DN parsing programs (NSS, openldap)

ldapdn.c

#include <stdio.h>
#include <stdlib.h>
#include <ldap.h>

int main(int argc, char **argv) {
    if (argc < 2) {
        printf("Usage!\n");
        exit(1);
    }

    LDAPDN dn = NULL;
    if (LDAP_SUCCESS != ldap_str2dn(argv[1], &dn, LDAP_DN_FORMAT_LDAPV3)) {
        printf("Failed to parse DN\n");
        exit(1);
    }
    for (int i = 0; dn[i] != NULL; i++) {
        LDAPRDN rdn = dn[i];
        printf("RDN %d\n", i);
        for (int j = 0; rdn[j] != NULL; j++) {
            LDAPAVA *ava = rdn[j];
            printf(" AVA %d %s=%s\n", j, ava->la_attr.bv_val, ava->la_value.bv_val);
        }
    }
}

nss-dnparse.c

#include <stdio.h>
#include <stdlib.h>

#include <nss3/nss.h>
#include <nss3/cert.h>

int main(int argc, char **argv) {
    if (argc < 2) {
        fprintf(stderr, "must give stringified dn arg\n");
        exit(1);
    }

    if (NSS_NoDB_Init(NULL) != SECSuccess) {
        fprintf(stderr, "failed to init nss\n");
        exit(1);
    }

    CERTName *dn = CERT_AsciiToName(argv[1]);
    if (dn == NULL) {
        fprintf(stderr, "failed to parse dn\n");
        exit(1);
    }

    printf("Parsed name (as stringified by NSS):\n");
    printf("  %s\n", CERT_NameToAscii(dn));

    return 0;
}