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authorGilbert Ramirez <gram@alumni.rice.edu>2004-07-18 18:06:47 +0000
committerGilbert Ramirez <gram@alumni.rice.edu>2004-07-18 18:06:47 +0000
commit669db206cb1f270046ad400fff7655e20c63e723 (patch)
tree4eff24a2e16c8963e497e1fc575f35e6af59bd26 /packet-http.c
parentae46c27a38700af669ef907491081f09df6f6b2c (diff)
Move dissectors to epan/dissectors directory.
Also move ncp222.py, x11-fields, process-x11-fields.pl, make-reg-dotc, and make-reg-dotc.py. Adjust #include lines in files that include packet-*.h files. svn path=/trunk/; revision=11410
Diffstat (limited to 'packet-http.c')
-rw-r--r--packet-http.c1759
1 files changed, 0 insertions, 1759 deletions
diff --git a/packet-http.c b/packet-http.c
deleted file mode 100644
index 76f70e289f..0000000000
--- a/packet-http.c
+++ /dev/null
@@ -1,1759 +0,0 @@
-/* packet-http.c
- * Routines for HTTP packet disassembly
- * RFC 1945 (HTTP/1.0)
- * RFC 2616 (HTTP/1.1)
- *
- * Guy Harris <guy@alum.mit.edu>
- *
- * Copyright 2004, Jerry Talkington <jtalkington@users.sourceforge.net>
- * Copyright 2002, Tim Potter <tpot@samba.org>
- * Copyright 1999, Andrew Tridgell <tridge@samba.org>
- *
- * $Id$
- *
- * Ethereal - Network traffic analyzer
- * By Gerald Combs <gerald@ethereal.com>
- * Copyright 1998 Gerald Combs
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <string.h>
-#include <ctype.h>
-
-#include <glib.h>
-#include <epan/packet.h>
-#include <epan/strutil.h>
-
-#include "util.h"
-#include "req_resp_hdrs.h"
-#include "packet-http.h"
-#include "prefs.h"
-
-typedef enum _http_type {
- HTTP_REQUEST,
- HTTP_RESPONSE,
- HTTP_NOTIFICATION,
- HTTP_OTHERS
-} http_type_t;
-
-#include "tap.h"
-
-static int http_tap = -1;
-
-static int proto_http = -1;
-static int hf_http_notification = -1;
-static int hf_http_response = -1;
-static int hf_http_request = -1;
-static int hf_http_basic = -1;
-static int hf_http_request_method = -1;
-static int hf_http_response_code = -1;
-static int hf_http_authorization = -1;
-static int hf_http_proxy_authenticate = -1;
-static int hf_http_proxy_authorization = -1;
-static int hf_http_www_authenticate = -1;
-static int hf_http_content_type = -1;
-static int hf_http_content_length = -1;
-static int hf_http_content_encoding = -1;
-static int hf_http_transfer_encoding = -1;
-
-static gint ett_http = -1;
-static gint ett_http_ntlmssp = -1;
-static gint ett_http_request = -1;
-static gint ett_http_chunked_response = -1;
-static gint ett_http_chunk_data = -1;
-static gint ett_http_encoded_entity = -1;
-
-static dissector_handle_t data_handle;
-static dissector_handle_t media_handle;
-static dissector_handle_t http_handle;
-
-/*
- * desegmentation of HTTP headers
- * (when we are over TCP or another protocol providing the desegmentation API)
- */
-static gboolean http_desegment_headers = FALSE;
-
-/*
- * desegmentation of HTTP bodies
- * (when we are over TCP or another protocol providing the desegmentation API)
- * TODO let the user filter on content-type the bodies he wants desegmented
- */
-static gboolean http_desegment_body = FALSE;
-
-/*
- * De-chunking of content-encoding: chunk entity bodies.
- */
-static gboolean http_dechunk_body = TRUE;
-
-/*
- * Decompression of zlib encoded entities.
- */
-#ifdef HAVE_LIBZ
-static gboolean http_decompress_body = TRUE;
-#else
-static gboolean http_decompress_body = FALSE;
-#endif
-
-
-#define TCP_PORT_HTTP 80
-#define TCP_PORT_PROXY_HTTP 3128
-#define TCP_PORT_PROXY_ADMIN_HTTP 3132
-#define TCP_ALT_PORT_HTTP 8080
-#define TCP_PORT_HKP 11371
-/*
- * SSDP is implemented atop HTTP (yes, it really *does* run over UDP).
- */
-#define TCP_PORT_SSDP 1900
-#define UDP_PORT_SSDP 1900
-
-/*
- * Protocols implemented atop HTTP.
- */
-typedef enum {
- PROTO_HTTP, /* just HTTP */
- PROTO_SSDP /* Simple Service Discovery Protocol */
-} http_proto_t;
-
-typedef void (*RequestDissector)(tvbuff_t*, proto_tree*, int);
-
-/*
- * Structure holding information from headers needed by main
- * HTTP dissector code.
- */
-typedef struct {
- char *content_type;
- char *content_type_parameters;
- long content_length; /* XXX - make it 64-bit? */
- char *content_encoding;
- char *transfer_encoding;
-} headers_t;
-
-static int is_http_request_or_reply(const gchar *data, int linelen, http_type_t *type,
- RequestDissector *req_dissector, int *req_strlen);
-static int chunked_encoding_dissector(tvbuff_t **tvb_ptr, packet_info *pinfo,
- proto_tree *tree, int offset);
-static void process_header(tvbuff_t *tvb, int offset, int next_offset,
- const guchar *line, int linelen, int colon_offset, packet_info *pinfo,
- proto_tree *tree, headers_t *eh_ptr);
-static gint find_header_hf_value(tvbuff_t *tvb, int offset, guint header_len);
-static gboolean check_auth_ntlmssp(proto_item *hdr_item, tvbuff_t *tvb,
- packet_info *pinfo, gchar *value);
-static gboolean check_auth_basic(proto_item *hdr_item, tvbuff_t *tvb,
- gchar *value);
-
-static dissector_table_t port_subdissector_table;
-static dissector_table_t media_type_subdissector_table;
-static heur_dissector_list_t heur_subdissector_list;
-
-static dissector_handle_t ntlmssp_handle=NULL;
-
-
-/* Return a tvb that contains the binary representation of a base64
- string */
-
-static tvbuff_t *
-base64_to_tvb(const char *base64)
-{
- tvbuff_t *tvb;
- char *data = g_strdup(base64);
- size_t len;
-
- len = epan_base64_decode(data);
- tvb = tvb_new_real_data((const guint8 *)data, len, len);
-
- tvb_set_free_cb(tvb, g_free);
-
- return tvb;
-}
-
-static void
-dissect_http_ntlmssp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
- const char *line)
-{
- tvbuff_t *ntlmssp_tvb;
-
- ntlmssp_tvb = base64_to_tvb(line);
- tvb_set_child_real_data_tvbuff(tvb, ntlmssp_tvb);
- add_new_data_source(pinfo, ntlmssp_tvb, "NTLMSSP Data");
-
- call_dissector(ntlmssp_handle, ntlmssp_tvb, pinfo, tree);
-}
-
-static void
-cleanup_headers(void *arg)
-{
- headers_t *headers = arg;
-
- if (headers->content_type != NULL)
- g_free(headers->content_type);
- /*
- * The content_type_parameters field actually points into the
- * content_type headers, so don't free it, as that'll double-free
- * some memory.
