minidlna/upnphttp.c
Gleb Smirnoff f9a78d598e Support for pluggable event modules, stage 1. Take out select() loop and associated code into a separate module select.c. Detailed list of changes down below.
The idea is taken from the nginx web server, but much simplified and
almost no copypaste left. This will allow minidlna to use different
event dispatcher APIs, which would be defined at compile time.

My personal goal is to convert minidlna to kqueue(2) on FreeBSD. This
would later allow for kqueue based directory change notification, which
won't conflict with select(2) like the current patch does.
Other platforms will also benefit from the pluggability of the event
system, Linux can switch to epoll(2) or at least to poll(2).

Detailed list of changes:

* event.h [New]
  Our internal API to unify different event dispatch systems.
* select.c [New]
  Much simplified version of nginx's ngx_select_module.c.
* minidlna.c
  - Split out listen socket event processing into separate function
    ProcessListen(), which matches event_process_t type.
  - Create and initialize struct event for the monitor socket, SSDP
    socket, HTTP socket and beacon socket.
  - Simplify and make more precise timeout calculation using
    helper timeval functions from utils.c. Treat gettimeofday() error
    as a fatal event.
  - Rip out all stuff related to select(2). Just call event_module.process().
* upnpevents.c
  - Embed struct event into upnp_event_notify.
  - Merge upnp_event_create_notify() with upnp_event_notify_connect().
    Start connecting immediately after socket creation. Garbage collect
    now useless ECreated state.
  - Make upnp_event_process_notify() of event_process_t type, and use it
    as process callback for upnp_event_notify event.
  - Looks like we always create upnp_event_notify with existing subscriber,
    and never clear it later. Remove checks for obj->sub and assert that it
    is never NULL. Simplifies things.
  - When switching obj state, add/del it to event dispatcher accrodingly.
  - Garbage collect upnpevents_selectfds().
  - Garbage collect select(2) related stuff from upnpevents_processfds().
    Rename function to upnpevents_gc(), since the remaining functionality
    is garbage collecting, not file descriptor processing.
    Actually, this can be simplified even more. We can safely close sockets
    and free objects immediately, eliminating need for upnpevents_gc(). But
    this change would be beyond scope of this commit.
* upnphttp.c, upnphttp.h
  Embed struct event into struct upnphttp. Adjust Process_upnphttp() to match
  event_process_t type. Add/del to event dispatcher once creating/closing a
  socket.
* minissdp.c, minissdp.h
  Make ProcessSSDPRequest() of event_process_t type.
* getifaddr.c, getifaddr.h
  Make ProcessMonitorEvent() of event_process_t type.
2018-01-16 16:53:08 -08:00

2072 lines
51 KiB
C

/* MiniDLNA project
*
* http://sourceforge.net/projects/minidlna/
*
* MiniDLNA media server
* Copyright (C) 2008-2009 Justin Maggard
*
* This file is part of MiniDLNA.
*
* MiniDLNA is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* MiniDLNA 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 MiniDLNA. If not, see <http://www.gnu.org/licenses/>.
*
* Portions of the code from the MiniUPnP project:
*
* Copyright (c) 2006-2007, Thomas Bernard
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/param.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <arpa/inet.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <limits.h>
#include "config.h"
#include "event.h"
#include "upnpglobalvars.h"
#include "upnphttp.h"
#include "upnpdescgen.h"
#include "minidlnapath.h"
#include "upnpsoap.h"
#include "upnpevents.h"
#include "utils.h"
#include "getifaddr.h"
#include "image_utils.h"
#include "log.h"
#include "sql.h"
#include <libexif/exif-loader.h>
#include "tivo_utils.h"
#include "tivo_commands.h"
#include "clients.h"
#include "process.h"
#include "sendfile.h"
#define MAX_BUFFER_SIZE 2147483647
#define MIN_BUFFER_SIZE 65536
#define INIT_STR(s, d) { s.data = d; s.size = sizeof(d); s.off = 0; }
#include "icons.c"
enum event_type {
E_INVALID,
E_SUBSCRIBE,
E_RENEW
};
static void SendResp_icon(struct upnphttp *, char * url);
static void SendResp_albumArt(struct upnphttp *, char * url);
static void SendResp_caption(struct upnphttp *, char * url);
static void SendResp_resizedimg(struct upnphttp *, char * url);
static void SendResp_thumbnail(struct upnphttp *, char * url);
static void SendResp_dlnafile(struct upnphttp *, char * url);
static void Process_upnphttp(struct event *ev);
struct upnphttp *
New_upnphttp(int s)
{
struct upnphttp * ret;
if(s<0)
return NULL;
ret = (struct upnphttp *)malloc(sizeof(struct upnphttp));
if(ret == NULL)
return NULL;
memset(ret, 0, sizeof(struct upnphttp));
ret->ev = (struct event ){ .fd = s, .rdwr = EVENT_READ, .process = Process_upnphttp, .data = ret };
event_module.add(&ret->ev);
return ret;
}
void
CloseSocket_upnphttp(struct upnphttp * h)
{
event_module.del(&h->ev);
if(close(h->ev.fd) < 0)
{
DPRINTF(E_ERROR, L_HTTP, "CloseSocket_upnphttp: close(%d): %s\n", h->ev.fd, strerror(errno));
}
h->ev.fd = -1;
h->state = 100;
}
void
Delete_upnphttp(struct upnphttp * h)
{
if(h)
{
if(h->ev.fd >= 0)
CloseSocket_upnphttp(h);
free(h->req_buf);
free(h->res_buf);
free(h);
}
}
/* parse HttpHeaders of the REQUEST */
static void
ParseHttpHeaders(struct upnphttp * h)
{
int client = 0;
char * line;
char * colon;
char * p;
int n;
line = h->req_buf;
/* TODO : check if req_buf, contentoff are ok */
while(line < (h->req_buf + h->req_contentoff))
{
colon = strchr(line, ':');
if(colon)
{
if(strncasecmp(line, "Content-Length", 14)==0)
{
p = colon;
while(*p && (*p < '0' || *p > '9'))
p++;
h->req_contentlen = atoi(p);
if(h->req_contentlen < 0) {
DPRINTF(E_WARN, L_HTTP, "Invalid Content-Length %d", h->req_contentlen);
h->req_contentlen = 0;
}
}
else if(strncasecmp(line, "SOAPAction", 10)==0)
{
p = colon;
n = 0;
while(*p == ':' || *p == ' ' || *p == '\t')
p++;
while(p[n] >= ' ')
n++;
if(n >= 2 &&
((p[0] == '"' && p[n-1] == '"') ||
(p[0] == '\'' && p[n-1] == '\'')))
{
p++;
n -= 2;
}
h->req_soapAction = p;
h->req_soapActionLen = n;
}
else if(strncasecmp(line, "Callback", 8)==0)
{
p = colon;
while(*p && *p != '<' && *p != '\r' )
p++;
n = 0;
while(p[n] && p[n] != '>' && p[n] != '\r' )
n++;
h->req_Callback = p + 1;
h->req_CallbackLen = MAX(0, n - 1);
}
else if(strncasecmp(line, "SID", 3)==0)
{
//zqiu: fix bug for test 4.0.5
//Skip extra headers like "SIDHEADER: xxxxxx xxx"
for(p=line+3;p<colon;p++)
{
if(!isspace(*p))
{
p = NULL; //unexpected header
break;
}
}
if(p) {
p = colon + 1;
while(isspace(*p))
p++;
n = 0;
while(p[n] && !isspace(p[n]))
n++;
h->req_SID = p;
h->req_SIDLen = n;
}
}
else if(strncasecmp(line, "NT", 2)==0)
{
p = colon + 1;
while(isspace(*p))
p++;
n = 0;
while(p[n] && !isspace(p[n]))
n++;
h->req_NT = p;
h->req_NTLen = n;
}
/* Timeout: Seconds-nnnn */
/* TIMEOUT
Recommended. Requested duration until subscription expires,
either number of seconds or infinite. Recommendation
by a UPnP Forum working committee. Defined by UPnP vendor.
