CURLOPT: bump CURLPROTO_* macros to long

This patch bumps the size of these macros from `int` to `long`, while
keeping their actual values the same. It may cause incompatibilities in
user code, requiring the bump of holder variables and/or adding casts:

- CURLPROTO_HTTP
- CURLPROTO_HTTPS
- CURLPROTO_FTP
- CURLPROTO_FTPS
- CURLPROTO_SCP
- CURLPROTO_SFTP
- CURLPROTO_TELNET
- CURLPROTO_LDAP
- CURLPROTO_LDAPS
- CURLPROTO_DICT
- CURLPROTO_FILE
- CURLPROTO_TFTP
- CURLPROTO_IMAP
- CURLPROTO_IMAPS
- CURLPROTO_POP3
- CURLPROTO_POP3S
- CURLPROTO_SMTP
- CURLPROTO_SMTPS
- CURLPROTO_RTSP
- CURLPROTO_RTMP
- CURLPROTO_RTMPT
- CURLPROTO_RTMPE
- CURLPROTO_RTMPTE
- CURLPROTO_RTMPS
- CURLPROTO_RTMPTS
- CURLPROTO_GOPHER
- CURLPROTO_SMB
- CURLPROTO_SMBS
- CURLPROTO_MQTT
- CURLPROTO_GOPHERS
- CURLPROTO_ALL

Also:
- keep existing cast within the documentation to make sure it applies
  to older curl versions as well.

Closes #18136

include/curl/curl.h

@@ -1072,37 +1072,37 @@ typedef CURLSTScode (*curl_hstswrite_callback)(CURL *easy,
 
 /* The CURLPROTO_ defines below are for the **deprecated** CURLOPT_*PROTOCOLS
    options. Do not use. */
-#define CURLPROTO_HTTP   (1<<0)
-#define CURLPROTO_HTTPS  (1<<1)
-#define CURLPROTO_FTP    (1<<2)
-#define CURLPROTO_FTPS   (1<<3)
-#define CURLPROTO_SCP    (1<<4)
-#define CURLPROTO_SFTP   (1<<5)
-#define CURLPROTO_TELNET (1<<6)
-#define CURLPROTO_LDAP   (1<<7)
-#define CURLPROTO_LDAPS  (1<<8)
-#define CURLPROTO_DICT   (1<<9)
-#define CURLPROTO_FILE   (1<<10)
-#define CURLPROTO_TFTP   (1<<11)
-#define CURLPROTO_IMAP   (1<<12)
-#define CURLPROTO_IMAPS  (1<<13)
-#define CURLPROTO_POP3   (1<<14)
-#define CURLPROTO_POP3S  (1<<15)
-#define CURLPROTO_SMTP   (1<<16)
-#define CURLPROTO_SMTPS  (1<<17)
-#define CURLPROTO_RTSP   (1<<18)
-#define CURLPROTO_RTMP   (1<<19)
-#define CURLPROTO_RTMPT  (1<<20)
-#define CURLPROTO_RTMPE  (1<<21)
-#define CURLPROTO_RTMPTE (1<<22)
-#define CURLPROTO_RTMPS  (1<<23)
-#define CURLPROTO_RTMPTS (1<<24)
-#define CURLPROTO_GOPHER (1<<25)
-#define CURLPROTO_SMB    (1<<26)
-#define CURLPROTO_SMBS   (1<<27)
-#define CURLPROTO_MQTT   (1<<28)
-#define CURLPROTO_GOPHERS (1<<29)
-#define CURLPROTO_ALL    (~0) /* enable everything */
+#define CURLPROTO_HTTP    (1L<<0)
+#define CURLPROTO_HTTPS   (1L<<1)
+#define CURLPROTO_FTP     (1L<<2)
+#define CURLPROTO_FTPS    (1L<<3)
+#define CURLPROTO_SCP     (1L<<4)
+#define CURLPROTO_SFTP    (1L<<5)
+#define CURLPROTO_TELNET  (1L<<6)
+#define CURLPROTO_LDAP    (1L<<7)
+#define CURLPROTO_LDAPS   (1L<<8)
+#define CURLPROTO_DICT    (1L<<9)
+#define CURLPROTO_FILE    (1L<<10)
+#define CURLPROTO_TFTP    (1L<<11)
+#define CURLPROTO_IMAP    (1L<<12)
+#define CURLPROTO_IMAPS   (1L<<13)
+#define CURLPROTO_POP3    (1L<<14)
+#define CURLPROTO_POP3S   (1L<<15)
+#define CURLPROTO_SMTP    (1L<<16)
+#define CURLPROTO_SMTPS   (1L<<17)
+#define CURLPROTO_RTSP    (1L<<18)
+#define CURLPROTO_RTMP    (1L<<19)
+#define CURLPROTO_RTMPT   (1L<<20)
+#define CURLPROTO_RTMPE   (1L<<21)
+#define CURLPROTO_RTMPTE  (1L<<22)
+#define CURLPROTO_RTMPS   (1L<<23)
+#define CURLPROTO_RTMPTS  (1L<<24)
+#define CURLPROTO_GOPHER  (1L<<25)
+#define CURLPROTO_SMB     (1L<<26)
+#define CURLPROTO_SMBS    (1L<<27)
+#define CURLPROTO_MQTT    (1L<<28)
+#define CURLPROTO_GOPHERS (1L<<29)
+#define CURLPROTO_ALL     (~0L) /* enable everything */
 
