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Diffstat (limited to 'doc/openssl.txt')
| -rw-r--r-- | doc/openssl.txt | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/doc/openssl.txt b/doc/openssl.txt index 5da519e7e4..e8c0cd7ea6 100644 --- a/doc/openssl.txt +++ b/doc/openssl.txt @@ -507,47 +507,6 @@ details about the structures returned. The returned structure should be freed after use using the relevant free function, BASIC_CONSTRAINTS_free() for example. -void * X509_get_ext_d2i(X509 *x, int nid, int *crit, int *idx); -void * X509_CRL_get_ext_d2i(X509_CRL *x, int nid, int *crit, int *idx); -void * X509_REVOKED_get_ext_d2i(X509_REVOKED *x, int nid, int *crit, int *idx); -void * X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx); - -These functions combine the operations of searching for extensions and -parsing them. They search a certificate, a CRL a CRL entry or a stack -of extensions respectively for extension whose NID is 'nid' and return -the parsed result of NULL if an error occurred. For example: - -BASIC_CONSTRAINTS *bs; -bs = X509_get_ext_d2i(cert, NID_basic_constraints, NULL, NULL); - -This will search for the basicConstraints extension and either return -it value or NULL. NULL can mean either the extension was not found, it -occurred more than once or it could not be parsed. - -If 'idx' is NULL then an extension is only parsed if it occurs precisely -once. This is standard behaviour because extensions normally cannot occur -more than once. If however more than one extension of the same type can -occur it can be used to parse successive extensions for example: - -int i; -void *ext; - -i = -1; -for(;;) { - ext = X509_get_ext_d2i(x, nid, crit, &idx); - if(ext == NULL) break; - /* Do something with ext */ -} - -If 'crit' is not NULL and the extension was found then the int it points to -is set to 1 for critical extensions and 0 for non critical. Therefore if the -function returns NULL but 'crit' is set to 0 or 1 then the extension was -found but it could not be parsed. - -The int pointed to by crit will be set to -1 if the extension was not found -and -2 if the extension occurred more than once (this will only happen if -idx is NULL). In both cases the function will return NULL. - 3. Generating extensions. An extension will typically be generated from a configuration file, or some |