| 1 | /*
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| 2 | * Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <openssl/opensslconf.h>
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| 11 | #include "apps.h"
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| 12 | #include "progs.h"
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| 13 | #include <stdio.h>
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| 14 | #include <stdlib.h>
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| 15 | #include <string.h>
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| 16 | #include <openssl/err.h>
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| 17 | #include <openssl/engine.h>
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| 18 | #include <openssl/ssl.h>
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| 19 | #include <openssl/store.h>
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| 20 |
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| 21 | typedef enum OPTION_choice {
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| 22 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
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| 23 | OPT_C, OPT_T, OPT_TT, OPT_PRE, OPT_POST,
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| 24 | OPT_V = 100, OPT_VV, OPT_VVV, OPT_VVVV
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| 25 | } OPTION_CHOICE;
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| 26 |
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| 27 | const OPTIONS engine_options[] = {
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| 28 | {OPT_HELP_STR, 1, '-', "Usage: %s [options] engine...\n"},
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| 29 | {OPT_HELP_STR, 1, '-',
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| 30 | " engine... Engines to load\n"},
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| 31 | {"help", OPT_HELP, '-', "Display this summary"},
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| 32 | {"v", OPT_V, '-', "List 'control commands' For each specified engine"},
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| 33 | {"vv", OPT_VV, '-', "Also display each command's description"},
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| 34 | {"vvv", OPT_VVV, '-', "Also add the input flags for each command"},
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| 35 | {"vvvv", OPT_VVVV, '-', "Also show internal input flags"},
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| 36 | {"c", OPT_C, '-', "List the capabilities of specified engine"},
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| 37 | {"t", OPT_T, '-', "Check that specified engine is available"},
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| 38 | {"tt", OPT_TT, '-', "Display error trace for unavailable engines"},
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| 39 | {"pre", OPT_PRE, 's', "Run command against the ENGINE before loading it"},
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| 40 | {"post", OPT_POST, 's', "Run command against the ENGINE after loading it"},
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| 41 | {OPT_MORE_STR, OPT_EOF, 1,
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| 42 | "Commands are like \"SO_PATH:/lib/libdriver.so\""},
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| 43 | {NULL}
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| 44 | };
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| 45 |
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| 46 | static int append_buf(char **buf, int *size, const char *s)
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| 47 | {
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| 48 | const int expand = 256;
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| 49 | int len = strlen(s) + 1;
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| 50 | char *p = *buf;
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| 51 |
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| 52 | if (p == NULL) {
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| 53 | *size = ((len + expand - 1) / expand) * expand;
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| 54 | p = *buf = app_malloc(*size, "engine buffer");
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| 55 | } else {
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| 56 | const int blen = strlen(p);
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| 57 |
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| 58 | if (blen > 0)
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| 59 | len += 2 + blen;
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| 60 |
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| 61 | if (len > *size) {
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| 62 | *size = ((len + expand - 1) / expand) * expand;
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| 63 | p = OPENSSL_realloc(p, *size);
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| 64 | if (p == NULL) {
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| 65 | OPENSSL_free(*buf);
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| 66 | *buf = NULL;
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| 67 | return 0;
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| 68 | }
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| 69 | *buf = p;
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| 70 | }
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| 71 |
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| 72 | if (blen > 0) {
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| 73 | p += blen;
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| 74 | *p++ = ',';
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| 75 | *p++ = ' ';
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| 76 | }
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| 77 | }
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| 78 |
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| 79 | strcpy(p, s);
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| 80 | return 1;
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| 81 | }
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| 82 |
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| 83 | static int util_flags(BIO *out, unsigned int flags, const char *indent)
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| 84 | {
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| 85 | int started = 0, err = 0;
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| 86 | /* Indent before displaying input flags */
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| 87 | BIO_printf(out, "%s%s(input flags): ", indent, indent);
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| 88 | if (flags == 0) {
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| 89 | BIO_printf(out, "<no flags>\n");
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| 90 | return 1;
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| 91 | }
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| 92 | /*
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| 93 | * If the object is internal, mark it in a way that shows instead of
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| 94 | * having it part of all the other flags, even if it really is.
