From 11a6ed907d7d54a388ee1eb148803a326cee54f6 Mon Sep 17 00:00:00 2001
From: Andreas Schneider <mail@cynapses.org>
Date: Sat, 25 Jul 2009 11:35:33 +0200
Subject: Add sftp_symlink function.

---
 libssh/sftp.c | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)

(limited to 'libssh')

diff --git a/libssh/sftp.c b/libssh/sftp.c
index 4aa63c97..f0007d8c 100644
--- a/libssh/sftp.c
+++ b/libssh/sftp.c
@@ -2212,6 +2212,89 @@ int sftp_utimes(SFTP_SESSION *sftp, const char *file,
   return sftp_setstat(sftp, file, &attr);
 }
 
+int sftp_symlink(SFTP_SESSION *sftp, const char *target, const char *dest) {
+  STATUS_MESSAGE *status = NULL;
+  SFTP_MESSAGE *msg = NULL;
+  STRING *target_s;
+  STRING *dest_s;
+  BUFFER *buffer;
+  u32 id;
+
+  if (sftp == NULL || target == NULL || dest == NULL) {
+    return -1;
+  }
+
+  buffer = buffer_new();
+  if (buffer == NULL) {
+    return -1;
+  }
+
+  target_s = string_from_char(target);
+  if (target_s == NULL) {
+    buffer_free(buffer);
+    return -1;
+  }
+
+  dest_s = string_from_char(dest);
+  if (dest_s == NULL) {
+    string_free(target_s);
+    buffer_free(buffer);
+    return -1;
+  }
+
+  id = sftp_get_new_id(sftp);
+  if (buffer_add_u32(buffer, id) < 0 ||
+      buffer_add_ssh_string(buffer, target_s) < 0 ||
+      buffer_add_ssh_string(buffer, dest_s) < 0 ||
+      sftp_packet_write(sftp, SSH_FXP_SYMLINK, buffer) < 0) {
+    buffer_free(buffer);
+    string_free(dest_s);
+    string_free(target_s);
+    return -1;
+  }
+  buffer_free(buffer);
+  string_free(dest_s);
+  string_free(target_s);
+
+  while (msg == NULL) {
+    if (sftp_read_and_dispatch(sftp) < 0) {
+      return -1;
+    }
+    msg = sftp_dequeue(sftp, id);
+  }
+
+  /* By specification, this command only returns SSH_FXP_STATUS */
+  if (msg->packet_type == SSH_FXP_STATUS) {
+    status = parse_status_msg(msg);
+    sftp_message_free(msg);
+    if (status == NULL) {
+      return -1;
+    }
+    sftp_set_error(sftp, status->status);
+    switch (status->status) {
+      case SSH_FX_OK:
+        status_msg_free(status);
+        return 0;
+      default:
+        break;
+    }
+    /*
+     * The status should be SSH_FX_OK if the command was successful, if it
+     * didn't, then there was an error
+     */
+    ssh_set_error(sftp->session, SSH_REQUEST_DENIED,
+        "SFTP server: %s", status->errormsg);
+    status_msg_free(status);
+    return -1;
+  } else {
+    ssh_set_error(sftp->session, SSH_FATAL,
+        "Received message %d when attempting to set stats", msg->packet_type);
+    sftp_message_free(msg);
+  }
+
+  return -1;
+}
+
 /* another code written by Nick */
 char *sftp_canonicalize_path(SFTP_SESSION *sftp, const char *path) {
   STATUS_MESSAGE *status = NULL;
-- 
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