2 * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <sys/queue.h>
18 #include <sys/types.h>
32 #include "got_error.h"
34 #include "got_lib_poll.h"
38 const struct got_error *
39 gotd_imsg_recv_error(uint32_t *client_id, struct imsg *imsg)
41 struct gotd_imsg_error ierr;
44 datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
45 if (datalen != sizeof(ierr))
46 return got_error(GOT_ERR_PRIVSEP_LEN);
47 memcpy(&ierr, imsg->data, sizeof(ierr));
50 *client_id = ierr.client_id;
52 if (ierr.code == GOT_ERR_ERRNO)
53 errno = ierr.errno_code;
55 return got_error_msg(ierr.code, ierr.msg);
58 const struct got_error *
59 gotd_imsg_flush(struct imsgbuf *ibuf)
61 const struct got_error *err = NULL;
63 while (ibuf->w.queued > 0) {
64 err = got_poll_fd(ibuf->fd, POLLOUT, INFTIM);
68 if (imsg_flush(ibuf) == -1) {
69 if (errno != EAGAIN) {
71 err = got_error_from_errno("imsg_flush");
80 const struct got_error *
81 gotd_imsg_recv(struct imsg *imsg, struct imsgbuf *ibuf, size_t min_datalen)
85 n = imsg_get(ibuf, imsg);
87 return got_error_from_errno("imsg_get");
93 return got_error(GOT_ERR_PRIVSEP_READ);
94 return got_error_from_errno("imsg_read");
97 return got_error(GOT_ERR_EOF);
98 n = imsg_get(ibuf, imsg);
100 return got_error_from_errno("imsg_get");
103 if (imsg->hdr.len < IMSG_HEADER_SIZE + min_datalen)
104 return got_error(GOT_ERR_PRIVSEP_LEN);
109 const struct got_error *
110 gotd_imsg_poll_recv(struct imsg *imsg, struct imsgbuf *ibuf, size_t min_datalen)
112 const struct got_error *err = NULL;
115 err = gotd_imsg_recv(imsg, ibuf, min_datalen);
116 if (err == NULL || err->code != GOT_ERR_PRIVSEP_READ)
119 err = got_poll_fd(ibuf->fd, POLLIN, INFTIM);
128 gotd_imsg_send_error(struct imsgbuf *ibuf, uint32_t peerid,
129 uint32_t client_id, const struct got_error *err)
131 const struct got_error *flush_err;
132 struct gotd_imsg_error ierr;
135 ierr.code = err->code;
136 if (err->code == GOT_ERR_ERRNO)
137 ierr.errno_code = errno;
140 ierr.client_id = client_id;
141 strlcpy(ierr.msg, err->msg, sizeof(ierr.msg));
143 ret = imsg_compose(ibuf, GOTD_IMSG_ERROR, peerid, getpid(), -1,
144 &ierr, sizeof(ierr));
148 flush_err = gotd_imsg_flush(ibuf);
156 gotd_imsg_send_error_event(struct gotd_imsgev *iev, uint32_t peerid,
157 uint32_t client_id, const struct got_error *err)
159 struct gotd_imsg_error ierr;
162 ierr.code = err->code;
163 if (err->code == GOT_ERR_ERRNO)
164 ierr.errno_code = errno;
167 ierr.client_id = client_id;
168 strlcpy(ierr.msg, err->msg, sizeof(ierr.msg));
170 ret = gotd_imsg_compose_event(iev, GOTD_IMSG_ERROR, peerid, -1,
171 &ierr, sizeof(ierr));
179 gotd_imsg_event_add(struct gotd_imsgev *iev)
181 iev->events = EV_READ;
182 if (iev->ibuf.w.queued)
183 iev->events |= EV_WRITE;
186 event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev);
187 event_add(&iev->ev, NULL);
191 gotd_imsg_compose_event(struct gotd_imsgev *iev, uint16_t type, uint32_t peerid,
192 int fd, void *data, uint16_t datalen)
196 ret = imsg_compose(&iev->ibuf, type, peerid, getpid(), fd,
199 gotd_imsg_event_add(iev);
205 gotd_imsg_forward(struct gotd_imsgev *iev, struct imsg *imsg, int fd)
207 return gotd_imsg_compose_event(iev, imsg->hdr.type, imsg->hdr.peerid,
208 fd, imsg->data, imsg->hdr.len - IMSG_HEADER_SIZE);