server/socket/image.C

/*
 * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game.
 * 
 * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
 * Copyright (©) 2001,2007 Mark Wedel
 * Copyright (©) 1992,2007 Frank Tore Johansen
 * 
 * Crossfire TRT is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 * for more details.
 * 
 * You should have received a copy of the GNU General Public License along
 * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 * 
 * The authors can be reached via e-mail to <crossfire@schmorp.de>
 */

/** \file
 * Image related communication
 *
 *  \date 2003-12-02
 *
 * This file deals with the image related communication to the
 * client.  I've located all the functions in this file - this
 * localizes it more, and means that we don't need to declare
 * things like all the structures as globals.
 */

#include <global.h>
#include <sproto.h>

#include "crc.h"

#define MAX_FACE_SETS   20  /**< Maximum number of image sets the program will handle */

/** Information about one image */
typedef struct FaceInfo
{
  uint8 *data;              /**< image data */
  uint16 datalen;           /**< length of the xpm data */
  uint32 checksum;          /**< Checksum of face data */
} FaceInfo;

/** Information about one face set */
typedef struct
{
  char *prefix;         /**< */
  char *fullname;

  uint8 fallback;       /**< faceset to use when an image is not found in this faceset */
  char *size;
  char *extension;
  char *comment;

  FaceInfo *faces;      /**< images in this faceset */
} FaceSets;

static FaceSets facesets[MAX_FACE_SETS];    /**< All facesets */

/**
 * Checks specified faceset is valid
 * \param fsn faceset number
 */
int
is_valid_faceset (int fsn)
{
  if (fsn >= 0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix)
    return TRUE;
  return FALSE;
}

/**
 * Frees all faceset information
 */
void
free_socket_images (void)
{
  int num, q;

  for (num = 0; num < MAX_FACE_SETS; num++)
    {
      if (facesets[num].prefix)
        {
          for (q = 0; q < faces.size (); q++)
            if (facesets[num].faces[q].data)
              free (facesets[num].faces[q].data);

          free (facesets[num].prefix);
          free (facesets[num].fullname);
          free (facesets[num].size);
          free (facesets[num].extension);
          free (facesets[num].comment);
          free (facesets[num].faces);
        }
    }
}

/**
 * This returns the set we will actually use when sending
 * a face.  This is used because the image files may be sparse.
 * This function is recursive.  imageno is the face number we are
 * trying to send
 *
 * If face is not found in specified faceset, tries with 'fallback' faceset.
 *
 * \param faceset faceset to check
 * \param imageno image number
 *
 */
static int
get_face_fallback (int faceset, int imageno)
{
  /* faceset 0 is supposed to have every image, so just return.  Doing
   * so also prevents infinite loops in the case if it not having
   * the face, but in that case, we are likely to crash when we try
   * to access the data, but that is probably preferable to an infinite
   * loop.
   */
  if (faceset == 0)
    return 0;

  if (!facesets[faceset].prefix)
    {
      LOG (llevError, "get_face_fallback called with unused set (%d)?\n", faceset);
      return 0;                 /* use default set */
    }

  if (facesets[faceset].faces[imageno].data)
    return faceset;

  return get_face_fallback (facesets[faceset].fallback, imageno);
}

/**
 * Checks fallback are correctly defined.
 * This is a simple recursive function that makes sure the fallbacks
 * are all proper (eg, the fall back to defined sets, and also
 * eventually fall back to 0).  At the top level, togo is set to MAX_FACE_SETS,
 * if togo gets to zero, it means we have a loop.
 * This is only run when we first load the facesets.
 */
static void
check_faceset_fallback (int faceset, int togo)
{
  int fallback = facesets[faceset].fallback;

