Tomato 1.28
[tomato.git] / release / src / router / openssl / apps / passwd.c
blobea2b089e24a73762fd027f997f5a34b5ef9e9487
1 /* apps/passwd.c */
3 #if defined NO_MD5 || defined CHARSET_EBCDIC
4 # define NO_MD5CRYPT_1
5 #endif
7 #if !defined(NO_DES) || !defined(NO_MD5CRYPT_1)
9 #include <assert.h>
10 #include <string.h>
12 #include "apps.h"
14 #include <openssl/bio.h>
15 #include <openssl/err.h>
16 #include <openssl/evp.h>
17 #include <openssl/rand.h>
19 #ifndef NO_DES
20 # include <openssl/des.h>
21 #endif
22 #ifndef NO_MD5CRYPT_1
23 # include <openssl/md5.h>
24 #endif
27 #undef PROG
28 #define PROG passwd_main
31 static unsigned const char cov_2char[64]={
32 /* from crypto/des/fcrypt.c */
33 0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35,
34 0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44,
35 0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,
36 0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54,
37 0x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62,
38 0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,
39 0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,
40 0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A
43 static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p,
44 char *passwd, BIO *out, int quiet, int table, int reverse,
45 size_t pw_maxlen, int usecrypt, int use1, int useapr1);
47 /* -crypt - standard Unix password algorithm (default)
48 * -1 - MD5-based password algorithm
49 * -apr1 - MD5-based password algorithm, Apache variant
50 * -salt string - salt
51 * -in file - read passwords from file
52 * -stdin - read passwords from stdin
53 * -quiet - no warnings
54 * -table - format output as table
55 * -reverse - switch table columns
58 int MAIN(int, char **);
60 int MAIN(int argc, char **argv)
62 int ret = 1;
63 char *infile = NULL;
64 int in_stdin = 0;
65 char *salt = NULL, *passwd = NULL, **passwds = NULL;
66 char *salt_malloc = NULL, *passwd_malloc = NULL;
67 size_t passwd_malloc_size = 0;
68 int pw_source_defined = 0;
69 BIO *in = NULL, *out = NULL;
70 int i, badopt, opt_done;
71 int passed_salt = 0, quiet = 0, table = 0, reverse = 0;
72 int usecrypt = 0, use1 = 0, useapr1 = 0;
73 size_t pw_maxlen = 0;
75 apps_startup();
77 if (bio_err == NULL)
78 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
79 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
80 out = BIO_new(BIO_s_file());
81 if (out == NULL)
82 goto err;
83 BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
84 #ifdef VMS
86 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
87 out = BIO_push(tmpbio, out);
89 #endif
91 badopt = 0, opt_done = 0;
92 i = 0;
93 while (!badopt && !opt_done && argv[++i] != NULL)
95 if (strcmp(argv[i], "-crypt") == 0)
96 usecrypt = 1;
97 else if (strcmp(argv[i], "-1") == 0)
98 use1 = 1;
99 else if (strcmp(argv[i], "-apr1") == 0)
100 useapr1 = 1;
101 else if (strcmp(argv[i], "-salt") == 0)
103 if ((argv[i+1] != NULL) && (salt == NULL))
105 passed_salt = 1;
106 salt = argv[++i];
108 else
109 badopt = 1;
111 else if (strcmp(argv[i], "-in") == 0)
113 if ((argv[i+1] != NULL) && !pw_source_defined)
115 pw_source_defined = 1;
116 infile = argv[++i];
118 else
119 badopt = 1;
121 else if (strcmp(argv[i], "-stdin") == 0)
123 if (!pw_source_defined)
125 pw_source_defined = 1;
126 in_stdin = 1;
128 else
129 badopt = 1;
131 else if (strcmp(argv[i], "-quiet") == 0)
132 quiet = 1;
133 else if (strcmp(argv[i], "-table") == 0)
134 table = 1;
135 else if (strcmp(argv[i], "-reverse") == 0)
136 reverse = 1;
137 else if (argv[i][0] == '-')
138 badopt = 1;
139 else if (!pw_source_defined)
