1 93658fb9 2020-03-18 stsp /*
  2 93658fb9 2020-03-18 stsp  * Copyright (c) 2018, 2019 Ori Bernstein <ori@openbsd.org>
  3 93658fb9 2020-03-18 stsp  *
  4 93658fb9 2020-03-18 stsp  * Permission to use, copy, modify, and distribute this software for any
  5 93658fb9 2020-03-18 stsp  * purpose with or without fee is hereby granted, provided that the above
  6 93658fb9 2020-03-18 stsp  * copyright notice and this permission notice appear in all copies.
  7 93658fb9 2020-03-18 stsp  *
  8 93658fb9 2020-03-18 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 93658fb9 2020-03-18 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 93658fb9 2020-03-18 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 93658fb9 2020-03-18 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 93658fb9 2020-03-18 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 93658fb9 2020-03-18 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 93658fb9 2020-03-18 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 93658fb9 2020-03-18 stsp  */
 16 93658fb9 2020-03-18 stsp 
 17 93658fb9 2020-03-18 stsp #include <sys/types.h>
 18 93658fb9 2020-03-18 stsp #include <sys/stat.h>
 19 93658fb9 2020-03-18 stsp #include <sys/queue.h>
 20 93658fb9 2020-03-18 stsp #include <sys/uio.h>
 21 93658fb9 2020-03-18 stsp #include <sys/socket.h>
 22 93658fb9 2020-03-18 stsp #include <sys/wait.h>
 23 93658fb9 2020-03-18 stsp #include <sys/syslimits.h>
 24 93658fb9 2020-03-18 stsp #include <sys/resource.h>
 25 93658fb9 2020-03-18 stsp #include <sys/socket.h>
 26 93658fb9 2020-03-18 stsp 
 27 93658fb9 2020-03-18 stsp #include <errno.h>
 28 5cc27ede 2020-03-18 stsp #include <err.h>
 29 93658fb9 2020-03-18 stsp #include <fcntl.h>
 30 93658fb9 2020-03-18 stsp #include <stdio.h>
 31 93658fb9 2020-03-18 stsp #include <stdlib.h>
 32 93658fb9 2020-03-18 stsp #include <string.h>
 33 93658fb9 2020-03-18 stsp #include <stdint.h>
 34 93658fb9 2020-03-18 stsp #include <sha1.h>
 35 93658fb9 2020-03-18 stsp #include <zlib.h>
 36 93658fb9 2020-03-18 stsp #include <ctype.h>
 37 93658fb9 2020-03-18 stsp #include <limits.h>
 38 93658fb9 2020-03-18 stsp #include <imsg.h>
 39 93658fb9 2020-03-18 stsp #include <time.h>
 40 93658fb9 2020-03-18 stsp #include <uuid.h>
 41 93658fb9 2020-03-18 stsp #include <netdb.h>
 42 93658fb9 2020-03-18 stsp #include <netinet/in.h>
 43 93658fb9 2020-03-18 stsp 
 44 93658fb9 2020-03-18 stsp #include "got_error.h"
 45 93658fb9 2020-03-18 stsp #include "got_reference.h"
 46 93658fb9 2020-03-18 stsp #include "got_repository.h"
 47 93658fb9 2020-03-18 stsp #include "got_path.h"
 48 93658fb9 2020-03-18 stsp #include "got_cancel.h"
 49 93658fb9 2020-03-18 stsp #include "got_worktree.h"
 50 93658fb9 2020-03-18 stsp #include "got_object.h"
 51 fe4e1501 2020-03-18 stsp #include "got_opentemp.h"
 52 82ebf666 2020-03-18 stsp #include "got_fetch.h"
 53 93658fb9 2020-03-18 stsp 
 54 93658fb9 2020-03-18 stsp #include "got_lib_delta.h"
 55 93658fb9 2020-03-18 stsp #include "got_lib_inflate.h"
 56 93658fb9 2020-03-18 stsp #include "got_lib_object.h"
 57 93658fb9 2020-03-18 stsp #include "got_lib_object_parse.h"
 58 93658fb9 2020-03-18 stsp #include "got_lib_object_create.h"
 59 93658fb9 2020-03-18 stsp #include "got_lib_pack.h"
 60 93658fb9 2020-03-18 stsp #include "got_lib_sha1.h"
 61 93658fb9 2020-03-18 stsp #include "got_lib_privsep.h"
 62 93658fb9 2020-03-18 stsp #include "got_lib_object_cache.h"
 63 93658fb9 2020-03-18 stsp #include "got_lib_repository.h"
 64 93658fb9 2020-03-18 stsp 
 65 93658fb9 2020-03-18 stsp #define GOT_PROTOMAX	64
 66 93658fb9 2020-03-18 stsp #define GOT_HOSTMAX	256
 67 93658fb9 2020-03-18 stsp #define GOT_PATHMAX	512
 68 93658fb9 2020-03-18 stsp #define GOT_REPOMAX	256
 69 93658fb9 2020-03-18 stsp #define GOT_PORTMAX	16
 70 93658fb9 2020-03-18 stsp #define GOT_URIMAX	1024
 71 93658fb9 2020-03-18 stsp 
 72 93658fb9 2020-03-18 stsp static int
 73 93658fb9 2020-03-18 stsp hassuffix(char *base, char *suf)
 74 93658fb9 2020-03-18 stsp {
 75 93658fb9 2020-03-18 stsp 	int nb, ns;
 76 93658fb9 2020-03-18 stsp 
 77 93658fb9 2020-03-18 stsp 	nb = strlen(base);
 78 93658fb9 2020-03-18 stsp 	ns = strlen(suf);
 79 93658fb9 2020-03-18 stsp 	if (ns <= nb && strcmp(base + (nb - ns), suf) == 0)
 80 93658fb9 2020-03-18 stsp 		return 1;
 81 93658fb9 2020-03-18 stsp 	return 0;
 82 93658fb9 2020-03-18 stsp }
 83 93658fb9 2020-03-18 stsp 
 84 5cc27ede 2020-03-18 stsp static const struct got_error *
 85 09838ffc 2020-03-18 stsp dial_ssh(int *fetchfd, const char *host, const char *port, const char *path,
 86 09838ffc 2020-03-18 stsp     const char *direction)
 87 93658fb9 2020-03-18 stsp {
 88 5cc27ede 2020-03-18 stsp 	const struct got_error *error = NULL;
 89 93658fb9 2020-03-18 stsp 	int pid, pfd[2];
 90 93658fb9 2020-03-18 stsp 	char cmd[64];
 91 93658fb9 2020-03-18 stsp 
 92 5cc27ede 2020-03-18 stsp 	*fetchfd = -1;
 93 5cc27ede 2020-03-18 stsp 
 94 93658fb9 2020-03-18 stsp 	if (pipe(pfd) == -1)
 95 5cc27ede 2020-03-18 stsp 		return got_error_from_errno("pipe");
 96 5cc27ede 2020-03-18 stsp 
 97 93658fb9 2020-03-18 stsp 	pid = fork();
 98 5cc27ede 2020-03-18 stsp 	if (pid == -1) {
 99 5cc27ede 2020-03-18 stsp 		error = got_error_from_errno("fork");
100 5cc27ede 2020-03-18 stsp 		close(pfd[0]);
101 93658fb9 2020-03-18 stsp 		close(pfd[1]);
102 5cc27ede 2020-03-18 stsp 		return error;
103 5cc27ede 2020-03-18 stsp 	} else if (pid == 0) {
104 5cc27ede 2020-03-18 stsp 		int n;
105 5cc27ede 2020-03-18 stsp 		close(pfd[1]);
106 93658fb9 2020-03-18 stsp 		dup2(pfd[0], 0);
107 93658fb9 2020-03-18 stsp 		dup2(pfd[0], 1);
108 5cc27ede 2020-03-18 stsp 		n = snprintf(cmd, sizeof(cmd), "git-%s-pack", direction);
109 5cc27ede 2020-03-18 stsp 		if (n < 0 || n >= sizeof(cmd))
110 5cc27ede 2020-03-18 stsp 			err(1, "snprintf");
111 5cc27ede 2020-03-18 stsp 		if (execlp("ssh", "ssh", host, cmd, path, NULL) == -1)
112 5cc27ede 2020-03-18 stsp 			err(1, "execlp");
113 5cc27ede 2020-03-18 stsp 		abort(); /* not reached */
114 5cc27ede 2020-03-18 stsp 	} else {
115 93658fb9 2020-03-18 stsp 		close(pfd[0]);
116 5cc27ede 2020-03-18 stsp 		*fetchfd = pfd[1];
117 5cc27ede 2020-03-18 stsp 		return NULL;
118 93658fb9 2020-03-18 stsp 	}
119 93658fb9 2020-03-18 stsp }
120 93658fb9 2020-03-18 stsp 
121 5cc27ede 2020-03-18 stsp static const struct got_error *
122 09838ffc 2020-03-18 stsp dial_git(int *fetchfd, const char *host, const char *port, const char *path,
123 09838ffc 2020-03-18 stsp     const char *direction)
124 93658fb9 2020-03-18 stsp {
125 5cc27ede 2020-03-18 stsp 	const struct got_error *err = NULL;
126 93658fb9 2020-03-18 stsp 	struct addrinfo hints, *servinfo, *p;
127 5cc27ede 2020-03-18 stsp 	char *cmd = NULL, *pkt = NULL;
128 4312a498 2020-03-18 stsp 	int fd = -1, totlen, r, eaicode;
129 5cc27ede 2020-03-18 stsp 
130 5cc27ede 2020-03-18 stsp 	*fetchfd = -1;
131 93658fb9 2020-03-18 stsp 
132 93658fb9 2020-03-18 stsp 	memset(&hints, 0, sizeof hints);
133 93658fb9 2020-03-18 stsp 	hints.ai_family = AF_UNSPEC;
134 93658fb9 2020-03-18 stsp 	hints.ai_socktype = SOCK_STREAM;
135 5cc27ede 2020-03-18 stsp 	eaicode = getaddrinfo(host, port, &hints, &servinfo);
136 a117fd10 2020-03-18 stsp 	if (eaicode) {
137 a117fd10 2020-03-18 stsp 		char msg[512];
138 a117fd10 2020-03-18 stsp 		snprintf(msg, sizeof(msg), "%s: %s", host,
139 a117fd10 2020-03-18 stsp 		    gai_strerror(eaicode));
140 a117fd10 2020-03-18 stsp 		return got_error_msg(GOT_ERR_ADDRINFO, msg);
141 a117fd10 2020-03-18 stsp 	}
142 93658fb9 2020-03-18 stsp 
143 93658fb9 2020-03-18 stsp 	for (p = servinfo; p != NULL; p = p->ai_next) {
144 93658fb9 2020-03-18 stsp 		if ((fd = socket(p->ai_family, p->ai_socktype,
145 93658fb9 2020-03-18 stsp 		    p->ai_protocol)) == -1)
146 93658fb9 2020-03-18 stsp 			continue;
147 93658fb9 2020-03-18 stsp 		if (connect(fd, p->ai_addr, p->ai_addrlen) == 0)
148 93658fb9 2020-03-18 stsp 			break;
149 5cc27ede 2020-03-18 stsp 		err = got_error_from_errno("connect");
150 93658fb9 2020-03-18 stsp 		close(fd);
151 93658fb9 2020-03-18 stsp 	}
152 93658fb9 2020-03-18 stsp 	if (p == NULL)
