* https://www.openssl.org/source/license.html
*/
-#include "e_os.h"
-
-/* We need to define this to get macros like S_IFBLK and S_IFCHR */
-#if !defined(OPENSSL_SYS_VXWORKS)
-# define _XOPEN_SOURCE 500
-#endif
+#include "internal/cryptlib.h"
#include <errno.h>
#include <stdio.h>
#ifndef OPENSSL_NO_POSIX_IO
# include <sys/stat.h>
# include <fcntl.h>
+/*
+ * Following should not be needed, and we could have been stricter
+ * and demand S_IS*. But some systems just don't comply... Formally
+ * below macros are "anatomically incorrect", because normally they
+ * would look like ((m) & MASK == TYPE), but since MASK availability
+ * is as questionable, we settle for this poor-man fallback...
+ */
+# if !defined(S_ISBLK)
+# if defined(_S_IFBLK)
+# define S_ISBLK(m) ((m) & _S_IFBLK)
+# elif defined(S_IFBLK)
+# define S_ISBLK(m) ((m) & S_IFBLK)
+# elif defined(_WIN32)
+# define S_ISBLK(m) 0 /* no concept of block devices on Windows */
+# endif
+# endif
+# if !defined(S_ISCHR)
+# if defined(_S_IFCHR)
+# define S_ISCHR(m) ((m) & _S_IFCHR)
+# elif defined(S_IFCHR)
+# define S_ISCHR(m) ((m) & S_IFCHR)
+# endif
+# endif
#endif
#ifdef _WIN32
# define chmod _chmod
# define open _open
# define fdopen _fdopen
+# define fstat _fstat
+# define fileno _fileno
#endif
#undef BUFSIZE
#define RAND_DATA 1024
#ifdef OPENSSL_SYS_VMS
+/*
+ * Misc hacks needed for specific cases.
+ *
+ * __FILE_ptr32 is a type provided by DEC C headers (types.h specifically)
+ * to make sure the FILE* is a 32-bit pointer no matter what. We know that
+ * stdio function return this type (a study of stdio.h proves it).
+ * Additionally, we create a similar char pointer type for the sake of
+ * vms_setbuf below.
+ */
+# if __INITIAL_POINTER_SIZE == 64
+# pragma pointer_size save
+# pragma pointer_size 32
+typedef char *char_ptr32;
+# pragma pointer_size restore
+/*
+ * On VMS, setbuf() will only take 32-bit pointers, and a compilation
+ * with /POINTER_SIZE=64 will give off a MAYLOSEDATA2 warning here.
+ * Since we know that the FILE* really is a 32-bit pointer expanded to
+ * 64 bits, we also know it's safe to convert it back to a 32-bit pointer.
+ * As for the buffer parameter, we only use NULL here, so that passes as
+ * well...
+ */
+# define setbuf(fp,buf) (setbuf)((__FILE_ptr32)(fp), (char_ptr32)(buf))
+# endif
+
/*
* This declaration is a nasty hack to get around vms' extension to fopen for
- * passing in sharing options being disabled by our /STANDARD=ANSI89
+ * passing in sharing options being disabled by /STANDARD=ANSI89
*/
-static FILE *(*const vms_fopen)(const char *, const char *, ...) =
- (FILE *(*)(const char *, const char *, ...))fopen;
+static __FILE_ptr32 (*const vms_fopen)(const char *, const char *, ...) =
+ (__FILE_ptr32 (*)(const char *, const char *, ...))fopen;
# define VMS_OPEN_ATTRS "shr=get,put,upd,del","ctx=bin,stm","rfm=stm","rat=none","mrs=0"
+
+# define openssl_fopen(fname,mode) vms_fopen((fname), (mode), VMS_OPEN_ATTRS)
#endif
#define RFILE ".rnd"
struct stat sb;
#endif
int i, ret = 0, n;
- FILE *in;
+ FILE *in = NULL;
if (file == NULL)
- return (0);
+ return 0;
+
+ if (bytes == 0)
+ return ret;
+
+ in = openssl_fopen(file, "rb");
+ if (in == NULL)
+ goto err;
#ifndef OPENSSL_NO_POSIX_IO
/*
* applications such as Valgrind.
*/
memset(&sb, 0, sizeof(sb));
- if (stat(file, &sb) < 0)
- return (0);
+ if (fstat(fileno(in), &sb) < 0)
+ goto err;
RAND_add(&sb, sizeof(sb), 0.0);
-#endif
- if (bytes == 0)
- return (ret);
-#ifdef OPENSSL_SYS_VMS
- in = vms_fopen(file, "rb", VMS_OPEN_ATTRS);
-#else
- in = fopen(file, "rb");
-#endif
- if (in == NULL)
- goto err;
-#if defined(S_IFBLK) && defined(S_IFCHR) && !defined(OPENSSL_NO_POSIX_IO)
- if (sb.st_mode & (S_IFBLK | S_IFCHR)) {
+# if defined(S_ISBLK) && defined(S_ISCHR)
+ if (S_ISBLK(sb.st_mode) || S_ISCHR(sb.st_mode)) {
/*
* this file is a device. we don't want read an infinite number of
* bytes from a random device, nor do we want to use buffered I/O
* because we will waste system entropy.
