/* =========================================================================
- logger.c is part of the utils section in the libatalk library,
- which is part of the netatalk project.
+logger.c was written by Simon Bazley (sibaz@sibaz.com)
- logger.c was written by Simon Bazley (sibaz@sibaz.com)
+I believe libatalk is released under the L/GPL licence.
+Just incase, it is, thats the licence I'm applying to this file.
+Netatalk 2001 (c)
- I believe libatalk is released under the L/GPL licence.
- Just incase, it is, thats the licence I'm applying to this file.
- Netatalk 2001 (c)
-
- ==========================================================================
-
- Logger.c is intended as an alternative to syslog for logging
-
- ========================================================================= */
+========================================================================= */
#include <stdio.h>
#include <limits.h>
#define COUNT_ARRAY(array) (sizeof((array))/sizeof((array)[0]))
/* =========================================================================
- Config
+ Config
========================================================================= */
/* Main log config container, must be globally visible */
log_config_t log_config = {
- 0, /* Initialized ? 0 = no */
- 0, /* No filelogging setup yet */
- {0}, /* processname */
- 0, /* syslog opened ? */
- logfacility_daemon, /* syslog facility to use */
- logoption_ndelay|logoption_pid, /* logging options for syslog */
- 0 /* log level for syslog */
+ 0, /* Initialized ? 0 = no */
+ 0, /* No filelogging setup yet */
+ {0}, /* processname */
+ 0, /* syslog opened ? */
+ logfacility_daemon, /* syslog facility to use */
+ logoption_ndelay|logoption_pid, /* logging options for syslog */
+ 0 /* log level for syslog */
};
/* Default log config: log nothing to files.
- 0: not set individually
- NULL: Name of file
- -1: logfiles fd
- 0: Log Level
- 0: Display options */
+ 0: not set individually
+ NULL: Name of file
+ -1: logfiles fd
+ 0: Log Level
+ 0: Display options */
#define DEFAULT_LOG_CONFIG {0, NULL, -1, 0, 0}
filelog_conf_t file_configs[logtype_end_of_list_marker] = {
DEFAULT_LOG_CONFIG, /* logtype_default */
- DEFAULT_LOG_CONFIG, /* logtype_core */
- DEFAULT_LOG_CONFIG, /* logtype_logger */
- DEFAULT_LOG_CONFIG, /* logtype_cnid */
- DEFAULT_LOG_CONFIG, /* logtype_afpd */
- DEFAULT_LOG_CONFIG, /* logtype_atalkd */
- DEFAULT_LOG_CONFIG, /* logtype_papd */
- DEFAULT_LOG_CONFIG /* logtype_uams */
+ DEFAULT_LOG_CONFIG, /* logtype_core */
+ DEFAULT_LOG_CONFIG, /* logtype_logger */
+ DEFAULT_LOG_CONFIG, /* logtype_cnid */
+ DEFAULT_LOG_CONFIG, /* logtype_afpd */
+ DEFAULT_LOG_CONFIG, /* logtype_atalkd */
+ DEFAULT_LOG_CONFIG, /* logtype_papd */
+ DEFAULT_LOG_CONFIG /* logtype_uams */
};
/* These are used by the LOG macro to store __FILE__ and __LINE__ */
static const int num_loglevel_strings = COUNT_ARRAY(arr_loglevel_strings);
/* =========================================================================
- Internal function definitions
+ Internal function definitions
========================================================================= */
-/*
+/*
* If filename == NULL its for syslog logging, otherwise its for file-logging.
* "unsetuplog" calls with loglevel == NULL.
