test/shlibloadtest.c - third_party/openssl - Git at Google

 /*
  * Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
  */

 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <openssl/opensslv.h>
 #include <openssl/ssl.h>
 #include <openssl/types.h>
 #include "simpledynamic.h"

 typedef void DSO;

 typedef const SSL_METHOD * (*TLS_method_t)(void);
 typedef SSL_CTX * (*SSL_CTX_new_t)(const SSL_METHOD *meth);
 typedef void (*SSL_CTX_free_t)(SSL_CTX *);
 typedef int (*OPENSSL_init_crypto_t)(uint64_t, void *);
 typedef int (*OPENSSL_atexit_t)(void (*handler)(void));
 typedef unsigned long (*ERR_get_error_t)(void);
 typedef unsigned long (*OPENSSL_version_major_t)(void);
 typedef unsigned long (*OPENSSL_version_minor_t)(void);
 typedef unsigned long (*OPENSSL_version_patch_t)(void);
 typedef DSO * (*DSO_dsobyaddr_t)(void (*addr)(void), int flags);
 typedef int (*DSO_free_t)(DSO *dso);

 typedef enum test_types_en {
     CRYPTO_FIRST,
     SSL_FIRST,
     JUST_CRYPTO,
     DSO_REFTEST,
     NO_ATEXIT
 } TEST_TYPE;

 static TEST_TYPE test_type;
 static const char *path_crypto;
 static const char *path_ssl;
 static const char *path_atexit;

 #ifdef SD_INIT

 static int atexit_handler_done = 0;

 static void atexit_handler(void)
 {
     FILE *atexit_file = fopen(path_atexit, "w");

     if (atexit_file == NULL)
         return;

     fprintf(atexit_file, "atexit() run\n");
     fclose(atexit_file);
     atexit_handler_done++;
 }

 static int test_lib(void)
 {
     SD ssllib = SD_INIT;
     SD cryptolib = SD_INIT;
     SSL_CTX *ctx;
     union {
         void (*func)(void);
         SD_SYM sym;
     } symbols[5];
     TLS_method_t myTLS_method;
     SSL_CTX_new_t mySSL_CTX_new;
     SSL_CTX_free_t mySSL_CTX_free;
     ERR_get_error_t myERR_get_error;
     OPENSSL_version_major_t myOPENSSL_version_major;
     OPENSSL_version_minor_t myOPENSSL_version_minor;
     OPENSSL_version_patch_t myOPENSSL_version_patch;
     OPENSSL_atexit_t myOPENSSL_atexit;
     int result = 0;

     switch (test_type) {
     case JUST_CRYPTO:
     case DSO_REFTEST:
     case NO_ATEXIT:
     case CRYPTO_FIRST:
         if (!sd_load(path_crypto, &cryptolib, SD_SHLIB)) {
             fprintf(stderr, "Failed to load libcrypto\n");
             goto end;
         }
         if (test_type != CRYPTO_FIRST)
             break;
         /* Fall through */

     case SSL_FIRST:
         if (!sd_load(path_ssl, &ssllib, SD_SHLIB)) {
             fprintf(stderr, "Failed to load libssl\n");
             goto end;
         }
         if (test_type != SSL_FIRST)
             break;
         if (!sd_load(path_crypto, &cryptolib, SD_SHLIB)) {
             fprintf(stderr, "Failed to load libcrypto\n");
             goto end;
         }
         break;
     }

     if (test_type == NO_ATEXIT) {
         OPENSSL_init_crypto_t myOPENSSL_init_crypto;

         if (!sd_sym(cryptolib, "OPENSSL_init_crypto", &symbols[0].sym)) {
             fprintf(stderr, "Failed to load OPENSSL_init_crypto symbol\n");
             goto end;
         }
         myOPENSSL_init_crypto = (OPENSSL_init_crypto_t)symbols[0].func;
         if (!myOPENSSL_init_crypto(OPENSSL_INIT_NO_ATEXIT, NULL)) {
             fprintf(stderr, "Failed to initialise libcrypto\n");
             goto end;
         }
     }

