a working version?

[spider.git] / src / debug.c

diff --git a/src/debug.c b/src/debug.c
new file mode 100755 (executable)
index 0000000..d489943
--- /dev/null
+++ b/src/debug.c
@@ -0,0 +1,218 @@
+/*
+ * debug routines
+ *
+ * Copyright (c) 1998 Dirk Koopman G1TLH
+ *
+ * $Id$
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <time.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "debug.h"
+
+#define LOGDIR "./dbg"
+
+static char opened = 0;
+unsigned long dbglevel = 0;
+static int pid;
+static char *prog;
+static FILE *f;
+static int thisday;
+static time_t systime;
+
+void (*dbgproc)();
+char dbgbuf[1500];
+
+static int getdayno(time_t t)
+{
+       struct tm *tm;
+       
+       tm = gmtime(&t);
+       return tm->tm_mday;
+}
+
+static char *genlogname(char *dir, char *fn, int day, int readonly)
+{
+       static char buf[256];
+       struct stat s;
+       
+       sprintf(buf, "%s/%s_%d", dir, fn, day);
+       
+       /* look to see if this is out of date, if it is remove it */
+       if (!readonly && stat(buf, &s) >= 0) {
+               if (systime - s.st_mtime > (7*24*60*60)) 
+                       unlink(buf);
+       }
+       return buf;
+}
+
+static void rotate_log()
+{
+       int i;
+       char *fn;
+       
+       i = getdayno(systime);
+       if (i != thisday) {
+               thisday = i;
+               dbghup();
+       }
+}
+
+void dbghup()
+{
+       char *fn;
+       
+       if (f) {
+               fclose(f);
+               f = 0;
+       }
+       if (!f) {
+               if (!thisday)
+                       thisday = getdayno(systime);
+        fn = genlogname(LOGDIR, "log", thisday, 0);
+               f = fopen(fn, "a");
+    }
+       
+       if (!f)
+               die("can't open %s (%d) for debug", fn, errno);
+}
+
+char *dbgtime()
+{
+       time_t t;
+       char *ap;
+       static char buf[30];
+       
+       ap = ctime(&systime);
+       sprintf(buf, "%2.2s%3.3s%4.4s %8.8s", &ap[8], &ap[4], &ap[20], &ap[11]);
+       return buf;
+}
+
+void dbginit(char *ident)
+{
+       pid = getpid();
+       prog = strdup(ident);
+       time(&systime);
+       mkdir(LOGDIR, 01777);
+       dbghup();
+}
+
+void dbgadd(unsigned long level)
+{
+    dbglevel |= level;
+}
+
+void dbgsub(unsigned long level)
+{
+    dbglevel &= ~level;
+}
+
+void dbgset(unsigned long level)
+{
+    dbglevel = level;
+}
+
+unsigned long dbgget()
+{
+       return dbglevel;
+}
+
+void dbgread(char *s)
+{
+    unsigned long level = strtoul(s, 0, 0);
+    dbgset(level);
+}
+
+void dbg(unsigned long level, char *format, ...)
+{
+    if (f && DBGLEVEL(level)) {
+               char dbuf[100];
+        char buf[1500-100];
+               int i;
+        va_list ap;
+               
+               time(&systime);
+               
+               rotate_log();
+               
+        sprintf(dbuf, "%s %s[%d,%04x] ", dbgtime(), prog, pid, level);
+        va_start(ap, format);
+        vsprintf(buf, format, ap);
+               i = strlen(buf);
+               if (i>1 && buf[i-1] == '\n')
+                       buf[i-1] = 0;
+               fprintf(f, dbuf);
+               fprintf(f, buf);
+               fputc('\n', f);
+        va_end(ap);
+               fflush(f);
+
+               /* save for later */
+               if (dbgproc) {
+                       sprintf(dbgbuf, "%s%s", dbuf, buf);
+                       (dbgproc)(dbgbuf);
+               }
+    }
+}
+
+void dbgdump(unsigned long level, char *dir, unsigned char *s, int lth)
+{
+    if (f && DBGLEVEL(level)) {
+        int c, l;
+        unsigned char *p2, *p1;
+        char *p, buf[120];
+               
+               time(&systime);
+
+               rotate_log();
+               
+        sprintf(buf, "%s %s[%d,%04x] %s Lth: %d", dbgtime(), prog, pid, level, dir, lth);
+        fprintf(f, "%s\n", buf);
+               if (dbgproc) {
+                       (dbgproc)(buf);
+               }
+
+        /* calc how many blocks of 8 I can do */
+        c = 80 / 8;
+        c /= 3;
+
+        for (p = buf, p2 = s; p2 < s + lth; p2 += c * 8, p = buf) {
+            int i, l = c * 8;
+            sprintf(p, "%4d: ", p2 - s);
+            p += strlen(p);
+            for (p1 = p2; p1 < s + lth && p1 < p2 + l; ++p1) {
+                sprintf(p, "%02X", *p1);
+                p += strlen(p);
+            }
+            for ( ;p1 < p2 + l; ++p1) {
+                sprintf(p, "  ");
+                p += strlen(p);
+            }
+            sprintf(p, " ");
+            p += strlen(p);
+            for (p1 = p2; p1 < s + lth && p1 < p2 + l; ++p1) {
+                sprintf(p, "%c", (*p1 >= ' ' && *p1 <= 0x7e) ? *p1 : '.'); 
+                p += strlen(p);
+            }
+            fprintf(f, "%s\n", buf);
+                       if (dbgproc) {
+                               (dbgproc)(buf);
+                       }
+        }
+    }
+       fflush(f);
+}
+
+void dbgclose()
+{
+    if (f) {
+        fclose(f);
+        opened = 0;
+    }
+}