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-rw-r--r--source3/libads/kerberos_keytab.c249
1 files changed, 136 insertions, 113 deletions
diff --git a/source3/libads/kerberos_keytab.c b/source3/libads/kerberos_keytab.c
index 1daa1a92ad..a2a5a453ff 100644
--- a/source3/libads/kerberos_keytab.c
+++ b/source3/libads/kerberos_keytab.c
@@ -517,98 +517,109 @@ int ads_keytab_create_default(ADS_STRUCT *ads)
int i, found = 0;
char *sam_account_name, *upn;
char **oldEntries = NULL, *princ_s[26];
- TALLOC_CTX *ctx = NULL;
- fstring machine_name;
-
- memset(princ_s, '\0', sizeof(princ_s));
-
- fstrcpy( machine_name, global_myname() );
+ TALLOC_CTX *tmpctx = NULL;
+ char *machine_name;
/* these are the main ones we need */
-
- if ( (ret = ads_keytab_add_entry(ads, "host") ) != 0 ) {
- DEBUG(1,("ads_keytab_create_default: ads_keytab_add_entry failed while adding 'host'.\n"));
+ ret = ads_keytab_add_entry(ads, "host");
+ if (ret != 0) {
+ DEBUG(1, (__location__ ": ads_keytab_add_entry failed while "
+ "adding 'host' principal.\n"));
return ret;
}
-#if 0 /* don't create the CIFS/... keytab entries since no one except smbd
- really needs them and we will fall back to verifying against secrets.tdb */
-
- if ( (ret = ads_keytab_add_entry(ads, "cifs")) != 0 ) {
- DEBUG(1,("ads_keytab_create_default: ads_keytab_add_entry failed while adding 'cifs'.\n"));
+#if 0 /* don't create the CIFS/... keytab entries since no one except smbd
+ really needs them and we will fall back to verifying against
+ secrets.tdb */
+
+ ret = ads_keytab_add_entry(ads, "cifs"));
+ if (ret != 0 ) {
+ DEBUG(1, (__location__ ": ads_keytab_add_entry failed while "
+ "adding 'cifs'.\n"));
return ret;
}
#endif
- if ( (ctx = talloc_init("ads_keytab_create_default")) == NULL ) {
- DEBUG(0,("ads_keytab_create_default: talloc() failed!\n"));
- return -1;
+ memset(princ_s, '\0', sizeof(princ_s));
+ ZERO_STRUCT(kt_entry);
+ ZERO_STRUCT(cursor);
+
+ initialize_krb5_error_table();
+ ret = krb5_init_context(&context);
+ if (ret) {
+ DEBUG(1, (__location__ ": could not krb5_init_context: %s\n",
+ error_message(ret)));
+ return ret;
}
- /* now add the userPrincipalName and sAMAccountName entries */
+ tmpctx = talloc_init(__location__);
+ if (!tmpctx) {
+ DEBUG(0, (__location__ ": talloc_init() failed!\n"));
+ ret = -1;
+ goto done;
+ }
- if ( (sam_account_name = ads_get_samaccountname( ads, ctx, machine_name)) == NULL ) {
- DEBUG(0,("ads_keytab_add_entry: unable to determine machine account's name in AD!\n"));
- TALLOC_FREE( ctx );
- return -1;
+ machine_name = talloc_strdup(tmpctx, global_myname());
+ if (!machine_name) {
+ ret = -1;
+ goto done;
}
- /* upper case the sAMAccountName to make it easier for apps to
- know what case to use in the keytab file */
+ /* now add the userPrincipalName and sAMAccountName entries */
+ sam_account_name = ads_get_samaccountname(ads, tmpctx, machine_name);
+ if (!sam_account_name) {
+ DEBUG(0, (__location__ ": unable to determine machine "
+ "account's name in AD!\n"));
+ ret = -1;
+ goto done;
+ }
- strupper_m( sam_account_name );
+ /* upper case the sAMAccountName to make it easier for apps to
+ know what case to use in the keytab file */
+ strupper_m(sam_account_name);
- if ( (ret = ads_keytab_add_entry(ads, sam_account_name )) != 0 ) {
- DEBUG(1,("ads_keytab_create_default: ads_keytab_add_entry failed while adding sAMAccountName (%s)\n",
- sam_account_name));
- return ret;
+ ret = ads_keytab_add_entry(ads, sam_account_name);
+ if (ret != 0) {
+ DEBUG(1, (__location__ ": ads_keytab_add_entry() failed "
+ "while adding sAMAccountName (%s)\n",
+ sam_account_name));
+ goto done;
}
-
+
/* remember that not every machine account will have a upn */
-
- upn = ads_get_upn( ads, ctx, machine_name);
- if ( upn ) {
- if ( (ret = ads_keytab_add_entry(ads, upn)) != 0 ) {
