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 has requested pixmap that it somehow missed getting.
 * This will be called often if the client is
 * caching images.
 */
void
SendFaceCmd (char *buf, int len, client *ns)
{
  ns->send_image (atoi (buf));
}

// 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);

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

  faces_sent[facenum] = true;

  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:	1.42
Committed:	Mon May 28 21:22:26 2007 UTC (17 years ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.41:	+21 -21 lines
Log Message:	update copyrights in socket/*.C
#	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			* Client has requested pixmap that it somehow missed getting.
197			* This will be called often if the client is
198			* caching images.
199			*/
200	root	1.3	void
201	root	1.15	SendFaceCmd (char buf, int len, client ns)
202	elmex	1.1	{
203	root	1.32	ns->send_image (atoi (buf));
204	elmex	1.1	}
205
206	root	1.24	// how lame
207			static void print_facename (packet &sl, const facedata &d)
208			{
209	root	1.25	for (int i = 0; i < CHKSUM_SIZE; ++i)
210			sl.printf ("%02x", d.chksum [i]);
211	root	1.24	}
212
213	root	1.32	// gcfclient uses the server-provided checksum for comparison, but always
214			// writes a broken checksum to its cache file, so we have to provide
215			// gcfclient with the same broken (and useless) checksum just to have it
216			// cache the image despite its bugs.
217	root	1.26	static uint32 gcfclient_checksum (const facedata *d)
218			{
219			uint32 csum = 0;
220
221			for (std::string::const_iterator i = d->data.begin ();
222			i != d->data.end ();
223			++i)
224			{
225			csum = rotate_right (csum);
226			csum += (uint8 )&*i;
227			}
228
229			return csum;
230			}
231
232	elmex	1.1	/**
233			* Sends a face to a client if they are in pixmap mode
234			* nothing gets sent in bitmap mode.
235			* If nocache is true (nonzero), ignore the cache setting from the client -
236			* this is needed for the askface, in which we really do want to send the
237			* face (and askface is the only place that should be setting it). Otherwise,
238			* we look at the facecache, and if set, send the image name.
239			*/
240	root	1.3	void
241	root	1.32	client::send_face (faceidx facenum)
242	elmex	1.1	{
243	root	1.28	// never send face 0. ever. it does not exist.
244			if (!facenum)
245			return;
246
247			const facedata *d = face_data (facenum, faceset);
248
249			if (!d)
250	root	1.3	{
251	root	1.28	LOG (llevError, "client::send_face (%d) out of bounds??\n", facenum);
252	root	1.3	return;
253			}
254
255	root	1.32	if (faces_sent[facenum])
256			return;
257
258			faces_sent[facenum] = true;
259
260	root	1.38	// if for some reason we let a client without face caching connect,
261			// we better support that decision here and implement it.
262	root	1.33	if (!facecache)
263	root	1.38	return send_image (facenum);
264	root	1.33
265	root	1.39	if (fxix)
266			{
267			fxface.push_back (facenum);
268			return;
269			}
270
271	root	1.8	packet sl;
272	root	1.3
273	root	1.32	if (force_face0)
274			sl << "face " << uint16 (facenum);
275			else if (image2)
276			sl << "face2 " << uint16 (facenum) << uint8 (0) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);
277			else
278			sl << "face1 " << uint16 (facenum) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);
279
280			// how lame
281			print_facename (sl, *d);
282			send_packet (sl);
283
284	root	1.40	if (EMI_smooth)
285	root	1.3	{
286	root	1.40	faceinfo *f = face_info (facenum);
287	root	1.28
288	root	1.40	if (f->smooth)
289			{
290			send_face (f->smooth);
291
292			packet sl ("smooth");
293	root	1.30
294	root	1.40	sl << uint16 (facenum)
295			<< uint16 (f->smooth);
296	root	1.31
297	root	1.40	send_packet (sl);
298			}
299	root	1.32	}
300			}
301
302	root	1.39	void client::flush_fx ()
303			{
304			while (!fxface.empty ())
305			{
306	root	1.40	packet fx ("fx");
307			packet sx ("sx");
308	root	1.39
309			do
310			{
311			faceidx facenum = fxface.back (); fxface.pop_back ();
312
313			const facedata *d = face_data (facenum, faceset);
314
315			if (d)
316			{
317	root	1.40	fx << ber32 (facenum)
318	root	1.39	<< data8 (d->chksum, CHKSUM_SIZE);
319
320	root	1.40	if (smoothing)
321			{
322			faceinfo *f = face_info (facenum);
323
324			if (f->smooth)
325			{
326			send_face (f->smooth);
327			sx << ber32 (facenum)
328			<< ber32 (f->smooth)
329			<< ber32 (f->smoothlevel);
330			}
331			}
332	root	1.39	}
333			}
334	root	1.40	while (!fxface.empty ()
335			&& fx.room () > ber32::size + CHKSUM_SIZE + 1
336			&& sx.room () > ber32::size * 3);
337	root	1.39
338	root	1.40	send_packet (fx);
339			if (sx.length () > 3) send_packet (sx);
340	root	1.39	}
341			}
342
343	root	1.32	void
344			client::send_image (faceidx facenum)
345			{
346			// never send face 0. ever. it does not exist.
347			if (!facenum)
348			return;
349	root	1.31
350	root	1.32	const facedata *d = face_data (facenum, faceset);
351	root	1.30
352	root	1.32	if (!d)
353			{
354			LOG (llevError, "client::send_image (%d) out of bounds??\n", facenum);
