* [including the GNU Public Licence.]
*/
-#define BIO_FD
-#include "bss_sock.c"
-#undef BIO_FD
+#include <stdio.h>
+#include <errno.h>
+#define USE_SOCKETS
+#include "cryptlib.h"
+#if defined(OPENSSL_NO_POSIX_IO)
+/*
+ * One can argue that one should implement dummy placeholder for
+ * BIO_s_fd here...
+ */
+#else
+/*
+ * As for unconditional usage of "UPLINK" interface in this module.
+ * Trouble is that unlike Unix file descriptors [which are indexes
+ * in kernel-side per-process table], corresponding descriptors on
+ * platforms which require "UPLINK" interface seem to be indexes
+ * in a user-land, non-global table. Well, in fact they are indexes
+ * in stdio _iob[], and recall that _iob[] was the very reason why
+ * "UPLINK" interface was introduced in first place. But one way on
+ * another. Neither libcrypto or libssl use this BIO meaning that
+ * file descriptors can only be provided by application. Therefore
+ * "UPLINK" calls are due...
+ */
+#include "bio_lcl.h"
+
+static int fd_write(BIO *h, const char *buf, int num);
+static int fd_read(BIO *h, char *buf, int size);
+static int fd_puts(BIO *h, const char *str);
+static int fd_gets(BIO *h, char *buf, int size);
+static long fd_ctrl(BIO *h, int cmd, long arg1, void *arg2);
+static int fd_new(BIO *h);
+static int fd_free(BIO *data);
+int BIO_fd_should_retry(int s);
+
+static BIO_METHOD methods_fdp=
+ {
+ BIO_TYPE_FD,"file descriptor",
+ fd_write,
+ fd_read,
+ fd_puts,
+ fd_gets,
+ fd_ctrl,
+ fd_new,
+ fd_free,
+ NULL,
+ };
+
+BIO_METHOD *BIO_s_fd(void)
+ {
+ return(&methods_fdp);
+ }
+
+BIO *BIO_new_fd(int fd,int close_flag)
+ {
+ BIO *ret;
+ ret=BIO_new(BIO_s_fd());
+ if (ret == NULL) return(NULL);
+ BIO_set_fd(ret,fd,close_flag);
+ return(ret);
+ }
+
+static int fd_new(BIO *bi)
+ {
+ bi->init=0;
+ bi->num=-1;
+ bi->ptr=NULL;
+ bi->flags=BIO_FLAGS_UPLINK; /* essentially redundant */
+ return(1);
+ }
+
+static int fd_free(BIO *a)
+ {
+ if (a == NULL) return(0);
+ if (a->shutdown)
+ {
+ if (a->init)
+ {
+ UP_close(a->num);
+ }
+ a->init=0;
+ a->flags=BIO_FLAGS_UPLINK;
+ }
+ return(1);
+ }
+
+static int fd_read(BIO *b, char *out,int outl)
+ {
+ int ret=0;
+
+ if (out != NULL)
+ {
+ clear_sys_error();
+ ret=UP_read(b->num,out,outl);
+ BIO_clear_retry_flags(b);
+ if (ret <= 0)
+ {
+ if (BIO_fd_should_retry(ret))
+ BIO_set_retry_read(b);
+ }
+ }
+ return(ret);
+ }
+
+static int fd_write(BIO *b, const char *in, int inl)
+ {
+ int ret;
+ clear_sys_error();
+ ret=UP_write(b->num,in,inl);
+ BIO_clear_retry_flags(b);
+ if (ret <= 0)
+ {
+ if (BIO_fd_should_retry(ret))
+ BIO_set_retry_write(b);
+ }
+ return(ret);
+ }
+
+static long fd_ctrl(BIO *b, int cmd, long num, void *ptr)
+ {
+ long ret=1;
+ int *ip;
+
+ switch (cmd)
+ {
+ case BIO_CTRL_RESET:
+ num=0;
+ case BIO_C_FILE_SEEK:
+ ret=(long)UP_lseek(b->num,num,0);
+ break;
+ case BIO_C_FILE_TELL:
+ case BIO_CTRL_INFO:
+ ret=(long)UP_lseek(b->num,0,1);
+ break;
+ case BIO_C_SET_FD:
+ fd_free(b);
+ b->num= *((int *)ptr);
+ b->shutdown=(int)num;
+ b->init=1;
+ break;
+ case BIO_C_GET_FD:
+ if (b->init)
+ {
+ ip=(int *)ptr;
+ if (ip != NULL) *ip=b->num;
+ ret=b->num;
+ }
+ else
+ ret= -1;
+ break;
+ case BIO_CTRL_GET_CLOSE:
+ ret=b->shutdown;
+ break;
+ case BIO_CTRL_SET_CLOSE:
+ b->shutdown=(int)num;
+ break;
+ case BIO_CTRL_PENDING:
+ case BIO_CTRL_WPENDING:
+ ret=0;
+ break;
+ case BIO_CTRL_DUP:
+ case BIO_CTRL_FLUSH:
+ ret=1;
+ break;
+ default:
+ ret=0;
+ break;
+ }
+ return(ret);
+ }
+
+static int fd_puts(BIO *bp, const char *str)
+ {
+ int n,ret;
+
+ n=strlen(str);
+ ret=fd_write(bp,str,n);
+ return(ret);
+ }
+
+static int fd_gets(BIO *bp, char *buf, int size)
+ {
+ int ret=0;
+ char *ptr=buf;
+ char *end=buf+size-1;
+
+ while ( (ptr < end) && (fd_read(bp, ptr, 1) > 0) && (ptr[0] != '\n') )
+ ptr++;
+
+ ptr[0]='\0';
+
+ if (buf[0] != '\0')
+ ret=strlen(buf);
+ return(ret);
+ }
+
+int BIO_fd_should_retry(int i)
+ {
+ int err;
+
+ if ((i == 0) || (i == -1))
+ {
+ err=get_last_sys_error();
+
+#if defined(OPENSSL_SYS_WINDOWS) && 0 /* more microsoft stupidity? perhaps not? Ben 4/1/99 */
+ if ((i == -1) && (err == 0))
+ return(1);
+#endif
+
+ return(BIO_fd_non_fatal_error(err));
+ }
+ return(0);
+ }
+
+int BIO_fd_non_fatal_error(int err)
+ {
+ switch (err)
+ {
+
+#ifdef EWOULDBLOCK
+# ifdef WSAEWOULDBLOCK
+# if WSAEWOULDBLOCK != EWOULDBLOCK
+ case EWOULDBLOCK:
+# endif
+# else
+ case EWOULDBLOCK:
+# endif
+#endif
+
+#if defined(ENOTCONN)
+ case ENOTCONN:
+#endif
+
+#ifdef EINTR
+ case EINTR:
+#endif
+
+#ifdef EAGAIN
+#if EWOULDBLOCK != EAGAIN
+ case EAGAIN:
+# endif
+#endif
+
+#ifdef EPROTO
+ case EPROTO:
+#endif
+
+#ifdef EINPROGRESS
+ case EINPROGRESS:
+#endif
+
+#ifdef EALREADY
+ case EALREADY:
+#endif
+ return(1);
+ /* break; */
+ default:
+ break;
+ }
+ return(0);
+ }
+#endif
projects / openssl.git / blobdiff