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author | Luke Leighton <lkcl@samba.org> | 1999-03-01 16:31:14 +0000 |
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committer | Luke Leighton <lkcl@samba.org> | 1999-03-01 16:31:14 +0000 |
commit | 236cea4efa18094c3445bee310195ac12b6073ee (patch) | |
tree | f293428793d27aa60705e3a664b1fa5b0b5b4b21 /source3/passdb/mysqlpass.c | |
parent | 2dd4c985c00c71c19c5360bb13c338f477cfd91a (diff) | |
download | samba-236cea4efa18094c3445bee310195ac12b6073ee.tar.gz samba-236cea4efa18094c3445bee310195ac12b6073ee.tar.bz2 samba-236cea4efa18094c3445bee310195ac12b6073ee.zip |
Benjamin Kuit's MYSQL SAM Database implementation.
Copyright (C) Benjamin Kuit <bj@mcs.uts.edu.au> 1999.
(This used to be commit fdf61e1dabc2c977ee5cf1e9d60e3380f19840da)
Diffstat (limited to 'source3/passdb/mysqlpass.c')
-rw-r--r-- | source3/passdb/mysqlpass.c | 668 |
1 files changed, 668 insertions, 0 deletions
diff --git a/source3/passdb/mysqlpass.c b/source3/passdb/mysqlpass.c new file mode 100644 index 0000000000..90a6011692 --- /dev/null +++ b/source3/passdb/mysqlpass.c @@ -0,0 +1,668 @@ +/* + * Unix SMB/Netbios implementation. + * Version 1.9. + * Samba MYSQL SAM Database, by Benjamin Kuit. + * Copyright (C) Benjamin Kuit 1999, + * Copyright (C) Andrew Tridgell 1992-1999, + * Copyright (C) Luke Kenneth Casson Leighton 1996-1998, + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#if defined(WITH_MYSQL) || defined(WITH_MYSQLSAM) + +#include "includes.h" +#include <mysql.h> + +extern int DEBUGLEVEL; + +#define UNIX_NAME(row) ((*row)[0]) +#define UNIX_UID(row) ((*row)[1]) +#define NT_NAME(row) ((*row)[2]) +#define RID(row) ((*row)[3]) +#define LM_HASH(row) ((*row)[4]) +#define NT_HASH(row) ((*row)[5]) +#define FLAGS(row) ((*row)[6]) +#define CHANGE_TIME(row) ((*row)[7]) + +void *mysql_fill_smb_passwd( MYSQL_ROW *row ); + +typedef void *(*mysql_fill_func)( MYSQL_ROW * ); +#define FILL_SMB mysql_fill_smb_passwd + +void *mysql_startpwent(BOOL update); +void mysql_endpwent(void *vp); +SMB_BIG_UINT mysql_getpwpos(void *vp); +BOOL mysql_setpwpos(void *vp, SMB_BIG_UINT pos); +void *mysql_fill_smb_passwd( MYSQL_ROW *row ); +MYSQL_ROW *mysql_getpwent(void *vp); +void *mysql_fetch_passwd( mysql_fill_func filler, char *where ); +void *mysql_getpwuid( mysql_fill_func filler, uid_t uid ); +void *mysql_getpwnam( mysql_fill_func filler, char *field, const char *name ); +int mysql_db_lock_connect( MYSQL *handle ); +BOOL mysql_add_smb( MYSQL *handle, struct smb_passwd *smb ); +BOOL mysql_mod_smb( MYSQL *handle, struct smb_passwd *smb, BOOL override ); +BOOL mysql_del_smb( MYSQL *handle, char *unix_name ); + +static fstring mysql_table = { 0 }; + +struct mysql_struct { + MYSQL handle; + MYSQL_RES *result; + uint current_row; +}; +typedef struct mysql_struct mysql_ctrl; + +static char *mysql_retrieve_password(char *passfile) { + static fstring pass; + static time_t last_checked = (time_t)0; + static char pass_chars[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890!@#$%^&*()_-+=|~`\\{}[]:;\"'?/>.