OpenSSL X509_NAME_get_index_by_NID(3openssl)
NNNNAAAAMMMMEEEEX509_NAME_get_index_by_NID, X509_NAME_get_index_by_OBJ,
X509_NAME_get_entry, X509_NAME_entry_count,
X509_NAME_get_text_by_NID, X509_NAME_get_text_by_OBJ -
X509_NAME lookup and enumeration functions
SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS#include
int X509_NAME_get_index_by_NID(X509_NAME *name,int nid,int lastpos);
int X509_NAME_get_index_by_OBJ(X509_NAME *name,ASN1_OBJECT *obj, int lastpos);
int X509_NAME_entry_count(X509_NAME *name);
X509_NAME_ENTRY *X509_NAME_get_entry(X509_NAME *name, int loc);
int X509_NAME_get_text_by_NID(X509_NAME *name, int nid, char *buf,int len);
int X509_NAME_get_text_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, char *buf,int len);
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNNThese functions allow an XXXX555500009999_NNNNAAAAMMMMEEEE structure to be examined.
The XXXX555500009999_NNNNAAAAMMMMEEEE structure is the same as the NNNNaaaammmmeeee type defined
in RFC2459 (and elsewhere) and used for example in certificate subject and issuer names.X509_NAME_get_index_by_NID() and
X509_NAME_get_index_by_OBJ() retrieve the next index
matching nnnniiiidddd or oooobbbbjjjj after llllaaaassssttttppppoooossss. llllaaaassssttttppppoooossss should initiallybe set to -1. If there are no more entries -1 is returned.
X509_NAME_entry_count() returns the total number of entries
in nnnnaaaammmmeeee.X509_NAME_get_entry() retrieves the XXXX555500009999_NNNNAAAAMMMMEEEE_EEEENNNNTTTTRRRRYYYY from
nnnnaaaammmmeeee corresponding to index lllloooocccc. Acceptable values for llllooooccccrun from 0 to (X509_NAME_entry_count(name) - 1). The value
returned is an internal pointer which must not be freed.X509_NAME_get_text_by_NID(), X509_NAME_get_text_by_OBJ()
retrieve the "text" from the first entry in nnnnaaaammmmeeee whichmatches nnnniiiidddd or oooobbbbjjjj, if no such entry exists -1 is returned.
At most lllleeeennnn bytes will be written and the text written to bbbbuuuuffff will be null terminated. The length of the output string written is returned excluding the terminating null. If bbbbuuuuffff isthen the amount of space needed in bbbbuuuuffff (excluding the final null) is returned. NNNNOOOOTTTTEEEESSSS X509_NAME_get_text_by_NID() and X509_NAME_get_text_by_OBJ()
are legacy functions which have various limitations which make them of minimal use in practice. They can only find the first matching entry and will copy the contents of the field27/Mar/2010 Last change: 0.9.8o 1
OpenSSL X509_NAME_get_index_by_NID(3openssl)
verbatim: this can be highly confusing if the target is a muticharacter string type like a BMPString or a UTF8String.For a more general solution X509_NAME_get_index_by_NID() or
X509_NAME_get_index_by_OBJ() should be used followed by
X509_NAME_get_entry() on any matching indices and then the
various XXXX555500009999_NNNNAAAAMMMMEEEE_EEEENNNNTTTTRRRRYYYY utility functions on the result.
EEEEXXXXAAAAMMMMPPPPLLLLEEEESSSS Process all entries: int i;X509_NAME_ENTRY *e;
for (i = 0; i < X509_NAME_entry_count(nm); i++)
{e = X509_NAME_get_entry(nm, i);
/* Do something with e */ } Process all commonName entries: int loc;X509_NAME_ENTRY *e;
loc = -1;
for (;;) {lastpos = X509_NAME_get_index_by_NID(nm, NID_commonName, lastpos);
if (lastpos == -1)
break;e = X509_NAME_get_entry(nm, lastpos);
/* Do something with e */ } RRRREEEETTTTUUUURRRRNNNN VVVVAAAALLLLUUUUEEEESSSSX509_NAME_get_index_by_NID() and
X509_NAME_get_index_by_OBJ() return the index of the next
matching entry or -1 if not found.
X509_NAME_entry_count() returns the total number of entries.
X509_NAME_get_entry() returns an XXXX555500009999_NNNNAAAAMMMMEEEE pointer to the
requested entry or NNNNUUUULLLLLLLL if the index is invalid. SSSSEEEEEEEE AAAALLLLSSSSOOOOERR_get_error(3), d2i_X509_NAME(3)
HHHHIIIISSSSTTTTOOOORRRRYYYY TBA27/Mar/2010 Last change: 0.9.8o 2
OpenSSL X509_NAME_get_index_by_NID(3openssl)
27/Mar/2010 Last change: 0.9.8o 3