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-rw-r--r--lib/curl_path.c179
1 files changed, 179 insertions, 0 deletions
diff --git a/lib/curl_path.c b/lib/curl_path.c
new file mode 100644
index 000000000..cd6592096
--- /dev/null
+++ b/lib/curl_path.c
@@ -0,0 +1,179 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+#include <curl/curl.h>
+#include "curl_memory.h"
+#include "curl_path.h"
+#include "escape.h"
+#include "memdebug.h"
+
+/* figure out the path to work with in this particular request */
+CURLcode Curl_getworkingpath(struct connectdata *conn,
+ char *homedir, /* when SFTP is used */
+ char **path) /* returns the allocated
+ real path to work with */
+{
+ struct Curl_easy *data = conn->data;
+ char *real_path = NULL;
+ char *working_path;
+ size_t working_path_len;
+ CURLcode result =
+ Curl_urldecode(data, data->state.path, 0, &working_path,
+ &working_path_len, FALSE);
+ if(result)
+ return result;
+
+ /* Check for /~/, indicating relative to the user's home directory */
+ if(conn->handler->protocol & CURLPROTO_SCP) {
+ real_path = malloc(working_path_len + 1);
+ if(real_path == NULL) {
+ free(working_path);
+ return CURLE_OUT_OF_MEMORY;
+ }
+ if((working_path_len > 3) && (!memcmp(working_path, "/~/", 3)))
+ /* It is referenced to the home directory, so strip the leading '/~/' */
+ memcpy(real_path, working_path + 3, 4 + working_path_len-3);
+ else
+ memcpy(real_path, working_path, 1 + working_path_len);
+ }
+ else if(conn->handler->protocol & CURLPROTO_SFTP) {
+ if((working_path_len > 1) && (working_path[1] == '~')) {
+ size_t homelen = strlen(homedir);
+ real_path = malloc(homelen + working_path_len + 1);
+ if(real_path == NULL) {
+ free(working_path);
+ return CURLE_OUT_OF_MEMORY;
+ }
+ /* It is referenced to the home directory, so strip the
+ leading '/' */
+ memcpy(real_path, homedir, homelen);
+ real_path[homelen] = '/';
+ real_path[homelen + 1] = '\0';
+ if(working_path_len > 3) {
+ memcpy(real_path + homelen + 1, working_path + 3,
+ 1 + working_path_len -3);
+ }
+ }
+ else {
+ real_path = malloc(working_path_len + 1);
+ if(real_path == NULL) {
+ free(working_path);
+ return CURLE_OUT_OF_MEMORY;
+ }
+ memcpy(real_path, working_path, 1 + working_path_len);
+ }
+ }
+
+ free(working_path);
+
+ /* store the pointer for the caller to receive */
+ *path = real_path;
+
+ return CURLE_OK;
+}
+
+/* The get_pathname() function is being borrowed from OpenSSH sftp.c
+ version 4.6p1. */
+/*
+ * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+CURLcode Curl_get_pathname(const char **cpp, char **path)
+{
+ const char *cp = *cpp, *end;
+ char quot;
+ unsigned int i, j;
+ static const char WHITESPACE[] = " \t\r\n";
+
+ cp += strspn(cp, WHITESPACE);
+ if(!*cp) {
+ *cpp = cp;
+ *path = NULL;
+ return CURLE_QUOTE_ERROR;
+ }
+
+ *path = malloc(strlen(cp) + 1);
+ if(*path == NULL)
+ return CURLE_OUT_OF_MEMORY;
+
+ /* Check for quoted filenames */
+ if(*cp == '\"' || *cp == '\'') {
+ quot = *cp++;
+
+ /* Search for terminating quote, unescape some chars */
+ for(i = j = 0; i <= strlen(cp); i++) {
+ if(cp[i] == quot) { /* Found quote */
+ i++;
+ (*path)[j] = '\0';
+ break;
+ }
+ if(cp[i] == '\0') { /* End of string */
+ /*error("Unterminated quote");*/
+ goto fail;
+ }
+ if(cp[i] == '\\') { /* Escaped characters */
+ i++;
+ if(cp[i] != '\'' && cp[i] != '\"' &&
+ cp[i] != '\\') {
+ /*error("Bad escaped character '\\%c'",
+ cp[i]);*/
+ goto fail;
+ }
+ }
+ (*path)[j++] = cp[i];
+ }
+
+ if(j == 0) {
+ /*error("Empty quotes");*/
+ goto fail;
+ }
+ *cpp = cp + i + strspn(cp + i, WHITESPACE);
+ }
+ else {
+ /* Read to end of filename */
+ end = strpbrk(cp, WHITESPACE);
+ if(end == NULL)
+ end = strchr(cp, '\0');
+ *cpp = end + strspn(end, WHITESPACE);
+
+ memcpy(*path, cp, end - cp);
+ (*path)[end - cp] = '\0';
+ }
+ return CURLE_OK;
+
+ fail:
+ Curl_safefree(*path);
+ return CURLE_QUOTE_ERROR;
+}