  /* proper case - falls back to base set */
  if (fallback == 0)
    return;

  if (!facesets[fallback].prefix)
    {
      LOG (llevError, "Face set %d falls to non set faceset %d\n", faceset, fallback);
      abort ();
    }

  togo--;
  if (togo == 0)
    {
      LOG (llevError, "Infinite loop found in facesets. aborting.\n");
      abort ();
    }

  check_faceset_fallback (fallback, togo);
}

#define MAX_IMAGE_SIZE 10000

/**
 * Client tells us what type of faces it wants.  Also sets
 * the caching attribute.
 *
 */
void
SetFaceMode (char *buf, int len, client *ns)
{
  int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE);

  if (mode == CF_FACE_NONE)
    ns->facecache = 1;
  else if (mode != CF_FACE_PNG)
    ns->send_packet_printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode.  Will use Png");

  if (mask)
    ns->facecache = 1;
}

/**
 * client requested an image. send it rate-limited
 * before flushing.
 */
void
AskFaceCmd (char *buf, int len, client *ns)
{
  int idx = 0, pri = 0;

  sscanf (buf, "%d %d", &idx, &pri);

  const facedata *d = face_data (idx, ns->faceset);

  if (!d)
    return; // doh

  client::ixsend ix;

  ix.pri = pri;
  ix.idx = idx;
  ix.ofs = d->data.size ();

  // the by far most common case will be to insert
  // right at the end, so no looping.
  auto (i, ns->ixface.end ());
  for (; i != ns->ixface.begin (); )
    if (pri >= (--i)->pri)
      break;

  ns->ixface.insert (i, ix);
}

/**
 * Tells client the picture it has to use 
 * to smooth a picture number given as argument.
 */
void
AskSmooth (char *buf, int len, client *ns)
{
  ns->send_face (atoi (buf));
  ns->flush_fx ();
}

// how lame
static void print_facename (packet &sl, const facedata &d)
{
  for (int i = 0; i < CHKSUM_SIZE; ++i)
    sl.printf ("%02x", d.chksum [i]);
}

// gcfclient uses the server-provided checksum for comparison, but always
// writes a broken checksum to its cache file, so we have to provide
// gcfclient with the same broken (and useless) checksum just to have it
// cache the image despite its bugs.
static uint32 gcfclient_checksum (const facedata *d)
{
  uint32 csum = 0;

  for (std::string::const_iterator i = d->data.begin ();
       i != d->data.end ();
       ++i)
    {
      csum = rotate_right (csum);
      csum += *(uint8 *)&*i;
    }

  return csum;
}

/**
 * Sends a face to a client if they are in pixmap mode
 * nothing gets sent in bitmap mode. 
 * If nocache is true (nonzero), ignore the cache setting from the client -
 * this is needed for the askface, in which we really do want to send the
 * face (and askface is the only place that should be setting it).  Otherwise,
 * we look at the facecache, and if set, send the image name.
 */
void
client::send_face (faceidx facenum)
{
  // never send face 0. ever. it does not exist.
  if (!facenum)
    return;

  const facedata *d = face_data (facenum, faceset);

  if (!d)
    {
      LOG (llevError, "client::send_face (%d) out of bounds??\n", facenum);
      return;
    }

  if (faces_sent[facenum])
    return;

  faces_sent[facenum] = true;

  // if for some reason we let a client without face caching connect,
  // we better support that decision here and implement it.
  if (!facecache)
    return send_image (facenum);

  if (fxix)
    {
      fxface.push_back (facenum);
      return;
    }

  packet sl;

  if (force_face0)
    sl << "face "  << uint16 (facenum);
  else if (image2)
    sl << "face2 " << uint16 (facenum) << uint8 (0) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);
  else
    sl << "face1 " << uint16 (facenum) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);