- */
- if (headers->content_encoding != NULL)
- g_free(headers->content_encoding);
- if (headers->transfer_encoding != NULL)
- g_free(headers->transfer_encoding);
-}
-
-/*
- * TODO: remove this ugly global variable.
- *
- * XXX - we leak "http_info_value_t" structures.
- * XXX - this gets overwritten if there's more than one HTTP request or
- * reply in the tvbuff.
- */
-static http_info_value_t *stat_info;
-
-static int
-dissect_http_message(tvbuff_t *tvb, int offset, packet_info *pinfo,
- proto_tree *tree)
-{
- http_proto_t proto;
- char *proto_tag;
- proto_tree *http_tree = NULL;
- proto_item *ti = NULL;
- const guchar *line;
- gint next_offset;
- const guchar *linep, *lineend;
- int orig_offset;
- int first_linelen, linelen;
- gboolean is_request_or_reply;
- gboolean saw_req_resp_or_header;
- guchar c;
- http_type_t http_type;
- proto_item *hdr_item;
- RequestDissector req_dissector;
- int req_strlen;
- proto_tree *req_tree;
- int colon_offset;
- headers_t headers;
- int datalen;
- int reported_datalen;
- dissector_handle_t handle;
- gboolean dissected;
-
- /*
- * Is this a request or response?
- *
- * Note that "tvb_find_line_end()" will return a value that
- * is not longer than what's in the buffer, so the
- * "tvb_get_ptr()" call won't throw an exception.
- */
- first_linelen = tvb_find_line_end(tvb, offset,
- tvb_ensure_length_remaining(tvb, offset), &next_offset,
- FALSE);
- /*
- * Is the first line a request or response?
- */
- line = tvb_get_ptr(tvb, offset, first_linelen);
- http_type = HTTP_OTHERS; /* type not known yet */
- is_request_or_reply = is_http_request_or_reply((const gchar *)line,
- first_linelen, &http_type, NULL, NULL);
- if (is_request_or_reply) {
- /*
- * Yes, it's a request or response.
- * Do header desegmentation if we've been told to,
- * and do body desegmentation if we've been told to and
- * we find a Content-Length header.
- */
- if (!req_resp_hdrs_do_reassembly(tvb, pinfo,
- http_desegment_headers, http_desegment_body)) {
- /*
- * More data needed for desegmentation.
- */
- return -1;
- }
- }
-
- stat_info = g_malloc(sizeof(http_info_value_t));
- stat_info->response_code = 0;
- stat_info->request_method = NULL;
-
- switch (pinfo->match_port) {
-
- case TCP_PORT_SSDP: /* TCP_PORT_SSDP = UDP_PORT_SSDP */
- proto = PROTO_SSDP;
- proto_tag = "SSDP";
- break;
-
- default:
- proto = PROTO_HTTP;
- proto_tag = "HTTP";
- break;
- }
-
- if (check_col(pinfo->cinfo, COL_PROTOCOL))
- col_set_str(pinfo->cinfo, COL_PROTOCOL, proto_tag);
- if (check_col(pinfo->cinfo, COL_INFO)) {
- /*
- * Put the first line from the buffer into the summary
- * if it's an HTTP request or reply (but leave out the
- * line terminator).
- * Otherwise, just call it a continuation.
- *
- * Note that "tvb_find_line_end()" will return a value that
- * is not longer than what's in the buffer, so the
- * "tvb_get_ptr()" call won't throw an exception.
- */
- line = tvb_get_ptr(tvb, offset, first_linelen);
- if (is_request_or_reply)
- col_add_str(pinfo->cinfo, COL_INFO,
- format_text(line, first_linelen));
- else
- col_set_str(pinfo->cinfo, COL_INFO, "Continuation");
- }
-
- orig_offset = offset;
- if (tree) {
- ti = proto_tree_add_item(tree, proto_http, tvb, offset, -1,
- FALSE);
- http_tree = proto_item_add_subtree(ti, ett_http);
- }
-
- /*
- * Process the packet data, a line at a time.
- */
- http_type = HTTP_OTHERS; /* type not known yet */
- headers.content_type = NULL; /* content type not known yet */
- headers.content_type_parameters = NULL; /* content type parameters too */
- headers.content_length = -1; /* content length not known yet */
- headers.content_encoding = NULL; /* content encoding not known yet */
- headers.transfer_encoding = NULL; /* transfer encoding not known yet */
- saw_req_resp_or_header = FALSE; /* haven't seen anything yet */
- CLEANUP_PUSH(cleanup_headers, &headers);
- while (tvb_reported_length_remaining(tvb, offset) != 0) {
- /*
- * Find the end of the line.
- */
- linelen = tvb_find_line_end(tvb, offset,
- tvb_ensure_length_remaining(tvb, offset), &next_offset,
- FALSE);
- if (linelen < 0)
- return -1;
-
- /*
- * Get a buffer that refers to the line.
- */
- line = tvb_get_ptr(tvb, offset, linelen);
- lineend = line + linelen;
- colon_offset = -1;
-
- /*
- * OK, does it look like an HTTP request or response?
- */
- req_dissector = NULL;
- is_request_or_reply = is_http_request_or_reply((const gchar *)line,
- linelen, &http_type, &req_dissector, &req_strlen);
- if (is_request_or_reply)
- goto is_http;
-
- /*
- * No. Does it look like a blank line (as would appear
- * at the end of an HTTP request)?
- */
- if (linelen == 0)
- goto is_http; /* Yes. */
-
- /*
- * No. Does it look like a header?
- */
- linep = line;
- colon_offset = offset;
- while (linep < lineend) {
- c = *linep++;
-
- /*
- * This must be a CHAR to be part of a token; that
- * means it must be ASCII.
- */
- if (!isascii(c))
- break; /* not ASCII, thus not a CHAR */
-
- /*
- * This mustn't be a CTL to be part of a token.
- *
- * XXX - what about leading LWS on continuation
- * lines of a header?
- */
- if (iscntrl(c))
- break; /* CTL, not part of a header */
-
- /*
- * This mustn't be a SEP to be part of a token;
- * a ':' ends the token, everything else is an
- * indication that this isn't a header.
- */
- switch (c) {
-
- case '(':
- case ')':
- case '<':
- case '>':
- case '@':
- case ',':
- case ';':
- case '\\':
- case '"':
- case '/':
- case '[':
- case ']':
- case '?':
- case '=':
- case '{':
- case '}':
- case ' ':
- /*
- * It's a separator, so it's not part of a
- * token, so it's not a field name for the
- * beginning of a header.