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| 95 | */
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| 96 | if (flags & ENGINE_CMD_FLAG_INTERNAL) {
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| 97 | BIO_printf(out, "[Internal] ");
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| 98 | }
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| 99 |
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| 100 | if (flags & ENGINE_CMD_FLAG_NUMERIC) {
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| 101 | BIO_printf(out, "NUMERIC");
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| 102 | started = 1;
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| 103 | }
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| 104 | /*
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| 105 | * Now we check that no combinations of the mutually exclusive NUMERIC,
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| 106 | * STRING, and NO_INPUT flags have been used. Future flags that can be
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| 107 | * OR'd together with these would need to added after these to preserve
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| 108 | * the testing logic.
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| 109 | */
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| 110 | if (flags & ENGINE_CMD_FLAG_STRING) {
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| 111 | if (started) {
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| 112 | BIO_printf(out, "|");
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| 113 | err = 1;
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| 114 | }
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| 115 | BIO_printf(out, "STRING");
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| 116 | started = 1;
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| 117 | }
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| 118 | if (flags & ENGINE_CMD_FLAG_NO_INPUT) {
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| 119 | if (started) {
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| 120 | BIO_printf(out, "|");
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| 121 | err = 1;
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| 122 | }
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| 123 | BIO_printf(out, "NO_INPUT");
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| 124 | started = 1;
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| 125 | }
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| 126 | /* Check for unknown flags */
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| 127 | flags = flags & ~ENGINE_CMD_FLAG_NUMERIC &
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| 128 | ~ENGINE_CMD_FLAG_STRING &
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| 129 | ~ENGINE_CMD_FLAG_NO_INPUT & ~ENGINE_CMD_FLAG_INTERNAL;
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| 130 | if (flags) {
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| 131 | if (started)
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| 132 | BIO_printf(out, "|");
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| 133 | BIO_printf(out, "<0x%04X>", flags);
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| 134 | }
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| 135 | if (err)
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| 136 | BIO_printf(out, " <illegal flags!>");
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| 137 | BIO_printf(out, "\n");
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| 138 | return 1;
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| 139 | }
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| 140 |
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| 141 | static int util_verbose(ENGINE *e, int verbose, BIO *out, const char *indent)
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| 142 | {
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| 143 | static const int line_wrap = 78;
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| 144 | int num;
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| 145 | int ret = 0;
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| 146 | char *name = NULL;
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| 147 | char *desc = NULL;
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| 148 | int flags;
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| 149 | int xpos = 0;
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| 150 | STACK_OF(OPENSSL_STRING) *cmds = NULL;
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| 151 | if (!ENGINE_ctrl(e, ENGINE_CTRL_HAS_CTRL_FUNCTION, 0, NULL, NULL) ||
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| 152 | ((num = ENGINE_ctrl(e, ENGINE_CTRL_GET_FIRST_CMD_TYPE,
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| 153 | 0, NULL, NULL)) <= 0)) {
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| 154 | return 1;
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| 155 | }
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| 156 |
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| 157 | cmds = sk_OPENSSL_STRING_new_null();
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| 158 | if (cmds == NULL)
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| 159 | goto err;
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| 160 |
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| 161 | do {
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| 162 | int len;
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| 163 | /* Get the command input flags */
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| 164 | if ((flags = ENGINE_ctrl(e, ENGINE_CTRL_GET_CMD_FLAGS, num,