Consists of the keyword "Second-" followed (without an
intervening space) by either an integer or the keyword "infinite". */
else if(strncasecmp(line, "Timeout", 7)==0)
{
p = colon + 1;
while(isspace(*p))
p++;
if(strncasecmp(p, "Second-", 7)==0) {
h->req_Timeout = atoi(p+7);
}
}
// Range: bytes=xxx-yyy
else if(strncasecmp(line, "Range", 5)==0)
{
p = colon + 1;
while(isspace(*p))
p++;
if(strncasecmp(p, "bytes=", 6)==0) {
h->reqflags |= FLAG_RANGE;
h->req_RangeStart = strtoll(p+6, &colon, 10);
h->req_RangeEnd = colon ? atoll(colon+1) : 0;
DPRINTF(E_DEBUG, L_HTTP, "Range Start-End: %lld - %lld\n",
(long long)h->req_RangeStart,
h->req_RangeEnd ? (long long)h->req_RangeEnd : -1);
}
}
else if(strncasecmp(line, "Host", 4)==0)
{
int i;
h->reqflags |= FLAG_HOST;
p = colon + 1;
while(isspace(*p))
p++;
for(n = 0; n < n_lan_addr; n++)
{
for(i = 0; lan_addr[n].str[i]; i++)
{
if(lan_addr[n].str[i] != p[i])
break;
}
if(i && !lan_addr[n].str[i])
{
h->iface = n;
break;
}
}
}
else if(strncasecmp(line, "User-Agent", 10)==0)
{
int i;
/* Skip client detection if we already detected it. */
if( client )
goto next_header;
p = colon + 1;
while(isspace(*p))
p++;
for (i = 0; client_types[i].name; i++)
{
if (client_types[i].match_type != EUserAgent)
continue;
if (strstrc(p, client_types[i].match, '\r') != NULL)
{
client = i;
break;
}
}
}
else if(strncasecmp(line, "X-AV-Client-Info", 16)==0)
{
int i;
/* Skip client detection if we already detected it. */
if( client && client_types[client].type < EStandardDLNA150 )
goto next_header;
p = colon + 1;
while(isspace(*p))
p++;
for (i = 0; client_types[i].name; i++)
{
if (client_types[i].match_type != EXAVClientInfo)
continue;
if (strstrc(p, client_types[i].match, '\r') != NULL)
{
client = i;
break;
}
}
}
else if(strncasecmp(line, "Transfer-Encoding", 17)==0)
{
p = colon + 1;
while(isspace(*p))
p++;
if(strncasecmp(p, "chunked", 7)==0)
{
h->reqflags |= FLAG_CHUNKED;
}
}
else if(strncasecmp(line, "Accept-Language", 15)==0)
{
h->reqflags |= FLAG_LANGUAGE;
}
else if(strncasecmp(line, "getcontentFeatures.dlna.org", 27)==0)
{
p = colon + 1;
while(isspace(*p))
p++;
if( (*p != '1') || !isspace(p[1]) )
h->reqflags |= FLAG_INVALID_REQ;
}
else if(strncasecmp(line, "TimeSeekRange.dlna.org", 22)==0)
{
h->reqflags |= FLAG_TIMESEEK;
}
else if(strncasecmp(line, "PlaySpeed.dlna.org", 18)==0)
{
h->reqflags |= FLAG_PLAYSPEED;
}
else if(strncasecmp(line, "realTimeInfo.dlna.org", 21)==0)
{
h->reqflags |= FLAG_REALTIMEINFO;
}
else if(strncasecmp(line, "getAvailableSeekRange.dlna.org", 21)==0)
{
p = colon + 1;
while(isspace(*p))
p++;
if( (*p != '1') || !isspace(p[1]) )
h->reqflags |= FLAG_INVALID_REQ;
}
else if(strncasecmp(line, "transferMode.dlna.org", 21)==0)
{
p = colon + 1;
while(isspace(*p))
p++;
if(strncasecmp(p, "Streaming", 9)==0)
{
h->reqflags |= FLAG_XFERSTREAMING;
}
if(strncasecmp(p, "Interactive", 11)==0)
{
h->reqflags |= FLAG_XFERINTERACTIVE;
}
if(strncasecmp(p, "Background", 10)==0)
{
h->reqflags |= FLAG_XFERBACKGROUND;
}
}
else if(strncasecmp(line, "getCaptionInfo.sec", 18)==0)
{
h->reqflags |= FLAG_CAPTION;
}
else if(strncasecmp(line, "FriendlyName", 12)==0)
{
int i;
p = colon + 1;
while(isspace(*p))
p++;
for (i = 0; client_types[i].name; i++)
{
if (client_types[i].match_type != EFriendlyName)
continue;
if (strstrc(p, client_types[i].match, '\r') != NULL)
{
client = i;
break;
}
}
}
else if(strncasecmp(line, "uctt.upnp.org:", 14)==0)
{
/* Conformance testing */
SETFLAG(DLNA_STRICT_MASK);
}
}
next_header:
line = strstr(line, "\r\n");
if (!line)
return;
line += 2;
}
if( h->reqflags & FLAG_CHUNKED )
{
char *endptr;
h->req_chunklen = -1;
if( h->req_buflen <= h->req_contentoff )
return;
while( (line < (h->req_buf + h->req_buflen)) &&
(h->req_chunklen = strtol(line, &endptr, 16)) &&
(endptr != line) )
{
endptr = strstr(endptr, "\r\n");
if (!endptr)
{
return;
}
line = endptr+h->req_chunklen+2;
}
if( endptr == line )
{
h->req_chunklen = -1;
return;
}
}
/* If the client type wasn't found, search the cache.
* This is done because a lot of clients like to send a
* different User-Agent with different types of requests. */
h->req_client = SearchClientCache(h->clientaddr, 0);
/* Add this client to the cache if it's not there already. */
if (!h->req_client)
{
h->req_client = AddClientCache(h->clientaddr, client);
}
else if (client)
{
enum client_types type = client_types[client].type;
enum client_types ctype = h->req_client->type->type;
/* If we know the client and our new detection is generic, use our cached info */
/* If we detected a Samsung Series B earlier, don't overwrite it with Series A info */
if ((ctype && ctype < EStandardDLNA150 && type >= EStandardDLNA150) ||
(ctype == ESamsungSeriesB && type == ESamsungSeriesA))
return;
h->req_client->type = &client_types[client];
h->req_client->age = time(NULL);
}
}
/* very minimalistic 400 error message */
static void
Send400(struct upnphttp * h)
{
static const char body400[] =
"<HTML><HEAD><TITLE>400 Bad Request</TITLE></HEAD>"
"<BODY><H1>Bad Request</H1>The request is invalid"
" for this HTTP version.</BODY></HTML>\r\n";
h->respflags = FLAG_HTML;
BuildResp2_upnphttp(h, 400, "Bad Request",
body400, sizeof(body400) - 1);
SendResp_upnphttp(h);
CloseSocket_upnphttp(h);
}
/* very minimalistic 403 error message */
static void
Send403(struct upnphttp * h)
{
static const char body403[] =
"<HTML><HEAD><TITLE>403 Forbidden</TITLE></HEAD>"
"<BODY><H1>Forbidden</H1>You don't have permission to access this resource."
