server/socket/image.C

/*
    CrossFire, A Multiplayer game for X-windows

    Copyright (C) 2001 Mark Wedel
    Copyright (C) 1992 Frank Tore Johansen

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    The author 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>

#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 < nrofpixmaps; 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

/**
 * Loads all the image types into memory.
 *
 *  This  way, we can easily send them to the client.  We should really do something
 * better than abort on any errors - on the other hand, these are all fatal
 * to the server (can't work around them), but the abort just seems a bit
 * messy (exit would probably be better.)
 *
 * Couple of notes:  We assume that the faces are in a continous block.
 * This works fine for now, but this could perhaps change in the future
 *
 * Function largely rewritten May 2000 to be more general purpose.
 * The server itself does not care what the image data is - to the server,
 * it is just data it needs to allocate.  As such, the code is written
 * to do such.
 */
void
read_client_images (void)
{
  char filename[400];
  char buf[HUGE_BUF];
  char *cp, *cps[7];
  FILE *infile;
  int num, len, compressed, fileno, i, badline;

  memset (facesets, 0, sizeof (facesets));
  sprintf (filename, "%s/image_info", settings.datadir);
  if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
    {
      LOG (llevError, "Unable to open %s\n", filename);
      abort ();
    }

  while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
    {
      badline = 0;

      if (buf[0] == '#')
        continue;

      if (!(cps[0] = strtok (buf, ":")))
        badline = 1;

      for (i = 1; i < 7; i++)
        if (!(cps[i] = strtok (NULL, ":")))
          badline = 1;

      if (badline)
        LOG (llevError, "Bad line in image_info file, ignoring line:\n  %s", buf);
      else
        {
          len = atoi (cps[0]);
          if (len >= MAX_FACE_SETS)
            {
              LOG (llevError, "To high a setnum in image_info file: %d > %d\n", len, MAX_FACE_SETS);
              abort ();
            }
          facesets[len].prefix = strdup (cps[1]);
          facesets[len].fullname = strdup (cps[2]);
          facesets[len].fallback = atoi (cps[3]);
          facesets[len].size = strdup (cps[4]);
          facesets[len].extension = strdup (cps[5]);
          facesets[len].comment = strdup (cps[6]);
        }
    }

  close_and_delete (infile, compressed);

  for (i = 0; i < MAX_FACE_SETS; i++)
    {
      if (facesets[i].prefix)
        check_faceset_fallback (i, MAX_FACE_SETS);
    }

  /* Loaded the faceset information - now need to load up the
   * actual faces.
   */

  for (fileno = 0; fileno < MAX_FACE_SETS; fileno++)
    {
      /* if prefix is not set, this is not used */
      if (!facesets[fileno].prefix)
        continue;

      facesets[fileno].faces = (FaceInfo *) calloc (nrofpixmaps, sizeof (FaceInfo));

      sprintf (filename, "%s/crossfire.%d", settings.datadir, fileno);
      LOG (llevDebug, "Loading image file %s\n", filename);

      if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
        {
          LOG (llevError, "Unable to open %s\n", filename);
          abort ();
        }

      while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
        {
          if (strncmp (buf, "IMAGE ", 6) != 0)
            {
              LOG (llevError, "read_client_images:Bad image line - not IMAGE, instead\n%s", buf);
              abort ();
            }

          num = atoi (buf + 6);
          if (num < 0 || num >= nrofpixmaps)
            {
              LOG (llevError, "read_client_images: Image num %d not in 0..%d\n%s", num, nrofpixmaps, buf);
              abort ();
            }

          /* Skip accross the number data */
          for (cp = buf + 6; *cp != ' '; cp++);
          len = atoi (cp);
          if (len == 0 || len > MAX_IMAGE_SIZE)
            {
              LOG (llevError, "read_client_images: length not valid: %d > %d \n%s", len, MAX_IMAGE_SIZE, buf);
              abort ();
            }

          /* We don't actualy care about the name of the image that
           * is embedded in the image file, so just ignore it.
           */
          facesets[fileno].faces[num].datalen = len;
          facesets[fileno].faces[num].data = (uint8 *) malloc (len);
          if ((i = fread (facesets[fileno].faces[num].data, len, 1, infile)) != 1)
            {
              LOG (llevError, "read_client_images: Did not read desired amount of data, wanted %d, got %d\n%s", len, i, buf);
              abort ();
            }

          facesets[fileno].faces[num].checksum = 0;
          for (i = 0; i < len; i++)
            {
              ROTATE_RIGHT (facesets[fileno].faces[num].checksum);
              facesets[fileno].faces[num].checksum += facesets[fileno].faces[num].data[i];
              facesets[fileno].faces[num].checksum &= 0xffffffff;
            }
        }

      close_and_delete (infile, compressed);
    }                           /* For fileno < MAX_FACE_SETS */
}

