1 files changed, 65 insertions, 47 deletions

diff --git a/lib/utils_base.c b/lib/utils_base.c
index c458cf6..f86efbe 100644
--- a/lib/utils_base.c
+++ b/lib/utils_base.c
@@ -6,21 +6,21 @@
 * Copyright (c) 2006 Monitoring Plugins Development Team
 *
 * Library of useful functions for plugins
-* 
+*
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
-* 
+*
 *
 *****************************************************************************/
 
@@ -40,7 +40,7 @@ monitoring_plugin *this_monitoring_plugin=NULL;
 unsigned int timeout_state = STATE_CRITICAL;
 unsigned int timeout_interval = DEFAULT_SOCKET_TIMEOUT;
 
-int _np_state_read_file(FILE *);
+bool _np_state_read_file(FILE *);
 
 void np_init( char *plugin_name, int argc, char **argv ) {
         if (this_monitoring_plugin==NULL) {
@@ -105,12 +105,12 @@ die (int result, const char *fmt, ...)
 
 void set_range_start (range *this, double value) {
         this->start = value;
-        this->start_infinity = FALSE;
+        this->start_infinity = false;
 }
 
 void set_range_end (range *this, double value) {
         this->end = value;
-        this->end_infinity = FALSE;
+        this->end_infinity = false;
 }
 
 range
@@ -124,9 +124,9 @@ range
 
         /* Set defaults */
         temp_range->start = 0;
-        temp_range->start_infinity = FALSE;
+        temp_range->start_infinity = false;
         temp_range->end = 0;
-        temp_range->end_infinity = TRUE;
+        temp_range->end_infinity = true;
         temp_range->alert_on = OUTSIDE;
         temp_range->text = strdup(str);
 
@@ -138,7 +138,7 @@ range
         end_str = index(str, ':');
         if (end_str != NULL) {
                 if (str[0] == '~') {
-                        temp_range->start_infinity = TRUE;
+                        temp_range->start_infinity = true;
                 } else {
                         start = strtod(str, NULL);      /* Will stop at the ':' */
                         set_range_start(temp_range, start);
@@ -152,8 +152,8 @@ range
                 set_range_end(temp_range, end);
         }
 
-        if (temp_range->start_infinity == TRUE ||
-                temp_range->end_infinity == TRUE ||
+        if (temp_range->start_infinity == true ||
+                temp_range->end_infinity == true ||
                 temp_range->start <= temp_range->end) {
                 return temp_range;
         }
@@ -223,31 +223,30 @@ void print_thresholds(const char *threshold_name, thresholds *my_threshold) {
         printf("\n");
 }
 
-/* Returns TRUE if alert should be raised based on the range */
-int
-check_range(double value, range *my_range)
+/* Returns true if alert should be raised based on the range */
+bool check_range(double value, range *my_range)
 {
-        int no = FALSE;
-        int yes = TRUE;
+        bool no = false;
+        bool yes = true;
 
         if (my_range->alert_on == INSIDE) {
-                no = TRUE;
-                yes = FALSE;
+                no = true;
+                yes = false;
         }
 
-        if (my_range->end_infinity == FALSE && my_range->start_infinity == FALSE) {
+        if (my_range->end_infinity == false && my_range->start_infinity == false) {
                 if ((my_range->start <= value) && (value <= my_range->end)) {
                         return no;
                 } else {
                         return yes;
                 }
-        } else if (my_range->start_infinity == FALSE && my_range->end_infinity == TRUE) {
+        } else if (my_range->start_infinity == false && my_range->end_infinity == true) {
                 if (my_range->start <= value) {
                         return no;
                 } else {
                         return yes;
                 }
-        } else if (my_range->start_infinity == TRUE && my_range->end_infinity == FALSE) {
+        } else if (my_range->start_infinity == true && my_range->end_infinity == false) {
                 if (value <= my_range->end) {
                         return no;
                 } else {
@@ -263,12 +262,12 @@ int
 get_status(double value, thresholds *my_thresholds)
 {
         if (my_thresholds->critical != NULL) {
-                if (check_range(value, my_thresholds->critical) == TRUE) {
+                if (check_range(value, my_thresholds->critical) == true) {
                         return STATE_CRITICAL;
                 }
         }
         if (my_thresholds->warning != NULL) {
-                if (check_range(value, my_thresholds->warning) == TRUE) {
+                if (check_range(value, my_thresholds->warning) == true) {
                         return STATE_WARNING;
                 }
         }
@@ -332,7 +331,7 @@ char *np_extract_value(const char *varlist, const char *name, char sep) {
                                 /* strip leading spaces */
                                 for (; isspace(varlist[0]); varlist++);
 
-                                if (tmp = index(varlist, sep)) {
+                                if ((tmp = index(varlist, sep))) {
                                         /* Value is delimited by a comma */
                                         if (tmp-varlist == 0) continue;
                                         value = (char *)calloc(1, tmp-varlist+1);
@@ -348,7 +347,7 @@ char *np_extract_value(const char *varlist, const char *name, char sep) {
                                 break;
                         }
                 }
-                if (tmp = index(varlist, sep)) {
+                if ((tmp = index(varlist, sep))) {
                         /* More keys, keep going... */
                         varlist = tmp + 1;
                 } else {
@@ -402,26 +401,45 @@ int mp_translate_state (char *state_text) {
  * parse of argv, so that uniqueness in parameters are reflected there.
  */
 char *_np_state_generate_key() {
-        struct sha256_ctx ctx;
         int i;
         char **argv = this_monitoring_plugin->argv;
-        unsigned char result[20];
         char keyname[41];
         char *p=NULL;
 