"</BODY></HTML>\r\n";
h->respflags = FLAG_HTML;
BuildResp2_upnphttp(h, 403, "Forbidden",
body403, sizeof(body403) - 1);
SendResp_upnphttp(h);
CloseSocket_upnphttp(h);
}
/* very minimalistic 404 error message */
static void
Send404(struct upnphttp * h)
{
static const char body404[] =
"<HTML><HEAD><TITLE>404 Not Found</TITLE></HEAD>"
"<BODY><H1>Not Found</H1>The requested URL was not found"
" on this server.</BODY></HTML>\r\n";
h->respflags = FLAG_HTML;
BuildResp2_upnphttp(h, 404, "Not Found",
body404, sizeof(body404) - 1);
SendResp_upnphttp(h);
CloseSocket_upnphttp(h);
}
/* very minimalistic 406 error message */
static void
Send406(struct upnphttp * h)
{
static const char body406[] =
"<HTML><HEAD><TITLE>406 Not Acceptable</TITLE></HEAD>"
"<BODY><H1>Not Acceptable</H1>An unsupported operation"
" was requested.</BODY></HTML>\r\n";
h->respflags = FLAG_HTML;
BuildResp2_upnphttp(h, 406, "Not Acceptable",
body406, sizeof(body406) - 1);
SendResp_upnphttp(h);
CloseSocket_upnphttp(h);
}
/* very minimalistic 416 error message */
static void
Send416(struct upnphttp * h)
{
static const char body416[] =
"<HTML><HEAD><TITLE>416 Requested Range Not Satisfiable</TITLE></HEAD>"
"<BODY><H1>Requested Range Not Satisfiable</H1>The requested range"
" was outside the file's size.</BODY></HTML>\r\n";
h->respflags = FLAG_HTML;
BuildResp2_upnphttp(h, 416, "Requested Range Not Satisfiable",
body416, sizeof(body416) - 1);
SendResp_upnphttp(h);
CloseSocket_upnphttp(h);
}
/* very minimalistic 500 error message */
void
Send500(struct upnphttp * h)
{
static const char body500[] =
"<HTML><HEAD><TITLE>500 Internal Server Error</TITLE></HEAD>"
"<BODY><H1>Internal Server Error</H1>Server encountered "
"and Internal Error.</BODY></HTML>\r\n";
h->respflags = FLAG_HTML;
BuildResp2_upnphttp(h, 500, "Internal Server Errror",
body500, sizeof(body500) - 1);
SendResp_upnphttp(h);
CloseSocket_upnphttp(h);
}
/* very minimalistic 501 error message */
void
Send501(struct upnphttp * h)
{
static const char body501[] =
"<HTML><HEAD><TITLE>501 Not Implemented</TITLE></HEAD>"
"<BODY><H1>Not Implemented</H1>The HTTP Method "
"is not implemented by this server.</BODY></HTML>\r\n";
h->respflags = FLAG_HTML;
BuildResp2_upnphttp(h, 501, "Not Implemented",
body501, sizeof(body501) - 1);
SendResp_upnphttp(h);
CloseSocket_upnphttp(h);
}
/* Sends the description generated by the parameter */
static void
sendXMLdesc(struct upnphttp * h, char * (f)(int *))
{
char * desc;
int len;
desc = f(&len);
if(!desc)
{
DPRINTF(E_ERROR, L_HTTP, "Failed to generate XML description\n");
Send500(h);
return;
}
BuildResp_upnphttp(h, desc, len);
SendResp_upnphttp(h);
CloseSocket_upnphttp(h);
free(desc);
}
#ifdef READYNAS
static void
SendResp_readynas_admin(struct upnphttp * h)
{
char body[128];
int l;
h->respflags = FLAG_HTML;
l = snprintf(body, sizeof(body), "<meta http-equiv=\"refresh\" content=\"0; url=https://%s/admin/\">",
lan_addr[h->iface].str);
BuildResp_upnphttp(h, body, l);
SendResp_upnphttp(h);
CloseSocket_upnphttp(h);
}
#endif
static void
SendResp_presentation(struct upnphttp * h)
{
struct string_s str;
char body[4096];
int a, v, p, i;
INIT_STR(str, body);
h->respflags = FLAG_HTML;
a = sql_get_int_field(db, "SELECT count(*) from DETAILS where MIME glob 'a*'");
v = sql_get_int_field(db, "SELECT count(*) from DETAILS where MIME glob 'v*'");
p = sql_get_int_field(db, "SELECT count(*) from DETAILS where MIME glob 'i*'");
strcatf(&str,
"<HTML><HEAD><TITLE>" SERVER_NAME " " MINIDLNA_VERSION "</TITLE></HEAD>"
"<BODY><div style=\"text-align: center\">"
"<h2>" SERVER_NAME " status</h2></div>");
strcatf(&str,
"<h3>Media library</h3>"
"<table border=1 cellpadding=10>"
"<tr><td>Audio files</td><td>%d</td></tr>"
"<tr><td>Video files</td><td>%d</td></tr>"
"<tr><td>Image files</td><td>%d</td></tr>"
"</table>", a, v, p);
if (GETFLAG(SCANNING_MASK))
strcatf(&str,
"<br><i>* Media scan in progress</i><br>");
strcatf(&str,
"<h3>Connected clients</h3>"
"<table border=1 cellpadding=10>"
"<tr><td>ID</td><td>Type</td><td>IP Address</td><td>HW Address</td><td>Connections</td></tr>");
for (i = 0; i < CLIENT_CACHE_SLOTS; i++)
{
if (!clients[i].addr.s_addr)
continue;
strcatf(&str, "<tr><td>%d</td><td>%s</td><td>%s</td><td>%02X:%02X:%02X:%02X:%02X:%02X</td><td>%d</td></tr>",
i, clients[i].type->name, inet_ntoa(clients[i].addr),
clients[i].mac[0], clients[i].mac[1], clients[i].mac[2],
clients[i].mac[3], clients[i].mac[4], clients[i].mac[5], clients[i].connections);
}
strcatf(&str, "</table>");
strcatf(&str, "<br>%d connection%s currently open<br>", number_of_children, (number_of_children == 1 ? "" : "s"));
strcatf(&str, "</BODY></HTML>\r\n");
BuildResp_upnphttp(h, str.data, str.off);
SendResp_upnphttp(h);
CloseSocket_upnphttp(h);
}
/* ProcessHTTPPOST_upnphttp()
* executes the SOAP query if it is possible */
static void
ProcessHTTPPOST_upnphttp(struct upnphttp * h)
{
if((h->req_buflen - h->req_contentoff) >= h->req_contentlen)
{
if(h->req_soapAction)
{
/* we can process the request */
DPRINTF(E_DEBUG, L_HTTP, "SOAPAction: %.*s\n", h->req_soapActionLen, h->req_soapAction);
ExecuteSoapAction(h,
h->req_soapAction,
h->req_soapActionLen);
}
else
{
static const char err400str[] =
"<html><body>Bad request</body></html>";
DPRINTF(E_WARN, L_HTTP, "No SOAPAction in HTTP headers\n");
h->respflags = FLAG_HTML;
BuildResp2_upnphttp(h, 400, "Bad Request",
err400str, sizeof(err400str) - 1);
SendResp_upnphttp(h);
CloseSocket_upnphttp(h);
}
}
else
{
/* waiting for remaining data */
h->state = 1;
}
}
static int
check_event(struct upnphttp *h)
{
enum event_type type;
if (h->req_Callback)
{
if (h->req_SID || !h->req_NT)
{
BuildResp2_upnphttp(h, 400, "Bad Request",
"<html><body>Bad request</body></html>", 37);
type = E_INVALID;
}
else if (strncmp(h->req_Callback, "http://", 7) != 0 ||
strncmp(h->req_NT, "upnp:event", h->req_NTLen) != 0)
{
/* 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*/
BuildResp2_upnphttp(h, 412, "Precondition Failed", 0, 0);
type = E_INVALID;
}
else
type = E_SUBSCRIBE;
}
else if (h->req_SID)
{
