Merge #15993: net: Drop support of the insecure miniUPnPc versions

59cb722fd050393a69f1e0df97d857c893d19d80 Update configure to reject unsafe miniUPnPc API ver (Hennadii Stepanov)
ab2190557ec2757fa48b52855b05561854af49af doc: Add release notes for 15993 (Hennadii Stepanov)
02709e95601c6020a87a6a05ee1d00c13fc38f9b Align formatting with clang-format (Hennadii Stepanov)
91a1b8508358d04685391651aea303ebce1c3d05 Use PACKAGE_NAME in UPnP description (Hennadii Stepanov)
9f76e45b9d6671e2074fb7a3885db703045a791f Drop support of insecure miniUPnPc versions (Hennadii Stepanov)

Pull request description:

  1. Minimum supported miniUPnPc API version is set to 10:
  - https://packages.ubuntu.com/xenial/libminiupnpc-dev
  - https://packages.debian.org/jessie/libminiupnpc-dev

  Refs:
  - #6583
  - #6789
  - #10414

  2. The hardcoded "Bitcoin" replaced with `PACKAGE_NAME`:
  ![Screenshot from 2019-05-06 23-10-29](https://user-images.githubusercontent.com/32963518/57253178-afc60780-7056-11e9-83c9-e85670c58c1e.png)

  3. Also style-only commit applied.

  Pardon: could not reopen my previous PR #15966.

ACKs for top commit:
  ryanofsky:
    utACK 59cb722fd050393a69f1e0df97d857c893d19d80. Changes since last review: adding a new commit which updates configure script to fall back to disabling upnp if version is too old, adding a requested comment explaining static_assert condition, and fixing a spelling (jessy/jessie)

Tree-SHA512: 42ed11bc2fb2ec83d5dd58e2383da5444a24fd572707f6cf10b622cb8943e28adfcca4750d06801024c4472625b5ea9279516fbd9d2ccebc9bbaafe1d148e80d

4 files changed, 43 insertions, 33 deletions

diff --git a/.travis.yml b/.travis.yml
index b893f35699..add59d49e0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -144,7 +144,7 @@ jobs:
       env: >-
         HOST=x86_64-unknown-linux-gnu
         DOCKER_NAME_TAG=ubuntu:14.04
-        PACKAGES="python3-zmq qtbase5-dev qttools5-dev-tools libicu-dev libpng-dev libssl-dev libevent-dev bsdmainutils libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-test-dev libboost-thread-dev libdb5.1++-dev libminiupnpc-dev libzmq3-dev libprotobuf-dev protobuf-compiler libqrencode-dev"
+        PACKAGES="python3-zmq qtbase5-dev qttools5-dev-tools libicu-dev libpng-dev libssl-dev libevent-dev bsdmainutils libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-test-dev libboost-thread-dev libdb5.1++-dev libzmq3-dev libprotobuf-dev protobuf-compiler libqrencode-dev"
         NO_DEPENDS=1
         RUN_FUNCTIONAL_TESTS=false
         GOAL="install"
diff --git a/configure.ac b/configure.ac
index 220c82748e..118d52d423 100644
--- a/configure.ac
+++ b/configure.ac
@@ -994,6 +994,26 @@ if test x$use_upnp != xno; then
     [AC_CHECK_LIB([miniupnpc], [upnpDiscover], [MINIUPNPC_LIBS=-lminiupnpc], [have_miniupnpc=no])],
     [have_miniupnpc=no]
   )
+dnl The minimum supported miniUPnPc API version is set to 10. This keeps compatibility
+dnl with Ubuntu 16.04 LTS and Debian 8 libminiupnpc-dev packages.
+if test x$have_miniupnpc != xno; then
+  AC_MSG_CHECKING([whether miniUPnPc API version is supported])
+  AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
+      @%:@include <miniupnpc/miniupnpc.h>
+    ]], [[
+      #if MINIUPNPC_API_VERSION >= 10
+      // Everything is okay
+      #else
+      #  error miniUPnPc API version is too old
+      #endif
+    ]])],[
+      AC_MSG_RESULT(yes)
+    ],[
+    AC_MSG_RESULT(no)
+    AC_MSG_WARN([miniUPnPc API version < 10 is unsupported, disabling UPnP support.])
+    have_miniupnpc=no
+  ])
+fi
 fi
 
