source: trunk/third-party/shttpd/log.c @ 5822

/*
 * Copyright (c) 2004-2005 Sergey Lyubka <valenok@gmail.com>
 * All rights reserved
 *
 * "THE BEER-WARE LICENSE" (Revision 42):
 * Sergey Lyubka wrote this file.  As long as you retain this notice you
 * can do whatever you want with this stuff. If we meet some day, and you think
 * this stuff is worth it, you can buy me a beer in return.
 */

#include "defs.h"

/*
 * Log function
 */
void
elog(int flags, struct conn *c, const char *fmt, ...)
{
        char    date[64], buf[URI_MAX];
        int     len;
        FILE    *fp = c == NULL ? NULL : c->ctx->error_log;
        va_list ap;

        /* Print to stderr */
        if (c == NULL || !IS_TRUE(c->ctx, OPT_INETD)) {
                va_start(ap, fmt);
                (void) vfprintf(stderr, fmt, ap);
                (void) fputc('\n', stderr);
                va_end(ap);
        }

        strftime(date, sizeof(date), "%a %b %d %H:%M:%S %Y",
            localtime(&current_time));

        len = my_snprintf(buf, sizeof(buf),
            "[%s] [error] [client %s] \"%s\" ",
            date, c ? inet_ntoa(c->sa.u.sin.sin_addr) : "-",
            c && c->request ? c->request : "-");

        va_start(ap, fmt);
        (void) vsnprintf(buf + len, sizeof(buf) - len, fmt, ap);
        va_end(ap);

        buf[sizeof(buf) - 1] = '\0';

        if (fp != NULL && (flags & (E_FATAL | E_LOG))) {
                (void) fprintf(fp, "%s\n", buf);
                (void) fflush(fp);
        }

        if (flags & E_FATAL)
                exit(EXIT_FAILURE);
}

void
log_access(FILE *fp, const struct conn *c)
{
        static const struct vec dash = {"-", 1};

        const struct vec        *user = &c->ch.user.v_vec;
        const struct vec        *referer = &c->ch.referer.v_vec;
        const struct vec        *user_agent = &c->ch.useragent.v_vec;
        char                    date[64], buf[URI_MAX], *q1 = "\"", *q2 = "\"";

        if (user->len == 0)
                user = &dash;

        if (referer->len == 0) {
                referer = &dash;
                q1 = "";
        }

        if (user_agent->len == 0) {
                user_agent = &dash;
                q2 = "";
        }

        (void) strftime(date, sizeof(date), "%d/%b/%Y:%H:%M:%S",
                        localtime(&c->birth_time));

        (void) my_snprintf(buf, sizeof(buf),
            "%s - %.*s [%s %+05d] \"%s\" %d %lu %s%.*s%s %s%.*s%s",
            inet_ntoa(c->sa.u.sin.sin_addr), user->len, user->ptr,
            date, tz_offset, c->request ? c->request : "-",
            c->status, (unsigned long) c->loc.io.total,
            q1, referer->len, referer->ptr, q1,
            q2, user_agent->len, user_agent->ptr, q2);

        if (fp != NULL) {
                (void) fprintf(fp, "%s\n", buf);
                (void) fflush(fp);
        }
}