- *
- * (We don't have to check for HT; that's
- * already been ruled out by "iscntrl()".)
- */
- goto not_http;
-
- case ':':
- /*
- * This ends the token; we consider this
- * to be a header.
- */
- goto is_http;
-
- default:
- colon_offset++;
- break;
- }
- }
-
- /*
- * We haven't seen the colon, but everything else looks
- * OK for a header line.
- *
- * If we've already seen an HTTP request or response
- * line, or a header line, and we're at the end of
- * the tvbuff, we assume this is an incomplete header
- * line. (We quit this loop after seeing a blank line,
- * so if we've seen a request or response line, or a
- * header line, this is probably more of the request
- * or response we're presumably seeing. There is some
- * risk of false positives, but the same applies for
- * full request or response lines or header lines,
- * although that's less likely.)
- *
- * We throw an exception in that case, by checking for
- * the existence of the next byte after the last one
- * in the line. If it exists, "tvb_ensure_bytes_exist()"
- * throws no exception, and we fall through to the
- * "not HTTP" case. If it doesn't exist,
- * "tvb_ensure_bytes_exist()" will throw the appropriate
- * exception.
- */
- if (saw_req_resp_or_header)
- tvb_ensure_bytes_exist(tvb, offset, linelen + 1);
-
- not_http:
- /*
- * We don't consider this part of an HTTP request or
- * reply, so we don't display it.
- * (Yeah, that means we don't display, say, a text/http
- * page, but you can get that from the data pane.)
- */
- break;
-
- is_http:
- /*
- * Process this line.
- */
- if (linelen == 0) {
- /*
- * This is a blank line, which means that
- * whatever follows it isn't part of this
- * request or reply.
- */
- proto_tree_add_text(http_tree, tvb, offset,
- next_offset - offset, "%s",
- tvb_format_text(tvb, offset, next_offset - offset));
- offset = next_offset;
- break;
- }
-
- /*
- * Not a blank line - either a request, a reply, or a header
- * line.
- */
- saw_req_resp_or_header = TRUE;
- if (is_request_or_reply) {
- if (tree) {
- hdr_item = proto_tree_add_text(http_tree, tvb,
- offset, next_offset - offset, "%s",
- tvb_format_text(tvb, offset,
- next_offset - offset));
- if (req_dissector) {
- req_tree = proto_item_add_subtree(
- hdr_item, ett_http_request);
- req_dissector(tvb, req_tree,
- req_strlen);
- }
- }
- } else {
- /*
- * Header.
- */
- process_header(tvb, offset, next_offset, line, linelen,
- colon_offset, pinfo, http_tree, &headers);
- }
- offset = next_offset;
- }
-
- if (tree) {
- switch (http_type) {
-
- case HTTP_NOTIFICATION:
- proto_tree_add_boolean_hidden(http_tree,
- hf_http_notification, tvb, 0, 0, 1);
- break;
-
- case HTTP_RESPONSE:
- proto_tree_add_boolean_hidden(http_tree,
- hf_http_response, tvb, 0, 0, 1);
- break;
-
- case HTTP_REQUEST:
- proto_tree_add_boolean_hidden(http_tree,
- hf_http_request, tvb, 0, 0, 1);
- break;
-
- case HTTP_OTHERS:
- default:
- break;
- }
- }
-
- /*
- * If a content length was supplied, the amount of data to be
- * processed as HTTP payload is the minimum of the content
- * length and the amount of data remaining in the frame.
- *
- * If no content length was supplied (or if a bad content length
- * was supplied), the amount of data to be processed is the amount
- * of data remaining in the frame.
- *
- * If there was no Content-Length entity header, we should
- * accumulate all data until the end of the connection.
- * That'd require that the TCP dissector call subdissectors
- * for all frames with FIN, even if they contain no data,
- * which would require subdissectors to deal intelligently
- * with empty segments.
- *
- * Acccording to RFC 2616, however, 1xx responses, 204 responses,
- * and 304 responses MUST NOT include a message body; if no
- * content length is specified for them, we don't attempt to
- * dissect the body.
- *
- * XXX - it says the same about responses to HEAD requests;
- * unless there's a way to determine from the response
- * whether it's a response to a HEAD request, we have to
- * keep information about the request and associate that with
- * the response in order to handle that.
- */
- datalen = tvb_length_remaining(tvb, offset);
- if (headers.content_length != -1) {
- if (datalen > headers.content_length)
- datalen = headers.content_length;
-
- /*
- * XXX - limit the reported length in the tvbuff we'll
- * hand to a subdissector to be no greater than the
- * content length.
- *
- * We really need both unreassembled and "how long it'd
- * be if it were reassembled" lengths for tvbuffs, so
- * that we throw the appropriate exceptions for
- * "not enough data captured" (running past the length),
- * "packet needed reassembly" (within the length but
- * running past the unreassembled length), and
- * "packet is malformed" (running past the reassembled
- * length).
- */
- reported_datalen = tvb_reported_length_remaining(tvb, offset);
- if (reported_datalen > headers.content_length)
- reported_datalen = headers.content_length;
- } else {
- if ((stat_info->response_code/100) == 1 ||
- stat_info->response_code == 204 ||
- stat_info->response_code == 304)
- datalen = 0; /* no content! */
- else
- reported_datalen = -1;
- }
-
- if (datalen > 0) {
- /*
- * There's stuff left over; process it.
- */
- tvbuff_t *next_tvb;
- void *save_private_data = NULL;
- gint chunks_decoded = 0;
-
- /*
- * Create a tvbuff for the payload.
- *
- * The amount of data to be processed that's
- * available in the tvbuff is "datalen", which
- * is the minimum of the amount of data left in
- * the tvbuff and any specified content length.
- *
- * The amount of data to be processed that's in
- * this frame, regardless of whether it was
- * captured or not, is "reported_datalen",
- * which, if no content length was specified,
- * is -1, i.e. "to the end of the frame.
- */
- next_tvb = tvb_new_subset(tvb, offset, datalen,
- reported_datalen);
- /*
- * BEWARE - next_tvb is a subset of another tvb,
- * so we MUST NOT attempt tvb_free(next_tvb);
- */
-
- /*
- * Handle *transfer* encodings other than "identity".
- */
- if (headers.transfer_encoding != NULL &&
- strcasecmp(headers.transfer_encoding, "identity") != 0) {
- if (http_dechunk_body &&
- (strcasecmp(headers.transfer_encoding, "chunked")
- == 0)) {
-
- chunks_decoded = chunked_encoding_dissector(
- &next_tvb, pinfo, http_tree, 0);
-
- if (chunks_decoded <= 0) {
- /*
- * The chunks weren't reassembled,
- * or there was a single zero
- * length chunk.
- */
- goto body_dissected;
- } else {
- /*
- * Add a new data source for the
- * de-chunked data.
