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 +1,106 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLOPT_MIME_OPTIONS
+Section: 3
+Source: libcurl
+See-also:
+  - CURLOPT_HTTPPOST (3)
+  - CURLOPT_MIMEPOST (3)
+Protocol:
+  - HTTP
+  - IMAP
+  - SMTP
+Added-in: 7.81.0
+---
+
+# NAME
+
+CURLOPT_MIME_OPTIONS - set MIME option flags
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MIME_OPTIONS, long options);
+~~~
+
+# DESCRIPTION
+
+Pass a long that holds a bitmask of options. Each bit is a boolean flag used
+while encoding a MIME tree or multipart form data.
+
+Available bits are:
+
+## CURLMIMEOPT_FORMESCAPE
+
+Tells libcurl to escape multipart form field and filenames using the
+backslash-escaping algorithm rather than percent-encoding (HTTP only).
+
+Backslash-escaping consists in preceding backslashes and double quotes with
+a backslash. Percent encoding maps all occurrences of double quote,
+carriage return and line feed to %22, %0D and %0A respectively.
+
+Before version 7.81.0, percent-encoding was never applied.
+
+HTTP browsers used to do backslash-escaping in the past but have over time
+transitioned to use percent-encoding. This option allows one to address
+server-side applications that have not yet have been converted.
+
+As an example, consider field or filename *strangename"kind*. When the
+containing multipart form is sent, this is normally transmitted as
+*strangename%22kind*. When this option is set, it is sent as
+*strangename"kind*.
+
+# DEFAULT
+
+0, meaning disabled.
+
+# %PROTOCOLS%
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  CURL *curl = curl_easy_init();
+  curl_mime *form = NULL;
+
+  if(curl) {
+    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
+    curl_easy_setopt(curl, CURLOPT_MIME_OPTIONS, CURLMIMEOPT_FORMESCAPE);
+
+    form = curl_mime_init(curl);
+    if(form) {
+      curl_mimepart *part = curl_mime_addpart(form);
+
+      if(part) {
+        curl_mime_filedata(part, "strange\\file\\name");
+        curl_mime_name(part, "strange\"field\"name");
+        curl_easy_setopt(curl, CURLOPT_MIMEPOST, form);
+
+        /* Perform the request */
+        curl_easy_perform(curl);
+      }
+    }
+
+    curl_easy_cleanup(curl);
+    curl_mime_free(form);
+  }
+}
+~~~
+
+# HISTORY
+
+**CURLMIMEOPT_FORMESCAPE** macro became `long` type in 8.16.0, prior to this
+version a `long` cast was necessary when passed to curl_easy_setopt(3).
+
+# %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).