- DEBUG(1,("ads_keytab_create_default: ads_keytab_add_entry failed while adding UPN (%s)\n",
- upn));
- TALLOC_FREE( ctx );
- return ret;
+ upn = ads_get_upn(ads, tmpctx, machine_name);
+ if (upn) {
+ ret = ads_keytab_add_entry(ads, upn);
+ if (ret != 0) {
+ DEBUG(1, (__location__ ": ads_keytab_add_entry() "
+ "failed while adding UPN (%s)\n", upn));
+ goto done;
}
}
- /* Now loop through the keytab and update any other existing entries... */
-
- kvno = (krb5_kvno) ads_get_machine_kvno(ads, machine_name);
+ /* Now loop through the keytab and update any other existing entries */
+ kvno = (krb5_kvno)ads_get_machine_kvno(ads, machine_name);
if (kvno == -1) {
- DEBUG(1,("ads_keytab_create_default: ads_get_machine_kvno failed to determine the system's kvno.\n"));
- TALLOC_FREE(ctx);
- return -1;
+ DEBUG(1, (__location__ ": ads_get_machine_kvno() failed to "
+ "determine the system's kvno.\n"));
+ goto done;
}
-
- DEBUG(3,("ads_keytab_create_default: Searching for keytab entries to "
- "preserve and update.\n"));
- ZERO_STRUCT(kt_entry);
- ZERO_STRUCT(cursor);
-
- initialize_krb5_error_table();
- ret = krb5_init_context(&context);
- if (ret) {
- DEBUG(1,("ads_keytab_create_default: could not krb5_init_context: %s\n",error_message(ret)));
- TALLOC_FREE(ctx);
- return ret;
- }
+ DEBUG(3, (__location__ ": Searching for keytab entries to preserve "
+ "and update.\n"));
ret = smb_krb5_open_keytab(context, NULL, True, &keytab);
if (ret) {
- DEBUG(1,("ads_keytab_create_default: smb_krb5_open_keytab failed (%s)\n", error_message(ret)));
+ DEBUG(1, (__location__ ": smb_krb5_open_keytab failed (%s)\n",
+ error_message(ret)));
goto done;
}
ret = krb5_kt_start_seq_get(context, keytab, &cursor);
if (ret != KRB5_KT_END && ret != ENOENT ) {
- while ((ret = krb5_kt_next_entry(context, keytab, &kt_entry, &cursor)) == 0) {
+ while ((ret = krb5_kt_next_entry(context, keytab,
+ &kt_entry, &cursor)) == 0) {
smb_krb5_kt_free_entry(context, &kt_entry);
ZERO_STRUCT(kt_entry);
found++;
@@ -618,93 +629,105 @@ int ads_keytab_create_default(ADS_STRUCT *ads)
ZERO_STRUCT(cursor);
/*
- * Hmmm. There is no "rewind" function for the keytab. This means we have a race condition
- * where someone else could add entries after we've counted them. Re-open asap to minimise
- * the race. JRA.
+ * Hmmm. There is no "rewind" function for the keytab. This means we
+ * have a race condition where someone else could add entries after
+ * we've counted them. Re-open asap to minimise the race. JRA.
*/
-
- DEBUG(3, ("ads_keytab_create_default: Found %d entries in the keytab.\n", found));
+ DEBUG(3, (__location__ ": Found %d entries in the keytab.\n", found));
if (!found) {
goto done;
}
- oldEntries = talloc_array(ctx, char *, found );
+
+ oldEntries = talloc_array(tmpctx, char *, found);
if (!oldEntries) {
- DEBUG(1,("ads_keytab_create_default: Failed to allocate space to store the old keytab entries (malloc failed?).\n"));
+ DEBUG(1, (__location__ ": Failed to allocate space to store "
+ "the old keytab entries (talloc failed?).\n"));
ret = -1;
goto done;
}
memset(oldEntries, '\0', found * sizeof(char *));
ret = krb5_kt_start_seq_get(context, keytab, &cursor);
- if (ret != KRB5_KT_END && ret != ENOENT ) {
- while (krb5_kt_next_entry(context, keytab, &kt_entry, &cursor) == 0) {
- if (kt_entry.vno != kvno) {
- char *ktprinc = NULL;
- char *p;
+ if (ret == KRB5_KT_END || ret == ENOENT) {
+ krb5_kt_end_seq_get(context, keytab, &cursor);
+ ZERO_STRUCT(cursor);
+ goto done;
+ }
- /* This returns a malloc'ed string in ktprinc. */
- ret = smb_krb5_unparse_name(oldEntries, context, kt_entry.principal, &ktprinc);
- if (ret) {
- DEBUG(1,("smb_krb5_unparse_name failed (%s)\n", error_message(ret)));
- goto done;
- }
- /*
- * From looking at the krb5 source they don't seem to take locale
- * or mb strings into account. Maybe this is because they assume utf8 ?
