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authorJannis Hoffmann <jannis@fehcom.de>2024-07-09 11:44:11 +0200
committerJannis Hoffmann <jannis@fehcom.de>2024-07-09 11:44:11 +0200
commitf1b71c9fe7dbb4886588a036399cf5ebe16b7c47 (patch)
treee07786aa479c9fb6ee3e537078470aaab5454f80 /src/include/dkim.h
parenta293489ee83c8b05d845a162dc2a4de026f3775d (diff)
removed top level directory
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+/*****************************************************************************
+* Copyright 2005 Alt-N Technologies, Ltd.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* This code incorporates intellectual property owned by Yahoo! and licensed
+* pursuant to the Yahoo! DomainKeys Patent License Agreement.
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* Changes done by ¢feh@fehcom.de obeying the above license
+*
+*****************************************************************************/
+#define DKIM_CALL
+#define MAKELONG(a,b) ((long)(((unsigned)(a) & 0xffff) | (((unsigned)(b) & 0xffff) << 16)))
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// DKIM hash algorithms
+#define DKIM_HASH_SHA1 1
+#define DKIM_HASH_SHA256 2
+#define DKIM_HASH_SHA1_AND_SHA256 3
+#define DKIM_HASH_ED25519 4
+#define DKIM_HASH_RSA256_AND_ED25519 5
+
+// DKIM canonicalization methods
+#define DKIM_CANON_SIMPLE 1
+#define DKIM_CANON_NOWSP 2
+#define DKIM_CANON_RELAXED 3
+
+#define DKIM_SIGN_SIMPLE MAKELONG(DKIM_CANON_SIMPLE,DKIM_CANON_SIMPLE)
+#define DKIM_SIGN_SIMPLE_RELAXED MAKELONG(DKIM_CANON_RELAXED,DKIM_CANON_SIMPLE)
+#define DKIM_SIGN_RELAXED MAKELONG(DKIM_CANON_RELAXED,DKIM_CANON_RELAXED)
+#define DKIM_SIGN_RELAXED_SIMPLE MAKELONG(DKIM_CANON_SIMPLE,DKIM_CANON_RELAXED)
+
+// DKIM Error codes
+#define DKIM_SUCCESS 0 // operation successful
+#define DKIM_FAIL -1 // verify error: message is suspicious
+#define DKIM_BAD_SYNTAX -2 // signature error: DKIM-Signature could not parse or has bad tags/values
+#define DKIM_SIGNATURE_BAD -3 // signature error: RSA/ED25519 verify failed
+#define DKIM_SIGNATURE_BAD_BUT_TESTING -4 // signature error: RSA/ED25519 verify failed but testing
+#define DKIM_SIGNATURE_EXPIRED -5 // signature error: x= is old
+#define DKIM_SELECTOR_INVALID -6 // signature error: selector doesn't parse or contains invalid values
+#define DKIM_SELECTOR_GRANULARITY_MISMATCH -7 // signature error: selector g= doesn't match i=
+#define DKIM_SELECTOR_KEY_REVOKED -8 // signature error: selector p= empty
+#define DKIM_SELECTOR_DOMAIN_NAME_TOO_LONG -9 // signature error: selector domain name too long to request
+#define DKIM_SELECTOR_DNS_TEMP_FAILURE -10 // signature error: temporary dns failure requesting selector
+#define DKIM_SELECTOR_DNS_PERM_FAILURE -11 // signature error: permanent dns failure requesting selector
+#define DKIM_SELECTOR_PUBLIC_KEY_INVALID -12 // signature error: selector p= value invalid or wrong format
+#define DKIM_NO_SIGNATURES -13 // process error, no sigs
+#define DKIM_NO_VALID_SIGNATURES -14 // process error, no valid sigs
+#define DKIM_BODY_HASH_MISMATCH -15 // sigature verify error: message body does not hash to bh value
+#define DKIM_SELECTOR_ALGORITHM_MISMATCH -16 // signature error: selector h= doesn't match signature a=
+#define DKIM_STAT_INCOMPAT -17 // signature error: incompatible v=
+#define DKIM_UNSIGNED_FROM -18 // signature error: not all message's From headers in signature
+#define DKIM_OUT_OF_MEMORY -20 // memory allocation failed
+#define DKIM_INVALID_CONTEXT -21 // DKIMContext structure invalid for this operation
+#define DKIM_NO_SENDER -22 // signing error: Could not find From: or Sender: header in message
+#define DKIM_BAD_PRIVATE_KEY -23 // signing error: Could not parse private key
+#define DKIM_BUFFER_TOO_SMALL -24 // signing error: Buffer passed in is not large enough
+#define DKIM_MAX_ERROR -25 // set this to 1 greater than the highest error code (but negative)
+
+// DKIM_SUCCESS // verify result: all signatures verified
+ // signature result: signature verified
+#define DKIM_FINISHED_BODY 1 // process result: no more message body is needed
+#define DKIM_PARTIAL_SUCCESS 2 // verify result: at least one but not all signatures verified
+#define DKIM_NEUTRAL 3 // verify result: no signatures verified but message is not suspicous
+#define DKIM_SUCCESS_BUT_EXTRA 4 // signature result: signature verified but it did not include all of the body
+
+
+
+// This function is called once for each header in the message
+// return 1 to include this header in the signature and 0 to exclude.
