diff options
author | Jeremy Allison <jra@samba.org> | 2007-09-11 19:27:34 +0000 |
---|---|---|
committer | Gerald (Jerry) Carter <jerry@samba.org> | 2007-10-10 12:30:40 -0500 |
commit | 327ca9167ed28d2207444a93424cadef79d166b5 (patch) | |
tree | 069eb4ef0f7d5add67c9b4b6b0099f53ad01d9a4 /source3/smbd | |
parent | 351eb37a2555ce474ee02758f2f2cfee33d4d434 (diff) | |
download | samba-327ca9167ed28d2207444a93424cadef79d166b5.tar.gz samba-327ca9167ed28d2207444a93424cadef79d166b5.tar.bz2 samba-327ca9167ed28d2207444a93424cadef79d166b5.zip |
r25103: Ensure we don't return unwritten memory (valgrind caught).
Jeremy.
(This used to be commit b3f0d39d11fa18b7bfef6cec88efaf4a2be2d6e0)
Diffstat (limited to 'source3/smbd')
-rw-r--r-- | source3/smbd/ipc.c | 12 | ||||
-rw-r--r-- | source3/smbd/lanman.c | 135 |
2 files changed, 83 insertions, 64 deletions
diff --git a/source3/smbd/ipc.c b/source3/smbd/ipc.c index 2403706929..0709acc756 100644 --- a/source3/smbd/ipc.c +++ b/source3/smbd/ipc.c @@ -54,9 +54,10 @@ static void copy_trans_params_and_data(char *outbuf, int align, if(data_len < 0) data_len = 0; - DEBUG(5,("copy_trans_params_and_data: params[%d..%d] data[%d..%d]\n", + DEBUG(5,("copy_trans_params_and_data: params[%d..%d] data[%d..%d] (align %d)\n", param_offset, param_offset + param_len, - data_offset , data_offset + data_len)); + data_offset , data_offset + data_len, + align)); *copy_into = '\0'; @@ -65,7 +66,12 @@ static void copy_trans_params_and_data(char *outbuf, int align, if (param_len) memcpy(copy_into, &rparam[param_offset], param_len); - copy_into += param_len + align; + copy_into += param_len; + if (align) { + memset(copy_into, '\0', align); + } + + copy_into += align; if (data_len ) memcpy(copy_into, &rdata[data_offset], data_len); diff --git a/source3/smbd/lanman.c b/source3/smbd/lanman.c index 9eb2a283cc..37fcc658db 100644 --- a/source3/smbd/lanman.c +++ b/source3/smbd/lanman.c @@ -50,6 +50,20 @@ extern userdom_struct current_user_info; #define SHPWLEN 8 /* share password length */ +/* Limit size of ipc replies */ + +static char *smb_realloc_limit(void *ptr, size_t size) +{ + char *val; + + size = MAX((size),4*1024); + val = (char *)SMB_REALLOC(ptr,size); + if (val) { + memset(val,'\0',size); + } + return val; +} + static BOOL api_Unsupported(connection_struct *conn, uint16 vuid, char *param, int tpscnt, char *data, int tdscnt, @@ -824,7 +838,7 @@ static BOOL api_DosPrintQGetInfo(connection_struct *conn, uint16 vuid, */ *rdata_len = 0; *rparam_len = 6; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -846,7 +860,7 @@ static BOOL api_DosPrintQGetInfo(connection_struct *conn, uint16 vuid, } if (mdrcnt > 0) { - *rdata = SMB_REALLOC_LIMIT(*rdata,mdrcnt); + *rdata = smb_realloc_limit(*rdata,mdrcnt); if (!*rdata) { SAFE_FREE(queue); return False; @@ -879,7 +893,7 @@ static BOOL api_DosPrintQGetInfo(connection_struct *conn, uint16 vuid, *rdata_len = desc.usedlen; *rparam_len = 6; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { SAFE_FREE(queue); SAFE_FREE(tmpdata); @@ -940,7 +954,7 @@ static BOOL api_DosPrintQEnum(connection_struct *conn, uint16 vuid, */ *rdata_len = 0; *rparam_len = 6; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -982,7 +996,7 @@ static BOOL api_DosPrintQEnum(connection_struct *conn, uint16 vuid, } if (mdrcnt > 0) { - *rdata = SMB_REALLOC_LIMIT(*rdata,mdrcnt); + *rdata = smb_realloc_limit(*rdata,mdrcnt); if (!