1/*
2 * Copyright 1995-2022 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        int pw_min_len = PW_MIN_LENGTH;
304
305        if (cb_data != NULL && cb_data->prompt_info != NULL)
306            prompt_info = cb_data->prompt_info;
307        if (cb_data != NULL && cb_data->password != NULL
308                && *(const char*)cb_data->password != '\0')
309            pw_min_len = 1;
310        else if (!verify)
311            pw_min_len = 0;
312        prompt = UI_construct_prompt(ui, "pass phrase", prompt_info);
313        if (!prompt) {
314            BIO_printf(bio_err, "Out of memory\n");
315            UI_free(ui);
316            return 0;
317        }
318
319        ui_flags |= UI_INPUT_FLAG_DEFAULT_PWD;
320        UI_ctrl(ui, UI_CTRL_PRINT_ERRORS, 1, 0, 0);
321
322        /* We know that there is no previous user data to return to us */
323        (void)UI_add_user_data(ui, cb_data);
324
325        ok = UI_add_input_string(ui, prompt, ui_flags, buf,
326                                 pw_min_len, bufsiz - 1);
327
328        if (ok >= 0 && verify) {
329            buff = app_malloc(bufsiz, "password buffer");
330            ok = UI_add_verify_string(ui, prompt, ui_flags, buff,
331                                      pw_min_len, bufsiz - 1, buf);
332        }
333        if (ok >= 0)
334            do {
335                ok = UI_process(ui);
336            } while (ok < 0 && UI_ctrl(ui, UI_CTRL_IS_REDOABLE, 0, 0, 0));
337
338        OPENSSL_clear_free(buff, (unsigned int)bufsiz);
339
340        if (ok >= 0)
341            res = strlen(buf);
342        if (ok == -1) {
343            BIO_printf(bio_err, "User interface error\n");
344            ERR_print_errors(bio_err);
345            OPENSSL_cleanse(buf, (unsigned int)bufsiz);
346            res = 0;
347        }
348        if (ok == -2) {
349            BIO_printf(bio_err, "aborted!\n");
350            OPENSSL_cleanse(buf, (unsigned int)bufsiz);
351            res = 0;
352        }
353        UI_free(ui);
354        OPENSSL_free(prompt);
355    }
356    return res;
357}
358
359static char *app_get_pass(const char *arg, int keepbio);
360
361int app_passwd(const char *arg1, const char *arg2, char **pass1, char **pass2)
362{
363    int same;
364    if (arg2 == NULL || arg1 == NULL || strcmp(arg1, arg2))
365        same = 0;
366    else
367        same = 1;
368    if (arg1 != NULL) {
369        *pass1 = app_get_pass(arg1, same);
370        if (*pass1 == NULL)
371            return 0;
372    } else if (pass1 != NULL) {
373        *pass1 = NULL;
374    }
375    if (arg2 != NULL) {
376        *pass2 = app_get_pass(arg2, same ? 2 : 0);
377        if (*pass2 == NULL)
378            return 0;
379    } else if (pass2 != NULL) {
380        *pass2 = NULL;
381    }
382    return 1;
383}
384
385static char *app_get_pass(const char *arg, int keepbio)
386{
387    char *tmp, tpass[APP_PASS_LEN];
388    static BIO *pwdbio = NULL;
389    int i;
390
391    if (strncmp(arg, "pass:", 5) == 0)
392        return OPENSSL_strdup(arg + 5);
393    if (strncmp(arg, "env:", 4) == 0) {
394        tmp = getenv(arg + 4);
395        if (tmp == NULL) {
396            BIO_printf(bio_err, "Can't read environment variable %s\n", arg + 4);
397            return NULL;
398        }
399        return OPENSSL_strdup(tmp);
400    }
401    if (!keepbio || pwdbio == NULL) {
402        if (strncmp(arg, "file:", 5) == 0) {
403            pwdbio = BIO_new_file(arg + 5, "r");
404            if (pwdbio == NULL) {
405                BIO_printf(bio_err, "Can't open file %s\n", arg + 5);
406                return NULL;
407            }
408#if !defined(_WIN32)
409            /*
410             * Under _WIN32, which covers even Win64 and CE, file
411             * descriptors referenced by BIO_s_fd are not inherited
412             * by child process and therefore below is not an option.
413             * It could have been an option if bss_fd.c was operating
414             * on real Windows descriptors, such as those obtained
415             * with CreateFile.
416             */
417        } else if (strncmp(arg, "fd:", 3) == 0) {
418            BIO *btmp;
419            i = atoi(arg + 3);
420            if (i >= 0)
421                pwdbio = BIO_new_fd(i, BIO_NOCLOSE);
422            if ((i < 0) || !pwdbio) {
423                BIO_printf(bio_err, "Can't access file descriptor %s\n", arg + 3);
424                return NULL;
425            }
426            /*
427             * Can't do BIO_gets on an fd BIO so add a buffering BIO
428             */
429            btmp = BIO_new(BIO_f_buffer());
430            pwdbio = BIO_push(btmp, pwdbio);
431#endif
432        } else if (strcmp(arg, "stdin") == 0) {
433            pwdbio = dup_bio_in(FORMAT_TEXT);
434            if (!pwdbio) {
435                BIO_printf(bio_err, "Can't open BIO for stdin\n");
436                return NULL;
437            }
438        } else {
439            BIO_printf(bio_err, "Invalid password argument \"%s\"\n", arg);
440            return NULL;
441        }
442    }
443    i = BIO_gets(pwdbio, tpass, APP_PASS_LEN);
444    if (keepbio != 1) {
445        BIO_free_all(pwdbio);
446        pwdbio = NULL;
447    }
448    if (i <= 0) {
449        BIO_printf(bio_err, "Error reading password from BIO\n");
450        return NULL;
451    }
452    tmp = strchr(tpass, '\n');
453    if (tmp != NULL)
454        *tmp = 0;
455    return OPENSSL_strdup(tpass);
456}
457
458CONF *app_load_config_bio(BIO *in, const char *filename)
459{
460    long errorline = -1;
461    CONF *conf;
462    int i;
463
464    conf = NCONF_new(NULL);
465    i = NCONF_load_bio(conf, in, &errorline);
466    if (i > 0)
467        return conf;
468
469    if (errorline <= 0) {
470        BIO_printf(bio_err, "%s: Can't load ", opt_getprog());
471    } else {
472        BIO_printf(bio_err, "%s: Error on line %ld of ", opt_getprog(),
473                   errorline);
474    }
475    if (filename != NULL)
476        BIO_printf(bio_err, "config file \"%s\"\n", filename);
477    else
478        BIO_printf(bio_err, "config input");
479
480    NCONF_free(conf);
481    return NULL;
482}
483
484CONF *app_load_config(const char *filename)
485{
486    BIO *in;
487    CONF *conf;
488
489    in = bio_open_default(filename, 'r', FORMAT_TEXT);
490    if (in == NULL)
491        return NULL;
492
493    conf = app_load_config_bio(in, filename);
494    BIO_free(in);
495    return conf;
496}
497
498CONF *app_load_config_quiet(const char *filename)
499{
500    BIO *in;
501    CONF *conf;
502
503    in = bio_open_default_quiet(filename, 'r', FORMAT_TEXT);
504    if (in == NULL)
505        return NULL;
506
507    conf = app_load_config_bio(in, filename);
508    BIO_free(in);
509    return conf;
510}
511
512int app_load_modules(const CONF *config)
513{
514    CONF *to_free = NULL;
515
516    if (config == NULL)
517        config = to_free = app_load_config_quiet(default_config_file);
518    if (config == NULL)
519        return 1;
520
521    if (CONF_modules_load(config, NULL, 0) <= 0) {
522        BIO_printf(bio_err, "Error configuring OpenSSL modules\n");
523        ERR_print_errors(bio_err);
524        NCONF_free(to_free);
525        return 0;
526    }
527    NCONF_free(to_free);
528    return 1;
529}
530
531int add_oid_section(CONF *conf)
532{
533    char *p;
534    STACK_OF(CONF_VALUE) *sktmp;
535    CONF_VALUE *cnf;
536    int i;
537
538    if ((p = NCONF_get_string(conf, NULL, "oid_section")) == NULL) {
539        ERR_clear_error();
540        return 1;
541    }
542    if ((sktmp = NCONF_get_section(conf, p)) == NULL) {
543        BIO_printf(bio_err, "problem loading oid section %s\n", p);
544        return 0;
545    }
546    for (i = 0; i < sk_CONF_VALUE_num(sktmp); i++) {
547        cnf = sk_CONF_VALUE_value(sktmp, i);
548        if (OBJ_create(cnf->value, cnf->name, cnf->name) == NID_undef) {
549            BIO_printf(bio_err, "problem creating object %s=%s\n",
550                       cnf->name, cnf->value);
551            return 0;
552        }
553    }
554    return 1;
555}
556
557static int load_pkcs12(BIO *in, const char *desc,
558                       pem_password_cb *pem_cb, void *cb_data,
559                       EVP_PKEY **pkey, X509 **cert, STACK_OF(X509) **ca)
560{
561    const char *pass;
562    char tpass[PEM_BUFSIZE];
563    int len, ret = 0;
564    PKCS12 *p12;
565    p12 = d2i_PKCS12_bio(in, NULL);
566    if (p12 == NULL) {
567        BIO_printf(bio_err, "Error loading PKCS12 file for %s\n", desc);
568        goto die;
569    }
570    /* See if an empty password will do */
571    if (PKCS12_verify_mac(p12, "", 0) || PKCS12_verify_mac(p12, NULL, 0)) {
572        pass = "";
573    } else {
574        if (!pem_cb)
575            pem_cb = (pem_password_cb *)password_callback;
576        len = pem_cb(tpass, PEM_BUFSIZE, 0, cb_data);
577        if (len < 0) {
578            BIO_printf(bio_err, "Passphrase callback error for %s\n", desc);
579            goto die;
580        }
581        if (len < PEM_BUFSIZE)
582            tpass[len] = 0;
583        if (!PKCS12_verify_mac(p12, tpass, len)) {
584            BIO_printf(bio_err,
585                       "Mac verify error (wrong password?) in PKCS12 file for %s\n",
586                       desc);
587            goto die;
588        }
589        pass = tpass;
590    }
591    ret = PKCS12_parse(p12, pass, pkey, cert, ca);
592 die:
593    PKCS12_free(p12);
594    return ret;
595}
596
597#if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
598static int load_cert_crl_http(const char *url, X509 **pcert, X509_CRL **pcrl)
599{
600    char *host = NULL, *port = NULL, *path = NULL;
601    BIO *bio = NULL;
602    OCSP_REQ_CTX *rctx = NULL;
603    int use_ssl, rv = 0;
604    if (!OCSP_parse_url(url, &host, &port, &path, &use_ssl))
605        goto err;
606    if (use_ssl) {
607        BIO_puts(bio_err, "https not supported\n");
608        goto err;
609    }
610    bio = BIO_new_connect(host);
611    if (!bio || !BIO_set_conn_port(bio, port))
612        goto err;
613    rctx = OCSP_REQ_CTX_new(bio, 1024);
614    if (rctx == NULL)
615        goto err;
616    if (!OCSP_REQ_CTX_http(rctx, "GET", path))
617        goto err;
618    if (!OCSP_REQ_CTX_add1_header(rctx, "Host", host))
619        goto err;
620    if (pcert) {
621        do {
622            rv = X509_http_nbio(rctx, pcert);
623        } while (rv == -1);
624    } else {
625        do {
626            rv = X509_CRL_http_nbio(rctx, pcrl);
627        } while (rv == -1);
628    }
629
630 err:
631    OPENSSL_free(host);
632    OPENSSL_free(path);
633    OPENSSL_free(port);
634    BIO_free_all(bio);
635    OCSP_REQ_CTX_free(rctx);
