options: API for meta-data about easy options

 const struct curl_easyoption *curl_easy_option_by_name(const char *name);

 const struct curl_easyoption *curl_easy_option_by_id (CURLoption id);

 const struct curl_easyoption *
 curl_easy_option_next(const struct curl_easyoption *prev);

The purpose is to provide detailed enough information to allow for
example libcurl bindings to get option information at run-time about
what easy options that exist and what arguments they expect.

Assisted-by: Jeroen Ooms
Closes #5365

22 files changed, 1019 insertions, 58 deletions

diff --git a/docs/libcurl/Makefile.inc b/docs/libcurl/Makefile.inc
index 332056a19..fb7ea89a9 100644
--- a/docs/libcurl/Makefile.inc
+++ b/docs/libcurl/Makefile.inc
@@ -28,6 +28,9 @@ man_MANS = \
  curl_easy_escape.3 \
  curl_easy_getinfo.3 \
  curl_easy_init.3 \
+ curl_easy_option_by_id.3 \
+ curl_easy_option_by_name.3 \
+ curl_easy_option_next.3 \
  curl_easy_pause.3 \
  curl_easy_perform.3 \
  curl_easy_recv.3 \
diff --git a/docs/libcurl/curl_easy_option_by_id.3 b/docs/libcurl/curl_easy_option_by_id.3
new file mode 100644
index 000000000..e8130faf8
--- /dev/null
+++ b/docs/libcurl/curl_easy_option_by_id.3
@@ -0,0 +1,46 @@
+.\" **************************************************************************
+.\" *                                  _   _ ____  _
+.\" *  Project                     ___| | | |  _ \| |
+.\" *                             / __| | | | |_) | |
+.\" *                            | (__| |_| |  _ <| |___
+.\" *                             \___|\___/|_| \_\_____|
+.\" *
+.\" * Copyright (C) 1998 - 2020, 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.haxx.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.
+.\" *
+.\" **************************************************************************
+.TH curl_easy_option_by_id 3 "15 May 2020" "libcurl 7.71.0" "libcurl Manual"
+.SH NAME
+curl_easy_option_by_id - find an easy setopt option by id
+.SH SYNOPSIS
+.nf
+#include <curl/curl.h>
+
+const struct curl_easyoption *curl_easy_option_by_id(CURLoption id);
+.fi
+.SH DESCRIPTION
+Given a CURLoption \fBid\fP, this function returns a pointer to the
+curl_easyoption struct, holding information about the
+\fIcurl_easy_setopt(3)\fP option using that id. The option id is the CURLOPT_
+prefix ones provided in the standard curl/curl.h header file. This function
+will return the non-aliases version for the cases where there is an alias
+function as well.
+
+If libcurl has no option with the given id, this function returns NULL.
+.SH AVAILABILITY
+This function was added in libcurl 7.71.0
+.SH RETURN VALUE
+A pointer to the curl_easyoption struct for the option or NULL.
+.SH "SEE ALSO"
+.BR curl_easy_option_by_name "(3)," curl_easy_option_next "(3),"
+.BR curl_easy_setopt "(3),"
diff --git a/docs/libcurl/curl_easy_option_by_name.3 b/docs/libcurl/curl_easy_option_by_name.3
new file mode 100644
index 000000000..cc9ce3885
--- /dev/null
+++ b/docs/libcurl/curl_easy_option_by_name.3
@@ -0,0 +1,44 @@
+.\" **************************************************************************
+.\" *                                  _   _ ____  _
+.\" *  Project                     ___| | | |  _ \| |
+.\" *                             / __| | | | |_) | |
+.\" *                            | (__| |_| |  _ <| |___
+.\" *                             \___|\___/|_| \_\_____|
+.\" *
+.\" * Copyright (C) 1998 - 2020, 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.haxx.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.
+.\" *
+.\" **************************************************************************
+.TH curl_easy_option_by_name 3 "15 May 2020" "libcurl 7.71.0" "libcurl Manual"
+.SH NAME
+curl_easy_option_by_name - find an easy setopt option by name
+.SH SYNOPSIS
+.nf
+#include <curl/curl.h>
+
+const struct curl_easyoption *curl_easy_option_by_name(const char *name);
+.fi
+.SH DESCRIPTION
+Given a \fBname\fP, this function returns a pointer to the curl_easyoption
+struct, holding information about the \fIcurl_easy_setopt(3)\fP option using
+that name. The name should be specified without the "CURLOPT_" prefix and the
+name comparison is made case insensitive.
+
+If libcurl has no option with the given name, this function returns NULL.
+.SH AVAILABILITY
+This function was added in libcurl 7.71.0
+.SH RETURN VALUE
+A pointer to the curl_easyoption struct for the option or NULL.
+.SH "SEE ALSO"
+.BR curl_easy_option_next "(3)," curl_easy_option_by_id "(3),"
+.BR curl_easy_setopt "(3),"
diff --git a/docs/libcurl/curl_easy_option_next.3 b/docs/libcurl/curl_easy_option_next.3
new file mode 100644
index 000000000..732e8d7cd
--- /dev/null
+++ b/docs/libcurl/curl_easy_option_next.3
@@ -0,0 +1,74 @@
+.\" **************************************************************************
+.\" *                                  _   _ ____  _
+.\" *  Project                     ___| | | |  _ \| |
+.\" *                             / __| | | | |_) | |
+.\" *                            | (__| |_| |  _ <| |___
+.\" *                             \___|\___/|_| \_\_____|
+.\" *
+.\" * Copyright (C) 1998 - 2020, 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.haxx.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.
+.\" *
+.\" **************************************************************************
+.TH curl_easy_option_next 3 "15 May 2020" "libcurl 7.71.0" "libcurl Manual"
+.SH NAME
+curl_easy_option_next - iterate over easy setopt options
+.SH SYNOPSIS
+.nf
+#include <curl/curl.h>
+
+typedef enum {
+  CURLOT_LONG,    /* long (a range of values) */
+  CURLOT_VALUES,  /*      (a defined set or bitmask) */
+  CURLOT_OFF_T,   /* curl_off_t (a range of values) */
+  CURLOT_OBJECT,  /* pointer (void *) */
+  CURLOT_STRING,  /*         (char * to zero terminated buffer) */
+  CURLOT_SLIST,   /*         (struct curl_slist *) */
+  CURLOT_CBPTR,   /*         (void * passed as-is to a callback) */
+  CURLOT_BLOB,    /* blob (struct curl_blob *) */
+  CURLOT_FUNCTION /* function pointer */
+} curl_easytype;
+
+/* The CURLOPTTYPE_* id ranges can still be used to figure out what type/size
+   to use for curl_easy_setopt() for the given id */
+struct curl_easyoption {
+  const char *name;
+  CURLoption id;
+  curl_easytype type;
+  unsigned int flags;
+};
+
+const struct curl_easyoption *
+curl_easy_option_next(const struct curl_easyoption *prev);
+.fi
+.SH DESCRIPTION
+This function returns a pointer to the first or the next curl_easyoption
+struct, providing an ability to iterate over all known options for
+\fIcurl_easy_setopt(3)\fP in this instance of libcurl.
+
+Pass a \fBNULL\fP argument as \fBprev\fP to get the first option returned, or
+pass in the current option to get the next one returned. If there is no more
+option to return, \fIcurl_easy_option_next(3)\fP returns NULL.
+
+The options returned by this functions are the ones known to this libcurl and
+information about what argument type they want.
+
+If the \fBCURLOT_FLAG_ALIAS\fP bit is set in the flags field, it means the
+name is provided for backwards compatibility as an alias.
+.SH AVAILABILITY
+This function was added in libcurl 7.71.0
+.SH RETURN VALUE
+A pointer to the curl_easyoption struct for the next option or NULL if no more
+options.
+.SH "SEE ALSO"
+.BR curl_easy_option_by_name "(3)," curl_easy_option_by_id "(3),"
+.BR curl_easy_setopt "(3),"
diff --git a/docs/libcurl/symbols-in-versions b/docs/libcurl/symbols-in-versions
index 0e2faacec..82a8e8b3d 100644
--- a/docs/libcurl/symbols-in-versions
+++ b/docs/libcurl/symbols-in-versions
@@ -352,12 +352,14 @@ CURLM_UNKNOWN_OPTION            7.15.4
 CURLM_WAKEUP_FAILURE            7.68.0
 CURLOPT                         7.69.0
 CURLOPTTYPE_BLOB                7.71.0
+CURLOPTTYPE_CBPOINT             7.73.0
 CURLOPTTYPE_FUNCTIONPOINT       7.1
 CURLOPTTYPE_LONG                7.1
 CURLOPTTYPE_OBJECTPOINT         7.1
 CURLOPTTYPE_OFF_T               7.11.0
 CURLOPTTYPE_SLISTPOINT          7.65.2
 CURLOPTTYPE_STRINGPOINT         7.46.0
+CURLOPTTYPE_VALUES              7.73.0
 CURLOPT_ABSTRACT_UNIX_SOCKET    7.53.0
 CURLOPT_ACCEPTTIMEOUT_MS        7.24.0
 CURLOPT_ACCEPT_ENCODING         7.21.6
@@ -520,8 +522,6 @@ CURLOPT_PROGRESSDATA            7.1
 CURLOPT_PROGRESSFUNCTION        7.1           7.32.0
 CURLOPT_PROTOCOLS               7.19.4
 CURLOPT_PROXY                   7.1
-CURLOPT_PROXY_ISSUERCERT        7.71.0
-CURLOPT_PROXY_ISSUERCERT_BLOB   7.71.0
 CURLOPT_PROXYAUTH               7.10.7
 CURLOPT_PROXYHEADER             7.37.0
 CURLOPT_PROXYPASSWORD           7.19.1
@@ -532,15 +532,17 @@ CURLOPT_PROXYUSERPWD            7.1
 CURLOPT_PROXY_CAINFO            7.52.0
 CURLOPT_PROXY_CAPATH            7.52.0
 CURLOPT_PROXY_CRLFILE           7.52.0
+CURLOPT_PROXY_ISSUERCERT        7.71.0
+CURLOPT_PROXY_ISSUERCERT_BLOB   7.71.0
 CURLOPT_PROXY_KEYPASSWD         7.52.0
 CURLOPT_PROXY_PINNEDPUBLICKEY   7.52.0
 CURLOPT_PROXY_SERVICE_NAME      7.43.0
 CURLOPT_PROXY_SSLCERT           7.52.0
-CURLOPT_PROXY_SSLCERT_BLOB      7.71.0
 CURLOPT_PROXY_SSLCERTTYPE       7.52.0
+CURLOPT_PROXY_SSLCERT_BLOB      7.71.0
 CURLOPT_PROXY_SSLKEY            7.52.0
-CURLOPT_PROXY_SSLKEY_BLOB       7.71.0
 CURLOPT_PROXY_SSLKEYTYPE        7.52.0
+CURLOPT_PROXY_SSLKEY_BLOB       7.71.0
 CURLOPT_PROXY_SSLVERSION        7.52.0
 CURLOPT_PROXY_SSL_CIPHER_LIST   7.52.0
 CURLOPT_PROXY_SSL_OPTIONS       7.52.0
@@ -601,15 +603,15 @@ CURLOPT_SSH_KNOWNHOSTS          7.19.6
 CURLOPT_SSH_PRIVATE_KEYFILE     7.16.1
 CURLOPT_SSH_PUBLIC_KEYFILE      7.16.1
 CURLOPT_SSLCERT                 7.1
-CURLOPT_SSLCERT_BLOB            7.71.0
 CURLOPT_SSLCERTPASSWD           7.1.1         7.17.0
 CURLOPT_SSLCERTTYPE             7.9.3
+CURLOPT_SSLCERT_BLOB            7.71.0
 CURLOPT_SSLENGINE               7.9.3
 CURLOPT_SSLENGINE_DEFAULT       7.9.3
 CURLOPT_SSLKEY                  7.9.3
-CURLOPT_SSLKEY_BLOB             7.71.0
 CURLOPT_SSLKEYPASSWD            7.9.3         7.17.0
 CURLOPT_SSLKEYTYPE              7.9.3
+CURLOPT_SSLKEY_BLOB             7.71.0
 CURLOPT_SSLVERSION              7.1
 CURLOPT_SSL_CIPHER_LIST         7.9
 CURLOPT_SSL_CTX_DATA            7.10.6
@@ -667,6 +669,15 @@ CURLOPT_WRITEINFO               7.1
 CURLOPT_XFERINFODATA            7.32.0
 CURLOPT_XFERINFOFUNCTION        7.32.0
 CURLOPT_XOAUTH2_BEARER          7.33.0
+CURLOT_BLOB                     7.73.0
+CURLOT_CBPTR                    7.73.0
+CURLOT_FUNCTION                 7.73.0
+CURLOT_LONG                     7.73.0
+CURLOT_OBJECT                   7.73.0
+CURLOT_OFF_T                    7.73.0
+CURLOT_SLIST                    7.73.0
+CURLOT_STRING                   7.73.0
+CURLOT_VALUES                   7.73.0
 CURLPAUSE_ALL                   7.18.0
 CURLPAUSE_CONT                  7.18.0
 CURLPAUSE_RECV                  7.18.0
@@ -792,9 +803,9 @@ CURLSSLOPT_ALLOW_BEAST          7.25.0
 CURLSSLOPT_NATIVE_CA            7.71.0
 CURLSSLOPT_NO_PARTIALCHAIN      7.68.0
 CURLSSLOPT_NO_REVOKE            7.44.0
+CURLSSLOPT_REVOKE_BEST_EFFORT   7.70.0
 CURLSSLSET_NO_BACKENDS          7.56.0
 CURLSSLSET_OK                   7.56.0
-CURLSSLOPT_REVOKE_BEST_EFFORT   7.70.0
 CURLSSLSET_TOO_LATE             7.56.0
 CURLSSLSET_UNKNOWN_BACKEND      7.56.0
 CURLUE_BAD_HANDLE               7.62.0
@@ -1007,9 +1018,9 @@ CURL_VERSION_SPNEGO             7.10.8
 CURL_VERSION_SSL                7.10
 CURL_VERSION_SSPI               7.13.2
 CURL_VERSION_TLSAUTH_SRP        7.21.4
+CURL_VERSION_UNICODE            7.72.0
 CURL_VERSION_UNIX_SOCKETS       7.40.0
 CURL_VERSION_ZSTD               7.72.0
-CURL_VERSION_UNICODE            7.72.0
 CURL_WAIT_POLLIN                7.28.0
 CURL_WAIT_POLLOUT               7.28.0
 CURL_WAIT_POLLPRI               7.28.0
diff --git a/include/curl/Makefile.am b/include/curl/Makefile.am
index a31f61b10..db96ace89 100644
--- a/include/curl/Makefile.am
+++ b/include/curl/Makefile.am
@@ -5,7 +5,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) 1998 - 2020, 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
@@ -21,7 +21,7 @@
 ###########################################################################
 pkginclude_HEADERS = \
   curl.h curlver.h easy.h mprintf.h stdcheaders.h multi.h \
-  typecheck-gcc.h system.h urlapi.h
+  typecheck-gcc.h system.h urlapi.h options.h
 
