304 lines
		
	
	
		
			7.2 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			304 lines
		
	
	
		
			7.2 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/*
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 * Copyright (c) 1997-2003 Kungliga Tekniska Högskolan
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 * (Royal Institute of Technology, Stockholm, Sweden).
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 *
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * 3. Neither the name of the Institute nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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RCSID("$Id$");
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#endif
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#include <ctype.h>
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#ifdef KRB5
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#include <krb5.h>
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#endif
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#include <kafs.h>
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#include <roken.h>
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#include <getarg.h>
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#include <err.h>
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static int help_flag;
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static int version_flag;
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static getarg_strings cells;
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static char *realm;
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static getarg_strings files;
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static int unlog_flag;
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static int verbose;
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#ifdef KRB5
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static char *client_string;
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static char *cache_string;
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static int use_krb5 = 1;
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#endif
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struct getargs args[] = {
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    { "cell",	'c', arg_strings, &cells, "cells to get tokens for", "cell" },
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    { "file",	'p', arg_strings, &files, "files to get tokens for", "path" },
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    { "realm",	'k', arg_string, &realm, "realm for afs cell", "realm" },
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    { "unlog",	'u', arg_flag, &unlog_flag, "remove tokens", NULL },
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#ifdef KRB5
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    { "principal",'P',arg_string,&client_string,"principal to use","principal"},
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    { "cache",   0,  arg_string, &cache_string, "ccache to use", "cache"},
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    { "v5",	 0,  arg_negative_flag, &use_krb5, "don't use Kerberos 5",
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      NULL },
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#endif
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    { "verbose",'v', arg_flag, &verbose, NULL, NULL },
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    { "version", 0,  arg_flag, &version_flag, NULL, NULL },
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    { "help",	'h', arg_flag, &help_flag, NULL, NULL },
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};
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static int num_args = sizeof(args) / sizeof(args[0]);
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#ifdef KRB5
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krb5_context context;
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krb5_ccache id;
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#endif
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static const char *
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expand_one_file(FILE *f, const char *cell)
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{
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    static char buf[1024];
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    char *p;
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    while (fgets (buf, sizeof(buf), f) != NULL) {
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	if(buf[0] == '>') {
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	    for(p = buf; *p && !isspace((unsigned char)*p) && *p != '#'; p++)
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		;
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	    *p = '\0';
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	    if(strncmp(buf + 1, cell, strlen(cell)) == 0)
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		return buf + 1;
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	}
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	buf[0] = '\0';
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    }
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    return NULL;
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}
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static const char *
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expand_cell_name(const char *cell)
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{
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    FILE *f;
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    const char *c;
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    const char **fn, *fns[] = { _PATH_CELLSERVDB,
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				_PATH_ARLA_CELLSERVDB,
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				_PATH_OPENAFS_DEBIAN_CELLSERVDB,
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				_PATH_ARLA_DEBIAN_CELLSERVDB,
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				NULL };
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    for(fn = fns; *fn; fn++) {
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	f = fopen(*fn, "r");
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	if(f == NULL)
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	    continue;
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	c = expand_one_file(f, cell);
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	fclose(f);
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	if(c)
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	    return c;
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    }
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    return cell;
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}
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static void
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usage(int ecode)
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{
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    arg_printusage(args, num_args, NULL, "[cell|path]...");
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    exit(ecode);
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}
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struct cell_list {
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    char *cell;
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    struct cell_list *next;
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} *cell_list;
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static int
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afslog_cell(const char *cell, int expand)
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{
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    struct cell_list *p, **q;
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    const char *c = cell;
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    if(expand){
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	c = expand_cell_name(cell);
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	if(c == NULL){
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	    warnx("No cell matching \"%s\" found.", cell);
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	    return -1;
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	}
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	if(verbose && strcmp(c, cell) != 0)
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	    warnx("Cell \"%s\" expanded to \"%s\"", cell, c);
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    }
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    /* add to list of cells to get tokens for, and also remove
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       duplicates; the actual afslog takes place later */
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    for(p = cell_list, q = &cell_list; p; q = &p->next, p = p->next)
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	if(strcmp(p->cell, c) == 0)
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	    return 0;
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    p = malloc(sizeof(*p));
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    if(p == NULL)
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	return -1;
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    p->cell = strdup(c);
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    if(p->cell == NULL) {
