BUDDYREQ;
+
+ } else if (type == 0x0017) {
+
+ args.extdatalen = length;
+ args.extdata = data+i;
+
+ } else {
+ fprintf(stderr, "incomingim_ch1: unknown TLV 0x%04x (len %d)\n", type, length);
+ }
+
+ i += length;
+ }
- if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
- ret = userfunc(sess, rx, channel, userinfo, &args);
+ if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
+ ret = userfunc(sess, rx, channel, userinfo, &args);
- free(args.msg);
+ free(args.msg);
- return ret;
+ return ret;
}
static int incomingim_ch2(struct aim_session_t *sess, aim_module_t *mod, struct command_rx_struct *rx, aim_modsnac_t *snac, unsigned short channel, struct aim_userinfo_s *userinfo, struct aim_tlvlist_t *tlvlist, unsigned char *cookie)
andersk / libfaim.git / blobdiff