 if test x$build_bitcoin_wallet$build_bitcoin_cli$build_bitcoin_tx$build_bitcoind$bitcoin_enable_qt$use_tests$use_bench = xnonononononono; then
@@ -1387,9 +1407,10 @@ dnl enable upnp support
 AC_MSG_CHECKING([whether to build with support for UPnP])
 if test x$have_miniupnpc = xno; then
   if test x$use_upnp = xyes; then
-     AC_MSG_ERROR("UPnP requested but cannot be built. use --without-miniupnpc")
+     AC_MSG_ERROR("UPnP requested but cannot be built. Use --without-miniupnpc.")
   fi
   AC_MSG_RESULT(no)
+  use_upnp=no
 else
   if test x$use_upnp != xno; then
     AC_MSG_RESULT(yes)
diff --git a/doc/release-notes-15993.md b/doc/release-notes-15993.md
new file mode 100644
index 0000000000..493c7126ee
--- /dev/null
+++ b/doc/release-notes-15993.md
@@ -0,0 +1,3 @@
+Build system changes
+--------------------
+The minimum supported miniUPnPc API version is set to 10. This keeps compatibility with Ubuntu 16.04 LTS and Debian 8 `libminiupnpc-dev` packages. Please note, on Debian this package is still vulnerable to [CVE-2017-8798](https://security-tracker.debian.org/tracker/CVE-2017-8798) (in jessie only) and [CVE-2017-1000494](https://security-tracker.debian.org/tracker/CVE-2017-1000494) (both in jessie and in stretch).
diff --git a/src/net.cpp b/src/net.cpp
index 8e263b7953..7d6eb31a7c 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -37,6 +37,9 @@
 #include <miniupnpc/miniwget.h>
 #include <miniupnpc/upnpcommands.h>
 #include <miniupnpc/upnperrors.h>
+// The minimum supported miniUPnPc API version is set to 10. This keeps compatibility
+// with Ubuntu 16.04 LTS and Debian 8 libminiupnpc-dev packages.
+static_assert(MINIUPNPC_API_VERSION >= 10, "miniUPnPc API version >= 10 assumed");
 #endif
 
 #include <unordered_map>
@@ -1404,16 +1407,10 @@ static void ThreadMapPort()
     struct UPNPDev * devlist = nullptr;
     char lanaddr[64];
 
-#ifndef UPNPDISCOVER_SUCCESS
-    /* miniupnpc 1.5 */
-    devlist = upnpDiscover(2000, multicastif, minissdpdpath, 0);
-#elif MINIUPNPC_API_VERSION < 14
-    /* miniupnpc 1.6 */
     int error = 0;
+#if MINIUPNPC_API_VERSION < 14
     devlist = upnpDiscover(2000, multicastif, minissdpdpath, 0, 0, &error);
 #else
-    /* miniupnpc 1.9.20150730 */
-    int error = 0;
     devlist = upnpDiscover(2000, multicastif, minissdpdpath, 0, 0, 2, &error);
 #endif
 
@@ -1427,43 +1424,32 @@ static void ThreadMapPort()
         if (fDiscover) {
             char externalIPAddress[40];
             r = UPNP_GetExternalIPAddress(urls.controlURL, data.first.servicetype, externalIPAddress);
-            if(r != UPNPCOMMAND_SUCCESS)
+            if (r != UPNPCOMMAND_SUCCESS) {
                 LogPrintf("UPnP: GetExternalIPAddress() returned %d\n", r);
-            else
-            {
-                if(externalIPAddress[0])
-                {
+            } else {
+                if (externalIPAddress[0]) {
                     CNetAddr resolved;
-                    if(LookupHost(externalIPAddress, resolved, false)) {
+                    if (LookupHost(externalIPAddress, resolved, false)) {
                         LogPrintf("UPnP: ExternalIPAddress = %s\n", resolved.ToString().c_str());
                         AddLocal(resolved, LOCAL_UPNP);
                     }
-                }
-                else
+                } else {
                     LogPrintf("UPnP: GetExternalIPAddress failed.\n");
+                }
             }
         }
 
-        std::string strDesc = "Bitcoin " + FormatFullVersion();
+        std::string strDesc = PACKAGE_NAME " " + FormatFullVersion();
 
         do {
-#ifndef UPNPDISCOVER_SUCCESS
-            /* miniupnpc 1.5 */
-            r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
-                                port.c_str(), port.c_str(), lanaddr, strDesc.c_str(), "TCP", 0);
-#else
-            /* miniupnpc 1.6 */
-            r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,
-                                port.c_str(), port.c_str(), lanaddr, strDesc.c_str(), "TCP", 0, "0");
-#endif
+            r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype, port.c_str(), port.c_str(), lanaddr, strDesc.c_str(), "TCP", 0, "0");
 
-            if(r!=UPNPCOMMAND_SUCCESS)
-                LogPrintf("AddPortMapping(%s, %s, %s) failed with code %d (%s)\n",
-                    port, port, lanaddr, r, strupnperror(r));
-            else
+            if (r != UPNPCOMMAND_SUCCESS) {
+                LogPrintf("AddPortMapping(%s, %s, %s) failed with code %d (%s)\n", port, port, lanaddr, r, strupnperror(r));
+            } else {
                 LogPrintf("UPnP Port Mapping successful.\n");
-        }
-        while(g_upnp_interrupt.sleep_for(std::chrono::minutes(20)));
+            }
+        } while (g_upnp_interrupt.sleep_for(std::chrono::minutes(20)));
 
         r = UPNP_DeletePortMapping(urls.controlURL, data.first.servicetype, port.c_str(), "TCP", 0);
         LogPrintf("UPNP_DeletePortMapping() returned: %d\n", r);