*rdata) { goto err; } @@ -1008,7 +1022,7 @@ static BOOL api_DosPrintQEnum(connection_struct *conn, uint16 vuid, *rdata_len = desc.usedlen; *rparam_len = 8; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { goto err; } @@ -1381,11 +1395,10 @@ static BOOL api_RNetServerEnum(connection_struct *conn, uint16 vuid, } *rdata_len = fixed_len + string_len; - *rdata = SMB_REALLOC_LIMIT(*rdata,*rdata_len); + *rdata = smb_realloc_limit(*rdata,*rdata_len); if (!*rdata) { return False; } - memset(*rdata,'\0',*rdata_len); p2 = (*rdata) + fixed_len; /* auxilliary data (strings) will go here */ p = *rdata; @@ -1411,7 +1424,7 @@ static BOOL api_RNetServerEnum(connection_struct *conn, uint16 vuid, } *rparam_len = 8; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -1460,7 +1473,7 @@ static BOOL api_RNetGroupGetUsers(connection_struct *conn, uint16 vuid, *rdata_len = 0; *rparam_len = 8; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -1652,7 +1665,7 @@ static BOOL api_RNetShareGetInfo(connection_struct *conn,uint16 vuid, return False; } - *rdata = SMB_REALLOC_LIMIT(*rdata,mdrcnt); + *rdata = smb_realloc_limit(*rdata,mdrcnt); if (!*rdata) { return False; } @@ -1663,7 +1676,7 @@ static BOOL api_RNetShareGetInfo(connection_struct *conn,uint16 vuid, } *rparam_len = 6; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -1746,12 +1759,11 @@ static BOOL api_RNetShareEnum( connection_struct *conn, uint16 vuid, } *rdata_len = fixed_len + string_len; - *rdata = SMB_REALLOC_LIMIT(*rdata,*rdata_len); + *rdata = smb_realloc_limit(*rdata,*rdata_len); if (!*rdata) { return False; } - memset(*rdata,0,*rdata_len); - + p2 = (*rdata) + fixed_len; /* auxiliary data (strings) will go here */ p = *rdata; f_len = fixed_len; @@ -1772,7 +1784,7 @@ static BOOL api_RNetShareEnum( connection_struct *conn, uint16 vuid, } *rparam_len = 8; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -1902,7 +1914,7 @@ static BOOL api_RNetShareAdd(connection_struct *conn,uint16 vuid, } *rparam_len = 6; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -1916,7 +1928,7 @@ static BOOL api_RNetShareAdd(connection_struct *conn,uint16 vuid, error_exit: *rparam_len = 4; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -1990,7 +2002,7 @@ static BOOL api_RNetGroupEnum(connection_struct *conn,uint16 vuid, unbecome_root(); *rdata_len = cli_buf_size; - *rdata = SMB_REALLOC_LIMIT(*rdata,*rdata_len); + *rdata = smb_realloc_limit(*rdata,*rdata_len); if (!*rdata) { return False; } @@ -2020,7 +2032,7 @@ static BOOL api_RNetGroupEnum(connection_struct *conn,uint16 vuid, *rdata_len = PTR_DIFF(p,*rdata); *rparam_len = 8; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -2066,16 +2078,16 @@ static BOOL api_NetUserGetGroups(connection_struct *conn,uint16 vuid, } *rparam_len = 8; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } - + /* check it's a supported varient */ - + if ( strcmp(str1,"zWrLeh") != 0 ) return False; - + switch( uLevel ) { case 0: level_string = "B21"; @@ -2088,10 +2100,11 @@ static BOOL api_NetUserGetGroups(connection_struct *conn,uint16 vuid, return False; *rdata_len = mdrcnt + 1024; - *rdata = SMB_REALLOC_LIMIT(*rdata,*rdata_len); + *rdata = smb_realloc_limit(*rdata,*rdata_len); if (!*rdata) { return False; } + SSVAL(*rparam,0,NERR_Success); SSVAL(*rparam,2,0); /* converter word */ @@ -2213,7 +2226,7 @@ static BOOL api_RNetUserEnum(connection_struct *conn, uint16 vuid, resume_context, cli_buf_size)); *rparam_len = 8; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -2223,7 +2236,7 @@ static BOOL api_RNetUserEnum(connection_struct *conn, uint16 vuid, return False; *rdata_len = cli_buf_size; - *rdata = SMB_REALLOC_LIMIT(*rdata,*rdata_len); + *rdata = smb_realloc_limit(*rdata,*rdata_len); if (!