static void browserToCgiService(HttpQueue *q)
{
HttpConn *conn;
HttpPacket *packet;
Cgi *cgi;
MprCmd *cmd;
MprBuf *buf;
ssize rc, len;
int err;
if ((cgi = q->queueData) == 0) {
return;
}
assert(q == cgi->writeq);
cmd = cgi->cmd;
assert(cmd);
conn = cgi->conn;
for (packet = httpGetPacket(q); packet; packet = httpGetPacket(q)) {
if ((buf = packet->content) == 0) {
/* End packet */
continue;
}
len = mprGetBufLength(buf);
rc = mprWriteCmd(cmd, MPR_CMD_STDIN, mprGetBufStart(buf), len);
if (rc < 0) {
err = mprGetError();
if (err == EINTR) {
continue;
} else if (err == EAGAIN || err == EWOULDBLOCK) {
httpPutBackPacket(q, packet);
break;
}
mprLog(2, "CGI: write to gateway failed for %d bytes, rc %d, errno %d", len, rc, mprGetOsError());
mprCloseCmdFd(cmd, MPR_CMD_STDIN);
httpDiscardQueueData(q, 1);
httpError(conn, HTTP_CODE_BAD_GATEWAY, "Cannot write body data to CGI gateway");
break;
}
mprTrace(6, "CGI: browserToCgiService %d/%d, qmax %d", rc, len, q->max);
mprAdjustBufStart(buf, rc);
if (mprGetBufLength(buf) > 0) {
httpPutBackPacket(q, packet);
break;
}
}
if (q->count > 0) {
/* Wait for writable event so cgiCallback can recall this routine */
mprEnableCmdEvents(cmd, MPR_CMD_STDIN);
} else if (conn->rx->eof) {
mprCloseCmdFd(cmd, MPR_CMD_STDIN);
} else {
mprDisableCmdEvents(cmd, MPR_CMD_STDIN);
}
}
/*
Default callback routine for the mprRunCmd routines. Uses may supply their own callback instead of this routine.
The callback is run whenever there is I/O to read/write to the CGI gateway.
*/
static void defaultCmdCallback(MprCmd *cmd, int channel, void *data)
{
MprBuf *buf;
ssize len, space;
int errCode;
/*
Note: stdin, stdout and stderr are named from the client's perspective
*/
buf = 0;
switch (channel) {
case MPR_CMD_STDIN:
return;
case MPR_CMD_STDOUT:
buf = cmd->stdoutBuf;
break;
case MPR_CMD_STDERR:
buf = cmd->stderrBuf;
break;
default:
/* Child death notification */
return;
}
/*
Read and aggregate the result into a single string
*/
space = mprGetBufSpace(buf);
if (space < (ME_BUFSIZE / 4)) {
if (mprGrowBuf(buf, ME_BUFSIZE) < 0) {
mprCloseCmdFd(cmd, channel);
return;
}
space = mprGetBufSpace(buf);
}
len = mprReadCmd(cmd, channel, mprGetBufEnd(buf), space);
errCode = mprGetError();
if (len <= 0) {
if (len == 0 || (len < 0 && !(errCode == EAGAIN || errCode == EWOULDBLOCK))) {
mprCloseCmdFd(cmd, channel);
return;
}
} else {
mprAdjustBufEnd(buf, len);
}
mprAddNullToBuf(buf);
mprEnableCmdEvents(cmd, channel);
}
