passwd.c revision 109998
1228753Smm/* apps/passwd.c */ 2228753Smm 3228753Smm#if defined OPENSSL_NO_MD5 || defined CHARSET_EBCDIC 4228753Smm# define NO_MD5CRYPT_1 5228753Smm#endif 6228753Smm 7228753Smm#if !defined(OPENSSL_NO_DES) || !defined(NO_MD5CRYPT_1) 8228753Smm 9228753Smm#include <assert.h> 10228753Smm#include <string.h> 11228753Smm 12228753Smm#include "apps.h" 13228753Smm 14228753Smm#include <openssl/bio.h> 15228753Smm#include <openssl/err.h> 16228753Smm#include <openssl/evp.h> 17228753Smm#include <openssl/rand.h> 18228753Smm#ifndef OPENSSL_NO_DES 19228753Smm# include <openssl/des.h> 20228753Smm#endif 21228753Smm#ifndef NO_MD5CRYPT_1 22228753Smm# include <openssl/md5.h> 23228753Smm#endif 24228753Smm 25228763Smm 26228753Smm#undef PROG 27228753Smm#define PROG passwd_main 28228753Smm 29228753Smm 30228753Smmstatic unsigned const char cov_2char[64]={ 31232153Smm /* from crypto/des/fcrypt.c */ 32248616Smm 0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35, 33232153Smm 0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44, 34228753Smm 0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C, 35228753Smm 0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54, 36228753Smm 0x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62, 37228753Smm 0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A, 38228753Smm 0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72, 39228753Smm 0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A 40228753Smm}; 41228753Smm 42228753Smmstatic int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p, 43228753Smm char *passwd, BIO *out, int quiet, int table, int reverse, 44228753Smm size_t pw_maxlen, int usecrypt, int use1, int useapr1); 45228753Smm 46228753Smm/* -crypt - standard Unix password algorithm (default) 47228753Smm * -1 - MD5-based password algorithm 48228753Smm * -apr1 - MD5-based password algorithm, Apache variant 49228753Smm * -salt string - salt 50238856Smm * -in file - read passwords from file 51228753Smm * -stdin - read passwords from stdin 52238856Smm * -noverify - never verify when reading password from terminal 53228753Smm * -quiet - no warnings 54228753Smm * -table - format output as table 55232153Smm * -reverse - switch table columns 56232153Smm */ 57232153Smm 58232153Smmint MAIN(int, char **); 59232153Smm 60238856Smmint MAIN(int argc, char **argv) 61238856Smm { 62238856Smm int ret = 1; 63238856Smm char *infile = NULL; 64238856Smm int in_stdin = 0; 65238856Smm int in_noverify = 0; 66238856Smm char *salt = NULL, *passwd = NULL, **passwds = NULL; 67238856Smm char *salt_malloc = NULL, *passwd_malloc = NULL; 68238856Smm size_t passwd_malloc_size = 0; 69232153Smm int pw_source_defined = 0; 70228753Smm BIO *in = NULL, *out = NULL; 71228753Smm int i, badopt, opt_done; 72228753Smm int passed_salt = 0, quiet = 0, table = 0, reverse = 0; 73228753Smm int usecrypt = 0, use1 = 0, useapr1 = 0; 74228753Smm size_t pw_maxlen = 0; 75228753Smm 76228753Smm apps_startup(); 77228753Smm 78228753Smm if (bio_err == NULL) 79228753Smm if ((bio_err=BIO_new(BIO_s_file())) != NULL) 