     if (test_type != JUST_CRYPTO
             && test_type != DSO_REFTEST
             && test_type != NO_ATEXIT) {
         if (!sd_sym(ssllib, "TLS_method", &symbols[0].sym)
                 || !sd_sym(ssllib, "SSL_CTX_new", &symbols[1].sym)
                 || !sd_sym(ssllib, "SSL_CTX_free", &symbols[2].sym)) {
             fprintf(stderr, "Failed to load libssl symbols\n");
             goto end;
         }
         myTLS_method = (TLS_method_t)symbols[0].func;
         mySSL_CTX_new = (SSL_CTX_new_t)symbols[1].func;
         mySSL_CTX_free = (SSL_CTX_free_t)symbols[2].func;
         ctx = mySSL_CTX_new(myTLS_method());
         if (ctx == NULL) {
             fprintf(stderr, "Failed to create SSL_CTX\n");
             goto end;
         }
         mySSL_CTX_free(ctx);
     }

     if (!sd_sym(cryptolib, "ERR_get_error", &symbols[0].sym)
            || !sd_sym(cryptolib, "OPENSSL_version_major", &symbols[1].sym)
            || !sd_sym(cryptolib, "OPENSSL_version_minor", &symbols[2].sym)
            || !sd_sym(cryptolib, "OPENSSL_version_patch", &symbols[3].sym)
            || !sd_sym(cryptolib, "OPENSSL_atexit", &symbols[4].sym)) {
         fprintf(stderr, "Failed to load libcrypto symbols\n");
         goto end;
     }
     myERR_get_error = (ERR_get_error_t)symbols[0].func;
     if (myERR_get_error() != 0) {
         fprintf(stderr, "Unexpected ERR_get_error() response\n");
         goto end;
     }

     /* Library and header version should be identical in this test */
     myOPENSSL_version_major = (OPENSSL_version_major_t)symbols[1].func;
     myOPENSSL_version_minor = (OPENSSL_version_minor_t)symbols[2].func;
     myOPENSSL_version_patch = (OPENSSL_version_patch_t)symbols[3].func;
     if (myOPENSSL_version_major() != OPENSSL_VERSION_MAJOR
             || myOPENSSL_version_minor() != OPENSSL_VERSION_MINOR
             || myOPENSSL_version_patch() != OPENSSL_VERSION_PATCH) {
         fprintf(stderr, "Invalid library version number\n");
         goto end;
     }

     myOPENSSL_atexit = (OPENSSL_atexit_t)symbols[4].func;
     if (!myOPENSSL_atexit(atexit_handler)) {
         fprintf(stderr, "Failed to register atexit handler\n");
         goto end;
     }

     if (test_type == DSO_REFTEST) {
 # ifdef DSO_DLFCN
         DSO_dsobyaddr_t myDSO_dsobyaddr;
         DSO_free_t myDSO_free;

         /*
          * This is resembling the code used in ossl_init_base() and
          * OPENSSL_atexit() to block unloading the library after dlclose().
          * We are not testing this on Windows, because it is done there in a
          * completely different way. Especially as a call to DSO_dsobyaddr()
          * will always return an error, because DSO_pathbyaddr() is not
          * implemented there.
          */
         if (!sd_sym(cryptolib, "DSO_dsobyaddr", &symbols[0].sym)
                 || !sd_sym(cryptolib, "DSO_free", &symbols[1].sym)) {
             fprintf(stderr, "Unable to load DSO symbols\n");
             goto end;
         }

         myDSO_dsobyaddr = (DSO_dsobyaddr_t)symbols[0].func;
         myDSO_free = (DSO_free_t)symbols[1].func;

         {
             DSO *hndl;
             /* use known symbol from crypto module */
             hndl = myDSO_dsobyaddr((void (*)(void))myERR_get_error, 0);
             if (hndl == NULL) {
                 fprintf(stderr, "DSO_dsobyaddr() failed\n");
                 goto end;
             }
             myDSO_free(hndl);
         }
 # endif /* DSO_DLFCN */
     }

     if (!sd_close(cryptolib)) {
         fprintf(stderr, "Failed to close libcrypto\n");
         goto end;
     }
     cryptolib = SD_INIT;

     if (test_type == CRYPTO_FIRST || test_type == SSL_FIRST) {
         if (!sd_close(ssllib)) {
             fprintf(stderr, "Failed to close libssl\n");
             goto end;
         }
         ssllib = SD_INIT;
     }

