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forked from pool/varnish
Jan Engelhardt 2015-03-27 10:35:30 +00:00 committed by Git OBS Bridge
parent b9dfe888ab
commit 2079fa56a4
5 changed files with 340 additions and 25 deletions

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@ -0,0 +1,290 @@
From 9d61ea4d722549a984d912603902fccfac473824 Mon Sep 17 00:00:00 2001
From: Martin Blix Grydeland <martin@varnish-software.com>
Date: Fri, 13 Mar 2015 15:23:15 +0100
Subject: [PATCH] Fail fetch on malformed Content-Length header
Add a common content length parser that is being used by both client
and backend side.
Original patch by: fgs
Fixes: #1691
---
bin/varnishd/cache/cache.h | 7 ++++---
bin/varnishd/cache/cache_http.c | 29 +++++++++++++++++++++++++++++
bin/varnishd/cache/cache_http1_fetch.c | 32 +++++---------------------------
bin/varnishd/cache/cache_http1_fsm.c | 20 ++++++++++----------
bin/varnishd/cache/cache_http1_proto.c | 5 +++--
bin/varnishd/cache/cache_rfc2616.c | 18 +++++++++++++++---
bin/varnishtest/tests/r01691.vtc | 21 +++++++++++++++++++++
7 files changed, 87 insertions(+), 45 deletions(-)
create mode 100644 bin/varnishtest/tests/r01691.vtc
Index: varnish-4.0.3/bin/varnishd/cache/cache.h
===================================================================
--- varnish-4.0.3.orig/bin/varnishd/cache/cache.h
+++ varnish-4.0.3/bin/varnishd/cache/cache.h
@@ -208,7 +208,7 @@ struct http {
*
*/
-typedef ssize_t htc_read(struct http_conn *, void *, size_t);
+typedef ssize_t htc_read(struct http_conn *, void *, ssize_t);
struct http_conn {
unsigned magic;
@@ -560,7 +560,7 @@ struct busyobj {
struct pool_task fetch_task;
- char *h_content_length;
+ ssize_t content_length;
#define BO_FLAG(l, r, w, d) unsigned l:1;
#include "tbl/bo_flags.h"
@@ -1014,6 +1014,7 @@ int http_GetHdrData(const struct http *h
int http_GetHdrField(const struct http *hp, const char *hdr,
const char *field, char **ptr);
double http_GetHdrQ(const struct http *hp, const char *hdr, const char *field);
+ssize_t http_GetContentLength(const struct http *hp);
uint16_t http_GetStatus(const struct http *hp);
void http_SetStatus(struct http *to, uint16_t status);
const char *http_GetReq(const struct http *hp);
@@ -1040,7 +1041,7 @@ void HTTP1_Init(struct http_conn *htc, s
unsigned maxbytes, unsigned maxhdr);
enum htc_status_e HTTP1_Reinit(struct http_conn *htc);
enum htc_status_e HTTP1_Rx(struct http_conn *htc);
-ssize_t HTTP1_Read(struct http_conn *htc, void *d, size_t len);
+ssize_t HTTP1_Read(struct http_conn *htc, void *d, ssize_t len);
enum htc_status_e HTTP1_Complete(struct http_conn *htc);
uint16_t HTTP1_DissectRequest(struct req *);
uint16_t HTTP1_DissectResponse(struct http *sp, const struct http_conn *htc);
Index: varnish-4.0.3/bin/varnishd/cache/cache_http.c
===================================================================
--- varnish-4.0.3.orig/bin/varnishd/cache/cache_http.c
+++ varnish-4.0.3/bin/varnishd/cache/cache_http.c
@@ -488,6 +488,35 @@ http_GetHdrField(const struct http *hp,
return (i);
}
+/*--------------------------------------------------------------------*/
+
+ssize_t
+http_GetContentLength(const struct http *hp)
+{
+ ssize_t cl, cll;
+ char *b;
+
+ CHECK_OBJ_NOTNULL(hp, HTTP_MAGIC);
+
+ if (!http_GetHdr(hp, H_Content_Length, &b))
+ return (-1);
+ cl = 0;
+ if (!vct_isdigit(*b))
+ return (-2);
+ for (;vct_isdigit(*b); b++) {
+ cll = cl;
+ cl *= 10;
+ cl += *b - '0';
+ if (cll != cl / 10)
+ return (-2);
+ }
+ while (vct_islws(*b))
+ b++;
+ if (*b != '\0')
+ return (-2);
+ return (cl);
+}
+
/*--------------------------------------------------------------------
* XXX: redo with http_GetHdrField() ?