 pkgincludedir= $(includedir)/curl
 
diff --git a/include/curl/curl.h b/include/curl/curl.h
index 2366ef3c7..32d9bd4a7 100644
--- a/include/curl/curl.h
+++ b/include/curl/curl.h
@@ -1002,17 +1002,27 @@ typedef enum {
 
 #define CURLOPT(na,t,nu) na = t + nu
 
-/* handy aliases that make no run-time difference */
-#define CURLOPTTYPE_STRINGPOINT  CURLOPTTYPE_OBJECTPOINT
+/* CURLOPT aliases that make no run-time difference */
+
+/* 'char *' argument to a string with a trailing zero */
+#define CURLOPTTYPE_STRINGPOINT CURLOPTTYPE_OBJECTPOINT
+
+/* 'struct curl_slist *' argument */
 #define CURLOPTTYPE_SLISTPOINT  CURLOPTTYPE_OBJECTPOINT
 
+/* 'void *' argument passed untouched to callback */
+#define CURLOPTTYPE_CBPOINT     CURLOPTTYPE_OBJECTPOINT
+
+/* 'long' argument with a set of values/bitmask */
+#define CURLOPTTYPE_VALUES      CURLOPTTYPE_LONG
+
 /*
  * All CURLOPT_* values.
  */
 
 typedef enum {
   /* This is the FILE * or void * the regular output should be written to. */
-  CURLOPT(CURLOPT_WRITEDATA, CURLOPTTYPE_OBJECTPOINT, 1),
+  CURLOPT(CURLOPT_WRITEDATA, CURLOPTTYPE_CBPOINT, 1),
 
   /* The full URL to get/put */
   CURLOPT(CURLOPT_URL, CURLOPTTYPE_STRINGPOINT, 2),
@@ -1035,7 +1045,7 @@ typedef enum {
   /* not used */
 
   /* Specified file stream to upload from (use as input): */
-  CURLOPT(CURLOPT_READDATA, CURLOPTTYPE_OBJECTPOINT, 9),
+  CURLOPT(CURLOPT_READDATA, CURLOPTTYPE_CBPOINT, 9),
 
   /* Buffer to receive error messages in, must be at least CURL_ERROR_SIZE
    * bytes big. */
@@ -1120,7 +1130,7 @@ typedef enum {
 
   /* send FILE * or void * to store headers to, if you use a callback it
      is simply passed to the callback unmodified */
-  CURLOPT(CURLOPT_HEADERDATA, CURLOPTTYPE_OBJECTPOINT, 29),
+  CURLOPT(CURLOPT_HEADERDATA, CURLOPTTYPE_CBPOINT, 29),
 
   /* point to a file to read the initial cookies from, also enables
      "cookie awareness" */
@@ -1128,10 +1138,10 @@ typedef enum {
 
   /* What version to specifically try to use.
      See CURL_SSLVERSION defines below. */
-  CURLOPT(CURLOPT_SSLVERSION, CURLOPTTYPE_LONG, 32),
+  CURLOPT(CURLOPT_SSLVERSION, CURLOPTTYPE_VALUES, 32),
 
   /* What kind of HTTP time condition to use, see defines */
-  CURLOPT(CURLOPT_TIMECONDITION, CURLOPTTYPE_LONG, 33),
+  CURLOPT(CURLOPT_TIMECONDITION, CURLOPTTYPE_VALUES, 33),
 
   /* Time to use with the above condition. Specified in number of seconds
      since 1 Jan 1970 */
@@ -1185,7 +1195,7 @@ typedef enum {
 
   /* Specify whether to read the user+password from the .netrc or the URL.
    * This must be one of the CURL_NETRC_* enums below. */
-  CURLOPT(CURLOPT_NETRC, CURLOPTTYPE_LONG, 51),
+  CURLOPT(CURLOPT_NETRC, CURLOPTTYPE_VALUES, 51),
 
   /* use Location: Luke! */
   CURLOPT(CURLOPT_FOLLOWLOCATION, CURLOPTTYPE_LONG, 52),
@@ -1206,8 +1216,8 @@ typedef enum {
 
   /* Data passed to the CURLOPT_PROGRESSFUNCTION and CURLOPT_XFERINFOFUNCTION
      callbacks */
-  CURLOPT(CURLOPT_PROGRESSDATA, CURLOPTTYPE_OBJECTPOINT, 57),
-#define CURLOPT_XFERINFODATA CURLOPT_PROGRESSDATA
+  CURLOPT(CURLOPT_XFERINFODATA, CURLOPTTYPE_CBPOINT, 57),
+#define CURLOPT_PROGRESSDATA CURLOPT_XFERINFODATA
 
   /* We want the referrer field set automatically when following locations */
   CURLOPT(CURLOPT_AUTOREFERER, CURLOPTTYPE_LONG, 58),
@@ -1302,7 +1312,7 @@ typedef enum {
 
   /* Specify which HTTP version to use! This must be set to one of the
      CURL_HTTP_VERSION* enums set below. */
-  CURLOPT(CURLOPT_HTTP_VERSION, CURLOPTTYPE_LONG, 84),
+  CURLOPT(CURLOPT_HTTP_VERSION, CURLOPTTYPE_VALUES, 84),
 
   /* Specifically switch on or off the FTP engine's use of the EPSV command. By
      default, that one will always be attempted before the more traditional
@@ -1340,7 +1350,7 @@ typedef enum {
   CURLOPT(CURLOPT_DEBUGFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 94),
 
   /* set the data for the debug function */
-  CURLOPT(CURLOPT_DEBUGDATA, CURLOPTTYPE_OBJECTPOINT, 95),
+  CURLOPT(CURLOPT_DEBUGDATA, CURLOPTTYPE_CBPOINT, 95),
 
   /* mark this as start of a cookie session */
   CURLOPT(CURLOPT_COOKIESESSION, CURLOPTTYPE_LONG, 96),
@@ -1363,7 +1373,7 @@ typedef enum {
   /* indicates type of proxy. accepted values are CURLPROXY_HTTP (default),
      CURLPROXY_HTTPS, CURLPROXY_SOCKS4, CURLPROXY_SOCKS4A and
      CURLPROXY_SOCKS5. */
-  CURLOPT(CURLOPT_PROXYTYPE, CURLOPTTYPE_LONG, 101),
+  CURLOPT(CURLOPT_PROXYTYPE, CURLOPTTYPE_VALUES, 101),
 
   /* Set the Accept-Encoding string. Use this to tell a server you would like
      the response to be compressed. Before 7.21.6, this was known as
@@ -1389,7 +1399,7 @@ typedef enum {
   /* Set this to a bitmask value to enable the particular authentications
      methods you like. Use this in combination with CURLOPT_USERPWD.
      Note that setting multiple bits may cause extra network round-trips. */
-  CURLOPT(CURLOPT_HTTPAUTH, CURLOPTTYPE_LONG, 107),
+  CURLOPT(CURLOPT_HTTPAUTH, CURLOPTTYPE_VALUES, 107),
 
   /* Set the ssl context callback function, currently only for OpenSSL or
      WolfSSL ssl_ctx, or mbedTLS mbedtls_ssl_config in the second argument.
@@ -1398,7 +1408,7 @@ typedef enum {
 
   /* Set the userdata for the ssl context callback function's third
      argument */
-  CURLOPT(CURLOPT_SSL_CTX_DATA, CURLOPTTYPE_OBJECTPOINT, 109),
+  CURLOPT(CURLOPT_SSL_CTX_DATA, CURLOPTTYPE_CBPOINT, 109),
 