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	free(p);
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	return -1;
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    }
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    p->next = NULL;
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    *q = p;
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    return 0;
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}
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static int
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afslog_file(const char *path)
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{
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    char cell[64];
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    if(k_afs_cell_of_file(path, cell, sizeof(cell))){
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	warnx("No cell found for file \"%s\".", path);
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	return -1;
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    }
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    if(verbose)
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	warnx("File \"%s\" lives in cell \"%s\"", path, cell);
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    return afslog_cell(cell, 0);
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}
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static int
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do_afslog(const char *cell)
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{
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    int k5ret;
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    k5ret = 0;
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#ifdef KRB5
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    if(context != NULL && id != NULL && use_krb5) {
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	k5ret = krb5_afslog(context, id, cell, realm);
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	if(k5ret == 0)
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	    return 0;
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    }
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#endif
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    if (cell == NULL)
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	cell = "<default cell>";
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#ifdef KRB5
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    if (k5ret)
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	krb5_warn(context, k5ret, "krb5_afslog(%s)", cell);
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#endif
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    if (k5ret)
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	return 1;
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    return 0;
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}
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static void
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log_func(void *ctx, const char *str)
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{
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    fprintf(stderr, "%s\n", str);
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}
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int
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main(int argc, char **argv)
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{
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    int optidx = 0;
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    int i;
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    int num;
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    int ret = 0;
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    int failed = 0;
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    struct cell_list *p;
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    setprogname(argv[0]);
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    if(getarg(args, num_args, argc, argv, &optidx))
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	usage(1);
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    if(help_flag)
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	usage(0);
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    if(version_flag) {
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	print_version(NULL);
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	exit(0);
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    }
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    if(!k_hasafs())
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	errx(1, "AFS does not seem to be present on this machine");
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    if(unlog_flag){
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	k_unlog();
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	exit(0);
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    }
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#ifdef KRB5
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    ret = krb5_init_context(&context);
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    if (ret) {
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	context = NULL;
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    } else {
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	if (client_string) {
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	    krb5_principal client;
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	    ret = krb5_parse_name(context, client_string, &client);
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	    if (ret == 0)
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		ret = krb5_cc_cache_match(context, client, &id);
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	    if (ret)
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		id = NULL;
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	}
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	if (id == NULL && cache_string) {
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	    if(krb5_cc_resolve(context, cache_string, &id) != 0) {
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		krb5_warnx(context, "failed to open kerberos 5 cache '%s'",
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			   cache_string);
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		id = NULL;
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	    }
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	}
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	if (id == NULL)
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	    if(krb5_cc_default(context, &id) != 0)
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		id = NULL;
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    }
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#endif
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    if (verbose)
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	kafs_set_verbose(log_func, NULL);
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    num = 0;
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    for(i = 0; i < files.num_strings; i++){
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	afslog_file(files.strings[i]);
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	num++;
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    }
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    free_getarg_strings (&files);
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    for(i = 0; i < cells.num_strings; i++){
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	afslog_cell(cells.strings[i], 1);
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	num++;
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    }
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    free_getarg_strings (&cells);
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    for(i = optidx; i < argc; i++){
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	num++;
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	if(strcmp(argv[i], ".") == 0 ||
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	   strcmp(argv[i], "..") == 0 ||
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	   strchr(argv[i], '/') ||
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	   access(argv[i], F_OK) == 0)
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	    afslog_file(argv[i]);
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	else
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	    afslog_cell(argv[i], 1);
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    }
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    if(num == 0) {
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	if(do_afslog(NULL))
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	    failed++;
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    } else
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	for(p = cell_list; p; p = p->next) {
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	    if(verbose)
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		warnx("Getting tokens for cell \"%s\"", p->cell);
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	    if(do_afslog(p->cell))
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		failed++;
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    }
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    return failed;
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}
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