  // how lame
  print_facename (sl, *d);
  send_packet (sl);

  if (EMI_smooth)
    {
      faceinfo *f = face_info (facenum);

      if (f->smooth)
        {
          send_face (f->smooth);

          packet sl ("smooth");

          sl << uint16 (facenum)
             << uint16 (f->smooth);

          send_packet (sl);
        }
    }
}

void client::flush_fx ()
{
  while (!fxface.empty ())
    {
      packet fx ("fx");
      packet sx ("sx");

      do
        {
          faceidx facenum = fxface.back (); fxface.pop_back ();

          const facedata *d = face_data (facenum, faceset);

          if (d)
            {
              fx << ber32 (facenum)
                 << data8 (d->chksum, CHKSUM_SIZE);

              if (smoothing)
                {
                  faceinfo *f = face_info (facenum);

                  if (f->smooth)
                    {
                      send_face (f->smooth);
                      sx << ber32 (facenum)
                         << ber32 (f->smooth)
                         << ber32 (f->smoothlevel);
                    }
                }
            }
        }
      while (!fxface.empty ()
             && fx.room () > ber32::size + CHKSUM_SIZE + 1
             && sx.room () > ber32::size * 3);

      send_packet (fx);
      if (sx.length () > 3) send_packet (sx);
    }
}

void
client::send_image (faceidx facenum)
{
  // never send face 0. ever. it does not exist.
  if (!facenum)
    return;

  const facedata *d = face_data (facenum, faceset);

  faces_sent[facenum] = true;

  if (!d)
    {
      LOG (llevError, "client::send_image (%d) out of bounds??\n", facenum);
      return;
    }
  
  //TODO: check type here?

  if (force_image_newmap)
    force_newmap = true;

  packet sl;

  sl << (image2 ? "image2 " : "image ")
     << uint32 (facenum);

  if (image2)
    sl << uint8 (0);

  sl << uint32 (d->data.size ())
     << data (d->data.data (), d->data.size ());

  send_packet (sl);
}

// send all faces of this object to the client
// this uses more bandwidth initially, but makes
// animations look much smoother, and every client
// is supposed to do client-side caching anyways.
void
client::send_faces (object *ob)
{
  send_face (ob->face);

  if (ob->animation_id)
    {
      animation &anim = animations [ob->animation_id];

      for (int i = 0; i < anim.num_animations; i++)
        send_face (anim.faces [i]);
    }
}

/**
 * Need to send an animation sequence to the client.
 * We will send appropriate face commands to the client if we haven't
 * sent them the face yet (this can become quite costly in terms of
 * how much we are sending - on the other hand, this should only happen
 * when the player logs in and picks stuff up.
 */
void
client::send_animation (short anim_num)
{
  /* Do some checking on the anim_num we got.  Note that the animations
   * are added in contigous order, so if the number is in the valid
   * range, it must be a valid animation.
   */
  if (anim_num < 0 || anim_num >= animations.size ())
    {
      LOG (llevError, "esrv_send_anim (%d) out of bounds??\n", anim_num);
      return;
    }

  packet sl ("anim");

  sl << uint16 (anim_num)
     << uint16 (0); /* flags - not used right now */

  /* Build up the list of faces.  Also, send any information (ie, the
   * the face itself) down to the client.
   */
  for (int i = 0; i < animations[anim_num].num_animations; i++)
    {
      send_face (animations[anim_num].faces[i]);
      sl << uint16 (animations[anim_num].faces[i]);   /* flags - not used right now */
    }

  send_packet (sl);

  anims_sent[anim_num] = 1;
}

/**
 * Sends the number of images, checksum of the face file,
 * and the image_info file information.  See the doc/Developers/protocol
 * if you want further detail.
 */
void
send_image_info (client *ns, char *params)
{
  packet sl;

