30
31#include <sys/param.h>
32#include <sys/queue.h>
33#include <sys/types.h>
34#include <sys/sbuf.h>
35#include <sys/wait.h>
36
37#define _WITH_GETLINE
38#include <archive.h>
39#include <archive_entry.h>
40#include <dirent.h>
41#include <err.h>
42#include <errno.h>
43#include <fcntl.h>
44#include <fetch.h>
45#include <paths.h>
46#include <stdbool.h>
47#include <stdlib.h>
48#include <stdio.h>
49#include <string.h>
50#include <time.h>
51#include <unistd.h>
52#include <yaml.h>
53
54#include <openssl/err.h>
55#include <openssl/ssl.h>
56
57#include "dns_utils.h"
58#include "config.h"
59
60struct sig_cert {
61 char *name;
62 unsigned char *sig;
63 int siglen;
64 unsigned char *cert;
65 int certlen;
66 bool trusted;
67};
68
69typedef enum {
70 HASH_UNKNOWN,
71 HASH_SHA256,
72} hash_t;
73
74struct fingerprint {
75 hash_t type;
76 char *name;
77 char hash[BUFSIZ];
78 STAILQ_ENTRY(fingerprint) next;
79};
80
81STAILQ_HEAD(fingerprint_list, fingerprint);
82
83static int
84extract_pkg_static(int fd, char *p, int sz)
85{
86 struct archive *a;
87 struct archive_entry *ae;
88 char *end;
89 int ret, r;
90
91 ret = -1;
92 a = archive_read_new();
93 if (a == NULL) {
94 warn("archive_read_new");
95 return (ret);
96 }
97 archive_read_support_filter_all(a);
98 archive_read_support_format_tar(a);
99
100 if (lseek(fd, 0, 0) == -1) {
101 warn("lseek");
102 goto cleanup;
103 }
104
105 if (archive_read_open_fd(a, fd, 4096) != ARCHIVE_OK) {
106 warnx("archive_read_open_fd: %s", archive_error_string(a));
107 goto cleanup;
108 }
109
110 ae = NULL;
111 while ((r = archive_read_next_header(a, &ae)) == ARCHIVE_OK) {
112 end = strrchr(archive_entry_pathname(ae), '/');
113 if (end == NULL)
114 continue;
115
116 if (strcmp(end, "/pkg-static") == 0) {
117 r = archive_read_extract(a, ae,
118 ARCHIVE_EXTRACT_OWNER | ARCHIVE_EXTRACT_PERM |
119 ARCHIVE_EXTRACT_TIME | ARCHIVE_EXTRACT_ACL |
120 ARCHIVE_EXTRACT_FFLAGS | ARCHIVE_EXTRACT_XATTR);
121 strlcpy(p, archive_entry_pathname(ae), sz);
122 break;
123 }
124 }
125
126 if (r == ARCHIVE_OK)
127 ret = 0;
128 else
129 warnx("fail to extract pkg-static");
130
131cleanup:
132 archive_read_free(a);
133 return (ret);
134
135}
136
137static int
138install_pkg_static(const char *path, const char *pkgpath, bool force)
139{
140 int pstat;
141 pid_t pid;
142
143 switch ((pid = fork())) {
144 case -1:
145 return (-1);
146 case 0:
147 if (force)
148 execl(path, "pkg-static", "add", "-f", pkgpath,
149 (char *)NULL);
150 else
151 execl(path, "pkg-static", "add", pkgpath,
152 (char *)NULL);
153 _exit(1);
154 default:
155 break;
156 }
157
158 while (waitpid(pid, &pstat, 0) == -1)
159 if (errno != EINTR)
160 return (-1);
161
162 if (WEXITSTATUS(pstat))
163 return (WEXITSTATUS(pstat));
164 else if (WIFSIGNALED(pstat))
165 return (128 & (WTERMSIG(pstat)));
166 return (pstat);
167}
168
169static int
170fetch_to_fd(const char *url, char *path)
171{
172 struct url *u;
173 struct dns_srvinfo *mirrors, *current;
174 struct url_stat st;
175 FILE *remote;
176 /* To store _https._tcp. + hostname + \0 */
177 int fd;
178 int retry, max_retry;
179 off_t done, r;
180 time_t now, last;
181 char buf[10240];
182 char zone[MAXHOSTNAMELEN + 13];
183 static const char *mirror_type = NULL;
184
185 done = 0;
186 last = 0;
187 max_retry = 3;
188 current = mirrors = NULL;
189 remote = NULL;
190
191 if (mirror_type == NULL && config_string(MIRROR_TYPE, &mirror_type)
192 != 0) {
193 warnx("No MIRROR_TYPE defined");
194 return (-1);
195 }
196
197 if ((fd = mkstemp(path)) == -1) {
198 warn("mkstemp()");
199 return (-1);
200 }
201
202 retry = max_retry;
203
204 u = fetchParseURL(url);
205 while (remote == NULL) {
206 if (retry == max_retry) {
207 if (strcmp(u->scheme, "file") != 0 &&
208 strcasecmp(mirror_type, "srv") == 0) {
209 snprintf(zone, sizeof(zone),
210 "_%s._tcp.%s", u->scheme, u->host);
211 mirrors = dns_getsrvinfo(zone);
212 current = mirrors;
213 }
214 }
215
216 if (mirrors != NULL) {
217 strlcpy(u->host, current->host, sizeof(u->host));
218 u->port = current->port;
219 }
220
221 remote = fetchXGet(u, &st, "");
222 if (remote == NULL) {
223 --retry;
224 if (retry <= 0)
225 goto fetchfail;
226 if (mirrors == NULL) {
227 sleep(1);
228 } else {
229 current = current->next;
230 if (current == NULL)
231 current = mirrors;
232 }
233 }
234 }
235
236 if (remote == NULL)
237 goto fetchfail;
238
239 while (done < st.size) {
240 if ((r = fread(buf, 1, sizeof(buf), remote)) < 1)
241 break;
242
243 if (write(fd, buf, r) != r) {
244 warn("write()");
245 goto fetchfail;
246 }
247
248 done += r;
249 now = time(NULL);
250 if (now > last || done == st.size)
251 last = now;
252 }
253
254 if (ferror(remote))
255 goto fetchfail;
256
257 goto cleanup;
258
259fetchfail:
260 if (fd != -1) {
261 close(fd);
262 fd = -1;
263 unlink(path);
264 }
265
266cleanup:
267 if (remote != NULL)
268 fclose(remote);
269
270 return fd;
271}
272
273static struct fingerprint *
274parse_fingerprint(yaml_document_t *doc, yaml_node_t *node)
275{
276 yaml_node_pair_t *pair;
277 yaml_char_t *function, *fp;
278 struct fingerprint *f;
279 hash_t fct = HASH_UNKNOWN;
280
281 function = fp = NULL;
282
283 pair = node->data.mapping.pairs.start;
284 while (pair < node->data.mapping.pairs.top) {
285 yaml_node_t *key = yaml_document_get_node(doc, pair->key);
286 yaml_node_t *val = yaml_document_get_node(doc, pair->value);
287
288 if (key->data.scalar.length <= 0) {
289 ++pair;
290 continue;
291 }
292
293 if (val->type != YAML_SCALAR_NODE) {
294 ++pair;
295 continue;
296 }
297
298 if (strcasecmp(key->data.scalar.value, "function") == 0)