140 /* non-option arguments, use as passwords */
142 pw_source_defined = 1;
143 passwds = &argv[i];
144 opt_done = 1;
146 else
147 badopt = 1;
150 if (!usecrypt && !use1 && !useapr1) /* use default */
151 usecrypt = 1;
152 if (usecrypt + use1 + useapr1 > 1) /* conflict */
153 badopt = 1;
155 /* reject unsupported algorithms */
156 #ifdef NO_DES
157 if (usecrypt) badopt = 1;
158 #endif
159 #ifdef NO_MD5CRYPT_1
160 if (use1 || useapr1) badopt = 1;
161 #endif
163 if (badopt)
165 BIO_printf(bio_err, "Usage: passwd [options] [passwords]\n");
166 BIO_printf(bio_err, "where options are\n");
167 #ifndef NO_DES
168 BIO_printf(bio_err, "-crypt standard Unix password algorithm (default)\n");
169 #endif
170 #ifndef NO_MD5CRYPT_1
171 BIO_printf(bio_err, "-1 MD5-based password algorithm\n");
172 BIO_printf(bio_err, "-apr1 MD5-based password algorithm, Apache variant\n");
173 #endif
174 BIO_printf(bio_err, "-salt string use provided salt\n");
175 BIO_printf(bio_err, "-in file read passwords from file\n");
176 BIO_printf(bio_err, "-stdin read passwords from stdin\n");
177 BIO_printf(bio_err, "-quiet no warnings\n");
178 BIO_printf(bio_err, "-table format output as table\n");
179 BIO_printf(bio_err, "-reverse switch table columns\n");
181 goto err;
184 if ((infile != NULL) || in_stdin)
186 in = BIO_new(BIO_s_file());
187 if (in == NULL)
188 goto err;
189 if (infile != NULL)
191 assert(in_stdin == 0);
192 if (BIO_read_filename(in, infile) <= 0)
193 goto err;
195 else
197 assert(in_stdin);
198 BIO_set_fp(in, stdin, BIO_NOCLOSE);
202 if (usecrypt)
203 pw_maxlen = 8;
204 else if (use1 || useapr1)
205 pw_maxlen = 256; /* arbitrary limit, should be enough for most passwords */
207 if (passwds == NULL)
209 /* no passwords on the command line */
211 passwd_malloc_size = pw_maxlen + 2;
212 /* longer than necessary so that we can warn about truncation */
213 passwd = passwd_malloc = OPENSSL_malloc(passwd_malloc_size);
214 if (passwd_malloc == NULL)
215 goto err;
218 if ((in == NULL) && (passwds == NULL))
220 /* build a null-terminated list */
221 static char *passwds_static[2] = {NULL, NULL};
223 passwds = passwds_static;
224 if (in == NULL)
225 if (EVP_read_pw_string(passwd_malloc, passwd_malloc_size, "Password: ", 0) != 0)
226 goto err;
227 passwds[0] = passwd_malloc;
230 if (in == NULL)
232 assert(passwds != NULL);
233 assert(*passwds != NULL);
235 do /* loop over list of passwords */
237 passwd = *passwds++;
238 if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, out,
239 quiet, table, reverse, pw_maxlen, usecrypt, use1, useapr1))
240 goto err;
242 while (*passwds != NULL);
244 else
245 /* in != NULL */
247 int done;
249 assert (passwd != NULL);
252 int r = BIO_gets(in, passwd, pw_maxlen + 1);
253 if (r > 0)
255 char *c = (strchr(passwd, '\n')) ;
256 if (c != NULL)
257 *c = 0; /* truncate at newline */
258 else
260 /* ignore rest of line */
261 char trash[BUFSIZ];
263 r = BIO_gets(in, trash, sizeof trash);
264 while ((r > 0) && (!strchr(trash, '\n')));
267 if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, out,
268 quiet, table, reverse, pw_maxlen, usecrypt, use1, useapr1))
269 goto err;
271 done = (r <= 0);
273 while (!done);
275 ret = 0;
277 err:
278 ERR_print_errors(bio_err);
279 if (salt_malloc)
280 OPENSSL_free(salt_malloc);
281 if (passwd_malloc)
282 OPENSSL_free(passwd_malloc);
283 if (in)
284 BIO_free(in);
285 if (out)
286 BIO_free_all(out);
287 EXIT(ret);
291 #ifndef NO_MD5CRYPT_1
292 /* MD5-based password algorithm (should probably be available as a library
293 * function; then the static buffer would not be acceptable).
