source: EcnlProtoTool/trunk/openssl-1.1.0e/apps/rehash.c@ 331

Last change on this file since 331 was 331, checked in by coas-nagasima, 6 years ago

prototoolに関連するプロジェクトをnewlibからmuslを使うよう変更・更新
ntshellをnewlibの下位の実装から、muslのsyscallの実装に変更・更新
以下のOSSをアップデート
・mruby-1.3.0
・musl-1.1.18
・onigmo-6.1.3
・tcc-0.9.27
以下のOSSを追加
・openssl-1.1.0e
・curl-7.57.0
・zlib-1.2.11
以下のmrbgemsを追加
・iij/mruby-digest
・iij/mruby-env
・iij/mruby-errno
・iij/mruby-iijson
・iij/mruby-ipaddr
・iij/mruby-mock
・iij/mruby-require
・iij/mruby-tls-openssl
  • Property svn:eol-style set to native
  • Property svn:mime-type set to text/x-csrc
File size: 13.8 KB
RevLine 
[331]1/*
2 * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10/*
11 * C implementation based on the original Perl and shell versions
12 *
13 * Copyright (c) 2013-2014 Timo Ter辰s <timo.teras@iki.fi>
14 */
15
16#include "apps.h"
17
18#if defined(OPENSSL_SYS_UNIX) || defined(__APPLE__) || \
19 (defined(__VMS) && defined(__DECC) && __CTRL_VER >= 80300000)
20# include <unistd.h>
21# include <stdio.h>
22# include <limits.h>
23# include <errno.h>
24# include <string.h>
25# include <ctype.h>
26# include <sys/stat.h>
27
28# include "internal/o_dir.h"
29# include <openssl/evp.h>
30# include <openssl/pem.h>
31# include <openssl/x509.h>
32
33
34# ifndef PATH_MAX
35# define PATH_MAX 4096
36# endif
37# ifndef NAME_MAX
38# define NAME_MAX 255
39# endif
40# define MAX_COLLISIONS 256
41
42typedef struct hentry_st {
43 struct hentry_st *next;
44 char *filename;
45 unsigned short old_id;
46 unsigned char need_symlink;
47 unsigned char digest[EVP_MAX_MD_SIZE];
48} HENTRY;
49
50typedef struct bucket_st {
51 struct bucket_st *next;
52 HENTRY *first_entry, *last_entry;
53 unsigned int hash;
54 unsigned short type;
55 unsigned short num_needed;
56} BUCKET;
57
58enum Type {
59 /* Keep in sync with |suffixes|, below. */
60 TYPE_CERT=0, TYPE_CRL=1
61};
62
63enum Hash {
64 HASH_OLD, HASH_NEW, HASH_BOTH
65};
66
67
68static int evpmdsize;
69static const EVP_MD *evpmd;
70static int remove_links = 1;
71static int verbose = 0;
72static BUCKET *hash_table[257];
73
74static const char *suffixes[] = { "", "r" };
75static const char *extensions[] = { "pem", "crt", "cer", "crl" };
76
77
78static void bit_set(unsigned char *set, unsigned int bit)
79{
80 set[bit >> 3] |= 1 << (bit & 0x7);
81}
82
83static int bit_isset(unsigned char *set, unsigned int bit)
84{
85 return set[bit >> 3] & (1 << (bit & 0x7));
86}
87
88
89/*
90 * Process an entry; return number of errors.
