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Subjectkhttpd: patch for range support + accumulated patches
The following patch adds the following functionality to khttpd:

- Range support. Only simple ranges (from-to) are supported. Range suport
enables the debian apt tool to resume aborted http file-transfers. Very
important if one plans to run a kernel/debian mirror with khttpd.

- Virtual Host support (see docs in patch)

- Persistant connections

- simple logging via printk if /proc/sys/net/khttpd/logging is set to 1.

diff -urN linux-orig/net/khttpd/accept.c linux/net/khttpd/accept.c
--- linux-orig/net/khttpd/accept.c Sat Jan 22 11:54:58 2000
+++ linux/net/khttpd/accept.c Fri Jan 12 21:19:55 2001
@@ -107,6 +107,7 @@
memset(NewRequest,0,sizeof(struct http_request));

NewRequest->sock = NewSock;
+ NewRequest->LastActive = jiffies;

NewRequest->Next = threadinfo[CPUNR].WaitForHeaderQueue;

diff -urN linux-orig/net/khttpd/datasending.c linux/net/khttpd/datasending.c
--- linux-orig/net/khttpd/datasending.c Fri Nov 17 11:36:27 2000
+++ linux/net/khttpd/datasending.c Sat Jan 13 17:58:21 2001
@@ -105,7 +105,7 @@

Space = sock_wspace(CurrentRequest->sock->sk);

- ReadSize = min(4*4096,CurrentRequest->FileLength - CurrentRequest->BytesSent);
+ ReadSize = min(4*4096,CurrentRequest->End - (CurrentRequest->BytesSent+CurrentRequest->Offset));
ReadSize = min(ReadSize , Space );

if (ReadSize>0)
@@ -119,7 +119,7 @@
read_descriptor_t desc;
loff_t *ppos;

- CurrentRequest->filp->f_pos = CurrentRequest->BytesSent;
+ CurrentRequest->filp->f_pos = CurrentRequest->BytesSent+CurrentRequest->Offset;

ppos = &CurrentRequest->filp->f_pos;

@@ -137,7 +137,7 @@
else /* FS doesn't support sendfile() */
{
mm_segment_t oldfs;
- CurrentRequest->filp->f_pos = CurrentRequest->BytesSent;
+ CurrentRequest->filp->f_pos = CurrentRequest->BytesSent+CurrentRequest->Offset;

oldfs = get_fs(); set_fs(KERNEL_DS);
retval = CurrentRequest->filp->f_op->read(CurrentRequest->filp, Block[CPUNR], ReadSize, &CurrentRequest->filp->f_pos);
@@ -160,7 +160,7 @@
If end-of-file or closed connection: Finish this request
by moving it to the "logging" queue.
*/
- if ((CurrentRequest->BytesSent>=CurrentRequest->FileLength)||
+ if ((CurrentRequest->BytesSent+CurrentRequest->Offset>=CurrentRequest->End)||
(CurrentRequest->sock->sk->state!=TCP_ESTABLISHED
&& CurrentRequest->sock->sk->state!=TCP_CLOSE_WAIT))
{
diff -urN linux-orig/net/khttpd/logging.c linux/net/khttpd/logging.c
--- linux-orig/net/khttpd/logging.c Wed Aug 18 09:45:10 1999
+++ linux/net/khttpd/logging.c Fri Jan 12 21:27:05 2001
@@ -29,6 +29,8 @@
#include <asm/uaccess.h>
#include "structure.h"
#include "prototypes.h"
+#include "sysctl.h"
+

/*

@@ -58,9 +60,22 @@
while (CurrentRequest!=NULL)
{

+ CurrentRequest->ReqCount++;
+ CurrentRequest->LastActive = jiffies;
+
+ if (sysctl_khttpd_logging) {
+ CurrentRequest->FileName[CurrentRequest->FileNameLength]=0;
+ printk(KERN_NOTICE "File=%s Host=%s Length=%d Userspace=%d\n",CurrentRequest->FileName,CurrentRequest->Host,CurrentRequest->FileLength,CurrentRequest->IsForUserspace);
+ }
Req = CurrentRequest->Next;

