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#include <syslog.h>
#include <stdarg.h>
#include <stdio.h>
#include "antispam-plugin.h"
#include "antispam-version.h"
static void _debug(const struct antispam_debug_config *cfg,
const char *format, va_list ap)
{
const char *fmt;
if (cfg->target == ADT_NONE)
return;
T_BEGIN {
fmt = t_strconcat(cfg->prefix, format, NULL);
switch (cfg->target) {
case ADT_NONE:
break;
case ADT_SYSLOG:
vsyslog(LOG_DEBUG, fmt, ap);
break;
case ADT_STDERR:
vfprintf(stderr, fmt, ap);
fflush(stderr);
break;
}
} T_END;
}
void debug(const struct antispam_debug_config *cfg, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
_debug(cfg, fmt, args);
va_end(args);
}
void debugv(const struct antispam_debug_config *cfg, char **args)
{
size_t len, pos = 0, buflen = 1024;
char *buf;
const char *str;
T_BEGIN {
buf = t_buffer_get(buflen);
while (1) {
str = *args;
if (!str)
break;
len = strlen(str);
if (pos + len + 1 >= buflen) {
buflen = nearest_power(pos + len + 2);
buf = t_buffer_reget(buf, buflen);
}
memcpy(buf + pos, str, len);
pos += len;
buf[pos++] = ' ';
args++;
}
buf[pos++] = '\0';
t_buffer_alloc(pos);
debug(cfg, "%s", buf);
} T_END;
}
void debugv_not_stderr(const struct antispam_debug_config *cfg, char **args)
{
if (cfg->target == ADT_STDERR)
return;
debugv(cfg, args);
}
void debug_verbose(const struct antispam_debug_config *cfg, const char *fmt, ...)
{
va_list args;
if (!cfg->verbose)
return;
va_start(args, fmt);
_debug(cfg, fmt, args);
va_end(args);
}
int debug_init(struct antispam_debug_config *cfg,
const char *(getenv)(const char *env, void *data),
void *getenv_data)
{
const char *tmp;
tmp = getenv("DEBUG_TARGET", getenv_data);
if (tmp) {
if (strcmp(tmp, "syslog") == 0)
cfg->target = ADT_SYSLOG;
else if (strcmp(tmp, "stderr") == 0)
cfg->target = ADT_STDERR;
else
return -1;
}
cfg->prefix = getenv("DEBUG_PREFIX", getenv_data);
if (!cfg->prefix)
cfg->prefix = "antispam: ";
debug(cfg, "plugin initialising (%s)\n", ANTISPAM_VERSION);
tmp = getenv("VERBOSE_DEBUG", getenv_data);
if (tmp) {
char *endp;
unsigned long val = strtoul(tmp, &endp, 10);
if (*endp || val >= 2) {
debug(cfg, "Invalid verbose_debug setting\n");
return -1;
}
cfg->verbose = val;
debug_verbose(cfg, "verbose debug enabled\n");
}
return 0;
}
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