* loglevel == NULL means:
* if logtype == default
* disable logging
- * else
+ * else
* set to default logging
*/
- /* -[un]setuplog <logtype> <loglevel> [<filename>]*/
+/* -[un]setuplog <logtype> <loglevel> [<filename>]*/
static void setuplog_internal(const char *logtype, const char *loglevel, const char *filename)
{
- int typenum, levelnum;
-
- /* Parse logtype */
- for( typenum=0; typenum < num_logtype_strings; typenum++) {
- if (strcasecmp(logtype, arr_logtype_strings[typenum]) == 0)
- break;
- }
- if (typenum >= num_logtype_strings) {
- return;
- }
-
- /* Parse loglevel */
- if (loglevel == NULL) {
- levelnum = 0;
- } else {
- for(levelnum=1; levelnum < num_loglevel_strings; levelnum++) {
- if (strcasecmp(loglevel, arr_loglevel_strings[levelnum]) == 0)
- break;
- }
- if (levelnum >= num_loglevel_strings) {
- return;
- }
- }
-
- /* is this a syslog setup or a filelog setup ? */
- if (filename == NULL) {
- /* must be syslog */
- syslog_setup(levelnum, 0,
- log_config.syslog_display_options,
- log_config.facility);
- } else {
- /* this must be a filelog */
- log_setup(filename, levelnum, typenum);
- }
-
- return;
+ int typenum, levelnum;
+
+ /* Parse logtype */
+ for( typenum=0; typenum < num_logtype_strings; typenum++) {
+ if (strcasecmp(logtype, arr_logtype_strings[typenum]) == 0)
+ break;
+ }
+ if (typenum >= num_logtype_strings) {
+ return;
+ }
+
+ /* Parse loglevel */
+ if (loglevel == NULL) {
+ levelnum = 0;
+ } else {
+ for(levelnum=1; levelnum < num_loglevel_strings; levelnum++) {
+ if (strcasecmp(loglevel, arr_loglevel_strings[levelnum]) == 0)
+ break;
+ }
+ if (levelnum >= num_loglevel_strings) {
+ return;
+ }
+ }
+
+ /* is this a syslog setup or a filelog setup ? */
+ if (filename == NULL) {
+ /* must be syslog */
+ syslog_setup(levelnum, 0,
+ log_config.syslog_display_options,
+ log_config.facility);
+ } else {
+ /* this must be a filelog */
+ log_setup(filename, levelnum, typenum);
+ }
+
+ return;
}
-static void generate_message_details(char *message_details_buffer,
- int message_details_buffer_length,
- int display_options,
- enum loglevels loglevel, enum logtypes logtype)
+static void generate_message_details(char *message_details_buffer,
+ int message_details_buffer_length,
+ int display_options,
+ enum loglevels loglevel, enum logtypes logtype)
{
char *ptr = message_details_buffer;
int templen;
templen = strlen(ptr);
len -= templen;
ptr += templen;
-
+
/* PID */
pid_t pid = getpid();
templen = snprintf(ptr, len, "[%d]", pid);
/* Source info ? */
if ( ! (display_options & logoption_nsrcinfo)) {
- char *basename = strrchr(log_src_filename, '/');
- if (basename)
- templen = snprintf(ptr, len, " {%s:%d}", basename + 1, log_src_linenumber);
- else
- templen = snprintf(ptr, len, " {%s:%d}", log_src_filename, log_src_linenumber);
- if (templen >= len)
- return;
- len -= templen;
- ptr += templen;
+ char *basename = strrchr(log_src_filename, '/');
+ if (basename)
+ templen = snprintf(ptr, len, " {%s:%d}", basename + 1, log_src_linenumber);
+ else
+ templen = snprintf(ptr, len, " {%s:%d}", log_src_filename, log_src_linenumber);
+ if (templen >= len)
+ return;
+ len -= templen;
+ ptr += templen;
}
/* Errorlevel */
if (loglevel >= (num_loglevel_chars - 1))
- templen = snprintf(ptr, len, " (D%d:", loglevel - 1);
+ templen = snprintf(ptr, len, " (D%d:", loglevel - 1);
else
- templen = snprintf(ptr, len, " (%c:", arr_loglevel_chars[loglevel]);
+ templen = snprintf(ptr, len, " (%c:", arr_loglevel_chars[loglevel]);
len -= templen;
- ptr += templen;