- CleanUpRequest(CurrentRequest);
+ if (CurrentRequest->Persistent) {
+ sanitize_request(CurrentRequest);
+ CurrentRequest->Next = threadinfo[CPUNR].WaitForHeaderQueue;
+ threadinfo[CPUNR].WaitForHeaderQueue = CurrentRequest;
+ }
+ else
+ CleanUpRequest(CurrentRequest);

threadinfo[CPUNR].LoggingQueue = Req;

diff -urN linux-orig/net/khttpd/misc.c linux/net/khttpd/misc.c
--- linux-orig/net/khttpd/misc.c Thu Sep 2 11:47:20 1999
+++ linux/net/khttpd/misc.c Fri Jan 12 21:19:55 2001
@@ -132,6 +132,89 @@
LeaveFunction("CleanUpRequest");
}

+static char Buffer[1024];
+
+static void DummyRead(struct socket *sock, int Size)
+{
+ struct msghdr msg;
+ struct iovec iov;
+ int len,totalbytes=0;
+
+ mm_segment_t oldfs;
+
+
+ EnterFunction("DummyRead");
+
+
+ if (sock->sk==NULL)
+ return;
+
+ len = 1;
+
+ totalbytes = 0;
+
+ while ((len>0)&&(totalbytes<Size)) {
+ msg.msg_name = 0;
+ msg.msg_namelen = 0;
+ msg.msg_iov = &iov;
+ msg.msg_iovlen = 1;
+ msg.msg_control = NULL;
+ msg.msg_controllen = 0;
+ msg.msg_flags = MSG_DONTWAIT;
+
+ msg.msg_iov->iov_base = &Buffer[0];
+ msg.msg_iov->iov_len = (__kernel_size_t)max(1024,Size-totalbytes);
+
+ len = 0;
+ oldfs = get_fs(); set_fs(KERNEL_DS);
+ len = sock_recvmsg(sock,&msg,1024,MSG_DONTWAIT);
+ set_fs(oldfs);
+ if (len>0)
+ totalbytes+=len;
+ }
+ LeaveFunction("DummyRead");
+}
+
+
+
+/*
+sanitize_request
+@request: the request to clean
+
+sanitize_requests cleans all URL specific parts of a request, while
+saving the connection specific parts in order to do persistent connections.
+
+*/
+void sanitize_request(struct http_request *request)
+{
+ EnterFunction("sanitize_request");
+ /* Close the file-pointer */
+ if (request->filp!=NULL)
+ {
+ fput(request->filp);
+ request->filp = NULL;
+ }
+
+ DummyRead(request->sock,request->Headersize);
+
+ request->FileLength = 0;
+ request->Time = 0;
+ request->BytesSent = 0;
+ request->FileName[0]=0;
+ request->FileNameLength = 0;
+ request->IMS[0]=0;
+ request->Host[0]=0;
+ request->IMS_Time =0;
+ request->TimeS[0] =0;
+ request->LengthS[0] =0;
+ request->MimeType = NULL;
+ request->MimeLength = 0;
+
+ LeaveFunction("sanitize_request");
+
+}
+
+

/*

@@ -215,6 +298,7 @@
*/

static char NoPerm[] = "HTTP/1.0 403 Forbidden\r\nServer: kHTTPd 0.1.6\r\n\r\n";
+static char TimeOut[] = "HTTP/1.0 408 Request timed out\r\nServer: kHTTPd 0.1.6\r\nConnection: close\r\n\r\n";
static char TryLater[] = "HTTP/1.0 503 Service Unavailable\r\nServer: kHTTPd 0.1.6\r\nContent-Length: 15\r\n\r\nTry again later";
static char NotModified[] = "HTTP/1.0 304 Not Modified\r\nServer: kHTTPd 0.1.6\r\n\r\n";