/* subscription renew */
if (h->req_NT)
{
BuildResp2_upnphttp(h, 400, "Bad Request",
"<html><body>Bad request</body></html>", 37);
type = E_INVALID;
}
else
type = E_RENEW;
}
else
{
BuildResp2_upnphttp(h, 412, "Precondition Failed", 0, 0);
type = E_INVALID;
}
return type;
}
static void
ProcessHTTPSubscribe_upnphttp(struct upnphttp * h, const char * path)
{
const char * sid;
enum event_type type;
DPRINTF(E_DEBUG, L_HTTP, "ProcessHTTPSubscribe %s\n", path);
DPRINTF(E_DEBUG, L_HTTP, "Callback '%.*s' Timeout=%d\n",
h->req_CallbackLen, h->req_Callback, h->req_Timeout);
DPRINTF(E_DEBUG, L_HTTP, "SID '%.*s'\n", h->req_SIDLen, h->req_SID);
type = check_event(h);
if (type == E_SUBSCRIBE)
{
/* - add to the subscriber list
* - respond HTTP/x.x 200 OK
* - Send the initial event message */
/* Server:, SID:; Timeout: Second-(xx|infinite) */
sid = upnpevents_addSubscriber(path, h->req_Callback,
h->req_CallbackLen, h->req_Timeout);
h->respflags = FLAG_TIMEOUT;
if (sid)
{
DPRINTF(E_DEBUG, L_HTTP, "generated sid=%s\n", sid);
h->respflags |= FLAG_SID;
h->req_SID = sid;
h->req_SIDLen = strlen(sid);
}
BuildResp_upnphttp(h, 0, 0);
}
else if (type == E_RENEW)
{
/* subscription renew */
if (renewSubscription(h->req_SID, h->req_SIDLen, h->req_Timeout) < 0)
{
/* Invalid SID
412 Precondition Failed. If a SID does not correspond to a known,
un-expired subscription, the publisher must respond
with HTTP error 412 Precondition Failed. */
BuildResp2_upnphttp(h, 412, "Precondition Failed", 0, 0);
}
else
{
/* A DLNA device must enforce a 5 minute timeout */
h->respflags = FLAG_TIMEOUT;
h->req_Timeout = 300;
h->respflags |= FLAG_SID;
BuildResp_upnphttp(h, 0, 0);
}
}
SendResp_upnphttp(h);
CloseSocket_upnphttp(h);
}
static void
ProcessHTTPUnSubscribe_upnphttp(struct upnphttp * h, const char * path)
{
enum event_type type;
DPRINTF(E_DEBUG, L_HTTP, "ProcessHTTPUnSubscribe %s\n", path);
DPRINTF(E_DEBUG, L_HTTP, "SID '%.*s'\n", h->req_SIDLen, h->req_SID);
/* Remove from the list */
type = check_event(h);
if (type != E_INVALID)
{
if(upnpevents_removeSubscriber(h->req_SID, h->req_SIDLen) < 0)
BuildResp2_upnphttp(h, 412, "Precondition Failed", 0, 0);
else
BuildResp_upnphttp(h, 0, 0);
}
SendResp_upnphttp(h);
CloseSocket_upnphttp(h);
}
/* Parse and process Http Query
* called once all the HTTP headers have been received. */
static void
ProcessHttpQuery_upnphttp(struct upnphttp * h)
{
char HttpCommand[16];
char HttpUrl[512];
char * HttpVer;
char * p;
int i;
p = h->req_buf;
if(!p)
return;
for(i = 0; i<15 && *p && *p != ' ' && *p != '\r'; i++)
HttpCommand[i] = *(p++);
HttpCommand[i] = '\0';
while(*p==' ')
p++;
for(i = 0; i<511 && *p && *p != ' ' && *p != '\r'; i++)
HttpUrl[i] = *(p++);
HttpUrl[i] = '\0';
while(*p==' ')
p++;
HttpVer = h->HttpVer;
for(i = 0; i<15 && *p && *p != '\r'; i++)
HttpVer[i] = *(p++);
HttpVer[i] = '\0';
/* set the interface here initially, in case there is no Host header */
for(i = 0; i<n_lan_addr; i++)
{
if( (h->clientaddr.s_addr & lan_addr[i].mask.s_addr)
== (lan_addr[i].addr.s_addr & lan_addr[i].mask.s_addr))
{
h->iface = i;
break;
}
}
ParseHttpHeaders(h);
/* see if we need to wait for remaining data */
if( (h->reqflags & FLAG_CHUNKED) )
{
if( h->req_chunklen == -1)
{
Send400(h);
return;
}
if( h->req_chunklen )
{
h->state = 2;
return;
}
char *chunkstart, *chunk, *endptr, *endbuf;
chunk = endbuf = chunkstart = h->req_buf + h->req_contentoff;
while( (h->req_chunklen = strtol(chunk, &endptr, 16)) && (endptr != chunk) )
{
endptr = strstr(endptr, "\r\n");
if (!endptr)
{
Send400(h);
return;
}
endptr += 2;
memmove(endbuf, endptr, h->req_chunklen);
endbuf += h->req_chunklen;
chunk = endptr + h->req_chunklen;
}
h->req_contentlen = endbuf - chunkstart;
h->req_buflen = endbuf - h->req_buf;
h->state = 100;
}
DPRINTF(E_DEBUG, L_HTTP, "HTTP REQUEST: %.*s\n", h->req_buflen, h->req_buf);
if(strcmp("POST", HttpCommand) == 0)
{
h->req_command = EPost;
ProcessHTTPPOST_upnphttp(h);
}
else if((strcmp("GET", HttpCommand) == 0) || (strcmp("HEAD", HttpCommand) == 0))
{
if( ((strcmp(h->HttpVer, "HTTP/1.1")==0) && !(h->reqflags & FLAG_HOST)) || (h->reqflags & FLAG_INVALID_REQ) )
{
DPRINTF(E_WARN, L_HTTP, "Invalid request, responding ERROR 400. (No Host specified in HTTP headers?)\n");
Send400(h);
return;
}
/* 7.3.33.4 */
else if( (h->reqflags & (FLAG_TIMESEEK|FLAG_PLAYSPEED)) &&
!(h->reqflags & FLAG_RANGE) )
{
DPRINTF(E_WARN, L_HTTP, "DLNA %s requested, responding ERROR 406\n",
h->reqflags&FLAG_TIMESEEK ? "TimeSeek" : "PlaySpeed");
Send406(h);
return;
}
else if(strcmp("GET", HttpCommand) == 0)
{
h->req_command = EGet;
}
else
{
h->req_command = EHead;
}
if(strcmp(ROOTDESC_PATH, HttpUrl) == 0)
{
/* If it's a Xbox360, we might need a special friendly_name to be recognized */
if( h->req_client && h->req_client->type->type == EXbox )
{
char model_sav[2];
i = 0;
memcpy(model_sav, modelnumber, 2);
strcpy(modelnumber, "1");
if( !strchr(friendly_name, ':') )
{
i = strlen(friendly_name);
snprintf(friendly_name+i, FRIENDLYNAME_MAX_LEN-i, ": 1");
}
sendXMLdesc(h, genRootDesc);
if( i )
friendly_name[i] = '\0';
memcpy(modelnumber, model_sav, 2);
}
else if( h->req_client && h->req_client->type->flags & FLAG_SAMSUNG_DCM10 )
{
sendXMLdesc(h, genRootDescSamsung);
}
else
{
sendXMLdesc(h, genRootDesc);
}
}
else if(strcmp(CONTENTDIRECTORY_PATH, HttpUrl) == 0)
{
sendXMLdesc(h, genContentDirectory);
}
else if(strcmp(CONNECTIONMGR_PATH, HttpUrl) == 0)
{
sendXMLdesc(h, genConnectionManager);
}
else if(strcmp(X_MS_MEDIARECEIVERREGISTRAR_PATH, HttpUrl) == 0)
{
sendXMLdesc(h, genX_MS_MediaReceiverRegistrar);
}
else if(strncmp(HttpUrl, "/MediaItems/", 12) == 0)
{
SendResp_dlnafile(h, HttpUrl+12);
}
else if(strncmp(HttpUrl, "/Thumbnails/", 12) == 0)
{
SendResp_thumbnail(h, HttpUrl+12);
}
else if(strncmp(HttpUrl, "/AlbumArt/", 10) == 0)
{
SendResp_albumArt(h, HttpUrl+10);
}
#ifdef TIVO_SUPPORT
else if(strncmp(HttpUrl, "/TiVoConnect", 12) == 0)
{
if( GETFLAG(TIVO_MASK) )
{
if( *(HttpUrl+12) == '?' )
{
ProcessTiVoCommand(h, HttpUrl+13);
}
else
{
DPRINTF(E_WARN, L_HTTP, "Invalid TiVo request! %s\n", HttpUrl+12);
