cleanup copy codes

1 files changed, 37 insertions, 0 deletions

diff --git a/src/ssh.c b/src/ssh.c
index 31a679f..536b63e 100644
--- a/src/ssh.c
+++ b/src/ssh.c
@@ -243,3 +243,40 @@ void ssh_sftp_close(sftp_session sftp)
         ssh_disconnect(ssh);
         ssh_free(ssh);
 }
+
+
+/* from libssh/src/channels.c:
+ *
+ * All implementations MUST be able to process packets with an
+ * uncompressed payload length of 32768 bytes or less and a total packet
+ * size of 35000 bytes or less.
+ */
+#define CHANNEL_MAX_PACKET 32768
+
+int sftp_write2(sftp_file sf, const void *buf, size_t len)
+{
+        int n, ret, nbytes;
+
+        for (nbytes = 0; nbytes < len;) {
+                ret = sftp_write(sf, buf + nbytes,
+                                 min(len - nbytes, CHANNEL_MAX_PACKET));
+                if (ret < 0)
+                        return ret;
+                nbytes += ret;
+        }
+        return nbytes;
+}
+
+int sftp_read2(sftp_file sf, void *buf, size_t len)
+{
+        int n, ret, nbytes;
+
+        for (nbytes = 0; nbytes < len;) {
+                ret = sftp_read(sf, buf + nbytes,
+                                min(len - nbytes, CHANNEL_MAX_PACKET));
+                if (ret < 0)
+                        return ret;
+                nbytes += ret;
+        }
+        return nbytes;
+}