 # if defined(OPENSSL_NO_PINSHARED) \
     && defined(__GLIBC__) \
     && defined(__GLIBC_PREREQ) \
     && defined(OPENSSL_SYS_LINUX)
 #  if __GLIBC_PREREQ(2, 3)
     /*
      * If we didn't pin the so then we are hopefully on a platform that supports
      * running atexit() on so unload. If not we might crash. We know this is
      * true on linux since glibc 2.2.3
      */
     if (test_type != NO_ATEXIT && atexit_handler_done != 1) {
         fprintf(stderr, "atexit() handler did not run\n");
         goto end;
     }
 #  endif
 # endif

     result = 1;
 end:
     if (cryptolib != SD_INIT)
         sd_close(cryptolib);
     if (ssllib != SD_INIT)
         sd_close(ssllib);
     return result;
 }
 #endif


 /*
  * shlibloadtest should not use the normal test framework because we don't want
  * it to link against libcrypto (which the framework uses). The point of the
  * test is to check dynamic loading and unloading of libcrypto/libssl.
  */
 int main(int argc, char *argv[])
 {
     const char *p;

     if (argc != 5) {
         fprintf(stderr, "Incorrect number of arguments\n");
         return 1;
     }

     p = argv[1];

     if (strcmp(p, "-crypto_first") == 0) {
         test_type = CRYPTO_FIRST;
     } else if (strcmp(p, "-ssl_first") == 0) {
         test_type = SSL_FIRST;
     } else if (strcmp(p, "-just_crypto") == 0) {
         test_type = JUST_CRYPTO;
     } else if (strcmp(p, "-dso_ref") == 0) {
         test_type = DSO_REFTEST;
     } else if (strcmp(p, "-no_atexit") == 0) {
         test_type = NO_ATEXIT;
     } else {
         fprintf(stderr, "Unrecognised argument\n");
         return 1;
     }
     path_crypto = argv[2];
     path_ssl = argv[3];
     path_atexit = argv[4];
     if (path_crypto == NULL || path_ssl == NULL) {
         fprintf(stderr, "Invalid libcrypto/libssl path\n");
         return 1;
     }

 #ifdef SD_INIT
     if (!test_lib())
         return 1;
 #endif
     return 0;
 }
	/*
	* Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
	*
	* Licensed under the Apache License 2.0 (the "License"). You may not use
	* this file except in compliance with the License. You can obtain a copy
	* in the file LICENSE in the source distribution or at
	* https://www.openssl.org/source/license.html
	*/

	#include <stdio.h>
	#include <string.h>
	#include <stdlib.h>
	#include <openssl/opensslv.h>
	#include <openssl/ssl.h>
	#include <openssl/types.h>
	#include "simpledynamic.h"

	typedef void DSO;

	typedef const SSL_METHOD * (*TLS_method_t)(void);
	typedef SSL_CTX * (SSL_CTX_new_t)(const SSL_METHOD meth);
	typedef void (SSL_CTX_free_t)(SSL_CTX );
	typedef int (OPENSSL_init_crypto_t)(uint64_t, void );
	typedef int (OPENSSL_atexit_t)(void (handler)(void));
	typedef unsigned long (*ERR_get_error_t)(void);
	typedef unsigned long (*OPENSSL_version_major_t)(void);
	typedef unsigned long (*OPENSSL_version_minor_t)(void);
	typedef unsigned long (*OPENSSL_version_patch_t)(void);
	typedef DSO * (DSO_dsobyaddr_t)(void (addr)(void), int flags);
	typedef int (DSO_free_t)(DSO dso);

	typedef enum test_types_en {
	CRYPTO_FIRST,
	SSL_FIRST,
	JUST_CRYPTO,
	DSO_REFTEST,
	NO_ATEXIT
	} TEST_TYPE;

	static TEST_TYPE test_type;
	static const char *path_crypto;
	static const char *path_ssl;
	static const char *path_atexit;

	#ifdef SD_INIT

	static int atexit_handler_done = 0;

	static void atexit_handler(void)
	{
	FILE *atexit_file = fopen(path_atexit, "w");

	if (atexit_file == NULL)
	return;

	fprintf(atexit_file, "atexit() run\n");
	fclose(atexit_file);
	atexit_handler_done++;
	}

