* PDKIM - a RFC4871 (DKIM) implementation
*
* Copyright (C) 2009 - 2012 Tom Kistner <tom@duncanthrax.net>
+ * Copyright (c) Jeremy Harris 2016
*
* http://duncanthrax.net/pdkim/
*
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
+#ifndef PDKIM_H
+#define PDKIM_H
-/* -------------------------------------------------------------------------- */
-/* Debugging. This can also be enabled/disabled at run-time. I recommend to
- leave it defined. */
-#define PDKIM_DEBUG
+#include "blob.h"
+#include "hash.h"
/* -------------------------------------------------------------------------- */
/* Length of the preallocated buffer for the "answer" from the dns/txt
/* Function success / error codes */
#define PDKIM_OK 0
#define PDKIM_FAIL -1
-#define PDKIM_ERR_OOM -100
#define PDKIM_ERR_RSA_PRIVKEY -101
#define PDKIM_ERR_RSA_SIGNING -102
#define PDKIM_ERR_LONG_LINE -103
#define PDKIM_ERR_BUFFER_TOO_SMALL -104
+#define PDKIM_SIGN_PRIVKEY_WRAP -105
+#define PDKIM_SIGN_PRIVKEY_B64D -106
/* -------------------------------------------------------------------------- */
/* Main/Extended verification status */
#define PDKIM_VERIFY_FAIL_MESSAGE 2
#define PDKIM_VERIFY_INVALID_PUBKEY_UNAVAILABLE 3
#define PDKIM_VERIFY_INVALID_BUFFER_SIZE 4
-#define PDKIM_VERIFY_INVALID_PUBKEY_PARSING 5
+#define PDKIM_VERIFY_INVALID_PUBKEY_DNSRECORD 5
+#define PDKIM_VERIFY_INVALID_PUBKEY_IMPORT 6
/* -------------------------------------------------------------------------- */
/* Some parameter values */
char *srvtype; /* s= */
char *notes; /* n= */
- char *key; /* p= */
- int key_len;
+ blob key; /* p= */
int testing; /* t=y */
int no_subdomaining; /* t=s */
/* (h=) Colon-separated list of header names that are included in the
signature */
- char *headernames;
+ uschar *headernames;
/* (z=) */
char *copiedheaders;
/* (b=) Raw signature data, along with its length in bytes */
- char *sigdata;
- int sigdata_len;
+ blob sigdata;
/* (bh=) Raw body hash data, along with its length in bytes */
- char *bodyhash;
- int bodyhash_len;
+ blob bodyhash;
/* Folded DKIM-Signature: header. Singing only, NULL for verifying.
Ready for insertion into the message. Note: Folded using CRLFTB,
/* Properties below this point are used internally only ------------- */
/* Per-signature helper variables ----------------------------------- */
- sha1_context *sha1_body; /* SHA1 block */
- sha2_context *sha2_body; /* SHA256 block */
+ hctx body_hash;
+
unsigned long signed_body_bytes; /* How many body bytes we hashed */
pdkim_stringlist *headers; /* Raw headers included in the sig */
/* Signing specific ------------------------------------------------- */
- char *rsa_privkey; /* Private RSA key */
- char *sign_headers; /* To-be-signed header names */
- char *rawsig_no_b_val; /* Original signature header w/o b= tag value. */
+ uschar * rsa_privkey; /* Private RSA key */
+ uschar * sign_headers; /* To-be-signed header names */
+ uschar * rawsig_no_b_val; /* Original signature header w/o b= tag value. */
} pdkim_signature;
/* Context to keep state between all operations. */
#define PDKIM_MODE_SIGN 0
#define PDKIM_MODE_VERIFY 1
-#define PDKIM_INPUT_NORMAL 0
-#define PDKIM_INPUT_SMTP 1
typedef struct pdkim_ctx {
/* PDKIM_MODE_VERIFY or PDKIM_MODE_SIGN */
int mode;
- /* PDKIM_INPUT_SMTP or PDKIM_INPUT_NORMAL */
- int input_mode;
-
/* One (signing) or several chained (verification) signatures */
pdkim_signature *sig;
int(*dns_txt_callback)(char *, char *);
/* Coder's little helpers */
- pdkim_str *cur_header;
+ uschar *cur_header;
+ int cur_header_size;
+ int cur_header_len;
char *linebuf;
int linebuf_offset;
- int seen_lf;
- int seen_eod;
- int past_headers;
+ BOOL seen_lf;
+ BOOL seen_eod;
+ BOOL past_headers;
int num_buffered_crlf;
int num_headers;
pdkim_stringlist *headers; /* Raw headers for verification */
-
-#ifdef PDKIM_DEBUG
- /* A FILE pointer. When not NULL, debug output will be generated
- and sent to this stream */
- FILE *debug_stream;
-#endif
-
} pdkim_ctx;
extern "C" {
#endif
+void pdkim_init (void);
+
DLLEXPORT
-pdkim_ctx *pdkim_init_sign (int, char *, char *, char *);
+pdkim_ctx *pdkim_init_sign (char *, char *, char *, int);
DLLEXPORT
-pdkim_ctx *pdkim_init_verify (int, int(*)(char *, char *));
+pdkim_ctx *pdkim_init_verify (int(*)(char *, char *));
DLLEXPORT
int pdkim_set_optional (pdkim_ctx *, char *, char *,int, int,
- long, int,
+ long,
unsigned long,
unsigned long);
DLLEXPORT
void pdkim_free_ctx (pdkim_ctx *);
-#ifdef PDKIM_DEBUG
-DLLEXPORT
-void pdkim_set_debug_stream(pdkim_ctx *, FILE *);
-#endif
-
#ifdef __cplusplus
}
#endif
+
+#endif