#ifdef WITH_OPENSSL
#include <sys/types.h>
-#include <sys/socket.h>
-#ifdef HAVE_SYS_UN_H
-# include <sys/un.h>
-#endif
-
-#include <netinet/in.h>
-#include <arpa/inet.h>
#include <errno.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
-#include <stddef.h> /* for offsetof */
#include <openssl/rand.h>
#include <openssl/crypto.h>
*/
#ifndef OPENSSL_PRNG_ONLY
-/*
- * Collect 'len' bytes of entropy into 'buf' from PRNGD/EGD daemon
- * listening either on 'tcp_port', or via Unix domain socket at *
- * 'socket_path'.
- * Either a non-zero tcp_port or a non-null socket_path must be
- * supplied.
- * Returns 0 on success, -1 on error
- */
-int
-get_random_bytes_prngd(unsigned char *buf, int len,
- unsigned short tcp_port, char *socket_path)
-{
- int fd, addr_len, rval, errors;
- u_char msg[2];
- struct sockaddr_storage addr;
- struct sockaddr_in *addr_in = (struct sockaddr_in *)&addr;
- struct sockaddr_un *addr_un = (struct sockaddr_un *)&addr;
- sshsig_t old_sigpipe;
-
- /* Sanity checks */
- if (socket_path == NULL && tcp_port == 0)
- fatal("You must specify a port or a socket");
- if (socket_path != NULL &&
- strlen(socket_path) >= sizeof(addr_un->sun_path))
- fatal("Random pool path is too long");
- if (len <= 0 || len > 255)
- fatal("Too many bytes (%d) to read from PRNGD", len);
-
- memset(&addr, '\0', sizeof(addr));
-
- if (tcp_port != 0) {
- addr_in->sin_family = AF_INET;
- addr_in->sin_addr.s_addr = htonl(INADDR_LOOPBACK);
- addr_in->sin_port = htons(tcp_port);
- addr_len = sizeof(*addr_in);
- } else {
- addr_un->sun_family = AF_UNIX;
- strlcpy(addr_un->sun_path, socket_path,
- sizeof(addr_un->sun_path));
- addr_len = offsetof(struct sockaddr_un, sun_path) +
- strlen(socket_path) + 1;
- }
-
- old_sigpipe = ssh_signal(SIGPIPE, SIG_IGN);
-
- errors = 0;
- rval = -1;
-reopen:
- fd = socket(addr.ss_family, SOCK_STREAM, 0);
- if (fd == -1) {
- error("Couldn't create socket: %s", strerror(errno));
- goto done;
- }
-
- if (connect(fd, (struct sockaddr*)&addr, addr_len) == -1) {
- if (tcp_port != 0) {
- error("Couldn't connect to PRNGD port %d: %s",
- tcp_port, strerror(errno));
- } else {
- error("Couldn't connect to PRNGD socket \"%s\": %s",
- addr_un->sun_path, strerror(errno));
- }
- goto done;
- }
-
- /* Send blocking read request to PRNGD */
- msg[0] = 0x02;
- msg[1] = len;
-
- if (atomicio(vwrite, fd, msg, sizeof(msg)) != sizeof(msg)) {
- if (errno == EPIPE && errors < 10) {
- close(fd);
- errors++;
- goto reopen;
- }
- error("Couldn't write to PRNGD socket: %s",
- strerror(errno));
- goto done;
- }
-
- if (atomicio(read, fd, buf, len) != (size_t)len) {
- if (errno == EPIPE && errors < 10) {
- close(fd);
- errors++;
- goto reopen;
- }
- error("Couldn't read from PRNGD socket: %s",
- strerror(errno));
- goto done;
- }
-
- rval = 0;
-done:
- ssh_signal(SIGPIPE, old_sigpipe);
- if (fd != -1)
- close(fd);
- return rval;
-}
-
-static int
-seed_from_prngd(unsigned char *buf, size_t bytes)
-{
-#ifdef PRNGD_PORT
- debug("trying egd/prngd port %d", PRNGD_PORT);
- if (get_random_bytes_prngd(buf, bytes, PRNGD_PORT, NULL) == 0)
- return 0;
-#endif
-#ifdef PRNGD_SOCKET
- debug("trying egd/prngd socket %s", PRNGD_SOCKET);
- if (get_random_bytes_prngd(buf, bytes, 0, PRNGD_SOCKET) == 0)
- return 0;
-#endif
- return -1;
-}
-
void
rexec_send_rng_seed(struct sshbuf *m)
{
--- /dev/null
+/*
+ * Copyright (c) 2001 Damien Miller. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "includes.h"
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#ifdef HAVE_SYS_UN_H
+# include <sys/un.h>
+#endif
+
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <errno.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stddef.h> /* for offsetof */
+
+#include "atomicio.h"
+#include "misc.h"
+#include "log.h"
+
+/*
+ * EGD/PRNGD interface.