153 5cc27ede 2020-03-18 stsp 		goto done;
154 93658fb9 2020-03-18 stsp 
155 4312a498 2020-03-18 stsp 	if (asprintf(&cmd, "git-%s-pack %s", direction, path) == -1) {
156 5cc27ede 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
157 5cc27ede 2020-03-18 stsp 		goto done;
158 5cc27ede 2020-03-18 stsp 	}
159 4312a498 2020-03-18 stsp 	totlen = 4 + strlen(cmd) + 1 + strlen("host=") + strlen(host) + 1;
160 4312a498 2020-03-18 stsp 	if (asprintf(&pkt, "%04x%s", totlen, cmd) == -1) {
161 5cc27ede 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
162 5cc27ede 2020-03-18 stsp 		goto done;
163 5cc27ede 2020-03-18 stsp 	}
164 4312a498 2020-03-18 stsp 	r = write(fd, pkt, strlen(pkt) + 1);
165 4312a498 2020-03-18 stsp 	if (r == -1) {
166 4312a498 2020-03-18 stsp 		err = got_error_from_errno("write");
167 4312a498 2020-03-18 stsp 		goto done;
168 4312a498 2020-03-18 stsp 	}
169 4312a498 2020-03-18 stsp 	if (asprintf(&pkt, "host=%s", host) == -1) {
170 4312a498 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
171 4312a498 2020-03-18 stsp 		goto done;
172 4312a498 2020-03-18 stsp 	}
173 4312a498 2020-03-18 stsp 	r = write(fd, pkt, strlen(pkt) + 1);
174 4312a498 2020-03-18 stsp 	if (r == -1) {
175 5cc27ede 2020-03-18 stsp 		err = got_error_from_errno("write");
176 4312a498 2020-03-18 stsp 		goto done;
177 4312a498 2020-03-18 stsp 	}
178 5cc27ede 2020-03-18 stsp done:
179 93658fb9 2020-03-18 stsp 	free(cmd);
180 93658fb9 2020-03-18 stsp 	free(pkt);
181 5cc27ede 2020-03-18 stsp 	if (err) {
182 5cc27ede 2020-03-18 stsp 		if (fd != -1)
183 5cc27ede 2020-03-18 stsp 			close(fd);
184 5cc27ede 2020-03-18 stsp 	} else
185 5cc27ede 2020-03-18 stsp 		*fetchfd = fd;
186 20eb36d0 2020-03-18 stsp 	return err;
187 20eb36d0 2020-03-18 stsp }
188 20eb36d0 2020-03-18 stsp 
189 20eb36d0 2020-03-18 stsp const struct got_error *
190 20eb36d0 2020-03-18 stsp got_fetch_connect(int *fetchfd, const char *proto, const char *host,
191 20eb36d0 2020-03-18 stsp     const char *port, const char *server_path)
192 20eb36d0 2020-03-18 stsp {
193 20eb36d0 2020-03-18 stsp 	const struct got_error *err = NULL;
194 20eb36d0 2020-03-18 stsp 
195 20eb36d0 2020-03-18 stsp 	*fetchfd = -1;
196 20eb36d0 2020-03-18 stsp 
197 20eb36d0 2020-03-18 stsp 	if (strcmp(proto, "ssh") == 0 || strcmp(proto, "git+ssh") == 0)
198 20eb36d0 2020-03-18 stsp 		err = dial_ssh(fetchfd, host, port, server_path, "upload");
199 20eb36d0 2020-03-18 stsp 	else if (strcmp(proto, "git") == 0)
200 20eb36d0 2020-03-18 stsp 		err = dial_git(fetchfd, host, port, server_path, "upload");
201 20eb36d0 2020-03-18 stsp 	else if (strcmp(proto, "http") == 0 || strcmp(proto, "git+http") == 0)
202 20eb36d0 2020-03-18 stsp 		err = got_error_path(proto, GOT_ERR_NOT_IMPL);
203 20eb36d0 2020-03-18 stsp 	else
204 20eb36d0 2020-03-18 stsp 		err = got_error_path(proto, GOT_ERR_BAD_PROTO);
205 5cc27ede 2020-03-18 stsp 	return err;
206 93658fb9 2020-03-18 stsp }
207 93658fb9 2020-03-18 stsp 
208 82ebf666 2020-03-18 stsp const struct got_error *
209 82ebf666 2020-03-18 stsp got_fetch_parse_uri(char **proto, char **host, char **port,
210 82ebf666 2020-03-18 stsp     char **server_path, char **repo_name, const char *uri)
211 93658fb9 2020-03-18 stsp {
212 82ebf666 2020-03-18 stsp 	const struct got_error *err = NULL;
213 93658fb9 2020-03-18 stsp 	char *s, *p, *q;
214 93658fb9 2020-03-18 stsp 	int n, hasport;
215 93658fb9 2020-03-18 stsp 
216 82ebf666 2020-03-18 stsp 	*proto = *host = *port = *server_path = *repo_name = NULL;
217 82ebf666 2020-03-18 stsp 
218 93658fb9 2020-03-18 stsp 	p = strstr(uri, "://");
219 93658fb9 2020-03-18 stsp 	if (!p) {
220 82ebf666 2020-03-18 stsp 		return got_error(GOT_ERR_PARSE_URI);
221 93658fb9 2020-03-18 stsp 	}
222 82ebf666 2020-03-18 stsp 	*proto = strndup(uri, p - uri);
223 82ebf666 2020-03-18 stsp 	if (proto == NULL) {
224 82ebf666 2020-03-18 stsp 		err = got_error_from_errno("strndup");
225 82ebf666 2020-03-18 stsp 		goto done;
226 82ebf666 2020-03-18 stsp 	}
227 82ebf666 2020-03-18 stsp 
