2 * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
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 "telescope.h"
25 static void imsg_event_add(struct imsgev *);
32 if ((flags = fcntl(fd, F_GETFL)) == -1)
34 if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1)
40 has_prefix(const char *str, const char *prfx)
44 for (i = 0; str[i] != '\0' && prfx[i] != '\0'; ++i)
45 if (str[i] != prfx[i])
47 return prfx[i] == '\0';
51 unicode_isspace(uint32_t cp)
59 unicode_isgraph(uint32_t cp)
67 imsg_event_add(struct imsgev *iev)
69 iev->events = EV_READ;
70 if (iev->ibuf.w.queued)
71 iev->events |= EV_WRITE;
74 event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev);
75 event_add(&iev->ev, NULL);
79 dispatch_imsg(struct imsgev *iev, short event, imsg_handlerfn **handlers,
89 if (event & EV_READ) {
90 if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
91 err(1, "imsg_read error");
93 err(1, "connection closed");
95 if (event & EV_WRITE) {
96 if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)
97 err(1, "msgbuf_write");
99 err(1, "connection closed");
103 if ((n = imsg_get(ibuf, &imsg)) == -1)
107 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
109 if (i > (size / sizeof(imsg_handlerfn*)) || handlers[i] == NULL)
111 handlers[i](&imsg, datalen);
119 imsg_compose_event(struct imsgev *iev, uint16_t type, uint32_t peerid,
120 pid_t pid, int fd, const void *data, uint16_t datalen)
124 if ((ret = imsg_compose(&iev->ibuf, type, peerid, pid, fd, data,