int
decode_priority( char *optarg, int *pri_max )
{
int pri_low = LOG_DEBUG;
switch (*optarg) {
case '0':
case '!':
pri_low = LOG_EMERG;
break;
case '1':
case 'a':
case 'A':
pri_low = LOG_ALERT;
break;
case '2':
case 'c':
case 'C':
pri_low = LOG_CRIT;
break;
case '3':
case 'e':
case 'E':
pri_low = LOG_ERR;
break;
case '4':
case 'w':
case 'W':
pri_low = LOG_WARNING;
break;
case '5':
case 'n':
case 'N':
pri_low = LOG_NOTICE;
break;
case '6':
case 'i':
case 'I':
pri_low = LOG_INFO;
break;
case '7':
case 'd':
case 'D':
pri_low = LOG_DEBUG;
break;
default:
fprintf(stderr, "invalid priority: %c\n",*optarg);
return -1;
}
if (pri_max && *(optarg+1)=='-') {
*pri_max = decode_priority( optarg+2, NULL );
if (*pri_max == -1) return -1;
}
return pri_low;
}
int
snmp_log_options(char *optarg, int argc, char *const *argv)
{
char *cp = optarg;
/*
* Hmmm... this doesn't seem to work.
* The main agent 'getopt' handling assumes
* that the -L option takes an argument,
* and objects if this is missing.
* Trying to differentiate between
* new-style "-Lx", and old-style "-L xx"
* is likely to be a major headache.
*/
char missing_opt = 'e'; /* old -L is new -Le */
int priority = LOG_DEBUG;
int pri_max = LOG_EMERG;
int inc_optind = 0;
netsnmp_log_handler *logh;
DEBUGMSGT(("logging:options", "optarg: '%s', argc %d, argv '%s'\n",
optarg, argc, argv ? argv[0] : "NULL"));
optarg++;
if (!*cp)
cp = &missing_opt;
/*
* Support '... -Lx=value ....' syntax
*/
if (*optarg == '=') {
optarg++;
}
/*
* and '.... "-Lx value" ....' (*with* the quotes)
*/
while (*optarg && isspace((unsigned char)(*optarg))) {
optarg++;
}
/*
* Finally, handle ".... -Lx value ...." syntax
* (*without* surrounding quotes)
*/
if ((!*optarg) && (NULL != argv)) {
/*
* We've run off the end of the argument
* so move on to the next.
* But we might not actually need it, so don't
* increment optind just yet!
*/
optarg = argv[optind];
inc_optind = 1;
}
DEBUGMSGT(("logging:options", "*cp: '%c'\n", *cp));
switch (*cp) {
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_STDIO
/*
* Log to Standard Error
*/
case 'E':
priority = decode_priority( &optarg, &pri_max );
if (priority == -1) return -1;
if (inc_optind)
optind++;
/* Fallthrough */
case 'e':
logh = netsnmp_register_stdio_loghandler(0, priority, pri_max, "stderr");
break;
/*
* Log to Standard Output
*/
case 'O':
priority = decode_priority( &optarg, &pri_max );
if (priority == -1) return -1;
if (inc_optind)
optind++;
/* Fallthrough */
case 'o':
logh = netsnmp_register_stdio_loghandler( 1, priority, pri_max, "stdout" );
break;
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_STDIO */
/*
* Log to a named file
*/
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_FILE
case 'F':
priority = decode_priority( &optarg, &pri_max );
if (priority == -1) return -1;
while (*optarg == ' ') optarg++;
if (!*optarg && !argv) return -1;
else if (!*optarg) optarg = argv[++optind];
/* FALL THROUGH */
case 'f':
if (inc_optind)
optind++;
if (!optarg) {
fprintf(stderr, "Missing log file\n");
return -1;
}
DEBUGMSGTL(("logging:options", "%d-%d: '%s'\n", priority, pri_max, optarg));