228 82ebf666 2020-03-18 stsp 	hasport = (strcmp(*proto, "git") == 0 ||
229 82ebf666 2020-03-18 stsp 	    strstr(*proto, "http") == *proto);
230 93658fb9 2020-03-18 stsp 	s = p + 3;
231 93658fb9 2020-03-18 stsp 	p = NULL;
232 93658fb9 2020-03-18 stsp 	if (!hasport) {
233 93658fb9 2020-03-18 stsp 		p = strstr(s, ":");
234 93658fb9 2020-03-18 stsp 		if (p != NULL)
235 93658fb9 2020-03-18 stsp 			p++;
236 93658fb9 2020-03-18 stsp 	}
237 93658fb9 2020-03-18 stsp 	if (p == NULL)
238 93658fb9 2020-03-18 stsp 		p = strstr(s, "/");
239 93658fb9 2020-03-18 stsp 	if (p == NULL || strlen(p) == 1) {
240 82ebf666 2020-03-18 stsp 		err = got_error(GOT_ERR_PARSE_URI);
241 82ebf666 2020-03-18 stsp 		goto done;
242 93658fb9 2020-03-18 stsp 	}
243 93658fb9 2020-03-18 stsp 
244 93658fb9 2020-03-18 stsp 	q = memchr(s, ':', p - s);
245 93658fb9 2020-03-18 stsp 	if (q) {
246 82ebf666 2020-03-18 stsp 		*host = strndup(s, q - s);
247 82ebf666 2020-03-18 stsp 		if (*host == NULL) {
248 82ebf666 2020-03-18 stsp 			err = got_error_from_errno("strndup");
249 82ebf666 2020-03-18 stsp 			goto done;
250 82ebf666 2020-03-18 stsp 		}
251 82ebf666 2020-03-18 stsp 		*port = strndup(q + 1, p - (q + 1));
252 82ebf666 2020-03-18 stsp 		if (*port == NULL) {
253 82ebf666 2020-03-18 stsp 			err = got_error_from_errno("strndup");
254 82ebf666 2020-03-18 stsp 			goto done;
255 82ebf666 2020-03-18 stsp 		}
256 82ebf666 2020-03-18 stsp 	} else {
257 82ebf666 2020-03-18 stsp 		*host = strndup(s, p - s);
258 82ebf666 2020-03-18 stsp 		if (*host == NULL) {
259 82ebf666 2020-03-18 stsp 			err = got_error_from_errno("strndup");
260 82ebf666 2020-03-18 stsp 			goto done;
261 82ebf666 2020-03-18 stsp 		}
262 82ebf666 2020-03-18 stsp 		if (asprintf(port, "%u", GOT_DEFAULT_GIT_PORT) == -1) {
263 82ebf666 2020-03-18 stsp 			err = got_error_from_errno("asprintf");
264 82ebf666 2020-03-18 stsp 			goto done;
265 82ebf666 2020-03-18 stsp 		}
266 93658fb9 2020-03-18 stsp 	}
267 93658fb9 2020-03-18 stsp 
268 82ebf666 2020-03-18 stsp 	*server_path = strdup(p);
269 82ebf666 2020-03-18 stsp 	if (*server_path == NULL) {
270 82ebf666 2020-03-18 stsp 		err = got_error_from_errno("strdup");
271 82ebf666 2020-03-18 stsp 		goto done;
272 82ebf666 2020-03-18 stsp 	}
273 82ebf666 2020-03-18 stsp 
274 93658fb9 2020-03-18 stsp 	p = strrchr(p, '/') + 1;
275 93658fb9 2020-03-18 stsp 	if (!p || strlen(p) == 0) {
276 93658fb9 2020-03-18 stsp 		//werrstr("missing repository in uri");
277 82ebf666 2020-03-18 stsp 		err = got_error(GOT_ERR_PARSE_URI);
278 82ebf666 2020-03-18 stsp 		goto done;
279 93658fb9 2020-03-18 stsp 	}
280 93658fb9 2020-03-18 stsp 	n = strlen(p);
281 93658fb9 2020-03-18 stsp 	if (hassuffix(p, ".git"))
282 93658fb9 2020-03-18 stsp 		n -= 4;
283 82ebf666 2020-03-18 stsp 	*repo_name = strndup(p, (p + n) - p);
284 82ebf666 2020-03-18 stsp 	if (*repo_name == NULL) {
285 82ebf666 2020-03-18 stsp 		err = got_error_from_errno("strndup");
286 82ebf666 2020-03-18 stsp 		goto done;
287 82ebf666 2020-03-18 stsp 	}
288 82ebf666 2020-03-18 stsp done:
289 82ebf666 2020-03-18 stsp 	if (err) {
290 82ebf666 2020-03-18 stsp 		free(*proto);
291 82ebf666 2020-03-18 stsp 		*proto = NULL;
292 82ebf666 2020-03-18 stsp 		free(*host);
293 82ebf666 2020-03-18 stsp 		*host = NULL;
294 82ebf666 2020-03-18 stsp 		free(*port);
295 82ebf666 2020-03-18 stsp 		*port = NULL;
296 82ebf666 2020-03-18 stsp 		free(*server_path);
297 82ebf666 2020-03-18 stsp 		*server_path = NULL;
298 82ebf666 2020-03-18 stsp 		free(*repo_name);
299 82ebf666 2020-03-18 stsp 		*repo_name = NULL;
300 82ebf666 2020-03-18 stsp 	}
301 82ebf666 2020-03-18 stsp 	return err;
302 849f7557 2020-03-18 stsp }
303 849f7557 2020-03-18 stsp 
304 849f7557 2020-03-18 stsp static const struct got_error *
305 849f7557 2020-03-18 stsp check_pack_hash(int fd, size_t sz, uint8_t *hcomp)
306 849f7557 2020-03-18 stsp {
307 849f7557 2020-03-18 stsp 	SHA1_CTX ctx;
308 849f7557 2020-03-18 stsp 	uint8_t hexpect[SHA1_DIGEST_LENGTH];
309 849f7557 2020-03-18 stsp 	uint8_t buf[32 * 1024];
