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* [PATCH] dnsmasq: Update to 2.75
@ 2015-08-01 19:56 fischerm42
  2015-08-02 20:39 ` Michael Tremer
  0 siblings, 1 reply; 2+ messages in thread
From: fischerm42 @ 2015-08-01 19:56 UTC (permalink / raw)
  To: development

[-- Attachment #1: Type: text/plain, Size: 23189 bytes --]

From: Matthias Fischer <fischerm42(a)t-online.de>

Signed-off-by: Matthias Fischer <fischerm42(a)t-online.de>
---
 lfs/dnsmasq                                        |   6 +-
 ...5-Add-support-to-read-ISC-DHCP-lease-file.patch | 349 ++++++++++++++++++++
 ...q-Add-support-to-read-ISC-DHCP-lease-file.patch | 365 ---------------------
 3 files changed, 352 insertions(+), 368 deletions(-)
 create mode 100644 src/patches/dnsmasq-2.75-Add-support-to-read-ISC-DHCP-lease-file.patch
 delete mode 100644 src/patches/dnsmasq-Add-support-to-read-ISC-DHCP-lease-file.patch

diff --git a/lfs/dnsmasq b/lfs/dnsmasq
index e4410cc..24cb92a 100644
--- a/lfs/dnsmasq
+++ b/lfs/dnsmasq
@@ -24,7 +24,7 @@
 
 include Config
 
-VER        = 2.73
+VER        = 2.75
 
 THISAPP    = dnsmasq-$(VER)
 DL_FILE    = $(THISAPP).tar.xz
@@ -43,7 +43,7 @@ objects = $(DL_FILE)
 
 $(DL_FILE) = $(DL_FROM)/$(DL_FILE)
 
-$(DL_FILE)_MD5 = b8bfe96d22945c8cf4466826ba9b21bd
+$(DL_FILE)_MD5 = 887236f1ddde6eb57cdb9d01916c9f72
 
 install : $(TARGET)
 
