1/*
2 * Copyright 1995-2019 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#if !defined(_POSIX_C_SOURCE) && defined(OPENSSL_SYS_VMS)
11/*
12 * On VMS, you need to define this to get the declaration of fileno().  The
13 * value 2 is to make sure no function defined in POSIX-2 is left undefined.
14 */
15# define _POSIX_C_SOURCE 2
16#endif
17
18#include <stdio.h>
19#include <stdlib.h>
20#include <string.h>
21#include <sys/types.h>
22#ifndef OPENSSL_NO_POSIX_IO
23# include <sys/stat.h>
24# include <fcntl.h>
25#endif
26#include <ctype.h>
27#include <errno.h>
28#include <openssl/err.h>
29#include <openssl/x509.h>
30#include <openssl/x509v3.h>
31#include <openssl/pem.h>
32#include <openssl/pkcs12.h>
33#include <openssl/ui.h>
34#include <openssl/safestack.h>
35#ifndef OPENSSL_NO_ENGINE
36# include <openssl/engine.h>
37#endif
38#ifndef OPENSSL_NO_RSA
39# include <openssl/rsa.h>
40#endif
41#include <openssl/bn.h>
42#include <openssl/ssl.h>
43#include "apps.h"
44
45#ifdef _WIN32
46static int WIN32_rename(const char *from, const char *to);
47# define rename(from,to) WIN32_rename((from),(to))
48#endif
49
50#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
51# include <conio.h>
52#endif
53
54#if defined(OPENSSL_SYS_MSDOS) && !defined(_WIN32)
55# define _kbhit kbhit
56#endif
57
58typedef struct {
59    const char *name;
60    unsigned long flag;
61    unsigned long mask;
62} NAME_EX_TBL;
63
64static UI_METHOD *ui_method = NULL;
65static const UI_METHOD *ui_fallback_method = NULL;
66
67static int set_table_opts(unsigned long *flags, const char *arg,
68                          const NAME_EX_TBL * in_tbl);
69static int set_multi_opts(unsigned long *flags, const char *arg,
70                          const NAME_EX_TBL * in_tbl);
71
72int app_init(long mesgwin);
73
74int chopup_args(ARGS *arg, char *buf)
75{
76    int quoted;
77    char c = '\0', *p = NULL;
78
79    arg->argc = 0;
80    if (arg->size == 0) {
81        arg->size = 20;
82        arg->argv = app_malloc(sizeof(*arg->argv) * arg->size, "argv space");
83    }
84
85    for (p = buf;;) {
86        /* Skip whitespace. */
87        while (*p && isspace(_UC(*p)))
88            p++;
89        if (!*p)
90            break;
91
92        /* The start of something good :-) */
93        if (arg->argc >= arg->size) {
94            char **tmp;
95            arg->size += 20;
96            tmp = OPENSSL_realloc(arg->argv, sizeof(*arg->argv) * arg->size);
97            if (tmp == NULL)
98                return 0;
99            arg->argv = tmp;
100        }
101        quoted = *p == '\'' || *p == '"';
102        if (quoted)
103            c = *p++;
104        arg->argv[arg->argc++] = p;
105
106        /* now look for the end of this */
107        if (quoted) {
108            while (*p && *p != c)
109                p++;
110            *p++ = '\0';
111        } else {
112            while (*p && !isspace(_UC(*p)))
113                p++;
114            if (*p)
115                *p++ = '\0';
116        }
117    }
118    arg->argv[arg->argc] = NULL;
119    return 1;
120}
121
122#ifndef APP_INIT
123int app_init(long mesgwin)
124{
125    return 1;
126}
127#endif
128
129int ctx_set_verify_locations(SSL_CTX *ctx, const char *CAfile,
130                             const char *CApath, int noCAfile, int noCApath)
131{
132    if (CAfile == NULL && CApath == NULL) {
133        if (!noCAfile && SSL_CTX_set_default_verify_file(ctx) <= 0)
134            return 0;
135        if (!noCApath && SSL_CTX_set_default_verify_dir(ctx) <= 0)
136            return 0;
137
138        return 1;
139    }
140    return SSL_CTX_load_verify_locations(ctx, CAfile, CApath);
141}
142
143#ifndef OPENSSL_NO_CT
144
145int ctx_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
146{
147    if (path == NULL)
148        return SSL_CTX_set_default_ctlog_list_file(ctx);
149
150    return SSL_CTX_set_ctlog_list_file(ctx, path);
151}
152
153#endif
154
155static unsigned long nmflag = 0;
156static char nmflag_set = 0;
157
158int set_nameopt(const char *arg)
159{
160    int ret = set_name_ex(&nmflag, arg);
161
162    if (ret)
163        nmflag_set = 1;
164
165    return ret;
166}
167
168unsigned long get_nameopt(void)
169{
170    return (nmflag_set) ? nmflag : XN_FLAG_ONELINE;
171}
172
173int dump_cert_text(BIO *out, X509 *x)
174{
175    print_name(out, "subject=", X509_get_subject_name(x), get_nameopt());
176    BIO_puts(out, "\n");
177    print_name(out, "issuer=", X509_get_issuer_name(x), get_nameopt());
178    BIO_puts(out, "\n");
179
180    return 0;
181}
182
183static int ui_open(UI *ui)
184{
185    int (*opener)(UI *ui) = UI_method_get_opener(ui_fallback_method);
186
187    if (opener)
188        return opener(ui);
189    return 1;
190}
191
192static int ui_read(UI *ui, UI_STRING *uis)
193{
194    int (*reader)(UI *ui, UI_STRING *uis) = NULL;
195
196    if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
197        && UI_get0_user_data(ui)) {
198        switch (UI_get_string_type(uis)) {
199        case UIT_PROMPT:
200        case UIT_VERIFY:
201            {
202                const char *password =
203                    ((PW_CB_DATA *)UI_get0_user_data(ui))->password;
204                if (password && password[0] != '\0') {
205                    UI_set_result(ui, uis, password);
206                    return 1;
207                }
208            }
209            break;
210        case UIT_NONE:
211        case UIT_BOOLEAN:
212        case UIT_INFO:
213        case UIT_ERROR:
214            break;
215        }
216    }
217
218    reader = UI_method_get_reader(ui_fallback_method);
219    if (reader)
220        return reader(ui, uis);
221    return 1;
222}
223
224static int ui_write(UI *ui, UI_STRING *uis)
225{
226    int (*writer)(UI *ui, UI_STRING *uis) = NULL;
227
228    if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
229        && UI_get0_user_data(ui)) {
230        switch (UI_get_string_type(uis)) {
231        case UIT_PROMPT:
232        case UIT_VERIFY:
233            {
234                const char *password =
235                    ((PW_CB_DATA *)UI_get0_user_data(ui))->password;
236                if (password && password[0] != '\0')
237                    return 1;
238            }
239            break;
240        case UIT_NONE:
241        case UIT_BOOLEAN:
242        case UIT_INFO:
243        case UIT_ERROR:
244            break;
245        }
246    }
247
248    writer = UI_method_get_writer(ui_fallback_method);
249    if (writer)
250        return writer(ui, uis);
251    return 1;
252}
253
254static int ui_close(UI *ui)
255{
256    int (*closer)(UI *ui) = UI_method_get_closer(ui_fallback_method);
257
258    if (closer)
259        return closer(ui);
260    return 1;
261}
262
263int setup_ui_method(void)
264{
265    ui_fallback_method = UI_null();
266#ifndef OPENSSL_NO_UI_CONSOLE
267    ui_fallback_method = UI_OpenSSL();
268#endif
269    ui_method = UI_create_method("OpenSSL application user interface");
270    UI_method_set_opener(ui_method, ui_open);
271    UI_method_set_reader(ui_method, ui_read);
272    UI_method_set_writer(ui_method, ui_write);
273    UI_method_set_closer(ui_method, ui_close);
274    return 0;
275}
276
277void destroy_ui_method(void)
278{
279    if (ui_method) {
280        UI_destroy_method(ui_method);
281        ui_method = NULL;
282    }
283}
284
285const UI_METHOD *get_ui_method(void)
286{
287    return ui_method;
288}
289
290int password_callback(char *buf, int bufsiz, int verify, PW_CB_DATA *cb_tmp)
291{
292    int res = 0;
293    UI *ui = NULL;
294    PW_CB_DATA *cb_data = (PW_CB_DATA *)cb_tmp;
295
296    ui = UI_new_method(ui_method);
297    if (ui) {
298        int ok = 0;
299        char *buff = NULL;
300        int ui_flags = 0;
301        const char *prompt_info = NULL;
302        char *prompt;
303
304        if (cb_data != NULL && cb_data->prompt_info != NULL)
305            prompt_info = cb_data->prompt_info;
306        prompt = UI_construct_prompt(ui, "pass phrase", prompt_info);
307        if (!prompt) {
308            BIO_printf(bio_err, "Out of memory\n");
309            UI_free(ui);
310            return 0;
311        }
312
313        ui_flags |= UI_INPUT_FLAG_DEFAULT_PWD;
314        UI_ctrl(ui, UI_CTRL_PRINT_ERRORS, 1, 0, 0);
315
316        /* We know that there is no previous user data to return to us */
317        (void)UI_add_user_data(ui, cb_data);
318
319        ok = UI_add_input_string(ui, prompt, ui_flags, buf,
320                                 PW_MIN_LENGTH, bufsiz - 1);
321
322        if (ok >= 0 && verify) {
323            buff = app_malloc(bufsiz, "password buffer");
324            ok = UI_add_verify_string(ui, prompt, ui_flags, buff,
325                                      PW_MIN_LENGTH, bufsiz - 1, buf);
326        }
327        if (ok >= 0)
328            do {
329                ok = UI_process(ui);
330            } while (ok < 0 && UI_ctrl(ui, UI_CTRL_IS_REDOABLE, 0, 0, 0));
331
332        OPENSSL_clear_free(buff, (unsigned int)bufsiz);
333
334        if (ok >= 0)
335            res = strlen(buf);
336        if (ok == -1) {
337            BIO_printf(bio_err, "User interface error\n");
338            ERR_print_errors(bio_err);
339            OPENSSL_cleanse(buf, (unsigned int)bufsiz);
340            res = 0;
341        }
342        if (ok == -2) {
343            BIO_printf(bio_err, "aborted!\n");
344            OPENSSL_cleanse(buf, (unsigned int)bufsiz);
345            res = 0;
346        }
347        UI_free(ui);
348        OPENSSL_free(prompt);
349    }
350    return res;
351}
352
353static char *app_get_pass(const char *arg, int keepbio);
354
355int app_passwd(const char *arg1, const char *arg2, char **pass1, char **pass2)
356{
357    int same;
358    if (arg2 == NULL || arg1 == NULL || strcmp(arg1, arg2))
359        same = 0;
360    else
361        same = 1;
362    if (arg1 != NULL) {
363        *pass1 = app_get_pass(arg1, same);
364        if (*pass1 == NULL)
365            return 0;
366    } else if (pass1 != NULL) {
367        *pass1 = NULL;
368    }
369    if (arg2 != NULL) {
370        *pass2 = app_get_pass(arg2, same ? 2 : 0);
371        if (*pass2 == NULL)
372            return 0;
373    } else if (pass2 != NULL) {
374        *pass2 = NULL;
375    }
376    return 1;
377}
378
379static char *app_get_pass(const char *arg, int keepbio)
380{
381    char *tmp, tpass[APP_PASS_LEN];
382    static BIO *pwdbio = NULL;
383    int i;
384
385    if (strncmp(arg, "pass:", 5) == 0)
386        return OPENSSL_strdup(arg + 5);
387    if (strncmp(arg, "env:", 4) == 0) {
388        tmp = getenv(arg + 4);
389        if (tmp == NULL) {
390            BIO_printf(bio_err, "Can't read environment variable %s\n", arg + 4);
391            return NULL;
392        }
393        return OPENSSL_strdup(tmp);
394    }
395    if (!keepbio || pwdbio == NULL) {
396        if (strncmp(arg, "file:", 5) == 0) {
397            pwdbio = BIO_new_file(arg + 5, "r");
398            if (pwdbio == NULL) {
399                BIO_printf(bio_err, "Can't open file %s\n", arg + 5);
400                return NULL;
401            }
402#if !defined(_WIN32)
403            /*
404             * Under _WIN32, which covers even Win64 and CE, file
405             * descriptors referenced by BIO_s_fd are not inherited
406             * by child process and therefore below is not an option.
