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 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, OPENSSL_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, OPENSSL_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
  62             else
  63                 ok = (X509_load_cert_crl_file_ex(
  64                          ctx, X509_get_default_cert_file(),
  65                          X509_FILETYPE_PEM, libctx, propq) != 0);
  66
  67             if (!ok) {
  68                 X509err(0, X509_R_LOADING_DEFAULTS);
  69             }
  70         } else {
  71             if (argl == X509_FILETYPE_PEM)
  72                 ok = (X509_load_cert_crl_file_ex(ctx, argp, X509_FILETYPE_PEM,
  73                                                  libctx, propq) != 0);
  74             else
  75                 ok = (X509_load_cert_file_ex(ctx, argp, (int)argl, libctx,
  76                                              propq) != 0);
  77         }
  78         break;
  79     }
  80     return ok;
  81 }
  82
  83 static int by_file_ctrl(X509_LOOKUP *ctx, int cmd,
  84                         const char *argp, long argl, char **ret)
  85 {
  86     return by_file_ctrl_ex(ctx, cmd, argp, argl, ret, NULL, NULL);
  87 }
  88
  89 int X509_load_cert_file_ex(X509_LOOKUP *ctx, const char *file, int type,
  90                            OPENSSL_CTX *libctx, const char *propq)
  91 {
  92     int ret = 0;
  93     BIO *in = NULL;
  94     int i, count = 0;
  95     X509 *x = NULL;
  96
  97     in = BIO_new(BIO_s_file());
  98
  99     if ((in == NULL) || (BIO_read_filename(in, file) <= 0)) {
 100         X509err(0, ERR_R_SYS_LIB);
 101         goto err;
 102     }
 103
 104     if (type != X509_FILETYPE_PEM && type != X509_FILETYPE_ASN1) {
 105         X509err(0, X509_R_BAD_X509_FILETYPE);
 106         goto err;
 107     }
 108     x = X509_new_ex(libctx, propq);
 109     if (x == NULL) {
 110         X509err(0, ERR_R_MALLOC_FAILURE);
 111         goto err;
 112     }
 113
 114     if (type == X509_FILETYPE_PEM) {
 115         for (;;) {
 116             if (PEM_read_bio_X509_AUX(in, &x, NULL, "") == NULL) {
 117                 if ((ERR_GET_REASON(ERR_peek_last_error()) ==
 118                      PEM_R_NO_START_LINE) && (count > 0)) {
 119                     ERR_clear_error();
 120                     break;
 121                 } else {
 122                     X509err(0, ERR_R_PEM_LIB);
 123                     goto err;
 124                 }
 125             }
 126             i = X509_STORE_add_cert(ctx->store_ctx, x);
 127             if (!i)
 128                 goto err;
 129             count++;
 130             X509_free(x);
 131             x = NULL;
 132         }
 133         ret = count;
 134     } else if (type == X509_FILETYPE_ASN1) {
 135         if (d2i_X509_bio(in, &x) == NULL) {
 136             X509err(0, ERR_R_ASN1_LIB);
 137             goto err;
 138         }
 139         i = X509_STORE_add_cert(ctx->store_ctx, x);
 140         if (!i)
 141             goto err;
 142         ret = i;
 143     }
 144     if (ret == 0)
 145         X509err(0, X509_R_NO_CERTIFICATE_FOUND);
 146  err:
 147     X509_free(x);
 148     BIO_free(in);
 149     return ret;
 150 }
 151
 152 int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type)
 153 {
 154     return X509_load_cert_file_ex(ctx, file, type, NULL, NULL);
 155 }
 156
 157 int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type)
 158 {
 159     int ret = 0;
 160     BIO *in = NULL;
 161     int i, count = 0;
 162     X509_CRL *x = NULL;
 163
 164     in = BIO_new(BIO_s_file());
 165
 166     if ((in == NULL) || (BIO_read_filename(in, file) <= 0)) {
 167         X509err(X509_F_X509_LOAD_CRL_FILE, ERR_R_SYS_LIB);
 168         goto err;
 169     }
 170
 171     if (type == X509_FILETYPE_PEM) {
 172         for (;;) {
 173             x = PEM_read_bio_X509_CRL(in, NULL, NULL, "");
 174             if (x == NULL) {
 175                 if ((ERR_GET_REASON(ERR_peek_last_error()) ==
 176                      PEM_R_NO_START_LINE) && (count > 0)) {
 177                     ERR_clear_error();
 178                     break;
 179                 } else {
 180                     X509err(X509_F_X509_LOAD_CRL_FILE, ERR_R_PEM_LIB);
 181                     goto err;
 182                 }
 183             }
 184             i = X509_STORE_add_crl(ctx->store_ctx, x);
 185             if (!i)
 186                 goto err;
 187             count++;
 188             X509_CRL_free(x);
 189             x = NULL;
 190         }
 191         ret = count;
 192     } else if (type == X509_FILETYPE_ASN1) {
 193         x = d2i_X509_CRL_bio(in, NULL);
 194         if (x == NULL) {
 195             X509err(X509_F_X509_LOAD_CRL_FILE, ERR_R_ASN1_LIB);
 196             goto err;
 197         }
 198         i = X509_STORE_add_crl(ctx->store_ctx, x);
 199         if (!i)
 200             goto err;
 201         ret = i;
 202     } else {
 203         X509err(X509_F_X509_LOAD_CRL_FILE, X509_R_BAD_X509_FILETYPE);
 204         goto err;
 205     }
 206     if (ret == 0)
 207         X509err(X509_F_X509_LOAD_CRL_FILE, X509_R_NO_CRL_FOUND);
 208  err:
 209     X509_CRL_free(x);
 210     BIO_free(in);
 211     return ret;
 212 }
 213
 214 int X509_load_cert_crl_file_ex(X509_LOOKUP *ctx, const char *file, int type,
 215                                OPENSSL_CTX *libctx, const char *propq)
 216 {
 217     STACK_OF(X509_INFO) *inf;
 218     X509_INFO *itmp;
 219     BIO *in;
 220     int i, count = 0;
 221
 222     if (type != X509_FILETYPE_PEM)
 223         return X509_load_cert_file_ex(ctx, file, type, libctx, propq);
 224     in = BIO_new_file(file, "r");
 225     if (!in) {
 226         X509err(0, ERR_R_SYS_LIB);
 227         return 0;
 228     }
 229     inf = PEM_X509_INFO_read_bio_ex(in, NULL, NULL, "", libctx, propq);
 230     BIO_free(in);
 231     if (!inf) {
 232         X509err(0, ERR_R_PEM_LIB);
 233         return 0;
 234     }
 235     for (i = 0; i < sk_X509_INFO_num(inf); i++) {
 236         itmp = sk_X509_INFO_value(inf, i);
 237         if (itmp->x509) {
 238             if (!X509_STORE_add_cert(ctx->store_ctx, itmp->x509))
 239                 goto err;
 240             count++;
 241         }
 242         if (itmp->crl) {
 243             if (!X509_STORE_add_crl(ctx->store_ctx, itmp->crl))
 244                 goto err;
 245             count++;
 246         }
 247     }
 248     if (count == 0)
 249         X509err(0, X509_R_NO_CERTIFICATE_OR_CRL_FOUND);
 250  err:
 251     sk_X509_INFO_pop_free(inf, X509_INFO_free);
 252     return count;
 253 }
 254
 255 int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type)
 256 {
 257     return X509_load_cert_crl_file_ex(ctx, file, type, NULL, NULL);
 258 }
 259