- */
- tvb_set_child_real_data_tvbuff(tvb,
- next_tvb);
- add_new_data_source(pinfo, next_tvb,
- "De-chunked entity body");
- }
- } else {
- /*
- * We currently can't handle, for example,
- * "gzip", "compress", or "deflate" as
- * *transfer* encodings; just handle them
- * as data for now.
- */
- call_dissector(data_handle, next_tvb, pinfo,
- http_tree);
- goto body_dissected;
- }
- }
- /*
- * At this point, any chunked *transfer* coding has been removed
- * (the entity body has been dechunked) so it can be presented
- * for the following operation (*content* encoding), or it has
- * been been handed off to the data dissector.
- *
- * Handle *content* encodings other than "identity" (which
- * shouldn't appear in a Content-Encoding header, but
- * we handle it in any case).
- */
- if (headers.content_encoding != NULL &&
- strcasecmp(headers.content_encoding, "identity") != 0) {
- /*
- * We currently can't handle, for example, "compress";
- * just handle them as data for now.
- *
- * After July 7, 2004 the LZW patent expires, so support
- * might be added then. However, I don't think that
- * anybody ever really implemented "compress", due to
- * the aforementioned patent.
- */
- tvbuff_t *uncomp_tvb = NULL;
- proto_item *e_ti = NULL;
- proto_tree *e_tree = NULL;
-
- if (http_decompress_body &&
- (strcasecmp(headers.content_encoding, "gzip") == 0 ||
- strcasecmp(headers.content_encoding, "deflate")
- == 0)) {
-
- uncomp_tvb = tvb_uncompress(next_tvb, 0,
- tvb_length(next_tvb));
- }
-
- /*
- * Add the encoded entity to the protocol tree
- */
- e_ti = proto_tree_add_text(http_tree, next_tvb,
- 0, tvb_length(next_tvb),
- "Content-encoded entity body (%s)",
- headers.content_encoding);
- e_tree = proto_item_add_subtree(e_ti,
- ett_http_encoded_entity);
-
- if (uncomp_tvb != NULL) {
- /*
- * Decompression worked
- */
-
- /* XXX - Don't free this, since it's possible
- * that the data was only partially
- * decompressed, such as when desegmentation
- * isn't enabled.
- *
- tvb_free(next_tvb);
- */
- next_tvb = uncomp_tvb;
- tvb_set_child_real_data_tvbuff(tvb, next_tvb);
- add_new_data_source(pinfo, next_tvb,
- "Uncompressed entity body");
- } else {
- if (chunks_decoded > 1) {
- tvb_set_child_real_data_tvbuff(tvb,
- next_tvb);
- add_new_data_source(pinfo, next_tvb,
- "Compressed entity body");
- }
- call_dissector(data_handle, next_tvb, pinfo,
- e_tree);
-
- goto body_dissected;
- }
- }
- /*
- * Note that a new data source is added for the entity body
- * only if it was content-encoded and/or transfer-encoded.
- */
-
- /*
- * Do subdissector checks.
- *
- * First, check whether some subdissector asked that they
- * be called if something was on some particular port.
- */
- handle = dissector_get_port_handle(port_subdissector_table,
- pinfo->match_port);
- if (handle == NULL && headers.content_type != NULL) {
- /*
- * We didn't find any subdissector that
- * registered for the port, and we have a
- * Content-Type value. Is there any subdissector
- * for that content type?
- */
- save_private_data = pinfo->private_data;
- /*
- * XXX - this won't get freed if the subdissector
- * throws an exception. Do we really need to
- * strdup it?
- */
- if (headers.content_type_parameters)
- pinfo->private_data = g_strdup(headers.content_type_parameters);
- else
- pinfo->private_data = NULL;
- /*
- * Calling the string handle for the media type
- * dissector table will set pinfo->match_string
- * to headers.content_type for us.
- */
- pinfo->match_string = headers.content_type;
- handle = dissector_get_string_handle(
- media_type_subdissector_table,
- headers.content_type);
- /*
- * Calling the default media handle otherwise
- */
- if (handle == NULL) {
- handle = media_handle;
- }
- }
- if (handle != NULL) {
- /*
- * We have a subdissector - call it.
- */
- dissected = call_dissector(handle, next_tvb, pinfo,
- tree);
- } else {
- /*
- * We don't have a subdissector - try the heuristic
- * subdissectors.
- */
- dissected = dissector_try_heuristic(
- heur_subdissector_list, next_tvb, pinfo, tree);
- }
- if (dissected) {
- /*
- * The subdissector dissected the body.
- * Fix up the top-level item so that it doesn't
- * include the stuff for that protocol.
- */
- if (ti != NULL)
- proto_item_set_len(ti, offset);
- } else {
- call_dissector(data_handle, next_tvb, pinfo,
- http_tree);
- }
-
- body_dissected:
- /*
- * Do *not* attempt at freeing the private data;
- * it may be in use by subdissectors.
- */
- if (save_private_data)
- pinfo->private_data = save_private_data;
- /*
- * We've processed "datalen" bytes worth of data
- * (which may be no data at all); advance the
- * offset past whatever data we've processed.
- */
- offset += datalen;
- }
-
- /*
- * Clean up any header stuff, by calling and popping the cleanup
- * handler.
- */
- CLEANUP_CALL_AND_POP;
-
- tap_queue_packet(http_tap, pinfo, stat_info);
-
- return offset - orig_offset;
-}
-
-/* This can be used to dissect an HTTP request until such time
- * that a more complete dissector is written for that HTTP request.
- * This simple dissectory only puts http.request_method into a sub-tree.
- */
-static void
-basic_request_dissector(tvbuff_t *tvb, proto_tree *tree, int req_strlen)
-{
- proto_tree_add_item(tree, hf_http_request_method, tvb, 0, req_strlen, FALSE);
-}
-
-static void
-basic_response_dissector(tvbuff_t *tvb, proto_tree *tree, int resp_strlen)
-{
- gchar *data;
- int minor, major, status_code;
-
- /* BEWARE - sscanf() only operates on C strings.
- * The pointer returned by tvb_get_ptr points into the real data,
- * which is not necessarily NULL terminated. For this reason,
- * the sscanf() call is only applied to a buffer guaranteed to
- * only contain a NULL terminated string. */
- data = g_strndup((const gchar *)tvb_get_ptr(tvb, 5, resp_strlen), resp_strlen);
- if (sscanf((const gchar *)data, "%d.%d %d", &minor, &major, &status_code) == 3) {
- proto_tree_add_uint(tree, hf_http_response_code, tvb, 9, 3, status_code);
- stat_info->response_code = status_code;
- }
- g_free(data);
-}
-
-/*
- * Dissect the http data chunks and add them to the tree.