+ ptr += templen;
/* Errortype */
if (logtype<num_logtype_strings) {
templen = snprintf(ptr, len, "%s", arr_logtype_strings[logtype]);
- len -= templen;
- ptr += templen;
+ len -= templen;
+ ptr += templen;
}
strncat(ptr, "): ", len);
int get_syslog_equivalent(enum loglevels loglevel)
{
- switch (loglevel)
- {
- /* The question is we know how bad it is for us,
- but how should that translate in the syslogs? */
+ switch (loglevel)
+ {
+ /* The question is we know how bad it is for us,
+ but how should that translate in the syslogs? */
case 1: /* severe */
- return LOG_ERR;
+ return LOG_ERR;
case 2: /* error */
- return LOG_ERR;
+ return LOG_ERR;
case 3: /* warning */
- return LOG_WARNING;
+ return LOG_WARNING;
case 4: /* note */
- return LOG_NOTICE;
+ return LOG_NOTICE;
case 5: /* information */
- return LOG_INFO;
+ return LOG_INFO;
default: /* debug */
- return LOG_DEBUG;
- }
+ return LOG_DEBUG;
+ }
}
/* =========================================================================
- Global function definitions
+ Global function definitions
========================================================================= */
void log_init(void)
log_setup(LOGFILEPATH, log_note, logtype_default);
#else
syslog_setup(log_note, 0,
- log_config.syslog_display_options,
- log_config.facility);
+ log_config.syslog_display_options,
+ log_config.facility);
#endif
}
uid_t process_uid;
if (loglevel == 0) {
- /* Disable */
- if (file_configs[logtype].set) {
- if (file_configs[logtype].filename) {
- free(file_configs[logtype].filename);
- file_configs[logtype].filename = NULL;
- }
- close(file_configs[logtype].fd);
- file_configs[logtype].fd = -1;
- file_configs[logtype].level = 0;
- file_configs[logtype].set = 0;
-
- /* if disabling default also set all "default using" levels to 0 */
- if (logtype == logtype_default) {
- while (logtype != logtype_end_of_list_marker) {
- if ( ! (file_configs[logtype].set))
- file_configs[logtype].level = 0;
- logtype++;
- }
- }
- }
-
- return;
+ /* Disable */
+ if (file_configs[logtype].set) {
+ if (file_configs[logtype].filename) {
+ free(file_configs[logtype].filename);
+ file_configs[logtype].filename = NULL;
+ }
+ close(file_configs[logtype].fd);
+ file_configs[logtype].fd = -1;
+ file_configs[logtype].level = 0;
+ file_configs[logtype].set = 0;
+
+ /* if disabling default also set all "default using" levels to 0 */
+ if (logtype == logtype_default) {
+ while (logtype != logtype_end_of_list_marker) {
+ if ( ! (file_configs[logtype].set))
+ file_configs[logtype].level = 0;
+ logtype++;
+ }
+ }
+ }
+
+ return;
}
/* Safety check */
if (NULL == filename)
- return;
+ return;
/* Resetting existing config ? */
if (file_configs[logtype].set && file_configs[logtype].filename) {
- free(file_configs[logtype].filename);
- file_configs[logtype].filename = NULL;
- close(file_configs[logtype].fd);
- file_configs[logtype].fd = -1;
- file_configs[logtype].level = 0;
- file_configs[logtype].set = 0;
+ free(file_configs[logtype].filename);
+ file_configs[logtype].filename = NULL;
+ close(file_configs[logtype].fd);
+ file_configs[logtype].fd = -1;
+ file_configs[logtype].level = 0;
+ file_configs[logtype].set = 0;
}
/* Set new values */
/* Open log file as OPEN_LOGS_AS_UID*/
process_uid = geteuid();
if (process_uid)
- seteuid(OPEN_LOGS_AS_UID);
+ seteuid(OPEN_LOGS_AS_UID);
file_configs[logtype].fd = open( file_configs[logtype].filename,
- O_CREAT | O_WRONLY | O_APPEND,
- S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+ O_CREAT | O_WRONLY | O_APPEND,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
