diff options
author | Mike Gabriel <mike.gabriel@das-netzwerkteam.de> | 2017-12-13 23:43:41 +0100 |
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committer | Mike Gabriel <mike.gabriel@das-netzwerkteam.de> | 2017-12-13 23:43:41 +0100 |
commit | 7610c0f19e01f2815966b1e333d65c8ab748bd1f (patch) | |
tree | e68569397b9ac48f863c4a7b3c62402dcc86078d /debian/patches/401_nxcomp_bigrequests-and-genericevent-extensions.full+lite.patch | |
parent | c5f3c204236614261cfd8c694d713004847a3b0d (diff) | |
download | nx-libs-7610c0f19e01f2815966b1e333d65c8ab748bd1f.tar.gz nx-libs-7610c0f19e01f2815966b1e333d65c8ab748bd1f.tar.bz2 nx-libs-7610c0f19e01f2815966b1e333d65c8ab748bd1f.zip |
debian/*: Adopt from official Debian package where appropriate.
Diffstat (limited to 'debian/patches/401_nxcomp_bigrequests-and-genericevent-extensions.full+lite.patch')
-rw-r--r-- | debian/patches/401_nxcomp_bigrequests-and-genericevent-extensions.full+lite.patch | 1870 |
1 files changed, 0 insertions, 1870 deletions
diff --git a/debian/patches/401_nxcomp_bigrequests-and-genericevent-extensions.full+lite.patch b/debian/patches/401_nxcomp_bigrequests-and-genericevent-extensions.full+lite.patch deleted file mode 100644 index ab16864df..000000000 --- a/debian/patches/401_nxcomp_bigrequests-and-genericevent-extensions.full+lite.patch +++ /dev/null @@ -1,1870 +0,0 @@ ---- a/nxcomp/ClientChannel.cpp -+++ b/nxcomp/ClientChannel.cpp -@@ -447,6 +447,26 @@ - } - } - -+ // Get other bits of the header, so will not need to refer to them again -+ unsigned char inputDataByte = inputMessage[1]; -+ unsigned int buffer2 = GetUINT(inputMessage + 2, bigEndian_); -+ unsigned int inputDataSize = buffer2 - 1; -+ if (buffer2 == 0) -+ { -+ // BIG-REQUESTS -+ inputMessage += 4; -+ inputLength -= 4; -+ inputDataSize = GetULONG(inputMessage, bigEndian_) - 2; -+ } -+ if (inputLength != (4 * (inputDataSize + 1))) -+ { -+ #ifdef WARNING -+ *logofs << "handleRead: inputLength=" << inputLength -+ << " mismatch inputDataSize=" << inputDataSize -+ << ".\n" << logofs_flush; -+ #endif -+ } -+ - // - // Go to the message's specific encoding. - // -@@ -455,6 +475,11 @@ - { - case X_AllocColor: - { -+ #ifdef WARNING -+ if (inputLength < 14) -+ *logofs << "handleRead: X_AllocColor inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - encodeBuffer.encodeCachedValue(GetULONG(inputMessage + 4, bigEndian_), 29, - clientCache_ -> colormapCache); - const unsigned char *nextSrc = inputMessage + 8; -@@ -476,6 +501,11 @@ - break; - case X_ReparentWindow: - { -+ #ifdef WARNING -+ if (inputLength < 16) -+ *logofs << "handleRead: X_ReparentWindow inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, bigEndian_), - clientCache_ -> windowCache); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 8, bigEndian_), -@@ -486,6 +516,11 @@ - break; - case X_ChangeProperty: - { -+ #ifdef WARNING -+ if (inputLength < 24) -+ *logofs << "handleRead: X_ChangeProperty inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - MessageStore *messageStore = clientStore_ -> - getRequestStore(X_ChangeProperty); - -@@ -501,8 +536,36 @@ - encodeBuffer.encodeCachedValue(format, 8, - clientCache_ -> changePropertyFormatCache); - unsigned int dataLength = GetULONG(inputMessage + 20, bigEndian_); -+ -+ // Self-preserving sanity check (otherwise we crash and dump core): -+ // some clients do this when not getting their beloved BIG-REQUESTS. -+ unsigned int maxLength = 0; -+ if (format == 8) -+ { -+ maxLength = inputLength - 24; -+ } -+ else if (format == 32) -+ { -+ maxLength = (inputLength - 24) >> 2; -+ } -+ else if (format == 16) -+ { -+ maxLength = (inputLength - 24) >> 1; -+ } -+ if (dataLength > maxLength) -+ { -+ #ifdef WARNING -+ *logofs << "handleRead X_ChangeProperty bogus dataLength=" << dataLength -+ << " set to " << maxLength -+ << " when format=" << (int)format -+ << " inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif -+ dataLength = maxLength; -+ } -+ - encodeBuffer.encodeValue(dataLength, 32, 6); -- encodeBuffer.encodeValue(inputMessage[1], 2); -+ encodeBuffer.encodeValue(inputDataByte, 2); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, bigEndian_), - clientCache_ -> windowCache); - encodeBuffer.encodeCachedValue(GetULONG(inputMessage + 8, bigEndian_), 29, -@@ -533,7 +596,7 @@ - nextSrc += 4; - } - } -- else -+ else if (format == 16) - { - for (unsigned int i = 0; i < dataLength; i++) - { -@@ -541,6 +604,13 @@ - nextSrc += 2; - } - } -+ else -+ { -+ #ifdef WARNING -+ *logofs << "ChangeProperty bogus format=" << (int)format -+ << ".\n" << logofs_flush; -+ #endif -+ } - } - break; - case X_SendEvent: -@@ -551,6 +621,11 @@ - // ratio. - // - -+ #ifdef WARNING -+ if (inputLength < 44) -+ *logofs << "handleRead: X_SendEvent inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - MessageStore *messageStore = clientStore_ -> - getRequestStore(X_SendEvent); - -@@ -562,7 +637,7 @@ - break; - } - -- encodeBuffer.encodeBoolValue((unsigned int) inputMessage[1]); -+ encodeBuffer.encodeBoolValue((unsigned int) inputDataByte); - unsigned int window = GetULONG(inputMessage + 4, bigEndian_); - - if (window == 0 || window == 1) -@@ -599,7 +674,12 @@ - break; - case X_ChangeWindowAttributes: - { -- encodeBuffer.encodeValue((inputLength - 12) >> 2, 4); -+ #ifdef WARNING -+ if (inputLength < 16) -+ *logofs << "handleRead: X_ChangeWindowAttributes inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif -+ encodeBuffer.encodeValue(inputDataSize - 2, 4); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, bigEndian_), - clientCache_ -> windowCache); - unsigned int bitmask = GetULONG(inputMessage + 8, bigEndian_); -@@ -621,6 +701,11 @@ - break; - case X_ClearArea: - { -+ #ifdef WARNING -+ if (inputLength < 16) -+ *logofs << "handleRead: X_ClearArea inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -654,7 +739,7 @@ - break; - } - -- encodeBuffer.encodeBoolValue((unsigned int) inputMessage[1]); -+ encodeBuffer.encodeBoolValue((unsigned int) inputDataByte); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, bigEndian_), - clientCache_ -> windowCache); - const unsigned char *nextSrc = inputMessage + 8; -@@ -668,6 +753,11 @@ - break; - case X_CloseFont: - { -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: X_CloseFont inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - unsigned int font = GetULONG(inputMessage + 4, bigEndian_); - encodeBuffer.encodeValue(font - clientCache_ -> lastFont, 29, 5); - clientCache_ -> lastFont = font; -@@ -675,6 +765,11 @@ - break; - case X_ConfigureWindow: - { -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_ConfigureWindow inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - MessageStore *messageStore = clientStore_ -> - getRequestStore(X_ConfigureWindow); - -@@ -708,6 +803,11 @@ - break; - case X_ConvertSelection: - { -+ #ifdef WARNING -+ if (inputLength < 24) -+ *logofs << "handleRead: X_ConvertSelection inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - encodeBuffer.encodeCachedValue(GetULONG(inputMessage + 4, bigEndian_), 29, - clientCache_ -> convertSelectionRequestorCache, 9); - const unsigned char* nextSrc = inputMessage + 8; -@@ -725,6 +825,11 @@ - break; - case X_CopyArea: - { -+ #ifdef WARNING -+ if (inputLength < 28) -+ *logofs << "handleRead: X_CopyArea inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -793,6 +898,11 @@ - break; - case X_CopyGC: - { -+ #ifdef WARNING -+ if (inputLength < 16) -+ *logofs << "handleRead: X_CopyGC inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int s_g_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -814,6 +924,11 @@ - break; - case X_CopyPlane: - { -+ #ifdef WARNING -+ if (inputLength < 32) -+ *logofs << "handleRead: X_CopyPlane inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, - bigEndian_), clientCache_ -> drawableCache); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 8, -@@ -833,6 +948,11 @@ - break; - case X_CreateGC: - { -+ #ifdef WARNING -+ if (inputLength < 16) -+ *logofs << "handleRead: X_CreateGC inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int g_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -917,6 +1037,11 @@ - break; - case X_ChangeGC: - { -+ #ifdef WARNING -+ if (inputLength < 16) -+ *logofs << "handleRead: X_ChangeGC inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int g_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -998,14 +1123,19 @@ - break; - case X_CreatePixmap: - { -+ #ifdef WARNING -+ if (inputLength < 16) -+ *logofs << "handleRead: X_CreatePixmap inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - -- *logofs << "handleRead: X_CreatePixmap depth " << (unsigned) inputMessage[1] -+ *logofs << "handleRead: X_CreatePixmap depth " << (unsigned) inputDataByte - << ", pixmap id " << GetULONG(inputMessage + 4, bigEndian_) - << ", drawable " << GetULONG(inputMessage + 8, bigEndian_) - << ", width " << GetUINT(inputMessage + 12, bigEndian_) - << ", height " << GetUINT(inputMessage + 14, bigEndian_) -- << ", size " << GetUINT(inputMessage + 2, bigEndian_) << 2 -+ << ", length " << inputLength - << ".\n" << logofs_flush; - - unsigned int p_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -1042,6 +1172,11 @@ - break; - case X_CreateWindow: - { -+ #ifdef WARNING -+ if (inputLength < 32) -+ *logofs << "handleRead: X_CreateWindow inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int w_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -1054,7 +1189,7 @@ - #endif - - unsigned bitmask = GetULONG(inputMessage + 28, bigEndian_); -- encodeBuffer.encodeCachedValue((unsigned int) inputMessage[1], 8, -+ encodeBuffer.encodeCachedValue((unsigned int) inputDataByte, 8, - clientCache_ -> depthCache); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 8, bigEndian_), - clientCache_ -> windowCache); -@@ -1098,6 +1233,11 @@ - break; - case X_DeleteProperty: - { -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_DeleteProperty inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, bigEndian_), - clientCache_ -> windowCache); - encodeBuffer.encodeValue(GetULONG(inputMessage + 8, bigEndian_), 29, 9); -@@ -1105,6 +1245,11 @@ - break; - case X_FillPoly: - { -+ #ifdef WARNING -+ if (inputLength < 16) -+ *logofs << "handleRead: X_FillPoly inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -1138,7 +1283,7 @@ - break; - } - -- unsigned int numPoints = ((inputLength - 16) >> 2); -+ unsigned int numPoints = (inputDataSize - 3); - - if (control -> isProtoStep10() == 1) - { -@@ -1209,7 +1354,12 @@ - break; - case X_FreeColors: - { -- unsigned int numPixels = GetUINT(inputMessage + 2, bigEndian_) - 3; -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_FreeColors inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif -+ unsigned int numPixels = inputDataSize - 2; - encodeBuffer.encodeValue(numPixels, 16, 4); - encodeBuffer.encodeCachedValue(GetULONG(inputMessage + 4, bigEndian_), 29, - clientCache_ -> colormapCache); -@@ -1225,12 +1375,22 @@ - break; - case X_FreeCursor: - { -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: X_FreeCursor inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - encodeBuffer.encodeCachedValue(GetULONG(inputMessage + 4, bigEndian_), - 29, clientCache_ -> cursorCache, 9); - } - break; - case X_FreeGC: - { -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: X_FreeGC inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int g_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -1284,6 +1444,11 @@ - break; - case X_FreePixmap: - { -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: X_FreePixmap inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int p_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -1318,6 +1483,11 @@ - break; - case X_GetAtomName: - { -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: X_GetAtomName inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - encodeBuffer.encodeValue(GetULONG(inputMessage + 4, bigEndian_), 29, 9); - - sequenceQueue_.push(clientSequence_, inputOpcode); -@@ -1327,6 +1497,11 @@ - break; - case X_GetGeometry: - { -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: X_GetGeometry inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, bigEndian_), - clientCache_ -> drawableCache); - -@@ -1351,6 +1526,11 @@ - break; - case X_GetKeyboardMapping: - { -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: X_GetKeyboardMapping inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - encodeBuffer.encodeValue((unsigned int) inputMessage[4], 8); - encodeBuffer.encodeValue((unsigned int) inputMessage[5], 8); - -@@ -1361,6 +1541,11 @@ - break; - case X_GetProperty: - { -+ #ifdef WARNING -+ if (inputLength < 24) -+ *logofs << "handleRead: X_GetProperty inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - MessageStore *messageStore = clientStore_ -> - getRequestStore(X_GetProperty); - -@@ -1378,7 +1563,7 @@ - break; - } - -- encodeBuffer.encodeBoolValue((unsigned int) inputMessage[1]); -+ encodeBuffer.encodeBoolValue((unsigned int) inputDataByte); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, bigEndian_), - clientCache_ -> windowCache); - unsigned int property = GetULONG(inputMessage + 8, bigEndian_); -@@ -1394,6 +1579,11 @@ - break; - case X_GetSelectionOwner: - { -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: X_GetSelectionOwner inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - encodeBuffer.encodeCachedValue(GetULONG(inputMessage + 4, bigEndian_), 29, - clientCache_ -> getSelectionOwnerSelectionCache, 9); - -@@ -1404,7 +1594,12 @@ - break; - case X_GrabButton: - { -- encodeBuffer.encodeBoolValue((unsigned int) inputMessage[1]); -+ #ifdef WARNING -+ if (inputLength < 24) -+ *logofs << "handleRead: X_GrabButton inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif -+ encodeBuffer.encodeBoolValue((unsigned int) inputDataByte); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, bigEndian_), - clientCache_ -> windowCache); - encodeBuffer.encodeCachedValue(GetUINT(inputMessage + 8, bigEndian_), 16, -@@ -1423,7 +1618,12 @@ - break; - case X_GrabPointer: - { -- encodeBuffer.encodeBoolValue((unsigned int) inputMessage[1]); -+ #ifdef WARNING -+ if (inputLength < 24) -+ *logofs << "handleRead: X_GrabPointer inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif -+ encodeBuffer.encodeBoolValue((unsigned int) inputDataByte); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, bigEndian_), - clientCache_ -> windowCache); - encodeBuffer.encodeCachedValue(GetUINT(inputMessage + 8, bigEndian_), 16, -@@ -1448,7 +1648,12 @@ - break; - case X_GrabKeyboard: - { -- encodeBuffer.encodeBoolValue((unsigned int) inputMessage[1]); -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_GrabKeyboard inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif -+ encodeBuffer.encodeBoolValue((unsigned int) inputDataByte); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, bigEndian_), - clientCache_ -> windowCache); - unsigned int timestamp = GetULONG(inputMessage + 8, bigEndian_); -@@ -1471,6 +1676,11 @@ - break; - case X_PolyText8: - { -+ #ifdef WARNING -+ if (inputLength < 16) -+ *logofs << "handleRead: X_PolyText8 inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -1555,6 +1765,11 @@ - break; - case X_PolyText16: - { -+ #ifdef WARNING -+ if (inputLength < 16) -+ *logofs << "handleRead: X_PolyText16 inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -1639,6 +1854,11 @@ - break; - case X_ImageText8: - { -+ #ifdef WARNING -+ if (inputLength < 16 + (unsigned int)inputDataByte) -+ *logofs << "handleRead: X_ImageText8 inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -1673,7 +1893,7 @@ - break; - } - -- unsigned int textLength = (unsigned int) inputMessage[1]; -+ unsigned int textLength = (unsigned int) inputDataByte; - encodeBuffer.encodeCachedValue(textLength, 8, - clientCache_ -> imageTextLengthCache, 4); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, -@@ -1706,6 +1926,11 @@ - break; - case X_ImageText16: - { -+ #ifdef WARNING -+ if (inputLength < 16 + (unsigned int)inputDataByte) -+ *logofs << "handleRead: X_ImageText16 inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -1740,7 +1965,7 @@ - break; - } - -- unsigned int textLength = (unsigned int) inputMessage[1]; -+ unsigned int textLength = (unsigned int) inputDataByte; - encodeBuffer.encodeCachedValue(textLength, 8, - clientCache_ -> imageTextLengthCache, 4); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, -@@ -1773,6 +1998,11 @@ - break; - case X_InternAtom: - { -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: X_InternAtom inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - MessageStore *messageStore = clientStore_ -> - getRequestStore(X_InternAtom); - -@@ -1796,8 +2026,18 @@ - } - - unsigned int nameLength = GetUINT(inputMessage + 4, bigEndian_); -+ unsigned int maxLength = inputLength - 8; -+ if (nameLength > maxLength) -+ { -+ #ifdef WARNING -+ *logofs << "handleRead X_InternAtom bogus nameLength=" << nameLength -+ << " set to " << maxLength -+ << ".\n" << logofs_flush; -+ #endif -+ nameLength = maxLength; -+ } - encodeBuffer.encodeValue(nameLength, 16, 6); -- encodeBuffer.encodeBoolValue((unsigned int) inputMessage[1]); -+ encodeBuffer.encodeBoolValue((unsigned int) inputDataByte); - const unsigned char *nextSrc = inputMessage + 8; - - if (control -> isProtoStep7() == 1) -@@ -1827,7 +2067,22 @@ - break; - case X_ListFonts: - { -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: X_ListFonts inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - unsigned int textLength = GetUINT(inputMessage + 6, bigEndian_); -+ unsigned int maxLength = inputLength - 8; -+ if (textLength > maxLength) -+ { -+ #ifdef WARNING -+ *logofs << "handleRead X_ListFonts bogus textLength=" << textLength -+ << " set to " << maxLength -+ << ".\n" << logofs_flush; -+ #endif -+ textLength = maxLength; -+ } - encodeBuffer.encodeValue(textLength, 16, 6); - encodeBuffer.encodeValue(GetUINT(inputMessage + 4, bigEndian_), 16, 6); - const unsigned char* nextSrc = inputMessage + 8; -@@ -1853,7 +2108,22 @@ - case X_LookupColor: - case X_AllocNamedColor: - { -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_AllocNamedColor inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - unsigned int textLength = GetUINT(inputMessage + 8, bigEndian_); -+ unsigned int maxLength = inputLength - 12; -+ if (textLength > maxLength) -+ { -+ #ifdef WARNING -+ *logofs << "handleRead X_AllocNamedColor bogus textLength=" << textLength -+ << " set to " << maxLength -+ << ".\n" << logofs_flush; -+ #endif -+ textLength = maxLength; -+ } - encodeBuffer.encodeValue(textLength, 16, 6); - encodeBuffer.encodeCachedValue(GetULONG(inputMessage + 4, bigEndian_), - 29, clientCache_ -> colormapCache); -@@ -1886,6 +2156,11 @@ - case X_QueryPointer: - case X_QueryTree: - { -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: X_MapWindow...X_QueryTree inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - if (inputOpcode == X_DestroyWindow) -@@ -1923,7 +2198,22 @@ - break; - case X_OpenFont: - { -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_OpenFont inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - unsigned int nameLength = GetUINT(inputMessage + 8, bigEndian_); -+ unsigned int maxLength = inputLength - 12; -+ if (nameLength > maxLength) -+ { -+ #ifdef WARNING -+ *logofs << "handleRead X_InternAtom bogus nameLength=" << nameLength -+ << " set to " << maxLength -+ << ".