-        sha256_init_ctx(&ctx);
-        
+        unsigned char result[256];
+
+#ifdef USE_OPENSSL
+        /*
+         * This code path is chosen if openssl is available (which should be the most common
+         * scenario). Alternatively, the gnulib implementation/
+         *
+         */
+        EVP_MD_CTX *ctx = EVP_MD_CTX_new();
+
+        EVP_DigestInit(ctx, EVP_sha256());
+
+        for(i=0; i<this_monitoring_plugin->argc; i++) {
+                EVP_DigestUpdate(ctx, argv[i], strlen(argv[i]));
+        }
+
+        EVP_DigestFinal(ctx, result, NULL);
+#else
+
+        struct sha256_ctx ctx;
+
         for(i=0; i<this_monitoring_plugin->argc; i++) {
                 sha256_process_bytes(argv[i], strlen(argv[i]), &ctx);
         }
 
-        sha256_finish_ctx(&ctx, &result);
-        
+        sha256_finish_ctx(&ctx, result);
+#endif // FOUNDOPENSSL
+
         for (i=0; i<20; ++i) {
                 sprintf(&keyname[2*i], "%02x", result[i]);
         }
+
         keyname[40]='\0';
-        
+
         p = strdup(keyname);
         if(p==NULL) {
                 die(STATE_UNKNOWN, _("Cannot execute strdup: %s"), strerror(errno));
@@ -446,7 +464,7 @@ char* _np_state_calculate_location_prefix(){
 
         /* Do not allow passing MP_STATE_PATH in setuid plugins
          * for security reasons */
-        if (mp_suid() == FALSE) {
+        if (!mp_suid()) {
                 env_dir = getenv("MP_STATE_PATH");
                 if(env_dir && env_dir[0] != '\0')
                         return env_dir;
@@ -522,7 +540,7 @@ void np_enable_state(char *keyname, int expected_data_version) {
 state_data *np_state_read() {
         state_data *this_state_data=NULL;
         FILE *statefile;
-        int rc = FALSE;
+        bool rc = false;
 
         if(this_monitoring_plugin==NULL)
                 die(STATE_UNKNOWN, _("This requires np_init to be called"));
@@ -544,7 +562,7 @@ state_data *np_state_read() {
                 fclose(statefile);
         }
 
-        if(rc==FALSE) {
+        if(!rc) {
                 _cleanup_state_data();
         }
 
@@ -554,8 +572,8 @@ state_data *np_state_read() {
 /*
  * Read the state file
  */
-int _np_state_read_file(FILE *f) {
-        int status=FALSE;
+bool _np_state_read_file(FILE *f) {
+        bool status = false;
         size_t pos;
         char *line;
         int i;
@@ -609,7 +627,7 @@ int _np_state_read_file(FILE *f) {
                                 if(this_monitoring_plugin->state->state_data->data==NULL)
                                         die(STATE_UNKNOWN, _("Cannot execute strdup: %s"), strerror(errno));
                                 expected=STATE_DATA_END;
-                                status=TRUE;
+                                status=true;
                                 break;
                         case STATE_DATA_END:
                                 ;
@@ -621,10 +639,10 @@ int _np_state_read_file(FILE *f) {
 }
 
 /*
- * If time=NULL, use current time. Create state file, with state format 
- * version, default text. Writes version, time, and data. Avoid locking 
- * problems - use mv to write and then swap. Possible loss of state data if 
- * two things writing to same key at same time. 
+ * If time=NULL, use current time. Create state file, with state format
+ * version, default text. Writes version, time, and data. Avoid locking
+ * problems - use mv to write and then swap. Possible loss of state data if
+ * two things writing to same key at same time.
  * Will die with UNKNOWN if errors
  */
 void np_state_write_string(time_t data_time, char *data_string) {
@@ -639,7 +657,7 @@ void np_state_write_string(time_t data_time, char *data_string) {
                 time(&current_time);
         else
                 current_time=data_time;
-        
+
         /* If file doesn't currently exist, create directories */
         if(access(this_monitoring_plugin->state->_filename,F_OK)!=0) {
                 result = asprintf(&directories, "%s", this_monitoring_plugin->state->_filename);
@@ -678,15 +696,15 @@ void np_state_write_string(time_t data_time, char *data_string) {
                 np_free(temp_file);
                 die(STATE_UNKNOWN, _("Unable to open temporary state file"));
         }
-        
+
         fprintf(fp,"# NP State file\n");
         fprintf(fp,"%d\n",NP_STATE_FORMAT_VERSION);
         fprintf(fp,"%d\n",this_monitoring_plugin->state->data_version);
         fprintf(fp,"%lu\n",current_time);
         fprintf(fp,"%s\n",data_string);
-        
+
         fchmod(fd, S_IRUSR | S_IWUSR | S_IRGRP);
-        
+
         fflush(fp);
 
         result=fclose(fp);