Munin contributed plugins

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

extern char **environ;

int writeyes(void) {

        puts("yes");

        return 0;

}

int writeno(const char *s) {

        if(s)

                printf("no (%s)\n", s);

        else

                puts("no");

        return 1;

}

int getenvint(const char *name, int defvalue) {

        const char *value;

        value = getenv(name);

        if(value == NULL)

                return defvalue;

        return atoi(value);

}

const char *getenv_composed(const char *name1, const char *name2) {

        char **p;

        size_t len1 = strlen(name1), len2 = strlen(name2);

        for(p = environ; *p; ++p) {

                if(0 == strncmp(*p, name1, len1) &&

                                0 == strncmp(len1 + *p, name2, len2) &&

                                (*p)[len1 + len2] == '=')

                        return len1 + len2 + 1 + *p;

        }

        return NULL;

}

void print_warning(const char *name) {

        const char *p;

        p = getenv_composed(name, "_warning");

        if(p == NULL)

                p = getenv("warning");

        if(p == NULL)

                return;

        printf("%s.warning %s\n", name, p);

}

void print_critical(const char *name) {

        const char *p;

        p = getenv_composed(name, "_critical");

        if(p == NULL)

                p = getenv("critical");

        if(p == NULL)

                return;

        printf("%s.critial %s\n", name, p);

}

void print_warncrit(const char *name) {

        print_warning(name);

        print_critical(name);

}