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annotate include/freeDiameter/extension.h @ 732:4a0b61061a6d

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Added simple mechanism to declare dependencies between extensions
author Sebastien Decugis <sdecugis@nict.go.jp>
date Fri, 25 Feb 2011 15:46:40 +0900
parents f198d16fa7f4
children 4a9f08d6b6ba
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1 /*********************************************************************************************************
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2 * Software License Agreement (BSD License) *
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3 * Author: Sebastien Decugis <sdecugis@nict.go.jp> *
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4 * *
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5 * Copyright (c) 2011, WIDE Project and NICT *
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6 * All rights reserved. *
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7 * *
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8 * Redistribution and use of this software in source and binary forms, with or without modification, are *
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9 * permitted provided that the following conditions are met: *
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10 * *
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11 * * Redistributions of source code must retain the above *
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12 * copyright notice, this list of conditions and the *
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13 * following disclaimer. *
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14 * *
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15 * * Redistributions in binary form must reproduce the above *
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16 * copyright notice, this list of conditions and the *
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17 * following disclaimer in the documentation and/or other *
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18 * materials provided with the distribution. *
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19 * *
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20 * * Neither the name of the WIDE Project or NICT nor the *
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21 * names of its contributors may be used to endorse or *
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22 * promote products derived from this software without *
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23 * specific prior written permission of WIDE Project and *
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24 * NICT. *
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25 * *
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26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
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27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
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28 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
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29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *
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30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS *
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31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
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32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF *
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33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
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34 *********************************************************************************************************/
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35
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36 #ifndef _EXTENSION_H
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37 #define _EXTENSION_H
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38
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39 /* Include definition of freeDiameter API */
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40 #include <freeDiameter/freeDiameter-host.h>
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41 #include <freeDiameter/libfdcore.h>
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42
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43 /* Macro that define the entry point of the extension */
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44 #define EXTENSION_ENTRY(_name, _function, _depends...) \
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45 const char *fd_ext_depends[] = { _name , ## _depends , NULL }; \
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46 static int extension_loaded = 0; \
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47 int fd_ext_init(int major, int minor, char * conffile) { \
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48 if ((major != FD_PROJECT_VERSION_MAJOR) \
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49 || (minor != FD_PROJECT_VERSION_MINOR)) { \
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50 fprintf(stderr, "This extension (" _name ") was compiled for a different version of freeDiameter.\n"); \
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51 TRACE_DEBUG(INFO, "daemon %d.%d != ext %d.%d", \
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52 major, minor, \
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53 FD_PROJECT_VERSION_MAJOR, FD_PROJECT_VERSION_MINOR); \
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54 return EINVAL; \
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55 } \
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56 if (extension_loaded) { \
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57 fprintf(stderr, "Extension (" _name ") cannot be loaded twice!\n"); \
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58 return ENOTSUP; \
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59 } \
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60 extension_loaded++; \
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61 return (_function)(conffile); \
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62 }
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63
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64 #endif /* _EXTENSION_H */
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