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Diffstat (limited to 'openssl-1.1.0h/doc/crypto/X509v3_get_ext_by_NID.pod')
| -rw-r--r-- | openssl-1.1.0h/doc/crypto/X509v3_get_ext_by_NID.pod | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/openssl-1.1.0h/doc/crypto/X509v3_get_ext_by_NID.pod b/openssl-1.1.0h/doc/crypto/X509v3_get_ext_by_NID.pod new file mode 100644 index 0000000..032f71c --- /dev/null +++ b/openssl-1.1.0h/doc/crypto/X509v3_get_ext_by_NID.pod @@ -0,0 +1,140 @@ +=pod + +=head1 NAME + +X509v3_get_ext_count, X509v3_get_ext, X509v3_get_ext_by_NID, +X509v3_get_ext_by_OBJ, X509v3_get_ext_by_critical, X509v3_delete_ext, +X509v3_add_ext, X509_get_ext_count, X509_get_ext, +X509_get_ext_by_NID, X509_get_ext_by_OBJ, X509_get_ext_by_critical, +X509_delete_ext, X509_add_ext, X509_CRL_get_ext_count, X509_CRL_get_ext, +X509_CRL_get_ext_by_NID, X509_CRL_get_ext_by_OBJ, X509_CRL_get_ext_by_critical, +X509_CRL_delete_ext, X509_CRL_add_ext, X509_REVOKED_get_ext_count, +X509_REVOKED_get_ext, X509_REVOKED_get_ext_by_NID, X509_REVOKED_get_ext_by_OBJ, +X509_REVOKED_get_ext_by_critical, X509_REVOKED_delete_ext, +X509_REVOKED_add_ext - extension stack utility functions + +=head1 SYNOPSIS + + #include <openssl/x509.h> + + int X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x); + X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc); + + int X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x, + int nid, int lastpos); + int X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *x, + const ASN1_OBJECT *obj, int lastpos); + int X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *x, + int crit, int lastpos); + X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc); + STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x, + X509_EXTENSION *ex, int loc); + + int X509_get_ext_count(const X509 *x); + X509_EXTENSION *X509_get_ext(const X509 *x, int loc); + int X509_get_ext_by_NID(const X509 *x, int nid, int lastpos); + int X509_get_ext_by_OBJ(const X509 *x, const ASN1_OBJECT *obj, int lastpos); + int X509_get_ext_by_critical(const X509 *x, int crit, int lastpos); + X509_EXTENSION *X509_delete_ext(X509 *x, int loc); + int X509_add_ext(X509 *x, X509_EXTENSION *ex, int loc); + + int X509_CRL_get_ext_count(const X509_CRL *x); + X509_EXTENSION *X509_CRL_get_ext(const X509_CRL *x, int loc); + int X509_CRL_get_ext_by_NID(const X509_CRL *x, int nid, int lastpos); + int X509_CRL_get_ext_by_OBJ(const X509_CRL *x, const ASN1_OBJECT *obj, int lastpos); + int X509_CRL_get_ext_by_critical(const X509_CRL *x, int crit, int lastpos); + X509_EXTENSION *X509_CRL_delete_ext(X509_CRL *x, int loc); + int X509_CRL_add_ext(X509_CRL *x, X509_EXTENSION *ex, int loc); + + int X509_REVOKED_get_ext_count(const X509_REVOKED *x); + X509_EXTENSION *X509_REVOKED_get_ext(const X509_REVOKED *x, int loc); + int X509_REVOKED_get_ext_by_NID(const X509_REVOKED *x, int nid, int lastpos); + int X509_REVOKED_get_ext_by_OBJ(const X509_REVOKED *x, const ASN1_OBJECT *obj, + int lastpos); + int X509_REVOKED_get_ext_by_critical(const X509_REVOKED *x, int crit, int lastpos); + X509_EXTENSION *X509_REVOKED_delete_ext(X509_REVOKED *x, int loc); + int X509_REVOKED_add_ext(X509_REVOKED *x, X509_EXTENSION *ex, int loc); + +=head1 DESCRIPTION + +X509v3_get_ext_count() retrieves the number of extensions in B<x>. + +X509v3_get_ext() retrieves extension