--- /dev/null
+/******************************************************************************/
+/* postlicyd: a postfix policy daemon with a lot of features */
+/* ~~~~~~~~~ */
+/* ________________________________________________________________________ */
+/* */
+/* Redistribution and use in source and binary forms, with or without */
+/* modification, are permitted provided that the following conditions */
+/* are met: */
+/* */
+/* 1. Redistributions of source code must retain the above copyright */
+/* notice, this list of conditions and the following disclaimer. */
+/* 2. Redistributions in binary form must reproduce the above copyright */
+/* notice, this list of conditions and the following disclaimer in the */
+/* documentation and/or other materials provided with the distribution. */
+/* 3. The names of its contributors may not be used to endorse or promote */
+/* products derived from this software without specific prior written */
+/* permission. */
+/* */
+/* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND */
+/* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE */
+/* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
+/* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS */
+/* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR */
+/* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF */
+/* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS */
+/* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */
+/* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) */
+/* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF */
+/* THE POSSIBILITY OF SUCH DAMAGE. */
+/******************************************************************************/
+
+/*
+ * Copyright © 2007 Pierre Habouzit
+ */
+
+#include <arpa/inet.h>
+#include <fcntl.h>
+#include <netinet/in.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+
+#include "common.h"
+#include "rbl.h"
+#include "str.h"
+
+#define IPv4_BITS 5
+#define IPv4_PREFIX(ip) ((uint32_t)(ip) >> IPv4_BITS)
+#define IPv4_SUFFIX(ip) ((uint32_t)(ip) & ((1 << IPv4_BITS) - 1))
+#define NODE(db, i) ((db)->tree + (i))
+#ifndef DEBUG
+#define DEBUG(...)
+#endif
+
+enum {
+ BALANCED = 0,
+ LEFT_HEAVY = 1,
+ RIGHT_HEAVY = 2,
+};
+
+struct rbldb_t {
+ uint32_t len, size;
+ uint32_t *ips;
+};
+
+static int get_o(const char *s, const char **out)
+{
+ int res = 0;
+
+ if (*s < '0' || *s > '9')
+ return -1;
+
+ res = *s++ - '0';
+ if (*s < '0' || *s > '9')
+ goto ok;
+
+ res = res * 10 + *s++ - '0';
+ if (*s < '0' || *s > '9')
+ goto ok;
+
+ res = res * 10 + *s++ - '0';
+ if (!(*s < '0' || *s > '9') || res < 100)
+ return -1;
+
+ ok:
+ *out = s;
+ return res;
+}
+
+static int parse_ipv4(const char *s, const char **out, uint32_t *ip)
+{
+ int o;
+
+ o = get_o(s, &s);
+ if ((o & ~0xff) || *s++ != '.')
+ return -1;
+ *ip = o << 24;
+
+ o = get_o(s, &s);
+ if ((o & ~0xff) || *s++ != '.')
+ return -1;
+ *ip |= o << 16;
+
+ o = get_o(s, &s);
+ if ((o & ~0xff) || *s++ != '.')
+ return -1;
+ *ip |= o << 8;
+
+ o = get_o(s, &s);
+ if (o & ~0xff)
+ return -1;
+ *ip |= o;
+
+ *out = s;
+ return 0;
+}
+
+rbldb_t *rbldb_create(const char *file)
+{
+ rbldb_t *db;
+ const char *map, *p, *end;
+ struct stat st;
+ int fd;
+
+ fd = open(file, O_RDONLY, 0000);
+ if (fd < 0) {
+ UNIXERR("open");
+ return NULL;
+ }
+
+ if (fstat(fd, &st) < 0) {
+ UNIXERR("fstat");
+ close(fd);
+ return NULL;
+ }
+
+ p = map = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+ if (map == MAP_FAILED) {
+ UNIXERR("mmap");
+ close(fd);
+ return NULL;
+ }
+ close(fd);
+
+ end = map + st.st_size;
+ while (end > map && end[-1] != '\n') {
+ --end;
+ }
+ if (end != map + st.st_size) {
+ syslog(LOG_WARNING, "file %s miss a final \\n, ignoring last line",
+ file);
+ }
+
+ db = p_new(rbldb_t, 1);
+ while (p < end) {
+ uint32_t ip;
+
+ while (*p == ' ' || *p == '\t' || *p == '\r')
+ p++;
+
+ if (parse_ipv4(p, &p, &ip) < 0) {
+ p = (char *)memchr(p, '\n', end - p) + 1;
+ } else {
+ if (db->len >= db->size) {
+ db->size += 64 * 1024;
+ p_realloc(&db->ips, db->size);
+ }
+ db->ips[db->len++] = ip;
+ }
+ }
+ munmap((void*)map, st.st_size);
+
+ if (db->len) {
+# define QSORT_TYPE uint32_t
+# define QSORT_BASE db->ips
+# define QSORT_NELT db->len
+# define QSORT_LT(a,b) *a < *b
+# include "qsort.c"
+ }
+
+ syslog(LOG_INFO, "rbl %s loaded, %d IPs", file, db->len);
+ return db;
+}
+
+void rbldb_delete(rbldb_t **db)
+{
+ if (*db) {
+ p_delete(&(*db)->ips);
+ p_delete(&(*db));
+ }
+}
+
+uint32_t rbldb_stats(rbldb_t *rbl)
+{
+ return rbl->len;
+}
+
+bool rbldb_ipv4_lookup(rbldb_t *db, uint32_t ip)
+{
+ int l = 0, r = db->len;
+
+ while (l < r) {
+ int i = (r + 1) / 2;
+
+ if (db->ips[i] == ip)
+ return true;
+
+ if (ip < db->ips[i]) {
+ r = i;
+ } else {
+ l = i + 1;
+ }
+ }
+ return false;
+}
projects / apps / pfixtools.git / blobdiff