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/* www.c, liboop, copyright 1999 Dan Egnor
This is free software; you can redistribute it and/or modify it under the
terms of the GNU Lesser General Public License, version 2.1 or later.
See the file COPYING for details. */
#ifdef HAVE_WWW
/* Yecch: the libwww header files need this. */
#define HAVE_CONFIG_H
#undef PACKAGE
#undef VERSION
#include <stdarg.h> /* Needed for our cut-down libwww headers. */
#include "oop.h"
#include "HTEvent.h"
#include "HTMemory.h"
#include "oop-www.h"
#include <assert.h>
struct event {
HTEvent *event;
struct timeval time;
};
typedef struct event descriptor[HTEvent_TYPES];
static int num = 0,size = 0;
static descriptor *array = NULL;
static oop_source *oop = NULL;
static struct event *get_event(SOCKET sock,HTEventType type) {
assert(sock < size && "invalid file descriptor");
return &array[sock][HTEvent_INDEX(type)];
}
static void *on_time(oop_source *s,struct timeval tv,void *x) {
struct event *event;
SOCKET sock = (int) x;
int j;
for (j = 0; j < HTEvent_TYPES; ++j) {
event = &array[sock][j];
if (NULL != event->event && 0 <= event->event->millis
&& tv.tv_sec == event->time.tv_sec
&& tv.tv_usec == event->time.tv_usec)
break;
}
assert(j < HTEvent_TYPES);
event->event->cbf(sock,event->event->param,HTEvent_TIMEOUT);
return OOP_CONTINUE;
}
static void set_timer(struct event *event) {
if (0 <= event->event->millis) {
gettimeofday(&event->time,NULL);
event->time.tv_sec += event->event->millis / 1000;
event->time.tv_usec += event->event->millis % 1000;
if (event->time.tv_usec > 1000000) {
event->time.tv_usec -= 1000000;
++event->time.tv_sec;
}
oop->on_time(oop,event->time,on_time,event);
}
}
static void *on_fd(oop_source *s,int fd,oop_event type,void *x) {
HTEventType www_type;
struct event *event;
switch (type) {
case OOP_READ:
www_type = HTEvent_READ;
break;
case OOP_WRITE:
www_type = HTEvent_WRITE;
break;
default:
assert(0);
}
event = get_event(fd,www_type);
if (0 <= event->event->millis) {
oop->cancel_time(oop,event->time,on_time,event);
set_timer(event);
}
event->event->cbf(fd,event->event->param,www_type);
return OOP_CONTINUE;
}
static void dereg(SOCKET sock,HTEventType www_type,oop_event oop_type) {
struct event *event = get_event(sock,www_type);
assert(sock < size && "invalid file descriptor");
if (NULL != event->event) {
--num;
oop->cancel_fd(oop,sock,oop_type);
if (0 <= event->event->millis)
oop->cancel_time(oop,event->time,on_time,event);
event->event = NULL;
}
}
static int reg(SOCKET sock,HTEventType type,HTEvent *www_event) {
oop_event oop_type;
struct event *event;
switch (HTEvent_INDEX(type)) {
case HTEvent_INDEX(HTEvent_READ):
oop_type = OOP_READ;
break;
case HTEvent_INDEX(HTEvent_WRITE):
oop_type = OOP_WRITE;
break;
case HTEvent_INDEX(HTEvent_OOB):
/* XXX: we don't handle this; does anything use it? */
return HT_ERROR;
default:
assert(0 && "invalid HTEvent type specified");
}
if (sock >= size) {
int newsize = size ? (2*size) : 16;
descriptor *newarray = oop_malloc(sizeof(*newarray) * newsize);
int i,j;
if (NULL == newarray) return HT_ERROR;
memcpy(newarray,array,sizeof(*newarray) * size);
for (i = size; i < newsize; ++i)
for (j = 0; j < HTEvent_TYPES; ++j) {
newarray[i][j].event = NULL;
}
array = newarray;
size = newsize;
}
dereg(sock,type,oop_type);
event = get_event(sock,type);
event->event = www_event;
oop->on_fd(oop,sock,oop_type,on_fd,NULL);
set_timer(event);
++num;
return HT_OK;
}
static int unreg(SOCKET sock,HTEventType type) {
oop_event oop_type;
switch (HTEvent_INDEX(type)) {
case HTEvent_INDEX(HTEvent_READ):
oop_type = OOP_READ;
break;
case HTEvent_INDEX(HTEvent_WRITE):
oop_type = OOP_WRITE;
break;
case HTEvent_INDEX(HTEvent_OOB):
/* XXX: we don't handle this; does anything use it? */
return HT_ERROR;
default:
assert(0 && "invalid HTEvent type specified");
}
dereg(sock,type,oop_type);
return HT_OK;
}
void oop_www_register(oop_source *source) {
oop = source;
HTEvent_setRegisterCallback(reg);
HTEvent_setUnregisterCallback(unreg);
}
void oop_www_cancel() {
assert(0 == num && "cannot unregister with pending libwww events");
HTEvent_setRegisterCallback(NULL);
HTEvent_setUnregisterCallback(NULL);
oop = NULL;
}
void oop_www_memory() {
oop_malloc = HTMemory_malloc;
oop_realloc = HTMemory_realloc;
oop_free = HTMemory_free;
}
#endif
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