Send404(h);
}
}
else
{
DPRINTF(E_WARN, L_HTTP, "TiVo request with out TiVo support enabled! %s\n",
HttpUrl+12);
Send404(h);
}
}
#endif
else if(strncmp(HttpUrl, "/Resized/", 9) == 0)
{
SendResp_resizedimg(h, HttpUrl+9);
}
else if(strncmp(HttpUrl, "/icons/", 7) == 0)
{
SendResp_icon(h, HttpUrl+7);
}
else if(strncmp(HttpUrl, "/Captions/", 10) == 0)
{
SendResp_caption(h, HttpUrl+10);
}
else if(strncmp(HttpUrl, "/status", 7) == 0)
{
SendResp_presentation(h);
}
else if(strcmp(HttpUrl, "/") == 0)
{
#ifdef READYNAS
SendResp_readynas_admin(h);
#else
SendResp_presentation(h);
#endif
}
else
{
DPRINTF(E_WARN, L_HTTP, "%s not found, responding ERROR 404\n", HttpUrl);
Send404(h);
}
}
else if(strcmp("SUBSCRIBE", HttpCommand) == 0)
{
h->req_command = ESubscribe;
ProcessHTTPSubscribe_upnphttp(h, HttpUrl);
}
else if(strcmp("UNSUBSCRIBE", HttpCommand) == 0)
{
h->req_command = EUnSubscribe;
ProcessHTTPUnSubscribe_upnphttp(h, HttpUrl);
}
else
{
DPRINTF(E_WARN, L_HTTP, "Unsupported HTTP Command %s\n", HttpCommand);
Send501(h);
}
}
static void
Process_upnphttp(struct event *ev)
{
char buf[2048];
struct upnphttp *h = ev->data;
int n;
switch(h->state)
{
case 0:
n = recv(h->ev.fd, buf, 2048, 0);
if(n<0)
{
DPRINTF(E_ERROR, L_HTTP, "recv (state0): %s\n", strerror(errno));
h->state = 100;
}
else if(n==0)
{
DPRINTF(E_WARN, L_HTTP, "HTTP Connection closed unexpectedly\n");
h->state = 100;
}
else
{
int new_req_buflen;
const char * endheaders;
/* if 1st arg of realloc() is null,
* realloc behaves the same as malloc() */
new_req_buflen = n + h->req_buflen + 1;
if (new_req_buflen >= 1024 * 1024)
{
DPRINTF(E_ERROR, L_HTTP, "Receive headers too large (received %d bytes)\n", new_req_buflen);
h->state = 100;
break;
}
h->req_buf = (char *)realloc(h->req_buf, new_req_buflen);
if (!h->req_buf)
{
DPRINTF(E_ERROR, L_HTTP, "Receive headers: %s\n", strerror(errno));
h->state = 100;
break;
}
memcpy(h->req_buf + h->req_buflen, buf, n);
h->req_buflen += n;
h->req_buf[h->req_buflen] = '\0';
/* search for the string "\r\n\r\n" */
endheaders = strstr(h->req_buf, "\r\n\r\n");
if(endheaders)
{
h->req_contentoff = endheaders - h->req_buf + 4;
h->req_contentlen = h->req_buflen - h->req_contentoff;
ProcessHttpQuery_upnphttp(h);
}
}
break;
case 1:
case 2:
n = recv(h->ev.fd, buf, sizeof(buf), 0);
if(n < 0)
{
DPRINTF(E_ERROR, L_HTTP, "recv (state%d): %s\n", h->state, strerror(errno));
h->state = 100;
}
else if(n == 0)
{
DPRINTF(E_WARN, L_HTTP, "HTTP Connection closed unexpectedly\n");
h->state = 100;
}
else
{
buf[sizeof(buf)-1] = '\0';
/*fwrite(buf, 1, n, stdout);*/ /* debug */
h->req_buf = (char *)realloc(h->req_buf, n + h->req_buflen);
if (!h->req_buf)
{
DPRINTF(E_ERROR, L_HTTP, "Receive request body: %s\n", strerror(errno));
h->state = 100;
break;
}
memcpy(h->req_buf + h->req_buflen, buf, n);
h->req_buflen += n;
if((h->req_buflen - h->req_contentoff) >= h->req_contentlen)
{
/* Need the struct to point to the realloc'd memory locations */
if( h->state == 1 )
{
ParseHttpHeaders(h);
ProcessHTTPPOST_upnphttp(h);
}
else if( h->state == 2 )
{
ProcessHttpQuery_upnphttp(h);
}
}
}
break;
default:
DPRINTF(E_WARN, L_HTTP, "Unexpected state: %d\n", h->state);
}
}
/* with response code and response message
* also allocate enough memory */
void
BuildHeader_upnphttp(struct upnphttp * h, int respcode,
const char * respmsg,
int bodylen)
{
static const char httpresphead[] =
"%s %d %s\r\n"
"Content-Type: %s\r\n"
"Connection: close\r\n"
"Content-Length: %d\r\n"
"Server: " MINIDLNA_SERVER_STRING "\r\n";
time_t curtime = time(NULL);
char date[30];
int templen;
struct string_s res;
if(!h->res_buf)
{
templen = sizeof(httpresphead) + 256 + bodylen;
h->res_buf = (char *)malloc(templen);
h->res_buf_alloclen = templen;
}
res.data = h->res_buf;
res.size = h->res_buf_alloclen;
res.off = 0;
strcatf(&res, httpresphead, "HTTP/1.1",
respcode, respmsg,
(h->respflags&FLAG_HTML)?"text/html":"text/xml; charset=\"utf-8\"",
bodylen);
/* Additional headers */
if(h->respflags & FLAG_TIMEOUT) {
strcatf(&res, "Timeout: Second-");
if(h->req_Timeout) {
strcatf(&res, "%d\r\n", h->req_Timeout);
} else {
strcatf(&res, "300\r\n");
}
}
if(h->respflags & FLAG_SID) {
strcatf(&res, "SID: %.*s\r\n", h->req_SIDLen, h->req_SID);
}
if(h->reqflags & FLAG_LANGUAGE) {
strcatf(&res, "Content-Language: en\r\n");
}
strftime(date, 30,"%a, %d %b %Y %H:%M:%S GMT" , gmtime(&curtime));
strcatf(&res, "Date: %s\r\n", date);
strcatf(&res, "EXT:\r\n");
strcatf(&res, "\r\n");
h->res_buflen = res.off;
if(h->res_buf_alloclen < (h->res_buflen + bodylen))
{
h->res_buf = (char *)realloc(h->res_buf, (h->res_buflen + bodylen));
h->res_buf_alloclen = h->res_buflen + bodylen;
}
}
void
BuildResp2_upnphttp(struct upnphttp * h, int respcode,
const char * respmsg,
const char * body, int bodylen)
{
BuildHeader_upnphttp(h, respcode, respmsg, bodylen);
if( h->req_command == EHead )
return;
if(body)
memcpy(h->res_buf + h->res_buflen, body, bodylen);
h->res_buflen += bodylen;
}
/* responding 200 OK ! */
void
BuildResp_upnphttp(struct upnphttp *h, const char *body, int bodylen)
{
BuildResp2_upnphttp(h, 200, "OK", body, bodylen);
}
void
SendResp_upnphttp(struct upnphttp * h)
{
int n;
DPRINTF(E_DEBUG, L_HTTP, "HTTP RESPONSE: %.*s\n", h->res_buflen, h->res_buf);
n = send(h->ev.fd, h->res_buf, h->res_buflen, 0);
if(n<0)
{
DPRINTF(E_ERROR, L_HTTP, "send(res_buf): %s\n", strerror(errno));
}
else if(n < h->res_buflen)
{
/* TODO : handle correctly this case */
DPRINTF(E_ERROR, L_HTTP, "send(res_buf): %d bytes sent (out of %d)\n",
n, h->res_buflen);
}
}
static int
send_data(struct upnphttp * h, char * header, size_t size, int flags)
{
int n;
n = send(h->ev.fd, header, size, flags);
if(n<0)
{
DPRINTF(E_ERROR, L_HTTP, "send(res_buf): %s\n", strerror(errno));
}
else if(n < h->res_buflen)
{
/* TODO : handle correctly this case */
DPRINTF(E_ERROR, L_HTTP, "send(res_buf): %d bytes sent (out of %d)\n",
n, h->res_buflen);
}
else
{
return 0;
}
return 1;
}
static void
send_file(struct upnphttp * h, int sendfd, off_t offset, off_t end_offset)
