Extract common code out into kdm_for_screen()

[dcpomatic.git] / src / lib / internet.cc

diff --git a/src/lib/internet.cc b/src/lib/internet.cc
index ad313bd3f71fb7623dcef484bc8f6d3c70b3c64f..b993117bb5e93cc3b58e77264c7dcd3ce0b14f79 100644 (file)
--- a/src/lib/internet.cc
+++ b/src/lib/internet.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2014-2015 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2014-2019 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
@@ -22,6 +22,7 @@
 #include "compose.hpp"
 #include "exceptions.h"
 #include "cross.h"
+#include "util.h"
 #include <curl/curl.h>
 #include <zip.h>
 #include <boost/function.hpp>
@@ -38,6 +39,46 @@ using boost::optional;
 using boost::function;
 using boost::algorithm::trim;
 
+static size_t
+ls_url_data (void* buffer, size_t size, size_t nmemb, void* output)
+{
+       string* s = reinterpret_cast<string*>(output);
+       char* c = reinterpret_cast<char*>(buffer);
+       for (size_t i = 0; i < (size * nmemb); ++i) {
+               *s += c[i];
+       }
+       return nmemb;
+}
+
+list<string>
+ls_url (string url)
+{
+       CURL* curl = curl_easy_init ();
+       curl_easy_setopt (curl, CURLOPT_URL, url.c_str());
+       curl_easy_setopt (curl, CURLOPT_DIRLISTONLY, 1);
+
+       string ls;
+       curl_easy_setopt (curl, CURLOPT_WRITEFUNCTION, ls_url_data);
+       curl_easy_setopt (curl, CURLOPT_WRITEDATA, &ls);
+       CURLcode const cr = curl_easy_perform (curl);
+
+       if (cr != CURLE_OK) {
+               return list<string>();
+       }
+
+       list<string> result;
+       result.push_back("");
+       for (size_t i = 0; i < ls.size(); ++i) {
+               if (ls[i] == '\n') {
+                       result.push_back("");
+               } else {
+                       result.back() += ls[i];
+               }
+       }
+
+       result.pop_back ();
+       return result;
+}
 
 static size_t
 get_from_url_data (void* buffer, size_t size, size_t nmemb, void* stream)
@@ -47,7 +88,7 @@ get_from_url_data (void* buffer, size_t size, size_t nmemb, void* stream)
 }
 
 optional<string>
-get_from_url (string url, bool pasv, ScopedTemporary& temp)
+get_from_url (string url, bool pasv, bool skip_pasv_ip, ScopedTemporary& temp)
 {
        CURL* curl = curl_easy_init ();
        curl_easy_setopt (curl, CURLOPT_URL, url.c_str());
@@ -57,6 +98,9 @@ get_from_url (string url, bool pasv, ScopedTemporary& temp)
        curl_easy_setopt (curl, CURLOPT_WRITEDATA, f);
        curl_easy_setopt (curl, CURLOPT_FTP_USE_EPSV, 0);
        curl_easy_setopt (curl, CURLOPT_FTP_USE_EPRT, 0);
+       if (skip_pasv_ip) {
+               curl_easy_setopt (curl, CURLOPT_FTP_SKIP_PASV_IP, 1);
+       }
        if (!pasv) {
                curl_easy_setopt (curl, CURLOPT_FTPPORT, "-");
        }
@@ -76,10 +120,10 @@ get_from_url (string url, bool pasv, ScopedTemporary& temp)
 }
 
 optional<string>
-get_from_url (string url, bool pasv, function<void (boost::filesystem::path)> load)
+get_from_url (string url, bool pasv, bool skip_pasv_ip, function<void (boost::filesystem::path)> load)
 {
        ScopedTemporary temp;
-       optional<string> e = get_from_url (url, pasv, temp);
+       optional<string> e = get_from_url (url, pasv, skip_pasv_ip, temp);
        if (e) {
                return e;
        }
@@ -92,11 +136,11 @@ get_from_url (string url, bool pasv, function<void (boost::filesystem::path)> lo
  *  @param load Function passed a (temporary) filesystem path of the unpacked file.
  */
 optional<string>
-get_from_zip_url (string url, string file, bool pasv, function<void (boost::filesystem::path)> load)
+get_from_zip_url (string url, string file, bool pasv, bool skip_pasv_ip, function<void (boost::filesystem::path)> load)
 {
        /* Download the ZIP file to temp_zip */
        ScopedTemporary temp_zip;
-       optional<string> e = get_from_url (url, pasv, temp_zip);
+       optional<string> e = get_from_url (url, pasv, skip_pasv_ip, temp_zip);
        if (e) {
                return e;
        }
@@ -140,7 +184,7 @@ get_from_zip_url (string url, string file, bool pasv, function<void (boost::file
        char buffer[4096];
        while (true) {
                int const N = zip_fread (file_in_zip, buffer, sizeof (buffer));
-               fwrite (buffer, 1, N, f);
+               checked_fwrite (buffer, N, f, temp_cert.file());
                if (N < int (sizeof (buffer))) {
                        break;
                }