More method functions for elliptic curves,
[openssl.git] / crypto / cryptlib.c
index 9a7e80b7f8b66ec560b0c3da9d7d97ea745a6cb6..11ac630c225ad1d8dcad39acdc3ef9a4246ea8c4 100644 (file)
 #include <stdio.h>
 #include <string.h>
 #include "cryptlib.h"
-#include "crypto.h"
-#include "date.h"
+#include <openssl/crypto.h>
+#include <openssl/safestack.h>
 
-#if defined(WIN32) || defined(WIN16)
+#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
 static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
 #endif
 
+DECLARE_STACK_OF(CRYPTO_dynlock)
+IMPLEMENT_STACK_OF(CRYPTO_dynlock)
+
 /* real #defines in crypto.h, keep these upto date */
-static char* lock_names[CRYPTO_NUM_LOCKS] =
+static const char* lock_names[CRYPTO_NUM_LOCKS] =
        {
        "<<ERROR>>",
        "err",
@@ -84,100 +87,278 @@ static char* lock_names[CRYPTO_NUM_LOCKS] =
        "ssl_ctx",
        "ssl_cert",
        "ssl_session",
+       "ssl_sess_cert",
        "ssl",
        "rand",
        "debug_malloc",
        "BIO",
-       "bio_gethostbyname",
+       "gethostbyname",
+       "getservbyname",
+       "readdir",
        "RSA_blinding",
+       "dh",
+       "debug_malloc2",
+       "dso",
+       "dynlock",
+       "engine",
+#if CRYPTO_NUM_LOCKS != 29
+# error "Inconsistency between crypto.h and cryptlib.c"
+#endif
        };
 
+/* This is for applications to allocate new type names in the non-dynamic
+   array of lock names.  These are numbered with positive numbers.  */
 static STACK *app_locks=NULL;
 
-#ifndef NOPROTO
+/* For applications that want a more dynamic way of handling threads, the
+   following stack is used.  These are externally numbered with negative
+   numbers.  */
+static STACK_OF(CRYPTO_dynlock) *dyn_locks=NULL;
+
+
 static void (MS_FAR *locking_callback)(int mode,int type,
-       char *file,int line)=NULL;
+       const char *file,int line)=NULL;
 static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
-       int type,char *file,int line)=NULL;
+       int type,const char *file,int line)=NULL;
 static unsigned long (MS_FAR *id_callback)(void)=NULL;
-#else
-static void (MS_FAR *locking_callback)()=NULL;
-static int (MS_FAR *add_lock_callback)()=NULL;
-static unsigned long (MS_FAR *id_callback)()=NULL;
-#endif
+static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
+       (const char *file,int line)=NULL;
+static void (MS_FAR *dynlock_lock_callback)(int mode,
+       struct CRYPTO_dynlock_value *l, const char *file,int line)=NULL;
+static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
+       const char *file,int line)=NULL;
 
-int CRYPTO_get_new_lockid(name)
-char *name;
+int CRYPTO_get_new_lockid(char *name)
        {
        char *str;
        int i;
 
+#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
        /* A hack to make Visual C++ 5.0 work correctly when linking as
         * a DLL using /MT. Without this, the application cannot use
         * and floating point printf's.
         * It also seems to be needed for Visual C 1.5 (win16) */
-#if defined(WIN32) || defined(WIN16)
        SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
 #endif
 
-       if (app_locks == NULL)
-               if ((app_locks=sk_new_null()) == NULL)
-                       CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
-                       return(0);
+       if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL))
+               {
+               CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
+               return(0);
+               }
        if ((str=BUF_strdup(name)) == NULL)
+               {
+               CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
                return(0);
+               }
        i=sk_push(app_locks,str);
        if (!i)
-               Free(str);
+               OPENSSL_free(str);
        else
                i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
        return(i);
        }
 
-void (*CRYPTO_get_locking_callback(P_V))(P_I_I_P_I)
+int CRYPTO_num_locks(void)
+       {
+       return CRYPTO_NUM_LOCKS;
+       }
+
+int CRYPTO_get_new_dynlockid(void)
+       {
+       int i = 0;
+       CRYPTO_dynlock *pointer = NULL;
+
+       if (dynlock_create_callback == NULL)
+               {
+               CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
+               return(0);
+               }
+       CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
+       if ((dyn_locks == NULL)
+               && ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL))
+               {
+               CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
+               CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
+               return(0);
+               }
+       CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
+
+       pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock));
+       if (pointer == NULL)
+               {
+               CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
+               return(0);
+               }
+       pointer->references = 1;
+       pointer->data = dynlock_create_callback(__FILE__,__LINE__);
+       if (pointer->data == NULL)
+               {
+               OPENSSL_free(pointer);
+               CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
+               return(0);
+               }
+
+       CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
+       /* First, try to find an existing empty slot */
+       i=sk_CRYPTO_dynlock_find(dyn_locks,NULL);
+       /* If there was none, push, thereby creating a new one */
+       if (i == -1)
+               i=sk_CRYPTO_dynlock_push(dyn_locks,pointer);
+       CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
+
+       if (!i)
+               {
+               dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
+               OPENSSL_free(pointer);
+               }
+       else
+               i += 1; /* to avoid 0 */
+       return -i;
+       }
+
+void CRYPTO_destroy_dynlockid(int i)
+       {
+       CRYPTO_dynlock *pointer = NULL;
+       if (i)
+               i = -i-1;
+       if (dynlock_destroy_callback == NULL)
+               return;
+
+       CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
+
+       if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks))
+               return;
+       pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
+       if (pointer != NULL)
+               {
+               --pointer->references;
+#ifdef REF_CHECK
+               if (pointer->references < 0)
+                       {
+                       fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n");
+                       abort();
+                       }
+               else
+#endif
+                       if (--(pointer->references) <= 0)
+                               {
+                               sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
+                               }
+                       else
+                               pointer = NULL;
+               }
+       CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
+
+       if (pointer)
+               {
+               dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
+               OPENSSL_free(pointer);
+               }
+       }
+
+struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
+       {
+       CRYPTO_dynlock *pointer = NULL;
+       if (i)
+               i = -i-1;
+
+       CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
+
+       if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
+               pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
+       if (pointer)
+               pointer->references++;
+
+       CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
+
+       if (pointer)
+               return pointer->data;
+       return NULL;
+       }
+
+struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
+       (const char *file,int line)
+       {
+       return(dynlock_create_callback);
+       }
+
+void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
+       struct CRYPTO_dynlock_value *l, const char *file,int line)
+       {
+       return(dynlock_lock_callback);
+       }
+
+void (*CRYPTO_get_dynlock_destroy_callback(void))
+       (struct CRYPTO_dynlock_value *l, const char *file,int line)
+       {
+       return(dynlock_destroy_callback);
+       }
+
+void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
+       (const char *file, int line))
+       {
+       dynlock_create_callback=func;
+       }
+
+void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
+       struct CRYPTO_dynlock_value *l, const char *file, int line))
+       {
+       dynlock_lock_callback=func;
+       }
+
+void CRYPTO_set_dynlock_destroy_callback(void (*func)
+       (struct CRYPTO_dynlock_value *l, const char *file, int line))
+       {
+       dynlock_destroy_callback=func;
+       }
+
+
+void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
+               int line)
        {
        return(locking_callback);
        }
 