294 * For magic string "1", this should be compatible to the MD5-based BSD
295 * password algorithm.
296 * For 'magic' string "apr1", this is compatible to the MD5-based Apache
297 * password algorithm.
298 * (Apparently, the Apache password algorithm is identical except that the
299 * 'magic' string was changed -- the laziest application of the NIH principle
300 * I've ever encountered.)
302 static char *md5crypt(const char *passwd, const char *magic, const char *salt)
304 static char out_buf[6 + 9 + 24 + 2]; /* "$apr1$..salt..$.......md5hash..........\0" */
305 unsigned char buf[MD5_DIGEST_LENGTH];
306 char *salt_out;
307 int n, i;
308 MD5_CTX md;
309 size_t passwd_len, salt_len;
311 passwd_len = strlen(passwd);
312 out_buf[0] = '$';
313 out_buf[1] = 0;
314 assert(strlen(magic) <= 4); /* "1" or "apr1" */
315 strncat(out_buf, magic, 4);
316 strncat(out_buf, "$", 1);
317 strncat(out_buf, salt, 8);
318 assert(strlen(out_buf) <= 6 + 8); /* "$apr1$..salt.." */
319 salt_out = out_buf + 2 + strlen(magic);
320 salt_len = strlen(salt_out);
321 assert(salt_len <= 8);
323 MD5_Init(&md);
324 MD5_Update(&md, passwd, passwd_len);
325 MD5_Update(&md, "$", 1);
326 MD5_Update(&md, magic, strlen(magic));
327 MD5_Update(&md, "$", 1);
328 MD5_Update(&md, salt_out, salt_len);
331 MD5_CTX md2;
333 MD5_Init(&md2);
334 MD5_Update(&md2, passwd, passwd_len);
335 MD5_Update(&md2, salt_out, salt_len);
336 MD5_Update(&md2, passwd, passwd_len);
337 MD5_Final(buf, &md2);
339 for (i = passwd_len; i > sizeof buf; i -= sizeof buf)
340 MD5_Update(&md, buf, sizeof buf);
341 MD5_Update(&md, buf, i);
343 n = passwd_len;
344 while (n)
346 MD5_Update(&md, (n & 1) ? "\0" : passwd, 1);
347 n >>= 1;
349 MD5_Final(buf, &md);
351 for (i = 0; i < 1000; i++)
353 MD5_CTX md2;
355 MD5_Init(&md2);
356 MD5_Update(&md2, (i & 1) ? (unsigned char *) passwd : buf,
357 (i & 1) ? passwd_len : sizeof buf);
358 if (i % 3)
359 MD5_Update(&md2, salt_out, salt_len);
360 if (i % 7)
361 MD5_Update(&md2, passwd, passwd_len);
362 MD5_Update(&md2, (i & 1) ? buf : (unsigned char *) passwd,
363 (i & 1) ? sizeof buf : passwd_len);
364 MD5_Final(buf, &md2);
368 /* transform buf into output string */
370 unsigned char buf_perm[sizeof buf];
371 int dest, source;
372 char *output;
374 /* silly output permutation */
375 for (dest = 0, source = 0; dest < 14; dest++, source = (source + 6) % 17)
376 buf_perm[dest] = buf[source];
377 buf_perm[14] = buf[5];
378 buf_perm[15] = buf[11];
379 #ifndef PEDANTIC /* Unfortunately, this generates a "no effect" warning */
380 assert(16 == sizeof buf_perm);
381 #endif
383 output = salt_out + salt_len;
384 assert(output == out_buf + strlen(out_buf));
386 *output++ = '$';