- * In this case we may need to convert from utf8 to mb charset here ? JRA.
- */
- p = strchr_m(ktprinc, '@');
- if (p) {
- *p = '\0';
- }
+ while (krb5_kt_next_entry(context, keytab, &kt_entry, &cursor) == 0) {
+ if (kt_entry.vno != kvno) {
+ char *ktprinc = NULL;
+ char *p;
- p = strchr_m(ktprinc, '/');
- if (p) {
- *p = '\0';
- }
- for (i = 0; i < found; i++) {
- if (!oldEntries[i]) {
- oldEntries[i] = ktprinc;
- break;
- }
- if (!strcmp(oldEntries[i], ktprinc)) {
- TALLOC_FREE(ktprinc);
- break;
- }
+ /* This returns a malloc'ed string in ktprinc. */
+ ret = smb_krb5_unparse_name(oldEntries, context,
+ kt_entry.principal,
+ &ktprinc);
+ if (ret) {
+ DEBUG(1, (__location__
+ ": smb_krb5_unparse_name failed "
+ "(%s)\n", error_message(ret)));
+ goto done;
+ }
+ /*
+ * From looking at the krb5 source they don't seem to
+ * take locale or mb strings into account.
+ * Maybe this is because they assume utf8 ?
+ * In this case we may need to convert from utf8 to
+ * mb charset here ? JRA.
+ */
+ p = strchr_m(ktprinc, '@');
+ if (p) {
+ *p = '\0';
+ }
+
+ p = strchr_m(ktprinc, '/');
+ if (p) {
+ *p = '\0';
+ }
+ for (i = 0; i < found; i++) {
+ if (!oldEntries[i]) {
+ oldEntries[i] = ktprinc;
+ break;
}
- if (i == found) {
+ if (!strcmp(oldEntries[i], ktprinc)) {
TALLOC_FREE(ktprinc);
+ break;
}
}
- smb_krb5_kt_free_entry(context, &kt_entry);
- ZERO_STRUCT(kt_entry);
- }
- ret = 0;
- for (i = 0; oldEntries[i]; i++) {
- ret |= ads_keytab_add_entry(ads, oldEntries[i]);
- TALLOC_FREE(oldEntries[i]);
+ if (i == found) {
+ TALLOC_FREE(ktprinc);
+ }
}
- krb5_kt_end_seq_get(context, keytab, &cursor);
+ smb_krb5_kt_free_entry(context, &kt_entry);
+ ZERO_STRUCT(kt_entry);
}
+ ret = 0;
+ for (i = 0; oldEntries[i]; i++) {
+ ret |= ads_keytab_add_entry(ads, oldEntries[i]);
+ TALLOC_FREE(oldEntries[i]);
+ }
+ krb5_kt_end_seq_get(context, keytab, &cursor);
ZERO_STRUCT(cursor);
done:
-
TALLOC_FREE(oldEntries);
- TALLOC_FREE(ctx);
+ TALLOC_FREE(tmpctx);
{
krb5_keytab_entry zero_kt_entry;
ZERO_STRUCT(zero_kt_entry);
- if (memcmp(&zero_kt_entry, &kt_entry, sizeof(krb5_keytab_entry))) {
+ if (memcmp(&zero_kt_entry, &kt_entry,
+ sizeof(krb5_keytab_entry))) {
smb_krb5_kt_free_entry(context, &kt_entry);
}
}
{
krb5_kt_cursor zero_csr;
ZERO_STRUCT(zero_csr);
- if ((memcmp(&cursor, &zero_csr, sizeof(krb5_kt_cursor)) != 0) && keytab) {
- krb5_kt_end_seq_get(context, keytab, &cursor);
+ if ((memcmp(&cursor, &zero_csr,
+ sizeof(krb5_kt_cursor)) != 0) && keytab) {
+ krb5_kt_end_seq_get(context, keytab, &cursor);
}
}
if (keytab) {
generated by cgit (git 2.34.1) at 2024-11-27 20:38:05 +0000