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/*
* Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "got_compat.h"
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <errno.h>
#include <event.h>
#include <imsg.h>
#include <limits.h>
#include <poll.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "got_error.h"
#include "got_object.h"
#include "got_path.h"
#include "got_lib_poll.h"
#include "gotd.h"
const struct got_error *
gotd_imsg_recv_error(uint32_t *client_id, struct imsg *imsg)
{
struct gotd_imsg_error ierr;
size_t datalen;
datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
if (datalen != sizeof(ierr))
return got_error(GOT_ERR_PRIVSEP_LEN);
memcpy(&ierr, imsg->data, sizeof(ierr));
if (client_id)
*client_id = ierr.client_id;
if (ierr.code == GOT_ERR_ERRNO)
errno = ierr.errno_code;
return got_error_msg(ierr.code, ierr.msg);
}
const struct got_error *
gotd_imsg_flush(struct imsgbuf *ibuf)
{
const struct got_error *err = NULL;
while (imsgbuf_queuelen(ibuf) > 0) {
err = got_poll_fd(ibuf->fd, POLLOUT, INFTIM);
if (err)
break;
if (imsgbuf_write(ibuf) == -1) {
err = got_error_from_errno("imsgbuf_write");
break;
}
}
return err;
}
int
gotd_imsg_send_error(struct imsgbuf *ibuf, uint32_t peerid,
uint32_t client_id, const struct got_error *err)
{
const struct got_error *flush_err;
struct gotd_imsg_error ierr;
int ret;
ierr.code = err->code;
if (err->code == GOT_ERR_ERRNO)
ierr.errno_code = errno;
else
ierr.errno_code = 0;
ierr.client_id = client_id;
strlcpy(ierr.msg, err->msg, sizeof(ierr.msg));
ret = imsg_compose(ibuf, GOTD_IMSG_ERROR, peerid, getpid(), -1,
&ierr, sizeof(ierr));
if (ret == -1)
return -1;
flush_err = gotd_imsg_flush(ibuf);
if (flush_err)
return -1;
return 0;
}
void
gotd_imsg_event_add(struct gotd_imsgev *iev)
{
iev->events = EV_READ;
if (imsgbuf_queuelen(&iev->ibuf))
iev->events |= EV_WRITE;
event_del(&iev->ev);
event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev);
event_add(&iev->ev, NULL);
}
int
gotd_imsg_compose_event(struct gotd_imsgev *iev, uint16_t type, uint32_t peerid,
int fd, void *data, uint16_t datalen)
{
int ret;
ret = imsg_compose(&iev->ibuf, type, peerid, getpid(), fd,
data, datalen);
if (ret != -1)
gotd_imsg_event_add(iev);
return ret;
}
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