@@ -73,7 +73,7 @@ $(subst %,%_MD5,$(objects)) :
 $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
 	@$(PREBUILD)
 	@rm -rf $(DIR_APP) && cd $(DIR_SRC) && tar axf $(DIR_DL)/$(DL_FILE)
-	cd $(DIR_APP) && patch -Np1 -i $(DIR_SRC)/src/patches/dnsmasq-Add-support-to-read-ISC-DHCP-lease-file.patch
+	cd $(DIR_APP) && patch -Np0 -i $(DIR_SRC)/src/patches/dnsmasq-2.75-Add-support-to-read-ISC-DHCP-lease-file.patch
 	cd $(DIR_APP) && sed -i src/config.h \
 		-e 's|/\* #define HAVE_IDN \*/|#define HAVE_IDN|g' \
 		-e 's|/\* #define HAVE_DNSSEC \*/|#define HAVE_DNSSEC|g' \
diff --git a/src/patches/dnsmasq-2.75-Add-support-to-read-ISC-DHCP-lease-file.patch b/src/patches/dnsmasq-2.75-Add-support-to-read-ISC-DHCP-lease-file.patch
new file mode 100644
index 0000000..4810e5d
--- /dev/null
+++ b/src/patches/dnsmasq-2.75-Add-support-to-read-ISC-DHCP-lease-file.patch
@@ -0,0 +1,349 @@
+--- Makefile	Thu Jul 30 21:59:07 2015
++++ Makefile	Sat Aug 01 17:44:39 2015
+@@ -73,7 +73,7 @@
+        dnsmasq.o dhcp.o lease.o rfc2131.o netlink.o dbus.o bpf.o \
+        helper.o tftp.o log.o conntrack.o dhcp6.o rfc3315.o \
+        dhcp-common.o outpacket.o radv.o slaac.o auth.o ipset.o \
+-       domain.o dnssec.o blockdata.o tables.o loop.o inotify.o poll.o
++       domain.o dnssec.o blockdata.o tables.o loop.o inotify.o poll.o isc.o
+ 
+ hdrs = dnsmasq.h config.h dhcp-protocol.h dhcp6-protocol.h \
+        dns-protocol.h radv-protocol.h ip6addr.h
+--- src/cache.c	Thu Jul 30 21:59:07 2015
++++ src/cache.c	Sat Aug 01 18:20:04 2015
+@@ -17,7 +17,7 @@
+ #include "dnsmasq.h"
+ 
+ static struct crec *cache_head = NULL, *cache_tail = NULL, **hash_table = NULL;
+-#ifdef HAVE_DHCP
++#if (defined HAVE_DHCP) || (defined HAVE_ISC_READER)
+ static struct crec *dhcp_spare = NULL;
+ #endif
+ static struct crec *new_chain = NULL;
+@@ -222,6 +222,9 @@
+       crecp->flags &= ~F_BIGNAME;
+     }
+ 
++  if (crecp->flags & F_DHCP)
++    free(crecp->name.namep);
++
+ #ifdef HAVE_DNSSEC
+   cache_blockdata_free(crecp);
+ #endif
+@@ -1151,7 +1154,7 @@
+   
+ } 
+ 
+-#ifdef HAVE_DHCP
++#if (defined HAVE_DHCP) || (defined HAVE_ISC_READER)
+ struct in_addr a_record_from_hosts(char *name, time_t now)
+ {
+   struct crec *crecp = NULL;
+@@ -1294,7 +1297,11 @@
+       else
+ 	crec->ttd = ttd;
+       crec->addr.addr = *host_address;
++#ifdef HAVE_ISC_READER
++      crec->name.namep = strdup(host_name);
++#else
+       crec->name.namep = host_name;
++#endif
+       crec->uid = next_uid();
+       cache_hash(crec);
+ 
+--- src/dnsmasq.c	Thu Jul 30 21:59:07 2015
++++ src/dnsmasq.c	Sat Aug 01 17:51:19 2015
+@@ -980,8 +980,13 @@
+ 	  /* poll_resolv doesn't need to reload first time through, since 
+ 	     that's queued anyway. */
+ 
+-	  poll_resolv(0, daemon->last_resolv != 0, now); 	  
++	  poll_resolv(0, daemon->last_resolv != 0, now);
+ 	  daemon->last_resolv = now;
++
++#ifdef HAVE_ISC_READER
++	  if (daemon->lease_file && !daemon->dhcp)
++	    load_dhcp(now);
++#endif
+ 	}
+ #endif
+ 
+--- src/dnsmasq.h	Thu Jul 30 21:59:07 2015
++++ src/dnsmasq.h	Sat Aug 01 17:53:12 2015
+@@ -1513,6 +1513,11 @@
+ void set_dynamic_inotify(int flag, int total_size, struct crec **rhash, int revhashsz);
+ #endif
+ 
++/* isc.c */
++#ifdef HAVE_ISC_READER
++void load_dhcp(time_t now);
++#endif
++
+ /* poll.c */
+ void poll_reset(void);
+ int poll_check(int fd, short event);
+--- src/isc.c	Sat Aug 01 18:07:12 2015
++++ src/isc.c	Sat Aug 01 17:54:27 2015