\n" << logofs_flush; -+ #endif -+ nameLength = maxLength; -+ } - encodeBuffer.encodeValue(nameLength, 16, 7); - unsigned int font = GetULONG(inputMessage + 4, bigEndian_); - encodeBuffer.encodeValue(font - clientCache_ -> lastFont, 29, 5); -@@ -1947,6 +2237,11 @@ - break; - case X_PolyFillRectangle: - { -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_PolyFillRectangle inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -2034,6 +2329,11 @@ - break; - case X_PolyFillArc: - { -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_PolyFillArc inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -2135,6 +2435,11 @@ - break; - case X_PolyArc: - { -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_PolyArc inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -2236,6 +2541,11 @@ - break; - case X_PolyPoint: - { -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_PolyPoint inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -2269,8 +2579,8 @@ - break; - } - -- encodeBuffer.encodeValue(GetUINT(inputMessage + 2, bigEndian_) - 3, 16, 4); -- encodeBuffer.encodeBoolValue((unsigned int) inputMessage[1]); -+ encodeBuffer.encodeValue(inputDataSize - 2, 32, 4); -+ encodeBuffer.encodeBoolValue((unsigned int) inputDataByte); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, bigEndian_), - clientCache_ -> drawableCache); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 8, bigEndian_), -@@ -2303,6 +2613,11 @@ - break; - case X_PolyLine: - { -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_PolyLine inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -2336,8 +2651,8 @@ - break; - } - -- encodeBuffer.encodeValue(GetUINT(inputMessage + 2, bigEndian_) - 3, 16, 4); -- encodeBuffer.encodeBoolValue((unsigned int) inputMessage[1]); -+ encodeBuffer.encodeValue(inputDataSize - 2, 32, 4); -+ encodeBuffer.encodeBoolValue((unsigned int) inputDataByte); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, - bigEndian_), clientCache_ -> drawableCache); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 8, -@@ -2370,8 +2685,12 @@ - break; - case X_PolyRectangle: - { -- encodeBuffer.encodeValue((GetUINT(inputMessage + 2, -- bigEndian_) - 3) >> 1, 16, 3); -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_PolyRectangle inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif -+ encodeBuffer.encodeValue((inputDataSize - 2) >> 1, 32, 3); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, - bigEndian_), clientCache_ -> drawableCache); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 8, -@@ -2391,6 +2710,11 @@ - break; - case X_PolySegment: - { -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_PolySegment inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -2424,8 +2748,7 @@ - break; - } - -- encodeBuffer.encodeValue((GetUINT(inputMessage + 2, -- bigEndian_) - 3) >> 1, 16, 4); -+ encodeBuffer.encodeValue((inputDataSize - 2) >> 1, 32, 4); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, - bigEndian_), clientCache_ -> drawableCache); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 8, -@@ -2491,6 +2814,11 @@ - break; - case X_PutImage: - { -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: X_PutImage inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -2522,7 +2850,12 @@ - break; - case X_QueryBestSize: - { -- encodeBuffer.encodeValue((unsigned int)inputMessage[1], 2); -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_QueryBestSize inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif -+ encodeBuffer.encodeValue((unsigned int)inputDataByte, 2); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, - bigEndian_), clientCache_ -> drawableCache); - encodeBuffer.encodeValue(GetUINT(inputMessage + 8, bigEndian_), 16, 8); -@@ -2535,10 +2868,15 @@ - break; - case X_QueryColors: - { -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: X_QueryColors inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - // Differential encoding. - encodeBuffer.encodeBoolValue(1); - -- unsigned int numColors = ((inputLength - 8) >> 2); -+ unsigned int numColors = (inputDataSize - 1); - encodeBuffer.encodeValue(numColors, 16, 5); - encodeBuffer.encodeCachedValue(GetULONG(inputMessage + 4, bigEndian_), 29, - clientCache_ -> colormapCache); -@@ -2567,15 +2905,20 @@ - break; - case X_QueryExtension: - { -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: X_QueryExtension inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TEST - - char data[256]; - - int length = GetUINT(inputMessage + 4, bigEndian_); - -- if (length > 256) -+ if (length > 255) - { -- length = 256; -+ length = 255; - } - - strncpy(data, (char *) inputMessage + 8, length); -@@ -2588,6 +2931,16 @@ - #endif - - unsigned int nameLength = GetUINT(inputMessage + 4, bigEndian_); -+ unsigned int maxLength = inputLength - 8; -+ if (nameLength > maxLength) -+ { -+ #ifdef WARNING -+ *logofs << "handleRead X_QueryExtension bogus nameLength=" << nameLength -+ << " set to " << maxLength -+ << ".\n" << logofs_flush; -+ #endif -+ nameLength = maxLength; -+ } - encodeBuffer.encodeValue(nameLength, 16, 6); - const unsigned char *nextSrc = inputMessage + 8; - -@@ -2614,6 +2967,11 @@ - break; - case X_QueryFont: - { -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: X_QueryFont inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - unsigned int font = GetULONG(inputMessage + 4, bigEndian_); - encodeBuffer.encodeValue(font - clientCache_ -> lastFont, 29, 5); - clientCache_ -> lastFont = font; -@@ -2625,6 +2983,11 @@ - break; - case X_SetClipRectangles: - { -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_SetClipRectangles inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - MessageStore *messageStore = clientStore_ -> - getRequestStore(X_SetClipRectangles); - -@@ -2636,7 +2999,7 @@ - break; - } - -- unsigned int numRectangles = ((inputLength - 12) >> 3); -+ unsigned int numRectangles = ((inputDataSize - 2) >> 1); - - if (control -> isProtoStep9() == 1) - { -@@ -2647,7 +3010,7 @@ - encodeBuffer.encodeValue(numRectangles, 13, 4); - } - -- encodeBuffer.encodeValue((unsigned int) inputMessage[1], 2); -+ encodeBuffer.encodeValue((unsigned int) inputDataByte, 2); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, bigEndian_), - clientCache_ -> gcCache); - encodeBuffer.encodeCachedValue(GetUINT(inputMessage + 8, bigEndian_), 16, -@@ -2668,7 +3031,22 @@ - break; - case X_SetDashes: - { -+ #ifdef WARNING -+ if (inputLength < 12) -+ *logofs << "handleRead: X_SetDashes inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - unsigned int numDashes = GetUINT(inputMessage + 10, bigEndian_); -+ unsigned int maxLength = inputLength - 12; -+ if (numDashes > maxLength) -+ { -+ #ifdef WARNING -+ *logofs << "handleRead X_SetDashes bogus numDashes=" << numDashes -+ << " set to " << maxLength -+ << ".