208 lines
3.8 KiB
C
208 lines
3.8 KiB
C
/*
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* System configuration routines
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*
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* Written by Toshiharu OHNO (tony-o@iij.ad.jp)
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*
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* Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the Internet Initiative Japan, Inc. The name of the
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* IIJ may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Id: systems.c,v 1.3 1995/02/26 12:17:59 amurai Exp $
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*
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* TODO:
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*/
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#include "fsm.h"
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#include "vars.h"
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#include "ipcp.h"
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#include "pathnames.h"
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#include "vars.h"
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extern void DecodeCommand();
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static int uid, gid;
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static int euid, egid;
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static int usermode;
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void
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GetUid()
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{
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uid = getuid();
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gid = getgid();
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euid = geteuid();
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egid = getegid();
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usermode = 0;
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}
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static void
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SetUserId()
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{
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if (!usermode) {
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setreuid(euid, uid);
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setregid(egid, gid);
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usermode = 1;
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}
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}
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static void
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SetPppId()
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{
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if (usermode) {
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setreuid(uid, euid);
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setregid(gid, egid);
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usermode = 0;
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}
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}
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FILE *
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OpenSecret(file)
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char *file;
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{
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FILE *fp;
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char *cp;
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char line[100];
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fp = NULL;
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cp = getenv("HOME");
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if (cp) {
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SetUserId();
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sprintf(line, "%s/.%s", cp, file);
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fp = fopen(line, "r");
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}
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if (fp == NULL) {
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SetPppId();
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sprintf(line, "%s/%s",_PATH_PPP, file);
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fp = fopen(line, "r");
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}
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if (fp == NULL) {
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fprintf(stderr, "can't open %s.\n", line);
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SetPppId();
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return(NULL);
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}
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return(fp);
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}
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void
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CloseSecret(fp)
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FILE *fp;
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{
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fclose(fp);
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SetPppId();
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}
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int
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SelectSystem(name, file)
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char *name;
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char *file;
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{
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FILE *fp;
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char *cp, *wp;
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int n;
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int val = -1;
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u_char olauth;
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char line[200];
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fp = NULL;
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cp = getenv("HOME");
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if (cp) {
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SetUserId();
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sprintf(line, "%s/.%s", cp, file);
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fp = fopen(line, "r");
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}
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if (fp == NULL) {
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SetPppId(); /* fix from pdp@ark.jr3uom.iijnet.or.jp */
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sprintf(line, "%s/%s",_PATH_PPP, file);
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fp = fopen(line, "r");
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}
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if (fp == NULL) {
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fprintf(stderr, "can't open %s.\n", line);
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SetPppId();
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return(-1);
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}
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#ifdef DEBUG
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fprintf(stderr, "checking %s (%s).\n", name, line);
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#endif
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while (fgets(line, sizeof(line), fp)) {
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cp = line;
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switch (*cp) {
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case '#': /* comment */
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break;
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case ' ':
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case '\t':
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break;
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default:
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wp = strpbrk(cp, ":\n");
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*wp = '\0';
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if (strcmp(cp, name) == 0) {
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while (fgets(line, sizeof(line), fp)) {
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cp = line;
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if (*cp == ' ' || *cp == '\t') {
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n = strspn(cp, " \t");
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cp += n;
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#ifdef DEBUG
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fprintf(stderr, "%s", cp);
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#endif
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SetPppId();
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olauth = VarLocalAuth;
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VarLocalAuth = LOCAL_AUTH;
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DecodeCommand(cp, strlen(cp), 0);
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VarLocalAuth = olauth;
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SetUserId();
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} else if (*cp == '#') {
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continue;
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} else
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break;
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}
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fclose(fp);
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SetPppId();
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return(0);
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}
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break;
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}
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}
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fclose(fp);
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SetPppId();
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return(val);
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}
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int
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LoadCommand(list, argc, argv)
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struct cmdtab *list;
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int argc;
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char **argv;
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{
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char *name;
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if (argc > 0)
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name = *argv;
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else
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name = "default";
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if (SelectSystem(name, CONFFILE) < 0) {
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printf("%s: not found.\n", name);
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return(-1);
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}
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return(1);
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}
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extern struct in_addr ifnetmask;
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int
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SaveCommand(list, argc, argv)
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struct cmdtab *list;
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int argc;
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char **argv;
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{
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printf("save command is not implemented (yet).\n");
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return(1);
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}
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