80228753Smm BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 81228753Smm 82228753Smm if (!load_config(bio_err, NULL)) 83228753Smm goto err; 84228753Smm out = BIO_new(BIO_s_file()); 85228753Smm if (out == NULL) 86232153Smm goto err; 87228753Smm BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT); 88228753Smm#ifdef OPENSSL_SYS_VMS 89228753Smm { 90228753Smm BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 91228753Smm out = BIO_push(tmpbio, out); 92228753Smm } 93228753Smm#endif 94228753Smm 95228753Smm badopt = 0, opt_done = 0; 96228753Smm i = 0; 97228753Smm while (!badopt && !opt_done && argv[++i] != NULL) 98228753Smm { 99228753Smm if (strcmp(argv[i], "-crypt") == 0) 100228753Smm usecrypt = 1; 101228753Smm else if (strcmp(argv[i], "-1") == 0) 102228753Smm use1 = 1; 103228753Smm else if (strcmp(argv[i], "-apr1") == 0) 104228753Smm useapr1 = 1; 105228753Smm else if (strcmp(argv[i], "-salt") == 0) 106228753Smm { 107228753Smm if ((argv[i+1] != NULL) && (salt == NULL)) 108228753Smm { 109228753Smm passed_salt = 1; 110228753Smm salt = argv[++i]; 111228753Smm } 112228753Smm else 113228753Smm badopt = 1; 114228753Smm } 115228753Smm else if (strcmp(argv[i], "-in") == 0) 116232153Smm { 117228753Smm if ((argv[i+1] != NULL) && !pw_source_defined) 118228753Smm { 119228753Smm pw_source_defined = 1; 120228753Smm infile = argv[++i]; 121228753Smm } 122228753Smm else 123228753Smm badopt = 1; 124228753Smm } 125228753Smm else if (strcmp(argv[i], "-stdin") == 0) 126228753Smm { 127228753Smm if (!pw_source_defined) 128228753Smm { 129228753Smm pw_source_defined = 1; 130228753Smm in_stdin = 1; 131228753Smm } 132228753Smm else 133228753Smm badopt = 1; 134228753Smm } 135228753Smm else if (strcmp(argv[i], "-noverify") == 0) 136228753Smm in_noverify = 1; 137228753Smm else if (strcmp(argv[i], "-quiet") == 0) 138228753Smm quiet = 1; 139228753Smm else if (strcmp(argv[i], "-table") == 0) 140238856Smm table = 1; 141238856Smm else if (strcmp(argv[i], "-reverse") == 0) 142238856Smm reverse = 1; 143238856Smm else if (argv[i][0] == '-') 144238856Smm badopt = 1; 145238856Smm else if (!pw_source_defined) 146238856Smm /* non-option arguments, use as passwords */ 147238856Smm { 148238856Smm pw_source_defined = 1; 149238856Smm passwds = &argv[i]; 150238856Smm opt_done = 1; 151238856Smm } 152228753Smm else 153228753Smm badopt = 1; 154228753Smm } 155228753Smm 156228753Smm if (!usecrypt && !use1 && !useapr1) /* use default */ 157228753Smm usecrypt = 1; 158228753Smm if (usecrypt + use1 + useapr1 > 1) /* conflict */ 159228753Smm badopt = 1; 160228753Smm 161228753Smm /* reject unsupported algorithms */ 162228753Smm#ifdef OPENSSL_NO_DES 163228753Smm if (usecrypt) badopt = 1; 164232153Smm#endif 165232153Smm#ifdef NO_MD5CRYPT_1 166232153Smm if (use1 || useapr1) badopt = 1; 167232153Smm#endif 168232153Smm 169232153Smm if (badopt) 170232153Smm { 171232153Smm BIO_printf(bio_err, "Usage: passwd [options] [passwords]\n"); 172232153Smm BIO_printf(bio_err, "where options are\n"); 173228753Smm#ifndef OPENSSL_NO_DES 174228753Smm BIO_printf(bio_err, "-crypt