636    if (rv != 1) {
637        BIO_printf(bio_err, "Error loading %s from %s\n",
638                   pcert ? "certificate" : "CRL", url);
639        ERR_print_errors(bio_err);
640    }
641    return rv;
642}
643#endif
644
645X509 *load_cert(const char *file, int format, const char *cert_descrip)
646{
647    X509 *x = NULL;
648    BIO *cert;
649
650    if (format == FORMAT_HTTP) {
651#if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
652        load_cert_crl_http(file, &x, NULL);
653#endif
654        return x;
655    }
656
657    if (file == NULL) {
658        unbuffer(stdin);
659        cert = dup_bio_in(format);
660    } else {
661        cert = bio_open_default(file, 'r', format);
662    }
663    if (cert == NULL)
664        goto end;
665
666    if (format == FORMAT_ASN1) {
667        x = d2i_X509_bio(cert, NULL);
668    } else if (format == FORMAT_PEM) {
669        x = PEM_read_bio_X509_AUX(cert, NULL,
670                                  (pem_password_cb *)password_callback, NULL);
671    } else if (format == FORMAT_PKCS12) {
672        if (!load_pkcs12(cert, cert_descrip, NULL, NULL, NULL, &x, NULL))
673            goto end;
674    } else {
675        BIO_printf(bio_err, "bad input format specified for %s\n", cert_descrip);
676        goto end;
677    }
678 end:
679    if (x == NULL) {
680        BIO_printf(bio_err, "unable to load certificate\n");
681        ERR_print_errors(bio_err);
682    }
683    BIO_free(cert);
684    return x;
685}
686
687X509_CRL *load_crl(const char *infile, int format)
688{
689    X509_CRL *x = NULL;
690    BIO *in = NULL;
691
692    if (format == FORMAT_HTTP) {
693#if !defined(OPENSSL_NO_OCSP) && !defined(OPENSSL_NO_SOCK)
694        load_cert_crl_http(infile, NULL, &x);
695#endif
696        return x;
697    }
698
699    in = bio_open_default(infile, 'r', format);
700    if (in == NULL)
701        goto end;
702    if (format == FORMAT_ASN1) {
703        x = d2i_X509_CRL_bio(in, NULL);
704    } else if (format == FORMAT_PEM) {
705        x = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
706    } else {
707        BIO_printf(bio_err, "bad input format specified for input crl\n");
708        goto end;
709    }
710    if (x == NULL) {
711        BIO_printf(bio_err, "unable to load CRL\n");
712        ERR_print_errors(bio_err);
713        goto end;
714    }
715
716 end:
717    BIO_free(in);
718    return x;
719}
720
721EVP_PKEY *load_key(const char *file, int format, int maybe_stdin,
722                   const char *pass, ENGINE *e, const char *key_descrip)
723{
724    BIO *key = NULL;
725    EVP_PKEY *pkey = NULL;
726    PW_CB_DATA cb_data;
727
728    cb_data.password = pass;
729    cb_data.prompt_info = file;
730
731    if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE)) {
732        BIO_printf(bio_err, "no keyfile specified\n");
733        goto end;
734    }
735    if (format == FORMAT_ENGINE) {
736        if (e == NULL) {
737            BIO_printf(bio_err, "no engine specified\n");
738        } else {
739#ifndef OPENSSL_NO_ENGINE
740            if (ENGINE_init(e)) {
741                pkey = ENGINE_load_private_key(e, file, ui_method, &cb_data);
742                ENGINE_finish(e);
743            }
744            if (pkey == NULL) {
745                BIO_printf(bio_err, "cannot load %s from engine\n", key_descrip);
746                ERR_print_errors(bio_err);
747            }
748#else
749            BIO_printf(bio_err, "engines not supported\n");
750#endif
751        }
752        goto end;
753    }
754    if (file == NULL && maybe_stdin) {
755        unbuffer(stdin);
756        key = dup_bio_in(format);
757    } else {
758        key = bio_open_default(file, 'r', format);
759    }
760    if (key == NULL)
761        goto end;
762    if (format == FORMAT_ASN1) {
763        pkey = d2i_PrivateKey_bio(key, NULL);
764    } else if (format == FORMAT_PEM) {
765        pkey = PEM_read_bio_PrivateKey(key, NULL,
766                                       (pem_password_cb *)password_callback,
767                                       &cb_data);
768    } else if (format == FORMAT_PKCS12) {
769        if (!load_pkcs12(key, key_descrip,
770                         (pem_password_cb *)password_callback, &cb_data,
771                         &pkey, NULL, NULL))
772            goto end;
773#if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA) && !defined (OPENSSL_NO_RC4)
774    } else if (format == FORMAT_MSBLOB) {
775        pkey = b2i_PrivateKey_bio(key);
776    } else if (format == FORMAT_PVK) {
777        pkey = b2i_PVK_bio(key, (pem_password_cb *)password_callback,
778                           &cb_data);
779#endif
780    } else {
781        BIO_printf(bio_err, "bad input format specified for key file\n");
782        goto end;
783    }
784 end:
785    BIO_free(key);
786    if (pkey == NULL) {
787        BIO_printf(bio_err, "unable to load %s\n", key_descrip);
788        ERR_print_errors(bio_err);
789    }
790    return pkey;
791}
792
793EVP_PKEY *load_pubkey(const char *file, int format, int maybe_stdin,
794                      const char *pass, ENGINE *e, const char *key_descrip)
795{
796    BIO *key = NULL;
797    EVP_PKEY *pkey = NULL;
798    PW_CB_DATA cb_data;
799
800    cb_data.password = pass;
801    cb_data.prompt_info = file;
802
803    if (file == NULL && (!maybe_stdin || format == FORMAT_ENGINE)) {
804        BIO_printf(bio_err, "no keyfile specified\n");
805        goto end;
806    }
807    if (format == FORMAT_ENGINE) {
808        if (e == NULL) {
809            BIO_printf(bio_err, "no engine specified\n");
810        } else {
811#ifndef OPENSSL_NO_ENGINE
812            pkey = ENGINE_load_public_key(e, file, ui_method, &cb_data);
813            if (pkey == NULL) {
814                BIO_printf(bio_err, "cannot load %s from engine\n", key_descrip);
815                ERR_print_errors(bio_err);
816            }
817#else
818            BIO_printf(bio_err, "engines not supported\n");
819#endif
820        }
821        goto end;
822    }
823    if (file == NULL && maybe_stdin) {
824        unbuffer(stdin);
825        key = dup_bio_in(format);
826    } else {
827        key = bio_open_default(file, 'r', format);
828    }
829    if (key == NULL)
830        goto end;
831    if (format == FORMAT_ASN1) {
832        pkey = d2i_PUBKEY_bio(key, NULL);
833    } else if (format == FORMAT_ASN1RSA) {
834#ifndef OPENSSL_NO_RSA
835        RSA *rsa;
836        rsa = d2i_RSAPublicKey_bio(key, NULL);
837        if (rsa) {
838            pkey = EVP_PKEY_new();
839            if (pkey != NULL)
840                EVP_PKEY_set1_RSA(pkey, rsa);
841            RSA_free(rsa);
842        } else
843#else
844        BIO_printf(bio_err, "RSA keys not supported\n");
845#endif
846            pkey = NULL;
847    } else if (format == FORMAT_PEMRSA) {
848#ifndef OPENSSL_NO_RSA
849        RSA *rsa;
850        rsa = PEM_read_bio_RSAPublicKey(key, NULL,
851                                        (pem_password_cb *)password_callback,
852                                        &cb_data);
853        if (rsa != NULL) {
854            pkey = EVP_PKEY_new();
855            if (pkey != NULL)
856                EVP_PKEY_set1_RSA(pkey, rsa);
857            RSA_free(rsa);
858        } else
859#else
860        BIO_printf(bio_err, "RSA keys not supported\n");
861#endif
862            pkey = NULL;
863    } else if (format == FORMAT_PEM) {
864        pkey = PEM_read_bio_PUBKEY(key, NULL,
865                                   (pem_password_cb *)password_callback,
866                                   &cb_data);
867#if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_DSA)
868    } else if (format == FORMAT_MSBLOB) {
869        pkey = b2i_PublicKey_bio(key);
870#endif
871    }
872 end:
873    BIO_free(key);
874    if (pkey == NULL)
875        BIO_printf(bio_err, "unable to load %s\n", key_descrip);
876    return pkey;
877}
878
879static int load_certs_crls(const char *file, int format,
880                           const char *pass, const char *desc,
881                           STACK_OF(X509) **pcerts,
882                           STACK_OF(X509_CRL) **pcrls)
883{
884    int i;
885    BIO *bio;
886    STACK_OF(X509_INFO) *xis = NULL;
887    X509_INFO *xi;
888    PW_CB_DATA cb_data;
889    int rv = 0;
890
891    cb_data.password = pass;
892    cb_data.prompt_info = file;
893
894    if (format != FORMAT_PEM) {
895        BIO_printf(bio_err, "bad input format specified for %s\n", desc);
896        return 0;
897    }
898
899    bio = bio_open_default(file, 'r', FORMAT_PEM);
900    if (bio == NULL)
901        return 0;
902
903    xis = PEM_X509_INFO_read_bio(bio, NULL,
904                                 (pem_password_cb *)password_callback,
905                                 &cb_data);
906
907    BIO_free(bio);
908
909    if (pcerts != NULL && *pcerts == NULL) {
910        *pcerts = sk_X509_new_null();
911        if (*pcerts == NULL)
912            goto end;
913    }
914
915    if (pcrls != NULL && *pcrls == NULL) {
916        *pcrls = sk_X509_CRL_new_null();
917        if (*pcrls == NULL)
918            goto end;
919    }
920
921    for (i = 0; i < sk_X509_INFO_num(xis); i++) {
922        xi = sk_X509_INFO_value(xis, i);
923        if (xi->x509 != NULL && pcerts != NULL) {
924            if (!sk_X509_push(*pcerts, xi->x509))
925                goto end;
926            xi->x509 = NULL;
927        }
928        if (xi->crl != NULL && pcrls != NULL) {
929            if (!sk_X509_CRL_push(*pcrls, xi->crl))
930                goto end;
931            xi->crl = NULL;
932        }
933    }
934
935    if (pcerts != NULL && sk_X509_num(*pcerts) > 0)
936        rv = 1;
937
938    if (pcrls != NULL && sk_X509_CRL_num(*pcrls) > 0)
939        rv = 1;
940
941 end:
942
943    sk_X509_INFO_pop_free(xis, X509_INFO_free);
944
945    if (rv == 0) {
946        if (pcerts != NULL) {
947            sk_X509_pop_free(*pcerts, X509_free);
948            *pcerts = NULL;
949        }
950        if (pcrls != NULL) {
951            sk_X509_CRL_pop_free(*pcrls, X509_CRL_free);
952            *pcrls = NULL;
953        }
954        BIO_printf(bio_err, "unable to load %s\n",
955                   pcerts ? "certificates" : "CRLs");
956        ERR_print_errors(bio_err);
957    }
958    return rv;
959}
960
961void* app_malloc(int sz, const char *what)
962{
963    void *vp = OPENSSL_malloc(sz);
964
965    if (vp == NULL) {
966        BIO_printf(bio_err, "%s: Could not allocate %d bytes for %s\n",
967                opt_getprog(), sz, what);
968        ERR_print_errors(bio_err);
969        exit(1);
970    }
971    return vp;
972}
973
974/*
975 * Initialize or extend, if *certs != NULL, a certificate stack.