logh = netsnmp_register_filelog_handler(optarg, priority, pri_max,
-1);
break;
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_FILE */
#ifndef NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG
/*
* Log to syslog
*/
case 'S':
priority = decode_priority( &optarg, &pri_max );
if (priority == -1 || !argv) return -1;
if (!optarg[0]) {
/* The command line argument with priority does not contain log
* facility. The facility must be in next argument then. */
optind++;
if (optind < argc)
optarg = argv[optind];
}
/* Fallthrough */
case 's':
if (inc_optind)
optind++;
if (!optarg) {
fprintf(stderr, "Missing syslog facility\n");
return -1;
}
logh = netsnmp_register_loghandler(NETSNMP_LOGHANDLER_SYSLOG, priority);
if (logh) {
int facility = decode_facility(optarg);
if (facility == -1) {
netsnmp_remove_loghandler(logh);
return -1;
}
logh->pri_max = pri_max;
logh->token = strdup(snmp_log_syslogname(NULL));
logh->magic = (void *)(intptr_t)facility;
snmp_enable_syslog_ident(snmp_log_syslogname(NULL), facility);
}
break;
#endif /* NETSNMP_FEATURE_REMOVE_LOGGING_SYSLOG */
/*
* Don't log
*/
case 'N':
priority = decode_priority( &optarg, &pri_max );
if (priority == -1) return -1;
if (inc_optind)
optind++;
/* Fallthrough */
case 'n':
/*
* disable all logs to clean them up (close files, etc),
* remove all log handlers, then register a null handler.
*/
snmp_disable_log();
while(NULL != logh_head)
netsnmp_remove_loghandler( logh_head );
logh = netsnmp_register_loghandler(NETSNMP_LOGHANDLER_NONE, priority);
if (logh) {
logh->pri_max = pri_max;
}
break;
default:
fprintf(stderr, "Unknown logging option passed to -L: %c.\n", *cp);
return -1;
}
return 0;
}
/*
* Decodes log priority.
* @param optarg - IN - priority to decode, "0" or "0-7"
* OUT - points to last character after the decoded priority
* @param pri_max - OUT - maximum priority (i.e. 0x7 from "0-7")
*/
static int
decode_priority( char **optarg, int *pri_max )
{
int pri_low = LOG_DEBUG;
if (*optarg == NULL)
return -1;
switch (**optarg) {
case '0':
case '!':
pri_low = LOG_EMERG;
break;
case '1':
case 'a':
case 'A':
pri_low = LOG_ALERT;
break;
case '2':
case 'c':
case 'C':
pri_low = LOG_CRIT;
break;
case '3':
case 'e':
case 'E':
pri_low = LOG_ERR;
break;
case '4':
case 'w':
case 'W':
pri_low = LOG_WARNING;
break;
case '5':
case 'n':
case 'N':
pri_low = LOG_NOTICE;
break;
case '6':
case 'i':
case 'I':
pri_low = LOG_INFO;
break;
case '7':
case 'd':
case 'D':
pri_low = LOG_DEBUG;
break;
default:
fprintf(stderr, "invalid priority: %c\n",**optarg);
return -1;
}
*optarg = *optarg+1;
if (pri_max && **optarg=='-') {
*optarg = *optarg + 1; /* skip '-' */
*pri_max = decode_priority( optarg, NULL );
if (*pri_max == -1) return -1;
if (pri_low < *pri_max) {
int tmp = pri_low;
pri_low = *pri_max;
*pri_max = tmp;
}
}
return pri_low;
}
int
snmp_log_options(char *optarg, int argc, char *const *argv)
{
char *cp = optarg;
/*
* Hmmm... this doesn't seem to work.
* The main agent 'getopt' handling assumes
* that the -L option takes an argument,
* and objects if this is missing.
* Trying to differentiate between
* new-style "-Lx", and old-style "-L xx"
* is likely to be a major headache.
