Update networking layer w/ CURL and emscripten impl

2025-11-08 01:50:36 +11:00
parent a17925904d
commit f6874dc55a
4105 changed files with 694617 additions and 179 deletions
@@ -0,0 +1,141 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 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.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.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+#include "tool_setup.h"
+
+#if defined(_WIN32) && !defined(UNDER_CE)
+#  include <direct.h>
+#endif
+
+#include "tool_dirhie.h"
+#include "tool_msgs.h"
+
+#include "memdebug.h" /* keep this as LAST include */
+
+#if defined(_WIN32) || (defined(MSDOS) && !defined(__DJGPP__))
+#  define mkdir(x,y) (mkdir)((x))
+#  ifndef F_OK
+#  define F_OK 0
+#  endif
+#endif
+
+static void show_dir_errno(const char *name)
+{
+  switch(errno) {
+#ifdef EACCES
+  /* !checksrc! disable ERRNOVAR 1 */
+  case EACCES:
+    errorf("You do not have permission to create %s", name);
+    break;
+#endif
+#ifdef ENAMETOOLONG
+  case ENAMETOOLONG:
+    errorf("The directory name %s is too long", name);
+    break;
+#endif
+#ifdef EROFS
+  case EROFS:
+    errorf("%s resides on a read-only file system", name);
+    break;
+#endif
+#ifdef ENOSPC
+  case ENOSPC:
+    errorf("No space left on the file system that will "
+           "contain the directory %s", name);
+    break;
+#endif
+#ifdef EDQUOT
+  case EDQUOT:
+    errorf("Cannot create directory %s because you "
+           "exceeded your quota", name);
+    break;
+#endif
+  default:
+    errorf("Error creating directory %s", name);
+    break;
+  }
+}
+
+/*
+ * Create the needed directory hierarchy recursively in order to save
+ *  multi-GETs in file output, ie:
+ *  curl "http://example.org/dir[1-5]/file[1-5].txt" -o "dir#1/file#2.txt"
+ *  should create all the dir* automagically
+ */
+
+#if defined(_WIN32) || defined(__DJGPP__)
+/* systems that may use either or when specifying a path */
+#define PATH_DELIMITERS "\\/"
+#else
+#define PATH_DELIMITERS DIR_CHAR
+#endif
+
+CURLcode create_dir_hierarchy(const char *outfile)
+{
+  CURLcode result = CURLE_OK;
+  size_t outlen = strlen(outfile);
+  struct dynbuf dirbuf;
+
+  curlx_dyn_init(&dirbuf, outlen + 1);
+
+  while(*outfile) {
+    bool skip = FALSE;
+    size_t seplen = strspn(outfile, PATH_DELIMITERS);
+    size_t len = strcspn(&outfile[seplen], PATH_DELIMITERS);
+
+    /* the last path component is the file and it ends with a null byte */
+    if(!outfile[len + seplen])
+      break;
+
+#if defined(_WIN32) || defined(MSDOS)
+    if(!curlx_dyn_len(&dirbuf)) {
+      /* Skip creating a drive's current directory. It may seem as though that
+         would harmlessly fail but it could be a corner case if X: did not
+         exist, since we would be creating it erroneously. eg if outfile is
+         X:\foo\bar\filename then do not mkdir X: This logic takes into
+         account unsupported drives !:, 1:, etc. */
+      if(len > 1 && (outfile[1]==':'))
+        skip = TRUE;
+    }
+#endif
+    /* insert the leading separators (possibly plural) plus the following
+       directory name */
+    result = curlx_dyn_addn(&dirbuf, outfile, seplen + len);
+    if(result)
+      return result;
+
+    /* Create directory. Ignore access denied error to allow traversal. */
+    /* !checksrc! disable ERRNOVAR 1 */
+    if(!skip && (mkdir(curlx_dyn_ptr(&dirbuf), (mode_t)0000750) == -1) &&
+       (errno != EACCES) && (errno != EEXIST)) {
+      show_dir_errno(curlx_dyn_ptr(&dirbuf));
+      result = CURLE_WRITE_ERROR;
+      break; /* get out of loop */
+    }
+    outfile += len + seplen;
+  }
+
+  curlx_dyn_free(&dirbuf);
+
+  return result;
+}