299 function = val->data.scalar.value;
300 else if (strcasecmp(key->data.scalar.value, "fingerprint")
301 == 0)
302 fp = val->data.scalar.value;
303
304 ++pair;
305 continue;
306 }
307
308 if (fp == NULL || function == NULL)
309 return (NULL);
310
311 if (strcasecmp(function, "sha256") == 0)
312 fct = HASH_SHA256;
313
314 if (fct == HASH_UNKNOWN) {
315 fprintf(stderr, "Unsupported hashing function: %s\n", function);
316 return (NULL);
317 }
318
319 f = calloc(1, sizeof(struct fingerprint));
320 f->type = fct;
321 strlcpy(f->hash, fp, sizeof(f->hash));
322
323 return (f);
324}
325
326static void
327free_fingerprint_list(struct fingerprint_list* list)
328{
| 30
31#include <sys/param.h>
32#include <sys/queue.h>
33#include <sys/types.h>
34#include <sys/sbuf.h>
35#include <sys/wait.h>
36
37#define _WITH_GETLINE
38#include <archive.h>
39#include <archive_entry.h>
40#include <dirent.h>
41#include <err.h>
42#include <errno.h>
43#include <fcntl.h>
44#include <fetch.h>
45#include <paths.h>
46#include <stdbool.h>
47#include <stdlib.h>
48#include <stdio.h>
49#include <string.h>
50#include <time.h>
51#include <unistd.h>
52#include <yaml.h>
53
54#include <openssl/err.h>
55#include <openssl/ssl.h>
56
57#include "dns_utils.h"
58#include "config.h"
59
60struct sig_cert {
61 char *name;
62 unsigned char *sig;
63 int siglen;
64 unsigned char *cert;
65 int certlen;
66 bool trusted;
67};
68
69typedef enum {
70 HASH_UNKNOWN,
71 HASH_SHA256,
72} hash_t;
73
74struct fingerprint {
75 hash_t type;
76 char *name;
77 char hash[BUFSIZ];
78 STAILQ_ENTRY(fingerprint) next;
79};
80
81STAILQ_HEAD(fingerprint_list, fingerprint);
82
83static int
84extract_pkg_static(int fd, char *p, int sz)
85{
86 struct archive *a;
87 struct archive_entry *ae;
88 char *end;
89 int ret, r;
90
91 ret = -1;
92 a = archive_read_new();
93 if (a == NULL) {
94 warn("archive_read_new");
95 return (ret);
96 }
97 archive_read_support_filter_all(a);
98 archive_read_support_format_tar(a);
99
100 if (lseek(fd, 0, 0) == -1) {
101 warn("lseek");
102 goto cleanup;
103 }
104
105 if (archive_read_open_fd(a, fd, 4096) != ARCHIVE_OK) {
106 warnx("archive_read_open_fd: %s", archive_error_string(a));
107 goto cleanup;
108 }
109
110 ae = NULL;
111 while ((r = archive_read_next_header(a, &ae)) == ARCHIVE_OK) {
112 end = strrchr(archive_entry_pathname(ae), '/');
113 if (end == NULL)
114 continue;
115
116 if (strcmp(end, "/pkg-static") == 0) {
117 r = archive_read_extract(a, ae,
118 ARCHIVE_EXTRACT_OWNER | ARCHIVE_EXTRACT_PERM |
119 ARCHIVE_EXTRACT_TIME | ARCHIVE_EXTRACT_ACL |
120 ARCHIVE_EXTRACT_FFLAGS | ARCHIVE_EXTRACT_XATTR);
121 strlcpy(p, archive_entry_pathname(ae), sz);
122 break;
123 }
124 }
125
126 if (r == ARCHIVE_OK)
127 ret = 0;
128 else
129 warnx("fail to extract pkg-static");
130
131cleanup:
132 archive_read_free(a);
133 return (ret);
134
135}
136
137static int
138install_pkg_static(const char *path, const char *pkgpath, bool force)
139{
140 int pstat;
141 pid_t pid;
142
143 switch ((pid = fork())) {
144 case -1:
145 return (-1);
146 case 0:
147 if (force)
148 execl(path, "pkg-static", "add", "-f", pkgpath,
149 (char *)NULL);
150 else
151 execl(path, "pkg-static", "add", pkgpath,
152 (char *)NULL);
153 _exit(1);
154 default:
155 break;
156 }
157
158 while (waitpid(pid, &pstat, 0) == -1)
159 if (errno != EINTR)
160 return (-1);
161
162 if (WEXITSTATUS(pstat))
163 return (WEXITSTATUS(pstat));
164 else if (WIFSIGNALED(pstat))
165 return (128 & (WTERMSIG(pstat)));
166 return (pstat);
167}
168
169static int
170fetch_to_fd(const char *url, char *path)
171{
172 struct url *u;
173 struct dns_srvinfo *mirrors, *current;
174 struct url_stat st;
175 FILE *remote;
176 /* To store _https._tcp. + hostname + \0 */
177 int fd;
178 int retry, max_retry;
179 off_t done, r;
180 time_t now, last;
181 char buf[10240];
182 char zone[MAXHOSTNAMELEN + 13];
183 static const char *mirror_type = NULL;
184
185 done = 0;
186 last = 0;
187 max_retry = 3;
188 current = mirrors = NULL;
189 remote = NULL;
190
191 if (mirror_type == NULL && config_string(MIRROR_TYPE, &mirror_type)
192 != 0) {
193 warnx("No MIRROR_TYPE defined");
194 return (-1);
195 }
196
197 if ((fd = mkstemp(path)) == -1) {
198 warn("mkstemp()");
199 return (-1);
200 }
201
202 retry = max_retry;
203
204 u = fetchParseURL(url);
205 while (remote == NULL) {
206 if (retry == max_retry) {
207 if (strcmp(u->scheme, "file") != 0 &&
208 strcasecmp(mirror_type, "srv") == 0) {
209 snprintf(zone, sizeof(zone),
210 "_%s._tcp.%s", u->scheme, u->host);
211 mirrors = dns_getsrvinfo(zone);
212 current = mirrors;
213 }
214 }
215
216 if (mirrors != NULL) {
217 strlcpy(u->host, current->host, sizeof(u->host));
218 u->port = current->port;
219 }
220
221 remote = fetchXGet(u, &st, "");
222 if (remote == NULL) {
223 --retry;
224 if (retry <= 0)
225 goto fetchfail;
226 if (mirrors == NULL) {
227 sleep(1);
228 } else {
229 current = current->next;
230 if (current == NULL)
231 current = mirrors;
232 }
233 }
234 }
235
236 if (remote == NULL)
237 goto fetchfail;
238
239 while (done < st.size) {
240 if ((r = fread(buf, 1, sizeof(buf), remote)) < 1)
241 break;
242
243 if (write(fd, buf, r) != r) {
244 warn("write()");
245 goto fetchfail;
246 }
247
248 done += r;
249 now = time(NULL);
250 if (now > last || done == st.size)
251 last = now;
252 }
253
254 if (ferror(remote))
255 goto fetchfail;
256
257 goto cleanup;
258
259fetchfail:
260 if (fd != -1) {
261 close(fd);
262 fd = -1;
263 unlink(path);
264 }
265
266cleanup:
267 if (remote != NULL)
268 fclose(remote);
269
270 return fd;
271}
272
273static struct fingerprint *
