[evolution-data-server] CamelSMIMEContext: Support IANA registered hash function names.

[Matthew Barnes <mbarnes src gnome org>]

commit 0aa03bf56c924c25a13d5394bda3273f17aeaa8f
Author: Matthew Barnes <mbarnes redhat com>
Date:   Fri Feb 22 17:59:34 2013 -0500

    CamelSMIMEContext: Support IANA registered hash function names.
    
    Use and recognize standard-compliant hash function names in the
    hash_to_id() and id_to_hash() methods.

 camel/camel-smime-context.c |   22 ++++++++++++++++++----
 1 files changed, 18 insertions(+), 4 deletions(-)
---
diff --git a/camel/camel-smime-context.c b/camel/camel-smime-context.c
index 467f77d..7701b5c 100644
--- a/camel/camel-smime-context.c
+++ b/camel/camel-smime-context.c
@@ -711,17 +711,19 @@ smime_context_hash_to_id (CamelCipherContext *context,
                           CamelCipherHash hash)
 {
        switch (hash) {
+               /* Support registered IANA hash function textual names.
+                * http://www.iana.org/assignments/hash-function-text-names */
                case CAMEL_CIPHER_HASH_MD5:
                        return "md5";
                case CAMEL_CIPHER_HASH_SHA1:
                case CAMEL_CIPHER_HASH_DEFAULT:
-                       return "sha1";
+                       return "sha-1";
                case CAMEL_CIPHER_HASH_SHA256:
-                       return "sha256";
+                       return "sha-256";
                case CAMEL_CIPHER_HASH_SHA384:
-                       return "sha384";
+                       return "sha-384";
                case CAMEL_CIPHER_HASH_SHA512:
-                       return "sha512";
+                       return "sha-512";
                default:
                        return NULL;
        }
@@ -732,8 +734,20 @@ smime_context_id_to_hash (CamelCipherContext *context,
                           const gchar *id)
 {
        if (id != NULL) {
+               /* Support registered IANA hash function textual names.
+                * http://www.iana.org/assignments/hash-function-text-names */
                if (g_str_equal (id, "md5"))
                        return CAMEL_CIPHER_HASH_MD5;
+               if (g_str_equal (id, "sha-1"))
+                       return CAMEL_CIPHER_HASH_SHA1;
+               if (g_str_equal (id, "sha-256"))
+                       return CAMEL_CIPHER_HASH_SHA256;
+               if (g_str_equal (id, "sha-384"))
+                       return CAMEL_CIPHER_HASH_SHA384;
+               if (g_str_equal (id, "sha-512"))
+                       return CAMEL_CIPHER_HASH_SHA512;
+
+               /* Non-standard names. */
                if (g_str_equal (id, "sha1"))
                        return CAMEL_CIPHER_HASH_SHA1;
                if (g_str_equal (id, "sha256"))