added logging

Sun, 06 May 2012 10:09:27 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sun, 06 May 2012 10:09:27 +0200
changeset 28
f387669912e8
parent 27
05b7576dca2b
child 29
e8619defde14

added logging

src/server/daemon/config.c file | annotate | diff | comparison | revisions
src/server/daemon/log.c file | annotate | diff | comparison | revisions
src/server/daemon/log.h file | annotate | diff | comparison | revisions
src/server/daemon/objs.mk file | annotate | diff | comparison | revisions
src/server/daemon/webserver.c file | annotate | diff | comparison | revisions
src/server/ucx/string.c file | annotate | diff | comparison | revisions
src/server/ucx/string.h file | annotate | diff | comparison | revisions
--- a/src/server/daemon/config.c	Mon Feb 27 17:20:42 2012 +0100
+++ b/src/server/daemon/config.c	Sun May 06 10:09:27 2012 +0200
@@ -42,6 +42,7 @@
 #include "httplistener.h"
 #include "config.h"
 #include "func.h"
+#include "log.h"
 #include "configmanager.h"
 
 #include "vserver.h"
@@ -195,9 +196,25 @@
 }
 
 int cfg_handle_logfile(ServerConfiguration *cfg, ServerConfigObject *obj) {
-    /* TODO: log files */
+    sstr_t file = cfg_directivelist_get_str(obj->directives, sstr("File"));
+    sstr_t lvl = cfg_directivelist_get_str(obj->directives, sstr("Level"));
+    
+    if(file.ptr == NULL || lvl.ptr == NULL) {
+        /* missing log file parameters */
+        return -1;
+    }
+    
+    LogConfig logcfg;
+    logcfg.file = sstrdup(file).ptr;
+    logcfg.level = sstrdub(lvl).ptr;
+    /* TODO: stdout, stderr config */
+    
+    int ret = init_log_file(&logcfg);
+    
+    free(logcfg.file);
+    free(logcfg.level);
 
-    return 0;
+    return ret;
 }
 
 int cfg_handle_authdb(ServerConfiguration *cfg, ServerConfigObject *obj) {
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/server/daemon/log.c	Sun May 06 10:09:27 2012 +0200
@@ -0,0 +1,212 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2011 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <aio.h>
+#include <time.h>
+
+#include "log.h"
+#include "../util/strbuf.h"
+
+int is_initialized = 0;
+
+int log_file_fd;
+int log_level = 0;
+
+/*
+ * if the log file is uninitialized, output is written to the ui_buffer
+ */
+sbuf_t *ui_buffer = NULL;
+
+char *log_date_month[] = {
+    "Jan",
+    "Feb",
+    "Mar",
+    "Apr",
+    "May",
+    "Jun",
+    "Jul",
+    "Aug",
+    "Sep",
+    "Oct",
+    "Nov",
+    "Dec"
+};
+
+char *log_levels[] = {
+    "error",
+    "warning",
+    "info"
+};
+
+int init_log_file(LogConfig *cfg) {
+    if(is_initialized) {
+        return 0;
+    }
+    
+    /* open the log file */
+    mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
+    log_file_fd = open(cfg->file, O_WRONLY | O_CREAT | O_APPEND, mode);
+    if(log_file_fd == -1) {
+        return -1;
+    }
+    
+    if(!strcmp(cfg->level, "ERROR")) {
+        log_level = LOG_LEVEL_ERROR;
+    } else if(!strcmp(cfg->level, "WARNING")) {
+        log_level = LOG_LEVEL_WARNING;
+    } else if(!strcmp(cfg->level, "INFO")) {
+        log_level = LOG_LEVEL_INFO;
+    }
+    
+    if(cfg->log_stdout) {
+        // TODO
+    }
+    if(cfg->log_stderr) {
+        // TODO
+    }
+    
+    
+    is_initialized = 1;
+    
+    /* if ui_buffer is not NULL, write it to the log file */
+    if(ui_buffer) {
+        size_t len = ui_buffer->length;
+        size_t r;
+        while(len > 0) {
+            r = write(log_file_fd, ui_buffer->ptr, ui_buffer->length);
+            len -= r;
+        }
+        
+        sbuf_free(ui_buffer);
+    }
+    
+    return 0;
+}
+
+void log_uninitialized_writeln(char *str, size_t len) {
+    if(ui_buffer == NULL) {
+        ui_buffer = sbuf_new(1024);
+        if(ui_buffer == NULL) {
+            return; /* TODO: critical error, exit */
+        }
+    }
+    
+    sstr_t s;
+    s.ptr = str;
+    s.length = len;
+    
+    sbuf_append(ui_buffer, s);
+    sbuf_put(ui_buffer, '\n');
+}
+
+void log_file_writeln(char *str, size_t len) {
+    if(!is_initialized) {
+        log_uninitialized_writeln(str, len);
+    }
+    
+    struct iovec io[] = {
+        { str, len },
+        { "\n", 1}
+    };
+    
+    writev(log_file_fd, io, 2); /* TODO: aio */
+}
+
+sstr_t log_get_prefix(int level) {
+    time_t t = time(NULL);
+    
+    sstr_t d;
+    d.ptr = NULL;
+    d.length = 0;
+    
+    struct tm date;
+    localtime_r(&t, &date);
+    
+    char *buf = malloc(64);
+    int len = snprintf(
+            buf,
+            64,
+            "[%02d/%s/%d:%02d:%02d:%02d] %s : ",
+            date.tm_mday,
+            log_date_month[date.tm_mon],
+            1900 + date.tm_year,
+            date.tm_hour,
+            date.tm_min,
+            date.tm_sec,
+            log_levels[level]);
+    
+    if(len > 0) {
+        d.ptr = buf;
+        d.length = len;
+    }
+    
+    return d;
+}
+
+
+/*
+ * log api functions
+ */
+
+int log_ereport(int degree, const char *format, ...) { 
+    if(degree > log_level) {
+        return 0;
+    }
+    
+    sstr_t lmsg;
+    lmsg.ptr = NULL;
+    va_list ap;
+    va_start(ap, format);
+    
+    /* create log message prefix */
+    sstr_t lpre = log_get_prefix(degree); 
+    
+    /* format message */
+    int len = vasprintf(&lmsg.ptr, format, ap);
+    lmsg.length = len;
+    
+    /* create message string */
+    sstr_t message;
+    message.length = lpre.length + len;
+    message.ptr = malloc(message.length + 1);
+    
+    message = sstrncat(2, message, lpre, lmsg);
+    
+    /* write message to the log file */ 
+    log_file_writeln(message.ptr, message.length);
+    
+    /* cleanup */
+    free(lmsg.ptr);
+    free(message.ptr);
+    
+    return 0;
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/server/daemon/log.h	Sun May 06 10:09:27 2012 +0200
@@ -0,0 +1,66 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2011 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LOG_H
+#define	LOG_H
+
+#include "../public/nsapi.h"
+#include "../ucx/string.h"
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#define LOG_LEVEL_ERROR      0
+#define LOG_LEVEL_WARNING    1
+#define LOG_LEVEL_INFO       2
+
+typedef struct {
+    char   *file;
+    char   *level;
+    int    log_stdout;
+    int    log_stderr;
+} LogConfig;
+    
+int init_log_file(LogConfig *cfg);
+
+void log_uninitialized_writeln(char *str, size_t len);
+
+void log_file_writeln(char *str, size_t len);
+
+sstr_t log_get_prefix(int level);
+
+int log_ereport(int degree, const char *format, ...);
+
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* LOG_H */
+
--- a/src/server/daemon/objs.mk	Mon Feb 27 17:20:42 2012 +0100
+++ b/src/server/daemon/objs.mk	Sun May 06 10:09:27 2012 +0200
@@ -44,6 +44,7 @@
 DAEMONOBJ += webserver.o
 DAEMONOBJ += ws-fn.o
 DAEMONOBJ += configmanager.o
+DAEMONOBJ += log.o
 
