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SCRUM: Main change for Secure connection handling. Still needs some more coding. Commit

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done for merge with newer version of code.
This commit is contained in:
peter@mysql.com
2002-11-24 17:07:53 +03:00
parent 961317599e
commit 35ccfd0b42
17 changed files with 950 additions and 246 deletions
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92
libmysql/libmysql.c
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@ -67,7 +67,7 @@ ulong net_write_timeout= NET_WRITE_TIMEOUT;
#define CLIENT_CAPABILITIES (CLIENT_LONG_PASSWORD | CLIENT_LONG_FLAG \
| CLIENT_LOCAL_FILES | CLIENT_TRANSACTIONS \
| CLIENT_PROTOCOL_41)
| CLIENT_PROTOCOL_41 | CLIENT_SECURE_CONNECTION)
#ifdef __WIN__
@ -1585,6 +1585,7 @@ mysql_real_connect(MYSQL *mysql,const char *host, const char *user,
{
char buff[NAME_LEN+USERNAME_LENGTH+100],charset_name_buff[16];
char *end,*host_info,*charset_name;
char password_hash[20]; /* Used for tmp storage of stage1 hash */
my_socket sock;
uint32 ip_addr;
struct sockaddr_in sock_addr;
@ -1789,7 +1790,7 @@ mysql_real_connect(MYSQL *mysql,const char *host, const char *user,
if ((pkt_length=net_safe_read(mysql)) == packet_error)
goto error;
/* Check if version of protocoll matches current one */
/* Check if version of protocol matches current one */
mysql->protocol_version= net->read_pos[0];
DBUG_DUMP("packet",(char*) net->read_pos,10);
@ -1855,7 +1856,7 @@ mysql_real_connect(MYSQL *mysql,const char *host, const char *user,
}
goto error;
}
/* Save connection information */
if (!user) user="";
if (!passwd) passwd="";
@ -1962,32 +1963,105 @@ mysql_real_connect(MYSQL *mysql,const char *host, const char *user,
DBUG_PRINT("info",("Server version = '%s' capabilites: %ld status: %d client_flag: %d",
mysql->server_version,mysql->server_capabilities,
mysql->server_status, client_flag));
int3store(buff+2,max_allowed_packet);
if (user && user[0])
strmake(buff+5,user,32); /* Max user name */
else
read_user_name((char*) buff+5);
/* We have to handle different version of handshake here */
#ifdef _CUSTOMCONFIG_
#include "_cust_libmysql.h";
#endif
DBUG_PRINT("info",("user: %s",buff+5));
end=scramble(strend(buff+5)+1, mysql->scramble_buff, passwd,
(my_bool) (mysql->protocol_version == 9));
/*
We always start with old type handshake the only difference is message sent
If server handles secure connection type we'll not send the real scramble
*/
if (mysql->server_capabilities & CLIENT_SECURE_CONNECTION)
{
if (passwd[0])
{
/* Use something for not empty password not to match it against empty one */
end=scramble(strend(buff+5)+1, mysql->scramble_buff,"~MySQL#!",
(my_bool) (mysql->protocol_version == 9));
}
else /* For empty password*/
{
end=strend(buff+5)+1;
*end=0; /* Store zero length scramble */
}
}
/* Real scramble is sent only for servers. This is to be blocked by option */
else
end=scramble(strend(buff+5)+1, mysql->scramble_buff, passwd,
(my_bool) (mysql->protocol_version == 9));
/* Add database if needed */
if (db && (mysql->server_capabilities & CLIENT_CONNECT_WITH_DB))
{
end=strmake(end+1,db,NAME_LEN);
end=strmake(end+1,db,NAME_LEN);
mysql->db=my_strdup(db,MYF(MY_WME));
db=0;
}
/* Write authentication package */
if (my_net_write(net,buff,(ulong) (end-buff)) || net_flush(net))
{
net->last_errno= CR_SERVER_LOST;
net->last_errno= CR_SERVER_LOST;
strmov(net->last_error,ER(net->last_errno));
goto error;
}
if (net_safe_read(mysql) == packet_error)
/* We shall only query sever if it expect us to do so */
if ( (pkt_length=net_safe_read(mysql)) == packet_error)
goto error;
if (mysql->server_capabilities & CLIENT_SECURE_CONNECTION)
{
/* This should basically always happen with new server unless empty password */
if (pkt_length==24) /* We have new hash back */
{
/* Old passwords will have zero at the first byte of hash */
if (net->read_pos[0])
{
/* Build full password hash as it is required to decode scramble */
password_hash_stage1(buff, passwd);
/* Store copy as we'll need it later */
memcpy(password_hash,buff,20);
/* Finally hash complete password using hash we got from server */
password_hash_stage2(password_hash,net->read_pos);
/* Decypt and store scramble 4 = hash for stage2 */
password_crypt(net->read_pos+4,mysql->scramble_buff,password_hash,20);
mysql->scramble_buff[20]=0;
/* Encode scramble with password. Recycle buffer */
password_crypt(mysql->scramble_buff,buff,buff,20);
}
else
{
/* Create password to decode scramble */
create_key_from_old_password(passwd,password_hash);
/* Decypt and store scramble 4 = hash for stage2 */
password_crypt(net->read_pos+4,mysql->scramble_buff,password_hash,20);
mysql->scramble_buff[20]=0;
/* Finally scramble decoded scramble with password */
scramble(buff, mysql->scramble_buff, passwd,
(my_bool) (mysql->protocol_version == 9));
}
/* Write second package of authentication */
if (my_net_write(net,buff,20) || net_flush(net))
{
net->last_errno= CR_SERVER_LOST;
strmov(net->last_error,ER(net->last_errno));
goto error;
}
/* Read What server thinks about out new auth message report */
if (net_safe_read(mysql) == packet_error)
goto error;
}
}
/* End of authentication part of handshake */
if (client_flag & CLIENT_COMPRESS) /* We will use compression */
net->compress=1;
if (db && mysql_select_db(mysql,db))