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#include "beaker_globals.h"
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <time.h>
enum {
LOG_LEVEL_DEBUG,
LOG_LEVEL_INFO,
LOG_LEVEL_WARN,
LOG_LEVEL_ERROR,
LOG_LEVEL_NONE
};
static int configured_log_level(void) {
const char *level = getenv("BEAKER_LOG_LEVEL");
if (level == NULL || strcasecmp(level, "INFO") == 0)
return LOG_LEVEL_INFO;
if (strcasecmp(level, "DEBUG") == 0)
return LOG_LEVEL_DEBUG;
if (strcasecmp(level, "WARN") == 0 || strcasecmp(level, "WARNING") == 0)
return LOG_LEVEL_WARN;
if (strcasecmp(level, "ERROR") == 0)
return LOG_LEVEL_ERROR;
if (strcasecmp(level, "NONE") == 0 || strcasecmp(level, "OFF") == 0)
return LOG_LEVEL_NONE;
return LOG_LEVEL_INFO;
}
static int message_log_level(const char *level) {
if (strcasecmp(level, "DEBUG") == 0)
return LOG_LEVEL_DEBUG;
if (strcasecmp(level, "INFO") == 0 || strcasecmp(level, "ACCESS") == 0)
return LOG_LEVEL_INFO;
if (strcasecmp(level, "WARN") == 0 || strcasecmp(level, "WARNING") == 0 ||
strcasecmp(level, "SECURITY") == 0)
return LOG_LEVEL_WARN;
return LOG_LEVEL_ERROR;
}
static void log_timestamp(char *buffer, size_t size) {
struct timespec now;
struct tm local;
clock_gettime(CLOCK_REALTIME, &now);
localtime_r(&now.tv_sec, &local);
strftime(buffer, size, "%Y-%m-%dT%H:%M:%S%z", &local);
}
static void log_safe_value(char *output, const char *input, size_t size) {
size_t i;
for (i = 0; i + 1 < size && input[i] != '\0'; i++) {
unsigned char c = input[i];
output[i] = c <= ' ' || c == 127 || c == '"' || c == '\\' ? '_' : c;
}
output[i] = '\0';
}
void beaker_log(const char *level, const char *format, ...) {
char message[BUFFER_SIZE];
char timestamp[32];
va_list args;
if (message_log_level(level) < configured_log_level())
return;
va_start(args, format);
vsnprintf(message, sizeof(message), format, args);
va_end(args);
size_t length = strlen(message);
while (length > 0 &&
(message[length - 1] == '\n' || message[length - 1] == '\r'))
message[--length] = '\0';
log_timestamp(timestamp, sizeof(timestamp));
flockfile(stderr);
fprintf(stderr, "%s %-6s %s\n", timestamp, level, message);
funlockfile(stderr);
}
void beaker_log_errno_format(const char *level, const char *format, ...) {
char message[BUFFER_SIZE];
int error = errno;
va_list args;
va_start(args, format);
vsnprintf(message, sizeof(message), format, args);
va_end(args);
size_t length = strlen(message);
while (length > 0 &&
(message[length - 1] == '\n' || message[length - 1] == '\r'))
message[--length] = '\0';
if (length > 0 && message[length - 1] == '.')
message[length - 1] = '\0';
beaker_log(level, "%s: %s", message, strerror(error));
}
void beaker_log_errno(const char *message) {
int error = errno;
beaker_log("ERROR", "%s: %s", message, strerror(error));
}
void beaker_log_request(const char *remote_addr, const char *method,
const char *path, int status, size_t response_size,
double duration_ms) {
char safe_method[16];
char safe_path[MAX_PATH_LEN];
log_safe_value(safe_method, method, sizeof(safe_method));
log_safe_value(safe_path, path, sizeof(safe_path));
beaker_log("ACCESS", "%s \"%s %s\" %03d %zu %.3fms", remote_addr, safe_method,
safe_path, status, response_size, duration_ms);
}
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