Kim Woelders
115 lines
2.5 KiB
C
115 lines
2.5 KiB
C
/*
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* Logging functions
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <syslog.h>
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#include <unistd.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include "nvt_log.h"
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#include <sys/syscall.h>
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#define gettid() (pid_t)syscall(__NR_gettid)
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char log_level = 0;
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static char log_threshold = LOG_DEBUG;
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static FILE *log_dest = NULL;
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void nvt_log_dest(int dest)
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{
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switch (dest)
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{
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default:
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case NVT_LOG_SYSLOG:
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log_dest = NULL;
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break;
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case NVT_LOG_STDOUT:
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log_dest = stdout;
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break;
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case NVT_LOG_STDERR:
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log_dest = stderr;
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break;
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}
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}
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void nvt_log_level(int quiet, int level)
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{
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if (quiet)
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log_threshold = LOG_NOTICE;
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log_level = level;
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}
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static const char *_hms_txt(char *buf, unsigned int len)
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{
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struct timeval tv;
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unsigned int sod, hh, mm, ss;
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gettimeofday(&tv, NULL);
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sod = tv.tv_sec % (24 * 3600);
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hh = sod / 3600;
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mm = (sod - hh * 3600) / 60;
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ss = sod - hh * 3600 - mm * 60;
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snprintf(buf, len, "%02d:%02d:%02d.%06d",
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hh, mm, ss, (unsigned int)tv.tv_usec);
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return buf;
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}
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void nvt_log(int prio, const char *fmt, ...)
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{
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va_list arg;
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char buf[256], buft[64];
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const char *eol;
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int len;
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if (prio > log_threshold)
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return;
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va_start(arg, fmt);
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len = vsnprintf(buf, sizeof(buf), fmt, arg);
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if (log_dest)
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{
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eol = (len > 0 && buf[len - 1] != '\n') ? "\n" : "";
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fprintf(log_dest, "%s: [%d] %d: %s%s",
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_hms_txt(buft, sizeof(buft)), gettid(), prio, buf, eol);
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}
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else
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{
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syslog(prio, "[%d] %s", gettid(), buf);
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}
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va_end(arg);
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}
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#define BPL 16 /* Bytes per line */
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void nvt_log_buf(int prio, const char *txt, const void *ptr_, unsigned int len)
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{
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unsigned int ix, i, imax;
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int l, n;
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char buf[128];
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const unsigned char *ptr = ptr_;
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for (ix = 0; ix < len || (len == 0 && ix == 0); ix += BPL)
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{
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n = snprintf(buf, sizeof(buf), "%s: %04x:", txt, ix);
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if (n <= 0)
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return; /* Just playing it safe */
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imax = (len - ix < BPL) ? len - ix : BPL;
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for (i = 0; i < imax; i++)
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{
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l = snprintf(buf + n, sizeof(buf) - n, " %02x", *ptr++);
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if (l <= 0)
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return; /* Just playing it safe */
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n += l;
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}
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nvt_log(prio, "%s\n", buf);
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}
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}
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