*rdata) { return False; } @@ -2291,13 +2304,13 @@ static BOOL api_NetRemoteTOD(connection_struct *conn,uint16 vuid, char *p; *rparam_len = 4; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } *rdata_len = 21; - *rdata = SMB_REALLOC_LIMIT(*rdata,*rdata_len); + *rdata = smb_realloc_limit(*rdata,*rdata_len); if (!*rdata) { return False; } @@ -2381,7 +2394,7 @@ static BOOL api_SetUserPassword(connection_struct *conn,uint16 vuid, memcpy(pass2,p+16,16); *rparam_len = 4; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -2458,7 +2471,7 @@ static BOOL api_SamOEMChangePassword(connection_struct *conn,uint16 vuid, fstring user; char *p = get_safe_str_ptr(param,tpscnt,param,2); *rparam_len = 2; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -2561,7 +2574,7 @@ static BOOL api_RDosPrintJobDel(connection_struct *conn,uint16 vuid, return(False); *rparam_len = 4; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -2633,7 +2646,7 @@ static BOOL api_WPrintQueueCtrl(connection_struct *conn,uint16 vuid, return(False); *rparam_len = 4; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -2731,7 +2744,7 @@ static BOOL api_PrintJobInfo(connection_struct *conn, uint16 vuid, if(!rap_to_pjobid(SVAL(p,0), sharename, &jobid)) return False; *rparam_len = 4; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -2856,7 +2869,7 @@ static BOOL api_RNetServerGetInfo(connection_struct *conn,uint16 vuid, } *rdata_len = mdrcnt; - *rdata = SMB_REALLOC_LIMIT(*rdata,*rdata_len); + *rdata = smb_realloc_limit(*rdata,*rdata_len); if (!*rdata) { return False; } @@ -2915,7 +2928,7 @@ static BOOL api_RNetServerGetInfo(connection_struct *conn,uint16 vuid, *rdata_len = PTR_DIFF(p2,*rdata); *rparam_len = 6; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -2950,7 +2963,7 @@ static BOOL api_NetWkstaGetInfo(connection_struct *conn,uint16 vuid, DEBUG(4,("NetWkstaGetInfo level %d\n",level)); *rparam_len = 6; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -2961,7 +2974,7 @@ static BOOL api_NetWkstaGetInfo(connection_struct *conn,uint16 vuid, } *rdata_len = mdrcnt + 1024; - *rdata = SMB_REALLOC_LIMIT(*rdata,*rdata_len); + *rdata = smb_realloc_limit(*rdata,*rdata_len); if (!*rdata) { return False; } @@ -3227,7 +3240,7 @@ static BOOL api_RNetUserGetInfo(connection_struct *conn, uint16 vuid, } *rparam_len = 6; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -3252,7 +3265,7 @@ static BOOL api_RNetUserGetInfo(connection_struct *conn, uint16 vuid, } *rdata_len = mdrcnt + 1024; - *rdata = SMB_REALLOC_LIMIT(*rdata,*rdata_len); + *rdata = smb_realloc_limit(*rdata,*rdata_len); if (!*rdata) { return False; } @@ -3462,7 +3475,7 @@ static BOOL api_WWkstaUserLogon(connection_struct *conn,uint16 vuid, return False; } if (mdrcnt > 0) { - *rdata = SMB_REALLOC_LIMIT(*rdata,mdrcnt); + *rdata = smb_realloc_limit(*rdata,mdrcnt); if (!*rdata) { return False; } @@ -3504,7 +3517,7 @@ static BOOL api_WWkstaUserLogon(connection_struct *conn,uint16 vuid, *rdata_len = desc.usedlen; *rparam_len = 6; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -3551,7 +3564,7 @@ static BOOL api_WAccessGetUserPerms(connection_struct *conn,uint16 vuid, } *rparam_len = 6; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -3623,7 +3636,7 @@ static BOOL api_WPrintJobGetInfo(connection_struct *conn, uint16 vuid, } if (mdrcnt > 0) { - *rdata = SMB_REALLOC_LIMIT(*rdata,mdrcnt); + *rdata = smb_realloc_limit(*rdata,mdrcnt); if (!