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dhclient: simplify lease expiration checking

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Use GDateTime instead of open-coding it.
This commit is contained in:
Dan Williams 2013-10-31 16:55:08 -05:00
parent e2fa51cd67
commit f7645f4ab4
1 changed files with 43 additions and 40 deletions
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83
src/dhcp-manager/nm-dhcp-dhclient.c
View file

@ -32,6 +32,7 @@
#include <stdio.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <ctype.h>
#include <config.h>
@ -175,6 +176,46 @@ add_lease_option (GHashTable *hash, char *line)
g_hash_table_insert (hash, g_strdup (line), g_strdup (spc));
}
static gboolean
lease_valid (const char *str_expire)
{
GDateTime *expire = NULL, *now = NULL;
struct tm expire_tm;
gboolean valid = FALSE;
g_return_val_if_fail (str_expire != NULL, FALSE);
/* Skip initial number (day of week?) */
if (!isdigit (*str_expire++))
return -1;
if (!isspace (*str_expire++))
return -1;
/* Read lease expiration (in UTC) */
if (!strptime (str_expire, "%t%Y/%m/%d %H:%M:%S", &expire_tm)) {
nm_log_warn (LOGD_DHCP, "couldn't parse DHCP lease file expire time '%s'",
str_expire);
return -1;
}
expire = g_date_time_new_utc (expire_tm.tm_year + 1900,
expire_tm.tm_mon + 1,
expire_tm.tm_mday,
expire_tm.tm_hour,
expire_tm.tm_min,
expire_tm.tm_sec);
if (expire) {
now = g_date_time_new_now_utc ();
valid = (g_date_time_difference (expire, now) > 0);
g_date_time_unref (expire);
g_date_time_unref (now);
} else {
nm_log_warn (LOGD_DHCP, "couldn't convert DHCP lease file expire time '%s'",
str_expire);
}
return valid;
}
GSList *
nm_dhcp_dhclient_get_lease_ip_configs (const char *iface,
const char *uuid,
@ -242,7 +283,6 @@ nm_dhcp_dhclient_get_lease_ip_configs (const char *iface,
const char *data;
guint32 tmp;
guint32 plen;
struct tm expire;
hash = iter->data;
@ -252,45 +292,8 @@ nm_dhcp_dhclient_get_lease_ip_configs (const char *iface,
continue;
data = g_hash_table_lookup (hash, "expire");
if (data) {
time_t now_tt;
struct tm *now;
/* Read lease expiration (in UTC) */
if (!strptime (data, "%w %Y/%m/%d %H:%M:%S", &expire)) {
nm_log_warn (LOGD_DHCP, "couldn't parse DHCP lease file expire time '%s'",
data);
continue;
}
now_tt = time (NULL);
now = gmtime(&now_tt);
/* Ignore this lease if it's already expired */
if (expire.tm_year < now->tm_year)
continue;
else if (expire.tm_year == now->tm_year) {
if (expire.tm_mon < now->tm_mon)
continue;
else if (expire.tm_mon == now->tm_mon) {
if (expire.tm_mday < now->tm_mday)
continue;
else if (expire.tm_mday == now->tm_mday) {
if (expire.tm_hour < now->tm_hour)
continue;
else if (expire.tm_hour == now->tm_hour) {
if (expire.tm_min < now->tm_min)
continue;
else if (expire.tm_min == now->tm_min) {
if (expire.tm_sec <= now->tm_sec)
continue;
}
}
}
}
}
/* If we get this far, the lease hasn't expired */
}
if (data && !lease_valid (data))
continue;
data = g_hash_table_lookup (hash, "fixed-address");
if (!data)