  //TODO: second parameter is a checksum, but it makes no sense in this current framework
  sl.printf ("replyinfo image_info\n%d\n%u\n", MAX_FACES, 0);

  sl << "0:base:standard:0:32x32:none:The old 32x32 faceset.\n";

  ns->send_packet (sl);
}

/**
 * Sends requested face information.
 * \param ns socket to send to
 * \param params contains first and last index of face
 *
 * For each image in [start..stop] sends
 *  - checksum
 *  - name
 */
void
send_image_sums (client *ns, char *params)
{
  int start, stop;
  char *cp;

  packet sl;

  start = atoi (params);
  for (cp = params; *cp != '\0'; cp++)
    if (*cp == ' ')
      break;

  stop = atoi (cp);
  if (stop < start || *cp == '\0' || (stop - start) > 1000 || stop >= MAX_FACES)
    {
      sl.printf ("replyinfo image_sums %d %d", start, stop);
      ns->send_packet (sl);
      sl.reset ();
      return;
    }

  sl.printf ("replyinfo image_sums %d %d ", start, stop);

  for (int i = start; i <= stop && i < faces.size (); i++)
    {
      ns->faces_sent[i] = true;

      const facedata *d = face_data (i, ns->faceset);

      if (sl.room () < 2 + 4 + 1 + d->data.size () + 1)
        break;

      sl << uint16 (i)
         << uint32 (0) // checksum
         << uint8  (ns->faceset);

      print_facename (sl, *d); sl << uint8 (0);
    }

  /* It would make more sense to catch this pre-emptively in the code above.
   * however, if this really happens, we probably just want to cut down the
   * size to less than 1000, since that is what we claim the protocol would
   * support.
   */
  //TODO: taken care of above, should simply abort or make sure the above code is correct
  if (sl.length () >= MAXSOCKBUF)
    {
      LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
      abort ();
    }

