Toss into attic stuff we don't use.

This commit is contained in:
Mark Murray 2001-04-14 09:48:26 +00:00
parent 1a6a661032
commit b7ffbfee87
4 changed files with 0 additions and 940 deletions

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@ -1,11 +0,0 @@
2000-12-11 Assar Westerlund <assar@sics.se>
* Makefile.am (libkdfs_la_LDFLAGS): set version to 0:1:0
2000-07-02 Assar Westerlund <assar@sics.se>
* k5dfspag.c: use krb5.h instead of krb5_locl.h
* initial import from Ake Sandgren <ake@cs.umu.se>

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lib_LTLIBRARIES = libkdfs.la
libkdfs_la_SOURCES = \
k5dfspag.c
libkdfs_la_LDFLAGS = -version-info 0:1:0

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/*
* lib/krb5/os/k5dfspag.c
*
* New Kerberos module to issue the DFS PAG syscalls.
* It also contains the routine to fork and exec the
* k5dcecon routine to do most of the work.
*
* This file is designed to be as independent of DCE
* and DFS as possible. The only dependencies are on
* the syscall numbers. If DFS not running or not installed,
* the sig handlers will catch and the signal and
* will continue.
*
* krb5_dfs_newpag and krb5_dfs_getpag should not be real
* Kerberos routines, since they should be setpag and getpag
* in the DCE library, but without the DCE baggage.
* Thus they don't have context, and don't return a krb5 error.
*
*
*
* krb5_dfs_pag()
*/
#include <krb5.h>
#ifdef DCE
#include <stdio.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <sys/param.h>
/* Only run this DFS PAG code on systems with POSIX
* All that we are interested in dor:, AIX 4.x,
* Solaris 2.5.x, HPUX 10.x Even SunOS 4.1.4, AIX 3.2.5
* and SGI 5.3 are OK. This simplifies
* the build/configure which I don't want to change now.
* All of them also have waitpid as well.
*/
#define POSIX_SETJMP
#define POSIX_SIGNALS
#define HAVE_WAITPID
#include <signal.h>
#include <setjmp.h>
#ifndef POSIX_SETJMP
#undef sigjmp_buf
#undef sigsetjmp
#undef siglongjmp
#define sigjmp_buf jmp_buf
#define sigsetjmp(j,s) setjmp(j)
#define siglongjmp longjmp
#endif
#ifdef POSIX_SIGNALS
typedef struct sigaction handler;
#define handler_init(H,F) (sigemptyset(&(H).sa_mask), \
(H).sa_flags=0, \
(H).sa_handler=(F))
#define handler_swap(S,NEW,OLD) sigaction(S, &NEW, &OLD)
#define handler_set(S,OLD) sigaction(S, &OLD, NULL)
#else
typedef sigtype (*handler)();
#define handler_init(H,F) ((H) = (F))
#define handler_swap(S,NEW,OLD) ((OLD) = signal ((S), (NEW)))
#define handler_set(S,OLD) (signal ((S), (OLD)))
#endif
#define krb5_sigtype void
#define WAIT_USES_INT
typedef krb5_sigtype sigtype;
/*
* Need some syscall numbers based on different systems.
* These are based on:
* HPUX 10.10 /opt/dce/include/dcedfs/syscall.h
* Solaris 2.5 /opt/dcelocal/share/include/dcedfs/syscall.h
* AIX 4.2 - needs some funny games with load and kafs_syscall
* to get the kernel extentions. There should be a better way!
*
* DEE 5/27/97
*
*/
#define AFSCALL_SETPAG 2
#define AFSCALL_GETPAG 11
#if defined(sun)
#define AFS_SYSCALL 72
#elif defined(hpux)
/* assume HPUX 10 + or is it 50 */
#define AFS_SYSCALL 326
#elif defined(_AIX)
#ifndef DPAGAIX
#define DPAGAIX LIBEXECDIR ## "/dpagaix"
#endif
int *load();
static int (*dpagaix)(int, int, int, int, int, int) = 0;
#elif defined(sgi) || defined(_sgi)
#define AFS_SYSCALL 206+1000
#else
#define AFS_SYSCALL (Unknown_DFS_AFS_SYSCALL)
#endif
#ifdef WAIT_USES_INT
int wait_status;
#else /* WAIT_USES_INT */
union wait wait_status;
#endif /* WAIT_USES_INT */
#ifndef K5DCECON
#define K5DCECON LIBEXECDIR ## "/k5dcecon"
#endif
/*
* mysig()
*
* signal handler if DFS not running
*
*/
static sigjmp_buf setpag_buf;
static sigtype mysig()
{
siglongjmp(setpag_buf, 1);
}
/*
* krb5_dfs_pag_syscall()
*
* wrapper for the syscall with signal handlers
*
*/
static int krb5_dfs_pag_syscall(opt1,opt2)
int opt1;
int opt2;
{
handler sa1, osa1;
handler sa2, osa2;
int pag = -2;
handler_init (sa1, mysig);
handler_init (sa2, mysig);
handler_swap (SIGSYS, sa1, osa1);
handler_swap (SIGSEGV, sa2, osa2);
if (sigsetjmp(setpag_buf, 1) == 0) {
#if defined(_AIX)
if (!dpagaix)
dpagaix = load(DPAGAIX, 0, 0);
if (dpagaix)
pag = (*dpagaix)(opt1, opt2, 0, 0, 0, 0);
#else
pag = syscall(AFS_SYSCALL, opt1, opt2, 0, 0, 0, 0);
#endif
handler_set (SIGSYS, osa1);
handler_set (SIGSEGV, osa2);