+@@ -0,0 +1,251 @@
++/* dnsmasq is Copyright (c) 2014 John Volpe, Simon Kelley and
++     Michael Tremer
++
++  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; version 2 dated June, 1991, or
++  (at your option) version 3 dated 29 June, 2007.
++
++  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, see <http://www.gnu.org/licenses/>.
++
++  Code in this file is based on contributions by John Volpe and
++  Simon Kelley. Updated for recent versions of dnsmasq by
++  Michael Tremer.
++*/
++
++#include "dnsmasq.h"
++
++#ifdef HAVE_ISC_READER
++#define MAXTOK 50
++
++struct isc_dhcp_lease {
++	char* name;
++	char* fqdn;
++	time_t expires;
++	struct in_addr addr;
++	struct isc_dhcp_lease* next;
++};
++
++static struct isc_dhcp_lease* dhcp_lease_new(const char* hostname) {
++	struct isc_dhcp_lease* lease = whine_malloc(sizeof(*lease));
++
++	lease->name = strdup(hostname);
++	if (daemon->domain_suffix) {
++		asprintf(&lease->fqdn, "%s.%s", hostname, daemon->domain_suffix);
++	}
++	lease->expires = 0;
++	lease->next = NULL;
++
++	return lease;
++}
++
++static void dhcp_lease_free(struct isc_dhcp_lease* lease) {
++	if (!lease)
++		return;
++
++	if (lease->name)
++		free(lease->name);
++	if (lease->fqdn)
++		free(lease->fqdn);
++	free(lease);
++}
++
++static int next_token(char* token, int buffsize, FILE* fp) {
++	int c, count = 0;
++	char* cp = token;
++
++	while ((c = getc(fp)) != EOF) {
++		if (c == '#') {
++			do {
++				c = getc(fp);
++			} while (c != '\n' && c != EOF);
++		}
++
++		if (c == ' ' || c == '\t' || c == '\n' || c == ';') {
++			if (count)
++				break;
++		} else if ((c != '"') && (count < buffsize - 1)) {
++			*cp++ = c;
++			count++;
++		}
++	}
++
++	*cp = 0;
++	return count ? 1 : 0;
++}
++
++static long get_utc_offset() {
++	time_t t = time(NULL);
++	struct tm* time_struct = localtime(&t);
++
++	return time_struct->tm_gmtoff;
++}
++
++static time_t parse_lease_time(const char* token_date, const char* token_time) {
++	time_t time = (time_t)(-1);
++	struct tm lease_time;
++
++	if (sscanf(token_date, "%d/%d/%d", &lease_time.tm_year, &lease_time.tm_mon, &lease_time.tm_mday) == 3) {
++		lease_time.tm_year -= 1900;
++		lease_time.tm_mon -= 1;
++
++		if (sscanf(token_time, "%d:%d:%d", &lease_time.tm_hour, &lease_time.tm_min, &lease_time.tm_sec) == 3) {
++			time = mktime(&lease_time) + get_utc_offset();
++		}
++	}
++
++	return time;
++}
++
++static struct isc_dhcp_lease* find_lease(const char* hostname, struct isc_dhcp_lease* leases) {
++	struct isc_dhcp_lease* lease = leases;
++
++	while (lease) {
++		if (strcmp(hostname, lease->name) == 0) {
++			return lease;
++		}
++		lease = lease->next;
++	}
++
++	return NULL;
++}
++
++static off_t lease_file_size = (off_t)0;
++static ino_t lease_file_inode = (ino_t)0;
++
++void load_dhcp(time_t now) {
++	struct isc_dhcp_lease* leases = NULL;
++
++	struct stat statbuf;
++	if (stat(daemon->lease_file, &statbuf) == -1) {
++		return;
++	}
++
++	/* Do nothing if the lease file has not changed. */
++	if ((statbuf.st_size <= lease_file_size) && (statbuf.st_ino == lease_file_inode))
++		return;
++
++	lease_file_size = statbuf.st_size;
++	lease_file_inode = statbuf.st_ino;
++
++	FILE* fp = fopen(daemon->lease_file, "r");
++	if (!fp) {
++		my_syslog(LOG_ERR, _("failed to load %s:%s"), daemon->lease_file, strerror(errno));
++		return;
++	}
++
++	my_syslog(LOG_INFO, _("reading %s"), daemon->lease_file);
++
++	char* hostname = daemon->namebuff;
