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authorMichael Adam <obnox@samba.org>2008-07-17 00:53:13 +0200
committerMichael Adam <obnox@samba.org>2008-08-01 16:04:40 +0200
commit54d6ae09e268e169ee7f0f5ab02a465b030f4ba4 (patch)
treefcdb6505afd173acc3070aecbd35a3a5a7d48c47
parent7bd3ea0b6f53ff90af4483d5a27bb4986e8e1209 (diff)
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libnet_keytab: add a libnet_keytab_search() function
that searches and fetches an entry from a keytab file by principal and kvno. This code is by metze. Michael (This used to be commit a51a60066b6703fc4e5db3536903abf1cdaca885)
-rw-r--r--source3/libnet/libnet_keytab.c77
-rw-r--r--source3/libnet/libnet_proto.h4
2 files changed, 81 insertions, 0 deletions
diff --git a/source3/libnet/libnet_keytab.c b/source3/libnet/libnet_keytab.c
index 02c2b6f761..cec39273e3 100644
--- a/source3/libnet/libnet_keytab.c
+++ b/source3/libnet/libnet_keytab.c
@@ -141,4 +141,81 @@ krb5_error_code libnet_keytab_add(struct libnet_keytab_context *ctx)
#endif /* defined(ENCTYPE_ARCFOUR_HMAC) */
}
+struct libnet_keytab_entry *libnet_keytab_search(struct libnet_keytab_context *ctx,
+ const char *principal, int kvno,
+ TALLOC_CTX *mem_ctx)
+{
+ krb5_error_code ret = 0;
+ krb5_kt_cursor cursor;
+ krb5_keytab_entry kt_entry;
+ struct libnet_keytab_entry *entry = NULL;
+
+ ZERO_STRUCT(kt_entry);
+ ZERO_STRUCT(cursor);
+
+ ret = krb5_kt_start_seq_get(ctx->context, ctx->keytab, &cursor);
+ if (ret) {
+ return NULL;
+ }
+
+ while (krb5_kt_next_entry(ctx->context, ctx->keytab, &kt_entry, &cursor) == 0) {
+ char *princ_s = NULL;
+
+ if (kt_entry.vno != kvno) {
+ smb_krb5_kt_free_entry(ctx->context, &kt_entry);
+ continue;
+ }
+
+ ret = smb_krb5_unparse_name(ctx->context, kt_entry.principal, &princ_s);
+ if (ret) {
+ smb_krb5_kt_free_entry(ctx->context, &kt_entry);
+ continue;
+ }
+
+ if (strcmp(principal, princ_s) != 0) {
+ smb_krb5_kt_free_entry(ctx->context, &kt_entry);
+ SAFE_FREE(princ_s);
+ continue;
+ }
+
+ entry = talloc_zero(mem_ctx, struct libnet_keytab_entry);
+ if (!entry) {
+ smb_krb5_kt_free_entry(ctx->context, &kt_entry);
+ SAFE_FREE(princ_s);
+ break;
+ }
+
+ entry->name = talloc_strdup(entry, princ_s);
+ if (!entry->name) {
+ smb_krb5_kt_free_entry(ctx->context, &kt_entry);
+ SAFE_FREE(princ_s);
+ TALLOC_FREE(entry);
+ break;
+ }
+
+ entry->principal = talloc_strdup(entry, princ_s);
+ if (!entry->principal) {
+ smb_krb5_kt_free_entry(ctx->context, &kt_entry);
+ SAFE_FREE(princ_s);
+ TALLOC_FREE(entry);
+ break;
+ }
+
+ entry->password = data_blob_talloc(entry, kt_entry.key.contents, kt_entry.key.length);
+ if (!entry->password.data) {
+ smb_krb5_kt_free_entry(ctx->context, &kt_entry);
+ SAFE_FREE(princ_s);
+ TALLOC_FREE(entry);
+ break;
+ }
+
+ smb_krb5_kt_free_entry(ctx->context, &kt_entry);
+ SAFE_FREE(princ_s);
+ break;
+ }
+
+ krb5_kt_end_seq_get(ctx->context, ctx->keytab, &cursor);
+ return entry;
+}
+
#endif /* HAVE_KRB5 */
diff --git a/source3/libnet/libnet_proto.h b/source3/libnet/libnet_proto.h
index ddd730b1a8..65d37b0ab8 100644
--- a/source3/libnet/libnet_proto.h
+++ b/source3/libnet/libnet_proto.h
@@ -50,6 +50,10 @@ krb5_error_code libnet_keytab_init(TALLOC_CTX *mem_ctx,
const char *keytab_name,
struct libnet_keytab_context **ctx);
krb5_error_code libnet_keytab_add(struct libnet_keytab_context *ctx);
+
+struct libnet_keytab_entry *libnet_keytab_search(struct libnet_keytab_context *ctx,
+ const char *principal, int kvno,
+ TALLOC_CTX *mem_ctx);
#endif
/* The following definitions come from libnet/libnet_samsync.c */