fjernet heng ved forsøk på drop av ikke-eksisterende databaser.

fjernet heng ved forsøk på create av eksisterende databaser.
fjernet mulighet for buffer overflows i databasenavnet.
This commit is contained in:
Lasse Karstensen 2004-11-16 20:56:51 +00:00
parent 05db606260
commit bcf7ceab37
1 changed files with 41 additions and 23 deletions

View File

@ -1,5 +1,5 @@
/*
* @(#) $Header: /tmp/cvs/mysql-admutils/mysql-dbadm.c,v 1.11 2003-04-08 18:31:53 lkarsten Exp $
* @(#) $Header: /tmp/cvs/mysql-admutils/mysql-dbadm.c,v 1.12 2004-11-16 20:56:51 lkarsten Exp $
*
* mysql-dbadm.c
*
@ -87,9 +87,19 @@ usage()
int
create(MYSQL *pmysql, char *db)
{
if (mysql_create_db(pmysql, db))
return dberror(pmysql, "Cannot create database '%s'.", db);
// hvis man forsøker å dra mysql_create_db() på en database som
// allerede finnes, så henger bare hele sql-kallet. Vi må derfor
// forsøke å selecte databasen først. Ettersom man alltid er root,
// går jo dette vanligvis bra.
// finner ut om denne finnes fra før.
if (!mysql_select_db(pmysql, db)) {
return dberror(pmysql, "Database '%s' already exists.", db);
}
mysql_select_db(pmysql, "mysql");
// oppretter databasen.
if (mysql_create_db(pmysql, db)) {
return dberror(pmysql, "Cannot create database '%s'.", db);
}
fprintf(stderr, "Database '%s' created.\n", db);
return 0;
}
@ -104,6 +114,12 @@ drop(MYSQL *pmysql, char *db)
if (mysql_query(pmysql, query))
dberror(pmysql, "Failed to delete permissions for database '%s'.", db);
if (mysql_select_db(pmysql, db)) {
dberror(pmysql, "Database '%s' doesn't exists.", db);
return 0;
}
mysql_select_db(pmysql, "mysql");
if (mysql_drop_db(pmysql, db))
return dberror(pmysql, "Cannot drop database '%s'.", db);
@ -406,6 +422,7 @@ main(int argc, char *argv[])
enum { c_create, c_drop, c_editperm, c_show } command;
MYSQL mysql;
char **dblist, **p;
char *db;
program_name = argv[0];
@ -464,37 +481,38 @@ main(int argc, char *argv[])
}
free(dblist);
}
else
{
else {
db = malloc(64);
/* for each supplied database name, perform the requested action */
for (i = 2; i < argc; i++)
{
if (! (owner(argv[i]) || member(argv[i])))
{
dberror(NULL, "You are not the owner of '%s'. Skipping.",
argv[i]);
continue;
}
for (i = 2; i < argc; i++) {
// HE HE
strncpy(db, argv[i], 32);
db[33] = '\0';
switch (command)
{
if (! (owner(db) || member(db))) {
dberror(NULL, "You are not the owner of '%s'. Skipping.",
db);
continue;
}
switch (command) {
case c_create:
create(&mysql, argv[i]);
create(&mysql, db);
break;
case c_drop:
drop(&mysql, argv[i]);
drop(&mysql, db);
break;
case c_editperm:
editperm(&mysql, argv[i]);
editperm(&mysql, db);
break;
case c_show:
show(&mysql, argv[i]);
show(&mysql, db);
break;
default:
return dberror(NULL, "This point should never be reached!");
}
}
}
}
} // for
} // else
mysql_reload(&mysql);
mysql_close(&mysql);