Mercurial > hgrepos > Python2 > PyMuPDF

comparison mupdf-source/thirdparty/curl/lib/gopher.c @ 2:b50eed0cc0ef upstream

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
parents
children
comparison
equal deleted inserted replaced
1:1d09e1dec1d9 2:b50eed0cc0ef
1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.haxx.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22
23 #include "curl_setup.h"
24
25 #ifndef CURL_DISABLE_GOPHER
26
27 #include "urldata.h"
28 #include <curl/curl.h>
29 #include "transfer.h"
30 #include "sendf.h"
31 #include "progress.h"
32 #include "gopher.h"
33 #include "select.h"
34 #include "strdup.h"
35 #include "url.h"
36 #include "escape.h"
37 #include "warnless.h"
38 #include "curl_printf.h"
39 #include "curl_memory.h"
40 /* The last #include file should be: */
41 #include "memdebug.h"
42
43 /*
44 * Forward declarations.
45 */
46
47 static CURLcode gopher_do(struct connectdata *conn, bool *done);
48
49 /*
50 * Gopher protocol handler.
51 * This is also a nice simple template to build off for simple
52 * connect-command-download protocols.
53 */
54
55 const struct Curl_handler Curl_handler_gopher = {
56 "GOPHER", /* scheme */
57 ZERO_NULL, /* setup_connection */
58 gopher_do, /* do_it */
59 ZERO_NULL, /* done */
60 ZERO_NULL, /* do_more */
61 ZERO_NULL, /* connect_it */
62 ZERO_NULL, /* connecting */
63 ZERO_NULL, /* doing */
64 ZERO_NULL, /* proto_getsock */
65 ZERO_NULL, /* doing_getsock */
66 ZERO_NULL, /* domore_getsock */
67 ZERO_NULL, /* perform_getsock */
68 ZERO_NULL, /* disconnect */
69 ZERO_NULL, /* readwrite */
70 ZERO_NULL, /* connection_check */
71 PORT_GOPHER, /* defport */
72 CURLPROTO_GOPHER, /* protocol */
73 PROTOPT_NONE /* flags */
74 };
75
76 static CURLcode gopher_do(struct connectdata *conn, bool *done)
77 {
78 CURLcode result = CURLE_OK;
79 struct Curl_easy *data = conn->data;
80 curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
81 char *gopherpath;
82 char *path = data->state.up.path;
83 char *query = data->state.up.query;
84 char *sel = NULL;
85 char *sel_org = NULL;
86 ssize_t amount, k;
87 size_t len;
88
89 *done = TRUE; /* unconditionally */
90
91 /* path is guaranteed non-NULL */
92 DEBUGASSERT(path);
93
94 if(query)
95 gopherpath = aprintf("%s?%s", path, query);
96 else
97 gopherpath = strdup(path);
98
99 if(!gopherpath)
100 return CURLE_OUT_OF_MEMORY;
101
102 /* Create selector. Degenerate cases: / and /1 => convert to "" */
103 if(strlen(gopherpath) <= 2) {
104 sel = (char *)"";
105 len = strlen(sel);
106 free(gopherpath);
107 }
108 else {
109 char *newp;
110
111 /* Otherwise, drop / and the first character (i.e., item type) ... */
112 newp = gopherpath;
113 newp += 2;
114
115 /* ... and finally unescape */
116 result = Curl_urldecode(data, newp, 0, &sel, &len, FALSE);
117 free(gopherpath);
118 if(result)
119 return result;
120 sel_org = sel;
121 }
122
123 /* We use Curl_write instead of Curl_sendf to make sure the entire buffer is
124 sent, which could be sizeable with long selectors. */
125 k = curlx_uztosz(len);
126
127 for(;;) {
128 result = Curl_write(conn, sockfd, sel, k, &amount);
129 if(!result) { /* Which may not have written it all! */
130 result = Curl_client_write(conn, CLIENTWRITE_HEADER, sel, amount);
131 if(result)
132 break;
133
134 k -= amount;
135 sel += amount;
136 if(k < 1)
137 break; /* but it did write it all */
138 }
139 else
140 break;
141
142 /* Don't busyloop. The entire loop thing is a work-around as it causes a
143 BLOCKING behavior which is a NO-NO. This function should rather be
144 split up in a do and a doing piece where the pieces that aren't
145 possible to send now will be sent in the doing function repeatedly
146 until the entire request is sent.
147
148 Wait a while for the socket to be writable. Note that this doesn't
149 acknowledge the timeout.
150 */
151 if(SOCKET_WRITABLE(sockfd, 100) < 0) {
152 result = CURLE_SEND_ERROR;
153 break;
154 }
155 }
156
157 free(sel_org);
158
159 if(!result)
160 /* We can use Curl_sendf to send the terminal \r\n relatively safely and
161 save allocing another string/doing another _write loop. */
162 result = Curl_sendf(sockfd, conn, "\r\n");
163 if(result) {
164 failf(data, "Failed sending Gopher request");
165 return result;
166 }
167 result = Curl_client_write(conn, CLIENTWRITE_HEADER, (char *)"\r\n", 2);
168 if(result)
169 return result;
170
171 Curl_setup_transfer(data, FIRSTSOCKET, -1, FALSE, -1);
172 return CURLE_OK;
173 }
174 #endif /*CURL_DISABLE_GOPHER*/