aboutsummaryrefslogtreecommitdiffstats
path: root/framework/src/audit/audisp/audispd-config.c
diff options
context:
space:
mode:
Diffstat (limited to 'framework/src/audit/audisp/audispd-config.c')
-rw-r--r--framework/src/audit/audisp/audispd-config.c507
1 files changed, 0 insertions, 507 deletions
diff --git a/framework/src/audit/audisp/audispd-config.c b/framework/src/audit/audisp/audispd-config.c
deleted file mode 100644
index 5e1fd0ee..00000000
--- a/framework/src/audit/audisp/audispd-config.c
+++ /dev/null
@@ -1,507 +0,0 @@
-/* audispd-config.c --
- * Copyright 2007-08,2010,2014-15 Red Hat Inc., Durham, North Carolina.
- * All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Authors:
- * Steve Grubb <sgrubb@redhat.com>
- *
- */
-
-#include "config.h"
-#include <string.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <libgen.h>
-#include <ctype.h>
-#include <limits.h>
-#include "audispd-config.h"
-#include "private.h"
-
-/* Local prototypes */
-struct nv_pair
-{
- const char *name;
- const char *value;
- const char *option;
-};
-
-struct kw_pair
-{
- const char *name;
- int (*parser)(struct nv_pair *, int, daemon_conf_t *);
- int max_options;
-};
-
-struct nv_list
-{
- const char *name;
- int option;
-};
-
-static char *get_line(FILE *f, char *buf, unsigned size, int *lineno,
- const char *file);
-static int nv_split(char *buf, struct nv_pair *nv);
-static const struct kw_pair *kw_lookup(const char *val);
-static int q_depth_parser(struct nv_pair *nv, int line,
- daemon_conf_t *config);
-static int name_format_parser(struct nv_pair *nv, int line,
- daemon_conf_t *config);
-static int name_parser(struct nv_pair *nv, int line,
- daemon_conf_t *config);
-static int overflow_action_parser(struct nv_pair *nv, int line,
- daemon_conf_t *config);
-static int priority_boost_parser(struct nv_pair *nv, int line,
- daemon_conf_t *config);
-static int max_restarts_parser(struct nv_pair *nv, int line,
- daemon_conf_t *config);
-static int sanity_check(daemon_conf_t *config, const char *file);
-
-static const struct kw_pair keywords[] =
-{
- {"q_depth", q_depth_parser, 0 },
- {"name_format", name_format_parser, 0 },
- {"name", name_parser, 0 },
- {"overflow_action", overflow_action_parser, 0 },
- {"priority_boost", priority_boost_parser, 0 },
- {"max_restarts", max_restarts_parser, 0 },
- { NULL, NULL }
-};
-
-static const struct nv_list node_name_formats[] =
-{
- {"none", N_NONE },
- {"hostname", N_HOSTNAME },
- {"fqd", N_FQD },
- {"numeric", N_NUMERIC },
- {"user", N_USER },
- { NULL, 0 }
-};
-
-static const struct nv_list overflow_actions[] =
-{
- {"ignore", O_IGNORE },
- {"syslog", O_SYSLOG },
- {"suspend", O_SUSPEND },
- {"single", O_SINGLE },
- {"halt", O_HALT },
- { NULL, 0 }
-};
-
-/*
- * Set everything to its default value
-*/
-void clear_config(daemon_conf_t *config)
-{
- config->q_depth = 80;
- config->overflow_action = O_SYSLOG;
- config->priority_boost = 4;
- config->max_restarts = 10;
- config->node_name_format = N_NONE;
- config->name = NULL;
-}
-
-int load_config(daemon_conf_t *config, const char *file)
-{
- int fd, rc, mode, lineno = 1;
- struct stat st;
- FILE *f;
- char buf[160];
-
- clear_config(config);
-
- /* open the file */
- mode = O_RDONLY;
- rc = open(file, mode);
- if (rc < 0) {
- if (errno != ENOENT) {
- audit_msg(LOG_ERR, "Error opening %s (%s)", file,
- strerror(errno));
- return 1;
- }
- audit_msg(LOG_WARNING,
- "Config file %s doesn't exist, skipping", file);
- return 0;
- }
- fd = rc;
-
- /* check the file's permissions: owned by root, not world writable,
- * not symlink.
