X-Git-Url: http://sjero.net/git/?a=blobdiff_plain;f=src%2Flog.c;h=5de6da7d280597dc072db08c534f1f118a2be166;hb=4d7c5e087b2bc82c9f503dff003916d1047903ce;hp=d1793d430301434d56c3860c036a6f9beafcb4c7;hpb=69e45d2c7c380a8ef900dd06f06afdf5d3b2a906;p=wget
diff --git a/src/log.c b/src/log.c
index d1793d43..5de6da7d 100644
--- a/src/log.c
+++ b/src/log.c
@@ -1,11 +1,11 @@
/* Messages logging.
- Copyright (C) 2005 Free Software Foundation, Inc.
+ Copyright (C) 1998-2006 Free Software Foundation, Inc.
This file is part of GNU Wget.
GNU Wget is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
+the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
GNU Wget is distributed in the hope that it will be useful,
@@ -14,8 +14,7 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with Wget; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+along with Wget. If not, see .
In addition, as a special exception, the Free Software Foundation
gives permission to link the code of its release of Wget with the
@@ -30,17 +29,9 @@ so, delete this exception statement from your version. */
#include
#include
-#ifdef HAVE_STRING_H
-# include
-#else
-# include
-#endif
+#include
#include
-#ifdef WGET_USE_STDARG
-# include
-#else
-# include
-#endif
+#include
#ifdef HAVE_UNISTD_H
# include
#endif
@@ -51,10 +42,6 @@ so, delete this exception statement from your version. */
#include "utils.h"
#include "log.h"
-#ifndef errno
-extern int errno;
-#endif
-
/* This file impplement support for "logging". Logging means printing
output, plus several additional features:
@@ -80,18 +67,18 @@ extern int errno;
logging is inhibited, logfp is set back to NULL. */
static FILE *logfp;
-/* If non-zero, it means logging is inhibited, i.e. nothing is printed
- or stored. */
-static int inhibit_logging;
+/* If true, it means logging is inhibited, i.e. nothing is printed or
+ stored. */
+static bool inhibit_logging;
/* Whether the last output lines are stored for use as context. */
-static int save_context_p;
+static bool save_context_p;
/* Whether the log is flushed after each command. */
-static int flush_log_p = 1;
+static bool flush_log_p = true;
/* Whether any output has been received while flush_log_p was 0. */
-static int needs_flushing;
+static bool needs_flushing;
/* In the event of a hang-up, and if its output was on a TTY, Wget
redirects its output to `wget-log'.
@@ -135,9 +122,9 @@ static int log_line_current = -1;
finish with \n. This is an important piece of information because
the code is always careful to append data to trailing lines, rather
than create new ones. */
-static int trailing_line;
+static bool trailing_line;
-static void check_redirect_output PARAMS ((void));
+static void check_redirect_output (void);
#define ROT_ADVANCE(num) do { \
if (++num >= SAVED_LOG_LINES) \
@@ -220,7 +207,7 @@ saved_append_1 (const char *start, const char *end)
{
/* Allocate memory and concatenate the old and the new
contents. */
- ln->malloced_line = (char *)xmalloc (old_len + len + 1);
+ ln->malloced_line = xmalloc (old_len + len + 1);
memcpy (ln->malloced_line, ln->static_line,
old_len);
memcpy (ln->malloced_line + old_len, start, len);
@@ -325,7 +312,7 @@ logputs (enum log_options o, const char *s)
if (flush_log_p)
logflush ();
else
- needs_flushing = 1;
+ needs_flushing = true;
}
struct logvprintf_state {
@@ -348,7 +335,7 @@ struct logvprintf_state {
(An alternative approach would be to use va_copy, but that's not
portable.) */
-static int
+static bool
log_vprintf_internal (struct logvprintf_state *state, const char *fmt,
va_list args)
{
@@ -381,12 +368,12 @@ log_vprintf_internal (struct logvprintf_state *state, const char *fmt,
numwritten = vsnprintf (write_ptr, available_size, fmt, args);
/* vsnprintf() will not step over the limit given by available_size.
