2009-01-29 17:47:02 +01:00
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/*
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* UPnP WPS Device - Web connections
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* Copyright (c) 2000-2003 Intel Corporation
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* Copyright (c) 2006-2007 Sony Corporation
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* Copyright (c) 2008-2009 Atheros Communications
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* Copyright (c) 2009, Jouni Malinen <j@w1.fi>
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*
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* See wps_upnp.c for more details on licensing and code history.
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*/
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#include "includes.h"
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#include <fcntl.h>
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#include "common.h"
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#include "base64.h"
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#include "eloop.h"
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#include "uuid.h"
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#include "httpread.h"
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#include "wps_i.h"
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#include "wps_upnp.h"
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#include "wps_upnp_i.h"
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/***************************************************************************
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* Web connections (we serve pages of info about ourselves, handle
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* requests, etc. etc.).
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**************************************************************************/
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#define WEB_CONNECTION_TIMEOUT_SEC 30 /* Drop web connection after t.o. */
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#define WEB_CONNECTION_MAX_READ 8000 /* Max we'll read for TCP request */
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#define MAX_WEB_CONNECTIONS 10 /* max simultaneous web connects */
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static const char *urn_wfawlanconfig =
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"urn:schemas-wifialliance-org:service:WFAWLANConfig:1";
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static const char *http_server_hdr =
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"Server: unspecified, UPnP/1.0, unspecified\r\n";
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static const char *http_connection_close =
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"Connection: close\r\n";
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/*
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* Incoming web connections are recorded in this struct.
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* A web connection is a TCP connection to us, the server;
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* it is called a "web connection" because we use http and serve
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* data that looks like web pages.
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* State information is need to track the connection until we figure
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* out what they want and what we want to do about it.
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*/
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struct web_connection {
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/* double linked list */
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struct web_connection *next;
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struct web_connection *prev;
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struct upnp_wps_device_sm *sm; /* parent */
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int sd; /* socket to read from */
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2009-02-06 18:04:55 +01:00
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struct sockaddr_in cli_addr;
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2009-01-29 17:47:02 +01:00
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int sd_registered; /* nonzero if we must cancel registration */
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struct httpread *hread; /* state machine for reading socket */
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int n_rcvd_data; /* how much data read so far */
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int done; /* internal flag, set when we've finished */
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};
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/*
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* XML parsing and formatting
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*
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* XML is a markup language based on unicode; usually (and in our case,
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* always!) based on utf-8. utf-8 uses a variable number of bytes per
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* character. utf-8 has the advantage that all non-ASCII unicode characters are
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* represented by sequences of non-ascii (high bit set) bytes, whereas ASCII
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* characters are single ascii bytes, thus we can use typical text processing.
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*
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* (One other interesting thing about utf-8 is that it is possible to look at
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* any random byte and determine if it is the first byte of a character as
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* versus a continuation byte).
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*
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* The base syntax of XML uses a few ASCII punctionation characters; any
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* characters that would appear in the payload data are rewritten using
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* sequences, e.g., & for ampersand(&) and < for left angle bracket (<).
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* Five such escapes total (more can be defined but that does not apply to our
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* case). Thus we can safely parse for angle brackets etc.
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*
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* XML describes tree structures of tagged data, with each element beginning
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* with an opening tag <label> and ending with a closing tag </label> with
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* matching label. (There is also a self-closing tag <label/> which is supposed
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* to be equivalent to <label></label>, i.e., no payload, but we are unlikely
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* to see it for our purpose).
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*
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* Actually the opening tags are a little more complicated because they can
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* contain "attributes" after the label (delimited by ascii space or tab chars)
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* of the form attribute_label="value" or attribute_label='value'; as it turns
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* out we do not have to read any of these attributes, just ignore them.
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*
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* Labels are any sequence of chars other than space, tab, right angle bracket
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* (and ?), but may have an inner structure of <namespace><colon><plain_label>.
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* As it turns out, we can ignore the namespaces, in fact we can ignore the
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* entire tree hierarchy, because the plain labels we are looking for will be
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* unique (not in general, but for this application). We do however have to be
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* careful to skip over the namespaces.
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*
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* In generating XML we have to be more careful, but that is easy because
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* everything we do is pretty canned. The only real care to take is to escape
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* any special chars in our payload.
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*/
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/**
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* xml_next_tag - Advance to next tag
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* @in: Input
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* @out: OUT: start of tag just after '<'
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* @out_tagname: OUT: start of name of tag, skipping namespace
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* @end: OUT: one after tag
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* Returns: 0 on success, 1 on failure
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*
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* A tag has form:
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* <left angle bracket><...><right angle bracket>
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* Within the angle brackets, there is an optional leading forward slash (which
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* makes the tag an ending tag), then an optional leading label (followed by
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* colon) and then the tag name itself.
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*
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* Note that angle brackets present in the original data must have been encoded
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* as < and > so they will not trouble us.
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*/
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static int xml_next_tag(char *in, char **out, char **out_tagname,
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char **end)
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{
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while (*in && *in != '<')
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in++;
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if (*in != '<')
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return 1;
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*out = ++in;
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if (*in == '/')
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in++;
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*out_tagname = in; /* maybe */
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while (isalnum(*in) || *in == '-')
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in++;
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if (*in == ':')
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*out_tagname = ++in;
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while (*in && *in != '>')
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in++;
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if (*in != '>')
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return 1;
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*end = ++in;
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return 0;
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}
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/* xml_data_encode -- format data for xml file, escaping special characters.
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*
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* Note that we assume we are using utf8 both as input and as output!
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* In utf8, characters may be classed as follows:
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* 0xxxxxxx(2) -- 1 byte ascii char
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* 11xxxxxx(2) -- 1st byte of multi-byte char w/ unicode value >= 0x80
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* 110xxxxx(2) -- 1st byte of 2 byte sequence (5 payload bits here)
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* 1110xxxx(2) -- 1st byte of 3 byte sequence (4 payload bits here)
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* 11110xxx(2) -- 1st byte of 4 byte sequence (3 payload bits here)
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* 10xxxxxx(2) -- extension byte (6 payload bits per byte)
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* Some values implied by the above are however illegal because they
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* do not represent unicode chars or are not the shortest encoding.
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* Actually, we can almost entirely ignore the above and just do
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* text processing same as for ascii text.
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*
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* XML is written with arbitrary unicode characters, except that five
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* characters have special meaning and so must be escaped where they
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* appear in payload data... which we do here.
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*/
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static void xml_data_encode(struct wpabuf *buf, const char *data, int len)
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{
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int i;
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for (i = 0; i < len; i++) {
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u8 c = ((u8 *) data)[i];
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if (c == '<') {
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wpabuf_put_str(buf, "<");
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continue;
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}
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if (c == '>') {
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wpabuf_put_str(buf, ">");
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continue;
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}
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if (c == '&') {
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wpabuf_put_str(buf, "&");
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continue;
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}
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if (c == '\'') {
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wpabuf_put_str(buf, "'");
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continue;
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}
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if (c == '"') {
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wpabuf_put_str(buf, """);
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continue;
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}
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/*
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* We could try to represent control characters using the
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* sequence: &#x; where x is replaced by a hex numeral, but not
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* clear why we would do this.
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*/
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wpabuf_put_u8(buf, c);
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}
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}
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/* xml_add_tagged_data -- format tagged data as a new xml line.
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*
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* tag must not have any special chars.
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* data may have special chars, which are escaped.
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*/
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static void xml_add_tagged_data(struct wpabuf *buf, const char *tag,
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const char *data)
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{
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wpabuf_printf(buf, "<%s>", tag);
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xml_data_encode(buf, data, os_strlen(data));
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wpabuf_printf(buf, "</%s>\n", tag);
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}
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/* A POST body looks something like (per upnp spec):
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* <?xml version="1.0"?>
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* <s:Envelope
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* xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"
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* s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
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* <s:Body>
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* <u:actionName xmlns:u="urn:schemas-upnp-org:service:serviceType:v">
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* <argumentName>in arg value</argumentName>
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* other in args and their values go here, if any
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* </u:actionName>
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* </s:Body>
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* </s:Envelope>
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*
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* where :
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* s: might be some other namespace name followed by colon
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* u: might be some other namespace name followed by colon
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* actionName will be replaced according to action requested
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* schema following actionName will be WFA scheme instead
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* argumentName will be actual argument name
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* (in arg value) will be actual argument value
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*/
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static int
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upnp_get_first_document_item(char *doc, const char *item, char **value)
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{
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const char *match = item;
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int match_len = os_strlen(item);
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char *tag;
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char *tagname;
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char *end;
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*value = NULL; /* default, bad */
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/*
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* This is crude: ignore any possible tag name conflicts and go right
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* to the first tag of this name. This should be ok for the limited
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* domain of UPnP messages.
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*/
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for (;;) {
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if (xml_next_tag(doc, &tag, &tagname, &end))
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return 1;
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doc = end;
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if (!os_strncasecmp(tagname, match, match_len) &&
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*tag != '/' &&
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(tagname[match_len] == '>' ||
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2009-02-03 12:25:49 +01:00
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!isgraph(tagname[match_len]))) {
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2009-01-29 17:47:02 +01:00
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break;
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}
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}
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end = doc;
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while (*end && *end != '<')
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end++;
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*value = os_zalloc(1 + (end - doc));
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if (*value == NULL)
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return 1;
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os_memcpy(*value, doc, end - doc);
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return 0;
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}
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/*
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* "Files" that we serve via HTTP. The format of these files is given by
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* WFA WPS specifications. Extra white space has been removed to save space.
