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#include "daemon-server.h"
#include "daemon-log.h"
#include <syslog.h>
#include <assert.h>
struct backend {
int id;
void (*log)(log_state *s, void **state, int type, const char *message);
};
static void log_syslog(log_state *s, void **state, int type, const char *message)
{
int prio;
if (!*state) { /* initialize */
*state = (void *)1;
openlog(s->name, LOG_PID, LOG_DAEMON);
}
switch (type) {
case DAEMON_LOG_INFO: prio = LOG_INFO; break;
case DAEMON_LOG_WARN: prio = LOG_WARNING; break;
case DAEMON_LOG_FATAL: prio = LOG_CRIT; break;
default: prio = LOG_DEBUG; break;
}
syslog(prio, "%s", message);
}
static void log_stderr(log_state *s, void **state, int type, const char *message)
{
const char *prefix;
switch (type) {
case DAEMON_LOG_INFO: prefix = "I: "; break;
case DAEMON_LOG_WARN: prefix = "W: " ; break;
case DAEMON_LOG_ERROR: /* fall through */
case DAEMON_LOG_FATAL: prefix = "E: " ; break;
default: prefix = ""; break;
}
fprintf(stderr, "%s%s\n", prefix, message);
}
struct backend backend[] = {
{ DAEMON_LOG_OUTLET_SYSLOG, log_syslog },
{ DAEMON_LOG_OUTLET_STDERR, log_stderr },
{ 0, 0 }
};
void daemon_log(log_state *s, int type, const char *message) {
int i = 0;
while ( backend[i].id ) {
if ( (s->log_config[type] & backend[i].id) == backend[i].id )
backend[i].log( s, &s->backend_state[i], type, message );
++ i;
}
}
static int _type_interesting(log_state *s, int type) {
int i = 0;
while ( backend[i].id ) {
if ( (s->log_config[type] & backend[i].id) == backend[i].id )
return 1;
++ i;
}
return 0;
}
void daemon_logf(log_state *s, int type, const char *fmt, ...) {
char *buf;
va_list ap;
va_start(ap, fmt);
if (dm_vasprintf(&buf, fmt, ap) >= 0) {
daemon_log(s, type, buf);
dm_free(buf);
} /* else return_0 */
va_end(ap);
}
struct log_line_baton {
log_state *s;
int type;
const char *prefix;
};
static int _log_line(const char *line, void *baton) {
struct log_line_baton *b = baton;
daemon_logf(b->s, b->type, "%s%s", b->prefix, line);
return 0;
}
void daemon_log_cft(log_state *s, int type, const char *prefix, const struct dm_config_node *n)
{
struct log_line_baton b = { .s = s, .type = type, .prefix = prefix };
if (!_type_interesting(s, type))
return;
dm_config_write_node(n, &_log_line, &b);
}
void daemon_log_multi(log_state *s, int type, const char *prefix, const char *msg)
{
struct log_line_baton b = { .s = s, .type = type, .prefix = prefix };
char *buf;
char *pos;
if (!_type_interesting(s, type))
return;
buf = dm_strdup(msg);
pos = buf;
if (!buf)
return; /* _0 */
while (pos) {
char *next = strchr(pos, '\n');
if (next)
*next = 0;
_log_line(pos, &b);
pos = next ? next + 1 : 0;
}
dm_free(buf);
}
void daemon_log_enable(log_state *s, int outlet, int type, int enable)
{
assert(type < 32);
if (enable)
s->log_config[type] |= outlet;
else
s->log_config[type] &= ~outlet;
}
static int _parse_one(log_state *s, int outlet, const char *type, int enable)
{
int i;
if (!strcmp(type, "all"))
for (i = 0; i < 32; ++i)
daemon_log_enable(s, outlet, i, enable);
else if (!strcmp(type, "wire"))
daemon_log_enable(s, outlet, DAEMON_LOG_WIRE, enable);
else if (!strcmp(type, "debug"))
daemon_log_enable(s, outlet, DAEMON_LOG_DEBUG, enable);
else
return 0;
return 1;
}
int daemon_log_parse(log_state *s, int outlet, const char *types, int enable)
{
char *buf;
char *pos;
if (!types || !types[0])
return 1;
if (!(buf = dm_strdup(types)))
return 0;
pos = buf;
while (pos) {
char *next = strchr(pos, ',');
if (next)
*next = 0;
if (!_parse_one(s, outlet, pos, enable)) {
dm_free(buf);
return 0;
}
pos = next ? next + 1 : 0;
}
dm_free(buf);
return 1;
}
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