- If it fails, it will return either -1 (POSIX?) or the number of
- characters that *would have* been written, if there had been
- enough room (C99). In the former case, we double the
- available_size and malloc to get a larger buffer, and try again.
- In the latter case, we use the returned information to build a
- buffer of the correct size. */
+ If it fails, it returns either -1 (older implementations) or the
+ number of characters (not counting the terminating \0) that
+ *would have* been written if there had been enough room (C99).
+ In the former case, we double available_size and malloc to get a
+ larger buffer, and try again. In the latter case, we use the
+ returned information to build a buffer of the correct size. */
if (numwritten == -1)
{
@@ -395,7 +382,7 @@ log_vprintf_internal (struct logvprintf_state *state, const char *fmt,
int newsize = available_size << 1;
state->bigmsg = xrealloc (state->bigmsg, newsize);
state->allocated = newsize;
- return 0;
+ return false;
}
else if (numwritten >= available_size)
{
@@ -404,7 +391,7 @@ log_vprintf_internal (struct logvprintf_state *state, const char *fmt,
int newsize = numwritten + 1;
state->bigmsg = xrealloc (state->bigmsg, newsize);
state->allocated = newsize;
- return 0;
+ return false;
}
/* Writing succeeded. */
@@ -417,9 +404,9 @@ log_vprintf_internal (struct logvprintf_state *state, const char *fmt,
if (flush_log_p)
logflush ();
else
- needs_flushing = 1;
+ needs_flushing = true;
- return 1;
+ return true;
}
/* Flush LOGFP. Useful while flushing is disabled. */
@@ -429,20 +416,20 @@ logflush (void)
FILE *fp = get_log_fp ();
if (fp)
fflush (fp);
- needs_flushing = 0;
+ needs_flushing = false;
}
/* Enable or disable log flushing. */
void
-log_set_flush (int flush)
+log_set_flush (bool flush)
{
if (flush == flush_log_p)
return;
- if (flush == 0)
+ if (flush == false)
{
/* Disable flushing by setting flush_log_p to 0. */
- flush_log_p = 0;
+ flush_log_p = false;
}
else
{
@@ -450,7 +437,7 @@ log_set_flush (int flush)
flush the log now. */
if (needs_flushing)
logflush ();
- flush_log_p = 1;
+ flush_log_p = true;
}
}
@@ -458,24 +445,14 @@ log_set_flush (int flush)
status of storing, with which this function can be called again to
reestablish storing. */
-int
-log_set_save_context (int savep)
+bool
+log_set_save_context (bool savep)
{
- int old = save_context_p;
+ bool old = save_context_p;
save_context_p = savep;
return old;
}
-/* Handle difference in va_start between pre-ANSI and ANSI C. Note
- that we always use `...' in function definitions and let ansi2knr
- convert it for us. */
-
-#ifdef WGET_USE_STDARG
-# define VA_START(args, arg1) va_start (args, arg1)
-#else
-# define VA_START(args, ignored) va_start (args)
-#endif
-
/* Print a message to the screen or to the log. The first argument
defines the verbosity of the message, and the rest are as in
printf(3). */
@@ -485,7 +462,7 @@ logprintf (enum log_options o, const char *fmt, ...)
{
va_list args;
struct logvprintf_state lpstate;
- int done;
+ bool done;
check_redirect_output ();
if (inhibit_logging)
@@ -495,7 +472,7 @@ logprintf (enum log_options o, const char *fmt, ...)
xzero (lpstate);
do
{
- VA_START (args, fmt);
+ va_start (args, fmt);
done = log_vprintf_internal (&lpstate, fmt, args);
va_end (args);
}
@@ -504,7 +481,7 @@ logprintf (enum log_options o, const char *fmt, ...)
#ifdef ENABLE_DEBUG
/* The same as logprintf(), but does anything only if opt.debug is
- non-zero. */
+ true. */
void
debug_logprintf (const char *fmt, ...)
{
@@ -512,7 +489,7 @@ debug_logprintf (const char *fmt, ...)
