/*
Read the output data from the CGI script and return it to the client. This is called by the MPR in response to
I/O events from the CGI process for stdout/stderr data from the CGI script and for EOF from the CGI's stdin.
IMPORTANT: This event runs on the connection's dispatcher. (ie. single threaded and safe)
*/
static void cgiCallback(MprCmd *cmd, int channel, void *data)
{
HttpConn *conn;
Cgi *cgi;
int suspended;
if ((cgi = data) == 0) {
return;
}
if ((conn = cgi->conn) == 0) {
return;
}
conn->lastActivity = conn->http->now;
switch (channel) {
case MPR_CMD_STDIN:
/* Stdin can absorb more data */
httpResumeQueue(cgi->writeq);
break;
case MPR_CMD_STDOUT:
case MPR_CMD_STDERR:
readFromCgi(cgi, channel);
break;
default:
/* Child death notification */
if (cmd->status != 0) {
httpError(cgi->conn, HTTP_CODE_BAD_GATEWAY, "Bad CGI process termination");
}
break;
}
if (cgi->location) {
httpRedirect(conn, conn->tx->status, cgi->location);
}
if (cmd->complete || cgi->location) {
cgi->location = 0;
httpFinalize(conn);
mprCreateEvent(conn->dispatcher, "cgiComplete", 0, httpIOEvent, conn, 0);
return;
}
suspended = httpIsQueueSuspended(conn->writeq);
assert(!suspended || conn->tx->writeBlocked);
mprEnableCmdOutputEvents(cmd, !suspended);
mprCreateEvent(conn->dispatcher, "cgi", 0, httpIOEvent, conn, 0);
}
/*
Read the output data from the CGI script and return it to the client. This is called by the MPR in response to
I/O events from the CGI process for stdout/stderr data from the CGI script and for EOF from the CGI's stdin.
IMPORTANT: This event runs on the connection's dispatcher. (ie. single threaded and safe)
*/
static void cgiCallback(MprCmd *cmd, int channel, void *data)
{
HttpConn *conn;
Cgi *cgi;
int suspended;
if ((cgi = data) == 0) {
return;
}
if ((conn = cgi->conn) == 0) {
return;
}
conn->lastActivity = conn->http->now;
mprTrace(6, "CGI: cgiCallback event channel %d", channel);
switch (channel) {
case MPR_CMD_STDIN:
/* Stdin can absorb more data */
httpResumeQueue(cgi->writeq);
break;
case MPR_CMD_STDOUT:
case MPR_CMD_STDERR:
readFromCgi(cgi, channel);
break;
default:
/* Child death notification */
break;
}
if (cgi->location) {
httpRedirect(conn, conn->tx->status, cgi->location);
}
if (cmd->complete || cgi->location) {
cgi->location = 0;
httpFinalize(conn);
mprCreateEvent(conn->dispatcher, "cgiComplete", 0, httpIOEvent, conn, 0);
return;
}
suspended = httpIsQueueSuspended(conn->writeq);
mprTrace(6, "CGI: %s CGI: cgiCallback. Conn->writeq %d", suspended ? "DISABLE" : "ENABLE", conn->writeq->count);
assert(!suspended || conn->tx->writeBlocked);
mprEnableCmdOutputEvents(cmd, !suspended);
mprCreateEvent(conn->dispatcher, "cgi", 0, httpIOEvent, conn, 0);
}