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| 165 | NULL, NULL)) < 0)
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| 166 | goto err;
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| 167 | if (!(flags & ENGINE_CMD_FLAG_INTERNAL) || verbose >= 4) {
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| 168 | /* Get the command name */
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| 169 | if ((len = ENGINE_ctrl(e, ENGINE_CTRL_GET_NAME_LEN_FROM_CMD, num,
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| 170 | NULL, NULL)) <= 0)
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| 171 | goto err;
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| 172 | name = app_malloc(len + 1, "name buffer");
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| 173 | if (ENGINE_ctrl(e, ENGINE_CTRL_GET_NAME_FROM_CMD, num, name,
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| 174 | NULL) <= 0)
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| 175 | goto err;
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| 176 | /* Get the command description */
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| 177 | if ((len = ENGINE_ctrl(e, ENGINE_CTRL_GET_DESC_LEN_FROM_CMD, num,
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| 178 | NULL, NULL)) < 0)
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| 179 | goto err;
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| 180 | if (len > 0) {
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| 181 | desc = app_malloc(len + 1, "description buffer");
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| 182 | if (ENGINE_ctrl(e, ENGINE_CTRL_GET_DESC_FROM_CMD, num, desc,
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| 183 | NULL) <= 0)
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| 184 | goto err;
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| 185 | }
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| 186 | /* Now decide on the output */
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| 187 | if (xpos == 0)
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| 188 | /* Do an indent */
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| 189 | xpos = BIO_puts(out, indent);
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| 190 | else
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| 191 | /* Otherwise prepend a ", " */
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| 192 | xpos += BIO_printf(out, ", ");
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| 193 | if (verbose == 1) {
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| 194 | /*
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| 195 | * We're just listing names, comma-delimited
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| 196 | */
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| 197 | if ((xpos > (int)strlen(indent)) &&
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| 198 | (xpos + (int)strlen(name) > line_wrap)) {
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| 199 | BIO_printf(out, "\n");
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| 200 | xpos = BIO_puts(out, indent);
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| 201 | }
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| 202 | xpos += BIO_printf(out, "%s", name);
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| 203 | } else {
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| 204 | /* We're listing names plus descriptions */
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| 205 | BIO_printf(out, "%s: %s\n", name,
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| 206 | (desc == NULL) ? "<no description>" : desc);
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| 207 | /* ... and sometimes input flags */
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| 208 | if ((verbose >= 3) && !util_flags(out, flags, indent))
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| 209 | goto err;
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| 210 | xpos = 0;
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| 211 | }
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| 212 | }
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| 213 | OPENSSL_free(name);
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| 214 | name = NULL;
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| 215 | OPENSSL_free(desc);
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| 216 | desc = NULL;
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| 217 | /* Move to the next command */
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| 218 | num = ENGINE_ctrl(e, ENGINE_CTRL_GET_NEXT_CMD_TYPE, num, NULL, NULL);
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| 219 | } while (num > 0);
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| 220 | if (xpos > 0)
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| 221 | BIO_printf(out, "\n");
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| 222 | ret = 1;
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| 223 | err:
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| 224 | sk_OPENSSL_STRING_free(cmds);
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| 225 | OPENSSL_free(name);
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| 226 | OPENSSL_free(desc);
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| 227 | return ret;
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| 228 | }
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| 229 |
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| 230 | static void util_do_cmds(ENGINE *e, STACK_OF(OPENSSL_STRING) *cmds,
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| 231 | BIO *out, const char *indent)