310 849f7557 2020-03-18 stsp 	ssize_t n, r, nr;
311 849f7557 2020-03-18 stsp 
312 849f7557 2020-03-18 stsp 	if (sz < sizeof(struct got_packfile_hdr) + SHA1_DIGEST_LENGTH)
313 849f7557 2020-03-18 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE, "short packfile");
314 849f7557 2020-03-18 stsp 
315 849f7557 2020-03-18 stsp 	n = 0;
316 849f7557 2020-03-18 stsp 	SHA1Init(&ctx);
317 849f7557 2020-03-18 stsp 	while (n < sz - 20) {
318 849f7557 2020-03-18 stsp 		nr = sizeof(buf);
319 849f7557 2020-03-18 stsp 		if (sz - n - 20 < sizeof(buf))
320 849f7557 2020-03-18 stsp 			nr = sz - n - 20;
321 849f7557 2020-03-18 stsp 		r = read(fd, buf, nr);
322 849f7557 2020-03-18 stsp 		if (r == -1)
323 849f7557 2020-03-18 stsp 			return got_error_from_errno("read");
324 849f7557 2020-03-18 stsp 		if (r != nr)
325 849f7557 2020-03-18 stsp 			return got_error_msg(GOT_ERR_BAD_PACKFILE,
326 849f7557 2020-03-18 stsp 			    "short pack file");
327 849f7557 2020-03-18 stsp 		SHA1Update(&ctx, buf, nr);
328 849f7557 2020-03-18 stsp 		n += r;
329 849f7557 2020-03-18 stsp 	}
330 849f7557 2020-03-18 stsp 	SHA1Final(hcomp, &ctx);
331 849f7557 2020-03-18 stsp 
332 849f7557 2020-03-18 stsp 	r = read(fd, hexpect, sizeof(hexpect));
333 849f7557 2020-03-18 stsp 	if (r == -1)
334 849f7557 2020-03-18 stsp 		return got_error_from_errno("read");
335 849f7557 2020-03-18 stsp 	if (r != sizeof(hexpect))
336 849f7557 2020-03-18 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
337 849f7557 2020-03-18 stsp 		    "short pack file");
338 849f7557 2020-03-18 stsp 
339 849f7557 2020-03-18 stsp 	if (memcmp(hcomp, hexpect, SHA1_DIGEST_LENGTH) != 0)
340 849f7557 2020-03-18 stsp 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
341 849f7557 2020-03-18 stsp 		    "packfile checksum mismatch");
342 849f7557 2020-03-18 stsp 
343 849f7557 2020-03-18 stsp 	return NULL;
344 93658fb9 2020-03-18 stsp }
345 93658fb9 2020-03-18 stsp 
346 93658fb9 2020-03-18 stsp const struct got_error*
347 07e52fce 2020-03-18 stsp got_fetch_pack(struct got_object_id **pack_hash, struct got_pathlist_head *refs,
348 531c3985 2020-03-18 stsp     struct got_pathlist_head *symrefs, int fetchfd, struct got_repository *repo,
349 531c3985 2020-03-18 stsp     got_fetch_progress_cb progress_cb, void *progress_arg)
350 93658fb9 2020-03-18 stsp {
351 20eb36d0 2020-03-18 stsp 	int imsg_fetchfds[2], imsg_idxfds[2];
352 20eb36d0 2020-03-18 stsp 	int packfd = -1, npackfd = -1, idxfd = -1, nidxfd = -1, nfetchfd = -1;
353 4788f1ce 2020-03-18 stsp 	int tmpfd = -1;
354 85e8591f 2020-03-18 stsp 	int fetchstatus, idxstatus, done = 0;
355 93658fb9 2020-03-18 stsp 	const struct got_error *err;
356 85e8591f 2020-03-18 stsp 	struct imsgbuf fetchibuf, idxibuf;
357 85e8591f 2020-03-18 stsp 	pid_t fetchpid, idxpid;
358 bb64b798 2020-03-18 stsp 	char *tmppackpath = NULL, *tmpidxpath = NULL;
359 afa77e03 2020-03-18 stsp 	char *packpath = NULL, *idxpath = NULL, *id_str = NULL;
360 bb64b798 2020-03-18 stsp 	const char *repo_path = got_repo_get_path(repo);
361 33501562 2020-03-18 stsp 	struct got_pathlist_head have_refs;
362 abe0f35f 2020-03-18 stsp 	struct got_pathlist_entry *pe;
363 d2cdc636 2020-03-18 stsp 	off_t packfile_size = 0;
364 ee61b6d3 2020-03-18 stsp 	char *path;
365 abe0f35f 2020-03-18 stsp 
366 d9b4d0c0 2020-03-18 stsp 	*pack_hash = NULL;
367 93658fb9 2020-03-18 stsp 
368 33501562 2020-03-18 stsp 	TAILQ_INIT(&have_refs);
369 33501562 2020-03-18 stsp 
370 66cba96f 2020-03-18 stsp 	if (asprintf(&path, "%s/%s/fetching.pack",
371 66cba96f 2020-03-18 stsp 	    repo_path, GOT_OBJECTS_PACK_DIR) == -1) {
372 ee61b6d3 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
373 ee61b6d3 2020-03-18 stsp 		goto done;
374 8e278d17 2020-03-18 stsp 	}
375 ee61b6d3 2020-03-18 stsp 	err = got_opentemp_named_fd(&tmppackpath, &packfd, path);
376 ee61b6d3 2020-03-18 stsp 	free(path);
377 fe4e1501 2020-03-18 stsp 	if (err)
378 8e278d17 2020-03-18 stsp 		goto done;
379 93658fb9 2020-03-18 stsp 	npackfd = dup(packfd);
380 8e278d17 2020-03-18 stsp 	if (npackfd == -1) {