274parse_fingerprint(yaml_document_t *doc, yaml_node_t *node)
275{
276 yaml_node_pair_t *pair;
277 yaml_char_t *function, *fp;
278 struct fingerprint *f;
279 hash_t fct = HASH_UNKNOWN;
280
281 function = fp = NULL;
282
283 pair = node->data.mapping.pairs.start;
284 while (pair < node->data.mapping.pairs.top) {
285 yaml_node_t *key = yaml_document_get_node(doc, pair->key);
286 yaml_node_t *val = yaml_document_get_node(doc, pair->value);
287
288 if (key->data.scalar.length <= 0) {
289 ++pair;
290 continue;
291 }
292
293 if (val->type != YAML_SCALAR_NODE) {
294 ++pair;
295 continue;
296 }
297
298 if (strcasecmp(key->data.scalar.value, "function") == 0)
299 function = val->data.scalar.value;
300 else if (strcasecmp(key->data.scalar.value, "fingerprint")
301 == 0)
302 fp = val->data.scalar.value;
303
304 ++pair;
305 continue;
306 }
307
308 if (fp == NULL || function == NULL)
309 return (NULL);
310
311 if (strcasecmp(function, "sha256") == 0)
312 fct = HASH_SHA256;
313
314 if (fct == HASH_UNKNOWN) {
315 fprintf(stderr, "Unsupported hashing function: %s\n", function);
316 return (NULL);
317 }
318
319 f = calloc(1, sizeof(struct fingerprint));
320 f->type = fct;
321 strlcpy(f->hash, fp, sizeof(f->hash));
322
323 return (f);
324}
325
326static void
327free_fingerprint_list(struct fingerprint_list* list)
328{
|
332 if (fingerprint->name)
333 free(fingerprint->name);
334 free(fingerprint);
335 }
336 free(list);
337}
338
339static struct fingerprint *
340load_fingerprint(const char *dir, const char *filename)
341{
342 yaml_parser_t parser;
343 yaml_document_t doc;
344 yaml_node_t *node;
345 FILE *fp;
346 struct fingerprint *f;
347 char path[MAXPATHLEN];
348
349 f = NULL;
350
351 snprintf(path, MAXPATHLEN, "%s/%s", dir, filename);
352
353 if ((fp = fopen(path, "r")) == NULL)
354 return (NULL);
355
356 yaml_parser_initialize(&parser);
357 yaml_parser_set_input_file(&parser, fp);
358 yaml_parser_load(&parser, &doc);
359
360 node = yaml_document_get_root_node(&doc);
361 if (node == NULL || node->type != YAML_MAPPING_NODE)
362 goto out;
363
364 f = parse_fingerprint(&doc, node);
365 f->name = strdup(filename);
366
367out:
368 yaml_document_delete(&doc);
369 yaml_parser_delete(&parser);
370 fclose(fp);
371
372 return (f);
373}
374
375static struct fingerprint_list *
376load_fingerprints(const char *path, int *count)
377{
378 DIR *d;
379 struct dirent *ent;
380 struct fingerprint *finger;
381 struct fingerprint_list *fingerprints;
382
383 *count = 0;
384
385 fingerprints = calloc(1, sizeof(struct fingerprint_list));
386 if (fingerprints == NULL)
387 return (NULL);
388 STAILQ_INIT(fingerprints);
389
390 if ((d = opendir(path)) == NULL)
391 return (NULL);
392
393 while ((ent = readdir(d))) {
394 if (strcmp(ent->d_name, ".") == 0 ||
395 strcmp(ent->d_name, "..") == 0)
396 continue;
397 finger = load_fingerprint(path, ent->d_name);
398 if (finger != NULL) {
399 STAILQ_INSERT_TAIL(fingerprints, finger, next);
400 ++(*count);
401 }
402 }
403
404 closedir(d);
405
406 return (fingerprints);
407}
408
409static void
410sha256_hash(unsigned char hash[SHA256_DIGEST_LENGTH],
411 char out[SHA256_DIGEST_LENGTH * 2 + 1])
412{
413 int i;
414
415 for (i = 0; i < SHA256_DIGEST_LENGTH; i++)
416 sprintf(out + (i * 2), "%02x", hash[i]);
417
418 out[SHA256_DIGEST_LENGTH * 2] = '\0';
419}
420
421static void
422sha256_buf(char *buf, size_t len, char out[SHA256_DIGEST_LENGTH * 2 + 1])
423{
424 unsigned char hash[SHA256_DIGEST_LENGTH];
425 SHA256_CTX sha256;
426
427 out[0] = '\0';
428
429 SHA256_Init(&sha256);
430 SHA256_Update(&sha256, buf, len);
431 SHA256_Final(hash, &sha256);
432 sha256_hash(hash, out);
433}
434
435static int
436sha256_fd(int fd, char out[SHA256_DIGEST_LENGTH * 2 + 1])
437{
438 int my_fd;
439 FILE *fp;
440 char buffer[BUFSIZ];
441 unsigned char hash[SHA256_DIGEST_LENGTH];
442 size_t r;
443 int ret;
444 SHA256_CTX sha256;
445
446 my_fd = -1;
447 fp = NULL;
448 r = 0;
449 ret = 1;
450
451 out[0] = '\0';
452
453 /* Duplicate the fd so that fclose(3) does not close it. */
454 if ((my_fd = dup(fd)) == -1) {
455 warnx("dup");
456 goto cleanup;
457 }
458
459 if ((fp = fdopen(my_fd, "rb")) == NULL) {
460 warnx("fdopen");
461 goto cleanup;
462 }
463
464 SHA256_Init(&sha256);
465
466 while ((r = fread(buffer, 1, BUFSIZ, fp)) > 0)
467 SHA256_Update(&sha256, buffer, r);
468
469 if (ferror(fp) != 0) {
470 warnx("fread");
471 goto cleanup;
472 }
473
474 SHA256_Final(hash, &sha256);
475 sha256_hash(hash, out);
476 ret = 0;
477
478cleanup:
479 if (fp != NULL)
480 fclose(fp);
481 else if (my_fd != -1)
482 close(my_fd);
483 (void)lseek(fd, 0, SEEK_SET);
484
485 return (ret);
486}
487
488static EVP_PKEY *
489load_public_key_buf(const unsigned char *cert, int certlen)
490{
491 EVP_PKEY *pkey;
492 BIO *bp;
493 char errbuf[1024];
494
495 bp = BIO_new_mem_buf(__DECONST(void *, cert), certlen);
496
497 if ((pkey = PEM_read_bio_PUBKEY(bp, NULL, NULL, NULL)) == NULL)
498 warnx("%s", ERR_error_string(ERR_get_error(), errbuf));
499
500 BIO_free(bp);
501
502 return (pkey);
503}
504
505static bool
506rsa_verify_cert(int fd, const unsigned char *key, int keylen,
507 unsigned char *sig, int siglen)
508{
509 EVP_MD_CTX *mdctx;
510 EVP_PKEY *pkey;
511 char sha256[(SHA256_DIGEST_LENGTH * 2) + 2];
512 char errbuf[1024];
513 bool ret;
514
515 pkey = NULL;
516 mdctx = NULL;
517 ret = false;
518
519 /* Compute SHA256 of the package. */
520 if (lseek(fd, 0, 0) == -1) {
521 warn("lseek");
522 goto cleanup;
523 }
524 if ((sha256_fd(fd, sha256)) == -1) {
525 warnx("Error creating SHA256 hash for package");
526 goto cleanup;
527 }
528