- */
-static int
-chunked_encoding_dissector(tvbuff_t **tvb_ptr, packet_info *pinfo,
- proto_tree *tree, int offset)
-{
- guint8 *chunk_string = NULL;
- gint chunk_size = 0;
- gint chunk_offset = 0;
- gint datalen = 0;
- gint linelen = 0;
- gint chunks_decoded = 0;
- tvbuff_t *tvb = NULL;
- tvbuff_t *new_tvb = NULL;
- gint chunked_data_size = 0;
- proto_tree *subtree = NULL;
- proto_item *ti = NULL;
-
- if (tvb_ptr == NULL || *tvb_ptr == NULL) {
- return 0;
- }
-
- tvb = *tvb_ptr;
-
- datalen = tvb_reported_length_remaining(tvb, offset);
-
- if (tree) {
- ti = proto_tree_add_text(tree, tvb, offset, datalen,
- "HTTP chunked response");
- subtree = proto_item_add_subtree(ti, ett_http_chunked_response);
- }
-
-
- while (datalen != 0) {
- proto_item *chunk_ti = NULL;
- proto_tree *chunk_subtree = NULL;
- tvbuff_t *data_tvb = NULL;
- gchar *c = NULL;
-
- linelen = tvb_find_line_end(tvb, offset, -1, &chunk_offset, TRUE);
-
- if (linelen <= 0) {
- /* Can't get the chunk size line */
- break;
- }
-
- chunk_string = tvb_get_string(tvb, offset, linelen);
-
- if (chunk_string == NULL) {
- /* Can't get the chunk size line */
- break;
- }
-
- c = chunk_string;
-
- /*
- * We don't care about the extensions.
- */
- if ((c = strchr(c, ';'))) {
- *c = '\0';
- }
-
- if (sscanf(chunk_string, "%x", &chunk_size) != 1) {
- g_free(chunk_string);
- break;
- }
-
- g_free(chunk_string);
-
-
- if (chunk_size > datalen) {
- /*
- * The chunk size is more than what's in the tvbuff,
- * so either the user hasn't enabled decoding, or all
- * of the segments weren't captured.
- */
- chunk_size = datalen;
- }/* else if (new_tvb == NULL) {
- new_tvb = tvb_new_composite();
- }
-
-
-
- if (new_tvb != NULL && chunk_size != 0) {
- tvbuff_t *chunk_tvb = NULL;
-
- chunk_tvb = tvb_new_subset(tvb, chunk_offset,
- chunk_size, datalen);
-
- tvb_composite_append(new_tvb, chunk_tvb);
-
- }
- */
-
- chunked_data_size += chunk_size;
-
- if (chunk_size != 0) {
- guint8 *raw_data = g_malloc(chunked_data_size);
- gint raw_len = 0;
-
- if (new_tvb != NULL) {
- raw_len = tvb_length_remaining(new_tvb, 0);
- tvb_memcpy(new_tvb, raw_data, 0, raw_len);
-
- tvb_free(new_tvb);
- }
-
- tvb_memcpy(tvb, (guint8 *)(raw_data + raw_len),
- chunk_offset, chunk_size);
-
- new_tvb = tvb_new_real_data(raw_data,
- chunked_data_size, chunked_data_size);
- tvb_set_free_cb(new_tvb, g_free);
-
- }
-
- if (subtree) {
- if (chunk_size == 0) {
- chunk_ti = proto_tree_add_text(subtree, tvb,
- offset,
- chunk_offset - offset + chunk_size + 2,
- "Data chunk (last chunk)");
- } else {
- chunk_ti = proto_tree_add_text(subtree, tvb,
- offset,
- chunk_offset - offset + chunk_size + 2,
- "Data chunk (%u octets)", chunk_size);
- }
-
- chunk_subtree = proto_item_add_subtree(chunk_ti,
- ett_http_chunk_data);
-
- proto_tree_add_text(chunk_subtree, tvb, offset,
- chunk_offset - offset, "Chunk size: %u octets",
- chunk_size);
-
- data_tvb = tvb_new_subset(tvb, chunk_offset, chunk_size,
- datalen);
-
-
- if (chunk_size > 0) {
- call_dissector(data_handle, data_tvb, pinfo,
- chunk_subtree);
- }
-
- proto_tree_add_text(chunk_subtree, tvb, chunk_offset +
- chunk_size, 2, "Chunk boundary");
- }
-
- chunks_decoded++;
- offset = chunk_offset + chunk_size + 2;
- datalen = tvb_reported_length_remaining(tvb, offset);
- }
-
- if (new_tvb != NULL) {
-
- /* Placeholder for the day that composite tvbuffer's will work.
- tvb_composite_finalize(new_tvb);
- / * tvb_set_reported_length(new_tvb, chunked_data_size); * /
- */
-
- /*
- * XXX - Don't free this, since the tvbuffer that was passed
- * may be used if the data spans multiple frames and reassembly
- * isn't enabled.
- *
- tvb_free(*tvb_ptr);
- */
- *tvb_ptr = new_tvb;
-
- } else {
- /*
- * We didn't create a new tvb, so don't allow sub dissectors
- * try to decode the non-existant entity body.
- */
- chunks_decoded = -1;
- }
-
- return chunks_decoded;
-
-}
-
-
-/*
- * XXX - this won't handle HTTP 0.9 replies, but they're all data
- * anyway.
- */
-static int
-is_http_request_or_reply(const gchar *data, int linelen, http_type_t *type,
- RequestDissector *req_dissector, int *req_strlen)
-{
- int isHttpRequestOrReply = FALSE;
- int prefix_len = 0;
-
- /*
- * From RFC 2774 - An HTTP Extension Framework
- *
- * Support the command prefix that identifies the presence of
- * a "mandatory" header.