381 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("dup");
382 8e278d17 2020-03-18 stsp 		goto done;
383 8e278d17 2020-03-18 stsp 	}
384 66cba96f 2020-03-18 stsp 	if (asprintf(&path, "%s/%s/fetching.idx",
385 66cba96f 2020-03-18 stsp 	    repo_path, GOT_OBJECTS_PACK_DIR) == -1) {
386 ee61b6d3 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
387 ee61b6d3 2020-03-18 stsp 		goto done;
388 ee61b6d3 2020-03-18 stsp 	}
389 ee61b6d3 2020-03-18 stsp 	err = got_opentemp_named_fd(&tmpidxpath, &idxfd, path);
390 ee61b6d3 2020-03-18 stsp 	free(path);
391 fe4e1501 2020-03-18 stsp 	if (err)
392 8e278d17 2020-03-18 stsp 		goto done;
393 93658fb9 2020-03-18 stsp 	nidxfd = dup(idxfd);
394 8e278d17 2020-03-18 stsp 	if (nidxfd == -1) {
395 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("dup");
396 8e278d17 2020-03-18 stsp 		goto done;
397 8e278d17 2020-03-18 stsp 	}
398 93658fb9 2020-03-18 stsp 
399 4788f1ce 2020-03-18 stsp 	tmpfd = got_opentempfd();
400 4788f1ce 2020-03-18 stsp 	if (tmpfd == -1) {
401 4788f1ce 2020-03-18 stsp 		err = got_error_from_errno("got_opentempfd");
402 4788f1ce 2020-03-18 stsp 		goto done;
403 4788f1ce 2020-03-18 stsp 	}
404 4788f1ce 2020-03-18 stsp 
405 8e278d17 2020-03-18 stsp 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fetchfds) == -1) {
406 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("socketpair");
407 8e278d17 2020-03-18 stsp 		goto done;
408 8e278d17 2020-03-18 stsp 	}
409 93658fb9 2020-03-18 stsp 
410 85e8591f 2020-03-18 stsp 	fetchpid = fork();
411 85e8591f 2020-03-18 stsp 	if (fetchpid == -1) {
412 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("fork");
413 8e278d17 2020-03-18 stsp 		goto done;
414 85e8591f 2020-03-18 stsp 	} else if (fetchpid == 0){
415 8e278d17 2020-03-18 stsp 		got_privsep_exec_child(imsg_fetchfds,
416 12491971 2020-03-18 stsp 		    GOT_PATH_PROG_FETCH_PACK, tmppackpath);
417 93658fb9 2020-03-18 stsp 	}
418 93658fb9 2020-03-18 stsp 
419 8e278d17 2020-03-18 stsp 	if (close(imsg_fetchfds[1]) != 0) {
420 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
421 8e278d17 2020-03-18 stsp 		goto done;
422 8e278d17 2020-03-18 stsp 	}
423 85e8591f 2020-03-18 stsp 	imsg_init(&fetchibuf, imsg_fetchfds[0]);
424 20eb36d0 2020-03-18 stsp 	nfetchfd = dup(fetchfd);
425 20eb36d0 2020-03-18 stsp 	if (nfetchfd == -1) {
426 20eb36d0 2020-03-18 stsp 		err = got_error_from_errno("dup");
427 20eb36d0 2020-03-18 stsp 		goto done;
428 20eb36d0 2020-03-18 stsp 	}
429 85e8591f 2020-03-18 stsp 	err = got_privsep_send_fetch_req(&fetchibuf, nfetchfd, &have_refs);
430 93658fb9 2020-03-18 stsp 	if (err != NULL)
431 8e278d17 2020-03-18 stsp 		goto done;
432 20eb36d0 2020-03-18 stsp 	nfetchfd = -1;
433 f826addf 2020-03-18 stsp 	err = got_privsep_send_fetch_outfd(&fetchibuf, npackfd);
434 93658fb9 2020-03-18 stsp 	if (err != NULL)
435 8e278d17 2020-03-18 stsp 		goto done;
436 93658fb9 2020-03-18 stsp 	npackfd = dup(packfd);
437 8e278d17 2020-03-18 stsp 	if (npackfd == -1) {
438 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("dup");
439 8e278d17 2020-03-18 stsp 		goto done;
440 8e278d17 2020-03-18 stsp 	}
441 8e278d17 2020-03-18 stsp 
442 d2cdc636 2020-03-18 stsp 	packfile_size = 0;
443 8f2d01a6 2020-03-18 stsp 	while (!done) {
444 d9b4d0c0 2020-03-18 stsp 		struct got_object_id *id = NULL;
445 d9b4d0c0 2020-03-18 stsp 		char *refname = NULL;
446 531c3985 2020-03-18 stsp 		char *server_progress = NULL;
447 d2cdc636 2020-03-18 stsp 		off_t packfile_size_cur;
448 8e278d17 2020-03-18 stsp 
449 8f2d01a6 2020-03-18 stsp 		err = got_privsep_recv_fetch_progress(&done,
450 d2cdc636 2020-03-18 stsp 		    &id, &refname, symrefs, &server_progress,
451 85e8591f 2020-03-18 stsp 		    &packfile_size_cur, &fetchibuf);
452 8f2d01a6 2020-03-18 stsp 		if (err != NULL)
453 8e278d17 2020-03-18 stsp 			goto done;
454 d9b4d0c0 2020-03-18 stsp 		if (done)
455 d9b4d0c0 2020-03-18 stsp 			*pack_hash = id;
456 d9b4d0c0 2020-03-18 stsp 		else if (refname && id) {
457 d9b4d0c0 2020-03-18 stsp 			err = got_pathlist_append(refs, refname, id);