  ns->send_packet (sl);
}

Revision:	1.43
Committed:	Sun Jul 1 04:08:14 2007 UTC (16 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.42:	+41 -7 lines
Log Message:	- support priority as second argument of askface - send images of same priority in fifo order, but higher priorities first.
#	User	Rev	Content
1	elmex	1.1	/*
2	root	1.42	* This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game.
3			*
4			* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
5			* Copyright (©) 2001,2007 Mark Wedel
6			* Copyright (©) 1992,2007 Frank Tore Johansen
7			*
8			* Crossfire TRT is free software; you can redistribute it and/or modify it
9			* under the terms of the GNU General Public License as published by the Free
10			* Software Foundation; either version 2 of the License, or (at your option)
11			* any later version.
12			*
13			* This program is distributed in the hope that it will be useful, but
14			* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15			* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16			* for more details.
17			*
18			* You should have received a copy of the GNU General Public License along
19			* with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51
20			* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21			*
22			* The authors can be reached via e-mail to <crossfire@schmorp.de>
23	root	1.17	*/
24	elmex	1.1
25			/** \file
26			* Image related communication
27			*
28			* \date 2003-12-02
29			*
30			* This file deals with the image related communication to the
31			* client. I've located all the functions in this file - this
32			* localizes it more, and means that we don't need to declare
33			* things like all the structures as globals.
34			*/
35
36			#include <global.h>
37			#include <sproto.h>
38
39	root	1.20	#include "crc.h"
40
41	elmex	1.1	#define MAX_FACE_SETS 20 /*< Maximum number of image sets the program will handle /
42
43			/** Information about one image */
44	root	1.3	typedef struct FaceInfo
45			{
46			uint8 data; /< image data /
47			uint16 datalen; /*< length of the xpm data /
48			uint32 checksum; /*< Checksum of face data /
49	elmex	1.1	} FaceInfo;
50
51			/** Information about one face set */
52	root	1.3	typedef struct
53			{
54			char prefix; /< /
55			char *fullname;
56
57			uint8 fallback; /*< faceset to use when an image is not found in this faceset /
58			char *size;
59			char *extension;
60			char *comment;
61
62			FaceInfo faces; /< images in this faceset /
63	elmex	1.1	} FaceSets;
64
65			static FaceSets facesets[MAX_FACE_SETS]; /*< All facesets /
66
67			/**
68			* Checks specified faceset is valid
69			* \param fsn faceset number
70			*/
71	root	1.3	int
72			is_valid_faceset (int fsn)
73	elmex	1.1	{
74	root	1.3	if (fsn >= 0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix)
75			return TRUE;
76			return FALSE;
77	elmex	1.1	}
78
79			/**
80			* Frees all faceset information
81			*/
82	root	1.3	void
83			free_socket_images (void)
84	elmex	1.1	{
85	root	1.3	int num, q;
86	elmex	1.1
87	root	1.3	for (num = 0; num < MAX_FACE_SETS; num++)
88			{
89			if (facesets[num].prefix)
90			{
91	root	1.24	for (q = 0; q < faces.size (); q++)
92	root	1.3	if (facesets[num].faces[q].data)
93			free (facesets[num].faces[q].data);
94	root	1.15
95	root	1.3	free (facesets[num].prefix);
96			free (facesets[num].fullname);
97			free (facesets[num].size);
98			free (facesets[num].extension);
99			free (facesets[num].comment);
100			free (facesets[num].faces);
101	root	1.2	}
102	elmex	1.1	}
103			}
104
105			/**
106			* This returns the set we will actually use when sending
107			* a face. This is used because the image files may be sparse.
108			* This function is recursive. imageno is the face number we are
109			* trying to send
110			*
111			* If face is not found in specified faceset, tries with 'fallback' faceset.
112			*
113			* \param faceset faceset to check
114			* \param imageno image number
115			*
116			*/
117	root	1.3	static int
118			get_face_fallback (int faceset, int imageno)
119	elmex	1.1	{
120	root	1.3	/* faceset 0 is supposed to have every image, so just return. Doing
121			* so also prevents infinite loops in the case if it not having