91 */
92static int add_entry(enum Type type, unsigned int hash, const char *filename,
93 const unsigned char *digest, int need_symlink,
94 unsigned short old_id)
95{
96 static BUCKET nilbucket;
97 static HENTRY nilhentry;
98 BUCKET *bp;
99 HENTRY *ep, *found = NULL;
100 unsigned int ndx = (type + hash) % OSSL_NELEM(hash_table);
101
102 for (bp = hash_table[ndx]; bp; bp = bp->next)
103 if (bp->type == type && bp->hash == hash)
104 break;
105 if (bp == NULL) {
106 bp = app_malloc(sizeof(*bp), "hash bucket");
107 *bp = nilbucket;
108 bp->next = hash_table[ndx];
109 bp->type = type;
110 bp->hash = hash;
111 hash_table[ndx] = bp;
112 }
113
114 for (ep = bp->first_entry; ep; ep = ep->next) {
115 if (digest && memcmp(digest, ep->digest, evpmdsize) == 0) {
116 BIO_printf(bio_err,
117 "%s: skipping duplicate %s in %s\n", opt_getprog(),
118 type == TYPE_CERT ? "certificate" : "CRL", filename);
119 return 1;
120 }
121 if (strcmp(filename, ep->filename) == 0) {
122 found = ep;
123 if (digest == NULL)
124 break;
125 }
126 }
127 ep = found;
128 if (ep == NULL) {
129 if (bp->num_needed >= MAX_COLLISIONS) {
130 BIO_printf(bio_err,
131 "%s: hash table overflow for %s\n",
132 opt_getprog(), filename);
133 return 1;
134 }
135 ep = app_malloc(sizeof(*ep), "collision bucket");
136 *ep = nilhentry;
137 ep->old_id = ~0;
138 ep->filename = OPENSSL_strdup(filename);
139 if (bp->last_entry)
140 bp->last_entry->next = ep;
141 if (bp->first_entry == NULL)
142 bp->first_entry = ep;
143 bp->last_entry = ep;
144 }
145
146 if (old_id < ep->old_id)
147 ep->old_id = old_id;
148 if (need_symlink && !ep->need_symlink) {
149 ep->need_symlink = 1;
150 bp->num_needed++;
151 memcpy(ep->digest, digest, evpmdsize);
152 }
153 return 0;
154}
155
156/*
157 * Check if a symlink goes to the right spot; return 0 if okay.
158 * This can be -1 if bad filename, or an error count.
159 */
160static int handle_symlink(const char *filename, const char *fullpath)
161{
162 unsigned int hash = 0;
163 int i, type, id;
164 unsigned char ch;
165 char linktarget[PATH_MAX], *endptr;
166 ossl_ssize_t n;
167
168 for (i = 0; i < 8; i++) {
169 ch = filename[i];
170 if (!isxdigit(ch))
171 return -1;
172 hash <<= 4;
173 hash += OPENSSL_hexchar2int(ch);
174 }
175 if (filename[i++] != '.')
176 return -1;
177 for (type = OSSL_NELEM(suffixes) - 1; type > 0; type--) {
178 const char *suffix = suffixes[type];
179 if (strncasecmp(suffix, &filename[i], strlen(suffix)) == 0)
180 break;
181 }
182 i += strlen(suffixes[type]);
183
184 id = strtoul(&filename[i], &endptr, 10);
185 if (*endptr != '\0')
186 return -1;
187
188 n = readlink(fullpath, linktarget, sizeof(linktarget));
189 if (n < 0 || n >= (int)sizeof(linktarget))
190 return -1;
191 linktarget[n] = 0;
192
193 return add_entry(type, hash, linktarget, NULL, 0, id);
194}
195
196/*
197 * process a file, return number of errors.
198 */
199static int do_file(const char *filename, const char *fullpath, enum Hash h)
200{
201 STACK_OF (X509_INFO) *inf = NULL;
202 X509_INFO *x;
203 X509_NAME *name = NULL;
204 BIO *b;
205 const char *ext;
206 unsigned char digest[EVP_MAX_MD_SIZE];
207 int type, errs = 0;
208 size_t i;
209
210 /* Does it end with a recognized extension? */
211 if ((ext = strrchr(filename, '.')) == NULL)
212 goto end;
213 for (i = 0; i < OSSL_NELEM(extensions); i++) {
214 if (strcasecmp(extensions[i], ext + 1) == 0)
215 break;
216 }
217 if (i >= OSSL_NELEM(extensions))
218 goto end;
219
220 /* Does it have X.509 data in it? */
221 if ((b = BIO_new_file(fullpath, "r")) == NULL) {
222 BIO_printf(bio_err, "%s: skipping %s, cannot open file\n",
223 opt_getprog(), filename);
224 errs++;
225 goto end;
226 }
227 inf = PEM_X509_INFO_read_bio(b, NULL, NULL, NULL);
228 BIO_free(b);
229 if (inf == NULL)
230 goto end;
231
232 if (sk_X509_INFO_num(inf) != 1) {
233 BIO_printf(bio_err,
234 "%s: skipping %s,"
235 "it does not contain exactly one certificate or CRL\n",
236 opt_getprog(), filename);
237 /* This is not an error. */
238 goto end;
239 }
240 x = sk_X509_INFO_value(inf, 0);
241 if (x->x509) {
242 type = TYPE_CERT;
243 name = X509_get_subject_name(x->x509);
244 X509_digest(x->x509, evpmd, digest, NULL);
245 } else if (x->crl) {
246 type = TYPE_CRL;
247 name = X509_CRL_get_issuer(x->crl);
248 X509_CRL_digest(x->crl, evpmd, digest, NULL);
249 } else {
250 ++errs;
251 goto end;
252 }
253 if (name) {
254 if ((h == HASH_NEW) || (h == HASH_BOTH))
255 errs += add_entry(type, X509_NAME_hash(name), filename, digest, 1, ~0);
256 if ((h == HASH_OLD) || (h == HASH_BOTH))
257 errs += add_entry(type, X509_NAME_hash_old(name), filename, digest, 1, ~0);
258 }
259
260end:
261 sk_X509_INFO_pop_free(inf, X509_INFO_free);
262 return errs;
263}
264
265static void str_free(char *s)
266{
267 OPENSSL_free(s);
268}
269
270/*
271 * Process a directory; return number of errors found.
