hs_pow: Make proof-of-work support optional in configure

This adds a new "pow" module for the user-visible proof
of work support in ./configure, and this disables
src/feature/hs/hs_pow at compile-time.

Signed-off-by: Micah Elizabeth Scott <beth@torproject.org>

1 files changed, 15 insertions, 5 deletions

diff --git a/src/app/config/config.c b/src/app/config/config.c
index cb71d0fb6d..24321b764f 100644
--- a/src/app/config/config.c
+++ b/src/app/config/config.c
@@ -88,9 +88,11 @@
 #include "feature/control/control.h"
 #include "feature/control/control_auth.h"
 #include "feature/control/control_events.h"
+#include "feature/dircache/dirserv.h"
 #include "feature/dirclient/dirclient_modes.h"
 #include "feature/hibernate/hibernate.h"
 #include "feature/hs/hs_config.h"
+#include "feature/hs/hs_pow.h"
 #include "feature/metrics/metrics.h"
 #include "feature/nodelist/dirlist.h"
 #include "feature/nodelist/networkstatus.h"
@@ -2731,11 +2733,19 @@ list_deprecated_options(void)
 static void
 list_enabled_modules(void)
 {
-  printf("%s: %s\n", "relay", have_module_relay() ? "yes" : "no");
-  printf("%s: %s\n", "dirauth", have_module_dirauth() ? "yes" : "no");
-  // We don't list dircache, because it cannot be enabled or disabled
-  // independently from relay.  Listing it here would proliferate
-  // test variants in test_parseconf.sh to no useful purpose.
+  static const struct {
+    const char *name;
+    bool have;
+  } list[] = {
+    { "relay", have_module_relay() },
+    { "dirauth", have_module_dirauth() },
+    { "dircache", have_module_dircache() },
+    { "pow", have_module_pow() }
+  };
+
+  for (unsigned i = 0; i < sizeof list / sizeof list[0]; i++) {
+    printf("%s: %s\n", list[i].name, list[i].have ? "yes" : "no");
+  }
 }
 
 /** Prints compile-time and runtime library versions. */