529 if ((pkey = load_public_key_buf(key, keylen)) == NULL) {
530 warnx("Error reading public key");
531 goto cleanup;
532 }
533
534 /* Verify signature of the SHA256(pkg) is valid. */
535 if ((mdctx = EVP_MD_CTX_create()) == NULL) {
536 warnx("%s", ERR_error_string(ERR_get_error(), errbuf));
537 goto error;
538 }
539
540 if (EVP_DigestVerifyInit(mdctx, NULL, EVP_sha256(), NULL, pkey) != 1) {
541 warnx("%s", ERR_error_string(ERR_get_error(), errbuf));
542 goto error;
543 }
544 if (EVP_DigestVerifyUpdate(mdctx, sha256, strlen(sha256)) != 1) {
545 warnx("%s", ERR_error_string(ERR_get_error(), errbuf));
546 goto error;
547 }
548
549 if (EVP_DigestVerifyFinal(mdctx, sig, siglen) != 1) {
550 warnx("%s", ERR_error_string(ERR_get_error(), errbuf));
551 goto error;
552 }
553
554 ret = true;
555 printf("done\n");
556 goto cleanup;
557
558error:
559 printf("failed\n");
560
561cleanup:
562 if (pkey)
563 EVP_PKEY_free(pkey);
564 if (mdctx)
565 EVP_MD_CTX_destroy(mdctx);
566 ERR_free_strings();
567
568 return (ret);
569}
570
571static struct sig_cert *
572parse_cert(int fd) {
573 int my_fd;
574 struct sig_cert *sc;
575 FILE *fp;
576 struct sbuf *buf, *sig, *cert;
577 char *line;
578 size_t linecap;
579 ssize_t linelen;
580
581 buf = NULL;
582 my_fd = -1;
583 sc = NULL;
584 line = NULL;
585 linecap = 0;
586
587 if (lseek(fd, 0, 0) == -1) {
588 warn("lseek");
589 return (NULL);
590 }
591
592 /* Duplicate the fd so that fclose(3) does not close it. */
593 if ((my_fd = dup(fd)) == -1) {
594 warnx("dup");
595 return (NULL);
596 }
597
598 if ((fp = fdopen(my_fd, "rb")) == NULL) {
599 warn("fdopen");
600 close(my_fd);
601 return (NULL);
602 }
603
604 sig = sbuf_new_auto();
605 cert = sbuf_new_auto();
606
607 while ((linelen = getline(&line, &linecap, fp)) > 0) {
608 if (strcmp(line, "SIGNATURE\n") == 0) {
609 buf = sig;
610 continue;
611 } else if (strcmp(line, "CERT\n") == 0) {
612 buf = cert;
613 continue;
614 } else if (strcmp(line, "END\n") == 0) {
615 break;
616 }
617 if (buf != NULL)
618 sbuf_bcat(buf, line, linelen);
619 }
620
621 fclose(fp);
622
623 /* Trim out unrelated trailing newline */
624 sbuf_setpos(sig, sbuf_len(sig) - 1);
625
626 sbuf_finish(sig);
627 sbuf_finish(cert);
628
629 sc = calloc(1, sizeof(struct sig_cert));
630 sc->siglen = sbuf_len(sig);
631 sc->sig = calloc(1, sc->siglen);
632 memcpy(sc->sig, sbuf_data(sig), sc->siglen);
633
634 sc->certlen = sbuf_len(cert);
635 sc->cert = strdup(sbuf_data(cert));
636
637 sbuf_delete(sig);
638 sbuf_delete(cert);
639
640 return (sc);
641}
642
643static bool
644verify_signature(int fd_pkg, int fd_sig)
645{
646 struct fingerprint_list *trusted, *revoked;
647 struct fingerprint *fingerprint;
648 struct sig_cert *sc;
649 bool ret;
650 int trusted_count, revoked_count;
651 const char *fingerprints;
652 char path[MAXPATHLEN];
653 char hash[SHA256_DIGEST_LENGTH * 2 + 1];
654
655 sc = NULL;
656 trusted = revoked = NULL;
657 ret = false;
658
659 /* Read and parse fingerprints. */
660 if (config_string(FINGERPRINTS, &fingerprints) != 0) {
661 warnx("No CONFIG_FINGERPRINTS defined");
662 goto cleanup;
663 }
664
665 snprintf(path, MAXPATHLEN, "%s/trusted", fingerprints);
666 if ((trusted = load_fingerprints(path, &trusted_count)) == NULL) {
667 warnx("Error loading trusted certificates");
668 goto cleanup;
669 }
670
671 if (trusted_count == 0 || trusted == NULL) {
672 fprintf(stderr, "No trusted certificates found.\n");
673 goto cleanup;
674 }
675
676 snprintf(path, MAXPATHLEN, "%s/revoked", fingerprints);
677 if ((revoked = load_fingerprints(path, &revoked_count)) == NULL) {
678 warnx("Error loading revoked certificates");
679 goto cleanup;
680 }
681
682 /* Read certificate and signature in. */
683 if ((sc = parse_cert(fd_sig)) == NULL) {
684 warnx("Error parsing certificate");
685 goto cleanup;
686 }
687 /* Explicitly mark as non-trusted until proven otherwise. */
688 sc->trusted = false;
689
690 /* Parse signature and pubkey out of the certificate */
691 sha256_buf(sc->cert, sc->certlen, hash);
692
693 /* Check if this hash is revoked */
694 if (revoked != NULL) {
695 STAILQ_FOREACH(fingerprint, revoked, next) {
696 if (strcasecmp(fingerprint->hash, hash) == 0) {
697 fprintf(stderr, "The package was signed with "
698 "revoked certificate %s\n",
699 fingerprint->name);
700 goto cleanup;
701 }
702 }
703 }
704
705 STAILQ_FOREACH(fingerprint, trusted, next) {
706 if (strcasecmp(fingerprint->hash, hash) == 0) {
707 sc->trusted = true;
708 sc->name = strdup(fingerprint->name);
709 break;
710 }
711 }
712
713 if (sc->trusted == false) {
714 fprintf(stderr, "No trusted fingerprint found matching "
715 "package's certificate\n");
716 goto cleanup;
717 }
718
719 /* Verify the signature. */
720 printf("Verifying signature with trusted certificate %s... ", sc->name);
721 if (rsa_verify_cert(fd_pkg, sc->cert, sc->certlen, sc->sig,
722 sc->siglen) == false) {
723 fprintf(stderr, "Signature is not valid\n");
724 goto cleanup;
725 }
726
727 ret = true;
728
729cleanup:
730 if (trusted)
731 free_fingerprint_list(trusted);
732 if (revoked)
733 free_fingerprint_list(revoked);
734 if (sc) {
735 if (sc->cert)
736 free(sc->cert);
737 if (sc->sig)
738 free(sc->sig);
739 if (sc->name)
740 free(sc->name);
741 free(sc);
742 }
743
744 return (ret);
745}
746
747static int
748bootstrap_pkg(bool force)
749{
750 FILE *config;
751 int fd_pkg, fd_sig;
752 int ret;
753 char *site;
754 char url[MAXPATHLEN];
755 char conf[MAXPATHLEN];
756 char tmppkg[MAXPATHLEN];
757 char tmpsig[MAXPATHLEN];
758 const char *packagesite;
759 const char *signature_type;
760 char pkgstatic[MAXPATHLEN];