/**
 * 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)
{
  uint16 facenum = atoi (buf);

  if (facenum != 0)
    esrv_send_face (ns, facenum, 1);
}

/**
 * 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
esrv_send_face (client *ns, short face_num, int nocache)
{
  char fallback;

  if (face_num <= 0 || face_num >= nrofpixmaps)
    {
      LOG (llevError, "esrv_send_face (%d) out of bounds??\n", face_num);
      return;
    }

  packet sl;
  fallback = get_face_fallback (ns->faceset, face_num);

  if (facesets[fallback].faces[face_num].data == NULL)
    {
      LOG (llevError, "esrv_send_face: faces[%d].data == NULL\n", face_num);
      return;
    }

  if (ns->facecache && !nocache)
    {
      sl << (ns->image2 ? "face2 " : "face1 ")
         << uint16 (face_num);

      if (ns->image2)
        sl << uint8 (fallback);

      sl << uint32 (facesets[fallback].faces[face_num].checksum)
         << new_faces[face_num].name;

      ns->send_packet (sl);
    }
  else
    {
      sl << (ns->image2 ? "image2 " : "image ")
         << uint32 (face_num);

      if (ns->image2)
        sl << uint8 (fallback);

      sl << uint32 (facesets[fallback].faces[face_num].datalen)
         << data (facesets[fallback].faces[face_num].data, facesets[fallback].faces[face_num].datalen);

      ns->send_packet (sl);
    }

  ns->faces_sent[face_num] |= NS_FACESENT_FACE;
}

/**
 * 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;

  sl.printf ("replyinfo image_info\n%d\n%d\n", nrofpixmaps - 1, bmaps_checksum);

  for (int i = 0; i < MAX_FACE_SETS; i++)
    if (facesets[i].prefix)
      sl.printf ("%d:%s:%s:%d:%s:%s:%s", i,
                 facesets[i].prefix, facesets[i].fullname , facesets[i].fallback,
                 facesets[i].size  , facesets[i].extension, facesets[i].comment);

  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, buf[MAX_BUF];

  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 >= nrofpixmaps)
    {
      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++)
    {
      ns->faces_sent[i] |= NS_FACESENT_FACE;

      int qq = get_face_fallback (ns->faceset, i);

      sl << uint16 (i)
         << uint32 (facesets[qq].faces[i].checksum)
         << uint8  (qq)
         << data8  (&new_faces[i].name, new_faces[i].name.length () + 1);
    }

  /* 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.
   */
  if (sl.length () >= MAXSOCKBUF)
    {
      LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
      abort ();
    }

