Adding upstream version 3.4.23.upstream/3.4.23upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 389 insertions, 0 deletions

diff --git a/src/util/sys_compat.c b/src/util/sys_compat.c
new file mode 100644
index 0000000..8bf8e58
--- /dev/null
+++ b/src/util/sys_compat.c
@@ -0,0 +1,389 @@
+/*++
+/* NAME
+/*	sys_compat 3
+/* SUMMARY
+/*	compatibility routines
+/* SYNOPSIS
+/*	#include <sys_defs.h>
+/*
+/*	void	closefrom(int lowfd)
+/*	int	lowfd;
+/*
+/*	const char *strerror(err)
+/*	int	err;
+/*
+/*	int	setenv(name, value, clobber)
+/*	const char *name;
+/*	const char *value;
+/*	int	clobber;
+/*
+/*	int	unsetenv(name)
+/*	const char *name;
+/*
+/*	int	seteuid(euid)
+/*	uid_t	euid;
+/*
+/*	int	setegid(egid)
+/*	gid_t	euid;
+/*
+/*	int	mkfifo(path, mode)
+/*	char	*path;
+/*	int	mode;
+/*
+/*	int	waitpid(pid, statusp, options)
+/*	int	pid;
+/*	WAIT_STATUS_T *statusp;
+/*	int	options;
+/*
+/*	int	setsid()
+/*
+/*	void	dup2_pass_on_exec(int oldd, int newd)
+/*
+/*	char	*inet_ntop(af, src, dst, size)
+/*	int	af;
+/*	const void *src;
+/*	char	*dst;
+/*	SOCKADDR_SIZE size;
+/*
+/*	int	inet_pton(af, src, dst)
+/*	int	af;
+/*	const char *src;
+/*	void	*dst;
+/* DESCRIPTION
+/*	These routines are compiled for platforms that lack the functionality
+/*	or that have broken versions that we prefer to stay away from.
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*
+/*	Wietse Venema
+/*	Google, Inc.
+/*	111 8th Avenue
+/*	New York, NY 10011, USA
+/*--*/
+
+/* System library. */
+
+#include "sys_defs.h"
+
+ /*
+  * ANSI strerror() emulation
+  */
+#ifdef MISSING_STRERROR
+
+extern int errno;
+extern char *sys_errlist[];
+extern int sys_nerr;
+
+#include <vstring.h>
+
+/* strerror - print text corresponding to error */
+
+const char *strerror(int err)
+{
+    static VSTRING *buf;
+
+    if (err < 0 || err >= sys_nerr) {
+	if (buf == 0)
+	    buf = vstring_alloc(10);
+	vstring_sprintf(buf, "Unknown error %d", err);
+	return (vstring_str(buf));
+    } else {
+	return (sys_errlist[errno]);
+    }
+}
+
+#endif
+
+ /*
+  * setenv() emulation on top of putenv().
+  */
+#ifdef MISSING_SETENV
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+/* setenv - update or insert environment (name,value) pair */
+
+int     setenv(const char *name, const char *value, int clobber)
+{
+    char   *cp;
+
+    if (clobber == 0 && getenv(name) != 0)
+	return (0);
+    if ((cp = malloc(strlen(name) + strlen(value) + 2)) == 0)
+	return (1);
+    sprintf(cp, "%s=%s", name, value);
+    return (putenv(cp));
+}
+
+/* unsetenv - remove all instances of the name */
+
+int     unsetenv(const char *name)
+{
+    extern char **environ;
+    ssize_t name_len = strlen(name);
+    char  **src_pp;
+    char  **dst_pp;
+
+    for (dst_pp = src_pp = environ; *src_pp; src_pp++, dst_pp++) {
+	if (strncmp(*src_pp, name, name_len) == 0
+	    && *(*src_pp + name_len) == '=') {
+	    dst_pp--;
+	} else if (dst_pp != src_pp) {
+	    *dst_pp = *src_pp;
+	}
+    }
+    *dst_pp = 0;
+    return (0);
+}
+
+#endif
+
+ /*
+  * seteuid() and setegid() emulation, the HP-UX way
+  */
+#ifdef MISSING_SETEUID
+#ifdef HAVE_SETRESUID
+#include <unistd.h>
+
+int     seteuid(uid_t euid)
+{
+    return setresuid(-1, euid, -1);
+}
+
+#else
+#error MISSING_SETEUID
+#endif
+
+#endif
+
+#ifdef MISSING_SETEGID
+#ifdef HAVE_SETRESGID
+#include <unistd.h>
+
+int     setegid(gid_t egid)
+{
+    return setresgid(-1, egid, -1);
+}
+
+#else
+#error MISSING_SETEGID
+#endif
+
+#endif
+
+ /*
+  * mkfifo() emulation - requires superuser privileges
+  */
+#ifdef MISSING_MKFIFO
+
+#include <sys/stat.h>
+
+int     mkfifo(char *path, int mode)
+{
+    return mknod(path, (mode & ~_S_IFMT) | _S_IFIFO, 0);
