1 93658fb9 2020-03-18 stsp /*
  2 93658fb9 2020-03-18 stsp  * Copyright (c) 2019 Ori Bernstein <ori@openbsd.org>
  3 668a20f6 2020-03-18 stsp  * Copyright (c) 2020 Stefan Sperling <stsp@openbsd.org>
  4 93658fb9 2020-03-18 stsp  *
  5 93658fb9 2020-03-18 stsp  * Permission to use, copy, modify, and distribute this software for any
  6 93658fb9 2020-03-18 stsp  * purpose with or without fee is hereby granted, provided that the above
  7 93658fb9 2020-03-18 stsp  * copyright notice and this permission notice appear in all copies.
  8 93658fb9 2020-03-18 stsp  *
  9 93658fb9 2020-03-18 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 10 93658fb9 2020-03-18 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 11 93658fb9 2020-03-18 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 12 93658fb9 2020-03-18 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 13 93658fb9 2020-03-18 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 14 93658fb9 2020-03-18 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 15 93658fb9 2020-03-18 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 16 93658fb9 2020-03-18 stsp  */
 17 93658fb9 2020-03-18 stsp 
 18 93658fb9 2020-03-18 stsp #include <sys/types.h>
 19 142012ed 2022-10-20 thomas #include <sys/queue.h>
 20 2e5a6fad 2020-03-18 stsp #include <sys/mman.h>
 21 142012ed 2022-10-20 thomas #include <sys/uio.h>
 22 93658fb9 2020-03-18 stsp 
 23 93658fb9 2020-03-18 stsp #include <stdint.h>
 24 93658fb9 2020-03-18 stsp #include <stdio.h>
 25 93658fb9 2020-03-18 stsp #include <stdlib.h>
 26 93658fb9 2020-03-18 stsp #include <string.h>
 27 142012ed 2022-10-20 thomas #include <imsg.h>
 28 142012ed 2022-10-20 thomas #include <limits.h>
 29 142012ed 2022-10-20 thomas #include <time.h>
 30 81a12da5 2020-09-09 naddy #include <unistd.h>
 31 93658fb9 2020-03-18 stsp 
 32 93658fb9 2020-03-18 stsp #include "got_error.h"
 33 93658fb9 2020-03-18 stsp #include "got_object.h"
 34 dd038bc6 2021-09-21 thomas.ad 
 35 93658fb9 2020-03-18 stsp #include "got_lib_delta.h"
 36 142012ed 2022-10-20 thomas #include "got_lib_delta_cache.h"
 37 93658fb9 2020-03-18 stsp #include "got_lib_object.h"
 38 93658fb9 2020-03-18 stsp #include "got_lib_privsep.h"
 39 87c63bee 2022-02-23 thomas #include "got_lib_ratelimit.h"
 40 142012ed 2022-10-20 thomas #include "got_lib_pack.h"
 41 142012ed 2022-10-20 thomas #include "got_lib_pack_index.h"
 42 93658fb9 2020-03-18 stsp 
 43 d582f26c 2020-03-18 stsp #ifndef nitems
 44 d582f26c 2020-03-18 stsp #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
 45 d582f26c 2020-03-18 stsp #endif
 46 d582f26c 2020-03-18 stsp 
 47 668a20f6 2020-03-18 stsp static const struct got_error *
 48 eebe1fbb 2022-10-20 thomas send_index_pack_progress(void *arg, uint32_t nobj_total, uint32_t nobj_indexed,
 49 eebe1fbb 2022-10-20 thomas     uint32_t nobj_loose, uint32_t nobj_resolved)
 50 93658fb9 2020-03-18 stsp {
 51 142012ed 2022-10-20 thomas 	struct imsgbuf *ibuf = arg;
 52 e70bf110 2020-03-22 stsp 	struct got_imsg_index_pack_progress iprogress;
 53 87c63bee 2022-02-23 thomas 
 54 e70bf110 2020-03-22 stsp 	iprogress.nobj_total = nobj_total;
 55 e70bf110 2020-03-22 stsp 	iprogress.nobj_indexed = nobj_indexed;
