OpenSSL 3.x support

[dktapps]

@bukka I don't know a whole lot about OpenSSL API, would we require significant changes here to support 3.x?

[dktapps]

Looks like it automagically compiles, but there are a bunch of compiler warnings related to HMAC and CMAC:

/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c: In function ‘crypto_hash__free’:
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:235:3: warning: ‘HMAC_CTX_free’ is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
  235 |   HMAC_CTX_free(PHP_CRYPTO_HMAC_CTX(PHPC_THIS));
      |   ^~~~~~~~~~~~~
In file included from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/php_crypto_hash.h:26,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:21:
/home/user/php-build-scripts/bin/php7/include/openssl/hmac.h:35:28: note: declared here
   35 | OSSL_DEPRECATEDIN_3_0 void HMAC_CTX_free(HMAC_CTX *ctx);
      |                            ^~~~~~~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:239:3: warning: ‘CMAC_CTX_free’ is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
  239 |   CMAC_CTX_free(PHP_CRYPTO_CMAC_CTX(PHPC_THIS));
      |   ^~~~~~~~~~~~~
In file included from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/php_crypto_hash.h:28,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:21:
/home/user/php-build-scripts/bin/php7/include/openssl/cmac.h:34:28: note: declared here
   34 | OSSL_DEPRECATEDIN_3_0 void CMAC_CTX_free(CMAC_CTX *ctx);
      |                            ^~~~~~~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c: In function ‘crypto_hash__create_ex’:
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:261:3: warning: ‘HMAC_CTX_new’ is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
  261 |   PHP_CRYPTO_HMAC_CTX(PHPC_THIS) = HMAC_CTX_new();
      |   ^~~~~~~~~~~~~~~~~~~
In file included from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/php_crypto_hash.h:26,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:21:
/home/user/php-build-scripts/bin/php7/include/openssl/hmac.h:33:33: note: declared here
   33 | OSSL_DEPRECATEDIN_3_0 HMAC_CTX *HMAC_CTX_new(void);
      |                                 ^~~~~~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:266:3: warning: ‘CMAC_CTX_new’ is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
  266 |   PHP_CRYPTO_CMAC_CTX(PHPC_THIS) = CMAC_CTX_new();
      |   ^~~~~~~~~~~~~~~~~~~
In file included from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/php_crypto_hash.h:28,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:21:
/home/user/php-build-scripts/bin/php7/include/openssl/cmac.h:32:33: note: declared here
   32 | OSSL_DEPRECATEDIN_3_0 CMAC_CTX *CMAC_CTX_new(void);
      |                                 ^~~~~~~~~~~~

/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c: In function ‘crypto_hash__clone’:
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:304:3: warning: ‘EVP_MD_CTX_md’ is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
  304 |   PHP_CRYPTO_HASH_ALG(PHPC_THAT) = EVP_MD_CTX_md(PHP_CRYPTO_HASH_CTX(PHPC_THIS));
      |   ^~~~~~~~~~~~~~~~~~~
In file included from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/php_crypto.h:45,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:20:
/home/user/php-build-scripts/bin/php7/include/openssl/evp.h:555:15: note: declared here
  555 | const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx);
      |               ^~~~~~~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:306:3: warning: ‘HMAC_CTX_copy’ is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
  306 |   copy_success = HMAC_CTX_copy(
      |   ^~~~~~~~~~~~
In file included from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/php_crypto_hash.h:26,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:21:
/home/user/php-build-scripts/bin/php7/include/openssl/hmac.h:49:34: note: declared here
   49 | OSSL_DEPRECATEDIN_3_0 __owur int HMAC_CTX_copy(HMAC_CTX *dctx, HMAC_CTX *sctx);
      |                                  ^~~~~~~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:311:3: warning: ‘CMAC_CTX_copy’ is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
  311 |   copy_success = CMAC_CTX_copy(
      |   ^~~~~~~~~~~~
In file included from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/php_crypto_hash.h:28,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:21:
/home/user/php-build-scripts/bin/php7/include/openssl/cmac.h:36:27: note: declared here
   36 | OSSL_DEPRECATEDIN_3_0 int CMAC_CTX_copy(CMAC_CTX *out, const CMAC_CTX *in);
      |                           ^~~~~~~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c: In function ‘php_crypto_hash_init’:
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:413:5: warning: ‘HMAC_Init_ex’ is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
  413 |     PHP_CRYPTO_HMAC_DO(rc, HMAC_Init_ex)(
      |     ^~~~~~~~~~~~~~~~~~
In file included from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/php_crypto_hash.h:26,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:21:
/home/user/php-build-scripts/bin/php7/include/openssl/hmac.h:43:27: note: declared here
   43 | OSSL_DEPRECATEDIN_3_0 int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
      |                           ^~~~~~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:421:5: warning: ‘CMAC_Init’ is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
  421 |     rc = CMAC_Init(PHP_CRYPTO_CMAC_CTX(PHPC_THIS),
      |     ^~

