New upstream version 0.17upstream

1 files changed, 155 insertions, 0 deletions

diff --git a/finger/net.c b/finger/net.c
new file mode 100644
index 0000000..d6169fa
--- /dev/null
+++ b/finger/net.c
@@ -0,0 +1,155 @@
+/*
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Tony Nardo of the Johns Hopkins University/Applied Physics Lab.
+ *
+ * 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.
+ */
+
+#ifndef lint
+/*static char sccsid[] = "from: @(#)net.c	5.5 (Berkeley) 6/1/90";*/
+char net_rcsid[] = "$Id: net.c,v 1.9 1999/09/14 10:51:11 dholland Exp $";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <ctype.h>
+#include "finger.h"
+
+void netfinger(const char *name) {
+	register FILE *fp;
+	struct in_addr defaddr;
+	register int c, sawret, ateol;
+	struct hostent *hp, def;
+	struct servent *sp;
+	struct sockaddr_in sn;
+	int s;
+	char *alist[1], *host;
+
+	host = strrchr(name, '@');
+	if (!host) return;
+	*host++ = '\0';
+
+	memset(&sn, 0, sizeof(sn));
+
+	sp = getservbyname("finger", "tcp");
+	if (!sp) {
+		eprintf("finger: tcp/finger: unknown service\n");
+		return;
+	}
+	sn.sin_port = sp->s_port;
+
+	hp = gethostbyname(host);
+	if (!hp) {
+		if (!inet_aton(host, &defaddr)) {
+			eprintf("finger: unknown host: %s\n", host);
+			return;
+		}
+		def.h_name = host;
+		def.h_addr_list = alist;
+		def.h_addr = (char *)&defaddr;
+		def.h_length = sizeof(struct in_addr);
+		def.h_addrtype = AF_INET;
+		def.h_aliases = 0;
+		hp = &def;
+	}
+	sn.sin_family = hp->h_addrtype;
+	if (hp->h_length > (int)sizeof(sn.sin_addr)) {
+	    hp->h_length = sizeof(sn.sin_addr);
+	}
+	memcpy(&sn.sin_addr, hp->h_addr, hp->h_length);
+
+	if ((s = socket(hp->h_addrtype, SOCK_STREAM, 0)) < 0) {
+		eprintf("finger: socket: %s\n", strerror(errno));
+		return;
+	}
+
+	/* print hostname before connecting, in case it takes a while */
+	xprintf("[%s]\n", hp->h_name);
+	if (connect(s, (struct sockaddr *)&sn, sizeof(sn)) < 0) {
+		eprintf("finger: connect: %s\n", strerror(errno));
+		close(s);
+		return;
+	}
+
+	/* -l flag for remote fingerd  */
+	if (lflag) write(s, "/W ", 3);
+
+	/* send the name followed by <CR><LF> */
+	write(s, name, strlen(name));
+	write(s, "\r\n", 2);
+
+	/*
+	 * Read from the remote system; once we're connected, we assume some
+	 * data.  If none arrives, we hang until the user interrupts.
+	 *
+	 * If we see a <CR> or a <CR> with the high bit set, treat it as
+	 * a newline; if followed by a newline character, only output one
+	 * newline.
+	 *
+	 * Text is sent to xputc() for printability analysis.
+	 */ 
+	fp = fdopen(s, "r");
+	if (!fp) {
+		eprintf("finger: fdopen: %s\n", strerror(errno));
+		close(s);
+		return;
+	}
+
+	sawret = 0;
+	ateol = 1;
+	while ((c = getc(fp)) != EOF) {
+		c &= 0xff;
+		if (c == ('\r'|0x80) || c == ('\n'|0x80)) c &= 0x7f;
+		if (c == '\r') {
+			sawret = ateol = 1;
+			xputc('\n');
+		} 
+		else if (sawret && c == '\n') {
+			sawret = 0;
+			/* don't print */
+		}
+		else {
+			if (c == '\n') ateol = 1;
+			sawret = 0;
+			xputc(c);
+		}
+	}
+	if (!ateol) xputc('\n');
+	fclose(fp);
+}