#include "config.h"
#include <sys/param.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <stdio.h>
#ifdef STDC_HEADERS
# include <stdlib.h>
# include <stddef.h>
#else
# ifdef HAVE_STDLIB_H
# include <stdlib.h>
# endif
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#else
# ifdef HAVE_STRINGS_H
# include <strings.h>
# endif
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_FNMATCH
# include <fnmatch.h>
#endif
#ifdef HAVE_NETGROUP_H
# include <netgroup.h>
#endif
#include <ctype.h>
#include <pwd.h>
#include <grp.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <dirent.h>
#include "sudo.h"
#include "parse.h"
#include "interfaces.h"
#ifndef HAVE_FNMATCH
# include "emul/fnmatch.h"
#endif
#ifndef lint
static const char rcsid[] = "$Sudo: testsudoers.c,v 1.76 2002/03/16 00:44:48 millert Exp $";
#endif
void init_parser __P((void));
void dumpaliases __P((void));
void set_perms_dummy __P((int, int));
char **Argv, **NewArgv;
int Argc, NewArgc;
int parse_error = FALSE;
int num_interfaces;
struct interface *interfaces;
struct sudo_user sudo_user;
void (*set_perms) __P((int, int)) = set_perms_dummy;
extern int clearaliases;
extern int pedantic;
int
has_meta(s)
char *s;
{
char *t;
for (t = s; *t; t++) {
if (*t == '\\' || *t == '?' || *t == '*' || *t == '[' || *t == ']')
return(TRUE);
}
return(FALSE);
}
int
command_matches(cmnd, cmnd_args, path, sudoers_args)
char *cmnd;
char *cmnd_args;
char *path;
char *sudoers_args;
{
int clen, plen;
char *args;
if (cmnd == NULL)
return(FALSE);
if ((args = strchr(path, ' ')))
*args++ = '\0';
if (has_meta(path)) {
if (fnmatch(path, cmnd, FNM_PATHNAME))
return(FALSE);
if (!sudoers_args)
return(TRUE);
else if (!cmnd_args && sudoers_args && !strcmp("\"\"", sudoers_args))
return(TRUE);
else if (sudoers_args)
return((fnmatch(sudoers_args, cmnd_args ? cmnd_args : "", 0) == 0));
else
return(FALSE);
} else {
plen = strlen(path);
if (path[plen - 1] != '/') {
if (strcmp(cmnd, path))
return(FALSE);
if (!sudoers_args)
return(TRUE);
else if (!cmnd_args && sudoers_args && !strcmp("\"\"", sudoers_args))
return(TRUE);
else if (sudoers_args)
return((fnmatch(sudoers_args, cmnd_args ? cmnd_args : "", 0) == 0));
else
return(FALSE);
}
clen = strlen(cmnd);
if (clen < plen + 1)
return(FALSE);
if (strchr(cmnd + plen + 1, '/') != NULL)
return(FALSE);
return((strncmp(cmnd, path, plen) == 0));
}
}
int
addr_matches(n)
char *n;
{
int i;
char *m;
struct in_addr addr, mask;
if ((m = strchr(n, '/'))) {
*m++ = '\0';
addr.s_addr = inet_addr(n);
if (strchr(m, '.'))
mask.s_addr = inet_addr(m);
else {
i = 32 - atoi(m);
mask.s_addr = 0xffffffff;
mask.s_addr >>= i;
mask.s_addr <<= i;
mask.s_addr = htonl(mask.s_addr);
}
*(m - 1) = '/';
for (i = 0; i < num_interfaces; i++)
if ((interfaces[i].addr.s_addr & mask.s_addr) == addr.s_addr)
return(TRUE);
} else {
addr.s_addr = inet_addr(n);
for (i = 0; i < num_interfaces; i++)
if (interfaces[i].addr.s_addr == addr.s_addr ||
(interfaces[i].addr.s_addr & interfaces[i].netmask.s_addr)
== addr.s_addr)
return(TRUE);
}
return(FALSE);
}
int
hostname_matches(shost, lhost, pattern)
char *shost;
char *lhost;
char *pattern;
{
if (has_meta(pattern)) {
if (strchr(pattern, '.'))
