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Differential D12825 Diff 35142 head/sbin/dhclient/dhclient.c

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head/sbin/dhclient/dhclient.c

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#define whitechar(c) ((c) == ' ' || (c) == '\t') #define whitechar(c) ((c) == ' ' || (c) == '\t')
#define borderchar(c) (alphachar(c) || digitchar(c)) #define borderchar(c) (alphachar(c) || digitchar(c))
#define middlechar(c) (borderchar(c) || hyphenchar(c)) #define middlechar(c) (borderchar(c) || hyphenchar(c))
#define domainchar(c) ((c) > 0x20 && (c) < 0x7f) #define domainchar(c) ((c) > 0x20 && (c) < 0x7f)
#define CLIENT_PATH "PATH=/usr/bin:/usr/sbin:/bin:/sbin" #define CLIENT_PATH "PATH=/usr/bin:/usr/sbin:/bin:/sbin"
cap_channel_t *capsyslog;
time_t cur_time; time_t cur_time;
time_t default_lease_time = 43200; /* 12 hours... */ time_t default_lease_time = 43200; /* 12 hours... */
char *path_dhclient_conf = _PATH_DHCLIENT_CONF; char *path_dhclient_conf = _PATH_DHCLIENT_CONF;
char *path_dhclient_db = NULL; char *path_dhclient_db = NULL;
int log_perror = 1; int log_perror = 1;
int privfd; int privfd;
▲ Show 20 Lines • Show All 245 Lines • ▼ Show 20 Linesdie:
if (ifi->client->alias) if (ifi->client->alias)
script_write_params("alias_", ifi->client->alias); script_write_params("alias_", ifi->client->alias);
script_go(); script_go();
if (pidfile != NULL) if (pidfile != NULL)
pidfile_remove(pidfile); pidfile_remove(pidfile);
exit(1); exit(1);
} }
static void
init_casper(void)
{
cap_channel_t *casper;
casper = cap_init();
if (casper == NULL)
error("unable to start casper");
capsyslog = cap_service_open(casper, "system.syslog");
cap_close(casper);
if (capsyslog == NULL)
error("unable to open system.syslog service");
}
int int
main(int argc, char *argv[]) main(int argc, char *argv[])
{ {
extern char *__progname; extern char *__progname;
int ch, fd, quiet = 0, i = 0; int ch, fd, quiet = 0, i = 0;
int pipe_fd[2]; int pipe_fd[2];
int immediate_daemon = 0; int immediate_daemon = 0;
struct passwd *pw; struct passwd *pw;
pid_t otherpid; pid_t otherpid;
cap_rights_t rights; cap_rights_t rights;
init_casper();
/* Initially, log errors to stderr as well as to syslogd. */ /* Initially, log errors to stderr as well as to syslogd. */
openlog(__progname, LOG_PID | LOG_NDELAY, DHCPD_LOG_FACILITY); cap_openlog(capsyslog, __progname, LOG_PID | LOG_NDELAY, DHCPD_LOG_FACILITY);
setlogmask(LOG_UPTO(LOG_DEBUG)); cap_setlogmask(capsyslog, LOG_UPTO(LOG_DEBUG));
while ((ch = getopt(argc, argv, "bc:dl:p:qu")) != -1) while ((ch = getopt(argc, argv, "bc:dl:p:qu")) != -1)
switch (ch) { switch (ch) {
case 'b': case 'b':
immediate_daemon = 1; immediate_daemon = 1;
break; break;
case 'c': case 'c':
path_dhclient_conf = optarg; path_dhclient_conf = optarg;
▲ Show 20 Lines • Show All 143 Lines • ▼ Show 20 Lines if (setgroups(1, &pw->pw_gid) ||
setegid(pw->pw_gid) || setgid(pw->pw_gid) || setegid(pw->pw_gid) || setgid(pw->pw_gid) ||
seteuid(pw->pw_uid) || setuid(pw->pw_uid)) seteuid(pw->pw_uid) || setuid(pw->pw_uid))
error("can't drop privileges: %m"); error("can't drop privileges: %m");
endpwent(); endpwent();
setproctitle("%s", ifi->name); setproctitle("%s", ifi->name);
if (cap_enter() < 0 && errno != ENOSYS) if (CASPER_SUPPORT && cap_enter() < 0 && errno != ENOSYS)
error("can't enter capability mode: %m"); error("can't enter capability mode: %m");
if (immediate_daemon) if (immediate_daemon)
go_daemon(); go_daemon();
ifi->client->state = S_INIT; ifi->client->state = S_INIT;
state_reboot(ifi); state_reboot(ifi);
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