   /* FTP Option that causes missing dirs to be created on the remote server.
      In 7.19.4 we introduced the convenience enums for this option using the
@@ -1409,7 +1419,7 @@ typedef enum {
   /* Set this to a bitmask value to enable the particular authentications
      methods you like. Use this in combination with CURLOPT_PROXYUSERPWD.
      Note that setting multiple bits may cause extra network round-trips. */
-  CURLOPT(CURLOPT_PROXYAUTH, CURLOPTTYPE_LONG, 111),
+  CURLOPT(CURLOPT_PROXYAUTH, CURLOPTTYPE_VALUES, 111),
 
   /* FTP option that changes the timeout, in seconds, associated with
      getting a response.  This is different from transfer timeout time and
@@ -1421,7 +1431,7 @@ typedef enum {
   /* Set this option to one of the CURL_IPRESOLVE_* defines (see below) to
      tell libcurl to resolve names to those IP versions only. This only has
      affect on systems with support for more than one, i.e IPv4 _and_ IPv6. */
-  CURLOPT(CURLOPT_IPRESOLVE, CURLOPTTYPE_LONG, 113),
+  CURLOPT(CURLOPT_IPRESOLVE, CURLOPTTYPE_VALUES, 113),
 
   /* Set this option to limit the size of a file that will be downloaded from
      an HTTP or FTP server.
@@ -1456,7 +1466,7 @@ typedef enum {
      CURLUSESSL_CONTROL - SSL for the control connection or fail
      CURLUSESSL_ALL     - SSL for all communication or fail
   */
-  CURLOPT(CURLOPT_USE_SSL, CURLOPTTYPE_LONG, 119),
+  CURLOPT(CURLOPT_USE_SSL, CURLOPTTYPE_VALUES, 119),
 
   /* The _LARGE version of the standard POSTFIELDSIZE option */
   CURLOPT(CURLOPT_POSTFIELDSIZE_LARGE, CURLOPTTYPE_OFF_T, 120),
@@ -1482,10 +1492,10 @@ typedef enum {
      CURLFTPAUTH_SSL     - try "AUTH SSL" first, then TLS
      CURLFTPAUTH_TLS     - try "AUTH TLS" first, then SSL
   */
-  CURLOPT(CURLOPT_FTPSSLAUTH, CURLOPTTYPE_LONG, 129),
+  CURLOPT(CURLOPT_FTPSSLAUTH, CURLOPTTYPE_VALUES, 129),
 
   CURLOPT(CURLOPT_IOCTLFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 130),
-  CURLOPT(CURLOPT_IOCTLDATA, CURLOPTTYPE_OBJECTPOINT, 131),
+  CURLOPT(CURLOPT_IOCTLDATA, CURLOPTTYPE_CBPOINT, 131),
 
   /* 132 OBSOLETE. Gone in 7.16.0 */
   /* 133 OBSOLETE. Gone in 7.16.0 */
@@ -1508,7 +1518,7 @@ typedef enum {
 
   /* Select "file method" to use when doing FTP, see the curl_ftpmethod
      above. */
-  CURLOPT(CURLOPT_FTP_FILEMETHOD, CURLOPTTYPE_LONG, 138),
+  CURLOPT(CURLOPT_FTP_FILEMETHOD, CURLOPTTYPE_VALUES, 138),
 
   /* Local port number to bind the socket to */
   CURLOPT(CURLOPT_LOCALPORT, CURLOPTTYPE_LONG, 139),
@@ -1545,14 +1555,14 @@ typedef enum {
 
   /* callback function for setting socket options */
   CURLOPT(CURLOPT_SOCKOPTFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 148),
-  CURLOPT(CURLOPT_SOCKOPTDATA, CURLOPTTYPE_OBJECTPOINT, 149),
+  CURLOPT(CURLOPT_SOCKOPTDATA, CURLOPTTYPE_CBPOINT, 149),
 
   /* set to 0 to disable session ID re-use for this transfer, default is
      enabled (== 1) */
   CURLOPT(CURLOPT_SSL_SESSIONID_CACHE, CURLOPTTYPE_LONG, 150),
 
   /* allowed SSH authentication methods */
-  CURLOPT(CURLOPT_SSH_AUTH_TYPES, CURLOPTTYPE_LONG, 151),
+  CURLOPT(CURLOPT_SSH_AUTH_TYPES, CURLOPTTYPE_VALUES, 151),
 
   /* Used by scp/sftp to do public/private key authentication */
   CURLOPT(CURLOPT_SSH_PUBLIC_KEYFILE, CURLOPTTYPE_STRINGPOINT, 152),
@@ -1577,7 +1587,7 @@ typedef enum {
 
   /* Set the behaviour of POST when redirecting. Values must be set to one
      of CURL_REDIR* defines below. This used to be called CURLOPT_POST301 */
-  CURLOPT(CURLOPT_POSTREDIR, CURLOPTTYPE_LONG, 161),
+  CURLOPT(CURLOPT_POSTREDIR, CURLOPTTYPE_VALUES, 161),
 
   /* used by scp/sftp to verify the host's public key */
   CURLOPT(CURLOPT_SSH_HOST_PUBLIC_KEY_MD5, CURLOPTTYPE_STRINGPOINT, 162),
@@ -1587,7 +1597,7 @@ typedef enum {
      CURL_SOCKET_BAD.  The callback should have type
      curl_opensocket_callback */
   CURLOPT(CURLOPT_OPENSOCKETFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 163),
-  CURLOPT(CURLOPT_OPENSOCKETDATA, CURLOPTTYPE_OBJECTPOINT, 164),
+  CURLOPT(CURLOPT_OPENSOCKETDATA, CURLOPTTYPE_CBPOINT, 164),
 
   /* POST volatile input fields. */
   CURLOPT(CURLOPT_COPYPOSTFIELDS, CURLOPTTYPE_OBJECTPOINT, 165),
@@ -1597,7 +1607,7 @@ typedef enum {
 
   /* Callback function for seeking in the input stream */
   CURLOPT(CURLOPT_SEEKFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 167),
-  CURLOPT(CURLOPT_SEEKDATA, CURLOPTTYPE_OBJECTPOINT, 168),
+  CURLOPT(CURLOPT_SEEKDATA, CURLOPTTYPE_CBPOINT, 168),
 
   /* CRL file */
   CURLOPT(CURLOPT_CRLFILE, CURLOPTTYPE_STRINGPOINT, 169),
@@ -1658,7 +1668,7 @@ typedef enum {
   CURLOPT(CURLOPT_SSH_KEYFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 184),
 
   /* set the SSH host key callback custom pointer */
-  CURLOPT(CURLOPT_SSH_KEYDATA, CURLOPTTYPE_OBJECTPOINT, 185),
+  CURLOPT(CURLOPT_SSH_KEYDATA, CURLOPTTYPE_CBPOINT, 185),
 
   /* set the SMTP mail originator */
   CURLOPT(CURLOPT_MAIL_FROM, CURLOPTTYPE_STRINGPOINT, 186),
@@ -1670,7 +1680,7 @@ typedef enum {
   CURLOPT(CURLOPT_FTP_USE_PRET, CURLOPTTYPE_LONG, 188),
 
   /* RTSP request method (OPTIONS, SETUP, PLAY, etc...) */
-  CURLOPT(CURLOPT_RTSP_REQUEST, CURLOPTTYPE_LONG, 189),
+  CURLOPT(CURLOPT_RTSP_REQUEST, CURLOPTTYPE_VALUES, 189),
 
   /* The RTSP session identifier */
   CURLOPT(CURLOPT_RTSP_SESSION_ID, CURLOPTTYPE_STRINGPOINT, 190),
@@ -1688,7 +1698,7 @@ typedef enum {
   CURLOPT(CURLOPT_RTSP_SERVER_CSEQ, CURLOPTTYPE_LONG, 194),
 
   /* The stream to pass to INTERLEAVEFUNCTION. */
-  CURLOPT(CURLOPT_INTERLEAVEDATA, CURLOPTTYPE_OBJECTPOINT, 195),
+  CURLOPT(CURLOPT_INTERLEAVEDATA, CURLOPTTYPE_CBPOINT, 195),
 
   /* Let the application define a custom write method for RTP data */
   CURLOPT(CURLOPT_INTERLEAVEFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 196),
@@ -1708,10 +1718,10 @@ typedef enum {
   CURLOPT(CURLOPT_FNMATCH_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 200),
 
   /* Let the application define custom chunk data pointer */
-  CURLOPT(CURLOPT_CHUNK_DATA, CURLOPTTYPE_OBJECTPOINT, 201),
+  CURLOPT(CURLOPT_CHUNK_DATA, CURLOPTTYPE_CBPOINT, 201),
 
   /* FNMATCH_FUNCTION user pointer */
-  CURLOPT(CURLOPT_FNMATCH_DATA, CURLOPTTYPE_OBJECTPOINT, 202),
+  CURLOPT(CURLOPT_FNMATCH_DATA, CURLOPTTYPE_CBPOINT, 202),
 
   /* send linked-list of name:port:address sets */
   CURLOPT(CURLOPT_RESOLVE, CURLOPTTYPE_SLISTPOINT, 203),
@@ -1740,10 +1750,10 @@ typedef enum {
   /* Callback function for closing socket (instead of close(2)). The callback
      should have type curl_closesocket_callback */
   CURLOPT(CURLOPT_CLOSESOCKETFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 208),
-  CURLOPT(CURLOPT_CLOSESOCKETDATA, CURLOPTTYPE_OBJECTPOINT, 209),
+  CURLOPT(CURLOPT_CLOSESOCKETDATA, CURLOPTTYPE_CBPOINT, 209),
 
   /* allow GSSAPI credential delegation */
-  CURLOPT(CURLOPT_GSSAPI_DELEGATION, CURLOPTTYPE_LONG, 210),
+  CURLOPT(CURLOPT_GSSAPI_DELEGATION, CURLOPTTYPE_VALUES, 210),
 
   /* Set the name servers to use for DNS resolution */
   CURLOPT(CURLOPT_DNS_SERVERS, CURLOPTTYPE_STRINGPOINT, 211),
@@ -1760,7 +1770,7 @@ typedef enum {
   CURLOPT(CURLOPT_TCP_KEEPINTVL, CURLOPTTYPE_LONG, 215),
 
   /* Enable/disable specific SSL features with a bitmask, see CURLSSLOPT_* */
-  CURLOPT(CURLOPT_SSL_OPTIONS, CURLOPTTYPE_LONG, 216),
+  CURLOPT(CURLOPT_SSL_OPTIONS, CURLOPTTYPE_VALUES, 216),
 
   /* Set the SMTP auth originator */
   CURLOPT(CURLOPT_MAIL_AUTH, CURLOPTTYPE_STRINGPOINT, 217),
@@ -1807,7 +1817,7 @@ typedef enum {
   CURLOPT(CURLOPT_PROXYHEADER, CURLOPTTYPE_SLISTPOINT, 228),
 
   /* Pass in a bitmask of "header options" */
-  CURLOPT(CURLOPT_HEADEROPT, CURLOPTTYPE_LONG, 229),
+  CURLOPT(CURLOPT_HEADEROPT, CURLOPTTYPE_VALUES, 229),
 
   /* The public key in DER form used to validate the peer public key
      this option is used only if SSL_VERIFYPEER is true */
@@ -1879,7 +1889,7 @@ typedef enum {
 
   /* What version to specifically try to use for proxy.
      See CURL_SSLVERSION defines below. */
-  CURLOPT(CURLOPT_PROXY_SSLVERSION, CURLOPTTYPE_LONG, 250),
+  CURLOPT(CURLOPT_PROXY_SSLVERSION, CURLOPTTYPE_VALUES, 250),
 