++	struct in_addr host_address;
++	time_t time_starts = -1;
++	time_t time_ends = -1;
++	int nomem;
++
++	char token[MAXTOK];
++	while ((next_token(token, MAXTOK, fp))) {
++		if (strcmp(token, "lease") == 0) {
++			hostname[0] = '\0';
++
++			if (next_token(token, MAXTOK, fp) && ((host_address.s_addr = inet_addr(token)) != (in_addr_t)-1)) {
++				if (next_token(token, MAXTOK, fp) && *token == '{') {
++					while (next_token(token, MAXTOK, fp) && *token != '}') {
++						if ((strcmp(token, "client-hostname") == 0) || (strcmp(token, "hostname") == 0)) {
++							if (next_token(hostname, MAXDNAME, fp)) {
++								if (!canonicalise(hostname, &nomem)) {
++									*hostname = 0;
++									my_syslog(LOG_ERR, _("bad name in %s"), daemon->lease_file);
++								}
++							}
++						} else if ((strcmp(token, "starts") == 0) || (strcmp(token, "ends") == 0)) {
++							char token_date[MAXTOK];
++							char token_time[MAXTOK];
++
++							int is_starts = strcmp(token, "starts") == 0;
++
++							// Throw away the weekday and parse the date.
++							if (next_token(token, MAXTOK, fp) && next_token(token_date, MAXTOK, fp) && next_token(token_time, MAXTOK, fp)) {
++								time_t time = parse_lease_time(token_date, token_time);
++
++								if (is_starts)
++									time_starts = time;
++								else
++									time_ends = time;
++							}
++						}
++					}
++
++					if (!*hostname)
++						continue;
++
++					if ((time_starts == -1) || (time_ends == -1))
++						continue;
++
++					if (difftime(now, time_ends) > 0)
++						continue;
++
++					char* dot = strchr(hostname, '.');
++					if (dot) {
++						if (!daemon->domain_suffix || hostname_isequal(dot + 1, daemon->domain_suffix)) {
++							my_syslog(LOG_WARNING,
++								_("Ignoring DHCP lease for %s because it has an illegal domain part"),
++								hostname);
++							continue;
++						}
++						*dot = 0;
++					}
++
++					// Search for an existing lease in the list
++					// with the given host name and update the data
++					// if needed.
++					struct isc_dhcp_lease* lease = find_lease(hostname, leases);
++
++					// If no lease already exists, we create a new one
++					// and append it to the list.
++					if (!lease) {
++						lease = dhcp_lease_new(hostname);
++
++						lease->next = leases;
++						leases = lease;
++					}
++
++					// Only update more recent leases.
++					if (lease->expires > time_ends)
++						continue;
++
++					lease->addr = host_address;
++					lease->expires = time_ends;
++				}
++			}
++		}
++	}
++
++	fclose(fp);
++
++	// Drop all entries.
++	cache_unhash_dhcp();
++
++	while (leases) {
++		struct isc_dhcp_lease *lease = leases;
++		leases = lease->next;
++
++		if (lease->fqdn) {
++			cache_add_dhcp_entry(lease->fqdn, AF_INET, (struct all_addr*)&lease->addr.s_addr, lease->expires);
++		}
++
++		if (lease->name) {
++			cache_add_dhcp_entry(lease->name, AF_INET, (struct all_addr*)&lease->addr.s_addr, lease->expires);
++		}
++
++		// Cleanup
++		dhcp_lease_free(lease);
++	}
++}
++
++#endif
+--- src/option.c	Thu Jul 30 21:59:07 2015
++++ src/option.c	Sat Aug 01 17:55:30 2015
+@@ -1699,7 +1699,7 @@
+ 	ret_err(_("bad MX target"));
+       break;
+ 
+-#ifdef HAVE_DHCP      
++#if (defined HAVE_DHCP) || (defined HAVE_ISC_READER)
+     case 'l':  /* --dhcp-leasefile */
+       daemon->lease_file = opt_string_alloc(arg);
+       break;
diff --git a/src/patches/dnsmasq-Add-support-to-read-ISC-DHCP-lease-file.patch b/src/patches/dnsmasq-Add-support-to-read-ISC-DHCP-lease-file.patch
