crypto/x509/by_file.c

   1 /*
   2  * Copyright 1995-2020 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 DEFINE_STACK_OF(X509_INFO)
  21
  22 static int by_file_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
  23                         long argl, char **ret);
  24 static int by_file_ctrl_with_libctx(X509_LOOKUP *ctx, int cmd,
  25                                     const char *argc, long argl, char **ret,
  26                                     OPENSSL_CTX *libctx, const char *propq);
  27
  28
  29 static X509_LOOKUP_METHOD x509_file_lookup = {
  30     "Load file into cache",
  31     NULL,                       /* new_item */
  32     NULL,                       /* free */
  33     NULL,                       /* init */
  34     NULL,                       /* shutdown */
  35     by_file_ctrl,               /* ctrl */
  36     NULL,                       /* get_by_subject */
  37     NULL,                       /* get_by_issuer_serial */
  38     NULL,                       /* get_by_fingerprint */
  39     NULL,                       /* get_by_alias */
  40     NULL,                       /* get_by_subject_with_libctx */
  41     by_file_ctrl_with_libctx,   /* ctrl_with_libctx */
  42 };
  43
  44 X509_LOOKUP_METHOD *X509_LOOKUP_file(void)
  45 {
  46     return &x509_file_lookup;
  47 }
  48
  49 static int by_file_ctrl_with_libctx(X509_LOOKUP *ctx, int cmd,
  50                                     const char *argp, long argl, char **ret,
  51                                     OPENSSL_CTX *libctx, const char *propq)
  52 {
  53     int ok = 0;
  54     const char *file;
  55
  56     switch (cmd) {
  57     case X509_L_FILE_LOAD:
  58         if (argl == X509_FILETYPE_DEFAULT) {
  59             file = ossl_safe_getenv(X509_get_default_cert_file_env());
  60             if (file)
  61                 ok = (X509_load_cert_crl_file_with_libctx(ctx, file,
  62                                                           X509_FILETYPE_PEM,
  63                                                           libctx, propq) != 0);
  64
  65             else
  66                 ok = (X509_load_cert_crl_file_with_libctx(
  67                          ctx, X509_get_default_cert_file(),
  68                          X509_FILETYPE_PEM, libctx, propq) != 0);
  69
  70             if (!ok) {
  71                 X509err(0, X509_R_LOADING_DEFAULTS);
  72             }
  73         } else {
  74             if (argl == X509_FILETYPE_PEM)
  75                 ok = (X509_load_cert_crl_file_with_libctx(ctx, argp,
  76                                                           X509_FILETYPE_PEM,
  77                                                           libctx, propq) != 0);
  78             else
  79                 ok = (X509_load_cert_file_with_libctx(ctx, argp, (int)argl,
  80                                                       libctx, propq) != 0);
  81         }
  82         break;
  83     }
  84     return ok;
  85 }
  86
  87 static int by_file_ctrl(X509_LOOKUP *ctx, int cmd,
  88                         const char *argp, long argl, char **ret)
  89 {
  90     return by_file_ctrl_with_libctx(ctx, cmd, argp, argl, ret, NULL, NULL);
  91 }
  92
  93 int X509_load_cert_file_with_libctx(X509_LOOKUP *ctx, const char *file, int type,
  94                                     OPENSSL_CTX *libctx, const char *propq)
  95 {
  96     int ret = 0;
  97     BIO *in = NULL;
  98     int i, count = 0;
  99     X509 *x = NULL;
 100
 101     in = BIO_new(BIO_s_file());
 102
 103     if ((in == NULL) || (BIO_read_filename(in, file) <= 0)) {
 104         X509err(0, ERR_R_SYS_LIB);
 105         goto err;
 106     }
 107
 108     if (type != X509_FILETYPE_PEM && type != X509_FILETYPE_ASN1) {
 109         X509err(0, X509_R_BAD_X509_FILETYPE);
 110         goto err;
 111     }
 112     x = X509_new_with_libctx(libctx, propq);
 113     if (x == NULL) {
 114         X509err(0, ERR_R_MALLOC_FAILURE);
 115         goto err;
 116     }
 117
 118     if (type == X509_FILETYPE_PEM) {
 119         for (;;) {
 120             if (PEM_read_bio_X509_AUX(in, &x, NULL, "") == NULL) {
 121                 if ((ERR_GET_REASON(ERR_peek_last_error()) ==
 122                      PEM_R_NO_START_LINE) && (count > 0)) {
 123                     ERR_clear_error();
 124                     break;
 125                 } else {
 126                     X509err(0, ERR_R_PEM_LIB);
