int http_chunk_append_mem(server *srv, connection *con, const char * mem, size_t len) {
chunkqueue *cq;
if (!con) return -1;
cq = con->write_queue;
if (len == 0) {
if (con->response.transfer_encoding & HTTP_TRANSFER_ENCODING_CHUNKED) {
chunkqueue_append_mem(cq, "0\r\n\r\n", 5 + 1);
} else {
chunkqueue_append_mem(cq, "", 1);
}
return 0;
}
if (con->response.transfer_encoding & HTTP_TRANSFER_ENCODING_CHUNKED) {
http_chunk_append_len(srv, con, len - 1);
}
chunkqueue_append_mem(cq, mem, len);
if (con->response.transfer_encoding & HTTP_TRANSFER_ENCODING_CHUNKED) {
chunkqueue_append_mem(cq, "\r\n", 2 + 1);
}
return 0;
}
int http_chunk_append_file(server * srv, connection * con, buffer * fn,
off_t offset, off_t len)
{
chunkqueue *cq;
if (!con)
return -1;
cq = con->write_queue;
if (con->response.transfer_encoding & HTTP_TRANSFER_ENCODING_CHUNKED)
{
http_chunk_append_len(srv, con, len);
}
chunkqueue_append_file(cq, fn, offset, len);
if (con->response.transfer_encoding & HTTP_TRANSFER_ENCODING_CHUNKED
&& len > 0)
{
chunkqueue_append_mem(cq, "\r\n", 2 + 1);
}
return 0;
}
static void http_chunk_append_file_fd_range(server *srv, connection *con, buffer *fn, int fd, off_t offset, off_t len) {
chunkqueue *cq = con->write_queue;
if (con->response.transfer_encoding & HTTP_TRANSFER_ENCODING_CHUNKED) {
http_chunk_append_len(srv, con, (uintmax_t)len);
}
chunkqueue_append_file_fd(cq, fn, fd, offset, len);
if (con->response.transfer_encoding & HTTP_TRANSFER_ENCODING_CHUNKED) {
chunkqueue_append_mem(cq, CONST_STR_LEN("\r\n"));
}
}
liHandlerResult li_filter_chunked_encode(liVRequest *vr, liChunkQueue *out, liChunkQueue *in) {
UNUSED(vr);
if (in->length > 0) {
http_chunk_append_len(out, in->length);
li_chunkqueue_steal_all(out, in);
li_chunkqueue_append_mem(out, CONST_STR_LEN("\r\n"));
}
if (in->is_closed) {
if (!out->is_closed) {
li_chunkqueue_append_mem(out, CONST_STR_LEN("0\r\n\r\n"));
out->is_closed = TRUE;
}
return LI_HANDLER_GO_ON;
}
return LI_HANDLER_GO_ON;
}
int http_chunk_append_buffer(server *srv, connection *con, buffer *mem) {
chunkqueue *cq;
if (!con) return -1;
cq = con->write_queue;
if (con->response.transfer_encoding & HTTP_TRANSFER_ENCODING_CHUNKED) {
http_chunk_append_len(srv, con, mem->used - 1);
}
chunkqueue_append_buffer(cq, mem);
if (con->response.transfer_encoding & HTTP_TRANSFER_ENCODING_CHUNKED && mem->used > 0) {
chunkqueue_append_mem(cq, "\r\n", 2 + 1);
}
return 0;
}
int http_chunk_append_file(server *srv, connection *con, buffer *fn, off_t offset, off_t len) {
chunkqueue *cq;
if (!con) return -1;
Cdbg(DBE, "enter http_chunk_append_file..with fd=[%d], fn=[%s], offset=[%d], len=[%d]", con->fd, fn->ptr, offset, len);
cq = con->write_queue;
if (con->response.transfer_encoding & HTTP_TRANSFER_ENCODING_CHUNKED) {
http_chunk_append_len(srv, con, len);
}
chunkqueue_append_file(cq, fn, offset, len);
if (con->response.transfer_encoding & HTTP_TRANSFER_ENCODING_CHUNKED && len > 0) {
chunkqueue_append_mem(cq, "\r\n", 2 + 1);
}
Cdbg(DBE, "leave");
return 0;
}
static int http_chunk_append_data(server *srv, connection *con, buffer *b, const char * mem, size_t len) {
chunkqueue * const cq = con->write_queue;
chunk *c = cq->last;
if (0 == len) return 0;
/* current usage does not append_mem or append_buffer after appending
* file, so not checking if users of this interface have appended large
* (references to) files to chunkqueue, which would not be in memory */
/*(allow slightly larger mem use if FDEVENT_STREAM_RESPONSE_BUFMIN
* to reduce creation of temp files when backend producer will be
* blocked until more data is sent to network to client)*/
if ((c && c->type == FILE_CHUNK && c->file.is_temp)
|| cq->bytes_in - cq->bytes_out + len
> 1024 * ((con->conf.stream_response_body & FDEVENT_STREAM_RESPONSE_BUFMIN) ? 128 : 64)) {
return http_chunk_append_to_tempfile(srv, con, b ? b->ptr : mem, len);
}
/* not appending to prior mem chunk just in case using openssl
* and need to resubmit same args as prior call to openssl (required?)*/
if (con->response.transfer_encoding & HTTP_TRANSFER_ENCODING_CHUNKED) {
http_chunk_append_len(srv, con, len);
}
/*(chunkqueue_append_buffer() might steal buffer contents)*/
b ? chunkqueue_append_buffer(cq, b) : chunkqueue_append_mem(cq, mem, len);
if (con->response.transfer_encoding & HTTP_TRANSFER_ENCODING_CHUNKED) {
chunkqueue_append_mem(cq, CONST_STR_LEN("\r\n"));
}
return 0;
}