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/* $Id: prand_conf.c,v 1.5 1999/07/31 16:44:13 cyarnell Exp $
*
* Portions Copyright (c) 1995-1998 by TIS Labs at Network Assoociates Inc.
* Portions Copyright (c) 1998-1998 by TIS Labs @ Network Associates Inc.
*
* Permission to use, copy modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND NETWORK ASSOCIATES
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
* TRUSTED INFORMATION SYSTEMS BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THE SOFTWARE.
*
* program to find where system commands reside
* and what directores are avialable for inspection
* this information is stored in the file prand_conf.h in current directory
*
* function my_find get variable number of arguments
* the first argument is the name of the command
* all remaining arguments are list of directories to search for the command in
* this function returns the path to the command
*/
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#define LINE_MAX 256
int
my_find(char *cmd, char **dir)
{
int curr = 0, c_len, i;
char cmd_line[LINE_MAX];
memset(cmd_line, 0, sizeof(cmd_line));
c_len = strlen(cmd);
for (i = 0; dir[i]; i++) {
curr = strlen(dir[i]);
if (curr + c_len < sizeof(cmd_line)-3) {
sprintf(cmd_line, "%s%s",dir[i], cmd);
if (access(cmd_line, X_OK) == 0)
return (i);
memset(cmd_line, 0, c_len + curr + 2);
}
}
return (0);
}
/*
* function to simulate the ` ` operator in perl return the number
* of bytes read from the pipe
*/
int
pipe_run(char *cmd_line)
{
FILE *pd;
char scratch[LINE_MAX];
int ex, no_bytes = 0, no = 1;
pd = popen(cmd_line, "r");
for (; (pd != NULL) && (no > 0); no_bytes += no)
no = fread(scratch, sizeof(char), sizeof(scratch), pd);
ex = pclose(pd);
return (no_bytes);
}
/*
* function that executes a command with certain flags and checks that the
* output is at least certain length
* First parameter the command
* Second parameter is ther flags
* third parameter is the number of bytes required
* output is 1 if the command works 0 if not
* This function writes to the include file if
*/
int
ex(FILE *fd, char *path, char *cmd, char *arg, int lower_bound)
{
char line[LINE_MAX];
if (strlen(path) + strlen(cmd) + strlen(arg) < sizeof(line)-7) {
memset(line, 0, sizeof(line));
sprintf(line, "%s%s %s 2>&1", path, cmd, arg);
if (pipe_run(line) > lower_bound) {
fprintf(fd,"\t\"%s\",\n", line);
return (1);
}
}
return (0);
}
int
main()
{
extern int errno;
FILE *fd;
int res, vm, i;
int ps, arp, net, dig, cmd;
/*
* set up list of directories where each command may be found in
*/
char *arp_path[] = {"/usr/sbin", "/sbin", "/usr/etc/", "/etc/",
"/usr/bin/", NULL};
char *ps_path[] = {"/usr/bin", "/bin/", NULL};
char *net_path[] = {"/usr/ucb/", "/usr/bin/", "/usr/etc/",
"/usr/sbin/", "/bin/", NULL};
char *dig_path[] = {"/usr/bin/", "/usr/local/bin/", NULL};
char **df_path = ps_path;
char *uptime_path[] = {"/usr/ucb/", "/usr/bin/", "/usr/bsd/", NULL};
char *iostat_path[] = { "/usr/bin/", "/bin/", "/usr/sbin/", NULL};
