2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1988, 1992 The University of Utah and the Center
5 * for Software Science (CSS).
6 * Copyright (c) 1992, 1993
7 * The Regents of the University of California. All rights reserved.
9 * This code is derived from software contributed to Berkeley by
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39 * from: @(#)parseconf.c 8.1 (Berkeley) 6/4/93
41 * From: Utah Hdr: parseconf.c 3.1 92/07/06
42 * Author: Jeff Forys, University of Utah CSS
47 static const char sccsid[] = "@(#)parseconf.c 8.1 (Berkeley) 6/4/93";
49 static const char rcsid[] =
53 #include <sys/param.h>
68 ** ParseConfig -- parse the config file into linked list of clients.
74 ** 1 on success, 0 otherwise.
77 ** - Linked list of clients will be (re)allocated.
80 ** - GetBootFiles() must be called before this routine
81 ** to create a linked list of default boot files.
92 int omask, linecnt = 0;
94 if (BootAny) /* ignore config file */
97 FreeClients(); /* delete old list of clients */
99 if ((fp = fopen(ConfigFile, "r")) == NULL) {
100 syslog(LOG_ERR, "ParseConfig: can't open config file (%s)",
106 * We've got to block SIGHUP to prevent reconfiguration while
107 * dealing with the linked list of Clients. This can be done
108 * when actually linking the new client into the list, but
109 * this could have unexpected results if the server was HUP'd
110 * whilst reconfiguring. Hence, it is done here.
112 omask = sigblock(sigmask(SIGHUP));
115 * GETSTR positions `bcp' at the start of the current token,
116 * and null terminates it. `cp' is positioned at the start
117 * of the next token. spaces & commas are separators.
119 #define GETSTR while (isspace(*cp) || *cp == ',') cp++; \
121 while (*cp && *cp!=',' && !isspace(*cp)) cp++; \
122 if (*cp) *cp++ = '\0'
125 * For each line, parse it into a new CLIENT struct.
127 while (fgets(line, C_LINELEN, fp) != NULL) {
128 linecnt++; /* line counter */
130 if (*line == '\0' || *line == '#') /* ignore comment */
133 if ((cp = strchr(line,'#')) != NULL) /* trash comments */
136 cp = line; /* init `cp' */
137 GETSTR; /* get RMP addr */
138 if (bcp == cp) /* all delimiters */
142 * Get an RMP address from a string. Abort on failure.
144 if ((addr = ParseAddr(bcp)) == NULL) {
146 "ParseConfig: line %d: can't parse <%s>",
151 if ((client = NewClient(addr)) == NULL) /* alloc new client */
154 GETSTR; /* get first file */
157 * If no boot files are spec'd, use the default list.
158 * Otherwise, validate each file (`bcp') against the
159 * list of boot-able files.
162 if (bcp == cp) /* no files spec'd */
163 for (; i < C_MAXFILE && BootFiles[i] != NULL; i++)
164 client->files[i] = BootFiles[i];
168 * For each boot file spec'd, make sure it's
169 * in our list. If so, include a pointer to
170 * it in the CLIENT's list of boot files.
173 if (j==C_MAXFILE||BootFiles[j]==NULL) {
174 syslog(LOG_ERR, "ParseConfig: line %d: no boot file (%s)",
178 if (STREQN(BootFiles[j], bcp)) {
183 syslog(LOG_ERR, "ParseConfig: line %d: too many boot files (%s)",
188 GETSTR; /* get next file */
192 * Restricted list of boot files were spec'd,
193 * however, none of them were found. Since we
194 * apparently can't let them boot "just anything",
195 * the entire record is invalidated.
204 * Link this client into the linked list of clients.
205 * SIGHUP has already been blocked.
208 client->next = Clients;
212 (void) fclose(fp); /* close config file */
214 (void) sigsetmask(omask); /* reset signal mask */
216 return(1); /* return success */
220 ** ParseAddr -- Parse a string containing an RMP address.
222 ** This routine is fairly liberal at parsing an RMP address. The
223 ** address must contain 6 octets consisting of between 0 and 2 hex
224 ** chars (upper/lower case) separated by colons. If two colons are
225 ** together (e.g. "::", the octet between them is recorded as being
226 ** zero. Hence, the following addrs are all valid and parse to the
229 ** 08:00:09:00:66:ad 8::9:0:66:AD 8::9::66:aD
231 ** For clarity, an RMP address is really an Ethernet address, but
232 ** since the HP boot code uses IEEE 802.3, it's really an IEEE
233 ** 802.3 address. Of course, all of these are identical.
236 ** str - string representation of an RMP address.
239 ** pointer to a static array of RMP_ADDRLEN bytes.
245 ** - The return value points to a static buffer; it must
246 ** be copied if it's to be saved.
251 static u_int8_t addr[RMP_ADDRLEN];
256 memset((char *)&addr[0], 0, RMP_ADDRLEN); /* zero static buffer */
259 for (cp = str; *cp; cp++) {
261 * A colon (`:') must be used to delimit each octet.
264 if (++part == RMP_ADDRLEN) /* too many parts */
271 * Convert hex character to an integer.
276 i = (isupper(*cp)? tolower(*cp): *cp) - 'a' + 10;
277 if (i < 10 || i > 15) /* not a hex char */
282 if (subpart > 2) /* too many hex chars */
289 if (part != (RMP_ADDRLEN-1)) /* too few parts */
296 ** GetBootFiles -- record list of files in current (boot) directory.
302 ** Number of boot files on success, 0 on failure.
305 ** Strings in `BootFiles' are freed/allocated.
308 ** - After this routine is called, ParseConfig() must be
309 ** called to re-order it's list of boot file pointers.
320 * Free the current list of boot files.
322 for (i = 0; i < C_MAXFILE && BootFiles[i] != NULL; i++) {
323 FreeStr(BootFiles[i]);
328 * Open current directory to read boot file names.
330 if ((dfd = opendir(".")) == NULL) { /* open BootDir */
331 syslog(LOG_ERR, "GetBootFiles: can't open directory (%s)\n",
337 * Read each boot file name and allocate space for it in the
338 * list of boot files (BootFiles). All boot files read after
339 * C_MAXFILE will be ignored.
342 for (dp = readdir(dfd); dp != NULL; dp = readdir(dfd)) {
343 if (stat(dp->d_name, &statb) < 0 ||
344 (statb.st_mode & S_IFMT) != S_IFREG)
348 "GetBootFiles: too many boot files (%s ignored)",
350 else if ((BootFiles[i] = NewStr(dp->d_name)) != NULL)
354 (void) closedir(dfd); /* close BootDir */
356 if (i == 0) /* can't find any boot files */
357 syslog(LOG_ERR, "GetBootFiles: no boot files (%s)\n", BootDir);