- */
- if (fstat(fd, &st) < 0) {
- audit_msg(LOG_ERR, "Error fstat'ing config file (%s)",
- strerror(errno));
- close(fd);
- return 1;
- }
- if (st.st_uid != 0) {
- audit_msg(LOG_ERR, "Error - %s isn't owned by root",
- file);
- close(fd);
- return 1;
- }
- if ((st.st_mode & S_IWOTH) == S_IWOTH) {
- audit_msg(LOG_ERR, "Error - %s is world writable",
- file);
- close(fd);
- return 1;
- }
- if (!S_ISREG(st.st_mode)) {
- audit_msg(LOG_ERR, "Error - %s is not a regular file",
- file);
- close(fd);
- return 1;
- }
-
- /* it's ok, read line by line */
- f = fdopen(fd, "rm");
- if (f == NULL) {
- audit_msg(LOG_ERR, "Error - fdopen failed (%s)",
- strerror(errno));
- close(fd);
- return 1;
- }
-
- while (get_line(f, buf, sizeof(buf), &lineno, file)) {
- // convert line into name-value pair
- const struct kw_pair *kw;
- struct nv_pair nv;
- rc = nv_split(buf, &nv);
- switch (rc) {
- case 0: // fine
- break;
- case 1: // not the right number of tokens.
- audit_msg(LOG_ERR,
- "Wrong number of arguments for line %d in %s",
- lineno, file);
- break;
- case 2: // no '=' sign
- audit_msg(LOG_ERR,
- "Missing equal sign for line %d in %s",
- lineno, file);
- break;
- default: // something else went wrong...
- audit_msg(LOG_ERR,
- "Unknown error for line %d in %s",
- lineno, file);
- break;
- }
- if (nv.name == NULL) {
- lineno++;
- continue;
- }
- if (nv.value == NULL) {
- fclose(f);
- audit_msg(LOG_ERR,
- "Not processing any more lines in %s", file);
- return 1;
- }
-
- /* identify keyword or error */
- kw = kw_lookup(nv.name);
- if (kw->name == NULL) {
- audit_msg(LOG_ERR,
- "Unknown keyword \"%s\" in line %d of %s",
- nv.name, lineno, file);
- fclose(f);
- return 1;
- }
-
- /* Check number of options */
- if (kw->max_options == 0 && nv.option != NULL) {
- audit_msg(LOG_ERR,
- "Keyword \"%s\" has invalid option "
- "\"%s\" in line %d of %s",
- nv.name, nv.option, lineno, file);
- fclose(f);
- return 1;
- }
-
- /* dispatch to keyword's local parser */
- rc = kw->parser(&nv, lineno, config);
- if (rc != 0) {
- fclose(f);
- return 1; // local parser puts message out
- }
-
- lineno++;
- }
-
- fclose(f);
- if (lineno > 1)
- return sanity_check(config, file);
- return 0;
-}
-
-static char *get_line(FILE *f, char *buf, unsigned size, int *lineno,
- const char *file)
-{
- int too_long = 0;
-
- while (fgets_unlocked(buf, size, f)) {
- /* remove newline */
- char *ptr = strchr(buf, 0x0a);
- if (ptr) {
- if (!too_long) {
- *ptr = 0;
- return buf;
- }
- // Reset and start with the next line
- too_long = 0;
- *lineno = *lineno + 1;
- } else {
- // If a line is too long skip it.
- // Only output 1 warning
- if (!too_long)
- audit_msg(LOG_ERR,
- "Skipping line %d in %s: too long",
- *lineno, file);
- too_long = 1;
- }
- }
- return NULL;
-}
-
-static int nv_split(char *buf, struct nv_pair *nv)
-{
- /* Get the name part */
- char *ptr, *saved;
-
- nv->name = NULL;
- nv->value = NULL;
- nv->option = NULL;
- ptr = strtok_r(buf, " ", &saved);
- if (ptr == NULL)
- return 0; /* If there's nothing, go to next line */
- if (ptr[0] == '#')
- return 0; /* If there's a comment, go to next line */
- nv->name = ptr;
-
- /* Check for a '=' */
- ptr = strtok_r(NULL, " ", &saved);
- if (ptr == NULL)
- return 1;
- if (strcmp(ptr, "=") != 0)
- return 2;
-
- /* get the value */
- ptr = strtok_r(NULL, " ", &saved);
- if (ptr == NULL)
- return 1;
- nv->value = ptr;
-
- /* See if there's an option */
- ptr = strtok_r(NULL, " ", &saved);
- if (ptr) {
- nv->option = ptr;
-
- /* Make sure there's nothing else */
- ptr = strtok_r(NULL, " ", &saved);
- if (ptr)
- return 1;
- }
-
- /* Everything is OK */
- return 0;
-}
-
-static const struct kw_pair *kw_lookup(const char *val)
-{
- int i = 0;
- while (keywords[i].name != NULL) {
- if (strcasecmp(keywords[i].name, val) == 0)
- break;
- i++;
- }
- return &keywords[i];
-}
-
-static int q_depth_parser(struct nv_pair *nv, int line,
