1 files changed, 381 insertions, 0 deletions
diff --git a/usr/src/cmd/ssh/libssh/common/misc.c b/usr/src/cmd/ssh/libssh/common/misc.c
new file mode 100644
index 0000000000..5c4de6102d
--- /dev/null
+++ b/usr/src/cmd/ssh/libssh/common/misc.c
@@ -0,0 +1,381 @@
+/*
+ * Copyright (c) 2000 Markus Friedl.  All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#include "includes.h"
+RCSID("$OpenBSD: misc.c,v 1.19 2002/03/04 17:27:39 stevesk Exp $");
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include "misc.h"
+#include "log.h"
+#include "xmalloc.h"
+
+/* remove newline at end of string */
+char *
+chop(char *s)
+{
+	char *t = s;
+	while (*t) {
+		if (*t == '\n' || *t == '\r') {
+			*t = '\0';
+			return s;
+		}
+		t++;
+	}
+	return s;
+
+}
+
+/* set/unset filedescriptor to non-blocking */
+void
+set_nonblock(int fd)
+{
+	int val;
+
+	val = fcntl(fd, F_GETFL, 0);
+	if (val < 0) {
+		error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
+		return;
+	}
+	if (val & O_NONBLOCK) {
+		debug2("fd %d is O_NONBLOCK", fd);
+		return;
+	}
+	debug("fd %d setting O_NONBLOCK", fd);
+	val |= O_NONBLOCK;
+	if (fcntl(fd, F_SETFL, val) == -1)
+		debug("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
+		    fd, strerror(errno));
+}
+
+void
+unset_nonblock(int fd)
+{
+	int val;
+
+	val = fcntl(fd, F_GETFL, 0);
+	if (val < 0) {
+		error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
+		return;
+	}
+	if (!(val & O_NONBLOCK)) {
+		debug2("fd %d is not O_NONBLOCK", fd);
+		return;
+	}
+	debug("fd %d clearing O_NONBLOCK", fd);
+	val &= ~O_NONBLOCK;
+	if (fcntl(fd, F_SETFL, val) == -1)
+		debug("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
+		    fd, strerror(errno));
+}
+
+/* disable nagle on socket */
+void
+set_nodelay(int fd)
+{
+	int opt;
+	socklen_t optlen;
+
+	optlen = sizeof opt;
+	if (getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, &optlen) == -1) {
+		error("getsockopt TCP_NODELAY: %.100s", strerror(errno));
+		return;
+	}
+	if (opt == 1) {
+		debug2("fd %d is TCP_NODELAY", fd);
+		return;
+	}
+	opt = 1;
+	debug("fd %d setting TCP_NODELAY", fd);
+	if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof opt) == -1)
+		error("setsockopt TCP_NODELAY: %.100s", strerror(errno));
+}
+
+/* Characters considered whitespace in strsep calls. */
+#define WHITESPACE " \t\r\n"
+
+/* return next token in configuration line */
+char *
+strdelim(char **s)
+{
+	char *old;
+	int wspace = 0;
+
+	if (*s == NULL)
+		return NULL;
+
+	old = *s;
+
+	*s = strpbrk(*s, WHITESPACE "=");
+	if (*s == NULL)
+		return (old);
+
+	/* Allow only one '=' to be skipped */
+	if (*s[0] == '=')
+		wspace = 1;
+	*s[0] = '\0';
+
+	*s += strspn(*s + 1, WHITESPACE) + 1;
+	if (*s[0] == '=' && !wspace)
+		*s += strspn(*s + 1, WHITESPACE) + 1;
+
+	return (old);
+}
+
+struct passwd *
+pwcopy(struct passwd *pw)
+{
+	struct passwd *copy = xmalloc(sizeof(*copy));
+
+	memset(copy, 0, sizeof(*copy));
+	copy->pw_name = xstrdup(pw->pw_name);
+	copy->pw_passwd = xstrdup(pw->pw_passwd);
+	copy->pw_gecos = xstrdup(pw->pw_gecos);
+	copy->pw_uid = pw->pw_uid;
+	copy->pw_gid = pw->pw_gid;
+#ifdef HAVE_PW_EXPIRE_IN_PASSWD
+	copy->pw_expire = pw->pw_expire;
+#endif
+#ifdef HAVE_PW_CHANGE_IN_PASSWD
+	copy->pw_change = pw->pw_change;
+#endif
+#ifdef HAVE_PW_CLASS_IN_PASSWD
+	copy->pw_class = xstrdup(pw->pw_class);
+#endif
+	copy->pw_dir = xstrdup(pw->pw_dir);
+	copy->pw_shell = xstrdup(pw->pw_shell);
+	return copy;
+}
+
+void
+pwfree(struct passwd **pw)
+{
+	struct passwd *p;
+
+	if (pw == NULL || *pw == NULL)
+		return;
+
+	p = *pw;
+	*pw = NULL;
+
+	xfree(p->pw_name);
+	xfree(p->pw_passwd);
+	xfree(p->pw_gecos);
+#ifdef HAVE_PW_CLASS_IN_PASSWD
+	xfree(p->pw_class);
+#endif
+	xfree(p->pw_dir);
+	xfree(p->pw_shell);
+	xfree(p);
+}
+
+/*
+ * Convert ASCII string to TCP/IP port number.