	static int test_lib(void)
	{
	SD ssllib = SD_INIT;
	SD cryptolib = SD_INIT;
	SSL_CTX *ctx;
	union {
	void (*func)(void);
	SD_SYM sym;
	} symbols[5];
	TLS_method_t myTLS_method;
	SSL_CTX_new_t mySSL_CTX_new;
	SSL_CTX_free_t mySSL_CTX_free;
	ERR_get_error_t myERR_get_error;
	OPENSSL_version_major_t myOPENSSL_version_major;
	OPENSSL_version_minor_t myOPENSSL_version_minor;
	OPENSSL_version_patch_t myOPENSSL_version_patch;
	OPENSSL_atexit_t myOPENSSL_atexit;
	int result = 0;

	switch (test_type) {
	case JUST_CRYPTO:
	case DSO_REFTEST:
	case NO_ATEXIT:
	case CRYPTO_FIRST:
	if (!sd_load(path_crypto, &cryptolib, SD_SHLIB)) {
	fprintf(stderr, "Failed to load libcrypto\n");
	goto end;
	}
	if (test_type != CRYPTO_FIRST)
	break;
	/* Fall through */

	case SSL_FIRST:
	if (!sd_load(path_ssl, &ssllib, SD_SHLIB)) {
	fprintf(stderr, "Failed to load libssl\n");
	goto end;
	}
	if (test_type != SSL_FIRST)
	break;
	if (!sd_load(path_crypto, &cryptolib, SD_SHLIB)) {
	fprintf(stderr, "Failed to load libcrypto\n");
	goto end;
	}
	break;
	}

	if (test_type == NO_ATEXIT) {
	OPENSSL_init_crypto_t myOPENSSL_init_crypto;

	if (!sd_sym(cryptolib, "OPENSSL_init_crypto", &symbols[0].sym)) {
	fprintf(stderr, "Failed to load OPENSSL_init_crypto symbol\n");
	goto end;
	}
	myOPENSSL_init_crypto = (OPENSSL_init_crypto_t)symbols[0].func;
	if (!myOPENSSL_init_crypto(OPENSSL_INIT_NO_ATEXIT, NULL)) {
	fprintf(stderr, "Failed to initialise libcrypto\n");
	goto end;
	}
	}

	if (test_type != JUST_CRYPTO
	&& test_type != DSO_REFTEST
	&& test_type != NO_ATEXIT) {
	if (!sd_sym(ssllib, "TLS_method", &symbols[0].sym)
	\|\| !sd_sym(ssllib, "SSL_CTX_new", &symbols[1].sym)
	\|\| !sd_sym(ssllib, "SSL_CTX_free", &symbols[2].sym)) {
	fprintf(stderr, "Failed to load libssl symbols\n");
	goto end;
	}
	myTLS_method = (TLS_method_t)symbols[0].func;
	mySSL_CTX_new = (SSL_CTX_new_t)symbols[1].func;
	mySSL_CTX_free = (SSL_CTX_free_t)symbols[2].func;
	ctx = mySSL_CTX_new(myTLS_method());
	if (ctx == NULL) {
	fprintf(stderr, "Failed to create SSL_CTX\n");
	goto end;
	}
	mySSL_CTX_free(ctx);
	}

	if (!sd_sym(cryptolib, "ERR_get_error", &symbols[0].sym)
	\|\| !sd_sym(cryptolib, "OPENSSL_version_major", &symbols[1].sym)
	\|\| !sd_sym(cryptolib, "OPENSSL_version_minor", &symbols[2].sym)
	\|\| !sd_sym(cryptolib, "OPENSSL_version_patch", &symbols[3].sym)
	\|\| !sd_sym(cryptolib, "OPENSSL_atexit", &symbols[4].sym)) {
	fprintf(stderr, "Failed to load libcrypto symbols\n");
	goto end;
	}
	myERR_get_error = (ERR_get_error_t)symbols[0].func;
	if (myERR_get_error() != 0) {
	fprintf(stderr, "Unexpected ERR_get_error() response\n");
	goto end;
	}

	/* Library and header version should be identical in this test */
	myOPENSSL_version_major = (OPENSSL_version_major_t)symbols[1].func;
	myOPENSSL_version_minor = (OPENSSL_version_minor_t)symbols[2].func;
	myOPENSSL_version_patch = (OPENSSL_version_patch_t)symbols[3].func;
	if (myOPENSSL_version_major() != OPENSSL_VERSION_MAJOR
	\|\| myOPENSSL_version_minor() != OPENSSL_VERSION_MINOR
	\|\| myOPENSSL_version_patch() != OPENSSL_VERSION_PATCH) {
	fprintf(stderr, "Invalid library version number\n");
	goto end;
	}

	myOPENSSL_atexit = (OPENSSL_atexit_t)symbols[4].func;
	if (!myOPENSSL_atexit(atexit_handler)) {
	fprintf(stderr, "Failed to register atexit handler\n");
	goto end;
	}

	if (test_type == DSO_REFTEST) {
	# ifdef DSO_DLFCN
	DSO_dsobyaddr_t myDSO_dsobyaddr;
	DSO_free_t myDSO_free;

