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#include "main.h"
/*************************************************************************
CHECK_USER
*****************************************************************************/
/*
checks to see if user is root so that they can edit /etc/services file
returns -1 on failure
*/
int check_user()
{
int uid,euid;
if(geteuid() !=0) {
printf("USER IS NOT ROOT /etc/services unchanged\n");
printf("you must now edit the file by hand\n");
return(-1);
}
printf("USER IS ROOT proceeding\n");
return(1);
}
/**************************************************************************
* extract_current_ports
***************************************************************************/
/* greps /etc/services for the qmaster_service and dqs_execd_service
and extracts the port nums that were assigned to the out. */
void extract_current_ports()
{
char *tmpstr;
FILE *pfd;
char buf[MAXLEN];
char *ptr;
MALLOC_STR(tmpstr);
bzero(buf,MAXLEN);
sprintf(tmpstr, "grep %s /etc/services",qmaster_service);
PUT_NULL(tmpstr);
if((pfd = popen(tmpstr,"r"))==NULL){
fprintf(stderr,"Can't open pipe\n");
return;
}
while(fgets(buf,MAXLEN,pfd)){
DPRINTF(("pipe_buf ==:%s:\n",buf));
ptr = strtok(buf," \t");
/*ptr now has qmaster service*/
if(strcmp(ptr,qmaster_service)!=0)
continue;
ptr = strtok((char*)NULL,"/");
DPRINTF(("Service num == :%s:\n",ptr));
qmaster_service_num = atoi(ptr);
DPRINTF(("Service num == :%d:\n",qmaster_service_num));
break;
}
fclose(pfd);
sprintf(tmpstr, "grep %s /etc/services",dqs_execd_service);
PUT_NULL(tmpstr);
if((pfd = popen(tmpstr,"r"))==NULL){
fprintf(stderr,"Can't open pipe\n");
return;
}
while(fgets(buf,MAXLEN,pfd)){
DPRINTF(("pipe_buf ==:%s:",buf));
ptr = strtok(buf," \t");
/*ptr now has dqs_execd*/
if(strcmp(ptr,dqs_execd_service)!=0)
continue;
ptr = strtok((char*)NULL,"/");
DPRINTF(("Service num == :%s:\n",ptr));
dqs_execd_service_num = atoi(ptr);
break;
}
fclose(pfd);
free(tmpstr);
return;
}
/**************************************************************************
FIND_GOOD_PORTS
***************************************************************************/
/*keeps checking /etc/services for three consecutive numbers to use as ports*/
void find_good_ports()
{
int start_num=0;
int good1=0,good2=0,good3=0;
char *tstr;
char * line;
MALLOC_STR(tstr);
MALLOC_STR(line);
if(already_has_port_nums==1){
DPRINTF(("Already has port nums finding them\n"));
extract_current_ports();
return;
}
if(!(strcmp(reserved_port,"TRUE")))
start_num=607;
else
start_num=2062;
while( (good1 ==0) && (good2 ==0) && (good3==0) ){ /* loop till we get 3 unused ports*/
printf("Trying to find unused port numbers.....\n");
DPRINTF(("############################################################################\n\n"));
DPRINTF((" find_good_ports: checking %d\n",start_num));
sprintf(line,"grep %d /etc/services",start_num);
PUT_NULL(line);
DPRINTF(("checking for port %d in /etc/services \n",start_num));
DPRINTF(("execing :%s: to check\n",line));
DPRINTF(("====================================\n"));
good1 = exec_it(line); /* returns 0 if match found*/
DPRINTF(("====================================\n"));
DPRINTF(("good1 returns %d\n",good1));
if(good1 !=0) { /* 1st entry not in services..now check for second*/
sprintf(line,"grep %d /etc/services ",(start_num+1));
PUT_NULL(line);
DPRINTF(("1st entry not in services..now check for second\n"));
DPRINTF(("execing :%s: to check\n",line));
DPRINTF(("====================================\n"));
good2 = exec_it(line);
DPRINTF(("====================================\n"));
DPRINTF(("good2 returns %d\n",good2));
if (good2 ==0){
good1 =0;
good3 =0;
start_num++; /* this will cause it to jump 2 places*/
}
else{
sprintf(line,"grep %d /etc/services ",(start_num+1));
