From bfdfaae0405aa683cdae85bde58da742f4b59ae5 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Tue, 8 Oct 2019 13:13:31 -0400
Subject: [PATCH] Move responsibility for setting the "quiet level" into a
 table.

Previously this was done with a big list of options in main.c which
implied "hush" or "quiet".  One of these options ("--digests") no
longer existed, but we still checked for it.

Now we use the table of command-line-only arguments to set this
value.
---
 src/app/config/config.c | 35 +++++++++++++++++++++++++----------
 src/app/config/config.h |  3 +++
 src/app/main/main.c     | 30 ++++++------------------------
 3 files changed, 34 insertions(+), 34 deletions(-)

diff --git a/src/app/config/config.c b/src/app/config/config.c
index 734bd0f928..ea6a5e2336 100644
--- a/src/app/config/config.c
+++ b/src/app/config/config.c
@@ -2459,6 +2459,8 @@ static const struct {
   takes_argument_t takes_argument;
   /** If not CMD_RUN_TOR, what should Tor do when it starts? */
   tor_cmdline_mode_t command;
+  /** If nonzero, set the quiet level to this. 1 is "hush", 2 is "quiet" */
+  int quiet;
 } CMDLINE_ONLY_OPTIONS[] = {
   { .name="-f",
     .takes_argument=ARGUMENT_NECESSARY },
@@ -2467,10 +2469,12 @@ static const struct {
     .takes_argument=ARGUMENT_NECESSARY },
   { .name="--hash-password",
     .takes_argument=ARGUMENT_NECESSARY,
-    .command=CMD_HASH_PASSWORD },
+    .command=CMD_HASH_PASSWORD,
+    .quiet=1  },
   { .name="--dump-config",
     .takes_argument=ARGUMENT_OPTIONAL,
-    .command=CMD_DUMP_CONFIG },
+    .command=CMD_DUMP_CONFIG,
+    .quiet=2 },
   { .name="--list-fingerprint",
     .command=CMD_LIST_FINGERPRINT },
   { .name="--keygen",
@@ -2485,20 +2489,28 @@ static const struct {
   { .name="--verify-config",
     .command=CMD_VERIFY_CONFIG },
   { .name="--ignore-missing-torrc" },
-  { .name="--quiet" },
-  { .name="--hush" },
+  { .name="--quiet",
+    .quiet=2 },
+  { .name="--hush",
+    .quiet=1 },
   { .name="--version",
-    .command=CMD_OTHER },
+    .command=CMD_OTHER,
+    .quiet=1 },
   { .name="--list-modules",
-    .command=CMD_OTHER },
+    .command=CMD_OTHER,
+    .quiet=1 },
   { .name="--library-versions",
-    .command=CMD_OTHER },
+    .command=CMD_OTHER,
+    .quiet=1 },
   { .name="-h",
-    .command=CMD_OTHER },
+    .command=CMD_OTHER,
+    .quiet=1 },
   { .name="--help",
-    .command=CMD_OTHER },
+    .command=CMD_OTHER,
+    .quiet=1  },
   { .name="--list-torrc-options",
-    .command=CMD_OTHER },
+    .command=CMD_OTHER,
+    .quiet=1 },
   { .name="--list-deprecated-options",
     .command=CMD_OTHER },
   { .name="--nt-service" },
@@ -2541,6 +2553,9 @@ config_parse_commandline(int argc, char **argv, int ignore_errors)
           is_a_command = true;
           result->command = CMDLINE_ONLY_OPTIONS[j].command;
         }
+        int quiet = CMDLINE_ONLY_OPTIONS[j].quiet;
+        if (quiet > result->quiet_level)
+          result->quiet_level = quiet;
         break;
       }
     }
diff --git a/src/app/config/config.h b/src/app/config/config.h
index 582b97d74b..8fc10d504a 100644
--- a/src/app/config/config.h
+++ b/src/app/config/config.h
@@ -208,6 +208,9 @@ typedef struct {
   tor_cmdline_mode_t command;
   /** Argument for the command mode, if any. */
   const char *command_arg;
+  /** How quiet have we been told to be?  1 for "hush", and 2 for "quiet".
+   */
+  int quiet_level;
 } parsed_cmdline_t;
 
 parsed_cmdline_t *config_parse_commandline(int argc, char **argv,
diff --git a/src/app/main/main.c b/src/app/main/main.c
index ad8253cc7e..95dccbee64 100644
--- a/src/app/main/main.c
+++ b/src/app/main/main.c
@@ -547,40 +547,22 @@ tor_init(int argc, char *argv[])
   hs_init();
 
   {
-  /* We search for the "quiet" option first, since it decides whether we
-   * will log anything at all to the command line. */
+    /* We check for the "quiet"/"hush" settings first, since they decide
+       whether we log anything at all to stdout. */
     parsed_cmdline_t *cmdline;
-    const config_line_t *cl = NULL;
     cmdline = config_parse_commandline(argc, argv, 1);
-    if (cmdline != NULL) {
-      cl = cmdline->cmdline_opts;
-    }
-    for (; cl; cl = cl->next) {
-      if (!strcmp(cl->key, "--hush"))
-        quiet = 1;
-      if (!strcmp(cl->key, "--quiet") ||
-          !strcmp(cl->key, "--dump-config"))
-        quiet = 2;
-      /* The following options imply --hush */
-      if (!strcmp(cl->key, "--version") || !strcmp(cl->key, "--digests") ||
-          !strcmp(cl->key, "--list-torrc-options") ||
-          !strcmp(cl->key, "--library-versions") ||
-          !strcmp(cl->key, "--list-modules") ||
-          !strcmp(cl->key, "--hash-password") ||
-          !strcmp(cl->key, "-h") || !strcmp(cl->key, "--help")) {
-        if (quiet < 1)
-          quiet = 1;
-      }
-    }
+    if (cmdline)
+      quiet = cmdline->quiet_level;
     parsed_cmdline_free(cmdline);
   }
 
  /* give it somewhere to log to initially */
   switch (quiet) {
     case 2:
-      /* no initial logging */
+      /* --quiet: no initial logging */
       break;
     case 1:
+      /* --hush: log at warning or higher. */
       add_temp_log(LOG_WARN);
       break;
     default: