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"
24 #include <locked_sstream.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, cr);
80 /* Open the ZIP file and read `file' out of it */
82 struct zip* zip = zip_open (temp_zip.c_str(), 0, 0);
84 return optional<string> (_("Could not open downloaded ZIP file"));
87 struct zip_file* zip_file = zip_fopen (zip, file.c_str(), 0);
89 return optional<string> (_("Unexpected ZIP file contents"));
92 ScopedTemporary temp_cert;
93 f = temp_cert.open ("wb");
96 int const N = zip_fread (zip_file, buffer, sizeof (buffer));
97 fwrite (buffer, 1, N, f);
98 if (N < int (sizeof (buffer))) {
104 load (temp_cert.file ());
105 return optional<string> ();
109 ftp_ls_data (void* buffer, size_t size, size_t nmemb, void* data)
111 string* s = reinterpret_cast<string *> (data);
112 uint8_t* b = reinterpret_cast<uint8_t *> (buffer);
113 for (size_t i = 0; i < (size * nmemb); ++i) {
120 ftp_ls (string url, bool pasv)
122 CURL* curl = curl_easy_init ();
124 throw NetworkError ("could not set up curl");
127 if (url.substr (url.length() - 1, 1) != "/") {
130 curl_easy_setopt (curl, CURLOPT_URL, url.c_str ());
132 curl_easy_setopt (curl, CURLOPT_TIMEOUT, 20);
135 struct curl_slist* commands = 0;
136 commands = curl_slist_append (commands, "NLST");
137 curl_easy_setopt (curl, CURLOPT_POSTQUOTE, commands);
138 curl_easy_setopt (curl, CURLOPT_WRITEDATA, &ls_raw);
139 curl_easy_setopt (curl, CURLOPT_WRITEFUNCTION, ftp_ls_data);
140 curl_easy_setopt (curl, CURLOPT_FTP_USE_EPSV, 0);
141 curl_easy_setopt (curl, CURLOPT_FTP_USE_EPRT, 0);
142 curl_easy_setopt (curl, CURLOPT_VERBOSE, 1);
144 curl_easy_setopt (curl, CURLOPT_FTPPORT, "-");
146 CURLcode const r = curl_easy_perform (curl);
148 curl_easy_cleanup (curl);
149 throw NetworkError (curl_easy_strerror (r));
152 locked_stringstream s (ls_raw);
155 string line = s.getline ();
157 if (line.length() > 55) {
158 string const file = line.substr (55);
159 if (file != "." && file != "..") {
165 curl_easy_cleanup (curl);