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
#	User	Rev	Content
1	elmex	1.1	/*
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	root	1.4	The author can be reached via e-mail to <crossfire@schmorp.de>
22	elmex	1.1	*/
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	root	1.3	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	elmex	1.1	} FaceInfo;
47
48			/** Information about one face set */
49	root	1.3	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	elmex	1.1	} 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	root	1.3	int
69			is_valid_faceset (int fsn)
70	elmex	1.1	{
71	root	1.3	if (fsn >= 0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix)
72			return TRUE;
73			return FALSE;
74	elmex	1.1	}
75
76			/**
77			* Frees all faceset information
78			*/
79	root	1.3	void
80			free_socket_images (void)
81	elmex	1.1	{
82	root	1.3	int num, q;
83	elmex	1.1
84	root	1.3	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	root	1.15
92	root	1.3	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	root	1.2	}
99	elmex	1.1	}
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	root	1.3	static int
115			get_face_fallback (int faceset, int imageno)
116	elmex	1.1	{
117	root	1.3	/* 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	root	1.15
132	root	1.3	if (facesets[faceset].faces[imageno].data)
133			return faceset;
134	root	1.15
135	root	1.3	return get_face_fallback (facesets[faceset].fallback, imageno);
136	elmex	1.1	}
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	root	1.3	static void
147			check_faceset_fallback (int faceset, int togo)
148	elmex	1.1	{
149	root	1.3	int fallback = facesets[faceset].fallback;
150	elmex	1.1
151	root	1.3	/* 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	root	1.15
161	root	1.3	togo--;
162			if (togo == 0)
163			{
164			LOG (llevError, "Infinite loop found in facesets. aborting.\n");
165			abort ();
166	elmex	1.1	}
167	root	1.15
168	root	1.3	check_faceset_fallback (fallback, togo);
169	elmex	1.1	}
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	root	1.3	void
190			read_client_images (void)
191	elmex	1.1	{
192	root	1.3	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	root	1.15
206	root	1.3	while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
207			{
208			badline = 0;
209
210			if (buf[0] == '#')
211			continue;
212	root	1.15
213	root	1.3	if (!(cps[0] = strtok (buf, ":")))
214			badline = 1;
215	root	1.15
216	root	1.3	for (i = 1; i < 7; i++)
217	root	1.15	if (!(cps[i] = strtok (NULL, ":")))
218			badline = 1;
219
220	root	1.3	if (badline)
221	root	1.15	LOG (llevError, "Bad line in image_info file, ignoring line:\n %s", buf);
222	root	1.3	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	root	1.2	}
230	root	1.12	facesets[len].prefix = strdup (cps[1]);
231			facesets[len].fullname = strdup (cps[2]);
232	root	1.3	facesets[len].fallback = atoi (cps[3]);
233	root	1.12	facesets[len].size = strdup (cps[4]);
234			facesets[len].extension = strdup (cps[5]);
235			facesets[len].comment = strdup (cps[6]);
236	root	1.2	}
237	elmex	1.1	}
238	root	1.15
239	root	1.3	close_and_delete (infile, compressed);
240	root	1.15
241	root	1.3	for (i = 0; i < MAX_FACE_SETS; i++)
242			{
243			if (facesets[i].prefix)
244			check_faceset_fallback (i, MAX_FACE_SETS);
245			}
246	root	1.15
247	root	1.3	/* 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	root	1.15
257	root	1.3	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	root	1.2	}
267	root	1.15
268	root	1.3	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	root	1.2	}
275	root	1.15
276	root	1.3	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	root	1.2	}
282	root	1.15
283	root	1.3	/* 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	root	1.2	}
291	root	1.15
292	root	1.5	/* We don't actualy care about the name of the image that
293	root	1.3	* 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	root	1.2	}
302	root	1.15
303	root	1.3	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	root	1.2	}
310			}
311	root	1.15
312	root	1.3	close_and_delete (infile, compressed);
313			} /* For fileno < MAX_FACE_SETS */
314	elmex	1.1	}
315
316			/**
317			* Client tells us what type of faces it wants. Also sets
318			* the caching attribute.
319			*
320			*/
321	root	1.3	void
322	root	1.13	SetFaceMode (char buf, int len, client ns)
323	elmex	1.1	{
324	root	1.3	int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE);
325	elmex	1.1
326	root	1.3	if (mode == CF_FACE_NONE)
327	root	1.7	ns->facecache = 1;
328	root	1.3	else if (mode != CF_FACE_PNG)
329	root	1.14	ns->send_packet_printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode. Will use Png");
330	root	1.7
331	root	1.3	if (mask)
332	root	1.7	ns->facecache = 1;
333	elmex	1.1	}
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	root	1.3	void
341	root	1.15	SendFaceCmd (char buf, int len, client ns)
342	elmex	1.1	{
343	root	1.15	uint16 facenum = atoi (buf);
344	elmex	1.1
345	root	1.3	if (facenum != 0)
346			esrv_send_face (ns, facenum, 1);
347	elmex	1.1	}
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	root	1.3	void
358	root	1.13	esrv_send_face (client *ns, short face_num, int nocache)
359	elmex	1.1	{
360	root	1.3	char fallback;
361	elmex	1.1
362	root	1.3	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	root	1.8	packet sl;
369	root	1.3	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	root	1.6	sl << (ns->image2 ? "face2 " : "face1 ")
380			<< uint16 (face_num);
381
382	root	1.3	if (ns->image2)
383	root	1.6	sl << uint8 (fallback);
384
385			sl << uint32 (facesets[fallback].faces[face_num].checksum)
386			<< new_faces[face_num].name;
387	root	1.3
388	root	1.11	ns->send_packet (sl);
389	root	1.3	}
390			else
391			{
392	root	1.6	sl << (ns->image2 ? "image2 " : "image ")
393			<< uint32 (face_num);
394
395	root	1.3	if (ns->image2)
396	root	1.6	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	root	1.11	ns->send_packet (sl);
402	elmex	1.1	}
403	root	1.6
404	root	1.3	ns->faces_sent[face_num] \|= NS_FACESENT_FACE;
405	elmex	1.1	}
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	root	1.3	void
414	root	1.15	send_image_info (client ns, char params)
415	elmex	1.1	{
416	root	1.8	packet sl;
417	elmex	1.1
418	root	1.6	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	root	1.15	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	elmex	1.1
426	root	1.11	ns->send_packet (sl);
427	elmex	1.1	}
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	root	1.3	void
439	root	1.15	send_image_sums (client ns, char params)
440	elmex	1.1	{
441	root	1.3	int start, stop;
442			char *cp, buf[MAX_BUF];
443
444	root	1.8	packet sl;
445	root	1.3
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	root	1.7	sl.printf ("replyinfo image_sums %d %d", start, stop);
455			ns->send_packet (sl);
456			sl.reset ();
457	root	1.3	return;
458			}
459
460	root	1.6	sl.printf ("replyinfo image_sums %d %d ", start, stop);
461	root	1.3
462	root	1.6	for (int i = start; i <= stop; i++)
463	root	1.3	{
464			ns->faces_sent[i] \|= NS_FACESENT_FACE;
465
466	root	1.6	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	root	1.3	}
473	root	1.6
474	root	1.3	/* 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	root	1.9	if (sl.length () >= MAXSOCKBUF)
480	root	1.3	{
481	root	1.9	LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
482	root	1.3	abort ();
483	elmex	1.1	}
484	root	1.6
485	root	1.11	ns->send_packet (sl);
486	elmex	1.1	}
487	root	1.6