761
762 fd_sig = -1;
763 ret = -1;
764 config = NULL;
765
766 if (config_string(PACKAGESITE, &packagesite) != 0) {
767 warnx("No PACKAGESITE defined");
768 return (-1);
769 }
770
771 if (config_string(SIGNATURE_TYPE, &signature_type) != 0) {
772 warnx("Error looking up SIGNATURE_TYPE");
773 return (-1);
774 }
775
776 printf("Bootstrapping pkg from %s, please wait...\n", packagesite);
777
778 /* Support pkg+http:// for PACKAGESITE which is the new format
779 in 1.2 to avoid confusion on why http://pkg.FreeBSD.org has
780 no A record. */
781 if (strncmp(URL_SCHEME_PREFIX, packagesite,
782 strlen(URL_SCHEME_PREFIX)) == 0)
783 packagesite += strlen(URL_SCHEME_PREFIX);
784 snprintf(url, MAXPATHLEN, "%s/Latest/pkg.txz", packagesite);
785
786 snprintf(tmppkg, MAXPATHLEN, "%s/pkg.txz.XXXXXX",
787 getenv("TMPDIR") ? getenv("TMPDIR") : _PATH_TMP);
788
789 if ((fd_pkg = fetch_to_fd(url, tmppkg)) == -1)
790 goto fetchfail;
791
792 if (signature_type != NULL &&
793 strcasecmp(signature_type, "FINGERPRINTS") == 0) {
794 snprintf(tmpsig, MAXPATHLEN, "%s/pkg.txz.sig.XXXXXX",
795 getenv("TMPDIR") ? getenv("TMPDIR") : _PATH_TMP);
796 snprintf(url, MAXPATHLEN, "%s/Latest/pkg.txz.sig",
797 packagesite);
798
799 if ((fd_sig = fetch_to_fd(url, tmpsig)) == -1) {
800 fprintf(stderr, "Signature for pkg not available.\n");
801 goto fetchfail;
802 }
803
804 if (verify_signature(fd_pkg, fd_sig) == false)
805 goto cleanup;
806 }
807
808 if ((ret = extract_pkg_static(fd_pkg, pkgstatic, MAXPATHLEN)) == 0)
809 ret = install_pkg_static(pkgstatic, tmppkg, force);
810
811 snprintf(conf, MAXPATHLEN, "%s/etc/pkg.conf",
812 getenv("LOCALBASE") ? getenv("LOCALBASE") : _LOCALBASE);
813
814 if (access(conf, R_OK) == -1) {
815 site = strrchr(url, '/');
816 if (site == NULL)
817 goto cleanup;
818 site[0] = '\0';
819 site = strrchr(url, '/');
820 if (site == NULL)
821 goto cleanup;
822 site[0] = '\0';
823
824 config = fopen(conf, "w+");
825 if (config == NULL)
826 goto cleanup;
827 fprintf(config, "packagesite: %s\n", url);
828 fclose(config);
829 }
830
831 goto cleanup;
832
833fetchfail:
834 warnx("Error fetching %s: %s", url, fetchLastErrString);
835 fprintf(stderr, "A pre-built version of pkg could not be found for "
836 "your system.\n");
837 fprintf(stderr, "Consider changing PACKAGESITE or installing it from "
838 "ports: 'ports-mgmt/pkg'.\n");
839
840cleanup:
841 if (fd_sig != -1) {
842 close(fd_sig);
843 unlink(tmpsig);
844 }
845 close(fd_pkg);
846 unlink(tmppkg);
847
848 return (ret);
849}
850
851static const char confirmation_message[] =
852"The package management tool is not yet installed on your system.\n"
853"Do you want to fetch and install it now? [y/N]: ";
854
855static int
856pkg_query_yes_no(void)
857{
858 int ret, c;
859
860 c = getchar();
861
862 if (c == 'y' || c == 'Y')
863 ret = 1;
864 else
865 ret = 0;
866
867 while (c != '\n' && c != EOF)
868 c = getchar();
869
870 return (ret);
871}
872
873static int
874bootstrap_pkg_local(const char *pkgpath, bool force)
875{
876 char path[MAXPATHLEN];
877 char pkgstatic[MAXPATHLEN];
878 const char *signature_type;
879 int fd_pkg, fd_sig, ret;
880
881 fd_sig = -1;
882 ret = -1;
883
884 fd_pkg = open(pkgpath, O_RDONLY);
885 if (fd_pkg == -1)
886 err(EXIT_FAILURE, "Unable to open %s", pkgpath);
887
888 if (config_string(SIGNATURE_TYPE, &signature_type) != 0) {
889 warnx("Error looking up SIGNATURE_TYPE");
890 return (-1);
891 }
892 if (signature_type != NULL &&
893 strcasecmp(signature_type, "FINGERPRINTS") == 0) {
894 snprintf(path, sizeof(path), "%s.sig", pkgpath);
895
896 if ((fd_sig = open(path, O_RDONLY)) == -1) {
897 fprintf(stderr, "Signature for pkg not available.\n");
898 goto cleanup;
899 }
900
901 if (verify_signature(fd_pkg, fd_sig) == false)
902 goto cleanup;
903 }
904
905 if ((ret = extract_pkg_static(fd_pkg, pkgstatic, MAXPATHLEN)) == 0)
906 ret = install_pkg_static(pkgstatic, pkgpath, force);
907
908cleanup:
909 close(fd_pkg);
910 if (fd_sig != -1)
911 close(fd_sig);
912
913 return (ret);
914}
915
916int
917main(__unused int argc, char *argv[])
918{
919 char pkgpath[MAXPATHLEN];
920 const char *pkgarg;
921 bool bootstrap_only, force, yes;
922
923 bootstrap_only = false;
924 force = false;
925 pkgarg = NULL;
926 yes = false;
927
928 snprintf(pkgpath, MAXPATHLEN, "%s/sbin/pkg",
929 getenv("LOCALBASE") ? getenv("LOCALBASE") : _LOCALBASE);
930
931 if (argc > 1 && strcmp(argv[1], "bootstrap") == 0) {
932 bootstrap_only = true;
933 if (argc == 3 && strcmp(argv[2], "-f") == 0)
934 force = true;
935 }
936
937 if ((bootstrap_only && force) || access(pkgpath, X_OK) == -1) {
938 /*
939 * To allow 'pkg -N' to be used as a reliable test for whether
940 * a system is configured to use pkg, don't bootstrap pkg
941 * when that argument is given as argv[1].
942 */
943 if (argv[1] != NULL && strcmp(argv[1], "-N") == 0)
944 errx(EXIT_FAILURE, "pkg is not installed");
945
946 config_init();
947
948 if (argc > 1 && strcmp(argv[1], "add") == 0) {
949 if (argc > 2 && strcmp(argv[2], "-f") == 0) {
950 force = true;
951 pkgarg = argv[3];
952 } else
953 pkgarg = argv[2];
954 if (pkgarg == NULL) {
955 fprintf(stderr, "Path to pkg.txz required\n");
956 exit(EXIT_FAILURE);
957 }
958 if (access(pkgarg, R_OK) == -1) {
959 fprintf(stderr, "No such file: %s\n", pkgarg);
960 exit(EXIT_FAILURE);
961 }
962 if (bootstrap_pkg_local(pkgarg, force) != 0)
963 exit(EXIT_FAILURE);
964 exit(EXIT_SUCCESS);
965 }
966 /*
967 * Do not ask for confirmation if either of stdin or stdout is
968 * not tty. Check the environment to see if user has answer
969 * tucked in there already.