\n" << logofs_flush; -+ #endif -+ numDashes = maxLength; -+ } - encodeBuffer.encodeCachedValue(numDashes, 16, - clientCache_ -> setDashesLengthCache, 5); - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, bigEndian_), -@@ -2683,6 +3061,11 @@ - break; - case X_SetSelectionOwner: - { -+ #ifdef WARNING -+ if (inputLength < 16) -+ *logofs << "handleRead: X_SetSelectionOwner inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - encodeBuffer.encodeCachedValue(GetULONG(inputMessage + 4, bigEndian_), 29, - clientCache_ -> setSelectionOwnerCache, 9); - encodeBuffer.encodeCachedValue(GetULONG(inputMessage + 8, bigEndian_), 29, -@@ -2693,6 +3076,11 @@ - break; - case X_TranslateCoords: - { -+ #ifdef WARNING -+ if (inputLength < 16) -+ *logofs << "handleRead: X_TranslateCoords inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -2764,6 +3152,11 @@ - break; - case X_GetImage: - { -+ #ifdef WARNING -+ if (inputLength < 20) -+ *logofs << "handleRead: X_GetImage inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -2802,7 +3195,7 @@ - } - - // Format. -- encodeBuffer.encodeValue((unsigned int) inputMessage[1], 2); -+ encodeBuffer.encodeValue((unsigned int) inputDataByte, 2); - // Drawable. - encodeBuffer.encodeXidValue(GetULONG(inputMessage + 4, - bigEndian_), clientCache_ -> drawableCache); -@@ -2869,6 +3262,11 @@ - } - else if (inputOpcode == opcodeStore_ -> putPackedImage) - { -+ #ifdef WARNING -+ if (inputLength < 24) -+ *logofs << "handleRead: putPackedImage inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - #ifdef TARGETS - - unsigned int t_id = GetULONG(inputMessage + 4, bigEndian_); -@@ -3004,7 +3402,7 @@ - << ".\n" << logofs_flush; - #endif - -- encodeBuffer.encodeCachedValue(*(inputMessage + 1), 8, -+ encodeBuffer.encodeCachedValue(inputDataByte, 8, - clientCache_ -> resourceCache); - } - else if (inputOpcode == opcodeStore_ -> freeUnpack) -@@ -3015,7 +3413,7 @@ - << ".\n" << logofs_flush; - #endif - -- encodeBuffer.encodeCachedValue(*(inputMessage + 1), 8, -+ encodeBuffer.encodeCachedValue(inputDataByte, 8, - clientCache_ -> resourceCache); - } - else if (inputOpcode == opcodeStore_ -> getControlParameters) -@@ -3130,6 +3528,11 @@ - // Enable or disable expose events - // coming from the real server. - // -+ #ifdef WARNING -+ if (inputLength < 8) -+ *logofs << "handleRead: setExposeParameters inputLength=" << inputLength -+ << ".\n" << logofs_flush; -+ #endif - - encodeBuffer.encodeBoolValue(*(inputMessage + 4)); - encodeBuffer.encodeBoolValue(*(inputMessage + 5)); -@@ -3198,10 +3601,10 @@ - { - if (hit) - { -- statistics -> addRenderCachedRequest(*(inputMessage + 1)); -+ statistics -> addRenderCachedRequest(inputDataByte); - } - -- statistics -> addRenderRequestBits(*(inputMessage + 1), inputLength << 3, bits); -+ statistics -> addRenderRequestBits(inputDataByte, inputLength << 3, bits); - } - - } // End if (firstRequest_)... else ... -@@ -4548,10 +4951,10 @@ - // - - /* --FIXME: Recover the sequence number if the proxy -+Fixed as below? - FIXME: Recover the sequence number if the proxy - is not connected to an agent. - */ -- if (serverSequence_ > lastSequence_ || -+ if (SequenceNumber_x_gt_y(serverSequence_, lastSequence_) || - control -> SessionMode != session_proxy) - { - #ifdef DEBUG -@@ -4564,7 +4967,7 @@ - lastSequence_ = serverSequence_; - } - #ifdef DEBUG -- else if (serverSequence_ < lastSequence_) -+ else if (SequenceNumber_x_gt_y(lastSequence_, serverSequence_)) - { - // - // Use our last auto-generated sequence. -@@ -5003,6 +5406,12 @@ - break; - default: - { -+ // BEWARE: not only inputOpcode == GenericEvent but also -+ // others not handled above, at least: -+ // GraphicsExpose 13 -+ // MapRequest 20 -+ // ConfigureRequest 23 -+ // and any beyond LASTEvent. - #ifdef TEST - *logofs << "handleWrite: Using generic event compression " - << "for OPCODE#" << (unsigned int) outputOpcode -@@ -5014,11 +5423,51 @@ - - for (unsigned int i = 0; i < 14; i++) - { -- decodeBuffer.decodeCachedValue(value, 16, -- *serverCache_ -> genericEventIntCache[i]); -+ //decodeBuffer.decodeCachedValue(value, 16, -+ // *serverCache_ -> genericEventIntCache[i]); -+ if ( ! (decodeBuffer.decodeCachedValue(value, 16, -+ *serverCache_ -> genericEventIntCache[i])) ) -+ { -+ #ifdef WARNING -+ *logofs << "decodeCachedValue failed for GenEvt:" -+ << " buffer length=" << length -+ << " i=" << i -+ << "\n" << logofs_flush; -+ #endif -+ break; -+ } - - PutUINT(value, outputMessage + i * 2 + 4, bigEndian_); - } -+ // Handle "X Generic Event Extension" -+ // Extra data is not cached... -+ if (outputOpcode == GenericEvent && *(outputMessage+1) != 0 && outputLength == 32) -+ { -+ unsigned int extraOutputLength = (GetULONG(outputMessage + 4, bigEndian_) << 2); -+ if (extraOutputLength > 0 && extraOutputLength < 100*1024*1024) -+ { -+ // Extend buffer for the extra data -+ outputMessage = writeBuffer_.addMessage(extraOutputLength); -+ // Decode data and write into buffer at new position -+ for (unsigned int i = 0; i < (extraOutputLength>>1); i++) -+ { -+ //decodeBuffer.decodeValue(value, 16); -+ if ( ! (decodeBuffer.decodeValue(value, 16)) ) -+ { -+ #ifdef WARNING -+ *logofs << "decodeValue failed for GenEvt:" -+ << " extraOutputLength=" << extraOutputLength -+ << " buffer length=" << length -+ << " i=" << i -+ << "\n" << logofs_flush; -+ #endif -+ break; -+ } -+ PutUINT(value, outputMessage + i * 2, bigEndian_); -+ } -+ } -+ } -+ - } - } // End of switch (outputOpcode)... - -@@ -6892,7 +7341,7 @@ - } - else - { -- if (serverSequence_ > lastSequence_) -+ if (SequenceNumber_x_gt_y(serverSequence_, lastSequence_)) - { - #ifdef DEBUG - *logofs << "handleNotify: Updating last event's sequence " -@@ -6904,7 +7353,7 @@ - lastSequence_ = serverSequence_; - } - #ifdef DEBUG -- else if (serverSequence_ < lastSequence_) -+ else if (SequenceNumber_x_gt_y(lastSequence_, serverSequence_)) - { - // - // Use our last auto-generated sequence. ---- a/nxcomp/ClientReadBuffer.cpp -+++ b/nxcomp/ClientReadBuffer.cpp -@@ -119,15 +119,34 @@ - - dataLength = (GetUINT(start + 2, bigEndian_) << 2); - -- if (dataLength < 4) -+ if (dataLength == 0) // or equivalently (dataLength < 4) - { -- #ifdef TEST -- *logofs << "ClientReadBuffer: WARNING! Assuming length 4 " -- << "for suspicious message of length " << dataLength -- << ".\n" << logofs_flush; -- #endif -+ // BIG-REQUESTS extension -+ if (size < 8) -+ { -+ remaining_ = 8 - size; -+ return 0; -+ } - -- dataLength = 4; -+ dataLength = (GetULONG(start + 4, bigEndian_) << 2); -+ -+// See WRITE_BUFFER_OVERFLOW_SIZE elsewhere -+// and also ENCODE_BUFFER_OVERFLOW_SIZE DECODE_BUFFER_OVERFLOW_SIZE. -+ if (dataLength < 8 || dataLength > 100*1024*1024) -+ { -+ #ifdef WARNING -+ *logofs << "BIG-REQUESTS with unacceptable dataLength=" -+ << dataLength << ", now set to 8.\n" << logofs_flush; -+ #endif -+ dataLength = 8; -+ } -+ else if (dataLength < 4*64*1024) -+ { -+ #ifdef WARNING -+ *logofs << "BIG-REQUESTS with silly dataLength=" -+ << dataLength << ".