{
va_list args;
struct logvprintf_state lpstate;
- int done;
+ bool done;
check_redirect_output ();
if (inhibit_logging)
@@ -521,7 +498,7 @@ debug_logprintf (const char *fmt, ...)
xzero (lpstate);
do
{
- VA_START (args, fmt);
+ va_start (args, fmt);
done = log_vprintf_internal (&lpstate, fmt, args);
va_end (args);
}
@@ -533,7 +510,7 @@ debug_logprintf (const char *fmt, ...)
/* Open FILE and set up a logging stream. If FILE cannot be opened,
exit with status of 1. */
void
-log_init (const char *file, int appendp)
+log_init (const char *file, bool appendp)
{
if (file)
{
@@ -564,7 +541,7 @@ log_init (const char *file, int appendp)
the most recent several messages ("context") and dump
them to a log file in case SIGHUP or SIGUSR1 is received
(or Ctrl+Break is pressed under Windows). */
- save_context_p = 1;
+ save_context_p = true;
}
}
}
@@ -579,13 +556,13 @@ log_close (void)
if (logfp)
fclose (logfp);
logfp = NULL;
- inhibit_logging = 1;
- save_context_p = 0;
+ inhibit_logging = true;
+ save_context_p = false;
for (i = 0; i < SAVED_LOG_LINES; i++)
free_log_line (i);
log_line_current = -1;
- trailing_line = 0;
+ trailing_line = false;
}
/* Dump saved lines to logfp. */
@@ -744,6 +721,18 @@ escnonprint_internal (const char *str, char escape, int base)
characters in STR, STR is returned. See copy_and_escape for more
information on which characters are considered non-printable.
+ DON'T call this function on translated strings because escaping
+ will break them. Don't call it on literal strings from the source,
+ which are by definition trusted. If newlines are allowed in the
+ string, escape and print it line by line because escaping the whole
+ string will convert newlines to \012. (This is so that expectedly
+ single-line messages cannot use embedded newlines to mimic Wget's
+ output and deceive the user.)
+
+ escnonprint doesn't quote its escape character because it is notf
+ meant as a general and reversible quoting mechanism, but as a quick
+ way to defang binary junk sent by malicious or buggy servers.
+
NOTE: since this function can return a pointer to static data, be
careful to copy its result before calling it again. However, to be
more useful with printf, it maintains an internal ring of static
@@ -759,11 +748,9 @@ escnonprint (const char *str)
/* Return a pointer to a static copy of STR with the non-printable
characters escaped as %XX. If there are no non-printable
- characters in STR, STR is returned. See copy_and_escape for more
- information on which characters are considered non-printable.
+ characters in STR, STR is returned.
- This function returns a pointer to static data which will be
- overwritten by subsequent calls -- see escnonprint for details. */
+ See escnonprint for usage details. */
const char *
escnonprint_uri (const char *str)
@@ -781,7 +768,7 @@ log_cleanup (void)
/* When SIGHUP or SIGUSR1 are received, the output is redirected
elsewhere. Such redirection is only allowed once. */
-enum { RR_NONE, RR_REQUESTED, RR_DONE } redirect_request = RR_NONE;
+static enum { RR_NONE, RR_REQUESTED, RR_DONE } redirect_request = RR_NONE;
static const char *redirect_request_signal_name;
/* Redirect output to `wget-log'. */
@@ -790,7 +777,7 @@ static void
redirect_output (void)
{
char *logfile;
- logfp = unique_create (DEFAULT_LOGFILE, 0, &logfile);
+ logfp = unique_create (DEFAULT_LOGFILE, false, &logfile);
if (logfp)
{
fprintf (stderr, _("\n%s received, redirecting output to `%s'.\n"),
@@ -806,9 +793,9 @@ redirect_output (void)
fprintf (stderr, _("\n%s received.\n"), redirect_request_signal_name);
fprintf (stderr, _("%s: %s; disabling logging.\n"),
logfile, strerror (errno));
- inhibit_logging = 1;
+ inhibit_logging = true;
}
- save_context_p = 0;
+ save_context_p = false;
}
/* Check whether a signal handler requested the output to be