thodg/libgit2/src/openssl_stream.h

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• Hash : 0c7f49dd
  Author :
  Date : 2017-06-30T13:39:01
  

  Make sure to always include "common.h" first Next to including several files, our "common.h" header also declares various macros which are then used throughout the project. As such, we have to make sure to always include this file first in all implementation files. Otherwise, we might encounter problems or even silent behavioural differences due to macros or defines not being defined as they should be. So in fact, our header and implementation files should make sure to always include "common.h" first. This commit does so by establishing a common include pattern. Header files inside of "src" will now always include "common.h" as its first other file, separated by a newline from all the other includes to make it stand out as special. There are two cases for the implementation files. If they do have a matching header file, they will always include this one first, leading to "common.h" being transitively included as first file. If they do not have a matching header file, they instead include "common.h" as first file themselves. This fixes the outlined problems and will become our standard practice for header and source files inside of the "src/" from now on.

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• src/openssl_stream.h

• /*
   * Copyright (C) the libgit2 contributors. All rights reserved.
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  #ifndef INCLUDE_openssl_stream_h__
  #define INCLUDE_openssl_stream_h__
  
  #include "common.h"
  
  #include "git2/sys/stream.h"
  
  extern int git_openssl_stream_global_init(void);
  
  extern int git_openssl_stream_new(git_stream **out, const char *host, const char *port);
  
  /*
   * OpenSSL 1.1 made BIO opaque so we have to use functions to interact with it
   * which do not exist in previous versions. We define these inline functions so
   * we can program against the interface instead of littering the implementation
   * with ifdefs.
   */
  #ifdef GIT_OPENSSL
  # include <openssl/ssl.h>
  # include <openssl/err.h>
  # include <openssl/x509v3.h>
  # include <openssl/bio.h>
  
  
  
  # if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
  
  GIT_INLINE(BIO_METHOD*) BIO_meth_new(int type, const char *name)
  {
  	BIO_METHOD *meth = git__calloc(1, sizeof(BIO_METHOD));
  	if (!meth) {
  		return NULL;
  	}
  
  	meth->type = type;
  	meth->name = name;
  
  	return meth;
  }
  
  GIT_INLINE(void) BIO_meth_free(BIO_METHOD *biom)
  {
  	git__free(biom);
  }
  
  GIT_INLINE(int) BIO_meth_set_write(BIO_METHOD *biom, int (*write) (BIO *, const char *, int))
  {
  	biom->bwrite = write;
  	return 1;
  }
  
  GIT_INLINE(int) BIO_meth_set_read(BIO_METHOD *biom, int (*read) (BIO *, char *, int))
  {
  	biom->bread = read;
  	return 1;
  }
  
  GIT_INLINE(int) BIO_meth_set_puts(BIO_METHOD *biom, int (*puts) (BIO *, const char *))
  {
  	biom->bputs = puts;
  	return 1;
  }
  
  GIT_INLINE(int) BIO_meth_set_gets(BIO_METHOD *biom, int (*gets) (BIO *, char *, int))
  
  {
  	biom->bgets = gets;
  	return 1;
  }
  
  GIT_INLINE(int) BIO_meth_set_ctrl(BIO_METHOD *biom, long (*ctrl) (BIO *, int, long, void *))
  {
  	biom->ctrl = ctrl;
  	return 1;
  }
  
  GIT_INLINE(int) BIO_meth_set_create(BIO_METHOD *biom, int (*create) (BIO *))
  {
  	biom->create = create;
  	return 1;
  }
  
  GIT_INLINE(int) BIO_meth_set_destroy(BIO_METHOD *biom, int (*destroy) (BIO *))
  {
  	biom->destroy = destroy;
  	return 1;
  }
  
  GIT_INLINE(int) BIO_get_new_index(void)
  {
  	/* This exists as of 1.1 so before we'd just have 0 */
  	return 0;
  }
  
  GIT_INLINE(void) BIO_set_init(BIO *b, int init)
  {
  	b->init = init;
  }
  
  GIT_INLINE(void) BIO_set_data(BIO *a, void *ptr)
  {
  	a->ptr = ptr;
  }
  
  GIT_INLINE(void*) BIO_get_data(BIO *a)
  {
  	return a->ptr;
  }
  
  GIT_INLINE(const unsigned char *) ASN1_STRING_get0_data(const ASN1_STRING *x)
  {
  	return ASN1_STRING_data((ASN1_STRING *)x);
  }
  
  # endif // OpenSSL < 1.1
  #endif // GIT_OPENSSL
  
  #endif
  

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