458 8f2d01a6 2020-03-18 stsp 			if (err)
459 8e278d17 2020-03-18 stsp 				goto done;
460 531c3985 2020-03-18 stsp 		} else if (server_progress) {
461 531c3985 2020-03-18 stsp 			char *s, *s0 = server_progress;
462 531c3985 2020-03-18 stsp 			while ((s = strsep(&s0, "\r")) != NULL) {
463 531c3985 2020-03-18 stsp 				if (*s == '\0')
464 531c3985 2020-03-18 stsp 					continue;
465 668a20f6 2020-03-18 stsp 				err = progress_cb(progress_arg, s,
466 668a20f6 2020-03-18 stsp 				    packfile_size_cur, 0, 0, 0, 0);
467 531c3985 2020-03-18 stsp 				if (err)
468 531c3985 2020-03-18 stsp 					break;
469 531c3985 2020-03-18 stsp 			}
470 531c3985 2020-03-18 stsp 			free(server_progress);
471 531c3985 2020-03-18 stsp 			if (err)
472 531c3985 2020-03-18 stsp 				goto done;
473 d2cdc636 2020-03-18 stsp 		} else if (packfile_size_cur != packfile_size) {
474 d2cdc636 2020-03-18 stsp 			err = progress_cb(progress_arg, NULL,
475 668a20f6 2020-03-18 stsp 			    packfile_size_cur, 0, 0, 0, 0);
476 d2cdc636 2020-03-18 stsp 			if (err)
477 d2cdc636 2020-03-18 stsp 				break;
478 d2cdc636 2020-03-18 stsp 			packfile_size = packfile_size_cur;
479 8f2d01a6 2020-03-18 stsp 		}
480 8f2d01a6 2020-03-18 stsp 	}
481 85e8591f 2020-03-18 stsp 	if (waitpid(fetchpid, &fetchstatus, 0) == -1) {
482 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("waitpid");
483 8e278d17 2020-03-18 stsp 		goto done;
484 8e278d17 2020-03-18 stsp 	}
485 849f7557 2020-03-18 stsp 
486 849f7557 2020-03-18 stsp 	if (lseek(packfd, 0, SEEK_SET) == -1) {
487 849f7557 2020-03-18 stsp 		err = got_error_from_errno("lseek");
488 849f7557 2020-03-18 stsp 		goto done;
489 849f7557 2020-03-18 stsp 	}
490 849f7557 2020-03-18 stsp 	err = check_pack_hash(packfd, packfile_size, (*pack_hash)->sha1);
491 849f7557 2020-03-18 stsp 	if (err)
492 849f7557 2020-03-18 stsp 		goto done;
493 531c3985 2020-03-18 stsp  
494 8e278d17 2020-03-18 stsp 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_idxfds) == -1) {
495 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("socketpair");
496 8e278d17 2020-03-18 stsp 		goto done;
497 8e278d17 2020-03-18 stsp 	}
498 85e8591f 2020-03-18 stsp 	idxpid = fork();
499 85e8591f 2020-03-18 stsp 	if (idxpid == -1) {
500 8e278d17 2020-03-18 stsp 		err= got_error_from_errno("fork");
501 8e278d17 2020-03-18 stsp 		goto done;
502 85e8591f 2020-03-18 stsp 	} else if (idxpid == 0)
503 8e278d17 2020-03-18 stsp 		got_privsep_exec_child(imsg_idxfds,
504 12491971 2020-03-18 stsp 		    GOT_PATH_PROG_INDEX_PACK, tmppackpath);
505 8e278d17 2020-03-18 stsp 	if (close(imsg_idxfds[1]) != 0) {
506 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
507 8e278d17 2020-03-18 stsp 		goto done;
508 8e278d17 2020-03-18 stsp 	}
509 85e8591f 2020-03-18 stsp 	imsg_init(&idxibuf, imsg_idxfds[0]);
510 93658fb9 2020-03-18 stsp 
511 668a20f6 2020-03-18 stsp 	err = got_privsep_send_index_pack_req(&idxibuf, (*pack_hash)->sha1,
512 668a20f6 2020-03-18 stsp 	    npackfd);
513 93658fb9 2020-03-18 stsp 	if (err != NULL)
514 8e278d17 2020-03-18 stsp 		goto done;
515 8e278d17 2020-03-18 stsp 	npackfd = -1;
516 73ab1060 2020-03-18 stsp 	err = got_privsep_send_index_pack_outfd(&idxibuf, nidxfd);
517 93658fb9 2020-03-18 stsp 	if (err != NULL)
518 8e278d17 2020-03-18 stsp 		goto done;
519 8e278d17 2020-03-18 stsp 	nidxfd = -1;
520 4788f1ce 2020-03-18 stsp 	err = got_privsep_send_tmpfd(&idxibuf, tmpfd);
521 4788f1ce 2020-03-18 stsp 	if (err != NULL)
522 4788f1ce 2020-03-18 stsp 		goto done;
523 4788f1ce 2020-03-18 stsp 	tmpfd = -1;
524 baa9fea0 2020-03-18 stsp 	done = 0;
525 baa9fea0 2020-03-18 stsp 	while (!done) {
526 668a20f6 2020-03-18 stsp 		int nobj_total, nobj_indexed, nobj_loose, nobj_resolved;
527 668a20f6 2020-03-18 stsp 
528 668a20f6 2020-03-18 stsp 		err = got_privsep_recv_index_progress(&done, &nobj_total,
529 668a20f6 2020-03-18 stsp 		    &nobj_indexed, &nobj_loose, &nobj_resolved,
530 668a20f6 2020-03-18 stsp 		    &idxibuf);
531 baa9fea0 2020-03-18 stsp 		if (err != NULL)
