/* HTMIMERq.c
** MIME ENTITY HEADERS GENERATION
**
** (c) COPYRIGHT MIT 1995.
** Please first read the full copyright statement in the file COPYRIGH.
** @(#) $Id: HTMIMERq.c,v 2.26 1996/08/19 18:30:45 frystyk Exp $
**
** This module implements the output stream for MIME used for sending
** requests with a entity body to HTTP, NEWS, etc. or for generating
** responses
**
** History:
** Jan 95 HFN Written
*/
/* Library Includes */
#include "sysdep.h"
#include "WWWUtil.h"
#include "WWWCore.h"
#include "HTAncMan.h"
#include "HTNetMan.h"
#include "HTReqMan.h"
#include "HTHeader.h"
#include "HTMIMERq.h" /* Implements */
#define PUTC(c) (*me->target->isa->put_character)(me->target, c)
#define PUTS(s) (*me->target->isa->put_string)(me->target, s)
#define PUTBLOCK(b, l) (*me->target->isa->put_block)(me->target, b, l)
struct _HTStream {
const HTStreamClass * isa;
HTStream * target;
HTRequest * request;
BOOL put_fix;
BOOL endHeader;
BOOL transparent;
};
#define HT_MAX_WAIT 6 /* Max number of secs to wait for PUT */
/* ------------------------------------------------------------------------- */
/* MIME Output Request Stream */
/* ------------------------------------------------------------------------- */
/* MIMEMakeRequest
** ---------------
** Generates the BODY parts of a MIME message.
*/
PRIVATE int MIMEMakeRequest (HTStream * me, HTRequest * request)
{
char crlf[3];
char linebuf[256]; /* @@@ */
HTParentAnchor * entity = HTRequest_entityAnchor(request);
HTEnHd EntityMask = HTRequest_enHd(request);
*crlf = CR; *(crlf+1) = LF; *(crlf+2) = '\0';
if (EntityMask & HT_E_ALLOW) {
/* @@@@@@@@@@ */
}
if (EntityMask & HT_E_CONTENT_ENCODING && entity->content_encoding){
BOOL first = YES;
HTList * cur = entity->content_encoding;
HTEncoding pres;
while ((pres = (HTEncoding) HTList_nextObject(cur))) {
if (first) {
PUTS("Content-Encoding: ");
first = NO;
} else
PUTC(',');
PUTS(HTAtom_name(pres));
}
if (!first) PUTBLOCK(crlf, 2);
}
if (EntityMask & HT_E_CONTENT_LANGUAGE && entity->content_language){
BOOL first = YES;
HTList * cur = entity->content_language;
HTLanguage pres;
while ((pres = (HTLanguage) HTList_nextObject(cur))) {
if (first) {
PUTS("Content-Language: ");
first = NO;
} else
PUTC(',');
PUTS(HTAtom_name(pres));
}
if (!first) PUTBLOCK(crlf, 2);
}
if (EntityMask & HT_E_CONTENT_LENGTH) {
if (entity->content_length >= 0) {
sprintf(linebuf, "Content-Length: %ld%c%c",
entity->content_length, CR, LF);
PUTBLOCK(linebuf, (int) strlen(linebuf));
} else {
HTEncoding chunked = HTAtom_for("chunked");
HTAnchor_setTransfer(entity, chunked);
}
}
if (EntityMask & HT_E_CTE && entity->transfer) {
HTEncoding transfer = HTAnchor_transfer(entity);
if (!HTFormat_isUnityTransfer(transfer)) {
sprintf(linebuf, "Transfer-Encoding: %s%c%c",
HTAtom_name(transfer), CR, LF);
PUTBLOCK(linebuf, (int) strlen(linebuf));
}
}
if (EntityMask & HT_E_CONTENT_TYPE && entity->content_type &&
entity->content_type != WWW_UNKNOWN) {
HTAssocList * parameters = HTAnchor_formatParam(entity);
/* Output the content type */
PUTS("Content-Type: ");
PUTS(HTAtom_name(entity->content_type));
/* Add all parameters */
if (parameters) {
HTAssoc * pres;
while ((pres = (HTAssoc *) HTAssocList_nextObject(parameters))) {
PUTS(";");
PUTS(HTAssoc_name(pres));
PUTS("=");
PUTS(HTAssoc_value(pres));
}
}
PUTBLOCK(crlf, 2);
#if 0
if (entity->charset) {
strcat(linebuf, "; charset=");
strcat(linebuf, HTAtom_name(entity->charset));
}
if (entity->level) {
strcat(linebuf, "; level=");
strcat(linebuf, HTAtom_name(entity->level));
}
len = strlen(linebuf);
*(linebuf+len) = CR;
*(linebuf+len+1) = LF;
*(linebuf+len+2) = '\0';
PUTBLOCK(linebuf, (int) len+2);
#endif
}
if (EntityMask & HT_E_DERIVED_FROM && entity->derived_from) {
sprintf(linebuf, "Derived-From: %s%c%c", entity->derived_from,
CR, LF);
PUTBLOCK(linebuf, (int) strlen(linebuf));
}
if (EntityMask & HT_E_EXPIRES) {
if (entity->expires != -1) {
sprintf(linebuf, "Expires: %s%c%c",
HTDateTimeStr(&entity->expires, NO), CR,LF);
PUTBLOCK(linebuf, (int) strlen(linebuf));
}
}
if (EntityMask & HT_E_LAST_MODIFIED) {
if (entity->last_modified != -1) {
sprintf(linebuf, "Last-Modified: %s%c%c",
HTDateTimeStr(&entity->last_modified, NO), CR,LF);
PUTBLOCK(linebuf, (int) strlen(linebuf));
}
}
if (EntityMask & HT_E_LINK) { /* @@@@@@@@@@ */
}
if (EntityMask & HT_E_TITLE) { /* @@@@@@@@@@ */
