391 lines
9.3 KiB
C
391 lines
9.3 KiB
C
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#include "brian.h"
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PCHAR
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SwallowNonWhite (
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IN PCHAR Ptr,
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OUT PULONG Count
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)
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{
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ULONG LocalCount = 0;
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while (*Ptr) {
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if (*Ptr == ' ' || *Ptr == '\t' ) {
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break;
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}
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LocalCount += 1;
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Ptr++;
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}
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*Count = LocalCount;
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return Ptr;
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}
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PCHAR
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SwallowWhite (
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IN PCHAR Ptr,
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OUT PULONG Count
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)
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{
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ULONG LocalCount = 0;
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while (*Ptr != '\0') {
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if (*Ptr != ' ' && *Ptr != '\t') {
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break;
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}
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LocalCount += 1;
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Ptr++;
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}
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*Count = LocalCount;
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return Ptr;
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}
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ULONG
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AnalyzeBuffer (
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PCHAR *BuffPtr,
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PULONG ParamStringLen
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)
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{
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ULONG BytesSwallowed;
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ULONG Count;
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PCHAR CurrentChar;
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if (!ExtractCmd( BuffPtr, &BytesSwallowed )) {
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return SHELL_UNKNOWN;
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}
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//
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// Lower case the command string.
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//
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for (Count = 0, CurrentChar = *BuffPtr; Count < BytesSwallowed; Count++, CurrentChar++) {
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if ((*CurrentChar <= 'Z') && (*CurrentChar >= 'A')) {
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*CurrentChar += ('a' - 'A');
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}
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}
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*ParamStringLen = BytesSwallowed;
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if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "op", 2 )) {
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return SHELL_OPEN;
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} else if ((BytesSwallowed == 3) &&
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RtlEqualMemory( *BuffPtr, "die", 3 )) {
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return SHELL_EXIT;
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} else if ((BytesSwallowed == 3) &&
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RtlEqualMemory( *BuffPtr, "clb", 3 )) {
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return SHELL_CLEAR_BUFFER;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "db", 2 )) {
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return SHELL_DISPLAY_BYTES;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "dw", 2 )) {
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return SHELL_DISPLAY_WORDS;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "dd", 2 )) {
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return SHELL_DISPLAY_DWORDS;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "cb", 2 )) {
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return SHELL_COPY_BUFFER;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "am", 2 )) {
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return SHELL_ALLOC_MEM;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "dm", 2 )) {
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return SHELL_DEALLOC_MEM;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "fb", 2 )) {
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return SHELL_FILL_BUFFER;
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} else if ((BytesSwallowed == 5) &&
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RtlEqualMemory( *BuffPtr, "fbusn", 5 )) {
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return SHELL_FILL_BUFFER_USN;
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} else if ((BytesSwallowed == 3) &&
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RtlEqualMemory( *BuffPtr, "pea", 3 )) {
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return SHELL_PUT_EA;
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} else if ((BytesSwallowed == 3) &&
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RtlEqualMemory( *BuffPtr, "fea", 3 )) {
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return SHELL_FILL_EA;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "di", 2 )) {
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return SHELL_DISPLAY_HANDLE;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "cl", 2 )) {
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return SHELL_CLOSE_HANDLE;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "rd", 2 )) {
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return SHELL_READ_FILE;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "pa", 2 )) {
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return SHELL_PAUSE;
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} else if ((BytesSwallowed == 3) &&
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RtlEqualMemory( *BuffPtr, "qea", 3 )) {
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return SHELL_QUERY_EAS;
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} else if ((BytesSwallowed == 3) &&
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RtlEqualMemory( *BuffPtr, "sea", 3 )) {
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return SHELL_SET_EAS;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "br", 2 )) {
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return SHELL_BREAK;
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} else if ((BytesSwallowed == 4) &&
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RtlEqualMemory( *BuffPtr, "oplk", 4 )) {
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return SHELL_OPLOCK;
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} else if ((BytesSwallowed == 4) &&
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RtlEqualMemory( *BuffPtr, "fsct", 4 )) {
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return SHELL_FSCTRL;
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} else if ((BytesSwallowed == 6) &&
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RtlEqualMemory( *BuffPtr, "sparse", 6 )) {
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return SHELL_SPARSE;
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} else if ((BytesSwallowed == 3) &&
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RtlEqualMemory( *BuffPtr, "usn", 3 )) {
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return SHELL_USN;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "rp", 2 )) {
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return SHELL_REPARSE;
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} else if ((BytesSwallowed == 5) &&
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RtlEqualMemory( *BuffPtr, "ioctl", 4 )) {
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return SHELL_IOCTL;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "wr", 2 )) {
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return SHELL_WRITE;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "qd", 2 )) {
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return SHELL_QDIR;
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} else if ((BytesSwallowed == 3) &&
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RtlEqualMemory( *BuffPtr, "dqd", 3 )) {
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return SHELL_DISPLAY_QDIR;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "qf", 2 )) {
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return SHELL_QFILE;
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} else if ((BytesSwallowed == 3) &&
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RtlEqualMemory( *BuffPtr, "dqf", 3 )) {