  ns->send_packet (sl);
}

Revision:	1.15
Committed:	Sat Dec 16 22:14:42 2006 UTC (17 years, 6 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.14:	+29 -21 lines
Log Message:	just reformats
#	Content
1	/*
2	CrossFire, A Multiplayer game for X-windows
3
4	Copyright (C) 2001 Mark Wedel
5	Copyright (C) 1992 Frank Tore Johansen
6
7	This program is free software; you can redistribute it and/or modify
8	it under the terms of the GNU General Public License as published by
9	the Free Software Foundation; either version 2 of the License, or
10	(at your option) any later version.
11
12	This program is distributed in the hope that it will be useful,
13	but WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	GNU General Public License for more details.
16
17	You should have received a copy of the GNU General Public License
18	along with this program; if not, write to the Free Software
19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20
21	The author can be reached via e-mail to <crossfire@schmorp.de>
22	*/
23
24	/** \file
25	* Image related communication
26	*
27	* \date 2003-12-02
28	*
29	* This file deals with the image related communication to the
30	* client. I've located all the functions in this file - this
31	* localizes it more, and means that we don't need to declare
32	* things like all the structures as globals.
33	*/
34
35	#include <global.h>
36	#include <sproto.h>
37
38	#define MAX_FACE_SETS 20 /*< Maximum number of image sets the program will handle /
39
40	/** Information about one image */
41	typedef struct FaceInfo
42	{
43	uint8 data; /< image data /
44	uint16 datalen; /*< length of the xpm data /
45	uint32 checksum; /*< Checksum of face data /
46	} FaceInfo;
47
48	/** Information about one face set */
49	typedef struct
50	{
51	char prefix; /< /
52	char *fullname;
53
54	uint8 fallback; /*< faceset to use when an image is not found in this faceset /
55	char *size;
56	char *extension;
57	char *comment;
58
59	FaceInfo faces; /< images in this faceset /
60	} FaceSets;
61
62	static FaceSets facesets[MAX_FACE_SETS]; /*< All facesets /
63
64	/**
65	* Checks specified faceset is valid
66	* \param fsn faceset number
67	*/
68	int
69	is_valid_faceset (int fsn)
70	{
71	if (fsn >= 0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix)
72	return TRUE;
73	return FALSE;
74	}
75
76	/**
77	* Frees all faceset information
78	*/
79	void
80	free_socket_images (void)
81	{
82	int num, q;
83
84	for (num = 0; num < MAX_FACE_SETS; num++)
85	{
86	if (facesets[num].prefix)
87	{
88	for (q = 0; q < nrofpixmaps; q++)
89	if (facesets[num].faces[q].data)
90	free (facesets[num].faces[q].data);
91
92	free (facesets[num].prefix);
93	free (facesets[num].fullname);
94	free (facesets[num].size);
95	free (facesets[num].extension);
96	free (facesets[num].comment);
97	free (facesets[num].faces);
98	}
99	}
100	}
101
102	/**
103	* This returns the set we will actually use when sending
104	* a face. This is used because the image files may be sparse.
105	* This function is recursive. imageno is the face number we are
106	* trying to send
107	*
108	* If face is not found in specified faceset, tries with 'fallback' faceset.
109	*
110	* \param faceset faceset to check
111	* \param imageno image number
112	*
113	*/
114	static int
115	get_face_fallback (int faceset, int imageno)
116	{
117	/* faceset 0 is supposed to have every image, so just return. Doing
118	* so also prevents infinite loops in the case if it not having
119	* the face, but in that case, we are likely to crash when we try
120	* to access the data, but that is probably preferable to an infinite
121	* loop.
122	*/
123	if (faceset == 0)
124	return 0;
125
126	if (!facesets[faceset].prefix)
127	{
128	LOG (llevError, "get_face_fallback called with unused set (%d)?\n", faceset);
129	return 0; /* use default set */
130	}
131
132	if (facesets[faceset].faces[imageno].data)
133	return faceset;
134
135	return get_face_fallback (facesets[faceset].fallback, imageno);
136	}
137
138	/**
139	* Checks fallback are correctly defined.
140	* This is a simple recursive function that makes sure the fallbacks
141	* are all proper (eg, the fall back to defined sets, and also
142	* eventually fall back to 0). At the top level, togo is set to MAX_FACE_SETS,
143	* if togo gets to zero, it means we have a loop.
144	* This is only run when we first load the facesets.
145	*/
146	static void
147	check_faceset_fallback (int faceset, int togo)
148	{
149	int fallback = facesets[faceset].fallback;
150
151	/* proper case - falls back to base set */
152	if (fallback == 0)
153	return;
154
155	if (!facesets[fallback].prefix)
156	{
