res_config_mysql: Fix broken column type checking

MySQL configuration engine contains a bug in require_mysql(). This
function is used for column type checking in tables. This bug only
affects DATETIME, DATE and FLOAT types.

It came from mixing the first condition (switch-case-like
if/then/else), to check the expected column type, with the second
condition, to check the actual column type against the expected column
type. Both conditions must be checked separately in order to avoid the
execution of the wrong block.

ASTERISK-18252 #comment This patch might fix the issue
Reported by: Gareth Blades

ASTERISK-25041 #close
Reported by: Alexandre Fournier
Tested by: Alexandre Fournier

Change-Id: I0b8bf7e68ab938be8e6525a249260cb648cb0bfa

diff --git a/addons/res_config_mysql.c b/addons/res_config_mysql.c
index 299fe5619a6f99bd3002b8e4dcf176350a3f2a79..76bdeed5c26128fb46c1e28c05c2bbcd50dd6f92 100644 (file)
--- a/addons/res_config_mysql.c
+++ b/addons/res_config_mysql.c
@@ -1202,38 +1202,44 @@ static int require_mysql(const char *database, const char *tablename, va_list ap
                                                        PICK_WHICH_ALTER_ACTION(bigint)
                                                }
                                        }
-                               } else if (strncmp(column->type, "float", 5) == 0 && !ast_rq_is_int(type) && type != RQ_FLOAT) {
-                                       if (table->database->requirements == RQ_WARN) {
-                                               ast_log(LOG_WARNING, "Realtime table %s@%s: Column %s cannot be a %s\n", tablename, database, column->name, column->type);
-                                               res = -1;
-                                       } else if (table->database->requirements == RQ_CREATECLOSE && modify_mysql(database, tablename, column, type, size) == 0) {
-                                               table_altered = 1;
-                                       } else if (table->database->requirements == RQ_CREATECHAR && modify_mysql(database, tablename, column, RQ_CHAR, size) == 0) {
-                                               table_altered = 1;
-                                       } else {
-                                               res = -1;
+                               } else if (strncmp(column->type, "float", 5) == 0) {
+                                       if (!ast_rq_is_int(type) && type != RQ_FLOAT) {
+                                               if (table->database->requirements == RQ_WARN) {
+                                                       ast_log(LOG_WARNING, "Realtime table %s@%s: Column %s cannot be a %s\n", tablename, database, column->name, column->type);
+                                                       res = -1;
+                                               } else if (table->database->requirements == RQ_CREATECLOSE && modify_mysql(database, tablename, column, type, size) == 0) {
+                                                       table_altered = 1;
+                                               } else if (table->database->requirements == RQ_CREATECHAR && modify_mysql(database, tablename, column, RQ_CHAR, size) == 0) {
+                                                       table_altered = 1;
+                                               } else {
+                                                       res = -1;
+                                               }
                                        }
-                               } else if ((strncmp(column->type, "datetime", 8) == 0 || strncmp(column->type, "timestamp", 9) == 0) && type != RQ_DATETIME) {
-                                       if (table->database->requirements == RQ_WARN) {
-                                               ast_log(LOG_WARNING, "Realtime table %s@%s: Column %s cannot be a %s\n", tablename, database, column->name, column->type);
-                                               res = -1;
-                                       } else if (table->database->requirements == RQ_CREATECLOSE && modify_mysql(database, tablename, column, type, size) == 0) {
-                                               table_altered = 1;
-                                       } else if (table->database->requirements == RQ_CREATECHAR && modify_mysql(database, tablename, column, RQ_CHAR, size) == 0) {
-                                               table_altered = 1;
-                                       } else {
-                                               res = -1;
+                               } else if (strncmp(column->type, "datetime", 8) == 0 || strncmp(column->type, "timestamp", 9) == 0) {
+                                       if (type != RQ_DATETIME) {
+                                               if (table->database->requirements == RQ_WARN) {
+                                                       ast_log(LOG_WARNING, "Realtime table %s@%s: Column %s cannot be a %s\n", tablename, database, column->name, column->type);
+                                                       res = -1;
+                                               } else if (table->database->requirements == RQ_CREATECLOSE && modify_mysql(database, tablename, column, type, size) == 0) {
+                                                       table_altered = 1;
+                                               } else if (table->database->requirements == RQ_CREATECHAR && modify_mysql(database, tablename, column, RQ_CHAR, size) == 0) {
+                                                       table_altered = 1;
+                                               } else {
+                                                       res = -1;
+                                               }
                                        }
-                               } else if ((strncmp(column->type, "date", 4) == 0) && type != RQ_DATE) {
-                                       if (table->database->requirements == RQ_WARN) {
-                                               ast_log(LOG_WARNING, "Realtime table %s@%s: Column %s cannot be a %s\n", tablename, database, column->name, column->type);
-                                               res = -1;
-                                       } else if (table->database->requirements == RQ_CREATECLOSE && modify_mysql(database, tablename, column, type, size) == 0) {
-                                               table_altered = 1;
-                                       } else if (table->database->requirements == RQ_CREATECHAR && modify_mysql(database, tablename, column, RQ_CHAR, size) == 0) {
-                                               table_altered = 1;
-                                       } else {
-                                               res = -1;
+                               } else if (strncmp(column->type, "date", 4) == 0) {
+                                       if (type != RQ_DATE) {
+                                               if (table->database->requirements == RQ_WARN) {
+                                                       ast_log(LOG_WARNING, "Realtime table %s@%s: Column %s cannot be a %s\n", tablename, database, column->name, column->type);
+                                                       res = -1;
+                                               } else if (table->database->requirements == RQ_CREATECLOSE && modify_mysql(database, tablename, column, type, size) == 0) {
+                                                       table_altered = 1;
+                                               } else if (table->database->requirements == RQ_CREATECHAR && modify_mysql(database, tablename, column, RQ_CHAR, size) == 0) {
+                                                       table_altered = 1;
+                                               } else {
+                                                       res = -1;
+                                               }
                                        }
                                } else { /* Other, possibly unsupported types? */
                                        if (table->database->requirements == RQ_WARN) {