crypto/x509/by_file.c

   1 /*
   2  * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (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 <time.h>
  12 #include <errno.h>
  13
  14 #include "internal/cryptlib.h"
  15 #include <openssl/buffer.h>
  16 #include <openssl/x509.h>
  17 #include <openssl/pem.h>
  18 #include "x509_local.h"
  19
  20 static int by_file_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
  21                         long argl, char **ret);
  22 static int by_file_ctrl_ex(X509_LOOKUP *ctx, int cmd, const char *argc,
  23                            long argl, char **ret, OSSL_LIB_CTX *libctx,
  24                            const char *propq);
  25
  26
  27 static X509_LOOKUP_METHOD x509_file_lookup = {
  28     "Load file into cache",
  29     NULL,                       /* new_item */
  30     NULL,                       /* free */
  31     NULL,                       /* init */
  32     NULL,                       /* shutdown */
  33     by_file_ctrl,               /* ctrl */
  34     NULL,                       /* get_by_subject */
  35     NULL,                       /* get_by_issuer_serial */
  36     NULL,                       /* get_by_fingerprint */
  37     NULL,                       /* get_by_alias */
  38     NULL,                       /* get_by_subject_ex */
  39     by_file_ctrl_ex,            /* ctrl_ex */
  40 };
  41
  42 X509_LOOKUP_METHOD *X509_LOOKUP_file(void)
  43 {
  44     return &x509_file_lookup;
  45 }
  46
  47 static int by_file_ctrl_ex(X509_LOOKUP *ctx, int cmd, const char *argp,
  48                            long argl, char **ret, OSSL_LIB_CTX *libctx,
  49                            const char *propq)
  50 {
  51     int ok = 0;
  52     const char *file;
  53
  54     switch (cmd) {
  55     case X509_L_FILE_LOAD:
  56         if (argl == X509_FILETYPE_DEFAULT) {
  57             file = ossl_safe_getenv(X509_get_default_cert_file_env());
  58             if (file)
  59                 ok = (X509_load_cert_crl_file_ex(ctx, file, X509_FILETYPE_PEM,
  60                                                  libctx, propq) != 0);
  61             else
  62                 ok = (X509_load_cert_crl_file_ex(
  63                          ctx, X509_get_default_cert_file(),
  64                          X509_FILETYPE_PEM, libctx, propq) != 0);
  65
  66             if (!ok)
  67                 ERR_raise(ERR_LIB_X509, X509_R_LOADING_DEFAULTS);
  68         } else {
  69             if (argl == X509_FILETYPE_PEM)
  70                 ok = (X509_load_cert_crl_file_ex(ctx, argp, X509_FILETYPE_PEM,
  71                                                  libctx, propq) != 0);
  72             else
  73                 ok = (X509_load_cert_file_ex(ctx, argp, (int)argl, libctx,
  74                                              propq) != 0);
  75         }
  76         break;
  77     }
  78     return ok;
  79 }
  80
  81 static int by_file_ctrl(X509_LOOKUP *ctx, int cmd,
  82                         const char *argp, long argl, char **ret)
  83 {
  84     return by_file_ctrl_ex(ctx, cmd, argp, argl, ret, NULL, NULL);
  85 }
  86
  87 int X509_load_cert_file_ex(X509_LOOKUP *ctx, const char *file, int type,
  88                            OSSL_LIB_CTX *libctx, const char *propq)
  89 {
  90     BIO *in = NULL;
  91     int count = 0;
  92     X509 *x = NULL;
  93
  94     in = BIO_new(BIO_s_file());
  95
  96     if ((in == NULL) || (BIO_read_filename(in, file) <= 0)) {
  97         ERR_raise(ERR_LIB_X509, ERR_R_BIO_LIB);
  98         goto err;
  99     }
 100
 101     x = X509_new_ex(libctx, propq);
 102     if (x == NULL) {
 103         ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
 104         goto err;
 105     }
 106
 107     if (type == X509_FILETYPE_PEM) {
 108         for (;;) {
 109             ERR_set_mark();
 110             if (PEM_read_bio_X509_AUX(in, &x, NULL, "") == NULL) {
 111                 if ((ERR_GET_REASON(ERR_peek_last_error()) ==
 112                      PEM_R_NO_START_LINE) && (count > 0)) {
 113                     ERR_pop_to_mark();
 114                     break;
 115                 } else {
 116                     ERR_clear_last_mark();
 117                     if (count == 0) {
 118                         ERR_raise(ERR_LIB_X509, X509_R_NO_CERTIFICATE_FOUND);
 119                     } else {
 120                         ERR_raise(ERR_LIB_X509, ERR_R_PEM_LIB);
 121                         count = 0;
 122                     }
 123                     goto err;
 124                 }
 125             }
 126             ERR_clear_last_mark();
 127             if (!X509_STORE_add_cert(ctx->store_ctx, x)) {
 128                 count = 0;
 129                 goto err;
 130             }
 131             /*
 132              * X509_STORE_add_cert() added a reference rather than a copy,
 133              * so we need a fresh X509 object.
