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)
    {
      packet sl;
      sl.printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode.  Will use Png");
      ns->send_packet (sl);
    }

  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 *buff, int len, client * ns)
{
  long tmpnum = atoi (buff);
  short facenum = tmpnum & 0xffff;

  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:	1.13
Committed:	Fri Dec 15 19:59:20 2006 UTC (17 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.12:	+5 -11 lines
Log Message:	the rename for sanity campaign hits you died - renamed stuff - partially updated copyrights - some cleanups
#	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
44	uint8 data; /< image data /
45	uint16 datalen; /*< length of the xpm data /
46	uint32 checksum; /*< Checksum of face data /
47	} FaceInfo;
48
49	/** Information about one face set */
50	typedef struct
51	{
52
53	char prefix; /< /
54	char *fullname;
55
56	uint8 fallback; /*< faceset to use when an image is not found in this faceset /
57	char *size;
58	char *extension;
59	char *comment;
60
61	FaceInfo faces; /< images in this faceset /
62	} FaceSets;
63
64	static FaceSets facesets[MAX_FACE_SETS]; /*< All facesets /
65
66	/**
67	* Checks specified faceset is valid
68	* \param fsn faceset number
69	*/
70	int
71	is_valid_faceset (int fsn)
72	{
73	if (fsn >= 0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix)
74	return TRUE;
75	return FALSE;
76	}
77
78	/**
79	* Frees all faceset information
80	*/
81	void
82	free_socket_images (void)
83	{
84	int num, q;
85
86	for (num = 0; num < MAX_FACE_SETS; num++)
87	{
88	if (facesets[num].prefix)
89	{
90	for (q = 0; q < nrofpixmaps; q++)
91	if (facesets[num].faces[q].data)
92	free (facesets[num].faces[q].data);
93	free (facesets[num].prefix);
94	free (facesets[num].fullname);
95	free (facesets[num].size);
96	free (facesets[num].extension);
97	free (facesets[num].comment);
98	free (facesets[num].faces);
99	}
100	}
101	}
102
103	/**
104	* This returns the set we will actually use when sending
105	* a face. This is used because the image files may be sparse.
106	* This function is recursive. imageno is the face number we are
107	* trying to send
108	*
109	* If face is not found in specified faceset, tries with 'fallback' faceset.
110	*
111	* \param faceset faceset to check
112	* \param imageno image number
113	*
114	*/
115	static int
116	get_face_fallback (int faceset, int imageno)
117	{
118	/* faceset 0 is supposed to have every image, so just return. Doing
119	* so also prevents infinite loops in the case if it not having
120	* the face, but in that case, we are likely to crash when we try
121	* to access the data, but that is probably preferable to an infinite
122	* loop.
123	*/
124	if (faceset == 0)
125	return 0;
126
127	if (!facesets[faceset].prefix)
128	{
129	LOG (llevError, "get_face_fallback called with unused set (%d)?\n", faceset);
130	return 0; /* use default set */
131	}
132	if (facesets[faceset].faces[imageno].data)
133	return faceset;
134	return get_face_fallback (facesets[faceset].fallback, imageno);
135	}
136
137	/**
138	* Checks fallback are correctly defined.
139	* This is a simple recursive function that makes sure the fallbacks
140	* are all proper (eg, the fall back to defined sets, and also
141	* eventually fall back to 0). At the top level, togo is set to MAX_FACE_SETS,
142	* if togo gets to zero, it means we have a loop.
143	* This is only run when we first load the facesets.
144	*/
145	static void
146	check_faceset_fallback (int faceset, int togo)
147	{
148	int fallback = facesets[faceset].fallback;
149
150	/* proper case - falls back to base set */
151	if (fallback == 0)
152	return;
153
154	if (!facesets[fallback].prefix)
155	{
156	LOG (llevError, "Face set %d falls to non set faceset %d\n", faceset, fallback);
157	abort ();
158	}
159	togo--;
160	if (togo == 0)
161	{
162	LOG (llevError, "Infinite loop found in facesets. aborting.\n");
163	abort ();
164	}
165	check_faceset_fallback (fallback, togo);
166	}
167
168	#define MAX_IMAGE_SIZE 10000
169
170	/**
171	* Loads all the image types into memory.
172	*
173	* This way, we can easily send them to the client. We should really do something
174	* better than abort on any errors - on the other hand, these are all fatal
175	* to the server (can't work around them), but the abort just seems a bit
176	* messy (exit would probably be better.)
177	*
178	* Couple of notes: We assume that the faces are in a continous block.
179	* This works fine for now, but this could perhaps change in the future
180	*
181	* Function largely rewritten May 2000 to be more general purpose.
182	* The server itself does not care what the image data is - to the server,
183	* it is just data it needs to allocate. As such, the code is written
184	* to do such.