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| 232 | {
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| 233 | int loop, res, num = sk_OPENSSL_STRING_num(cmds);
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| 234 |
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| 235 | if (num < 0) {
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| 236 | BIO_printf(out, "[Error]: internal stack error\n");
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| 237 | return;
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| 238 | }
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| 239 | for (loop = 0; loop < num; loop++) {
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| 240 | char buf[256];
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| 241 | const char *cmd, *arg;
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| 242 | cmd = sk_OPENSSL_STRING_value(cmds, loop);
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| 243 | res = 1; /* assume success */
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| 244 | /* Check if this command has no ":arg" */
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| 245 | if ((arg = strstr(cmd, ":")) == NULL) {
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| 246 | if (!ENGINE_ctrl_cmd_string(e, cmd, NULL, 0))
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| 247 | res = 0;
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| 248 | } else {
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| 249 | if ((int)(arg - cmd) > 254) {
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| 250 | BIO_printf(out, "[Error]: command name too long\n");
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| 251 | return;
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| 252 | }
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| 253 | memcpy(buf, cmd, (int)(arg - cmd));
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| 254 | buf[arg - cmd] = '\0';
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| 255 | arg++; /* Move past the ":" */
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| 256 | /* Call the command with the argument */
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| 257 | if (!ENGINE_ctrl_cmd_string(e, buf, arg, 0))
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| 258 | res = 0;
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| 259 | }
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| 260 | if (res) {
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| 261 | BIO_printf(out, "[Success]: %s\n", cmd);
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| 262 | } else {
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| 263 | BIO_printf(out, "[Failure]: %s\n", cmd);
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| 264 | ERR_print_errors(out);
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| 265 | }
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| 266 | }
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| 267 | }
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| 268 |
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| 269 | struct util_store_cap_data {
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| 270 | ENGINE *engine;
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| 271 | char **cap_buf;
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| 272 | int *cap_size;
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| 273 | int ok;
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| 274 | };
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| 275 | static void util_store_cap(const OSSL_STORE_LOADER *loader, void *arg)
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| 276 | {
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| 277 | struct util_store_cap_data *ctx = arg;
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| 278 |
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| 279 | if (OSSL_STORE_LOADER_get0_engine(loader) == ctx->engine) {
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| 280 | char buf[256];
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| 281 | BIO_snprintf(buf, sizeof(buf), "STORE(%s)",
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| 282 | OSSL_STORE_LOADER_get0_scheme(loader));
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| 283 | if (!append_buf(ctx->cap_buf, ctx->cap_size, buf))
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| 284 | ctx->ok = 0;
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| 285 | }
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| 286 | }
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| 287 |
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| 288 | int engine_main(int argc, char **argv)
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| 289 | {
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| 290 | int ret = 1, i;
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| 291 | int verbose = 0, list_cap = 0, test_avail = 0, test_avail_noise = 0;
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| 292 | ENGINE *e;
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| 293 | STACK_OF(OPENSSL_CSTRING) *engines = sk_OPENSSL_CSTRING_new_null();
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| 294 | STACK_OF(OPENSSL_STRING) *pre_cmds = sk_OPENSSL_STRING_new_null();
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| 295 | STACK_OF(OPENSSL_STRING) *post_cmds = sk_OPENSSL_STRING_new_null();
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| 296 | BIO *out;
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| 297 | const char *indent = " ";
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| 298 | OPTION_CHOICE o;