- daemon_conf_t *config)
-{
- const char *ptr = nv->value;
- unsigned long i;
-
- /* check that all chars are numbers */
- for (i=0; ptr[i]; i++) {
- if (!isdigit(ptr[i])) {
- audit_msg(LOG_ERR,
- "Value %s should only be numbers - line %d",
- nv->value, line);
- return 1;
- }
- }
-
- /* convert to unsigned long */
- errno = 0;
- i = strtoul(nv->value, NULL, 10);
- if (errno) {
- audit_msg(LOG_ERR,
- "Error converting string to a number (%s) - line %d",
- strerror(errno), line);
- return 1;
- }
- if (i > 99999) {
- audit_msg(LOG_ERR, "q_depth must be 99999 or less");
- return 1;
- }
- config->q_depth = i;
- return 0;
-
-}
-
-static int name_format_parser(struct nv_pair *nv, int line,
- daemon_conf_t *config)
-{
- int i;
-
- for (i=0; node_name_formats[i].name != NULL; i++) {
- if (strcasecmp(nv->value, node_name_formats[i].name) == 0) {
- config->node_name_format = node_name_formats[i].option;
- return 0;
- }
- }
- audit_msg(LOG_ERR, "Option %s not found - line %d", nv->value, line);
- return 1;
-}
-
-static int name_parser(struct nv_pair *nv, int line,
- daemon_conf_t *config)
-{
- if (nv->value == NULL)
- config->name = NULL;
- else
- config->name = strdup(nv->value);
- return 0;
-}
-
-static int overflow_action_parser(struct nv_pair *nv, int line,
- daemon_conf_t *config)
-{
- int i;
-
- for (i=0; overflow_actions[i].name != NULL; i++) {
- if (strcasecmp(nv->value, overflow_actions[i].name) == 0) {
- config->overflow_action = overflow_actions[i].option;
- return 0;
- }
- }
- audit_msg(LOG_ERR, "Option %s not found - line %d", nv->value, line);
- return 1;
-}
-
-static int priority_boost_parser(struct nv_pair *nv, int line,
- struct daemon_conf *config)
-{
- const char *ptr = nv->value;
- unsigned long i;
-
- audit_msg(LOG_DEBUG, "priority_boost_parser called with: %s",
- nv->value);
-
- /* check that all chars are numbers */
- for (i=0; ptr[i]; i++) {
- if (!isdigit(ptr[i])) {
- audit_msg(LOG_ERR,
- "Value %s should only be numbers - line %d",
- nv->value, line);
- return 1;
- }
- }
- /* convert to unsigned int */
- errno = 0;
- i = strtoul(nv->value, NULL, 10);
- if (errno) {
- audit_msg(LOG_ERR,
- "Error converting string to a number (%s) - line %d",
- strerror(errno), line);
- return 1;
- }
- /* Check its range */
- if (i > INT_MAX) {
- audit_msg(LOG_ERR,
- "Error - converted number (%s) is too large - line %d",
- nv->value, line);
- return 1;
- }
- config->priority_boost = (unsigned int)i;
- return 0;
-}
-
-static int max_restarts_parser(struct nv_pair *nv, int line,
- struct daemon_conf *config)
-{
- const char *ptr = nv->value;
- unsigned long i;
-
- audit_msg(LOG_DEBUG, "max_restarts_parser called with: %s",
- nv->value);
-
- /* check that all chars are numbers */
- for (i=0; ptr[i]; i++) {
- if (!isdigit(ptr[i])) {
- audit_msg(LOG_ERR,
- "Value %s should only be numbers - line %d",
- nv->value, line);
- return 1;
- }
- }
- /* convert to unsigned int */
- errno = 0;
- i = strtoul(nv->value, NULL, 10);
- if (errno) {
- audit_msg(LOG_ERR,
- "Error converting string to a number (%s) - line %d",
- strerror(errno), line);
- return 1;
- }
- /* Check its range */
- if (i > INT_MAX) {
- audit_msg(LOG_ERR,
- "Error - converted number (%s) is too large - line %d",
- nv->value, line);
- return 1;
- }
- config->max_restarts = (unsigned int)i;
- return 0;
-}
-
-/*
- * This function is where we do the integrated check of the audispd config
- * options. At this point, all fields have been read. Returns 0 if no
- * problems and 1 if problems detected.
- */
-static int sanity_check(daemon_conf_t *config, const char *file)
-{
- /* Error checking */
- if (config->node_name_format == N_USER && config->name == NULL) {
- audit_msg(LOG_ERR,
- "Error - node_name_format is user supplied but none given (%s)",
- file);
- return 1;
- }
- return 0;
-}
-
-void free_config(daemon_conf_t *config)
-{
- free((void *)config->name);
-}
-