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Land #117 - handle zero-byte reads and writes gracefully

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This commit is contained in:
OJ 2015-01-28 19:47:53 +10:00
commit 237897c218
1 changed files with 2 additions and 2 deletions
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4
c/meterpreter/source/extensions/stdapi/server/fs/file.c
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@ -26,7 +26,7 @@ static DWORD file_channel_write(Channel *channel, Packet *request,
DWORD written = 0;
// Write a chunk
if ((written = (DWORD)fwrite(buffer, 1, bufferSize, ctx->fd)) <= 0)
if (bufferSize && (written = (DWORD)fwrite(buffer, 1, bufferSize, ctx->fd)) <= 0)
{
written = 0;
result = GetLastError();
@ -67,7 +67,7 @@ static DWORD file_channel_read(Channel *channel, Packet *request,
DWORD bytes = 0;
// Read a chunk
if ((bytes= (DWORD)fread(buffer, 1, bufferSize, ctx->fd)) <= 0)
if (bufferSize && (bytes= (DWORD)fread(buffer, 1, bufferSize, ctx->fd)) <= 0)
{
bytes = 0;
result = GetLastError();