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*/
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static const char wps_scpd_xml[] =
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"<?xml version=\"1.0\"?>\n"
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"<scpd xmlns=\"urn:schemas-upnp-org:service-1-0\">\n"
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"<specVersion><major>1</major><minor>0</minor></specVersion>\n"
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"<actionList>\n"
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"<action>\n"
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"<name>GetDeviceInfo</name>\n"
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"<argumentList>\n"
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"<argument>\n"
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"<name>NewDeviceInfo</name>\n"
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"<direction>out</direction>\n"
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"<relatedStateVariable>DeviceInfo</relatedStateVariable>\n"
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"</argument>\n"
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"</argumentList>\n"
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"</action>\n"
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"<action>\n"
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"<name>PutMessage</name>\n"
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"<argumentList>\n"
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"<argument>\n"
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"<name>NewInMessage</name>\n"
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"<direction>in</direction>\n"
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"<relatedStateVariable>InMessage</relatedStateVariable>\n"
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"</argument>\n"
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"<argument>\n"
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"<name>NewOutMessage</name>\n"
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"<direction>out</direction>\n"
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"<relatedStateVariable>OutMessage</relatedStateVariable>\n"
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"</argument>\n"
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"</argumentList>\n"
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"</action>\n"
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"<action>\n"
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"<name>GetAPSettings</name>\n"
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"<argumentList>\n"
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"<argument>\n"
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"<name>NewMessage</name>\n"
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"<direction>in</direction>\n"
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"<relatedStateVariable>Message</relatedStateVariable>\n"
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"</argument>\n"
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"<argument>\n"
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"<name>NewAPSettings</name>\n"
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"<direction>out</direction>\n"
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"<relatedStateVariable>APSettings</relatedStateVariable>\n"
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"</argument>\n"
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"</argumentList>\n"
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"</action>\n"
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"<action>\n"
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"<name>SetAPSettings</name>\n"
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"<argumentList>\n"
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"<argument>\n"
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"<name>APSettings</name>\n"
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"<direction>in</direction>\n"
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"<relatedStateVariable>APSettings</relatedStateVariable>\n"
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"</argument>\n"
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"</argumentList>\n"
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"</action>\n"
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"<action>\n"
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"<name>DelAPSettings</name>\n"
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"<argumentList>\n"
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"<argument>\n"
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"<name>NewAPSettings</name>\n"
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"<direction>in</direction>\n"
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"<relatedStateVariable>APSettings</relatedStateVariable>\n"
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"</argument>\n"
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"</argumentList>\n"
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"</action>\n"
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"<action>\n"
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"<name>GetSTASettings</name>\n"
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"<argumentList>\n"
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"<argument>\n"
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"<name>NewMessage</name>\n"
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"<direction>in</direction>\n"
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"<relatedStateVariable>Message</relatedStateVariable>\n"
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"</argument>\n"
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"<argument>\n"
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"<name>NewSTASettings</name>\n"
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"<direction>out</direction>\n"
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"<relatedStateVariable>STASettings</relatedStateVariable>\n"
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"</argument>\n"
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"</argumentList>\n"
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"</action>\n"
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"<action>\n"
|
|
|
|
"<name>SetSTASettings</name>\n"
|
|
|
|
"<argumentList>\n"
|
|
|
|
"<argument>\n"
|
|
|
|
"<name>NewSTASettings</name>\n"
|
|
|
|
"<direction>out</direction>\n"
|
|
|
|
"<relatedStateVariable>STASettings</relatedStateVariable>\n"
|
|
|
|
"</argument>\n"
|
|
|
|
"</argumentList>\n"
|
|
|
|
"</action>\n"
|
|
|
|
"<action>\n"
|
|
|
|
"<name>DelSTASettings</name>\n"
|
|
|
|
"<argumentList>\n"
|
|
|
|
"<argument>\n"
|
|
|
|
"<name>NewSTASettings</name>\n"
|
|
|
|
"<direction>in</direction>\n"
|
|
|
|
"<relatedStateVariable>STASettings</relatedStateVariable>\n"
|
|
|
|
"</argument>\n"
|
|
|
|
"</argumentList>\n"
|
|
|
|
"</action>\n"
|
|
|
|
"<action>\n"
|
|
|
|
"<name>PutWLANResponse</name>\n"
|
|
|
|
"<argumentList>\n"
|
|
|
|
"<argument>\n"
|
|
|
|
"<name>NewMessage</name>\n"
|
|
|
|
"<direction>in</direction>\n"
|
|
|
|
"<relatedStateVariable>Message</relatedStateVariable>\n"
|
|
|
|
"</argument>\n"
|
|
|
|
"<argument>\n"
|
|
|
|
"<name>NewWLANEventType</name>\n"
|
|
|
|
"<direction>in</direction>\n"
|
|
|
|
"<relatedStateVariable>WLANEventType</relatedStateVariable>\n"
|
|
|
|
"</argument>\n"
|
|
|
|
"<argument>\n"
|
|
|
|
"<name>NewWLANEventMAC</name>\n"
|
|
|
|
"<direction>in</direction>\n"
|
|
|
|
"<relatedStateVariable>WLANEventMAC</relatedStateVariable>\n"
|
|
|
|
"</argument>\n"
|
|
|
|
"</argumentList>\n"
|
|
|
|
"</action>\n"
|
|
|
|
"<action>\n"
|
|
|
|
"<name>SetSelectedRegistrar</name>\n"
|
|
|
|
"<argumentList>\n"
|
|
|
|
"<argument>\n"
|
|
|
|
"<name>NewMessage</name>\n"
|
|
|
|
"<direction>in</direction>\n"
|
|
|
|
"<relatedStateVariable>Message</relatedStateVariable>\n"
|
|
|
|
"</argument>\n"
|
|
|
|
"</argumentList>\n"
|
|
|
|
"</action>\n"
|
|
|
|
"<action>\n"
|
|
|
|
"<name>RebootAP</name>\n"
|
|
|
|
"<argumentList>\n"
|
|
|
|
"<argument>\n"
|
|
|
|
"<name>NewAPSettings</name>\n"
|
|
|
|
"<direction>in</direction>\n"
|
|
|
|
"<relatedStateVariable>APSettings</relatedStateVariable>\n"
|
|
|
|
"</argument>\n"
|
|
|
|
"</argumentList>\n"
|
|
|
|
"</action>\n"
|
|
|
|
"<action>\n"
|
|
|
|
"<name>ResetAP</name>\n"
|
|
|
|
"<argumentList>\n"
|
|
|
|
"<argument>\n"
|
|
|
|
"<name>NewMessage</name>\n"
|
|
|
|
"<direction>in</direction>\n"
|
|
|
|
"<relatedStateVariable>Message</relatedStateVariable>\n"
|
|
|
|
"</argument>\n"
|
|
|
|
"</argumentList>\n"
|
|
|
|
"</action>\n"
|
|
|
|
"<action>\n"
|
|
|
|
"<name>RebootSTA</name>\n"
|
|
|
|
"<argumentList>\n"
|
|
|
|
"<argument>\n"
|
|
|
|
"<name>NewSTASettings</name>\n"
|
|
|
|
"<direction>in</direction>\n"
|
|
|
|
"<relatedStateVariable>APSettings</relatedStateVariable>\n"
|
|
|
|
"</argument>\n"
|
|
|
|
"</argumentList>\n"
|
|
|
|
"</action>\n"
|
|
|
|
"<action>\n"
|
|
|
|
"<name>ResetSTA</name>\n"
|
|
|
|
"<argumentList>\n"
|
|
|
|
"<argument>\n"
|
|
|
|
"<name>NewMessage</name>\n"
|
|
|
|
"<direction>in</direction>\n"
|
|
|
|
"<relatedStateVariable>Message</relatedStateVariable>\n"
|
|
|
|
"</argument>\n"
|
|
|
|
"</argumentList>\n"
|
|
|
|
"</action>\n"
|
|
|
|
"</actionList>\n"
|
|
|
|
"<serviceStateTable>\n"
|
|
|
|
"<stateVariable sendEvents=\"no\">\n"
|
|
|
|
"<name>Message</name>\n"
|
|
|
|
"<dataType>bin.base64</dataType>\n"
|
|
|
|
"</stateVariable>\n"
|
|
|
|
"<stateVariable sendEvents=\"no\">\n"
|
|
|
|
"<name>InMessage</name>\n"
|
|
|
|
"<dataType>bin.base64</dataType>\n"
|
|
|
|
"</stateVariable>\n"
|
|
|
|
"<stateVariable sendEvents=\"no\">\n"
|
|
|
|
"<name>OutMessage</name>\n"
|
|
|
|
"<dataType>bin.base64</dataType>\n"
|
|
|
|
"</stateVariable>\n"
|
|
|
|
"<stateVariable sendEvents=\"no\">\n"
|
|
|
|
"<name>DeviceInfo</name>\n"
|
|
|
|
"<dataType>bin.base64</dataType>\n"
|
|
|
|
"</stateVariable>\n"
|
|
|
|
"<stateVariable sendEvents=\"no\">\n"
|
|
|
|
"<name>APSettings</name>\n"
|
|
|
|
"<dataType>bin.base64</dataType>\n"
|
|
|
|
"</stateVariable>\n"
|
|
|
|
"<stateVariable sendEvents=\"yes\">\n"
|
|
|
|
"<name>APStatus</name>\n"
|
|
|
|
"<dataType>ui1</dataType>\n"
|
|
|
|
"</stateVariable>\n"
|
|
|
|
"<stateVariable sendEvents=\"no\">\n"
|
|
|
|
"<name>STASettings</name>\n"
|
|
|
|
"<dataType>bin.base64</dataType>\n"
|
|
|
|
"</stateVariable>\n"
|
|
|
|
"<stateVariable sendEvents=\"yes\">\n"
|
|
|
|
"<name>STAStatus</name>\n"
|
|
|
|
"<dataType>ui1</dataType>\n"
|
|
|
|
"</stateVariable>\n"
|
|
|
|
"<stateVariable sendEvents=\"yes\">\n"
|
|
|
|
"<name>WLANEvent</name>\n"
|
|
|
|
"<dataType>bin.base64</dataType>\n"
|
|
|
|
"</stateVariable>\n"
|
|
|
|
"<stateVariable sendEvents=\"no\">\n"
|
|
|
|
"<name>WLANEventType</name>\n"
|
|
|
|
"<dataType>ui1</dataType>\n"
|
|
|
|
"</stateVariable>\n"
|
|
|
|
"<stateVariable sendEvents=\"no\">\n"
|
|
|
|
"<name>WLANEventMAC</name>\n"
|
|
|
|
"<dataType>string</dataType>\n"
|
|
|
|
"</stateVariable>\n"
|
|
|
|
"<stateVariable sendEvents=\"no\">\n"
|
|
|
|
"<name>WLANResponse</name>\n"
|
|
|
|
"<dataType>bin.base64</dataType>\n"
|
|
|
|
"</stateVariable>\n"
|
|
|
|
"</serviceStateTable>\n"
|
|
|
|
"</scpd>\n"
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
static const char *wps_device_xml_prefix =
|
|
|
|
"<?xml version=\"1.0\"?>\n"
|
|
|
|
"<root xmlns=\"urn:schemas-upnp-org:device-1-0\">\n"
|
|
|
|
"<specVersion>\n"
|
|
|
|
"<major>1</major>\n"
|
|
|
|
"<minor>0</minor>\n"
|
|
|
|
"</specVersion>\n"
|
|
|
|
"<device>\n"
|
|
|
|
"<deviceType>urn:schemas-wifialliance-org:device:WFADevice:1"
|
|
|
|
"</deviceType>\n";
|
|
|
|
|
|
|
|
static const char *wps_device_xml_postfix =
|
|
|
|
"<serviceList>\n"
|
|
|
|
"<service>\n"
|
|
|
|
"<serviceType>urn:schemas-wifialliance-org:service:WFAWLANConfig:1"
|
|
|
|
"</serviceType>\n"
|
|
|
|
"<serviceId>urn:wifialliance-org:serviceId:WFAWLANConfig1</serviceId>"
|
|
|
|
"\n"
|
|
|
|
"<SCPDURL>" UPNP_WPS_SCPD_XML_FILE "</SCPDURL>\n"
|
|
|
|
"<controlURL>" UPNP_WPS_DEVICE_CONTROL_FILE "</controlURL>\n"
|
|
|
|
"<eventSubURL>" UPNP_WPS_DEVICE_EVENT_FILE "</eventSubURL>\n"
|
|
|
|
"</service>\n"
|
|
|
|
"</serviceList>\n"
|
|
|
|
"</device>\n"
|
|
|
|
"</root>\n";
|
|
|
|
|
|
|
|
|
|
|
|
/* format_wps_device_xml -- produce content of "file" wps_device.xml
|
|
|
|
* (UPNP_WPS_DEVICE_XML_FILE)
|
|
|
|
*/
|
|
|
|
static void format_wps_device_xml(struct upnp_wps_device_sm *sm,
|
|
|
|
struct wpabuf *buf)
|
|
|
|
{
|
|
|
|
const char *s;
|
|
|
|
char uuid_string[80];
|
|
|
|
|
|
|
|
wpabuf_put_str(buf, wps_device_xml_prefix);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Add required fields with default values if not configured. Add
|
|
|
|
* optional and recommended fields only if configured.