+ * Port must be >0 and <=65535.
+ * Return 0 if invalid.
+ */
+int
+a2port(const char *s)
+{
+	long port;
+	char *endp;
+
+	errno = 0;
+	port = strtol(s, &endp, 0);
+	if (s == endp || *endp != '\0' ||
+	    (errno == ERANGE && (port == LONG_MIN || port == LONG_MAX)) ||
+	    port <= 0 || port > 65535)
+		return 0;
+
+	return port;
+}
+
+#define SECONDS		1
+#define MINUTES		(SECONDS * 60)
+#define HOURS		(MINUTES * 60)
+#define DAYS		(HOURS * 24)
+#define WEEKS		(DAYS * 7)
+
+/*
+ * Convert a time string into seconds; format is
+ * a sequence of:
+ *      time[qualifier]
+ *
+ * Valid time qualifiers are:
+ *      <none>  seconds
+ *      s|S     seconds
+ *      m|M     minutes
+ *      h|H     hours
+ *      d|D     days
+ *      w|W     weeks
+ *
+ * Examples:
+ *      90m     90 minutes
+ *      1h30m   90 minutes
+ *      2d      2 days
+ *      1w      1 week
+ *
+ * Return -1 if time string is invalid.
+ */
+long
+convtime(const char *s)
+{
+	long total, secs;
+	const char *p;
+	char *endp;
+
+	errno = 0;
+	total = 0;
+	p = s;
+
+	if (p == NULL || *p == '\0')
+		return -1;
+
+	while (*p) {
+		secs = strtol(p, &endp, 10);
+		if (p == endp ||
+		    (errno == ERANGE && (secs == LONG_MIN || secs == LONG_MAX)) ||
+		    secs < 0)
+			return -1;
+
+		switch (*endp++) {
+		case '\0':
+			endp--;
+			break;
+		case 's':
+		case 'S':
+			break;
+		case 'm':
+		case 'M':
+			secs *= MINUTES;
+			break;
+		case 'h':
+		case 'H':
+			secs *= HOURS;
+			break;
+		case 'd':
+		case 'D':
+			secs *= DAYS;
+			break;
+		case 'w':
+		case 'W':
+			secs *= WEEKS;
+			break;
+		default:
+			return -1;
+		}
+		total += secs;
+		if (total < 0)
+			return -1;
+		p = endp;
+	}
+
+	return total;
+}
+
+char *
+cleanhostname(char *host)
+{
+	if (*host == '[' && host[strlen(host) - 1] == ']') {
+		host[strlen(host) - 1] = '\0';
+		return (host + 1);
+	} else
+		return host;
+}
+
+char *
+colon(char *cp)
+{
+	int flag = 0;
+
+	if (*cp == ':')		/* Leading colon is part of file name. */
+		return (0);
+	if (*cp == '[')
+		flag = 1;
+
+	for (; *cp; ++cp) {
+		if (*cp == '@' && *(cp+1) == '[')
+			flag = 1;
+		if (*cp == ']' && *(cp+1) == ':' && flag)
+			return (cp+1);
+		if (*cp == ':' && !flag)
+			return (cp);
+		if (*cp == '/')
+			return (0);
+	}
+	return (0);
+}
+
+/* function to assist building execv() arguments */
+/* PRINTFLIKE2 */
+void
+addargs(arglist *args, char *fmt, ...)
+{
+	va_list ap;
+	char buf[1024];
+
+	va_start(ap, fmt);
+	vsnprintf(buf, sizeof(buf), fmt, ap);
+	va_end(ap);
+
+	if (args->list == NULL) {
+		args->nalloc = 32;
+		args->num = 0;
+	} else if (args->num+2 >= args->nalloc)
+		args->nalloc *= 2;
+
+	args->list = xrealloc(args->list, args->nalloc * sizeof(char *));
+	args->list[args->num++] = xstrdup(buf);
+	args->list[args->num] = NULL;
+}
+
+mysig_t
+mysignal(int sig, mysig_t act)
+{
+#ifdef HAVE_SIGACTION
+	struct sigaction sa, osa;
+
+	if (sigaction(sig, NULL, &osa) == -1)
+		return (mysig_t) -1;
+	if (osa.sa_handler != act) {
+		memset(&sa, 0, sizeof(sa));
+		sigemptyset(&sa.sa_mask);
+		sa.sa_flags = 0;
+#if defined(SA_INTERRUPT)
+		if (sig == SIGALRM)
+			sa.sa_flags |= SA_INTERRUPT;
+#endif
+		sa.sa_handler = act;
+		if (sigaction(sig, &sa, NULL) == -1)
+			return (mysig_t) -1;
+	}
+	return (osa.sa_handler);
+#else
+	return (signal(sig, act));
+#endif
+}