122			* the face, but in that case, we are likely to crash when we try
123			* to access the data, but that is probably preferable to an infinite
124			* loop.
125			*/
126			if (faceset == 0)
127			return 0;
128
129			if (!facesets[faceset].prefix)
130			{
131			LOG (llevError, "get_face_fallback called with unused set (%d)?\n", faceset);
132			return 0; /* use default set */
133			}
134	root	1.15
135	root	1.3	if (facesets[faceset].faces[imageno].data)
136			return faceset;
137	root	1.15
138	root	1.3	return get_face_fallback (facesets[faceset].fallback, imageno);
139	elmex	1.1	}
140
141			/**
142			* Checks fallback are correctly defined.
143			* This is a simple recursive function that makes sure the fallbacks
144			* are all proper (eg, the fall back to defined sets, and also
145			* eventually fall back to 0). At the top level, togo is set to MAX_FACE_SETS,
146			* if togo gets to zero, it means we have a loop.
147			* This is only run when we first load the facesets.
148			*/
149	root	1.3	static void
150			check_faceset_fallback (int faceset, int togo)
151	elmex	1.1	{
152	root	1.3	int fallback = facesets[faceset].fallback;
153	elmex	1.1
154	root	1.3	/* proper case - falls back to base set */
155			if (fallback == 0)
156			return;
157
158			if (!facesets[fallback].prefix)
159			{
160			LOG (llevError, "Face set %d falls to non set faceset %d\n", faceset, fallback);
161			abort ();
162			}
163	root	1.15
164	root	1.3	togo--;
165			if (togo == 0)
166			{
167			LOG (llevError, "Infinite loop found in facesets. aborting.\n");
168			abort ();
169	elmex	1.1	}
170	root	1.15
171	root	1.3	check_faceset_fallback (fallback, togo);
172	elmex	1.1	}
173
174			#define MAX_IMAGE_SIZE 10000
175
176			/**
177			* Client tells us what type of faces it wants. Also sets
178			* the caching attribute.
179			*
180			*/
181	root	1.3	void
182	root	1.13	SetFaceMode (char buf, int len, client ns)
183	elmex	1.1	{
184	root	1.3	int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE);
185	elmex	1.1
186	root	1.3	if (mode == CF_FACE_NONE)
187	root	1.7	ns->facecache = 1;
188	root	1.3	else if (mode != CF_FACE_PNG)
189	root	1.14	ns->send_packet_printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode. Will use Png");
190	root	1.7
191	root	1.3	if (mask)
192	root	1.7	ns->facecache = 1;
193	elmex	1.1	}
194
195			/**
196	root	1.43	* client requested an image. send it rate-limited
197			* before flushing.
198	elmex	1.1	*/
199	root	1.3	void
200	root	1.43	AskFaceCmd (char buf, int len, client ns)
201	elmex	1.1	{
202	root	1.43	int idx = 0, pri = 0;
203
204			sscanf (buf, "%d %d", &idx, &pri);
205
206			const facedata *d = face_data (idx, ns->faceset);
207
208			if (!d)
209			return; // doh
210
211			client::ixsend ix;
212
213			ix.pri = pri;
214			ix.idx = idx;
215			ix.ofs = d->data.size ();
216
217			// the by far most common case will be to insert
218			// right at the end, so no looping.
219			auto (i, ns->ixface.end ());
220			for (; i != ns->ixface.begin (); )
221			if (pri >= (--i)->pri)
222			break;
223
224			ns->ixface.insert (i, ix);
225			}
226
227			/**
228			* Tells client the picture it has to use
229			* to smooth a picture number given as argument.
230			*/
231			void
232			AskSmooth (char buf, int len, client ns)
233			{
234			ns->send_face (atoi (buf));
235			ns->flush_fx ();
236	elmex	1.1	}
237
238	root	1.24	// how lame
239			static void print_facename (packet &sl, const facedata &d)
240			{
241	root	1.25	for (int i = 0; i < CHKSUM_SIZE; ++i)
242			sl.printf ("%02x", d.chksum [i]);
243	root	1.24	}
244
245	root	1.32	// gcfclient uses the server-provided checksum for comparison, but always
246			// writes a broken checksum to its cache file, so we have to provide
247			// gcfclient with the same broken (and useless) checksum just to have it
248			// cache the image despite its bugs.
249	root	1.26	static uint32 gcfclient_checksum (const facedata *d)
250			{
251			uint32 csum = 0;
252
253			for (std::string::const_iterator i = d->data.begin ();
254			i != d->data.end ();
255			++i)
256			{
257			csum = rotate_right (csum);
258			csum += (uint8 )&*i;
259			}
260
261			return csum;
262			}
263
264	elmex	1.1	/**
