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41 * from: @(#)parseconf.c 8.1 (Berkeley) 6/4/93
43 * From: Utah Hdr: parseconf.c 3.1 92/07/06
44 * Author: Jeff Forys, University of Utah CSS
46 * @(#)parseconf.c 8.1 (Berkeley) 6/4/93
47 * $FreeBSD: src/libexec/rbootd/parseconf.c,v 1.9.2.1 2001/03/05 11:17:52 kris Exp $
50 #include <sys/param.h>
65 ** ParseConfig -- parse the config file into linked list of clients.
71 ** 1 on success, 0 otherwise.
74 ** - Linked list of clients will be (re)allocated.
77 ** - GetBootFiles() must be called before this routine
78 ** to create a linked list of default boot files.
89 int omask, linecnt = 0;
91 if (BootAny) /* ignore config file */
94 FreeClients(); /* delete old list of clients */
96 if ((fp = fopen(ConfigFile, "r")) == NULL) {
97 syslog(LOG_ERR, "ParseConfig: can't open config file (%s)",
103 * We've got to block SIGHUP to prevent reconfiguration while
104 * dealing with the linked list of Clients. This can be done
105 * when actually linking the new client into the list, but
106 * this could have unexpected results if the server was HUP'd
107 * whilst reconfiguring. Hence, it is done here.
109 omask = sigblock(sigmask(SIGHUP));
112 * GETSTR positions `bcp' at the start of the current token,
113 * and null terminates it. `cp' is positioned at the start
114 * of the next token. spaces & commas are separators.
116 #define GETSTR while (isspace(*cp) || *cp == ',') cp++; \
118 while (*cp && *cp!=',' && !isspace(*cp)) cp++; \
119 if (*cp) *cp++ = '\0'
122 * For each line, parse it into a new CLIENT struct.
124 while (fgets(line, C_LINELEN, fp) != NULL) {
125 linecnt++; /* line counter */
127 if (*line == '\0' || *line == '#') /* ignore comment */
130 if ((cp = strchr(line,'#')) != NULL) /* trash comments */
133 cp = line; /* init `cp' */
134 GETSTR; /* get RMP addr */
135 if (bcp == cp) /* all delimiters */
139 * Get an RMP address from a string. Abort on failure.
141 if ((addr = ParseAddr(bcp)) == NULL) {
143 "ParseConfig: line %d: can't parse <%s>",
148 if ((client = NewClient(addr)) == NULL) /* alloc new client */
151 GETSTR; /* get first file */
154 * If no boot files are spec'd, use the default list.
155 * Otherwise, validate each file (`bcp') against the
156 * list of boot-able files.
159 if (bcp == cp) /* no files spec'd */
160 for (; i < C_MAXFILE && BootFiles[i] != NULL; i++)
161 client->files[i] = BootFiles[i];
165 * For each boot file spec'd, make sure it's
166 * in our list. If so, include a pointer to
167 * it in the CLIENT's list of boot files.
170 if (j==C_MAXFILE||BootFiles[j]==NULL) {
171 syslog(LOG_ERR, "ParseConfig: line %d: no boot file (%s)",
175 if (STREQN(BootFiles[j], bcp)) {
180 syslog(LOG_ERR, "ParseConfig: line %d: too many boot files (%s)",
185 GETSTR; /* get next file */
189 * Restricted list of boot files were spec'd,
190 * however, none of them were found. Since we
191 * apparently cant let them boot "just anything",
192 * the entire record is invalidated.
201 * Link this client into the linked list of clients.
202 * SIGHUP has already been blocked.
205 client->next = Clients;
209 (void) fclose(fp); /* close config file */
211 (void) sigsetmask(omask); /* reset signal mask */
213 return(1); /* return success */
217 ** ParseAddr -- Parse a string containing an RMP address.
219 ** This routine is fairly liberal at parsing an RMP address. The
220 ** address must contain 6 octets consisting of between 0 and 2 hex
221 ** chars (upper/lower case) separated by colons. If two colons are
222 ** together (e.g. "::", the octet between them is recorded as being
223 ** zero. Hence, the following addrs are all valid and parse to the
226 ** 08:00:09:00:66:ad 8::9:0:66:AD 8::9::66:aD
228 ** For clarity, an RMP address is really an Ethernet address, but
229 ** since the HP boot code uses IEEE 802.3, it's really an IEEE
230 ** 802.3 address. Of course, all of these are identical.
233 ** str - string representation of an RMP address.
236 ** pointer to a static array of RMP_ADDRLEN bytes.
242 ** - The return value points to a static buffer; it must
243 ** be copied if it's to be saved.
248 static u_int8_t addr[RMP_ADDRLEN];
253 memset((char *)&addr[0], 0, RMP_ADDRLEN); /* zero static buffer */
256 for (cp = str; *cp; cp++) {
258 * A colon (`:') must be used to delimit each octet.
261 if (++part == RMP_ADDRLEN) /* too many parts */
268 * Convert hex character to an integer.
273 i = (isupper(*cp)? tolower(*cp): *cp) - 'a' + 10;
274 if (i < 10 || i > 15) /* not a hex char */
279 if (subpart > 2) /* too many hex chars */
286 if (part != (RMP_ADDRLEN-1)) /* too few parts */
293 ** GetBootFiles -- record list of files in current (boot) directory.
299 ** Number of boot files on success, 0 on failure.
302 ** Strings in `BootFiles' are freed/allocated.
305 ** - After this routine is called, ParseConfig() must be
306 ** called to re-order it's list of boot file pointers.
317 * Free the current list of boot files.
319 for (i = 0; i < C_MAXFILE && BootFiles[i] != NULL; i++) {
320 FreeStr(BootFiles[i]);
325 * Open current directory to read boot file names.
327 if ((dfd = opendir(".")) == NULL) { /* open BootDir */
328 syslog(LOG_ERR, "GetBootFiles: can't open directory (%s)\n",
334 * Read each boot file name and allocate space for it in the
335 * list of boot files (BootFiles). All boot files read after
336 * C_MAXFILE will be ignored.
339 for (dp = readdir(dfd); dp != NULL; dp = readdir(dfd)) {
340 if (stat(dp->d_name, &statb) < 0 ||
341 (statb.st_mode & S_IFMT) != S_IFREG)
345 "GetBootFiles: too many boot files (%s ignored)",
347 else if ((BootFiles[i] = NewStr(dp->d_name)) != NULL)
351 (void) closedir(dfd); /* close BootDir */
353 if (i == 0) /* cant find any boot files */
354 syslog(LOG_ERR, "GetBootFiles: no boot files (%s)\n", BootDir);