commit b5e142cb1ba2dcdcf0c7586cdb3bd1efa2bd78b7 Author: Nick Mathewson <nickm@torproject.org> Date: Tue May 6 21:34:40 2014 -0400 Log an error reply from tor-fw-helper correctly. Fix for bug 9781; bugfix on cd05f35d2cdf50 in 0.2.4.2-alpha. --- changes/bug9781 | 5 +++++ src/common/util.c | 21 +++++++++++++++++---- 2 files changed, 22 insertions(+), 4 deletions(-) diff --git a/changes/bug9781 b/changes/bug9781 new file mode 100644 index 0000000..0a3c557 --- /dev/null +++ b/changes/bug9781 @@ -0,0 +1,5 @@ + o Minor bugfixes (tor-fw-helper): + + - Give a correct log message when tor-fw-helper fails to launch. + (Previously, we would say something like "tor-fw-helper sent us a + string we could not parse".) Fixes bug 9781; bugfix on 0.2.4.2-alpha. diff --git a/src/common/util.c b/src/common/util.c index d82677d..a27fe4b 100644 --- a/src/common/util.c +++ b/src/common/util.c @@ -4789,7 +4789,7 @@ get_string_from_pipe(FILE *stream, char *buf_out, size_t count) /** Parse a <b>line</b> from tor-fw-helper and issue an appropriate * log message to our user. */ static void -handle_fw_helper_line(const char *line) +handle_fw_helper_line(const char *executable, const char *line) { smartlist_t *tokens = smartlist_new(); char *message = NULL; @@ -4800,6 +4800,19 @@ handle_fw_helper_line(const char *line) int port = 0; int success = 0; + if (strcmpstart(line, SPAWN_ERROR_MESSAGE) == 0) { + /* We need to check for SPAWN_ERROR_MESSAGE again here, since it's + * possible that it got sent after we tried to read it in log_from_pipe. + * + * XXX Ideally, we should be using one of stdout/stderr for the real + * output, and one for the output of the startup code. We used to do that + * before cd05f35d2c. + */ + int child_status; + log_portfw_spawn_error_message(line, executable, &child_status); + goto done; + } + smartlist_split_string(tokens, line, NULL, SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, -1); @@ -4879,7 +4892,7 @@ handle_fw_helper_line(const char *line) /** Read what tor-fw-helper has to say in its stdout and handle it * appropriately */ static int -handle_fw_helper_output(process_handle_t *process_handle) +handle_fw_helper_output(const char *executable, process_handle_t *process_handle) { smartlist_t *fw_helper_output = NULL; enum stream_status stream_status = 0; @@ -4894,7 +4907,7 @@ handle_fw_helper_output(process_handle_t *process_handle) /* Handle the lines we got: */ SMARTLIST_FOREACH_BEGIN(fw_helper_output, char *, line) { - handle_fw_helper_line(line); + handle_fw_helper_line(executable, line); tor_free(line); } SMARTLIST_FOREACH_END(line); @@ -5009,7 +5022,7 @@ tor_check_port_forwarding(const char *filename, stderr_status = log_from_pipe(child_handle->stderr_handle, LOG_INFO, filename, &retval); #endif - if (handle_fw_helper_output(child_handle) < 0) { + if (handle_fw_helper_output(filename, child_handle) < 0) { log_warn(LD_GENERAL, "Failed to handle fw helper output."); stdout_status = -1; retval = -1;