|
|
|
|
*/
|
|
|
|
s = sm->wps->friendly_name;
|
|
|
|
s = ((s && *s) ? s : "WPS Access Point");
|
|
|
|
xml_add_tagged_data(buf, "friendlyName", s);
|
|
|
|
|
|
|
|
s = sm->wps->dev.manufacturer;
|
|
|
|
s = ((s && *s) ? s : "");
|
|
|
|
xml_add_tagged_data(buf, "manufacturer", s);
|
|
|
|
|
|
|
|
if (sm->wps->manufacturer_url)
|
|
|
|
xml_add_tagged_data(buf, "manufacturerURL",
|
|
|
|
sm->wps->manufacturer_url);
|
|
|
|
|
|
|
|
if (sm->wps->model_description)
|
|
|
|
xml_add_tagged_data(buf, "modelDescription",
|
|
|
|
sm->wps->model_description);
|
|
|
|
|
|
|
|
s = sm->wps->dev.model_name;
|
|
|
|
s = ((s && *s) ? s : "");
|
|
|
|
xml_add_tagged_data(buf, "modelName", s);
|
|
|
|
|
|
|
|
if (sm->wps->dev.model_number)
|
|
|
|
xml_add_tagged_data(buf, "modelNumber",
|
|
|
|
sm->wps->dev.model_number);
|
|
|
|
|
|
|
|
if (sm->wps->model_url)
|
|
|
|
xml_add_tagged_data(buf, "modelURL", sm->wps->model_url);
|
|
|
|
|
|
|
|
if (sm->wps->dev.serial_number)
|
|
|
|
xml_add_tagged_data(buf, "serialNumber",
|
|
|
|
sm->wps->dev.serial_number);
|
|
|
|
|
|
|
|
uuid_bin2str(sm->wps->uuid, uuid_string, sizeof(uuid_string));
|
|
|
|
s = uuid_string;
|
|
|
|
/* Need "uuid:" prefix, thus we can't use xml_add_tagged_data()
|
|
|
|
* easily...
|
|
|
|
*/
|
|
|
|
wpabuf_put_str(buf, "<UDN>uuid:");
|
|
|
|
xml_data_encode(buf, s, os_strlen(s));
|
|
|
|
wpabuf_put_str(buf, "</UDN>\n");
|
|
|
|
|
|
|
|
if (sm->wps->upc)
|
|
|
|
xml_add_tagged_data(buf, "UPC", sm->wps->upc);
|
|
|
|
|
|
|
|
wpabuf_put_str(buf, wps_device_xml_postfix);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void web_connection_stop(struct web_connection *c)
|
|
|
|
{
|
|
|
|
struct upnp_wps_device_sm *sm = c->sm;
|
|
|
|
|
|
|
|
httpread_destroy(c->hread);
|
|
|
|
c->hread = NULL;
|
|
|
|
close(c->sd);
|
|
|
|
c->sd = -1;
|
|
|
|
if (c->next == c) {
|
|
|
|
sm->web_connections = NULL;
|
|
|
|
} else {
|
|
|
|
if (sm->web_connections == c)
|
|
|
|
sm->web_connections = c->next;
|
|
|
|
c->next->prev = c->prev;
|
|
|
|
c->prev->next = c->next;
|
|
|
|
}
|
|
|
|
os_free(c);
|
|
|
|
sm->n_web_connections--;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void http_put_reply_code(struct wpabuf *buf, enum http_reply_code code)
|
|
|
|
{
|
|
|
|
wpabuf_put_str(buf, "HTTP/1.1 ");
|
|
|
|
switch (code) {
|
|
|
|
case HTTP_OK:
|
|
|
|
wpabuf_put_str(buf, "200 OK\r\n");
|
|
|
|
break;
|
|
|
|
case HTTP_BAD_REQUEST:
|
|
|
|
wpabuf_put_str(buf, "400 Bad request\r\n");
|
|
|
|
break;
|
|
|
|
case HTTP_PRECONDITION_FAILED:
|
|
|
|
wpabuf_put_str(buf, "412 Precondition failed\r\n");
|
|
|
|
break;
|
|
|
|
case HTTP_UNIMPLEMENTED:
|
|
|
|
wpabuf_put_str(buf, "501 Unimplemented\r\n");
|
|
|
|
break;
|
|
|
|
case HTTP_INTERNAL_SERVER_ERROR:
|
|
|
|
default:
|
|
|
|
wpabuf_put_str(buf, "500 Internal server error\r\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void http_put_date(struct wpabuf *buf)
|
|
|
|
{
|
|
|
|
wpabuf_put_str(buf, "Date: ");
|
|
|
|
format_date(buf);
|
|
|
|
wpabuf_put_str(buf, "\r\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void http_put_empty(struct wpabuf *buf, enum http_reply_code code)
|
|
|
|
{
|
|
|
|
http_put_reply_code(buf, code);
|
|
|
|
wpabuf_put_str(buf, http_server_hdr);
|
|
|
|
wpabuf_put_str(buf, http_connection_close);
|
|
|
|
wpabuf_put_str(buf, "Content-Length: 0\r\n"
|
|
|
|
"\r\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Given that we have received a header w/ GET, act upon it
|
|
|
|
*
|
|
|
|
* Format of GET (case-insensitive):
|
|
|
|
*
|
|
|
|
* First line must be:
|
|
|
|
* GET /<file> HTTP/1.1
|
|
|
|
* Since we don't do anything fancy we just ignore other lines.
|
|
|
|
*
|
|
|
|
* Our response (if no error) which includes only required lines is:
|
|
|
|
* HTTP/1.1 200 OK
|
|
|
|
* Connection: close
|
|
|
|
* Content-Type: text/xml
|
|
|
|
* Date: <rfc1123-date>
|
|
|
|
*
|
|
|
|
* Header lines must end with \r\n
|
|
|
|
* Per RFC 2616, content-length: is not required but connection:close
|
|
|
|
* would appear to be required (given that we will be closing it!).
|
|
|
|
*/
|
|
|
|
static void web_connection_parse_get(struct web_connection *c, char *filename)
|
|
|
|
{
|
|
|
|
struct upnp_wps_device_sm *sm = c->sm;
|
|
|
|
struct wpabuf *buf; /* output buffer, allocated */
|
|
|
|
char *put_length_here;
|
|
|
|
char *body_start;
|
|
|
|
enum {
|
|
|
|
GET_DEVICE_XML_FILE,
|
|
|
|
GET_SCPD_XML_FILE
|
|
|
|
} req;
|
|
|
|
size_t extra_len = 0;
|
|
|
|
int body_length;
|
|
|
|
char len_buf[10];
|
|
|
|
|
|
|
|
/*
|
|
|
|
* It is not required that filenames be case insensitive but it is
|
|
|
|
* allowed and cannot hurt here.
|
|
|
|
*/
|
|
|
|
if (filename == NULL)
|
|
|
|
filename = "(null)"; /* just in case */
|
|
|
|
if (os_strcasecmp(filename, UPNP_WPS_DEVICE_XML_FILE) == 0) {
|
2009-02-06 18:04:55 +01:00
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: HTTP GET for device XML");
|
2009-01-29 17:47:02 +01:00
|
|
|
req = GET_DEVICE_XML_FILE;
|
|
|
|
extra_len = 3000;
|
|
|
|
if (sm->wps->friendly_name)
|
|
|
|
extra_len += os_strlen(sm->wps->friendly_name);
|
|
|
|
if (sm->wps->manufacturer_url)
|
|
|
|
extra_len += os_strlen(sm->wps->manufacturer_url);
|
|
|
|
if (sm->wps->model_description)
|
|
|
|
extra_len += os_strlen(sm->wps->model_description);
|
|
|
|
if (sm->wps->model_url)
|
|
|
|
extra_len += os_strlen(sm->wps->model_url);
|
|
|
|
if (sm->wps->upc)
|
|
|
|
extra_len += os_strlen(sm->wps->upc);
|
|
|
|
} else if (!os_strcasecmp(filename, UPNP_WPS_SCPD_XML_FILE)) {
|
2009-02-06 18:04:55 +01:00
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: HTTP GET for SCPD XML");
|
2009-01-29 17:47:02 +01:00
|
|
|
req = GET_SCPD_XML_FILE;
|
|
|
|
extra_len = os_strlen(wps_scpd_xml);
|
|
|
|
} else {
|
|
|
|
/* File not found */
|
2009-02-06 18:04:55 +01:00
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: HTTP GET file not found: %s",
|
2009-01-29 17:47:02 +01:00
|
|
|
filename);
|
|
|
|
buf = wpabuf_alloc(200);
|
|
|
|
if (buf == NULL)
|
|
|
|
return;
|
|
|
|
wpabuf_put_str(buf,
|
|
|
|
"HTTP/1.1 404 Not Found\r\n"
|
|
|
|
"Connection: close\r\n");
|
|
|
|
|
|
|
|
http_put_date(buf);
|
|
|
|
|
|
|
|
/* terminating empty line */
|
|
|
|
wpabuf_put_str(buf, "\r\n");
|
|
|
|
|
|
|
|
goto send_buf;
|
|
|
|
}
|
|
|
|
|
|
|
|
buf = wpabuf_alloc(1000 + extra_len);
|
|
|
|
if (buf == NULL)
|
|
|
|
return;
|
|
|
|
|
|
|
|
wpabuf_put_str(buf,
|
|
|
|
"HTTP/1.1 200 OK\r\n"
|
|
|
|
"Content-Type: text/xml; charset=\"utf-8\"\r\n");
|
|
|
|
wpabuf_put_str(buf, "Server: Unspecified, UPnP/1.0, Unspecified\r\n");
|
|
|
|
wpabuf_put_str(buf, "Connection: close\r\n");
|
|
|
|
wpabuf_put_str(buf, "Content-Length: ");
|
|
|
|
/*
|
|
|
|
* We will paste the length in later, leaving some extra whitespace.
|
|
|
|
* HTTP code is supposed to be tolerant of extra whitespace.
