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annotate src/os/unix/ngx_dlopen.h @ 7851:aa5f8825f24d

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Resolver: fixed label types handling in ngx_resolver_copy(). Previously, anything with any of the two high bits set were interpreted as compression pointers. This is incorrect, as RFC 1035 clearly states that "The 10 and 01 combinations are reserved for future use". Further, the 01 combination is actually allocated for EDNS extended label type (see RFC 2671 and RFC 6891), not really used though. Fix is to reject unrecognized label types rather than misinterpreting them as compression pointers.
author Maxim Dounin <mdounin@mdounin.ru>
date Tue, 25 May 2021 15:17:41 +0300
parents 7142b04337d6
children
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7142b04337d6 Dynamic modules: dlopen() support.
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2 /*
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3 * Copyright (C) Maxim Dounin
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #ifndef _NGX_DLOPEN_H_INCLUDED_
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9 #define _NGX_DLOPEN_H_INCLUDED_
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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16 #define ngx_dlopen(path) dlopen((char *) path, RTLD_NOW | RTLD_GLOBAL)
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17 #define ngx_dlopen_n "dlopen()"
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19 #define ngx_dlsym(handle, symbol) dlsym(handle, symbol)
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20 #define ngx_dlsym_n "dlsym()"
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21
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22 #define ngx_dlclose(handle) dlclose(handle)
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23 #define ngx_dlclose_n "dlclose()"
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26 #if (NGX_HAVE_DLOPEN)
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27 char *ngx_dlerror(void);
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28 #endif
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31 #endif /* _NGX_DLOPEN_H_INCLUDED_ */