2 * Copyright (c) 1988, 1992 The University of Utah and the Center
3 * for Software Science (CSS).
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
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37 * from: @(#)parseconf.c 8.1 (Berkeley) 6/4/93
39 * From: Utah Hdr: parseconf.c 3.1 92/07/06
40 * Author: Jeff Forys, University of Utah CSS
42 * @(#)parseconf.c 8.1 (Berkeley) 6/4/93
43 * $FreeBSD: src/libexec/rbootd/parseconf.c,v 1.9.2.1 2001/03/05 11:17:52 kris Exp $
46 #include <sys/param.h>
61 ** ParseConfig -- parse the config file into linked list of clients.
67 ** 1 on success, 0 otherwise.
70 ** - Linked list of clients will be (re)allocated.
73 ** - GetBootFiles() must be called before this routine
74 ** to create a linked list of default boot files.
85 int omask, linecnt = 0;
87 if (BootAny) /* ignore config file */
90 FreeClients(); /* delete old list of clients */
92 if ((fp = fopen(ConfigFile, "r")) == NULL) {
93 syslog(LOG_ERR, "ParseConfig: can't open config file (%s)",
99 * We've got to block SIGHUP to prevent reconfiguration while
100 * dealing with the linked list of Clients. This can be done
101 * when actually linking the new client into the list, but
102 * this could have unexpected results if the server was HUP'd
103 * whilst reconfiguring. Hence, it is done here.
105 omask = sigblock(sigmask(SIGHUP));
108 * GETSTR positions `bcp' at the start of the current token,
109 * and null terminates it. `cp' is positioned at the start
110 * of the next token. spaces & commas are separators.
112 #define GETSTR while (isspace(*cp) || *cp == ',') cp++; \
114 while (*cp && *cp!=',' && !isspace(*cp)) cp++; \
115 if (*cp) *cp++ = '\0'
118 * For each line, parse it into a new CLIENT struct.
120 while (fgets(line, C_LINELEN, fp) != NULL) {
121 linecnt++; /* line counter */
123 if (*line == '\0' || *line == '#') /* ignore comment */
126 if ((cp = strchr(line,'#')) != NULL) /* trash comments */
129 cp = line; /* init `cp' */
130 GETSTR; /* get RMP addr */
131 if (bcp == cp) /* all delimiters */
135 * Get an RMP address from a string. Abort on failure.
137 if ((addr = ParseAddr(bcp)) == NULL) {
139 "ParseConfig: line %d: can't parse <%s>",
144 if ((client = NewClient(addr)) == NULL) /* alloc new client */
147 GETSTR; /* get first file */
150 * If no boot files are spec'd, use the default list.
151 * Otherwise, validate each file (`bcp') against the
152 * list of boot-able files.
155 if (bcp == cp) /* no files spec'd */
156 for (; i < C_MAXFILE && BootFiles[i] != NULL; i++)
157 client->files[i] = BootFiles[i];
161 * For each boot file spec'd, make sure it's
162 * in our list. If so, include a pointer to
163 * it in the CLIENT's list of boot files.
166 if (j==C_MAXFILE||BootFiles[j]==NULL) {
167 syslog(LOG_ERR, "ParseConfig: line %d: no boot file (%s)",
171 if (STREQN(BootFiles[j], bcp)) {
176 syslog(LOG_ERR, "ParseConfig: line %d: too many boot files (%s)",
181 GETSTR; /* get next file */
185 * Restricted list of boot files were spec'd,
186 * however, none of them were found. Since we
187 * apparently cant let them boot "just anything",
188 * the entire record is invalidated.
197 * Link this client into the linked list of clients.
198 * SIGHUP has already been blocked.
201 client->next = Clients;
205 (void) fclose(fp); /* close config file */
207 (void) sigsetmask(omask); /* reset signal mask */
209 return(1); /* return success */
213 ** ParseAddr -- Parse a string containing an RMP address.
215 ** This routine is fairly liberal at parsing an RMP address. The
216 ** address must contain 6 octets consisting of between 0 and 2 hex
217 ** chars (upper/lower case) separated by colons. If two colons are
218 ** together (e.g. "::", the octet between them is recorded as being
219 ** zero. Hence, the following addrs are all valid and parse to the
222 ** 08:00:09:00:66:ad 8::9:0:66:AD 8::9::66:aD
224 ** For clarity, an RMP address is really an Ethernet address, but
225 ** since the HP boot code uses IEEE 802.3, it's really an IEEE
226 ** 802.3 address. Of course, all of these are identical.
229 ** str - string representation of an RMP address.
232 ** pointer to a static array of RMP_ADDRLEN bytes.
238 ** - The return value points to a static buffer; it must
239 ** be copied if it's to be saved.
244 static u_int8_t addr[RMP_ADDRLEN];
249 memset((char *)&addr[0], 0, RMP_ADDRLEN); /* zero static buffer */
252 for (cp = str; *cp; cp++) {
254 * A colon (`:') must be used to delimit each octet.
257 if (++part == RMP_ADDRLEN) /* too many parts */
264 * Convert hex character to an integer.
269 i = (isupper(*cp)? tolower(*cp): *cp) - 'a' + 10;
270 if (i < 10 || i > 15) /* not a hex char */
275 if (subpart > 2) /* too many hex chars */
282 if (part != (RMP_ADDRLEN-1)) /* too few parts */
289 ** GetBootFiles -- record list of files in current (boot) directory.
295 ** Number of boot files on success, 0 on failure.
298 ** Strings in `BootFiles' are freed/allocated.
301 ** - After this routine is called, ParseConfig() must be
302 ** called to re-order it's list of boot file pointers.
313 * Free the current list of boot files.
315 for (i = 0; i < C_MAXFILE && BootFiles[i] != NULL; i++) {
316 FreeStr(BootFiles[i]);
321 * Open current directory to read boot file names.
323 if ((dfd = opendir(".")) == NULL) { /* open BootDir */
324 syslog(LOG_ERR, "GetBootFiles: can't open directory (%s)\n",
330 * Read each boot file name and allocate space for it in the
331 * list of boot files (BootFiles). All boot files read after
332 * C_MAXFILE will be ignored.
335 for (dp = readdir(dfd); dp != NULL; dp = readdir(dfd)) {
336 if (stat(dp->d_name, &statb) < 0 ||
337 (statb.st_mode & S_IFMT) != S_IFREG)
341 "GetBootFiles: too many boot files (%s ignored)",
343 else if ((BootFiles[i] = NewStr(dp->d_name)) != NULL)
347 (void) closedir(dfd); /* close BootDir */
349 if (i == 0) /* cant find any boot files */
350 syslog(LOG_ERR, "GetBootFiles: no boot files (%s)\n", BootDir);