|
|
|
|
*/
|
|
|
|
put_length_here = wpabuf_put(buf, 0);
|
|
|
|
wpabuf_put_str(buf, " \r\n");
|
|
|
|
|
|
|
|
http_put_date(buf);
|
|
|
|
|
|
|
|
/* terminating empty line */
|
|
|
|
wpabuf_put_str(buf, "\r\n");
|
|
|
|
|
|
|
|
body_start = wpabuf_put(buf, 0);
|
|
|
|
|
|
|
|
switch (req) {
|
|
|
|
case GET_DEVICE_XML_FILE:
|
|
|
|
format_wps_device_xml(sm, buf);
|
|
|
|
break;
|
|
|
|
case GET_SCPD_XML_FILE:
|
|
|
|
wpabuf_put_str(buf, wps_scpd_xml);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Now patch in the content length at the end */
|
|
|
|
body_length = (char *) wpabuf_put(buf, 0) - body_start;
|
|
|
|
os_snprintf(len_buf, 10, "%d", body_length);
|
|
|
|
os_memcpy(put_length_here, len_buf, os_strlen(len_buf));
|
|
|
|
|
|
|
|
send_buf:
|
|
|
|
send_wpabuf(c->sd, buf);
|
|
|
|
wpabuf_free(buf);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static struct wpabuf * web_get_item(char *data, const char *name,
|
|
|
|
enum http_reply_code *ret)
|
|
|
|
{
|
|
|
|
char *msg;
|
|
|
|
struct wpabuf *buf;
|
|
|
|
unsigned char *decoded;
|
|
|
|
size_t len;
|
|
|
|
|
|
|
|
if (upnp_get_first_document_item(data, name, &msg)) {
|
|
|
|
*ret = UPNP_ARG_VALUE_INVALID;
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
decoded = base64_decode((unsigned char *) msg, os_strlen(msg), &len);
|
|
|
|
os_free(msg);
|
|
|
|
if (decoded == NULL) {
|
|
|
|
*ret = UPNP_OUT_OF_MEMORY;
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
buf = wpabuf_alloc_ext_data(decoded, len);
|
|
|
|
if (buf == NULL) {
|
|
|
|
os_free(decoded);
|
|
|
|
*ret = UPNP_OUT_OF_MEMORY;
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
return buf;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static enum http_reply_code
|
|
|
|
web_process_get_device_info(struct upnp_wps_device_sm *sm,
|
|
|
|
struct wpabuf **reply, const char **replyname)
|
|
|
|
{
|
|
|
|
static const char *name = "NewDeviceInfo";
|
|
|
|
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: GetDeviceInfo");
|
|
|
|
if (sm->ctx->rx_req_get_device_info == NULL)
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
*reply = sm->ctx->rx_req_get_device_info(sm->priv, &sm->peer);
|
|
|
|
if (*reply == NULL) {
|
|
|
|
wpa_printf(MSG_INFO, "WPS UPnP: Failed to get DeviceInfo");
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
}
|
|
|
|
*replyname = name;
|
|
|
|
return HTTP_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static enum http_reply_code
|
|
|
|
web_process_put_message(struct upnp_wps_device_sm *sm, char *data,
|
|
|
|
struct wpabuf **reply, const char **replyname)
|
|
|
|
{
|
|
|
|
struct wpabuf *msg;
|
|
|
|
static const char *name = "NewOutMessage";
|
|
|
|
enum http_reply_code ret;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* PutMessage is used by external UPnP-based Registrar to perform WPS
|
|
|
|
* operation with the access point itself; as compared with
|
|
|
|
* PutWLANResponse which is for proxying.
|
|
|
|
*/
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: PutMessage");
|
|
|
|
if (sm->ctx->rx_req_put_message == NULL)
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
msg = web_get_item(data, "NewInMessage", &ret);
|
|
|
|
if (msg == NULL)
|
|
|
|
return ret;
|
|
|
|
*reply = sm->ctx->rx_req_put_message(sm->priv, &sm->peer, msg);
|
|
|
|
wpabuf_free(msg);
|
|
|
|
if (*reply == NULL)
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
*replyname = name;
|
|
|
|
return HTTP_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static enum http_reply_code
|
|
|
|
web_process_get_ap_settings(struct upnp_wps_device_sm *sm, char *data,
|
|
|
|
struct wpabuf **reply, const char **replyname)
|
|
|
|
{
|
|
|
|
struct wpabuf *msg;
|
|
|
|
static const char *name = "NewAPSettings";
|
|
|
|
enum http_reply_code ret;
|
|
|
|
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: GetAPSettings");
|
|
|
|
if (sm->ctx->rx_req_get_ap_settings == NULL)
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
msg = web_get_item(data, "NewMessage", &ret);
|
|
|
|
if (msg == NULL)
|
|
|
|
return ret;
|
|
|
|
*reply = sm->ctx->rx_req_get_ap_settings(sm->priv, msg);
|
|
|
|
wpabuf_free(msg);
|
|
|
|
if (*reply == NULL)
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
*replyname = name;
|
|
|
|
return HTTP_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static enum http_reply_code
|
|
|
|
web_process_set_ap_settings(struct upnp_wps_device_sm *sm, char *data,
|
|
|
|
struct wpabuf **reply, const char **replyname)
|
|
|
|
{
|
|
|
|
struct wpabuf *msg;
|
|
|
|
enum http_reply_code ret;
|
|
|
|
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: SetAPSettings");
|
|
|
|
msg = web_get_item(data, "NewAPSettings", &ret);
|
|
|
|
if (msg == NULL)
|
|
|
|
return ret;
|
|
|
|
if (!sm->ctx->rx_req_set_ap_settings ||
|
|
|
|
sm->ctx->rx_req_set_ap_settings(sm->priv, msg)) {
|
|
|
|
wpabuf_free(msg);
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
}
|
|
|
|
wpabuf_free(msg);
|
|
|
|
*replyname = NULL;
|
|
|
|
*reply = NULL;
|
|
|
|
return HTTP_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static enum http_reply_code
|
|
|
|
web_process_del_ap_settings(struct upnp_wps_device_sm *sm, char *data,
|
|
|
|
struct wpabuf **reply, const char **replyname)
|
|
|
|
{
|
|
|
|
struct wpabuf *msg;
|
|
|
|
enum http_reply_code ret;
|
|
|
|
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: DelAPSettings");
|
|
|
|
msg = web_get_item(data, "NewAPSettings", &ret);
|
|
|
|
if (msg == NULL)
|
|
|
|
return ret;
|
|
|
|
if (!sm->ctx->rx_req_del_ap_settings ||
|
|
|
|
sm->ctx->rx_req_del_ap_settings(sm->priv, msg)) {
|
|
|
|
wpabuf_free(msg);
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
}
|
|
|
|
wpabuf_free(msg);
|
|
|
|
*replyname = NULL;
|
|
|
|
*reply = NULL;
|
|
|
|
return HTTP_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static enum http_reply_code
|
|
|
|
web_process_get_sta_settings(struct upnp_wps_device_sm *sm, char *data,
|
|
|
|
struct wpabuf **reply, const char **replyname)
|
|
|
|
{
|
|
|
|
struct wpabuf *msg;
|
|
|
|
static const char *name = "NewSTASettings";
|
|
|
|
enum http_reply_code ret;
|
|
|
|
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: GetSTASettings");
|
|
|
|
if (sm->ctx->rx_req_get_sta_settings == NULL)
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
msg = web_get_item(data, "NewMessage", &ret);
|
|
|
|
if (msg == NULL)
|
|
|
|
return ret;
|
|
|
|
*reply = sm->ctx->rx_req_get_sta_settings(sm->priv, msg);
|
|
|
|
wpabuf_free(msg);
|
|
|
|
if (*reply == NULL)
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
*replyname = name;
|
|
|
|
return HTTP_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static enum http_reply_code
|
|
|
|
web_process_set_sta_settings(struct upnp_wps_device_sm *sm, char *data,
|
|
|
|
struct wpabuf **reply, const char **replyname)
|
|
|
|
{
|
|
|
|
struct wpabuf *msg;
|
|
|
|
enum http_reply_code ret;
|
|
|
|
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: SetSTASettings");
|
|
|
|
msg = web_get_item(data, "NewSTASettings", &ret);
|
|
|
|
if (msg == NULL)
|
|
|
|
return ret;
|
|
|
|
if (!sm->ctx->rx_req_set_sta_settings ||
|
|
|
|
sm->ctx->rx_req_set_sta_settings(sm->priv, msg)) {
|
|
|
|
wpabuf_free(msg);
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
}
|
|
|
|
wpabuf_free(msg);
|
|
|
|
*replyname = NULL;
|
|
|
|
*reply = NULL;
|
|
|
|
return HTTP_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static enum http_reply_code
|
|
|
|
web_process_del_sta_settings(struct upnp_wps_device_sm *sm, char *data,
|
|
|
|
struct wpabuf **reply, const char **replyname)
|
|
|
|
{
|
|
|
|
struct wpabuf *msg;
|
|
|
|
enum http_reply_code ret;
|
|
|
|
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: DelSTASettings");
|
|
|
|
msg = web_get_item(data, "NewSTASettings", &ret);
|
|
|
|
if (msg == NULL)
|
|
|
|
return ret;
|
|
|
|
if (!sm->ctx->rx_req_del_sta_settings ||
|
|
|
|
sm->ctx->rx_req_del_sta_settings(sm->priv, msg)) {
|
|
|
|
wpabuf_free(msg);
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
}
|
|
|
|
wpabuf_free(msg);
|
|
|
|
*replyname = NULL;
|
|
|
|
*reply = NULL;
|
|
|
|
return HTTP_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static enum http_reply_code
|
|
|
|
web_process_put_wlan_response(struct upnp_wps_device_sm *sm, char *data,
|
|
|
|
struct wpabuf **reply, const char **replyname)
|
|
|
|
{
|
|
|
|
struct wpabuf *msg;
|
|
|
|
enum http_reply_code ret;
|
|
|
|
u8 macaddr[ETH_ALEN];
|
|
|
|
int ev_type;
|
2009-02-06 20:39:32 +01:00
|
|
|
int type;
|
2009-01-29 17:47:02 +01:00
|
|
|
char *val;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* External UPnP-based Registrar is passing us a message to be proxied
|
|
|
|
* over to a Wi-Fi -based client of ours.