{
off_t send_size;
off_t ret;
char *buf = NULL;
#if HAVE_SENDFILE
int try_sendfile = 1;
#endif
while( offset <= end_offset )
{
#if HAVE_SENDFILE
if( try_sendfile )
{
send_size = ( ((end_offset - offset) < MAX_BUFFER_SIZE) ? (end_offset - offset + 1) : MAX_BUFFER_SIZE);
ret = sys_sendfile(h->ev.fd, sendfd, &offset, send_size);
if( ret == -1 )
{
DPRINTF(E_DEBUG, L_HTTP, "sendfile error :: error no. %d [%s]\n", errno, strerror(errno));
/* If sendfile isn't supported on the filesystem, don't bother trying to use it again. */
if( errno == EOVERFLOW || errno == EINVAL )
try_sendfile = 0;
else if( errno != EAGAIN )
break;
}
else
{
//DPRINTF(E_DEBUG, L_HTTP, "sent %lld bytes to %d. offset is now %lld.\n", ret, h->socket, offset);
continue;
}
}
#endif
/* Fall back to regular I/O */
if( !buf )
buf = malloc(MIN_BUFFER_SIZE);
send_size = (((end_offset - offset) < MIN_BUFFER_SIZE) ? (end_offset - offset + 1) : MIN_BUFFER_SIZE);
lseek(sendfd, offset, SEEK_SET);
ret = read(sendfd, buf, send_size);
if( ret == -1 ) {
DPRINTF(E_DEBUG, L_HTTP, "read error :: error no. %d [%s]\n", errno, strerror(errno));
if( errno == EAGAIN )
continue;
else
break;
}
ret = write(h->ev.fd, buf, ret);
if( ret == -1 ) {
DPRINTF(E_DEBUG, L_HTTP, "write error :: error no. %d [%s]\n", errno, strerror(errno));
if( errno == EAGAIN )
continue;
else
break;
}
offset += ret;
}
free(buf);
}
static void
start_dlna_header(struct string_s *str, int respcode, const char *tmode, const char *mime)
{
char date[30];
time_t now;
now = time(NULL);
strftime(date, sizeof(date),"%a, %d %b %Y %H:%M:%S GMT" , gmtime(&now));
strcatf(str, "HTTP/1.1 %d OK\r\n"
"Connection: close\r\n"
"Date: %s\r\n"
"Server: " MINIDLNA_SERVER_STRING "\r\n"
"EXT:\r\n"
"realTimeInfo.dlna.org: DLNA.ORG_TLAG=*\r\n"
"transferMode.dlna.org: %s\r\n"
"Content-Type: %s\r\n",
respcode, date, tmode, mime);
}
static int
_open_file(const char *orig_path)
{
struct media_dir_s *media_path;
char buf[PATH_MAX];
const char *path;
int fd;
if (!GETFLAG(WIDE_LINKS_MASK))
{
path = realpath(orig_path, buf);
if (!path)
{
DPRINTF(E_ERROR, L_HTTP, "Error resolving path %s: %s\n",
orig_path, strerror(errno));
return -1;
}
for (media_path = media_dirs; media_path; media_path = media_path->next)
{
if (strncmp(path, media_path->path, strlen(media_path->path)) == 0)
break;
}
if (!media_path && strncmp(path, db_path, strlen(db_path)))
{
DPRINTF(E_ERROR, L_HTTP, "Rejecting wide link %s -> %s\n",
orig_path, path);
return -403;
}
}
else
path = orig_path;
fd = open(path, O_RDONLY);
if (fd < 0)
DPRINTF(E_ERROR, L_HTTP, "Error opening %s\n", path);
return fd;
}
static void
SendResp_icon(struct upnphttp * h, char * icon)
{
char header[512];
char mime[12] = "image/";
char *data;
int size;
struct string_s str;
if( strcmp(icon, "sm.png") == 0 )
{
DPRINTF(E_DEBUG, L_HTTP, "Sending small PNG icon\n");
data = (char *)png_sm;
size = sizeof(png_sm)-1;
strcpy(mime+6, "png");
}
else if( strcmp(icon, "lrg.png") == 0 )
{
DPRINTF(E_DEBUG, L_HTTP, "Sending large PNG icon\n");
data = (char *)png_lrg;
size = sizeof(png_lrg)-1;
strcpy(mime+6, "png");
}
else if( strcmp(icon, "sm.jpg") == 0 )
{
DPRINTF(E_DEBUG, L_HTTP, "Sending small JPEG icon\n");
data = (char *)jpeg_sm;
size = sizeof(jpeg_sm)-1;
strcpy(mime+6, "jpeg");
}
else if( strcmp(icon, "lrg.jpg") == 0 )
{
DPRINTF(E_DEBUG, L_HTTP, "Sending large JPEG icon\n");
data = (char *)jpeg_lrg;
size = sizeof(jpeg_lrg)-1;
strcpy(mime+6, "jpeg");
}
else
{
DPRINTF(E_WARN, L_HTTP, "Invalid icon request: %s\n", icon);
Send404(h);
return;
}
INIT_STR(str, header);
start_dlna_header(&str, 200, "Interactive", mime);
strcatf(&str, "Content-Length: %d\r\n\r\n", size);
if( send_data(h, str.data, str.off, MSG_MORE) == 0 )
{
if( h->req_command != EHead )
send_data(h, data, size, 0);
}
CloseSocket_upnphttp(h);
}
static void
SendResp_albumArt(struct upnphttp * h, char * object)
{
char header[512];
char *path;
off_t size;
long long id;
int fd;
struct string_s str;
if( h->reqflags & (FLAG_XFERSTREAMING|FLAG_RANGE) )
{
DPRINTF(E_WARN, L_HTTP, "Client tried to specify transferMode as Streaming with an image!\n");
Send406(h);
return;
}
id = strtoll(object, NULL, 10);
path = sql_get_text_field(db, "SELECT PATH from ALBUM_ART where ID = '%lld'", id);
if( !path )
{
DPRINTF(E_WARN, L_HTTP, "ALBUM_ART ID %s not found, responding ERROR 404\n", object);
Send404(h);
return;
}
DPRINTF(E_INFO, L_HTTP, "Serving album art ID: %lld [%s]\n", id, path);
fd = _open_file(path);
if( fd < 0 ) {
sqlite3_free(path);
if (fd == -403)
Send403(h);
else
Send404(h);
return;
}
sqlite3_free(path);
size = lseek(fd, 0, SEEK_END);
lseek(fd, 0, SEEK_SET);
INIT_STR(str, header);
start_dlna_header(&str, 200, "Interactive", "image/jpeg");
strcatf(&str, "Content-Length: %jd\r\n"
"contentFeatures.dlna.org: DLNA.ORG_PN=JPEG_TN\r\n\r\n",
(intmax_t)size);
if( send_data(h, str.data, str.off, MSG_MORE) == 0 )
{
if( h->req_command != EHead )
send_file(h, fd, 0, size-1);
}
close(fd);
CloseSocket_upnphttp(h);
}
static void
SendResp_caption(struct upnphttp * h, char * object)
{
char header[512];
char *path;
off_t size;
long long id;
int fd;
struct string_s str;
id = strtoll(object, NULL, 10);
path = sql_get_text_field(db, "SELECT PATH from CAPTIONS where ID = %lld", id);
if( !path )
{
DPRINTF(E_WARN, L_HTTP, "CAPTION ID %s not found, responding ERROR 404\n", object);
Send404(h);
return;
}
DPRINTF(E_INFO, L_HTTP, "Serving caption ID: %lld [%s]\n", id, path);
fd = _open_file(path);
if( fd < 0 ) {
sqlite3_free(path);
if (fd == -403)
Send403(h);
else
Send404(h);
return;
}
sqlite3_free(path);
size = lseek(fd, 0, SEEK_END);
lseek(fd, 0, SEEK_SET);
INIT_STR(str, header);
start_dlna_header(&str, 200, "Interactive", "smi/caption");
strcatf(&str, "Content-Length: %jd\r\n\r\n", (intmax_t)size);
if( send_data(h, str.data, str.off, MSG_MORE) == 0 )
{
if( h->req_command != EHead )
send_file(h, fd, 0, size-1);
}
close(fd);
CloseSocket_upnphttp(h);
}
static void
SendResp_thumbnail(struct upnphttp * h, char * object)
{
char header[512];
char *path;
long long id;
ExifData *ed;