@@ -225,6 +309,14 @@
(void)SendBuffer(sock,NoPerm,strlen(NoPerm));
LeaveFunction("Send403");
}
+
+void Send408(struct socket *sock)
+{
+ EnterFunction("Send408");
+ (void)SendBuffer(sock,TimeOut,strlen(TimeOut));
+ LeaveFunction("Send408");
+}
+

void Send304(struct socket *sock)
{
diff -urN linux-orig/net/khttpd/prototypes.h linux/net/khttpd/prototypes.h
--- linux-orig/net/khttpd/prototypes.h Mon Dec 11 13:32:10 2000
+++ linux/net/khttpd/prototypes.h Sat Jan 13 13:45:36 2001
@@ -65,9 +65,11 @@
/* misc.c */

void CleanUpRequest(struct http_request *Req);
+void sanitize_request(struct http_request *request);
int SendBuffer(struct socket *sock, const char *Buffer,const size_t Length);
int SendBuffer_async(struct socket *sock, const char *Buffer,const size_t Length);
void Send403(struct socket *sock);
+void Send408(struct socket *sock);
void Send304(struct socket *sock);
void Send50x(struct socket *sock);

diff -urN linux-orig/net/khttpd/rfc.c linux/net/khttpd/rfc.c
--- linux-orig/net/khttpd/rfc.c Mon Aug 23 10:41:25 1999
+++ linux/net/khttpd/rfc.c Sat Jan 13 18:45:28 2001
@@ -23,6 +23,34 @@
*
****************************************************************/

+/*
+ Virtual Host parser by Christoph Lameter <christoph@lameter.com>, January 10, 2001
+
+ The proc file in /proc/sys/net/khttpd/document can either be set to a single webroot or
+ can contain a specification of a pathlist of webroots. Each path is prefixed by the virtual
+ hostnames in parentheses. For example.
+
+ echo "(home.lameter.com,localhost)/a/christoph/new:(virtual3.cc.com)/home/richard:/var/www" >documentroot
+
+ would redirect requests for http://lameter.com and http://localhost to /a/christoph/new.
+ Requests for http://virtual3.cc.com will be served from /home/richard.
+ Requests for other domains will be served from /var/www.
+
+ The syntax for specifying virtual host mappings is:
+
+ <virtual-hostmap> { : <virtual_hostmap> } : <defaultpath>
+
+ where
+
+ <defaultmap> = Unix path
+ <virtual-hostmap> = ( <hostname> { , <hostname> } ) : <path>
+ <hostname> = legal DNS name of a host
+ <path> = Unix path
+
+ An additional enhancement of khttpd is that no attempt is made to open directories.
+ Instead index.html is appended to a directory to simulate classic webserver behavior.
+
+*/

#include <linux/kernel.h>

@@ -156,85 +184,26 @@


static char HeaderPart1[] = "HTTP/1.0 200 OK\r\nServer: kHTTPd/0.1.6\r\nDate: ";
-#ifdef BENCHMARK
-static char HeaderPart1b[] ="HTTP/1.0 200 OK";
-#endif
-static char HeaderPart3[] = "\r\nContent-type: ";
-static char HeaderPart5[] = "\r\nLast-modified: ";
-static char HeaderPart7[] = "\r\nContent-length: ";
-static char HeaderPart9[] = "\r\n\r\n";
+static char HeaderPart2[] = "HTTP/1.0 206 Partial Content\r\nServer: kHTTPd/0.1.6\r\nDate: ";
+static char HeaderPart3[] = "\r\nContent-Type: ";
+static char HeaderPart5[] = "\r\nLast-Modified: ";
+static char HeaderPart7[] = "\r\nContent-Length: ";
+static char HeaderPart9[] = "\r\nConnection: Keep-Alive\r\n\r\n";
+static char HeaderPart9close[] = "\r\nConnection: Close\r\n\r\n";
+static char HeaderPartPartial[] = "\r\nContent-Range: bytes %u-%u/%u";

