void HttpFileAccess::sendFile(const UtlString& path,
const UtlString& peerName,
const HttpRequestContext& requestContext,
const HttpMessage& request,
HttpMessage*& response
)
{
UtlString message;
int file = open(path.data(), O_RDONLY);
if (0 <= file)
{
UtlString fileBuffer;
if (fileBuffer.capacity(MAX_FILE_CHUNK_SIZE + 1) >= MAX_FILE_CHUNK_SIZE + 1)
{
response->setResponseFirstHeaderLine(HTTP_PROTOCOL_VERSION_1_1,
HTTP_OK_CODE, HTTP_OK_TEXT);
response->useChunkedBody(true);
// @TODO Annotate file resources with a mime type?
// add a Content-Disposition header to suggest saving as the basename of the file
response->setContentType("application/octet-stream");
UtlString dispositionValue;
UtlString basename;
ssize_t finalSlash = path.last('/');
if (UTL_NOT_FOUND != finalSlash)
{
basename.append(path, finalSlash+1, path.length()-finalSlash);
}
else
{
basename.append(path); // don't think this should ever be true....
}
dispositionValue.append("attachment; filename=\"");
dispositionValue.append(basename);
dispositionValue.append("\"");
response->setHeaderValue(HTTP_CONTENT_DISPOSITION_FIELD,dispositionValue.data());
bool writtenOk = response->writeHeaders(requestContext.socket());
ssize_t bytes;
Int64 totalBytes = 0;
Int64 chunks = 0;
while ( writtenOk
&& (bytes = read(file, (void*)fileBuffer.data(),
MAX_FILE_CHUNK_SIZE)))
{
fileBuffer.setLength(bytes);
writtenOk = response->writeChunk(requestContext.socket(), fileBuffer);
if (writtenOk)
{
totalBytes += bytes;
chunks++;
}
OsSysLog::add(FAC_SUPERVISOR, PRI_DEBUG,
"file block %"FORMAT_INTLL"d %zd %s", chunks, bytes,
writtenOk ? "ok" : "failed");
}
if (writtenOk)
{
response->writeEndOfChunks(requestContext.socket());
message.append(" sent file '");
message.append(path);
message.append("' (");
message.appendNumber(totalBytes,"%"FORMAT_INTLL"d");
message.append(" bytes in ");
message.appendNumber(chunks,"%"FORMAT_INTLL"d");
message.append(" chunks) to peer ");
message.append(peerName);
OsSysLog::add(FAC_SUPERVISOR, PRI_INFO, "HttpFileAccess::processRequest %s",
message.data());
}
else
{
message.append("error writing response after ");
message.appendNumber(totalBytes,"%"FORMAT_INTLL"d");
message.append(" body bytes in ");
message.appendNumber(chunks,"%"FORMAT_INTLL"d");
message.append(" chunks) to peer ");
message.append(peerName);
OsSysLog::add(FAC_SUPERVISOR, PRI_ERR, "HttpFileAccess::processRequest %s",
message.data());
}
/*
* We've already written the response, so prevent HttpServer from sending it by
* not passing it back.
*/
delete response;
response = NULL;
}
else
{
// Send out-of-resources message
message.append("Supervisor Buffer Exhausted");
response->setResponseFirstHeaderLine(HTTP_PROTOCOL_VERSION,
HTTP_OUT_OF_RESOURCES_CODE,
message.data());
response->setContentType(CONTENT_TYPE_TEXT_PLAIN);
response->setBody(new HttpBody(message.data(),message.length()));
response->setContentLength(message.length());
OsSysLog::add(FAC_SUPERVISOR, PRI_ERR,
"HttpFileAccess::processRequest from %s %s",
peerName.data(), message.data());
}
}
else
{
int httpStatusCode;
UtlString httpStatusText;
switch (errno)
{
case EACCES:
httpStatusCode = HTTP_FORBIDDEN_CODE;
httpStatusText = "File Access Denied";
break;
case ENOENT:
httpStatusCode = HTTP_FILE_NOT_FOUND_CODE;
httpStatusText = HTTP_FILE_NOT_FOUND_TEXT;
break;
default:
httpStatusCode = HTTP_SERVER_ERROR_CODE;
httpStatusText = HTTP_SERVER_ERROR_TEXT;
break;
}
message.append("File '");
message.append(path);
message.append("' errno ");
message.appendNumber(errno);
message.append(" ");
char errnoMsg[1024];
strerror_r(errno, errnoMsg, sizeof(errnoMsg));
message.append(errnoMsg);
OsSysLog::add(FAC_SUPERVISOR, PRI_ERR, "HttpFileAccess::processRequest from %s %s",
peerName.data(), message.data());
response->setResponseFirstHeaderLine(HTTP_PROTOCOL_VERSION,
httpStatusCode,
httpStatusText);
response->setBody(new HttpBody(message.data(),message.length()));
response->setContentType(CONTENT_TYPE_TEXT_PLAIN);
response->setContentLength(message.length());
}
}