 /* long may be 32 or 64 bits, but we should never depend on anything else
    but 32 */

lib/doh.c

@@ -348,10 +348,10 @@ static CURLcode doh_probe_run(struct Curl_easy *data,
 #endif
 #ifndef DEBUGBUILD
   /* enforce HTTPS if not debug */
-  ERROR_CHECK_SETOPT(CURLOPT_PROTOCOLS, (long)CURLPROTO_HTTPS);
+  ERROR_CHECK_SETOPT(CURLOPT_PROTOCOLS, CURLPROTO_HTTPS);
 #else
   /* in debug mode, also allow http */
-  ERROR_CHECK_SETOPT(CURLOPT_PROTOCOLS, (long)CURLPROTO_HTTP|CURLPROTO_HTTPS);
+  ERROR_CHECK_SETOPT(CURLOPT_PROTOCOLS, CURLPROTO_HTTP|CURLPROTO_HTTPS);
 #endif
   ERROR_CHECK_SETOPT(CURLOPT_TIMEOUT_MS, (long)timeout_ms);
   ERROR_CHECK_SETOPT(CURLOPT_SHARE, (CURLSH *)data->share);

lib/urldata.h

@@ -70,11 +70,11 @@ struct curl_trc_featt;
  * platforms that have a >= 64-bit type and then we use such a type for the
  * protocol fields in the protocol handler.
  */
-#define CURLPROTO_WS     (1<<30)
+#define CURLPROTO_WS     (1L<<30)
 #define CURLPROTO_WSS    ((curl_prot_t)1<<31)
 #else
-#define CURLPROTO_WS 0
-#define CURLPROTO_WSS 0
+#define CURLPROTO_WS     0L
+#define CURLPROTO_WSS    0L
 #endif
 
 /* the default protocols accepting a redirect to */

tests/libtest/lib1535.c

@@ -80,7 +80,7 @@ static CURLcode test_lib1535(const char *URL)
   if(protocol != CURLPROTO_HTTP) {
     curl_mfprintf(stderr,
                   "%s:%d protocol of http resource is incorrect; "
-                  "expected %d but is %ld\n",
+                  "expected %ld but is %ld\n",
                   __FILE__, __LINE__, CURLPROTO_HTTP, protocol);
     res = CURLE_HTTP_RETURNED_ERROR;
     goto test_cleanup;