*/
Index: varnish-4.0.3/bin/varnishd/cache/cache_http1_fetch.c
===================================================================
--- varnish-4.0.3.orig/bin/varnishd/cache/cache_http1_fetch.c
+++ varnish-4.0.3/bin/varnishd/cache/cache_http1_fetch.c
@@ -43,29 +43,6 @@
#include "vtcp.h"
#include "vtim.h"
-/*--------------------------------------------------------------------
- * Convert a string to a size_t safely
- */
-
-static ssize_t
-vbf_fetch_number(const char *nbr, int radix)
-{
- uintmax_t cll;
- ssize_t cl;
- char *q;
-
- if (*nbr == '\0')
- return (-1);
- cll = strtoumax(nbr, &q, radix);
- if (q == NULL || *q != '\0')
- return (-1);
-
- cl = (ssize_t)cll;
- if((uintmax_t)cl != cll) /* Protect against bogusly large values */
- return (-1);
- return (cl);
-}
-
/*--------------------------------------------------------------------*/
static enum vfp_status __match_proto__(vfp_pull_f)
@@ -167,7 +144,6 @@ ssize_t
V1F_Setup_Fetch(struct busyobj *bo)
{
struct http_conn *htc;
- ssize_t cl;
CHECK_OBJ_NOTNULL(bo, BUSYOBJ_MAGIC);
htc = &bo->htc;
@@ -176,13 +152,15 @@ V1F_Setup_Fetch(struct busyobj *bo)
switch(htc->body_status) {
case BS_EOF:
+ assert(bo->content_length == -1);
VFP_Push(bo, v1f_pull_eof, 0);
return(-1);
case BS_LENGTH:
- cl = vbf_fetch_number(bo->h_content_length, 10);
- VFP_Push(bo, v1f_pull_straight, cl);
- return (cl);
+ assert(bo->content_length > 0);
+ VFP_Push(bo, v1f_pull_straight, bo->content_length);
+ return (bo->content_length);
case BS_CHUNKED:
+ assert(bo->content_length == -1);
VFP_Push(bo, v1f_pull_chunked, -1);
return (-1);
default:
Index: varnish-4.0.3/bin/varnishd/cache/cache_http1_fsm.c
===================================================================
--- varnish-4.0.3.orig/bin/varnishd/cache/cache_http1_fsm.c
+++ varnish-4.0.3/bin/varnishd/cache/cache_http1_fsm.c
@@ -262,22 +262,22 @@ http1_cleanup(struct sess *sp, struct wo
static enum req_body_state_e
http1_req_body_status(struct req *req)
{
- char *ptr, *endp;
+ ssize_t cl;
CHECK_OBJ_NOTNULL(req, REQ_MAGIC);
- if (http_GetHdr(req->http, H_Content_Length, &ptr)) {
- AN(ptr);
- if (*ptr == '\0')
- return (REQ_BODY_FAIL);
- req->req_bodybytes = strtoul(ptr, &endp, 10);
- if (*endp != '\0' && !vct_islws(*endp))
- return (REQ_BODY_FAIL);
- if (req->req_bodybytes == 0)
- return (REQ_BODY_NONE);
+ req->req_bodybytes = 0;
+ cl = http_GetContentLength(req->http);
+ if (cl == -2)
+ return (REQ_BODY_FAIL);
+ else if (cl == 0)
+ return (REQ_BODY_NONE);
+ else if (cl > 0) {
+ req->req_bodybytes = cl;
req->h1.bytes_yet = req->req_bodybytes - req->h1.bytes_done;
return (REQ_BODY_PRESENT);
}
+ assert(cl == -1); /* No Content-Length header */
if (http_HdrIs(req->http, H_Transfer_Encoding, "chunked")) {
req->chunk_ctr = -1;
return (REQ_BODY_CHUNKED);
Index: varnish-4.0.3/bin/varnishd/cache/cache_http1_proto.c
===================================================================
--- varnish-4.0.3.orig/bin/varnishd/cache/cache_http1_proto.c
+++ varnish-4.0.3/bin/varnishd/cache/cache_http1_proto.c
@@ -191,14 +191,15 @@ HTTP1_Rx(struct http_conn *htc)
* Read up to len bytes, returning pipelined data first.