deleted file mode 100644
index 1a89b36..0000000
--- a/src/patches/dnsmasq-Add-support-to-read-ISC-DHCP-lease-file.patch
+++ /dev/null
@@ -1,365 +0,0 @@
-diff --git a/Makefile b/Makefile
-index 2910320b6452..0a76ce3c5154 100644
---- a/Makefile
-+++ b/Makefile
-@@ -73,7 +73,7 @@ objs = cache.o rfc1035.o util.o option.o forward.o network.o \
-        dnsmasq.o dhcp.o lease.o rfc2131.o netlink.o dbus.o bpf.o \
-        helper.o tftp.o log.o conntrack.o dhcp6.o rfc3315.o \
-        dhcp-common.o outpacket.o radv.o slaac.o auth.o ipset.o \
--       domain.o dnssec.o blockdata.o tables.o loop.o inotify.o
-+       domain.o dnssec.o blockdata.o tables.o loop.o inotify.o isc.o
- 
- hdrs = dnsmasq.h config.h dhcp-protocol.h dhcp6-protocol.h \
-        dns-protocol.h radv-protocol.h ip6addr.h
-diff --git a/src/cache.c b/src/cache.c
-index 117ae279fd4e..6ee7ee362e6c 100644
---- a/src/cache.c
-+++ b/src/cache.c
-@@ -17,7 +17,7 @@
- #include "dnsmasq.h"
- 
- static struct crec *cache_head = NULL, *cache_tail = NULL, **hash_table = NULL;
--#ifdef HAVE_DHCP
-+#if (defined HAVE_DHCP) || (defined HAVE_ISC_READER)
- static struct crec *dhcp_spare = NULL;
- #endif
- static struct crec *new_chain = NULL;
-@@ -222,6 +222,9 @@ static void cache_free(struct crec *crecp)
-       crecp->flags &= ~F_BIGNAME;
-     }
- 
-+  if (crecp->flags & F_DHCP)
-+    free(crecp->name.namep);
-+
- #ifdef HAVE_DNSSEC
-   cache_blockdata_free(crecp);
- #endif
-@@ -1151,7 +1154,7 @@ void cache_reload(void)
-   
- } 
- 
--#ifdef HAVE_DHCP
-+#if (defined HAVE_DHCP) || (defined HAVE_ISC_READER)
- struct in_addr a_record_from_hosts(char *name, time_t now)
- {
-   struct crec *crecp = NULL;
-@@ -1229,7 +1232,7 @@ void cache_add_dhcp_entry(char *host_name, int prot,
-       addrlen = sizeof(struct in6_addr);
-     }
- #endif
--  
-+
-   inet_ntop(prot, host_address, daemon->addrbuff, ADDRSTRLEN);
-   
-   while ((crec = cache_find_by_name(crec, host_name, 0, flags | F_CNAME)))
-@@ -1294,7 +1297,11 @@ void cache_add_dhcp_entry(char *host_name, int prot,
-       else
- 	crec->ttd = ttd;
-       crec->addr.addr = *host_address;
-+#ifdef HAVE_ISC_READER
-+      crec->name.namep = strdup(host_name);
-+#else
-       crec->name.namep = host_name;
-+#endif
-       crec->uid = next_uid();
-       cache_hash(crec);
- 
-diff --git a/src/dnsmasq.c b/src/dnsmasq.c
-index e903a24c8105..eefc7f939933 100644
---- a/src/dnsmasq.c
-+++ b/src/dnsmasq.c
-@@ -970,6 +970,11 @@ int main (int argc, char **argv)
- 
- 	  poll_resolv(0, daemon->last_resolv != 0, now); 	  
- 	  daemon->last_resolv = now;
-+
-+#ifdef HAVE_ISC_READER
-+	  if (daemon->lease_file && !daemon->dhcp)
-+	    load_dhcp(now);
-+#endif
- 	}
- #endif
- 
-diff --git a/src/dnsmasq.h b/src/dnsmasq.h
-index 89e758b56a0a..c5edd6fdf7f5 100644
---- a/src/dnsmasq.h
-+++ b/src/dnsmasq.h
-@@ -1502,3 +1502,8 @@ void inotify_dnsmasq_init();
- int inotify_check(time_t now);
- void set_dynamic_inotify(int flag, int total_size, struct crec **rhash, int revhashsz);
- #endif
-+
-+/* isc.c */
-+#ifdef HAVE_ISC_READER
-+void load_dhcp(time_t now);
-+#endif
-diff --git a/src/isc.c b/src/isc.c
-new file mode 100644
-index 000000000000..51064426f17f
---- /dev/null
-+++ b/src/isc.c
-@@ -0,0 +1,251 @@
-+/* dnsmasq is Copyright (c) 2014 John Volpe, Simon Kelley and
-+     Michael Tremer
-+
-+  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; version 2 dated June, 1991, or
