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 +1,95 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLOPT_ISSUERCERT_BLOB
+Section: 3
+Source: libcurl
+See-also:
+  - CURLOPT_CRLFILE (3)
+  - CURLOPT_ISSUERCERT (3)
+  - CURLOPT_SSL_VERIFYHOST (3)
+  - CURLOPT_SSL_VERIFYPEER (3)
+Protocol:
+  - TLS
+TLS-backend:
+  - OpenSSL
+Added-in: 7.71.0
+---
+
+# NAME
+
+CURLOPT_ISSUERCERT_BLOB - issuer SSL certificate from memory blob
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ISSUERCERT_BLOB,
+                          struct curl_blob *stblob);
+~~~
+
+# DESCRIPTION
+
+Pass a pointer to a curl_blob structure, which contains information (pointer
+and size) about a memory block with binary data of a CA certificate in PEM
+format. If the option is set, an additional check against the peer certificate
+is performed to verify the issuer is indeed the one associated with the
+certificate provided by the option. This additional check is useful in
+multi-level PKI where one needs to enforce that the peer certificate is from a
+specific branch of the tree.
+
+This option should be used in combination with the
+CURLOPT_SSL_VERIFYPEER(3) option. Otherwise, the result of the check is
+not considered as failure.
+
+A specific error code (CURLE_SSL_ISSUER_ERROR) is defined with the option,
+which is returned if the setup of the SSL/TLS session has failed due to a
+mismatch with the issuer of peer certificate (CURLOPT_SSL_VERIFYPEER(3)
+has to be set too for the check to fail).
+
+If the blob is initialized with the flags member of struct curl_blob set to
+CURL_BLOB_COPY, the application does not have to keep the buffer around after
+setting this.
+
+This option is an alternative to CURLOPT_ISSUERCERT(3) which instead
+expects a filename as input.
+
+# DEFAULT
+
+NULL
+
+# %PROTOCOLS%
+
+# EXAMPLE
+
+~~~c
+
+extern char *certificateData;
+extern size_t filesize;
+
+int main(void)
+{
+  CURL *curl = curl_easy_init();
+  if(curl) {
+    CURLcode res;
+    struct curl_blob blob;
+    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
+    blob.data = certificateData;
+    blob.len = filesize;
+    blob.flags = CURL_BLOB_COPY;
+    curl_easy_setopt(curl, CURLOPT_ISSUERCERT_BLOB, &blob);
+    res = curl_easy_perform(curl);
+    curl_easy_cleanup(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).