Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/lib/pingpong.h @ 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
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1 #ifndef HEADER_CURL_PINGPONG_H
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2 #define HEADER_CURL_PINGPONG_H
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3 /***************************************************************************
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4 * _ _ ____ _
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5 * Project ___| | | | _ \| |
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6 * / __| | | | |_) | |
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7 * | (__| |_| | _ <| |___
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8 * \___|\___/|_| \_\_____|
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9 *
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10 * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
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11 *
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12 * This software is licensed as described in the file COPYING, which
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13 * you should have received as part of this distribution. The terms
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14 * are also available at https://curl.haxx.se/docs/copyright.html.
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15 *
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16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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17 * copies of the Software, and permit persons to whom the Software is
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18 * furnished to do so, under the terms of the COPYING file.
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19 *
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20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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21 * KIND, either express or implied.
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22 *
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23 ***************************************************************************/
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25 #include "curl_setup.h"
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27 #if !defined(CURL_DISABLE_IMAP) || !defined(CURL_DISABLE_FTP) || \
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28 !defined(CURL_DISABLE_POP3) || !defined(CURL_DISABLE_SMTP)
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29 #define USE_PINGPONG
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30 #endif
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32 /* forward-declaration, this is defined in urldata.h */
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33 struct connectdata;
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35 typedef enum {
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36 FTPTRANSFER_BODY, /* yes do transfer a body */
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37 FTPTRANSFER_INFO, /* do still go through to get info/headers */
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38 FTPTRANSFER_NONE, /* don't get anything and don't get info */
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39 FTPTRANSFER_LAST /* end of list marker, never used */
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40 } curl_pp_transfer;
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42 /*
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43 * 'pingpong' is the generic struct used for protocols doing server<->client
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44 * conversations in a back-and-forth style such as FTP, IMAP, POP3, SMTP etc.
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45 *
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46 * It holds response cache and non-blocking sending data.
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47 */
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48 struct pingpong {
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49 char *cache; /* data cache between getresponse()-calls */
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50 size_t cache_size; /* size of cache in bytes */
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51 size_t nread_resp; /* number of bytes currently read of a server response */
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52 char *linestart_resp; /* line start pointer for the server response
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53 reader function */
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54 bool pending_resp; /* set TRUE when a server response is pending or in
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55 progress, and is cleared once the last response is
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56 read */
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57 char *sendthis; /* allocated pointer to a buffer that is to be sent to the
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58 server */
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59 size_t sendleft; /* number of bytes left to send from the sendthis buffer */
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60 size_t sendsize; /* total size of the sendthis buffer */
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61 struct curltime response; /* set to Curl_now() when a command has been sent
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62 off, used to time-out response reading */
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63 long response_time; /* When no timeout is given, this is the amount of
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64 milliseconds we await for a server response. */
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66 struct connectdata *conn; /* points to the connectdata struct that this
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67 belongs to */
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69 /* Function pointers the protocols MUST implement and provide for the
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70 pingpong layer to function */
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72 CURLcode (*statemach_act)(struct connectdata *conn);
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74 bool (*endofresp)(struct connectdata *conn, char *ptr, size_t len,
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75 int *code);
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76 };
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78 /*
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79 * Curl_pp_statemach()
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80 *
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81 * called repeatedly until done. Set 'wait' to make it wait a while on the
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82 * socket if there's no traffic.
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83 */
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84 CURLcode Curl_pp_statemach(struct pingpong *pp, bool block,
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85 bool disconnecting);
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87 /* initialize stuff to prepare for reading a fresh new response */
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88 void Curl_pp_init(struct pingpong *pp);
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90 /* Returns timeout in ms. 0 or negative number means the timeout has already
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91 triggered */
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92 time_t Curl_pp_state_timeout(struct pingpong *pp, bool disconnecting);
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95 /***********************************************************************
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96 *
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97 * Curl_pp_sendf()
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98 *
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99 * Send the formatted string as a command to a pingpong server. Note that
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100 * the string should not have any CRLF appended, as this function will
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101 * append the necessary things itself.
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102 *
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103 * made to never block
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104 */
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105 CURLcode Curl_pp_sendf(struct pingpong *pp,
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106 const char *fmt, ...);
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107
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108 /***********************************************************************
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109 *
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110 * Curl_pp_vsendf()
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111 *
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112 * Send the formatted string as a command to a pingpong server. Note that
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113 * the string should not have any CRLF appended, as this function will
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114 * append the necessary things itself.
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115 *
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116 * made to never block
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117 */
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118 CURLcode Curl_pp_vsendf(struct pingpong *pp,
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119 const char *fmt,
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120 va_list args);
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121
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122 /*
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123 * Curl_pp_readresp()
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124 *
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125 * Reads a piece of a server response.
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126 */
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127 CURLcode Curl_pp_readresp(curl_socket_t sockfd,
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128 struct pingpong *pp,
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129 int *code, /* return the server code if done */
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130 size_t *size); /* size of the response */
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131
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132
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133 CURLcode Curl_pp_flushsend(struct pingpong *pp);
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134
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135 /* call this when a pingpong connection is disconnected */
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136 CURLcode Curl_pp_disconnect(struct pingpong *pp);
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137
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138 int Curl_pp_getsock(struct pingpong *pp, curl_socket_t *socks);
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139
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140
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141 /***********************************************************************
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142 *
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143 * Curl_pp_moredata()
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144 *
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145 * Returns whether there are still more data in the cache and so a call
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146 * to Curl_pp_readresp() will not block.
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147 */
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148 bool Curl_pp_moredata(struct pingpong *pp);
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149
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150 #endif /* HEADER_CURL_PINGPONG_H */