-+  (at your option) version 3 dated 29 June, 2007.
-+
-+  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, see <http://www.gnu.org/licenses/>.
-+
-+  Code in this file is based on contributions by John Volpe and
-+  Simon Kelley. Updated for recent versions of dnsmasq by
-+  Michael Tremer.
-+*/
-+
-+#include "dnsmasq.h"
-+
-+#ifdef HAVE_ISC_READER
-+#define MAXTOK 50
-+
-+struct isc_dhcp_lease {
-+	char* name;
-+	char* fqdn;
-+	time_t expires;
-+	struct in_addr addr;
-+	struct isc_dhcp_lease* next;
-+};
-+
-+static struct isc_dhcp_lease* dhcp_lease_new(const char* hostname) {
-+	struct isc_dhcp_lease* lease = whine_malloc(sizeof(*lease));
-+
-+	lease->name = strdup(hostname);
-+	if (daemon->domain_suffix) {
-+		asprintf(&lease->fqdn, "%s.%s", hostname, daemon->domain_suffix);
-+	}
-+	lease->expires = 0;
-+	lease->next = NULL;
-+
-+	return lease;
-+}
-+
-+static void dhcp_lease_free(struct isc_dhcp_lease* lease) {
-+	if (!lease)
-+		return;
-+
-+	if (lease->name)
-+		free(lease->name);
-+	if (lease->fqdn)
-+		free(lease->fqdn);
-+	free(lease);
-+}
-+
-+static int next_token(char* token, int buffsize, FILE* fp) {
-+	int c, count = 0;
-+	char* cp = token;
-+
-+	while ((c = getc(fp)) != EOF) {
-+		if (c == '#') {
-+			do {
-+				c = getc(fp);
-+			} while (c != '\n' && c != EOF);
-+		}
-+
-+		if (c == ' ' || c == '\t' || c == '\n' || c == ';') {
-+			if (count)
-+				break;
-+		} else if ((c != '"') && (count < buffsize - 1)) {
-+			*cp++ = c;
-+			count++;
-+		}
-+	}
-+
-+	*cp = 0;
-+	return count ? 1 : 0;
-+}
-+
-+static long get_utc_offset() {
-+	time_t t = time(NULL);
-+	struct tm* time_struct = localtime(&t);
-+
-+	return time_struct->tm_gmtoff;
-+}
-+
-+static time_t parse_lease_time(const char* token_date, const char* token_time) {
-+	time_t time = (time_t)(-1);
-+	struct tm lease_time;
-+
-+	if (sscanf(token_date, "%d/%d/%d", &lease_time.tm_year, &lease_time.tm_mon, &lease_time.tm_mday) == 3) {
-+		lease_time.tm_year -= 1900;
-+		lease_time.tm_mon -= 1;
-+
-+		if (sscanf(token_time, "%d:%d:%d", &lease_time.tm_hour, &lease_time.tm_min, &lease_time.tm_sec) == 3) {
-+			time = mktime(&lease_time) + get_utc_offset();
-+		}
-+	}
-+
-+	return time;
-+}
-+
-+static struct isc_dhcp_lease* find_lease(const char* hostname, struct isc_dhcp_lease* leases) {
-+	struct isc_dhcp_lease* lease = leases;
-+
-+	while (lease) {
-+		if (strcmp(hostname, lease->name) == 0) {
-+			return lease;
-+		}
-+		lease = lease->next;
-+	}
-+
-+	return NULL;
-+}
-+
-+static off_t lease_file_size = (off_t)0;
-+static ino_t lease_file_inode = (ino_t)0;
-+
-+void load_dhcp(time_t now) {
-+	struct isc_dhcp_lease* leases = NULL;
-+
-+	struct stat statbuf;
-+	if (stat(daemon->lease_file, &statbuf) == -1) {
-+		return;
-+	}
-+
-+	/* Do nothing if the lease file has not changed. */
-+	if ((statbuf.st_size <= lease_file_size) && (statbuf.st_ino == lease_file_inode))
-+		return;
-+
-+	lease_file_size = statbuf.st_size;
-+	lease_file_inode = statbuf.st_ino;
-+
-+	FILE* fp = fopen(daemon->lease_file, "r");
-+	if (!fp) {
-+		my_syslog(LOG_ERR, _("failed to load %s:%s"), daemon->lease_file, strerror(errno));
-+		return;
-+	}
-+
-+	my_syslog(LOG_INFO, _("reading %s"), daemon->lease_file);
-+
-+	char* hostname = daemon->namebuff;
-+	struct in_addr host_address;
-+	time_t time_starts = -1;
-+	time_t time_ends = -1;
-+	int nomem;
-+
-+	char token[MAXTOK];
-+	while ((next_token(token, MAXTOK, fp))) {