976 */
977int load_certs(const char *file, STACK_OF(X509) **certs, int format,
978               const char *pass, const char *desc)
979{
980    return load_certs_crls(file, format, pass, desc, certs, NULL);
981}
982
983/*
984 * Initialize or extend, if *crls != NULL, a certificate stack.
985 */
986int load_crls(const char *file, STACK_OF(X509_CRL) **crls, int format,
987              const char *pass, const char *desc)
988{
989    return load_certs_crls(file, format, pass, desc, NULL, crls);
990}
991
992#define X509V3_EXT_UNKNOWN_MASK         (0xfL << 16)
993/* Return error for unknown extensions */
994#define X509V3_EXT_DEFAULT              0
995/* Print error for unknown extensions */
996#define X509V3_EXT_ERROR_UNKNOWN        (1L << 16)
997/* ASN1 parse unknown extensions */
998#define X509V3_EXT_PARSE_UNKNOWN        (2L << 16)
999/* BIO_dump unknown extensions */
1000#define X509V3_EXT_DUMP_UNKNOWN         (3L << 16)
1001
1002#define X509_FLAG_CA (X509_FLAG_NO_ISSUER | X509_FLAG_NO_PUBKEY | \
1003                         X509_FLAG_NO_HEADER | X509_FLAG_NO_VERSION)
1004
1005int set_cert_ex(unsigned long *flags, const char *arg)
1006{
1007    static const NAME_EX_TBL cert_tbl[] = {
1008        {"compatible", X509_FLAG_COMPAT, 0xffffffffl},
1009        {"ca_default", X509_FLAG_CA, 0xffffffffl},
1010        {"no_header", X509_FLAG_NO_HEADER, 0},
1011        {"no_version", X509_FLAG_NO_VERSION, 0},
1012        {"no_serial", X509_FLAG_NO_SERIAL, 0},
1013        {"no_signame", X509_FLAG_NO_SIGNAME, 0},
1014        {"no_validity", X509_FLAG_NO_VALIDITY, 0},
1015        {"no_subject", X509_FLAG_NO_SUBJECT, 0},
1016        {"no_issuer", X509_FLAG_NO_ISSUER, 0},
1017        {"no_pubkey", X509_FLAG_NO_PUBKEY, 0},
1018        {"no_extensions", X509_FLAG_NO_EXTENSIONS, 0},
1019        {"no_sigdump", X509_FLAG_NO_SIGDUMP, 0},
1020        {"no_aux", X509_FLAG_NO_AUX, 0},
1021        {"no_attributes", X509_FLAG_NO_ATTRIBUTES, 0},
1022        {"ext_default", X509V3_EXT_DEFAULT, X509V3_EXT_UNKNOWN_MASK},
1023        {"ext_error", X509V3_EXT_ERROR_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1024        {"ext_parse", X509V3_EXT_PARSE_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1025        {"ext_dump", X509V3_EXT_DUMP_UNKNOWN, X509V3_EXT_UNKNOWN_MASK},
1026        {NULL, 0, 0}
1027    };
1028    return set_multi_opts(flags, arg, cert_tbl);
1029}
1030
1031int set_name_ex(unsigned long *flags, const char *arg)
1032{
1033    static const NAME_EX_TBL ex_tbl[] = {
1034        {"esc_2253", ASN1_STRFLGS_ESC_2253, 0},
1035        {"esc_2254", ASN1_STRFLGS_ESC_2254, 0},
1036        {"esc_ctrl", ASN1_STRFLGS_ESC_CTRL, 0},
1037        {"esc_msb", ASN1_STRFLGS_ESC_MSB, 0},
1038        {"use_quote", ASN1_STRFLGS_ESC_QUOTE, 0},
1039        {"utf8", ASN1_STRFLGS_UTF8_CONVERT, 0},
1040        {"ignore_type", ASN1_STRFLGS_IGNORE_TYPE, 0},
1041        {"show_type", ASN1_STRFLGS_SHOW_TYPE, 0},
1042        {"dump_all", ASN1_STRFLGS_DUMP_ALL, 0},
1043        {"dump_nostr", ASN1_STRFLGS_DUMP_UNKNOWN, 0},
1044        {"dump_der", ASN1_STRFLGS_DUMP_DER, 0},
1045        {"compat", XN_FLAG_COMPAT, 0xffffffffL},
1046        {"sep_comma_plus", XN_FLAG_SEP_COMMA_PLUS, XN_FLAG_SEP_MASK},
1047        {"sep_comma_plus_space", XN_FLAG_SEP_CPLUS_SPC, XN_FLAG_SEP_MASK},
1048        {"sep_semi_plus_space", XN_FLAG_SEP_SPLUS_SPC, XN_FLAG_SEP_MASK},
1049        {"sep_multiline", XN_FLAG_SEP_MULTILINE, XN_FLAG_SEP_MASK},
1050        {"dn_rev", XN_FLAG_DN_REV, 0},
1051        {"nofname", XN_FLAG_FN_NONE, XN_FLAG_FN_MASK},
1052        {"sname", XN_FLAG_FN_SN, XN_FLAG_FN_MASK},
1053        {"lname", XN_FLAG_FN_LN, XN_FLAG_FN_MASK},
1054        {"align", XN_FLAG_FN_ALIGN, 0},
1055        {"oid", XN_FLAG_FN_OID, XN_FLAG_FN_MASK},
1056        {"space_eq", XN_FLAG_SPC_EQ, 0},
1057        {"dump_unknown", XN_FLAG_DUMP_UNKNOWN_FIELDS, 0},
1058        {"RFC2253", XN_FLAG_RFC2253, 0xffffffffL},
1059        {"oneline", XN_FLAG_ONELINE, 0xffffffffL},
1060        {"multiline", XN_FLAG_MULTILINE, 0xffffffffL},
1061        {"ca_default", XN_FLAG_MULTILINE, 0xffffffffL},
1062        {NULL, 0, 0}
1063    };
1064    if (set_multi_opts(flags, arg, ex_tbl) == 0)
1065        return 0;
1066    if (*flags != XN_FLAG_COMPAT
1067        && (*flags & XN_FLAG_SEP_MASK) == 0)
1068        *flags |= XN_FLAG_SEP_CPLUS_SPC;
1069    return 1;
1070}
1071
1072int set_ext_copy(int *copy_type, const char *arg)
1073{
1074    if (strcasecmp(arg, "none") == 0)
1075        *copy_type = EXT_COPY_NONE;
1076    else if (strcasecmp(arg, "copy") == 0)
1077        *copy_type = EXT_COPY_ADD;
1078    else if (strcasecmp(arg, "copyall") == 0)
1079        *copy_type = EXT_COPY_ALL;
1080    else
1081        return 0;
1082    return 1;
1083}
1084
1085int copy_extensions(X509 *x, X509_REQ *req, int copy_type)
1086{
1087    STACK_OF(X509_EXTENSION) *exts = NULL;
1088    X509_EXTENSION *ext, *tmpext;
1089    ASN1_OBJECT *obj;
1090    int i, idx, ret = 0;
1091    if (!x || !req || (copy_type == EXT_COPY_NONE))
1092        return 1;
1093    exts = X509_REQ_get_extensions(req);
1094
1095    for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
1096        ext = sk_X509_EXTENSION_value(exts, i);
1097        obj = X509_EXTENSION_get_object(ext);
1098        idx = X509_get_ext_by_OBJ(x, obj, -1);
1099        /* Does extension exist? */
1100        if (idx != -1) {
1101            /* If normal copy don't override existing extension */
1102            if (copy_type == EXT_COPY_ADD)
1103                continue;
1104            /* Delete all extensions of same type */
1105            do {
1106                tmpext = X509_get_ext(x, idx);
1107                X509_delete_ext(x, idx);
1108                X509_EXTENSION_free(tmpext);
1109                idx = X509_get_ext_by_OBJ(x, obj, -1);
1110            } while (idx != -1);
1111        }
1112        if (!X509_add_ext(x, ext, -1))
1113            goto end;
1114    }
1115
1116    ret = 1;
1117
1118 end:
1119
1120    sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
1121
1122    return ret;
1123}
1124
1125static int set_multi_opts(unsigned long *flags, const char *arg,
1126                          const NAME_EX_TBL * in_tbl)
1127{
1128    STACK_OF(CONF_VALUE) *vals;
1129    CONF_VALUE *val;
1130    int i, ret = 1;
1131    if (!arg)
1132        return 0;
1133    vals = X509V3_parse_list(arg);
1134    for (i = 0; i < sk_CONF_VALUE_num(vals); i++) {
1135        val = sk_CONF_VALUE_value(vals, i);
1136        if (!set_table_opts(flags, val->name, in_tbl))
1137            ret = 0;
1138    }
1139    sk_CONF_VALUE_pop_free(vals, X509V3_conf_free);
1140    return ret;
1141}
1142
1143static int set_table_opts(unsigned long *flags, const char *arg,
1144                          const NAME_EX_TBL * in_tbl)
1145{
1146    char c;
1147    const NAME_EX_TBL *ptbl;
1148    c = arg[0];
1149
1150    if (c == '-') {
1151        c = 0;
1152        arg++;
1153    } else if (c == '+') {
1154        c = 1;
1155        arg++;
1156    } else {
1157        c = 1;
1158    }
1159
1160    for (ptbl = in_tbl; ptbl->name; ptbl++) {
1161        if (strcasecmp(arg, ptbl->name) == 0) {
1162            *flags &= ~ptbl->mask;
1163            if (c)
1164                *flags |= ptbl->flag;
1165            else
1166                *flags &= ~ptbl->flag;
1167            return 1;
1168        }
1169    }
1170    return 0;
1171}
1172
1173void print_name(BIO *out, const char *title, X509_NAME *nm,
1174                unsigned long lflags)
1175{
1176    char *buf;
1177    char mline = 0;
1178    int indent = 0;
1179
1180    if (title)
1181        BIO_puts(out, title);
1182    if ((lflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
1183        mline = 1;
1184        indent = 4;
1185    }
1186    if (lflags == XN_FLAG_COMPAT) {
1187        buf = X509_NAME_oneline(nm, 0, 0);
1188        BIO_puts(out, buf);
1189        BIO_puts(out, "\n");
1190        OPENSSL_free(buf);
1191    } else {
1192        if (mline)
1193            BIO_puts(out, "\n");
1194        X509_NAME_print_ex(out, nm, indent, lflags);
1195        BIO_puts(out, "\n");
1196    }
1197}
1198
1199void print_bignum_var(BIO *out, const BIGNUM *in, const char *var,
1200                      int len, unsigned char *buffer)
1201{
1202    BIO_printf(out, "    static unsigned char %s_%d[] = {", var, len);
1203    if (BN_is_zero(in)) {
1204        BIO_printf(out, "\n        0x00");
1205    } else {
1206        int i, l;
1207
1208        l = BN_bn2bin(in, buffer);
1209        for (i = 0; i < l; i++) {
1210            BIO_printf(out, (i % 10) == 0 ? "\n        " : " ");
1211            if (i < l - 1)
1212                BIO_printf(out, "0x%02X,", buffer[i]);
1213            else
1214                BIO_printf(out, "0x%02X", buffer[i]);
1215        }
1216    }
1217    BIO_printf(out, "\n    };\n");
1218}
1219