 134              */
 135             X509_free(x);
 136             x = X509_new_ex(libctx, propq);
 137             if (x == NULL) {
 138                 ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
 139                 count = 0;
 140                 goto err;
 141             }
 142             count++;
 143         }
 144     } else if (type == X509_FILETYPE_ASN1) {
 145         if (d2i_X509_bio(in, &x) == NULL) {
 146             ERR_raise(ERR_LIB_X509, X509_R_NO_CERTIFICATE_FOUND);
 147             goto err;
 148         }
 149         count = X509_STORE_add_cert(ctx->store_ctx, x);
 150     } else {
 151         ERR_raise(ERR_LIB_X509, X509_R_BAD_X509_FILETYPE);
 152         goto err;
 153     }
 154  err:
 155     X509_free(x);
 156     BIO_free(in);
 157     return count;
 158 }
 159
 160 int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type)
 161 {
 162     return X509_load_cert_file_ex(ctx, file, type, NULL, NULL);
 163 }
 164
 165 int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type)
 166 {
 167     BIO *in = NULL;
 168     int count = 0;
 169     X509_CRL *x = NULL;
 170
 171     in = BIO_new(BIO_s_file());
 172
 173     if ((in == NULL) || (BIO_read_filename(in, file) <= 0)) {
 174         ERR_raise(ERR_LIB_X509, ERR_R_BIO_LIB);
 175         goto err;
 176     }
 177
 178     if (type == X509_FILETYPE_PEM) {
 179         for (;;) {
 180             x = PEM_read_bio_X509_CRL(in, NULL, NULL, "");
 181             if (x == NULL) {
 182                 if ((ERR_GET_REASON(ERR_peek_last_error()) ==
 183                      PEM_R_NO_START_LINE) && (count > 0)) {
 184                     ERR_clear_error();
 185                     break;
 186                 } else {
 187                     if (count == 0) {
 188                         ERR_raise(ERR_LIB_X509, X509_R_NO_CRL_FOUND);
 189                     } else {
 190                         ERR_raise(ERR_LIB_X509, ERR_R_PEM_LIB);
 191                         count = 0;
 192                     }
 193                     goto err;
 194                 }
 195             }
 196             if (!X509_STORE_add_crl(ctx->store_ctx, x)) {
 197                 count = 0;
 198                 goto err;
 199             }
 200             count++;
 201             X509_CRL_free(x);
 202             x = NULL;
 203         }
 204     } else if (type == X509_FILETYPE_ASN1) {
 205         x = d2i_X509_CRL_bio(in, NULL);
 206         if (x == NULL) {
 207             ERR_raise(ERR_LIB_X509, X509_R_NO_CRL_FOUND);
 208             goto err;
 209         }
 210         count = X509_STORE_add_crl(ctx->store_ctx, x);
 211     } else {
 212         ERR_raise(ERR_LIB_X509, X509_R_BAD_X509_FILETYPE);
 213         goto err;
 214     }
 215  err:
 216     X509_CRL_free(x);
 217     BIO_free(in);
 218     return count;
 219 }
 220
 221 int X509_load_cert_crl_file_ex(X509_LOOKUP *ctx, const char *file, int type,
 222                                OSSL_LIB_CTX *libctx, const char *propq)
 223 {
 224     STACK_OF(X509_INFO) *inf = NULL;
 225     X509_INFO *itmp = NULL;
 226     BIO *in = NULL;
 227     int i, count = 0;
 228
 229     if (type != X509_FILETYPE_PEM)
 230         return X509_load_cert_file_ex(ctx, file, type, libctx, propq);
 231     in = BIO_new_file(file, "r");
 232     if (in == NULL) {
 233         ERR_raise(ERR_LIB_X509, ERR_R_BIO_LIB);
 234         return 0;
 235     }
 236     inf = PEM_X509_INFO_read_bio_ex(in, NULL, NULL, "", libctx, propq);
 237     BIO_free(in);
 238     if (inf == NULL) {
 239         ERR_raise(ERR_LIB_X509, ERR_R_PEM_LIB);
 240         return 0;
 241     }
 242     for (i = 0; i < sk_X509_INFO_num(inf); i++) {
 243         itmp = sk_X509_INFO_value(inf, i);
 244         if (itmp->x509) {
 245             if (!X509_STORE_add_cert(ctx->store_ctx, itmp->x509)) {
 246                 count = 0;
 247                 goto err;
 248             }
 249             count++;
 250         }
 251         if (itmp->crl) {
 252             if (!X509_STORE_add_crl(ctx->store_ctx, itmp->crl)) {
 253                 count = 0;
 254                 goto err;
 255             }
 256             count++;
 257         }
 258     }
 259     if (count == 0)
 260         ERR_raise(ERR_LIB_X509, X509_R_NO_CERTIFICATE_OR_CRL_FOUND);
 261  err:
 262     sk_X509_INFO_pop_free(inf, X509_INFO_free);
 263     return count;
 264 }
 265
 266 int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type)
 267 {
 268     return X509_load_cert_crl_file_ex(ctx, file, type, NULL, NULL);
 269 }
 270