*/
-ssize_t
-HTTP1_Read(struct http_conn *htc, void *d, size_t len)
+ssize_t __match_proto__(htc_read)
+HTTP1_Read(struct http_conn *htc, void *d, ssize_t len)
{
size_t l;
unsigned char *p;
ssize_t i = 0;
CHECK_OBJ_NOTNULL(htc, HTTP_CONN_MAGIC);
+ assert(len > 0);
l = 0;
p = d;
if (htc->pipeline.b) {
Index: varnish-4.0.3/bin/varnishd/cache/cache_rfc2616.c
===================================================================
--- varnish-4.0.3.orig/bin/varnishd/cache/cache_rfc2616.c
+++ varnish-4.0.3/bin/varnishd/cache/cache_rfc2616.c
@@ -188,6 +188,7 @@ enum body_status
RFC2616_Body(struct busyobj *bo, struct dstat *stats)
{
struct http *hp;
+ ssize_t cl;
char *b;
hp = bo->beresp;
@@ -199,6 +200,8 @@ RFC2616_Body(struct busyobj *bo, struct
else
bo->should_close = 0;
+ bo->content_length = -1;
+
if (!strcasecmp(http_GetReq(bo->bereq), "head")) {
/*
* A HEAD request can never have a body in the reply,
@@ -246,9 +249,18 @@ RFC2616_Body(struct busyobj *bo, struct
return (BS_ERROR);
}
- if (http_GetHdr(hp, H_Content_Length, &bo->h_content_length)) {
- stats->fetch_length++;
- return (BS_LENGTH);
+ cl = http_GetContentLength(hp);
+ if (cl == -2)
+ return (BS_ERROR);
+ if (cl >= 0) {
+ bo->content_length = cl;
+ if (cl == 0) {
+ stats->fetch_zero++;
+ return (BS_NONE);
+ } else {
+ stats->fetch_length++;
+ return (BS_LENGTH);
+ }
}
if (http_HdrIs(hp, H_Connection, "keep-alive")) {
Index: varnish-4.0.3/bin/varnishtest/tests/r01691.vtc
===================================================================
--- /dev/null
+++ varnish-4.0.3/bin/varnishtest/tests/r01691.vtc
@@ -0,0 +1,21 @@
+varnishtest "Test bogus Content-Length header"
+
+server s1 {
+ rxreq
+ txresp -nolen -hdr "Content-Length: bogus"
+} -start
+
+varnish v1 -vcl+backend {
+
+} -start
+
+logexpect l1 -v v1 {
+ expect * 1002 VCL_Error "Body cannot be fetched"
+} -start
+
+client c1 {
+ txreq
+ rxresp
+} -run
+
+logexpect l1 -wait

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@ -1,3 +0,0 @@
version https://git-lfs.github.com/spec/v1
oid sha256:302fd6afc771524ca3912f5d945ab197a55762385c012b2054df7d86bf7ae2b7
size 2116664

3
varnish-4.0.3.tar.gz Normal file
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@ -0,0 +1,3 @@
version https://git-lfs.github.com/spec/v1
oid sha256:94b9a174097f47db2286acd2c35f235e49a2b7a9ddfdbd6eb7aa4da9ae8f8206
size 1866760

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@ -1,3 +1,19 @@
-------------------------------------------------------------------
Fri Mar 27 10:34:15 UTC 2015 - jengelh@inai.de
- Update to new upstream release 4.0.3
* Full support for streaming objects through from the backend on a
cache miss. Bytes will be sent to 1..n requesting clients as they
come in from the backend server.
* Background (re)fetch of expired objects. On a cache miss where a
stale copy is available, serve the client the stale copy while
fetching an updated copy from the backend in the background.
* New varnishlog query language, allowing automatic grouping of
requests when debugging ESI or a failed backend request.
* Comprehensive request timestamp and byte counters.
- Add 0001-Fail-fetch-on-malformed-Content-Length-header.patch
[bnc#921316]
-------------------------------------------------------------------
Fri Jan 3 10:57:19 UTC 2014 - danimo@owncloud.com