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| 299 | char *prog;
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| 300 | char *argv1;
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| 301 |
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| 302 | out = dup_bio_out(FORMAT_TEXT);
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| 303 | if (engines == NULL || pre_cmds == NULL || post_cmds == NULL)
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| 304 | goto end;
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| 305 |
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| 306 | /* Remember the original command name, parse/skip any leading engine
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| 307 | * names, and then setup to parse the rest of the line as flags. */
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| 308 | prog = argv[0];
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| 309 | while ((argv1 = argv[1]) != NULL && *argv1 != '-') {
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| 310 | sk_OPENSSL_CSTRING_push(engines, argv1);
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| 311 | argc--;
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| 312 | argv++;
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| 313 | }
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| 314 | argv[0] = prog;
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| 315 | opt_init(argc, argv, engine_options);
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| 316 |
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| 317 | while ((o = opt_next()) != OPT_EOF) {
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| 318 | switch (o) {
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| 319 | case OPT_EOF:
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| 320 | case OPT_ERR:
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| 321 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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| 322 | goto end;
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| 323 | case OPT_HELP:
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| 324 | opt_help(engine_options);
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| 325 | ret = 0;
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| 326 | goto end;
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| 327 | case OPT_VVVV:
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| 328 | case OPT_VVV:
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| 329 | case OPT_VV:
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| 330 | case OPT_V:
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| 331 | /* Convert to an integer from one to four. */
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| 332 | i = (int)(o - OPT_V) + 1;
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| 333 | if (verbose < i)
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| 334 | verbose = i;
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| 335 | break;
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| 336 | case OPT_C:
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| 337 | list_cap = 1;
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| 338 | break;
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| 339 | case OPT_TT:
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| 340 | test_avail_noise++;
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| 341 | /* fall thru */
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| 342 | case OPT_T:
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| 343 | test_avail++;
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| 344 | break;
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| 345 | case OPT_PRE:
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| 346 | sk_OPENSSL_STRING_push(pre_cmds, opt_arg());
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| 347 | break;
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| 348 | case OPT_POST:
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| 349 | sk_OPENSSL_STRING_push(post_cmds, opt_arg());
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| 350 | break;
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| 351 | }
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| 352 | }
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| 353 |
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| 354 | /* Allow any trailing parameters as engine names. */
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| 355 | argc = opt_num_rest();
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| 356 | argv = opt_rest();
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| 357 | for ( ; *argv; argv++) {
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| 358 | if (**argv == '-') {
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| 359 | BIO_printf(bio_err, "%s: Cannot mix flags and engine names.\n",
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| 360 | prog);
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| 361 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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| 362 | goto end;
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| 363 | }
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| 364 | sk_OPENSSL_CSTRING_push(engines, *argv);
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| 365 | }
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| 366 |
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| 367 | if (sk_OPENSSL_CSTRING_num(engines) == 0) {
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| 368 | for (e = ENGINE_get_first(); e != NULL; e = ENGINE_get_next(e)) {