<,"; + fstring temppass; + FILE *filep; + int length; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + if ( passfile == NULL ) { + pass[0]=0; + return pass; + } + + if ( time(NULL) - last_checked <= 60 ) { + return pass; + } + + if ( file_modtime(passfile) < last_checked ) { + return pass; + } + + filep = sys_fopen(passfile,"r"); + + if ( filep == NULL ) { + return pass; + } + + memset(temppass,0,sizeof(temppass)); + + if ( fgets( temppass, sizeof(temppass)-1, filep) == NULL ) { + fclose(filep); + return pass; + } + + fclose(filep); + + length = strspn( temppass, pass_chars ); + temppass[length<sizeof(temppass)-1?length:sizeof(temppass)-1] = '\0'; + + fstrcpy( pass, temppass ); + + last_checked = time(NULL); + + return pass; +} + +static int mysql_db_connect( MYSQL *handle ) { + char *password; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + password = mysql_retrieve_password(lp_mysql_passfile()); + + if ( !mysql_connect(handle, lp_mysql_host(), lp_mysql_user(), password) ) { + DEBUG(0,("mysql_connect: %s\n",mysql_error(handle))); + return -1; + } + + if ( mysql_select_db( handle, lp_mysql_db()) ) { + DEBUG(0,("mysql_connect: %s\n",mysql_error(handle))); + mysql_close(handle); + return -1; + } + + fstrcpy(mysql_table,lp_mysql_table()); + + return 0; +} + +static int mysql_lock_table( MYSQL *handle, BOOL write_access ) { + fstring query; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + slprintf( query, sizeof(query), "lock tables %s %s", mysql_table, write_access==True?"write":"read"); + + if ( mysql_query( handle, query ) ) { + DEBUG(0,("Cannot get lock: %s: %s\n",query,mysql_error(handle) )); + return -1; + } + + return 0; +} + +int mysql_db_lock_connect( MYSQL *handle ) { + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + if ( mysql_db_connect( handle ) ) { + return -1; + } + + if ( mysql_lock_table( handle, True ) ) { + mysql_close( handle ); + return -1; + } + + return 0; +} + +static MYSQL_RES *mysql_select_results( MYSQL *handle, char *selection ) { + MYSQL_RES *result; + pstring query; + int query_length; + char select[] = "select "; + char where[] = " where "; + char from[] = " from "; + char mysql_query_string[] = "unix_name, unix_uid, nt_name, user_rid, smb_passwd, smb_nt_passwd, acct_ctrl, pass_last_set_time"; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + query_length = sizeof( select ) + sizeof( mysql_query_string ) + sizeof(from ) + strlen( mysql_table ); + + if ( selection != NULL && *selection != '\0' ) { + query_length += sizeof( where ) + strlen( selection ); + } + + if ( query_length >= sizeof( query ) ) { + DEBUG(0,("Query string too long\n")); + return NULL; + } + + pstrcpy( query, select); + pstrcat( query, mysql_query_string ); + pstrcat( query, from ); + pstrcat( query, mysql_table ); + + if ( selection != NULL && *selection != '\0' ) { + pstrcat( query, where ); + pstrcat( query, selection ); + } + + DEBUG(5,("mysql> %s\n",query)); + if ( mysql_query( handle, query ) ) { + DEBUG(0,("%s: %s\n", query, mysql_error(handle) )); + return NULL; + } + + result = mysql_store_result( handle ); + + if ( mysql_num_fields( result ) != 8 ) { + DEBUG(0,("mysql_num_result = %d (!