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 +1,128 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  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 "../curl_setup.h"
+
+/*
+ * curlx_winapi_strerror:
+ * Variant of curlx_strerror if the error code is definitely Windows API.
+ */
+#ifdef _WIN32
+#include "winapi.h"
+
+#ifndef WITHOUT_LIBCURL
+#include <curl/mprintf.h>
+#define SNPRINTF curl_msnprintf
+#else
+/* when built for the test servers */
+
+/* adjust for old MSVC */
+#if defined(_MSC_VER) && (_MSC_VER < 1900)
+#define SNPRINTF _snprintf
+#else
+#define SNPRINTF snprintf
+#endif
+#endif /* !WITHOUT_LIBCURL */
+
+/* This is a helper function for curlx_strerror that converts Windows API error
+ * codes (GetLastError) to error messages.
+ * Returns NULL if no error message was found for error code.
+ */
+const char *curlx_get_winapi_error(DWORD err, char *buf, size_t buflen)
+{
+  char *p;
+  wchar_t wbuf[256];
+
+  if(!buflen)
+    return NULL;
+
+  *buf = '\0';
+  *wbuf = L'\0';
+
+  /* We return the local codepage version of the error string because if it is
+     output to the user's terminal it will likely be with functions which
+     expect the local codepage (eg fprintf, failf, infof).
+     FormatMessageW -> wcstombs is used for Windows CE compatibility. */
+  if(FormatMessageW((FORMAT_MESSAGE_FROM_SYSTEM |
+                     FORMAT_MESSAGE_IGNORE_INSERTS), NULL, err,
+                    LANG_NEUTRAL, wbuf, CURL_ARRAYSIZE(wbuf), NULL)) {
+    size_t written = wcstombs(buf, wbuf, buflen - 1);
+    if(written != (size_t)-1)
+      buf[written] = '\0';
+    else
+      *buf = '\0';
+  }
+
+  /* Truncate multiple lines */
+  p = strchr(buf, '\n');
+  if(p) {
+    if(p > buf && *(p-1) == '\r')
+      *(p-1) = '\0';
+    else
+      *p = '\0';
+  }
+
+  return *buf ? buf : NULL;
+}
+
+const char *curlx_winapi_strerror(DWORD err, char *buf, size_t buflen)
+{
+  DWORD old_win_err = GetLastError();
+  int old_errno = errno;
+
+  if(!buflen)
+    return NULL;
+
+  *buf = '\0';
+
+#ifndef CURL_DISABLE_VERBOSE_STRINGS
+  if(!curlx_get_winapi_error(err, buf, buflen)) {
+#if defined(__GNUC__) && __GNUC__ >= 7
+#pragma GCC diagnostic push
+#pragma GCC diagnostic warning "-Wformat-truncation=1"
+#endif
+    /* some GCC compilers cause false positive warnings if we allow this
+       warning */
+    SNPRINTF(buf, buflen, "Unknown error %lu (0x%08lx)", err, err);
+#if defined(__GNUC__) && __GNUC__ >= 7
+#pragma GCC diagnostic pop
+#endif
+
+  }
+#else
+  {
+    const char *txt = (err == ERROR_SUCCESS) ? "No error" : "Error";
+    if(strlen(txt) < buflen)
+      strcpy(buf, txt);
+  }
+#endif
+
+  if(errno != old_errno)
+    CURL_SETERRNO(old_errno);
+
+  if(old_win_err != GetLastError())
+    SetLastError(old_win_err);
+
+  return buf;
+}
+#endif /* _WIN32 */