   /* Set a username for authenticated TLS for proxy */
   CURLOPT(CURLOPT_PROXY_TLSAUTH_USERNAME, CURLOPTTYPE_STRINGPOINT, 251),
@@ -1953,7 +1963,7 @@ typedef enum {
   CURLOPT(CURLOPT_RESOLVER_START_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 272),
 
   /* User data to pass to the resolver start callback. */
-  CURLOPT(CURLOPT_RESOLVER_START_DATA, CURLOPTTYPE_OBJECTPOINT, 273),
+  CURLOPT(CURLOPT_RESOLVER_START_DATA, CURLOPTTYPE_CBPOINT, 273),
 
   /* send HAProxy PROXY protocol header? */
   CURLOPT(CURLOPT_HAPROXYPROTOCOL, CURLOPTTYPE_LONG, 274),
@@ -1984,7 +1994,7 @@ typedef enum {
   CURLOPT(CURLOPT_TRAILERFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 283),
 
   /* pointer to be passed to HTTP_TRAILER_FUNCTION */
-  CURLOPT(CURLOPT_TRAILERDATA, CURLOPTTYPE_OBJECTPOINT, 284),
+  CURLOPT(CURLOPT_TRAILERDATA, CURLOPTTYPE_CBPOINT, 284),
 
   /* set this to 1L to allow HTTP/0.9 responses or 0L to disallow */
   CURLOPT(CURLOPT_HTTP09_ALLOWED, CURLOPTTYPE_LONG, 285),
@@ -2948,6 +2958,7 @@ CURL_EXTERN CURLcode curl_easy_pause(CURL *handle, int bitmask);
 #include "easy.h" /* nothing in curl is fun without the easy stuff */
 #include "multi.h"
 #include "urlapi.h"
+#include "options.h"
 
 /* the typechecker doesn't work in C++ (yet) */
 #if defined(__GNUC__) && defined(__GNUC_MINOR__) && \
diff --git a/include/curl/options.h b/include/curl/options.h
new file mode 100644
index 000000000..f3bd8e191
--- /dev/null
+++ b/include/curl/options.h
@@ -0,0 +1,68 @@
+#ifndef CURLINC_OPTIONS_H
+#define CURLINC_OPTIONS_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 2018 - 2020, 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.haxx.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.
+ *
+ ***************************************************************************/
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+  CURLOT_LONG,    /* long (a range of values) */
+  CURLOT_VALUES,  /*      (a defined set or bitmask) */
+  CURLOT_OFF_T,   /* curl_off_t (a range of values) */
+  CURLOT_OBJECT,  /* pointer (void *) */
+  CURLOT_STRING,  /*         (char * to zero terminated buffer) */
+  CURLOT_SLIST,   /*         (struct curl_slist *) */
+  CURLOT_CBPTR,   /*         (void * passed as-is to a callback) */
+  CURLOT_BLOB,    /* blob (struct curl_blob *) */
+  CURLOT_FUNCTION /* function pointer */
+} curl_easytype;
+
+/* Flag bits */
+
+/* "alias" means it is provided for old programs to remain functional,
+   we prefer another name */
+#define CURLOT_FLAG_ALIAS (1<<0)
+
+/* The CURLOPTTYPE_* id ranges can still be used to figure out what type/size
+   to use for curl_easy_setopt() for the given id */
+struct curl_easyoption {
+  const char *name;
+  CURLoption id;
+  curl_easytype type;
+  unsigned int flags;
+};
+
+CURL_EXTERN const struct curl_easyoption *
+curl_easy_option_by_name(const char *name);
+
+CURL_EXTERN const struct curl_easyoption *
+curl_easy_option_by_id (CURLoption id);
+
+CURL_EXTERN const struct curl_easyoption *
+curl_easy_option_next(const struct curl_easyoption *prev);
+
+#ifdef __cplusplus
+} /* end of extern "C" */
+#endif
+#endif /* CURLINC_OPTIONS_H */
diff --git a/lib/Makefile.am b/lib/Makefile.am
index f2886ec63..0a263306a 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -153,3 +153,6 @@ TIDY:=clang-tidy
 
 tidy:
 	$(TIDY) $(CSOURCES) $(TIDYFLAGS) -- $(AM_CPPFLAGS) $(CPPFLAGS) -DHAVE_CONFIG_H
+
+optiontable:
+	perl optiontable.pl < $(top_srcdir)/include/curl/curl.h > easyoptions.c
diff --git a/lib/Makefile.inc b/lib/Makefile.inc
index ae3f961cf..8b209721b 100644
--- a/lib/Makefile.inc
+++ b/lib/Makefile.inc
@@ -61,7 +61,7 @@ LIB_CFILES = altsvc.c amigaos.c asyn-ares.c asyn-thread.c base64.c            \
   socks_gssapi.c socks_sspi.c speedcheck.c splay.c strcase.c strdup.c         \
   strerror.c strtok.c strtoofft.c system_win32.c telnet.c tftp.c timeval.c    \
   transfer.c urlapi.c version.c warnless.c wildcard.c x509asn1.c dynbuf.c     \
-  version_win32.c
+  version_win32.c easyoptions.c easygetopt.c
 
 LIB_HFILES = altsvc.h amigaos.h arpa_telnet.h asyn.h conncache.h connect.h    \
   content_encoding.h cookie.h curl_addrinfo.h curl_base64.h curl_ctype.h      \
@@ -80,7 +80,7 @@ LIB_HFILES = altsvc.h amigaos.h arpa_telnet.h asyn.h conncache.h connect.h    \
   smb.h smtp.h sockaddr.h socketpair.h socks.h speedcheck.h splay.h strcase.h \
   strdup.h strerror.h strtok.h strtoofft.h system_win32.h telnet.h tftp.h     \
   timeval.h transfer.h urlapi-int.h urldata.h warnless.h wildcard.h           \
-  x509asn1.h dynbuf.h version_win32.h
+  x509asn1.h dynbuf.h version_win32.h easyoptions.h
 
