Update files for OpenSSL-1.0.0f import.
[dragonfly.git] / secure / lib / libcrypto / man / X509_STORE_CTX_get_error.3
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124.\" ========================================================================
125.\"
126.IX Title "X509_STORE_CTX_get_error 3"
e3261593 127.TH X509_STORE_CTX_get_error 3 "2012-01-04" "1.0.0f" "OpenSSL"
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128.\" For nroff, turn off justification. Always turn off hyphenation; it makes
129.\" way too many mistakes in technical documents.
130.if n .ad l
131.nh
132.SH "NAME"
133X509_STORE_CTX_get_error, X509_STORE_CTX_set_error, X509_STORE_CTX_get_error_depth, X509_STORE_CTX_get_current_cert, X509_STORE_CTX_get1_chain, X509_verify_cert_error_string \- get or set certificate verification status information
134.SH "SYNOPSIS"
135.IX Header "SYNOPSIS"
136.Vb 2
137\& #include <openssl/x509.h>
138\& #include <openssl/x509_vfy.h>
139\&
140\& int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx);
141\& void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx,int s);
142\& int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx);
143\& X509 * X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx);
144\&
145\& STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx);
146\&
147\& const char *X509_verify_cert_error_string(long n);
148.Ve
149.SH "DESCRIPTION"
150.IX Header "DESCRIPTION"
151These functions are typically called after \fIX509_verify_cert()\fR has indicated
152an error or in a verification callback to determine the nature of an error.
153.PP
154\&\fIX509_STORE_CTX_get_error()\fR returns the error code of \fBctx\fR, see
155the \fB\s-1ERROR\s0 \s-1CODES\s0\fR section for a full description of all error codes.
156.PP
157\&\fIX509_STORE_CTX_set_error()\fR sets the error code of \fBctx\fR to \fBs\fR. For example
158it might be used in a verification callback to set an error based on additional
159checks.
160.PP
161\&\fIX509_STORE_CTX_get_error_depth()\fR returns the \fBdepth\fR of the error. This is a
162non-negative integer representing where in the certificate chain the error
163occurred. If it is zero it occured in the end entity certificate, one if
164it is the certificate which signed the end entity certificate and so on.
165.PP
166\&\fIX509_STORE_CTX_get_current_cert()\fR returns the certificate in \fBctx\fR which
167caused the error or \fB\s-1NULL\s0\fR if no certificate is relevant.
168.PP
169\&\fIX509_STORE_CTX_get1_chain()\fR returns a complete validate chain if a previous
170call to \fIX509_verify_cert()\fR is successful. If the call to \fIX509_verify_cert()\fR
171is \fBnot\fR successful the returned chain may be incomplete or invalid. The
172returned chain persists after the \fBctx\fR structure is freed, when it is
173no longer needed it should be free up using:
174.PP
175.Vb 1
176\& sk_X509_pop_free(chain, X509_free);
177.Ve
178.PP
179\&\fIX509_verify_cert_error_string()\fR returns a human readable error string for
180verification error \fBn\fR.
181.SH "RETURN VALUES"
182.IX Header "RETURN VALUES"
183\&\fIX509_STORE_CTX_get_error()\fR returns \fBX509_V_OK\fR or an error code.
184.PP
185\&\fIX509_STORE_CTX_get_error_depth()\fR returns a non-negative error depth.
186.PP
187\&\fIX509_STORE_CTX_get_current_cert()\fR returns the cerificate which caused the
188error or \fB\s-1NULL\s0\fR if no certificate is relevant to the error.
189.PP
190\&\fIX509_verify_cert_error_string()\fR returns a human readable error string for
191verification error \fBn\fR.
192.SH "ERROR CODES"
193.IX Header "ERROR CODES"
194A list of error codes and messages is shown below. Some of the
195error codes are defined but currently never returned: these are described as
196\&\*(L"unused\*(R".
197.IP "\fBX509_V_OK: ok\fR" 4
198.IX Item "X509_V_OK: ok"
199the operation was successful.
200.IP "\fBX509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: unable to get issuer certificate\fR" 4
201.IX Item "X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: unable to get issuer certificate"
202the issuer certificate could not be found: this occurs if the issuer certificate
203of an untrusted certificate cannot be found.
204.IP "\fBX509_V_ERR_UNABLE_TO_GET_CRL: unable to get certificate \s-1CRL\s0\fR" 4
205.IX Item "X509_V_ERR_UNABLE_TO_GET_CRL: unable to get certificate CRL"
206the \s-1CRL\s0 of a certificate could not be found.
