/* * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * "Portions Copyright (c) 1999 Apple Computer, Inc. All Rights * Reserved. This file contains Original Code and/or Modifications of * Original Code as defined in and that are subject to the Apple Public * Source License Version 1.0 (the 'License'). You may not use this file * except in compliance with the License. Please obtain a copy of the * License at http://www.apple.com/publicsource and read it before using * this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License." * * @APPLE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1988, 1992 The University of Utah and the Center * for Software Science (CSS). * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * the Center for Software Science of the University of Utah Computer * Science Department. CSS requests users of this software to return * to css-dist@cs.utah.edu any improvements that they make and grant * CSS redistribution rights. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)parseconf.c 8.1 (Berkeley) 6/4/93 * * Utah $Hdr: parseconf.c 3.1 92/07/06$ * Author: Jeff Forys, University of Utah CSS */ #ifndef lint static char sccsid[] = "@(#)parseconf.c 8.1 (Berkeley) 6/4/93"; #endif /* not lint */ #include <sys/param.h> #include <sys/stat.h> #include <ctype.h> #include <dirent.h> #include <fcntl.h> #include <signal.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <syslog.h> #include "defs.h" /* ** ParseConfig -- parse the config file into linked list of clients. ** ** Parameters: ** None. ** ** Returns: ** 1 on success, 0 otherwise. ** ** Side Effects: ** - Linked list of clients will be (re)allocated. ** ** Warnings: ** - GetBootFiles() must be called before this routine ** to create a linked list of default boot files. */ int ParseConfig() { FILE *fp; CLIENT *client; u_char *addr; char line[C_LINELEN]; register char *cp, *bcp; register int i, j; int omask, linecnt = 0; if (BootAny) /* ignore config file */ return(1); FreeClients(); /* delete old list of clients */ if ((fp = fopen(ConfigFile, "r")) == NULL) { syslog(LOG_ERR, "ParseConfig: can't open config file (%s)", ConfigFile); return(0); } /* * We've got to block SIGHUP to prevent reconfiguration while * dealing with the linked list of Clients. This can be done * when actually linking the new client into the list, but * this could have unexpected results if the server was HUP'd * whilst reconfiguring. Hence, it is done here. */ omask = sigblock(sigmask(SIGHUP)); /* * GETSTR positions `bcp' at the start of the current token, * and null terminates it. `cp' is positioned at the start * of the next token. spaces & commas are separators. */ #define GETSTR while (isspace(*cp) || *cp == ',') cp++; \ bcp = cp; \ while (*cp && *cp!=',' && !isspace(*cp)) cp++; \ if (*cp) *cp++ = '\0' /* * For each line, parse it into a new CLIENT struct. */ while (fgets(line, C_LINELEN, fp) != NULL) { linecnt++; /* line counter */ if (*line == '\0' || *line == '#') /* ignore comment */ continue; if ((cp = index(line,'#')) != NULL) /* trash comments */ *cp = '\0'; cp = line; /* init `cp' */ GETSTR; /* get RMP addr */ if (bcp == cp) /* all delimiters */ continue; /* * Get an RMP address from a string. Abort on failure. */ if ((addr = ParseAddr(bcp)) == NULL) { syslog(LOG_ERR, "ParseConfig: line %d: cant parse <%s>", linecnt, bcp); continue; } if ((client = NewClient(addr)) == NULL) /* alloc new client */ continue; GETSTR; /* get first file */ /* * If no boot files are spec'd, use the default list. * Otherwise, validate each file (`bcp') against the * list of boot-able files. */ i = 0; if (bcp == cp) /* no files spec'd */ for (; i < C_MAXFILE && BootFiles[i] != NULL; i++) client->files[i] = BootFiles[i]; else { do { /* * For each boot file spec'd, make sure it's * in our list. If so, include a pointer to * it in the CLIENT's list of boot files. */ for (j = 0; ; j++) { if (j==C_MAXFILE||BootFiles[j]==NULL) { syslog(LOG_ERR, "ParseConfig: line %d: no