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-rw-r--r--toys/pending/syslogd.c160
1 files changed, 59 insertions, 101 deletions
diff --git a/toys/pending/syslogd.c b/toys/pending/syslogd.c
index aeaebb87..31389191 100644
--- a/toys/pending/syslogd.c
+++ b/toys/pending/syslogd.c
@@ -49,7 +49,6 @@ struct unsocks {
struct logfile {
struct logfile *next;
char *filename;
- int isNetwork;
uint32_t facility[8];
uint8_t level[LOG_NFACILITIES];
int logfd;
@@ -69,8 +68,6 @@ GLOBALS(
struct unsocks *lsocks; // list of listen sockets
struct logfile *lfiles; // list of write logfiles
- fd_set rfds; // fds for reading
- int sd; // socket for logging remote messeges.
int sigfd[2];
)
@@ -94,53 +91,6 @@ static char *dec(int val, CODE *clist)
return itoa(val);
}
-// Adds opened socks to rfds for select()
-static int addrfds(void)
-{
- struct unsocks *sock = TT.lsocks;
- int ret = 0;
- FD_ZERO(&TT.rfds);
-
- for (; sock; sock = sock->next) {
- if (sock->sd > 2) {
- FD_SET(sock->sd, &TT.rfds);
- ret = sock->sd;
- }
- }
- FD_SET(TT.sigfd[0], &TT.rfds);
- return (TT.sigfd[0] > ret) ? TT.sigfd[0] : ret;
-}
-
-/*
- * initializes unsock_t structure
- * and opens socket for reading
- * and adds to global lsock list.
- */
-static int open_unix_socks(void)
-{
- struct unsocks *sock;
- int ret = 0;
-
- for(sock = TT.lsocks; sock; sock = sock->next) {
- sock->sdu.sun_family = AF_UNIX;
- strcpy(sock->sdu.sun_path, sock->path);
- sock->sd = socket(AF_UNIX, SOCK_DGRAM, 0);
- if (sock->sd < 0) {
- perror_msg("OPEN SOCKS : failed");
- continue;
- }
- unlink(sock->sdu.sun_path);
- if (bind(sock->sd, (struct sockaddr *) &sock->sdu, sizeof(sock->sdu))) {
- perror_msg("BIND SOCKS : failed sock : %s", sock->sdu.sun_path);
- close(sock->sd);
- continue;
- }
- chmod(sock->path, 0777);
- ret++;
- }
- return ret;
-}
-
/*
* recurses the logfile list and resolves config
* for evry file and updates facilty and log level bits.
@@ -182,17 +132,17 @@ static int resolve_config(struct logfile *file, char *config)
lvl++;
}
}
- if (bits & 1) levval = 0xff;
- if (lvl) {
+ if (bits & 2) levval = 0xff;
+ if (*lvl) {
if ((i = logger_lookup(1, lvl)) == -1) return -1;
- levval |= (bits & 2) ? LOG_MASK(i) : LOG_UPTO(i);
- if (bits & 4) levval = ~levval;
+ levval |= (bits & 4) ? LOG_MASK(i) : LOG_UPTO(i);
+ if (bits & 8) levval = ~levval;
}
for (i = 0, set = levval; set; set >>= 1, i++)
- if (set & 0x1) file->facility[i] |= facval;
+ if (set & 0x1) file->facility[i] |= ~facval;
for (i = 0; i < LOG_NFACILITIES; facval >>= 1, i++)
- if (facval & 0x1) file->level[i] |= levval;
+ if (facval & 0x1) file->level[i] |= ~levval;
}
return 0;
@@ -213,9 +163,7 @@ static int parse_config_file(void)
*/
if (toys.optflags & FLAG_K) {
file = xzalloc(sizeof(struct logfile));
- file->filename = "/dev/kmsg";
- memset(file->level, 0xFF, sizeof(file->level));
- memset(file->facility, 0xFFFFFFFF, sizeof(file->facility));
+ file->filename = xstrdup("/dev/kmsg");
TT.lfiles = file;
return 0;
}
@@ -228,9 +176,6 @@ static int parse_config_file(void)
if (toys.optflags & FLAG_R) {
file = xzalloc(sizeof(struct logfile));
file->filename = xmsprintf("@%s",TT.remote_log);
- file->isNetwork = 1;
- memset(file->level, 0xFF, sizeof(file->level));
- memset(file->facility, 0xFFFFFFFF, sizeof(file->facility));
TT.lfiles = file;
if (!(toys.optflags & FLAG_L)) return 0;
}
@@ -238,8 +183,7 @@ static int parse_config_file(void)
* Read config file and add logfiles to the list
* with their configuration.
