2 Copyright (C) 2014-2015 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
21 #include "scoped_temporary.h"
22 #include "compose.hpp"
23 #include "exceptions.h"
25 #include <curl/curl.h>
27 #include <boost/function.hpp>
28 #include <boost/optional.hpp>
29 #include <boost/filesystem.hpp>
30 #include <boost/algorithm/string.hpp>
37 using boost::optional;
38 using boost::function;
39 using boost::algorithm::trim;
42 get_from_zip_url_data (void* buffer, size_t size, size_t nmemb, void* stream)
44 FILE* f = reinterpret_cast<FILE*> (stream);
45 return fwrite (buffer, size, nmemb, f);
48 /** @param url URL of ZIP file.
49 * @param file Filename within ZIP file.
50 * @param load Function passed a (temporary) filesystem path of the unpacked file.
53 get_from_zip_url (string url, string file, bool pasv, function<void (boost::filesystem::path)> load)
55 /* Download the ZIP file to temp_zip */
56 CURL* curl = curl_easy_init ();
57 curl_easy_setopt (curl, CURLOPT_URL, url.c_str ());
59 ScopedTemporary temp_zip;
60 FILE* f = temp_zip.open ("wb");
61 curl_easy_setopt (curl, CURLOPT_WRITEFUNCTION, get_from_zip_url_data);
62 curl_easy_setopt (curl, CURLOPT_WRITEDATA, f);
63 curl_easy_setopt (curl, CURLOPT_FTP_USE_EPSV, 0);
64 curl_easy_setopt (curl, CURLOPT_FTP_USE_EPRT, 0);
66 curl_easy_setopt (curl, CURLOPT_FTPPORT, "-");
69 /* Maximum time is 20s */
70 curl_easy_setopt (curl, CURLOPT_TIMEOUT, 20);
72 CURLcode const cr = curl_easy_perform (curl);
75 curl_easy_cleanup (curl);
77 return String::compose (_("Download failed (%1/%2 error %3)"), url, file, (int) cr);
80 /* Open the ZIP file and read `file' out of it */
82 FILE* zip_file = fopen_boost (temp_zip.file (), "rb");
84 return optional<string> (_("Could not open downloaded ZIP file"));
87 zip_source_t* zip_source = zip_source_filep_create (zip_file, 0, -1, 0);
89 return optional<string> (_("Could not open downloaded ZIP file"));
92 zip_t* zip = zip_open_from_source (zip_source, 0, 0);
94 return optional<string> (_("Could not open downloaded ZIP file"));
97 struct zip_file* file_in_zip = zip_fopen (zip, file.c_str(), 0);
99 return optional<string> (_("Unexpected ZIP file contents"));
102 ScopedTemporary temp_cert;
103 f = temp_cert.open ("wb");
106 int const N = zip_fread (file_in_zip, buffer, sizeof (buffer));
107 fwrite (buffer, 1, N, f);
108 if (N < int (sizeof (buffer))) {
112 zip_fclose (file_in_zip);
116 load (temp_cert.file ());
117 return optional<string> ();
121 ftp_ls_data (void* buffer, size_t size, size_t nmemb, void* data)
123 string* s = reinterpret_cast<string *> (data);
124 uint8_t* b = reinterpret_cast<uint8_t *> (buffer);
125 for (size_t i = 0; i < (size * nmemb); ++i) {
132 ftp_ls (string url, bool pasv)
134 CURL* curl = curl_easy_init ();
136 throw NetworkError ("could not set up curl");
139 if (url.substr (url.length() - 1, 1) != "/") {
142 curl_easy_setopt (curl, CURLOPT_URL, url.c_str ());
144 curl_easy_setopt (curl, CURLOPT_TIMEOUT, 20);
147 struct curl_slist* commands = 0;
148 commands = curl_slist_append (commands, "NLST");
149 curl_easy_setopt (curl, CURLOPT_POSTQUOTE, commands);
150 curl_easy_setopt (curl, CURLOPT_WRITEDATA, &ls_raw);
151 curl_easy_setopt (curl, CURLOPT_WRITEFUNCTION, ftp_ls_data);
152 curl_easy_setopt (curl, CURLOPT_FTP_USE_EPSV, 0);
153 curl_easy_setopt (curl, CURLOPT_FTP_USE_EPRT, 0);
154 curl_easy_setopt (curl, CURLOPT_VERBOSE, 1);
156 curl_easy_setopt (curl, CURLOPT_FTPPORT, "-");
158 CURLcode const r = curl_easy_perform (curl);
160 curl_easy_cleanup (curl);
161 throw NetworkError (curl_easy_strerror (r));
166 for (size_t i = 0; i < ls_raw.length(); ++i) {
168 if (ls_raw[i] == '\n') {
170 if (line.length() > 55) {
171 string const file = line.substr (55);
172 if (file != "." && file != "..") {
180 curl_easy_cleanup (curl);