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[tor-commits] [tor/master] Add warning message when a managed proxy dies during configuration.



commit a9f786758dc59ee28fbbd16228e38ff9ba1bc7a9
Author: George Kadianakis <desnacked@xxxxxxxxxx>
Date:   Tue Oct 23 02:51:31 2012 +0300

    Add warning message when a managed proxy dies during configuration.
---
 changes/bug7195     |    4 ++++
 src/common/util.c   |   19 +++++++++++++++++++
 src/common/util.h   |    2 ++
 src/or/transports.c |    9 ++++++++-
 4 files changed, 33 insertions(+), 1 deletions(-)

diff --git a/changes/bug7195 b/changes/bug7195
new file mode 100644
index 0000000..86ddeca
--- /dev/null
+++ b/changes/bug7195
@@ -0,0 +1,4 @@
+  o Minor bugfixes:
+    - Add warning message when a managed proxy dies during
+      configuration. Fixes bug 7195; bugfix on 0.2.4.2-alpha.
+
diff --git a/src/common/util.c b/src/common/util.c
index 75eb233..1b0603a 100644
--- a/src/common/util.c
+++ b/src/common/util.c
@@ -4461,6 +4461,25 @@ tor_split_lines(smartlist_t *sl, char *buf, int len)
   return smartlist_len(sl);
 }
 
+/** Return a string corresponding to <b>stream_status</b>. */
+const char *
+stream_status_to_string(enum stream_status stream_status)
+{
+  switch (stream_status) {
+    case IO_STREAM_OKAY:
+      return "okay";
+    case IO_STREAM_EAGAIN:
+      return "temporarily unavailable";
+    case IO_STREAM_TERM:
+      return "terminated";
+    case IO_STREAM_CLOSED:
+      return "closed";
+    default:
+      tor_fragile_assert();
+      return "unknown";
+  }
+}
+
 #ifdef _WIN32
 
 /** Return a smartlist containing lines outputted from
diff --git a/src/common/util.h b/src/common/util.h
index aa2087b..fabfdb1 100644
--- a/src/common/util.h
+++ b/src/common/util.h
@@ -307,6 +307,8 @@ enum stream_status {
   IO_STREAM_CLOSED
 };
 
+const char *stream_status_to_string(enum stream_status stream_status);
+
 enum stream_status get_string_from_pipe(FILE *stream, char *buf, size_t count);
 
 /** Return values from file_status(); see that function's documentation
diff --git a/src/or/transports.c b/src/or/transports.c
index a532f87..0319071 100644
--- a/src/or/transports.c
+++ b/src/or/transports.c
@@ -614,8 +614,15 @@ configure_proxy(managed_proxy_t *mp)
     tor_get_lines_from_handle(tor_process_get_stdout_pipe(mp->process_handle),
                               &stream_status);
   if (!proxy_output) { /* failed to get input from proxy */
-    if (stream_status != IO_STREAM_EAGAIN)
+    if (stream_status != IO_STREAM_EAGAIN) { /* bad stream status! */
       mp->conf_state = PT_PROTO_BROKEN;
+      log_warn(LD_GENERAL, "The communication stream of managed proxy '%s' "
+               "is '%s'. Most probably the managed proxy stopped running. "
+               "This might be a bug of the managed proxy, a bug of Tor, or "
+               "a misconfiguration. Please enable logging on your managed "
+               "proxy and check the logs for errors.",
+               mp->argv[0], stream_status_to_string(stream_status));
+    }
 
     goto done;
   }



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