1 files changed, 104 insertions, 37 deletions

diff --git a/src/lib/libcrypto/rand/randfile.c b/src/lib/libcrypto/rand/randfile.c
index f2b3746363..982074c465 100644
--- a/src/lib/libcrypto/rand/randfile.c
+++ b/src/lib/libcrypto/rand/randfile.c
@@ -56,22 +56,41 @@
  * [including the GNU Public Licence.]
  */
 
+#include <errno.h>
 #include <stdio.h>
-#include "cryptlib.h"
-#include <sys/stat.h>
-#include <sys/types.h>
-#include "rand.h"
+#include <stdlib.h>
+#include <string.h>
+
+#include "e_os.h"
+#include <openssl/crypto.h>
+#include <openssl/rand.h>
+
+#ifdef OPENSSL_SYS_VMS
+#include <unixio.h>
+#endif
+#ifndef NO_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef MAC_OS_pre_X
+# include <stat.h>
+#else
+# include <sys/stat.h>
+#endif
 
 #undef BUFSIZE
 #define BUFSIZE 1024
 #define RAND_DATA 1024
 
-/* #define RFILE ".rand" - defined in ../../e_os.h */
+/* #define RFILE ".rnd" - defined in ../../e_os.h */
+
+/* Note that these functions are intended for seed files only.
+ * Entropy devices and EGD sockets are handled in rand_unix.c */
 
-int RAND_load_file(file,bytes)
-char *file;
-long bytes;
+int RAND_load_file(const char *file, long bytes)
         {
+        /* If bytes >= 0, read up to 'bytes' bytes.
+         * if bytes == -1, read complete file. */
+
         MS_STATIC unsigned char buf[BUFSIZE];
         struct stat sb;
         int i,ret=0,n;
@@ -81,23 +100,28 @@ long bytes;
 
         i=stat(file,&sb);
         /* If the state fails, put some crap in anyway */
-        RAND_seed((unsigned char *)&sb,sizeof(sb));
-        ret+=sizeof(sb);
+        RAND_add(&sb,sizeof(sb),0);
         if (i < 0) return(0);
-        if (bytes <= 0) return(ret);
+        if (bytes == 0) return(ret);
 
-        in=fopen(file,"r");
+        in=fopen(file,"rb");
         if (in == NULL) goto err;
         for (;;)
                 {
-                n=(bytes < BUFSIZE)?(int)bytes:BUFSIZE;
+                if (bytes > 0)
+                        n = (bytes < BUFSIZE)?(int)bytes:BUFSIZE;
+                else
+                        n = BUFSIZE;
                 i=fread(buf,1,n,in);
                 if (i <= 0) break;
                 /* even if n != i, use the full array */
-                RAND_seed(buf,n);
+                RAND_add(buf,n,i);
                 ret+=i;
-                bytes-=n;
-                if (bytes <= 0) break;
+                if (bytes > 0)
+                        {
+                        bytes-=n;
+                        if (bytes <= 0) break;
+                        }
                 }
         fclose(in);
         memset(buf,0,BUFSIZE);
@@ -105,23 +129,36 @@ err:
         return(ret);
         }
 
-int RAND_write_file(file)
-char *file;
+int RAND_write_file(const char *file)
         {
         unsigned char buf[BUFSIZE];
-        int i,ret=0;
-        FILE *out;
+        int i,ret=0,rand_err=0;
+        FILE *out = NULL;
         int n;
-
-        out=fopen(file,"w");
+        
+#if defined(O_CREAT) && !defined(OPENSSL_SYS_WIN32)
+        /* For some reason Win32 can't write to files created this way */
+        
+        /* chmod(..., 0600) is too late to protect the file,
+         * permissions should be restrictive from the start */
+        int fd = open(file, O_CREAT, 0600);
+        if (fd != -1)
+                out = fdopen(fd, "wb");
+#endif
+        if (out == NULL)
+                out = fopen(file,"wb");
         if (out == NULL) goto err;
+
+#ifndef NO_CHMOD
         chmod(file,0600);
+#endif
         n=RAND_DATA;
         for (;;)
                 {
                 i=(n > BUFSIZE)?BUFSIZE:n;
                 n-=BUFSIZE;
-                RAND_bytes(buf,i);
+                if (RAND_bytes(buf,i) <= 0)
+                        rand_err=1;
                 i=fwrite(buf,1,i,out);
                 if (i <= 0)
                         {
@@ -130,21 +167,40 @@ char *file;
                         }
                 ret+=i;
                 if (n <= 0) break;
+                }
+#ifdef OPENSSL_SYS_VMS
+        /* Try to delete older versions of the file, until there aren't
+           any */
+        {
+        char *tmpf;
+
+        tmpf = OPENSSL_malloc(strlen(file) + 4);  /* to add ";-1" and a nul */
+        if (tmpf)
+                {
+                strcpy(tmpf, file);
+                strcat(tmpf, ";-1");
+                while(delete(tmpf) == 0)
+                        ;
+                rename(file,";1"); /* Make sure it's version 1, or we
+                                      will reach the limit (32767) at
+                                      some point... */
                 }
+        }
+#endif /* OPENSSL_SYS_VMS */
+
         fclose(out);
         memset(buf,0,BUFSIZE);
 err:
-        return(ret);
+        return (rand_err ? -1 : ret);
         }
 
-char *RAND_file_name(buf,size)
-char *buf;
-int size;
+const char *RAND_file_name(char *buf, size_t size)
         {
-        char *s;
+        char *s=NULL;
         char *ret=NULL;
 
-        s=getenv("RANDFILE");
+        if (OPENSSL_issetugid() == 0)
+                s=getenv("RANDFILE");
         if (s != NULL)
                 {
                 strncpy(buf,s,size-1);
@@ -153,14 +209,25 @@ int size;
                 }
         else
                 {
-                s=getenv("HOME");
-                if (s == NULL) return(RFILE);
-                if (((int)(strlen(s)+strlen(RFILE)+2)) > size)
-                        return(RFILE);
-                strcpy(buf,s);
-                strcat(buf,"/");
-                strcat(buf,RFILE);
-                ret=buf;
+                if (OPENSSL_issetugid() == 0)
+                        s=getenv("HOME");
+#ifdef DEFAULT_HOME
+                if (s == NULL)
+                        {
+                        s = DEFAULT_HOME;
+                        }
+#endif
+                if (s != NULL && (strlen(s)+strlen(RFILE)+2 < size))
+                        {
+                        strcpy(buf,s);
+#ifndef OPENSSL_SYS_VMS
+                        strcat(buf,"/");
+#endif
+                        strcat(buf,RFILE);
+                        ret=buf;
+                        }
+                else
+                        buf[0] = '\0'; /* no file name */
                 }
         return(ret);
         }