Exposed the CURLOPT_CAINFO_BLOB libcurl option. (#420)

See also https://curl.se/libcurl/c/CURLOPT_CAINFO_BLOB.html

Co-authored-by: Andrey Petrov <apetrov@vmware.com>

Author: darkprokoba

curl-sys/lib.rs

@@ -607,6 +607,8 @@ pub const CURLOPT_ISSUERCERT_BLOB: CURLoption = CURLOPTTYPE_BLOB + 295;
 
 pub const CURLOPT_AWS_SIGV4: CURLoption = CURLOPTTYPE_OBJECTPOINT + 305;
 
+pub const CURLOPT_CAINFO_BLOB: CURLoption = CURLOPTTYPE_BLOB + 309;
+
 pub const CURL_IPRESOLVE_WHATEVER: c_int = 0;
 pub const CURL_IPRESOLVE_V4: c_int = 1;
 pub const CURL_IPRESOLVE_V6: c_int = 2;

src/easy/handle.rs

@@ -1003,6 +1003,11 @@ impl Easy {
         self.inner.key_password(password)
     }
 
+    /// Same as [`Easy2::ssl_cainfo_blob`](struct.Easy2.html#method.ssl_cainfo_blob)
+    pub fn ssl_cainfo_blob(&mut self, blob: &[u8]) -> Result<(), Error> {
+        self.inner.ssl_cainfo_blob(blob)
+    }
+
     /// Same as [`Easy2::ssl_engine`](struct.Easy2.html#method.ssl_engine)
     pub fn ssl_engine(&mut self, engine: &str) -> Result<(), Error> {
         self.inner.ssl_engine(engine)

src/easy/handler.rs

@@ -2073,6 +2073,18 @@ impl<H> Easy2<H> {
         self.setopt_str(curl_sys::CURLOPT_KEYPASSWD, &password)
     }
 
+    /// Set the SSL Certificate Authorities using an in-memory blob.
+    ///
+    /// The specified byte buffer should contain the binary content of one
+    /// or more PEM-encoded CA certificates, which will be copied into
+    /// the handle.
+    ///
+    /// By default this option is not set and corresponds to
+    /// `CURLOPT_CAINFO_BLOB`.
+    pub fn ssl_cainfo_blob(&mut self, blob: &[u8]) -> Result<(), Error> {
+        self.setopt_blob(curl_sys::CURLOPT_CAINFO_BLOB, blob)
+    }
+
     /// Set the SSL engine identifier.
     ///
     /// This will be used as the identifier for the crypto engine you want to

systest/build.rs

@@ -66,6 +66,7 @@ fn main() {
         if version < 77 {
             match s {
                 "CURLVERSION_TENTH"
+                | "CURLOPT_CAINFO_BLOB"
                 | "CURLVERSION_NOW"
                 | "CURL_VERSION_ALTSVC"
                 | "CURL_VERSION_ZSTD"