1220void print_array(BIO *out, const char* title, int len, const unsigned char* d)
1221{
1222    int i;
1223
1224    BIO_printf(out, "unsigned char %s[%d] = {", title, len);
1225    for (i = 0; i < len; i++) {
1226        if ((i % 10) == 0)
1227            BIO_printf(out, "\n    ");
1228        if (i < len - 1)
1229            BIO_printf(out, "0x%02X, ", d[i]);
1230        else
1231            BIO_printf(out, "0x%02X", d[i]);
1232    }
1233    BIO_printf(out, "\n};\n");
1234}
1235
1236X509_STORE *setup_verify(const char *CAfile, const char *CApath, int noCAfile, int noCApath)
1237{
1238    X509_STORE *store = X509_STORE_new();
1239    X509_LOOKUP *lookup;
1240
1241    if (store == NULL)
1242        goto end;
1243
1244    if (CAfile != NULL || !noCAfile) {
1245        lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
1246        if (lookup == NULL)
1247            goto end;
1248        if (CAfile) {
1249            if (!X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM)) {
1250                BIO_printf(bio_err, "Error loading file %s\n", CAfile);
1251                goto end;
1252            }
1253        } else {
1254            X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
1255        }
1256    }
1257
1258    if (CApath != NULL || !noCApath) {
1259        lookup = X509_STORE_add_lookup(store, X509_LOOKUP_hash_dir());
1260        if (lookup == NULL)
1261            goto end;
1262        if (CApath) {
1263            if (!X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM)) {
1264                BIO_printf(bio_err, "Error loading directory %s\n", CApath);
1265                goto end;
1266            }
1267        } else {
1268            X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
1269        }
1270    }
1271
1272    ERR_clear_error();
1273    return store;
1274 end:
1275    X509_STORE_free(store);
1276    return NULL;
1277}
1278
1279#ifndef OPENSSL_NO_ENGINE
1280/* Try to load an engine in a shareable library */
1281static ENGINE *try_load_engine(const char *engine)
1282{
1283    ENGINE *e = ENGINE_by_id("dynamic");
1284    if (e) {
1285        if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", engine, 0)
1286            || !ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0)) {
1287            ENGINE_free(e);
1288            e = NULL;
1289        }
1290    }
1291    return e;
1292}
1293#endif
1294
1295ENGINE *setup_engine(const char *engine, int debug)
1296{
1297    ENGINE *e = NULL;
1298
1299#ifndef OPENSSL_NO_ENGINE
1300    if (engine != NULL) {
1301        if (strcmp(engine, "auto") == 0) {
1302            BIO_printf(bio_err, "enabling auto ENGINE support\n");
1303            ENGINE_register_all_complete();
1304            return NULL;
1305        }
1306        if ((e = ENGINE_by_id(engine)) == NULL
1307            && (e = try_load_engine(engine)) == NULL) {
1308            BIO_printf(bio_err, "invalid engine \"%s\"\n", engine);
1309            ERR_print_errors(bio_err);
1310            return NULL;
1311        }
1312        if (debug) {
1313            ENGINE_ctrl(e, ENGINE_CTRL_SET_LOGSTREAM, 0, bio_err, 0);
1314        }
1315        ENGINE_ctrl_cmd(e, "SET_USER_INTERFACE", 0, ui_method, 0, 1);
1316        if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) {
1317            BIO_printf(bio_err, "can't use that engine\n");
1318            ERR_print_errors(bio_err);
1319            ENGINE_free(e);
1320            return NULL;
1321        }
1322
1323        BIO_printf(bio_err, "engine \"%s\" set.\n", ENGINE_get_id(e));
1324    }
1325#endif
1326    return e;
1327}
1328
1329void release_engine(ENGINE *e)
1330{
1331#ifndef OPENSSL_NO_ENGINE
1332    if (e != NULL)
1333        /* Free our "structural" reference. */
1334        ENGINE_free(e);
1335#endif
1336}
1337
1338static unsigned long index_serial_hash(const OPENSSL_CSTRING *a)
1339{
1340    const char *n;
1341
1342    n = a[DB_serial];
1343    while (*n == '0')
1344        n++;
1345    return OPENSSL_LH_strhash(n);
1346}
1347
1348static int index_serial_cmp(const OPENSSL_CSTRING *a,
1349                            const OPENSSL_CSTRING *b)
1350{
1351    const char *aa, *bb;
1352
1353    for (aa = a[DB_serial]; *aa == '0'; aa++) ;
1354    for (bb = b[DB_serial]; *bb == '0'; bb++) ;
1355    return strcmp(aa, bb);
1356}
1357
1358static int index_name_qual(char **a)
1359{
1360    return (a[0][0] == 'V');
1361}
1362
1363static unsigned long index_name_hash(const OPENSSL_CSTRING *a)
1364{
1365    return OPENSSL_LH_strhash(a[DB_name]);
1366}
1367
1368int index_name_cmp(const OPENSSL_CSTRING *a, const OPENSSL_CSTRING *b)
1369{
1370    return strcmp(a[DB_name], b[DB_name]);
1371}
1372
1373static IMPLEMENT_LHASH_HASH_FN(index_serial, OPENSSL_CSTRING)
1374static IMPLEMENT_LHASH_COMP_FN(index_serial, OPENSSL_CSTRING)
1375static IMPLEMENT_LHASH_HASH_FN(index_name, OPENSSL_CSTRING)
1376static IMPLEMENT_LHASH_COMP_FN(index_name, OPENSSL_CSTRING)
1377#undef BSIZE
1378#define BSIZE 256
1379BIGNUM *load_serial(const char *serialfile, int *exists, int create,
1380                    ASN1_INTEGER **retai)
1381{
1382    BIO *in = NULL;
1383    BIGNUM *ret = NULL;
1384    char buf[1024];
1385    ASN1_INTEGER *ai = NULL;
1386
1387    ai = ASN1_INTEGER_new();
1388    if (ai == NULL)
1389        goto err;
1390
1391    in = BIO_new_file(serialfile, "r");
1392    if (exists != NULL)
1393        *exists = in != NULL;
1394    if (in == NULL) {
1395        if (!create) {
1396            perror(serialfile);
1397            goto err;
1398        }
1399        ERR_clear_error();
1400        ret = BN_new();
1401        if (ret == NULL) {
1402            BIO_printf(bio_err, "Out of memory\n");
1403        } else if (!rand_serial(ret, ai)) {
1404            BIO_printf(bio_err, "Error creating random number to store in %s\n",
1405                       serialfile);
1406            BN_free(ret);
1407            ret = NULL;
1408        }
1409    } else {
1410        if (!a2i_ASN1_INTEGER(in, ai, buf, 1024)) {
1411            BIO_printf(bio_err, "unable to load number from %s\n",
1412                       serialfile);
1413            goto err;
1414        }
1415        ret = ASN1_INTEGER_to_BN(ai, NULL);
1416        if (ret == NULL) {
1417            BIO_printf(bio_err,
1418                       "error converting number from bin to BIGNUM\n");
1419            goto err;
1420        }
1421    }
1422
1423    if (ret && retai) {
1424        *retai = ai;
1425        ai = NULL;
1426    }
1427 err:
1428    if (ret == NULL)
1429        ERR_print_errors(bio_err);
1430    BIO_free(in);
1431    ASN1_INTEGER_free(ai);
1432    return ret;
1433}
1434
1435int save_serial(const char *serialfile, const char *suffix, const BIGNUM *serial,
1436                ASN1_INTEGER **retai)
1437{
1438    char buf[1][BSIZE];
1439    BIO *out = NULL;
1440    int ret = 0;
1441    ASN1_INTEGER *ai = NULL;
1442    int j;
1443
1444    if (suffix == NULL)
1445        j = strlen(serialfile);
1446    else
1447        j = strlen(serialfile) + strlen(suffix) + 1;
1448    if (j >= BSIZE) {
1449        BIO_printf(bio_err, "file name too long\n");
1450        goto err;
1451    }
1452
1453    if (suffix == NULL)
1454        OPENSSL_strlcpy(buf[0], serialfile, BSIZE);
1455    else {
1456#ifndef OPENSSL_SYS_VMS
1457        j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", serialfile, suffix);
1458#else
1459        j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", serialfile, suffix);
1460#endif
1461    }
1462    out = BIO_new_file(buf[0], "w");
1463    if (out == NULL) {
1464        ERR_print_errors(bio_err);
1465        goto err;
1466    }
1467
1468    if ((ai = BN_to_ASN1_INTEGER(serial, NULL)) == NULL) {
1469        BIO_printf(bio_err, "error converting serial to ASN.1 format\n");
1470        goto err;
1471    }
1472    i2a_ASN1_INTEGER(out, ai);
1473    BIO_puts(out, "\n");
1474    ret = 1;
1475    if (retai) {
1476        *retai = ai;
1477        ai = NULL;
1478    }
1479 err:
1480    BIO_free_all(out);
1481    ASN1_INTEGER_free(ai);
1482    return ret;
1483}
1484
1485int rotate_serial(const char *serialfile, const char *new_suffix,
1486                  const char *old_suffix)
1487{
1488    char buf[2][BSIZE];
1489    int i, j;
1490
1491    i = strlen(serialfile) + strlen(old_suffix);
1492    j = strlen(serialfile) + strlen(new_suffix);
1493    if (i > j)
1494        j = i;
1495    if (j + 1 >= BSIZE) {
1496        BIO_printf(bio_err, "file name too long\n");
1497        goto err;
1498    }
1499#ifndef OPENSSL_SYS_VMS
1500    j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", serialfile, new_suffix);
1501    j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s.%s", serialfile, old_suffix);
1502#else
1503    j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", serialfile, new_suffix);
1504    j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s-%s", serialfile, old_suffix);