265			* Sends a face to a client if they are in pixmap mode
266			* nothing gets sent in bitmap mode.
267			* If nocache is true (nonzero), ignore the cache setting from the client -
268			* this is needed for the askface, in which we really do want to send the
269			* face (and askface is the only place that should be setting it). Otherwise,
270			* we look at the facecache, and if set, send the image name.
271			*/
272	root	1.3	void
273	root	1.32	client::send_face (faceidx facenum)
274	elmex	1.1	{
275	root	1.28	// never send face 0. ever. it does not exist.
276			if (!facenum)
277			return;
278
279			const facedata *d = face_data (facenum, faceset);
280
281			if (!d)
282	root	1.3	{
283	root	1.28	LOG (llevError, "client::send_face (%d) out of bounds??\n", facenum);
284	root	1.3	return;
285			}
286
287	root	1.32	if (faces_sent[facenum])
288			return;
289
290			faces_sent[facenum] = true;
291
292	root	1.38	// if for some reason we let a client without face caching connect,
293			// we better support that decision here and implement it.
294	root	1.33	if (!facecache)
295	root	1.38	return send_image (facenum);
296	root	1.33
297	root	1.39	if (fxix)
298			{
299			fxface.push_back (facenum);
300			return;
301			}
302
303	root	1.8	packet sl;
304	root	1.3
305	root	1.32	if (force_face0)
306			sl << "face " << uint16 (facenum);
307			else if (image2)
308			sl << "face2 " << uint16 (facenum) << uint8 (0) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);
309			else
310			sl << "face1 " << uint16 (facenum) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);
311
312			// how lame
313			print_facename (sl, *d);
314			send_packet (sl);
315
316	root	1.40	if (EMI_smooth)
317	root	1.3	{
318	root	1.40	faceinfo *f = face_info (facenum);
319	root	1.28
320	root	1.40	if (f->smooth)
321			{
322			send_face (f->smooth);
323
324			packet sl ("smooth");
325	root	1.30
326	root	1.40	sl << uint16 (facenum)
327			<< uint16 (f->smooth);
328	root	1.31
329	root	1.40	send_packet (sl);
330			}
331	root	1.32	}
332			}
333
334	root	1.39	void client::flush_fx ()
335			{
336			while (!fxface.empty ())
337			{
338	root	1.40	packet fx ("fx");
339			packet sx ("sx");
340	root	1.39
341			do
342			{
343			faceidx facenum = fxface.back (); fxface.pop_back ();
344
345			const facedata *d = face_data (facenum, faceset);
346
347			if (d)
348			{
349	root	1.40	fx << ber32 (facenum)
350	root	1.39	<< data8 (d->chksum, CHKSUM_SIZE);
351
352	root	1.40	if (smoothing)
353			{
354			faceinfo *f = face_info (facenum);
355
356			if (f->smooth)
357			{
358			send_face (f->smooth);
359			sx << ber32 (facenum)
360			<< ber32 (f->smooth)
361			<< ber32 (f->smoothlevel);
362			}
363			}
364	root	1.39	}
365			}
366	root	1.40	while (!fxface.empty ()
367			&& fx.room () > ber32::size + CHKSUM_SIZE + 1
368			&& sx.room () > ber32::size * 3);
369	root	1.39
370	root	1.40	send_packet (fx);
371			if (sx.length () > 3) send_packet (sx);
372	root	1.39	}
373			}
374
375	root	1.32	void
376			client::send_image (faceidx facenum)
377			{
378			// never send face 0. ever. it does not exist.
379			if (!facenum)
380			return;
381	root	1.31
382	root	1.32	const facedata *d = face_data (facenum, faceset);
383	root	1.30
384	root	1.43	faces_sent[facenum] = true;
385
386	root	1.32	if (!d)
387			{
388			LOG (llevError, "client::send_image (%d) out of bounds??\n", facenum);
389			return;
390			}
391	root	1.43
392			//TODO: check type here?
393	root	1.34
394	root	1.36	if (force_image_newmap)
395			force_newmap = true;
396
397	root	1.32	packet sl;
398	root	1.30
399	root	1.32	sl << (image2 ? "image2 " : "image ")
400			<< uint32 (facenum);
401	root	1.6
402	root	1.32	if (image2)
403			sl << uint8 (0);
404	root	1.6
405	root	1.32	sl << uint32 (d->data.size ())
406			<< data (d->data.data (), d->data.size ());
407	root	1.31
408	root	1.32	send_packet (sl);
409	root	1.28	}
410
411			// send all faces of this object to the client
412			// this uses more bandwidth initially, but makes
413			// animations look much smoother, and every client
414			// is supposed to do client-side caching anyways.
415			void
416			client::send_faces (object *ob)
417			{
418			send_face (ob->face);
419
420			if (ob->animation_id)
421			{