boot file (%s)", linecnt, bcp); break; } if (STREQN(BootFiles[j], bcp)) { if (i < C_MAXFILE) client->files[i++] = BootFiles[j]; else syslog(LOG_ERR, "ParseConfig: line %d: too many boot files (%s)", linecnt, bcp); break; } } GETSTR; /* get next file */ } while (bcp != cp); /* * Restricted list of boot files were spec'd, * however, none of them were found. Since we * apparently cant let them boot "just anything", * the entire record is invalidated. */ if (i == 0) { FreeClient(client); continue; } } /* * Link this client into the linked list of clients. * SIGHUP has already been blocked. */ if (Clients) client->next = Clients; Clients = client; } (void) fclose(fp); /* close config file */ (void) sigsetmask(omask); /* reset signal mask */ return(1); /* return success */ } /* ** ParseAddr -- Parse a string containing an RMP address. ** ** This routine is fairly liberal at parsing an RMP address. The ** address must contain 6 octets consisting of between 0 and 2 hex ** chars (upper/lower case) separated by colons. If two colons are ** together (e.g. "::", the octet between them is recorded as being ** zero. Hence, the following addrs are all valid and parse to the ** same thing: ** ** 08:00:09:00:66:ad 8::9:0:66:AD 8::9::66:aD ** ** For clarity, an RMP address is really an Ethernet address, but ** since the HP boot code uses IEEE 802.3, it's really an IEEE ** 802.3 address. Of course, all of these are identical. ** ** Parameters: ** str - string representation of an RMP address. ** ** Returns: ** pointer to a static array of RMP_ADDRLEN bytes. ** ** Side Effects: ** None. ** ** Warnings: ** - The return value points to a static buffer; it must ** be copied if it's to be saved. ** - For speed, we assume a u_char consists of 8 bits. */ u_char * ParseAddr(str) char *str; { static u_char addr[RMP_ADDRLEN]; register char *cp; register unsigned i; register int part, subpart; bzero((char *)&addr[0], RMP_ADDRLEN); /* zero static buffer */ part = subpart = 0; for (cp = str; *cp; cp++) { /* * A colon (`:') must be used to delimit each octet. */ if (*cp == ':') { if (++part == RMP_ADDRLEN) /* too many parts */ return(NULL); subpart = 0; continue; } /* * Convert hex character to an integer. */ if (isdigit(*cp)) i = *cp - '0'; else { i = (isupper(*cp)? tolower(*cp): *cp) - 'a' + 10; if (i < 10 || i > 15) /* not a hex char */ return(NULL); } if (subpart++) { if (subpart > 2) /* too many hex chars */ return(NULL); addr[part] <<= 4; } addr[part] |= i; } if (part != (RMP_ADDRLEN-1)) /* too few parts */ return(NULL); return(&addr[0]); } /* ** GetBootFiles -- record list of files in current (boot) directory. ** ** Parameters: ** None. ** ** Returns: ** Number of boot files on success, 0 on failure. ** ** Side Effects: ** Strings in `BootFiles' are freed/allocated. ** ** Warnings: ** - After this routine is called, ParseConfig() must be ** called to re-order it's list of boot file pointers. */ int GetBootFiles() { DIR *dfd; struct stat statb; register struct dirent *dp; register int i; /* * Free the current list of boot files. */ for (i = 0; i < C_MAXFILE && BootFiles[i] != NULL; i++) { FreeStr(BootFiles[i]); BootFiles[i] = NULL; } /* * Open current directory to read boot file names. */ if ((dfd = opendir(".")) == NULL) { /* open BootDir */ syslog(LOG_ERR, "GetBootFiles: can't open directory (%s)\n", BootDir); return(0); } /* * Read each boot file name and allocate space for it in the * list of boot files (BootFiles). All boot files read after * C_MAXFILE will be ignored. */ i = 0; for (dp = readdir(dfd); dp != NULL; dp = readdir(dfd)) { if (stat(dp->d_name, &statb) < 0 || (statb.st_mode & S_IFMT) != S_IFREG) continue; if (i == C_MAXFILE) syslog(LOG_ERR, "GetBootFiles: too many boot files (%s ignored)", dp->d_name); else if ((BootFiles[i] = NewStr(dp->d_name)) != NULL) i++; } (void) closedir(dfd); /* close BootDir */ if (i == 0) /* cant find any boot files */ syslog(LOG_ERR, "GetBootFiles: no boot files (%s)\n", BootDir); return(i); }