1505#endif
1506    if (rename(serialfile, buf[1]) < 0 && errno != ENOENT
1507#ifdef ENOTDIR
1508        && errno != ENOTDIR
1509#endif
1510        ) {
1511        BIO_printf(bio_err,
1512                   "unable to rename %s to %s\n", serialfile, buf[1]);
1513        perror("reason");
1514        goto err;
1515    }
1516    if (rename(buf[0], serialfile) < 0) {
1517        BIO_printf(bio_err,
1518                   "unable to rename %s to %s\n", buf[0], serialfile);
1519        perror("reason");
1520        rename(buf[1], serialfile);
1521        goto err;
1522    }
1523    return 1;
1524 err:
1525    return 0;
1526}
1527
1528int rand_serial(BIGNUM *b, ASN1_INTEGER *ai)
1529{
1530    BIGNUM *btmp;
1531    int ret = 0;
1532
1533    btmp = b == NULL ? BN_new() : b;
1534    if (btmp == NULL)
1535        return 0;
1536
1537    if (!BN_rand(btmp, SERIAL_RAND_BITS, BN_RAND_TOP_ANY, BN_RAND_BOTTOM_ANY))
1538        goto error;
1539    if (ai && !BN_to_ASN1_INTEGER(btmp, ai))
1540        goto error;
1541
1542    ret = 1;
1543
1544 error:
1545
1546    if (btmp != b)
1547        BN_free(btmp);
1548
1549    return ret;
1550}
1551
1552CA_DB *load_index(const char *dbfile, DB_ATTR *db_attr)
1553{
1554    CA_DB *retdb = NULL;
1555    TXT_DB *tmpdb = NULL;
1556    BIO *in;
1557    CONF *dbattr_conf = NULL;
1558    char buf[BSIZE];
1559#ifndef OPENSSL_NO_POSIX_IO
1560    FILE *dbfp;
1561    struct stat dbst;
1562#endif
1563
1564    in = BIO_new_file(dbfile, "r");
1565    if (in == NULL) {
1566        ERR_print_errors(bio_err);
1567        goto err;
1568    }
1569
1570#ifndef OPENSSL_NO_POSIX_IO
1571    BIO_get_fp(in, &dbfp);
1572    if (fstat(fileno(dbfp), &dbst) == -1) {
1573        SYSerr(SYS_F_FSTAT, errno);
1574        ERR_add_error_data(3, "fstat('", dbfile, "')");
1575        ERR_print_errors(bio_err);
1576        goto err;
1577    }
1578#endif
1579
1580    if ((tmpdb = TXT_DB_read(in, DB_NUMBER)) == NULL)
1581        goto err;
1582
1583#ifndef OPENSSL_SYS_VMS
1584    BIO_snprintf(buf, sizeof(buf), "%s.attr", dbfile);
1585#else
1586    BIO_snprintf(buf, sizeof(buf), "%s-attr", dbfile);
1587#endif
1588    dbattr_conf = app_load_config_quiet(buf);
1589
1590    retdb = app_malloc(sizeof(*retdb), "new DB");
1591    retdb->db = tmpdb;
1592    tmpdb = NULL;
1593    if (db_attr)
1594        retdb->attributes = *db_attr;
1595    else {
1596        retdb->attributes.unique_subject = 1;
1597    }
1598
1599    if (dbattr_conf) {
1600        char *p = NCONF_get_string(dbattr_conf, NULL, "unique_subject");
1601        if (p) {
1602            retdb->attributes.unique_subject = parse_yesno(p, 1);
1603        }
1604    }
1605
1606    retdb->dbfname = OPENSSL_strdup(dbfile);
1607#ifndef OPENSSL_NO_POSIX_IO
1608    retdb->dbst = dbst;
1609#endif
1610
1611 err:
1612    NCONF_free(dbattr_conf);
1613    TXT_DB_free(tmpdb);
1614    BIO_free_all(in);
1615    return retdb;
1616}
1617
1618/*
1619 * Returns > 0 on success, <= 0 on error
1620 */
1621int index_index(CA_DB *db)
1622{
1623    if (!TXT_DB_create_index(db->db, DB_serial, NULL,
1624                             LHASH_HASH_FN(index_serial),
1625                             LHASH_COMP_FN(index_serial))) {
1626        BIO_printf(bio_err,
1627                   "error creating serial number index:(%ld,%ld,%ld)\n",
1628                   db->db->error, db->db->arg1, db->db->arg2);
1629        return 0;
1630    }
1631
1632    if (db->attributes.unique_subject
1633        && !TXT_DB_create_index(db->db, DB_name, index_name_qual,
1634                                LHASH_HASH_FN(index_name),
1635                                LHASH_COMP_FN(index_name))) {
1636        BIO_printf(bio_err, "error creating name index:(%ld,%ld,%ld)\n",
1637                   db->db->error, db->db->arg1, db->db->arg2);
1638        return 0;
1639    }
1640    return 1;
1641}
1642
1643int save_index(const char *dbfile, const char *suffix, CA_DB *db)
1644{
1645    char buf[3][BSIZE];
1646    BIO *out;
1647    int j;
1648
1649    j = strlen(dbfile) + strlen(suffix);
1650    if (j + 6 >= BSIZE) {
1651        BIO_printf(bio_err, "file name too long\n");
1652        goto err;
1653    }
1654#ifndef OPENSSL_SYS_VMS
1655    j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s.attr", dbfile);
1656    j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s.attr.%s", dbfile, suffix);
1657    j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", dbfile, suffix);
1658#else
1659    j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s-attr", dbfile);
1660    j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s-attr-%s", dbfile, suffix);
1661    j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", dbfile, suffix);
1662#endif
1663    out = BIO_new_file(buf[0], "w");
1664    if (out == NULL) {
1665        perror(dbfile);
1666        BIO_printf(bio_err, "unable to open '%s'\n", dbfile);
1667        goto err;
1668    }
1669    j = TXT_DB_write(out, db->db);
1670    BIO_free(out);
1671    if (j <= 0)
1672        goto err;
1673
1674    out = BIO_new_file(buf[1], "w");
1675    if (out == NULL) {
1676        perror(buf[2]);
1677        BIO_printf(bio_err, "unable to open '%s'\n", buf[2]);
1678        goto err;
1679    }
1680    BIO_printf(out, "unique_subject = %s\n",
1681               db->attributes.unique_subject ? "yes" : "no");
1682    BIO_free(out);
1683
1684    return 1;
1685 err:
1686    return 0;
1687}
1688
1689int rotate_index(const char *dbfile, const char *new_suffix,
1690                 const char *old_suffix)
1691{
1692    char buf[5][BSIZE];
1693    int i, j;
1694
1695    i = strlen(dbfile) + strlen(old_suffix);
1696    j = strlen(dbfile) + strlen(new_suffix);
1697    if (i > j)
1698        j = i;
1699    if (j + 6 >= BSIZE) {
1700        BIO_printf(bio_err, "file name too long\n");
1701        goto err;
1702    }
1703#ifndef OPENSSL_SYS_VMS
1704    j = BIO_snprintf(buf[4], sizeof(buf[4]), "%s.attr", dbfile);
1705    j = BIO_snprintf(buf[3], sizeof(buf[3]), "%s.attr.%s", dbfile, old_suffix);
1706    j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s.attr.%s", dbfile, new_suffix);
1707    j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s.%s", dbfile, old_suffix);
1708    j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s.%s", dbfile, new_suffix);
1709#else
1710    j = BIO_snprintf(buf[4], sizeof(buf[4]), "%s-attr", dbfile);
1711    j = BIO_snprintf(buf[3], sizeof(buf[3]), "%s-attr-%s", dbfile, old_suffix);
1712    j = BIO_snprintf(buf[2], sizeof(buf[2]), "%s-attr-%s", dbfile, new_suffix);
1713    j = BIO_snprintf(buf[1], sizeof(buf[1]), "%s-%s", dbfile, old_suffix);
1714    j = BIO_snprintf(buf[0], sizeof(buf[0]), "%s-%s", dbfile, new_suffix);
1715#endif
1716    if (rename(dbfile, buf[1]) < 0 && errno != ENOENT
1717#ifdef ENOTDIR
1718        && errno != ENOTDIR
1719#endif
1720        ) {
1721        BIO_printf(bio_err, "unable to rename %s to %s\n", dbfile, buf[1]);
1722        perror("reason");
1723        goto err;
1724    }
1725    if (rename(buf[0], dbfile) < 0) {
1726        BIO_printf(bio_err, "unable to rename %s to %s\n", buf[0], dbfile);
1727        perror("reason");
1728        rename(buf[1], dbfile);
1729        goto err;
1730    }
1731    if (rename(buf[4], buf[3]) < 0 && errno != ENOENT
1732#ifdef ENOTDIR
1733        && errno != ENOTDIR
1734#endif
1735        ) {
1736        BIO_printf(bio_err, "unable to rename %s to %s\n", buf[4], buf[3]);
1737        perror("reason");
1738        rename(dbfile, buf[0]);
1739        rename(buf[1], dbfile);
1740        goto err;
1741    }
1742    if (rename(buf[2], buf[4]) < 0) {
1743        BIO_printf(bio_err, "unable to rename %s to %s\n", buf[2], buf[4]);
1744        perror("reason");
1745        rename(buf[3], buf[4]);
1746        rename(dbfile, buf[0]);
1747        rename(buf[1], dbfile);
1748        goto err;
1749    }
1750    return 1;
1751 err:
1752    return 0;
1753}
1754
1755void free_index(CA_DB *db)
1756{
1757    if (db) {
1758        TXT_DB_free(db->db);
1759        OPENSSL_free(db->dbfname);
1760        OPENSSL_free(db);
1761    }
1762}
1763
1764int parse_yesno(const char *str, int def)
1765{
1766    if (str) {
1767        switch (*str) {
1768        case 'f':              /* false */
1769        case 'F':              /* FALSE */
1770        case 'n':              /* no */
1771        case 'N':              /* NO */
1772        case '0':              /* 0 */
1773            return 0;
1774        case 't':              /* true */
1775        case 'T':              /* TRUE */
1776        case 'y':              /* yes */
1777        case 'Y':              /* YES */
1778        case '1':              /* 1 */
1779            return 1;
1780        }
1781    }
1782    return def;
1783}
1784
1785/*
1786 * name is expected to be in the format /type0=value0/type1=value1/type2=...