407             * It could have been an option if bss_fd.c was operating
408             * on real Windows descriptors, such as those obtained
409             * with CreateFile.
410             */
411        } else if (strncmp(arg, "fd:", 3) == 0) {
412            BIO *btmp;
413            i = atoi(arg + 3);
414            if (i >= 0)
415                pwdbio = BIO_new_fd(i, BIO_NOCLOSE);
416            if ((i < 0) || !pwdbio) {
417                BIO_printf(bio_err, "Can't access file descriptor %s\n", arg + 3);
418                return NULL;
419            }
420            /*
421             * Can't do BIO_gets on an fd BIO so add a buffering BIO
422             */
423            btmp = BIO_new(BIO_f_buffer());
424            pwdbio = BIO_push(btmp, pwdbio);
425#endif
426        } else if (strcmp(arg, "stdin") == 0) {
427            pwdbio = dup_bio_in(FORMAT_TEXT);
428            if (!pwdbio) {
429                BIO_printf(bio_err, "Can't open BIO for stdin\n");
430                return NULL;
431            }
432        } else {
433            BIO_printf(bio_err, "Invalid password argument \"%s\"\n", arg);
434            return NULL;
435        }
436    }
437    i = BIO_gets(pwdbio, tpass, APP_PASS_LEN);
438    if (keepbio != 1) {
439        BIO_free_all(pwdbio);
440        pwdbio = NULL;
441    }
442    if (i <= 0) {
443        BIO_printf(bio_err, "Error reading password from BIO\n");
444        return NULL;
445    }
446    tmp = strchr(tpass, '\n');
447    if (tmp != NULL)
448        *tmp = 0;
449    return OPENSSL_strdup(tpass);
450}
451
452CONF *app_load_config_bio(BIO *in, const char *filename)
453{
454    long errorline = -1;
455    CONF *conf;
456    int i;
457
458    conf = NCONF_new(NULL);
459    i = NCONF_load_bio(conf, in, &errorline);
460    if (i > 0)
461        return conf;
462
463    if (errorline <= 0) {
464        BIO_printf(bio_err, "%s: Can't load ", opt_getprog());
465    } else {
466        BIO_printf(bio_err, "%s: Error on line %ld of ", opt_getprog(),
467                   errorline);
468    }
469    if (filename != NULL)
470        BIO_printf(bio_err, "config file \"%s\"\n", filename);
471    else
472        BIO_printf(bio_err, "config input");
473
474    NCONF_free(conf);
475    return NULL;
476}
477
478CONF *app_load_config(const char *filename)
479{
480    BIO *in;
481    CONF *conf;
482
483    in = bio_open_default(filename, 'r', FORMAT_TEXT);
484    if (in == NULL)
485        return NULL;
486
487    conf = app_load_config_bio(in, filename);
488    BIO_free(in);
489    return conf;
490}
491
492CONF *app_load_config_quiet(const char *filename)
493{
494    BIO *in;
495    CONF *conf;
496
497    in = bio_open_default_quiet(filename, 'r', FORMAT_TEXT);
498    if (in == NULL)
499        return NULL;
500
501    conf = app_load_config_bio(in, filename);
502    BIO_free(in);
503    return conf;
504}
505
506int app_load_modules(const CONF *config)
507{
508    CONF *to_free = NULL;
509
510    if (config == NULL)
511        config = to_free = app_load_config_quiet(default_config_file);
512    if (config == NULL)
513        return 1;
514
515    if (CONF_modules_load(config, NULL, 0) <= 0) {
516        BIO_printf(bio_err, "Error configuring OpenSSL modules\n");
517        ERR_print_errors(bio_err);
518        NCONF_free(to_free);
519        return 0;
520    }
521    NCONF_free(to_free);
522    return 1;
523}
524
525int add_oid_section(CONF *conf)
526{
527    char *p;
528    STACK_OF(CONF_VALUE) *sktmp;
529    CONF_VALUE *cnf;
530    int i;
531
532    if ((p = NCONF_get_string(conf, NULL, "oid_section")) == NULL) {
533        ERR_clear_error();
534        return 1;
535    }
536    if ((sktmp = NCONF_get_section(conf, p)) == NULL) {
537        BIO_printf(bio_err, "problem loading oid section %s\n", p);
538        return 0;
539    }
540    for (i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
541        cnf = sk_CONF_VALUE_value(sktmp, i);
542        if (OBJ_create(cnf->value, cnf->name, cnf->name) == NID_undef) {
543            BIO_printf(bio_err, "problem creating object %s=%s\n",
544                       cnf->name, cnf->value);
545            return 0;
546        }
547    }
548    return 1;
549}
550
551static int load_pkcs12(BIO *in, const char *desc,
552                       pem_password_cb *pem_cb, void *cb_data,
553                       EVP_PKEY **pkey, X509 **cert, STACK_OF(X509) **ca)
554{
555    const char *pass;
556    char tpass[PEM_BUFSIZE];
557    int len, ret = 0;
558    PKCS12 *p12;
559    p12 = d2i_PKCS12_bio(in, NULL);
560    if (p12 == NULL) {
561        BIO_printf(bio_err, "Error loading PKCS12 file for %s\n", desc);
562        goto die;
563    }
564    /* See if an empty password will do */
565    if (PKCS12_verify_mac(p12, "", 0) || PKCS12_verify_mac(p12, NULL, 0)) {
566        pass = "";
567    } else {
568        if (!pem_cb)
569            pem_cb = (pem_password_cb *)password_callback;
570        len = pem_cb(tpass, PEM_BUFSIZE, 0, cb_data);
571        if (len < 0) {
572            BIO_printf(bio_err, "Passphrase callback error for %s\n", desc);
573            goto die;
574        }
575        if (len < PEM_BUFSIZE)
576            tpass[len] = 0;
577        if (!PKCS12_verify_mac(p12, tpass, len)) {
578            BIO_printf(bio_err,
579                       "Mac verify error (wrong password?) in PKCS12 file for %s\n",
580                       desc);
581            goto die;
582        }
583        pass = tpass;
584    }
585    ret = PKCS12_parse(p12, pass, pkey, cert, ca);
586 die:
587    PKCS12_free(p12);
588    return ret;
589}
590
591#if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
592static int load_cert_crl_http(const char *url, X509 **pcert, X509_CRL **pcrl)
593{
594    char *host = NULL, *port = NULL, *path = NULL;
595    BIO *bio = NULL;
596    OCSP_REQ_CTX *rctx = NULL;
597    int use_ssl, rv = 0;
598    if (!OCSP_parse_url(url, &host, &port, &path, &use_ssl))
599        goto err;
600    if (use_ssl) {
601        BIO_puts(bio_err, "https not supported\n");
602        goto err;
603    }
604    bio = BIO_new_connect(host);
605    if (!bio || !BIO_set_conn_port(bio, port))
606        goto err;
607    rctx = OCSP_REQ_CTX_new(bio, 1024);
608    if (rctx == NULL)
609        goto err;
610    if (!OCSP_REQ_CTX_http(rctx, "GET", path))
611        goto err;
612    if (!OCSP_REQ_CTX_add1_header(rctx, "Host", host))
613        goto err;
614    if (pcert) {
615        do {
616            rv = X509_http_nbio(rctx, pcert);
617        } while (rv == -1);
618    } else {
619        do {
620            rv = X509_CRL_http_nbio(rctx, pcrl);
621        } while (rv == -1);
622    }
623
624 err:
625    OPENSSL_free(host);
626    OPENSSL_free(path);
627    OPENSSL_free(port);
628    BIO_free_all(bio);
629    OCSP_REQ_CTX_free(rctx);
630    if (rv != 1) {
631        BIO_printf(bio_err, "Error loading %s from %s\n",
632                   pcert ? "certificate" : "CRL", url);
633        ERR_print_errors(bio_err);
634    }
635    return rv;
636}
637#endif
638
639X509 *load_cert(const char *file, int format, const char *cert_descrip)
640{
641    X509 *x = NULL;
642    BIO *cert;
643
644    if (format == FORMAT_HTTP) {
645#if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
646        load_cert_crl_http(file, &x, NULL);
647#endif
648        return x;
649    }
650
651    if (file == NULL) {
652        unbuffer(stdin);
653        cert = dup_bio_in(format);
654    } else {
655        cert = bio_open_default(file, 'r', format);
656    }
657    if (cert == NULL)
658        goto end;
659
660    if (format == FORMAT_ASN1) {
661        x = d2i_X509_bio(cert, NULL);
662    } else if (format == FORMAT_PEM) {
663        x = PEM_read_bio_X509_AUX(cert, NULL,
664                                  (pem_password_cb *)password_callback, NULL);
665    } else if (format == FORMAT_PKCS12) {
666        if (!load_pkcs12(cert, cert_descrip, NULL, NULL, NULL, &x, NULL))
667            goto end;
668    } else {
669        BIO_printf(bio_err, "bad input format specified for %s\n", cert_descrip);
670        goto end;
671    }
672 end:
673    if (x == NULL) {
674        BIO_printf(bio_err, "unable to load certificate\n");
675        ERR_print_errors(bio_err);
676    }
677    BIO_free(cert);
678    return x;
679}
680
681X509_CRL *load_crl(const char *infile, int format)
682{
683    X509_CRL *x = NULL;
684    BIO *in = NULL;
685
686    if (format == FORMAT_HTTP) {
687#if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
688        load_cert_crl_http(infile, NULL, &x);
689#endif
690        return x;
691    }
692
693    in = bio_open_default(infile, 'r', format);
694    if (in == NULL)
695        goto end;
696    if (format == FORMAT_ASN1) {
697        x = d2i_X509_CRL_bio(in, NULL);
698    } else if (format == FORMAT_PEM) {
699        x = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
700    } else {
701        BIO_printf(bio_err, "bad input format specified for input crl\n");
702        goto end;
703    }
704    if (x == NULL) {
705        BIO_printf(bio_err, "unable to load CRL\n");
706        ERR_print_errors(bio_err);
707        goto end;
708    }
709
710 end:
711    BIO_free(in);
712    return x;
713}
714
715EVP_PKEY *load_key(const char *file, int format, int maybe_stdin,
716                   const char *pass, ENGINE *e, const char *key_descrip)
717{
718    BIO *key = NULL;
719    EVP_PKEY *pkey = NULL;
720    PW_CB_DATA cb_data;
721
722    cb_data.password = pass;
723    cb_data.prompt_info = file;
724
725    if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE)) {
726        BIO_printf(bio_err, "no keyfile specified\n");
727        goto end;
728    }
729    if (format == FORMAT_ENGINE) {
730        if (e == NULL) {
731            BIO_printf(bio_err, "no engine specified\n");
732        } else {
733#ifndef OPENSSL_NO_ENGINE
734            if (ENGINE_init(e)) {
735                pkey = ENGINE_load_private_key(e, file, ui_method, &cb_data);
736                ENGINE_finish(e);
737            }
738            if (pkey == NULL) {
739                BIO_printf(bio_err, "cannot load %s from engine\n", key_descrip);
740                ERR_print_errors(bio_err);
741            }
742#else
743            BIO_printf(bio_err, "engines not supported\n");
744#endif
745        }
746        goto end;
747    }
748    if (file == NULL && maybe_stdin) {
749        unbuffer(stdin);
750        key = dup_bio_in(format);
751    } else {
752        key = bio_open_default(file, 'r', format);
753    }
754    if (key == NULL)
755        goto end;
756    if (format == FORMAT_ASN1) {
757        pkey = d2i_PrivateKey_bio(key, NULL);
758    } else if (format == FORMAT_PEM) {
759        pkey = PEM_read_bio_PrivateKey(key, NULL,
760                                       (pem_password_cb *)password_callback,
761                                       &cb_data);
762    } else if (format == FORMAT_PKCS12) {