272 */
273static int do_dir(const char *dirname, enum Hash h)
274{
275 BUCKET *bp, *nextbp;
276 HENTRY *ep, *nextep;
277 OPENSSL_DIR_CTX *d = NULL;
278 struct stat st;
279 unsigned char idmask[MAX_COLLISIONS / 8];
280 int n, numfiles, nextid, buflen, errs = 0;
281 size_t i;
282 const char *pathsep;
283 const char *filename;
284 char *buf, *copy;
285 STACK_OF(OPENSSL_STRING) *files = NULL;
286
287 if (app_access(dirname, W_OK) < 0) {
288 BIO_printf(bio_err, "Skipping %s, can't write\n", dirname);
289 return 1;
290 }
291 buflen = strlen(dirname);
292 pathsep = (buflen && dirname[buflen - 1] == '/') ? "" : "/";
293 buflen += NAME_MAX + 1 + 1;
294 buf = app_malloc(buflen, "filename buffer");
295
296 if (verbose)
297 BIO_printf(bio_out, "Doing %s\n", dirname);
298
299 if ((files = sk_OPENSSL_STRING_new_null()) == NULL) {
300 BIO_printf(bio_err, "Skipping %s, out of memory\n", dirname);
301 exit(1);
302 }
303 while ((filename = OPENSSL_DIR_read(&d, dirname)) != NULL) {
304 if ((copy = strdup(filename)) == NULL
305 || sk_OPENSSL_STRING_push(files, copy) == 0) {
306 BIO_puts(bio_err, "out of memory\n");
307 exit(1);
308 }
309 }
310 OPENSSL_DIR_end(&d);
311 sk_OPENSSL_STRING_sort(files);
312
313 numfiles = sk_OPENSSL_STRING_num(files);
314 for (n = 0; n < numfiles; ++n) {
315 filename = sk_OPENSSL_STRING_value(files, n);
316 if (snprintf(buf, buflen, "%s%s%s",
317 dirname, pathsep, filename) >= buflen)
318 continue;
319 if (lstat(buf, &st) < 0)
320 continue;
321 if (S_ISLNK(st.st_mode) && handle_symlink(filename, buf) == 0)
322 continue;
323 errs += do_file(filename, buf, h);
324 }
325 sk_OPENSSL_STRING_pop_free(files, str_free);
326
327 for (i = 0; i < OSSL_NELEM(hash_table); i++) {
328 for (bp = hash_table[i]; bp; bp = nextbp) {
329 nextbp = bp->next;
330 nextid = 0;
331 memset(idmask, 0, (bp->num_needed + 7) / 8);
332 for (ep = bp->first_entry; ep; ep = ep->next)
333 if (ep->old_id < bp->num_needed)
334 bit_set(idmask, ep->old_id);
335
336 for (ep = bp->first_entry; ep; ep = nextep) {
337 nextep = ep->next;
338 if (ep->old_id < bp->num_needed) {
339 /* Link exists, and is used as-is */
340 snprintf(buf, buflen, "%08x.%s%d", bp->hash,
341 suffixes[bp->type], ep->old_id);
342 if (verbose)
343 BIO_printf(bio_out, "link %s -> %s\n",
344 ep->filename, buf);
345 } else if (ep->need_symlink) {
346 /* New link needed (it may replace something) */
347 while (bit_isset(idmask, nextid))
348 nextid++;
349
350 snprintf(buf, buflen, "%s%s%n%08x.%s%d",
351 dirname, pathsep, &n, bp->hash,
352 suffixes[bp->type], nextid);
353 if (verbose)
354 BIO_printf(bio_out, "link %s -> %s\n",
355 ep->filename, &buf[n]);
356 if (unlink(buf) < 0 && errno != ENOENT) {
357 BIO_printf(bio_err,
358 "%s: Can't unlink %s, %s\n",
359 opt_getprog(), buf, strerror(errno));
360 errs++;
361 }
362 if (symlink(ep->filename, buf) < 0) {
363 BIO_printf(bio_err,