*/
- fp = fopen(TT.config_file, "r");
- if (!fp && (toys.optflags & FLAG_f))
+ if (!(fp = fopen(TT.config_file, "r")) && (toys.optflags & FLAG_f))
perror_exit("can't open '%s'", TT.config_file);
for (linelen = 0; fp;) {
@@ -264,7 +208,6 @@ static int parse_config_file(void)
if (!file) {
file = xzalloc(sizeof(struct logfile));
file->filename = xstrdup(tk[1]);
- if (*file->filename == '@') file->isNetwork = 1;
file->next = TT.lfiles;
TT.lfiles = file;
}
@@ -281,10 +224,8 @@ static int parse_config_file(void)
*/
if (!fp){
file = xzalloc(sizeof(struct logfile));
- file->filename = (toys.optflags & FLAG_O) ?
- TT.logfile : "/var/log/messages"; //DEFLOGFILE
- memset(file->level, 0xFF, sizeof(file->level));
- memset(file->facility, 0xFFFFFFFF, sizeof(file->facility));
+ file->filename = xstrdup((toys.optflags & FLAG_O) ?
+ TT.logfile : "/var/log/messages"); //DEFLOGFILE
file->next = TT.lfiles;
TT.lfiles = file;
} else fclose(fp);
@@ -300,7 +241,7 @@ static void open_logfiles(void)
char *p, *tmpfile;
long port = 514;
- if (tfd->isNetwork) {
+ if (*tfd->filename == '@') { // network
struct addrinfo *info, rp;
tmpfile = xstrdup(tfd->filename + 1);
@@ -411,12 +352,12 @@ static void logmsg(char *msg, int len)
for (; tf; tf = tf->next) {
if (tf->logfd > 0) {
- if ((tf->facility[lvl] & (1 << fac)) && (tf->level[fac] & (1<<lvl))) {
- int wlen;
- if (tf->isNetwork)
+ if (!((tf->facility[lvl] & (1 << fac)) || (tf->level[fac] & (1<<lvl)))) {
+ int wlen, isNetwork = *tf->filename == '@';
+ if (isNetwork)
wlen = sendto(tf->logfd, omsg, olen, 0, (struct sockaddr*)&tf->saddr, sizeof(tf->saddr));
else wlen = write_rotate(tf, len);
- if (wlen < 0) perror_msg("write failed file : %s ", tf->filename + tf->isNetwork);
+ if (wlen < 0) perror_msg("write failed file : %s ", tf->filename + isNetwork);
}
}
}
@@ -431,15 +372,18 @@ static void cleanup(void)
while (TT.lsocks) {
struct unsocks *fnode = TT.lsocks;
- if (fnode->sd >= 0) close(fnode->sd);
+ if (fnode->sd >= 0) {
+ close(fnode->sd);
+ unlink(fnode->path);
+ }
TT.lsocks = fnode->next;
free(fnode);
}
- unlink("/dev/log");
while (TT.lfiles) {
struct logfile *fnode = TT.lfiles;
+ free(fnode->filename);
if (fnode->logfd >= 0) close(fnode->logfd);
TT.lfiles = fnode->next;
free(fnode);
@@ -455,8 +399,9 @@ static void signal_handler(int sig)
void syslogd_main(void)
{
struct unsocks *tsd;
- int maxfd, retval, last_len=0;
+ int nfds, retval, last_len=0;
struct timeval tv;
+ fd_set rfds; // fds for reading
char *temp, *buffer = (toybuf +2048), *last_buf = (toybuf + 3072); //these two buffs are of 1K each
if ((toys.optflags & FLAG_p) && (strlen(TT.unix_socket) > 108))
@@ -479,7 +424,30 @@ init_jumpin:
TT.lsocks = tsd;
}
}
- if (!open_unix_socks()) {
+ /*
+ * initializes unsock_t structure
+ * and opens socket for reading
+ * and adds to global lsock list.