 DAEMONOBJS = $(DAEMONOBJ:%=$(DMN_OBJPRE)%)
 DAEMONSOURCE = $(DAEMONOBJ:%.o=daemon/%.c)
--- a/src/server/daemon/webserver.c	Mon Feb 27 17:20:42 2012 +0100
+++ b/src/server/daemon/webserver.c	Sun May 06 10:09:27 2012 +0200
@@ -38,6 +38,7 @@
 #include "configmanager.h"
 #include "httplistener.h"
 #include "webserver.h"
+#include "log.h"
 
 
 extern struct FuncStruct webserver_funcs[];
@@ -46,7 +47,7 @@
 int webserver_init() {
     // init NSPR
     systhread_init("webserver");
-
+    
     // init NSAPI functions
     func_init();
     add_functions(webserver_funcs);
@@ -78,7 +79,7 @@
 
     // init NSAPI functions
 
-
+    
     return 0;
 }
 
--- a/src/server/ucx/string.c	Mon Feb 27 17:20:42 2012 +0100
+++ b/src/server/ucx/string.c	Sun May 06 10:09:27 2012 +0200
@@ -99,6 +99,16 @@
     return newstring;
 }
 
+sstr_t sstrdup(sstr_t s) {
+    sstr_t newstring;
+    newstring.ptr = malloc(s.length + 1);
+    newstring.length = s.length;
+    newstring.ptr[newstring.length] = 0;
+
+    memcpy(newstring.ptr, s.ptr, s.length);
+    
+    return newstring;
+}
 
 // webserver extension
 sstr_t sstrtrim(sstr_t string) {
--- a/src/server/ucx/string.h	Mon Feb 27 17:20:42 2012 +0100
+++ b/src/server/ucx/string.h	Sun May 06 10:09:27 2012 +0200
@@ -72,6 +72,7 @@
 int sstrcmp(sstr_t s1, sstr_t s2);
 
 sstr_t sstrdub(sstr_t s);
+sstr_t sstrdup(sstr_t s);
 
 sstr_t sstrtrim(sstr_t string);
 sstr_t sstrdup_mp(UcxMempool *mp, sstr_t s);

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