 56 e70bf110 2020-03-22 stsp 	iprogress.nobj_loose = nobj_loose;
 57 e70bf110 2020-03-22 stsp 	iprogress.nobj_resolved = nobj_resolved;
 58 e70bf110 2020-03-22 stsp 
 59 e70bf110 2020-03-22 stsp 	if (imsg_compose(ibuf, GOT_IMSG_IDXPACK_PROGRESS, 0, 0, -1,
 60 e70bf110 2020-03-22 stsp 	    &iprogress, sizeof(iprogress)) == -1)
 61 e70bf110 2020-03-22 stsp 		return got_error_from_errno("imsg_compose IDXPACK_PROGRESS");
 62 e70bf110 2020-03-22 stsp 
 63 e70bf110 2020-03-22 stsp 	return got_privsep_flush_imsg(ibuf);
 64 e70bf110 2020-03-22 stsp }
 65 e70bf110 2020-03-22 stsp 
 66 e70bf110 2020-03-22 stsp static const struct got_error *
 67 e70bf110 2020-03-22 stsp send_index_pack_done(struct imsgbuf *ibuf)
 68 e70bf110 2020-03-22 stsp {
 69 e70bf110 2020-03-22 stsp 	if (imsg_compose(ibuf, GOT_IMSG_IDXPACK_DONE, 0, 0, -1, NULL, 0) == -1)
 70 e70bf110 2020-03-22 stsp 		return got_error_from_errno("imsg_compose FETCH");
 71 e70bf110 2020-03-22 stsp 	return got_privsep_flush_imsg(ibuf);
 72 950de2cd 2020-03-18 stsp }
 73 93658fb9 2020-03-18 stsp 
 74 93658fb9 2020-03-18 stsp 
 75 93658fb9 2020-03-18 stsp int
 76 93658fb9 2020-03-18 stsp main(int argc, char **argv)
 77 93658fb9 2020-03-18 stsp {
 78 668a20f6 2020-03-18 stsp 	const struct got_error *err = NULL, *close_err;
 79 93658fb9 2020-03-18 stsp 	struct imsgbuf ibuf;
 80 93658fb9 2020-03-18 stsp 	struct imsg imsg;
 81 6059809a 2020-12-17 stsp 	size_t i;
 82 6059809a 2020-12-17 stsp 	int idxfd = -1, tmpfd = -1;
 83 d582f26c 2020-03-18 stsp 	FILE *tmpfiles[3];
 84 668a20f6 2020-03-18 stsp 	struct got_pack pack;
 85 668a20f6 2020-03-18 stsp 	uint8_t pack_hash[SHA1_DIGEST_LENGTH];
 86 668a20f6 2020-03-18 stsp 	off_t packfile_size;
 87 aecd2225 2022-10-20 thomas 	struct got_ratelimit rl;
 88 668a20f6 2020-03-18 stsp #if 0
 89 668a20f6 2020-03-18 stsp 	static int attached;
 90 668a20f6 2020-03-18 stsp 	while (!attached)
 91 668a20f6 2020-03-18 stsp 		sleep(1);
 92 668a20f6 2020-03-18 stsp #endif
 93 93658fb9 2020-03-18 stsp 
 94 aecd2225 2022-10-20 thomas 	got_ratelimit_init(&rl, 0, 500);
 95 aecd2225 2022-10-20 thomas 
 96 d582f26c 2020-03-18 stsp 	for (i = 0; i < nitems(tmpfiles); i++)
 97 d582f26c 2020-03-18 stsp 		tmpfiles[i] = NULL;
 98 d582f26c 2020-03-18 stsp 
 99 668a20f6 2020-03-18 stsp 	memset(&pack, 0, sizeof(pack));
100 668a20f6 2020-03-18 stsp 	pack.fd = -1;
101 a5061f77 2022-06-13 thomas 	err = got_delta_cache_alloc(&pack.delta_cache);
102 a5061f77 2022-06-13 thomas 	if (err)
103 93658fb9 2020-03-18 stsp 		goto done;
104 668a20f6 2020-03-18 stsp 
105 668a20f6 2020-03-18 stsp 	imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
106 861f3006 2020-03-18 stsp #ifndef PROFILE
107 861f3006 2020-03-18 stsp 	/* revoke access to most system calls */
108 861f3006 2020-03-18 stsp 	if (pledge("stdio recvfd", NULL) == -1) {
109 861f3006 2020-03-18 stsp 		err = got_error_from_errno("pledge");
110 861f3006 2020-03-18 stsp 		got_privsep_send_error(&ibuf, err);
111 861f3006 2020-03-18 stsp 		return 1;
112 861f3006 2020-03-18 stsp 	}
113 97799ccd 2022-02-06 thomas 
114 97799ccd 2022-02-06 thomas 	/* revoke fs access */
115 97799ccd 2022-02-06 thomas 	if (landlock_no_fs() == -1) {