1787 * where characters may be escaped by \
1788 */
1789X509_NAME *parse_name(const char *cp, long chtype, int canmulti)
1790{
1791    int nextismulti = 0;
1792    char *work;
1793    X509_NAME *n;
1794
1795    if (*cp++ != '/') {
1796        BIO_printf(bio_err,
1797                   "name is expected to be in the format "
1798                   "/type0=value0/type1=value1/type2=... where characters may "
1799                   "be escaped by \\. This name is not in that format: '%s'\n",
1800                   --cp);
1801        return NULL;
1802    }
1803
1804    n = X509_NAME_new();
1805    if (n == NULL)
1806        return NULL;
1807    work = OPENSSL_strdup(cp);
1808    if (work == NULL)
1809        goto err;
1810
1811    while (*cp) {
1812        char *bp = work;
1813        char *typestr = bp;
1814        unsigned char *valstr;
1815        int nid;
1816        int ismulti = nextismulti;
1817        nextismulti = 0;
1818
1819        /* Collect the type */
1820        while (*cp && *cp != '=')
1821            *bp++ = *cp++;
1822        if (*cp == '\0') {
1823            BIO_printf(bio_err,
1824                    "%s: Hit end of string before finding the equals.\n",
1825                    opt_getprog());
1826            goto err;
1827        }
1828        *bp++ = '\0';
1829        ++cp;
1830
1831        /* Collect the value. */
1832        valstr = (unsigned char *)bp;
1833        for (; *cp && *cp != '/'; *bp++ = *cp++) {
1834            if (canmulti && *cp == '+') {
1835                nextismulti = 1;
1836                break;
1837            }
1838            if (*cp == '\\' && *++cp == '\0') {
1839                BIO_printf(bio_err,
1840                        "%s: escape character at end of string\n",
1841                        opt_getprog());
1842                goto err;
1843            }
1844        }
1845        *bp++ = '\0';
1846
1847        /* If not at EOS (must be + or /), move forward. */
1848        if (*cp)
1849            ++cp;
1850
1851        /* Parse */
1852        nid = OBJ_txt2nid(typestr);
1853        if (nid == NID_undef) {
1854            BIO_printf(bio_err, "%s: Skipping unknown attribute \"%s\"\n",
1855                      opt_getprog(), typestr);
1856            continue;
1857        }
1858        if (*valstr == '\0') {
1859            BIO_printf(bio_err,
1860                       "%s: No value provided for Subject Attribute %s, skipped\n",
1861                       opt_getprog(), typestr);
1862            continue;
1863        }
1864        if (!X509_NAME_add_entry_by_NID(n, nid, chtype,
1865                                        valstr, strlen((char *)valstr),
1866                                        -1, ismulti ? -1 : 0))
1867            goto err;
1868    }
1869
1870    OPENSSL_free(work);
1871    return n;
1872
1873 err:
1874    X509_NAME_free(n);
1875    OPENSSL_free(work);
1876    return NULL;
1877}
1878
1879/*
1880 * Read whole contents of a BIO into an allocated memory buffer and return
1881 * it.
1882 */
1883
1884int bio_to_mem(unsigned char **out, int maxlen, BIO *in)
1885{
1886    BIO *mem;
1887    int len, ret;
1888    unsigned char tbuf[1024];
1889
1890    mem = BIO_new(BIO_s_mem());
1891    if (mem == NULL)
1892        return -1;
1893    for (;;) {
1894        if ((maxlen != -1) && maxlen < 1024)
1895            len = maxlen;
1896        else
1897            len = 1024;
1898        len = BIO_read(in, tbuf, len);
1899        if (len < 0) {
1900            BIO_free(mem);
1901            return -1;
1902        }
1903        if (len == 0)
1904            break;
1905        if (BIO_write(mem, tbuf, len) != len) {
1906            BIO_free(mem);
1907            return -1;
1908        }
1909        maxlen -= len;
1910
1911        if (maxlen == 0)
1912            break;
1913    }
1914    ret = BIO_get_mem_data(mem, (char **)out);
1915    BIO_set_flags(mem, BIO_FLAGS_MEM_RDONLY);
1916    BIO_free(mem);
1917    return ret;
1918}
1919
1920int pkey_ctrl_string(EVP_PKEY_CTX *ctx, const char *value)
1921{
1922    int rv;
1923    char *stmp, *vtmp = NULL;
1924    stmp = OPENSSL_strdup(value);
1925    if (!stmp)
1926        return -1;
1927    vtmp = strchr(stmp, ':');
1928    if (vtmp) {
1929        *vtmp = 0;
1930        vtmp++;
1931    }
1932    rv = EVP_PKEY_CTX_ctrl_str(ctx, stmp, vtmp);
1933    OPENSSL_free(stmp);
1934    return rv;
1935}
1936
1937static void nodes_print(const char *name, STACK_OF(X509_POLICY_NODE) *nodes)
1938{
1939    X509_POLICY_NODE *node;
1940    int i;
1941
1942    BIO_printf(bio_err, "%s Policies:", name);
1943    if (nodes) {
1944        BIO_puts(bio_err, "\n");
1945        for (i = 0; i < sk_X509_POLICY_NODE_num(nodes); i++) {
1946            node = sk_X509_POLICY_NODE_value(nodes, i);
1947            X509_POLICY_NODE_print(bio_err, node, 2);
1948        }
1949    } else {
1950        BIO_puts(bio_err, " <empty>\n");
1951    }
1952}
1953
1954void policies_print(X509_STORE_CTX *ctx)
1955{
1956    X509_POLICY_TREE *tree;
1957    int explicit_policy;
1958    tree = X509_STORE_CTX_get0_policy_tree(ctx);
1959    explicit_policy = X509_STORE_CTX_get_explicit_policy(ctx);
1960
1961    BIO_printf(bio_err, "Require explicit Policy: %s\n",
1962               explicit_policy ? "True" : "False");
1963
1964    nodes_print("Authority", X509_policy_tree_get0_policies(tree));
1965    nodes_print("User", X509_policy_tree_get0_user_policies(tree));
1966}
1967
1968/*-
1969 * next_protos_parse parses a comma separated list of strings into a string
1970 * in a format suitable for passing to SSL_CTX_set_next_protos_advertised.
1971 *   outlen: (output) set to the length of the resulting buffer on success.
1972 *   err: (maybe NULL) on failure, an error message line is written to this BIO.
1973 *   in: a NUL terminated string like "abc,def,ghi"
1974 *
1975 *   returns: a malloc'd buffer or NULL on failure.
1976 */
1977unsigned char *next_protos_parse(size_t *outlen, const char *in)
1978{
1979    size_t len;
1980    unsigned char *out;
1981    size_t i, start = 0;
1982    size_t skipped = 0;
1983
1984    len = strlen(in);
1985    if (len == 0 || len >= 65535)
1986        return NULL;
1987
1988    out = app_malloc(len + 1, "NPN buffer");
1989    for (i = 0; i <= len; ++i) {
1990        if (i == len || in[i] == ',') {
1991            /*
1992             * Zero-length ALPN elements are invalid on the wire, we could be
1993             * strict and reject the entire string, but just ignoring extra
1994             * commas seems harmless and more friendly.
1995             *
1996             * Every comma we skip in this way puts the input buffer another
1997             * byte ahead of the output buffer, so all stores into the output
1998             * buffer need to be decremented by the number commas skipped.
1999             */
2000            if (i == start) {
2001                ++start;
2002                ++skipped;
2003                continue;
2004            }
2005            if (i - start > 255) {
2006                OPENSSL_free(out);
2007                return NULL;
2008            }
2009            out[start-skipped] = (unsigned char)(i - start);
2010            start = i + 1;
2011        } else {
2012            out[i + 1 - skipped] = in[i];
2013        }
2014    }
2015
2016    if (len <= skipped) {
2017        OPENSSL_free(out);
2018        return NULL;
2019    }
2020
2021    *outlen = len + 1 - skipped;
2022    return out;
2023}
2024
2025void print_cert_checks(BIO *bio, X509 *x,
2026                       const char *checkhost,
2027                       const char *checkemail, const char *checkip)
2028{
2029    if (x == NULL)
2030        return;
2031    if (checkhost) {
2032        BIO_printf(bio, "Hostname %s does%s match certificate\n",
2033                   checkhost,
2034                   X509_check_host(x, checkhost, 0, 0, NULL) == 1
2035                       ? "" : " NOT");
2036    }
2037
2038    if (checkemail) {
2039        BIO_printf(bio, "Email %s does%s match certificate\n",
2040                   checkemail, X509_check_email(x, checkemail, 0, 0)
2041                   ? "" : " NOT");
2042    }
2043
2044    if (checkip) {
2045        BIO_printf(bio, "IP %s does%s match certificate\n",
2046                   checkip, X509_check_ip_asc(x, checkip, 0) ? "" : " NOT");
2047    }
2048}
2049
2050/* Get first http URL from a DIST_POINT structure */
2051
2052static const char *get_dp_url(DIST_POINT *dp)
2053{
2054    GENERAL_NAMES *gens;
2055    GENERAL_NAME *gen;
2056    int i, gtype;
2057    ASN1_STRING *uri;
2058    if (!dp->distpoint || dp->distpoint->type != 0)
2059        return NULL;
2060    gens = dp->distpoint->name.fullname;
2061    for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
2062        gen = sk_GENERAL_NAME_value(gens, i);
2063        uri = GENERAL_NAME_get0_value(gen, &gtype);
2064        if (gtype == GEN_URI && ASN1_STRING_length(uri) > 6) {
2065            const char *uptr = (const char *)ASN1_STRING_get0_data(uri);
2066            if (strncmp(uptr, "http://", 7) == 0)
2067                return uptr;
2068        }
2069    }
2070    return NULL;
2071}
2072
2073/*
2074 * Look through a CRLDP structure and attempt to find an http URL to
2075 * downloads a CRL from.
2076 */
2077
2078static X509_CRL *load_crl_crldp(STACK_OF(DIST_POINT) *crldp)
2079{
2080    int i;
2081    const char *urlptr = NULL;
2082    for (i = 0; i < sk_DIST_POINT_num(crldp); i++) {
2083        DIST_POINT *dp = sk_DIST_POINT_value(crldp, i);
2084        urlptr = get_dp_url(dp);
2085        if (urlptr)
2086            return load_crl(urlptr, FORMAT_HTTP);
2087    }
2088    return NULL;
2089}
2090
2091/*
2092 * Example of downloading CRLs from CRLDP: not usable for real world as it
2093 * always downloads, doesn't support non-blocking I/O and doesn't cache
2094 * anything.
