Attempt to fix SQLite seg fault when listing fields

diff --git a/bacula/src/cats/sqlite.c b/bacula/src/cats/sqlite.c
index 003036647ad80cae773829e8782a318b7a64d4af..946a87e8fa80937b8195b3981191792f62c6b857 100644 (file)
--- a/bacula/src/cats/sqlite.c
+++ b/bacula/src/cats/sqlite.c
@@ -1,7 +1,7 @@
 /*
    Bacula® - The Network Backup Solution
 
-   Copyright (C) 2000-2007 Free Software Foundation Europe e.V.
+   Copyright (C) 2000-2009 Free Software Foundation Europe e.V.
 
    The main author of Bacula is Kern Sibbald, with contributions from
    many others, a complete list can be found in the file AUTHORS.
@@ -356,7 +356,7 @@ bool db_sql_query(B_DB *mdb, const char *query, DB_RESULT_HANDLER *result_handle
    rh_data.result_handler = result_handler;
    rh_data.ctx = ctx;
    stat = sqlite_exec(mdb->db, query, sqlite_result, (void *)&rh_data, &mdb->sqlite_errmsg);
-   if (stat != 0) {
+   if (stat != SQLITE_OK) {
       Mmsg(mdb->errmsg, _("Query failed: %s: ERR=%s\n"), query, sql_strerror(mdb));
       db_unlock(mdb);
       return false;
@@ -383,14 +383,17 @@ int my_sqlite_query(B_DB *mdb, const char *cmd)
    }
    stat = sqlite_get_table(mdb->db, (char *)cmd, &mdb->result, &mdb->nrow, &mdb->ncolumn,
             &mdb->sqlite_errmsg);
-   mdb->row = 0;                      /* row fetched */
+   mdb->row = 0;                      /* no row fetched yet */
+   if (stat != 0) {                   /* something went wrong */
+      mdb->nrow = mdb->ncolumn = 0;
+   }
    return stat;
 }
 
 /* Fetch one row at a time */
 SQL_ROW my_sqlite_fetch_row(B_DB *mdb)
 {
-   if (mdb->row >= mdb->nrow) {
+   if (!mdb->result || (mdb->row >= mdb->nrow)) {
       return NULL;
    }
    mdb->row++;
@@ -425,6 +428,7 @@ void my_sqlite_field_seek(B_DB *mdb, int field)
 {
    int i, j;
    if (mdb->result == NULL) {
+      mdb->field = 0;
       return;
    }
    /* On first call, set up the fields */
@@ -451,7 +455,9 @@ void my_sqlite_field_seek(B_DB *mdb, int field)
       }
       mdb->fields_defined = true;
    }
-   if (field > sql_num_fields(mdb) - 1) {
+   if (sql_num_fields(mdb) <= 0) {
+      field = 0;
+   } else if (field > sql_num_fields(mdb) - 1) {
       field = sql_num_fields(mdb) - 1;
     }
     mdb->field = field;