char *vmstat_path[] = {"/usr/ucb/", "/usr/bin/", "/usr/sbin/", NULL};
char *vm_stat_path[] = {"/usr/ucb/", "/usr/bin/", NULL};
char **w_path = uptime_path;
/* find which directories exist */
char *dirs[] = {"/tmp", "/usr/tmp", "/var/tmp", ".", "/",
"/var/spool", "/usr/spool",
"/usr/adm", "/var/adm", "/dev",
"/usr/mail", "/var/spool/mail", "/var/mail",
"/home", "/usr/home", NULL};
char *files[] = {"/proc/stat", "/proc/rtc", "/proc/meminfo",
"/proc/interrupts", "/proc/self/status",
"/proc/self/maps",
"/var/log/messages", "/var/log/wtmp",
"/var/log/lastlog", "/var/adm/messages",
"/var/adm/wtmp", "/var/adm/lastlog", NULL};
struct stat st;
time_t tim;
/* main program: */
if ((fd = fopen("prand_conf.h", "w")) == NULL) {
perror("Failed creating file prand_conf.h");
exit(errno);
}
fprintf(fd, "#ifndef _PRAND_CMD_H_\n#define _PRAND_CMD_H_\n\n");
fprintf(fd, "const char *cmds[] = {\n");
if ((ps = my_find("ps", ps_path)) >= 0)
res = ex(fd, ps_path[ps], "ps","-axlw", 460) ||
ex(fd, ps_path[ps], "ps", "-ef", 300) ||
ex(fd, ps_path[ps], "ps", "-ale", 300);
if ((arp = my_find("arp", arp_path)) >= 0)
res = ex(fd, arp_path[arp], "arp", "-n -a", 40);
if ((net = my_find("netstat", net_path)) >= 0)
res = ex(fd, net_path[net], "netstat", "-an", 1000);
if ((cmd = my_find("df", df_path)) >= 0)
res = ex(fd, df_path[cmd], "df", "", 40);
if ((dig = my_find("dig", dig_path)) >= 0)
res = ex(fd, dig_path[dig], "dig", "com. soa +ti=1 +retry=0",
100);
if ((cmd = my_find("uptime", uptime_path)) >= 0)
res = ex(fd, uptime_path[cmd], "uptime", "", 40);
if ((cmd = my_find("printenv", uptime_path)) >= 0)
res = ex(fd, uptime_path[cmd], "printenv", "", 400);
if (net >= 0)
res = ex(fd, net_path[net], "netstat", "-s", 1000);
if (dig >= 0)
res = ex(fd, net_path[net], "dig", ". soa +ti=1 +retry=0",100);
if ((cmd = my_find("iostat", iostat_path)) >= 0)
res = ex(fd, iostat_path[cmd], "iostat", "", 100);
vm = 0;
if ((cmd = my_find("vmstat", vmstat_path)))
vm = ex(fd, vmstat_path[cmd], "vmstat", "", 200);
if (vm ==0 && ((cmd = my_find("vm_stat", vm_stat_path)) >= 0))
vm = ex(fd, vm_stat_path[cmd], "vm_stat", "", 200);
if ((cmd = my_find("w", w_path)))
res = ex(fd, w_path[cmd], "w", "", 100);
fprintf(fd,"\tNULL\n};\n\n");
fprintf(fd, "const char *dirs[] = {\n");
for (i=0; dirs[i]; i++) {
if (lstat(dirs[i], &st) == 0)
if (S_ISDIR(st.st_mode))
fprintf(fd,"\t\"%s\",\n", dirs[i]);
}
fprintf(fd,"\tNULL\n};\n\n");
fprintf(fd, "const char *files[] = {\n");
tim = time(NULL);
for (i=0; files[i]; i++) {
if (lstat(files[i],&st) == 0)
if (S_ISREG(st.st_mode) &&
(tim -st.st_mtime) < 84600)
fprintf(fd,"\t\"%s\",\n", files[i]);
}
fprintf (fd, "\tNULL\n};\n");
if ((stat("/dev/random", &st) == 0))
if (S_ISCHR(st.st_mode))
fprintf(fd, "\n#ifndef HAVE_DEV_RANDOM\n%s%s",
"# define HAVE_DEV_RANDOM 1\n",
"#endif /* HAVE_DEV_RANDOM */\n\n");
fprintf(fd, "\n#endif /* _PRAND_CMD_H_ */\n");
fclose(fd);
exit (0);
}
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