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| 369 | sk_OPENSSL_CSTRING_push(engines, ENGINE_get_id(e));
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| 370 | }
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| 371 | }
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| 372 |
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| 373 | ret = 0;
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| 374 | for (i = 0; i < sk_OPENSSL_CSTRING_num(engines); i++) {
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| 375 | const char *id = sk_OPENSSL_CSTRING_value(engines, i);
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| 376 | if ((e = ENGINE_by_id(id)) != NULL) {
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| 377 | const char *name = ENGINE_get_name(e);
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| 378 | /*
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| 379 | * Do "id" first, then "name". Easier to auto-parse.
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| 380 | */
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| 381 | BIO_printf(out, "(%s) %s\n", id, name);
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| 382 | util_do_cmds(e, pre_cmds, out, indent);
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| 383 | if (strcmp(ENGINE_get_id(e), id) != 0) {
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| 384 | BIO_printf(out, "Loaded: (%s) %s\n",
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| 385 | ENGINE_get_id(e), ENGINE_get_name(e));
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| 386 | }
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| 387 | if (list_cap) {
|
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| 388 | int cap_size = 256;
|
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| 389 | char *cap_buf = NULL;
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| 390 | int k, n;
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| 391 | const int *nids;
|
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| 392 | ENGINE_CIPHERS_PTR fn_c;
|
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| 393 | ENGINE_DIGESTS_PTR fn_d;
|
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| 394 | ENGINE_PKEY_METHS_PTR fn_pk;
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| 395 |
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| 396 | if (ENGINE_get_RSA(e) != NULL
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| 397 | && !append_buf(&cap_buf, &cap_size, "RSA"))
|
|---|
| 398 | goto end;
|
|---|
| 399 | if (ENGINE_get_DSA(e) != NULL
|
|---|
| 400 | && !append_buf(&cap_buf, &cap_size, "DSA"))
|
|---|
| 401 | goto end;
|
|---|
| 402 | if (ENGINE_get_DH(e) != NULL
|
|---|
| 403 | && !append_buf(&cap_buf, &cap_size, "DH"))
|
|---|
| 404 | goto end;
|
|---|
| 405 | if (ENGINE_get_RAND(e) != NULL
|
|---|
| 406 | && !append_buf(&cap_buf, &cap_size, "RAND"))
|
|---|
| 407 | goto end;
|
|---|
| 408 |
|
|---|
| 409 | fn_c = ENGINE_get_ciphers(e);
|
|---|
| 410 | if (fn_c == NULL)
|
|---|
| 411 | goto skip_ciphers;
|
|---|
| 412 | n = fn_c(e, NULL, &nids, 0);
|
|---|
| 413 | for (k = 0; k < n; ++k)
|
|---|
| 414 | if (!append_buf(&cap_buf, &cap_size, OBJ_nid2sn(nids[k])))
|
|---|
| 415 | goto end;
|
|---|
| 416 |
|
|---|
| 417 | skip_ciphers:
|
|---|
| 418 | fn_d = ENGINE_get_digests(e);
|
|---|
| 419 | if (fn_d == NULL)
|
|---|
| 420 | goto skip_digests;
|
|---|
| 421 | n = fn_d(e, NULL, &nids, 0);
|
|---|
| 422 | for (k = 0; k < n; ++k)
|
|---|
| 423 | if (!append_buf(&cap_buf, &cap_size, OBJ_nid2sn(nids[k])))
|
|---|
| 424 | goto end;
|
|---|
| 425 |
|
|---|
| 426 | skip_digests:
|
|---|
| 427 | fn_pk = ENGINE_get_pkey_meths(e);
|
|---|
| 428 | if (fn_pk == NULL)
|
|---|
| 429 | goto skip_pmeths;
|
|---|
| 430 | n = fn_pk(e, NULL, &nids, 0);
|
|---|
| 431 | for (k = 0; k < n; ++k)
|
|---|
| 432 | if (!append_buf(&cap_buf, &cap_size, OBJ_nid2sn(nids[k])))
|
|---|
| 433 | goto end;
|
|---|
| 434 | skip_pmeths:
|
|---|
| 435 | {
|
|---|
| 436 | struct util_store_cap_data store_ctx;
|
|---|
| 437 |
|
|---|
| 438 | store_ctx.engine = e;
|
|---|
| 439 | store_ctx.cap_buf = &cap_buf;
|
|---|
| 440 | store_ctx.cap_size = &cap_size;
|
|---|
| 441 | store_ctx.ok = 1;
|
|---|
| 442 |
|
|---|
| 443 | OSSL_STORE_do_all_loaders(util_store_cap, &store_ctx);
|
|---|
| 444 | if (!store_ctx.ok)
|
|---|
| 445 | goto end;
|
|---|
| 446 | }
|
|---|
| 447 | if (cap_buf != NULL && (*cap_buf != '\0'))
|
|---|
| 448 | BIO_printf(out, " [%s]\n", cap_buf);
|
|---|
| 449 |
|
|---|
| 450 | OPENSSL_free(cap_buf);
|
|---|
| 451 | }
|
|---|
| 452 | if (test_avail) {
|
|---|
| 453 | BIO_printf(out, "%s", indent);
|
|---|
| 454 | if (ENGINE_init(e)) {
|
|---|
| 455 | BIO_printf(out, "[ available ]\n");
|
|---|
| 456 | util_do_cmds(e, post_cmds, out, indent);
|
|---|
| 457 | ENGINE_finish(e);
|
|---|
| 458 | } else {
|
|---|
| 459 | BIO_printf(out, "[ unavailable ]\n");
|
|---|
| 460 | if (test_avail_noise)
|
|---|
| 461 | ERR_print_errors_fp(stdout);
|
|---|
| 462 | ERR_clear_error();
|
|---|
| 463 | }
|
|---|
| 464 | }
|
|---|
| 465 | if ((verbose > 0) && !util_verbose(e, verbose, out, indent))
|
|---|
| 466 | goto end;
|
|---|
| 467 | ENGINE_free(e);
|
|---|
| 468 | } else {
|
|---|
| 469 | ERR_print_errors(bio_err);
|
|---|
| 470 | /* because exit codes above 127 have special meaning on Unix */
|
|---|
| 471 | if (++ret > 127)
|
|---|
| 472 | ret = 127;
|
|---|
| 473 | }
|
|---|
| 474 | }
|
|---|
| 475 |
|
|---|
| 476 | end:
|
|---|
| 477 |
|
|---|
| 478 | ERR_print_errors(bio_err);
|
|---|
| 479 | sk_OPENSSL_CSTRING_free(engines);
|
|---|
| 480 | sk_OPENSSL_STRING_free(pre_cmds);
|
|---|
| 481 | sk_OPENSSL_STRING_free(post_cmds);
|
|---|
| 482 | BIO_free_all(out);
|
|---|
| 483 | return ret;
|
|---|
| 484 | }
|
|---|
