See ChangeLog: Sat May 22 22:47:26 CEST 1999 Werner Koch

util/logger.c

@@ -22,6 +22,8 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
+#include <string.h>
+#include <errno.h>
 
 #include "util.h"
 #include "i18n.h"
@@ -29,6 +31,40 @@
 static char pidstring[15];
 static char *pgm_name;
 static int errorcount;
+static FILE *logfp;
+
+/****************
+ * Set the logfile to use (not yet implemneted) or, if logfile is NULL,
+ * the Fd where logoutputs should go.
+ */
+void
+log_set_logfile( const char *name, int fd )
+{
+    if( name )
+	BUG();
+
+    if( logfp && logfp != stderr && logfp != stdout )
+	fclose( logfp );
+    if( fd == 1 )
+	logfp = stdout;
+    else if( fd == 2 )
+	logfp = stderr;
+    else
+	logfp = fdopen( fd, "a" );
+    if( !logfp ) {
+	logfp = stderr;
+	log_fatal("can't open fd %d for logging: %s\n", fd, strerror(errno));
+    }
+}
+
+FILE *
+log_stream()
+{
+    if( !logfp )
+	logfp = stderr;
+    return logfp;
+}
+
 
 void
 log_set_name( const char *name )
@@ -69,19 +105,23 @@ log_get_errorcount( int clear)
 static void
 print_prefix(const char *text)
 {
+    if( !logfp )
+	logfp = stderr;
     if( pgm_name )
-	fprintf(stderr, "%s%s: %s", pgm_name, pidstring, text );
+	fprintf(logfp, "%s%s: %s", pgm_name, pidstring, text );
     else
-	fprintf(stderr, "?%s: %s", pidstring, text );
+	fprintf(logfp, "?%s: %s", pidstring, text );
 }
 
 static void
 print_prefix_f(const char *text, const char *fname)
 {
+    if( !logfp )
+	logfp = stderr;
     if( pgm_name )
-	fprintf(stderr, "%s%s:%s: %s", pgm_name, pidstring, fname, text );
+	fprintf(logfp, "%s%s:%s: %s", pgm_name, pidstring, fname, text );
     else
-	fprintf(stderr, "?%s:%s: %s", pidstring, fname, text );
+	fprintf(logfp, "?%s:%s: %s", pidstring, fname, text );
 }
 
 void
@@ -91,7 +131,7 @@ g10_log_info( const char *fmt, ... )
 
     print_prefix("");
     va_start( arg_ptr, fmt ) ;
-    vfprintf(stderr,fmt,arg_ptr) ;
+    vfprintf(logfp,fmt,arg_ptr) ;
     va_end(arg_ptr);
 }
 
@@ -102,7 +142,7 @@ g10_log_info_f( const char *fname, const char *fmt, ... )
 
     print_prefix_f("", fname);
     va_start( arg_ptr, fmt ) ;
-    vfprintf(stderr,fmt,arg_ptr) ;
+    vfprintf(logfp,fmt,arg_ptr) ;
     va_end(arg_ptr);
 }
 
@@ -113,7 +153,7 @@ g10_log_error( const char *fmt, ... )
 
     print_prefix("");
     va_start( arg_ptr, fmt ) ;
-    vfprintf(stderr,fmt,arg_ptr) ;
+    vfprintf(logfp,fmt,arg_ptr) ;
     va_end(arg_ptr);
     errorcount++;
 }
@@ -125,7 +165,7 @@ g10_log_error_f( const char *fname, const char *fmt, ... )
 
     print_prefix_f("", fname);
     va_start( arg_ptr, fmt ) ;
-    vfprintf(stderr,fmt,arg_ptr) ;
+    vfprintf(logfp,fmt,arg_ptr) ;
     va_end(arg_ptr);
     errorcount++;
 }
@@ -137,7 +177,7 @@ g10_log_fatal( const char *fmt, ... )
 
     print_prefix("fatal: ");
     va_start( arg_ptr, fmt ) ;
-    vfprintf(stderr,fmt,arg_ptr) ;
+    vfprintf(logfp,fmt,arg_ptr) ;
     va_end(arg_ptr);
     secmem_dump_stats();
     exit(2);
@@ -150,7 +190,7 @@ g10_log_fatal_f( const char *fname, const char *fmt, ... )
 
     print_prefix_f("fatal: ", fname);
     va_start( arg_ptr, fmt ) ;
-    vfprintf(stderr,fmt,arg_ptr) ;
+    vfprintf(logfp,fmt,arg_ptr) ;
     va_end(arg_ptr);
     secmem_dump_stats();
     exit(2);
@@ -192,7 +232,7 @@ g10_log_debug( const char *fmt, ... )
 
     print_prefix("DBG: ");
     va_start( arg_ptr, fmt ) ;
-    vfprintf(stderr,fmt,arg_ptr) ;
+    vfprintf(logfp,fmt,arg_ptr) ;
     va_end(arg_ptr);
 }
 
@@ -203,7 +243,7 @@ g10_log_debug_f( const char *fname, const char *fmt, ... )
 
     print_prefix_f("DBG: ", fname);
     va_start( arg_ptr, fmt ) ;
-    vfprintf(stderr,fmt,arg_ptr) ;
+    vfprintf(logfp,fmt,arg_ptr) ;
     va_end(arg_ptr);
 }
 
@@ -216,8 +256,8 @@ g10_log_hexdump( const char *text, const char *buf, size_t len )
 
     print_prefix(text);
     for(i=0; i < len; i++ )
-	fprintf(stderr, " %02X", ((const byte*)buf)[i] );
-    fputc('\n', stderr);
+	fprintf(logfp, " %02X", ((const byte*)buf)[i] );
+    fputc('\n', logfp);
 }
 
 
@@ -225,7 +265,7 @@ void
 g10_log_mpidump( const char *text, MPI a )
 {
     print_prefix(text);
-    mpi_print(stderr, a, 1 );
-    fputc('\n', stderr);
+    mpi_print(logfp, a, 1 );
+    fputc('\n', logfp);
 }