diff options
Diffstat (limited to 'crypto/heimdal/appl/ftp/ftpd/popen.c')
| -rw-r--r-- | crypto/heimdal/appl/ftp/ftpd/popen.c | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/crypto/heimdal/appl/ftp/ftpd/popen.c b/crypto/heimdal/appl/ftp/ftpd/popen.c deleted file mode 100644 index 5f36813a195b2..0000000000000 --- a/crypto/heimdal/appl/ftp/ftpd/popen.c +++ /dev/null @@ -1,224 +0,0 @@ -/* - * 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. - * - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -RCSID("$Id: popen.c,v 1.19 1999/09/16 20:38:45 assar Exp $"); -#endif - -#include <sys/types.h> -#ifdef TIME_WITH_SYS_TIME -#include <sys/time.h> -#include <time.h> -#elif defined(HAVE_SYS_TIME_H) -#include <sys/time.h> -#else -#include <time.h> -#endif -#ifdef HAVE_SYS_RESOURCE_H -#include <sys/resource.h> -#endif -#include <sys/wait.h> - -#include <errno.h> -#include <glob.h> -#include <signal.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -#include "extern.h" - -#include <roken.h> - -/* - * Special version of popen which avoids call to shell. This ensures - * no one may create a pipe to a hidden program as a side effect of a - * list or dir command. - */ -static int *pids; -static int fds; - -extern int dochroot; - -/* return path prepended with ~ftp if that file exists, otherwise - * return path unchanged - */ - -const char * -ftp_rooted(const char *path) -{ - static char home[MaxPathLen] = ""; - static char newpath[MaxPathLen]; - struct passwd *pwd; - - if(!home[0]) - if((pwd = k_getpwnam("ftp"))) - strlcpy(home, pwd->pw_dir, sizeof(home)); - snprintf(newpath, sizeof(newpath), "%s/%s", home, path); - if(access(newpath, X_OK)) - strlcpy(newpath, path, sizeof(newpath)); - return newpath; -} - - -FILE * -ftpd_popen(char *program, char *type, int do_stderr, int no_glob) -{ - char *cp; - FILE *iop; - int argc, gargc, pdes[2], pid; - char **pop, *argv[100], *gargv[1000]; - char *foo; - - if (strcmp(type, "r") && strcmp(type, "w")) - return (NULL); - - if (!pids) { - - /* This function is ugly and should be rewritten, in - * modern unices there is no such thing as a maximum - * filedescriptor. - */ - - fds = getdtablesize(); - pids = (int*)calloc(fds, sizeof(int)); - if(!pids) - return NULL; - } - if (pipe(pdes) < 0) - return (NULL); - - /* break up string into pieces */ - foo = NULL; - for (argc = 0, cp = program;; cp = NULL) { - if (!(argv[argc++] = strtok_r(cp, " \t\n", &foo))) - break; - } - - gargv[0] = (char*)ftp_rooted(argv[0]); - /* glob each piece */ - for (gargc = argc = 1; argv[argc]; argc++) { - glob_t gl; - int flags = GLOB_BRACE|GLOB_NOCHECK|GLOB_QUOTE|GLOB_TILDE; - - memset(&gl, 0, sizeof(gl)); - if (no_glob || glob(argv[argc], flags, NULL, &gl)) - gargv[gargc++] = strdup(argv[argc]); - else - for (pop = gl.gl_pathv; *pop; pop++) - gargv[gargc++] = strdup(*pop); - globfree(&gl); - } - gargv[gargc] = NULL; - - iop = NULL; - switch(pid = fork()) { - case -1: /* error */ - close(pdes[0]); - close(pdes[1]); - goto pfree; - /* NOTREACHED */ - case 0: /* child */ - if (*type == 'r') { - if (pdes[1] != STDOUT_FILENO) { - dup2(pdes[1], STDOUT_FILENO); - close(pdes[1]); - } - if(do_stderr) - dup2(STDOUT_FILENO, STDERR_FILENO); - close(pdes[0]); - } else { - if (pdes[0] != STDIN_FILENO) { - dup2(pdes[0], STDIN_FILENO); - close(pdes[0]); - } - close(pdes[1]); - } - execv(gargv[0], gargv); - gargv[0] = argv[0]; - execv(gargv[0], gargv); - _exit(1); - } - /* parent; assume fdopen can't fail... */ - if (*type == 'r') { - iop = fdopen(pdes[0], type); - close(pdes[1]); - } else { - iop = fdopen(pdes[1], type); - close(pdes[0]); - } - pids[fileno(iop)] = pid; - -pfree: - for (argc = 1; gargv[argc] != NULL; argc++) - free(gargv[argc]); - - - return (iop); -} - -int -ftpd_pclose(FILE *iop) -{ - int fdes, status; - pid_t pid; - sigset_t sigset, osigset; - - /* - * pclose returns -1 if stream is not associated with a - * `popened' command, or, if already `pclosed'. - */ - if (pids == 0 || pids[fdes = fileno(iop)] == 0) - return (-1); - fclose(iop); - sigemptyset(&sigset); - sigaddset(&sigset, SIGINT); - sigaddset(&sigset, SIGQUIT); - sigaddset(&sigset, SIGHUP); - sigprocmask(SIG_BLOCK, &sigset, &osigset); - while ((pid = waitpid(pids[fdes], &status, 0)) < 0 && errno == EINTR) - continue; - sigprocmask(SIG_SETMASK, &osigset, NULL); - pids[fdes] = 0; - if (pid < 0) - return (pid); - if (WIFEXITED(status)) - return (WEXITSTATUS(status)); - return (1); -} |