*/
char missing_opt = 'e'; /* old -L is new -Le */
int priority = LOG_DEBUG;
int pri_max = LOG_EMERG;
int inc_optind = 0;
netsnmp_log_handler *logh;
optarg++;
if (!*cp)
cp = &missing_opt;
/*
* Support '... -Lx=value ....' syntax
*/
if (*optarg == '=') {
optarg++;
}
/*
* and '.... "-Lx value" ....' (*with* the quotes)
*/
while (*optarg && isspace(*optarg)) {
optarg++;
}
/*
* Finally, handle ".... -Lx value ...." syntax
* (*without* surrounding quotes)
*/
if ((!*optarg) && (NULL != argv)) {
/*
* We've run off the end of the argument
* so move on to the next.
* But we might not actually need it, so don't
* increment optind just yet!
*/
optarg = argv[optind];
inc_optind = 1;
}
switch (*cp) {
/*
* Log to Standard Error
*/
case 'E':
priority = decode_priority( &optarg, &pri_max );
if (priority == -1) return -1;
if (inc_optind)
optind++;
/* Fallthrough */
case 'e':
logh = netsnmp_register_loghandler(NETSNMP_LOGHANDLER_STDERR, priority);
if (logh) {
logh->pri_max = pri_max;
logh->token = strdup("stderr");
}
break;
/*
* Log to Standard Output
*/
case 'O':
priority = decode_priority( &optarg, &pri_max );
if (priority == -1) return -1;
if (inc_optind)
optind++;
/* Fallthrough */
case 'o':
logh = netsnmp_register_loghandler(NETSNMP_LOGHANDLER_STDERR, priority);
if (logh) {
logh->pri_max = pri_max;
logh->token = strdup("stdout");
logh->imagic = 1; /* stdout, not stderr */
}
break;
/*
* Log to a named file
*/
case 'F':
priority = decode_priority( &optarg, &pri_max );
if (priority == -1 || !argv) return -1;
optarg = argv[++optind];
/* Fallthrough */
case 'f':
if (inc_optind)
optind++;
if (!optarg) {
fprintf(stderr, "Missing log file\n");
return -1;
}
logh = netsnmp_register_loghandler(NETSNMP_LOGHANDLER_FILE, priority);
if (logh) {
logh->pri_max = pri_max;
logh->token = strdup(optarg);
netsnmp_enable_filelog(logh,
netsnmp_ds_get_boolean(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_APPEND_LOGFILES));
}
break;
/*
* Log to syslog
*/
case 'S':
priority = decode_priority( &optarg, &pri_max );
if (priority == -1 || !argv) return -1;
if (!optarg[0]) {
/* The command line argument with priority does not contain log
* facility. The facility must be in next argument then. */
optind++;
if (optind < argc)
optarg = argv[optind];
}
/* Fallthrough */
case 's':
if (inc_optind)
optind++;
if (!optarg) {
fprintf(stderr, "Missing syslog facility\n");
return -1;
}
logh = netsnmp_register_loghandler(NETSNMP_LOGHANDLER_SYSLOG, priority);
if (logh) {
int facility = decode_facility(optarg);
if (facility == -1) return -1;
logh->pri_max = pri_max;
logh->token = strdup(snmp_log_syslogname(0));
logh->magic = (void *)(intptr_t)facility;
snmp_enable_syslog_ident(snmp_log_syslogname(0), facility);
}
break;
/*
* Don't log
*/
case 'N':
priority = decode_priority( &optarg, &pri_max );
if (priority == -1) return -1;
if (inc_optind)
optind++;
/* Fallthrough */
case 'n':
/*
* disable all logs to clean them up (close files, etc),
* remove all log handlers, then register a null handler.
*/
snmp_disable_log();
while(NULL != logh_head)
netsnmp_remove_loghandler( logh_head );
logh = netsnmp_register_loghandler(NETSNMP_LOGHANDLER_NONE, priority);
if (logh) {
logh->pri_max = pri_max;
}
break;
default:
fprintf(stderr, "Unknown logging option passed to -L: %c.\n", *cp);
return -1;
}
return 0;
}