PUT_NULL(line);
DPRINTF(("2nd entry not in services..now check for third\n"));
DPRINTF(("execing :%s: to check\n",line));
DPRINTF(("====================================\n"));
good3 = exec_it(line);
DPRINTF(("====================================\n"));
DPRINTF(("good3 returns %d\n",good2));
if(good3==0){
good1 =0;
good3 =0;
start_num++; /* this will cause it to jump 2 places*/
}
}
}
start_num++;
}
start_num--;
qmaster_service_num = start_num;
dqs_execd_service_num = start_num+1;
intercell_service_num = start_num+2;
DPRINTF(("qmaster_service_num = %d\n",qmaster_service_num));
DPRINTF(("dqs_execd_service_num = %d\n",dqs_execd_service_num));
DPRINTF((" intercell_service_num = %d\n",intercell_service_num));
free(line);
free(tstr);
printf("############################################################################\n\n");
printf(" Found ports %d and %d an %d \n",
qmaster_service_num, dqs_execd_service_num, intercell_service_num);
}
/*************************************************************************
ADD_SERVICES
*****************************************************************************/
/* pulls qmaster_service names out of globals array and qmaster_service_num,
dqs_execd_service name, dqs_execd_service_num, intercell_service name,
and intercell_service_num and writes to
scriptfile called addservice.sh which when exec'd will append the services
to /etc/services */
void add_services()
{
FILE* fd;
FILE* serv;
char *qmstr;
char *dqstr;
char *icstr;
int result=0;
char *ans;
struct stat sbuf;
char c;
if(!(fd = fopen("addservice.sh","w"))) {
err_cont("Can't open addservice.sh for writing\n");
return;
}
MALLOC_STR(qmstr);
MALLOC_STR(dqstr);
MALLOC_STR(icstr);
sprintf(qmstr,"%s %d/tcp",qmaster_service,qmaster_service_num);
sprintf(dqstr,"%s %d/tcp",dqs_execd_service,dqs_execd_service_num);
sprintf(icstr,"%s %d/tcp",intercell_service,intercell_service_num);
DPRINTF(("add_services: qmstr entry ==:%s:\n",qmstr));
DPRINTF(("add_services: dqstr entry ==:%s:\n",dqstr));
DPRINTF(("add_services: icstr entry ==:%s:\n",icstr));
fprintf(fd,"%s\n","#!/bin/sh");
fprintf(fd,"ser1=%s\n", qmaster_service);
fprintf(fd,"ser2=%s\n",dqs_execd_service);
fprintf(fd,"ser3=%s\n",intercell_service);
fprintf(fd,"port1=%d\n",qmaster_service_num);
fprintf(fd,"port2=%d\n\n\n",dqs_execd_service_num);
fprintf(fd,"port3=%d\n\n\n",intercell_service_num);
fprintf(fd,"echo \"___Test1_________\"\n");
fprintf(fd," echo \" grep $ser1 /etc/services \"\n");
fprintf(fd,"grep $ser1 /etc/services \n");
fprintf(fd,"result1=$?\n\n");
fprintf(fd,"if [ $result1 -eq 0 ] \n");
fprintf(fd,"then\n");
fprintf(fd,"echo \"Can't add ports to /etc/services\"\n");
fprintf(fd,"exit 1\n");
fprintf(fd,"fi\n");
fprintf(fd,"echo \"___Test1 successful_________\"\n\n");
fprintf(fd,"echo \"___Test2_________\"\n");
fprintf(fd," echo \" grep $ser2 /etc/services \"\n");
fprintf(fd,"grep $ser2 /etc/services \n");
fprintf(fd,"result2=$?\n");
fprintf(fd,"if [ $result2 -eq 0 ] \n");
fprintf(fd,"then\n");
fprintf(fd,"echo \"Can't add ports to /etc/services\"\n");
fprintf(fd,"exit 1\n");
fprintf(fd,"fi\n");
fprintf(fd,"echo \"___Test2 successful_________\"\n");
fprintf(fd,"echo \"___Test3_________\"\n");
fprintf(fd," echo \" grep $ser3 /etc/services \"\n");
fprintf(fd,"grep $ser3 /etc/services \n");
fprintf(fd,"result3=$?\n");
fprintf(fd,"if [ $result3 -eq 0 ] \n");
fprintf(fd,"then\n");
fprintf(fd,"echo \"Can't add ports to /etc/services\"\n");
fprintf(fd,"exit 1\n");
fprintf(fd,"fi\n");
fprintf(fd,"echo \"___Test3 successful_________\"\n");
fprintf(fd,"echo \"___Test4_________\"\n\n\n");
fprintf(fd," echo \" grep $port1 /etc/services \"\n");
fprintf(fd,"grep $port1 /etc/services \n");
fprintf(fd,"result4=$?\n");
fprintf(fd,"if [ $result4 -eq 0 ] \n");
fprintf(fd,"then\n");