532 baa9fea0 2020-03-18 stsp 			goto done;
533 668a20f6 2020-03-18 stsp 		if (nobj_indexed != 0) {
534 baa9fea0 2020-03-18 stsp 			err = progress_cb(progress_arg, NULL,
535 668a20f6 2020-03-18 stsp 			    packfile_size, nobj_total,
536 668a20f6 2020-03-18 stsp 			    nobj_indexed, nobj_loose, nobj_resolved);
537 baa9fea0 2020-03-18 stsp 			if (err)
538 baa9fea0 2020-03-18 stsp 				break;
539 baa9fea0 2020-03-18 stsp 		}
540 baa9fea0 2020-03-18 stsp 		imsg_clear(&idxibuf);
541 baa9fea0 2020-03-18 stsp 	}
542 8e278d17 2020-03-18 stsp 	if (close(imsg_idxfds[0]) == -1) {
543 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
544 8e278d17 2020-03-18 stsp 		goto done;
545 8e278d17 2020-03-18 stsp 	}
546 85e8591f 2020-03-18 stsp 	if (waitpid(idxpid, &idxstatus, 0) == -1) {
547 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("waitpid");
548 8e278d17 2020-03-18 stsp 		goto done;
549 8e278d17 2020-03-18 stsp 	}
550 93658fb9 2020-03-18 stsp 
551 d9b4d0c0 2020-03-18 stsp 	err = got_object_id_str(&id_str, *pack_hash);
552 afa77e03 2020-03-18 stsp 	if (err)
553 8e278d17 2020-03-18 stsp 		goto done;
554 66cba96f 2020-03-18 stsp 	if (asprintf(&packpath, "%s/%s/pack-%s.pack",
555 66cba96f 2020-03-18 stsp 	    repo_path, GOT_OBJECTS_PACK_DIR, id_str) == -1) {
556 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
557 8e278d17 2020-03-18 stsp 		goto done;
558 8e278d17 2020-03-18 stsp 	}
559 93658fb9 2020-03-18 stsp 
560 66cba96f 2020-03-18 stsp 	if (asprintf(&idxpath, "%s/%s/pack-%s.idx",
561 66cba96f 2020-03-18 stsp 	    repo_path, GOT_OBJECTS_PACK_DIR, id_str) == -1) {
562 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("asprintf");
563 8e278d17 2020-03-18 stsp 		goto done;
564 8e278d17 2020-03-18 stsp 	}
565 afa77e03 2020-03-18 stsp 
566 8e278d17 2020-03-18 stsp 	if (rename(tmppackpath, packpath) == -1) {
567 8e278d17 2020-03-18 stsp 		err = got_error_from_errno3("rename", tmppackpath, packpath);
568 8e278d17 2020-03-18 stsp 		goto done;
569 8e278d17 2020-03-18 stsp 	}
570 8e278d17 2020-03-18 stsp 	if (rename(tmpidxpath, idxpath) == -1) {
571 8e278d17 2020-03-18 stsp 		err = got_error_from_errno3("rename", tmpidxpath, idxpath);
572 8e278d17 2020-03-18 stsp 		goto done;
573 8e278d17 2020-03-18 stsp 	}
574 ee61b6d3 2020-03-18 stsp 
575 8e278d17 2020-03-18 stsp done:
576 20eb36d0 2020-03-18 stsp 	if (nfetchfd != -1 && close(nfetchfd) == -1 && err == NULL)
577 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
578 8e278d17 2020-03-18 stsp 	if (npackfd != -1 && close(npackfd) == -1 && err == NULL)
579 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
580 8e278d17 2020-03-18 stsp 	if (packfd != -1 && close(packfd) == -1 && err == NULL)
581 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
582 8e278d17 2020-03-18 stsp 	if (idxfd != -1 && close(idxfd) == -1 && err == NULL)
583 8e278d17 2020-03-18 stsp 		err = got_error_from_errno("close");
584 4788f1ce 2020-03-18 stsp 	if (tmpfd != -1 && close(tmpfd) == -1 && err == NULL)
585 4788f1ce 2020-03-18 stsp 		err = got_error_from_errno("close");
586 afa77e03 2020-03-18 stsp 	free(tmppackpath);
587 afa77e03 2020-03-18 stsp 	free(tmpidxpath);
588 fe4e1501 2020-03-18 stsp 	free(idxpath);
589 afa77e03 2020-03-18 stsp 	free(packpath);
590 fe4e1501 2020-03-18 stsp 
591 d9b4d0c0 2020-03-18 stsp 	if (err) {
592 d9b4d0c0 2020-03-18 stsp 		free(*pack_hash);
593 d9b4d0c0 2020-03-18 stsp 		*pack_hash = NULL;
594 d9b4d0c0 2020-03-18 stsp 		TAILQ_FOREACH(pe, refs, entry) {
595 d9b4d0c0 2020-03-18 stsp 			free((void *)pe->path);
596 d9b4d0c0 2020-03-18 stsp 			free(pe->data);
597 d9b4d0c0 2020-03-18 stsp 		}
598 d9b4d0c0 2020-03-18 stsp 		got_pathlist_free(refs);
599 d9b4d0c0 2020-03-18 stsp 		TAILQ_FOREACH(pe, symrefs, entry) {
600 d9b4d0c0 2020-03-18 stsp 			free((void *)pe->path);
601 d9b4d0c0 2020-03-18 stsp 			free(pe->data);
602 d9b4d0c0 2020-03-18 stsp 		}
603 d9b4d0c0 2020-03-18 stsp 		got_pathlist_free(symrefs);
604 d9b4d0c0 2020-03-18 stsp 	}
605 8e278d17 2020-03-18 stsp 	return err;
606 93658fb9 2020-03-18 stsp }