|
|
|
|
*/
|
|
|
|
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse");
|
|
|
|
msg = web_get_item(data, "NewMessage", &ret);
|
|
|
|
if (msg == NULL)
|
|
|
|
return ret;
|
|
|
|
if (upnp_get_first_document_item(data, "NewWLANEventType", &val)) {
|
|
|
|
wpabuf_free(msg);
|
|
|
|
return UPNP_ARG_VALUE_INVALID;
|
|
|
|
}
|
|
|
|
ev_type = atol(val);
|
|
|
|
os_free(val);
|
|
|
|
val = NULL;
|
|
|
|
if (upnp_get_first_document_item(data, "NewWLANEventMAC", &val) ||
|
|
|
|
hwaddr_aton(val, macaddr)) {
|
|
|
|
wpabuf_free(msg);
|
|
|
|
os_free(val);
|
|
|
|
return UPNP_ARG_VALUE_INVALID;
|
|
|
|
}
|
|
|
|
os_free(val);
|
|
|
|
if (ev_type == UPNP_WPS_WLANEVENT_TYPE_EAP) {
|
|
|
|
struct wps_parse_attr attr;
|
|
|
|
if (wps_parse_msg(msg, &attr) < 0 ||
|
|
|
|
attr.msg_type == NULL)
|
|
|
|
type = -1;
|
|
|
|
else
|
|
|
|
type = *attr.msg_type;
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: Message Type %d", type);
|
2009-02-06 20:39:32 +01:00
|
|
|
} else
|
|
|
|
type = -1;
|
2009-02-06 20:44:19 +01:00
|
|
|
if (!sm->ctx->rx_req_put_wlan_response ||
|
|
|
|
sm->ctx->rx_req_put_wlan_response(sm->priv, ev_type, macaddr, msg,
|
|
|
|
type)) {
|
2009-01-29 17:47:02 +01:00
|
|
|
wpa_printf(MSG_INFO, "WPS UPnP: Fail: sm->ctx->"
|
2009-02-06 20:44:19 +01:00
|
|
|
"rx_req_put_wlan_response");
|
2009-01-29 17:47:02 +01:00
|
|
|
wpabuf_free(msg);
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
}
|
|
|
|
wpabuf_free(msg);
|
|
|
|
*replyname = NULL;
|
|
|
|
*reply = NULL;
|
|
|
|
return HTTP_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static enum http_reply_code
|
|
|
|
web_process_set_selected_registrar(struct upnp_wps_device_sm *sm, char *data,
|
|
|
|
struct wpabuf **reply,
|
|
|
|
const char **replyname)
|
|
|
|
{
|
|
|
|
struct wpabuf *msg;
|
|
|
|
enum http_reply_code ret;
|
|
|
|
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: SetSelectedRegistrar");
|
|
|
|
msg = web_get_item(data, "NewMessage", &ret);
|
|
|
|
if (msg == NULL)
|
|
|
|
return ret;
|
|
|
|
if (!sm->ctx->rx_req_set_selected_registrar ||
|
|
|
|
sm->ctx->rx_req_set_selected_registrar(sm->priv, msg)) {
|
|
|
|
wpabuf_free(msg);
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
}
|
|
|
|
wpabuf_free(msg);
|
|
|
|
*replyname = NULL;
|
|
|
|
*reply = NULL;
|
|
|
|
return HTTP_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static enum http_reply_code
|
|
|
|
web_process_reboot_ap(struct upnp_wps_device_sm *sm, char *data,
|
|
|
|
struct wpabuf **reply, const char **replyname)
|
|
|
|
{
|
|
|
|
struct wpabuf *msg;
|
|
|
|
enum http_reply_code ret;
|
|
|
|
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: RebootAP");
|
|
|
|
msg = web_get_item(data, "NewAPSettings", &ret);
|
|
|
|
if (msg == NULL)
|
|
|
|
return ret;
|
|
|
|
if (!sm->ctx->rx_req_reboot_ap ||
|
|
|
|
sm->ctx->rx_req_reboot_ap(sm->priv, msg)) {
|
|
|
|
wpabuf_free(msg);
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
}
|
|
|
|
wpabuf_free(msg);
|
|
|
|
*replyname = NULL;
|
|
|
|
*reply = NULL;
|
|
|
|
return HTTP_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static enum http_reply_code
|
|
|
|
web_process_reset_ap(struct upnp_wps_device_sm *sm, char *data,
|
|
|
|
struct wpabuf **reply, const char **replyname)
|
|
|
|
{
|
|
|
|
struct wpabuf *msg;
|
|
|
|
enum http_reply_code ret;
|
|
|
|
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: ResetAP");
|
|
|
|
msg = web_get_item(data, "NewMessage", &ret);
|
|
|
|
if (msg == NULL)
|
|
|
|
return ret;
|
|
|
|
if (!sm->ctx->rx_req_reset_ap ||
|
|
|
|
sm->ctx->rx_req_reset_ap(sm->priv, msg)) {
|
|
|
|
wpabuf_free(msg);
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
}
|
|
|
|
wpabuf_free(msg);
|
|
|
|
*replyname = NULL;
|
|
|
|
*reply = NULL;
|
|
|
|
return HTTP_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static enum http_reply_code
|
|
|
|
web_process_reboot_sta(struct upnp_wps_device_sm *sm, char *data,
|
|
|
|
struct wpabuf **reply, const char **replyname)
|
|
|
|
{
|
|
|
|
struct wpabuf *msg;
|
|
|
|
enum http_reply_code ret;
|
|
|
|
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: RebootSTA");
|
|
|
|
msg = web_get_item(data, "NewSTASettings", &ret);
|
|
|
|
if (msg == NULL)
|
|
|
|
return ret;
|
|
|
|
if (!sm->ctx->rx_req_reboot_sta ||
|
|
|
|
sm->ctx->rx_req_reboot_sta(sm->priv, msg)) {
|
|
|
|
wpabuf_free(msg);
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
}
|
|
|
|
wpabuf_free(msg);
|
|
|
|
*replyname = NULL;
|
|
|
|
*reply = NULL;
|
|
|
|
return HTTP_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static enum http_reply_code
|
|
|
|
web_process_reset_sta(struct upnp_wps_device_sm *sm, char *data,
|
|
|
|
struct wpabuf **reply, const char **replyname)
|
|
|
|
{
|
|
|
|
struct wpabuf *msg;
|
|
|
|
enum http_reply_code ret;
|
|
|
|
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: ResetSTA");
|
|
|
|
msg = web_get_item(data, "NewMessage", &ret);
|
|
|
|
if (msg == NULL)
|
|
|
|
return ret;
|
|
|
|
if (!sm->ctx->rx_req_reset_sta ||
|
|
|
|
sm->ctx->rx_req_reset_sta(sm->priv, msg)) {
|
|
|
|
wpabuf_free(msg);
|
|
|
|
return HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
}
|
|
|
|
wpabuf_free(msg);
|
|
|
|
*replyname = NULL;
|
|
|
|
*reply = NULL;
|
|
|
|
return HTTP_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static const char *soap_prefix =
|
|
|
|
"<?xml version=\"1.0\"?>\n"
|
|
|
|
"<s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\" "
|
|
|
|
"s:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\">\n"
|
|
|
|
"<s:Body>\n";
|
|
|
|
static const char *soap_postfix =
|
|
|
|
"</s:Body>\n</s:Envelope>\n";
|
|
|
|
|
|
|
|
static const char *soap_error_prefix =
|
|
|
|
"<s:Fault>\n"
|
|
|
|
"<faultcode>s:Client</faultcode>\n"
|
|
|
|
"<faultstring>UPnPError</faultstring>\n"
|
|
|
|
"<detail>\n"
|
|
|
|
"<UPnPError xmlns=\"urn:schemas-upnp-org:control-1-0\">\n";
|
|
|
|
static const char *soap_error_postfix =
|
|
|
|
"<errorDescription>Error</errorDescription>\n"
|
|
|
|
"</UPnPError>\n"
|
|
|
|
"</detail>\n"
|
|
|
|
"</s:Fault>\n";
|
|
|
|
|
|
|
|
static void web_connection_send_reply(struct web_connection *c,
|
|
|
|
enum http_reply_code ret,
|
|
|
|
const char *action, int action_len,
|
|
|
|
const struct wpabuf *reply,
|
|
|
|
const char *replyname)
|
|
|
|
{
|
|
|
|
struct wpabuf *buf;
|
|
|
|
char *replydata;
|
|
|
|
char *put_length_here = NULL;
|
|
|
|
char *body_start = NULL;
|
|
|
|
|
|
|
|
if (reply) {
|
|
|
|
size_t len;
|
|
|
|
replydata = (char *) base64_encode(wpabuf_head(reply),
|
|
|
|
wpabuf_len(reply), &len);
|
|
|
|
} else
|
|
|
|
replydata = NULL;
|
|
|
|
|
|
|
|
/* Parameters of the response:
|
|
|
|
* action(action_len) -- action we are responding to
|
|
|
|
* replyname -- a name we need for the reply
|
|
|
|
* replydata -- NULL or null-terminated string
|
|
|
|
*/
|
|
|
|
buf = wpabuf_alloc(1000 + (replydata ? os_strlen(replydata) : 0U) +
|
|
|
|
(action_len > 0 ? action_len * 2 : 0));
|
|
|
|
if (buf == NULL) {
|
|
|
|
wpa_printf(MSG_INFO, "WPS UPnP: Cannot allocate reply to "
|
|
|
|
"POST");
|
|
|
|
wpabuf_free(buf);
|
|
|
|
os_free(replydata);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Assuming we will be successful, put in the output header first.
|
|
|
|
* Note: we do not keep connections alive (and httpread does
|
|
|
|
* not support it)... therefore we must have Connection: close.
|
|
|
|
*/
|
|
|
|
if (ret == HTTP_OK) {
|
|
|
|
wpabuf_put_str(buf,
|
|
|
|
"HTTP/1.1 200 OK\r\n"
|
|
|
|
"Content-Type: text/xml; "
|
|
|
|
"charset=\"utf-8\"\r\n");
|
|
|
|
} else {
|
|
|
|
wpabuf_printf(buf, "HTTP/1.1 %d Error\r\n", ret);
|
|
|
|
}
|
|
|
|
wpabuf_put_str(buf, http_connection_close);
|
|
|
|
|
|
|
|
wpabuf_put_str(buf, "Content-Length: ");
|
|
|
|
/*
|
|
|
|
* We will paste the length in later, leaving some extra whitespace.
|
|
|
|
* HTTP code is supposed to be tolerant of extra whitespace.
|
|
|
|
*/
|
|
|
|
put_length_here = wpabuf_put(buf, 0);
|
|
|
|
wpabuf_put_str(buf, " \r\n");
|
|
|
|
|
|
|
|
http_put_date(buf);
|
|
|
|
|
|
|
|
/* terminating empty line */
|
|
|
|
wpabuf_put_str(buf, "\r\n");
|
|
|
|
|
|
|
|
body_start = wpabuf_put(buf, 0);
|
|
|
|
|
|
|
|
if (ret == HTTP_OK) {
|
|
|
|
wpabuf_put_str(buf, soap_prefix);
|
|
|
|
wpabuf_put_str(buf, "<u:");
|
|
|
|
wpabuf_put_data(buf, action, action_len);
|
|
|
|
wpabuf_put_str(buf, "Response xmlns:u=\"");
|
|
|
|
wpabuf_put_str(buf, urn_wfawlanconfig);
|
|
|
|
wpabuf_put_str(buf, "\">\n");
|
|
|
|
if (replydata && replyname) {
|
|
|
|
/* TODO: might possibly need to escape part of reply
|
|
|
|
* data? ...
