nginx-0.3.8-RELEASE import *) Security: nginx now checks URI got from a backend in "X-Accel-Redirect" header line or in SSI file for the "/../" paths and zeroes. *) Change: nginx now does not treat the empty user name in the "Authorization" header line as valid one. *) Feature: the "ssl_session_timeout" directives of the ngx_http_ssl_module and ngx_imap_ssl_module. *) Feature: the "auth_http_header" directive of the ngx_imap_auth_http_module. *) Feature: the "add_header" directive. *) Feature: the ngx_http_realip_module. *) Feature: the new variables to use in the "log_format" directive: $bytes_sent, $apache_bytes_sent, $status, $time_gmt, $uri, $request_time, $request_length, $upstream_status, $upstream_response_time, $gzip_ratio, $uid_got, $uid_set, $connection, $pipe, and $msec. The parameters in the "%name" form will be canceled soon. *) Change: now the false variable values in the "if" directive are the empty string "" and string starting with "0". *) Bugfix: while using proxied or FastCGI-server nginx may leave connections and temporary files with client requests in open state. *) Bugfix: the worker processes did not flush the buffered logs on graceful exit. *) Bugfix: if the request URI was changes by the "rewrite" directive and the request was proxied in location given by regular expression, then the incorrect request was transferred to backend; the bug had appeared in 0.2.6. *) Bugfix: the "expires" directive did not remove the previous "Expires" header. *) Bugfix: nginx may stop to accept requests if the "rtsig" method and several worker processes were used. *) Bugfix: the "\"" and "\'" escape symbols were incorrectly handled in SSI commands. *) Bugfix: if the response was ended just after the SSI command and gzipping was used, then the response did not transferred complete or did not transferred at all.

/*
 * Copyright (C) Igor Sysoev
 */


#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>


#define NGX_WSABUFS  8 


ssize_t
ngx_wsarecv_chain(ngx_connection_t *c, ngx_chain_t *chain)
{
    int           rc;
    u_char       *prev;
    u_long        bytes, flags;
    size_t        size;
    ngx_err_t     err;
    ngx_array_t   vec;
    ngx_event_t  *rev;
    LPWSABUF      wsabuf;
    WSABUF        wsabufs[NGX_WSABUFS];

    prev = NULL;
    wsabuf = NULL;
    flags = 0;
    size = 0;
    bytes = 0;

    vec.elts = wsabufs;
    vec.nelts = 0;
    vec.size = sizeof(WSABUF);
    vec.nalloc = NGX_WSABUFS; 
    vec.pool = c->pool;

    /* coalesce the neighbouring bufs */

    while (chain) {
        if (prev == chain->buf->last) {
            wsabuf->len += chain->buf->end - chain->buf->last;

        } else {
            wsabuf = ngx_array_push(&vec);
            if (wsabuf == NULL) {
                return NGX_ERROR;
            }

            wsabuf->buf = (char *) chain->buf->last;
            wsabuf->len = chain->buf->end - chain->buf->last;
        }

        size += chain->buf->end - chain->buf->last;
        prev = chain->buf->end;
        chain = chain->next;
    }

    ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
                   "WSARecv: %d:%d", vec.nelts, wsabuf->len);


    rc = WSARecv(c->fd, vec.elts, vec.nelts, &bytes, &flags, NULL, NULL);

    rev = c->read;

    if (rc == -1) {
        rev->ready = 0;
        err = ngx_socket_errno;

        if (err == WSAEWOULDBLOCK) {
            ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
                           "WSARecv() not ready");
            return NGX_AGAIN;
        }

        rev->error = 1;
        ngx_connection_error(c, err, "WSARecv() failed");
        return NGX_ERROR;
    }

    if (bytes < size) {
        rev->ready = 0;
    }

    if (bytes == 0) {
        rev->eof = 1;
    }

    return bytes;
}