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 +1,87 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLOPT_UNRESTRICTED_AUTH
+Section: 3
+Source: libcurl
+See-also:
+  - CURLINFO_REDIRECT_COUNT (3)
+  - CURLOPT_FOLLOWLOCATION (3)
+  - CURLOPT_MAXREDIRS (3)
+  - CURLOPT_REDIR_PROTOCOLS_STR (3)
+  - CURLOPT_USERPWD (3)
+Protocol:
+  - HTTP
+Added-in: 7.10.4
+---
+
+# NAME
+
+CURLOPT_UNRESTRICTED_AUTH - send credentials to other hosts too
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_UNRESTRICTED_AUTH,
+                          long goahead);
+~~~
+
+# DESCRIPTION
+
+Set the long *gohead* parameter to 1L to make libcurl continue to send
+authentication (user+password) credentials or explicitly set cookie headers
+when following locations, even when the host changes. This option is
+meaningful only when setting CURLOPT_FOLLOWLOCATION(3).
+
+Further, when this option is not used or set to **0L**, libcurl does not send
+custom nor internally generated `Authentication:` or `Cookie:` headers on
+requests done to other hosts than the one used for the initial URL. Another
+host means that one or more of hostname, protocol scheme or port number
+changed.
+
+By default, libcurl only sends `Authentication:` or explicitly set `Cookie:`
+headers to the initial host as given in the original URL, to avoid leaking
+username + password to other sites.
+
+This option should be used with caution: when curl follows redirects it
+blindly fetches the next URL as instructed by the server. Setting
+CURLOPT_UNRESTRICTED_AUTH(3) to 1L makes curl trust the server and sends
+possibly sensitive credentials to any host the server points to, possibly
+again and again as the following hosts can keep redirecting to new hosts.
+
+Due to the way HTTP works, almost any header can be made to contain data a
+client may not want to pass on to other servers than the initially intended
+host and for all other headers than the two mentioned above, there is no
+protection from this happening when libcurl is told to follow redirects.
+
+# DEFAULT
+
+0
+
+# %PROTOCOLS%
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  CURL *curl = curl_easy_init();
+  if(curl) {
+    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
+    curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
+    curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1L);
+    curl_easy_perform(curl);
+  }
+}
+~~~
+
+# %AVAILABILITY%
+
+# RETURN VALUE
+
+curl_easy_setopt(3) returns a CURLcode indicating success or error.
+
+CURLE_OK (0) means everything was OK, non-zero means an error occurred, see
+libcurl-errors(3).