763        if (!load_pkcs12(key, key_descrip,
764                         (pem_password_cb *)password_callback, &cb_data,
765                         &pkey, NULL, NULL))
766            goto end;
767#if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA) && !defined (OPENSSL_NO_RC4)
768    } else if (format == FORMAT_MSBLOB) {
769        pkey = b2i_PrivateKey_bio(key);
770    } else if (format == FORMAT_PVK) {
771        pkey = b2i_PVK_bio(key, (pem_password_cb *)password_callback,
772                           &cb_data);
773#endif
774    } else {
775        BIO_printf(bio_err, "bad input format specified for key file\n");
776        goto end;
777    }
778 end:
779    BIO_free(key);
780    if (pkey == NULL) {
781        BIO_printf(bio_err, "unable to load %s\n", key_descrip);
782        ERR_print_errors(bio_err);
783    }
784    return pkey;
785}
786
787EVP_PKEY *load_pubkey(const char *file, int format, int maybe_stdin,
788                      const char *pass, ENGINE *e, const char *key_descrip)
789{
790    BIO *key = NULL;
791    EVP_PKEY *pkey = NULL;
792    PW_CB_DATA cb_data;
793
794    cb_data.password = pass;
795    cb_data.prompt_info = file;
796
797    if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE)) {
798        BIO_printf(bio_err, "no keyfile specified\n");
799        goto end;
800    }
801    if (format == FORMAT_ENGINE) {
802        if (e == NULL) {
803            BIO_printf(bio_err, "no engine specified\n");
804        } else {
805#ifndef OPENSSL_NO_ENGINE
806            pkey = ENGINE_load_public_key(e, file, ui_method, &cb_data);
807            if (pkey == NULL) {
808                BIO_printf(bio_err, "cannot load %s from engine\n", key_descrip);
809                ERR_print_errors(bio_err);
810            }
811#else
812            BIO_printf(bio_err, "engines not supported\n");
813#endif
814        }
815        goto end;
816    }
817    if (file == NULL && maybe_stdin) {
818        unbuffer(stdin);
819        key = dup_bio_in(format);
820    } else {
821        key = bio_open_default(file, 'r', format);
822    }
823    if (key == NULL)
824        goto end;
825    if (format == FORMAT_ASN1) {
826        pkey = d2i_PUBKEY_bio(key, NULL);
827    } else if (format == FORMAT_ASN1RSA) {
828#ifndef OPENSSL_NO_RSA
829        RSA *rsa;
830        rsa = d2i_RSAPublicKey_bio(key, NULL);
831        if (rsa) {
832            pkey = EVP_PKEY_new();
833            if (pkey != NULL)
834                EVP_PKEY_set1_RSA(pkey, rsa);
835            RSA_free(rsa);
836        } else
837#else
838        BIO_printf(bio_err, "RSA keys not supported\n");
839#endif
840            pkey = NULL;
841    } else if (format == FORMAT_PEMRSA) {
842#ifndef OPENSSL_NO_RSA
843        RSA *rsa;
844        rsa = PEM_read_bio_RSAPublicKey(key, NULL,
845                                        (pem_password_cb *)password_callback,
846                                        &cb_data);
847        if (rsa != NULL) {
848            pkey = EVP_PKEY_new();
849            if (pkey != NULL)
850                EVP_PKEY_set1_RSA(pkey, rsa);
851            RSA_free(rsa);
852        } else
853#else
854        BIO_printf(bio_err, "RSA keys not supported\n");
855#endif
856            pkey = NULL;
857    } else if (format == FORMAT_PEM) {
858        pkey = PEM_read_bio_PUBKEY(key, NULL,
859                                   (pem_password_cb *)password_callback,
860                                   &cb_data);
861#if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA)
862    } else if (format == FORMAT_MSBLOB) {
863        pkey = b2i_PublicKey_bio(key);
864#endif
865    }
866 end:
867    BIO_free(key);
868    if (pkey == NULL)
869        BIO_printf(bio_err, "unable to load %s\n", key_descrip);
870    return pkey;
871}
872
873static int load_certs_crls(const char *file, int format,
874                           const char *pass, const char *desc,
875                           STACK_OF(X509) **pcerts,
876                           STACK_OF(X509_CRL) **pcrls)
877{
878    int i;
879    BIO *bio;
880    STACK_OF(X509_INFO) *xis = NULL;
881    X509_INFO *xi;
882    PW_CB_DATA cb_data;
883    int rv = 0;
884
885    cb_data.password = pass;
886    cb_data.prompt_info = file;
887
888    if (format != FORMAT_PEM) {
889        BIO_printf(bio_err, "bad input format specified for %s\n", desc);
890        return 0;
891    }
892
893    bio = bio_open_default(file, 'r', FORMAT_PEM);
894    if (bio == NULL)
895        return 0;
896
897    xis = PEM_X509_INFO_read_bio(bio, NULL,
898                                 (pem_password_cb *)password_callback,
899                                 &cb_data);
900
901    BIO_free(bio);
902
903    if (pcerts != NULL && *pcerts == NULL) {
904        *pcerts = sk_X509_new_null();
905        if (*pcerts == NULL)
906            goto end;
907    }
908
909    if (pcrls != NULL && *pcrls == NULL) {
910        *pcrls = sk_X509_CRL_new_null();
911        if (*pcrls == NULL)
912            goto end;
913    }
914
915    for (i = 0; i < sk_X509_INFO_num(xis); i++) {
916        xi = sk_X509_INFO_value(xis, i);
917        if (xi->x509 != NULL && pcerts != NULL) {
918            if (!sk_X509_push(*pcerts, xi->x509))
919                goto end;
920            xi->x509 = NULL;
921        }
922        if (xi->crl != NULL && pcrls != NULL) {
923            if (!sk_X509_CRL_push(*pcrls, xi->crl))
924                goto end;
925            xi->crl = NULL;
926        }
927    }
928
929    if (pcerts != NULL && sk_X509_num(*pcerts) > 0)
930        rv = 1;
931
932    if (pcrls != NULL && sk_X509_CRL_num(*pcrls) > 0)
933        rv = 1;
934
935 end:
936
937    sk_X509_INFO_pop_free(xis, X509_INFO_free);
938
939    if (rv == 0) {
940        if (pcerts != NULL) {
941            sk_X509_pop_free(*pcerts, X509_free);
942            *pcerts = NULL;
943        }
944        if (pcrls != NULL) {
945            sk_X509_CRL_pop_free(*pcrls, X509_CRL_free);
946            *pcrls = NULL;
947        }
948        BIO_printf(bio_err, "unable to load %s\n",
949                   pcerts ? "certificates" : "CRLs");
950        ERR_print_errors(bio_err);
951    }
952    return rv;
953}
954
955void* app_malloc(int sz, const char *what)
956{
957    void *vp = OPENSSL_malloc(sz);
958
959    if (vp == NULL) {
960        BIO_printf(bio_err, "%s: Could not allocate %d bytes for %s\n",
961                opt_getprog(), sz, what);
962        ERR_print_errors(bio_err);
963        exit(1);
964    }
965    return vp;
966}
967
968/*
969 * Initialize or extend, if *certs != NULL, a certificate stack.
970 */
971int load_certs(const char *file, STACK_OF(X509) **certs, int format,
972               const char *pass, const char *desc)
973{
974    return load_certs_crls(file, format, pass, desc, certs, NULL);
975}
976
977/*
978 * Initialize or extend, if *crls != NULL, a certificate stack.
979 */
980int load_crls(const char *file, STACK_OF(X509_CRL) **crls, int format,
981              const char *pass, const char *desc)
982{
983    return load_certs_crls(file, format, pass, desc, NULL, crls);
984}
985
986#define X509V3_EXT_UNKNOWN_MASK         (0xfL << 16)
987/* Return error for unknown extensions */
988#define X509V3_EXT_DEFAULT              0
989/* Print error for unknown extensions */
990#define X509V3_EXT_ERROR_UNKNOWN        (1L << 16)
991/* ASN1 parse unknown extensions */
992#define X509V3_EXT_PARSE_UNKNOWN        (2L << 16)
993/* BIO_dump unknown extensions */
994#define X509V3_EXT_DUMP_UNKNOWN         (3L << 16)
995
996#define X509_FLAG_CA (X509_FLAG_NO_ISSUER | X509_FLAG_NO_PUBKEY | \
997                         X509_FLAG_NO_HEADER | X509_FLAG_NO_VERSION)
998
999int set_cert_ex(unsigned long *flags, const char *arg)
1000{
1001    static const NAME_EX_TBL cert_tbl[] = {
1002        {"compatible", X509_FLAG_COMPAT, 0xffffffffl},
1003        {"ca_default", X509_FLAG_CA, 0xffffffffl},
1004        {"no_header", X509_FLAG_NO_HEADER, 0},
1005        {"no_version", X509_FLAG_NO_VERSION, 0},
1006        {"no_serial", X509_FLAG_NO_SERIAL, 0},
1007        {"no_signame", X509_FLAG_NO_SIGNAME, 0},
1008        {"no_validity", X509_FLAG_NO_VALIDITY, 0},
1009        {"no_subject", X509_FLAG_NO_SUBJECT, 0},
1010        {"no_issuer", X509_FLAG_NO_ISSUER, 0},
1011        {"no_pubkey", X509_FLAG_NO_PUBKEY, 0},
1012        {"no_extensions", X509_FLAG_NO_EXTENSIONS, 0},
1013        {"no_sigdump", X509_FLAG_NO_SIGDUMP, 0},
1014        {"no_aux", X509_FLAG_NO_AUX, 0},
1015        {"no_attributes", X509_FLAG_NO_ATTRIBUTES, 0},
1016        {"ext_default", X509V3_EXT_DEFAULT, X509V3_EXT_UNKNOWN_MASK},
1017        {"ext_error", X509V3_EXT_ERROR_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1018        {"ext_parse", X509V3_EXT_PARSE_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1019        {"ext_dump", X509V3_EXT_DUMP_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1020        {NULL, 0, 0}
1021    };
1022    return set_multi_opts(flags, arg, cert_tbl);
1023}
1024
1025int set_name_ex(unsigned long *flags, const char *arg)
1026{
1027    static const NAME_EX_TBL ex_tbl[] = {
1028        {"esc_2253", ASN1_STRFLGS_ESC_2253, 0},
1029        {"esc_2254", ASN1_STRFLGS_ESC_2254, 0},
1030        {"esc_ctrl", ASN1_STRFLGS_ESC_CTRL, 0},
1031        {"esc_msb", ASN1_STRFLGS_ESC_MSB, 0},
1032        {"use_quote", ASN1_STRFLGS_ESC_QUOTE, 0},
1033        {"utf8", ASN1_STRFLGS_UTF8_CONVERT, 0},
1034        {"ignore_type", ASN1_STRFLGS_IGNORE_TYPE, 0},
1035        {"show_type", ASN1_STRFLGS_SHOW_TYPE, 0},
1036        {"dump_all", ASN1_STRFLGS_DUMP_ALL, 0},
1037        {"dump_nostr", ASN1_STRFLGS_DUMP_UNKNOWN, 0},
1038        {"dump_der", ASN1_STRFLGS_DUMP_DER, 0},
1039        {"compat", XN_FLAG_COMPAT, 0xffffffffL},
1040        {"sep_comma_plus", XN_FLAG_SEP_COMMA_PLUS, XN_FLAG_SEP_MASK},
1041        {"sep_comma_plus_space", XN_FLAG_SEP_CPLUS_SPC, XN_FLAG_SEP_MASK},
1042        {"sep_semi_plus_space", XN_FLAG_SEP_SPLUS_SPC, XN_FLAG_SEP_MASK},
1043        {"sep_multiline", XN_FLAG_SEP_MULTILINE, XN_FLAG_SEP_MASK},
1044        {"dn_rev", XN_FLAG_DN_REV, 0},
1045        {"nofname", XN_FLAG_FN_NONE, XN_FLAG_FN_MASK},
1046        {"sname", XN_FLAG_FN_SN, XN_FLAG_FN_MASK},
1047        {"lname", XN_FLAG_FN_LN, XN_FLAG_FN_MASK},
1048        {"align", XN_FLAG_FN_ALIGN, 0},
1049        {"oid", XN_FLAG_FN_OID, XN_FLAG_FN_MASK},
1050        {"space_eq", XN_FLAG_SPC_EQ, 0},
1051        {"dump_unknown", XN_FLAG_DUMP_UNKNOWN_FIELDS, 0},
1052        {"RFC2253", XN_FLAG_RFC2253, 0xffffffffL},
1053        {"oneline", XN_FLAG_ONELINE, 0xffffffffL},
1054        {"multiline", XN_FLAG_MULTILINE, 0xffffffffL},
1055        {"ca_default", XN_FLAG_MULTILINE, 0xffffffffL},
1056        {NULL, 0, 0}
1057    };
1058    if (set_multi_opts(flags, arg, ex_tbl) == 0)
1059        return 0;
1060    if (*flags != XN_FLAG_COMPAT
1061        && (*flags & XN_FLAG_SEP_MASK) == 0)
1062        *flags |= XN_FLAG_SEP_CPLUS_SPC;
1063    return 1;
1064}
1065