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@ -1,7 +1,7 @@
#
# spec file for package varnish
#
# Copyright (c) 2009 SUSE LINUX Products GmbH, Nuernberg, Germany.
# Copyright (c) 2015 SUSE LINUX GmbH, Nuernberg, Germany.
#
# All modifications and additions to the file contributed by third parties
# remain the property of their copyright owners, unless otherwise agreed
@ -15,19 +15,19 @@
# Please submit bugfixes or comments via http://bugs.opensuse.org/
#
Name: varnish
%define library_name libvarnishapi1
Version: 3.0.5
Version: 4.0.3
Release: 0
Summary: Varnish is a high-performance HTTP accelerator
License: BSD-2-Clause
Group: Productivity/Networking/Web/Proxy
URL: http://varnish-cache.org/
Url: http://varnish-cache.org/
#Git-Clone: git://git.varnish-cache.org/varnish-cache
#Git-Web: https://varnish-cache.org/trac/browser
#DL-URL: http://downloads.sf.net/varnish/%name-%version.tar.bz2
Source: %name-%version.tar.gz
Source: https://repo.varnish-cache.org/source/%name-%version.tar.gz
Source2: varnish.init
Source3: varnish.sysconfig
Source4: vcl.conf
@ -35,17 +35,22 @@ Source5: varnish.logrotate
Source6: varnishlog.init
Source7: varnish.service
Source8: varnishlog.service
Patch1: 0001-Fail-fetch-on-malformed-Content-Length-header.patch
BuildRoot: %_tmppath/%name-%version-build
BuildRequires: libxslt, ncurses-devel, pcre-devel, readline-devel
BuildRequires: pkgconfig, xz
BuildRoot: %{_tmppath}/%{name}-%{version}-build
BuildRequires: libxslt
BuildRequires: ncurses-devel
BuildRequires: pcre-devel
BuildRequires: pkgconfig
BuildRequires: readline-devel
BuildRequires: python-docutils
BuildRequires: xz
Prereq(post): %_sbindir/useradd %_sbindir/groupadd
%if 0%{?suse_version} >= 1010
Recommends: logrotate
%endif
%if 0%{?suse_version} >= 1210
BuildRequires: systemd
%{?systemd_requires}
BuildRequires: systemd-rpm-macros
%endif
%define pkg_home %_localstatedir/lib/%name
%define pkg_logdir %_localstatedir/log/%name
@ -63,8 +68,8 @@ server. The purpose of this is to minimize the requests going to the backend
server(s) by serving the same document to potentially many users.
%package -n %library_name
Group: Productivity/Networking/Web/Proxy
Summary: Shared libraries for Varnish
Group: Productivity/Networking/Web/Proxy
%description -n %library_name
Varnish is an HTTP accelerator. An HTTP accelerator (often called Reverse
@ -79,9 +84,9 @@ server(s) by serving the same document to potentially many users.
This package holds the shared libraries for varnish.
%package devel
Group: Development/Libraries/C and C++
Requires: %name = %version
Summary: Development files for Varnish
Group: Development/Libraries/C and C++
%description devel
Varnish is an HTTP accelerator. An HTTP accelerator (often called Reverse
@ -97,10 +102,11 @@ This package holds the development files for varnish.
%prep
%setup -q
%patch -P 1 -p1
%build
export CFLAGS="%optflags -fstack-protector"
%configure --disable-static \
%configure --disable-static --docdir="%_docdir/%name" \
--localstatedir=%_localstatedir/cache/ \
--enable-developer-warnings
make %{?_smp_mflags}
@ -133,6 +139,8 @@ install -Dpm 0644 %{S:4} "$b/%_sysconfdir/%name/vcl.conf.example";
find "$b" -type f -name "*.la" -delete
mkdir -p "$b/%pkg_logdir"
mkdir -p "$b/%_docdir/%name"
cp -a ChangeLog LICENSE README "$b/%_docdir/%name/"
%pre
%_bindir/getent group varnish >/dev/null || \
@ -185,12 +193,12 @@ mkdir -p "$b/%pkg_logdir"
%dir %attr(0750,root,varnish) %_sysconfdir/%name/
%config(noreplace) %attr(0640,root,varnish) %_sysconfdir/%name/vcl.conf
%config %attr(0640,root,varnish) %_sysconfdir/%name/vcl.conf.example
%config(noreplace) %attr(0640,root,varnish) %_sysconfdir/%name/default.vcl
%_libdir/varnish
%_sbindir/varnish*
%_sbindir/rcvarnish*
%_mandir/man*/*
%doc ChangeLog LICENSE README
%_docdir/%name/
%_datadir/%name/
%dir %attr(0750,varnish,varnish) %pkg_home
%dir %attr(0750,varnish,varnish) %pkg_cachedir
%dir %attr(0750,varnish,varnish) %pkg_logdir
@ -209,6 +217,7 @@ mkdir -p "$b/%pkg_logdir"
%files devel
%defattr(-,root,root,-)
%_includedir/varnish
%_datadir/aclocal/
%_libdir/pkgconfig/*
%_libdir/libvarnishapi.so