/* vi: set sw=4 ts=4: */
/*
- * files.c -- DHCP server file manipulation *
+ * DHCP server config and lease file manipulation
+ *
* Rewrite by Russ Dill <Russ.Dill@asu.edu> July 2001
*
- * Licensed under GPLv2, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2, see file LICENSE in this source tree.
*/
-
#include <netinet/ether.h>
#include "common.h"
#include "dhcpd.h"
-#if BB_LITTLE_ENDIAN
-static inline uint64_t hton64(uint64_t v)
-{
- return (((uint64_t)htonl(v)) << 32) | htonl(v >> 32);
-}
-#else
-#define hton64(v) (v)
-#endif
-#define ntoh64(v) hton64(v)
-
/* on these functions, make sure your datatype matches */
static int FAST_FUNC read_str(const char *line, void *arg)
{
};
static const struct config_keyword keywords[] = {
- /* keyword handler variable address default */
- {"start", udhcp_str2nip, &(server_config.start_ip), "192.168.0.20"},
- {"end", udhcp_str2nip, &(server_config.end_ip), "192.168.0.254"},
- {"interface", read_str, &(server_config.interface), "eth0"},
+ /* keyword handler variable address default */
+ {"start" , udhcp_str2nip , &server_config.start_ip , "192.168.0.20"},
+ {"end" , udhcp_str2nip , &server_config.end_ip , "192.168.0.254"},
+ {"interface" , read_str , &server_config.interface , "eth0"},
/* Avoid "max_leases value not sane" warning by setting default
* to default_end_ip - default_start_ip + 1: */
- {"max_leases", read_u32, &(server_config.max_leases), "235"},
- {"auto_time", read_u32, &(server_config.auto_time), "7200"},
- {"decline_time", read_u32, &(server_config.decline_time), "3600"},
- {"conflict_time",read_u32, &(server_config.conflict_time),"3600"},
- {"offer_time", read_u32, &(server_config.offer_time), "60"},
- {"min_lease", read_u32, &(server_config.min_lease_sec),"60"},
- {"lease_file", read_str, &(server_config.lease_file), LEASES_FILE},
- {"pidfile", read_str, &(server_config.pidfile), "/var/run/udhcpd.pid"},
- {"siaddr", udhcp_str2nip, &(server_config.siaddr_nip), "0.0.0.0"},
+ {"max_leases" , read_u32 , &server_config.max_leases , "235"},
+ {"auto_time" , read_u32 , &server_config.auto_time , "7200"},
+ {"decline_time" , read_u32 , &server_config.decline_time , "3600"},
+ {"conflict_time", read_u32 , &server_config.conflict_time, "3600"},
+ {"offer_time" , read_u32 , &server_config.offer_time , "60"},
+ {"min_lease" , read_u32 , &server_config.min_lease_sec, "60"},
+ {"lease_file" , read_str , &server_config.lease_file , LEASES_FILE},
+ {"pidfile" , read_str , &server_config.pidfile , "/var/run/udhcpd.pid"},
+ {"siaddr" , udhcp_str2nip , &server_config.siaddr_nip , "0.0.0.0"},
/* keywords with no defaults must be last! */
- {"option", udhcp_str2optset, &(server_config.options), ""},
- {"opt", udhcp_str2optset, &(server_config.options), ""},
- {"notify_file", read_str, &(server_config.notify_file), ""},
- {"sname", read_str, &(server_config.sname), ""},
- {"boot_file", read_str, &(server_config.boot_file), ""},
- {"static_lease", read_staticlease, &(server_config.static_leases), ""},
+ {"option" , udhcp_str2optset, &server_config.options , ""},
+ {"opt" , udhcp_str2optset, &server_config.options , ""},
+ {"notify_file" , read_str , &server_config.notify_file , NULL},
+ {"sname" , read_str , &server_config.sname , NULL},
+ {"boot_file" , read_str , &server_config.boot_file , NULL},
+ {"static_lease" , read_staticlease, &server_config.static_leases, ""},
};
enum { KWS_WITH_DEFAULTS = ARRAY_SIZE(keywords) - 6 };
curr = written_at = time(NULL);
- written_at = hton64(written_at);
+ written_at = SWAP_BE64(written_at);
full_write(fd, &written_at, sizeof(written_at));
for (i = 0; i < server_config.max_leases; i++) {
close(fd);
if (server_config.notify_file) {
-// TODO: vfork-based child creation
- char *cmd = xasprintf("%s %s", server_config.notify_file, server_config.lease_file);
- system(cmd);
- free(cmd);
+ char *argv[3];
+ argv[0] = server_config.notify_file;
+ argv[1] = server_config.lease_file;
+ argv[2] = NULL;
+ spawn_and_wait(argv);
}
}
if (full_read(fd, &written_at, sizeof(written_at)) != sizeof(written_at))
goto ret;
- written_at = ntoh64(written_at);
+ written_at = SWAP_BE64(written_at);
time_passed = time(NULL) - written_at;
/* Strange written_at, or lease file from old version of udhcpd