-#ifdef BENCHMARK
-/* In BENCHMARK-mode, just send the bare essentials */
void SendHTTPHeader(struct http_request *Request)
{
struct msghdr msg;
mm_segment_t oldfs;
- struct iovec iov[9];
+ struct iovec iov[10];
int len,len2;
-
+ int cindex;

EnterFunction("SendHTTPHeader");
-
- msg.msg_name = 0;
- msg.msg_namelen = 0;
- msg.msg_iov = &iov[0];
- msg.msg_iovlen = 6;
- msg.msg_control = NULL;
- msg.msg_controllen = 0;
- msg.msg_flags = 0; /* Synchronous for now */
-
- iov[0].iov_base = HeaderPart1b;
- iov[0].iov_len = 15;
- iov[1].iov_base = HeaderPart3;
- iov[1].iov_len = 16;
- iov[2].iov_base = Request->MimeType;
- iov[2].iov_len = Request->MimeLength;
-
- iov[3].iov_base = HeaderPart7;
- iov[3].iov_len = 18;
-
-
- sprintf(Request->LengthS,"%i",Request->FileLength);
- iov[4].iov_base = Request->LengthS;
- iov[4].iov_len = strlen(Request->LengthS);
- iov[5].iov_base = HeaderPart9;
- iov[5].iov_len = 4;
-
- len2=15+16+18+iov[2].iov_len+iov[4].iov_len+4;
-
-
- len = 0;
-
-
- oldfs = get_fs(); set_fs(KERNEL_DS);
- len = sock_sendmsg(Request->sock,&msg,len2);
- set_fs(oldfs);
-

- return;
-}
-#else
-void SendHTTPHeader(struct http_request *Request)
-{
- struct msghdr msg;
- mm_segment_t oldfs;
- struct iovec iov[9];
- int len,len2;
- __kernel_size_t slen;
-
- EnterFunction("SendHTTPHeader");
-
- msg.msg_name = 0;
- msg.msg_namelen = 0;
- msg.msg_iov = &(iov[0]);
- msg.msg_iovlen = 9;
- msg.msg_control = NULL;
- msg.msg_controllen = 0;
- msg.msg_flags = 0; /* Synchronous for now */
-
- iov[0].iov_base = HeaderPart1;
- iov[0].iov_len = 45;
+ iov[0].iov_base = Request->Offset ? HeaderPart2: HeaderPart1;
+ iov[0].iov_len = strlen(iov[0].iov_base);
iov[1].iov_base = CurrentTime;
iov[1].iov_len = 29;
iov[2].iov_base = HeaderPart3;
@@ -250,12 +219,32 @@
iov[6].iov_base = HeaderPart7;
iov[6].iov_len = 18;
iov[7].iov_base = &(Request->LengthS[0]);
- slen = strlen(Request->LengthS);
- iov[7].iov_len = slen;
- iov[8].iov_base = HeaderPart9;
- iov[8].iov_len = 4;
+ iov[7].iov_len = strlen(Request->LengthS);
+
+ cindex = 8;
+ if (Request->Offset || Request->End < Request->FileLength) {
+ sprintf(Request->ContentRange,HeaderPartPartial,Request->Offset,Request->End,Request->FileLength);
+ iov[cindex].iov_base = Request->ContentRange;
+ iov[cindex].iov_len = strlen(Request->ContentRange);
+ cindex++;
+ }
+ iov[cindex].iov_base = HeaderPart9close;
+ iov[cindex].iov_len = 23;
+
+ if (Request->Persistent) {
+ iov[cindex].iov_base = HeaderPart9;
+ iov[cindex].iov_len = 28;
+ }
+
+ msg.msg_name = 0;
+ msg.msg_namelen = 0;
+ msg.msg_iov = &(iov[0]);
+ msg.msg_iovlen = cindex+1;
+ msg.msg_control = NULL;
+ msg.msg_controllen = 0;
+ msg.msg_flags = 0; /* Synchronous for now */

