diff options
Diffstat (limited to 'networking/udhcp')
| -rw-r--r-- | networking/udhcp/dhcpd.c | 4 | ||||
| -rw-r--r-- | networking/udhcp/files.c | 32 |
2 files changed, 19 insertions, 17 deletions
diff --git a/networking/udhcp/dhcpd.c b/networking/udhcp/dhcpd.c index d0a1eba..ebf3017 100644 --- a/networking/udhcp/dhcpd.c +++ b/networking/udhcp/dhcpd.c @@ -255,13 +255,13 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv) DEBUG("Received DECLINE"); if (lease) { memset(lease->chaddr, 0, 16); - lease->expires = time(0) + server_config.decline_time; + lease->expires = time(NULL) + server_config.decline_time; } break; case DHCPRELEASE: DEBUG("Received RELEASE"); if (lease) - lease->expires = time(0); + lease->expires = time(NULL); break; case DHCPINFORM: DEBUG("Received INFORM"); diff --git a/networking/udhcp/files.c b/networking/udhcp/files.c index 64edcbb..fb6fe01 100644 --- a/networking/udhcp/files.c +++ b/networking/udhcp/files.c @@ -36,6 +36,7 @@ static int read_ip(const char *line, void *arg) return 1; } + static int read_mac(const char *line, void *arg) { return NULL == ether_aton_r(line, (struct ether_addr *)arg); @@ -362,7 +363,7 @@ void FAST_FUNC write_leases(void) if (leases[i].yiaddr == 0) continue; - /* screw with the time in the struct, for easier writing */ + /* Screw with the time in the struct, for easier writing */ tmp_time = leases[i].expires; leases[i].expires -= curr; @@ -374,7 +375,7 @@ void FAST_FUNC write_leases(void) * we lose some leases on restart. Oh well. */ full_write(fd, &leases[i], sizeof(leases[i])); - /* then restore it when done */ + /* Then restore it when done */ leases[i].expires = tmp_time; } close(fd); @@ -390,10 +391,10 @@ void FAST_FUNC write_leases(void) void FAST_FUNC read_leases(const char *file) { - int fd; - unsigned i; struct dhcpOfferedAddr lease; - int64_t written_at, curr; + int64_t written_at, time_passed; + int fd; + USE_UDHCP_DEBUG(unsigned i;) fd = open_or_warn(file, O_RDONLY); if (fd < 0) @@ -402,18 +403,19 @@ void FAST_FUNC read_leases(const char *file) if (full_read(fd, &written_at, sizeof(written_at)) != sizeof(written_at)) goto ret; written_at = ntoh64(written_at); - curr = time(NULL); - if (curr < written_at) - written_at = curr; /* lease file from future! :) */ - - i = 0; - while (i < server_config.max_leases - && full_read(fd, &lease, sizeof(lease)) == sizeof(lease) - ) { + + time_passed = time(NULL) - written_at; + /* Strange written_at, or lease file from old version of udhcpd + * which had no "written_at" field? */ + if ((uint64_t)time_passed > 12 * 60 * 60) + goto ret; + + USE_UDHCP_DEBUG(i = 0;) + while (full_read(fd, &lease, sizeof(lease)) == sizeof(lease)) { /* ADDME: what if it matches some static lease? */ uint32_t y = ntohl(lease.yiaddr); if (y >= server_config.start_ip && y <= server_config.end_ip) { - int64_t expires = ntohl(lease.expires) + written_at - curr; + signed_leasetime_t expires = ntohl(lease.expires) - (signed_leasetime_t)time_passed; if (expires <= 0) continue; /* NB: add_lease takes "relative time", IOW, @@ -422,7 +424,7 @@ void FAST_FUNC read_leases(const char *file) bb_error_msg("too many leases while loading %s", file); break; } - i++; + USE_UDHCP_DEBUG(i++;) } } DEBUG("Read %d leases", i); |