1066int set_ext_copy(int *copy_type, const char *arg)
1067{
1068    if (strcasecmp(arg, "none") == 0)
1069        *copy_type = EXT_COPY_NONE;
1070    else if (strcasecmp(arg, "copy") == 0)
1071        *copy_type = EXT_COPY_ADD;
1072    else if (strcasecmp(arg, "copyall") == 0)
1073        *copy_type = EXT_COPY_ALL;
1074    else
1075        return 0;
1076    return 1;
1077}
1078
1079int copy_extensions(X509 *x, X509_REQ *req, int copy_type)
1080{
1081    STACK_OF(X509_EXTENSION) *exts = NULL;
1082    X509_EXTENSION *ext, *tmpext;
1083    ASN1_OBJECT *obj;
1084    int i, idx, ret = 0;
1085    if (!x || !req || (copy_type == EXT_COPY_NONE))
1086        return 1;
1087    exts = X509_REQ_get_extensions(req);
1088
1089    for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
1090        ext = sk_X509_EXTENSION_value(exts, i);
1091        obj = X509_EXTENSION_get_object(ext);
1092        idx = X509_get_ext_by_OBJ(x, obj, -1);
1093        /* Does extension exist? */
1094        if (idx != -1) {
1095            /* If normal copy don't override existing extension */
1096            if (copy_type == EXT_COPY_ADD)
1097                continue;
1098            /* Delete all extensions of same type */
1099            do {
1100                tmpext = X509_get_ext(x, idx);
1101                X509_delete_ext(x, idx);
1102                X509_EXTENSION_free(tmpext);
1103                idx = X509_get_ext_by_OBJ(x, obj, -1);
1104            } while (idx != -1);
1105        }
1106        if (!X509_add_ext(x, ext, -1))
1107            goto end;
1108    }
1109
1110    ret = 1;
1111
1112 end:
1113
1114    sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
1115
1116    return ret;
1117}
1118
1119static int set_multi_opts(unsigned long *flags, const char *arg,
1120                          const NAME_EX_TBL * in_tbl)
1121{
1122    STACK_OF(CONF_VALUE) *vals;
1123    CONF_VALUE *val;
1124    int i, ret = 1;
1125    if (!arg)
1126        return 0;
1127    vals = X509V3_parse_list(arg);
1128    for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
1129        val = sk_CONF_VALUE_value(vals, i);
1130        if (!set_table_opts(flags, val->name, in_tbl))
1131            ret = 0;
1132    }
1133    sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
1134    return ret;
1135}
1136
1137static int set_table_opts(unsigned long *flags, const char *arg,
1138                          const NAME_EX_TBL * in_tbl)
1139{
1140    char c;
1141    const NAME_EX_TBL *ptbl;
1142    c = arg[0];
1143
1144    if (c == '-') {
1145        c = 0;
1146        arg++;
1147    } else if (c == '+') {
1148        c = 1;
1149        arg++;
1150    } else {
1151        c = 1;
1152    }
1153
1154    for (ptbl = in_tbl; ptbl->name; ptbl++) {
1155        if (strcasecmp(arg, ptbl->name) == 0) {
1156            *flags &= ~ptbl->mask;
1157            if (c)
1158                *flags |= ptbl->flag;
1159            else
1160                *flags &= ~ptbl->flag;
1161            return 1;
1162        }
1163    }
1164    return 0;
1165}
1166
1167void print_name(BIO *out, const char *title, X509_NAME *nm,
1168                unsigned long lflags)
1169{
1170    char *buf;
1171    char mline = 0;
1172    int indent = 0;
1173
1174    if (title)
1175        BIO_puts(out, title);
1176    if ((lflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
1177        mline = 1;
1178        indent = 4;
1179    }
1180    if (lflags == XN_FLAG_COMPAT) {
1181        buf = X509_NAME_oneline(nm, 0, 0);
1182        BIO_puts(out, buf);
1183        BIO_puts(out, "\n");
1184        OPENSSL_free(buf);
1185    } else {
1186        if (mline)
1187            BIO_puts(out, "\n");
1188        X509_NAME_print_ex(out, nm, indent, lflags);
1189        BIO_puts(out, "\n");
1190    }
1191}
1192
1193void print_bignum_var(BIO *out, const BIGNUM *in, const char *var,
1194                      int len, unsigned char *buffer)
1195{
1196    BIO_printf(out, "    static unsigned char %s_%d[] = {", var, len);
1197    if (BN_is_zero(in)) {
1198        BIO_printf(out, "\n        0x00");
1199    } else {
1200        int i, l;
1201
1202        l = BN_bn2bin(in, buffer);
1203        for (i = 0; i < l; i++) {
1204            BIO_printf(out, (i % 10) == 0 ? "\n        " : " ");
1205            if (i < l - 1)
1206                BIO_printf(out, "0x%02X,", buffer[i]);
1207            else
1208                BIO_printf(out, "0x%02X", buffer[i]);
1209        }
1210    }
1211    BIO_printf(out, "\n    };\n");
1212}
1213
1214void print_array(BIO *out, const char* title, int len, const unsigned char* d)
1215{
1216    int i;
1217
1218    BIO_printf(out, "unsigned char %s[%d] = {", title, len);
1219    for (i = 0; i < len; i++) {
1220        if ((i % 10) == 0)
1221            BIO_printf(out, "\n    ");
1222        if (i < len - 1)
1223            BIO_printf(out, "0x%02X, ", d[i]);
1224        else
1225            BIO_printf(out, "0x%02X", d[i]);
1226    }
1227    BIO_printf(out, "\n};\n");
1228}
1229
1230X509_STORE *setup_verify(const char *CAfile, const char *CApath, int noCAfile, int noCApath)
1231{
1232    X509_STORE *store = X509_STORE_new();
1233    X509_LOOKUP *lookup;
1234
1235    if (store == NULL)
1236        goto end;
1237
1238    if (CAfile != NULL || !noCAfile) {
1239        lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
1240        if (lookup == NULL)
1241            goto end;
1242        if (CAfile) {
1243            if (!X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM)) {
1244                BIO_printf(bio_err, "Error loading file %s\n", CAfile);
1245                goto end;
1246            }
1247        } else {
1248            X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
1249        }
1250    }
1251
1252    if (CApath != NULL || !noCApath) {
1253        lookup = X509_STORE_add_lookup(store, X509_LOOKUP_hash_dir());
1254        if (lookup == NULL)
1255            goto end;
1256        if (CApath) {
1257            if (!X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM)) {
1258                BIO_printf(bio_err, "Error loading directory %s\n", CApath);
1259                goto end;
1260            }
1261        } else {
1262            X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
1263        }
1264    }
1265
1266    ERR_clear_error();
1267    return store;
1268 end:
1269    X509_STORE_free(store);
1270    return NULL;
1271}
1272
1273#ifndef OPENSSL_NO_ENGINE
1274/* Try to load an engine in a shareable library */
1275static ENGINE *try_load_engine(const char *engine)
1276{
1277    ENGINE *e = ENGINE_by_id("dynamic");
1278    if (e) {
1279        if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", engine, 0)
1280            || !ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0)) {
1281            ENGINE_free(e);
1282            e = NULL;
1283        }
1284    }
1285    return e;
1286}
1287#endif
1288
1289ENGINE *setup_engine(const char *engine, int debug)
1290{
1291    ENGINE *e = NULL;
1292
1293#ifndef OPENSSL_NO_ENGINE
1294    if (engine != NULL) {
1295        if (strcmp(engine, "auto") == 0) {
1296            BIO_printf(bio_err, "enabling auto ENGINE support\n");
1297            ENGINE_register_all_complete();
1298            return NULL;
1299        }
1300        if ((e = ENGINE_by_id(engine)) == NULL
1301            && (e = try_load_engine(engine)) == NULL) {
1302            BIO_printf(bio_err, "invalid engine \"%s\"\n", engine);
1303            ERR_print_errors(bio_err);
1304            return NULL;
1305        }
1306        if (debug) {
1307            ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM, 0, bio_err, 0);
1308        }
1309        ENGINE_ctrl_cmd(e, "SET_USER_INTERFACE", 0, ui_method, 0, 1);
1310        if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) {
1311            BIO_printf(bio_err, "can't use that engine\n");
1312            ERR_print_errors(bio_err);
1313            ENGINE_free(e);
1314            return NULL;
1315        }
1316
1317        BIO_printf(bio_err, "engine \"%s\" set.\n", ENGINE_get_id(e));
1318    }
1319#endif
1320    return e;
1321}
1322
1323void release_engine(ENGINE *e)
1324{
1325#ifndef OPENSSL_NO_ENGINE
1326    if (e != NULL)
1327        /* Free our "structural" reference. */
1328        ENGINE_free(e);
1329#endif
1330}
1331
1332static unsigned long index_serial_hash(const OPENSSL_CSTRING *a)
1333{
1334    const char *n;
1335
1336    n = a[DB_serial];
1337    while (*n == '0')
1338        n++;
1339    return OPENSSL_LH_strhash(n);
1340}
1341
1342static int index_serial_cmp(const OPENSSL_CSTRING *a,
1343                            const OPENSSL_CSTRING *b)
1344{
1345    const char *aa, *bb;
1346
1347    for (aa = a[DB_serial]; *aa == '0'; aa++) ;
1348    for (bb = b[DB_serial]; *bb == '0'; bb++) ;
1349    return strcmp(aa, bb);
1350}
1351
1352static int index_name_qual(char **a)
1353{
1354    return (a[0][0] == 'V');
1355}
1356
1357static unsigned long index_name_hash(const OPENSSL_CSTRING *a)
1358{
1359    return OPENSSL_LH_strhash(a[DB_name]);
1360}
1361
1362int index_name_cmp(const OPENSSL_CSTRING *a, const OPENSSL_CSTRING *b)
1363{
1364    return strcmp(a[DB_name], b[DB_name]);
1365}
1366
1367static IMPLEMENT_LHASH_HASH_FN(index_serial, OPENSSL_CSTRING)
1368static IMPLEMENT_LHASH_COMP_FN(index_serial, OPENSSL_CSTRING)
1369static IMPLEMENT_LHASH_HASH_FN(index_name, OPENSSL_CSTRING)
1370static IMPLEMENT_LHASH_COMP_FN(index_name, OPENSSL_CSTRING)
1371#undef BSIZE
1372#define BSIZE 256
1373BIGNUM *load_serial(const char *serialfile, int create, ASN1_INTEGER **retai)
1374{
1375    BIO *in = NULL;
1376    BIGNUM *ret = NULL;
1377    char buf[1024];
1378    ASN1_INTEGER *ai = NULL;
1379
1380    ai = ASN1_INTEGER_new();
1381    if (ai == NULL)
1382        goto err;
1383
1384    in = BIO_new_file(serialfile, "r");
1385    if (in == NULL) {
1386        if (!create) {
1387            perror(serialfile);
1388            goto err;
1389        }
1390        ERR_clear_error();
1391        ret = BN_new();
1392        if (ret == NULL || !rand_serial(ret, ai))
1393            BIO_printf(bio_err, "Out of memory\n");
1394    } else {
1395        if (!a2i_ASN1_INTEGER(in, ai, buf, 1024)) {
1396            BIO_printf(bio_err, "unable to load number from %s\n",
1397                       serialfile);
1398            goto err;
1399        }
1400        ret = ASN1_INTEGER_to_BN(ai, NULL);
1401        if (ret == NULL) {
1402            BIO_printf(bio_err,
1403                       "error converting number from bin to BIGNUM\n");
1404            goto err;
1405        }
1406    }
1407
1408    if (ret && retai) {
1409        *retai = ai;
1410        ai = NULL;
1411    }
1412 err:
1413    BIO_free(in);
1414    ASN1_INTEGER_free(ai);
1415    return ret;
1416}
1417
1418int save_serial(const char *serialfile, const char *suffix, const BIGNUM *serial,
1419                ASN1_INTEGER **retai)
1420{
1421    char buf[1][BSIZE];
1422    BIO *out = NULL;
