- dtucker@cvs.openbsd.org 2012/09/06 04:37:39

     [clientloop.c log.c ssh.1 log.h]
     Add ~v and ~V escape sequences to raise and lower the logging level
     respectively. Man page help from jmc, ok deraadt jmc

1 files changed, 29 insertions, 1 deletions

diff --git a/clientloop.c b/clientloop.c
index 65664cbcd..0e5c45a9d 100644
--- a/clientloop.c
+++ b/clientloop.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: clientloop.c,v 1.241 2012/08/17 00:45:45 dtucker Exp $ */
+/* $OpenBSD: clientloop.c,v 1.242 2012/09/06 04:37:38 dtucker Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -1099,6 +1099,31 @@ process_escapes(Channel *c, Buffer *bin, Buffer *bout, Buffer *berr,
                                 }
                                 continue;
 
+                        case 'V':
+                                /* FALLTHROUGH */
+                        case 'v':
+                                if (c && c->ctl_chan != -1)
+                                        goto noescape;
+                                if (!log_is_on_stderr()) {
+                                        snprintf(string, sizeof string,
+                                            "%c%c [Logging to syslog]\r\n",
+                                             escape_char, ch);
+                                        buffer_append(berr, string,
+                                            strlen(string));
+                                        continue;
+                                }
+                                if (ch == 'V' && options.log_level >
+                                    SYSLOG_LEVEL_QUIET)
+                                        log_change_level(--options.log_level);
+                                if (ch == 'v' && options.log_level <
+                                    SYSLOG_LEVEL_DEBUG3)
+                                        log_change_level(++options.log_level);
+                                snprintf(string, sizeof string,
+                                    "%c%c [LogLevel %s]\r\n", escape_char, ch,
+                                    log_level_name(options.log_level));
+                                buffer_append(berr, string, strlen(string));
+                                continue;
+
                         case '&':
                                 if (c && c->ctl_chan != -1)
                                         goto noescape;
@@ -1175,6 +1200,8 @@ Supported escape sequences:\r\n\
   %cB  - send a BREAK to the remote system\r\n\
   %cC  - open a command line\r\n\
   %cR  - Request rekey (SSH protocol 2 only)\r\n\
+  %cV  - Increase verbosity (LogLevel)\r\n\
+  %cv  - Decrease verbosity (LogLevel)\r\n\
   %c^Z - suspend ssh\r\n\
   %c#  - list forwarded connections\r\n\
   %c&  - background ssh (when waiting for connections to terminate)\r\n\
@@ -1186,6 +1213,7 @@ Supported escape sequences:\r\n\
                                             escape_char, escape_char,
                                             escape_char, escape_char,
                                             escape_char, escape_char,
+                                            escape_char, escape_char,
                                             escape_char);
                                 }
                                 buffer_append(berr, string, strlen(string));