internal static int GetChunkSize(IReadChunkBytes Source, out int chunkSize) { int num2 = 0; int nextByte = Source.NextByte; int num = 0; switch (nextByte) { case 10: case 13: num++; nextByte = Source.NextByte; break; } while (nextByte != -1) { if ((nextByte >= 0x30) && (nextByte <= 0x39)) { nextByte -= 0x30; } else { if ((nextByte >= 0x61) && (nextByte <= 0x66)) { nextByte -= 0x61; } else if ((nextByte >= 0x41) && (nextByte <= 70)) { nextByte -= 0x41; } else { Source.NextByte = nextByte; chunkSize = num2; return(num); } nextByte += 10; } num2 *= 0x10; num2 += nextByte; num++; nextByte = Source.NextByte; } chunkSize = num2; return(-1); }
internal static int GetChunkSize(IReadChunkBytes Source, out int chunkSize) { int num2 = 0; int nextByte = Source.NextByte; int num = 0; switch (nextByte) { case 10: case 13: num++; nextByte = Source.NextByte; break; } while (nextByte != -1) { if ((nextByte >= 0x30) && (nextByte <= 0x39)) { nextByte -= 0x30; } else { if ((nextByte >= 0x61) && (nextByte <= 0x66)) { nextByte -= 0x61; } else if ((nextByte >= 0x41) && (nextByte <= 70)) { nextByte -= 0x41; } else { Source.NextByte = nextByte; chunkSize = num2; return num; } nextByte += 10; } num2 *= 0x10; num2 += nextByte; num++; nextByte = Source.NextByte; } chunkSize = num2; return -1; }
SkipPastCRLF(IReadChunkBytes Source) { int BytesRead; int Current; bool Escape; bool InQS; bool HaveCR; bool HaveLF; BytesRead = 0; Escape = false; InQS = false; HaveCR = false; HaveLF = false; GlobalLog.Enter("SkipPastCRLF"); // Loop through the buffer, looking at each byte. We have a // pseudo state machine going here, and the action we take // with each byte depends on the state. Current = Source.NextByte; BytesRead++; while (Current != -1) { // If we saw a CR last time, it must be followed by an unescaped // LF, otherwise it's an error. If it is followed by a LF, and // we're not in a quoted string, then we've found our termination. // If we are in a quoted string, this could be the start of a LWS // production. Remember that, and next time through we'll // check to make sure that this is an LWS production. if (HaveCR) { if (Current != '\n') { // CR w/o a trailing LF is an error. GlobalLog.Leave("SkipPastCRLF", 0); return 0; } else { if (Escape) { // We have an CR, but they're trying to escape the // LF. This is an error. GlobalLog.Leave("SkipPastCRLF", 0); return 0; } // If we're not in a quoted string, we're done. if (!InQS) { // We've found the terminating CRLF pair. GlobalLog.Leave("SkipPastCRLF", 0); return BytesRead; } else { // We're in a quoted string, so set HaveLF // so we remember to check for a LWS production next // time. HaveLF = true; // We've proceessed this byte, set Escape so we don't // do it again. Escape = true; } } // We're past the CR now, don't remember it any more. HaveCR = false; } else { // If HaveLF is set, we must be in a quoted string and have // seen a CRLF pair. Make sure this character is a space or // tab. if (HaveLF) { // We have a LF. For this to be valid, we have to have a // space or tab be the next character. if (Current != ' ' && Current != '\t') { // Not a continuation, so return an error. GlobalLog.Leave("SkipPastCRLF", 0); return 0; } Escape = true; // Don't process this byte again. HaveLF = false; } } // If we're escaping, just skip the next character. if (!Escape) { switch (Current) { case '"': if (InQS) { InQS = false; } else { InQS = true; } break; case '\\': if (InQS) { Escape = true; } break; case '\r': HaveCR = true; break; case '\n': // If we get here, we have a LF without a preceding CR. // This is an error. GlobalLog.Leave("SkipPastCRLF", 0); return 0; default: break; } } else { // We're escaping, do nothing but rest the Escape flag. Escape = false; } Current = Source.NextByte; BytesRead++; } // If we get here, we never saw the terminating CRLF, so return -1. GlobalLog.Leave("SkipPastCRLF", -1); return -1; }
GetChunkSize(IReadChunkBytes Source, out int chunkSize) { int BytesRead; int Size; int Current; GlobalLog.Enter("GetChunkSize"); Size = 0; // // Loop while we have data. If we run out of data and exit the loop // at the bottom, then we've run out of data and haven't found the // length. Current = Source.NextByte; BytesRead = 0; if (Current == 10 || Current == 13) { GlobalLog.Print(" Got Char: " + Current.ToString("X")); BytesRead++; Current = Source.NextByte; } while (Current != -1) { // Get the next byte, and decode it. if (Current >= '0' && Current <= '9') { // Normalize it to 0 based. Current -= '0'; } else { // If we're here, this might be a hex digit. // If it is, normalize it to 10 based. if (Current >= 'a' && Current <= 'f') { Current -= 'a'; } else { if (Current >= 'A' && Current <= 'F') { Current -= 'A'; } else { // Done with the decoding. If we haven't actually // decoded a digit yet, we'll end up returning // 0, which will signal the error. // Push back the byte we read and didn't use. Source.NextByte = Current; chunkSize = Size; // Return how many bytes we took. GlobalLog.Print("Chunk Size = " + Size.ToString()); GlobalLog.Leave("GetChunkSize", BytesRead); return BytesRead; } } // If we get here we've had an A-F digit, add 10 // to it to normalize it. Current += 10; } // Update the size and our state. Size *= 16; Size += Current; BytesRead++; Current = Source.NextByte; } chunkSize = Size; GlobalLog.Print("*Chunk Size* = " + Size.ToString()); GlobalLog.Leave("GetChunkSize", -1); return -1; }
internal static int SkipPastCRLF(IReadChunkBytes Source) { int num = 0; bool flag = false; bool flag2 = false; bool flag3 = false; bool flag4 = false; int nextByte = Source.NextByte; num++; while (nextByte != -1) { if (flag3) { if (nextByte != 10) { return(0); } if (flag) { return(0); } if (!flag2) { return(num); } flag4 = true; flag = true; flag3 = false; } else if (flag4) { if ((nextByte != 0x20) && (nextByte != 9)) { return(0); } flag = true; flag4 = false; } if (!flag) { switch (nextByte) { case 0x22: if (flag2) { flag2 = false; } else { flag2 = true; } break; case 0x5c: if (flag2) { flag = true; } break; case 10: return(0); case 13: flag3 = true; break; } } else { flag = false; } nextByte = Source.NextByte; num++; } return(-1); }
SkipPastCRLF(IReadChunkBytes Source) { int BytesRead; int Current; bool Escape; bool InQS; bool HaveCR; bool HaveLF; BytesRead = 0; Escape = false; InQS = false; HaveCR = false; HaveLF = false; GlobalLog.Enter("SkipPastCRLF"); // Loop through the buffer, looking at each byte. We have a // pseudo state machine going here, and the action we take // with each byte depends on the state. Current = Source.NextByte; BytesRead++; while (Current != -1) { // If we saw a CR last time, it must be followed by an unescaped // LF, otherwise it's an error. If it is followed by a LF, and // we're not in a quoted string, then we've found our termination. // If we are in a quoted string, this could be the start of a LWS // production. Remember that, and next time through we'll // check to make sure that this is an LWS production. if (HaveCR) { if (Current != '\n') { // CR w/o a trailing LF is an error. GlobalLog.Leave("SkipPastCRLF", 0); return(0); } else { if (Escape) { // We have an CR, but they're trying to escape the // LF. This is an error. GlobalLog.Leave("SkipPastCRLF", 0); return(0); } // If we're not in a quoted string, we're done. if (!InQS) { // We've found the terminating CRLF