return(fnmatch(pattern, lhost, FNM_CASEFOLD));
else
return(fnmatch(pattern, shost, FNM_CASEFOLD));
} else {
if (strchr(pattern, '.'))
return(strcasecmp(lhost, pattern));
else
return(strcasecmp(shost, pattern));
}
}
int
usergr_matches(group, user)
char *group;
char *user;
{
struct group *grp;
char **cur;
if (*group++ != '%')
return(FALSE);
if ((grp = getgrnam(group)) == NULL)
return(FALSE);
if (getgid() == grp->gr_gid)
return(TRUE);
for (cur=grp->gr_mem; *cur; cur++) {
if (strcmp(*cur, user) == 0)
return(TRUE);
}
return(FALSE);
}
int
netgr_matches(netgr, host, shost, user)
char *netgr;
char *host;
char *shost;
char *user;
{
#ifdef HAVE_GETDOMAINNAME
static char *domain = (char *) -1;
#else
static char *domain = NULL;
#endif
if (*netgr++ != '+')
return(FALSE);
#ifdef HAVE_GETDOMAINNAME
if (domain == (char *) -1) {
domain = (char *) emalloc(MAXHOSTNAMELEN);
if (getdomainname(domain, MAXHOSTNAMELEN) != 0 || *domain == '\0') {
free(domain);
domain = NULL;
}
}
#endif
#ifdef HAVE_INNETGR
if (innetgr(netgr, host, user, domain))
return(TRUE);
else if (host != shost && innetgr(netgr, shost, user, domain))
return(TRUE);
#endif
return(FALSE);
}
void
set_perms_dummy(i, j)
int i, j;
{
return;
}
void
set_fqdn()
{
return;
}
void
init_envtables()
{
return;
}
int
main(argc, argv)
int argc;
char **argv;
{
struct passwd pw;
char *p;
#ifdef YYDEBUG
extern int yydebug;
yydebug = 1;
#endif
Argv = argv;
Argc = argc;
if (Argc >= 6 && strcmp(Argv[1], "-u") == 0) {
user_runas = &Argv[2];
pw.pw_name = Argv[3];
user_host = Argv[4];
user_cmnd = Argv[5];
NewArgv = &Argv[5];
NewArgc = Argc - 5;
} else if (Argc >= 4) {
pw.pw_name = Argv[1];
user_host = Argv[2];
user_cmnd = Argv[3];
NewArgv = &Argv[3];
NewArgc = Argc - 3;
} else {
(void) fprintf(stderr,
"usage: %s [-u user] <user> <host> <command> [args]\n", Argv[0]);
exit(1);
}
sudo_user.pw = &pw;
if ((p = strchr(user_host, '.'))) {
*p = '\0';
user_shost = estrdup(user_host);
*p = '.';
} else {
user_shost = user_host;
}
if (NewArgc > 1) {
size_t size;
char *to, **from;
size = (size_t) NewArgv[NewArgc-1] + strlen(NewArgv[NewArgc-1]) -
(size_t) NewArgv[1] + 1;
user_args = (char *) emalloc(size);
for (to = user_args, from = &NewArgv[1]; *from; from++) {
*to++ = ' ';
(void) strcpy(to, *from);
to += strlen(*from);
}
}
init_defaults();
pedantic = TRUE;
clearaliases = FALSE;
load_interfaces();
init_parser();
if (yyparse() || parse_error) {
(void) printf("doesn't parse.\n");
} else {
(void) printf("parses OK.\n\n");
if (top == 0)
(void) printf("User %s not found\n", pw.pw_name);
else while (top) {
(void) printf("[%d]\n", top-1);
(void) printf("user_match : %d\n", user_matches);
(void) printf("host_match : %d\n", host_matches);
(void) printf("cmnd_match : %d\n", cmnd_matches);
(void) printf("no_passwd : %d\n", no_passwd);
(void) printf("runas_match: %d\n", runas_matches);
(void) printf("runas : %s\n", *user_runas);
top--;
}
}
(void) printf("Matching Aliases --\n");
dumpaliases();
exit(0);
}