mirror of
https://github.com/proxytunnel/proxytunnel.git
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7c50df4e93
git-svn-id: https://proxytunnel.svn.sourceforge.net/svnroot/proxytunnel/trunk/proxytunnel@96 bc163920-b10d-0410-b2c5-a5491ca2ceef
273 lines
6.8 KiB
C
273 lines
6.8 KiB
C
/*
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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#ifdef SETPROCTITLE
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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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#define VA_LOCAL_DECL va_list ap;
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#define VA_START(f) va_start(ap, f)
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#define VA_END va_end(ap)
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/* return number of bytes left in a buffer */
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#define SPACELEFT(buf, ptr) (sizeof buf - ((ptr) - buf))
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/*
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** SETPROCTITLE -- set process title for ps
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**
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** Parameters:
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** fmt -- a printf style format string.
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** a, b, c -- possible parameters to fmt.
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**
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** Returns:
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** none.
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**
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** Side Effects:
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** Clobbers argv of our main procedure so ps(1) will
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** display the title.
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*/
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#define SPT_NONE 0 /* don't use it at all */
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#define SPT_REUSEARGV 1 /* cover argv with title information */
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#define SPT_BUILTIN 2 /* use libc builtin */
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#define SPT_PSTAT 3 /* use pstat(PSTAT_SETCMD, ...) */
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#define SPT_PSSTRINGS 4 /* use PS_STRINGS->... */
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#define SPT_SYSMIPS 5 /* use sysmips() supported by NEWS-OS 6 */
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#define SPT_SCO 6 /* write kernel u. area */
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#define SPT_CHANGEARGV 7 /* write our own strings into argv[] */
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# define MAXLINE 2048 /* max line length */
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#ifndef SPT_TYPE
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# define SPT_TYPE SPT_REUSEARGV
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#endif
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#if SPT_TYPE != SPT_NONE && SPT_TYPE != SPT_BUILTIN
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# if SPT_TYPE == SPT_PSTAT
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# include <sys/pstat.h>
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# endif
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# if SPT_TYPE == SPT_PSSTRINGS
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# include <machine/vmparam.h>
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# include <sys/exec.h>
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# ifndef PS_STRINGS /* hmmmm.... apparently not available after all */
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# undef SPT_TYPE
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# define SPT_TYPE SPT_REUSEARGV
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# else
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# ifndef NKPDE /* FreeBSD 2.0 */
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# define NKPDE 63
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typedef unsigned int *pt_entry_t;
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# endif
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# endif
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# endif
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# if SPT_TYPE == SPT_PSSTRINGS || SPT_TYPE == SPT_CHANGEARGV
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# define SETPROC_STATIC static
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# else
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# define SETPROC_STATIC
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# endif
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# if SPT_TYPE == SPT_SYSMIPS
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# include <sys/sysmips.h>
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# include <sys/sysnews.h>
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# endif
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# if SPT_TYPE == SPT_SCO
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# include <sys/immu.h>
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# include <sys/dir.h>
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# include <sys/user.h>
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# include <sys/fs/s5param.h>
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# if PSARGSZ > MAXLINE
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# define SPT_BUFSIZE PSARGSZ
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# endif
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# endif
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# ifndef SPT_PADCHAR
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# define SPT_PADCHAR ' '
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# endif
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# ifndef SPT_BUFSIZE
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# define SPT_BUFSIZE MAXLINE
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# endif
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#endif /* SPT_TYPE != SPT_NONE && SPT_TYPE != SPT_BUILTIN */
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/*
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** Pointers for setproctitle.
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** This allows "ps" listings to give more useful information.
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*/
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char **Argv = NULL; /* pointer to argument vector */
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char *LastArgv = NULL; /* end of argv */
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int
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initsetproctitle(argc, argv, envp)
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int argc;
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char **argv;
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char **envp;
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{
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register int i, envpsize = 0;
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extern char **environ;
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/*
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** Move the environment so setproctitle can use the space at
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** the top of memory.
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*/
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for (i = 0; envp[i] != NULL; i++)
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envpsize += strlen(envp[i]) + 1;
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environ = (char **) malloc(sizeof (char *) * (i + 1));
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if (environ == NULL)
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return -1;
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/* ---> removed some macro calls */
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for (i = 0; envp[i] != NULL; i++) {
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size_t len = strlen(envp[i]) + 1;
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char *p = malloc(len);
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if (p == NULL)
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return -1;
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environ[i] = strncpy(p, envp[i], len);
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p[len - 1] = (int)NULL;
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}
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environ[i] = NULL;
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/*
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** Save start and extent of argv for setproctitle.
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*/
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Argv = argv;
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/*
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** Find the last environment variable within sendmail's
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** process memory area.
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*/
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while (i > 0 && (envp[i - 1] < argv[0] ||
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envp[i - 1] > (argv[argc - 1] +
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strlen(argv[argc - 1]) + 1 + envpsize)))
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i--;
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if (i > 0)
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LastArgv = envp[i - 1] + strlen(envp[i - 1]);
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else
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LastArgv = argv[argc - 1] + strlen(argv[argc - 1]);
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return 0;
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}
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#if SPT_TYPE != SPT_BUILTIN
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/*VARARGS1*/
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void
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setproctitle(const char *fmt, ...)
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{
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# if SPT_TYPE != SPT_NONE
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register char *p;
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register int i;
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SETPROC_STATIC char buf[SPT_BUFSIZE];
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VA_LOCAL_DECL
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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_SCO
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off_t seek_off;
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static int kmem = -1;
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static int kmempid = -1;
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struct user u;
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# endif
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p = buf;
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/* print the argument string */
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VA_START(fmt);
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vsnprintf(p, SPACELEFT(buf, p), fmt, ap);
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VA_END;
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i = strlen(buf);
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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, i, 0, 0);
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# endif
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# if SPT_TYPE == SPT_PSSTRINGS
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PS_STRINGS->ps_nargvstr = 1;
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PS_STRINGS->ps_argvstr = buf;
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# endif
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# if SPT_TYPE == SPT_SYSMIPS
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sysmips(SONY_SYSNEWS, NEWS_SETPSARGS, buf);
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# endif
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# if SPT_TYPE == SPT_SCO
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if (kmem < 0 || kmempid != getpid())
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{
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if (kmem >= 0)
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close(kmem);
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kmem = open(_PATH_KMEM, O_RDWR, 0);
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if (kmem < 0)
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return;
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(void) fcntl(kmem, F_SETFD, 1);
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kmempid = getpid();
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}
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buf[PSARGSZ - 1] = '\0';
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seek_off = UVUBLK + (off_t) u.u_psargs - (off_t) &u;
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if (lseek(kmem, (off_t) seek_off, SEEK_SET) == seek_off)
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(void) write(kmem, buf, PSARGSZ);
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# endif
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# if SPT_TYPE == SPT_REUSEARGV
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if (i > LastArgv - Argv[0] - 2)
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{
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i = LastArgv - Argv[0] - 2;
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buf[i] = '\0';
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}
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(void) strcpy(Argv[0], buf);
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p = &Argv[0][i];
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while (p < LastArgv)
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*p++ = SPT_PADCHAR;
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Argv[1] = NULL;
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# endif
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# if SPT_TYPE == SPT_CHANGEARGV
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Argv[0] = buf;
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Argv[1] = 0;
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# endif
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# endif /* SPT_TYPE != SPT_NONE */
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}
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#endif /* SPT_TYPE != SPT_BUILTIN */
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#endif /* SETPROCTITLE */
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