patch from Alberto Accomazzi <aaccomazzi@cfa.harvard.edu> to add
[rsync/rsync.git] / log.c
diff --git a/log.c b/log.c
index 8be3605..18e1da0 100644 (file)
--- a/log.c
+++ b/log.c
   */
 #include "rsync.h"
 
+static FILE *logfile;
 
-/* this is the rsync debugging function. Call it with FINFO or FERROR */
-void rprintf(int fd, const char *format, ...)
+
+static void logit(int priority, char *buf)
+{
+       if (logfile) {
+               fprintf(logfile,"%s [%d] %s", 
+                       timestring(time(NULL)), (int)getpid(), buf);
+               fflush(logfile);
+       } else {
+               syslog(priority, "%s", buf);
+       }
+}
+
+void log_open(void)
+{
+       static int initialised;
+       int options = LOG_PID;
+       time_t t;
+       char *logf;
+
+       if (initialised) return;
+       initialised = 1;
+
+       /* this looks pointless, but it is needed in order for the
+          C library on some systems to fetch the timezone info
+          before the chroot */
+       t = time(NULL);
+       localtime(&t);
+
+       /* optionally use a log file instead of syslog */
+       logf = lp_log_file();
+       if (logf && *logf) {
+               extern int orig_umask;
+               int old_umask = umask(022 | orig_umask);
+               logfile = fopen(logf, "a");
+               umask(old_umask);
+               return;
+       }
+
+#ifdef LOG_NDELAY
+       options |= LOG_NDELAY;
+#endif
+
+#ifdef LOG_DAEMON
+       openlog("rsyncd", options, lp_syslog_facility());
+#else
+       openlog("rsyncd", options);
+#endif
+
+#ifndef LOG_NDELAY
+       logit(LOG_INFO,"rsyncd started\n");
+#endif
+}
+               
+
+/* this is the rsync debugging function. Call it with FINFO, FERROR or FLOG */
+ void rprintf(int fd, const char *format, ...)
 {
        va_list ap;  
        char buf[1024];
        int len;
        FILE *f=NULL;
        extern int am_daemon;
+       /* recursion can happen with certain fatal conditions */
 
        va_start(ap, format);
        len = vslprintf(buf, sizeof(buf)-1, format, ap);
        va_end(ap);
 
-       if (len < 0) exit_cleanup(1);
+       if (len < 0) exit_cleanup(RERR_MESSAGEIO);
 
-       if (len > sizeof(buf)-1) exit_cleanup(1);
+       if (len > sizeof(buf)-1) exit_cleanup(RERR_MESSAGEIO);
 
        buf[len] = 0;
 
+       if (fd == FLOG) {
+               if (am_daemon) logit(LOG_INFO, buf);
+               return;
+       }
+
        if (am_daemon) {
-               static int initialised;
+               static int depth;
                int priority = LOG_INFO;
                if (fd == FERROR) priority = LOG_WARNING;
 
-               if (!initialised) {
-                       initialised = 1;
-#ifdef LOG_DAEMON
-                       openlog("rsyncd", LOG_PID, lp_syslog_facility());
-#else
-                       openlog("rsyncd", LOG_PID);
-#endif
+               if (depth) return;
+
+               depth++;
+
+               log_open();
+               if (!io_multiplex_write(fd, buf, strlen(buf))) {
+                       logit(priority, buf);
                }
-               
-               syslog(priority, "%s", buf);
+
+               depth--;
                return;
        }
 
@@ -73,9 +134,11 @@ void rprintf(int fd, const char *format, ...)
                        f = stdout;
        } 
 
-       if (!f) exit_cleanup(1);
+       if (!f) exit_cleanup(RERR_MESSAGEIO);
+
+       if (fwrite(buf, len, 1, f) != 1) exit_cleanup(RERR_MESSAGEIO);
 
-       if (fwrite(buf, len, 1, f) != 1) exit_cleanup(1);
+       if (buf[len-1] == '\r' || buf[len-1] == '\n') fflush(f);
 }
 
 void rflush(int fd)
@@ -87,6 +150,10 @@ void rflush(int fd)
                return;
        }
 
+       if (fd == FLOG) {
+               return;
+       } 
+
        if (fd == FERROR) {
                f = stderr;
        } 
@@ -99,7 +166,159 @@ void rflush(int fd)
                        f = stdout;
        } 
 
-       if (!f) exit_cleanup(1);
+       if (!f) exit_cleanup(RERR_MESSAGEIO);
        fflush(f);
 }
 