standard Unix password algorithm (default)\n"); 175228753Smm#endif 176228753Smm#ifndef NO_MD5CRYPT_1 177228753Smm BIO_printf(bio_err, "-1 MD5-based password algorithm\n"); 178228753Smm BIO_printf(bio_err, "-apr1 MD5-based password algorithm, Apache variant\n"); 179228753Smm#endif 180228753Smm BIO_printf(bio_err, "-salt string use provided salt\n"); 181228753Smm BIO_printf(bio_err, "-in file read passwords from file\n"); 182228753Smm BIO_printf(bio_err, "-stdin read passwords from stdin\n"); 183228753Smm BIO_printf(bio_err, "-noverify never verify when reading password from terminal\n"); 184228753Smm BIO_printf(bio_err, "-quiet no warnings\n"); 185228753Smm BIO_printf(bio_err, "-table format output as table\n"); 186228753Smm BIO_printf(bio_err, "-reverse switch table columns\n"); 187228753Smm 188228753Smm goto err; 189228753Smm } 190228753Smm 191228753Smm if ((infile != NULL) || in_stdin) 192228753Smm { 193228753Smm in = BIO_new(BIO_s_file()); 194228753Smm if (in == NULL) 195228753Smm goto err; 196228753Smm if (infile != NULL) 197228753Smm { 198228753Smm assert(in_stdin == 0); 199228753Smm if (BIO_read_filename(in, infile) <= 0) 200228753Smm goto err; 201232153Smm } 202228753Smm else 203228753Smm { 204228753Smm assert(in_stdin); 205228753Smm BIO_set_fp(in, stdin, BIO_NOCLOSE); 206228753Smm } 207228753Smm } 208228753Smm 209232153Smm if (usecrypt) 210228753Smm pw_maxlen = 8; 211228753Smm else if (use1 || useapr1) 212228753Smm pw_maxlen = 256; /* arbitrary limit, should be enough for most passwords */ 213228753Smm 214232153Smm if (passwds == NULL) 215228753Smm { 216232153Smm /* no passwords on the command line */ 217228753Smm 218228753Smm passwd_malloc_size = pw_maxlen + 2; 219228753Smm /* longer than necessary so that we can warn about truncation */ 220228753Smm passwd = passwd_malloc = OPENSSL_malloc(passwd_malloc_size); 221228753Smm if (passwd_malloc == NULL) 222228753Smm goto err; 223228753Smm } 224232153Smm 225228753Smm if ((in == NULL) && (passwds == NULL)) 226228753Smm { 227228753Smm /* build a null-terminated list */ 228228753Smm static char *passwds_static[2] = {NULL, NULL}; 229232153Smm 230228753Smm passwds = passwds_static; 231228753Smm if (in == NULL) 232228753Smm if (EVP_read_pw_string(passwd_malloc, passwd_malloc_size, "Password: ", !(passed_salt || in_noverify)) != 0) 233228753Smm goto err; 234228753Smm passwds[0] = passwd_malloc; 235232153Smm } 236228753Smm 237228753Smm if (in == NULL) 238228753Smm { 239228753Smm assert(passwds != NULL); 240228753Smm assert(*passwds != NULL); 241228753Smm 242232153Smm do /* loop over list of passwords */ 243232153Smm { 244232153Smm passwd = *passwds++; 245232153Smm if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, out, 246228753Smm quiet, table, reverse, pw_maxlen, usecrypt, use1, useapr1)) 247228753Smm goto err; 248228753Smm } 249228753Smm while (*passwds != NULL); 250228753Smm } 251232153Smm else 252228753Smm /* in != NULL */ 253228753Smm { 254228753Smm int done; 255228753Smm 256228753Smm assert (passwd != NULL); 257228753Smm do 258228753Smm { 259228753Smm int