\n" << logofs_flush; -+ #endif -+ } - } - } - ---- a/nxcomp/DecodeBuffer.cpp -+++ b/nxcomp/DecodeBuffer.cpp -@@ -78,34 +78,45 @@ - { - if (!endOkay) - { -- #ifdef PANIC -- *logofs << "DecodeBuffer: PANIC! Assertion failed. Error [A] " -- << "in decodeValue() nextSrc_ = " << (nextSrc_ - buffer_) -- << " end_ = " << (end_ - buffer_) << ".\n" -- << logofs_flush; -+ #ifdef WARNING -+ *logofs << "DecodeBuffer: Error [A] in decodeValue(), returning 0:" -+ << " nextSrc_ = " << (nextSrc_ - buffer_) -+ << " end_ = " << (end_ - buffer_) -+ << ".\n" << logofs_flush; - #endif -- -- // -- // Label "context" is just used to identify -- // the routine which detected the problem in -- // present source file. -- // -- -- cerr << "Error" << ": Failure decoding data in context [A].\n"; -- -- HandleAbort(); -+ value = 0; -+ return 0; -+ //#ifdef PANIC -+ //*logofs << "DecodeBuffer: PANIC! Assertion failed. Error [A] " -+ // << "in decodeValue() nextSrc_ = " << (nextSrc_ - buffer_) -+ // << " end_ = " << (end_ - buffer_) << ".\n" -+ // << logofs_flush; -+ //#endif -+ //// -+ //// Label "context" is just used to identify -+ //// the routine which detected the problem in -+ //// present source file. -+ //// -+ //cerr << "Error" << ": Failure decoding data in context [A].\n"; -+ //HandleAbort(); - } - -- #ifdef PANIC -- *logofs << "DecodeBuffer: PANIC! Assertion failed. Error [B] " -- << "in decodeValue() nextSrc_ = " << (nextSrc_ - buffer_) -- << " end_ = " << (end_ - buffer_) << ".\n" -- << logofs_flush; -+ #ifdef WARNING -+ *logofs << "DecodeBuffer: Error [B] in decodeValue(), returning 0:" -+ << " nextSrc_ = " << (nextSrc_ - buffer_) -+ << " end_ = " << (end_ - buffer_) -+ << ".\n" << logofs_flush; - #endif -- -- cerr << "Error" << ": Failure decoding data in context [B].\n"; -- -- HandleAbort(); -+ value = 0; -+ return 0; -+ //#ifdef PANIC -+ //*logofs << "DecodeBuffer: PANIC! Assertion failed. Error [B] " -+ // << "in decodeValue() nextSrc_ = " << (nextSrc_ - buffer_) -+ // << " end_ = " << (end_ - buffer_) << ".\n" -+ // << logofs_flush; -+ //#endif -+ //cerr << "Error" << ": Failure decoding data in context [B].\n"; -+ //HandleAbort(); - } - - lastBit = (nextSrcChar & srcMask_); -@@ -134,28 +145,40 @@ - { - if (!endOkay) - { -- #ifdef PANIC -- *logofs << "DecodeBuffer: PANIC! Assertion failed. Error [C] " -- << "in decodeValue() nextSrc_ = " << (nextSrc_ - buffer_) -- << " end_ = " << (end_ - buffer_) << ".\n" -- << logofs_flush; -+ #ifdef WARNING -+ *logofs << "DecodeBuffer: Error [C] in decodeValue(), returning 0:" -+ << " nextSrc_ = " << (nextSrc_ - buffer_) -+ << " end_ = " << (end_ - buffer_) -+ << ".\n" << logofs_flush; - #endif -- -- cerr << "Error" << ": Failure decoding data in context [C].\n"; -- -- HandleAbort(); -+ value = 0; -+ return 0; -+ //#ifdef PANIC -+ //*logofs << "DecodeBuffer: PANIC! Assertion failed. Error [C] " -+ // << "in decodeValue() nextSrc_ = " << (nextSrc_ - buffer_) -+ // << " end_ = " << (end_ - buffer_) << ".\n" -+ // << logofs_flush; -+ //#endif -+ //cerr << "Error" << ": Failure decoding data in context [C].\n"; -+ //HandleAbort(); - } - -- #ifdef PANIC -- *logofs << "DecodeBuffer: PANIC! Assertion failed. Error [D] " -- << "in decodeValue() nextSrc_ = " << (nextSrc_ - buffer_) -- << " end_ = " << (end_ - buffer_) << ".\n" -- << logofs_flush; -+ #ifdef WARNING -+ *logofs << "DecodeBuffer: Error [D] in decodeValue(), returning 0:" -+ << " nextSrc_ = " << (nextSrc_ - buffer_) -+ << " end_ = " << (end_ - buffer_) -+ << ".\n" << logofs_flush; - #endif -- -- cerr << "Error" << ": Failure decoding data in context [D].\n"; -- -- HandleAbort(); -+ value = 0; -+ return 0; -+ //#ifdef PANIC -+ //*logofs << "DecodeBuffer: PANIC! Assertion failed. Error [D] " -+ // << "in decodeValue() nextSrc_ = " << (nextSrc_ - buffer_) -+ // << " end_ = " << (end_ - buffer_) << ".\n" -+ // << logofs_flush; -+ //#endif -+ //cerr << "Error" << ": Failure decoding data in context [D].\n"; -+ //HandleAbort(); - } - - unsigned char moreData = (nextSrcChar & srcMask_); -@@ -212,16 +235,24 @@ - - if (nextSrc_ >= end_) - { -- #ifdef PANIC -- *logofs << "DecodeBuffer: PANIC! Assertion failed. Error [E] " -- << "in decodeValue() nextSrc_ = " << (nextSrc_ - buffer_) -- << " end_ = " << (end_ - buffer_) << ".\n" -- << logofs_flush; -+ #ifdef WARNING -+ *logofs << "DecodeBuffer: Error [E] in decodeCachedValue(), returning 0:" -+ << " nextSrc_ = " << (nextSrc_ - buffer_) -+ << " end_ = " << (end_ - buffer_) -+ << ".\n" << logofs_flush; - #endif -- -- cerr << "Error" << ": Failure decoding data in context [E].\n"; -- -- HandleAbort(); -+ // Failed: return value 0 -+ value = 0; -+ // Failed: return 0, though our callers do not check that... -+ return 0; -+ //#ifdef PANIC -+ //*logofs << "DecodeBuffer: PANIC! Assertion failed. Error [E] " -+ // << "in decodeValue() nextSrc_ = " << (nextSrc_ - buffer_) -+ // << " end_ = " << (end_ - buffer_) << ".\n" -+ // << logofs_flush; -+ //#endif -+ //cerr << "Error" << ": Failure decoding data in context [E].\n"; -+ //HandleAbort(); - } - - unsigned int index = 0; -@@ -237,30 +268,33 @@ - nextSrc_++; - if (nextSrc_ >= end_) - { -- if (!endOkay) -- { -- #ifdef PANIC -- *logofs << "DecodeBuffer: PANIC! Assertion failed. Error [F] " -- << "in decodeCachedValue() nextSrc_ = " -- << (nextSrc_ - buffer_) << " end_ = " -- << (end_ - buffer_) << ".\n" << logofs_flush; -- #endif -- -- cerr << "Error" << ": Failure decoding data in context [F].\n"; -- -- HandleAbort(); -- } -- -- #ifdef PANIC -- *logofs << "DecodeBuffer: PANIC! Assertion failed. Error [G] " -- << "in decodeValue() nextSrc_ = " << (nextSrc_ - buffer_) -- << " end_ = " << (end_ - buffer_) << ".\n" -- << logofs_flush; -+ #ifdef WARNING -+ *logofs << "DecodeBuffer: Error [G] in decodeCachedValue(), returning 0:" -+ << " nextSrc_ = " << (nextSrc_ - buffer_) -+ << " end_ = " << (end_ - buffer_) -+ << ".\n" << logofs_flush; - #endif -- -- cerr << "Error" << ": Failure decoding data in context [G].\n"; -- -- HandleAbort(); -+ value = 0; -+ return 0; -+ //if (!endOkay) -+ //{ -+ // #ifdef PANIC -+ // *logofs << "DecodeBuffer: PANIC! Assertion failed. Error [F] " -+ // << "in decodeCachedValue() nextSrc_ = " -+ // << (nextSrc_ - buffer_) << " end_ = " -+ // << (end_ - buffer_) << ".\n" << logofs_flush; -+ // #endif -+ // cerr << "Error" << ": Failure decoding data in context [F].\n"; -+ // HandleAbort(); -+ //} -+ //#ifdef PANIC -+ //*logofs << "DecodeBuffer: PANIC! Assertion failed. Error [G] " -+ // << "in decodeValue() nextSrc_ = " << (nextSrc_ - buffer_) -+ // << " end_ = " << (end_ - buffer_) << ".\n" -+ // << logofs_flush; -+ //#endif -+ //cerr << "Error" << ": Failure decoding data in context [G].