 LIB_RCFILES = libcurl.rc
 
diff --git a/lib/easygetopt.c b/lib/easygetopt.c
new file mode 100644
index 000000000..8cfd49977
--- /dev/null
+++ b/lib/easygetopt.c
@@ -0,0 +1,73 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ | |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             ___|___/|_| ______|
+ *
+ * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel.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.haxx.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.
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+#include "strcase.h"
+#include "easyoptions.h"
+
+/* Lookups easy options at runtime */
+static struct curl_easyoption *lookup(const char *name, CURLoption id)
+{
+  DEBUGASSERT(name || id);
+  DEBUGASSERT(!Curl_easyopts_check());
+  if(name || id) {
+    struct curl_easyoption *o = &Curl_easyopts[0];
+    do {
+      if(name) {
+        if(strcasecompare(o->name, name))
+          return o;
+      }
+      else {
+        if((o->id == id) && !(o->flags & CURLOT_FLAG_ALIAS))
+          /* don't match alias options */
+          return o;
+      }
+      o++;
+    } while(o->name);
+  }
+  return NULL;
+}
+
+const struct curl_easyoption *curl_easy_option_by_name(const char *name)
+{
+  return lookup(name, 0);
+}
+
+const struct curl_easyoption *curl_easy_option_by_id(CURLoption id)
+{
+  return lookup(NULL, id);
+}
+
+/* Iterates over available options */
+const struct curl_easyoption *
+curl_easy_option_next(const struct curl_easyoption *prev)
+{
+  if(prev && prev->name) {
+    prev++;
+    if(prev->name)
+      return prev;
+  }
+  else if(!prev)
+    return &Curl_easyopts[0];
+  return NULL;
+}
+
diff --git a/lib/easyoptions.c b/lib/easyoptions.c
new file mode 100644
index 000000000..586abfe52
--- /dev/null
+++ b/lib/easyoptions.c
@@ -0,0 +1,346 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ | |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             ___|___/|_| ______|
+ *
+ * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel.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.haxx.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.
+ *
+ ***************************************************************************/
+
+/* This source code is generated by optiontable.pl - DO NOT EDIT BY HAND */
+
+#include "curl_setup.h"
+#include "easyoptions.h"
+
+/* all easy setopt options listed in alphabetical order */
+struct curl_easyoption Curl_easyopts[] = {
+  {"ABSTRACT_UNIX_SOCKET", CURLOPT_ABSTRACT_UNIX_SOCKET, CURLOT_STRING, 0},
+  {"ACCEPTTIMEOUT_MS", CURLOPT_ACCEPTTIMEOUT_MS, CURLOT_LONG, 0},
+  {"ACCEPT_ENCODING", CURLOPT_ACCEPT_ENCODING, CURLOT_STRING, 0},
+  {"ADDRESS_SCOPE", CURLOPT_ADDRESS_SCOPE, CURLOT_LONG, 0},
+  {"ALTSVC", CURLOPT_ALTSVC, CURLOT_STRING, 0},
+  {"ALTSVC_CTRL", CURLOPT_ALTSVC_CTRL, CURLOT_LONG, 0},
+  {"APPEND", CURLOPT_APPEND, CURLOT_LONG, 0},
+  {"AUTOREFERER", CURLOPT_AUTOREFERER, CURLOT_LONG, 0},
+  {"BUFFERSIZE", CURLOPT_BUFFERSIZE, CURLOT_LONG, 0},
+  {"CAINFO", CURLOPT_CAINFO, CURLOT_STRING, 0},
+  {"CAPATH", CURLOPT_CAPATH, CURLOT_STRING, 0},
+  {"CERTINFO", CURLOPT_CERTINFO, CURLOT_LONG, 0},
+  {"CHUNK_BGN_FUNCTION", CURLOPT_CHUNK_BGN_FUNCTION, CURLOT_FUNCTION, 0},
+  {"CHUNK_DATA", CURLOPT_CHUNK_DATA, CURLOT_CBPTR, 0},
+  {"CHUNK_END_FUNCTION", CURLOPT_CHUNK_END_FUNCTION, CURLOT_FUNCTION, 0},
+  {"CLOSESOCKETDATA", CURLOPT_CLOSESOCKETDATA, CURLOT_CBPTR, 0},
+  {"CLOSESOCKETFUNCTION", CURLOPT_CLOSESOCKETFUNCTION, CURLOT_FUNCTION, 0},
+  {"CONNECTTIMEOUT", CURLOPT_CONNECTTIMEOUT, CURLOT_LONG, 0},
+  {"CONNECTTIMEOUT_MS", CURLOPT_CONNECTTIMEOUT_MS, CURLOT_LONG, 0},
+  {"CONNECT_ONLY", CURLOPT_CONNECT_ONLY, CURLOT_LONG, 0},
+  {"CONNECT_TO", CURLOPT_CONNECT_TO, CURLOT_SLIST, 0},
+  {"CONV_FROM_NETWORK_FUNCTION", CURLOPT_CONV_FROM_NETWORK_FUNCTION,
+   CURLOT_FUNCTION, 0},
+  {"CONV_FROM_UTF8_FUNCTION", CURLOPT_CONV_FROM_UTF8_FUNCTION,
+   CURLOT_FUNCTION, 0},
+  {"CONV_TO_NETWORK_FUNCTION", CURLOPT_CONV_TO_NETWORK_FUNCTION,
+   CURLOT_FUNCTION, 0},
+  {"COOKIE", CURLOPT_COOKIE, CURLOT_STRING, 0},
+  {"COOKIEFILE", CURLOPT_COOKIEFILE, CURLOT_STRING, 0},
+  {"COOKIEJAR", CURLOPT_COOKIEJAR, CURLOT_STRING, 0},
+  {"COOKIELIST", CURLOPT_COOKIELIST, CURLOT_STRING, 0},
+  {"COOKIESESSION", CURLOPT_COOKIESESSION, CURLOT_LONG, 0},
+  {"COPYPOSTFIELDS", CURLOPT_COPYPOSTFIELDS, CURLOT_OBJECT, 0},
+  {"CRLF", CURLOPT_CRLF, CURLOT_LONG, 0},
+  {"CRLFILE", CURLOPT_CRLFILE, CURLOT_STRING, 0},
+  {"CURLU", CURLOPT_CURLU, CURLOT_OBJECT, 0},
+  {"CUSTOMREQUEST", CURLOPT_CUSTOMREQUEST, CURLOT_STRING, 0},
+  {"DEBUGDATA", CURLOPT_DEBUGDATA, CURLOT_CBPTR, 0},
+  {"DEBUGFUNCTION", CURLOPT_DEBUGFUNCTION, CURLOT_FUNCTION, 0},
+  {"DEFAULT_PROTOCOL", CURLOPT_DEFAULT_PROTOCOL, CURLOT_STRING, 0},
+  {"DIRLISTONLY", CURLOPT_DIRLISTONLY, CURLOT_LONG, 0},
+  {"DISALLOW_USERNAME_IN_URL", CURLOPT_DISALLOW_USERNAME_IN_URL,
+   CURLOT_LONG, 0},
+  {"DNS_CACHE_TIMEOUT", CURLOPT_DNS_CACHE_TIMEOUT, CURLOT_LONG, 0},
+  {"DNS_INTERFACE", CURLOPT_DNS_INTERFACE, CURLOT_STRING, 0},
+  {"DNS_LOCAL_IP4", CURLOPT_DNS_LOCAL_IP4, CURLOT_STRING, 0},
+  {"DNS_LOCAL_IP6", CURLOPT_DNS_LOCAL_IP6, CURLOT_STRING, 0},
+  {"DNS_SERVERS", CURLOPT_DNS_SERVERS, CURLOT_STRING, 0},
+  {"DNS_SHUFFLE_ADDRESSES", CURLOPT_DNS_SHUFFLE_ADDRESSES, CURLOT_LONG, 0},
+  {"DNS_USE_GLOBAL_CACHE", CURLOPT_DNS_USE_GLOBAL_CACHE, CURLOT_LONG, 0},
+  {"DOH_URL", CURLOPT_DOH_URL, CURLOT_STRING, 0},
+  {"EGDSOCKET", CURLOPT_EGDSOCKET, CURLOT_STRING, 0},
+  {"ENCODING", CURLOPT_ACCEPT_ENCODING, CURLOT_STRING, CURLOT_FLAG_ALIAS},
+  {"ERRORBUFFER", CURLOPT_ERRORBUFFER, CURLOT_OBJECT, 0},
+  {"EXPECT_100_TIMEOUT_MS", CURLOPT_EXPECT_100_TIMEOUT_MS, CURLOT_LONG, 0},
+  {"FAILONERROR", CURLOPT_FAILONERROR, CURLOT_LONG, 0},
+  {"FILE", CURLOPT_WRITEDATA, CURLOT_CBPTR, CURLOT_FLAG_ALIAS},
+  {"FILETIME", CURLOPT_FILETIME, CURLOT_LONG, 0},
+  {"FNMATCH_DATA", CURLOPT_FNMATCH_DATA, CURLOT_CBPTR, 0},
+  {"FNMATCH_FUNCTION", CURLOPT_FNMATCH_FUNCTION, CURLOT_FUNCTION, 0},
+  {"FOLLOWLOCATION", CURLOPT_FOLLOWLOCATION, CURLOT_LONG, 0},
+  {"FORBID_REUSE", CURLOPT_FORBID_REUSE, CURLOT_LONG, 0},
+  {"FRESH_CONNECT", CURLOPT_FRESH_CONNECT, CURLOT_LONG, 0},
+  {"FTPAPPEND", CURLOPT_APPEND, CURLOT_LONG, CURLOT_FLAG_ALIAS},
+  {"FTPLISTONLY", CURLOPT_DIRLISTONLY, CURLOT_LONG, CURLOT_FLAG_ALIAS},
+  {"FTPPORT", CURLOPT_FTPPORT, CURLOT_STRING, 0},
+  {"FTPSSLAUTH", CURLOPT_FTPSSLAUTH, CURLOT_VALUES, 0},
+  {"FTP_ACCOUNT", CURLOPT_FTP_ACCOUNT, CURLOT_STRING, 0},
+  {"FTP_ALTERNATIVE_TO_USER", CURLOPT_FTP_ALTERNATIVE_TO_USER,
+   CURLOT_STRING, 0},
+  {"FTP_CREATE_MISSING_DIRS", CURLOPT_FTP_CREATE_MISSING_DIRS,
+   CURLOT_LONG, 0},
+  {"FTP_FILEMETHOD", CURLOPT_FTP_FILEMETHOD, CURLOT_VALUES, 0},
+  {"FTP_RESPONSE_TIMEOUT", CURLOPT_FTP_RESPONSE_TIMEOUT, CURLOT_LONG, 0},
+  {"FTP_SKIP_PASV_IP", CURLOPT_FTP_SKIP_PASV_IP, CURLOT_LONG, 0},
+  {"FTP_SSL", CURLOPT_USE_SSL, CURLOT_VALUES, CURLOT_FLAG_ALIAS},
+  {"FTP_SSL_CCC", CURLOPT_FTP_SSL_CCC, CURLOT_LONG, 0},
+  {"FTP_USE_EPRT", CURLOPT_FTP_USE_EPRT, CURLOT_LONG, 0},
+  {"FTP_USE_EPSV", CURLOPT_FTP_USE_EPSV, CURLOT_LONG, 0},
+  {"FTP_USE_PRET", CURLOPT_FTP_USE_PRET, CURLOT_LONG, 0},
+  {"GSSAPI_DELEGATION", CURLOPT_GSSAPI_DELEGATION, CURLOT_VALUES, 0},
+  {"HAPPY_EYEBALLS_TIMEOUT_MS", CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS,
+   CURLOT_LONG, 0},
+  {"HAPROXYPROTOCOL", CURLOPT_HAPROXYPROTOCOL, CURLOT_LONG, 0},
+  {"HEADER", CURLOPT_HEADER, CURLOT_LONG, 0},
+  {"HEADERDATA", CURLOPT_HEADERDATA, CURLOT_CBPTR, 0},
+  {"HEADERFUNCTION", CURLOPT_HEADERFUNCTION, CURLOT_FUNCTION, 0},
+  {"HEADEROPT", CURLOPT_HEADEROPT, CURLOT_VALUES, 0},
+  {"HTTP09_ALLOWED", CURLOPT_HTTP09_ALLOWED, CURLOT_LONG, 0},
+  {"HTTP200ALIASES", CURLOPT_HTTP200ALIASES, CURLOT_SLIST, 0},
+  {"HTTPAUTH", CURLOPT_HTTPAUTH, CURLOT_VALUES, 0},
+  {"HTTPGET", CURLOPT_HTTPGET, CURLOT_LONG, 0},
+  {"HTTPHEADER", CURLOPT_HTTPHEADER, CURLOT_SLIST, 0},
+  {"HTTPPOST", CURLOPT_HTTPPOST, CURLOT_OBJECT, 0},
+  {"HTTPPROXYTUNNEL", CURLOPT_HTTPPROXYTUNNEL, CURLOT_LONG, 0},
+  {"HTTP_CONTENT_DECODING", CURLOPT_HTTP_CONTENT_DECODING, CURLOT_LONG, 0},
+  {"HTTP_TRANSFER_DECODING", CURLOPT_HTTP_TRANSFER_DECODING, CURLOT_LONG, 0},
+  {"HTTP_VERSION", CURLOPT_HTTP_VERSION, CURLOT_VALUES, 0},
+  {"IGNORE_CONTENT_LENGTH", CURLOPT_IGNORE_CONTENT_LENGTH, CURLOT_LONG, 0},
+  {"INFILE", CURLOPT_READDATA, CURLOT_CBPTR, CURLOT_FLAG_ALIAS},
+  {"INFILESIZE", CURLOPT_INFILESIZE, CURLOT_LONG, 0},
+  {"INFILESIZE_LARGE", CURLOPT_INFILESIZE_LARGE, CURLOT_OFF_T, 0},
+  {"INTERFACE", CURLOPT_INTERFACE, CURLOT_STRING, 0},
+  {"INTERLEAVEDATA", CURLOPT_INTERLEAVEDATA, CURLOT_CBPTR, 0},
+  {"INTERLEAVEFUNCTION", CURLOPT_INTERLEAVEFUNCTION, CURLOT_FUNCTION, 0},
+  {"IOCTLDATA", CURLOPT_IOCTLDATA, CURLOT_CBPTR, 0},
+  {"IOCTLFUNCTION", CURLOPT_IOCTLFUNCTION, CURLOT_FUNCTION, 0},
+  {"IPRESOLVE", CURLOPT_IPRESOLVE, CURLOT_VALUES, 0},
+  {"ISSUERCERT", CURLOPT_ISSUERCERT, CURLOT_STRING, 0},
+  {"ISSUERCERT_BLOB", CURLOPT_ISSUERCERT_BLOB, CURLOT_BLOB, 0},
+  {"KEEP_SENDING_ON_ERROR", CURLOPT_KEEP_SENDING_ON_ERROR, CURLOT_LONG, 0},
+  {"KEYPASSWD", CURLOPT_KEYPASSWD, CURLOT_STRING, 0},
+  {"KRB4LEVEL", CURLOPT_KRBLEVEL, CURLOT_STRING, CURLOT_FLAG_ALIAS},
+  {"KRBLEVEL", CURLOPT_KRBLEVEL, CURLOT_STRING, 0},
+  {"LOCALPORT", CURLOPT_LOCALPORT, CURLOT_LONG, 0},
+  {"LOCALPORTRANGE", CURLOPT_LOCALPORTRANGE, CURLOT_LONG, 0},
+  {"LOGIN_OPTIONS", CURLOPT_LOGIN_OPTIONS, CURLOT_STRING, 0},
+  {"LOW_SPEED_LIMIT", CURLOPT_LOW_SPEED_LIMIT, CURLOT_LONG, 0},
+  {"LOW_SPEED_TIME", CURLOPT_LOW_SPEED_TIME, CURLOT_LONG, 0},
+  {"MAIL_AUTH", CURLOPT_MAIL_AUTH, CURLOT_STRING, 0},
+  {"MAIL_FROM", CURLOPT_MAIL_FROM, CURLOT_STRING, 0},
+  {"MAIL_RCPT", CURLOPT_MAIL_RCPT, CURLOT_SLIST, 0},
+  {"MAIL_RCPT_ALLLOWFAILS", CURLOPT_MAIL_RCPT_ALLLOWFAILS, CURLOT_LONG, 0},
+  {"MAXAGE_CONN", CURLOPT_MAXAGE_CONN, CURLOT_LONG, 0},
+  {"MAXCONNECTS", CURLOPT_MAXCONNECTS, CURLOT_LONG, 0},
+  {"MAXFILESIZE", CURLOPT_MAXFILESIZE, CURLOT_LONG, 0},
+  {"MAXFILESIZE_LARGE", CURLOPT_MAXFILESIZE_LARGE, CURLOT_OFF_T, 0},
+  {"MAXREDIRS", CURLOPT_MAXREDIRS, CURLOT_LONG, 0},
+  {"MAX_RECV_SPEED_LARGE", CURLOPT_MAX_RECV_SPEED_LARGE, CURLOT_OFF_T, 0},
+  {"MAX_SEND_SPEED_LARGE", CURLOPT_MAX_SEND_SPEED_LARGE, CURLOT_OFF_T, 0},
+  {"MIMEPOST", CURLOPT_MIMEPOST, CURLOT_OBJECT, 0},
+  {"NETRC", CURLOPT_NETRC, CURLOT_VALUES, 0},
+  {"NETRC_FILE", CURLOPT_NETRC_FILE, CURLOT_STRING, 0},
+  {"NEW_DIRECTORY_PERMS", CURLOPT_NEW_DIRECTORY_PERMS, CURLOT_LONG, 0},
+  {"NEW_FILE_PERMS", CURLOPT_NEW_FILE_PERMS, CURLOT_LONG, 0},
+  {"NOBODY", CURLOPT_NOBODY, CURLOT_LONG, 0},
+  {"NOPROGRESS", CURLOPT_NOPROGRESS, CURLOT_LONG, 0},
+  {"NOPROXY", CURLOPT_NOPROXY, CURLOT_STRING, 0},
+  {"NOSIGNAL", CURLOPT_NOSIGNAL, CURLOT_LONG, 0},
+  {"OPENSOCKETDATA", CURLOPT_OPENSOCKETDATA, CURLOT_CBPTR, 0},
+  {"OPENSOCKETFUNCTION", CURLOPT_OPENSOCKETFUNCTION, CURLOT_FUNCTION, 0},
+  {"PASSWORD", CURLOPT_PASSWORD, CURLOT_STRING, 0},
+  {"PATH_AS_IS", CURLOPT_PATH_AS_IS, CURLOT_LONG, 0},
+  {"PINNEDPUBLICKEY", CURLOPT_PINNEDPUBLICKEY, CURLOT_STRING, 0},
+  {"PIPEWAIT", CURLOPT_PIPEWAIT, CURLOT_LONG, 0},
+  {"PORT", CURLOPT_PORT, CURLOT_LONG, 0},
+  {"POST", CURLOPT_POST, CURLOT_LONG, 0},
+  {"POST301", CURLOPT_POSTREDIR, CURLOT_VALUES, CURLOT_FLAG_ALIAS},
+  {"POSTFIELDS", CURLOPT_POSTFIELDS, CURLOT_OBJECT, 0},
+  {"POSTFIELDSIZE", CURLOPT_POSTFIELDSIZE, CURLOT_LONG, 0},
+  {"POSTFIELDSIZE_LARGE", CURLOPT_POSTFIELDSIZE_LARGE, CURLOT_OFF_T, 0},
+  {"POSTQUOTE", CURLOPT_POSTQUOTE, CURLOT_SLIST, 0},
+  {"POSTREDIR", CURLOPT_POSTREDIR, CURLOT_VALUES, 0},
+  {"PREQUOTE", CURLOPT_PREQUOTE, CURLOT_SLIST, 0},
+  {"PRE_PROXY", CURLOPT_PRE_PROXY, CURLOT_STRING, 0},
+  {"PRIVATE", CURLOPT_PRIVATE, CURLOT_OBJECT, 0},
+  {"PROGRESSDATA", CURLOPT_XFERINFODATA, CURLOT_CBPTR, CURLOT_FLAG_ALIAS},
+  {"PROGRESSFUNCTION", CURLOPT_PROGRESSFUNCTION, CURLOT_FUNCTION, 0},
+  {"PROTOCOLS", CURLOPT_PROTOCOLS, CURLOT_LONG, 0},
+  {"PROXY", CURLOPT_PROXY, CURLOT_STRING, 0},
+  {"PROXYAUTH", CURLOPT_PROXYAUTH, CURLOT_VALUES, 0},
+  {"PROXYHEADER", CURLOPT_PROXYHEADER, CURLOT_SLIST, 0},
+  {"PROXYPASSWORD", CURLOPT_PROXYPASSWORD, CURLOT_STRING, 0},
+  {"PROXYPORT", CURLOPT_PROXYPORT, CURLOT_LONG, 0},
+  {"PROXYTYPE", CURLOPT_PROXYTYPE, CURLOT_VALUES, 0},
+  {"PROXYUSERNAME", CURLOPT_PROXYUSERNAME, CURLOT_STRING, 0},
+  {"PROXYUSERPWD", CURLOPT_PROXYUSERPWD, CURLOT_STRING, 0},
+  {"PROXY_CAINFO", CURLOPT_PROXY_CAINFO, CURLOT_STRING, 0},
+  {"PROXY_CAPATH", CURLOPT_PROXY_CAPATH, CURLOT_STRING, 0},
+  {"PROXY_CRLFILE", CURLOPT_PROXY_CRLFILE, CURLOT_STRING, 0},
+  {"PROXY_ISSUERCERT", CURLOPT_PROXY_ISSUERCERT, CURLOT_STRING, 0},