r = BIO_gets(in, passwd, pw_maxlen + 1); 260228753Smm if (r > 0) 261228753Smm { 262228753Smm char *c = (strchr(passwd, '\n')) ; 263228753Smm if (c != NULL) 264228753Smm *c = 0; /* truncate at newline */ 265228753Smm else 266228753Smm { 267228753Smm /* ignore rest of line */ 268228753Smm char trash[BUFSIZ]; 269232153Smm do 270228753Smm r = BIO_gets(in, trash, sizeof trash); 271228753Smm while ((r > 0) && (!strchr(trash, '\n'))); 272228753Smm } 273228753Smm 274228753Smm if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, out, 275228753Smm quiet, table, reverse, pw_maxlen, usecrypt, use1, useapr1)) 276228753Smm goto err; 277228753Smm } 278228753Smm done = (r <= 0); 279228753Smm } 280228753Smm while (!done); 281228753Smm } 282228753Smm ret = 0; 283228753Smm 284228753Smmerr: 285228753Smm ERR_print_errors(bio_err); 286228753Smm if (salt_malloc) 287228753Smm OPENSSL_free(salt_malloc); 288228753Smm if (passwd_malloc) 289228753Smm OPENSSL_free(passwd_malloc); 290228753Smm if (in) 291228753Smm BIO_free(in); 292228753Smm if (out) 293228753Smm BIO_free_all(out); 294228753Smm apps_shutdown(); 295228753Smm OPENSSL_EXIT(ret); 296228753Smm } 297228753Smm 298228753Smm 299232153Smm#ifndef NO_MD5CRYPT_1 300228753Smm/* MD5-based password algorithm (should probably be available as a library 301228753Smm * function; then the static buffer would not be acceptable). 302228753Smm * For magic string "1", this should be compatible to the MD5-based BSD 303228753Smm * password algorithm. 304232153Smm * For 'magic' string "apr1", this is compatible to the MD5-based Apache 305228753Smm * password algorithm. 306228753Smm * (Apparently, the Apache password algorithm is identical except that the 307228753Smm * 'magic' string was changed -- the laziest application of the NIH principle 308228753Smm * I've ever encountered.) 309228753Smm */ 310228753Smmstatic char *md5crypt(const char *passwd, const char *magic, const char *salt) 311228753Smm { 312228753Smm static char out_buf[6 + 9 + 24 + 2]; /* "$apr1$..salt..$.......md5hash..........\0" */ 313228753Smm unsigned char buf[MD5_DIGEST_LENGTH]; 314228753Smm char *salt_out; 315228753Smm int n, i; 316238856Smm EVP_MD_CTX md,md2; 317238856Smm size_t passwd_len, salt_len; 318238856Smm 319238856Smm passwd_len = strlen(passwd); 320228753Smm out_buf[0] = '$'; 321228753Smm out_buf[1] = 0; 322228753Smm assert(strlen(magic) <= 4); /* "1" or "apr1" */ 323228753Smm strncat(out_buf, magic, 4); 324232153Smm strncat(out_buf, "$", 1); 325232153Smm strncat(out_buf, salt, 8); 326232153Smm assert(strlen(out_buf) <= 6 + 8); /* "$apr1$..salt.." */ 327232153Smm salt_out = out_buf + 2 + strlen(magic); 328232153Smm salt_len = strlen(salt_out); 329232153Smm assert(salt_len <= 8); 330228753Smm 331232153Smm EVP_MD_CTX_init(&md); 332232153Smm EVP_DigestInit_ex(&md,EVP_md5(), NULL); 333232153Smm EVP_DigestUpdate(&md, passwd, passwd_len); 334228753Smm EVP_DigestUpdate(&md, "$", 1); 335228753Smm EVP_DigestUpdate(&md, magic, strlen(magic)); 336228753Smm EVP_DigestUpdate(&md, "$", 1); 337228753Smm EVP_DigestUpdate(&md, salt_out, salt_len); 