In file included from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/php_crypto_hash.h:28,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:21:
/home/user/php-build-scripts/bin/php7/include/openssl/cmac.h:37:27: note: declared here
   37 | OSSL_DEPRECATEDIN_3_0 int CMAC_Init(CMAC_CTX *ctx,
      |                           ^~~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c: In function ‘php_crypto_hash_update’:
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:459:4: warning: ‘HMAC_Update’ is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
  459 |    PHP_CRYPTO_HMAC_DO(rc, HMAC_Update)(
      |    ^~~~~~~~~~~~~~~~~~
In file included from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/php_crypto_hash.h:26,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:21:
/home/user/php-build-scripts/bin/php7/include/openssl/hmac.h:45:27: note: declared here
   45 | OSSL_DEPRECATEDIN_3_0 int HMAC_Update(HMAC_CTX *ctx, const unsigned char *data,
      |                           ^~~~~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:465:4: warning: ‘CMAC_Update’ is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
  465 |    rc = CMAC_Update(PHP_CRYPTO_CMAC_CTX(PHPC_THIS), data, data_len);
      |    ^~
In file included from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/php_crypto_hash.h:28,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:21:
/home/user/php-build-scripts/bin/php7/include/openssl/cmac.h:40:27: note: declared here
   40 | OSSL_DEPRECATEDIN_3_0 int CMAC_Update(CMAC_CTX *ctx,
      |                           ^~~~~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c: In function ‘php_crypto_hash_digest’:
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:509:4: warning: ‘HMAC_Final’ is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
  509 |    PHP_CRYPTO_HMAC_DO(rc, HMAC_Final)(
      |    ^~~~~~~~~~~~~~~~~~
In file included from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/php_crypto_hash.h:26,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:21:
/home/user/php-build-scripts/bin/php7/include/openssl/hmac.h:47:27: note: declared here
   47 | OSSL_DEPRECATEDIN_3_0 int HMAC_Final(HMAC_CTX *ctx, unsigned char *md,
      |                           ^~~~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:514:4: warning: ‘CMAC_Final’ is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
  514 |    rc = CMAC_Final(PHP_CRYPTO_CMAC_CTX(PHPC_THIS), hash_value, &hash_len_size);
      |    ^~
In file included from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/php_crypto_hash.h:28,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_hash.c:21:
/home/user/php-build-scripts/bin/php7/include/openssl/cmac.h:42:27: note: declared here
   42 | OSSL_DEPRECATEDIN_3_0 int CMAC_Final(CMAC_CTX *ctx,
      |                           ^~~~~~~~~~