1423    int ret = 0;
1424    ASN1_INTEGER *ai = NULL;
1425    int j;
1426
1427    if (suffix == NULL)
1428        j = strlen(serialfile);
1429    else
1430        j = strlen(serialfile) + strlen(suffix) + 1;
1431    if (j >= BSIZE) {
1432        BIO_printf(bio_err, "file name too long\n");
1433        goto err;
1434    }
1435
1436    if (suffix == NULL)
1437        OPENSSL_strlcpy(buf[0], serialfile, BSIZE);
1438    else {
1439#ifndef OPENSSL_SYS_VMS
1440        j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", serialfile, suffix);
1441#else
1442        j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", serialfile, suffix);
1443#endif
1444    }
1445    out = BIO_new_file(buf[0], "w");
1446    if (out == NULL) {
1447        ERR_print_errors(bio_err);
1448        goto err;
1449    }
1450
1451    if ((ai = BN_to_ASN1_INTEGER(serial, NULL)) == NULL) {
1452        BIO_printf(bio_err, "error converting serial to ASN.1 format\n");
1453        goto err;
1454    }
1455    i2a_ASN1_INTEGER(out, ai);
1456    BIO_puts(out, "\n");
1457    ret = 1;
1458    if (retai) {
1459        *retai = ai;
1460        ai = NULL;
1461    }
1462 err:
1463    BIO_free_all(out);
1464    ASN1_INTEGER_free(ai);
1465    return ret;
1466}
1467
1468int rotate_serial(const char *serialfile, const char *new_suffix,
1469                  const char *old_suffix)
1470{
1471    char buf[2][BSIZE];
1472    int i, j;
1473
1474    i = strlen(serialfile) + strlen(old_suffix);
1475    j = strlen(serialfile) + strlen(new_suffix);
1476    if (i > j)
1477        j = i;
1478    if (j + 1 >= BSIZE) {
1479        BIO_printf(bio_err, "file name too long\n");
1480        goto err;
1481    }
1482#ifndef OPENSSL_SYS_VMS
1483    j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", serialfile, new_suffix);
1484    j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s.%s", serialfile, old_suffix);
1485#else
1486    j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", serialfile, new_suffix);
1487    j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s-%s", serialfile, old_suffix);
1488#endif
1489    if (rename(serialfile, buf[1]) < 0 && errno != ENOENT
1490#ifdef ENOTDIR
1491        && errno != ENOTDIR
1492#endif
1493        ) {
1494        BIO_printf(bio_err,
1495                   "unable to rename %s to %s\n", serialfile, buf[1]);
1496        perror("reason");
1497        goto err;
1498    }
1499    if (rename(buf[0], serialfile) < 0) {
1500        BIO_printf(bio_err,
1501                   "unable to rename %s to %s\n", buf[0], serialfile);
1502        perror("reason");
1503        rename(buf[1], serialfile);
1504        goto err;
1505    }
1506    return 1;
1507 err:
1508    return 0;
1509}
1510
1511int rand_serial(BIGNUM *b, ASN1_INTEGER *ai)
1512{
1513    BIGNUM *btmp;
1514    int ret = 0;
1515
1516    btmp = b == NULL ? BN_new() : b;
1517    if (btmp == NULL)
1518        return 0;
1519
1520    if (!BN_rand(btmp, SERIAL_RAND_BITS, BN_RAND_TOP_ANY, BN_RAND_BOTTOM_ANY))
1521        goto error;
1522    if (ai && !BN_to_ASN1_INTEGER(btmp, ai))
1523        goto error;
1524
1525    ret = 1;
1526
1527 error:
1528
1529    if (btmp != b)
1530        BN_free(btmp);
1531
1532    return ret;
1533}
1534
1535CA_DB *load_index(const char *dbfile, DB_ATTR *db_attr)
1536{
1537    CA_DB *retdb = NULL;
1538    TXT_DB *tmpdb = NULL;
1539    BIO *in;
1540    CONF *dbattr_conf = NULL;
1541    char buf[BSIZE];
1542#ifndef OPENSSL_NO_POSIX_IO
1543    FILE *dbfp;
1544    struct stat dbst;
1545#endif
1546
1547    in = BIO_new_file(dbfile, "r");
1548    if (in == NULL) {
1549        ERR_print_errors(bio_err);
1550        goto err;
1551    }
1552
1553#ifndef OPENSSL_NO_POSIX_IO
1554    BIO_get_fp(in, &dbfp);
1555    if (fstat(fileno(dbfp), &dbst) == -1) {
1556        SYSerr(SYS_F_FSTAT, errno);
1557        ERR_add_error_data(3, "fstat('", dbfile, "')");
1558        ERR_print_errors(bio_err);
1559        goto err;
1560    }
1561#endif
1562
1563    if ((tmpdb = TXT_DB_read(in, DB_NUMBER)) == NULL)
1564        goto err;
1565
1566#ifndef OPENSSL_SYS_VMS
1567    BIO_snprintf(buf, sizeof(buf), "%s.attr", dbfile);
1568#else
1569    BIO_snprintf(buf, sizeof(buf), "%s-attr", dbfile);
1570#endif
1571    dbattr_conf = app_load_config_quiet(buf);
1572
1573    retdb = app_malloc(sizeof(*retdb), "new DB");
1574    retdb->db = tmpdb;
1575    tmpdb = NULL;
1576    if (db_attr)
1577        retdb->attributes = *db_attr;
1578    else {
1579        retdb->attributes.unique_subject = 1;
1580    }
1581
1582    if (dbattr_conf) {
1583        char *p = NCONF_get_string(dbattr_conf, NULL, "unique_subject");
1584        if (p) {
1585            retdb->attributes.unique_subject = parse_yesno(p, 1);
1586        }
1587    }
1588
1589    retdb->dbfname = OPENSSL_strdup(dbfile);
1590#ifndef OPENSSL_NO_POSIX_IO
1591    retdb->dbst = dbst;
1592#endif
1593
1594 err:
1595    NCONF_free(dbattr_conf);
1596    TXT_DB_free(tmpdb);
1597    BIO_free_all(in);
1598    return retdb;
1599}
1600
1601/*
1602 * Returns > 0 on success, <= 0 on error
1603 */
1604int index_index(CA_DB *db)
1605{
1606    if (!TXT_DB_create_index(db->db, DB_serial, NULL,
1607                             LHASH_HASH_FN(index_serial),
1608                             LHASH_COMP_FN(index_serial))) {
1609        BIO_printf(bio_err,
1610                   "error creating serial number index:(%ld,%ld,%ld)\n",
1611                   db->db->error, db->db->arg1, db->db->arg2);
1612        return 0;
1613    }
1614
1615    if (db->attributes.unique_subject
1616        && !TXT_DB_create_index(db->db, DB_name, index_name_qual,
1617                                LHASH_HASH_FN(index_name),
1618                                LHASH_COMP_FN(index_name))) {
1619        BIO_printf(bio_err, "error creating name index:(%ld,%ld,%ld)\n",
1620                   db->db->error, db->db->arg1, db->db->arg2);
1621        return 0;
1622    }
1623    return 1;
1624}
1625
1626int save_index(const char *dbfile, const char *suffix, CA_DB *db)
1627{
1628    char buf[3][BSIZE];
1629    BIO *out;
1630    int j;
1631
1632    j = strlen(dbfile) + strlen(suffix);
1633    if (j + 6 >= BSIZE) {
1634        BIO_printf(bio_err, "file name too long\n");
1635        goto err;
1636    }
1637#ifndef OPENSSL_SYS_VMS
1638    j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s.attr", dbfile);
1639    j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s.attr.%s", dbfile, suffix);
1640    j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", dbfile, suffix);
1641#else
1642    j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s-attr", dbfile);
1643    j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s-attr-%s", dbfile, suffix);
1644    j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", dbfile, suffix);
1645#endif
1646    out = BIO_new_file(buf[0], "w");
1647    if (out == NULL) {
1648        perror(dbfile);
1649        BIO_printf(bio_err, "unable to open '%s'\n", dbfile);
1650        goto err;
1651    }
1652    j = TXT_DB_write(out, db->db);
1653    BIO_free(out);
1654    if (j <= 0)
1655        goto err;
1656
1657    out = BIO_new_file(buf[1], "w");
1658    if (out == NULL) {
1659        perror(buf[2]);
1660        BIO_printf(bio_err, "unable to open '%s'\n", buf[2]);
1661        goto err;
1662    }
1663    BIO_printf(out, "unique_subject = %s\n",
1664               db->attributes.unique_subject ? "yes" : "no");
1665    BIO_free(out);
1666
1667    return 1;
1668 err:
1669    return 0;
1670}
1671
1672int rotate_index(const char *dbfile, const char *new_suffix,
1673                 const char *old_suffix)
1674{
1675    char buf[5][BSIZE];
1676    int i, j;
1677
1678    i = strlen(dbfile) + strlen(old_suffix);
1679    j = strlen(dbfile) + strlen(new_suffix);
1680    if (i > j)
1681        j = i;
1682    if (j + 6 >= BSIZE) {
1683        BIO_printf(bio_err, "file name too long\n");
1684        goto err;
1685    }
1686#ifndef OPENSSL_SYS_VMS
1687    j = BIO_snprintf(buf[4], sizeof(buf[4]), "%s.attr", dbfile);
1688    j = BIO_snprintf(buf[3], sizeof(buf[3]), "%s.attr.%s", dbfile, old_suffix);
1689    j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s.attr.%s", dbfile, new_suffix);
1690    j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s.%s", dbfile, old_suffix);
1691    j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", dbfile, new_suffix);
1692#else
1693    j = BIO_snprintf(buf[4], sizeof(buf[4]), "%s-attr", dbfile);
1694    j = BIO_snprintf(buf[3], sizeof(buf[3]), "%s-attr-%s", dbfile, old_suffix);
1695    j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s-attr-%s", dbfile, new_suffix);
1696    j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s-%s", dbfile, old_suffix);
1697    j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", dbfile, new_suffix);
1698#endif
1699    if (rename(dbfile, buf[1]) < 0 && errno != ENOENT
1700#ifdef ENOTDIR
1701        && errno != ENOTDIR
1702#endif
1703        ) {
1704        BIO_printf(bio_err, "unable to rename %s to %s\n", dbfile, buf[1]);
1705        perror("reason");
1706        goto err;
1707    }
1708    if (rename(buf[0], dbfile) < 0) {
1709        BIO_printf(bio_err, "unable to rename %s to %s\n", buf[0], dbfile);
1710        perror("reason");
1711        rename(buf[1], dbfile);
1712        goto err;
1713    }
1714    if (rename(buf[4], buf[3]) < 0 && errno != ENOENT
1715#ifdef ENOTDIR
1716        && errno != ENOTDIR
1717#endif
1718        ) {
1719        BIO_printf(bio_err, "unable to rename %s to %s\n", buf[4], buf[3]);
1720        perror("reason");
1721        rename(dbfile, buf[0]);
1722        rename(buf[1], dbfile);
1723        goto err;
1724    }
1725    if (rename(buf[2], buf[4]) < 0) {
1726        BIO_printf(bio_err, "unable to rename %s to %s\n", buf[2], buf[4]);
1727        perror("reason");
1728        rename(buf[3], buf[4]);
1729        rename(dbfile, buf[0]);
1730        rename(buf[1], dbfile);
1731        goto err;
1732    }
1733    return 1;
1734 err:
1735    return 0;
1736}
1737
1738void free_index(CA_DB *db)
1739{
1740    if (db) {
1741        TXT_DB_free(db->db);
1742        OPENSSL_free(db->dbfname);
1743        OPENSSL_free(db);
1744    }
1745}
1746
1747int parse_yesno(const char *str, int def)
1748{
1749    if (str) {
1750        switch (*str) {
1751        case 'f':              /* false */
1752        case 'F':              /* FALSE */
1753        case 'n':              /* no */
1754        case 'N':              /* NO */
1755        case '0':              /* 0 */
1756            return 0;
1757        case 't':              /* true */
1758        case 'T':              /* TRUE */
1759        case 'y':              /* yes */
1760        case 'Y':              /* YES */
1761        case '1':              /* 1 */
1762            return 1;
1763        }
1764    }
1765    return def;
1766}
1767
1768/*
1769 * name is expected to be in the format /type0=value0/type1=value1/type2=...