338228753Smm 339228753Smm EVP_MD_CTX_init(&md2); 340228753Smm EVP_DigestInit_ex(&md2,EVP_md5(), NULL); 341228753Smm EVP_DigestUpdate(&md2, passwd, passwd_len); 342228753Smm EVP_DigestUpdate(&md2, salt_out, salt_len); 343228753Smm EVP_DigestUpdate(&md2, passwd, passwd_len); 344228753Smm EVP_DigestFinal_ex(&md2, buf, NULL); 345228753Smm 346228753Smm for (i = passwd_len; i > sizeof buf; i -= sizeof buf) 347232153Smm EVP_DigestUpdate(&md, buf, sizeof buf); 348228753Smm EVP_DigestUpdate(&md, buf, i); 349232153Smm 350232153Smm n = passwd_len; 351232153Smm while (n) 352232153Smm { 353232153Smm EVP_DigestUpdate(&md, (n & 1) ? "\0" : passwd, 1); 354232153Smm n >>= 1; 355232153Smm } 356232153Smm EVP_DigestFinal_ex(&md, buf, NULL); 357232153Smm 358232153Smm for (i = 0; i < 1000; i++) 359232153Smm { 360232153Smm EVP_DigestInit_ex(&md2,EVP_md5(), NULL); 361232153Smm EVP_DigestUpdate(&md2, (i & 1) ? (unsigned char *) passwd : buf, 362232153Smm (i & 1) ? passwd_len : sizeof buf); 363232153Smm if (i % 3) 364232153Smm EVP_DigestUpdate(&md2, salt_out, salt_len); 365232153Smm if (i % 7) 366232153Smm EVP_DigestUpdate(&md2, passwd, passwd_len); 367232153Smm EVP_DigestUpdate(&md2, (i & 1) ? buf : (unsigned char *) passwd, 368228753Smm (i & 1) ? sizeof buf : passwd_len); 369232153Smm EVP_DigestFinal_ex(&md2, buf, NULL); 370232153Smm } 371232153Smm EVP_MD_CTX_cleanup(&md2); 372232153Smm 373228753Smm { 374232153Smm /* transform buf into output string */ 375232153Smm 376232153Smm unsigned char buf_perm[sizeof buf]; 377232153Smm int dest, source; 378232153Smm char *output; 379232153Smm 380232153Smm /* silly output permutation */ 381232153Smm for (dest = 0, source = 0; dest < 14; dest++, source = (source + 6) % 17) 382232153Smm buf_perm[dest] = buf[source]; 383232153Smm buf_perm[14] = buf[5]; 384232153Smm buf_perm[15] = buf[11]; 385232153Smm#ifndef PEDANTIC /* Unfortunately, this generates a "no effect" warning */ 386232153Smm assert(16 == sizeof buf_perm); 387232153Smm#endif 388232153Smm 389232153Smm output = salt_out + salt_len; 390232153Smm assert(output == out_buf + strlen(out_buf)); 391232153Smm 392232153Smm *output++ = '$'; 393232153Smm 394232153Smm for (i = 0; i < 15; i += 3) 395232153Smm { 396232153Smm *output++ = cov_2char[buf_perm[i+2] & 0x3f]; 397232153Smm *output++ = cov_2char[((buf_perm[i+1] & 0xf) << 2) | 398232153Smm (buf_perm[i+2] >> 6)]; 399232153Smm *output++ = cov_2char[((buf_perm[i] & 3) << 4) | 400232153Smm (buf_perm[i+1] >> 4)]; 401232153Smm *output++ = cov_2char[buf_perm[i] >> 2]; 402232153Smm } 403232153Smm assert(i == 15); 404232153Smm *output++ = cov_2char[buf_perm[i] & 0x3f]; 405232153Smm *output++ = cov_2char[buf_perm[i] >> 6]; 406232153Smm *output = 0; 407232153Smm assert(strlen(out_buf) < sizeof(out_buf)); 408232153Smm } 409232153Smm EVP_MD_CTX_cleanup(&md); 410232153Smm 411232153Smm return out_buf; 412232153Smm } 413232153Smm#endif 414232153Smm 415232153Smm 416232153Smmstatic int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p, 417232153Smm char *passwd, BIO *out, int quiet, int table, int