summaryrefslogtreecommitdiffhomepage
path: root/adns-0.6/client/adnslogres.c
diff options
context:
space:
mode:
authorSteven Young <sdyoung@users.sourceforge.net>2000-02-16 17:32:49 +0000
committerSteven Young <sdyoung@users.sourceforge.net>2000-02-16 17:32:49 +0000
commit37e63909c09359ddd5baf7a237387ee5f7219c2d (patch)
tree118da48d4b5ed947bc4cb9c004d7e10a976be57a /adns-0.6/client/adnslogres.c
parenta094587fb0e92c5638808d7bff91ef802e200112 (diff)
This commit was generated by cvs2svn to compensate for changes in r2,
which included commits to RCS files with non-trunk default branches.
Diffstat (limited to 'adns-0.6/client/adnslogres.c')
-rw-r--r--adns-0.6/client/adnslogres.c239
1 files changed, 239 insertions, 0 deletions
diff --git a/adns-0.6/client/adnslogres.c b/adns-0.6/client/adnslogres.c
new file mode 100644
index 0000000..c732823
--- /dev/null
+++ b/adns-0.6/client/adnslogres.c
@@ -0,0 +1,239 @@
+/*
+ * adnslogres.c
+ * - a replacement for the Apache logresolve program using adns
+ */
+/*
+ * This file is
+ * Copyright (C) 1999 Tony Finch <dot@dotat.at>
+ * Copyright (C) 1999 Ian Jackson <ian@davenant.greenend.org.uk>
+ *
+ * It is part of adns, which is
+ * Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
+ * Copyright (C) 1999 Tony Finch <dot@dotat.at>
+ *
+ * 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, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * This version was originally supplied by Tony Finch, but has been
+ * modified by Ian Jackson as it was incorporated into adns.
+ */
+
+static const char * const cvsid =
+ "$Id: adnslogres.c,v 1.1.1.1 2000-02-16 17:32:28 sdyoung Exp $";
+
+#include <sys/types.h>
+#include <sys/time.h>
+
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <errno.h>
+
+#include "adns.h"
+
+/* maximum number of concurrent DNS queries */
+#define MAXPENDING 1000
+
+/* maximum length of a line */
+#define MAXLINE 1024
+
+/* option flags */
+#define OPT_DEBUG 1
+#define OPT_POLL 2
+
+static const char *progname;
+
+#define msg(fmt, args...) fprintf(stderr, "%s: " fmt "\n", progname, ##args)
+
+static void aargh(const char *cause) {
+ const char *why = strerror(errno);
+ if (!why) why = "Unknown error";
+ msg("%s: %s (%d)", cause, why, errno);
+ exit(1);
+}
+
+/*
+ * Parse the IP address and convert to a reverse domain name.
+ */
+static char *ipaddr2domain(char *start, char **addr, char **rest) {
+ static char buf[30]; /* "123.123.123.123.in-addr.arpa.\0" */
+ char *ptrs[5];
+ int i;
+
+ ptrs[0]= start;
+retry:
+ while (!isdigit(*ptrs[0]))
+ if (!*ptrs[0]++) {
+ strcpy(buf, "invalid.");
+ *addr= *rest= NULL;
+ return buf;
+ }
+ for (i= 1; i < 5; i++) {
+ ptrs[i]= ptrs[i-1];
+ while (isdigit(*ptrs[i]++));
+ if ((i == 4 && !isspace(ptrs[i][-1])) ||
+ (i != 4 && ptrs[i][-1] != '.') ||
+ (ptrs[i]-ptrs[i-1] > 4)) {
+ ptrs[0]= ptrs[i]-1;
+ goto retry;
+ }
+ }
+ sprintf(buf, "%.*s.%.*s.%.*s.%.*s.in-addr.arpa.",
+ ptrs[4]-ptrs[3]-1, ptrs[3],
+ ptrs[3]-ptrs[2]-1, ptrs[2],
+ ptrs[2]-ptrs[1]-1, ptrs[1],