ExifLoader *l;
struct string_s str;
if( h->reqflags & (FLAG_XFERSTREAMING|FLAG_RANGE) )
{
DPRINTF(E_WARN, L_HTTP, "Client tried to specify transferMode as Streaming with an image!\n");
Send406(h);
return;
}
id = strtoll(object, NULL, 10);
path = sql_get_text_field(db, "SELECT PATH from DETAILS where ID = '%lld'", id);
if( !path )
{
DPRINTF(E_WARN, L_HTTP, "DETAIL ID %s not found, responding ERROR 404\n", object);
Send404(h);
return;
}
DPRINTF(E_INFO, L_HTTP, "Serving thumbnail for ObjectId: %lld [%s]\n", id, path);
if( access(path, F_OK) != 0 )
{
DPRINTF(E_ERROR, L_HTTP, "Error accessing %s\n", path);
Send404(h);
sqlite3_free(path);
return;
}
l = exif_loader_new();
exif_loader_write_file(l, path);
ed = exif_loader_get_data(l);
exif_loader_unref(l);
sqlite3_free(path);
if( !ed || !ed->size )
{
Send404(h);
if( ed )
exif_data_unref(ed);
return;
}
INIT_STR(str, header);
start_dlna_header(&str, 200, "Interactive", "image/jpeg");
strcatf(&str, "Content-Length: %jd\r\n"
"contentFeatures.dlna.org: DLNA.ORG_PN=JPEG_TN;DLNA.ORG_CI=1\r\n\r\n",
(intmax_t)ed->size);
if( send_data(h, str.data, str.off, MSG_MORE) == 0 )
{
if( h->req_command != EHead )
send_data(h, (char *)ed->data, ed->size, 0);
}
exif_data_unref(ed);
CloseSocket_upnphttp(h);
}
static void
SendResp_resizedimg(struct upnphttp * h, char * object)
{
char header[512];
char buf[128];
struct string_s str;
char **result;
char dlna_pn[22];
uint32_t dlna_flags = DLNA_FLAG_DLNA_V1_5|DLNA_FLAG_HTTP_STALLING|DLNA_FLAG_TM_B|DLNA_FLAG_TM_I;
int width=640, height=480, dstw, dsth, size;
int srcw, srch;
unsigned char * data = NULL;
char *path, *file_path = NULL;
char *resolution = NULL;
char *key, *val;
char *saveptr, *item = NULL;
int rotate;
int pixw = 0, pixh = 0;
long long id;
int rows=0, chunked, ret;
image_s *imsrc = NULL, *imdst = NULL;
int scale = 1;
const char *tmode;
id = strtoll(object, &saveptr, 10);
snprintf(buf, sizeof(buf), "SELECT PATH, RESOLUTION, ROTATION from DETAILS where ID = '%lld'", (long long)id);
ret = sql_get_table(db, buf, &result, &rows, NULL);
if( ret != SQLITE_OK )
{
Send500(h);
return;
}
if( rows )
{
file_path = result[3];
resolution = result[4];
rotate = result[5] ? atoi(result[5]) : 0;
}
if( !file_path || !resolution || (access(file_path, F_OK) != 0) )
{
DPRINTF(E_WARN, L_HTTP, "%s not found, responding ERROR 404\n", object);
sqlite3_free_table(result);
Send404(h);
return;
}
if( saveptr )
saveptr = strchr(saveptr, '?');
path = saveptr ? saveptr + 1 : object;
for( item = strtok_r(path, "&,", &saveptr); item != NULL; item = strtok_r(NULL, "&,", &saveptr) )
{
decodeString(item, 1);
val = item;
key = strsep(&val, "=");
if( !val )
continue;
DPRINTF(E_DEBUG, L_GENERAL, "%s: %s\n", key, val);
if( strcasecmp(key, "width") == 0 )
{
width = atoi(val);
}
else if( strcasecmp(key, "height") == 0 )
{
height = atoi(val);
}
else if( strcasecmp(key, "rotation") == 0 )
{
rotate = (rotate + atoi(val)) % 360;
sql_exec(db, "UPDATE DETAILS set ROTATION = %d where ID = %lld", rotate, id);
}
else if( strcasecmp(key, "pixelshape") == 0 )
{
ret = sscanf(val, "%d:%d", &pixw, &pixh);
if( ret != 2 )
pixw = pixh = 0;
}
}
#if USE_FORK
pid_t newpid = 0;
newpid = process_fork(h->req_client);
if( newpid > 0 )
{
CloseSocket_upnphttp(h);
goto resized_error;
}
#endif
if( h->reqflags & (FLAG_XFERSTREAMING|FLAG_RANGE) )
{
DPRINTF(E_WARN, L_HTTP, "Client tried to specify transferMode as Streaming with an image!\n");
Send406(h);
goto resized_error;
}
DPRINTF(E_INFO, L_HTTP, "Serving resized image for ObjectId: %lld [%s]\n", id, file_path);
if( rotate )
DPRINTF(E_DEBUG, L_HTTP, "Rotating image %d degrees\n", rotate);
switch( rotate )
{
case 90:
ret = sscanf(resolution, "%dx%d", &srch, &srcw);
rotate = ROTATE_90;
break;
case 270:
ret = sscanf(resolution, "%dx%d", &srch, &srcw);
rotate = ROTATE_270;
break;
case 180:
ret = sscanf(resolution, "%dx%d", &srcw, &srch);
rotate = ROTATE_180;
break;
default:
ret = sscanf(resolution, "%dx%d", &srcw, &srch);
rotate = ROTATE_NONE;
break;
}
if( ret != 2 )
{
Send500(h);
return;
}
/* Figure out the best destination resolution we can use */
dstw = width;
dsth = ((((width<<10)/srcw)*srch)>>10);
if( dsth > height )
{
dsth = height;
dstw = (((height<<10)/srch) * srcw>>10);
}
/* Account for pixel shape */
if( pixw && pixh )
{
if( pixh > pixw )
dsth = dsth * pixw / pixh;
else if( pixw > pixh )
dstw = dstw * pixh / pixw;
}
if( dstw <= 160 && dsth <= 160 )
strcpy(dlna_pn, "DLNA.ORG_PN=JPEG_TN;");
else if( dstw <= 640 && dsth <= 480 )
strcpy(dlna_pn, "DLNA.ORG_PN=JPEG_SM;");
else if( dstw <= 1024 && dsth <= 768 )
strcpy(dlna_pn, "DLNA.ORG_PN=JPEG_MED;");
else
strcpy(dlna_pn, "DLNA.ORG_PN=JPEG_LRG;");
if( srcw>>4 >= dstw && srch>>4 >= dsth)
scale = 8;
else if( srcw>>3 >= dstw && srch>>3 >= dsth )
scale = 4;
else if( srcw>>2 >= dstw && srch>>2 >= dsth )
scale = 2;
INIT_STR(str, header);
#if USE_FORK
if( (h->reqflags & FLAG_XFERBACKGROUND) && (setpriority(PRIO_PROCESS, 0, 19) == 0) )
tmode = "Background";
else
#endif
tmode = "Interactive";
start_dlna_header(&str, 200, tmode, "image/jpeg");
strcatf(&str, "contentFeatures.dlna.org: %sDLNA.ORG_CI=1;DLNA.ORG_FLAGS=%08X%024X\r\n",
dlna_pn, dlna_flags, 0);
if( strcmp(h->HttpVer, "HTTP/1.0") == 0 )
{
chunked = 0;
imsrc = image_new_from_jpeg(file_path, 1, NULL, 0, scale, rotate);
}
else
{
chunked = 1;
strcatf(&str, "Transfer-Encoding: chunked\r\n\r\n");
}
if( !chunked )
{
if( !imsrc )
{
DPRINTF(E_WARN, L_HTTP, "Unable to open image %s!\n", file_path);
Send500(h);
goto resized_error;
}
imdst = image_resize(imsrc, dstw, dsth);
data = image_save_to_jpeg_buf(imdst, &size);
strcatf(&str, "Content-Length: %d\r\n\r\n", size);
}
if( (send_data(h, str.data, str.off, 0) == 0) && (h->req_command != EHead) )
{
if( chunked )
{
imsrc = image_new_from_jpeg(file_path, 1, NULL, 0, scale, rotate);
if( !imsrc )
{
DPRINTF(E_WARN, L_HTTP, "Unable to open image %s!\n", file_path);
Send500(h);
goto resized_error;
}
imdst = image_resize(imsrc, dstw, dsth);
data = image_save_to_jpeg_buf(imdst, &size);
ret = sprintf(buf, "%x\r\n", size);