B<loc> from B<x>. The index B<loc> +can take any value from B<0> to X509_get_ext_count(x) - 1. The returned +extension is an internal pointer which B<must not> be freed up by the +application. + +X509v3_get_ext_by_NID() and X509v3_get_ext_by_OBJ() look for an extension +with B<nid> or B<obj> from extension stack B<x>. The search starts from the +extension after B<lastpos> or from the beginning if <lastpos> is B<-1>. If +the extension is found its index is returned otherwise B<-1> is returned. + +X509v3_get_ext_by_critical() is similar to X509v3_get_ext_by_NID() except it +looks for an extension of criticality B<crit>. A zero value for B<crit> +looks for a non-critical extension a non-zero value looks for a critical +extension. + +X509v3_delete_ext() deletes the extension with index B<loc> from B<x>. The +deleted extension is returned and must be freed by the caller. If B<loc> +is in invalid index value B<NULL> is returned. + +X509v3_add_ext() adds extension B<ex> to stack B<*x> at position B<loc>. If +B<loc> is B<-1> the new extension is added to the end. If B<*x> is B<NULL> +a new stack will be allocated. The passed extension B<ex> is duplicated +internally so it must be freed after use. + +X509_get_ext_count(), X509_get_ext(), X509_get_ext_by_NID(), +X509_get_ext_by_OBJ(), X509_get_ext_by_critical(), X509_delete_ext() +and X509_add_ext() operate on the extensions of certificate B<x> they are +otherwise identical to the X509v3 functions. + +X509_CRL_get_ext_count(), X509_CRL_get_ext(), X509_CRL_get_ext_by_NID(), +X509_CRL_get_ext_by_OBJ(), X509_CRL_get_ext_by_critical(), +X509_CRL_delete_ext() and X509_CRL_add_ext() operate on the extensions of +CRL B<x> they are otherwise identical to the X509v3 functions. + +X509_REVOKED_get_ext_count(), X509_REVOKED_get_ext(), +X509_REVOKED_get_ext_by_NID(), X509_REVOKED_get_ext_by_OBJ(), +X509_REVOKED_get_ext_by_critical(), X509_REVOKED_delete_ext() and +X509_REVOKED_add_ext() operate on the extensions of CRL entry B<x> +they are otherwise identical to the X509v3 functions. + +=head1 NOTES + +These functions are used to examine stacks of extensions directly. Many +applications will want to parse or encode and add an extension: they should +use the extension encode and decode functions instead such as +X509_add1_ext_i2d() and X509_get_ext_d2i(). + +Extension indices start from zero, so a zero index return value is B<not> an +error. These search functions start from the extension B<after> the B<lastpos> +parameter so it should initially be set to B<-1>, if it is set to zero the +initial extension will not be checked. + +=head1 RETURN VALUES + +X509v3_get_ext_count() returns the extension count. + +X509v3_get_ext() and X509v3_delete_ext() return an B<X509_EXTENSION> pointer +or B<NULL> if an error occurs. + +X509v3_get_ext_by_NID() X509v3_get_ext_by_OBJ() and +X509v3_get_ext_by_critical() return the an extension index or B<-1> if an +error occurs. + +X509v3_add_ext() returns a stack of extensions or B<NULL> on error. + +=head1 SEE ALSO + +L<X509V3_get_d2i(3)> + +=head1 COPYRIGHT + +Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. + +Licensed under the OpenSSL license (the "License"). You may not use +this file except in compliance with the License. You can obtain a copy +in the file LICENSE in the source distribution or at +L<https://www.openssl.org/source/license.html>. + +=cut |