157	LOG (llevError, "Face set %d falls to non set faceset %d\n", faceset, fallback);
158	abort ();
159	}
160
161	togo--;
162	if (togo == 0)
163	{
164	LOG (llevError, "Infinite loop found in facesets. aborting.\n");
165	abort ();
166	}
167
168	check_faceset_fallback (fallback, togo);
169	}
170
171	#define MAX_IMAGE_SIZE 10000
172
173	/**
174	* Loads all the image types into memory.
175	*
176	* This way, we can easily send them to the client. We should really do something
177	* better than abort on any errors - on the other hand, these are all fatal
178	* to the server (can't work around them), but the abort just seems a bit
179	* messy (exit would probably be better.)
180	*
181	* Couple of notes: We assume that the faces are in a continous block.
182	* This works fine for now, but this could perhaps change in the future
183	*
184	* Function largely rewritten May 2000 to be more general purpose.
185	* The server itself does not care what the image data is - to the server,
186	* it is just data it needs to allocate. As such, the code is written
187	* to do such.
188	*/
189	void
190	read_client_images (void)
191	{
192	char filename[400];
193	char buf[HUGE_BUF];
194	char cp, cps[7];
195	FILE *infile;
196	int num, len, compressed, fileno, i, badline;
197
198	memset (facesets, 0, sizeof (facesets));
199	sprintf (filename, "%s/image_info", settings.datadir);
200	if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
201	{
202	LOG (llevError, "Unable to open %s\n", filename);
203	abort ();
204	}
205
206	while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
207	{
208	badline = 0;
209
210	if (buf[0] == '#')
211	continue;
212
213	if (!(cps[0] = strtok (buf, ":")))
214	badline = 1;
215
216	for (i = 1; i < 7; i++)
217	if (!(cps[i] = strtok (NULL, ":")))
218	badline = 1;
219
220	if (badline)
221	LOG (llevError, "Bad line in image_info file, ignoring line:\n %s", buf);
222	else
223	{
224	len = atoi (cps[0]);
225	if (len >= MAX_FACE_SETS)
226	{
227	LOG (llevError, "To high a setnum in image_info file: %d > %d\n", len, MAX_FACE_SETS);
228	abort ();
229	}
230	facesets[len].prefix = strdup (cps[1]);
231	facesets[len].fullname = strdup (cps[2]);
232	facesets[len].fallback = atoi (cps[3]);
233	facesets[len].size = strdup (cps[4]);
234	facesets[len].extension = strdup (cps[5]);
235	facesets[len].comment = strdup (cps[6]);
236	}
237	}
238
239	close_and_delete (infile, compressed);
240
241	for (i = 0; i < MAX_FACE_SETS; i++)
242	{
243	if (facesets[i].prefix)
244	check_faceset_fallback (i, MAX_FACE_SETS);
245	}
246
247	/* Loaded the faceset information - now need to load up the
248	* actual faces.
249	*/
250
251	for (fileno = 0; fileno < MAX_FACE_SETS; fileno++)
252	{
253	/* if prefix is not set, this is not used */
254	if (!facesets[fileno].prefix)
255	continue;
256
257	facesets[fileno].faces = (FaceInfo *) calloc (nrofpixmaps, sizeof (FaceInfo));
258
259	sprintf (filename, "%s/crossfire.%d", settings.datadir, fileno);
260	LOG (llevDebug, "Loading image file %s\n", filename);
261
262	if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
263	{
264	LOG (llevError, "Unable to open %s\n", filename);
265	abort ();
266	}
267
268	while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
269	{
270	if (strncmp (buf, "IMAGE ", 6) != 0)
271	{
272	LOG (llevError, "read_client_images:Bad image line - not IMAGE, instead\n%s", buf);
273	abort ();
274	}
275
276	num = atoi (buf + 6);
277	if (num < 0 \|\| num >= nrofpixmaps)
278	{
279	LOG (llevError, "read_client_images: Image num %d not in 0..%d\n%s", num, nrofpixmaps, buf);
280	abort ();
281	}
282
283	/* Skip accross the number data */
284	for (cp = buf + 6; *cp != ' '; cp++);
285	len = atoi (cp);
286	if (len == 0 \|\| len > MAX_IMAGE_SIZE)
287	{
288	LOG (llevError, "read_client_images: length not valid: %d > %d \n%s", len, MAX_IMAGE_SIZE, buf);
289	abort ();
290	}
291
292	/* We don't actualy care about the name of the image that
293	* is embedded in the image file, so just ignore it.
294	*/
295	facesets[fileno].faces[num].datalen = len;
296	facesets[fileno].faces[num].data = (uint8 *) malloc (len);
297	if ((i = fread (facesets[fileno].faces[num].data, len, 1, infile)) != 1)
298	{
299	LOG (llevError, "read_client_images: Did not read desired amount of data, wanted %d, got %d\n%s", len, i, buf);
300	abort ();
301	}
302
303	facesets[fileno].faces[num].checksum = 0;
304	for (i = 0; i < len; i++)
305	{
306	ROTATE_RIGHT (facesets[fileno].faces[num].checksum);
307	facesets[fileno].faces[num].checksum += facesets[fileno].faces[num].data[i];
308	facesets[fileno].faces[num].checksum &= 0xffffffff;
309	}
310	}
311