|
|
|
|
* probably not, unlikely to have ampersand(&) or left
|
|
|
|
* angle bracket (<) in it...
|
|
|
|
*/
|
|
|
|
wpabuf_printf(buf, "<%s>", replyname);
|
|
|
|
wpabuf_put_str(buf, replydata);
|
|
|
|
wpabuf_printf(buf, "</%s>\n", replyname);
|
|
|
|
}
|
|
|
|
wpabuf_put_str(buf, "</u:");
|
|
|
|
wpabuf_put_data(buf, action, action_len);
|
|
|
|
wpabuf_put_str(buf, "Response>\n");
|
|
|
|
wpabuf_put_str(buf, soap_postfix);
|
|
|
|
} else {
|
|
|
|
/* Error case */
|
|
|
|
wpabuf_put_str(buf, soap_prefix);
|
|
|
|
wpabuf_put_str(buf, soap_error_prefix);
|
|
|
|
wpabuf_printf(buf, "<errorCode>%d</errorCode>\n", ret);
|
|
|
|
wpabuf_put_str(buf, soap_error_postfix);
|
|
|
|
wpabuf_put_str(buf, soap_postfix);
|
|
|
|
}
|
|
|
|
os_free(replydata);
|
|
|
|
|
|
|
|
/* Now patch in the content length at the end */
|
|
|
|
if (body_start && put_length_here) {
|
|
|
|
int body_length = (char *) wpabuf_put(buf, 0) - body_start;
|
|
|
|
char len_buf[10];
|
|
|
|
os_snprintf(len_buf, sizeof(len_buf), "%d", body_length);
|
|
|
|
os_memcpy(put_length_here, len_buf, os_strlen(len_buf));
|
|
|
|
}
|
|
|
|
|
|
|
|
send_wpabuf(c->sd, buf);
|
|
|
|
wpabuf_free(buf);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static const char * web_get_action(struct web_connection *c,
|
|
|
|
const char *filename, size_t *action_len)
|
|
|
|
{
|
|
|
|
const char *match;
|
|
|
|
int match_len;
|
|
|
|
char *b;
|
|
|
|
char *action;
|
|
|
|
|
|
|
|
*action_len = 0;
|
|
|
|
if (os_strcasecmp(filename, UPNP_WPS_DEVICE_CONTROL_FILE)) {
|
|
|
|
wpa_printf(MSG_INFO, "WPS UPnP: Invalid POST filename %s",
|
|
|
|
filename);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
/* The SOAPAction line of the header tells us what we want to do */
|
|
|
|
b = httpread_hdr_line_get(c->hread, "SOAPAction:");
|
|
|
|
if (b == NULL)
|
|
|
|
return NULL;
|
|
|
|
if (*b == '"')
|
|
|
|
b++;
|
|
|
|
else
|
|
|
|
return NULL;
|
|
|
|
match = urn_wfawlanconfig;
|
|
|
|
match_len = os_strlen(urn_wfawlanconfig) - 1;
|
|
|
|
if (os_strncasecmp(b, match, match_len))
|
|
|
|
return NULL;
|
|
|
|
b += match_len;
|
|
|
|
/* skip over version */
|
|
|
|
while (isgraph(*b) && *b != '#')
|
|
|
|
b++;
|
|
|
|
if (*b != '#')
|
|
|
|
return NULL;
|
|
|
|
b++;
|
|
|
|
/* Following the sharp(#) should be the action and a double quote */
|
|
|
|
action = b;
|
|
|
|
while (isgraph(*b) && *b != '"')
|
|
|
|
b++;
|
|
|
|
if (*b != '"')
|
|
|
|
return NULL;
|
|
|
|
*action_len = b - action;
|
|
|
|
return action;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Given that we have received a header w/ POST, act upon it
|
|
|
|
*
|
|
|
|
* Format of POST (case-insensitive):
|
|
|
|
*
|
|
|
|
* First line must be:
|
|
|
|
* POST /<file> HTTP/1.1
|
|
|
|
* Since we don't do anything fancy we just ignore other lines.
|
|
|
|
*
|
|
|
|
* Our response (if no error) which includes only required lines is:
|
|
|
|
* HTTP/1.1 200 OK
|
|
|
|
* Connection: close
|
|
|
|
* Content-Type: text/xml
|
|
|
|
* Date: <rfc1123-date>
|
|
|
|
*
|
|
|
|
* Header lines must end with \r\n
|
|
|
|
* Per RFC 2616, content-length: is not required but connection:close
|
|
|
|
* would appear to be required (given that we will be closing it!).
|
|
|
|
*/
|
|
|
|
static void web_connection_parse_post(struct web_connection *c,
|
|
|
|
const char *filename)
|
|
|
|
{
|
|
|
|
enum http_reply_code ret;
|
|
|
|
struct upnp_wps_device_sm *sm = c->sm;
|
|
|
|
char *data = httpread_data_get(c->hread); /* body of http msg */
|
|
|
|
const char *action;
|
|
|
|
size_t action_len;
|
|
|
|
const char *replyname = NULL; /* argument name for the reply */
|
|
|
|
struct wpabuf *reply = NULL; /* data for the reply */
|
|
|
|
|
|
|
|
ret = UPNP_INVALID_ACTION;
|
|
|
|
action = web_get_action(c, filename, &action_len);
|
|
|
|
if (action == NULL)
|
|
|
|
goto bad;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* There are quite a few possible actions. Although we appear to
|
|
|
|
* support them all here, not all of them are necessarily supported by
|
|
|
|
* callbacks at higher levels.
|
|
|
|
*/
|
|
|
|
if (!os_strncasecmp("GetDeviceInfo", action, action_len))
|
|
|
|
ret = web_process_get_device_info(sm, &reply, &replyname);
|
|
|
|
else if (!os_strncasecmp("PutMessage", action, action_len))
|
|
|
|
ret = web_process_put_message(sm, data, &reply, &replyname);
|
|
|
|
else if (!os_strncasecmp("GetAPSettings", action, action_len))
|
|
|
|
ret = web_process_get_ap_settings(sm, data, &reply,
|
|
|
|
&replyname);
|
|
|
|
else if (!os_strncasecmp("SetAPSettings", action, action_len))
|
|
|
|
ret = web_process_set_ap_settings(sm, data, &reply,
|
|
|
|
&replyname);
|
|
|
|
else if (!os_strncasecmp("DelAPSettings", action, action_len))
|
|
|
|
ret = web_process_del_ap_settings(sm, data, &reply,
|
|
|
|
&replyname);
|
|
|
|
else if (!os_strncasecmp("GetSTASettings", action, action_len))
|
|
|
|
ret = web_process_get_sta_settings(sm, data, &reply,
|
|
|
|
&replyname);
|
|
|
|
else if (!os_strncasecmp("SetSTASettings", action, action_len))
|
|
|
|
ret = web_process_set_sta_settings(sm, data, &reply,
|
|
|
|
&replyname);
|
|
|
|
else if (!os_strncasecmp("DelSTASettings", action, action_len))
|
|
|
|
ret = web_process_del_sta_settings(sm, data, &reply,
|
|
|
|
&replyname);
|
|
|
|
else if (!os_strncasecmp("PutWLANResponse", action, action_len))
|
|
|
|
ret = web_process_put_wlan_response(sm, data, &reply,
|
|
|
|
&replyname);
|
|
|
|
else if (!os_strncasecmp("SetSelectedRegistrar", action, action_len))
|
|
|
|
ret = web_process_set_selected_registrar(sm, data, &reply,
|
|
|
|
&replyname);
|
|
|
|
else if (!os_strncasecmp("RebootAP", action, action_len))
|
|
|
|
ret = web_process_reboot_ap(sm, data, &reply, &replyname);
|
|
|
|
else if (!os_strncasecmp("ResetAP", action, action_len))
|
|
|
|
ret = web_process_reset_ap(sm, data, &reply, &replyname);
|
|
|
|
else if (!os_strncasecmp("RebootSTA", action, action_len))
|
|
|
|
ret = web_process_reboot_sta(sm, data, &reply, &replyname);
|
|
|
|
else if (!os_strncasecmp("ResetSTA", action, action_len))
|
|
|
|
ret = web_process_reset_sta(sm, data, &reply, &replyname);
|
|
|
|
else
|
|
|
|
wpa_printf(MSG_INFO, "WPS UPnP: Unknown POST type");
|
|
|
|
|
|
|
|
bad:
|
|
|
|
if (ret != HTTP_OK)
|
|
|
|
wpa_printf(MSG_INFO, "WPS UPnP: POST failure ret=%d", ret);
|
|
|
|
web_connection_send_reply(c, ret, action, action_len, reply,
|
|
|
|
replyname);
|
|
|
|
wpabuf_free(reply);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Given that we have received a header w/ SUBSCRIBE, act upon it
|
|
|
|
*
|
|
|
|
* Format of SUBSCRIBE (case-insensitive):
|
|
|
|
*
|
|
|
|
* First line must be:
|
|
|
|
* SUBSCRIBE /wps_event HTTP/1.1
|
|
|
|
*
|
|
|
|
* Our response (if no error) which includes only required lines is:
|
|
|
|
* HTTP/1.1 200 OK
|
|
|
|
* Server: xx, UPnP/1.0, xx
|
|
|
|
* SID: uuid:xxxxxxxxx
|
|
|
|
* Timeout: Second-<n>
|
|
|
|
* Content-Length: 0
|
|
|
|
* Date: xxxx
|
|
|
|
*
|
|
|
|
* Header lines must end with \r\n
|
|
|
|
* Per RFC 2616, content-length: is not required but connection:close
|
|
|
|
* would appear to be required (given that we will be closing it!).
|
|
|
|
*/
|
|
|
|
static void web_connection_parse_subscribe(struct web_connection *c,
|
|
|
|
const char *filename)
|
|
|
|
{
|
|
|
|
struct upnp_wps_device_sm *sm = c->sm;
|
|
|
|
struct wpabuf *buf;
|
|
|
|
char *b;
|
|
|
|
char *hdr = httpread_hdr_get(c->hread);
|
|
|
|
char *h;
|
|
|
|
char *match;
|
|
|
|
int match_len;
|
|
|
|
char *end;
|
|
|
|
int len;
|
|
|
|
int got_nt = 0;
|
|
|
|
u8 uuid[UUID_LEN];
|
|
|
|
int got_uuid = 0;
|
|
|
|
char *callback_urls = NULL;
|
|
|
|
struct subscription *s = NULL;
|
|
|
|
enum http_reply_code ret = HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
|
|
|
|
buf = wpabuf_alloc(1000);
|
|
|
|
if (buf == NULL)
|
|
|
|
return;
|
|
|
|
|
|
|
|
/* Parse/validate headers */
|
|
|
|
h = hdr;
|
|
|
|
/* First line: SUBSCRIBE /wps_event HTTP/1.1
|
|
|
|
* has already been parsed.