if (process_uid)
- seteuid(process_uid);
+ seteuid(process_uid);
/* Check for error opening/creating logfile */
if (-1 == file_configs[logtype].fd) {
- free(file_configs[logtype].filename);
- file_configs[logtype].filename = NULL;
- file_configs[logtype].level = -1;
- file_configs[logtype].set = 0;
- return;
+ free(file_configs[logtype].filename);
+ file_configs[logtype].filename = NULL;
+ file_configs[logtype].level = -1;
+ file_configs[logtype].set = 0;
+ return;
}
fcntl(file_configs[logtype].fd, F_SETFD, FD_CLOEXEC);
/* in order to make it easy and fast to check the loglevels in the LOG macro! */
if (logtype == logtype_default) {
- while (logtype != logtype_end_of_list_marker) {
- if ( ! (file_configs[logtype].set))
- file_configs[logtype].level = loglevel;
- logtype++;
- }
- logtype = logtype_default;
+ while (logtype != logtype_end_of_list_marker) {
+ if ( ! (file_configs[logtype].set))
+ file_configs[logtype].level = loglevel;
+ logtype++;
+ }
+ logtype = logtype_default;
}
LOG(log_debug, logtype_logger, "Setup file logging: type: %s, level: %s, file: %s",
- arr_logtype_strings[logtype], arr_loglevel_strings[loglevel], file_configs[logtype].filename);
+ arr_logtype_strings[logtype], arr_loglevel_strings[loglevel], file_configs[logtype].filename);
}
/* logtype is ignored, it's just one for all */
void syslog_setup(int loglevel, enum logtypes logtype _U_,
- int display_options, int facility)
+ int display_options, int facility)
{
log_config.syslog_level = loglevel;
log_config.syslog_display_options = display_options;
log_config.inited = 1;
LOG(log_note, logtype_logger, "Set syslog logging to level: %s",
- arr_loglevel_strings[loglevel]);
+ arr_loglevel_strings[loglevel]);
}
void log_close()
/* This function sets up the processname */
void set_processname(const char *processname)
{
- strncpy(log_config.processname, processname, 15);
- log_config.processname[15] = 0;
+ strncpy(log_config.processname, processname, 15);
+ log_config.processname[15] = 0;
}
/* -------------------------------------------------------------------------
- make_log_entry has 1 main flaws:
- The message in its entirity, must fit into the tempbuffer.
- So it must be shorter than MAXLOGSIZE
+ make_log_entry has 1 main flaws:
+ The message in its entirity, must fit into the tempbuffer.
+ So it must be shorter than MAXLOGSIZE
------------------------------------------------------------------------- */
-void make_log_entry(enum loglevels loglevel, enum logtypes logtype,
- char *message, ...)
+void make_log_entry(enum loglevels loglevel, enum logtypes logtype,
+ char *message, ...)
{
- /* fn is not reentrant but is used in signal handler
- * with LOGGER it's a little late source name and line number
- * are already changed. */
+ /* fn is not reentrant but is used in signal handler
+ * with LOGGER it's a little late source name and line number
+ * are already changed. */
static int inlog = 0;
int fd, len;
char temp_buffer[MAXLOGSIZE];
va_list args;
struct iovec iov[2];
- if (inlog)
- return;
- inlog = 1;
-
- /* Initialise the Messages */
- va_start(args, message);
- len = vsnprintf(temp_buffer, MAXLOGSIZE - 1, message, args);
- va_end(args);
-
- /* Append \n */
- if (len >= MAXLOGSIZE)
- /* vsnprintf hit the buffer size*/
- temp_buffer[MAXLOGSIZE-2] = '\n';
- else {
- temp_buffer[len] = '\n';
- temp_buffer[len+1] = 0;
- }
-
- generate_message_details(log_details_buffer, sizeof(log_details_buffer),
- file_configs[logtype].set ?