- */
- if (linelen >= 2 && strncmp(data, "M-", 2) == 0) {
- data += 2;
- linelen -= 2;
- prefix_len = 2;
- }
-
- /*
- * From draft-cohen-gena-client-01.txt, available from the uPnP forum:
- * NOTIFY, SUBSCRIBE, UNSUBSCRIBE
- *
- * From draft-ietf-dasl-protocol-00.txt, a now vanished Microsoft draft:
- * SEARCH
- */
- if (linelen >= 5 && strncmp(data, "HTTP/", 5) == 0) {
- *type = HTTP_RESPONSE;
- isHttpRequestOrReply = TRUE; /* response */
- if (req_dissector) {
- *req_dissector = basic_response_dissector;
- *req_strlen = linelen - 5;
- }
- } else {
- const guchar * ptr = (const guchar *)data;
- int index = 0;
-
- /* Look for the space following the Method */
- while (index < linelen) {
- if (*ptr == ' ')
- break;
- else {
- ptr++;
- index++;
- }
- }
-
- /* Check the methods that have same length */
- switch (index) {
-
- case 3:
- if (strncmp(data, "GET", index) == 0 ||
- strncmp(data, "PUT", index) == 0) {
- *type = HTTP_REQUEST;
- isHttpRequestOrReply = TRUE;
- }
- else if (strncmp(data, "ICY", index) == 0) {
- *type = HTTP_RESPONSE;
- isHttpRequestOrReply = TRUE;
- }
- break;
-
- case 4:
- if (strncmp(data, "COPY", index) == 0 ||
- strncmp(data, "HEAD", index) == 0 ||
- strncmp(data, "LOCK", index) == 0 ||
- strncmp(data, "MOVE", index) == 0 ||
- strncmp(data, "POLL", index) == 0 ||
- strncmp(data, "POST", index) == 0) {
- *type = HTTP_REQUEST;
- isHttpRequestOrReply = TRUE;
- }
- break;
-
- case 5:
- if (strncmp(data, "BCOPY", index) == 0 ||
- strncmp(data, "BMOVE", index) == 0 ||
- strncmp(data, "MKCOL", index) == 0 ||
- strncmp(data, "TRACE", index) == 0) {
- *type = HTTP_REQUEST;
- isHttpRequestOrReply = TRUE;
- }
- break;
-
- case 6:
- if (strncmp(data, "DELETE", index) == 0 ||
- strncmp(data, "SEARCH", index) == 0 ||
- strncmp(data, "UNLOCK", index) == 0) {
- *type = HTTP_REQUEST;
- isHttpRequestOrReply = TRUE;
- }
- else if (strncmp(data, "NOTIFY", index) == 0) {
- *type = HTTP_NOTIFICATION;
- isHttpRequestOrReply = TRUE;
- }
- break;
-
- case 7:
- if (strncmp(data, "BDELETE", index) == 0 ||
- strncmp(data, "CONNECT", index) == 0 ||
- strncmp(data, "OPTIONS", index) == 0) {
- *type = HTTP_REQUEST;
- isHttpRequestOrReply = TRUE;
- }
- break;
-
- case 8:
- if (strncmp(data, "PROPFIND", index) == 0) {
- *type = HTTP_REQUEST;
- isHttpRequestOrReply = TRUE;
- }
- break;
-
- case 9:
- if (strncmp(data, "SUBSCRIBE", index) == 0) {
- *type = HTTP_NOTIFICATION;
- isHttpRequestOrReply = TRUE;
- } else if (strncmp(data, "PROPPATCH", index) == 0 ||
- strncmp(data, "BPROPFIND", index) == 0) {
- *type = HTTP_REQUEST;
- isHttpRequestOrReply = TRUE;
- }
- break;
-
- case 10:
- if (strncmp(data, "BPROPPATCH", index) == 0) {
- *type = HTTP_REQUEST;
- isHttpRequestOrReply = TRUE;
- }
- break;
-
- case 11:
- if (strncmp(data, "UNSUBSCRIBE", index) == 0) {
- *type = HTTP_NOTIFICATION;
- isHttpRequestOrReply = TRUE;
- }
- break;
-
- default:
- break;
- }
-
- if (isHttpRequestOrReply && req_dissector) {
- *req_dissector = basic_request_dissector;
- *req_strlen = index + prefix_len;
- }
- if (isHttpRequestOrReply && req_dissector) {
- if (!stat_info->request_method)
- stat_info->request_method = g_malloc( index+1 );
- strncpy( stat_info->request_method, data, index);
- stat_info->request_method[index] = '\0';
- }
- }
-
- return isHttpRequestOrReply;
-}
-
-/*
- * Process headers.
- */
-typedef struct {
- char *name;
- gint *hf;
- int special;
-} header_info;
-
-#define HDR_NO_SPECIAL 0
-#define HDR_AUTHORIZATION 1
-#define HDR_AUTHENTICATE 2
-#define HDR_CONTENT_TYPE 3
-#define HDR_CONTENT_LENGTH 4
-#define HDR_CONTENT_ENCODING 5
-#define HDR_TRANSFER_ENCODING 6
-
-static const header_info headers[] = {
- { "Authorization", &hf_http_authorization, HDR_AUTHORIZATION },
- { "Proxy-Authorization", &hf_http_proxy_authorization, HDR_AUTHORIZATION },
- { "Proxy-Authenticate", &hf_http_proxy_authenticate, HDR_AUTHENTICATE },
- { "WWW-Authenticate", &hf_http_www_authenticate, HDR_AUTHENTICATE },
- { "Content-Type", &hf_http_content_type, HDR_CONTENT_TYPE },
- { "Content-Length", &hf_http_content_length, HDR_CONTENT_LENGTH },
- { "Content-Encoding", &hf_http_content_encoding, HDR_CONTENT_ENCODING },
- { "Transfer-Encoding", &hf_http_transfer_encoding, HDR_TRANSFER_ENCODING },
-};
-
-static void
-process_header(tvbuff_t *tvb, int offset, int next_offset,
- const guchar *line, int linelen, int colon_offset,
- packet_info *pinfo, proto_tree *tree, headers_t *eh_ptr)
-{
- int len;
- int line_end_offset;
- int header_len;
- gint hf_index;
- guchar c;
- int value_offset;
- int value_len;
- char *value;
- char *p;
- guchar *up;
- proto_item *hdr_item;
- int i;
-
- len = next_offset - offset;
- line_end_offset = offset + linelen;
- header_len = colon_offset - offset;
- hf_index = find_header_hf_value(tvb, offset, header_len);
-
- if (hf_index == -1) {
- /*
- * Not a header we know anything about. Just put it into
- * the tree as text.
- */
- if (tree) {
- proto_tree_add_text(tree, tvb, offset, len,
- "%s", format_text(line, len));
- }
- } else {
- /*
- * Skip whitespace after the colon.
- */
- value_offset = colon_offset + 1;
- while (value_offset < line_end_offset
- && ((c = line[value_offset - offset]) == ' ' || c == '\t'))
- value_offset++;
-
- /*
- * Fetch the value.
- */
- value_len = line_end_offset - value_offset;
- value = g_malloc(value_len + 1);
- memcpy(value, &line[value_offset - offset], value_len);
- value[value_len] = '\0';
- CLEANUP_PUSH(g_free, value);
-
- /*
- * Add it to the protocol tree as a particular field,
- * but display the line as is.
- */
- if (tree) {
- hdr_item = proto_tree_add_string_format(tree,
- *headers[hf_index].hf, tvb, offset, len,
- value, "%s", format_text(line, len));
- } else
- hdr_item = NULL;
-
- /*
- * Do any special processing that particular headers
- * require.
- */
- switch (headers[hf_index].special) {
-
- case HDR_AUTHORIZATION:
- if (check_auth_ntlmssp(hdr_item, tvb, pinfo, value))
- break; /* dissected NTLMSSP */
- check_auth_basic(hdr_item, tvb, value);
- break;
-
- case HDR_AUTHENTICATE:
- check_auth_ntlmssp(hdr_item, tvb, pinfo, value);
- break;
-
- case HDR_CONTENT_TYPE:
- if (eh_ptr->content_type != NULL)
- g_free(eh_ptr->content_type);
- eh_ptr->content_type = g_malloc(value_len + 1);
- for (i = 0; i < value_len; i++) {
- c = value[i];
- if (c == ';' || isspace(c)) {
- /*
- * End of subtype - either
- * white space or a ";"
- * separating the subtype from
- * a parameter.
