void
Process_upnphttp(struct upnphttp * h)
{
char * h_tmp;
char buf[2048];
int n;
if(!h)
return;
switch(h->state)
{
case EWaitingForHttpRequest:
#ifdef ENABLE_HTTPS
if(h->ssl) {
n = SSL_read(h->ssl, buf, sizeof(buf));
} else {
n = recv(h->socket, buf, sizeof(buf), 0);
}
#else
n = recv(h->socket, buf, sizeof(buf), 0);
#endif
if(n<0)
{
#ifdef ENABLE_HTTPS
if(h->ssl) {
int err;
err = SSL_get_error(h->ssl, n);
if(err != SSL_ERROR_WANT_READ && err != SSL_ERROR_WANT_WRITE)
{
syslog(LOG_ERR, "SSL_read() failed");
syslogsslerr();
h->state = EToDelete;
}
} else {
#endif
if(errno != EAGAIN &&
errno != EWOULDBLOCK &&
errno != EINTR)
{
syslog(LOG_ERR, "recv (state0): %m");
h->state = EToDelete;
}
/* if errno is EAGAIN, EWOULDBLOCK or EINTR, try again later */
#ifdef ENABLE_HTTPS
}
#endif
}
else if(n==0)
{
syslog(LOG_WARNING, "HTTP Connection closed unexpectedly");
h->state = EToDelete;
}
else
{
const char * endheaders;
/* if 1st arg of realloc() is null,
* realloc behaves the same as malloc() */
h_tmp = (char *)realloc(h->req_buf, n + h->req_buflen + 1);
if (h_tmp == NULL)
{
syslog(LOG_WARNING, "Unable to allocate new memory for h->req_buf)");
h->state = EToDelete;
}
else
{
h->req_buf = h_tmp;
memcpy(h->req_buf + h->req_buflen, buf, n);
h->req_buflen += n;
h->req_buf[h->req_buflen] = '\0';
}
/* search for the string "\r\n\r\n" */
endheaders = findendheaders(h->req_buf, h->req_buflen);
if(endheaders)
{
/* at this point, the request buffer (h->req_buf)
* is guaranteed to contain the \r\n\r\n character sequence */
h->req_contentoff = endheaders - h->req_buf + 4;
ProcessHttpQuery_upnphttp(h);
}
}
break;
case EWaitingForHttpContent:
#ifdef ENABLE_HTTPS
if(h->ssl) {
n = SSL_read(h->ssl, buf, sizeof(buf));
} else {
n = recv(h->socket, buf, sizeof(buf), 0);
}
#else
n = recv(h->socket, buf, sizeof(buf), 0);
#endif
if(n<0)
{
#ifdef ENABLE_HTTPS
if(h->ssl) {
int err;
err = SSL_get_error(h->ssl, n);
if(err != SSL_ERROR_WANT_READ && err != SSL_ERROR_WANT_WRITE)
{
syslog(LOG_ERR, "SSL_read() failed");
syslogsslerr();
h->state = EToDelete;
}
} else {
#endif
if(errno != EAGAIN &&
errno != EWOULDBLOCK &&
errno != EINTR)
{
syslog(LOG_ERR, "recv (state1): %m");
h->state = EToDelete;
}
/* if errno is EAGAIN, EWOULDBLOCK or EINTR, try again later */
#ifdef ENABLE_HTTPS
}
#endif
}
else if(n==0)
{
syslog(LOG_WARNING, "HTTP Connection closed inexpectedly");
h->state = EToDelete;
}
else
{
void * tmp = realloc(h->req_buf, n + h->req_buflen);
if(!tmp)
{
syslog(LOG_ERR, "memory allocation error %m");
h->state = EToDelete;
}
else
{
h->req_buf = tmp;
memcpy(h->req_buf + h->req_buflen, buf, n);
h->req_buflen += n;
if((h->req_buflen - h->req_contentoff) >= h->req_contentlen)
{
ProcessHTTPPOST_upnphttp(h);
}
}
}
break;
case ESendingContinue:
if(SendResp_upnphttp(h))
h->state = EWaitingForHttpContent;
break;
case ESendingAndClosing:
SendRespAndClose_upnphttp(h);
break;
default:
syslog(LOG_WARNING, "Unexpected state: %d", h->state);
}
}
void
Process_upnphttp(struct upnphttp * h)
{
char buf[2048];
int n;
if(!h)
return;
switch(h->state)
{
case 0:
n = recv(h->socket, buf, 2048, 0);
if(n<0)
{
syslog(LOG_ERR, "recv (state0): %m");
h->state = 100;
}
else if(n==0)
{
syslog(LOG_WARNING, "HTTP Connection closed inexpectedly");
h->state = 100;
}
else
{
const char * endheaders;
/* if 1st arg of realloc() is null,
* realloc behaves the same as malloc() */
h->req_buf = (char *)realloc(h->req_buf, n + h->req_buflen + 1);
memcpy(h->req_buf + h->req_buflen, buf, n);
h->req_buflen += n;
h->req_buf[h->req_buflen] = '\0';
/* search for the string "\r\n\r\n" */
endheaders = findendheaders(h->req_buf, h->req_buflen);
if(endheaders)
{
h->req_contentoff = endheaders - h->req_buf + 4;
ProcessHttpQuery_upnphttp(h);
}
}
break;
case 1:
n = recv(h->socket, buf, 2048, 0);
if(n<0)
{
syslog(LOG_ERR, "recv (state1): %m");
h->state = 100;
}
else if(n==0)
{
syslog(LOG_WARNING, "HTTP Connection closed inexpectedly");
h->state = 100;
}
else
{
/*fwrite(buf, 1, n, stdout);*/ /* debug */
h->req_buf = (char *)realloc(h->req_buf, n + h->req_buflen);
memcpy(h->req_buf + h->req_buflen, buf, n);
h->req_buflen += n;
if((h->req_buflen - h->req_contentoff) >= h->req_contentlen)
{
ProcessHTTPPOST_upnphttp(h);
}
}
break;
default:
syslog(LOG_WARNING, "Unexpected state: %d", h->state);
}
}