+ */
+ nfds = 0;
+ for (tsd = TT.lsocks; tsd; tsd = tsd->next) {
+ tsd->sdu.sun_family = AF_UNIX;
+ strcpy(tsd->sdu.sun_path, tsd->path);
+ tsd->sd = socket(AF_UNIX, SOCK_DGRAM, 0);
+ if (tsd->sd < 0) {
+ perror_msg("OPEN SOCKS : failed");
+ continue;
+ }
+ unlink(tsd->sdu.sun_path);
+ if (bind(tsd->sd, (struct sockaddr *) &tsd->sdu, sizeof(tsd->sdu))) {
+ perror_msg("BIND SOCKS : failed sock : %s", tsd->sdu.sun_path);
+ close(tsd->sd);
+ continue;
+ }
+ chmod(tsd->path, 0777);
+ nfds++;
+ }
+ if (!nfds) {
error_msg("Can't open single socket for listenning.");
goto clean_and_exit;
}
@@ -499,36 +467,27 @@ init_jumpin:
if (parse_config_file() == -1) goto clean_and_exit;
open_logfiles();
if (!(toys.optflags & FLAG_n)) {
+ daemonize();
//don't daemonize again if SIGHUP received.
toys.optflags |= FLAG_n;
}
- {
- int pid_fd = open("/var/run/syslogd.pid", O_CREAT | O_WRONLY | O_TRUNC, 0666);
- if (pid_fd > 0) {
- unsigned pid = getpid();
- int len = sprintf(toybuf, "%u\n", pid);
- write(pid_fd, toybuf, len);
- close(pid_fd);
- }
- }
+ xpidfile("syslogd");
logmsg("<46>Toybox: syslogd started", 27); //27 : the length of message
for (;;) {
- maxfd = addrfds();
+ // Add opened socks to rfds for select()
+ FD_ZERO(&rfds);
+ for (tsd = TT.lsocks; tsd; tsd = tsd->next) FD_SET(tsd->sd, &rfds);
+ FD_SET(TT.sigfd[0], &rfds);
tv.tv_usec = 0;
tv.tv_sec = TT.interval*60;
- retval = select(maxfd + 1, &TT.rfds, NULL, NULL, (TT.interval)?&tv:NULL);
- if (retval < 0) { /* Some error. */
- if (errno == EINTR) continue;
- perror_msg("Error in select ");
- continue;
- }
- if (!retval) { /* Timed out */
- logmsg("<46>-- MARK --", 14);
- continue;
+ retval = select(TT.sigfd[0] + 1, &rfds, NULL, NULL, (TT.interval)?&tv:NULL);
+ if (retval < 0) {
+ if (errno != EINTR) perror_msg("Error in select ");
}
- if (FD_ISSET(TT.sigfd[0], &TT.rfds)) { /* May be a signal */
+ else if (!retval) logmsg("<46>-- MARK --", 14);
+ else if (FD_ISSET(TT.sigfd[0], &rfds)) { /* May be a signal */
unsigned char sig;
if (read(TT.sigfd[0], &sig, 1) != 1) {
@@ -555,11 +514,10 @@ init_jumpin:
goto init_jumpin;
default: break;
}
- }
- if (retval > 0) { /* Some activity on listen sockets. */
+ } else { /* Some activity on listen sockets. */
for (tsd = TT.lsocks; tsd; tsd = tsd->next) {
int sd = tsd->sd;
- if (FD_ISSET(sd, &TT.rfds)) {
+ if (FD_ISSET(sd, &rfds)) {
int len = read(sd, buffer, 1023); //buffer is of 1K, hence readingonly 1023 bytes, 1 for NUL
if (len > 0) {
buffer[len] = '\0';
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-02 07:43:48 +0000