utils.c File Reference

#include <stdlib.h>
#include <string.h>
#include <sys/wait.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <openvas/misc/network.h>
#include <openvas/misc/prefs.h>
#include "log.h"
#include "comm.h"
#include "ntp.h"
#include "utils.h"
#include "pluginscheduler.h"

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Functions
int	common (struct arglist *l1, struct arglist *l2)
	Returns 1 if the two arglists have a name in common. More...
struct arglist *	list2arglist (char *list)
int	get_max_hosts_number (void)
int	get_max_checks_number (void)
int	process_alive (pid_t pid)
int	data_left (int soc)
void	wait_for_children1 (void)
int	is_scanner_only_pref (const char *pref)
void	send_printf (int soc, char *data,...)
	Writes data to a socket. More...

Variables
int	global_max_hosts
int	global_max_checks

Function Documentation

common()

int common	(	struct arglist *	l1,
		struct arglist *	l2
	)

Returns 1 if the two arglists have a name in common.

Returns

0 if l1 and l2 have a name in common, 0 otherwise.

Definition at line 54 of file utils.c.

{
  struct arglist *l2_start = l2;
  if (!l1 || !l2)
    {
      return 0;
    }
  while (l1->next != NULL)
    {
      l2 = l2_start;
      while (l2->next != NULL)
        {
          if (strcmp (l1->name, l2->name) == 0)
            return 1;
          l2 = l2->next;
        }
      l1 = l1->next;
    }
  return 0;
}

data_left()

int data_left

(

int

soc

)

Definition at line 193 of file utils.c.

{
  int data = 0;
  ioctl (soc, FIONREAD, &data);
  return data;
}

get_max_checks_number()

int get_max_checks_number

(

void

)

Get the max number of plugins to launch against the remote host at the same time

Definition at line 150 of file utils.c.

References global_max_checks, and log_write().

{
  int max_checks;
  if (prefs_get ("max_checks"))
    {
      max_checks = atoi (prefs_get ("max_checks"));
      if (max_checks <= 0)
        {
          log_write ("Error ! max_hosts = %d -- check %s", max_checks,
                     (char *) prefs_get ("config_file"));
          max_checks = global_max_checks;
        }
      else if (max_checks > global_max_checks)
        {
          log_write ("Client tried to raise the maximum checks number - %d."
                     " Using %d. Change 'max_checks' in openvassd.conf if you"
                     " believe this is incorrect", max_checks, global_max_checks);
          max_checks = global_max_checks;
        }
    }
  else
    max_checks = global_max_checks;
  return (max_checks);
}

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get_max_hosts_number()

int get_max_hosts_number

(

void

)

Get the max number of hosts to test at the same time.

Definition at line 120 of file utils.c.

References global_max_hosts, and log_write().

{
  int max_hosts;
  if (prefs_get ("max_hosts"))
    {
      max_hosts = atoi (prefs_get ("max_hosts"));
      if (max_hosts <= 0)
        {
          log_write ("Error ! max_hosts = %d -- check %s", max_hosts,
                     (char *) prefs_get ("config_file"));
          max_hosts = global_max_hosts;
        }
      else if (max_hosts > global_max_hosts)
        {
          log_write ("Client tried to raise the maximum hosts number - %d."
                     " Using %d. Change 'max_hosts' in openvassd.conf if you"
                     " believe this is incorrect", max_hosts, global_max_hosts);
          max_hosts = global_max_hosts;
        }
    }
  else
    max_hosts = global_max_hosts;
  return (max_hosts);
}

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is_scanner_only_pref()

int is_scanner_only_pref

(

const char *

pref

)

Definition at line 221 of file utils.c.

Referenced by comm_send_preferences().

{
  if (pref == NULL)
    return 0;
  if (!strcmp (pref, "logfile") || !strcmp (pref, "config_file")
      || !strcmp (pref, "plugins_folder")
      || !strcmp (pref, "kb_location")
      || !strcmp (pref, "dumpfile")
      || !strcmp (pref, "negot_timeout")
      || !strcmp (pref, "force_pubkey_auth")
      || !strcmp (pref, "log_whole_attack")
      || !strcmp (pref, "be_nice")
      || !strcmp (pref, "log_plugins_name_at_load")
      || !strcmp (pref, "nasl_no_signature_check")
      /* Preferences starting with sys_ are scanner-side only. */
      || !strncmp (pref, "sys_", 4))
    return 1;
  return 0;
}

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list2arglist()

struct arglist* list2arglist

(

char *

list

)

Converts a user comma delimited input (1,2,3) into an arglist.

Definition at line 81 of file utils.c.

{
  struct arglist *ret;
  char *t;

  if (!list)
    return NULL;

  ret = g_malloc0 (sizeof (struct arglist));

  while ((t = strchr (list, ',')) != NULL)
    {
      t[0] = 0;
      while (list[0] == ' ')
        list++;
      if (list[0] != '\0')
        {
          arg_add_value (ret, list, ARG_INT, (void *) 1);
        }
      list = t + 1;
    }

  while (list[0] == ' ')
    list++;
  if (list[0] != '\0')
    {
      arg_add_value (ret, list, ARG_INT, (void *) 1);
    }
  return ret;
}

process_alive()

int process_alive

(

pid_t

pid

)

Determines if a process is alive - as reliably as we can

Definition at line 180 of file utils.c.

{
  int i, ret;
  if (pid == 0)
    return 0;

  for (i = 0, ret = 1; (i < 10) && (ret > 0); i++)
    ret = waitpid (pid, NULL, WNOHANG);

  return kill (pid, 0) == 0;
}

send_printf()

void send_printf	(	int	soc,
		char *	data,
			...
	)

Writes data to a socket.

Definition at line 276 of file utils.c.

Referenced by comm_send_pluginlist(), comm_send_preferences(), comm_terminate(), send_plug_info(), and send_plugins_preferences().

{
  va_list param;
  char *buffer;

  va_start (param, data);
  buffer = g_strdup_vprintf (data, param);
  va_end (param);

  auth_send (soc, buffer);
  g_free (buffer);
}

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wait_for_children1()

void wait_for_children1

(

void

)

Definition at line 202 of file utils.c.

{
  int e, n = 0;
  do
    {
      errno = 0;
      e = waitpid (-1, NULL, WNOHANG);
      n++;
    }
  while ((e > 0 || errno == EINTR) && n < 20);
}

Variable Documentation

global_max_checks

int global_max_checks

Definition at line 87 of file openvassd.c.

Referenced by get_max_checks_number().

global_max_hosts

int global_max_hosts

Globals that should not be touched (used in utils module).

Definition at line 86 of file openvassd.c.

Referenced by get_max_hosts_number().