*/
bytes = (bytes == -1) ? 2048 : bytes; /* ok, is 2048 enough? */
- setbuf(stdin, NULL); /* don't do buffered reads */
+ setbuf(in, NULL); /* don't do buffered reads */
}
+# endif
#endif
for (;;) {
if (bytes > 0)
break;
}
}
- fclose(in);
OPENSSL_cleanse(buf, BUFSIZE);
err:
- return (ret);
+ if (in != NULL)
+ fclose(in);
+ return ret;
}
int RAND_write_file(const char *file)
#ifndef OPENSSL_NO_POSIX_IO
struct stat sb;
+# if defined(S_ISBLK) && defined(S_ISCHR)
+# ifdef _WIN32
+ /*
+ * Check for |file| being a driver as "ASCII-safe" on Windows,
+ * because driver paths are always ASCII.
+ */
+# endif
i = stat(file, &sb);
if (i != -1) {
-# if defined(S_ISBLK) && defined(S_ISCHR)
if (S_ISBLK(sb.st_mode) || S_ISCHR(sb.st_mode)) {
/*
* this file is a device. we don't write back to it. we
* device. Otherwise attempting to write to and chmod the device
* causes problems.
*/
- return (1);
+ return 1;
}
# endif
}
#endif
-#if defined(O_CREAT) && !defined(OPENSSL_NO_POSIX_IO) && !defined(OPENSSL_SYS_VMS)
+#if defined(O_CREAT) && !defined(OPENSSL_NO_POSIX_IO) && \
+ !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_WINDOWS)
{
# ifndef O_BINARY
# define O_BINARY 0
* rand file in a concurrent use situation.
*/
- out = vms_fopen(file, "rb+", VMS_OPEN_ATTRS);
- if (out == NULL)
- out = vms_fopen(file, "wb", VMS_OPEN_ATTRS);
-#else
- if (out == NULL)
- out = fopen(file, "wb");
+ out = openssl_fopen(file, "rb+");
#endif
+ if (out == NULL)
+ out = openssl_fopen(file, "wb");
if (out == NULL)
goto err;
const char *RAND_file_name(char *buf, size_t size)
{
char *s = NULL;
+ int use_randfile = 1;
#ifdef __OpenBSD__
struct stat sb;
#endif
- if (OPENSSL_issetugid() == 0)
- s = getenv("RANDFILE");
- if (s != NULL && *s && strlen(s) + 1 < size) {
- if (OPENSSL_strlcpy(buf, s, size) >= size)
- return NULL;
+#if defined(_WIN32) && defined(CP_UTF8)
+ DWORD len;
+ WCHAR *var, *val;
+
+ if ((var = L"RANDFILE",
+ len = GetEnvironmentVariableW(var, NULL, 0)) == 0
+ && (var = L"HOME", use_randfile = 0,
+ len = GetEnvironmentVariableW(var, NULL, 0)) == 0
+ && (var = L"USERPROFILE",
+ len = GetEnvironmentVariableW(var, NULL, 0)) == 0) {
+ var = L"SYSTEMROOT",
+ len = GetEnvironmentVariableW(var, NULL, 0);
+ }
+
+ if (len != 0) {
+ int sz;
+
+ val = _alloca(len * sizeof(WCHAR));
+
+ if (GetEnvironmentVariableW(var, val, len) < len
+ && (sz = WideCharToMultiByte(CP_UTF8, 0, val, -1, NULL, 0,
+ NULL, NULL)) != 0) {
+ s = _alloca(sz);
+ if (WideCharToMultiByte(CP_UTF8, 0, val, -1, s, sz,
+ NULL, NULL) == 0)
+ s = NULL;
+ }
+ }
+#else
+ if (OPENSSL_issetugid() != 0) {
+ use_randfile = 0;
} else {
- if (OPENSSL_issetugid() == 0)
+ s = getenv("RANDFILE");
+ if (s == NULL || *s == '\0') {
+ use_randfile = 0;
s = getenv("HOME");
-#ifdef DEFAULT_HOME
- if (s == NULL) {
- s = DEFAULT_HOME;
}
+ }
#endif
- if (s && *s && strlen(s) + strlen(RFILE) + 2 < size) {
+#ifdef DEFAULT_HOME
+ if (!use_randfile && s == NULL) {
+ s = DEFAULT_HOME;
+ }
+#endif
+ if (s != NULL && *s) {
+ size_t len = strlen(s);
+
+ if (use_randfile && len + 1 < size) {
+ if (OPENSSL_strlcpy(buf, s, size) >= size)
+ return NULL;
+ } else if (len + strlen(RFILE) + 2 < size) {
OPENSSL_strlcpy(buf, s, size);
#ifndef OPENSSL_SYS_VMS
OPENSSL_strlcat(buf, "/", size);
#endif
OPENSSL_strlcat(buf, RFILE, size);
- } else
- buf[0] = '\0'; /* no file name */
+ }
+ } else {
+ buf[0] = '\0'; /* no file name */
}
#ifdef __OpenBSD__
* available.
*/
- if (!buf[0])
+ if (!buf[0] || stat(buf, &sb) == -1)
if (OPENSSL_strlcpy(buf, "/dev/arandom", size) >= size) {
- return (NULL);
- }
- if (stat(buf, &sb) == -1)
- if (OPENSSL_strlcpy(buf, "/dev/arandom", size) >= size) {
- return (NULL);
+ return NULL;
}
#endif
- return (buf);
+ return buf[0] ? buf : NULL;
}
projects / openssl.git / blobdiff