- */
- break;
- }
-
- /*
- * Map the character to lower case;
- * content types are case-insensitive.
- */
- eh_ptr->content_type[i] = tolower(c);
- }
- eh_ptr->content_type[i] = '\0';
- /*
- * Now find the start of the optional parameters;
- * skip the optional white space and the semicolon
- * if this has not been done before.
- */
- i++;
- while (i < value_len) {
- c = value[i];
- if (c == ';' || isspace(c))
- /* Skip till start of parameters */
- i++;
- else
- break;
- }
- if (i < value_len)
- eh_ptr->content_type_parameters = value + i;
- else
- eh_ptr->content_type_parameters = NULL;
- break;
-
- case HDR_CONTENT_LENGTH:
- eh_ptr->content_length = strtol(value, &p, 10);
- up = (guchar *)p;
- if (eh_ptr->content_length < 0 || p == value ||
- (*up != '\0' && !isspace(*up)))
- eh_ptr->content_length = -1; /* not valid */
- break;
-
- case HDR_CONTENT_ENCODING:
- if (eh_ptr->content_encoding != NULL)
- g_free(eh_ptr->content_encoding);
- eh_ptr->content_encoding = g_malloc(value_len + 1);
- memcpy(eh_ptr->content_encoding, value, value_len);
- eh_ptr->content_encoding[value_len] = '\0';
- break;
-
- case HDR_TRANSFER_ENCODING:
- if (eh_ptr->transfer_encoding != NULL)
- g_free(eh_ptr->transfer_encoding);
- eh_ptr->transfer_encoding = g_malloc(value_len + 1);
- memcpy(eh_ptr->transfer_encoding, value, value_len);
- eh_ptr->transfer_encoding[value_len] = '\0';
- break;
- }
-
- /*
- * Free the value, by calling and popping the cleanup
- * handler for it.
- */
- CLEANUP_CALL_AND_POP;
- }
-}
-
-/* Returns index of header tag in headers */
-static gint
-find_header_hf_value(tvbuff_t *tvb, int offset, guint header_len)
-{
- guint i;
-
- for (i = 0; i < array_length(headers); i++) {
- if (header_len == strlen(headers[i].name) &&
- tvb_strncaseeql(tvb, offset,
- headers[i].name, header_len) == 0)
- return i;
- }
-
- return -1;
-}
-
-/*
- * Dissect Microsoft's abomination called NTLMSSP over HTTP.
- */
-static gboolean
-check_auth_ntlmssp(proto_item *hdr_item, tvbuff_t *tvb, packet_info *pinfo,
- gchar *value)
-{
- static const char *ntlm_headers[] = {
- "NTLM ",
- "Negotiate ",
- NULL
- };
- const char **header;
- size_t hdrlen;
- proto_tree *hdr_tree;
-
- /*
- * Check for NTLM credentials and challenge; those can
- * occur with WWW-Authenticate.
- */
- for (header = &ntlm_headers[0]; *header != NULL; header++) {
- hdrlen = strlen(*header);
- if (strncmp(value, *header, hdrlen) == 0) {
- if (hdr_item != NULL) {
- hdr_tree = proto_item_add_subtree(hdr_item,
- ett_http_ntlmssp);
- } else
- hdr_tree = NULL;
- value += hdrlen;
- dissect_http_ntlmssp(tvb, pinfo, hdr_tree, value);
- return TRUE;
- }
- }
- return FALSE;
-}
-
-/*
- * Dissect HTTP Basic authorization.
- */
-static gboolean
-check_auth_basic(proto_item *hdr_item, tvbuff_t *tvb, gchar *value)
-{
- static const char *basic_headers[] = {
- "Basic ",
- NULL
- };
- const char **header;
- size_t hdrlen;
- proto_tree *hdr_tree;
- size_t len;
-
- for (header = &basic_headers[0]; *header != NULL; header++) {
- hdrlen = strlen(*header);
- if (strncmp(value, *header, hdrlen) == 0) {
- if (hdr_item != NULL) {
- hdr_tree = proto_item_add_subtree(hdr_item,
- ett_http_ntlmssp);
- } else
- hdr_tree = NULL;
- value += hdrlen;
-
- len = epan_base64_decode(value);
- value[len] = '\0';
- proto_tree_add_string(hdr_tree, hf_http_basic, tvb,
- 0, 0, value);
-
- return TRUE;
- }
- }
- return FALSE;
-}
-
-static void
-dissect_http(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
-{
- int offset = 0;
- int len;
-
- while (tvb_reported_length_remaining(tvb, offset) != 0) {
- len = dissect_http_message(tvb, offset, pinfo, tree);
- if (len == -1)
- break;
- offset += len;
-
- /*
- * OK, we've set the Protocol and Info columns for the
- * first HTTP message; make the columns non-writable,
- * so that we don't change it for subsequent HTTP messages.
