Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/curl/lib/gopher.c @ 46:7ee69f120f19 default tip

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>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2
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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 - 2019, 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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22
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23 #include "curl_setup.h"
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25 #ifndef CURL_DISABLE_GOPHER
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27 #include "urldata.h"
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28 #include <curl/curl.h>
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29 #include "transfer.h"
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30 #include "sendf.h"
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31 #include "progress.h"
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32 #include "gopher.h"
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33 #include "select.h"
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34 #include "strdup.h"
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35 #include "url.h"
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36 #include "escape.h"
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37 #include "warnless.h"
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38 #include "curl_printf.h"
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39 #include "curl_memory.h"
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40 /* The last #include file should be: */
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41 #include "memdebug.h"
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42
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43 /*
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44 * Forward declarations.
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45 */
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46
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47 static CURLcode gopher_do(struct connectdata *conn, bool *done);
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48
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49 /*
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50 * Gopher protocol handler.
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51 * This is also a nice simple template to build off for simple
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52 * connect-command-download protocols.
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53 */
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54
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55 const struct Curl_handler Curl_handler_gopher = {
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56 "GOPHER", /* scheme */
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57 ZERO_NULL, /* setup_connection */
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58 gopher_do, /* do_it */
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59 ZERO_NULL, /* done */
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60 ZERO_NULL, /* do_more */
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61 ZERO_NULL, /* connect_it */
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62 ZERO_NULL, /* connecting */
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63 ZERO_NULL, /* doing */
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64 ZERO_NULL, /* proto_getsock */
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65 ZERO_NULL, /* doing_getsock */
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66 ZERO_NULL, /* domore_getsock */
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67 ZERO_NULL, /* perform_getsock */
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68 ZERO_NULL, /* disconnect */
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69 ZERO_NULL, /* readwrite */
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70 ZERO_NULL, /* connection_check */
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71 PORT_GOPHER, /* defport */
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72 CURLPROTO_GOPHER, /* protocol */
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73 PROTOPT_NONE /* flags */
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74 };
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75
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76 static CURLcode gopher_do(struct connectdata *conn, bool *done)
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77 {
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78 CURLcode result = CURLE_OK;
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79 struct Curl_easy *data = conn->data;
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80 curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
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81 char *gopherpath;
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82 char *path = data->state.up.path;
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83 char *query = data->state.up.query;
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84 char *sel = NULL;
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85 char *sel_org = NULL;
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86 ssize_t amount, k;
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87 size_t len;
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88
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89 *done = TRUE; /* unconditionally */
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90
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91 /* path is guaranteed non-NULL */
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92 DEBUGASSERT(path);
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93
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94 if(query)
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95 gopherpath = aprintf("%s?%s", path, query);
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96 else
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97 gopherpath = strdup(path);
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98
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99 if(!gopherpath)
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100 return CURLE_OUT_OF_MEMORY;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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101
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parents:
diff changeset
102 /* Create selector. Degenerate cases: / and /1 => convert to "" */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
103 if(strlen(gopherpath) <= 2) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
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104 sel = (char *)"";
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parents:
diff changeset
105 len = strlen(sel);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
106 free(gopherpath);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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107 }
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parents:
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108 else {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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109 char *newp;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
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110
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
111 /* Otherwise, drop / and the first character (i.e., item type) ... */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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112 newp = gopherpath;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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113 newp += 2;
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parents:
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114
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parents:
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115 /* ... and finally unescape */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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116 result = Curl_urldecode(data, newp, 0, &sel, &len, FALSE);
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parents:
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117 free(gopherpath);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
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118 if(result)
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parents:
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119 return result;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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120 sel_org = sel;
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parents:
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121 }
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parents:
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122
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parents:
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123 /* We use Curl_write instead of Curl_sendf to make sure the entire buffer is
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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124 sent, which could be sizeable with long selectors. */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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125 k = curlx_uztosz(len);
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parents:
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126
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parents:
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127 for(;;) {
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parents:
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128 result = Curl_write(conn, sockfd, sel, k, &amount);
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parents:
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129 if(!result) { /* Which may not have written it all! */
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parents:
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130 result = Curl_client_write(conn, CLIENTWRITE_HEADER, sel, amount);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
131 if(result)
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parents:
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132 break;
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parents:
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133
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
134 k -= amount;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
135 sel += amount;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
136 if(k < 1)
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
137 break; /* but it did write it all */
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parents:
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138 }
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parents:
diff changeset
139 else
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parents:
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140 break;
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parents:
diff changeset
141
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parents:
diff changeset
142 /* Don't busyloop. The entire loop thing is a work-around as it causes a
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
143 BLOCKING behavior which is a NO-NO. This function should rather be
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
144 split up in a do and a doing piece where the pieces that aren't
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
145 possible to send now will be sent in the doing function repeatedly
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
146 until the entire request is sent.
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parents:
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147
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
148 Wait a while for the socket to be writable. Note that this doesn't
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
149 acknowledge the timeout.
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
150 */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
151 if(SOCKET_WRITABLE(sockfd, 100) < 0) {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
152 result = CURLE_SEND_ERROR;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
153 break;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
154 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
155 }
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
156
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
157 free(sel_org);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
158
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
159 if(!result)
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
160 /* We can use Curl_sendf to send the terminal \r\n relatively safely and
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
161 save allocing another string/doing another _write loop. */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
162 result = Curl_sendf(sockfd, conn, "\r\n");
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
163 if(result) {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
164 failf(data, "Failed sending Gopher request");
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
165 return result;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
166 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
167 result = Curl_client_write(conn, CLIENTWRITE_HEADER, (char *)"\r\n", 2);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
168 if(result)
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
169 return result;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
170
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
171 Curl_setup_transfer(data, FIRSTSOCKET, -1, FALSE, -1);
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
172 return CURLE_OK;
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
173 }
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
174 #endif /*CURL_DISABLE_GOPHER*/