}
if (EntityMask & HT_E_URI) { /* @@@@@@@@@@ */
}
if (EntityMask & HT_E_VERSION && entity->version) {
sprintf(linebuf, "Version: %s%c%c", entity->version, CR, LF);
PUTBLOCK(linebuf, (int) strlen(linebuf));
}
if (me->endHeader) {
sprintf(linebuf, "%c%c", CR, LF); /* Blank line means "end" */
PUTBLOCK(linebuf, (int) strlen(linebuf));
}
/*
** Now make sure that the body has the right format
*/
/* Handle any Transfer encoding */
{
HTEncoding transfer = HTAnchor_transfer(entity);
if (!HTFormat_isUnityTransfer(transfer)) {
if (STREAM_TRACE) HTTrace("Building.... C-T-E stack\n");
me->target = HTTransferCodingStack(transfer, me->target,
request, NULL, YES);
}
}
/* Handle any Content Encoding */
{
HTList * cc = HTAnchor_encoding(entity);
if (cc) {
if (STREAM_TRACE) HTTrace("Building.... C-E stack\n");
me->target = HTContentDecodingStack(cc, me->target, request, NULL);
}
}
if (PROT_TRACE) HTTrace("MIME........ Generating Entity Headers\n");
return HT_OK;
}
PRIVATE int MIMERequest_put_block (HTStream * me, const char * b, int l)
{
HTNet * net = HTRequest_net(me->request);
if (me->transparent) {
if (me->put_fix) {
HTNet * net = HTRequest_net(me->request);
HTEvent_unregister(net->sockfd, FD_READ);
me->put_fix = NO;
}
} else {
MIMEMakeRequest(me, me->request);
if (HTRequest_isDestination(me->request)) {
HTNet * net = HTRequest_net(me->request);
(*me->target->isa->flush)(me->target);
HTNet_setBytesWritten(net, 0);
}
me->transparent = YES;
/*
** If we know we are talking to an HTTP 1.1 server and we are sending
** an entity body then wait until we have received a 100 response
*/
if (HTMethod_hasEntity(HTRequest_method(me->request))) {
HTHost * host = HTNet_host(net);
char * class = HTHost_class(host);
if (class && !strcmp(class, "http")) {
/*
** If this is a HTTP/1.1 or later then wait for 100 code. If
** it is a HTTP/1.0 server then wait a bit and hope the best.
*/
if (HTHost_version(host) >= 3) {
if (STREAM_TRACE)
HTTrace("MIME........ Waiting for 100...\n");
(*me->target->isa->flush)(me->target);
return HT_PAUSE;
} else {
HTNet * net = HTRequest_net(me->request);
int zzzz = HTRequest_retrys(me->request);
zzzz = zzzz ? zzzz * 2 : 2;
if (zzzz > HT_MAX_WAIT) zzzz = HT_MAX_WAIT;
(*me->target->isa->flush)(me->target);
if (STREAM_TRACE) HTTrace("MIME........ Sleeping for %d secs\n", zzzz);
HTEvent_register(net->sockfd, me->request,
(SockOps) FD_READ | FD_WRITE,
net->cbf, net->priority);
SLEEP(zzzz);
me->put_fix = YES;
return HT_WOULD_BLOCK;
}
}
}
}
/* Check if we have written it all */
if (b) {
HTParentAnchor * entity = HTRequest_entityAnchor(me->request);
long cl = HTAnchor_length(entity);
return (cl>=0 && HTNet_bytesWritten(net) >= cl) ?
HT_LOADED : PUTBLOCK(b, l);
}
return HT_OK;
}
PRIVATE int MIMERequest_put_character (HTStream * me, char c)
{
return MIMERequest_put_block(me, &c, 1);
}
PRIVATE int MIMERequest_put_string (HTStream * me, const char * s)
{
return MIMERequest_put_block(me, s, strlen(s));
}
/*
** Flushes header but doesn't free stream object
*/
PRIVATE int MIMERequest_flush (HTStream * me)
{
int status = MIMERequest_put_block(me, NULL, 0);
return status==HT_OK ? (*me->target->isa->flush)(me->target) : status;
}
/*
** Flushes data and frees stream object
*/
PRIVATE int MIMERequest_free (HTStream * me)
{
int status = MIMERequest_flush(me);
if (status != HT_WOULD_BLOCK) {
if ((status = (*me->target->isa->_free)(me->target)) == HT_WOULD_BLOCK)
return HT_WOULD_BLOCK;
HT_FREE(me);
}
return status;
}
PRIVATE int MIMERequest_abort (HTStream * me, HTList * e)
{
if (me->target) (*me->target->isa->abort)(me->target, e);
HT_FREE(me);
if (PROT_TRACE) HTTrace("MIMERequest. ABORTING...\n");
return HT_ERROR;
}
/* MIMERequest Stream
** -----------------
*/
PRIVATE const HTStreamClass MIMERequestClass =
{
"MIMERequest",
MIMERequest_flush,
MIMERequest_free,
MIMERequest_abort,
MIMERequest_put_character,
MIMERequest_put_string,
MIMERequest_put_block
};
PUBLIC HTStream * HTMIMERequest_new (HTRequest * request, HTStream * target,
BOOL endHeader)
{
HTStream * me;
if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
HT_OUTOFMEM("HTMIMERequest_new");
me->isa = &MIMERequestClass;
me->target = target;
me->request = request;
me->endHeader = endHeader;
me->transparent = NO;
return me;
}
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