*rdata) { return False; } @@ -3649,7 +3662,7 @@ static BOOL api_WPrintJobGetInfo(connection_struct *conn, uint16 vuid, } *rparam_len = 6; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -3719,7 +3732,7 @@ static BOOL api_WPrintJobEnumerate(connection_struct *conn, uint16 vuid, count = print_queue_status(snum,&queue,&status); if (mdrcnt > 0) { - *rdata = SMB_REALLOC_LIMIT(*rdata,mdrcnt); + *rdata = smb_realloc_limit(*rdata,mdrcnt); if (!*rdata) { return False; } @@ -3740,7 +3753,7 @@ static BOOL api_WPrintJobEnumerate(connection_struct *conn, uint16 vuid, *rdata_len = desc.usedlen; *rparam_len = 8; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -3867,7 +3880,7 @@ static BOOL api_WPrintDestGetInfo(connection_struct *conn, uint16 vuid, desc.neededlen = 0; } else { if (mdrcnt > 0) { - *rdata = SMB_REALLOC_LIMIT(*rdata,mdrcnt); + *rdata = smb_realloc_limit(*rdata,mdrcnt); if (!*rdata) { return False; } @@ -3888,7 +3901,7 @@ static BOOL api_WPrintDestGetInfo(connection_struct *conn, uint16 vuid, } *rparam_len = 6; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -3944,7 +3957,7 @@ static BOOL api_WPrintDestEnum(connection_struct *conn, uint16 vuid, } if (mdrcnt > 0) { - *rdata = SMB_REALLOC_LIMIT(*rdata,mdrcnt); + *rdata = smb_realloc_limit(*rdata,mdrcnt); if (!*rdata) { return False; } @@ -3969,7 +3982,7 @@ static BOOL api_WPrintDestEnum(connection_struct *conn, uint16 vuid, *rdata_len = desc.usedlen; *rparam_len = 8; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -4016,7 +4029,7 @@ static BOOL api_WPrintDriverEnum(connection_struct *conn, uint16 vuid, } if (mdrcnt > 0) { - *rdata = SMB_REALLOC_LIMIT(*rdata,mdrcnt); + *rdata = smb_realloc_limit(*rdata,mdrcnt); if (!*rdata) { return False; } @@ -4032,7 +4045,7 @@ static BOOL api_WPrintDriverEnum(connection_struct *conn, uint16 vuid, *rdata_len = desc.usedlen; *rparam_len = 8; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -4078,7 +4091,7 @@ static BOOL api_WPrintQProcEnum(connection_struct *conn, uint16 vuid, } if (mdrcnt > 0) { - *rdata = SMB_REALLOC_LIMIT(*rdata,mdrcnt); + *rdata = smb_realloc_limit(*rdata,mdrcnt); if (!*rdata) { return False; } @@ -4095,7 +4108,7 @@ static BOOL api_WPrintQProcEnum(connection_struct *conn, uint16 vuid, *rdata_len = desc.usedlen; *rparam_len = 8; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -4142,7 +4155,7 @@ static BOOL api_WPrintPortEnum(connection_struct *conn, uint16 vuid, } if (mdrcnt > 0) { - *rdata = SMB_REALLOC_LIMIT(*rdata,mdrcnt); + *rdata = smb_realloc_limit(*rdata,mdrcnt); if (!*rdata) { return False; } @@ -4160,7 +4173,7 @@ static BOOL api_WPrintPortEnum(connection_struct *conn, uint16 vuid, *rdata_len = desc.usedlen; *rparam_len = 8; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -4217,7 +4230,7 @@ static BOOL api_RNetSessionEnum(connection_struct *conn, uint16 vuid, num_sessions = list_sessions(talloc_tos(), &session_list); if (mdrcnt > 0) { - *rdata = SMB_REALLOC_LIMIT(*rdata,mdrcnt); + *rdata = smb_realloc_limit(*rdata,mdrcnt); if (!*rdata) { return False; } @@ -4245,7 +4258,7 @@ static BOOL api_RNetSessionEnum(connection_struct *conn, uint16 vuid, *rdata_len = desc.usedlen; *rparam_len = 8; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -4269,7 +4282,7 @@ static BOOL api_TooSmall(connection_struct *conn,uint16 vuid, char *param, char int *rdata_len, int *rparam_len) { *rparam_len = MIN(*rparam_len,mprcnt); - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } @@ -4295,7 +4308,7 @@ static BOOL api_Unsupported(connection_struct *conn, uint16 vuid, int *rdata_len, int *rparam_len) { *rparam_len = 4; - *rparam = SMB_REALLOC_LIMIT(*rparam,*rparam_len); + *rparam = smb_realloc_limit(*rparam,*rparam_len); if (!*rparam) { return False; } |