388 for (i = 0; i < 15; i += 3)
390 *output++ = cov_2char[buf_perm[i+2] & 0x3f];
391 *output++ = cov_2char[((buf_perm[i+1] & 0xf) << 2) |
392 (buf_perm[i+2] >> 6)];
393 *output++ = cov_2char[((buf_perm[i] & 3) << 4) |
394 (buf_perm[i+1] >> 4)];
395 *output++ = cov_2char[buf_perm[i] >> 2];
397 assert(i == 15);
398 *output++ = cov_2char[buf_perm[i] & 0x3f];
399 *output++ = cov_2char[buf_perm[i] >> 6];
400 *output = 0;
401 assert(strlen(out_buf) < sizeof(out_buf));
404 return out_buf;
406 #endif
409 static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p,
410 char *passwd, BIO *out, int quiet, int table, int reverse,
411 size_t pw_maxlen, int usecrypt, int use1, int useapr1)
413 char *hash = NULL;
415 assert(salt_p != NULL);
416 assert(salt_malloc_p != NULL);
418 /* first make sure we have a salt */
419 if (!passed_salt)
421 #ifndef NO_DES
422 if (usecrypt)
424 if (*salt_malloc_p == NULL)
426 *salt_p = *salt_malloc_p = OPENSSL_malloc(3);
427 if (*salt_malloc_p == NULL)
428 goto err;
430 if (RAND_pseudo_bytes((unsigned char *)*salt_p, 2) < 0)
431 goto err;
432 (*salt_p)[0] = cov_2char[(*salt_p)[0] & 0x3f]; /* 6 bits */
433 (*salt_p)[1] = cov_2char[(*salt_p)[1] & 0x3f]; /* 6 bits */
434 (*salt_p)[2] = 0;
435 #ifdef CHARSET_EBCDIC
436 ascii2ebcdic(*salt_p, *salt_p, 2); /* des_crypt will convert
437 * back to ASCII */
438 #endif
440 #endif /* !NO_DES */
442 #ifndef NO_MD5CRYPT_1
443 if (use1 || useapr1)
445 int i;
447 if (*salt_malloc_p == NULL)
449 *salt_p = *salt_malloc_p = OPENSSL_malloc(9);
450 if (*salt_malloc_p == NULL)
451 goto err;
453 if (RAND_pseudo_bytes((unsigned char *)*salt_p, 8) < 0)
454 goto err;
456 for (i = 0; i < 8; i++)
457 (*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */
458 (*salt_p)[8] = 0;
460 #endif /* !NO_MD5CRYPT_1 */
463 assert(*salt_p != NULL);
465 /* truncate password if necessary */
466 if ((strlen(passwd) > pw_maxlen))
468 if (!quiet)
469 BIO_printf(bio_err, "Warning: truncating password to %u characters\n", pw_maxlen);
470 passwd[pw_maxlen] = 0;
472 assert(strlen(passwd) <= pw_maxlen);
474 /* now compute password hash */
475 #ifndef NO_DES
476 if (usecrypt)
477 hash = des_crypt(passwd, *salt_p);
478 #endif
479 #ifndef NO_MD5CRYPT_1
480 if (use1 || useapr1)
481 hash = md5crypt(passwd, (use1 ? "1" : "apr1"), *salt_p);
482 #endif
483 assert(hash != NULL);
485 if (table && !reverse)
486 BIO_printf(out, "%s\t%s\n", passwd, hash);
487 else if (table && reverse)
488 BIO_printf(out, "%s\t%s\n", hash, passwd);
489 else
490 BIO_printf(out, "%s\n", hash);
491 return 1;
493 err:
494 return 0;
496 #else
498 int MAIN(int argc, char **argv)
500 fputs("Program not available.\n", stderr)
501 EXIT(1);
503 #endif