1 /* 2 * Copyright 2006-2016 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 #include <stdio.h> 11 #include <string.h> 12 #include "apps.h" 13 #include <openssl/pem.h> 14 #include <openssl/err.h> 15 #include <openssl/evp.h> 16 17 typedef enum OPTION_choice { 18 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, 19 OPT_IN, OPT_OUT, OPT_TEXT, OPT_NOOUT, OPT_ENGINE 20 } OPTION_CHOICE; 21 22 OPTIONS pkeyparam_options[] = { 23 {"help", OPT_HELP, '-', "Display this summary"}, 24 {"in", OPT_IN, '<', "Input file"}, 25 {"out", OPT_OUT, '>', "Output file"}, 26 {"text", OPT_TEXT, '-', "Print parameters as text"}, 27 {"noout", OPT_NOOUT, '-', "Don't output encoded parameters"}, 28 #ifndef OPENSSL_NO_ENGINE 29 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, 30 #endif 31 {NULL} 32 }; 33 34 int pkeyparam_main(int argc, char **argv) 35 { 36 ENGINE *e = NULL; 37 BIO *in = NULL, *out = NULL; 38 EVP_PKEY *pkey = NULL; 39 int text = 0, noout = 0, ret = 1; 40 OPTION_CHOICE o; 41 char *infile = NULL, *outfile = NULL, *prog; 42 43 prog = opt_init(argc, argv, pkeyparam_options); 44 while ((o = opt_next()) != OPT_EOF) { 45 switch (o) { 46 case OPT_EOF: 47 case OPT_ERR: 48 opthelp: 49 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); 50 goto end; 51 case OPT_HELP: 52 opt_help(pkeyparam_options); 53 ret = 0; 54 goto end; 55 case OPT_IN: 56 infile = opt_arg(); 57 break; 58 case OPT_OUT: 59 outfile = opt_arg(); 60 break; 61 case OPT_ENGINE: 62 e = setup_engine(opt_arg(), 0); 63 break; 64 case OPT_TEXT: 65 text = 1; 66 break; 67 case OPT_NOOUT: 68 noout = 1; 69 break; 70 } 71 } 72 argc = opt_num_rest(); 73 if (argc != 0) 74 goto opthelp; 75 76 in = bio_open_default(infile, 'r', FORMAT_PEM); 77 if (in == NULL) 78 goto end; 79 out = bio_open_default(outfile, 'w', FORMAT_PEM); 80 if (out == NULL) 81 goto end; 82 pkey = PEM_read_bio_Parameters(in, NULL); 83 if (!pkey) { 84 BIO_printf(bio_err, "Error reading parameters\n"); 85 ERR_print_errors(bio_err); 86 goto end; 87 } 88 89 if (!noout) 90 PEM_write_bio_Parameters(out, pkey); 91 92 if (text) 93 EVP_PKEY_print_params(out, pkey, 0, NULL); 94 95 ret = 0; 96 97 end: 98 EVP_PKEY_free(pkey); 99 release_engine(e); 100 BIO_free_all(out); 101 BIO_free(in); 102 103 return ret; 104 } 105