207.IP "\fBX509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: unable to decrypt certificate's signature\fR" 4
208.IX Item "X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: unable to decrypt certificate's signature"
209the certificate signature could not be decrypted. This means that the actual
210signature value could not be determined rather than it not matching the
211expected value, this is only meaningful for \s-1RSA\s0 keys.
212.IP "\fBX509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: unable to decrypt \s-1CRL\s0's signature\fR" 4
213.IX Item "X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: unable to decrypt CRL's signature"
214the \s-1CRL\s0 signature could not be decrypted: this means that the actual signature
215value could not be determined rather than it not matching the expected value.
216Unused.
217.IP "\fBX509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: unable to decode issuer public key\fR" 4
218.IX Item "X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: unable to decode issuer public key"
219the public key in the certificate SubjectPublicKeyInfo could not be read.
220.IP "\fBX509_V_ERR_CERT_SIGNATURE_FAILURE: certificate signature failure\fR" 4
221.IX Item "X509_V_ERR_CERT_SIGNATURE_FAILURE: certificate signature failure"
222the signature of the certificate is invalid.
223.IP "\fBX509_V_ERR_CRL_SIGNATURE_FAILURE: \s-1CRL\s0 signature failure\fR" 4
224.IX Item "X509_V_ERR_CRL_SIGNATURE_FAILURE: CRL signature failure"
225the signature of the certificate is invalid.
226.IP "\fBX509_V_ERR_CERT_NOT_YET_VALID: certificate is not yet valid\fR" 4
227.IX Item "X509_V_ERR_CERT_NOT_YET_VALID: certificate is not yet valid"
228the certificate is not yet valid: the notBefore date is after the current time.
229.IP "\fBX509_V_ERR_CERT_HAS_EXPIRED: certificate has expired\fR" 4
230.IX Item "X509_V_ERR_CERT_HAS_EXPIRED: certificate has expired"
231the certificate has expired: that is the notAfter date is before the current time.
232.IP "\fBX509_V_ERR_CRL_NOT_YET_VALID: \s-1CRL\s0 is not yet valid\fR" 4
233.IX Item "X509_V_ERR_CRL_NOT_YET_VALID: CRL is not yet valid"
234the \s-1CRL\s0 is not yet valid.
235.IP "\fBX509_V_ERR_CRL_HAS_EXPIRED: \s-1CRL\s0 has expired\fR" 4
236.IX Item "X509_V_ERR_CRL_HAS_EXPIRED: CRL has expired"
237the \s-1CRL\s0 has expired.
238.IP "\fBX509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: format error in certificate's notBefore field\fR" 4
239.IX Item "X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: format error in certificate's notBefore field"
240the certificate notBefore field contains an invalid time.
241.IP "\fBX509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: format error in certificate's notAfter field\fR" 4
242.IX Item "X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: format error in certificate's notAfter field"
243the certificate notAfter field contains an invalid time.
244.IP "\fBX509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: format error in \s-1CRL\s0's lastUpdate field\fR" 4
245.IX Item "X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: format error in CRL's lastUpdate field"
246the \s-1CRL\s0 lastUpdate field contains an invalid time.
247.IP "\fBX509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: format error in \s-1CRL\s0's nextUpdate field\fR" 4
248.IX Item "X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: format error in CRL's nextUpdate field"
249the \s-1CRL\s0 nextUpdate field contains an invalid time.
250.IP "\fBX509_V_ERR_OUT_OF_MEM: out of memory\fR" 4
251.IX Item "X509_V_ERR_OUT_OF_MEM: out of memory"
252an error occurred trying to allocate memory. This should never happen.
253.IP "\fBX509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: self signed certificate\fR" 4
254.IX Item "X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: self signed certificate"
255the passed certificate is self signed and the same certificate cannot be found
256in the list of trusted certificates.
257.IP "\fBX509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: self signed certificate in certificate chain\fR" 4
258.IX Item "X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: self signed certificate in certificate chain"
259the certificate chain could be built up using the untrusted certificates but
260the root could not be found locally.
261.IP "\fBX509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: unable to get local issuer certificate\fR" 4
262.IX Item "X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: unable to get local issuer certificate"
263the issuer certificate of a locally looked up certificate could not be found.
264This normally means the list of trusted certificates is not complete.