1770 * where characters may be escaped by \
1771 */
1772X509_NAME *parse_name(const char *cp, long chtype, int canmulti)
1773{
1774    int nextismulti = 0;
1775    char *work;
1776    X509_NAME *n;
1777
1778    if (*cp++ != '/') {
1779        BIO_printf(bio_err,
1780                   "name is expected to be in the format "
1781                   "/type0=value0/type1=value1/type2=... where characters may "
1782                   "be escaped by \\. This name is not in that format: '%s'\n",
1783                   --cp);
1784        return NULL;
1785    }
1786
1787    n = X509_NAME_new();
1788    if (n == NULL)
1789        return NULL;
1790    work = OPENSSL_strdup(cp);
1791    if (work == NULL)
1792        goto err;
1793
1794    while (*cp) {
1795        char *bp = work;
1796        char *typestr = bp;
1797        unsigned char *valstr;
1798        int nid;
1799        int ismulti = nextismulti;
1800        nextismulti = 0;
1801
1802        /* Collect the type */
1803        while (*cp && *cp != '=')
1804            *bp++ = *cp++;
1805        if (*cp == '\0') {
1806            BIO_printf(bio_err,
1807                    "%s: Hit end of string before finding the equals.\n",
1808                    opt_getprog());
1809            goto err;
1810        }
1811        *bp++ = '\0';
1812        ++cp;
1813
1814        /* Collect the value. */
1815        valstr = (unsigned char *)bp;
1816        for (; *cp && *cp != '/'; *bp++ = *cp++) {
1817            if (canmulti && *cp == '+') {
1818                nextismulti = 1;
1819                break;
1820            }
1821            if (*cp == '\\' && *++cp == '\0') {
1822                BIO_printf(bio_err,
1823                        "%s: escape character at end of string\n",
1824                        opt_getprog());
1825                goto err;
1826            }
1827        }
1828        *bp++ = '\0';
1829
1830        /* If not at EOS (must be + or /), move forward. */
1831        if (*cp)
1832            ++cp;
1833
1834        /* Parse */
1835        nid = OBJ_txt2nid(typestr);
1836        if (nid == NID_undef) {
1837            BIO_printf(bio_err, "%s: Skipping unknown attribute \"%s\"\n",
1838                      opt_getprog(), typestr);
1839            continue;
1840        }
1841        if (*valstr == '\0') {
1842            BIO_printf(bio_err,
1843                       "%s: No value provided for Subject Attribute %s, skipped\n",
1844                       opt_getprog(), typestr);
1845            continue;
1846        }
1847        if (!X509_NAME_add_entry_by_NID(n, nid, chtype,
1848                                        valstr, strlen((char *)valstr),
1849                                        -1, ismulti ? -1 : 0))
1850            goto err;
1851    }
1852
1853    OPENSSL_free(work);
1854    return n;
1855
1856 err:
1857    X509_NAME_free(n);
1858    OPENSSL_free(work);
1859    return NULL;
1860}
1861
1862/*
1863 * Read whole contents of a BIO into an allocated memory buffer and return
1864 * it.
1865 */
1866
1867int bio_to_mem(unsigned char **out, int maxlen, BIO *in)
1868{
1869    BIO *mem;
1870    int len, ret;
1871    unsigned char tbuf[1024];
1872
1873    mem = BIO_new(BIO_s_mem());
1874    if (mem == NULL)
1875        return -1;
1876    for (;;) {
1877        if ((maxlen != -1) && maxlen < 1024)
1878            len = maxlen;
1879        else
1880            len = 1024;
1881        len = BIO_read(in, tbuf, len);
1882        if (len < 0) {
1883            BIO_free(mem);
1884            return -1;
1885        }
1886        if (len == 0)
1887            break;
1888        if (BIO_write(mem, tbuf, len) != len) {
1889            BIO_free(mem);
1890            return -1;
1891        }
1892        maxlen -= len;
1893
1894        if (maxlen == 0)
1895            break;
1896    }
1897    ret = BIO_get_mem_data(mem, (char **)out);
1898    BIO_set_flags(mem, BIO_FLAGS_MEM_RDONLY);
1899    BIO_free(mem);
1900    return ret;
1901}
1902
1903int pkey_ctrl_string(EVP_PKEY_CTX *ctx, const char *value)
1904{
1905    int rv;
1906    char *stmp, *vtmp = NULL;
1907    stmp = OPENSSL_strdup(value);
1908    if (!stmp)
1909        return -1;
1910    vtmp = strchr(stmp, ':');
1911    if (vtmp) {
1912        *vtmp = 0;
1913        vtmp++;
1914    }
1915    rv = EVP_PKEY_CTX_ctrl_str(ctx, stmp, vtmp);
1916    OPENSSL_free(stmp);
1917    return rv;
1918}
1919
1920static void nodes_print(const char *name, STACK_OF(X509_POLICY_NODE) *nodes)
1921{
1922    X509_POLICY_NODE *node;
1923    int i;
1924
1925    BIO_printf(bio_err, "%s Policies:", name);
1926    if (nodes) {
1927        BIO_puts(bio_err, "\n");
1928        for (i = 0; i < sk_X509_POLICY_NODE_num(nodes); i++) {
1929            node = sk_X509_POLICY_NODE_value(nodes, i);
1930            X509_POLICY_NODE_print(bio_err, node, 2);
1931        }
1932    } else {
1933        BIO_puts(bio_err, " <empty>\n");
1934    }
1935}
1936
1937void policies_print(X509_STORE_CTX *ctx)
1938{
1939    X509_POLICY_TREE *tree;
1940    int explicit_policy;
1941    tree = X509_STORE_CTX_get0_policy_tree(ctx);
1942    explicit_policy = X509_STORE_CTX_get_explicit_policy(ctx);
1943
1944    BIO_printf(bio_err, "Require explicit Policy: %s\n",
1945               explicit_policy ? "True" : "False");
1946
1947    nodes_print("Authority", X509_policy_tree_get0_policies(tree));
1948    nodes_print("User", X509_policy_tree_get0_user_policies(tree));
1949}
1950
1951/*-
1952 * next_protos_parse parses a comma separated list of strings into a string
1953 * in a format suitable for passing to SSL_CTX_set_next_protos_advertised.
1954 *   outlen: (output) set to the length of the resulting buffer on success.
1955 *   err: (maybe NULL) on failure, an error message line is written to this BIO.
1956 *   in: a NUL terminated string like "abc,def,ghi"
1957 *
1958 *   returns: a malloc'd buffer or NULL on failure.
1959 */
1960unsigned char *next_protos_parse(size_t *outlen, const char *in)
1961{
1962    size_t len;
1963    unsigned char *out;
1964    size_t i, start = 0;
1965    size_t skipped = 0;
1966
1967    len = strlen(in);
1968    if (len == 0 || len >= 65535)
1969        return NULL;
1970
1971    out = app_malloc(len + 1, "NPN buffer");
1972    for (i = 0; i <= len; ++i) {
1973        if (i == len || in[i] == ',') {
1974            /*
1975             * Zero-length ALPN elements are invalid on the wire, we could be
1976             * strict and reject the entire string, but just ignoring extra
1977             * commas seems harmless and more friendly.
1978             *
1979             * Every comma we skip in this way puts the input buffer another
1980             * byte ahead of the output buffer, so all stores into the output
1981             * buffer need to be decremented by the number commas skipped.
1982             */
1983            if (i == start) {
1984                ++start;
1985                ++skipped;
1986                continue;
1987            }
1988            if (i - start > 255) {
1989                OPENSSL_free(out);
1990                return NULL;
1991            }
1992            out[start-skipped] = (unsigned char)(i - start);
1993            start = i + 1;
1994        } else {
1995            out[i + 1 - skipped] = in[i];
1996        }
1997    }
1998
1999    if (len <= skipped) {
2000        OPENSSL_free(out);
2001        return NULL;
2002    }
2003
2004    *outlen = len + 1 - skipped;
2005    return out;
2006}
2007
2008void print_cert_checks(BIO *bio, X509 *x,
2009                       const char *checkhost,
2010                       const char *checkemail, const char *checkip)
2011{
2012    if (x == NULL)
2013        return;
2014    if (checkhost) {
2015        BIO_printf(bio, "Hostname %s does%s match certificate\n",
2016                   checkhost,
2017                   X509_check_host(x, checkhost, 0, 0, NULL) == 1
2018                       ? "" : " NOT");
2019    }
2020
2021    if (checkemail) {
2022        BIO_printf(bio, "Email %s does%s match certificate\n",
2023                   checkemail, X509_check_email(x, checkemail, 0, 0)
2024                   ? "" : " NOT");
2025    }
2026
2027    if (checkip) {
2028        BIO_printf(bio, "IP %s does%s match certificate\n",
2029                   checkip, X509_check_ip_asc(x, checkip, 0) ? "" : " NOT");
2030    }
2031}
2032
2033/* Get first http URL from a DIST_POINT structure */
2034
2035static const char *get_dp_url(DIST_POINT *dp)
2036{
2037    GENERAL_NAMES *gens;
2038    GENERAL_NAME *gen;
2039    int i, gtype;
2040    ASN1_STRING *uri;
2041    if (!dp->distpoint || dp->distpoint->type != 0)
2042        return NULL;
2043    gens = dp->distpoint->name.fullname;
2044    for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
2045        gen = sk_GENERAL_NAME_value(gens, i);
2046        uri = GENERAL_NAME_get0_value(gen, &gtype);
2047        if (gtype == GEN_URI && ASN1_STRING_length(uri) > 6) {
2048            const char *uptr = (const char *)ASN1_STRING_get0_data(uri);
2049            if (strncmp(uptr, "http://", 7) == 0)
2050                return uptr;
2051        }
2052    }
2053    return NULL;
2054}
2055
2056/*
2057 * Look through a CRLDP structure and attempt to find an http URL to
2058 * downloads a CRL from.