	/*
	* This is resembling the code used in ossl_init_base() and
	* OPENSSL_atexit() to block unloading the library after dlclose().
	* We are not testing this on Windows, because it is done there in a
	* completely different way. Especially as a call to DSO_dsobyaddr()
	* will always return an error, because DSO_pathbyaddr() is not
	* implemented there.
	*/
	if (!sd_sym(cryptolib, "DSO_dsobyaddr", &symbols[0].sym)
	\|\| !sd_sym(cryptolib, "DSO_free", &symbols[1].sym)) {
	fprintf(stderr, "Unable to load DSO symbols\n");
	goto end;
	}

	myDSO_dsobyaddr = (DSO_dsobyaddr_t)symbols[0].func;
	myDSO_free = (DSO_free_t)symbols[1].func;

	{
	DSO *hndl;
	/* use known symbol from crypto module */
	hndl = myDSO_dsobyaddr((void (*)(void))myERR_get_error, 0);
	if (hndl == NULL) {
	fprintf(stderr, "DSO_dsobyaddr() failed\n");
	goto end;
	}
	myDSO_free(hndl);
	}
	# endif /* DSO_DLFCN */
	}

	if (!sd_close(cryptolib)) {
	fprintf(stderr, "Failed to close libcrypto\n");
	goto end;
	}
	cryptolib = SD_INIT;

	if (test_type == CRYPTO_FIRST \|\| test_type == SSL_FIRST) {
	if (!sd_close(ssllib)) {
	fprintf(stderr, "Failed to close libssl\n");
	goto end;
	}
	ssllib = SD_INIT;
	}

	# if defined(OPENSSL_NO_PINSHARED) \
	&& defined(__GLIBC__) \
	&& defined(__GLIBC_PREREQ) \
	&& defined(OPENSSL_SYS_LINUX)
	# if __GLIBC_PREREQ(2, 3)
	/*
	* If we didn't pin the so then we are hopefully on a platform that supports
	* running atexit() on so unload. If not we might crash. We know this is
	* true on linux since glibc 2.2.3
	*/
	if (test_type != NO_ATEXIT && atexit_handler_done != 1) {
	fprintf(stderr, "atexit() handler did not run\n");
	goto end;
	}
	# endif
	# endif

	result = 1;
	end:
	if (cryptolib != SD_INIT)
	sd_close(cryptolib);
	if (ssllib != SD_INIT)
	sd_close(ssllib);
	return result;
	}
	#endif


	/*
	* shlibloadtest should not use the normal test framework because we don't want
	* it to link against libcrypto (which the framework uses). The point of the
	* test is to check dynamic loading and unloading of libcrypto/libssl.
	*/
	int main(int argc, char *argv[])
	{
	const char *p;

	if (argc != 5) {
	fprintf(stderr, "Incorrect number of arguments\n");
	return 1;
	}

	p = argv[1];

	if (strcmp(p, "-crypto_first") == 0) {
	test_type = CRYPTO_FIRST;
	} else if (strcmp(p, "-ssl_first") == 0) {
	test_type = SSL_FIRST;
	} else if (strcmp(p, "-just_crypto") == 0) {
	test_type = JUST_CRYPTO;
	} else if (strcmp(p, "-dso_ref") == 0) {
	test_type = DSO_REFTEST;
	} else if (strcmp(p, "-no_atexit") == 0) {
	test_type = NO_ATEXIT;
	} else {
	fprintf(stderr, "Unrecognised argument\n");
	return 1;
	}
	path_crypto = argv[2];
	path_ssl = argv[3];
	path_atexit = argv[4];
	if (path_crypto == NULL \|\| path_ssl == NULL) {
	fprintf(stderr, "Invalid libcrypto/libssl path\n");
	return 1;
	}

	#ifdef SD_INIT
	if (!test_lib())
	return 1;
	#endif
	return 0;
	}