+ *
+ * Collect 'len' bytes of entropy into 'buf' from PRNGD/EGD daemon
+ * listening either on 'tcp_port', or via Unix domain socket at *
+ * 'socket_path'.
+ * Either a non-zero tcp_port or a non-null socket_path must be
+ * supplied.
+ * Returns 0 on success, -1 on error
+ */
+static int
+get_random_bytes_prngd(unsigned char *buf, int len,
+ unsigned short tcp_port, char *socket_path)
+{
+ int fd, addr_len, rval, errors;
+ u_char msg[2];
+ struct sockaddr_storage addr;
+ struct sockaddr_in *addr_in = (struct sockaddr_in *)&addr;
+ struct sockaddr_un *addr_un = (struct sockaddr_un *)&addr;
+ sshsig_t old_sigpipe;
+
+ /* Sanity checks */
+ if (socket_path == NULL && tcp_port == 0)
+ fatal("You must specify a port or a socket");
+ if (socket_path != NULL &&
+ strlen(socket_path) >= sizeof(addr_un->sun_path))
+ fatal("Random pool path is too long");
+ if (len <= 0 || len > 255)
+ fatal("Too many bytes (%d) to read from PRNGD", len);
+
+ memset(&addr, '\0', sizeof(addr));
+
+ if (tcp_port != 0) {
+ addr_in->sin_family = AF_INET;
+ addr_in->sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+ addr_in->sin_port = htons(tcp_port);
+ addr_len = sizeof(*addr_in);
+ } else {
+ addr_un->sun_family = AF_UNIX;
+ strlcpy(addr_un->sun_path, socket_path,
+ sizeof(addr_un->sun_path));
+ addr_len = offsetof(struct sockaddr_un, sun_path) +
+ strlen(socket_path) + 1;
+ }
+
+ old_sigpipe = ssh_signal(SIGPIPE, SIG_IGN);
+
+ errors = 0;
+ rval = -1;
+reopen:
+ fd = socket(addr.ss_family, SOCK_STREAM, 0);
+ if (fd == -1) {
+ error("Couldn't create socket: %s", strerror(errno));
+ goto done;
+ }
+
+ if (connect(fd, (struct sockaddr*)&addr, addr_len) == -1) {
+ if (tcp_port != 0) {
+ error("Couldn't connect to PRNGD port %d: %s",
+ tcp_port, strerror(errno));
+ } else {
+ error("Couldn't connect to PRNGD socket \"%s\": %s",
+ addr_un->sun_path, strerror(errno));
+ }
+ goto done;
+ }
+
+ /* Send blocking read request to PRNGD */
+ msg[0] = 0x02;
+ msg[1] = len;
+
+ if (atomicio(vwrite, fd, msg, sizeof(msg)) != sizeof(msg)) {
+ if (errno == EPIPE && errors < 10) {
+ close(fd);
+ errors++;
+ goto reopen;
+ }
+ error("Couldn't write to PRNGD socket: %s",
+ strerror(errno));
+ goto done;
+ }
+
+ if (atomicio(read, fd, buf, len) != (size_t)len) {
+ if (errno == EPIPE && errors < 10) {
+ close(fd);
+ errors++;
+ goto reopen;
+ }
+ error("Couldn't read from PRNGD socket: %s",
+ strerror(errno));
+ goto done;
+ }
+
+ rval = 0;
+done:
+ ssh_signal(SIGPIPE, old_sigpipe);
+ if (fd != -1)
+ close(fd);
+ return rval;
+}
+
+int
+seed_from_prngd(unsigned char *buf, size_t bytes)
+{
+#ifdef PRNGD_PORT
+ debug("trying egd/prngd port %d", PRNGD_PORT);
+ if (get_random_bytes_prngd(buf, bytes, PRNGD_PORT, NULL) == 0)
+ return 0;
+#endif
+#ifdef PRNGD_SOCKET
+ debug("trying egd/prngd socket %s", PRNGD_SOCKET);
+ if (get_random_bytes_prngd(buf, bytes, 0, PRNGD_SOCKET) == 0)
+ return 0;
+#endif
+ return -1;
+}
projects / thirdparty / openssh-portable.git / commitdiff
