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-rw-r--r--src/main/files.c361
1 files changed, 361 insertions, 0 deletions
diff --git a/src/main/files.c b/src/main/files.c
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+/*
+ * files.c Read config files into memory.
+ *
+ * Version: $Id$
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ *
+ * Copyright 2000,2006 The FreeRADIUS server project
+ * Copyright 2000 Miquel van Smoorenburg <miquels@cistron.nl>
+ * Copyright 2000 Alan DeKok <aland@ox.org>
+ */
+
+RCSID("$Id$")
+
+#include <freeradius-devel/radiusd.h>
+#include <freeradius-devel/rad_assert.h>
+
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include <fcntl.h>
+
+/*
+ * Debug code.
+ */
+#if 0
+static void debug_pair_list(PAIR_LIST *pl)
+{
+ VALUE_PAIR *vp;
+
+ while(pl) {
+ printf("Pair list: %s\n", pl->name);
+ printf("** Check:\n");
+ for(vp = pl->check; vp; vp = vp->next) {
+ printf(" ");
+ fprint_attr_val(stdout, vp);
+ printf("\n");
+ }
+ printf("** Reply:\n");
+ for(vp = pl->reply; vp; vp = vp->next) {
+ printf(" ");
+ fprint_attr_val(stdout, vp);
+ printf("\n");
+ }
+ pl = pl->next;
+ }
+}
+#endif
+
+/*
+ * Free a PAIR_LIST
+ */
+void pairlist_free(PAIR_LIST **pl)
+{
+ talloc_free(*pl);
+ *pl = NULL;
+}
+
+
+#define FIND_MODE_NAME 0
+#define FIND_MODE_WANT_REPLY 1
+#define FIND_MODE_HAVE_REPLY 2
+
+/*
+ * Read the users, huntgroups or hints file.
+ * Return a PAIR_LIST.
+ */
+int pairlist_read(TALLOC_CTX *ctx, char const *file, PAIR_LIST **list, int complain)
+{
+ FILE *fp;
+ int mode = FIND_MODE_NAME;
+ char entry[256];
+ char buffer[8192];
+ char const *ptr;
+ VALUE_PAIR *check_tmp = NULL;
+ VALUE_PAIR *reply_tmp = NULL;
+ PAIR_LIST *pl = NULL, *t;
+ PAIR_LIST **last = &pl;
+ int order = 0;
+ int lineno = 0;
+ int entry_lineno = 0;
+ FR_TOKEN parsecode;
+#ifdef HAVE_REGEX_H
+ VALUE_PAIR *vp;
+ vp_cursor_t cursor;
+#endif
+ char newfile[8192];
+
+ DEBUG2("reading pairlist file %s", file);
+
+ /*
+ * Open the file. The error message should be a little
+ * more useful...
+ */
+ if ((fp = fopen(file, "r")) == NULL) {
+ if (!complain)
+ return -1;
+ ERROR("Couldn't open %s for reading: %s",
+ file, fr_syserror(errno));
+ return -1;
+ }
+
+ /*
+ * Read the entire file into memory for speed.
+ */
+ while (fgets(buffer, sizeof(buffer), fp) != NULL) {
+ lineno++;
+
+ if (!feof(fp) && (strchr(buffer, '\n') == NULL)) {
+ fclose(fp);
+ ERROR("%s[%d]: line too long", file, lineno);
+ pairlist_free(&pl);
+ return -1;
+ }
+
+ /*
+ * If the line contains nothing but whitespace,
+ * ignore it.
+ */
+ ptr = buffer;
+ while (isspace((uint8_t) *ptr)) ptr++;
+
+ if (*ptr == '#' || *ptr == '\n' || !*ptr) continue;
+
+parse_again:
+ if (mode == FIND_MODE_NAME) {
+ /*
+ * The user's name MUST be the first text on the line.
+ */
+ if (isspace((uint8_t) buffer[0])) {
+ ERROR("%s[%d]: Entry does not begin with a user name",
+ file, lineno);
+ fclose(fp);
+ return -1;
+ }
+
+ /*
+ * Get the name.
+ */
+ ptr = buffer;
+ getword(&ptr, entry, sizeof(entry), false);
+ entry_lineno = lineno;
+
+ /*
+ * Include another file if we see
+ * $INCLUDE filename
+ */
+ if (strcasecmp(entry, "$INCLUDE") == 0) {
+ while (isspace((uint8_t) *ptr)) ptr++;
+
+ /*
+ * If it's an absolute pathname,
+ * then use it verbatim.
+ *
+ * If not, then make the $include
+ * files *relative* to the current
+ * file.
+ */
+ if (FR_DIR_IS_RELATIVE(ptr)) {
+ char *p;
+
+ strlcpy(newfile, file,
+ sizeof(newfile));
+ p = strrchr(newfile, FR_DIR_SEP);
+ if (!p) {
+ p = newfile + strlen(newfile);
+ *p = FR_DIR_SEP;
+ }
+ getword(&ptr, p + 1, sizeof(newfile) - 1 - (p - newfile), false);
+ } else {
+ getword(&ptr, newfile, sizeof(newfile), false);
+ }
+
+ t = NULL;
+
+ if (pairlist_read(ctx, newfile, &t, 0) != 0) {
+ pairlist_free(&pl);
+ ERROR("%s[%d]: Could not open included file %s: %s",
+ file, lineno, newfile, fr_syserror(errno));
+ fclose(fp);
+ return -1;
+ }
+ *last = t;
+
+ /*
+ * t may be NULL, it may have one
+ * entry, or it may be a linked list
+ * of entries. Go to the end of the
+ * list.
