diff options
Diffstat (limited to 'syslogd.c')
| -rw-r--r-- | syslogd.c | 104 |
1 files changed, 103 insertions, 1 deletions
@@ -61,6 +61,7 @@ static inline _syscall3(int, klogctl, int, type, char *, b, int, len); /* SYSLOG_NAMES defined to pull some extra junk from syslog.h */ #define SYSLOG_NAMES #include <sys/syslog.h> +#include <sys/uio.h> /* Path for the file where all log messages are written */ #define __LOG_FILE "/var/log/messages" @@ -76,6 +77,18 @@ static int MarkInterval = 20 * 60; /* localhost's name */ static char LocalHostName[32]; +#ifdef BB_FEATURE_REMOTE_LOG +#include <netinet/in.h> +/* udp socket for logging to remote host */ +static int remotefd = -1; +/* where do we log? */ +static char *RemoteHost; +/* what port to log to? */ +static int RemotePort = 514; +/* To remote log or not to remote log, that is the question. */ +static int doRemoteLog = FALSE; +#endif + /* Note: There is also a function called "message()" in init.c */ /* Print a message to the log file. */ static void message (char *fmt, ...) __attribute__ ((format (printf, 1, 2))); @@ -151,6 +164,30 @@ static void logMessage (int pri, char *msg) /* now spew out the message to wherever it is supposed to go */ message("%s %s %s %s\n", timestamp, LocalHostName, res, msg); + +#ifdef BB_FEATURE_REMOTE_LOG + /* send message to remote logger */ + if ( -1 != remotefd){ +#define IOV_COUNT 2 + struct iovec iov[IOV_COUNT]; + struct iovec *v = iov; + + bzero(&res, sizeof(res)); + snprintf(res, sizeof(res), "<%d>", pri); + v->iov_base = res ; + v->iov_len = strlen(res); + v++; + + v->iov_base = msg; + v->iov_len = strlen(msg); + + if ( -1 == writev(remotefd,iov, IOV_COUNT)){ + fatalError("syslogd: cannot write to remote file handle on" + "%s:%d\n",RemoteHost,RemotePort); + } + } +#endif + } static void quit_signal(int sig) @@ -191,8 +228,9 @@ static int serveConnection (int conn) while (isdigit (*(++p))) { pri = 10 * pri + (*p - '0'); } - if (pri & ~(LOG_FACMASK | LOG_PRIMASK)) + if (pri & ~(LOG_FACMASK | LOG_PRIMASK)){ pri = (LOG_USER | LOG_NOTICE); + } } else if (c == '\n') { *q++ = ' '; } else if (iscntrl (c) && (c < 0177)) { @@ -210,6 +248,43 @@ static int serveConnection (int conn) return (0); } + +#ifdef BB_FEATURE_REMOTE_LOG +static void init_RemoteLog (void){ + + struct sockaddr_in remoteaddr; + struct hostent *hostinfo; + int len = sizeof(remoteaddr); + + bzero(&remoteaddr, len); + + remotefd = socket(AF_INET, SOCK_DGRAM, 0); + + if (remotefd < 0) { + fatalError("syslogd: cannot create socket\n"); + } + + hostinfo = (struct hostent *) gethostbyname(RemoteHost); + + if (!hostinfo) { + fatalError("syslogd: cannot resolve remote host name [%s]\n", RemoteHost); + } + + remoteaddr.sin_family = AF_INET; + remoteaddr.sin_addr = *(struct in_addr *) *hostinfo->h_addr_list; + remoteaddr.sin_port = htons(RemotePort); + + /* + Since we are using UDP sockets, connect just sets the default host and port + for future operations + */ + if ( 0 != (connect(remotefd, (struct sockaddr *) &remoteaddr, len))){ + fatalError("syslogd: cannot connect to remote host %s:%d\n", RemoteHost, RemotePort); + } + +} +#endif + static void doSyslogd (void) __attribute__ ((noreturn)); static void doSyslogd (void) { @@ -254,6 +329,12 @@ static void doSyslogd (void) FD_ZERO (&fds); FD_SET (sock_fd, &fds); + #ifdef BB_FEATURE_REMOTE_LOG + if (doRemoteLog == TRUE){ + init_RemoteLog(); + } + #endif + logMessage (0, "syslogd started: BusyBox v" BB_VER " (" BB_BT ")"); for (;;) { @@ -322,6 +403,13 @@ static void doKlogd (void) signal(SIGKILL, klogd_signal); signal(SIGTERM, klogd_signal); signal(SIGHUP, SIG_IGN); + +#ifdef BB_FEATURE_REMOTE_LOG + if (doRemoteLog == TRUE){ + init_RemoteLog(); + } +#endif + logMessage(0, "klogd started: " "BusyBox v" BB_VER " (" BB_BT ")"); @@ -423,6 +511,20 @@ extern int syslogd_main(int argc, char **argv) logFilePath = *(++argv1); stopDoingThat = TRUE; break; +#ifdef BB_FEATURE_REMOTE_LOG + case 'R': + if (--argc == 0) { + usage(syslogd_usage); + } + RemoteHost = *(++argv1); + if ( (p = strchr(RemoteHost, ':'))){ + RemotePort = atoi(p+1); + *p = '\0'; + } + doRemoteLog = TRUE; + stopDoingThat = TRUE; + break; +#endif default: usage(syslogd_usage); } |