#include "includes.h"
#ifdef HAVE_KRB5
static krb5_error_code
kerb_prompter(krb5_context ctx, void *data,
const char *name,
const char *banner,
int num_prompts,
krb5_prompt prompts[])
{
if (num_prompts == 0) return 0;
memset(prompts[0].reply->data, 0, prompts[0].reply->length);
if (prompts[0].reply->length > 0) {
if (data) {
strncpy(prompts[0].reply->data, data, prompts[0].reply->length-1);
prompts[0].reply->length = strlen(prompts[0].reply->data);
} else {
prompts[0].reply->length = 0;
}
}
return 0;
}
int kerberos_kinit_password(const char *principal, const char *password, int time_offset)
{
krb5_context ctx;
krb5_error_code code = 0;
krb5_ccache cc;
krb5_principal me;
krb5_creds my_creds;
if ((code = krb5_init_context(&ctx)))
return code;
if (time_offset != 0) {
krb5_set_real_time(ctx, time(NULL) + time_offset, 0);
}
if ((code = krb5_cc_default(ctx, &cc))) {
krb5_free_context(ctx);
return code;
}
if ((code = krb5_parse_name(ctx, principal, &me))) {
krb5_free_context(ctx);
return code;
}
if ((code = krb5_get_init_creds_password(ctx, &my_creds, me, NULL,
kerb_prompter,
password, 0, NULL, NULL))) {
krb5_free_principal(ctx, me);
krb5_free_context(ctx);
return code;
}
if ((code = krb5_cc_initialize(ctx, cc, me))) {
krb5_free_cred_contents(ctx, &my_creds);
krb5_free_principal(ctx, me);
krb5_free_context(ctx);
return code;
}
if ((code = krb5_cc_store_cred(ctx, cc, &my_creds))) {
krb5_cc_close(ctx, cc);
krb5_free_cred_contents(ctx, &my_creds);
krb5_free_principal(ctx, me);
krb5_free_context(ctx);
return code;
}
krb5_cc_close(ctx, cc);
krb5_free_cred_contents(ctx, &my_creds);
krb5_free_principal(ctx, me);
krb5_free_context(ctx);
return 0;
}
int ads_kinit_password(ADS_STRUCT *ads)
{
char *s;
int ret;
if (asprintf(&s, "%s@%s", ads->auth.user_name, ads->auth.realm) == -1) {
return KRB5_CC_NOMEM;
}
if (!ads->auth.password) {
return KRB5_LIBOS_CANTREADPWD;
}
ret = kerberos_kinit_password(s, ads->auth.password, ads->auth.time_offset);
if (ret) {
DEBUG(0,("kerberos_kinit_password %s failed: %s\n",
s, error_message(ret)));
}
free(s);
return ret;
}
#endif