From 9026320cc48e9c200d33aae9e8f601f29542e186 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Thu, 17 Jul 2014 16:52:45 +0100
Subject: Get Signer to take a PEM string rather than a filename.

---
 src/signer.cc |  5 ++++-
 src/signer.h  |  8 ++++----
 src/util.cc   | 20 ++++++++++++++++++++
 src/util.h    |  1 +
 4 files changed, 29 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/signer.cc b/src/signer.cc
index 8f0114a2..a0d9912a 100644
--- a/src/signer.cc
+++ b/src/signer.cc
@@ -114,7 +114,10 @@ Signer::add_signature_value (xmlpp::Node* parent, string ns) const
 		throw MiscError ("could not create signature context");
 	}
 
-	signature_context->signKey = xmlSecCryptoAppKeyLoad (_key.string().c_str(), xmlSecKeyDataFormatPem, 0, 0, 0);
+	signature_context->signKey = xmlSecCryptoAppKeyLoadMemory (
+		reinterpret_cast<const unsigned char *> (_key.c_str()), _key.size(), xmlSecKeyDataFormatPem, 0, 0, 0
+		);
+	
 	if (signature_context->signKey == 0) {
 		throw FileError ("could not load private key file", _key, 0);
 	}
diff --git a/src/signer.h b/src/signer.h
index 6e258f8d..92745ff2 100644
--- a/src/signer.h
+++ b/src/signer.h
@@ -42,9 +42,9 @@ class Signer : public boost::noncopyable
 {
 public:
 	/** @param c Certificate chain to sign with.
-	 *  @param k Key to sign with.
+	 *  @param k Key to sign with as a PEM-format string.
 	 */
-	Signer (CertificateChain c, boost::filesystem::path k)
+	Signer (CertificateChain c, std::string k)
 		: _certificates (c)
 		, _key (k)
 	{}
@@ -60,8 +60,8 @@ private:
 
 	/** Certificate chain to sign with */
 	CertificateChain _certificates;
-	/** Filename of signer key */
-	boost::filesystem::path _key;
+	/** Key to sign with as a PEM-format string */
+	std::string _key;
 };
 
 }
diff --git a/src/util.cc b/src/util.cc
index 3d37454f..9758db9c 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -368,3 +368,23 @@ dcp::ids_equal (string a, string b)
 	trim (b);
 	return a == b;
 }
+
+string
+dcp::file_to_string (boost::filesystem::path p)
+{
+	uintmax_t len = boost::filesystem::file_size (p);
+	char* c = new char[len];
+			   
+	FILE* f = fopen_boost (p, "r");
+	if (!f) {
+		return "";
+	}
+
+	fread (c, 1, len, f);
+	fclose (f);
+
+	string s (c);
+	delete[] c;
+
+	return s;
+}
diff --git a/src/util.h b/src/util.h
index d3f212c7..33fd79a3 100644
--- a/src/util.h
+++ b/src/util.h
@@ -88,6 +88,7 @@ extern void add_signer (xmlpp::Element* parent, CertificateChain const & certifi
 extern int base64_decode (std::string const & in, unsigned char* out, int out_length);
 extern boost::optional<boost::filesystem::path> relative_to_root (boost::filesystem::path root, boost::filesystem::path file);
 extern FILE * fopen_boost (boost::filesystem::path, std::string);
+extern std::string file_to_string (boost::filesystem::path);
 
 template <class F, class T>
 std::list<boost::shared_ptr<T> >
-- 
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