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/* $OpenBSD: log.c,v 1.38 2007/02/22 06:42:09 otto Exp $ */
/*
* Copyright (c) 2006 Joris Vink <joris@openbsd.org>
* Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <errno.h>
#include <string.h>
#include "cvs.h"
extern char *__progname;
static int send_m = 1;
/*
* cvs_log()
*
* Log the format-string message
* The <fmt> argument should not have a terminating newline, as this is taken
* care of by the logging facility.
*/
void
cvs_log(u_int level, const char *fmt, ...)
{
va_list vap;
va_start(vap, fmt);
cvs_vlog(level, fmt, vap);
va_end(vap);
}
/*
* cvs_vlog()
*
* The <fmt> argument should not have a terminating newline, as this is taken
* care of by the logging facility.
*/
void
cvs_vlog(u_int level, const char *fmt, va_list vap)
{
int ecp;
char prefix[64], buf[1024], ebuf[255];
FILE *out;
char *cmdname;
struct cvs_cmd *cmdp;
if (cvs_trace != 1 && level == LP_TRACE)
return;
if (level == LP_ERRNO)
ecp = errno;
else
ecp = 0;
/* always use the command name in error messages, not aliases */
if (cvs_command == NULL)
cmdname = " ";
else {
cmdp = cvs_findcmd(cvs_command);
cmdname = cmdp->cmd_name;
}
/* The cvs program appends the command name to the program name */
if (level == LP_TRACE) {
strlcpy(prefix, " -> ", sizeof(prefix));
if (cvs_server_active)
prefix[0] = 'S';
else
prefix[0] = 'C';
} else if (cvs_command != NULL) {
if (level == LP_ABORT)
(void)xsnprintf(prefix, sizeof(prefix),
"%s [%s aborted]", __progname, cmdname);
else
(void)xsnprintf(prefix, sizeof(prefix), "%s %s",
__progname, cmdname);
} else /* just use the standard strlcpy */
strlcpy(prefix, __progname, sizeof(prefix));
vsnprintf(buf, sizeof(buf), fmt, vap);
if (level == LP_ERRNO) {
(void)xsnprintf(ebuf, sizeof(ebuf), ": %s", strerror(errno));
strlcat(buf, ebuf, sizeof(buf));
}
if (level == LP_NOTICE)
out = stdout;
else
out = stderr;
if (cvs_server_active) {
if (out == stdout)
putc('M', out);
else {
out = stdout;
putc('E', out);
}
putc(' ', out);
}
fputs(prefix, out);
if (level != LP_TRACE)
fputs(": ", out);
fputs(buf, out);
fputc('\n', out);
/* preserve it just in case we changed it? */
if (level == LP_ERRNO)
errno = ecp;
}
/*
* cvs_printf()
*
* Wrapper function around printf() that prepends a 'M' command when
* the program is acting as server.
*/
int
cvs_printf(const char *fmt, ...)
{
int ret;
char *nstr, *dp, *sp;
va_list vap;
va_start(vap, fmt);
if (cvs_server_active) {
ret = vasprintf(&nstr, fmt, vap);
if (ret == -1)
fatal("cvs_printf: %s", strerror(errno));
for (dp = nstr; *dp != '\0';) {
sp = strchr(dp, '\n');
if (sp == NULL)
for (sp = dp; *sp != '\0'; sp++)
;
if (send_m) {
send_m = 0;
putc('M', stdout);
putc(' ', stdout);
}
fwrite(dp, sizeof(char), (size_t)(sp - dp), stdout);
if (*sp != '\n')
break;
putc('\n', stdout);
send_m = 1;
dp = sp + 1;
}
xfree(nstr);
} else
ret = vprintf(fmt, vap);
va_end(vap);
return (ret);
}
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