Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/lib/psl.c @ 7:5ab937c03c27

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Apply full RELRO to all generated binaries. Also strip the generated binaries.
author Franz Glasner <fzglas.hg@dom66.de>
date Tue, 16 Sep 2025 12:37:32 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /***************************************************************************
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2 * _ _ ____ _
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3 * Project ___| | | | _ \| |
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4 * / __| | | | |_) | |
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5 * | (__| |_| | _ <| |___
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6 * \___|\___/|_| \_\_____|
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7 *
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8 * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 *
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10 * This software is licensed as described in the file COPYING, which
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11 * you should have received as part of this distribution. The terms
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12 * are also available at https://curl.haxx.se/docs/copyright.html.
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13 *
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14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 * copies of the Software, and permit persons to whom the Software is
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16 * furnished to do so, under the terms of the COPYING file.
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17 *
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18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 * KIND, either express or implied.
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20 *
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21 ***************************************************************************/
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23 #include "curl_setup.h"
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25 #include <curl/curl.h>
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27 #ifdef USE_LIBPSL
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29 #include "psl.h"
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30 #include "share.h"
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32 /* The last 3 #include files should be in this order */
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33 #include "curl_printf.h"
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34 #include "curl_memory.h"
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35 #include "memdebug.h"
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37 void Curl_psl_destroy(struct PslCache *pslcache)
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38 {
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39 if(pslcache->psl) {
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40 if(pslcache->dynamic)
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41 psl_free((psl_ctx_t *) pslcache->psl);
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42 pslcache->psl = NULL;
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43 pslcache->dynamic = FALSE;
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44 }
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45 }
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47 static time_t now_seconds(void)
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48 {
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49 struct curltime now = Curl_now();
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51 return now.tv_sec;
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52 }
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54 const psl_ctx_t *Curl_psl_use(struct Curl_easy *easy)
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55 {
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56 struct PslCache *pslcache = easy->psl;
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57 const psl_ctx_t *psl;
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58 time_t now;
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60 if(!pslcache)
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61 return NULL;
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62
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63 Curl_share_lock(easy, CURL_LOCK_DATA_PSL, CURL_LOCK_ACCESS_SHARED);
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64 now = now_seconds();
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65 if(!pslcache->psl || pslcache->expires <= now) {
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66 /* Let a chance to other threads to do the job: avoids deadlock. */
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67 Curl_share_unlock(easy, CURL_LOCK_DATA_PSL);
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68
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69 /* Update cache: this needs an exclusive lock. */
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70 Curl_share_lock(easy, CURL_LOCK_DATA_PSL, CURL_LOCK_ACCESS_SINGLE);
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72 /* Recheck in case another thread did the job. */
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73 now = now_seconds();
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74 if(!pslcache->psl || pslcache->expires <= now) {
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75 bool dynamic = FALSE;
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76 time_t expires = TIME_T_MAX;
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78 #if defined(PSL_VERSION_NUMBER) && PSL_VERSION_NUMBER >= 0x001000
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79 psl = psl_latest(NULL);
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80 dynamic = psl != NULL;
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81 /* Take care of possible time computation overflow. */
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82 expires = now < TIME_T_MAX - PSL_TTL? now + PSL_TTL: TIME_T_MAX;
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83
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84 /* Only get the built-in PSL if we do not already have the "latest". */
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85 if(!psl && !pslcache->dynamic)
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86 #endif
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88 psl = psl_builtin();
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90 if(psl) {
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91 Curl_psl_destroy(pslcache);
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92 pslcache->psl = psl;
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93 pslcache->dynamic = dynamic;
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94 pslcache->expires = expires;
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95 }
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96 }
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97 Curl_share_unlock(easy, CURL_LOCK_DATA_PSL); /* Release exclusive lock. */
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98 Curl_share_lock(easy, CURL_LOCK_DATA_PSL, CURL_LOCK_ACCESS_SHARED);
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99 }
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100 psl = pslcache->psl;
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101 if(!psl)
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102 Curl_share_unlock(easy, CURL_LOCK_DATA_PSL);
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103 return psl;
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104 }
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105
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106 void Curl_psl_release(struct Curl_easy *easy)
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107 {
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108 Curl_share_unlock(easy, CURL_LOCK_DATA_PSL);
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109 }
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110
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111 #endif /* USE_LIBPSL */