\n"; -+ //HandleAbort(); - } - - nextSrcChar = *nextSrc_; -@@ -288,15 +322,20 @@ - return 1; - } - -- #ifdef PANIC -- *logofs << "DecodeBuffer: PANIC! Assertion failed. Error [H] " -- << "in decodeCacheValue() with no value found.\n" -- << logofs_flush; -+ #ifdef WARNING -+ *logofs << "DecodeBuffer: Error [H] in decodeCachedValue(), returning 0:" -+ << " no value found" -+ << ".\n" << logofs_flush; - #endif -- -- cerr << "Error" << ": Failure decoding data in context [H].\n"; -- -- HandleAbort(); -+ value = 0; -+ return 0; -+ //#ifdef PANIC -+ //*logofs << "DecodeBuffer: PANIC! Assertion failed. Error [H] " -+ // << "in decodeCacheValue() with no value found.\n" -+ // << logofs_flush; -+ //#endif -+ //cerr << "Error" << ": Failure decoding data in context [H].\n"; -+ //HandleAbort(); - } - else - { -@@ -323,15 +362,20 @@ - return 1; - } - -- #ifdef PANIC -- *logofs << "DecodeBuffer: PANIC! Assertion failed. Error [H] " -- << "in decodeCacheValue() with no value found.\n" -- << logofs_flush; -+ #ifdef WARNING -+ *logofs << "DecodeBuffer: Error [F] in decodeCachedValue(), returning 0:" -+ << " no value found" -+ << " .\n" << logofs_flush; - #endif -- -- cerr << "Error" << ": Failure decoding data in context [H].\n"; -- -- HandleAbort(); -+ value = 0; -+ return 0; -+ //#ifdef PANIC -+ //*logofs << "DecodeBuffer: PANIC! Assertion failed. Error [H] " -+ // << "in decodeCacheValue() with no value found.\n" -+ // << logofs_flush; -+ //#endif -+ //cerr << "Error" << ": Failure decoding data in context [H].\n"; -+ //HandleAbort(); - } - } - } -@@ -344,16 +388,22 @@ - - if (index > cache.getSize()) - { -- #ifdef PANIC -- *logofs << "DecodeBuffer: PANIC! Assertion failed. Error [I] " -- << "in decodeCachedValue() index = " << index -- << " cache size = " << cache.getSize() << ".\n" -- << logofs_flush; -+ #ifdef WARNING -+ *logofs << "DecodeBuffer: Error [I] in decodeCachedValue(), returning 0:" -+ << " index = " << index -+ << " cache size = " << cache.getSize() -+ << ".\n" << logofs_flush; - #endif -- -- cerr << "Error" << ": Failure decoding data in context [I].\n"; -- -- HandleAbort(); -+ value = 0; -+ return 0; -+ //#ifdef PANIC -+ //*logofs << "DecodeBuffer: PANIC! Assertion failed. Error [I] " -+ // << "in decodeCachedValue() index = " << index -+ // << " cache size = " << cache.getSize() << ".\n" -+ // << logofs_flush; -+ //#endif -+ //cerr << "Error" << ": Failure decoding data in context [I].\n"; -+ //HandleAbort(); - } - - value = cache.get(index); -@@ -401,16 +451,22 @@ - { - if (!endOkay) - { -- #ifdef PANIC -- *logofs << "DecodeBuffer: PANIC! Assertion failed. Error [K] " -- << "in decodeCachedValue() nextSrc_ " -- << (nextSrc_ - buffer_) << " end_ " << (end_ - buffer_) -+ #ifdef WARNING -+ *logofs << "DecodeBuffer: Error [K] in decodeCachedValue(), returning 0:" -+ << " nextSrc_ " << (nextSrc_ - buffer_) -+ << " end_ " << (end_ - buffer_) - << ".\n" << logofs_flush; - #endif -- -- cerr << "Error" << ": Failure decoding data in context [K].\n"; -- -- HandleAbort(); -+ value = 0; -+ return 0; -+ //#ifdef PANIC -+ //*logofs << "DecodeBuffer: PANIC! Assertion failed. Error [K] " -+ // << "in decodeCachedValue() nextSrc_ " -+ // << (nextSrc_ - buffer_) << " end_ " << (end_ - buffer_) -+ // << ".\n" << logofs_flush; -+ //#endif -+ //cerr << "Error" << ": Failure decoding data in context [K].\n"; -+ //HandleAbort(); - } - - #ifdef TEST -@@ -446,15 +502,20 @@ - } - else - { -- #ifdef PANIC -- *logofs << "DecodeBuffer: PANIC! Assertion failed. Error [M] " -- << "in decodeValue() with index = 2.\n" -- << logofs_flush; -+ #ifdef WARNING -+ *logofs << "DecodeBuffer: Error [M] in decodeCachedValue(), returning 0:" -+ << "with index = 2" -+ << ".\n" << logofs_flush; - #endif -- -- cerr << "Error" << ": Failure decoding data in context [M].\n"; -- -- HandleAbort(); -+ value = 0; -+ return 0; -+ //#ifdef PANIC -+ //*logofs << "DecodeBuffer: PANIC! Assertion failed. Error [M] " -+ // << "in decodeValue() with index = 2.\n" -+ // << logofs_flush; -+ //#endif -+ //cerr << "Error" << ": Failure decoding data in context [M].\n"; -+ //HandleAbort(); - } - } - else -@@ -466,16 +527,22 @@ - - if (index > cache.getSize()) - { -- #ifdef PANIC -- *logofs << "DecodeBuffer: PANIC! Assertion failed. Error [N] " -- << "in decodeCachedValue() " << "index = " << index -- << " cache size = " << cache.getSize() << ".\n" -- << logofs_flush; -+ #ifdef WARNING -+ *logofs << "DecodeBuffer: Error [N] in decodeCachedValue(), returning 0:" -+ << " index = " << index -+ << " cache size = " << cache.getSize() -+ << ".\n" << logofs_flush; - #endif -- -- cerr << "Error" << ": Failure decoding data in context [N].\n"; -- -- HandleAbort(); -+ value = 0; -+ return 0; -+ //#ifdef PANIC -+ //*logofs << "DecodeBuffer: PANIC! Assertion failed. Error [N] " -+ // << "in decodeCachedValue() " << "index = " << index -+ // << " cache size = " << cache.getSize() << ".\n" -+ // << logofs_flush; -+ //#endif -+ //cerr << "Error" << ": Failure decoding data in context [N].\n"; -+ //HandleAbort(); - } - - value = cache.get(index); -@@ -538,16 +605,22 @@ - } - else if (end_ - nextSrc_ < (int) numBytes) - { -- #ifdef PANIC -- *logofs << "DecodeBuffer: PANIC! Assertion failed. Error [P] " -- << "in decodeMemory() " << "with length " << numBytes -+ #ifdef WARNING -+ *logofs << "DecodeBuffer: Error [P] in decodeMemory(), returning NULL:" -+ << " with length " << numBytes - << " and " << (end_ - nextSrc_) -- << " bytes remaining.\n" << logofs_flush; -+ << " bytes remaining" -+ << ".\n" << logofs_flush; - #endif -- -- cerr << "Error" << ": Failure decoding data in context [P].\n"; -- -- HandleAbort(); -+ return NULL; -+ //#ifdef PANIC -+ //*logofs << "DecodeBuffer: PANIC! Assertion failed. Error [P] " -+ // << "in decodeMemory() " << "with length " << numBytes -+ // << " and " << (end_ - nextSrc_) -+ // << " bytes remaining.\n" << logofs_flush; -+ //#endif -+ //cerr << "Error" << ": Failure decoding data in context [P].