return(pag);
}
/* syscall failed! return 0 */
handler_set (SIGSYS, osa1);
handler_set (SIGSEGV, osa2);
return(-2);
}
/*
* krb5_dfs_newpag()
*
* issue a DCE/DFS setpag system call to set the newpag
* for this process. This takes advantage of a currently
* undocumented feature of the Transarc port of DFS.
* Even in DCE 1.2.2 for which the source is available,
* (but no vendors have released), this feature is not
* there, but it should be, or could be added.
* If new_pag is zero, then the syscall will get a new pag
* and return its value.
*/
int krb5_dfs_newpag(new_pag)
int new_pag;
{
return(krb5_dfs_pag_syscall(AFSCALL_SETPAG, new_pag));
}
/*
* krb5_dfs_getpag()
*
* get the current PAG. Used mostly as a test.
*/
int krb5_dfs_getpag()
{
return(krb5_dfs_pag_syscall(AFSCALL_GETPAG, 0));
}
/*
* krb5_dfs_pag()
*
* Given a principal and local username,
* fork and exec the k5dcecon module to create
* refresh or join a new DCE/DFS
* Process Authentication Group (PAG)
*
* This routine should be called after krb5_kuserok has
* determined that this combination of local user and
* principal are acceptable for the local host.
*
* It should also be called after a forwarded ticket has
* been received, and the KRB5CCNAME environment variable
* has been set to point at it. k5dcecon will convert this
* to a new DCE context and a new pag and replace KRB5CCNAME
* in the environment.
*
* If there is no forwarded ticket, k5dcecon will attempt
* to join an existing PAG for the same principal and local
* user.
*
* And it should be called before access to the home directory
* as this may be in DFS, not accessable by root, and require
* the PAG to have been setup.
*
* The krb5_afs_pag can be called after this routine to
* use the the cache obtained by k5dcecon to get an AFS token.
* DEE - 7/97
*/
int krb5_dfs_pag(context, flag, principal, luser)
krb5_context context;
int flag; /* 1 if a forwarded TGT is to be used */
krb5_principal principal;
const char *luser;
{
struct stat stx;
int fd[2];
int i,j;
int pid;
int new_pag;
int pag;
char newccname[MAXPATHLEN] = "";
char *princ;
int err;
struct sigaction newsig, oldsig;
#ifdef WAIT_USES_INT
int wait_status;
#else /* WAIT_USES_INT */
union wait wait_status;
#endif /* WAIT_USES_INT */
if (krb5_unparse_name(context, principal, &princ))
return(0);
/* test if DFS is running or installed */
if (krb5_dfs_getpag() == -2)
return(0); /* DFS not running, dont try */
if (pipe(fd) == -1)
return(0);
/* Make sure that telnetd.c's SIGCHLD action don't happen right now... */
memset((char *)&newsig, 0, sizeof(newsig));
newsig.sa_handler = SIG_IGN;
sigaction(SIGCHLD, &newsig, &oldsig);
pid = fork();
if (pid <0)
return(0);
if (pid == 0) { /* child process */
close(1); /* close stdout */
dup(fd[1]); /* point stdout at pipe here */
close(fd[0]); /* don't use end of pipe here */
close(fd[1]); /* pipe now as stdout */
execl(K5DCECON, "k5dcecon",
(flag) ? "-f" : "-s" ,
"-l", luser,
"-p", princ, (char *)0);
exit(127); /* incase execl fails */
}
/* parent, wait for child to finish */
close(fd[1]); /* dont need this end of pipe */
/* #if defined(sgi) || defined(_sgi) */
/* wait_status.w_status = 0; */
/* waitpid((pid_t) pid, &wait_status.w_status, 0); */
/* #else */
wait_status = 0;
#ifdef HAVE_WAITPID
err = waitpid((pid_t) pid, &wait_status, 0);
#else /* HAVE_WAITPID */
err = wait4(pid, &wait_status, 0, (struct rusage *) NULL);
#endif /* HAVE_WAITPID */
/* #endif */
sigaction(SIGCHLD, &oldsig, 0);
if (WIFEXITED(wait_status)){
if (WEXITSTATUS(wait_status) == 0) {
i = 1;
j = 0;
while (i != 0) {
i = read(fd[0], &newccname[j], sizeof(newccname)-1-j);
if ( i > 0)
j += i;
if (j >= sizeof(newccname)-1)
i = 0;
}
close(fd[0]);
if (j > 0) {
newccname[j] = '\0';
esetenv("KRB5CCNAME",newccname,1);
sscanf(&newccname[j-8],"%8x",&new_pag);
if (new_pag && strncmp("FILE:/opt/dcelocal/var/security/creds/dcecred_", newccname, 46) == 0) {
if((pag = krb5_dfs_newpag(new_pag)) != -2) {
return(pag);
}
}
}
}
}
return(0); /* something not right */
}
#else /* DCE */
/*
* krb5_dfs_pag - dummy version for the lib for systems
* which don't have DFS, or the needed setpag kernel code.
*/
krb5_boolean
krb5_dfs_pag(context, principal, luser)
krb5_context context;
krb5_principal principal;
const char *luser;
{
return(0);
}
#endif /* DCE */