1 /*
2  * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
3  *
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.
7  *
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.
15  */
16 
17 #include <sys/types.h>
18 #include <sys/queue.h>
19 #include <sys/uio.h>
20 
21 #include <event.h>
22 #include <limits.h>
23 #include <stdint.h>
24 #include <stdio.h>
25 #include <string.h>
26 
27 #include <imsg.h>
28 
29 #include "got_error.h"
30 #include "got_object.h"
31 
32 #include "got_lib_hash.h"
33 
34 #include "gotd.h"
35 #include "log.h"
36 
37 void
38 gotd_imsg_send_ack(struct got_object_id *id, struct imsgbuf *ibuf,
39     uint32_t peerid, pid_t pid)
40 {
41 	const struct got_error *err = NULL;
42 	struct gotd_imsg_ack iack;
43 	char hex[SHA1_DIGEST_STRING_LENGTH];
44 
45 	if (log_getverbose() > 0 &&
46 	    got_sha1_digest_to_str(id->sha1, hex, sizeof(hex)))
47 		log_debug("sending ACK for %s", hex);
48 
49 	memset(&iack, 0, sizeof(iack));
50 	memcpy(iack.object_id, id->sha1, SHA1_DIGEST_LENGTH);
51 
52 	if (imsg_compose(ibuf, GOTD_IMSG_ACK, peerid, pid, -1,
53 	    &iack, sizeof(iack)) == -1) {
54 		err = got_error_from_errno("imsg_compose ACK");
55 		goto done;
56 	}
57 
58 	err = gotd_imsg_flush(ibuf);
59 done:
60 	if (err)
61 		log_warnx("sending ACK: %s", err->msg);
62 }
63 
64 void
65 gotd_imsg_send_nak(struct got_object_id *id, struct imsgbuf *ibuf,
66     uint32_t peerid, pid_t pid)
67 {
68 	const struct got_error *err = NULL;
69 	struct gotd_imsg_nak inak;
70 	char hex[SHA1_DIGEST_STRING_LENGTH];
71 
72 	if (log_getverbose() > 0 &&
73 	    got_sha1_digest_to_str(id->sha1, hex, sizeof(hex)))
74 		log_debug("sending NAK for %s", hex);
75 
76 	memset(&inak, 0, sizeof(inak));
77 	memcpy(inak.object_id, id->sha1, SHA1_DIGEST_LENGTH);
78 
79 	if (imsg_compose(ibuf, GOTD_IMSG_NAK, peerid, pid, -1,
80 	    &inak, sizeof(inak)) == -1) {
81 		err = got_error_from_errno("imsg_compose NAK");
82 		goto done;
83 	}
84 
85 	err = gotd_imsg_flush(ibuf);
86 done:
87 	if (err)
88 		log_warnx("sending NAK: %s", err->msg);
89 }