1 files changed, 141 insertions, 0 deletions
diff --git a/usr/src/cmd/cmd-inet/usr.sbin/snoop/snoop_http.c b/usr/src/cmd/cmd-inet/usr.sbin/snoop/snoop_http.c
new file mode 100644
index 0000000..b6e6b9d
--- /dev/null
+++ b/usr/src/cmd/cmd-inet/usr.sbin/snoop/snoop_http.c
@@ -0,0 +1,141 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 1996-1998,2001 by Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*
+ * Protocol interpreter for the Hypertext Transfer Protocol (HTTP)
+ *
+ * Relevant standards:
+ *	Berners-Lee, T., et al: Hypertext Transfer Protocol -- HTTP/1.0.
+ *	    RFC 1945, May 1996
+ *	Fielding, R., et al: Hypertext Transfer Protocol -- HTTP/1.1.
+ *	    RFC 2068, June 1999
+ */
+
+#include <netinet/in.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include "snoop.h"
+
+#define	CR	13			/* "carriage return" character */
+#define	LF	10			/* "line feed" character */
+
+/*
+ * Summary lines: packet contents starting with less than MINCHARS
+ * printable characters will not be printed. MAXCHARS is the maximum
+ * number of characters printed.
+ * Detail lines: NLINES is the maximum number of content lines to print
+ */
+#define	MINCHARS	10
+#define	MAXCHARS	80
+#define	NLINES		5
+
+#define	MIN(a, b) (((a) < (b)) ? (a) : (b))
+
+static int printable(const char *line, const char *endp);
+
+int
+interpret_http(int flags, char *line, int fraglen)
+{
+	char *p, *q, *endp;
+	int c;
+	int lineno;
+
+	endp = line + fraglen;
+
+	if (flags & F_SUM) {
+		c = printable(line, endp - 1);
+		if (c < MINCHARS) {
+			(void) snprintf(get_sum_line(), MAXLINE,
+				"HTTP (body)");
+		} else {
+			(void) snprintf(get_sum_line(), MAXLINE,
+			    "HTTP %.*s", MIN(c, MAXCHARS), line);
+		}
+	}
+
+	if (flags & F_DTAIL) {
+		show_header("HTTP: ", "HyperText Transfer Protocol", fraglen);
+		show_space();
+
+		lineno = 0;
+		for (p = line; p < endp && lineno < NLINES; p = q + 1) {
+			c = printable(p, endp - 1);
+
+			/* stop if no printables, except if at line end */
+			if (c == 0 && *p != CR && *p != LF)
+				break;
+
+			/*
+			 * A line may be terminated either by an CR LF sequence
+			 * (DOS, Mac), or by LF alone
+			 */
+
+			q = memchr(p, CR, (endp - p));
+			if (q != NULL) {
+			    if (q < endp - 1 && q[1] == LF)
+				++q;	/* ignore subsequent LF character */
+			} else {
+			    q = memchr(p, LF, (endp - p));
+			    /* no CR/LF: use end of buffer */
+			    if (q == NULL)
+				q = endp - 1;
+			}
+
+			/* truncate lines containing non-printable characters */
+			(void) snprintf(get_line(0, c), get_line_remain(),
+			    "%.*s", c, p);
+			++lineno;
+		}
+
+		if (p < endp)	/* there was more data to be printed */
+			(void) snprintf(get_line(0, 5), get_line_remain(),
+			    "[...]");
+
+		show_space();
+	}
+
+	return (fraglen);
+}
+
+/*
+ * Return the length of the initial string starting with "startp" and
+ * ending with "endp" (inclusively) consisting only of printable
+ * characters.
+ */
+
+static int
+printable(const char *startp, const char *endp)
+{
+	const char *p = startp;
+
+	while (p <= endp && (isprint(*p) || *p == '\t'))
+		p++;
+
+	return (p - startp);
+}