|
|
|
|
*/
|
|
|
|
if (os_strcasecmp(filename, UPNP_WPS_DEVICE_EVENT_FILE) != 0) {
|
|
|
|
ret = HTTP_PRECONDITION_FAILED;
|
|
|
|
goto error;
|
|
|
|
}
|
2009-02-06 18:04:55 +01:00
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: HTTP SUBSCRIBE for event");
|
2009-01-29 17:47:02 +01:00
|
|
|
end = os_strchr(h, '\n');
|
|
|
|
|
|
|
|
for (; end != NULL; h = end + 1) {
|
|
|
|
/* Option line by option line */
|
|
|
|
h = end + 1;
|
|
|
|
end = os_strchr(h, '\n');
|
|
|
|
if (end == NULL)
|
|
|
|
break; /* no unterminated lines allowed */
|
|
|
|
|
|
|
|
/* NT assures that it is our type of subscription;
|
|
|
|
* not used for a renewl.
|
|
|
|
**/
|
|
|
|
match = "NT:";
|
|
|
|
match_len = os_strlen(match);
|
|
|
|
if (os_strncasecmp(h, match, match_len) == 0) {
|
|
|
|
h += match_len;
|
|
|
|
while (*h == ' ' || *h == '\t')
|
|
|
|
h++;
|
|
|
|
match = "upnp:event";
|
|
|
|
match_len = os_strlen(match);
|
|
|
|
if (os_strncasecmp(h, match, match_len) != 0) {
|
|
|
|
ret = HTTP_BAD_REQUEST;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
got_nt = 1;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
/* HOST should refer to us */
|
|
|
|
#if 0
|
|
|
|
match = "HOST:";
|
|
|
|
match_len = os_strlen(match);
|
|
|
|
if (os_strncasecmp(h, match, match_len) == 0) {
|
|
|
|
h += match_len;
|
|
|
|
while (*h == ' ' || *h == '\t')
|
|
|
|
h++;
|
|
|
|
.....
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
/* CALLBACK gives one or more URLs for NOTIFYs
|
|
|
|
* to be sent as a result of the subscription.
|
|
|
|
* Each URL is enclosed in angle brackets.
|
|
|
|
*/
|
|
|
|
match = "CALLBACK:";
|
|
|
|
match_len = os_strlen(match);
|
|
|
|
if (os_strncasecmp(h, match, match_len) == 0) {
|
|
|
|
h += match_len;
|
|
|
|
while (*h == ' ' || *h == '\t')
|
|
|
|
h++;
|
|
|
|
len = end - h;
|
|
|
|
os_free(callback_urls);
|
|
|
|
callback_urls = os_malloc(len + 1);
|
|
|
|
if (callback_urls == NULL) {
|
|
|
|
ret = HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
os_memcpy(callback_urls, h, len);
|
|
|
|
callback_urls[len] = 0;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
/* SID is only for renewal */
|
|
|
|
match = "SID:";
|
|
|
|
match_len = os_strlen(match);
|
|
|
|
if (os_strncasecmp(h, match, match_len) == 0) {
|
|
|
|
h += match_len;
|
|
|
|
while (*h == ' ' || *h == '\t')
|
|
|
|
h++;
|
|
|
|
match = "uuid:";
|
|
|
|
match_len = os_strlen(match);
|
|
|
|
if (os_strncasecmp(h, match, match_len) != 0) {
|
|
|
|
ret = HTTP_BAD_REQUEST;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
h += match_len;
|
|
|
|
while (*h == ' ' || *h == '\t')
|
|
|
|
h++;
|
|
|
|
if (uuid_str2bin(h, uuid)) {
|
|
|
|
ret = HTTP_BAD_REQUEST;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
got_uuid = 1;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
/* TIMEOUT is requested timeout, but apparently we can
|
|
|
|
* just ignore this.
|
|
|
|
*/
|
|
|
|
}
|
|
|
|
|
|
|
|
if (got_uuid) {
|
|
|
|
/* renewal */
|
|
|
|
if (callback_urls) {
|
|
|
|
ret = HTTP_BAD_REQUEST;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
s = subscription_renew(sm, uuid);
|
|
|
|
if (s == NULL) {
|
|
|
|
ret = HTTP_PRECONDITION_FAILED;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
} else if (callback_urls) {
|
|
|
|
if (!got_nt) {
|
|
|
|
ret = HTTP_PRECONDITION_FAILED;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
s = subscription_start(sm, callback_urls);
|
|
|
|
if (s == NULL) {
|
|
|
|
ret = HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
callback_urls = NULL; /* is now owned by subscription */
|
|
|
|
} else {
|
|
|
|
ret = HTTP_PRECONDITION_FAILED;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* success */
|
|
|
|
http_put_reply_code(buf, HTTP_OK);
|
|
|
|
wpabuf_put_str(buf, http_server_hdr);
|
|
|
|
wpabuf_put_str(buf, http_connection_close);
|
|
|
|
wpabuf_put_str(buf, "Content-Length: 0\r\n");
|
|
|
|
wpabuf_put_str(buf, "SID: uuid:");
|
|
|
|
/* subscription id */
|
|
|
|
b = wpabuf_put(buf, 0);
|
|
|
|
uuid_bin2str(s->uuid, b, 80);
|
|
|
|
wpabuf_put(buf, os_strlen(b));
|
|
|
|
wpabuf_put_str(buf, "\r\n");
|
|
|
|
wpabuf_printf(buf, "Timeout: Second-%d\r\n", UPNP_SUBSCRIBE_SEC);
|
|
|
|
http_put_date(buf);
|
|
|
|
/* And empty line to terminate header: */
|
|
|
|
wpabuf_put_str(buf, "\r\n");
|
|
|
|
|
|
|
|
send_wpabuf(c->sd, buf);
|
|
|
|
wpabuf_free(buf);
|
|
|
|
os_free(callback_urls);
|
|
|
|
return;
|
|
|
|
|
|
|
|
error:
|
|
|
|
/* Per UPnP spec:
|
|
|
|
* Errors
|
|
|
|
* Incompatible headers
|
|
|
|
* 400 Bad Request. If SID header and one of NT or CALLBACK headers
|
|
|
|
* are present, the publisher must respond with HTTP error
|
|
|
|
* 400 Bad Request.
|
|
|
|
* Missing or invalid CALLBACK
|
|
|
|
* 412 Precondition Failed. If CALLBACK header is missing or does not
|
|
|
|
* contain a valid HTTP URL, the publisher must respond with HTTP
|
|
|
|
* error 412 Precondition Failed.
|
|
|
|
* Invalid NT
|
|
|
|
* 412 Precondition Failed. If NT header does not equal upnp:event,
|
|
|
|
* the publisher must respond with HTTP error 412 Precondition
|
|
|
|
* Failed.
|
|
|
|
* [For resubscription, use 412 if unknown uuid].
|
|
|
|
* Unable to accept subscription
|
|
|
|
* 5xx. If a publisher is not able to accept a subscription (such as
|
|
|
|
* due to insufficient resources), it must respond with a
|
|
|
|
* HTTP 500-series error code.
|
|
|
|
* 599 Too many subscriptions (not a standard HTTP error)
|
|
|
|
*/
|
|
|
|
http_put_empty(buf, ret);
|
|
|
|
send_wpabuf(c->sd, buf);
|
|
|
|
wpabuf_free(buf);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Given that we have received a header w/ UNSUBSCRIBE, act upon it
|
|
|
|
*
|
|
|
|
* Format of UNSUBSCRIBE (case-insensitive):
|
|
|
|
*
|
|
|
|
* First line must be:
|
|
|
|
* UNSUBSCRIBE /wps_event HTTP/1.1
|
|
|
|
*
|
|
|
|
* Our response (if no error) which includes only required lines is:
|
|
|
|
* HTTP/1.1 200 OK
|
|
|
|
* Content-Length: 0
|
|
|
|
*
|
|
|
|
* Header lines must end with \r\n
|
|
|
|
* Per RFC 2616, content-length: is not required but connection:close
|
|
|
|
* would appear to be required (given that we will be closing it!).
|
|
|
|
*/
|
|
|
|
static void web_connection_parse_unsubscribe(struct web_connection *c,
|
|
|
|
const char *filename)
|
|
|
|
{
|
|
|
|
struct upnp_wps_device_sm *sm = c->sm;
|
|
|
|
struct wpabuf *buf;
|
|
|
|
char *hdr = httpread_hdr_get(c->hread);
|
|
|
|
char *h;
|
|
|
|
char *match;
|
|
|
|
int match_len;
|
|
|
|
char *end;
|
|
|
|
u8 uuid[UUID_LEN];
|
|
|
|
int got_uuid = 0;
|
|
|
|
struct subscription *s = NULL;
|
|
|
|
enum http_reply_code ret = HTTP_INTERNAL_SERVER_ERROR;
|
|
|
|
|
|
|
|
/* Parse/validate headers */
|
|
|
|
h = hdr;
|
|
|
|
/* First line: UNSUBSCRIBE /wps_event HTTP/1.1
|
|
|
|
* has already been parsed.
|
|
|
|
*/
|
|
|
|
if (os_strcasecmp(filename, UPNP_WPS_DEVICE_EVENT_FILE) != 0) {
|
|
|
|
ret = HTTP_PRECONDITION_FAILED;
|
|
|
|
goto send_msg;
|
|
|
|
}
|
2009-02-06 18:04:55 +01:00
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: HTTP UNSUBSCRIBE for event");
|
2009-01-29 17:47:02 +01:00
|
|
|
end = os_strchr(h, '\n');
|
|
|
|
|
|
|
|
for (; end != NULL; h = end + 1) {
|
|
|
|
/* Option line by option line */
|
|
|
|
h = end + 1;
|
|
|
|
end = os_strchr(h, '\n');
|
|
|
|
if (end == NULL)
|
|
|
|
break; /* no unterminated lines allowed */
|
|
|
|
|
|
|
|
/* HOST should refer to us */
|
|
|
|
#if 0
|
|
|
|
match = "HOST:";
|
|
|
|
match_len = os_strlen(match);
|
|
|
|
if (os_strncasecmp(h, match, match_len) == 0) {
|
|
|
|
h += match_len;
|
|
|
|
while (*h == ' ' || *h == '\t')
|
|
|
|
h++;
|
|
|
|
.....