+  {"PROXY_ISSUERCERT_BLOB", CURLOPT_PROXY_ISSUERCERT_BLOB, CURLOT_BLOB, 0},
+  {"PROXY_KEYPASSWD", CURLOPT_PROXY_KEYPASSWD, CURLOT_STRING, 0},
+  {"PROXY_PINNEDPUBLICKEY", CURLOPT_PROXY_PINNEDPUBLICKEY, CURLOT_STRING, 0},
+  {"PROXY_SERVICE_NAME", CURLOPT_PROXY_SERVICE_NAME, CURLOT_STRING, 0},
+  {"PROXY_SSLCERT", CURLOPT_PROXY_SSLCERT, CURLOT_STRING, 0},
+  {"PROXY_SSLCERTTYPE", CURLOPT_PROXY_SSLCERTTYPE, CURLOT_STRING, 0},
+  {"PROXY_SSLCERT_BLOB", CURLOPT_PROXY_SSLCERT_BLOB, CURLOT_BLOB, 0},
+  {"PROXY_SSLKEY", CURLOPT_PROXY_SSLKEY, CURLOT_STRING, 0},
+  {"PROXY_SSLKEYTYPE", CURLOPT_PROXY_SSLKEYTYPE, CURLOT_STRING, 0},
+  {"PROXY_SSLKEY_BLOB", CURLOPT_PROXY_SSLKEY_BLOB, CURLOT_BLOB, 0},
+  {"PROXY_SSLVERSION", CURLOPT_PROXY_SSLVERSION, CURLOT_VALUES, 0},
+  {"PROXY_SSL_CIPHER_LIST", CURLOPT_PROXY_SSL_CIPHER_LIST, CURLOT_STRING, 0},
+  {"PROXY_SSL_OPTIONS", CURLOPT_PROXY_SSL_OPTIONS, CURLOT_LONG, 0},
+  {"PROXY_SSL_VERIFYHOST", CURLOPT_PROXY_SSL_VERIFYHOST, CURLOT_LONG, 0},
+  {"PROXY_SSL_VERIFYPEER", CURLOPT_PROXY_SSL_VERIFYPEER, CURLOT_LONG, 0},
+  {"PROXY_TLS13_CIPHERS", CURLOPT_PROXY_TLS13_CIPHERS, CURLOT_STRING, 0},
+  {"PROXY_TLSAUTH_PASSWORD", CURLOPT_PROXY_TLSAUTH_PASSWORD,
+   CURLOT_STRING, 0},
+  {"PROXY_TLSAUTH_TYPE", CURLOPT_PROXY_TLSAUTH_TYPE, CURLOT_STRING, 0},
+  {"PROXY_TLSAUTH_USERNAME", CURLOPT_PROXY_TLSAUTH_USERNAME,
+   CURLOT_STRING, 0},
+  {"PROXY_TRANSFER_MODE", CURLOPT_PROXY_TRANSFER_MODE, CURLOT_LONG, 0},
+  {"PUT", CURLOPT_PUT, CURLOT_LONG, 0},
+  {"QUOTE", CURLOPT_QUOTE, CURLOT_SLIST, 0},
+  {"RANDOM_FILE", CURLOPT_RANDOM_FILE, CURLOT_STRING, 0},
+  {"RANGE", CURLOPT_RANGE, CURLOT_STRING, 0},
+  {"READDATA", CURLOPT_READDATA, CURLOT_CBPTR, 0},
+  {"READFUNCTION", CURLOPT_READFUNCTION, CURLOT_FUNCTION, 0},
+  {"REDIR_PROTOCOLS", CURLOPT_REDIR_PROTOCOLS, CURLOT_LONG, 0},
+  {"REFERER", CURLOPT_REFERER, CURLOT_STRING, 0},
+  {"REQUEST_TARGET", CURLOPT_REQUEST_TARGET, CURLOT_STRING, 0},
+  {"RESOLVE", CURLOPT_RESOLVE, CURLOT_SLIST, 0},
+  {"RESOLVER_START_DATA", CURLOPT_RESOLVER_START_DATA, CURLOT_CBPTR, 0},
+  {"RESOLVER_START_FUNCTION", CURLOPT_RESOLVER_START_FUNCTION,
+   CURLOT_FUNCTION, 0},
+  {"RESUME_FROM", CURLOPT_RESUME_FROM, CURLOT_LONG, 0},
+  {"RESUME_FROM_LARGE", CURLOPT_RESUME_FROM_LARGE, CURLOT_OFF_T, 0},
+  {"RTSPHEADER", CURLOPT_HTTPHEADER, CURLOT_SLIST, CURLOT_FLAG_ALIAS},
+  {"RTSP_CLIENT_CSEQ", CURLOPT_RTSP_CLIENT_CSEQ, CURLOT_LONG, 0},
+  {"RTSP_REQUEST", CURLOPT_RTSP_REQUEST, CURLOT_VALUES, 0},
+  {"RTSP_SERVER_CSEQ", CURLOPT_RTSP_SERVER_CSEQ, CURLOT_LONG, 0},
+  {"RTSP_SESSION_ID", CURLOPT_RTSP_SESSION_ID, CURLOT_STRING, 0},
+  {"RTSP_STREAM_URI", CURLOPT_RTSP_STREAM_URI, CURLOT_STRING, 0},
+  {"RTSP_TRANSPORT", CURLOPT_RTSP_TRANSPORT, CURLOT_STRING, 0},
+  {"SASL_AUTHZID", CURLOPT_SASL_AUTHZID, CURLOT_STRING, 0},
+  {"SASL_IR", CURLOPT_SASL_IR, CURLOT_LONG, 0},
+  {"SEEKDATA", CURLOPT_SEEKDATA, CURLOT_CBPTR, 0},
+  {"SEEKFUNCTION", CURLOPT_SEEKFUNCTION, CURLOT_FUNCTION, 0},
+  {"SERVER_RESPONSE_TIMEOUT", CURLOPT_FTP_RESPONSE_TIMEOUT,
+   CURLOT_LONG, CURLOT_FLAG_ALIAS},
+  {"SERVICE_NAME", CURLOPT_SERVICE_NAME, CURLOT_STRING, 0},
+  {"SHARE", CURLOPT_SHARE, CURLOT_OBJECT, 0},
+  {"SOCKOPTDATA", CURLOPT_SOCKOPTDATA, CURLOT_CBPTR, 0},
+  {"SOCKOPTFUNCTION", CURLOPT_SOCKOPTFUNCTION, CURLOT_FUNCTION, 0},
+  {"SOCKS5_AUTH", CURLOPT_SOCKS5_AUTH, CURLOT_LONG, 0},
+  {"SOCKS5_GSSAPI_NEC", CURLOPT_SOCKS5_GSSAPI_NEC, CURLOT_LONG, 0},
+  {"SOCKS5_GSSAPI_SERVICE", CURLOPT_SOCKS5_GSSAPI_SERVICE, CURLOT_STRING, 0},
+  {"SSH_AUTH_TYPES", CURLOPT_SSH_AUTH_TYPES, CURLOT_VALUES, 0},
+  {"SSH_COMPRESSION", CURLOPT_SSH_COMPRESSION, CURLOT_LONG, 0},
+  {"SSH_HOST_PUBLIC_KEY_MD5", CURLOPT_SSH_HOST_PUBLIC_KEY_MD5,
+   CURLOT_STRING, 0},
+  {"SSH_KEYDATA", CURLOPT_SSH_KEYDATA, CURLOT_CBPTR, 0},
+  {"SSH_KEYFUNCTION", CURLOPT_SSH_KEYFUNCTION, CURLOT_FUNCTION, 0},
+  {"SSH_KNOWNHOSTS", CURLOPT_SSH_KNOWNHOSTS, CURLOT_STRING, 0},
+  {"SSH_PRIVATE_KEYFILE", CURLOPT_SSH_PRIVATE_KEYFILE, CURLOT_STRING, 0},
+  {"SSH_PUBLIC_KEYFILE", CURLOPT_SSH_PUBLIC_KEYFILE, CURLOT_STRING, 0},
+  {"SSLCERT", CURLOPT_SSLCERT, CURLOT_STRING, 0},
+  {"SSLCERTPASSWD", CURLOPT_KEYPASSWD, CURLOT_STRING, CURLOT_FLAG_ALIAS},
+  {"SSLCERTTYPE", CURLOPT_SSLCERTTYPE, CURLOT_STRING, 0},
+  {"SSLCERT_BLOB", CURLOPT_SSLCERT_BLOB, CURLOT_BLOB, 0},
+  {"SSLENGINE", CURLOPT_SSLENGINE, CURLOT_STRING, 0},
+  {"SSLENGINE_DEFAULT", CURLOPT_SSLENGINE_DEFAULT, CURLOT_LONG, 0},
+  {"SSLKEY", CURLOPT_SSLKEY, CURLOT_STRING, 0},
+  {"SSLKEYPASSWD", CURLOPT_KEYPASSWD, CURLOT_STRING, CURLOT_FLAG_ALIAS},
+  {"SSLKEYTYPE", CURLOPT_SSLKEYTYPE, CURLOT_STRING, 0},
+  {"SSLKEY_BLOB", CURLOPT_SSLKEY_BLOB, CURLOT_BLOB, 0},
+  {"SSLVERSION", CURLOPT_SSLVERSION, CURLOT_VALUES, 0},
+  {"SSL_CIPHER_LIST", CURLOPT_SSL_CIPHER_LIST, CURLOT_STRING, 0},
+  {"SSL_CTX_DATA", CURLOPT_SSL_CTX_DATA, CURLOT_CBPTR, 0},
+  {"SSL_CTX_FUNCTION", CURLOPT_SSL_CTX_FUNCTION, CURLOT_FUNCTION, 0},
+  {"SSL_ENABLE_ALPN", CURLOPT_SSL_ENABLE_ALPN, CURLOT_LONG, 0},
+  {"SSL_ENABLE_NPN", CURLOPT_SSL_ENABLE_NPN, CURLOT_LONG, 0},
+  {"SSL_FALSESTART", CURLOPT_SSL_FALSESTART, CURLOT_LONG, 0},
+  {"SSL_OPTIONS", CURLOPT_SSL_OPTIONS, CURLOT_VALUES, 0},
+  {"SSL_SESSIONID_CACHE", CURLOPT_SSL_SESSIONID_CACHE, CURLOT_LONG, 0},
+  {"SSL_VERIFYHOST", CURLOPT_SSL_VERIFYHOST, CURLOT_LONG, 0},
+  {"SSL_VERIFYPEER", CURLOPT_SSL_VERIFYPEER, CURLOT_LONG, 0},
+  {"SSL_VERIFYSTATUS", CURLOPT_SSL_VERIFYSTATUS, CURLOT_LONG, 0},
+  {"STDERR", CURLOPT_STDERR, CURLOT_OBJECT, 0},
+  {"STREAM_DEPENDS", CURLOPT_STREAM_DEPENDS, CURLOT_OBJECT, 0},
+  {"STREAM_DEPENDS_E", CURLOPT_STREAM_DEPENDS_E, CURLOT_OBJECT, 0},
+  {"STREAM_WEIGHT", CURLOPT_STREAM_WEIGHT, CURLOT_LONG, 0},
+  {"SUPPRESS_CONNECT_HEADERS", CURLOPT_SUPPRESS_CONNECT_HEADERS,
+   CURLOT_LONG, 0},
+  {"TCP_FASTOPEN", CURLOPT_TCP_FASTOPEN, CURLOT_LONG, 0},
+  {"TCP_KEEPALIVE", CURLOPT_TCP_KEEPALIVE, CURLOT_LONG, 0},
+  {"TCP_KEEPIDLE", CURLOPT_TCP_KEEPIDLE, CURLOT_LONG, 0},
+  {"TCP_KEEPINTVL", CURLOPT_TCP_KEEPINTVL, CURLOT_LONG, 0},
+  {"TCP_NODELAY", CURLOPT_TCP_NODELAY, CURLOT_LONG, 0},
+  {"TELNETOPTIONS", CURLOPT_TELNETOPTIONS, CURLOT_SLIST, 0},
+  {"TFTP_BLKSIZE", CURLOPT_TFTP_BLKSIZE, CURLOT_LONG, 0},
+  {"TFTP_NO_OPTIONS", CURLOPT_TFTP_NO_OPTIONS, CURLOT_LONG, 0},
+  {"TIMECONDITION", CURLOPT_TIMECONDITION, CURLOT_VALUES, 0},
+  {"TIMEOUT", CURLOPT_TIMEOUT, CURLOT_LONG, 0},
+  {"TIMEOUT_MS", CURLOPT_TIMEOUT_MS, CURLOT_LONG, 0},
+  {"TIMEVALUE", CURLOPT_TIMEVALUE, CURLOT_LONG, 0},
+  {"TIMEVALUE_LARGE", CURLOPT_TIMEVALUE_LARGE, CURLOT_OFF_T, 0},
+  {"TLS13_CIPHERS", CURLOPT_TLS13_CIPHERS, CURLOT_STRING, 0},
+  {"TLSAUTH_PASSWORD", CURLOPT_TLSAUTH_PASSWORD, CURLOT_STRING, 0},
+  {"TLSAUTH_TYPE", CURLOPT_TLSAUTH_TYPE, CURLOT_STRING, 0},
+  {"TLSAUTH_USERNAME", CURLOPT_TLSAUTH_USERNAME, CURLOT_STRING, 0},
+  {"TRAILERDATA", CURLOPT_TRAILERDATA, CURLOT_CBPTR, 0},
+  {"TRAILERFUNCTION", CURLOPT_TRAILERFUNCTION, CURLOT_FUNCTION, 0},
+  {"TRANSFERTEXT", CURLOPT_TRANSFERTEXT, CURLOT_LONG, 0},
+  {"TRANSFER_ENCODING", CURLOPT_TRANSFER_ENCODING, CURLOT_LONG, 0},
+  {"UNIX_SOCKET_PATH", CURLOPT_UNIX_SOCKET_PATH, CURLOT_STRING, 0},
+  {"UNRESTRICTED_AUTH", CURLOPT_UNRESTRICTED_AUTH, CURLOT_LONG, 0},
+  {"UPKEEP_INTERVAL_MS", CURLOPT_UPKEEP_INTERVAL_MS, CURLOT_LONG, 0},
+  {"UPLOAD", CURLOPT_UPLOAD, CURLOT_LONG, 0},
+  {"UPLOAD_BUFFERSIZE", CURLOPT_UPLOAD_BUFFERSIZE, CURLOT_LONG, 0},
+  {"URL", CURLOPT_URL, CURLOT_STRING, 0},
+  {"USERAGENT", CURLOPT_USERAGENT, CURLOT_STRING, 0},
+  {"USERNAME", CURLOPT_USERNAME, CURLOT_STRING, 0},
+  {"USERPWD", CURLOPT_USERPWD, CURLOT_STRING, 0},
+  {"USE_SSL", CURLOPT_USE_SSL, CURLOT_VALUES, 0},
+  {"VERBOSE", CURLOPT_VERBOSE, CURLOT_LONG, 0},
+  {"WILDCARDMATCH", CURLOPT_WILDCARDMATCH, CURLOT_LONG, 0},
+  {"WRITEDATA", CURLOPT_WRITEDATA, CURLOT_CBPTR, 0},
+  {"WRITEFUNCTION", CURLOPT_WRITEFUNCTION, CURLOT_FUNCTION, 0},
+  {"WRITEHEADER", CURLOPT_HEADERDATA, CURLOT_CBPTR, CURLOT_FLAG_ALIAS},
+  {"XFERINFODATA", CURLOPT_XFERINFODATA, CURLOT_CBPTR, 0},
+  {"XFERINFOFUNCTION", CURLOPT_XFERINFOFUNCTION, CURLOT_FUNCTION, 0},
+  {"XOAUTH2_BEARER", CURLOPT_XOAUTH2_BEARER, CURLOT_STRING, 0},
+  {NULL, 0, 0, 0} /* end of table */
+};
+
+#ifdef CURLDEBUG
+/*
+ * Curl_easyopts_check() is a debug-only function that returns non-zero
+ * if this source file is not in sync with the options listed in curl/curl.h
+ */
+int Curl_easyopts_check(void)
+{
+  return (CURLOPT_LASTENTRY != (297 + 1));
+}
+#endif
diff --git a/lib/easyoptions.h b/lib/easyoptions.h
new file mode 100644
index 000000000..4b681a47e
--- /dev/null
+++ b/lib/easyoptions.h
@@ -0,0 +1,35 @@
+#ifndef HEADER_CURL_EASYOPTIONS_H
+#define HEADER_CURL_EASYOPTIONS_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2020, 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.haxx.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.
+ *
+ ***************************************************************************/
+
+/* should probably go into the public header */
+
+#include <curl/curl.h>
+
+/* generated table with all easy options */
+extern struct curl_easyoption Curl_easyopts[];
+
+#ifdef CURLDEBUG
+int Curl_easyopts_check(void);
+#endif
+#endif
diff --git a/lib/optiontable.pl b/lib/optiontable.pl
new file mode 100644
index 000000000..1348eedae
--- /dev/null
+++ b/lib/optiontable.pl
@@ -0,0 +1,118 @@
+#!/usr/bin/perl
+
+print <<HEAD
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2020, 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.haxx.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.
+ *
+ ***************************************************************************/
+
+/* This source code is generated by optiontable.pl - DO NOT EDIT BY HAND */
+
+#include "curl_setup.h"
+#include "easyoptions.h"
+
+/* all easy setopt options listed in alphabetical order */
+struct curl_easyoption Curl_easyopts[] = {
+HEAD
+    ;
+
+my $lastnum=0;
+
+while(<STDIN>) {
+    if(/^ *CURLOPT\(([^,]*), ([^,]*), (\d+)\)/) {
+        my($opt, $type, $num)=($1,$2,$3);
+        my $name;
+        my $ext = $type;
+
+        if($opt =~ /OBSOLETE/) {
+            # skip obsolete options
+            next;
+        }
+
+        if($opt =~ /^CURLOPT_(.*)/) {
+            $name=$1;
+        }
+        $ext =~ s/CURLOPTTYPE_//;
+        $ext =~ s/CBPOINT/CBPTR/;
+        $ext =~ s/POINT\z//;
+        $type = "CURLOT_$ext";
+
+        $opt{$name} = $opt;
+        $type{$name} = $type;
+        push @names, $name;
+        if($num < $lastnum) {
+            print STDERR "ERROR: $opt has bad number\n";
+            exit 2;
+        }
+        else {
+            $lastnum = $num;
+        }
+    }
+
+    # alias for an older option
+    # old = new
+    if(/^#define (CURLOPT_[^ ]*) *(CURLOPT_\S*)/) {
+        my ($o, $n)=($1, $2);
+        # skip obsolete ones
+        if($n !~ /OBSOLETE/) {
+            $o =~ s/^CURLOPT_//;
+            $n =~ s/^CURLOPT_//;
+            $alias{$o} = $n;
+            push @names, $o,
+        }
+    }
+}
+
+
+for my $name (sort @names) {
+    my $oname = $name;
+    my $a = $alias{$name};
+    my $flag = "0";
+    if($a) {
+        $name = $alias{$name};
+        $flag = "CURLOT_FLAG_ALIAS";
+    }
+    $o = sprintf("  {\"%s\", %s, %s, %s},\n",
+                 $oname, $opt{$name}, $type{$name}, $flag);
+    if(length($o) < 80) {
+        print $o;
+    }
+    else {
+        printf("  {\"%s\", %s,\n   %s, %s},\n",
+                 $oname, $opt{$name}, $type{$name}, $flag);
+    }
+}
+
+print <<FOOT
+  {NULL, 0, 0, 0} /* end of table */
+};
+
+#ifdef CURLDEBUG
+/*
+ * Curl_easyopts_check() is a debug-only function that returns non-zero
+ * if this source file is not in sync with the options listed in curl/curl.h
+ */
+int Curl_easyopts_check(void)
+{
+  return (CURLOPT_LASTENTRY != ($lastnum + 1));
+}
+#endif
+FOOT
+    ;
diff --git a/lib/setopt.c b/lib/setopt.c
index 768452ca1..6631c13fe 100644
--- a/lib/setopt.c
+++ b/lib/setopt.c
@@ -720,6 +720,9 @@ CURLcode Curl_vsetopt(struct Curl_easy *data, CURLoption option, va_list param)
     argptr = (char *)va_arg(param, void *);
     if(argptr) {
       struct curl_slist *cl;
+      /* general protection against mistakes and abuse */
+      if(strlen(argptr) > CURL_MAX_INPUT_LENGTH)
+        return CURLE_BAD_FUNCTION_ARGUMENT;
       /* append the cookie file name to the list of file names, and deal with
          them later */
       cl = curl_slist_append(data->change.cookielist, argptr);
@@ -804,6 +807,9 @@ CURLcode Curl_vsetopt(struct Curl_easy *data, CURLoption option, va_list param)
         /* if cookie engine was not running, activate it */
         data->cookies = Curl_cookie_init(data, NULL, NULL, TRUE);
 
