From 35a7379dda587add9d94dc4f710414a23976d6e7 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Thu, 7 Feb 2019 23:54:07 +0000
Subject: Support download of certificates from Qube (#1460).

---
 src/lib/internet.cc | 40 ++++++++++++++++++++++++++++++++++++++++
 src/lib/internet.h  |  1 +
 2 files changed, 41 insertions(+)

(limited to 'src/lib')

diff --git a/src/lib/internet.cc b/src/lib/internet.cc
index e0af49b66..b993117bb 100644
--- a/src/lib/internet.cc
+++ b/src/lib/internet.cc
@@ -39,6 +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)
diff --git a/src/lib/internet.h b/src/lib/internet.h
index 125533b5d..5f9a25e3b 100644
--- a/src/lib/internet.h
+++ b/src/lib/internet.h
@@ -27,3 +27,4 @@ class ScopedTemporary;
 boost::optional<std::string> get_from_url (std::string url, bool pasv, bool skip_pasv_ip, ScopedTemporary& temp);
 boost::optional<std::string> get_from_url (std::string url, bool pasv, bool skip_pasv_ip, boost::function<void (boost::filesystem::path)> load);
 boost::optional<std::string> get_from_zip_url (std::string url, std::string file, bool pasv, bool skip_pasv_ip, boost::function<void (boost::filesystem::path)> load);
+std::list<std::string> ls_url (std::string url);
-- 
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