ipfs: add options to disable

- CPPFLAGS: `-DCURL_DISABLE_IPFS`
- configure: `--disable-ipfs`
- cmake: `-DCURL_DISABLE_IPFS=ON`

Fixes #14824
Closes #14827

src/tool_cfgable.c

@@ -110,7 +110,9 @@ static void free_config_fields(struct OperationConfig *config)
   config->url_get = NULL;
   config->url_out = NULL;
 
+#ifndef CURL_DISABLE_IPFS
   Curl_safefree(config->ipfs_gateway);
+#endif /* !CURL_DISABLE_IPFS */
   Curl_safefree(config->doh_url);
   Curl_safefree(config->cipher_list);
   Curl_safefree(config->proxy_cipher_list);

src/tool_cfgable.h

@@ -130,7 +130,9 @@ struct OperationConfig {
   struct getout *url_get;   /* point to the node to fill in URL */
   struct getout *url_out;   /* point to the node to fill in outfile */
   struct getout *url_ul;    /* point to the node to fill in upload */
+#ifndef CURL_DISABLE_IPFS
   char *ipfs_gateway;
+#endif /* !CURL_DISABLE_IPFS */
   char *doh_url;
   char *cipher_list;
   char *proxy_cipher_list;

src/tool_getparam.c

@@ -171,7 +171,9 @@ static const struct LongShort aliases[]= {
   {"insecure",                   ARG_BOOL, 'k', C_INSECURE},
   {"interface",                  ARG_STRG, ' ', C_INTERFACE},
   {"ip-tos",                     ARG_STRG, ' ', C_IP_TOS},
+#ifndef CURL_DISABLE_IPFS
   {"ipfs-gateway",               ARG_STRG, ' ', C_IPFS_GATEWAY},
+#endif /* !CURL_DISABLE_IPFS */
   {"ipv4",                       ARG_NONE, '4', C_IPV4},
   {"ipv6",                       ARG_NONE, '6', C_IPV6},
   {"json",                       ARG_STRG, ' ', C_JSON},
@@ -1321,9 +1323,11 @@ ParameterError getparameter(const char *flag, /* f or -long-flag */
       if(!err && (config->maxredirs < -1))
         err = PARAM_BAD_NUMERIC;
       break;
+#ifndef CURL_DISABLE_IPFS
     case C_IPFS_GATEWAY: /* --ipfs-gateway */
       err = getstr(&config->ipfs_gateway, nextarg, DENY_BLANK);
       break;
+#endif /* !CURL_DISABLE_IPFS */
     case C_PROXY_NTLM: /* --proxy-ntlm */
       if(!feature_ntlm)
         err = PARAM_LIBCURL_DOESNT_SUPPORT;

src/tool_help.c

@@ -331,6 +331,7 @@ void tool_version_info(void)
   printf("Release-Date: %s\n", LIBCURL_TIMESTAMP);
 #endif
   if(built_in_protos[0]) {
+#ifndef CURL_DISABLE_IPFS
     const char *insert = NULL;
     /* we have ipfs and ipns support if libcurl has http support */
     for(builtin = built_in_protos; *builtin; ++builtin) {
@@ -345,16 +346,19 @@ void tool_version_info(void)
         insert = *builtin;
       }
     }
+#endif /* !CURL_DISABLE_IPFS */
     printf("Protocols:");
     for(builtin = built_in_protos; *builtin; ++builtin) {
       /* Special case: do not list rtmp?* protocols.
          They may only appear together with "rtmp" */
       if(!curl_strnequal(*builtin, "rtmp", 4) || !builtin[0][4])
         printf(" %s", *builtin);
+#ifndef CURL_DISABLE_IPFS
       if(insert && insert == *builtin) {
         printf(" ipfs ipns");
         insert = NULL;
       }
+#endif /* !CURL_DISABLE_IPFS */
     }
     puts(""); /* newline */
   }

src/tool_ipfs.c

@@ -23,6 +23,7 @@
  ***************************************************************************/
 #include "tool_setup.h"
 
+#ifndef CURL_DISABLE_IPFS
 #include "curlx.h"
 #include "dynbuf.h"
 
@@ -287,3 +288,4 @@ clean:
   }
   return result;
 }
+#endif /* !CURL_DISABLE_IPFS */

src/tool_ipfs.h

@@ -25,9 +25,11 @@
  ***************************************************************************/
 #include "tool_setup.h"
 
+#ifndef CURL_DISABLE_IPFS
 #define MAX_GATEWAY_URL_LEN 10000
 
 CURLcode ipfs_url_rewrite(CURLU *uh, const char *protocol, char **url,
                           struct OperationConfig *config);
 
 #endif /* HEADER_CURL_TOOL_IPFS_H */
+#endif /* !CURL_DISABLE_IPFS */

src/tool_libinfo.c

@@ -49,8 +49,10 @@ const char *proto_rtsp = NULL;
 const char *proto_scp = NULL;
 const char *proto_sftp = NULL;
 const char *proto_tftp = NULL;
+#ifndef CURL_DISABLE_IPFS
 const char *proto_ipfs = "ipfs";
 const char *proto_ipns = "ipns";
+#endif /* !CURL_DISABLE_IPFS */
 
 static struct proto_name_tokenp {
   const char   *proto_name;

src/tool_operate.c

@@ -793,6 +793,9 @@ static CURLcode url_proto(char **url,
                        CURLU_GUESS_SCHEME | CURLU_NON_SUPPORT_SCHEME) &&
          !curl_url_get(uh, CURLUPART_SCHEME, &schemep,
                        CURLU_DEFAULT_SCHEME)) {
+#ifdef CURL_DISABLE_IPFS
+        (void)config;
+#else
         if(curl_strequal(schemep, proto_ipfs) ||
            curl_strequal(schemep, proto_ipns)) {
           result = ipfs_url_rewrite(uh, schemep, url, config);
@@ -805,6 +808,7 @@ static CURLcode url_proto(char **url,
             config->synthetic_error = TRUE;
         }
         else
+#endif /* !CURL_DISABLE_IPFS */
           proto = proto_token(schemep);
 
         curl_free(schemep);