Extract private key from config database

It's in PKCS7 format, with newlines replaced by underscores.

diff --git a/citadel/server/modules/smtp/serv_smtpclient.c b/citadel/server/modules/smtp/serv_smtpclient.c
index 52d7e4a947fa57d18ffe14c20d3558d93a736b29..556eea687ea569b78a47b31a11c6ecc04de000ea 100644 (file)
--- a/citadel/server/modules/smtp/serv_smtpclient.c
+++ b/citadel/server/modules/smtp/serv_smtpclient.c
@@ -233,38 +233,21 @@ int smtp_attempt_delivery(long msgid, char *recp, char *envelope_from, char *sou
        s.TheMessage = CC->redirect_buffer;
        CC->redirect_buffer = NULL;
 
-       // FIXME genericize this
-       char *pkey_in =
-               "-----BEGIN PRIVATE KEY-----\n"
-               "MIIEvAIBADANBgkqhkiG9w0BAQEFAASCBKYwggSiAgEAAoIBAQDfuefcepokRrnp\n"
-               "SSDsxu+QDqeD8GL9QnZz/N6IxTdBv6Wc10ExBe2IjS5dKI7AvhSSEK0zGE8Hkpmw\n"
-               "eccbiepQqeueteWzAMZ1uT43bD3k7eye7vWobiOP9QtoYGR6sG25h2W5Tbc91W4f\n"
-               "dvYnxYVJjx8wIVF0f3o25v+rQueoo0HlvGyA9/xi9GAaJL05OmK1xnMJgSvW/Q8Q\n"
-               "zq7apf1D6XPXHuhv5tevElkZ5jlvM2w0cTVyAzMrUh6Rkcn9xM4/NPWYghBc3jO4\n"
-               "TrPnSrobQGrX0fcizE/FN6I0in0Ke8Z+gMM8NeFcsjvLZe9MpY9i0pw/ygLIh5t3\n"
-               "O4qpwC1JAgMBAAECggEAIwiTCMEAGzciDKhhagJ66BWLYMtHTP5X2zDZThSH4xlW\n"
-               "HznL4RfbCtuEy5y6we7h/L90x8ACPB7WRz7CkYrmsMvy9A7q0b2I1k10MyyVgqBJ\n"
-               "QdgMitv4YKYQK7+QbG/tNrS/lqVXUOz3iiDQSgkRpqOtUBWfkj0WD7vbhF99NDhV\n"
-               "dxaehFkKv3yNy0bXJlHJBJ6KtOUnDwub8TExh8dyj3kB8Qzj4I98shaXPNUSSaOw\n"
-               "zG6QG72yrxlMs495jkIPbF2JDidmLrX+oVISwKyaBWx+BkFV/KFAEKgaB5/nCw7+\n"
-               "qq/jxsmXim3HuQ3MIAjq1yw9aGRH1HMi8Gn7tYlNGwKBgQDy6EEKpuEiW9wwlI2+\n"
-               "GVuSkhSTTX1h6qK/ay8Jtyb8yJM/BxogAQlfjdgFixiZHy5MaomTbfeT2GDji553\n"
-               "+RsnZ60+g7FI9nHwabSxtuCQ+vjbFqCsdMPAiSeG0bEzo0zf5TjASdUtuZL0vXjl\n"
-               "yMZWDEuESoVNlYlvCOVkw2nvIwKBgQDryPuSq6PNVHRWsKRRs5ju4wKs/1ucBOg5\n"
-               "gCcN8lE03mFCWAlZhypE4/fAhTQ/a5KQoAzc0QZcXRueDyNsnc+QWw3/QWf8/fkV\n"
-               "HPfTWS3Dcuj+4RnWUucaZ/mKFlTC3+eNSlpyaPIMlCjXGsJ9GlPrsaAi9KPbD2v/\n"
-               "XcMq/PMOowKBgHVf7S3sfZVQthFzdxqIvksQ84hKRW/vJT1B2bTkH56+fQhTsjgM\n"
-               "yC64J85l7DjxbDnYsSngVWXHhOnvKV/nq0tbOcefcydCjsQREBNfvxvPajjTskgj\n"
-               "FAQRQlxPL0U4f4khBk9EXhJ+PZithaHjZpNl1YfTSp62x3Yz4kTSeHnpAoGAGn5m\n"
-               "5kArE7NdrzACBrwrfww7DL1Uyd8zSOLBgKutvEcQnqfNxSWO9la3TAarrESmH2Ic\n"
-               "j+Nc15wOsl/5FwdUf1/73qa2zJKtHlY28qSeo8uRqrIYeSCvnyP3wjBoLc2C8zlb\n"
-               "mGd6azdqr2DuYahHrcAzwjnC/6Zn+DXM7FOn7AkCgYBp1xxY88cCoF24yffkD3MC\n"
-               "ACUury4qRSDTGx6/qCCkIyWxg1vuiDrlPWhSwQznxHvovcfpdjdbWcFY87IK6mpG\n"
-               "aJHwMJ7Kw+baoxGPZWHwdg6BgvUCihe3xlcaq6rOBoLviD6FOzbogg++Tvi0LemG\n"
-               "y/wEs/mZkaRzW4n41ir0Xw==\n"
-               "-----END PRIVATE KEY-----\n"
-       ;
-       dkim_sign(s.TheMessage, pkey_in, "dev.citadel.org", "foo");
+       // If we have a DKIM key, try to sign the message.
+       char *dkim_private_key = CtdlGetConfigStr("dkim_private_key");
+       char *dkim_selector = CtdlGetConfigStr("dkim_selector");
+       if (!IsEmptyStr(dkim_private_key) && !IsEmptyStr(dkim_selector)) {
+               char *pkey = strdup(dkim_private_key);
+               if (pkey) {
+                       char *sp;
+                       while (sp = strchr(pkey, '_')) {
+                               *sp = '\n';
+                       }
+                       syslog(LOG_DEBUG, "private key: <%s>\n", pkey);
+                       dkim_sign(s.TheMessage, pkey, "dev.citadel.org", dkim_selector);        // FIXME use the right hostname
+                       free(pkey);
+               }
+       }
 
        // Prepare the buffer for transmittal
        s.bytes_total = StrLength(s.TheMessage);