pair. GlobalLog.Leave("SkipPastCRLF", 0); return(BytesRead); } else { // We're in a quoted string, so set HaveLF // so we remember to check for a LWS production next // time. HaveLF = true; // We've proceessed this byte, set Escape so we don't // do it again. Escape = true; } } // We're past the CR now, don't remember it any more. HaveCR = false; } else { // If HaveLF is set, we must be in a quoted string and have // seen a CRLF pair. Make sure this character is a space or // tab. if (HaveLF) { // We have a LF. For this to be valid, we have to have a // space or tab be the next character. if (Current != ' ' && Current != '\t') { // Not a continuation, so return an error. GlobalLog.Leave("SkipPastCRLF", 0); return(0); } Escape = true; // Don't process this byte again. HaveLF = false; } } // If we're escaping, just skip the next character. if (!Escape) { switch (Current) { case '"': if (InQS) { InQS = false; } else { InQS = true; } break; case '\\': if (InQS) { Escape = true; } break; case '\r': HaveCR = true; break; case '\n': // If we get here, we have a LF without a preceding CR. // This is an error. GlobalLog.Leave("SkipPastCRLF", 0); return(0); default: break; } } else { // We're escaping, do nothing but rest the Escape flag. Escape = false; } Current = Source.NextByte; BytesRead++; } // If we get here, we never saw the terminating CRLF, so return -1. GlobalLog.Leave("SkipPastCRLF", -1); return(-1); }
GetChunkSize(IReadChunkBytes Source, out int chunkSize) { int BytesRead; int Size; int Current; GlobalLog.Enter("GetChunkSize"); Size = 0; // // Loop while we have data. If we run out of data and exit the loop // at the bottom, then we've run out of data and haven't found the // length. Current = Source.NextByte; BytesRead = 0; if (Current == 10 || Current == 13) { GlobalLog.Print(" Got Char: " + Current.ToString()); BytesRead++; Current = Source.NextByte; } while (Current != -1) { // Get the next byte, and decode it. if (Current >= '0' && Current <= '9') { // Normalize it to 0 based. Current -= '0'; } else { // If we're here, this might be a hex digit. // If it is, normalize it to 10 based. if (Current >= 'a' && Current <= 'f') { Current -= 'a'; } else { if (Current >= 'A' && Current <= 'F') { Current -= 'A'; } else { // Done with the decoding. If we haven't actually // decoded a digit yet, we'll end up returning // 0, which will signal the error. // Push back the byte we read and didn't use. Source.NextByte = Current; chunkSize = Size; // Return how many bytes we took. GlobalLog.Print("*Size* = " + Size.ToString()); GlobalLog.Leave("GetChunkSize", BytesRead); return(BytesRead); } } // If we get here we've had an A-F digit, add 10 // to it to normalize it. Current += 10; } // Update the size and our state. Size *= 16; Size += Current; BytesRead++; Current = Source.NextByte; } chunkSize = Size; GlobalLog.Print("*Size* = " + Size.ToString()); GlobalLog.Leave("GetChunkSize", -1); return(-1); }
internal static int SkipPastCRLF(IReadChunkBytes Source) { int num = 0; bool flag = false; bool flag2 = false; bool flag3 = false; bool flag4 = false; int nextByte = Source.NextByte; num++; while (nextByte != -1) { if (flag3) { if (nextByte != 10) { return 0; } if (flag) { return 0; } if (!flag2) { return num; } flag4 = true; flag = true; flag3 = false; } else if (flag4) { if ((nextByte != 0x20) && (nextByte != 9)) { return 0; } flag = true; flag4 = false; } if (!flag) { switch (nextByte) { case 0x22: if (flag2) { flag2 = false; } else { flag2 = true; } break; case 0x5c: if (flag2) { flag = true; } break; case 10: return 0; case 13: flag3 = true; break; } } else { flag = false; } nextByte = Source.NextByte; num++; } return -1; }