+ ptrs[1]-ptrs[0]-1, ptrs[0]);
+ *addr= ptrs[0];
+ *rest= ptrs[4]-1;
+ return buf;
+}
+
+static void printline(FILE *outf, char *start, char *addr, char *rest, char *domain) {
+ if (domain)
+ fprintf(outf, "%.*s%s%s", addr - start, start, domain, rest);
+ else
+ fputs(start, outf);
+ if (ferror(outf)) aargh("write output");
+}
+
+typedef struct logline {
+ struct logline *next;
+ char *start, *addr, *rest;
+ adns_query query;
+} logline;
+
+static logline *readline(FILE *inf, adns_state adns, int opts) {
+ static char buf[MAXLINE];
+ char *str;
+ logline *line;
+
+ if (fgets(buf, MAXLINE, inf)) {
+ str= malloc(sizeof(*line) + strlen(buf) + 1);
+ if (!str) aargh("malloc");
+ line= (logline*)str;
+ line->next= NULL;
+ line->start= str+sizeof(logline);
+ strcpy(line->start, buf);
+ str= ipaddr2domain(line->start, &line->addr, &line->rest);
+ if (opts & OPT_DEBUG)
+ msg("submitting %.*s -> %s", line->rest-line->addr, line->addr, str);
+ if (adns_submit(adns, str, adns_r_ptr,
+ adns_qf_quoteok_cname|adns_qf_cname_loose,
+ NULL, &line->query))
+ aargh("adns_submit");
+ return line;
+ }
+ if (!feof(inf))
+ aargh("fgets");
+ return NULL;
+}
+
+static void proclog(FILE *inf, FILE *outf, int opts) {
+ int eof, err, len;
+ adns_state adns;
+ adns_answer *answer;
+ logline *head, *tail, *line;
+
+ errno= adns_init(&adns, (opts & OPT_DEBUG) ? adns_if_debug : 0, 0);
+ if (errno) aargh("adns_init");
+ head= tail= readline(inf, adns, opts);
+ len= 1; eof= 0;
+ while (head) {
+ if (opts & OPT_DEBUG)
+ msg("%d in queue; checking %.*s", len,
+ head->rest-head->addr, head->addr);
+ if (eof || len > MAXPENDING)
+ if (opts & OPT_POLL)
+ err= adns_wait_poll(adns, &head->query, &answer, NULL);
+ else
+ err= adns_wait(adns, &head->query, &answer, NULL);
+ else
+ err= adns_check(adns, &head->query, &answer, NULL);
+ if (err != EAGAIN) {
+ printline(outf, head->start, head->addr, head->rest,
+ answer->status == adns_s_ok ? *answer->rrs.str : NULL);
+ line= head; head= head->next;
+ free(line); free(answer);
+ len--;
+ }
+ if (!eof) {
+ line= readline(inf, adns, opts);
+ if (!line)
+ eof= 1;
+ else {
+ if (!head)
+ head= line;
+ else
+ tail->next= line;
+ tail= line;
+ len++;
+ }
+ }
+ }
+ adns_finish(adns);
+}
+
+static void usage(void) {
+ fprintf(stderr, "usage: %s [-d] [-p] [logfile]\n", progname);
+ exit(1);
+}
+
+int main(int argc, char *argv[]) {
+ int c, opts;
+ FILE *inf;
+
+ progname= strrchr(*argv, '/');
+ if (progname)
+ progname++;
+ else
+ progname= *argv;
+ opts= 0;
+
+ while ((c= getopt(argc, argv, "dp")) != -1)
+ switch (c) {
+ case 'd':
+ opts|= OPT_DEBUG;
+ break;
+ case 'p':
+ opts|= OPT_POLL;
+ break;
+ default:
+ usage();
+ }
+
+ argc-= optind;
+ argv+= optind;
+
+ inf= NULL;
+ if (argc == 0)
+ inf= stdin;
+ else if (argc == 1)
+ inf= fopen(*argv, "r");
+ else
+ usage();
+
+ if (!inf)
+ aargh("couldn't open input");
+
+ proclog(inf, stdout, opts);
+
+ if (fclose(inf))
+ aargh("fclose input");
+ if (fclose(stdout))
+ aargh("fclose output");
+
+ return 0;
+}