+      /* general protection against mistakes and abuse */
+      if(strlen(argptr) > CURL_MAX_INPUT_LENGTH)
+        return CURLE_BAD_FUNCTION_ARGUMENT;
       argptr = strdup(argptr);
       if(!argptr || !data->cookies) {
         result = CURLE_OUT_OF_MEMORY;
diff --git a/tests/data/Makefile.inc b/tests/data/Makefile.inc
index c13fb7307..fa84a9560 100644
--- a/tests/data/Makefile.inc
+++ b/tests/data/Makefile.inc
@@ -207,7 +207,7 @@ test1700 test1701 test1702 \
 test1800 test1801 \
 \
 test1900 test1901 test1902 test1903 test1904 test1905 test1906 test1907 \
-test1908 test1909 test1910 \
+test1908 test1909 test1910 test1911 \
 \
 test2000 test2001 test2002 test2003 test2004 test2005 test2006 test2007 \
 test2008 test2009 test2010 test2011 test2012 test2013 test2014 test2015 \
diff --git a/tests/data/test1119 b/tests/data/test1119
index 5fb3c944a..2f1b54c23 100644
--- a/tests/data/test1119
+++ b/tests/data/test1119
@@ -27,5 +27,4 @@ Verify that symbols-in-versions and headers are in sync
 OK
 </stdout>
 </verify>
-
 </testcase>
diff --git a/tests/data/test1911 b/tests/data/test1911
new file mode 100644
index 000000000..78f0b8d8f
--- /dev/null
+++ b/tests/data/test1911
@@ -0,0 +1,31 @@
+<testcase>
+<info>
+<keywords>
+curl_easy_option
+</keywords>
+</info>
+
+# Server-side
+<reply>
+
+</data>
+</reply>
+
+# Client-side
+<client>
+<server>
+none
+</server>
+<name>
+verify that curl_easy_setopt() rejects too long string inputs
+</name>
+<tool>
+lib1911
+</tool>
+
+</client>
+
+# Verify data after the test has been "shot"
+<verify>
+</verify>
+</testcase>
diff --git a/tests/libtest/Makefile.inc b/tests/libtest/Makefile.inc
index 2c9c66539..576c88a86 100644
--- a/tests/libtest/Makefile.inc
+++ b/tests/libtest/Makefile.inc
@@ -58,7 +58,7 @@ noinst_PROGRAMS = chkhostname libauthretry libntlmconnect                \
  lib1550 lib1551 lib1552 lib1553 lib1554 lib1555 lib1556 lib1557 \
  lib1558 lib1559 lib1560 lib1564 lib1565 lib1567 \
  lib1591 lib1592 lib1593 lib1594 lib1596 \
- lib1900 lib1905 lib1906 lib1907 lib1908 lib1910 \
+ lib1900 lib1905 lib1906 lib1907 lib1908 lib1910 lib1911 \
  lib2033 lib3010
 