970 */
971 config_bool(ASSUME_ALWAYS_YES, &yes);
972 if (!yes) {
973 printf("%s", confirmation_message);
974 if (!isatty(fileno(stdin)))
975 exit(EXIT_FAILURE);
976
977 if (pkg_query_yes_no() == 0)
978 exit(EXIT_FAILURE);
979 }
980 if (bootstrap_pkg(force) != 0)
981 exit(EXIT_FAILURE);
982 config_finish();
983
984 if (bootstrap_only)
985 exit(EXIT_SUCCESS);
986 } else if (bootstrap_only) {
987 printf("pkg already bootstrapped at %s\n", pkgpath);
988 exit(EXIT_SUCCESS);
989 }
990
991 execv(pkgpath, argv);
992
993 /* NOT REACHED */
994 return (EXIT_FAILURE);
995}
| 332 if (fingerprint->name)
333 free(fingerprint->name);
334 free(fingerprint);
335 }
336 free(list);
337}
338
339static struct fingerprint *
340load_fingerprint(const char *dir, const char *filename)
341{
342 yaml_parser_t parser;
343 yaml_document_t doc;
344 yaml_node_t *node;
345 FILE *fp;
346 struct fingerprint *f;
347 char path[MAXPATHLEN];
348
349 f = NULL;
350
351 snprintf(path, MAXPATHLEN, "%s/%s", dir, filename);
352
353 if ((fp = fopen(path, "r")) == NULL)
354 return (NULL);
355
356 yaml_parser_initialize(&parser);
357 yaml_parser_set_input_file(&parser, fp);
358 yaml_parser_load(&parser, &doc);
359
360 node = yaml_document_get_root_node(&doc);
361 if (node == NULL || node->type != YAML_MAPPING_NODE)
362 goto out;
363
364 f = parse_fingerprint(&doc, node);
365 f->name = strdup(filename);
366
367out:
368 yaml_document_delete(&doc);
369 yaml_parser_delete(&parser);
370 fclose(fp);
371
372 return (f);
373}
374
375static struct fingerprint_list *
376load_fingerprints(const char *path, int *count)
377{
378 DIR *d;
379 struct dirent *ent;
380 struct fingerprint *finger;
381 struct fingerprint_list *fingerprints;
382
383 *count = 0;
384
385 fingerprints = calloc(1, sizeof(struct fingerprint_list));
386 if (fingerprints == NULL)
387 return (NULL);
388 STAILQ_INIT(fingerprints);
389
390 if ((d = opendir(path)) == NULL)
391 return (NULL);
392
393 while ((ent = readdir(d))) {
394 if (strcmp(ent->d_name, ".") == 0 ||
395 strcmp(ent->d_name, "..") == 0)
396 continue;
397 finger = load_fingerprint(path, ent->d_name);
398 if (finger != NULL) {
399 STAILQ_INSERT_TAIL(fingerprints, finger, next);
400 ++(*count);
401 }
402 }
403
404 closedir(d);
405
406 return (fingerprints);
407}
408
409static void
410sha256_hash(unsigned char hash[SHA256_DIGEST_LENGTH],
411 char out[SHA256_DIGEST_LENGTH * 2 + 1])
412{
413 int i;
414
415 for (i = 0; i < SHA256_DIGEST_LENGTH; i++)
416 sprintf(out + (i * 2), "%02x", hash[i]);
417
418 out[SHA256_DIGEST_LENGTH * 2] = '\0';
419}
420
421static void
422sha256_buf(char *buf, size_t len, char out[SHA256_DIGEST_LENGTH * 2 + 1])
423{
424 unsigned char hash[SHA256_DIGEST_LENGTH];
425 SHA256_CTX sha256;
426
427 out[0] = '\0';
428
429 SHA256_Init(&sha256);
430 SHA256_Update(&sha256, buf, len);
431 SHA256_Final(hash, &sha256);
432 sha256_hash(hash, out);
433}
434
435static int
436sha256_fd(int fd, char out[SHA256_DIGEST_LENGTH * 2 + 1])
437{
438 int my_fd;
439 FILE *fp;
440 char buffer[BUFSIZ];
441 unsigned char hash[SHA256_DIGEST_LENGTH];
442 size_t r;
443 int ret;
444 SHA256_CTX sha256;
445
446 my_fd = -1;
447 fp = NULL;
448 r = 0;
449 ret = 1;
450
451 out[0] = '\0';
452
453 /* Duplicate the fd so that fclose(3) does not close it. */
454 if ((my_fd = dup(fd)) == -1) {
455 warnx("dup");
456 goto cleanup;
457 }
458
459 if ((fp = fdopen(my_fd, "rb")) == NULL) {
460 warnx("fdopen");
461 goto cleanup;
462 }
463
464 SHA256_Init(&sha256);
465
466 while ((r = fread(buffer, 1, BUFSIZ, fp)) > 0)
467 SHA256_Update(&sha256, buffer, r);
468
469 if (ferror(fp) != 0) {
470 warnx("fread");
471 goto cleanup;
472 }
473
474 SHA256_Final(hash, &sha256);
475 sha256_hash(hash, out);
476 ret = 0;
477
478cleanup:
479 if (fp != NULL)
480 fclose(fp);
481 else if (my_fd != -1)
482 close(my_fd);
483 (void)lseek(fd, 0, SEEK_SET);
484
485 return (ret);
486}
487
488static EVP_PKEY *
489load_public_key_buf(const unsigned char *cert, int certlen)
490{
491 EVP_PKEY *pkey;
492 BIO *bp;
493 char errbuf[1024];
494
495 bp = BIO_new_mem_buf(__DECONST(void *, cert), certlen);
496
497 if ((pkey = PEM_read_bio_PUBKEY(bp, NULL, NULL, NULL)) == NULL)
498 warnx("%s", ERR_error_string(ERR_get_error(), errbuf));
499
500 BIO_free(bp);
501
502 return (pkey);
503}
504
505static bool
506rsa_verify_cert(int fd, const unsigned char *key, int keylen,
507 unsigned char *sig, int siglen)
508{
509 EVP_MD_CTX *mdctx;
510 EVP_PKEY *pkey;
511 char sha256[(SHA256_DIGEST_LENGTH * 2) + 2];
512 char errbuf[1024];
513 bool ret;
514
515 pkey = NULL;
516 mdctx = NULL;
517 ret = false;
518
519 /* Compute SHA256 of the package. */
520 if (lseek(fd, 0, 0) == -1) {
521 warn("lseek");
522 goto cleanup;
523 }
524 if ((sha256_fd(fd, sha256)) == -1) {
525 warnx("Error creating SHA256 hash for package");
526 goto cleanup;
527 }
528
529 if ((pkey = load_public_key_buf(key, keylen)) == NULL) {
530 warnx("Error reading public key");
531 goto cleanup;
532 }
533
534 /* Verify signature of the SHA256(pkg) is valid. */
535 if ((mdctx = EVP_MD_CTX_create()) == NULL) {
536 warnx("%s", ERR_error_string(ERR_get_error(), errbuf));
537 goto error;
538 }
539
540 if (EVP_DigestVerifyInit(mdctx, NULL, EVP_sha256(), NULL, pkey) != 1) {
541 warnx("%s", ERR_error_string(ERR_get_error(), errbuf));
542 goto error;
543 }
544 if (EVP_DigestVerifyUpdate(mdctx, sha256, strlen(sha256)) != 1) {
545 warnx("%s", ERR_error_string(ERR_get_error(), errbuf));
546 goto error;
547 }
548
549 if (EVP_DigestVerifyFinal(mdctx, sig, siglen) != 1) {