send_data(h, buf, ret, MSG_MORE);
send_data(h, (char *)data, size, MSG_MORE);
send_data(h, "\r\n0\r\n\r\n", 7, 0);
}
else
{
send_data(h, (char *)data, size, 0);
}
}
DPRINTF(E_INFO, L_HTTP, "Done serving %s\n", file_path);
if( imsrc )
image_free(imsrc);
if( imdst )
image_free(imdst);
CloseSocket_upnphttp(h);
resized_error:
sqlite3_free_table(result);
#if USE_FORK
if( newpid == 0 )
_exit(0);
#endif
}
static void
SendResp_dlnafile(struct upnphttp *h, char *object)
{
char header[1024];
struct string_s str;
char buf[128];
char **result;
int rows, ret;
off_t total, offset, size;
int64_t id;
int sendfh;
uint32_t dlna_flags = DLNA_FLAG_DLNA_V1_5|DLNA_FLAG_HTTP_STALLING|DLNA_FLAG_TM_B;
uint32_t cflags = h->req_client ? h->req_client->type->flags : 0;
const char *tmode;
enum client_types ctype = h->req_client ? h->req_client->type->type : 0;
static struct { int64_t id;
enum client_types client;
char path[PATH_MAX];
char mime[32];
char dlna[96];
} last_file = { 0, 0 };
#if USE_FORK
pid_t newpid = 0;
#endif
id = strtoll(object, NULL, 10);
if( cflags & FLAG_MS_PFS )
{
if( strstr(object, "?albumArt=true") )
{
char *art;
art = sql_get_text_field(db, "SELECT ALBUM_ART from DETAILS where ID = '%lld'", id);
if (art)
{
SendResp_albumArt(h, art);
sqlite3_free(art);
}
else
Send404(h);
return;
}
}
if( id != last_file.id || ctype != last_file.client )
{
snprintf(buf, sizeof(buf), "SELECT PATH, MIME, DLNA_PN from DETAILS where ID = '%lld'", (long long)id);
ret = sql_get_table(db, buf, &result, &rows, NULL);
if( (ret != SQLITE_OK) )
{
DPRINTF(E_ERROR, L_HTTP, "Didn't find valid file for %lld!\n", (long long)id);
Send500(h);
return;
}
if( !rows || !result[3] || !result[4] )
{
DPRINTF(E_WARN, L_HTTP, "%s not found, responding ERROR 404\n", object);
sqlite3_free_table(result);
Send404(h);
return;
}
/* Cache the result */
last_file.id = id;
last_file.client = ctype;
strncpy(last_file.path, result[3], sizeof(last_file.path)-1);
if( result[4] )
{
strncpy(last_file.mime, result[4], sizeof(last_file.mime)-1);
/* From what I read, Samsung TV's expect a [wrong] MIME type of x-mkv. */
if( cflags & FLAG_SAMSUNG )
{
if( strcmp(last_file.mime+6, "x-matroska") == 0 )
strcpy(last_file.mime+8, "mkv");
/* Samsung TV's such as the A750 can natively support many
Xvid/DivX AVI's however, the DLNA server needs the
mime type to say video/mpeg */
else if( ctype == ESamsungSeriesA && strcmp(last_file.mime+6, "x-msvideo") == 0 )
strcpy(last_file.mime+6, "mpeg");
}
/* ... and Sony BDP-S370 won't play MKV unless we pretend it's a DiVX file */
else if( ctype == ESonyBDP )
{
if( strcmp(last_file.mime+6, "x-matroska") == 0 ||
strcmp(last_file.mime+6, "mpeg") == 0 )
strcpy(last_file.mime+6, "divx");
}
}
if( result[5] )
snprintf(last_file.dlna, sizeof(last_file.dlna), "DLNA.ORG_PN=%s;", result[5]);
else
last_file.dlna[0] = '\0';
sqlite3_free_table(result);
}
#if USE_FORK
newpid = process_fork(h->req_client);
if( newpid > 0 )
{
CloseSocket_upnphttp(h);
return;
}
#endif
DPRINTF(E_INFO, L_HTTP, "Serving DetailID: %lld [%s]\n", (long long)id, last_file.path);
if( h->reqflags & FLAG_XFERSTREAMING )
{
if( strncmp(last_file.mime, "image", 5) == 0 )
{
DPRINTF(E_WARN, L_HTTP, "Client tried to specify transferMode as Streaming with an image!\n");
Send406(h);
goto error;
}
}
else if( h->reqflags & FLAG_XFERINTERACTIVE )
{
if( h->reqflags & FLAG_REALTIMEINFO )
{
DPRINTF(E_WARN, L_HTTP, "Bad realTimeInfo flag with Interactive request!\n");
Send400(h);
goto error;
}
if( strncmp(last_file.mime, "image", 5) != 0 )
{
DPRINTF(E_WARN, L_HTTP, "Client tried to specify transferMode as Interactive without an image!\n");
/* Samsung TVs (well, at least the A950) do this for some reason,
* and I don't see them fixing this bug any time soon. */
if( !(cflags & FLAG_SAMSUNG) || GETFLAG(DLNA_STRICT_MASK) )
{
Send406(h);
goto error;
}
}
}
offset = h->req_RangeStart;
sendfh = _open_file(last_file.path);
if( sendfh < 0 ) {
if (sendfh == -403)
Send403(h);
else
Send404(h);
goto error;
}
size = lseek(sendfh, 0, SEEK_END);
lseek(sendfh, 0, SEEK_SET);
INIT_STR(str, header);
#if USE_FORK
if( (h->reqflags & FLAG_XFERBACKGROUND) && (setpriority(PRIO_PROCESS, 0, 19) == 0) )
tmode = "Background";
else
#endif
if( strncmp(last_file.mime, "image", 5) == 0 )
tmode = "Interactive";
else
tmode = "Streaming";
start_dlna_header(&str, (h->reqflags & FLAG_RANGE ? 206 : 200), tmode, last_file.mime);
if( h->reqflags & FLAG_RANGE )
{
if( !h->req_RangeEnd || h->req_RangeEnd == size )
{
h->req_RangeEnd = size - 1;
}
if( (h->req_RangeStart > h->req_RangeEnd) || (h->req_RangeStart < 0) )
{
DPRINTF(E_WARN, L_HTTP, "Specified range was invalid!\n");
Send400(h);
close(sendfh);
goto error;
}
if( h->req_RangeEnd >= size )
{
DPRINTF(E_WARN, L_HTTP, "Specified range was outside file boundaries!\n");
Send416(h);
close(sendfh);
goto error;
}
total = h->req_RangeEnd - h->req_RangeStart + 1;
strcatf(&str, "Content-Length: %jd\r\n"
"Content-Range: bytes %jd-%jd/%jd\r\n",
(intmax_t)total, (intmax_t)h->req_RangeStart,
(intmax_t)h->req_RangeEnd, (intmax_t)size);
}
else
{
h->req_RangeEnd = size - 1;
total = size;
strcatf(&str, "Content-Length: %jd\r\n", (intmax_t)total);
}
switch( *last_file.mime )
{
case 'i':
dlna_flags |= DLNA_FLAG_TM_I;
break;
case 'a':
case 'v':
default:
dlna_flags |= DLNA_FLAG_TM_S;
break;
}
if( h->reqflags & FLAG_CAPTION )
{
if( sql_get_int_field(db, "SELECT ID from CAPTIONS where ID = '%lld'", (long long)id) > 0 )
strcatf(&str, "CaptionInfo.sec: http://%s:%d/Captions/%lld.srt\r\n",
lan_addr[h->iface].str, runtime_vars.port, (long long)id);
}
strcatf(&str, "Accept-Ranges: bytes\r\n"
"contentFeatures.dlna.org: %sDLNA.ORG_OP=%02X;DLNA.ORG_CI=%X;DLNA.ORG_FLAGS=%08X%024X\r\n\r\n",
last_file.dlna, 1, 0, dlna_flags, 0);
//DEBUG DPRINTF(E_DEBUG, L_HTTP, "RESPONSE: %s\n", str.data);
if( send_data(h, str.data, str.off, MSG_MORE) == 0 )
{
if( h->req_command != EHead )
send_file(h, sendfh, offset, h->req_RangeEnd);
}
close(sendfh);
CloseSocket_upnphttp(h);
error:
#if USE_FORK
if( newpid == 0 )
_exit(0);
#endif
return;
}