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return SHELL_DISPLAY_QFILE;
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} else if ((BytesSwallowed == 3) &&
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RtlEqualMemory( *BuffPtr, "ncd", 3 )) {
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return SHELL_NOTIFY_CHANGE;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "et", 2 )) {
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return SHELL_ENTER_TIME;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "dt", 2 )) {
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return SHELL_DISPLAY_TIME;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "sf", 2 )) {
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return SHELL_SETFILE;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "qv", 2 )) {
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return SHELL_QUERY_VOLUME;
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} else if ((BytesSwallowed == 3) &&
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RtlEqualMemory( *BuffPtr, "dqv", 3 )) {
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return SHELL_DISPLAY_QVOL;
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} else if ((BytesSwallowed == 2) &&
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RtlEqualMemory( *BuffPtr, "sv", 2 )) {
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return SHELL_SET_VOLUME;
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} else if ((BytesSwallowed == 3) &&
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RtlEqualMemory( *BuffPtr, "can", 2 )) {
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return SHELL_CANCEL_IO;
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}
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return SHELL_UNKNOWN;
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}
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BOOLEAN
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ExtractCmd (
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PCHAR *BufferPtr,
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PULONG BufferLen
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)
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{
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BOOLEAN Status;
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PCHAR CurrentLoc;
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PCHAR StartLoc;
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ULONG BytesSwallowed;
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//
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// Remember the total length and the starting position.
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// Bytes swallowed is zero.
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//
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CurrentLoc = *BufferPtr;
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BytesSwallowed = 0;
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Status = TRUE;
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//
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// Swallow leading white spaces.
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//
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CurrentLoc = SwallowWhite (CurrentLoc, &BytesSwallowed);
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//
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// If first character is NULL, then there was no command.
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//
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if (!*CurrentLoc) {
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Status = FALSE;
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//
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// Else find the next white space.
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//
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} else {
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StartLoc = CurrentLoc;
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CurrentLoc = SwallowNonWhite (CurrentLoc, &BytesSwallowed);
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}
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//
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// Update the passed in values.
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// Return the status of this operation.
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//
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*BufferPtr = StartLoc;
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*BufferLen = BytesSwallowed;
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return Status;
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}
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VOID
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CommandSummary ()
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{
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printf( "\nBSHELL Command Summary" );
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printf( "\n\tdie Exit BSHELL" );
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printf( "\n\tpa Pause input" );
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printf( "\n\tbr Break into debugger" );
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printf( "\n" );
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printf( "\n\top Open a file, directory or volume" );
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printf( "\n\tcan Cancel IO on a handle" );
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printf( "\n\tcl Close a file handle" );
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printf( "\n" );
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printf( "\n\tqd Query directory operation" );
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printf( "\n\tdqd Disply query directory buffer" );
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printf( "\n\tncd Notify change directory" );
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printf( "\n" );
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printf( "\n\trd Read from a file" );
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printf( "\n\twr Write to a file" );
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printf( "\n" );
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printf( "\n\tqf Query file information" );
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printf( "\n\tdqf Display query file buffer" );
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printf( "\n\tsf Set file information" );
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printf( "\n" );
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printf( "\n\tqv Query volume information" );
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printf( "\n\tdqv Display volume informatin" );
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printf( "\n\tsv Set volume information" );
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printf( "\n" );
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printf( "\n\tfsct Fsctrl operation" );
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printf( "\n\tsparse Sparse file operation" );
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printf( "\n\tusn Usn operation" );
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printf( "\n\trp Reparse operation" );
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printf( "\n\toplk Oplock operation" );
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printf( "\n\tioctl Ioctl operation" );
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printf( "\n" );
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printf( "\n\tclb Clear a buffer" );
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printf( "\n\tdb Display a buffer in bytes" );
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printf( "\n\tdw Display a buffer in words" );
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printf( "\n\tdd Display a buffer in dwords" );
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printf( "\n\tcb Copy a buffer" );
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printf( "\n\tfb Fill a buffer" );
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printf( "\n\tfbusn Fill a usn fsctl buffer" );
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printf( "\n" );
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printf( "\n\tam Allocate memory" );
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printf( "\n\tdm Deallocate memory" );
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printf( "\n" );
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printf( "\n\tdi Display information on an index" );
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printf( "\n" );
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printf( "\n\tqea Query the ea's for a file" );
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printf( "\n\tsea Set the ea's for a file" );
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printf( "\n\tpea Store an ea name in a buffer for query ea" );
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printf( "\n\tfea Store an ea name in a buffer to set an ea" );
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printf( "\n" );
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printf( "\n\tet Enter a time value into a buffer" );
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printf( "\n\tdt Display a buffer as a time value" );
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printf( "\n\n" );
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return;
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}
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