- file_configs[logtype].display_options :
- file_configs[logtype_default].display_options,
- loglevel, logtype);
-
- /* Check if requested logtype is setup */
- if (file_configs[logtype].set)
- /* Yes */
- fd = file_configs[logtype].fd;
- else
- /* No: use default */
- fd = file_configs[logtype_default].fd;
-
- /* If default wasnt setup its fd is -1 */
- if (fd >= 0) {
- iov[0].iov_base = log_details_buffer;
- iov[0].iov_len = strlen(log_details_buffer);
- iov[1].iov_base = temp_buffer;
- iov[1].iov_len = strlen(temp_buffer);
- writev( fd, iov, 2);
- }
-
- inlog = 0;
+ if (inlog)
+ return;
+ inlog = 1;
+
+ /* Initialise the Messages */
+ va_start(args, message);
+ len = vsnprintf(temp_buffer, MAXLOGSIZE - 1, message, args);
+ va_end(args);
+
+ /* Append \n */
+ if (len >= MAXLOGSIZE)
+ /* vsnprintf hit the buffer size*/
+ temp_buffer[MAXLOGSIZE-2] = '\n';
+ else {
+ temp_buffer[len] = '\n';
+ temp_buffer[len+1] = 0;
+ }
+
+ generate_message_details(log_details_buffer, sizeof(log_details_buffer),
+ file_configs[logtype].set ?
+ file_configs[logtype].display_options :
+ file_configs[logtype_default].display_options,
+ loglevel, logtype);
+
+ /* Check if requested logtype is setup */
+ if (file_configs[logtype].set)
+ /* Yes */
+ fd = file_configs[logtype].fd;
+ else
+ /* No: use default */
+ fd = file_configs[logtype_default].fd;
+
+ /* If default wasnt setup its fd is -1 */
+ if (fd >= 0) {
+ iov[0].iov_base = log_details_buffer;
+ iov[0].iov_len = strlen(log_details_buffer);
+ iov[1].iov_base = temp_buffer;
+ iov[1].iov_len = strlen(temp_buffer);
+ writev( fd, iov, 2);
+ }
+
+ inlog = 0;
}
/* Called by the LOG macro for syslog messages */
{
va_list args;
char log_buffer[MAXLOGSIZE];
- /* fn is not reentrant but is used in signal handler
+ /* fn is not reentrant but is used in signal handler
* with LOGGER it's a little late source name and line number
* are already changed.
*/
static int inlog = 0;
if (inlog)
- return;
+ return;
inlog = 1;
if ( ! (log_config.syslog_opened) ) {
- openlog(log_config.processname, log_config.syslog_display_options,
- log_config.facility);
- log_config.syslog_opened = 1;
+ openlog(log_config.processname, log_config.syslog_display_options,
+ log_config.facility);
+ log_config.syslog_opened = 1;
}
-
+
/* Initialise the Messages */
va_start(args, message);
vsnprintf(log_buffer, sizeof(log_buffer), message, args);
ptrbak = ptr;
/* logtype */
- logtype = ptr;
+ logtype = ptr;
/* get loglevel */
ptr = strpbrk(ptr, " \t");
while (*ptr && isspace(*ptr))
ptr++;
loglevel = ptr;
-
+
/* get filename */
ptr = strpbrk(ptr, " \t");
if (ptr) {
void unsetuplog(const char *logstr)
{
- char *str, *logtype, *filename;
+ char *str, *logtype, *filename;
- str = strdup(logstr);
+ str = strdup(logstr);
- /* logtype */
- logtype = str;
+ /* logtype */
+ logtype = str;
- /* get filename, can be NULL */
- strtok(str, " \t");
- filename = strtok(NULL, " \t");
+ /* get filename, can be NULL */
+ strtok(str, " \t");
+ filename = strtok(NULL, " \t");
- /* finally call setuplog, filename can be NULL */
- setuplog_internal(str, NULL, filename);
+ /* finally call setuplog, filename can be NULL */
+ setuplog_internal(str, NULL, filename);
- free(str);
+ free(str);
}
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