- len2=45+2*29+16+17+18+slen+4+iov[3].iov_len;
+ len2=0;while (cindex>=0) { len2+=iov[cindex].iov_len;cindex--; }

len = 0;

@@ -264,10 +253,8 @@
set_fs(oldfs);
LeaveFunction("SendHTTPHeader");

-
return;
}
-#endif



@@ -280,6 +267,8 @@
void ParseHeader(char *Buffer,const int length, struct http_request *Head)
{
char *Endval,*EOL,*tmp;
+ char *filename=NULL;
+ int filenamelen;

EnterFunction("ParseHeader");
Endval = Buffer + length;
@@ -288,6 +277,8 @@
tmp = strstr(Buffer,"\r\n\r\n");
if (tmp!=NULL)
Endval = tmp;
+
+ Head->Headersize = Endval - Buffer+4;


while (Buffer<Endval)
@@ -311,7 +302,6 @@

if (strncmp("GET ",Buffer,4)==0)
{
- int PrefixLen;
Buffer+=4;

tmp=strchr(Buffer,' ');
@@ -323,12 +313,9 @@
Head->HTTPVER = 10;

if (tmp>Endval) continue;
-
- strncpy(Head->FileName,sysctl_khttpd_docroot,sizeof(Head->FileName));
- PrefixLen = strlen(sysctl_khttpd_docroot);
- Head->FileNameLength = min(255,tmp-Buffer+PrefixLen);
-
- strncat(Head->FileName,Buffer,min(255-PrefixLen,tmp-Buffer));
+
+ filename=Buffer;
+ filenamelen=tmp-Buffer;