reverse, 418232153Smm size_t pw_maxlen, int usecrypt, int use1, int useapr1) 419232153Smm { 420232153Smm char *hash = NULL; 421232153Smm 422232153Smm assert(salt_p != NULL); 423232153Smm assert(salt_malloc_p != NULL); 424232153Smm 425228753Smm /* first make sure we have a salt */ 426228753Smm if (!passed_salt) 427228753Smm { 428228753Smm#ifndef OPENSSL_NO_DES 429228753Smm if (usecrypt) 430232153Smm { 431232153Smm if (*salt_malloc_p == NULL) 432232153Smm { 433228753Smm *salt_p = *salt_malloc_p = OPENSSL_malloc(3); 434228753Smm if (*salt_malloc_p == NULL) 435228753Smm goto err; 436228753Smm } 437228753Smm if (RAND_pseudo_bytes((unsigned char *)*salt_p, 2) < 0) 438228753Smm goto err; 439228753Smm (*salt_p)[0] = cov_2char[(*salt_p)[0] & 0x3f]; /* 6 bits */ 440228753Smm (*salt_p)[1] = cov_2char[(*salt_p)[1] & 0x3f]; /* 6 bits */ 441228753Smm (*salt_p)[2] = 0; 442228753Smm#ifdef CHARSET_EBCDIC 443228753Smm ascii2ebcdic(*salt_p, *salt_p, 2); /* des_crypt will convert 444232153Smm * back to ASCII */ 445228753Smm#endif 446228753Smm } 447232153Smm#endif /* !OPENSSL_NO_DES */ 448228753Smm 449228753Smm#ifndef NO_MD5CRYPT_1 450228753Smm if (use1 || useapr1) 451228753Smm { 452228753Smm int i; 453228753Smm 454232153Smm if (*salt_malloc_p == NULL) 455228753Smm { 456228753Smm *salt_p = *salt_malloc_p = OPENSSL_malloc(9); 457228753Smm if (*salt_malloc_p == NULL) 458228753Smm goto err; 459228753Smm } 460228753Smm if (RAND_pseudo_bytes((unsigned char *)*salt_p, 8) < 0) 461228753Smm goto err; 462228753Smm 463228753Smm for (i = 0; i < 8; i++) 464228753Smm (*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */ 465228753Smm (*salt_p)[8] = 0; 466228753Smm } 467228753Smm#endif /* !NO_MD5CRYPT_1 */ 468232153Smm } 469232153Smm 470232153Smm assert(*salt_p != NULL); 471228753Smm 472232153Smm /* truncate password if necessary */ 473232153Smm if ((strlen(passwd) > pw_maxlen)) 474228753Smm { 475232153Smm if (!quiet) 476228753Smm BIO_printf(bio_err, "Warning: truncating password to %u characters\n", pw_maxlen); 477228753Smm passwd[pw_maxlen] = 0; 478228753Smm } 479228753Smm assert(strlen(passwd) <= pw_maxlen); 480228753Smm 481232153Smm /* now compute password hash */ 482232153Smm#ifndef OPENSSL_NO_DES 483228753Smm if (usecrypt) 484228753Smm hash = DES_crypt(passwd, *salt_p); 485228753Smm#endif 486228753Smm#ifndef NO_MD5CRYPT_1 487232153Smm if (use1 || useapr1) 488232153Smm hash = md5crypt(passwd, (use1 ? "1" : "apr1"), *salt_p); 489232153Smm#endif 490232153Smm assert(hash != NULL); 491228753Smm 492228753Smm if (table && !reverse) 493228753Smm BIO_printf(out, "%s\t%s\n", passwd, hash); 494228753Smm else if (table && reverse) 495228753Smm BIO_printf(out, "%s\t%s\n", hash, passwd); 496228753Smm else 497228753Smm BIO_printf(out, "%s\n", hash); 498228753Smm return 1; 499228753Smm 500228753Smmerr: 501228753Smm return 0; 502228753Smm } 503228753Smm#else 504228753Smm 505228753Smmint MAIN(int argc, char **argv) 506228753Smm { 507228753Smm fputs("Program not available.\n", stderr) 508228753Smm OPENSSL_EXIT(1); 509228753Smm } 510228753Smm#endif 511228753Smm