=8)\n",mysql_num_fields( result ))); + return NULL; + } + + if ( result == NULL ) { + DEBUG(0,("mysql_store_result: %s\n",mysql_error(handle))); + return NULL; + } + + return result; +} + +void *mysql_startpwent( BOOL update ) { + mysql_ctrl *mysql; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + mysql = (mysql_ctrl *)malloc( sizeof(mysql_ctrl) ); + if ( mysql == NULL ) { + DEBUG(0,("malloc: Out of memory\n")); + return NULL; + } + + memset( mysql, 0, sizeof(mysql_ctrl) ); + + if ( mysql_db_connect( &mysql->handle ) ) { + return NULL; + } + + if ( mysql_lock_table( &mysql->handle, update ) ) { + mysql_close( &mysql->handle ); + return NULL; + } + + mysql->result = mysql_select_results( &mysql->handle, NULL ); + + if ( mysql->result == NULL ) { + mysql_close( &mysql->handle ); + return NULL; + } + + mysql->current_row = 0; + + return (void*)mysql; +} + +void mysql_endpwent( void *ptr ) { + mysql_ctrl *handle; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + handle = (mysql_ctrl *)ptr; + + mysql_free_result( handle->result ); + + mysql_close( &handle->handle ); + + free( handle ); +} + +SMB_BIG_UINT mysql_getpwpos(void *vp) { + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + return ((mysql_ctrl *)vp)->current_row; +} + +BOOL mysql_setpwpos(void *vp, SMB_BIG_UINT pos) { + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + mysql_data_seek( ((mysql_ctrl*)vp)->result, (uint)pos ); +((mysql_ctrl *)vp)->current_row=(uint)pos; + + return True; +} + +static void quote_hash( char *target, unsigned char *passwd ) { + char hex[] = "0123456789ABCDEF"; + int i; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + if ( passwd == NULL ) { + fstrcpy(target,"NULL"); + } + else { + target[0]='\''; + for (i=0;i<32;i++) { + target[i+1] = hex[(passwd[i>>1]>>(((~i)&1)<<2))&15]; + } + target[33] = '\''; + target[34] = '\0'; + } +} + +static unsigned char *decode_hash( char *hash, unsigned char *buffer ) { + char hex[] = "0123456789ABCDEF"; + int pos, v1, v2; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + if ( hash == NULL ) { + return NULL; + } + + for (pos=0;pos<16;pos++) { + for( v1 = 0; v1 < sizeof(hex) && hash[0] != hex[v1]; v1++ ); + for( v2 = 0; v2 < sizeof(hex) && hash[1] != hex[v2]; v2++ ); + + if ( v1 == sizeof(hex) || v2 == sizeof(hex) ) { + return NULL; + } + + buffer[pos] = (v1<<4)|v2; + hash += 2; + } + + return buffer; +} + +void *mysql_fill_smb_passwd( MYSQL_ROW *row ) { + static struct smb_passwd pw_buf; + static fstring unix_name; + static fstring nt_name; + static unsigned char smbpwd[16]; + static unsigned char smbntpwd[16]; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + pwdb_init_smb(&pw_buf); + + fstrcpy( unix_name, UNIX_NAME(row) ); + pw_buf.unix_name = unix_name; + pw_buf.unix_uid = get_number( UNIX_UID(row) ); + + if ( NT_NAME(row) != NULL ) { + fstrcpy( nt_name, NT_NAME(row) ); + pw_buf.nt_name = nt_name; + } + + if ( RID(row) != NULL ) { + pw_buf.user_rid = get_number( RID(row) ); + } + + pw_buf.smb_passwd = decode_hash( LM_HASH(row), smbpwd ); + if ( !pw_buf.smb_passwd ) { + DEBUG(4, ("entry invalidated for unix user %s\n", unix_name )); + return NULL; + } + + pw_buf.smb_nt_passwd = decode_hash( NT_HASH(row), smbntpwd ); + + if ( FLAGS(row) != NULL ) { + pw_buf.acct_ctrl = get_number( FLAGS(row) ); + } + + if ( pw_buf.acct_ctrl == 0 ) { + pw_buf.acct_ctrl = ACB_NORMAL; + } + + pw_buf.pass_last_set_time = get_number( CHANGE_TIME(row) ); + + return (void*)&pw_buf; +} + +MYSQL_ROW *mysql_getpwent(void *vp) { + mysql_ctrl *mysql; + static MYSQL_ROW row; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + mysql = (mysql_ctrl*)vp; + row = mysql_fetch_row( mysql->result ); + + if ( row == NULL ) { + return NULL; + } + + mysql->current_row++; + + return &row; +} + +struct smb_passwd *mysql_getsmbpwent(void *vp) { + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + return (struct smb_passwd*)mysql_fill_smb_passwd( mysql_getpwent(vp) ); +} + +void *mysql_fetch_passwd( mysql_fill_func filler, char *where ) { + void *retval; + MYSQL handle; + MYSQL_RES *result; + MYSQL_ROW row; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + if ( filler == NULL ) { + return NULL; + } + + if ( where == NULL || *where == '\0' ) { + DEBUG(0,("Null or empty query\n")); + return NULL; + } + + if ( mysql_db_connect( &handle ) ) { + return NULL; + } + + result = mysql_select_results( &handle, where ); + if ( result == NULL ) { + mysql_close( &handle ); + return NULL; + } + + row = mysql_fetch_row ( result ); + if ( row == NULL ) { + mysql_free_result( result ); + mysql_close( &handle ); + return NULL; + } + + if ( DEBUGLEVEL >= 7 ) { + int field; + for (field=0; field< mysql_num_fields( result ); field++ ) { + DEBUG(7,(" row[%d] = \"%s\"\n",field,row[field]?row[field]:"NULL")); + } + } + + retval = (*filler)( &row ); + + mysql_free_result( result ); + mysql_close( &handle ); + + return retval; +} + +void *mysql_getpwuid(mysql_fill_func filler, uid_t uid) { + fstring where; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + slprintf( where, sizeof(where), "unix_uid=%lu", uid); + + return mysql_fetch_passwd(filler,where); +} + +struct smb_passwd *mysql_getsmbpwuid(uid_t uid) { + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + return (struct smb_passwd *)mysql_getpwuid( FILL_SMB, uid ); +} + +void *mysql_getpwnam(mysql_fill_func filler, char *field, const char *name) { + fstring where; + char format[] = "%s='%s'"; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + if ( filler == NULL ) { + DEBUG(0,("Empty fill opteration\n")); + return NULL; + } + + if ( field == NULL || *field == '\0' ) { + DEBUG(0,("Empty or NULL field name\n")); + return NULL; + } + + if ( name == NULL || *name == '\0' ) { + DEBUG(0,("Empty or NULL query\n")); + return NULL; + } + + if ( sizeof(format) + strlen(name) + strlen(field) > sizeof(where) ) { + DEBUG(0,("Query string too long\n")); + return NULL; + } + + slprintf(where, sizeof( where ), format, field, name ); + + return mysql_fetch_passwd( filler, where ); +} + +struct smb_passwd *mysql_getsmbpwnam(const char *unix_name) { + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + return mysql_getpwnam( FILL_SMB, "unix_name", unix_name ); +} + +static void quote_string(char *target, char *string) { + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + if ( string == NULL ) { + fstrcpy( target, "NULL" ); + } + else { + target[0] = '\''; + safe_strcpy(&target[1],string,sizeof(fstring)-2); + safe_strcpy(&target[strlen(target)],"'",2); + } +} + +BOOL mysql_del_smb( MYSQL *handle, char *unix_name ) { + pstring query; + char format[] = "delete from %s where unix_name='%s'"; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + if (strlen( format ) + strlen(mysql_table) + strlen(unix_name)) { + return False; + } + + slprintf( query, sizeof(query), format, mysql_table, unix_name); + + if ( mysql_query( handle, query ) ) { + DEBUG(0,("%s: %s\n", query, mysql_error(handle) )); + return False; + } + + return True; +} + +BOOL mysql_add_smb( MYSQL *handle, struct smb_passwd *smb ) { + pstring query; + char format[] = "insert into %s (unix_name, unix_uid) values ( '%s', %lu )"; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + if ( strlen(format) + strlen(mysql_table) + strlen(smb->unix_name) + 10 > sizeof(query) ) { + DEBUG(0,("Query too long\n")); + return False; + } + + slprintf( query, sizeof(query), "insert into %s (unix_name,unix_uid) values ('%s', %lu)", mysql_table, smb->unix_name, smb->unix_uid); + + if ( mysql_query( handle, query ) ) { + DEBUG(0,("%s: %s\n",query,mysql_error(handle) )); + return False; + } + + return True; +} + +BOOL mysql_mod_smb( MYSQL *handle, struct smb_passwd *smb, BOOL override ) { + pstring query; + fstring smb_passwd; + fstring smb_nt_passwd; + fstring nt_name; + + char format[] = "update %s set nt_name=%s, user_rid=%lu, smb_passwd=%s, smb_nt_passwd=%s, acct_ctrl=%u, pass_last_set_time=unix_timestamp() where unix_name='%s'"; + char extra[] = " and not ISNULL(smb_passwd)"; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + if ( strlen(format) + 2*20 + 3*10 + 2*32 + strlen(mysql_table) >= sizeof( query ) + strlen( extra ) ) { + DEBUG(0,("Query string too long\n")); + return False; + } + + quote_hash(smb_passwd, smb->smb_passwd); + quote_hash(smb_nt_passwd, smb->smb_nt_passwd); + + quote_string(nt_name, smb->nt_name); + + slprintf( query, sizeof(query), format, mysql_table, nt_name, (long unsigned)smb->user_rid, smb_passwd, smb_nt_passwd, smb->acct_ctrl, smb->unix_name); + + if ( override != True ) { + pstrcat( query, extra ); + } + + if ( mysql_query( handle, query ) ) { + DEBUG(0,("%s: %s\n",query,mysql_error(handle) )); + return False; + } + + if ( mysql_affected_rows( handle ) < 1 ) { + DEBUG(3,("No entries changed\n")); + return False; + } + + return True; +} + +BOOL mysql_add_smbpwd_entry(struct smb_passwd *smb) { + MYSQL handle; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + if ( smb == NULL ) { + return False; + } + + if ( mysql_db_lock_connect( &handle ) ) { + return False; + } + + if ( !mysql_add_smb( &handle, smb ) ) { + mysql_close( &handle ); + return False; + } + + if ( !mysql_mod_smb( &handle, smb, True ) ) { + mysql_del_smb( &handle, smb->unix_name ); + mysql_close( &handle ); + return False; + } + + mysql_close(&handle); + return True; +} + +BOOL mysql_mod_smbpwd_entry(struct smb_passwd *smb, BOOL override) { + MYSQL handle; + + DEBUG(5,("%s\n",FUNCTION_MACRO)); + + if ( smb == NULL ) { + return False; + } + + if ( mysql_db_lock_connect( &handle ) ) { + return False; + } + + if ( !mysql_mod_smb( &handle, smb, override ) ) { + mysql_close(&handle); + return False; + } + + mysql_close(&handle); + return True; +} + +static struct smb_passdb_ops mysql_ops = { + mysql_startpwent, + mysql_endpwent, + mysql_getpwpos, + mysql_setpwpos, + mysql_getsmbpwnam, + mysql_getsmbpwuid, + mysql_getsmbpwent, + mysql_add_smbpwd_entry, + mysql_mod_smbpwd_entry +}; + +struct smb_passdb_ops *mysql_initialise_password_db(void) +{ + (void*)mysql_retrieve_password(NULL); + return &mysql_ops; +} + +#else + void mysql_dummy_smb_function(void) { } +#endif |