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139 lines
2.7 KiB
C
139 lines
2.7 KiB
C
/*
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log-client.c
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Author: Tatu Ylonen <ylo@cs.hut.fi>
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Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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All rights reserved
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Created: Mon Mar 20 21:13:40 1995 ylo
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Client-side versions of debug(), log(), etc. These print to stderr.
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*/
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#include "includes.h"
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RCSID("$Id: log-client.c,v 1.1 1999/10/27 03:42:44 damien Exp $");
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#include "xmalloc.h"
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#include "ssh.h"
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static int log_debug = 0;
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static int log_quiet = 0;
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void log_init(char *av0, int on_stderr, int debug, int quiet,
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SyslogFacility facility)
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{
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log_debug = debug;
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log_quiet = quiet;
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}
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void log(const char *fmt, ...)
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{
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va_list args;
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if (log_quiet)
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return;
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va_start(args, fmt);
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vfprintf(stderr, fmt, args);
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fprintf(stderr, "\r\n");
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va_end(args);
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}
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void debug(const char *fmt, ...)
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{
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va_list args;
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if (log_quiet || !log_debug)
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return;
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va_start(args, fmt);
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fprintf(stderr, "debug: ");
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vfprintf(stderr, fmt, args);
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fprintf(stderr, "\r\n");
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va_end(args);
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}
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void error(const char *fmt, ...)
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{
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va_list args;
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if (log_quiet)
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return;
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va_start(args, fmt);
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vfprintf(stderr, fmt, args);
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fprintf(stderr, "\r\n");
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va_end(args);
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}
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struct fatal_cleanup
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{
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struct fatal_cleanup *next;
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void (*proc)(void *);
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void *context;
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};
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static struct fatal_cleanup *fatal_cleanups = NULL;
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/* Registers a cleanup function to be called by fatal() before exiting. */
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void fatal_add_cleanup(void (*proc)(void *), void *context)
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{
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struct fatal_cleanup *cu;
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cu = xmalloc(sizeof(*cu));
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cu->proc = proc;
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cu->context = context;
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cu->next = fatal_cleanups;
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fatal_cleanups = cu;
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}
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/* Removes a cleanup frunction to be called at fatal(). */
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void fatal_remove_cleanup(void (*proc)(void *context), void *context)
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{
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struct fatal_cleanup **cup, *cu;
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for (cup = &fatal_cleanups; *cup; cup = &cu->next)
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{
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cu = *cup;
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if (cu->proc == proc && cu->context == context)
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{
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*cup = cu->next;
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xfree(cu);
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return;
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}
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}
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fatal("fatal_remove_cleanup: no such cleanup function: 0x%lx 0x%lx\n",
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(unsigned long)proc, (unsigned long)context);
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}
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/* Function to display an error message and exit. This is in this file because
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this needs to restore terminal modes before exiting. See log-client.c
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for other related functions. */
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void fatal(const char *fmt, ...)
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{
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va_list args;
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struct fatal_cleanup *cu, *next_cu;
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static int fatal_called = 0;
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if (!fatal_called)
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{
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fatal_called = 1;
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/* Call cleanup functions. */
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for (cu = fatal_cleanups; cu; cu = next_cu)
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{
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next_cu = cu->next;
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(*cu->proc)(cu->context);
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}
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}
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va_start(args, fmt);
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vfprintf(stderr, fmt, args);
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fprintf(stderr, "\r\n");
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va_end(args);
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exit(255);
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}
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/* fatal() is in ssh.c so that it can properly reset terminal modes. */
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