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
/* SID is only for renewal */
|
|
|
|
match = "SID:";
|
|
|
|
match_len = os_strlen(match);
|
|
|
|
if (os_strncasecmp(h, match, match_len) == 0) {
|
|
|
|
h += match_len;
|
|
|
|
while (*h == ' ' || *h == '\t')
|
|
|
|
h++;
|
|
|
|
match = "uuid:";
|
|
|
|
match_len = os_strlen(match);
|
|
|
|
if (os_strncasecmp(h, match, match_len) != 0) {
|
|
|
|
ret = HTTP_BAD_REQUEST;
|
|
|
|
goto send_msg;
|
|
|
|
}
|
|
|
|
h += match_len;
|
|
|
|
while (*h == ' ' || *h == '\t')
|
|
|
|
h++;
|
|
|
|
if (uuid_str2bin(h, uuid)) {
|
|
|
|
ret = HTTP_BAD_REQUEST;
|
|
|
|
goto send_msg;
|
|
|
|
}
|
|
|
|
got_uuid = 1;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (got_uuid) {
|
|
|
|
s = subscription_find(sm, uuid);
|
|
|
|
if (s) {
|
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: Unsubscribing %p %s",
|
|
|
|
s,
|
|
|
|
(s && s->addr_list &&
|
|
|
|
s->addr_list->domain_and_port) ?
|
|
|
|
s->addr_list->domain_and_port : "-null-");
|
|
|
|
subscription_unlink(s);
|
|
|
|
subscription_destroy(s);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
wpa_printf(MSG_INFO, "WPS UPnP: Unsubscribe fails (not "
|
|
|
|
"found)");
|
|
|
|
ret = HTTP_PRECONDITION_FAILED;
|
|
|
|
goto send_msg;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = HTTP_OK;
|
|
|
|
|
|
|
|
send_msg:
|
|
|
|
buf = wpabuf_alloc(200);
|
|
|
|
if (buf == NULL)
|
|
|
|
return;
|
|
|
|
http_put_empty(buf, ret);
|
|
|
|
send_wpabuf(c->sd, buf);
|
|
|
|
wpabuf_free(buf);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Send error in response to unknown requests */
|
|
|
|
static void web_connection_unimplemented(struct web_connection *c)
|
|
|
|
{
|
|
|
|
struct wpabuf *buf;
|
|
|
|
buf = wpabuf_alloc(200);
|
|
|
|
if (buf == NULL)
|
|
|
|
return;
|
|
|
|
http_put_empty(buf, HTTP_UNIMPLEMENTED);
|
|
|
|
send_wpabuf(c->sd, buf);
|
|
|
|
wpabuf_free(buf);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Called when we have gotten an apparently valid http request.
|
|
|
|
*/
|
|
|
|
static void web_connection_check_data(struct web_connection *c)
|
|
|
|
{
|
|
|
|
struct httpread *hread = c->hread;
|
|
|
|
enum httpread_hdr_type htype = httpread_hdr_type_get(hread);
|
|
|
|
/* char *data = httpread_data_get(hread); */
|
|
|
|
char *filename = httpread_uri_get(hread);
|
|
|
|
|
|
|
|
c->done = 1;
|
|
|
|
if (!filename) {
|
|
|
|
wpa_printf(MSG_INFO, "WPS UPnP: Could not get HTTP URI");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
/* Trim leading slashes from filename */
|
|
|
|
while (*filename == '/')
|
|
|
|
filename++;
|
|
|
|
|
2009-02-06 18:04:55 +01:00
|
|
|
wpa_printf(MSG_DEBUG, "WPS UPnP: Got HTTP request type %d from %s:%d",
|
|
|
|
htype, inet_ntoa(c->cli_addr.sin_addr),
|
|
|
|
htons(c->cli_addr.sin_port));
|
2009-01-29 17:47:02 +01:00
|
|
|
|
|
|
|
switch (htype) {
|
|
|
|
case HTTPREAD_HDR_TYPE_GET:
|
|
|
|
web_connection_parse_get(c, filename);
|
|
|
|
break;
|
|
|
|
case HTTPREAD_HDR_TYPE_POST:
|
|
|
|
web_connection_parse_post(c, filename);
|
|
|
|
break;
|
|
|
|
case HTTPREAD_HDR_TYPE_SUBSCRIBE:
|
|
|
|
web_connection_parse_subscribe(c, filename);
|
|
|
|
break;
|
|
|
|
case HTTPREAD_HDR_TYPE_UNSUBSCRIBE:
|
|
|
|
web_connection_parse_unsubscribe(c, filename);
|
|
|
|
break;
|
|
|
|
/* We are not required to support M-POST; just plain
|
|
|
|
* POST is supposed to work, so we only support that.
|
|
|
|
* If for some reason we need to support M-POST, it is
|
|
|
|
* mostly the same as POST, with small differences.
|
|
|
|
*/
|
|
|
|
default:
|
|
|
|
/* Send 501 for anything else */
|
|
|
|
web_connection_unimplemented(c);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* called back when we have gotten request */
|
|
|
|
static void web_connection_got_file_handler(struct httpread *handle,
|
|
|
|
void *cookie,
|
|
|
|
enum httpread_event en)
|
|
|
|
{
|
|
|
|
struct web_connection *c = cookie;
|
|
|
|
|
|
|
|
if (en == HTTPREAD_EVENT_FILE_READY)
|
|
|
|
web_connection_check_data(c);
|
|
|
|
web_connection_stop(c);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* web_connection_start - Start web connection
|
|
|
|
* @sm: WPS UPnP state machine from upnp_wps_device_init()
|
|
|
|
* @sd: Socket descriptor
|
2009-02-06 18:04:55 +01:00
|
|
|
* @addr: Client address
|
2009-01-29 17:47:02 +01:00
|
|
|
*
|
2009-02-06 18:04:55 +01:00
|
|
|
* The socket descriptor sd is handed over for ownership by the WPS UPnP
|
2009-01-29 17:47:02 +01:00
|
|
|
* state machine.
|
|
|
|
*/
|
|
|
|
static void web_connection_start(struct upnp_wps_device_sm *sm,
|
2009-02-06 18:04:55 +01:00
|
|
|
int sd, struct sockaddr_in *addr)
|
2009-01-29 17:47:02 +01:00
|
|
|
{
|
|
|
|
struct web_connection *c = NULL;
|
|
|
|
|
|
|
|
/* if too many connections, bail */
|
|
|
|
if (sm->n_web_connections >= MAX_WEB_CONNECTIONS) {
|
|
|
|
close(sd);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
c = os_zalloc(sizeof(*c));
|
|
|
|
if (c == NULL)
|
|
|
|
return;
|
2009-02-06 18:04:55 +01:00
|
|
|
os_memcpy(&c->cli_addr, addr, sizeof(c->cli_addr));
|
2009-01-29 17:47:02 +01:00
|
|
|
c->sm = sm;
|
|
|
|
c->sd = sd;
|
|
|
|
#if 0
|
|
|
|
/*
|
|
|
|
* Setting non-blocking should not be necessary for read, and can mess
|
|
|
|
* up sending where blocking might be better.
|
|
|
|
*/
|
|
|
|
if (fcntl(sd, F_SETFL, O_NONBLOCK) != 0)
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
c->hread = httpread_create(c->sd, web_connection_got_file_handler,
|
|
|
|
c /* cookie */,
|
|
|
|
WEB_CONNECTION_MAX_READ,
|
|
|
|
WEB_CONNECTION_TIMEOUT_SEC);
|
|
|
|
if (c->hread == NULL)
|
|
|
|
goto fail;
|
|
|
|
if (sm->web_connections) {
|
|
|
|
c->next = sm->web_connections;
|
|
|
|
c->prev = c->next->prev;
|
|
|
|
c->prev->next = c;
|
|
|
|
c->next->prev = c;
|
|
|
|
} else {
|
|
|
|
sm->web_connections = c->next = c->prev = c;
|
|
|
|
}
|
|
|
|
sm->n_web_connections++;
|
|
|
|
return;
|
|
|
|
|
|
|
|
fail:
|
|
|
|
if (c)
|
|
|
|
web_connection_stop(c);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Listening for web connections
|
|
|
|
* We have a single TCP listening port, and hand off connections as we get
|
|
|
|
* them.
|
|
|
|
*/
|
|
|
|
|
|
|
|
void web_listener_stop(struct upnp_wps_device_sm *sm)
|
|
|
|
{
|
|
|
|
if (sm->web_sd_registered) {
|
|
|
|
sm->web_sd_registered = 0;
|
|
|
|
eloop_unregister_sock(sm->web_sd, EVENT_TYPE_READ);
|
|
|
|
}
|
|
|
|
if (sm->web_sd >= 0)
|
|
|
|
close(sm->web_sd);
|
|
|
|
sm->web_sd = -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void web_listener_handler(int sd, void *eloop_ctx, void *sock_ctx)
|
|
|
|
{
|
|
|
|
struct sockaddr_in addr;
|
|
|
|
socklen_t addr_len = sizeof(addr);
|
|
|
|
struct upnp_wps_device_sm *sm = sock_ctx;
|
|
|
|
int new_sd;
|
|
|
|
|
|
|
|
/* Create state for new connection */
|
|
|
|
/* Remember so we can cancel if need be */
|
|
|
|
new_sd = accept(sm->web_sd, (struct sockaddr *) &addr, &addr_len);
|
|
|
|
if (new_sd < 0) {
|
|
|
|
wpa_printf(MSG_ERROR, "WPS UPnP: web listener accept "
|
|
|
|
"errno=%d (%s) web_sd=%d",
|
|
|
|
errno, strerror(errno), sm->web_sd);
|
|
|
|
return;
|
|
|
|
}
|
2009-02-06 18:04:55 +01:00
|
|
|
web_connection_start(sm, new_sd, &addr);
|
2009-01-29 17:47:02 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
int web_listener_start(struct upnp_wps_device_sm *sm)
|
|
|
|
{
|
|
|
|
struct sockaddr_in addr;
|
|
|
|
int port;
|
|
|
|
|
|
|
|
sm->web_sd = socket(AF_INET, SOCK_STREAM, 0);
|
|
|
|
if (sm->web_sd < 0)
|
|
|
|
goto fail;
|
|
|
|
if (fcntl(sm->web_sd, F_SETFL, O_NONBLOCK) != 0)
|
|
|
|
goto fail;
|
|
|
|
port = 49152; /* first non-reserved port */
|
|
|
|
for (;;) {
|
|
|
|
os_memset(&addr, 0, sizeof(addr));
|
|
|
|
addr.sin_family = AF_INET;
|
|
|
|
addr.sin_addr.s_addr = sm->ip_addr;
|
|
|
|
addr.sin_port = htons(port);
|
|
|
|
if (bind(sm->web_sd, (struct sockaddr *) &addr,
|
|
|
|
sizeof(addr)) == 0)
|
|
|
|
break;
|
|
|
|
if (errno == EADDRINUSE) {
|
|
|
|
/* search for unused port */
|
|
|
|
if (++port == 65535)
|
|
|
|
goto fail;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
if (listen(sm->web_sd, 10 /* max backlog */) != 0)
|
|
|
|
goto fail;
|
|
|
|
if (fcntl(sm->web_sd, F_SETFL, O_NONBLOCK) != 0)
|
|
|
|
goto fail;
|
|
|
|
if (eloop_register_sock(sm->web_sd, EVENT_TYPE_READ,
|
|
|
|
web_listener_handler, NULL, sm))
|
|
|
|
goto fail;
|
|
|
|
sm->web_sd_registered = 1;
|
|
|
|
sm->web_port = port;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
fail:
|
|
|
|
/* Error */
|
|
|
|
web_listener_stop(sm);
|
|
|
|
return -1;
|
|
|
|
}
|