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16d400b636
At least with Cygwin, and consequently with Msys, a macro 'initsetproctitle' exists leading to builds failing without this change if SETPROCTITLE is defined. This measure simplifies source code and Makefile allowing setproctitle functionality also for Cygwin and Msys builds, although it's of limited use there.
167 lines
4.6 KiB
C
167 lines
4.6 KiB
C
/* Based on conf.c from UCB sendmail 8.8.8 */
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/*
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* Copyright 2003 Damien Miller
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* Copyright (c) 1983, 1995-1997 Eric P. Allman
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/ioctl.h>
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#include <sys/param.h>
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#include <stdarg.h>
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#include "proxytunnel.h"
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#ifndef HAVE_SETPROCTITLE
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#define SPT_NONE 0 /* don't use it at all */
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#define SPT_PSTAT 1 /* use pstat(PSTAT_SETCMD, ...) */
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#define SPT_REUSEARGV 2 /* cover argv with title information */
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#include <unistd.h>
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#ifdef HAVE_SYS_PSTAT_H
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#include <sys/pstat.h>
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#define SPT_TYPE SPT_PSTAT
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#endif
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#ifndef SPT_TYPE
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# define SPT_TYPE SPT_NONE
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#endif
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#ifndef SPT_PADCHAR
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# define SPT_PADCHAR '\0'
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#endif
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#if SPT_TYPE == SPT_REUSEARGV
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static char *argv_start = NULL;
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static size_t argv_env_len = 0;
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#endif
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#endif /* HAVE_SETPROCTITLE */
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void pt_initsetproctitle(int argc, char *argv[]) {
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#if defined(SPT_TYPE) && SPT_TYPE == SPT_REUSEARGV
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extern char **environ;
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char *lastargv = NULL;
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char **envp = environ;
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int i;
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/*
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* NB: This assumes that argv has already been copied out of the
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* way. This is true for sshd, but may not be true for other
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* programs. Beware.
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*/
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if (argc == 0 || argv[0] == NULL)
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return;
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/* Fail if we can't allocate room for the new environment */
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for (i = 0; envp[i] != NULL; i++)
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;
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if ((environ = malloc(sizeof(*environ) * (i + 1))) == NULL) {
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environ = envp; /* put it back */
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return;
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}
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/*
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* Find the last argv string or environment variable within
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* our process memory area.
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*/
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for (i = 0; i < argc; i++) {
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if (lastargv == NULL || lastargv + 1 == argv[i])
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lastargv = argv[i] + strlen(argv[i]);
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}
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for (i = 0; envp[i] != NULL; i++) {
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if (lastargv + 1 == envp[i])
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lastargv = envp[i] + strlen(envp[i]);
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}
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argv[1] = NULL;
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argv_start = argv[0];
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argv_env_len = lastargv - argv[0] - 1;
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/*
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* Copy environment
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* XXX - will truncate env on strdup fail
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*/
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for (i = 0; envp[i] != NULL; i++)
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environ[i] = strdup(envp[i]);
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environ[i] = NULL;
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#endif /* SPT_REUSEARGV */
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}
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#ifndef HAVE_SETPROCTITLE
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void setproctitle(const char *fmt, ...) {
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#if SPT_TYPE != SPT_NONE
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va_list ap;
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char buf[1024];
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size_t len;
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extern char *__progname;
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#if SPT_TYPE == SPT_PSTAT
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union pstun pst;
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#endif
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#if SPT_TYPE == SPT_REUSEARGV
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if (argv_env_len <= 0)
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return;
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#endif
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if( args_info.proctitle_given ) {
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strlcpy(buf, args_info.proctitle_arg, sizeof(buf));
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} else {
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strlcpy(buf, __progname, sizeof(buf));
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strlcat(buf, ": ", sizeof(buf));
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}
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va_start(ap, fmt);
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if (fmt != NULL) {
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len = strlen(buf);
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if (len < sizeof(buf))
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vsnprintf(buf + len, sizeof(buf) - len , fmt, ap);
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}
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va_end(ap);
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#if SPT_TYPE == SPT_PSTAT
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pst.pst_command = buf;
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pstat(PSTAT_SETCMD, pst, strlen(buf), 0, 0);
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#elif SPT_TYPE == SPT_REUSEARGV
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// message("setproctitle: copy \"%s\" into len %d", buf, argv_env_len);
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len = strlcpy(argv_start, buf, argv_env_len);
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for(; len < argv_env_len; len++)
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argv_start[len] = SPT_PADCHAR;
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#endif
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#endif /* SPT_NONE */
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}
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#endif /* HAVE_SETPROCTITLE */
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// vim:noexpandtab:ts=4
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