Auto merge of #3137 - str4d:2943-remove-auto-senescence-option, r=ebfull

Remove config option -disabledeprecation

Closes #2943.

doc/release-notes.md

@@ -4,3 +4,23 @@ release-notes at release time)
 Notable changes
 ===============
 
+`-disabledeprecation` removal
+-----------------------------
+
+In release 1.0.9 we implemented automatic deprecation of `zcashd` software
+versions made by the Zcash Company. The configuration option
+`-disabledeprecation` was added as a way for users to specifically choose to
+stay on a particular software version. However, it incorrectly implied that
+deprecated releases would still be supported.
+
+This release removes the `-disabledeprecation` option, so that `zcashd` software
+versions made by the Zcash Company will always shut down in accordance with the
+defined deprecation policy (currently 16 weeks after release). Users who wish to
+use a different policy must now specifically choose to either:
+
+- edit and compile the source code themselves, or
+- obtain a software version from someone else who has done so (and obtain
+  support from them).
+
+Either way, it is much clearer that the software they are running is not
+supported by the Zcash Company.

src/deprecation.cpp

@@ -20,7 +20,6 @@ void EnforceNodeDeprecation(int nHeight, bool forceLogging, bool fThread) {
     if (networkID != "main") return;
 
     int blocksToDeprecation = DEPRECATION_HEIGHT - nHeight;
-    bool disableDeprecation = (GetArg("-disabledeprecation", "") == CLIENT_VERSION_STR);
     if (blocksToDeprecation <= 0) {
         // In order to ensure we only log once per process when deprecation is
         // disabled (to avoid log spam), we only need to log in two cases:
@@ -32,31 +31,16 @@ void EnforceNodeDeprecation(int nHeight, bool forceLogging, bool fThread) {
             auto msg = strprintf(_("This version has been deprecated as of block height %d."),
                                  DEPRECATION_HEIGHT) + " " +
                        _("You should upgrade to the latest version of Zcash.");
-            if (!disableDeprecation) {
-                msg += " " + strprintf(_("To disable deprecation for this version, set '%s' to '%s'."),
-                                       "disabledeprecation", CLIENT_VERSION_STR);
-            }
             LogPrintf("*** %s\n", msg);
             CAlert::Notify(msg, fThread);
             uiInterface.ThreadSafeMessageBox(msg, "", CClientUIInterface::MSG_ERROR);
         }
-        if (!disableDeprecation) {
-            StartShutdown();
-        }
+        StartShutdown();
     } else if (blocksToDeprecation == DEPRECATION_WARN_LIMIT ||
                (blocksToDeprecation < DEPRECATION_WARN_LIMIT && forceLogging)) {
-        std::string msg;
-        if (disableDeprecation) {
-            msg = strprintf(_("This version will be deprecated at block height %d."),
+        std::string msg = strprintf(_("This version will be deprecated at block height %d, and will automatically shut down."),
                             DEPRECATION_HEIGHT) + " " +
                   _("You should upgrade to the latest version of Zcash.");
-        } else {
-            msg = strprintf(_("This version will be deprecated at block height %d, and will automatically shut down."),
-                            DEPRECATION_HEIGHT) + " " +
-                  _("You should upgrade to the latest version of Zcash.") + " " +
-                  strprintf(_("To disable deprecation for this version, set '%s' to '%s'."),
-                            "disabledeprecation", CLIENT_VERSION_STR);
-        }
         LogPrintf("*** %s\n", msg);
         CAlert::Notify(msg, fThread);
         uiInterface.ThreadSafeMessageBox(msg, "", CClientUIInterface::MSG_WARNING);

src/gtest/test_deprecation.cpp

@@ -107,22 +107,6 @@ TEST_F(DeprecationTest, DeprecatedNodeErrorIsRepeatedOnStartup) {
     EXPECT_TRUE(ShutdownRequested());
 }
 
-TEST_F(DeprecationTest, DeprecatedNodeShutsDownIfOldVersionDisabled) {
-    EXPECT_FALSE(ShutdownRequested());
-    mapArgs["-disabledeprecation"] = "1.0.0";
-    EXPECT_CALL(mock_, ThreadSafeMessageBox(::testing::_, "", CClientUIInterface::MSG_ERROR));
-    EnforceNodeDeprecation(DEPRECATION_HEIGHT);
-    EXPECT_TRUE(ShutdownRequested());
-}
-
-TEST_F(DeprecationTest, DeprecatedNodeKeepsRunningIfCurrentVersionDisabled) {
-    EXPECT_FALSE(ShutdownRequested());
-    mapArgs["-disabledeprecation"] = CLIENT_VERSION_STR;
-    EXPECT_CALL(mock_, ThreadSafeMessageBox(::testing::_, "", CClientUIInterface::MSG_ERROR));
-    EnforceNodeDeprecation(DEPRECATION_HEIGHT);
-    EXPECT_FALSE(ShutdownRequested());
-}
-
 TEST_F(DeprecationTest, DeprecatedNodeIgnoredOnRegtest) {
     SelectParams(CBaseChainParams::REGTEST);
     EXPECT_FALSE(ShutdownRequested());
@@ -150,10 +134,9 @@ TEST_F(DeprecationTest, AlertNotify) {
     EXPECT_EQ(r.size(), 1u);
 
     // -alertnotify restricts the message to safe characters.
-    auto expectedMsg = SanitizeString(strprintf(
-        "This version will be deprecated at block height %d, and will automatically shut down. You should upgrade to the latest version of Zcash. To disable deprecation for this version, set disabledeprecation to %s.",
-        DEPRECATION_HEIGHT,
-        CLIENT_VERSION_STR));
+    auto expectedMsg = strprintf(
+        "This version will be deprecated at block height %d, and will automatically shut down. You should upgrade to the latest version of Zcash.",
+        DEPRECATION_HEIGHT);
 
     // Windows built-in echo semantics are different than posixy shells. Quotes and
     // whitespace are printed literally.

src/init.cpp

@@ -351,8 +351,6 @@ std::string HelpMessage(HelpMessageMode mode)
 #endif
     }
     strUsage += HelpMessageOpt("-datadir=<dir>", _("Specify data directory"));
-    strUsage += HelpMessageOpt("-disabledeprecation=<version>", strprintf(_("Disable block-height node deprecation and automatic shutdown (example: -disabledeprecation=%s)"),
-        FormatVersion(CLIENT_VERSION)));
     strUsage += HelpMessageOpt("-exportdir=<dir>", _("Specify directory to be used when exporting data"));
     strUsage += HelpMessageOpt("-dbcache=<n>", strprintf(_("Set database cache size in megabytes (%d to %d, default: %d)"), nMinDbCache, nMaxDbCache, nDefaultDbCache));
     strUsage += HelpMessageOpt("-loadblock=<file>", _("Imports blocks from external blk000??.dat file") + " " + _("on startup"));

src/rpcnet.cpp

@@ -410,7 +410,7 @@ UniValue getdeprecationinfo(const UniValue& params, bool fHelp)
             "{\n"
             "  \"version\": xxxxx,                      (numeric) the server version\n"
             "  \"subversion\": \"/MagicBean:x.y.z[-v]/\",     (string) the server subversion string\n"
-            "  \"deprecationheight\": xxxxx,            (numeric) the block height at which this version will deprecate and shut down (unless -disabledeprecation is set)\n"
+            "  \"deprecationheight\": xxxxx,            (numeric) the block height at which this version will deprecate and shut down\n"
             "}\n"
             "\nExamples:\n"
             + HelpExampleCli("getdeprecationinfo", "")