422			animation &anim = animations [ob->animation_id];
423
424			for (int i = 0; i < anim.num_animations; i++)
425			send_face (anim.faces [i]);
426			}
427			}
428
429			/**
430			* Need to send an animation sequence to the client.
431			* We will send appropriate face commands to the client if we haven't
432			* sent them the face yet (this can become quite costly in terms of
433			* how much we are sending - on the other hand, this should only happen
434			* when the player logs in and picks stuff up.
435			*/
436			void
437			client::send_animation (short anim_num)
438			{
439			/* Do some checking on the anim_num we got. Note that the animations
440			* are added in contigous order, so if the number is in the valid
441			* range, it must be a valid animation.
442			*/
443	root	1.41	if (anim_num < 0 \|\| anim_num >= animations.size ())
444	root	1.28	{
445			LOG (llevError, "esrv_send_anim (%d) out of bounds??\n", anim_num);
446			return;
447			}
448
449			packet sl ("anim");
450
451			sl << uint16 (anim_num)
452			<< uint16 (0); /* flags - not used right now */
453
454			/* Build up the list of faces. Also, send any information (ie, the
455			* the face itself) down to the client.
456			*/
457			for (int i = 0; i < animations[anim_num].num_animations; i++)
458			{
459			send_face (animations[anim_num].faces[i]);
460			sl << uint16 (animations[anim_num].faces[i]); /* flags - not used right now */
461	elmex	1.1	}
462	root	1.6
463	root	1.28	send_packet (sl);
464
465			anims_sent[anim_num] = 1;
466	elmex	1.1	}
467
468			/**
469			* Sends the number of images, checksum of the face file,
470			* and the image_info file information. See the doc/Developers/protocol
471			* if you want further detail.
472			*/
473	root	1.3	void
474	root	1.15	send_image_info (client ns, char params)
475	elmex	1.1	{
476	root	1.8	packet sl;
477	elmex	1.1
478	root	1.24	//TODO: second parameter is a checksum, but it makes no sense in this current framework
479			sl.printf ("replyinfo image_info\n%d\n%u\n", MAX_FACES, 0);
480	root	1.6
481	root	1.24	sl << "0:base:standard:0:32x32:none:The old 32x32 faceset.\n";
482	elmex	1.1
483	root	1.11	ns->send_packet (sl);
484	elmex	1.1	}
485
486			/**
487			* Sends requested face information.
488			* \param ns socket to send to
489			* \param params contains first and last index of face
490			*
491			* For each image in [start..stop] sends
492			* - checksum
493			* - name
494			*/
495	root	1.3	void
496	root	1.15	send_image_sums (client ns, char params)
497	elmex	1.1	{
498	root	1.3	int start, stop;
499	pippijn	1.22	char *cp;
500	root	1.3
501	root	1.8	packet sl;
502	root	1.3
503			start = atoi (params);
504			for (cp = params; *cp != '\0'; cp++)
505			if (*cp == ' ')
506			break;
507
508			stop = atoi (cp);
509	root	1.24	if (stop < start \|\| *cp == '\0' \|\| (stop - start) > 1000 \|\| stop >= MAX_FACES)
510	root	1.3	{
511	root	1.7	sl.printf ("replyinfo image_sums %d %d", start, stop);
512			ns->send_packet (sl);
513			sl.reset ();
514	root	1.3	return;
515			}
516
517	root	1.6	sl.printf ("replyinfo image_sums %d %d ", start, stop);
518	root	1.3
519	root	1.24	for (int i = start; i <= stop && i < faces.size (); i++)
520	root	1.3	{
521	root	1.30	ns->faces_sent[i] = true;
522	root	1.3
523	root	1.24	const facedata *d = face_data (i, ns->faceset);
524	root	1.6
525	root	1.24	if (sl.room () < 2 + 4 + 1 + d->data.size () + 1)
526	root	1.23	break;
527
528	root	1.6	sl << uint16 (i)
529	root	1.24	<< uint32 (0) // checksum
530			<< uint8 (ns->faceset);
531
532			print_facename (sl, *d); sl << uint8 (0);
533	root	1.3	}
534	root	1.6
535	root	1.3	/* It would make more sense to catch this pre-emptively in the code above.
536			* however, if this really happens, we probably just want to cut down the
537			* size to less than 1000, since that is what we claim the protocol would
538			* support.
539			*/
540	root	1.23	//TODO: taken care of above, should simply abort or make sure the above code is correct
541	root	1.9	if (sl.length () >= MAXSOCKBUF)
542	root	1.3	{
543	root	1.9	LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
544	root	1.3	abort ();
545	elmex	1.1	}
546	root	1.6
547	root	1.11	ns->send_packet (sl);
548	elmex	1.1	}
549	root	1.6