312	close_and_delete (infile, compressed);
313	} /* For fileno < MAX_FACE_SETS */
314	}
315
316	/**
317	* Client tells us what type of faces it wants. Also sets
318	* the caching attribute.
319	*
320	*/
321	void
322	SetFaceMode (char buf, int len, client ns)
323	{
324	int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE);
325
326	if (mode == CF_FACE_NONE)
327	ns->facecache = 1;
328	else if (mode != CF_FACE_PNG)
329	ns->send_packet_printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode. Will use Png");
330
331	if (mask)
332	ns->facecache = 1;
333	}
334
335	/**
336	* Client has requested pixmap that it somehow missed getting.
337	* This will be called often if the client is
338	* caching images.
339	*/
340	void
341	SendFaceCmd (char buf, int len, client ns)
342	{
343	uint16 facenum = atoi (buf);
344
345	if (facenum != 0)
346	esrv_send_face (ns, facenum, 1);
347	}
348
349	/**
350	* Sends a face to a client if they are in pixmap mode
351	* nothing gets sent in bitmap mode.
352	* If nocache is true (nonzero), ignore the cache setting from the client -
353	* this is needed for the askface, in which we really do want to send the
354	* face (and askface is the only place that should be setting it). Otherwise,
355	* we look at the facecache, and if set, send the image name.
356	*/
357	void
358	esrv_send_face (client *ns, short face_num, int nocache)
359	{
360	char fallback;
361
362	if (face_num <= 0 \|\| face_num >= nrofpixmaps)
363	{
364	LOG (llevError, "esrv_send_face (%d) out of bounds??\n", face_num);
365	return;
366	}
367
368	packet sl;
369	fallback = get_face_fallback (ns->faceset, face_num);
370
371	if (facesets[fallback].faces[face_num].data == NULL)
372	{
373	LOG (llevError, "esrv_send_face: faces[%d].data == NULL\n", face_num);
374	return;
375	}
376
377	if (ns->facecache && !nocache)
378	{
379	sl << (ns->image2 ? "face2 " : "face1 ")
380	<< uint16 (face_num);
381
382	if (ns->image2)
383	sl << uint8 (fallback);
384
385	sl << uint32 (facesets[fallback].faces[face_num].checksum)
386	<< new_faces[face_num].name;
387
388	ns->send_packet (sl);
389	}
390	else
391	{
392	sl << (ns->image2 ? "image2 " : "image ")
393	<< uint32 (face_num);
394
395	if (ns->image2)
396	sl << uint8 (fallback);
397
398	sl << uint32 (facesets[fallback].faces[face_num].datalen)
399	<< data (facesets[fallback].faces[face_num].data, facesets[fallback].faces[face_num].datalen);
400
401	ns->send_packet (sl);
402	}
403
404	ns->faces_sent[face_num] \|= NS_FACESENT_FACE;
405	}
406
407	/**
408	* Sends the number of images, checksum of the face file,
409	* and the image_info file information. See the doc/Developers/protocol
410	* if you want further detail.
411	*/
412
413	void
414	send_image_info (client ns, char params)
415	{
416	packet sl;
417
418	sl.printf ("replyinfo image_info\n%d\n%d\n", nrofpixmaps - 1, bmaps_checksum);
419
420	for (int i = 0; i < MAX_FACE_SETS; i++)
421	if (facesets[i].prefix)
422	sl.printf ("%d:%s:%s:%d:%s:%s:%s", i,
423	facesets[i].prefix, facesets[i].fullname , facesets[i].fallback,
424	facesets[i].size , facesets[i].extension, facesets[i].comment);
425
426	ns->send_packet (sl);
427	}
428
429	/**
430	* Sends requested face information.
431	* \param ns socket to send to
432	* \param params contains first and last index of face
433	*
434	* For each image in [start..stop] sends
435	* - checksum
436	* - name
437	*/
438	void
439	send_image_sums (client ns, char params)
440	{
441	int start, stop;
442	char *cp, buf[MAX_BUF];
443
444	packet sl;
445
446	start = atoi (params);
447	for (cp = params; *cp != '\0'; cp++)
448	if (*cp == ' ')
449	break;
450
451	stop = atoi (cp);
452	if (stop < start \|\| *cp == '\0' \|\| (stop - start) > 1000 \|\| stop >= nrofpixmaps)
453	{
454	sl.printf ("replyinfo image_sums %d %d", start, stop);
455	ns->send_packet (sl);
456	sl.reset ();
457	return;
458	}
459
460	sl.printf ("replyinfo image_sums %d %d ", start, stop);
461
462	for (int i = start; i <= stop; i++)
463	{
464	ns->faces_sent[i] \|= NS_FACESENT_FACE;
465
466	int qq = get_face_fallback (ns->faceset, i);
467
468	sl << uint16 (i)
469	<< uint32 (facesets[qq].faces[i].checksum)
470	<< uint8 (qq)
471	<< data8 (&new_faces[i].name, new_faces[i].name.length () + 1);
472	}
473
474	/* It would make more sense to catch this pre-emptively in the code above.
475	* however, if this really happens, we probably just want to cut down the
476	* size to less than 1000, since that is what we claim the protocol would
477	* support.
478	*/
479	if (sl.length () >= MAXSOCKBUF)
480	{
481	LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
482	abort ();
483	}
484
485	ns->send_packet (sl);
486	}
487