550 warnx("%s", ERR_error_string(ERR_get_error(), errbuf));
551 goto error;
552 }
553
554 ret = true;
555 printf("done\n");
556 goto cleanup;
557
558error:
559 printf("failed\n");
560
561cleanup:
562 if (pkey)
563 EVP_PKEY_free(pkey);
564 if (mdctx)
565 EVP_MD_CTX_destroy(mdctx);
566 ERR_free_strings();
567
568 return (ret);
569}
570
571static struct sig_cert *
572parse_cert(int fd) {
573 int my_fd;
574 struct sig_cert *sc;
575 FILE *fp;
576 struct sbuf *buf, *sig, *cert;
577 char *line;
578 size_t linecap;
579 ssize_t linelen;
580
581 buf = NULL;
582 my_fd = -1;
583 sc = NULL;
584 line = NULL;
585 linecap = 0;
586
587 if (lseek(fd, 0, 0) == -1) {
588 warn("lseek");
589 return (NULL);
590 }
591
592 /* Duplicate the fd so that fclose(3) does not close it. */
593 if ((my_fd = dup(fd)) == -1) {
594 warnx("dup");
595 return (NULL);
596 }
597
598 if ((fp = fdopen(my_fd, "rb")) == NULL) {
599 warn("fdopen");
600 close(my_fd);
601 return (NULL);
602 }
603
604 sig = sbuf_new_auto();
605 cert = sbuf_new_auto();
606
607 while ((linelen = getline(&line, &linecap, fp)) > 0) {
608 if (strcmp(line, "SIGNATURE\n") == 0) {
609 buf = sig;
610 continue;
611 } else if (strcmp(line, "CERT\n") == 0) {
612 buf = cert;
613 continue;
614 } else if (strcmp(line, "END\n") == 0) {
615 break;
616 }
617 if (buf != NULL)
618 sbuf_bcat(buf, line, linelen);
619 }
620
621 fclose(fp);
622
623 /* Trim out unrelated trailing newline */
624 sbuf_setpos(sig, sbuf_len(sig) - 1);
625
626 sbuf_finish(sig);
627 sbuf_finish(cert);
628
629 sc = calloc(1, sizeof(struct sig_cert));
630 sc->siglen = sbuf_len(sig);
631 sc->sig = calloc(1, sc->siglen);
632 memcpy(sc->sig, sbuf_data(sig), sc->siglen);
633
634 sc->certlen = sbuf_len(cert);
635 sc->cert = strdup(sbuf_data(cert));
636
637 sbuf_delete(sig);
638 sbuf_delete(cert);
639
640 return (sc);
641}
642
643static bool
644verify_signature(int fd_pkg, int fd_sig)
645{
646 struct fingerprint_list *trusted, *revoked;
647 struct fingerprint *fingerprint;
648 struct sig_cert *sc;
649 bool ret;
650 int trusted_count, revoked_count;
651 const char *fingerprints;
652 char path[MAXPATHLEN];
653 char hash[SHA256_DIGEST_LENGTH * 2 + 1];
654
655 sc = NULL;
656 trusted = revoked = NULL;
657 ret = false;
658
659 /* Read and parse fingerprints. */
660 if (config_string(FINGERPRINTS, &fingerprints) != 0) {
661 warnx("No CONFIG_FINGERPRINTS defined");
662 goto cleanup;
663 }
664
665 snprintf(path, MAXPATHLEN, "%s/trusted", fingerprints);
666 if ((trusted = load_fingerprints(path, &trusted_count)) == NULL) {
667 warnx("Error loading trusted certificates");
668 goto cleanup;
669 }
670
671 if (trusted_count == 0 || trusted == NULL) {
672 fprintf(stderr, "No trusted certificates found.\n");
673 goto cleanup;
674 }
675
676 snprintf(path, MAXPATHLEN, "%s/revoked", fingerprints);
677 if ((revoked = load_fingerprints(path, &revoked_count)) == NULL) {
678 warnx("Error loading revoked certificates");
679 goto cleanup;
680 }
681
682 /* Read certificate and signature in. */
683 if ((sc = parse_cert(fd_sig)) == NULL) {
684 warnx("Error parsing certificate");
685 goto cleanup;
686 }
687 /* Explicitly mark as non-trusted until proven otherwise. */
688 sc->trusted = false;
689
690 /* Parse signature and pubkey out of the certificate */
691 sha256_buf(sc->cert, sc->certlen, hash);
692
693 /* Check if this hash is revoked */
694 if (revoked != NULL) {
695 STAILQ_FOREACH(fingerprint, revoked, next) {
696 if (strcasecmp(fingerprint->hash, hash) == 0) {
697 fprintf(stderr, "The package was signed with "
698 "revoked certificate %s\n",
699 fingerprint->name);
700 goto cleanup;
701 }
702 }
703 }
704
705 STAILQ_FOREACH(fingerprint, trusted, next) {
706 if (strcasecmp(fingerprint->hash, hash) == 0) {
707 sc->trusted = true;
708 sc->name = strdup(fingerprint->name);
709 break;
710 }
711 }
712
713 if (sc->trusted == false) {
714 fprintf(stderr, "No trusted fingerprint found matching "
715 "package's certificate\n");
716 goto cleanup;
717 }
718
719 /* Verify the signature. */
720 printf("Verifying signature with trusted certificate %s... ", sc->name);
721 if (rsa_verify_cert(fd_pkg, sc->cert, sc->certlen, sc->sig,
722 sc->siglen) == false) {
723 fprintf(stderr, "Signature is not valid\n");
724 goto cleanup;
725 }
726
727 ret = true;
728
729cleanup:
730 if (trusted)
731 free_fingerprint_list(trusted);
732 if (revoked)
733 free_fingerprint_list(revoked);
734 if (sc) {
735 if (sc->cert)
736 free(sc->cert);
737 if (sc->sig)
738 free(sc->sig);
739 if (sc->name)
740 free(sc->name);
741 free(sc);
742 }
743
744 return (ret);
745}
746
747static int
748bootstrap_pkg(bool force)
749{
750 FILE *config;
751 int fd_pkg, fd_sig;
752 int ret;
753 char *site;
754 char url[MAXPATHLEN];
755 char conf[MAXPATHLEN];
756 char tmppkg[MAXPATHLEN];
757 char tmpsig[MAXPATHLEN];
758 const char *packagesite;
759 const char *signature_type;
760 char pkgstatic[MAXPATHLEN];
761
762 fd_sig = -1;
763 ret = -1;
764 config = NULL;
765
766 if (config_string(PACKAGESITE, &packagesite) != 0) {
767 warnx("No PACKAGESITE defined");
768 return (-1);
769 }
770
771 if (config_string(SIGNATURE_TYPE, &signature_type) != 0) {
772 warnx("Error looking up SIGNATURE_TYPE");
773 return (-1);
774 }
775
776 printf("Bootstrapping pkg from %s, please wait...\n", packagesite);
777
778 /* Support pkg+http:// for PACKAGESITE which is the new format
779 in 1.2 to avoid confusion on why http://pkg.FreeBSD.org has
780 no A record. */
781 if (strncmp(URL_SCHEME_PREFIX, packagesite,
782 strlen(URL_SCHEME_PREFIX)) == 0)
783 packagesite += strlen(URL_SCHEME_PREFIX);