265.IP "\fBX509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: unable to verify the first certificate\fR" 4
266.IX Item "X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: unable to verify the first certificate"
267no signatures could be verified because the chain contains only one certificate
268and it is not self signed.
269.IP "\fBX509_V_ERR_CERT_CHAIN_TOO_LONG: certificate chain too long\fR" 4
270.IX Item "X509_V_ERR_CERT_CHAIN_TOO_LONG: certificate chain too long"
271the certificate chain length is greater than the supplied maximum depth. Unused.
272.IP "\fBX509_V_ERR_CERT_REVOKED: certificate revoked\fR" 4
273.IX Item "X509_V_ERR_CERT_REVOKED: certificate revoked"
274the certificate has been revoked.
275.IP "\fBX509_V_ERR_INVALID_CA: invalid \s-1CA\s0 certificate\fR" 4
276.IX Item "X509_V_ERR_INVALID_CA: invalid CA certificate"
277a \s-1CA\s0 certificate is invalid. Either it is not a \s-1CA\s0 or its extensions are not
278consistent with the supplied purpose.
279.IP "\fBX509_V_ERR_PATH_LENGTH_EXCEEDED: path length constraint exceeded\fR" 4
280.IX Item "X509_V_ERR_PATH_LENGTH_EXCEEDED: path length constraint exceeded"
281the basicConstraints pathlength parameter has been exceeded.
282.IP "\fBX509_V_ERR_INVALID_PURPOSE: unsupported certificate purpose\fR" 4
283.IX Item "X509_V_ERR_INVALID_PURPOSE: unsupported certificate purpose"
284the supplied certificate cannot be used for the specified purpose.
285.IP "\fBX509_V_ERR_CERT_UNTRUSTED: certificate not trusted\fR" 4
286.IX Item "X509_V_ERR_CERT_UNTRUSTED: certificate not trusted"
287the root \s-1CA\s0 is not marked as trusted for the specified purpose.
288.IP "\fBX509_V_ERR_CERT_REJECTED: certificate rejected\fR" 4
289.IX Item "X509_V_ERR_CERT_REJECTED: certificate rejected"
290the root \s-1CA\s0 is marked to reject the specified purpose.
291.IP "\fBX509_V_ERR_SUBJECT_ISSUER_MISMATCH: subject issuer mismatch\fR" 4
292.IX Item "X509_V_ERR_SUBJECT_ISSUER_MISMATCH: subject issuer mismatch"
293the current candidate issuer certificate was rejected because its subject name
294did not match the issuer name of the current certificate. This is only set
295if issuer check debugging is enabled it is used for status notification and
296is \fBnot\fR in itself an error.
297.IP "\fBX509_V_ERR_AKID_SKID_MISMATCH: authority and subject key identifier mismatch\fR" 4
298.IX Item "X509_V_ERR_AKID_SKID_MISMATCH: authority and subject key identifier mismatch"
299the current candidate issuer certificate was rejected because its subject key
300identifier was present and did not match the authority key identifier current
301certificate. This is only set if issuer check debugging is enabled it is used
302for status notification and is \fBnot\fR in itself an error.
303.IP "\fBX509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH: authority and issuer serial number mismatch\fR" 4
304.IX Item "X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH: authority and issuer serial number mismatch"
305the current candidate issuer certificate was rejected because its issuer name
306and serial number was present and did not match the authority key identifier of
307the current certificate. This is only set if issuer check debugging is enabled
308it is used for status notification and is \fBnot\fR in itself an error.
309.IP "\fBX509_V_ERR_KEYUSAGE_NO_CERTSIGN:key usage does not include certificate signing\fR" 4
310.IX Item "X509_V_ERR_KEYUSAGE_NO_CERTSIGN:key usage does not include certificate signing"
311the current candidate issuer certificate was rejected because its keyUsage
312extension does not permit certificate signing. This is only set if issuer check
313debugging is enabled it is used for status notification and is \fBnot\fR in itself
314an error.
315.IP "\fBX509_V_ERR_INVALID_EXTENSION: invalid or inconsistent certificate extension\fR" 4
316.IX Item "X509_V_ERR_INVALID_EXTENSION: invalid or inconsistent certificate extension"
317A certificate extension had an invalid value (for example an incorrect
318encoding) or some value inconsistent with other extensions.