\n"; -+ //HandleAbort(); - } - - nextSrc_ += numBytes; ---- a/nxcomp/DecodeBuffer.h -+++ b/nxcomp/DecodeBuffer.h -@@ -30,7 +30,8 @@ - #include "ActionCacheCompat.h" - #include "PositionCacheCompat.h" - --#define DECODE_BUFFER_OVERFLOW_SIZE 4194304 -+// See WriteBuffer.h and EncodeBuffer.h -+#define DECODE_BUFFER_OVERFLOW_SIZE 104857600 - - #define DECODE_BUFFER_POSTFIX_SIZE 1 - ---- a/nxcomp/EncodeBuffer.h -+++ b/nxcomp/EncodeBuffer.h -@@ -33,10 +33,10 @@ - // - // This should match the maximum size of - // a single message added to write buffer --// (see WriteBuffer.h). -+// (see WriteBuffer.h and DecodeBuffer.h). - // - --#define ENCODE_BUFFER_OVERFLOW_SIZE 4194304 -+#define ENCODE_BUFFER_OVERFLOW_SIZE 104857600 - - // - // Adjust for the control messages and the ---- a/nxcomp/SequenceQueue.h -+++ b/nxcomp/SequenceQueue.h -@@ -18,6 +18,22 @@ - #ifndef SequenceQueue_H - #define SequenceQueue_H - -+inline int SequenceNumber_x_gt_y(unsigned int x, unsigned int y) -+{ -+ // For two sequence numbers x and y, determine whether (x > y). -+ // Sequence numbers are the trailing 16 bits of a bigger number: -+ // need to handle wraparound, e.g. 0 is 65536, just after 65535. -+ if (x != (x & 0x00ffff)) return 0; -+ if (y != (y & 0x00ffff)) return 0; -+ // Closeness when comparison makes sense: arbitrarily set at 16*1024 -+ if ((x > y) && ((x-y) < 16*1024)) return 1; -+ // Wrapped value -+ unsigned int w = x + 64*1024; -+ // We know that w>y but test left for symmetry -+ if ((w > y) && ((w-y) < 16*1024)) return 1; -+ return 0; -+} -+ - // - // List of outstanding request messages which - // are waiting for a reply. This class is used ---- a/nxcomp/ServerChannel.cpp -+++ b/nxcomp/ServerChannel.cpp -@@ -104,7 +104,8 @@ - // - - #define HIDE_MIT_SHM_EXTENSION --#define HIDE_BIG_REQUESTS_EXTENSION -+// HIDE_BIG_REQUESTS_EXTENSION : No good to hide, some clients may send crap instead... -+#undef HIDE_BIG_REQUESTS_EXTENSION - #define HIDE_XFree86_Bigfont_EXTENSION - #undef HIDE_SHAPE_EXTENSION - #undef HIDE_XKEYBOARD_EXTENSION -@@ -1412,6 +1413,9 @@ - - unsigned int inputSequence = GetUINT(inputMessage + 2, bigEndian_); - -+ // Sometimes we get inputSequence=0 or =256 when inputOpcode=11=X_UnmapSubwindows -+ // Seems weird... but is "normal" and is to be accepted. -+ - // - // Check if this is an event which we can discard. - // -@@ -1905,6 +1909,12 @@ - break; - default: - { -+ // BEWARE: not only inputOpcode == GenericEvent but also -+ // others not handled above, at least: -+ // GraphicsExpose 13 -+ // MapRequest 20 -+ // ConfigureRequest 23 -+ // and any beyond LASTEvent. - #ifdef TEST - *logofs << "handleRead: Using generic event compression " - << "for OPCODE#" << (unsigned int) inputOpcode -@@ -1919,6 +1929,16 @@ - encodeBuffer.encodeCachedValue(GetUINT(inputMessage + i * 2 + 4, bigEndian_), - 16, *serverCache_ -> genericEventIntCache[i]); - } -+ // Handle "X Generic Event Extension" -+ // Cannot cache extra data... -+// FIXME: BUG ALERT: is it OK to have the first 32 bytes cached, but not the rest? -+ if (inputOpcode == GenericEvent && inputLength > 32) -+ { -+ for (unsigned int i = 14; i < ((inputLength-4)>>1); i++) -+ { -+ encodeBuffer.encodeValue(GetUINT(inputMessage + i * 2 + 4, bigEndian_), 16); -+ } -+ } - } - - } // switch (inputOpcode)... -@@ -3756,7 +3776,7 @@ - } - - unsigned int numPoints; -- decodeBuffer.decodeValue(numPoints, 16, 4); -+ decodeBuffer.decodeValue(numPoints, 32, 4); - outputLength = (numPoints << 2) + 12; - outputMessage = writeBuffer_.addMessage(outputLength); - unsigned int relativeCoordMode; -@@ -3802,7 +3822,7 @@ - } - - unsigned int numPoints; -- decodeBuffer.decodeValue(numPoints, 16, 4); -+ decodeBuffer.decodeValue(numPoints, 32, 4); - outputLength = (numPoints << 2) + 12; - outputMessage = writeBuffer_.addMessage(outputLength); - unsigned int relativeCoordMode; -@@ -3839,7 +3859,7 @@ - case X_PolyRectangle: - { - unsigned int numRectangles; -- decodeBuffer.decodeValue(numRectangles, 16, 3); -+ decodeBuffer.decodeValue(numRectangles, 32, 3); - outputLength = (numRectangles << 3) + 12; - outputMessage = writeBuffer_.addMessage(outputLength); - decodeBuffer.decodeXidValue(value, clientCache_ -> drawableCache); -@@ -3869,7 +3889,7 @@ - } - - unsigned int numSegments; -- decodeBuffer.decodeValue(numSegments, 16, 4); -+ decodeBuffer.decodeValue(numSegments, 32, 4); - outputLength = (numSegments << 3) + 12; - outputMessage = writeBuffer_.addMessage(outputLength); - decodeBuffer.decodeXidValue(value, clientCache_ -> drawableCache); -@@ -4590,7 +4610,29 @@ - - *outputMessage = (unsigned char) outputOpcode; - -- PutUINT(outputLength >> 2, outputMessage + 2, bigEndian_); -+ if (outputLength < 4*64*1024) -+ PutUINT(outputLength >> 2, outputMessage + 2, bigEndian_); -+ else -+ { -+ // Handle BIG-REQUESTS -+ PutUINT(0, outputMessage + 2, bigEndian_); -+// FIXME: BUG ALERT: following write may not work well, -+// particularly with un-flushed messages. -+if (outputMessage != writeBuffer_.getData()) -+{ -+*logofs << "PSz BUG handleWrite BIG-REQUESTS:" -+ << " have " << (unsigned int)(outputMessage - writeBuffer_.getData()) -+ << " bytes in buffer" -+ << ", write immediate of 4-byte header will not work well" -+ << "\n" << logofs_flush; -+} -+// But, it works well enough in my testing... -+ // Write first four bytes -+ if (transport_ -> write(write_immediate, outputMessage, 4) < 0) -+ return -1; -+ // Replace with new 4-byte length -+ PutULONG(1 + (outputLength >> 2), outputMessage, bigEndian_); -+ } - - #if defined(TEST) || defined(OPCODES) - *logofs << "handleWrite: Handled request OPCODE#" -@@ -5912,7 +5954,7 @@ - unsigned char opcode = *lastMotion_; - unsigned int size = 32; - -- if (GetUINT(buffer + 2, bigEndian_) < serverSequence_) -+ if (SequenceNumber_x_gt_y(serverSequence_, GetUINT(buffer + 2, bigEndian_))) - { - PutUINT(serverSequence_, (unsigned char *) buffer + 2, bigEndian_); - } ---- a/nxcomp/ServerReadBuffer.cpp -+++ b/nxcomp/ServerReadBuffer.cpp -@@ -108,14 +108,21 @@ - { - dataLength = 32 + (GetULONG(start + 4, bigEndian_) << 2); - } -+ else if (*start == GenericEvent && *(start+1) != 0) -+ { -+ // X Generic Event Extension -+ dataLength = 32 + (GetULONG(start + 4, bigEndian_) << 2); -+ } - else - { - dataLength = 32; - } - -- if (dataLength < 32) -+// See WRITE_BUFFER_OVERFLOW_SIZE elsewhere -+// and also ENCODE_BUFFER_OVERFLOW_SIZE DECODE_BUFFER_OVERFLOW_SIZE. -+ if (dataLength < 32 || dataLength > 100*1024*1024) - { -- #ifdef TEST -+ #ifdef WARNING - *logofs << "ServerReadBuffer: WARNING! Assuming length 32 " - << "for suspicious message of length " << dataLength - << ".\n" << logofs_flush; ---- a/nxcomp/WriteBuffer.h -+++ b/nxcomp/WriteBuffer.h -@@ -32,8 +32,14 @@ - // This is likely to be a reply to a X_ListFonts where - // user has a large amount of installed fonts. - // -+// Used also for messages sent, and should accommodate any BIG-REQUESTS. -+// Value was 4MB = 4194304, changed to 100MB = 104857600. -+// See also sanity check limits (set same, to 100*1024*1024) in -+// ClientReadBuffer.cpp ServerReadBuffer.cpp and ClientChannel.cpp, and -+// ENCODE_BUFFER_OVERFLOW_SIZE DECODE_BUFFER_OVERFLOW_SIZE elsewhere. -+// - --#define WRITE_BUFFER_OVERFLOW_SIZE 4194304 -+#define WRITE_BUFFER_OVERFLOW_SIZE 104857600 - - class WriteBuffer - { |