355			return;
356			}
357	root	1.30
358	root	1.34	faces_sent[facenum] = true;
359
360	root	1.36	if (force_image_newmap)
361			force_newmap = true;
362
363	root	1.32	packet sl;
364	root	1.30
365	root	1.32	sl << (image2 ? "image2 " : "image ")
366			<< uint32 (facenum);
367	root	1.6
368	root	1.32	if (image2)
369			sl << uint8 (0);
370	root	1.6
371	root	1.32	sl << uint32 (d->data.size ())
372			<< data (d->data.data (), d->data.size ());
373	root	1.31
374	root	1.32	send_packet (sl);
375	root	1.28	}
376
377			// send all faces of this object to the client
378			// this uses more bandwidth initially, but makes
379			// animations look much smoother, and every client
380			// is supposed to do client-side caching anyways.
381			void
382			client::send_faces (object *ob)
383			{
384			send_face (ob->face);
385
386			if (ob->animation_id)
387			{
388			animation &anim = animations [ob->animation_id];
389
390			for (int i = 0; i < anim.num_animations; i++)
391			send_face (anim.faces [i]);
392			}
393			}
394
395			/**
396			* Need to send an animation sequence to the client.
397			* We will send appropriate face commands to the client if we haven't
398			* sent them the face yet (this can become quite costly in terms of
399			* how much we are sending - on the other hand, this should only happen
400			* when the player logs in and picks stuff up.
401			*/
402			void
403			client::send_animation (short anim_num)
404			{
405			/* Do some checking on the anim_num we got. Note that the animations
406			* are added in contigous order, so if the number is in the valid
407			* range, it must be a valid animation.
408			*/
409	root	1.41	if (anim_num < 0 \|\| anim_num >= animations.size ())
410	root	1.28	{
411			LOG (llevError, "esrv_send_anim (%d) out of bounds??\n", anim_num);
412			return;
413			}
414
415			packet sl ("anim");
416
417			sl << uint16 (anim_num)
418			<< uint16 (0); /* flags - not used right now */
419
420			/* Build up the list of faces. Also, send any information (ie, the
421			* the face itself) down to the client.
422			*/
423			for (int i = 0; i < animations[anim_num].num_animations; i++)
424			{
425			send_face (animations[anim_num].faces[i]);
426			sl << uint16 (animations[anim_num].faces[i]); /* flags - not used right now */
427	elmex	1.1	}
428	root	1.6
429	root	1.28	send_packet (sl);
430
431			anims_sent[anim_num] = 1;
432	elmex	1.1	}
433
434			/**
435			* Sends the number of images, checksum of the face file,
436			* and the image_info file information. See the doc/Developers/protocol
437			* if you want further detail.
438			*/
439	root	1.3	void
440	root	1.15	send_image_info (client ns, char params)
441	elmex	1.1	{
442	root	1.8	packet sl;
443	elmex	1.1
444	root	1.24	//TODO: second parameter is a checksum, but it makes no sense in this current framework
445			sl.printf ("replyinfo image_info\n%d\n%u\n", MAX_FACES, 0);
446	root	1.6
447	root	1.24	sl << "0:base:standard:0:32x32:none:The old 32x32 faceset.\n";
448	elmex	1.1
449	root	1.11	ns->send_packet (sl);
450	elmex	1.1	}
451
452			/**
453			* Sends requested face information.
454			* \param ns socket to send to
455			* \param params contains first and last index of face
456			*
457			* For each image in [start..stop] sends
458			* - checksum
459			* - name
460			*/
461	root	1.3	void
462	root	1.15	send_image_sums (client ns, char params)
463	elmex	1.1	{
464	root	1.3	int start, stop;
465	pippijn	1.22	char *cp;
466	root	1.3
467	root	1.8	packet sl;
468	root	1.3
469			start = atoi (params);
470			for (cp = params; *cp != '\0'; cp++)
471			if (*cp == ' ')
472			break;
473
474			stop = atoi (cp);
475	root	1.24	if (stop < start \|\| *cp == '\0' \|\| (stop - start) > 1000 \|\| stop >= MAX_FACES)
476	root	1.3	{
477	root	1.7	sl.printf ("replyinfo image_sums %d %d", start, stop);
478			ns->send_packet (sl);
479			sl.reset ();
480	root	1.3	return;
481			}
482
483	root	1.6	sl.printf ("replyinfo image_sums %d %d ", start, stop);
484	root	1.3
485	root	1.24	for (int i = start; i <= stop && i < faces.size (); i++)
486	root	1.3	{
487	root	1.30	ns->faces_sent[i] = true;
488	root	1.3
489	root	1.24	const facedata *d = face_data (i, ns->faceset);
490	root	1.6
491	root	1.24	if (sl.room () < 2 + 4 + 1 + d->data.size () + 1)
492	root	1.23	break;
493
494	root	1.6	sl << uint16 (i)
495	root	1.24	<< uint32 (0) // checksum
496			<< uint8 (ns->faceset);
497
498			print_facename (sl, *d); sl << uint8 (0);
499	root	1.3	}
500	root	1.6
501	root	1.3	/* It would make more sense to catch this pre-emptively in the code above.
502			* however, if this really happens, we probably just want to cut down the
503			* size to less than 1000, since that is what we claim the protocol would
504			* support.
505			*/
506	root	1.23	//TODO: taken care of above, should simply abort or make sure the above code is correct
507	root	1.9	if (sl.length () >= MAXSOCKBUF)
508	root	1.3	{
509	root	1.9	LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
510	root	1.3	abort ();
511	elmex	1.1	}
512	root	1.6
513	root	1.11	ns->send_packet (sl);
514	elmex	1.1	}
515	root	1.6