116 97799ccd 2022-02-06 thomas 		err = got_error_from_errno("landlock_no_fs");
117 97799ccd 2022-02-06 thomas 		got_privsep_send_error(&ibuf, err);
118 97799ccd 2022-02-06 thomas 		return 1;
119 97799ccd 2022-02-06 thomas 	}
120 5d120ea8 2022-06-23 op 	if (cap_enter() == -1) {
121 5d120ea8 2022-06-23 op 		err = got_error_from_errno("cap_enter");
122 5d120ea8 2022-06-23 op 		got_privsep_send_error(&ibuf, err);
123 5d120ea8 2022-06-23 op 		return 1;
124 5d120ea8 2022-06-23 op 	}
125 861f3006 2020-03-18 stsp #endif
126 668a20f6 2020-03-18 stsp 	err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
127 668a20f6 2020-03-18 stsp 	if (err)
128 668a20f6 2020-03-18 stsp 		goto done;
129 93658fb9 2020-03-18 stsp 	if (imsg.hdr.type == GOT_IMSG_STOP)
130 93658fb9 2020-03-18 stsp 		goto done;
131 93658fb9 2020-03-18 stsp 	if (imsg.hdr.type != GOT_IMSG_IDXPACK_REQUEST) {
132 93658fb9 2020-03-18 stsp 		err = got_error(GOT_ERR_PRIVSEP_MSG);
133 93658fb9 2020-03-18 stsp 		goto done;
134 93658fb9 2020-03-18 stsp 	}
135 668a20f6 2020-03-18 stsp 	if (imsg.hdr.len - IMSG_HEADER_SIZE != sizeof(pack_hash)) {
136 93658fb9 2020-03-18 stsp 		err = got_error(GOT_ERR_PRIVSEP_LEN);
137 93658fb9 2020-03-18 stsp 		goto done;
138 93658fb9 2020-03-18 stsp 	}
139 668a20f6 2020-03-18 stsp 	memcpy(pack_hash, imsg.data, sizeof(pack_hash));
140 668a20f6 2020-03-18 stsp 	pack.fd = imsg.fd;
141 93658fb9 2020-03-18 stsp 
142 668a20f6 2020-03-18 stsp 	err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
143 668a20f6 2020-03-18 stsp 	if (err)
144 93658fb9 2020-03-18 stsp 		goto done;
145 93658fb9 2020-03-18 stsp 	if (imsg.hdr.type == GOT_IMSG_STOP)
146 93658fb9 2020-03-18 stsp 		goto done;
147 73ab1060 2020-03-18 stsp 	if (imsg.hdr.type != GOT_IMSG_IDXPACK_OUTFD) {
148 93658fb9 2020-03-18 stsp 		err = got_error(GOT_ERR_PRIVSEP_MSG);
149 93658fb9 2020-03-18 stsp 		goto done;
150 93658fb9 2020-03-18 stsp 	}
151 93658fb9 2020-03-18 stsp 	if (imsg.hdr.len - IMSG_HEADER_SIZE != 0) {
152 93658fb9 2020-03-18 stsp 		err = got_error(GOT_ERR_PRIVSEP_LEN);
153 93658fb9 2020-03-18 stsp 		goto done;
154 93658fb9 2020-03-18 stsp 	}
155 93658fb9 2020-03-18 stsp 	idxfd = imsg.fd;
156 4788f1ce 2020-03-18 stsp 
157 d582f26c 2020-03-18 stsp 	for (i = 0; i < nitems(tmpfiles); i++) {
158 d582f26c 2020-03-18 stsp 		err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
159 d582f26c 2020-03-18 stsp 		if (err)
160 d582f26c 2020-03-18 stsp 			goto done;
161 d582f26c 2020-03-18 stsp 		if (imsg.hdr.type == GOT_IMSG_STOP)
162 d582f26c 2020-03-18 stsp 			goto done;
163 d582f26c 2020-03-18 stsp 		if (imsg.hdr.type != GOT_IMSG_TMPFD) {
164 d582f26c 2020-03-18 stsp 			err = got_error(GOT_ERR_PRIVSEP_MSG);
165 d582f26c 2020-03-18 stsp 			goto done;
166 d582f26c 2020-03-18 stsp 		}
167 d582f26c 2020-03-18 stsp 		if (imsg.hdr.len - IMSG_HEADER_SIZE != 0) {
168 d582f26c 2020-03-18 stsp 			err = got_error(GOT_ERR_PRIVSEP_LEN);
169 d582f26c 2020-03-18 stsp 			goto done;
170 d582f26c 2020-03-18 stsp 		}
171 d582f26c 2020-03-18 stsp 		tmpfd = imsg.fd;
172 d582f26c 2020-03-18 stsp 		tmpfiles[i] = fdopen(tmpfd, "w+");
173 d582f26c 2020-03-18 stsp 		if (tmpfiles[i] == NULL) {