-+		if (strcmp(token, "lease") == 0) {
-+			hostname[0] = '\0';
-+
-+			if (next_token(token, MAXTOK, fp) && ((host_address.s_addr = inet_addr(token)) != (in_addr_t)-1)) {
-+				if (next_token(token, MAXTOK, fp) && *token == '{') {
-+					while (next_token(token, MAXTOK, fp) && *token != '}') {
-+						if ((strcmp(token, "client-hostname") == 0) || (strcmp(token, "hostname") == 0)) {
-+							if (next_token(hostname, MAXDNAME, fp)) {
-+								if (!canonicalise(hostname, &nomem)) {
-+									*hostname = 0;
-+									my_syslog(LOG_ERR, _("bad name in %s"), daemon->lease_file);
-+								}
-+							}
-+						} else if ((strcmp(token, "starts") == 0) || (strcmp(token, "ends") == 0)) {
-+							char token_date[MAXTOK];
-+							char token_time[MAXTOK];
-+
-+							int is_starts = strcmp(token, "starts") == 0;
-+
-+							// Throw away the weekday and parse the date.
-+							if (next_token(token, MAXTOK, fp) && next_token(token_date, MAXTOK, fp) && next_token(token_time, MAXTOK, fp)) {
-+								time_t time = parse_lease_time(token_date, token_time);
-+
-+								if (is_starts)
-+									time_starts = time;
-+								else
-+									time_ends = time;
-+							}
-+						}
-+					}
-+
-+					if (!*hostname)
-+						continue;
-+
-+					if ((time_starts == -1) || (time_ends == -1))
-+						continue;
-+
-+					if (difftime(now, time_ends) > 0)
-+						continue;
-+
-+					char* dot = strchr(hostname, '.');
-+					if (dot) {
-+						if (!daemon->domain_suffix || hostname_isequal(dot + 1, daemon->domain_suffix)) {
-+							my_syslog(LOG_WARNING,
-+								_("Ignoring DHCP lease for %s because it has an illegal domain part"),
-+								hostname);
-+							continue;
-+						}
-+						*dot = 0;
-+					}
-+
-+					// Search for an existing lease in the list
-+					// with the given host name and update the data
-+					// if needed.
-+					struct isc_dhcp_lease* lease = find_lease(hostname, leases);
-+
-+					// If no lease already exists, we create a new one
-+					// and append it to the list.
-+					if (!lease) {
-+						lease = dhcp_lease_new(hostname);
-+
-+						lease->next = leases;
-+						leases = lease;
-+					}
-+
-+					// Only update more recent leases.
-+					if (lease->expires > time_ends)
-+						continue;
-+
-+					lease->addr = host_address;
-+					lease->expires = time_ends;
-+				}
-+			}
-+		}
-+	}
-+
-+	fclose(fp);
-+
-+	// Drop all entries.
-+	cache_unhash_dhcp();
-+
-+	while (leases) {
-+		struct isc_dhcp_lease *lease = leases;
-+		leases = lease->next;
-+
-+		if (lease->fqdn) {
-+			cache_add_dhcp_entry(lease->fqdn, AF_INET, (struct all_addr*)&lease->addr.s_addr, lease->expires);
-+		}
-+
-+		if (lease->name) {
-+			cache_add_dhcp_entry(lease->name, AF_INET, (struct all_addr*)&lease->addr.s_addr, lease->expires);
-+		}
-+
-+		// Cleanup
-+		dhcp_lease_free(lease);
-+	}
-+}
-+
-+#endif
-diff --git a/src/option.c b/src/option.c
-index cb4e76ba0aa2..f6420fcbb7ab 100644
---- a/src/option.c
-+++ b/src/option.c
-@@ -1693,7 +1693,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
- 	ret_err(_("bad MX target"));
-       break;
- 
--#ifdef HAVE_DHCP      
-+#if (defined HAVE_DHCP) || (defined HAVE_ISC_READER)
-     case 'l':  /* --dhcp-leasefile */
-       daemon->lease_file = opt_string_alloc(arg);
-       break;
-- 
2.5.0


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2015-08-02 20:39 ` Michael Tremer

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