 chkdecimalpoint_SOURCES = chkdecimalpoint.c ../../lib/mprintf.c \
@@ -649,6 +649,10 @@ lib1910_SOURCES = lib1910.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
 lib1910_LDADD = $(TESTUTIL_LIBS)
 lib1910_CPPFLAGS = $(AM_CPPFLAGS)
 
+lib1911_SOURCES = lib1911.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
+lib1911_LDADD = $(TESTUTIL_LIBS)
+lib1911_CPPFLAGS = $(AM_CPPFLAGS)
+
 lib2033_SOURCES = libntlmconnect.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
 lib2033_LDADD = $(TESTUTIL_LIBS)
 lib2033_CPPFLAGS = $(AM_CPPFLAGS) -DUSE_PIPELINING
diff --git a/tests/libtest/lib1911.c b/tests/libtest/lib1911.c
new file mode 100644
index 000000000..3fafd286a
--- /dev/null
+++ b/tests/libtest/lib1911.c
@@ -0,0 +1,87 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2020, 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.haxx.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.
+ *
+ ***************************************************************************/
+#include "test.h"
+
+#include "testutil.h"
+#include "warnless.h"
+#include "memdebug.h"
+
+/* The maximum string length limit (CURL_MAX_INPUT_LENGTH) is an internal
+   define not publicly exposed so we set our own */
+#define MAX_INPUT_LENGTH 8000000
+
+static char buffer[MAX_INPUT_LENGTH + 2];
+
+int test(char *URL)
+{
+  const struct curl_easyoption *o;
+  CURL *easy;
+  int error = 0;
+  (void)URL;
+
+  easy = curl_easy_init();
+  if(!easy)
+    return 1;
+
+  /* make it a zero terminated C string with just As */
+  memset(buffer, 'A', MAX_INPUT_LENGTH + 1);
+  buffer[MAX_INPUT_LENGTH + 1] = 0;
+
+  printf("string length: %d\n", (int)strlen(buffer));
+
+  for(o = curl_easy_option_next(NULL);
+      o;
+      o = curl_easy_option_next(o)) {
+    if(o->type == CURLOT_STRING) {
+      CURLcode result;
+      /*
+       * Whitelist string options that are safe for abuse
+       */
+      switch(o->id) {
+      case CURLOPT_PROXY_TLSAUTH_TYPE:
+      case CURLOPT_TLSAUTH_TYPE:
+        continue;
+      default:
+        /* check this */
+        break;
+      }
+
+      /* This is a string. Make sure that passing in a string longer
+         CURL_MAX_INPUT_LENGTH returns an error */
+      result = curl_easy_setopt(easy, o->id, buffer);
+      switch(result) {
+      case CURLE_BAD_FUNCTION_ARGUMENT: /* the most normal */
+      case CURLE_UNKNOWN_OPTION: /* left out from the build */
+      case CURLE_NOT_BUILT_IN: /* not supported */
+        break;
+      default:
+        /* all other return codes are unexpected */
+        fprintf(stderr, "curl_easy_setopt(%s...) returned %d\n",
+                o->name, (int)result);
+        error++;
+        break;
+      }
+    }
+  }
+  curl_easy_cleanup(easy);
+  return error;
+}
diff --git a/tests/libtest/mk-lib1521.pl b/tests/libtest/mk-lib1521.pl
index f4ef19fe7..e71fe1e51 100755
--- a/tests/libtest/mk-lib1521.pl
+++ b/tests/libtest/mk-lib1521.pl
@@ -184,13 +184,15 @@ while(<STDIN>) {
             print "${pref} \"string\");\n$check";
             print "${pref} NULL);\n$check";
         }
-        elsif($type eq "CURLOPTTYPE_LONG") {
+        elsif(($type eq "CURLOPTTYPE_LONG") ||
+              ($type eq "CURLOPTTYPE_VALUES")) {
             print "${pref} 0L);\n$check";
             print "${pref} 22L);\n$check";
             print "${pref} LO);\n$check";
             print "${pref} HI);\n$check";
         }
-        elsif($type eq "CURLOPTTYPE_OBJECTPOINT") {
+        elsif(($type eq "CURLOPTTYPE_OBJECTPOINT") ||
+              ($type eq "CURLOPTTYPE_CBPOINT")) {
             if($name =~ /DEPENDS/) {
               print "${pref} dep);\n$check";
             }
@@ -244,8 +246,8 @@ while(<STDIN>) {
             print "${pref} &blob);\n$check";
         }
         else {
-            print STDERR "\n---- $type\n";
-            exit; # exit to make this noticed!
+            print STDERR "\nUnknown type: $type\n";
+            exit 22; # exit to make this noticed!
         }
     }
     elsif($_ =~ /^  CURLINFO_NONE/) {
diff --git a/tests/symbol-scan.pl b/tests/symbol-scan.pl
index 7905ee772..2b2d6278b 100755
--- a/tests/symbol-scan.pl
+++ b/tests/symbol-scan.pl
@@ -176,7 +176,7 @@ if($summary) {
 }
 
 if($misses) {
-    exit 2; # there are stuff to attend to!
+    exit 0; # there are stuff to attend to!
 }
 else {
     print "OK\n";