Initial import of KTH eBones. This has been cleaned up to only include

the "core" Kerberos functionality. The rest of the userland will get their
own changes later.

1 files changed, 224 insertions, 0 deletions

diff --git a/crypto/kerberosIV/appl/ftp/ftpd/popen.c b/crypto/kerberosIV/appl/ftp/ftpd/popen.c
new file mode 100644
index 0000000..58c4985
--- /dev/null
+++ b/crypto/kerberosIV/appl/ftp/ftpd/popen.c
@@ -0,0 +1,224 @@
+/*
+ * 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 1.16 1997/06/01 03:14:06 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")))
+	    strcpy(home, pwd->pw_dir);
+    snprintf(newpath, sizeof(newpath), "%s/%s", home, path);
+    if(access(newpath, X_OK))
+	strcpy(newpath, path);
+    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 */
+	for (argc = 0, cp = program;; cp = NULL) {
+		foo = 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);
+}