Buffer=EOL+1;
#ifdef BENCHMARK
@@ -347,6 +334,16 @@
continue;
}

+ if (strncmp("If-Range: ",Buffer,10)==0)
+ {
+ Buffer+=10;
+
+ strncpy(Head->IfRange,Buffer,min(127,EOL-Buffer-1));
+
+ Buffer=EOL+1;
+ continue;
+ }
+
if (strncmp("User-Agent: ",Buffer,12)==0)
{
Buffer+=12;
@@ -361,14 +358,96 @@
if (strncmp("Host: ",Buffer,6)==0)
{
Buffer+=6;
-
- strncpy(Head->Host,Buffer,min(127,EOL-Buffer-1));
-
+
+ Head->Host[min(126,EOL-Buffer-1)]=0;
+ strncpy(Head->Host,Buffer,min(126,EOL-Buffer-1));
Buffer=EOL+1;
continue;
}
#endif
+ if (strncmp("Connection: Keep-Alive",Buffer,22)==0)
+ {
+ Buffer+=22;
+ Buffer=EOL+1;
+ Head->Persistent = 1;
+ continue;
+ }
+
+ if (strncmp("Range: bytes=",Buffer,13)==0)
+ {
+ Buffer+=13;
+ if (*Buffer!='-') Head->Offset = simple_strtoul(Buffer,&Buffer,10);
+ if (*Buffer == '-') {
+ Buffer++;
+ Head->End = simple_strtoul(Buffer,NULL,10);
+ } else Head->Offset=0;
+ Buffer=EOL+1;
+ continue;
+ }
+
Buffer = EOL+1; /* Skip line */
+ }
+ if (filename) {
+
+ char PrefixLen;
+
+ if (sysctl_khttpd_docroot[0]=='(') {
+
+ char *p=sysctl_khttpd_docroot;
+ char *q;
+
+ while (*p=='(') {
+ do {
+ p++;
+ q=p; /* Mark position of virtual hostname */
+
+ while (*p && *p!=')' && *p!=',') p++; /* Find the end of the hostname */
+
+ if (*p==0) { printk(KERN_ERR ") missing in virtual host string.\n");return; }
+
+ if (strnicmp(Head->Host,q,p-q)==0) {
+ /* virtual hostname match */
+ while (*p && *p!=')') p++; /* Skip to the end of the vhostname list */
+ if (*p == 0) printk(KERN_ERR "path missing for virtual host");
+
+ p++;
+ goto rootfound;
+ }
+ } while (*p==',');
+
+ if (*p==')') { /* at end of virtual host names need to skip the webroot since nothing matched */
+
+ while (*p && *p!=':') p++;
+ if (*p==0) { printk(KERN_ERR "closing : of virtual host specification missing.\n");return; }
+ p++;
+ }
+
+ }
+ rootfound:
+ if (*p==0) { printk(KERN_ERR "Error in virtual host specification.\n");return; }
+
+ /* p is pointing to matching webroot for this virtual host or the default root */
+ q=p;while (*p && *p!=':') p++; /* Find the end of the pathname */
+ PrefixLen=p-q;
+ strncpy(Head->FileName,q,PrefixLen);
+
+ } else {
+
+ strncpy(Head->FileName,sysctl_khttpd_docroot,sizeof(Head->FileName));
+ PrefixLen = strlen(sysctl_khttpd_docroot);
+
+ }
+
+ Head->FileNameLength = min(255,filenamelen+PrefixLen);
+ strncat(Head->FileName,filename,min(255-PrefixLen,filenamelen));
+
+ if (Head->FileName[Head->FileNameLength-1]=='/' && Head->FileNameLength<255-10) {
+
+ /* A directory! khttpd will not be able to successfully open it. But it might be able to access index.html */
+ memcpy(Head->FileName+Head->FileNameLength,"index.html",10);
+ Head->FileNameLength+=10;
+ }
+ Head->FileName[Head->FileNameLength]=0;
}
LeaveFunction("ParseHeader");
}
diff -urN linux-orig/net/khttpd/structure.h linux/net/khttpd/structure.h
--- linux-orig/net/khttpd/structure.h Mon Dec 11 13:32:10 2000
+++ linux/net/khttpd/structure.h Sat Jan 13 13:44:59 2001
@@ -15,6 +15,11 @@
/* Network and File data */
struct socket *sock;
struct file *filp;
+
+ /* Info for persistent connections / timeouts */
+ int ReqCount; /* Number of requests served already */
+ int Persistent; /* 1 if the socket needs to remain open */
+ unsigned long LastActive; /* Last active, in absolute jiffies */

/* Raw data about the file */

@@ -30,10 +35,15 @@
/* HTTP request information */
char FileName[256]; /* The requested filename */
int FileNameLength; /* The length of the string representing the filename */
- char Agent[128]; /* The agent-string of the remote browser */
char IMS[128]; /* If-modified-since time, rfc string format */
char Host[128]; /* Value given by the Host: header */
+ char Agent[128];
int HTTPVER; /* HTTP-version; 9 for 0.9, 10 for 1.0 and above */
+ int Headersize; /* Size of the request in bytes */
+ unsigned long Offset; /* If !=0 then a range request has been parsed. */
+ unsigned long End; /* End of Range if specified */
+ char IfRange[200]; /* IfRange time, rfc string format */
+ char ContentRange[50]; /* HTTP header piece for ranges */


/* Derived date from the above fields */
diff -urN linux-orig/net/khttpd/sysctl.c linux/net/khttpd/sysctl.c
--- linux-orig/net/khttpd/sysctl.c Mon Aug 23 13:44:03 1999
+++ linux/net/khttpd/sysctl.c Fri Jan 12 21:19:55 2001
@@ -63,6 +63,7 @@
int sysctl_khttpd_sloppymime= 0;
int sysctl_khttpd_threads = 2;
int sysctl_khttpd_maxconnect = 1000;
+int sysctl_khttpd_timeout = 20;


static struct ctl_table_header *khttpd_table_header;
diff -urN linux-orig/net/khttpd/sysctl.h linux/net/khttpd/sysctl.h
--- linux-orig/net/khttpd/sysctl.h Wed Aug 18 09:45:10 1999
+++ linux/net/khttpd/sysctl.h Fri Jan 12 21:19:55 2001
@@ -13,5 +13,6 @@
extern int sysctl_khttpd_sloppymime;
extern int sysctl_khttpd_threads;
extern int sysctl_khttpd_maxconnect;
+extern int sysctl_khttpd_timeout;