2095 */
2096
2097static STACK_OF(X509_CRL) *crls_http_cb(X509_STORE_CTX *ctx, X509_NAME *nm)
2098{
2099    X509 *x;
2100    STACK_OF(X509_CRL) *crls = NULL;
2101    X509_CRL *crl;
2102    STACK_OF(DIST_POINT) *crldp;
2103
2104    crls = sk_X509_CRL_new_null();
2105    if (!crls)
2106        return NULL;
2107    x = X509_STORE_CTX_get_current_cert(ctx);
2108    crldp = X509_get_ext_d2i(x, NID_crl_distribution_points, NULL, NULL);
2109    crl = load_crl_crldp(crldp);
2110    sk_DIST_POINT_pop_free(crldp, DIST_POINT_free);
2111    if (!crl) {
2112        sk_X509_CRL_free(crls);
2113        return NULL;
2114    }
2115    sk_X509_CRL_push(crls, crl);
2116    /* Try to download delta CRL */
2117    crldp = X509_get_ext_d2i(x, NID_freshest_crl, NULL, NULL);
2118    crl = load_crl_crldp(crldp);
2119    sk_DIST_POINT_pop_free(crldp, DIST_POINT_free);
2120    if (crl)
2121        sk_X509_CRL_push(crls, crl);
2122    return crls;
2123}
2124
2125void store_setup_crl_download(X509_STORE *st)
2126{
2127    X509_STORE_set_lookup_crls_cb(st, crls_http_cb);
2128}
2129
2130/*
2131 * Platform-specific sections
2132 */
2133#if defined(_WIN32)
2134# ifdef fileno
2135#  undef fileno
2136#  define fileno(a) (int)_fileno(a)
2137# endif
2138
2139# include <windows.h>
2140# include <tchar.h>
2141
2142static int WIN32_rename(const char *from, const char *to)
2143{
2144    TCHAR *tfrom = NULL, *tto;
2145    DWORD err;
2146    int ret = 0;
2147
2148    if (sizeof(TCHAR) == 1) {
2149        tfrom = (TCHAR *)from;
2150        tto = (TCHAR *)to;
2151    } else {                    /* UNICODE path */
2152
2153        size_t i, flen = strlen(from) + 1, tlen = strlen(to) + 1;
2154        tfrom = malloc(sizeof(*tfrom) * (flen + tlen));
2155        if (tfrom == NULL)
2156            goto err;
2157        tto = tfrom + flen;
2158# if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2159        if (!MultiByteToWideChar(CP_ACP, 0, from, flen, (WCHAR *)tfrom, flen))
2160# endif
2161            for (i = 0; i < flen; i++)
2162                tfrom[i] = (TCHAR)from[i];
2163# if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2164        if (!MultiByteToWideChar(CP_ACP, 0, to, tlen, (WCHAR *)tto, tlen))
2165# endif
2166            for (i = 0; i < tlen; i++)
2167                tto[i] = (TCHAR)to[i];
2168    }
2169
2170    if (MoveFile(tfrom, tto))
2171        goto ok;
2172    err = GetLastError();
2173    if (err == ERROR_ALREADY_EXISTS || err == ERROR_FILE_EXISTS) {
2174        if (DeleteFile(tto) && MoveFile(tfrom, tto))
2175            goto ok;
2176        err = GetLastError();
2177    }
2178    if (err == ERROR_FILE_NOT_FOUND || err == ERROR_PATH_NOT_FOUND)
2179        errno = ENOENT;
2180    else if (err == ERROR_ACCESS_DENIED)
2181        errno = EACCES;
2182    else
2183        errno = EINVAL;         /* we could map more codes... */
2184 err:
2185    ret = -1;
2186 ok:
2187    if (tfrom != NULL && tfrom != (TCHAR *)from)
2188        free(tfrom);
2189    return ret;
2190}
2191#endif
2192
2193/* app_tminterval section */
2194#if defined(_WIN32)
2195double app_tminterval(int stop, int usertime)
2196{
2197    FILETIME now;
2198    double ret = 0;
2199    static ULARGE_INTEGER tmstart;
2200    static int warning = 1;
2201# ifdef _WIN32_WINNT
2202    static HANDLE proc = NULL;
2203
2204    if (proc == NULL) {
2205        if (check_winnt())
2206            proc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE,
2207                               GetCurrentProcessId());
2208        if (proc == NULL)
2209            proc = (HANDLE) - 1;
2210    }
2211
2212    if (usertime && proc != (HANDLE) - 1) {
2213        FILETIME junk;
2214        GetProcessTimes(proc, &junk, &junk, &junk, &now);
2215    } else
2216# endif
2217    {
2218        SYSTEMTIME systime;
2219
2220        if (usertime && warning) {
2221            BIO_printf(bio_err, "To get meaningful results, run "
2222                       "this program on idle system.\n");
2223            warning = 0;
2224        }
2225        GetSystemTime(&systime);
2226        SystemTimeToFileTime(&systime, &now);
2227    }
2228
2229    if (stop == TM_START) {
2230        tmstart.u.LowPart = now.dwLowDateTime;
2231        tmstart.u.HighPart = now.dwHighDateTime;
2232    } else {
2233        ULARGE_INTEGER tmstop;
2234
2235        tmstop.u.LowPart = now.dwLowDateTime;
2236        tmstop.u.HighPart = now.dwHighDateTime;
2237
2238        ret = (__int64)(tmstop.QuadPart - tmstart.QuadPart) * 1e-7;
2239    }
2240
2241    return ret;
2242}
2243#elif defined(OPENSSL_SYS_VXWORKS)
2244# include <time.h>
2245
2246double app_tminterval(int stop, int usertime)
2247{
2248    double ret = 0;
2249# ifdef CLOCK_REALTIME
2250    static struct timespec tmstart;
2251    struct timespec now;
2252# else
2253    static unsigned long tmstart;
2254    unsigned long now;
2255# endif
2256    static int warning = 1;
2257
2258    if (usertime && warning) {
2259        BIO_printf(bio_err, "To get meaningful results, run "
2260                   "this program on idle system.\n");
2261        warning = 0;
2262    }
2263# ifdef CLOCK_REALTIME
2264    clock_gettime(CLOCK_REALTIME, &now);
2265    if (stop == TM_START)
2266        tmstart = now;
2267    else
2268        ret = ((now.tv_sec + now.tv_nsec * 1e-9)
2269               - (tmstart.tv_sec + tmstart.tv_nsec * 1e-9));
2270# else
2271    now = tickGet();
2272    if (stop == TM_START)
2273        tmstart = now;
2274    else
2275        ret = (now - tmstart) / (double)sysClkRateGet();
2276# endif
2277    return ret;
2278}
2279
2280#elif defined(OPENSSL_SYSTEM_VMS)
2281# include <time.h>
2282# include <times.h>
2283
2284double app_tminterval(int stop, int usertime)
2285{
2286    static clock_t tmstart;
2287    double ret = 0;
2288    clock_t now;
2289# ifdef __TMS
2290    struct tms rus;
2291
2292    now = times(&rus);
2293    if (usertime)
2294        now = rus.tms_utime;
2295# else
2296    if (usertime)
2297        now = clock();          /* sum of user and kernel times */
2298    else {
2299        struct timeval tv;
2300        gettimeofday(&tv, NULL);
2301        now = (clock_t)((unsigned long long)tv.tv_sec * CLK_TCK +
2302                        (unsigned long long)tv.tv_usec * (1000000 / CLK_TCK)
2303            );
2304    }
2305# endif
2306    if (stop == TM_START)
2307        tmstart = now;
2308    else
2309        ret = (now - tmstart) / (double)(CLK_TCK);
2310
2311    return ret;
2312}
2313
2314#elif defined(_SC_CLK_TCK)      /* by means of unistd.h */
2315# include <sys/times.h>
2316
2317double app_tminterval(int stop, int usertime)
2318{
2319    double ret = 0;
2320    struct tms rus;
2321    clock_t now = times(&rus);
2322    static clock_t tmstart;
2323
2324    if (usertime)
2325        now = rus.tms_utime;
2326
2327    if (stop == TM_START) {
2328        tmstart = now;
2329    } else {
2330        long int tck = sysconf(_SC_CLK_TCK);
2331        ret = (now - tmstart) / (double)tck;
2332    }
2333
2334    return ret;
2335}
2336
2337#else
2338# include <sys/time.h>
2339# include <sys/resource.h>
2340
2341double app_tminterval(int stop, int usertime)
2342{
2343    double ret = 0;
2344    struct rusage rus;
2345    struct timeval now;
2346    static struct timeval tmstart;
2347
2348    if (usertime)
2349        getrusage(RUSAGE_SELF, &rus), now = rus.ru_utime;
2350    else
2351        gettimeofday(&now, NULL);
2352
2353    if (stop == TM_START)
2354        tmstart = now;
2355    else
2356        ret = ((now.tv_sec + now.tv_usec * 1e-6)
2357               - (tmstart.tv_sec + tmstart.tv_usec * 1e-6));
2358
2359    return ret;
2360}
2361#endif
2362
2363int app_access(const char* name, int flag)
2364{
2365#ifdef _WIN32
2366    return _access(name, flag);
2367#else
2368    return access(name, flag);
2369#endif
2370}
2371
2372/* app_isdir section */
2373#ifdef _WIN32
2374int app_isdir(const char *name)
2375{
2376    DWORD attr;
2377# if defined(UNICODE) || defined(_UNICODE)
2378    size_t i, len_0 = strlen(name) + 1;
2379    WCHAR tempname[MAX_PATH];
2380
2381    if (len_0 > MAX_PATH)
2382        return -1;
2383
2384#  if !defined(_WIN32_WCE) || _WIN32_WCE>=101
2385    if (!MultiByteToWideChar(CP_ACP, 0, name, len_0, tempname, MAX_PATH))
2386#  endif
2387        for (i = 0; i < len_0; i++)
2388            tempname[i] = (WCHAR)name[i];
2389
2390    attr = GetFileAttributes(tempname);
2391# else
2392    attr = GetFileAttributes(name);
2393# endif
2394    if (attr == INVALID_FILE_ATTRIBUTES)
2395        return -1;
2396    return ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0);
2397}
2398#else
2399# include <sys/stat.h>
2400# ifndef S_ISDIR
2401#  if defined(_S_IFMT) && defined(_S_IFDIR)
2402#   define S_ISDIR(a)   (((a) & _S_IFMT) == _S_IFDIR)
2403#  else
2404#   define S_ISDIR(a)   (((a) & S_IFMT) == S_IFDIR)
2405#  endif
2406# endif
2407
2408int app_isdir(const char *name)
2409{
2410# if defined(S_ISDIR)
2411    struct stat st;
2412
2413    if (stat(name, &st) == 0)
2414        return S_ISDIR(st.st_mode);
2415    else
2416        return -1;
2417# else
2418    return -1;
2419# endif
2420}
2421#endif
2422
2423/* raw_read|write section */
2424#if defined(__VMS)
2425# include "vms_term_sock.h"
2426static int stdin_sock = -1;
2427
2428static void close_stdin_sock(void)
2429{
2430    TerminalSocket (TERM_SOCK_DELETE, &stdin_sock);
2431}
2432
2433int fileno_stdin(void)
2434{
2435    if (stdin_sock == -1) {
2436        TerminalSocket(TERM_SOCK_CREATE, &stdin_sock);
2437        atexit(close_stdin_sock);
2438    }
2439
2440    return stdin_sock;
2441}
2442#else
2443int fileno_stdin(void)
2444{
2445    return fileno(stdin);
2446}
2447#endif
2448
2449int fileno_stdout(void)
2450{
2451    return fileno(stdout);
2452}
2453
2454#if defined(_WIN32) && defined(STD_INPUT_HANDLE)
2455int raw_read_stdin(void *buf, int siz)
2456{
2457    DWORD n;
2458    if (ReadFile(GetStdHandle(STD_INPUT_HANDLE), buf, siz, &n, NULL))
2459        return n;
2460    else
2461        return -1;
2462}
2463#elif defined(__VMS)
2464# include <sys/socket.h>
2465
2466int raw_read_stdin(void *buf, int siz)
2467{
2468    return recv(fileno_stdin(), buf, siz, 0);
2469}
2470#else
2471int raw_read_stdin(void *buf, int siz)
2472{
2473    return read(fileno_stdin(), buf, siz);
2474}
2475#endif
2476
2477#if defined(_WIN32) && defined(STD_OUTPUT_HANDLE)
2478int raw_write_stdout(const void *buf, int siz)
2479{
2480    DWORD n;
2481    if (WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), buf, siz, &n, NULL))
2482        return n;
2483    else
2484        return -1;
2485}
2486#else
2487int raw_write_stdout(const void *buf, int siz)
2488{
2489    return write(fileno_stdout(), buf, siz);
2490}
2491#endif
2492
2493/*
2494 * Centralized handling if input and output files with format specification
2495 * The format is meant to show what the input and output is supposed to be,
2496 * and is therefore a show of intent more than anything else.  However, it
2497 * does impact behavior on some platform, such as differentiating between
2498 * text and binary input/output on non-Unix platforms
2499 */
2500static int istext(int format)
2501{
2502    return (format & B_FORMAT_TEXT) == B_FORMAT_TEXT;
2503}
2504
2505BIO *dup_bio_in(int format)
2506{
2507    return BIO_new_fp(stdin,
2508                      BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2509}
2510
2511static BIO_METHOD *prefix_method = NULL;
2512
2513BIO *dup_bio_out(int format)
2514{
2515    BIO *b = BIO_new_fp(stdout,
2516                        BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2517    void *prefix = NULL;
2518
2519#ifdef OPENSSL_SYS_VMS
2520    if (istext(format))
2521        b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
2522#endif
2523
2524    if (istext(format) && (prefix = getenv("HARNESS_OSSL_PREFIX")) != NULL) {
2525        if (prefix_method == NULL)
2526            prefix_method = apps_bf_prefix();
2527        b = BIO_push(BIO_new(prefix_method), b);
2528        BIO_ctrl(b, PREFIX_CTRL_SET_PREFIX, 0, prefix);
2529    }
2530
2531    return b;
2532}
2533
2534BIO *dup_bio_err(int format)
2535{
2536    BIO *b = BIO_new_fp(stderr,
2537                        BIO_NOCLOSE | (istext(format) ? BIO_FP_TEXT : 0));
2538#ifdef OPENSSL_SYS_VMS
2539    if (istext(format))
2540        b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
2541#endif
2542    return b;
2543}
2544
2545void destroy_prefix_method(void)
2546{
2547    BIO_meth_free(prefix_method);
2548    prefix_method = NULL;
2549}
2550
2551void unbuffer(FILE *fp)
2552{
2553/*
2554 * On VMS, setbuf() will only take 32-bit pointers, and a compilation
2555 * with /POINTER_SIZE=64 will give off a MAYLOSEDATA2 warning here.