174 d582f26c 2020-03-18 stsp 			err = got_error_from_errno("fdopen");
175 d582f26c 2020-03-18 stsp 			goto done;
176 d582f26c 2020-03-18 stsp 		}
177 d582f26c 2020-03-18 stsp 		tmpfd = -1;
178 4788f1ce 2020-03-18 stsp 	}
179 93658fb9 2020-03-18 stsp 
180 668a20f6 2020-03-18 stsp 	if (lseek(pack.fd, 0, SEEK_END) == -1) {
181 668a20f6 2020-03-18 stsp 		err = got_error_from_errno("lseek");
182 668a20f6 2020-03-18 stsp 		goto done;
183 668a20f6 2020-03-18 stsp 	}
184 668a20f6 2020-03-18 stsp 	packfile_size = lseek(pack.fd, 0, SEEK_CUR);
185 668a20f6 2020-03-18 stsp 	if (packfile_size == -1) {
186 668a20f6 2020-03-18 stsp 		err = got_error_from_errno("lseek");
187 668a20f6 2020-03-18 stsp 		goto done;
188 668a20f6 2020-03-18 stsp 	}
189 66e6097f 2022-10-27 thomas 	pack.filesize = packfile_size;
190 668a20f6 2020-03-18 stsp 
191 668a20f6 2020-03-18 stsp 	if (lseek(pack.fd, 0, SEEK_SET) == -1) {
192 668a20f6 2020-03-18 stsp 		err = got_error_from_errno("lseek");
193 668a20f6 2020-03-18 stsp 		goto done;
194 668a20f6 2020-03-18 stsp 	}
195 668a20f6 2020-03-18 stsp 
196 2e5a6fad 2020-03-18 stsp #ifndef GOT_PACK_NO_MMAP
197 aa75acde 2022-10-25 thomas 	if (pack.filesize > 0 && pack.filesize <= SIZE_MAX) {
198 aa75acde 2022-10-25 thomas 		pack.map = mmap(NULL, pack.filesize, PROT_READ, MAP_PRIVATE,
199 aa75acde 2022-10-25 thomas 		    pack.fd, 0);
200 aa75acde 2022-10-25 thomas 		if (pack.map == MAP_FAILED)
201 aa75acde 2022-10-25 thomas 			pack.map = NULL; /* fall back to read(2) */
202 aa75acde 2022-10-25 thomas 	}
203 2e5a6fad 2020-03-18 stsp #endif
204 aecd2225 2022-10-20 thomas 	err = got_pack_index(&pack, idxfd, tmpfiles[0], tmpfiles[1],
205 aecd2225 2022-10-20 thomas 	    tmpfiles[2], pack_hash, send_index_pack_progress, &ibuf, &rl);
206 93658fb9 2020-03-18 stsp done:
207 668a20f6 2020-03-18 stsp 	close_err = got_pack_close(&pack);
208 668a20f6 2020-03-18 stsp 	if (close_err && err == NULL)
209 668a20f6 2020-03-18 stsp 		err = close_err;
210 668a20f6 2020-03-18 stsp 	if (idxfd != -1 && close(idxfd) == -1 && err == NULL)
211 668a20f6 2020-03-18 stsp 		err = got_error_from_errno("close");
212 4788f1ce 2020-03-18 stsp 	if (tmpfd != -1 && close(tmpfd) == -1 && err == NULL)
213 4788f1ce 2020-03-18 stsp 		err = got_error_from_errno("close");
214 d582f26c 2020-03-18 stsp 	for (i = 0; i < nitems(tmpfiles); i++) {
215 d582f26c 2020-03-18 stsp 		if (tmpfiles[i] != NULL && fclose(tmpfiles[i]) == EOF &&
216 d582f26c 2020-03-18 stsp 		    err == NULL)
217 812c6838 2021-10-15 thomas 			err = got_error_from_errno("fclose");
218 d582f26c 2020-03-18 stsp 	}
219 668a20f6 2020-03-18 stsp 
220 668a20f6 2020-03-18 stsp 	if (err == NULL)
221 e70bf110 2020-03-22 stsp 		err = send_index_pack_done(&ibuf);
222 668a20f6 2020-03-18 stsp 	if (err) {
223 668a20f6 2020-03-18 stsp 		got_privsep_send_error(&ibuf, err);
224 93658fb9 2020-03-18 stsp 		fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
225 93658fb9 2020-03-18 stsp 		got_privsep_send_error(&ibuf, err);
226 668a20f6 2020-03-18 stsp 		exit(1);
227 93658fb9 2020-03-18 stsp 	}
228 93658fb9 2020-03-18 stsp 
229 93658fb9 2020-03-18 stsp 	exit(0);
230 93658fb9 2020-03-18 stsp }