185	*/
186
187	void
188	read_client_images (void)
189	{
190	char filename[400];
191	char buf[HUGE_BUF];
192	char cp, cps[7];
193	FILE *infile;
194	int num, len, compressed, fileno, i, badline;
195
196	memset (facesets, 0, sizeof (facesets));
197	sprintf (filename, "%s/image_info", settings.datadir);
198	if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
199	{
200	LOG (llevError, "Unable to open %s\n", filename);
201	abort ();
202	}
203	while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
204	{
205	badline = 0;
206
207	if (buf[0] == '#')
208	continue;
209	if (!(cps[0] = strtok (buf, ":")))
210	badline = 1;
211	for (i = 1; i < 7; i++)
212	{
213	if (!(cps[i] = strtok (NULL, ":")))
214	badline = 1;
215	}
216	if (badline)
217	{
218	LOG (llevError, "Bad line in image_info file, ignoring line:\n %s", buf);
219	}
220	else
221	{
222	len = atoi (cps[0]);
223	if (len >= MAX_FACE_SETS)
224	{
225	LOG (llevError, "To high a setnum in image_info file: %d > %d\n", len, MAX_FACE_SETS);
226	abort ();
227	}
228	facesets[len].prefix = strdup (cps[1]);
229	facesets[len].fullname = strdup (cps[2]);
230	facesets[len].fallback = atoi (cps[3]);
231	facesets[len].size = strdup (cps[4]);
232	facesets[len].extension = strdup (cps[5]);
233	facesets[len].comment = strdup (cps[6]);
234	}
235	}
236	close_and_delete (infile, compressed);
237	for (i = 0; i < MAX_FACE_SETS; i++)
238	{
239	if (facesets[i].prefix)
240	check_faceset_fallback (i, MAX_FACE_SETS);
241	}
242	/* Loaded the faceset information - now need to load up the
243	* actual faces.
244	*/
245
246	for (fileno = 0; fileno < MAX_FACE_SETS; fileno++)
247	{
248	/* if prefix is not set, this is not used */
249	if (!facesets[fileno].prefix)
250	continue;
251	facesets[fileno].faces = (FaceInfo *) calloc (nrofpixmaps, sizeof (FaceInfo));
252
253	sprintf (filename, "%s/crossfire.%d", settings.datadir, fileno);
254	LOG (llevDebug, "Loading image file %s\n", filename);
255
256	if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
257	{
258	LOG (llevError, "Unable to open %s\n", filename);
259	abort ();
260	}
261	while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
262	{
263	if (strncmp (buf, "IMAGE ", 6) != 0)
264	{
265	LOG (llevError, "read_client_images:Bad image line - not IMAGE, instead\n%s", buf);
266	abort ();
267	}
268	num = atoi (buf + 6);
269	if (num < 0 \|\| num >= nrofpixmaps)
270	{
271	LOG (llevError, "read_client_images: Image num %d not in 0..%d\n%s", num, nrofpixmaps, buf);
272	abort ();
273	}
274	/* Skip accross the number data */
275	for (cp = buf + 6; *cp != ' '; cp++);
276	len = atoi (cp);
277	if (len == 0 \|\| len > MAX_IMAGE_SIZE)
278	{
279	LOG (llevError, "read_client_images: length not valid: %d > %d \n%s", len, MAX_IMAGE_SIZE, buf);
280	abort ();
281	}
282	/* We don't actualy care about the name of the image that
283	* is embedded in the image file, so just ignore it.
284	*/
285	facesets[fileno].faces[num].datalen = len;
286	facesets[fileno].faces[num].data = (uint8 *) malloc (len);
287	if ((i = fread (facesets[fileno].faces[num].data, len, 1, infile)) != 1)
288	{
289	LOG (llevError, "read_client_images: Did not read desired amount of data, wanted %d, got %d\n%s", len, i, buf);
290	abort ();
291	}
292	facesets[fileno].faces[num].checksum = 0;
293	for (i = 0; i < len; i++)
294	{
295	ROTATE_RIGHT (facesets[fileno].faces[num].checksum);
296	facesets[fileno].faces[num].checksum += facesets[fileno].faces[num].data[i];
297	facesets[fileno].faces[num].checksum &= 0xffffffff;
298	}
299	}
300	close_and_delete (infile, compressed);
301	} /* For fileno < MAX_FACE_SETS */
302	}
303
304	/**
305	* Client tells us what type of faces it wants. Also sets
306	* the caching attribute.
307	*
308	*/
309
310	void
311	SetFaceMode (char buf, int len, client ns)
312	{
313	int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE);
314
315	if (mode == CF_FACE_NONE)
316	ns->facecache = 1;
317	else if (mode != CF_FACE_PNG)
318	{
319	packet sl;
320	sl.printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode. Will use Png");
321	ns->send_packet (sl);
322	}
323
324	if (mask)
325	ns->facecache = 1;
326	}
327
328	/**
329	* Client has requested pixmap that it somehow missed getting.