+}
+
+#endif
+
+ /*
+  * waitpid() emulation on top of Berkeley UNIX wait4()
+  */
+#ifdef MISSING_WAITPID
+#ifdef HAS_WAIT4
+
+#include <sys/wait.h>
+#include <errno.h>
+
+int     waitpid(int pid, WAIT_STATUS_T *status, int options)
+{
+    if (pid == -1)
+	pid = 0;
+    return wait4(pid, status, options, (struct rusage *) 0);
+}
+
+#else
+#error MISSING_WAITPID
+#endif
+
+#endif
+
+ /*
+  * setsid() emulation, the Berkeley UNIX way
+  */
+#ifdef MISSING_SETSID
+
+#include <sys/ioctl.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#ifdef TIOCNOTTY
+
+#include <msg.h>
+
+int     setsid(void)
+{
+    int     p = getpid();
+    int     fd;
+
+    if (setpgrp(p, p))
+	return -1;
+
+    fd = open("/dev/tty", O_RDONLY, 0);
+    if (fd >= 0 || errno != ENXIO) {
+	if (fd < 0) {
+	    msg_warn("open /dev/tty: %m");
+	    return -1;
+	}
+	if (ioctl(fd, TIOCNOTTY, 0)) {
+	    msg_warn("ioctl TIOCNOTTY: %m");
+	    return -1;
+	}
+	close(fd);
+    }
+    return 0;
+}
+
+#else
+#error MISSING_SETSID
+#endif
+
+#endif
+
+ /*
+  * dup2_pass_on_exec() - dup2() and clear close-on-exec flag on the result
+  */
+#ifdef DUP2_DUPS_CLOSE_ON_EXEC
+
+#include "iostuff.h"
+
+int     dup2_pass_on_exec(int oldd, int newd)
+{
+    int     res;
+
+    if ((res = dup2(oldd, newd)) >= 0)
+	close_on_exec(newd, PASS_ON_EXEC);
+
+    return res;
+}
+
+#endif
+
+#ifndef HAS_CLOSEFROM
+
+#include <unistd.h>
+#include <errno.h>
+#include <iostuff.h>
+
+/* closefrom() - closes all file descriptors from the given one up */
+
+int     closefrom(int lowfd)
+{
+    int     fd_limit = open_limit(0);
+    int     fd;
+
+    /*
+     * lowfrom does not have an easy to determine upper limit. A process may
+     * have files open that were inherited from a parent process with a less
+     * restrictive resource limit.
+     */
+    if (lowfd < 0) {
+	errno = EBADF;
+	return (-1);
+    }
+    if (fd_limit > 500)
+	fd_limit = 500;
+    for (fd = lowfd; fd < fd_limit; fd++)
+	(void) close(fd);
+
+    return (0);
+}
+
+#endif
+
+#ifdef MISSING_INET_NTOP
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+/* inet_ntop - convert binary address to printable address */
+
+const char *inet_ntop(int af, const void *src, char *dst, SOCKADDR_SIZE size)
+{
+    const unsigned char *addr;
+    char    buffer[sizeof("255.255.255.255")];
+    int     len;
+
+    if (af != AF_INET) {
+	errno = EAFNOSUPPORT;
+	return (0);
+    }
+    addr = (const unsigned char *) src;
+#if (CHAR_BIT > 8)
+    sprintf(buffer, "%d.%d.%d.%d", addr[0] & 0xff,
+	    addr[1] & 0xff, addr[2] & 0xff, addr[3] & 0xff);
+#else
+    sprintf(buffer, "%d.%d.%d.%d", addr[0], addr[1], addr[2], addr[3]);
+#endif
+    if ((len = strlen(buffer)) >= size) {
+	errno = ENOSPC;
+	return (0);
+    } else {
+	memcpy(dst, buffer, len + 1);
+	return (dst);
+    }
+}
+
+#endif
+
+#ifdef MISSING_INET_PTON
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+#include <errno.h>
+
+#ifndef INADDR_NONE
+#define INADDR_NONE 0xffffffff
+#endif
+
+/* inet_pton - convert printable address to binary address */
+
+int     inet_pton(int af, const char *src, void *dst)
+{
+    struct in_addr addr;
+
+    /*
+     * inet_addr() accepts a wider range of input formats than inet_pton();
+     * the former accepts 1-, 2-, or 3-part dotted addresses, while the
+     * latter requires dotted quad form.
+     */
+    if (af != AF_INET) {
+	errno = EAFNOSUPPORT;
+	return (-1);
+    } else if ((addr.s_addr = inet_addr(src)) == INADDR_NONE
+	       && strcmp(src, "255.255.255.255") != 0) {
+	return (0);
+    } else {
+	memcpy(dst, (void *) &addr, sizeof(addr));
+	return (1);
+    }
+}
+
+#endif