2059 */
2060
2061static X509_CRL *load_crl_crldp(STACK_OF(DIST_POINT) *crldp)
2062{
2063    int i;
2064    const char *urlptr = NULL;
2065    for (i = 0; i < sk_DIST_POINT_num(crldp); i++) {
2066        DIST_POINT *dp = sk_DIST_POINT_value(crldp, i);
2067        urlptr = get_dp_url(dp);
2068        if (urlptr)
2069            return load_crl(urlptr, FORMAT_HTTP);
2070    }
2071    return NULL;
2072}
2073
2074/*
2075 * Example of downloading CRLs from CRLDP: not usable for real world as it
2076 * always downloads, doesn't support non-blocking I/O and doesn't cache
2077 * anything.
2078 */
2079
2080static STACK_OF(X509_CRL) *crls_http_cb(X509_STORE_CTX *ctx, X509_NAME *nm)
2081{
2082    X509 *x;
2083    STACK_OF(X509_CRL) *crls = NULL;
2084    X509_CRL *crl;
2085    STACK_OF(DIST_POINT) *crldp;
2086
2087    crls = sk_X509_CRL_new_null();
2088    if (!crls)
2089        return NULL;
2090    x = X509_STORE_CTX_get_current_cert(ctx);
2091    crldp = X509_get_ext_d2i(x, NID_crl_distribution_points, NULL, NULL);
2092    crl = load_crl_crldp(crldp);
2093    sk_DIST_POINT_pop_free(crldp, DIST_POINT_free);
2094    if (!crl) {
2095        sk_X509_CRL_free(crls);
2096        return NULL;
2097    }
2098    sk_X509_CRL_push(crls, crl);
2099    /* Try to download delta CRL */
2100    crldp = X509_get_ext_d2i(x, NID_freshest_crl, NULL, NULL);
2101    crl = load_crl_crldp(crldp);
2102    sk_DIST_POINT_pop_free(crldp, DIST_POINT_free);
2103    if (crl)
2104        sk_X509_CRL_push(crls, crl);
2105    return crls;
2106}
2107
2108void store_setup_crl_download(X509_STORE *st)
2109{
2110    X509_STORE_set_lookup_crls_cb(st, crls_http_cb);
2111}
2112
2113/*
2114 * Platform-specific sections
2115 */
2116#if defined(_WIN32)
2117# ifdef fileno
2118#  undef fileno
2119#  define fileno(a) (int)_fileno(a)
2120# endif
2121
2122# include <windows.h>
2123# include <tchar.h>
2124
2125static int WIN32_rename(const char *from, const char *to)
2126{
2127    TCHAR *tfrom = NULL, *tto;
2128    DWORD err;
2129    int ret = 0;
2130
2131    if (sizeof(TCHAR) == 1) {
2132        tfrom = (TCHAR *)from;
2133        tto = (TCHAR *)to;
2134    } else {                    /* UNICODE path */
2135
2136        size_t i, flen = strlen(from) + 1, tlen = strlen(to) + 1;
2137        tfrom = malloc(sizeof(*tfrom) * (flen + tlen));
2138        if (tfrom == NULL)
2139            goto err;
2140        tto = tfrom + flen;
2141# if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2142        if (!MultiByteToWideChar(CP_ACP, 0, from, flen, (WCHAR *)tfrom, flen))
2143# endif
2144            for (i = 0; i < flen; i++)
2145                tfrom[i] = (TCHAR)from[i];
2146# if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2147        if (!MultiByteToWideChar(CP_ACP, 0, to, tlen, (WCHAR *)tto, tlen))
2148# endif
2149            for (i = 0; i < tlen; i++)
2150                tto[i] = (TCHAR)to[i];
2151    }
2152
2153    if (MoveFile(tfrom, tto))
2154        goto ok;
2155    err = GetLastError();
2156    if (err == ERROR_ALREADY_EXISTS || err == ERROR_FILE_EXISTS) {
2157        if (DeleteFile(tto) && MoveFile(tfrom, tto))
2158            goto ok;
2159        err = GetLastError();
2160    }
2161    if (err == ERROR_FILE_NOT_FOUND || err == ERROR_PATH_NOT_FOUND)
2162        errno = ENOENT;
2163    else if (err == ERROR_ACCESS_DENIED)
2164        errno = EACCES;
2165    else
2166        errno = EINVAL;         /* we could map more codes... */
2167 err:
2168    ret = -1;
2169 ok:
2170    if (tfrom != NULL && tfrom != (TCHAR *)from)
2171        free(tfrom);
2172    return ret;
2173}
2174#endif
2175
2176/* app_tminterval section */
2177#if defined(_WIN32)
2178double app_tminterval(int stop, int usertime)
2179{
2180    FILETIME now;
2181    double ret = 0;
2182    static ULARGE_INTEGER tmstart;
2183    static int warning = 1;
2184# ifdef _WIN32_WINNT
2185    static HANDLE proc = NULL;
2186
2187    if (proc == NULL) {
2188        if (check_winnt())
2189            proc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE,
2190                               GetCurrentProcessId());
2191        if (proc == NULL)
2192            proc = (HANDLE) - 1;
2193    }
2194
2195    if (usertime && proc != (HANDLE) - 1) {
2196        FILETIME junk;
2197        GetProcessTimes(proc, &junk, &junk, &junk, &now);
2198    } else
2199# endif
2200    {
2201        SYSTEMTIME systime;
2202
2203        if (usertime && warning) {
2204            BIO_printf(bio_err, "To get meaningful results, run "
2205                       "this program on idle system.\n");
2206            warning = 0;
2207        }
2208        GetSystemTime(&systime);
2209        SystemTimeToFileTime(&systime, &now);
2210    }
2211
2212    if (stop == TM_START) {
2213        tmstart.u.LowPart = now.dwLowDateTime;
2214        tmstart.u.HighPart = now.dwHighDateTime;
2215    } else {
2216        ULARGE_INTEGER tmstop;
2217
2218        tmstop.u.LowPart = now.dwLowDateTime;
2219        tmstop.u.HighPart = now.dwHighDateTime;
2220
2221        ret = (__int64)(tmstop.QuadPart - tmstart.QuadPart) * 1e-7;
2222    }
2223
2224    return ret;
2225}
2226#elif defined(OPENSSL_SYS_VXWORKS)
2227# include <time.h>
2228
2229double app_tminterval(int stop, int usertime)
2230{
2231    double ret = 0;
2232# ifdef CLOCK_REALTIME
2233    static struct timespec tmstart;
2234    struct timespec now;
2235# else
2236    static unsigned long tmstart;
2237    unsigned long now;
2238# endif
2239    static int warning = 1;
2240
2241    if (usertime && warning) {
2242        BIO_printf(bio_err, "To get meaningful results, run "
2243                   "this program on idle system.\n");
2244        warning = 0;
2245    }
2246# ifdef CLOCK_REALTIME
2247    clock_gettime(CLOCK_REALTIME, &now);
2248    if (stop == TM_START)
2249        tmstart = now;
2250    else
2251        ret = ((now.tv_sec + now.tv_nsec * 1e-9)
2252               - (tmstart.tv_sec + tmstart.tv_nsec * 1e-9));
2253# else
2254    now = tickGet();
2255    if (stop == TM_START)
2256        tmstart = now;
2257    else
2258        ret = (now - tmstart) / (double)sysClkRateGet();
2259# endif
2260    return ret;
2261}
2262
2263#elif defined(OPENSSL_SYSTEM_VMS)
2264# include <time.h>
2265# include <times.h>
2266
2267double app_tminterval(int stop, int usertime)
2268{
2269    static clock_t tmstart;
2270    double ret = 0;
2271    clock_t now;
2272# ifdef __TMS
2273    struct tms rus;
2274
2275    now = times(&rus);
2276    if (usertime)
2277        now = rus.tms_utime;
2278# else
2279    if (usertime)
2280        now = clock();          /* sum of user and kernel times */
2281    else {
2282        struct timeval tv;
2283        gettimeofday(&tv, NULL);
2284        now = (clock_t)((unsigned long long)tv.tv_sec * CLK_TCK +
2285                        (unsigned long long)tv.tv_usec * (1000000 / CLK_TCK)
2286            );
2287    }
2288# endif
2289    if (stop == TM_START)
2290        tmstart = now;
2291    else
2292        ret = (now - tmstart) / (double)(CLK_TCK);
2293
2294    return ret;
2295}
2296
2297#elif defined(_SC_CLK_TCK)      /* by means of unistd.h */
2298# include <sys/times.h>
2299
2300double app_tminterval(int stop, int usertime)
2301{
2302    double ret = 0;
2303    struct tms rus;
2304    clock_t now = times(&rus);
2305    static clock_t tmstart;
2306
2307    if (usertime)
2308        now = rus.tms_utime;
2309
2310    if (stop == TM_START) {
2311        tmstart = now;
2312    } else {
2313        long int tck = sysconf(_SC_CLK_TCK);
2314        ret = (now - tmstart) / (double)tck;
2315    }
2316
2317    return ret;
2318}
2319
2320#else
2321# include <sys/time.h>
2322# include <sys/resource.h>
2323
2324double app_tminterval(int stop, int usertime)
2325{
2326    double ret = 0;
2327    struct rusage rus;
2328    struct timeval now;
2329    static struct timeval tmstart;
2330
2331    if (usertime)
2332        getrusage(RUSAGE_SELF, &rus), now = rus.ru_utime;
2333    else
2334        gettimeofday(&now, NULL);
2335
2336    if (stop == TM_START)
2337        tmstart = now;
2338    else
2339        ret = ((now.tv_sec + now.tv_usec * 1e-6)
2340               - (tmstart.tv_sec + tmstart.tv_usec * 1e-6));
2341
2342    return ret;
2343}
2344#endif
2345
2346int app_access(const char* name, int flag)
2347{
2348#ifdef _WIN32
2349    return _access(name, flag);
2350#else
2351    return access(name, flag);
2352#endif
2353}
2354
2355/* app_isdir section */
2356#ifdef _WIN32
2357int app_isdir(const char *name)
2358{
2359    DWORD attr;
2360# if defined(UNICODE) || defined(_UNICODE)
2361    size_t i, len_0 = strlen(name) + 1;
2362    WCHAR tempname[MAX_PATH];
2363
2364    if (len_0 > MAX_PATH)
2365        return -1;
2366
2367#  if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2368    if (!MultiByteToWideChar(CP_ACP, 0, name, len_0, tempname, MAX_PATH))
2369#  endif
2370        for (i = 0; i < len_0; i++)
2371            tempname[i] = (WCHAR)name[i];
2372
2373    attr = GetFileAttributes(tempname);
2374# else
2375    attr = GetFileAttributes(name);
2376# endif
2377    if (attr == INVALID_FILE_ATTRIBUTES)
2378        return -1;
2379    return ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0);
2380}
2381#else
2382# include <sys/stat.h>
2383# ifndef S_ISDIR
2384#  if defined(_S_IFMT) && defined(_S_IFDIR)
2385#   define S_ISDIR(a)   (((a) & _S_IFMT) == _S_IFDIR)
2386#  else
2387#   define S_ISDIR(a)   (((a) & S_IFMT) == S_IFDIR)
2388#  endif
2389# endif
2390
2391int app_isdir(const char *name)
2392{
2393# if defined(S_ISDIR)
2394    struct stat st;
2395
2396    if (stat(name, &st) == 0)
2397        return S_ISDIR(st.st_mode);
2398    else
2399        return -1;
2400# else
2401    return -1;
2402# endif
2403}
2404#endif
2405
2406/* raw_read|write section */
2407#if defined(__VMS)
2408# include "vms_term_sock.h"
2409static int stdin_sock = -1;
2410
2411static void close_stdin_sock(void)
2412{
2413    TerminalSocket (TERM_SOCK_DELETE, &stdin_sock);
2414}
2415
2416int fileno_stdin(void)
2417{
2418    if (stdin_sock == -1) {
2419        TerminalSocket(TERM_SOCK_CREATE, &stdin_sock);
2420        atexit(close_stdin_sock);
2421    }
2422
2423    return stdin_sock;
2424}
2425#else
2426int fileno_stdin(void)
2427{
2428    return fileno(stdin);