+
+
+/* a generic logging routine for send/recv, with parameter
+   substitiution */
+static void log_formatted(int fd,
+                         char *format, char *op, struct file_struct *file,
+                         struct stats *initial_stats)
+{
+       extern int module_id;
+       extern char *auth_user;
+       char buf[1024];
+       char buf2[1024];
+       char *p, *s, *n;
+       int l;
+       extern struct stats stats;              
+       extern int am_sender;
+       int64 b;
+
+       strlcpy(buf, format, sizeof(buf)-1);
+       
+       for (s=&buf[0]; 
+            s && (p=strchr(s,'%')); ) {
+               n = NULL;
+               s = p + 1;
+
+               switch (p[1]) {
+               case 'h': n = client_name(0); break;
+               case 'a': n = client_addr(0); break;
+               case 'l': 
+                       slprintf(buf2,sizeof(buf2)-1,"%.0f", 
+                                (double)file->length); 
+                       n = buf2;
+                       break;
+               case 'p': 
+                       slprintf(buf2,sizeof(buf2)-1,"%d", 
+                                (int)getpid()); 
+                       n = buf2;
+                       break;
+               case 'o': n = op; break;
+               case 'f': 
+                       slprintf(buf2, sizeof(buf2)-1, "%s/%s", 
+                                file->basedir?file->basedir:"", 
+                                f_name(file));
+                       clean_fname(buf2);
+                       n = buf2; 
+                       if (*n == '/') n++;
+                       break;
+               case 'm': n = lp_name(module_id); break;
+               case 't': n = timestring(time(NULL)); break;
+               case 'P': n = lp_path(module_id); break;
+               case 'u': n = auth_user; break;
+               case 'b': 
+                       if (am_sender) {
+                               b = stats.total_written - 
+                                       initial_stats->total_written;
+                       } else {
+                               b = stats.total_read - 
+                                       initial_stats->total_read;
+                       }
+                       slprintf(buf2,sizeof(buf2)-1,"%.0f", (double)b); 
+                       n = buf2;
+                       break;
+               case 'c': 
+                       if (!am_sender) {
+                               b = stats.total_written - 
+                                       initial_stats->total_written;
+                       } else {
+                               b = stats.total_read - 
+                                       initial_stats->total_read;
+                       }
+                       slprintf(buf2,sizeof(buf2)-1,"%.0f", (double)b); 
+                       n = buf2;
+                       break;
+               }
+
+               if (!n) continue;
+
+               l = strlen(n);
+
+               if ((l-1) + ((int)(s - &buf[0])) > sizeof(buf)) {
+                       rprintf(FERROR,"buffer overflow expanding %%%c - exiting\n",
+                               p[0]);
+                       exit_cleanup(RERR_MESSAGEIO);
+               }
+
+               if (l != 2) {
+                       memmove(s+(l-1), s+1, strlen(s+1)+1);
+               }
+               memcpy(p, n, l);
+
+               s = p+l;
+       }
+
+       rprintf(fd,"%s\n", buf);
+}
+
+/* log the outgoing transfer of a file */
+void log_send(struct file_struct *file, struct stats *initial_stats)
+{
+       extern int module_id;
+       extern int am_server;
+       extern char *log_format;
+
+       if (lp_transfer_logging(module_id)) {
+               log_formatted(FLOG, lp_log_format(module_id), "send", file, initial_stats);
+       } else if (log_format && !am_server) {
+               log_formatted(FINFO, log_format, "send", file, initial_stats);
+       }
+}
+
+/* log the incoming transfer of a file */
+void log_recv(struct file_struct *file, struct stats *initial_stats)
+{
+       extern int module_id;
+       extern int am_server;
+       extern char *log_format;
+
+       if (lp_transfer_logging(module_id)) {
+               log_formatted(FLOG, lp_log_format(module_id), "send", file, initial_stats);
+       } else if (log_format && !am_server) {
+               log_formatted(FINFO, log_format, "send", file, initial_stats);
+       }
+}
+
+/* called when the transfer is interrupted for some reason */
+void log_exit(int code)
+{
+       if (code == 0) {
+               extern struct stats stats;              
+               rprintf(FLOG,"wrote %.0f bytes  read %.0f bytes  total size %.0f\n",
+                       (double)stats.total_written,
+                       (double)stats.total_read,
+                       (double)stats.total_size);
+       } else {
+               rprintf(FLOG,"transfer interrupted (code %d)\n", code);
+       }
+}
+
+/* log the incoming transfer of a file for interactive use, this
+   will be called at the end where the client was run 
+   
+   it i called when a file starts to be transferred
+*/
+void log_transfer(struct file_struct *file, char *fname)
+{
+       extern int verbose;
+
+       if (!verbose) return;
+
+       rprintf(FINFO,"%s\n", fname);
+}
+