+ */
+ while (*last) {
+ (*last)->order = order++;
+ last = &((*last)->next);
+ }
+ continue;
+ } /* $INCLUDE ... */
+
+ /*
+ * Parse the check values
+ */
+ rad_assert(check_tmp == NULL);
+ rad_assert(reply_tmp == NULL);
+ parsecode = fr_pair_list_afrom_str(ctx, ptr, &check_tmp);
+ if (parsecode == T_INVALID) {
+ pairlist_free(&pl);
+ ERROR("%s[%d]: Parse error (check) for entry %s: %s",
+ file, lineno, entry, fr_strerror());
+ fclose(fp);
+ return -1;
+ }
+
+ if (parsecode != T_EOL) {
+ pairlist_free(&pl);
+ talloc_free(check_tmp);
+ ERROR("%s[%d]: Invalid text after check attributes for entry %s",
+ file, lineno, entry);
+ fclose(fp);
+ return -1;
+ }
+
+#ifdef HAVE_REGEX_H
+ /*
+ * Do some more sanity checks.
+ */
+ for (vp = fr_cursor_init(&cursor, &check_tmp);
+ vp;
+ vp = fr_cursor_next(&cursor)) {
+ if (((vp->op == T_OP_REG_EQ) ||
+ (vp->op == T_OP_REG_NE)) &&
+ (vp->da->type != PW_TYPE_STRING)) {
+ pairlist_free(&pl);
+ talloc_free(check_tmp);
+ ERROR("%s[%d]: Cannot use regular expressions for non-string attributes in entry %s",
+ file, lineno, entry);
+ fclose(fp);
+ return -1;
+ }
+ }
+#endif
+
+ /*
+ * The reply MUST be on a new line.
+ */
+ mode = FIND_MODE_WANT_REPLY;
+ continue;
+ }
+
+ /*
+ * We COULD have a reply, OR we could have a new entry.
+ */
+ if (mode == FIND_MODE_WANT_REPLY) {
+ if (!isspace((uint8_t) buffer[0])) goto create_entry;
+
+ mode = FIND_MODE_HAVE_REPLY;
+ }
+
+ /*
+ * mode == FIND_MODE_HAVE_REPLY
+ */
+
+ /*
+ * The previous line ended with a comma, and then
+ * we have the start of a new entry!
+ */
+ if (!isspace((uint8_t) buffer[0])) {
+ trailing_comma:
+ pairlist_free(&pl);
+ talloc_free(check_tmp);
+ talloc_free(reply_tmp);
+ ERROR("%s[%d]: Invalid comma after the reply attributes. Please delete it.",
+ file, lineno);
+ fclose(fp);
+ return -1;
+ }
+
+ /*
+ * Parse the reply values. If there's a trailing
+ * comma, keep parsing the reply values.
+ */
+ parsecode = fr_pair_list_afrom_str(ctx, buffer, &reply_tmp);
+ if (parsecode == T_COMMA) {
+ continue;
+ }
+
+ /*
+ * We expect an EOL. Anything else is an error.
+ */
+ if (parsecode != T_EOL) {
+ pairlist_free(&pl);
+ talloc_free(check_tmp);
+ talloc_free(reply_tmp);
+ ERROR("%s[%d]: Parse error (reply) for entry %s: %s",
+ file, lineno, entry, fr_strerror());
+ fclose(fp);
+ return -1;
+ }
+
+ create_entry:
+ /*
+ * Done with this entry...
+ */
+ MEM(t = talloc_zero(ctx, PAIR_LIST));
+
+ if (check_tmp) fr_pair_steal(t, check_tmp);
+ if (reply_tmp) fr_pair_steal(t, reply_tmp);
+
+ t->check = check_tmp;
+ t->reply = reply_tmp;
+ t->lineno = entry_lineno;
+ t->order = order++;
+ check_tmp = NULL;
+ reply_tmp = NULL;
+
+ t->name = talloc_typed_strdup(t, entry);
+
+ *last = t;
+ last = &(t->next);
+
+ /*
+ * Look for a name. If we came here because
+ * there were no reply attributes, then re-parse
+ * the current line, instead of reading another one.
+ */
+ mode = FIND_MODE_NAME;
+ if (feof(fp)) break;
+ if (!isspace((uint8_t) buffer[0])) goto parse_again;
+ }
+
+ /*
+ * We're at EOF. If we're supposed to read more, that's
+ * an error.
+ */
+ if (mode == FIND_MODE_HAVE_REPLY) goto trailing_comma;
+
+ /*
+ * We had an entry, but no reply attributes. That's OK.
+ */
+ if (mode == FIND_MODE_WANT_REPLY) goto create_entry;
+
+ /*
+ * Else we were looking for an entry. We didn't get one
+ * because we were at EOF, so that's OK.
+ */
+
+ fclose(fp);
+
+ *list = pl;
+ return 0;
+}
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