#endif
diff -urN linux-orig/net/khttpd/waitheaders.c linux/net/khttpd/waitheaders.c
--- linux-orig/net/khttpd/waitheaders.c Sun Apr 2 15:53:28 2000
+++ linux/net/khttpd/waitheaders.c Sat Jan 13 18:01:06 2001
@@ -44,6 +44,7 @@

#include "structure.h"
#include "prototypes.h"
+#include "sysctl.h"

static char *Buffer[CONFIG_KHTTPD_NUMCPU];

@@ -57,8 +58,12 @@
struct sock *sk;
int count = 0;

+ unsigned long timeout;
+
EnterFunction("WaitForHeaders");

+ timeout = jiffies - sysctl_khttpd_timeout * HZ;
+
CurrentRequest = threadinfo[CPUNR].WaitForHeaderQueue;

Prev = &(threadinfo[CPUNR].WaitForHeaderQueue);
@@ -94,6 +99,7 @@
{
struct http_request *Next;

+ CurrentRequest->LastActive = jiffies;


/* Decode header */
@@ -127,7 +133,43 @@
CurrentRequest = Next;
continue;

- }
+ } else { /* No data */
+ if ( CurrentRequest->LastActive < timeout ) {
+ struct http_request *Next;
+
+ /* Timed out session.
+ *
+ * There are 2 possibilities here:
+ * 1) It is a "fresh" connection; this is tricky and should
+ * be left to userspace
+ * 2) It is a "Keep-alive" connection; RFC 2616 is clear on this and
+ * we MAY close it with a 408 message.
+ */
+
+ /* Remove from WaitForHeaderQueue */
+
+ Next= CurrentRequest->Next;
+
+ *Prev = Next;
+ count++;
+
+
+ if (CurrentRequest->ReqCount==0)
+ {
+ CurrentRequest->Next = threadinfo[CPUNR].UserspaceQueue;
+ threadinfo[CPUNR].UserspaceQueue = CurrentRequest;
+ } else
+ {
+ Send408(CurrentRequest->sock);
+ CurrentRequest->Next = threadinfo[CPUNR].LoggingQueue;
+ threadinfo[CPUNR].LoggingQueue = CurrentRequest;
+ CurrentRequest->Persistent=0; /* We don't want to continue */
+ }
+
+ CurrentRequest = Next;
+ continue;
+ }
+ }


Prev = &(CurrentRequest->Next);
@@ -243,15 +285,31 @@
Request->FileLength = (int)Request->filp->f_dentry->d_inode->i_size;
Request->Time = Request->filp->f_dentry->d_inode->i_mtime;
Request->IMS_Time = mimeTime_to_UnixTime(Request->IMS);
- sprintf(Request->LengthS,"%i",Request->FileLength);
+
+ if (Request->End ==0) Request->End = Request->FileLength;
+
+ if (Request->Offset >= Request->FileLength)
+ { /* Bad Range request. Fall back to transferring whole page */
+ Request->Offset=0;
+ }
+
time_Unix2RFC(min(Request->Time,CurrentTime_i),Request->TimeS);
/* The min() is required by rfc1945, section 10.10:
It is not allowed to send a filetime in the future */
+
+ if (Request->Offset && mimeTime_to_UnixTime(Request->IfRange)>Request->Time)
+ { /* Modified since last piece was transferred. Fall back to beginning */
+ Request->Offset=0;
+ }
+
+ sprintf(Request->LengthS,"%i",Request->End-Request->Offset);

if (Request->IMS_Time>Request->Time)
{ /* Not modified since last time */
Send304(Request->sock);
Request->FileLength=0;
+ Request->End=0;
+ Request->Offset=0;
}
else /* Normal Case */
{
-
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