+typedef int (DKIM_CALL *DKIMHEADERCALLBACK)(const char* szHeader);
+
+// This function is called to retrieve a TXT record from DNS
+typedef int (DKIM_CALL *DKIMDNSCALLBACK)(const char* szFQDN,char* szBuffer,int nBufLen);
+
+typedef struct DKIMContext_t
+{
+ unsigned int reserved1;
+ unsigned int reserved2;
+ void* reserved3;
+} DKIMContext;
+
+typedef struct DKIMSignOptions_t
+{
+ int nCanon; // canonization
+ int nIncludeBodyLengthTag; // 0 = don't include l= tag, 1 = include l= tag
+ int nIncludeTimeStamp; // 0 = don't include t= tag, 1 = include t= tag
+ int nIncludeQueryMethod; // 0 = don't include q= tag, 1 = include q= tag
+ char szSelector[64]; // selector - required
+ char szSelectorE[64]; // 2nd selector - optional
+ char szDomain[256]; // domain - optional - if empty, domain is computed from sender
+ char szIdentity[256]; // for i= tag, if empty tag will not be included in sig
+ unsigned long expireTime; // for x= tag, if 0 tag will not be included in sig
+ DKIMHEADERCALLBACK pfnHeaderCallback; // header callback
+ char szRequiredHeaders[256]; // colon-separated list of headers that must be signed
+ int nHash; // use one of the DKIM_HASH_xx constants here
+ // even if not present in the message
+ int nIncludeCopiedHeaders; // 0 = don't include z= tag, 1 = include z= tag
+} DKIMSignOptions;
+
+typedef struct DKIMVerifyOptions_t
+{
+ DKIMDNSCALLBACK pfnSelectorCallback; // selector record callback
+ DKIMDNSCALLBACK pfnPracticesCallback; // ADSP record callback
+ int nHonorBodyLengthTag; // 0 = ignore l= tag, 1 = use l= tag to limit the amount of body verified
+ int nCheckPractices; // 0 = use default (unknown) practices, 1 = request and use author domain signing practices
+ int nSubjectRequired; // 0 = subject is required to be signed, 1 = not required
+ int nSaveCanonicalizedData; // 0 = canonicalized data is not saved, 1 = canonicalized data is saved
+ int nAllowUnsignedFromHeaders; // 0 = From headers not included in the signature are not allowed, 1 = allowed
+} DKIMVerifyOptions;
+
+typedef struct DKIMVerifyDetails_t
+{
+ char *szSignature;
+ char *szSignatureDomain;
+ char *szIdentityDomain;
+ char *szCanonicalizedData;
+ int nResult;
+} DKIMVerifyDetails;
+
+int DKIM_CALL DKIMSignInit(DKIMContext* pSignContext,DKIMSignOptions* pOptions);
+int DKIM_CALL DKIMSignProcess(DKIMContext* pSignContext,char* szBuffer,int nBufLength);
+int DKIM_CALL DKIMSignGetSig2(DKIMContext* pSignContext,char* szRSAPrivKey,char *szECCPrivKey,char** pszSignature);
+void DKIM_CALL DKIMSignFree(DKIMContext* pSignContext);
+
+int DKIM_CALL DKIMVerifyInit(DKIMContext* pVerifyContext,DKIMVerifyOptions* pOptions);
+int DKIM_CALL DKIMVerifyProcess(DKIMContext* pVerifyContext,const char* szBuffer,int nBufLength);
+int DKIM_CALL DKIMVerifyResults(DKIMContext* pVerifyContext);
+int DKIM_CALL DKIMVerifyGetDetails(DKIMContext* pVerifyContext,int* nSigCount,DKIMVerifyDetails** pDetails,char* szPractices);
+void DKIM_CALL DKIMVerifyFree(DKIMContext* pVerifyContext);
+
+// const char *DKIM_CALL DKIMVersion();
+
+const char *DKIM_CALL DKIMGetErrorString(int ErrorCode);
+
+int _DKIM_ReportResult(char const *,char const *,char const *);
+const char *DKIM_ErrorResult(const int);
+
+#ifdef __cplusplus
+}
+#endif