784 snprintf(url, MAXPATHLEN, "%s/Latest/pkg.txz", packagesite);
785
786 snprintf(tmppkg, MAXPATHLEN, "%s/pkg.txz.XXXXXX",
787 getenv("TMPDIR") ? getenv("TMPDIR") : _PATH_TMP);
788
789 if ((fd_pkg = fetch_to_fd(url, tmppkg)) == -1)
790 goto fetchfail;
791
792 if (signature_type != NULL &&
793 strcasecmp(signature_type, "FINGERPRINTS") == 0) {
794 snprintf(tmpsig, MAXPATHLEN, "%s/pkg.txz.sig.XXXXXX",
795 getenv("TMPDIR") ? getenv("TMPDIR") : _PATH_TMP);
796 snprintf(url, MAXPATHLEN, "%s/Latest/pkg.txz.sig",
797 packagesite);
798
799 if ((fd_sig = fetch_to_fd(url, tmpsig)) == -1) {
800 fprintf(stderr, "Signature for pkg not available.\n");
801 goto fetchfail;
802 }
803
804 if (verify_signature(fd_pkg, fd_sig) == false)
805 goto cleanup;
806 }
807
808 if ((ret = extract_pkg_static(fd_pkg, pkgstatic, MAXPATHLEN)) == 0)
809 ret = install_pkg_static(pkgstatic, tmppkg, force);
810
811 snprintf(conf, MAXPATHLEN, "%s/etc/pkg.conf",
812 getenv("LOCALBASE") ? getenv("LOCALBASE") : _LOCALBASE);
813
814 if (access(conf, R_OK) == -1) {
815 site = strrchr(url, '/');
816 if (site == NULL)
817 goto cleanup;
818 site[0] = '\0';
819 site = strrchr(url, '/');
820 if (site == NULL)
821 goto cleanup;
822 site[0] = '\0';
823
824 config = fopen(conf, "w+");
825 if (config == NULL)
826 goto cleanup;
827 fprintf(config, "packagesite: %s\n", url);
828 fclose(config);
829 }
830
831 goto cleanup;
832
833fetchfail:
834 warnx("Error fetching %s: %s", url, fetchLastErrString);
835 fprintf(stderr, "A pre-built version of pkg could not be found for "
836 "your system.\n");
837 fprintf(stderr, "Consider changing PACKAGESITE or installing it from "
838 "ports: 'ports-mgmt/pkg'.\n");
839
840cleanup:
841 if (fd_sig != -1) {
842 close(fd_sig);
843 unlink(tmpsig);
844 }
845 close(fd_pkg);
846 unlink(tmppkg);
847
848 return (ret);
849}
850
851static const char confirmation_message[] =
852"The package management tool is not yet installed on your system.\n"
853"Do you want to fetch and install it now? [y/N]: ";
854
855static int
856pkg_query_yes_no(void)
857{
858 int ret, c;
859
860 c = getchar();
861
862 if (c == 'y' || c == 'Y')
863 ret = 1;
864 else
865 ret = 0;
866
867 while (c != '\n' && c != EOF)
868 c = getchar();
869
870 return (ret);
871}
872
873static int
874bootstrap_pkg_local(const char *pkgpath, bool force)
875{
876 char path[MAXPATHLEN];
877 char pkgstatic[MAXPATHLEN];
878 const char *signature_type;
879 int fd_pkg, fd_sig, ret;
880
881 fd_sig = -1;
882 ret = -1;
883
884 fd_pkg = open(pkgpath, O_RDONLY);
885 if (fd_pkg == -1)
886 err(EXIT_FAILURE, "Unable to open %s", pkgpath);
887
888 if (config_string(SIGNATURE_TYPE, &signature_type) != 0) {
889 warnx("Error looking up SIGNATURE_TYPE");
890 return (-1);
891 }
892 if (signature_type != NULL &&
893 strcasecmp(signature_type, "FINGERPRINTS") == 0) {
894 snprintf(path, sizeof(path), "%s.sig", pkgpath);
895
896 if ((fd_sig = open(path, O_RDONLY)) == -1) {
897 fprintf(stderr, "Signature for pkg not available.\n");
898 goto cleanup;
899 }
900
901 if (verify_signature(fd_pkg, fd_sig) == false)
902 goto cleanup;
903 }
904
905 if ((ret = extract_pkg_static(fd_pkg, pkgstatic, MAXPATHLEN)) == 0)
906 ret = install_pkg_static(pkgstatic, pkgpath, force);
907
908cleanup:
909 close(fd_pkg);
910 if (fd_sig != -1)
911 close(fd_sig);
912
913 return (ret);
914}
915
916int
917main(__unused int argc, char *argv[])
918{
919 char pkgpath[MAXPATHLEN];
920 const char *pkgarg;
921 bool bootstrap_only, force, yes;
922
923 bootstrap_only = false;
924 force = false;
925 pkgarg = NULL;
926 yes = false;
927
928 snprintf(pkgpath, MAXPATHLEN, "%s/sbin/pkg",
929 getenv("LOCALBASE") ? getenv("LOCALBASE") : _LOCALBASE);
930
931 if (argc > 1 && strcmp(argv[1], "bootstrap") == 0) {
932 bootstrap_only = true;
933 if (argc == 3 && strcmp(argv[2], "-f") == 0)
934 force = true;
935 }
936
937 if ((bootstrap_only && force) || access(pkgpath, X_OK) == -1) {
938 /*
939 * To allow 'pkg -N' to be used as a reliable test for whether
940 * a system is configured to use pkg, don't bootstrap pkg
941 * when that argument is given as argv[1].
942 */
943 if (argv[1] != NULL && strcmp(argv[1], "-N") == 0)
944 errx(EXIT_FAILURE, "pkg is not installed");
945
946 config_init();
947
948 if (argc > 1 && strcmp(argv[1], "add") == 0) {
949 if (argc > 2 && strcmp(argv[2], "-f") == 0) {
950 force = true;
951 pkgarg = argv[3];
952 } else
953 pkgarg = argv[2];
954 if (pkgarg == NULL) {
955 fprintf(stderr, "Path to pkg.txz required\n");
956 exit(EXIT_FAILURE);
957 }
958 if (access(pkgarg, R_OK) == -1) {
959 fprintf(stderr, "No such file: %s\n", pkgarg);
960 exit(EXIT_FAILURE);
961 }
962 if (bootstrap_pkg_local(pkgarg, force) != 0)
963 exit(EXIT_FAILURE);
964 exit(EXIT_SUCCESS);
965 }
966 /*
967 * Do not ask for confirmation if either of stdin or stdout is
968 * not tty. Check the environment to see if user has answer
969 * tucked in there already.
970 */
971 config_bool(ASSUME_ALWAYS_YES, &yes);
972 if (!yes) {
973 printf("%s", confirmation_message);
974 if (!isatty(fileno(stdin)))
975 exit(EXIT_FAILURE);
976
977 if (pkg_query_yes_no() == 0)
978 exit(EXIT_FAILURE);
979 }
980 if (bootstrap_pkg(force) != 0)
981 exit(EXIT_FAILURE);
982 config_finish();
983
984 if (bootstrap_only)
985 exit(EXIT_SUCCESS);
986 } else if (bootstrap_only) {
987 printf("pkg already bootstrapped at %s\n", pkgpath);
988 exit(EXIT_SUCCESS);
989 }
990
991 execv(pkgpath, argv);
992
993 /* NOT REACHED */
994 return (EXIT_FAILURE);
995}
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