319.IP "\fBX509_V_ERR_INVALID_POLICY_EXTENSION: invalid or inconsistent certificate policy extension\fR" 4
320.IX Item "X509_V_ERR_INVALID_POLICY_EXTENSION: invalid or inconsistent certificate policy extension"
321A certificate policies extension had an invalid value (for example an incorrect
322encoding) or some value inconsistent with other extensions. This error only
323occurs if policy processing is enabled.
324.IP "\fBX509_V_ERR_NO_EXPLICIT_POLICY: no explicit policy\fR" 4
325.IX Item "X509_V_ERR_NO_EXPLICIT_POLICY: no explicit policy"
326The verification flags were set to require and explicit policy but none was
327present.
328.IP "\fBX509_V_ERR_DIFFERENT_CRL_SCOPE: Different \s-1CRL\s0 scope\fR" 4
329.IX Item "X509_V_ERR_DIFFERENT_CRL_SCOPE: Different CRL scope"
330The only CRLs that could be found did not match the scope of the certificate.
331.IP "\fBX509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE: Unsupported extension feature\fR" 4
332.IX Item "X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE: Unsupported extension feature"
333Some feature of a certificate extension is not supported. Unused.
334.IP "\fBX509_V_ERR_PERMITTED_VIOLATION: permitted subtree violation\fR" 4
335.IX Item "X509_V_ERR_PERMITTED_VIOLATION: permitted subtree violation"
336A name constraint violation occured in the permitted subtrees.
337.IP "\fBX509_V_ERR_EXCLUDED_VIOLATION: excluded subtree violation\fR" 4
338.IX Item "X509_V_ERR_EXCLUDED_VIOLATION: excluded subtree violation"
339A name constraint violation occured in the excluded subtrees.
340.IP "\fBX509_V_ERR_SUBTREE_MINMAX: name constraints minimum and maximum not supported\fR" 4
341.IX Item "X509_V_ERR_SUBTREE_MINMAX: name constraints minimum and maximum not supported"
342A certificate name constraints extension included a minimum or maximum field:
343this is not supported.
344.IP "\fBX509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE: unsupported name constraint type\fR" 4
345.IX Item "X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE: unsupported name constraint type"
346An unsupported name constraint type was encountered. OpenSSL currently only
347supports directory name, \s-1DNS\s0 name, email and \s-1URI\s0 types.
348.IP "\fBX509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX: unsupported or invalid name constraint syntax\fR" 4
349.IX Item "X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX: unsupported or invalid name constraint syntax"
350The format of the name constraint is not recognised: for example an email
351address format of a form not mentioned in \s-1RFC3280\s0. This could be caused by
352a garbage extension or some new feature not currently supported.
353.IP "\fBX509_V_ERR_CRL_PATH_VALIDATION_ERROR: \s-1CRL\s0 path validation error\fR" 4
354.IX Item "X509_V_ERR_CRL_PATH_VALIDATION_ERROR: CRL path validation error"
355An error occured when attempting to verify the \s-1CRL\s0 path. This error can only
356happen if extended \s-1CRL\s0 checking is enabled.
357.IP "\fBX509_V_ERR_APPLICATION_VERIFICATION: application verification failure\fR" 4
358.IX Item "X509_V_ERR_APPLICATION_VERIFICATION: application verification failure"
359an application specific error. This will never be returned unless explicitly
360set by an application.
361.SH "NOTES"
362.IX Header "NOTES"
363The above functions should be used instead of directly referencing the fields
364in the \fBX509_VERIFY_CTX\fR structure.
365.PP
366In versions of OpenSSL before 1.0 the current certificate returned by
367\&\fIX509_STORE_CTX_get_current_cert()\fR was never \fB\s-1NULL\s0\fR. Applications should
368check the return value before printing out any debugging information relating
369to the current certificate.
370.PP
371If an unrecognised error code is passed to \fIX509_verify_cert_error_string()\fR the
372numerical value of the unknown code is returned in a static buffer. This is not
373thread safe but will never happen unless an invalid code is passed.
374.SH "SEE ALSO"
375.IX Header "SEE ALSO"
376\&\fIX509_verify_cert\fR\|(3)
377.SH "HISTORY"
378.IX Header "HISTORY"
379\&\s-1TBA\s0
380.SH "POD ERRORS"
381.IX Header "POD ERRORS"
382Hey! \fBThe above document had some coding errors, which are explained below:\fR
383.IP "Around line 281:" 4
384.IX Item "Around line 281:"
385You forgot a '=back' before '=head1'