364 "%s: Can't symlink %s, %s\n",
365 opt_getprog(), ep->filename,
366 strerror(errno));
367 errs++;
368 }
369 bit_set(idmask, nextid);
370 } else if (remove_links) {
371 /* Link to be deleted */
372 snprintf(buf, buflen, "%s%s%n%08x.%s%d",
373 dirname, pathsep, &n, bp->hash,
374 suffixes[bp->type], ep->old_id);
375 if (verbose)
376 BIO_printf(bio_out, "unlink %s\n",
377 &buf[n]);
378 if (unlink(buf) < 0 && errno != ENOENT) {
379 BIO_printf(bio_err,
380 "%s: Can't unlink %s, %s\n",
381 opt_getprog(), buf, strerror(errno));
382 errs++;
383 }
384 }
385 OPENSSL_free(ep->filename);
386 OPENSSL_free(ep);
387 }
388 OPENSSL_free(bp);
389 }
390 hash_table[i] = NULL;
391 }
392
393 OPENSSL_free(buf);
394 return errs;
395}
396
397typedef enum OPTION_choice {
398 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
399 OPT_COMPAT, OPT_OLD, OPT_N, OPT_VERBOSE
400} OPTION_CHOICE;
401
402OPTIONS rehash_options[] = {
403 {OPT_HELP_STR, 1, '-', "Usage: %s [options] [cert-directory...]\n"},
404 {OPT_HELP_STR, 1, '-', "Valid options are:\n"},
405 {"help", OPT_HELP, '-', "Display this summary"},
406 {"h", OPT_HELP, '-', "Display this summary"},
407 {"compat", OPT_COMPAT, '-', "Create both new- and old-style hash links"},
408 {"old", OPT_OLD, '-', "Use old-style hash to generate links"},
409 {"n", OPT_N, '-', "Do not remove existing links"},
410 {"v", OPT_VERBOSE, '-', "Verbose output"},
411 {NULL}
412};
413
414
415int rehash_main(int argc, char **argv)
416{
417 const char *env, *prog;
418 char *e, *m;
419 int errs = 0;
420 OPTION_CHOICE o;
421 enum Hash h = HASH_NEW;
422
423 prog = opt_init(argc, argv, rehash_options);
424 while ((o = opt_next()) != OPT_EOF) {
425 switch (o) {
426 case OPT_EOF:
427 case OPT_ERR:
428 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
429 goto end;
430 case OPT_HELP:
431 opt_help(rehash_options);
432 goto end;
433 case OPT_COMPAT:
434 h = HASH_BOTH;
435 break;
436 case OPT_OLD:
437 h = HASH_OLD;
438 break;
439 case OPT_N:
440 remove_links = 0;
441 break;
442 case OPT_VERBOSE:
443 verbose = 1;
444 break;
445 }
446 }
447 argc = opt_num_rest();
448 argv = opt_rest();
449
450 evpmd = EVP_sha1();
451 evpmdsize = EVP_MD_size(evpmd);
452
453 if (*argv) {
454 while (*argv)
455 errs += do_dir(*argv++, h);
456 } else if ((env = getenv("SSL_CERT_DIR")) != NULL) {
457 m = OPENSSL_strdup(env);
458 for (e = strtok(m, ":"); e != NULL; e = strtok(NULL, ":"))
459 errs += do_dir(e, h);
460 OPENSSL_free(m);
461 } else {
462 errs += do_dir("/etc/ssl/certs", h);
463 }
464
465 end:
466 return errs;
467}
468
469#else
470OPTIONS rehash_options[] = {
471 {NULL}
472};
473
474int rehash_main(int argc, char **argv)
475{
476 BIO_printf(bio_err, "Not available; use c_rehash script\n");
477 return (1);
478}
479
480#endif /* defined(OPENSSL_SYS_UNIX) || defined(__APPLE__) */
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