2429}
2430#endif
2431
2432int fileno_stdout(void)
2433{
2434    return fileno(stdout);
2435}
2436
2437#if defined(_WIN32) && defined(STD_INPUT_HANDLE)
2438int raw_read_stdin(void *buf, int siz)
2439{
2440    DWORD n;
2441    if (ReadFile(GetStdHandle(STD_INPUT_HANDLE), buf, siz, &n, NULL))
2442        return n;
2443    else
2444        return -1;
2445}
2446#elif defined(__VMS)
2447# include <sys/socket.h>
2448
2449int raw_read_stdin(void *buf, int siz)
2450{
2451    return recv(fileno_stdin(), buf, siz, 0);
2452}
2453#else
2454int raw_read_stdin(void *buf, int siz)
2455{
2456    return read(fileno_stdin(), buf, siz);
2457}
2458#endif
2459
2460#if defined(_WIN32) && defined(STD_OUTPUT_HANDLE)
2461int raw_write_stdout(const void *buf, int siz)
2462{
2463    DWORD n;
2464    if (WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), buf, siz, &n, NULL))
2465        return n;
2466    else
2467        return -1;
2468}
2469#else
2470int raw_write_stdout(const void *buf, int siz)
2471{
2472    return write(fileno_stdout(), buf, siz);
2473}
2474#endif
2475
2476/*
2477 * Centralized handling if input and output files with format specification
2478 * The format is meant to show what the input and output is supposed to be,
2479 * and is therefore a show of intent more than anything else.  However, it
2480 * does impact behavior on some platform, such as differentiating between
2481 * text and binary input/output on non-Unix platforms
2482 */
2483static int istext(int format)
2484{
2485    return (format & B_FORMAT_TEXT) == B_FORMAT_TEXT;
2486}
2487
2488BIO *dup_bio_in(int format)
2489{
2490    return BIO_new_fp(stdin,
2491                      BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2492}
2493
2494static BIO_METHOD *prefix_method = NULL;
2495
2496BIO *dup_bio_out(int format)
2497{
2498    BIO *b = BIO_new_fp(stdout,
2499                        BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2500    void *prefix = NULL;
2501
2502#ifdef OPENSSL_SYS_VMS
2503    if (istext(format))
2504        b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
2505#endif
2506
2507    if (istext(format) && (prefix = getenv("HARNESS_OSSL_PREFIX")) != NULL) {
2508        if (prefix_method == NULL)
2509            prefix_method = apps_bf_prefix();
2510        b = BIO_push(BIO_new(prefix_method), b);
2511        BIO_ctrl(b, PREFIX_CTRL_SET_PREFIX, 0, prefix);
2512    }
2513
2514    return b;
2515}
2516
2517BIO *dup_bio_err(int format)
2518{
2519    BIO *b = BIO_new_fp(stderr,
2520                        BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2521#ifdef OPENSSL_SYS_VMS
2522    if (istext(format))
2523        b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
2524#endif
2525    return b;
2526}
2527
2528void destroy_prefix_method(void)
2529{
2530    BIO_meth_free(prefix_method);
2531    prefix_method = NULL;
2532}
2533
2534void unbuffer(FILE *fp)
2535{
2536/*
2537 * On VMS, setbuf() will only take 32-bit pointers, and a compilation
2538 * with /POINTER_SIZE=64 will give off a MAYLOSEDATA2 warning here.
2539 * However, we trust that the C RTL will never give us a FILE pointer
2540 * above the first 4 GB of memory, so we simply turn off the warning
2541 * temporarily.
2542 */
2543#if defined(OPENSSL_SYS_VMS) && defined(__DECC)
2544# pragma environment save
2545# pragma message disable maylosedata2
2546#endif
2547    setbuf(fp, NULL);
2548#if defined(OPENSSL_SYS_VMS) && defined(__DECC)
2549# pragma environment restore
2550#endif
2551}
2552
2553static const char *modestr(char mode, int format)
2554{
2555    OPENSSL_assert(mode == 'a' || mode == 'r' || mode == 'w');
2556
2557    switch (mode) {
2558    case 'a':
2559        return istext(format) ? "a" : "ab";
2560    case 'r':
2561        return istext(format) ? "r" : "rb";
2562    case 'w':
2563        return istext(format) ? "w" : "wb";
2564    }
2565    /* The assert above should make sure we never reach this point */
2566    return NULL;
2567}
2568
2569static const char *modeverb(char mode)
2570{
2571    switch (mode) {
2572    case 'a':
2573        return "appending";
2574    case 'r':
2575        return "reading";
2576    case 'w':
2577        return "writing";
2578    }
2579    return "(doing something)";
2580}
2581
2582/*
2583 * Open a file for writing, owner-read-only.
2584 */
2585BIO *bio_open_owner(const char *filename, int format, int private)
2586{
2587    FILE *fp = NULL;
2588    BIO *b = NULL;
2589    int fd = -1, bflags, mode, textmode;
2590
2591    if (!private || filename == NULL || strcmp(filename, "-") == 0)
2592        return bio_open_default(filename, 'w', format);
2593
2594    mode = O_WRONLY;
2595#ifdef O_CREAT
2596    mode |= O_CREAT;
2597#endif
2598#ifdef O_TRUNC
2599    mode |= O_TRUNC;
2600#endif
2601    textmode = istext(format);
2602    if (!textmode) {
2603#ifdef O_BINARY
2604        mode |= O_BINARY;
2605#elif defined(_O_BINARY)
2606        mode |= _O_BINARY;
2607#endif
2608    }
2609
2610#ifdef OPENSSL_SYS_VMS
2611    /* VMS doesn't have O_BINARY, it just doesn't make sense.  But,
2612     * it still needs to know that we're going binary, or fdopen()
2613     * will fail with "invalid argument"...  so we tell VMS what the
2614     * context is.
2615     */
2616    if (!textmode)
2617        fd = open(filename, mode, 0600, "ctx=bin");
2618    else
2619#endif
2620        fd = open(filename, mode, 0600);
2621    if (fd < 0)
2622        goto err;
2623    fp = fdopen(fd, modestr('w', format));
2624    if (fp == NULL)
2625        goto err;
2626    bflags = BIO_CLOSE;
2627    if (textmode)
2628        bflags |= BIO_FP_TEXT;
2629    b = BIO_new_fp(fp, bflags);
2630    if (b)
2631        return b;
2632
2633 err:
2634    BIO_printf(bio_err, "%s: Can't open \"%s\" for writing, %s\n",
2635               opt_getprog(), filename, strerror(errno));
2636    ERR_print_errors(bio_err);
2637    /* If we have fp, then fdopen took over fd, so don't close both. */
2638    if (fp)
2639        fclose(fp);
2640    else if (fd >= 0)
2641        close(fd);
2642    return NULL;
2643}
2644
2645static BIO *bio_open_default_(const char *filename, char mode, int format,
2646                              int quiet)
2647{
2648    BIO *ret;
2649
2650    if (filename == NULL || strcmp(filename, "-") == 0) {
2651        ret = mode == 'r' ? dup_bio_in(format) : dup_bio_out(format);
2652        if (quiet) {
2653            ERR_clear_error();
2654            return ret;
2655        }
2656        if (ret != NULL)
2657            return ret;
2658        BIO_printf(bio_err,
2659                   "Can't open %s, %s\n",
2660                   mode == 'r' ? "stdin" : "stdout", strerror(errno));
2661    } else {
2662        ret = BIO_new_file(filename, modestr(mode, format));
2663        if (quiet) {
2664            ERR_clear_error();
2665            return ret;
2666        }
2667        if (ret != NULL)
2668            return ret;
2669        BIO_printf(bio_err,
2670                   "Can't open %s for %s, %s\n",
2671                   filename, modeverb(mode), strerror(errno));
2672    }
2673    ERR_print_errors(bio_err);
2674    return NULL;
2675}
2676
2677BIO *bio_open_default(const char *filename, char mode, int format)
2678{
2679    return bio_open_default_(filename, mode, format, 0);
2680}
2681
2682BIO *bio_open_default_quiet(const char *filename, char mode, int format)
2683{
2684    return bio_open_default_(filename, mode, format, 1);
2685}
2686
2687void wait_for_async(SSL *s)
2688{
2689    /* On Windows select only works for sockets, so we simply don't wait  */
2690#ifndef OPENSSL_SYS_WINDOWS
2691    int width = 0;
2692    fd_set asyncfds;
2693    OSSL_ASYNC_FD *fds;
2694    size_t numfds;
2695    size_t i;
2696
2697    if (!SSL_get_all_async_fds(s, NULL, &numfds))
2698        return;
2699    if (numfds == 0)
2700        return;
2701    fds = app_malloc(sizeof(OSSL_ASYNC_FD) * numfds, "allocate async fds");
2702    if (!SSL_get_all_async_fds(s, fds, &numfds)) {
2703        OPENSSL_free(fds);
2704        return;
2705    }
2706
2707    FD_ZERO(&asyncfds);
2708    for (i = 0; i < numfds; i++) {
2709        if (width <= (int)fds[i])
2710            width = (int)fds[i] + 1;
2711        openssl_fdset((int)fds[i], &asyncfds);
2712    }
2713    select(width, (void *)&asyncfds, NULL, NULL, NULL);
2714    OPENSSL_free(fds);
2715#endif
2716}
2717
2718/* if OPENSSL_SYS_WINDOWS is defined then so is OPENSSL_SYS_MSDOS */
2719#if defined(OPENSSL_SYS_MSDOS)
2720int has_stdin_waiting(void)
2721{
2722# if defined(OPENSSL_SYS_WINDOWS)
2723    HANDLE inhand = GetStdHandle(STD_INPUT_HANDLE);
2724    DWORD events = 0;
2725    INPUT_RECORD inputrec;
2726    DWORD insize = 1;
2727    BOOL peeked;
2728
2729    if (inhand == INVALID_HANDLE_VALUE) {
2730        return 0;
2731    }
2732
2733    peeked = PeekConsoleInput(inhand, &inputrec, insize, &events);
2734    if (!peeked) {
2735        /* Probably redirected input? _kbhit() does not work in this case */
2736        if (!feof(stdin)) {
2737            return 1;
2738        }
2739        return 0;
2740    }
2741# endif
2742    return _kbhit();
2743}
2744#endif
2745
2746/* Corrupt a signature by modifying final byte */
2747void corrupt_signature(const ASN1_STRING *signature)
2748{
2749        unsigned char *s = signature->data;
2750        s[signature->length - 1] ^= 0x1;
2751}
2752
2753int set_cert_times(X509 *x, const char *startdate, const char *enddate,
2754                   int days)
2755{
2756    if (startdate == NULL || strcmp(startdate, "today") == 0) {
2757        if (X509_gmtime_adj(X509_getm_notBefore(x), 0) == NULL)
2758            return 0;
2759    } else {
2760        if (!ASN1_TIME_set_string_X509(X509_getm_notBefore(x), startdate))
2761            return 0;
2762    }
2763    if (enddate == NULL) {
2764        if (X509_time_adj_ex(X509_getm_notAfter(x), days, 0, NULL)
2765            == NULL)
2766            return 0;
2767    } else if (!ASN1_TIME_set_string_X509(X509_getm_notAfter(x), enddate)) {
2768        return 0;
2769    }
2770    return 1;
2771}
2772
2773void make_uppercase(char *string)
2774{
2775    int i;
2776
2777    for (i = 0; string[i] != '\0'; i++)
2778        string[i] = toupper((unsigned char)string[i]);
2779}
2780