fprintf(fd,"echo \"Can't add ports to /etc/services\"\n");
fprintf(fd,"exit 1\n");
fprintf(fd,"fi\n");
fprintf(fd,"echo \"___Test4 successful_________\"\n");
fprintf(fd,"echo \"___Test5_________\"\n");
fprintf(fd," echo \" grep $port2 /etc/services \"\n");
fprintf(fd,"grep $port2 /etc/services\n");
fprintf(fd,"result5=$?\n");
fprintf(fd,"if [ $result5 -eq 0 ]\n");
fprintf(fd,"then\n");
fprintf(fd,"echo \"Can't add ports to /etc/services\"\n");
fprintf(fd,"exit 1\n");
fprintf(fd,"fi\n\n");
fprintf(fd,"echo \"___Test5 successful_________\"\n\n");
fprintf(fd,"echo \"___Test6_________\"\n");
fprintf(fd," echo \" grep $port3 /etc/services \"\n");
fprintf(fd,"grep $port3 /etc/services\n");
fprintf(fd,"result6=$?\n");
fprintf(fd,"if [ $result6 -eq 0 ]\n");
fprintf(fd,"then\n");
fprintf(fd,"echo \"Can't add ports to /etc/services\"\n");
fprintf(fd,"exit 1\n");
fprintf(fd,"fi\n\n");
fprintf(fd,"echo \"___Test6 successful_________\"\n\n");
fprintf(fd,"echo \"---TESTING DONE....adding to /etc/services\"\n\n\n");
fprintf(fd,"%s\n","cp /etc/services /etc/services.dqs.orig");
fprintf(fd,"echo \"%s\" >> /etc/services\n", qmstr);
fprintf(fd,"echo \"%s\" >> /etc/services\n", dqstr);
fprintf(fd,"echo \"%s\" >> /etc/services\n", icstr);
fflush(fd);
fclose(fd);
chmod("/margit/a/users/pasko/DQS/config/addservice.sh",0755);
printf("Created addservice.sh which will append ports to /etc/services. \n");
printf("This should be run on all machines that will use DQS\n");
}
/******************************************************************
exec_it
*******************************************************************/
/*
Will exec what is in global exec_matrix, returns exit status */
int exec_it(cmd)
char * cmd;
{
pid_t pid=0;
int i,status=0;
int npid;
parse_to_exec_matrix(cmd);
/*dump_exec_matrix();*/
if(pid = fork()){ /*parent*/
errno =0 ;
if (wait(&status)!=pid) err_crit("wait error\n");
DPRINTF(("in parent status ==%d\n",status));
DPRINTF(("======KID end=====================\n"));
free_exec_matrix();
return(status);
}
else{ /* kids*/
DPRINTF(("=======KID BEG====================\n"));
close(1);
close(2);
execvp(exec_matrix[0],exec_matrix);
err_crit("\n\n##############Couldn't exec##########\n");
}
}/* exec_it */
/******************************************************************
PARSE_TO_EXEC_MATRIX
*******************************************************************/
/* chops a line delimeted by spaces and puts the pieces in the
global exec matrix mallocs space for exec_matrix */
void parse_to_exec_matrix(str)
char * str;
{
int i=0;
char *ptr;
char buf[MAXSTR];
strcpy(buf,str);
PUT_NULL(buf);
ptr = strtok(buf," ");
MALLOC_STR(exec_matrix[i]);
strcpy(exec_matrix[i],ptr);
i++;
while((ptr =strtok((char*)NULL," "))!=NULL){
MALLOC_STR(exec_matrix[i]);
strcpy(exec_matrix[i],ptr);
i++;
}
/* DPRINTF((" num of elements parsed ==%d\n",i-1)); */
/* if (i==1){
strcpy(exec_matrix[i],exec_matrix[0]);
PUT_NULL(exec_matrix[i]);
i++;
}
*/
exec_matrix[i]=NULL;
num_in_exec_matrix = i-1;
}
/******************************************************************
DUMP_EXEC_MATRIX
*******************************************************************/
/* prints contents of exec matrix, used for debugging */
void dump_exec_matrix()
{
int i=0;
DTRACE;
DPRINTF(("\n\n"));
for(i=0;exec_matrix[i]!=0;i++)
DPRINTF(("\texec matrix[%d]-->%s\n",i,exec_matrix[i]));
}
/******************************************************************
free_exec_matrix
*******************************************************************/
/* frees memory allocated in parse to exec_matrix resets global
num_in_exec_matrix */
void free_exec_matrix()
{
int i;
for(i=0;i<num_in_exec_matrix;i++)
free(exec_matrix[i]);
num_in_exec_matrix=0;
}
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