330	* This will be called often if the client is
331	* caching images.
332	*/
333
334	void
335	SendFaceCmd (char buff, int len, client ns)
336	{
337	long tmpnum = atoi (buff);
338	short facenum = tmpnum & 0xffff;
339
340	if (facenum != 0)
341	esrv_send_face (ns, facenum, 1);
342	}
343
344	/**
345	* Sends a face to a client if they are in pixmap mode
346	* nothing gets sent in bitmap mode.
347	* If nocache is true (nonzero), ignore the cache setting from the client -
348	* this is needed for the askface, in which we really do want to send the
349	* face (and askface is the only place that should be setting it). Otherwise,
350	* we look at the facecache, and if set, send the image name.
351	*/
352
353	void
354	esrv_send_face (client *ns, short face_num, int nocache)
355	{
356	char fallback;
357
358	if (face_num <= 0 \|\| face_num >= nrofpixmaps)
359	{
360	LOG (llevError, "esrv_send_face (%d) out of bounds??\n", face_num);
361	return;
362	}
363
364	packet sl;
365	fallback = get_face_fallback (ns->faceset, face_num);
366
367	if (facesets[fallback].faces[face_num].data == NULL)
368	{
369	LOG (llevError, "esrv_send_face: faces[%d].data == NULL\n", face_num);
370	return;
371	}
372
373	if (ns->facecache && !nocache)
374	{
375	sl << (ns->image2 ? "face2 " : "face1 ")
376	<< uint16 (face_num);
377
378	if (ns->image2)
379	sl << uint8 (fallback);
380
381	sl << uint32 (facesets[fallback].faces[face_num].checksum)
382	<< new_faces[face_num].name;
383
384	ns->send_packet (sl);
385	}
386	else
387	{
388	sl << (ns->image2 ? "image2 " : "image ")
389	<< uint32 (face_num);
390
391	if (ns->image2)
392	sl << uint8 (fallback);
393
394	sl << uint32 (facesets[fallback].faces[face_num].datalen)
395	<< data (facesets[fallback].faces[face_num].data, facesets[fallback].faces[face_num].datalen);
396
397	ns->send_packet (sl);
398	}
399
400	ns->faces_sent[face_num] \|= NS_FACESENT_FACE;
401	}
402
403	/**
404	* Sends the number of images, checksum of the face file,
405	* and the image_info file information. See the doc/Developers/protocol
406	* if you want further detail.
407	*/
408
409	void
410	send_image_info (client * ns, char *params)
411	{
412	packet sl;
413
414	sl.printf ("replyinfo image_info\n%d\n%d\n", nrofpixmaps - 1, bmaps_checksum);
415
416	for (int i = 0; i < MAX_FACE_SETS; i++)
417	if (facesets[i].prefix)
418	sl.printf ("%d:%s:%s:%d:%s:%s:%s",
419	i, facesets[i].prefix, facesets[i].fullname, facesets[i].fallback,
420	facesets[i].size, facesets[i].extension, facesets[i].comment);
421
422	ns->send_packet (sl);
423	}
424
425	/**
426	* Sends requested face information.
427	* \param ns socket to send to
428	* \param params contains first and last index of face
429	*
430	* For each image in [start..stop] sends
431	* - checksum
432	* - name
433	*/
434	void
435	send_image_sums (client * ns, char *params)
436	{
437	int start, stop;
438	char *cp, buf[MAX_BUF];
439
440	packet sl;
441
442	start = atoi (params);
443	for (cp = params; *cp != '\0'; cp++)
444	if (*cp == ' ')
445	break;
446
447	stop = atoi (cp);
448	if (stop < start \|\| *cp == '\0' \|\| (stop - start) > 1000 \|\| stop >= nrofpixmaps)
449	{
450	sl.printf ("replyinfo image_sums %d %d", start, stop);
451	ns->send_packet (sl);
452	sl.reset ();
453	return;
454	}
455
456	sl.printf ("replyinfo image_sums %d %d ", start, stop);
457
458	for (int i = start; i <= stop; i++)
459	{
460	ns->faces_sent[i] \|= NS_FACESENT_FACE;
461
462	int qq = get_face_fallback (ns->faceset, i);
463
464	sl << uint16 (i)
465	<< uint32 (facesets[qq].faces[i].checksum)
466	<< uint8 (qq)
467	<< data8 (&new_faces[i].name, new_faces[i].name.length () + 1);
468	}
469
470	/* It would make more sense to catch this pre-emptively in the code above.
471	* however, if this really happens, we probably just want to cut down the
472	* size to less than 1000, since that is what we claim the protocol would
473	* support.
474	*/
475	if (sl.length () >= MAXSOCKBUF)
476	{
477	LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
478	abort ();
479	}
480
481	ns->send_packet (sl);
482	}
483