2556 * However, we trust that the C RTL will never give us a FILE pointer
2557 * above the first 4 GB of memory, so we simply turn off the warning
2558 * temporarily.
2559 */
2560#if defined(OPENSSL_SYS_VMS) && defined(__DECC)
2561# pragma environment save
2562# pragma message disable maylosedata2
2563#endif
2564    setbuf(fp, NULL);
2565#if defined(OPENSSL_SYS_VMS) && defined(__DECC)
2566# pragma environment restore
2567#endif
2568}
2569
2570static const char *modestr(char mode, int format)
2571{
2572    OPENSSL_assert(mode == 'a' || mode == 'r' || mode == 'w');
2573
2574    switch (mode) {
2575    case 'a':
2576        return istext(format) ? "a" : "ab";
2577    case 'r':
2578        return istext(format) ? "r" : "rb";
2579    case 'w':
2580        return istext(format) ? "w" : "wb";
2581    }
2582    /* The assert above should make sure we never reach this point */
2583    return NULL;
2584}
2585
2586static const char *modeverb(char mode)
2587{
2588    switch (mode) {
2589    case 'a':
2590        return "appending";
2591    case 'r':
2592        return "reading";
2593    case 'w':
2594        return "writing";
2595    }
2596    return "(doing something)";
2597}
2598
2599/*
2600 * Open a file for writing, owner-read-only.
2601 */
2602BIO *bio_open_owner(const char *filename, int format, int private)
2603{
2604    FILE *fp = NULL;
2605    BIO *b = NULL;
2606    int fd = -1, bflags, mode, textmode;
2607
2608    if (!private || filename == NULL || strcmp(filename, "-") == 0)
2609        return bio_open_default(filename, 'w', format);
2610
2611    mode = O_WRONLY;
2612#ifdef O_CREAT
2613    mode |= O_CREAT;
2614#endif
2615#ifdef O_TRUNC
2616    mode |= O_TRUNC;
2617#endif
2618    textmode = istext(format);
2619    if (!textmode) {
2620#ifdef O_BINARY
2621        mode |= O_BINARY;
2622#elif defined(_O_BINARY)
2623        mode |= _O_BINARY;
2624#endif
2625    }
2626
2627#ifdef OPENSSL_SYS_VMS
2628    /* VMS doesn't have O_BINARY, it just doesn't make sense.  But,
2629     * it still needs to know that we're going binary, or fdopen()
2630     * will fail with "invalid argument"...  so we tell VMS what the
2631     * context is.
2632     */
2633    if (!textmode)
2634        fd = open(filename, mode, 0600, "ctx=bin");
2635    else
2636#endif
2637        fd = open(filename, mode, 0600);
2638    if (fd < 0)
2639        goto err;
2640    fp = fdopen(fd, modestr('w', format));
2641    if (fp == NULL)
2642        goto err;
2643    bflags = BIO_CLOSE;
2644    if (textmode)
2645        bflags |= BIO_FP_TEXT;
2646    b = BIO_new_fp(fp, bflags);
2647    if (b)
2648        return b;
2649
2650 err:
2651    BIO_printf(bio_err, "%s: Can't open \"%s\" for writing, %s\n",
2652               opt_getprog(), filename, strerror(errno));
2653    ERR_print_errors(bio_err);
2654    /* If we have fp, then fdopen took over fd, so don't close both. */
2655    if (fp)
2656        fclose(fp);
2657    else if (fd >= 0)
2658        close(fd);
2659    return NULL;
2660}
2661
2662static BIO *bio_open_default_(const char *filename, char mode, int format,
2663                              int quiet)
2664{
2665    BIO *ret;
2666
2667    if (filename == NULL || strcmp(filename, "-") == 0) {
2668        ret = mode == 'r' ? dup_bio_in(format) : dup_bio_out(format);
2669        if (quiet) {
2670            ERR_clear_error();
2671            return ret;
2672        }
2673        if (ret != NULL)
2674            return ret;
2675        BIO_printf(bio_err,
2676                   "Can't open %s, %s\n",
2677                   mode == 'r' ? "stdin" : "stdout", strerror(errno));
2678    } else {
2679        ret = BIO_new_file(filename, modestr(mode, format));
2680        if (quiet) {
2681            ERR_clear_error();
2682            return ret;
2683        }
2684        if (ret != NULL)
2685            return ret;
2686        BIO_printf(bio_err,
2687                   "Can't open %s for %s, %s\n",
2688                   filename, modeverb(mode), strerror(errno));
2689    }
2690    ERR_print_errors(bio_err);
2691    return NULL;
2692}
2693
2694BIO *bio_open_default(const char *filename, char mode, int format)
2695{
2696    return bio_open_default_(filename, mode, format, 0);
2697}
2698
2699BIO *bio_open_default_quiet(const char *filename, char mode, int format)
2700{
2701    return bio_open_default_(filename, mode, format, 1);
2702}
2703
2704void wait_for_async(SSL *s)
2705{
2706    /* On Windows select only works for sockets, so we simply don't wait  */
2707#ifndef OPENSSL_SYS_WINDOWS
2708    int width = 0;
2709    fd_set asyncfds;
2710    OSSL_ASYNC_FD *fds;
2711    size_t numfds;
2712    size_t i;
2713
2714    if (!SSL_get_all_async_fds(s, NULL, &numfds))
2715        return;
2716    if (numfds == 0)
2717        return;
2718    fds = app_malloc(sizeof(OSSL_ASYNC_FD) * numfds, "allocate async fds");
2719    if (!SSL_get_all_async_fds(s, fds, &numfds)) {
2720        OPENSSL_free(fds);
2721        return;
2722    }
2723
2724    FD_ZERO(&asyncfds);
2725    for (i = 0; i < numfds; i++) {
2726        if (width <= (int)fds[i])
2727            width = (int)fds[i] + 1;
2728        openssl_fdset((int)fds[i], &asyncfds);
2729    }
2730    select(width, (void *)&asyncfds, NULL, NULL, NULL);
2731    OPENSSL_free(fds);
2732#endif
2733}
2734
2735/* if OPENSSL_SYS_WINDOWS is defined then so is OPENSSL_SYS_MSDOS */
2736#if defined(OPENSSL_SYS_MSDOS)
2737int has_stdin_waiting(void)
2738{
2739# if defined(OPENSSL_SYS_WINDOWS)
2740    HANDLE inhand = GetStdHandle(STD_INPUT_HANDLE);
2741    DWORD events = 0;
2742    INPUT_RECORD inputrec;
2743    DWORD insize = 1;
2744    BOOL peeked;
2745
2746    if (inhand == INVALID_HANDLE_VALUE) {
2747        return 0;
2748    }
2749
2750    peeked = PeekConsoleInput(inhand, &inputrec, insize, &events);
2751    if (!peeked) {
2752        /* Probably redirected input? _kbhit() does not work in this case */
2753        if (!feof(stdin)) {
2754            return 1;
2755        }
2756        return 0;
2757    }
2758# endif
2759    return _kbhit();
2760}
2761#endif
2762
2763/* Corrupt a signature by modifying final byte */
2764void corrupt_signature(const ASN1_STRING *signature)
2765{
2766        unsigned char *s = signature->data;
2767        s[signature->length - 1] ^= 0x1;
2768}
2769
2770int set_cert_times(X509 *x, const char *startdate, const char *enddate,
2771                   int days)
2772{
2773    if (startdate == NULL || strcmp(startdate, "today") == 0) {
2774        if (X509_gmtime_adj(X509_getm_notBefore(x), 0) == NULL)
2775            return 0;
2776    } else {
2777        if (!ASN1_TIME_set_string_X509(X509_getm_notBefore(x), startdate))
2778            return 0;
2779    }
2780    if (enddate == NULL) {
2781        if (X509_time_adj_ex(X509_getm_notAfter(x), days, 0, NULL)
2782            == NULL)
2783            return 0;
2784    } else if (!ASN1_TIME_set_string_X509(X509_getm_notAfter(x), enddate)) {
2785        return 0;
2786    }
2787    return 1;
2788}
2789
2790void make_uppercase(char *string)
2791{
2792    int i;
2793
2794    for (i = 0; string[i] != '\0'; i++)
2795        string[i] = toupper((unsigned char)string[i]);
2796}
2797