 127                     goto err;
 128                 }
 129             }
 130             i = X509_STORE_add_cert(ctx->store_ctx, x);
 131             if (!i)
 132                 goto err;
 133             count++;
 134             X509_free(x);
 135             x = NULL;
 136         }
 137         ret = count;
 138     } else if (type == X509_FILETYPE_ASN1) {
 139         if (d2i_X509_bio(in, &x) == NULL) {
 140             X509err(0, ERR_R_ASN1_LIB);
 141             goto err;
 142         }
 143         i = X509_STORE_add_cert(ctx->store_ctx, x);
 144         if (!i)
 145             goto err;
 146         ret = i;
 147     }
 148     if (ret == 0)
 149         X509err(0, X509_R_NO_CERTIFICATE_FOUND);
 150  err:
 151     X509_free(x);
 152     BIO_free(in);
 153     return ret;
 154 }
 155
 156 int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type)
 157 {
 158     return X509_load_cert_file_with_libctx(ctx, file, type, NULL, NULL);
 159 }
 160
 161 int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type)
 162 {
 163     int ret = 0;
 164     BIO *in = NULL;
 165     int i, count = 0;
 166     X509_CRL *x = NULL;
 167
 168     in = BIO_new(BIO_s_file());
 169
 170     if ((in == NULL) || (BIO_read_filename(in, file) <= 0)) {
 171         X509err(X509_F_X509_LOAD_CRL_FILE, ERR_R_SYS_LIB);
 172         goto err;
 173     }
 174
 175     if (type == X509_FILETYPE_PEM) {
 176         for (;;) {
 177             x = PEM_read_bio_X509_CRL(in, NULL, NULL, "");
 178             if (x == NULL) {
 179                 if ((ERR_GET_REASON(ERR_peek_last_error()) ==
 180                      PEM_R_NO_START_LINE) && (count > 0)) {
 181                     ERR_clear_error();
 182                     break;
 183                 } else {
 184                     X509err(X509_F_X509_LOAD_CRL_FILE, ERR_R_PEM_LIB);
 185                     goto err;
 186                 }
 187             }
 188             i = X509_STORE_add_crl(ctx->store_ctx, x);
 189             if (!i)
 190                 goto err;
 191             count++;
 192             X509_CRL_free(x);
 193             x = NULL;
 194         }
 195         ret = count;
 196     } else if (type == X509_FILETYPE_ASN1) {
 197         x = d2i_X509_CRL_bio(in, NULL);
 198         if (x == NULL) {
 199             X509err(X509_F_X509_LOAD_CRL_FILE, ERR_R_ASN1_LIB);
 200             goto err;
 201         }
 202         i = X509_STORE_add_crl(ctx->store_ctx, x);
 203         if (!i)
 204             goto err;
 205         ret = i;
 206     } else {
 207         X509err(X509_F_X509_LOAD_CRL_FILE, X509_R_BAD_X509_FILETYPE);
 208         goto err;
 209     }
 210     if (ret == 0)
 211         X509err(X509_F_X509_LOAD_CRL_FILE, X509_R_NO_CRL_FOUND);
 212  err:
 213     X509_CRL_free(x);
 214     BIO_free(in);
 215     return ret;
 216 }
 217
 218 int X509_load_cert_crl_file_with_libctx(X509_LOOKUP *ctx, const char *file,
 219                                         int type, OPENSSL_CTX *libctx,
 220                                         const char *propq)
 221 {
 222     STACK_OF(X509_INFO) *inf;
 223     X509_INFO *itmp;
 224     BIO *in;
 225     int i, count = 0;
 226
 227     if (type != X509_FILETYPE_PEM)
 228         return X509_load_cert_file_with_libctx(ctx, file, type, libctx, propq);
 229     in = BIO_new_file(file, "r");
 230     if (!in) {
 231         X509err(0, ERR_R_SYS_LIB);
 232         return 0;
 233     }
 234     inf = PEM_X509_INFO_read_bio_with_libctx(in, NULL, NULL, "", libctx, propq);
 235     BIO_free(in);
 236     if (!inf) {
 237         X509err(0, ERR_R_PEM_LIB);
 238         return 0;
 239     }
 240     for (i = 0; i < sk_X509_INFO_num(inf); i++) {
 241         itmp = sk_X509_INFO_value(inf, i);
 242         if (itmp->x509) {
 243             if (!X509_STORE_add_cert(ctx->store_ctx, itmp->x509))
 244                 goto err;
 245             count++;
 246         }
 247         if (itmp->crl) {
 248             if (!X509_STORE_add_crl(ctx->store_ctx, itmp->crl))
 249                 goto err;
 250             count++;
 251         }
 252     }
 253     if (count == 0)
 254         X509err(0, X509_R_NO_CERTIFICATE_OR_CRL_FOUND);
 255  err:
 256     sk_X509_INFO_pop_free(inf, X509_INFO_free);
 257     return count;
 258 }
 259
 260 int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type)
 261 {
 262     return X509_load_cert_crl_file_with_libctx(ctx, file, type, NULL, NULL);
 263 }
 264