-int (*CRYPTO_get_add_lock_callback(P_V))(P_IP_I_I_P_I)
+int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
+                                         const char *file,int line)
        {
        return(add_lock_callback);
        }
 
-void CRYPTO_set_locking_callback(func)
-void (*func)(P_I_I_P_I);
+void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
+                                             const char *file,int line))
        {
        locking_callback=func;
        }
 
-void CRYPTO_set_add_lock_callback(func)
-int (*func)(P_IP_I_I_P_I);
+void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
+                                             const char *file,int line))
        {
        add_lock_callback=func;
        }
 
-unsigned long (*CRYPTO_get_id_callback(P_V))(P_V)
+unsigned long (*CRYPTO_get_id_callback(void))(void)
        {
        return(id_callback);
        }
 
-void CRYPTO_set_id_callback(func)
-unsigned long (*func)(P_V);
+void CRYPTO_set_id_callback(unsigned long (*func)(void))
        {
        id_callback=func;
        }
 
-unsigned long CRYPTO_thread_id()
+unsigned long CRYPTO_thread_id(void)
        {
        unsigned long ret=0;
 
        if (id_callback == NULL)
                {
-#ifdef WIN16
+#ifdef OPENSSL_SYS_WIN16
                ret=(unsigned long)GetCurrentTask();
-#elif defined(WIN32)
+#elif defined(OPENSSL_SYS_WIN32)
                ret=(unsigned long)GetCurrentThreadId();
-#elif defined(MSDOS)
+#elif defined(GETPID_IS_MEANINGLESS)
                ret=1L;
 #else
                ret=(unsigned long)getpid();
@@ -188,11 +369,7 @@ unsigned long CRYPTO_thread_id()
        return(ret);
        }
 
-void CRYPTO_lock(mode,type,file,line)
-int mode;
-int type;
-char *file;
-int line;
+void CRYPTO_lock(int mode, int type, const char *file, int line)
        {
 #ifdef LOCK_DEBUG
                {
@@ -217,18 +394,28 @@ int line;
                        CRYPTO_get_lock_name(type), file, line);
                }
 #endif
-       if (locking_callback != NULL)
-               locking_callback(mode,type,file,line);
+       if (type < 0)
+               {
+               int i = -type - 1;
+               struct CRYPTO_dynlock_value *pointer
+                       = CRYPTO_get_dynlock_value(i);
+
+               if (pointer)
+                       {
+                       dynlock_lock_callback(mode, pointer, file, line);
+                       }
+
+               CRYPTO_destroy_dynlockid(i);
+               }
+       else
+               if (locking_callback != NULL)
+                       locking_callback(mode,type,file,line);
        }
 
-int CRYPTO_add_lock(pointer,amount,type,file,line)
-int *pointer;
-int amount;
-int type;
-char *file;
-int line;
+int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
+            int line)
        {
-       int ret;
+       int ret = 0;
 
        if (add_lock_callback != NULL)
                {
@@ -264,11 +451,10 @@ int line;
        return(ret);
        }
 
-char *CRYPTO_get_lock_name(type)
-int type;
+const char *CRYPTO_get_lock_name(int type)
        {
        if (type < 0)
-               return("ERROR");
+               return("dynamic");
        else if (type < CRYPTO_NUM_LOCKS)
                return(lock_names[type]);
        else if (type-CRYPTO_NUM_LOCKS >= sk_num(app_locks))
@@ -278,15 +464,13 @@ int type;
        }
 
 #ifdef _DLL
-#ifdef WIN32
+#ifdef OPENSSL_SYS_WIN32
 
 /* All we really need to do is remove the 'error' state when a thread
  * detaches */
 
-BOOL WINAPI DLLEntryPoint(hinstDLL,fdwReason,lpvReserved)
-HINSTANCE hinstDLL;
-DWORD fdwReason;
-LPVOID lpvReserved;
+BOOL WINAPI DLLEntryPoint(HINSTANCE hinstDLL, DWORD fdwReason,
+            LPVOID lpvReserved)
        {
        switch(fdwReason)
                {