contrib/ipfilter/lib/save_syslog.c

   1 #include "ipf.h"
   2 #include "ipmon.h"
   3 #include <syslog.h>
   4
   5 static void *syslog_parse __P((char **));
   6 static void syslog_destroy __P((void *));
   7 static int syslog_send __P((void *, ipmon_msg_t *));
   8 static void syslog_print __P((void *));
   9
  10 typedef struct syslog_opts_s {
  11         int     facpri;
  12         int     fac;
  13         int     pri;
  14 } syslog_opts_t;
  15
  16 ipmon_saver_t syslogsaver = {
  17         "syslog",
  18         syslog_destroy,
  19         NULL,                   /* dup */
  20         NULL,                   /* match */
  21         syslog_parse,
  22         syslog_print,
  23         syslog_send
  24 };
  25
  26
  27 static void *
  28 syslog_parse(char **strings)
  29 {
  30         syslog_opts_t *ctx;
  31         char *str;
  32         char *s;
  33
  34         ctx = calloc(1, sizeof(*ctx));
  35         if (ctx == NULL)
  36                 return NULL;
  37
  38         ctx->facpri = -1;
  39
  40         if (strings[0] != NULL && strings[0][0] != '\0') {
  41                 str = strdup(*strings);
  42                 if (str != NULL && *str != '\0') {
  43                         int fac = -1, pri = -1;
  44
  45                         s = strchr(str, '.');
  46                         if (s != NULL)
  47                                 *s++ = '\0';
  48
  49                         if (*str != '\0') {
  50                                 fac = fac_findname(str);
  51                                 if (fac == -1) {
  52                                         free(str);
  53                                         free(ctx);
  54                                         return NULL;
  55                                 }
  56                         }
  57
  58                         if (s != NULL && *s != '\0') {
  59                                 pri = pri_findname(s);
  60                                 if (pri == -1) {
  61                                         free(str);
  62                                         free(ctx);
  63                                         return NULL;
  64                                 }
  65                         }
  66                         free(str);
  67
  68                         ctx->fac = fac;
  69                         ctx->pri = pri;
  70                         if (pri == -1)
  71                                 ctx->facpri = fac;
  72                         else if (fac == -1)
  73                                 ctx->facpri = pri;
  74                         else
  75                                 ctx->facpri = fac | pri;
  76                 } else {
  77                         if (str != NULL)
  78                                 free(str);
  79                         free(ctx);
  80                         ctx = NULL;
  81                 }
  82         }
  83
  84         return ctx;
  85 }
  86
  87
  88 static void
  89 syslog_print(ctx)
  90         void *ctx;
  91 {
  92         syslog_opts_t *sys = ctx;
  93
  94         if (sys->facpri == -1)
  95                 return;
  96
  97         if (sys->fac == -1) {
  98                 printf(".%s", pri_toname(sys->pri));
  99         } else if (sys->pri == -1) {
 100                 printf("%s.", fac_toname(sys->fac));
 101         } else {
 102                 printf("%s.%s", fac_toname(sys->facpri & LOG_FACMASK),
 103                        pri_toname(sys->facpri & LOG_PRIMASK));
 104         }
 105 }
 106
 107
 108 static void
 109 syslog_destroy(ctx)
 110         void *ctx;
 111 {
 112         free(ctx);
 113 }
 114
 115
 116 static int
 117 syslog_send(ctx, msg)
 118         void *ctx;
 119         ipmon_msg_t *msg;
 120 {
 121         syslog_opts_t *sys = ctx;
 122         int facpri;
 123
 124         if (sys->facpri == -1) {
 125                 facpri = msg->imm_loglevel;
 126         } else {
 127                 if (sys->pri == -1) {
 128                         facpri = sys->fac | (msg->imm_loglevel & LOG_PRIMASK);
 129                 } else if (sys->fac == -1) {
 130                         facpri = sys->pri | (msg->imm_loglevel & LOG_FACMASK);
 131                 } else {
 132                         facpri = sys->facpri;
 133                 }
 134         }
 135         syslog(facpri, "%s", msg->imm_msg);
 136         return 0;
 137 }