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Diffstat (limited to 'contrib/opie/popen.c')
| -rw-r--r-- | contrib/opie/popen.c | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/contrib/opie/popen.c b/contrib/opie/popen.c deleted file mode 100644 index 3cc307883cae..000000000000 --- a/contrib/opie/popen.c +++ /dev/null @@ -1,210 +0,0 @@ -/* popen.c: A "safe" pipe open routine. - -%%% portions-copyright-cmetz-96 -Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights -Reserved. The Inner Net License Version 2 applies to these portions of -the software. -You should have received a copy of the license with this software. If -you didn't get a copy, you may request one from <license@inner.net>. - -Portions of this software are Copyright 1995 by Randall Atkinson and Dan -McDonald, All Rights Reserved. All Rights under this copyright are assigned -to the U.S. Naval Research Laboratory (NRL). The NRL Copyright Notice and -License Agreement applies to this software. - - History: - - Modified by cmetz for OPIE 2.31. Merged in some 4.4BSD-Lite fixes. - Modified by cmetz for OPIE 2.2. Use FUNCTION declaration et al. - Removed useless string. ifdef around some headers. - Modified at NRL for OPIE 2.1. Optimized for only one pipe at a time. - Added minimal version of sigprocmask(). Moved some pid_t - dancing to the config headers. - Modified at NRL for OPIE 2.0. - Originally from BSD. - -*/ -/* - * Copyright (c) 1988, 1993, 1994 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software written by Ken Arnold and - * published in UNIX Review, Vol. 6, No. 8. - * - * 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. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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 "opie_cfg.h" - -#include <sys/types.h> -#include <sys/wait.h> -#if HAVE_SIGNAL_H -#include <signal.h> -#endif /* HAVE_SIGNAL_H */ -#if HAVE_SYS_SIGNAL_H -#include <sys/signal.h> -#endif /* HAVE_SYS_SIGNAL_H */ -#if HAVE_UNISTD_H -#include <unistd.h> -#endif /* HAVE_UNISTD_H */ -#include <stdio.h> -#if HAVE_STDLIB_H -#include <stdlib.h> -#endif /* HAVE_STDLIB_H */ -#if HAVE_STRING_H -#include <string.h> -#endif /* HAVE_STRING_H */ - -#include "opie.h" - -char **ftpglob __P((register char *)); -char **copyblk __P((char **)); -VOIDRET blkfree __P((char **)); - -/* - * Special version of popen which avoids call to shell. This ensures noone - * may create a pipe to a hidden program as a side effect of a list or dir - * command. - */ -static pid_t child_pid = -1; -static int pipe_fd; - -extern char **environ; - -FILE *ftpd_popen FUNCTION((program, type), char *program AND char *type) -{ - char *cp; - FILE *iop; - int argc, gargc, pdes[2]; - char **pop, *argv[100], *gargv[1000], *vv[2]; - - if ((*type != 'r' && *type != 'w') || type[1]) - return (NULL); - - if (pipe(pdes) < 0) - return (NULL); - - /* break up string into pieces */ - for (argc = 0, cp = program;; cp = NULL) - if (!(argv[argc++] = strtok(cp, " \t\n"))) - break; - - /* glob each piece */ - gargv[0] = argv[0]; - for (gargc = argc = 1; argv[argc]; argc++) { - if (!(pop = (char **) ftpglob(argv[argc]))) { - /* globbing failed */ - vv[0] = argv[argc]; - vv[1] = NULL; - pop = (char **) copyblk(vv); - } - argv[argc] = (char *) pop; /* save to free later */ - while (*pop && gargc < 1000) - gargv[gargc++] = *pop++; - } - gargv[gargc] = NULL; - - iop = NULL; - switch (child_pid = fork()) { - case -1: /* error */ - close(pdes[0]); - close(pdes[1]); - goto pfree; - /* NOTREACHED */ - case 0: /* child */ - if (*type == 'r') { - if (pdes[1] != 1) { - dup2(pdes[1], 1); - dup2(pdes[1], 2); /* stderr, too! */ - close(pdes[1]); - } - close(pdes[0]); - } else { - if (pdes[0] != 0) { - dup2(pdes[0], 0); - close(pdes[0]); - } - close(pdes[1]); - } - environ = NULL; - execv(gargv[0], gargv); - _exit(1); - } - - /* parent; assume fdopen can't fail... */ - if (*type == 'r') { - iop = fdopen(pipe_fd = pdes[0], type); - close(pdes[1]); - } else { - iop = fdopen(pipe_fd = pdes[1], type); - close(pdes[0]); - } - -pfree: for (argc = 1; argv[argc] != NULL; argc++) { - blkfree((char **) argv[argc]); - free((char *) argv[argc]); - } - return (iop); -} - -int ftpd_pclose FUNCTION((iop), FILE *iop) -{ - int status; - pid_t pid; - sigset_t omask, mask; - - sigemptyset(&mask); - sigaddset(&mask, SIGINT); - sigaddset(&mask, SIGQUIT); - sigaddset(&mask, SIGHUP); - - /* pclose returns -1 if stream is not associated with a `popened' command, - or, if already `pclosed'. */ - if ((child_pid < 0) || (fileno(iop) != pipe_fd)) - return (-1); - - fclose(iop); - sigprocmask(SIG_BLOCK, &mask, &omask); - - while ((pid = wait(&status)) != child_pid && (pid != -1)); - sigprocmask(SIG_SETMASK, &omask, NULL); - - child_pid = -1; - pipe_fd = -1; - -#if defined(WEXITSTATUS) && defined(WIFEXITED) - if ((pid > 0) && WIFEXITED(status)) - return WEXITSTATUS(status); - - return -1; -#else /* defined(WEXITSTATUS) && defined(WIFEXITED) */ - return (pid == -1 ? -1 : status.w_status); -#endif /* defined(WEXITSTATUS) && defined(WIFEXITED) */ -} |