/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_kdf.c: In function ‘crypto_kdf__clone’:
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_kdf.c:219:12: warning: unused variable ‘copy_success’ [-Wunused-variable]
  219 |  zend_bool copy_success;
      |            ^~~~~~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_kdf.c: In function ‘zim_Crypto__PBKDF2_derive’:
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_kdf.c:494:62: warning: pointer targets in passing argument 3 of ‘PKCS5_PBKDF2_HMAC’ differ in signedness [-Wpointer-sign]
  494 |  if (!PKCS5_PBKDF2_HMAC(password, password_len_int, PHPC_THIS->salt, PHPC_THIS->salt_len,
In file included from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/php_crypto.h:45,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_kdf.c:20:
/home/user/php-build-scripts/bin/php7/include/openssl/evp.h:1488:44: note: expected ‘const unsigned char *’ but argument is of type ‘char *’
 1488 |                       const unsigned char *salt, int saltlen, int iter,
      |                       ~~~~~~~~~~~~~~~~~~~~~^~~~
In file included from /home/user/php-build-scripts/install_data/subdir/php/Zend/zend.h:32,
                 from /home/user/php-build-scripts/install_data/subdir/php/main/php.h:31,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_kdf.c:19:
/home/user/php-build-scripts/install_data/subdir/php/Zend/zend_string.h:66:31: warning: pointer targets in passing argument 8 of ‘PKCS5_PBKDF2_HMAC’ differ in signedness [-Wpointer-sign]
   66 | #define ZSTR_VAL(zstr)  (zstr)->val
      |                         ~~~~~~^~~~~
      |                               |
      |                               char *
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/phpc/phpc.h:870:47: note: in expansion of macro ‘ZSTR_VAL’
  870 | #define PHPC_STR_VAL                          ZSTR_VAL
      |                                               ^~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_kdf.c:496:24: note: in expansion of macro ‘PHPC_STR_VAL’
  496 |    PHPC_THIS->key_len, PHPC_STR_VAL(key))) {
      |                        ^~~~~~~~~~~~
In file included from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/php_crypto.h:45,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_kdf.c:20:
/home/user/php-build-scripts/bin/php7/include/openssl/evp.h:1489:72: note: expected ‘unsigned char *’ but argument is of type ‘char *’
 1489 |                       const EVP_MD *digest, int keylen, unsigned char *out);
      |                                                         ~~~~~~~~~~~~~~~^~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_kdf.c:480:24: warning: unused variable ‘hash_len’ [-Wunused-variable]
  480 |  int password_len_int, hash_len;
      |                        ^~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_stream.c:170:1: warning: ‘inline’ is not at beginning of declaration [-Wold-style-declaration]
  170 | static void inline php_crypto_stream_create_meta_field(
      | ^~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_stream.c:347:2: warning: initialization of ‘ssize_t (*)(php_stream *, const char *, size_t)’ {aka ‘long int (*)(struct _php_stream *, const char *, long unsigned int)’} from incompatible pointer type ‘size_t (*)(php_stream *, const char *, size_t)’ {aka ‘long unsigned int (*)(struct _php_stream *, const char *, long unsigned int)’} [-Wincompatible-pointer-types]
  347 |  php_crypto_stream_write, php_crypto_stream_read,
      |  ^~~~~~~~~~~~~~~~~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_stream.c:347:2: note: (near initialization for ‘php_crypto_stream_ops.write’)
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_stream.c:347:27: warning: initialization of ‘ssize_t (*)(php_stream *, char *, size_t)’ {aka ‘long int (*)(struct _php_stream *, char *, long unsigned int)’} from incompatible pointer type ‘size_t (*)(php_stream *, char *, size_t)’ {aka ‘long unsigned int (*)(struct _php_stream *, char *, long unsigned int)’} [-Wincompatible-pointer-types]
  347 |  php_crypto_stream_write, php_crypto_stream_read,
      |                           ^~~~~~~~~~~~~~~~~~~~~~
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_stream.c:347:27: note: (near initialization for ‘php_crypto_stream_ops.read’)
/home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_stream.c:617:1: warning: missing initializer for field ‘stream_metadata’ of ‘php_stream_wrapper_ops’ {aka ‘struct _php_stream_wrapper_ops’} [-Wmissing-field-initializers]
  617 | };
      | ^
In file included from /home/user/php-build-scripts/install_data/subdir/php/main/php.h:417,
                 from /home/user/php-build-scripts/install_data/subdir/php/ext/crypto/crypto_stream.c:19:
/home/user/php-build-scripts/install_data/subdir/php/main/php_streams.h:156:8: note: ‘stream_metadata’ declared here
  156 |  int (*stream_metadata)(php_stream_wrapper *wrapper, const char *url, int options, void *value, php_stream_context *context);
      |        ^~~~~~~~~~~~~~~

[bukka]

Yeah it should be converted to EVP MAC eventually. There is hopefully still plenty of time to do that as it will stop working in OpenSSL 4.0.