- */
- col_set_writable(pinfo->cinfo, FALSE);
- }
-}
-
-static void
-dissect_http_udp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
-{
- dissect_http_message(tvb, 0, pinfo, tree);
-}
-
-void
-proto_register_http(void)
-{
- static hf_register_info hf[] = {
- { &hf_http_notification,
- { "Notification", "http.notification",
- FT_BOOLEAN, BASE_NONE, NULL, 0x0,
- "TRUE if HTTP notification", HFILL }},
- { &hf_http_response,
- { "Response", "http.response",
- FT_BOOLEAN, BASE_NONE, NULL, 0x0,
- "TRUE if HTTP response", HFILL }},
- { &hf_http_request,
- { "Request", "http.request",
- FT_BOOLEAN, BASE_NONE, NULL, 0x0,
- "TRUE if HTTP request", HFILL }},
- { &hf_http_basic,
- { "Credentials", "http.authbasic",
- FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }},
- { &hf_http_request_method,
- { "Request Method", "http.request.method",
- FT_STRING, BASE_NONE, NULL, 0x0,
- "HTTP Request Method", HFILL }},
- { &hf_http_response_code,
- { "Response Code", "http.response.code",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "HTTP Response Code", HFILL }},
- { &hf_http_authorization,
- { "Authorization", "http.authorization",
- FT_STRING, BASE_NONE, NULL, 0x0,
- "HTTP Authorization header", HFILL }},
- { &hf_http_proxy_authenticate,
- { "Proxy-Authenticate", "http.proxy_authenticate",
- FT_STRING, BASE_NONE, NULL, 0x0,
- "HTTP Proxy-Authenticate header", HFILL }},
- { &hf_http_proxy_authorization,
- { "Proxy-Authorization", "http.proxy_authorization",
- FT_STRING, BASE_NONE, NULL, 0x0,
- "HTTP Proxy-Authorization header", HFILL }},
- { &hf_http_www_authenticate,
- { "WWW-Authenticate", "http.www_authenticate",
- FT_STRING, BASE_NONE, NULL, 0x0,
- "HTTP WWW-Authenticate header", HFILL }},
- { &hf_http_content_type,
- { "Content-Type", "http.content_type",
- FT_STRING, BASE_NONE, NULL, 0x0,
- "HTTP Content-Type header", HFILL }},
- { &hf_http_content_length,
- { "Content-Length", "http.content_length",
- FT_STRING, BASE_NONE, NULL, 0x0,
- "HTTP Content-Length header", HFILL }},
- { &hf_http_content_encoding,
- { "Content-Encoding", "http.content_encoding",
- FT_STRING, BASE_NONE, NULL, 0x0,
- "HTTP Content-Encoding header", HFILL }},
- { &hf_http_transfer_encoding,
- { "Transfer-Encoding", "http.transfer_encoding",
- FT_STRING, BASE_NONE, NULL, 0x0,
- "HTTP Transfer-Encoding header", HFILL }},
- };
- static gint *ett[] = {
- &ett_http,
- &ett_http_ntlmssp,
- &ett_http_request,
- &ett_http_chunked_response,
- &ett_http_chunk_data,
- &ett_http_encoded_entity,
- };
- module_t *http_module;
-
- proto_http = proto_register_protocol("Hypertext Transfer Protocol",
- "HTTP", "http");
- proto_register_field_array(proto_http, hf, array_length(hf));
- proto_register_subtree_array(ett, array_length(ett));
- http_module = prefs_register_protocol(proto_http, NULL);
- prefs_register_bool_preference(http_module, "desegment_headers",
- "Desegment all HTTP headers spanning multiple TCP segments",
- "Whether the HTTP dissector should desegment all headers "
- "of a request spanning multiple TCP segments",
- &http_desegment_headers);
- prefs_register_bool_preference(http_module, "desegment_body",
- "Desegment HTTP bodies spanning multiple TCP segments",
- "Whether the HTTP dissector should use the "
- "\"Content-length:\" value, if present, to desegment "
- "the body of a request spanning multiple TCP segments, "
- "and desegment chunked data spanning multiple TCP segments",
- &http_desegment_body);
- prefs_register_bool_preference(http_module, "dechunk_body",
- "Reassemble chunked transfer-coded bodies",
- "Whether to reassemble bodies of entities that are transfered "
- "using the \"Transfer-Encoding: chunked\" method",
- &http_dechunk_body);
-#ifdef HAVE_LIBZ
- prefs_register_bool_preference(http_module, "decompress_body",
- "Uncompress entity bodies",
- "Whether to uncompress entity bodies that are compressed "
- "using \"Content-Encoding: \"",
- &http_decompress_body);
-#endif
-
- http_handle = create_dissector_handle(dissect_http, proto_http);
-
- /*
- * Dissectors shouldn't register themselves in this table;
- * instead, they should call "http_dissector_add()", and
- * we'll register the port number they specify as a port
- * for HTTP, and register them in our subdissector table.
- *
- * This only works for protocols such as IPP that run over
- * HTTP on a specific non-HTTP port.
- */
- port_subdissector_table = register_dissector_table("http.port",
- "TCP port for protocols using HTTP", FT_UINT16, BASE_DEC);
-
- /*
- * Dissectors can register themselves in this table.
- * It's just "media_type", not "http.content_type", because
- * it's an Internet media type, usable by other protocols as well.
- */
- media_type_subdissector_table =
- register_dissector_table("media_type",
- "Internet media type", FT_STRING, BASE_NONE);
-
- /*
- * Heuristic dissectors SHOULD register themselves in
- * this table using the standard heur_dissector_add()
- * function.
- */
- register_heur_dissector_list("http", &heur_subdissector_list);
-
- /*
- * Register for tapping
- */
- http_tap = register_tap("http");
-}
-
-/*
- * Called by dissectors for protocols that run atop HTTP/TCP.
- */
-void
-http_dissector_add(guint32 port, dissector_handle_t handle)
-{
- /*
- * Register ourselves as the handler for that port number
- * over TCP.
- */
- dissector_add("tcp.port", port, http_handle);
-
- /*
- * And register them in *our* table for that port.
- */
- dissector_add("http.port", port, handle);
-}
-
-void
-proto_reg_handoff_http(void)
-{
- dissector_handle_t http_udp_handle;
-
- data_handle = find_dissector("data");
- media_handle = find_dissector("media");
-
- dissector_add("tcp.port", TCP_PORT_HTTP, http_handle);
- dissector_add("tcp.port", TCP_ALT_PORT_HTTP, http_handle);
- dissector_add("tcp.port", TCP_PORT_PROXY_HTTP, http_handle);
- dissector_add("tcp.port", TCP_PORT_PROXY_ADMIN_HTTP, http_handle);
- dissector_add("tcp.port", TCP_PORT_HKP, http_handle);
-
- /*
- * XXX - is there anything to dissect in the body of an SSDP
- * request or reply? I.e., should there be an SSDP dissector?
- */
- dissector_add("tcp.port", TCP_PORT_SSDP, http_handle);
- http_udp_handle = create_dissector_handle(dissect_http_udp, proto_http);
- dissector_add("udp.port", UDP_PORT_SSDP, http_udp_handle);
-
- ntlmssp_handle = find_dissector("ntlmssp");
-}
-
-/*
- * Content-Type: message/http
- */
-
-static gint proto_message_http = -1;
-static gint ett_message_http = -1;
-static dissector_handle_t message_http_handle;
-
-static void
-dissect_message_http(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
-{
- proto_tree *subtree;
- proto_item *ti;
- gint offset = 0, next_offset;
- gint len;
-
- if (check_col(pinfo->cinfo, COL_INFO))
- col_append_str(pinfo->cinfo, COL_INFO, " (message/http)");
- if (tree) {
- ti = proto_tree_add_item(tree, proto_message_http,
- tvb, 0, -1, FALSE);
- subtree = proto_item_add_subtree(ti, ett_message_http);
- while (tvb_reported_length_remaining(tvb, offset) != 0) {
- len = tvb_find_line_end(tvb, offset,
- tvb_ensure_length_remaining(tvb, offset),
- &next_offset, FALSE);
- if (len == -1)
- break;
- proto_tree_add_text(subtree, tvb, offset, next_offset - offset,
- "%s", tvb_format_text(tvb, offset, len));
- offset = next_offset;
- }
- }
-}
-
-void
-proto_register_message_http(void)
-{
- static gint *ett[] = {
- &ett_message_http,
- };
-
- proto_message_http = proto_register_protocol(
- "Media Type: message/http",
- "message/http",
- "message-http"
- );
- proto_register_subtree_array(ett, array_length(ett));
- message_http_handle = create_dissector_handle(dissect_message_http,
- proto_message_http);
-}
-
-void
-proto_reg_handoff_message_http(void)
-{
- message_http_handle = create_dissector_handle(dissect_message_http,
- proto_message_http);
-
- dissector_add_string("media_type", "message/http", message_http_handle);
-}