write_sensu: Re-add substitute for asprintf

asprint is only available from Solaris 10 update 11.

Fixes #1798

diff --git a/configure.ac b/configure.ac
index eaf98ec..5171dec 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -786,7 +786,7 @@ AC_HEADER_TIME
 #
 # Checks for library functions.
 #
-AC_CHECK_FUNCS(gettimeofday select strdup strtol getaddrinfo getnameinfo strchr memcpy strstr strcmp strncmp strncpy strlen strncasecmp strcasecmp openlog closelog sysconf setenv if_indextoname setlocale)
+AC_CHECK_FUNCS(gettimeofday select strdup strtol getaddrinfo getnameinfo strchr memcpy strstr strcmp strncmp strncpy strlen strncasecmp strcasecmp openlog closelog sysconf setenv if_indextoname setlocale asprintf)
 
 AC_FUNC_STRERROR_R
 

diff --git a/src/write_sensu.c b/src/write_sensu.c
index 63e9aab..b07b3bf 100644 (file)
--- a/src/write_sensu.c
+++ b/src/write_sensu.c
@@ -42,6 +42,55 @@
 #define SENSU_HOST             "localhost"
 #define SENSU_PORT             "3030"
 
+#ifdef HAVE_ASPRINTF
+#define my_asprintf asprintf
+#define my_vasprintf vasprintf
+#else
+/*
+ * asprintf() is available from Solaris 10 update 11.
+ * For older versions, use asprintf() portable implementation from
+ * https://github.com/littlstar/asprintf.c/blob/master/
+ * copyright (c) 2014 joseph werle <joseph.werle@gmail.com> under MIT license.
+ */
+
+static int my_vasprintf(char **str, const char *fmt, va_list args) {
+       int size = 0;
+       va_list tmpa;
+       // copy
+       va_copy(tmpa, args);
+       // apply variadic arguments to
+       // sprintf with format to get size
+       size = vsnprintf(NULL, size, fmt, tmpa);
+       // toss args
+       va_end(tmpa);
+       // return -1 to be compliant if
+       // size is less than 0
+       if (size < 0) { return -1; }
+       // alloc with size plus 1 for `\0'
+       *str = (char *) malloc(size + 1);
+       // return -1 to be compliant
+       // if pointer is `NULL'
+       if (NULL == *str) { return -1; }
+       // format string with original
+       // variadic arguments and set new size
+       size = vsprintf(*str, fmt, args);
+       return size;
+}
+
+static int my_asprintf(char **str, const char *fmt, ...) {
+       int size = 0;
+       va_list args;
+       // init variadic argumens
+       va_start(args, fmt);
+       // format and get size
+       size = my_vasprintf(str, fmt, args);
+       // toss args
+       va_end(args);
+       return size;
+}
+
+#endif
+
 struct str_list {
        int nb_strs;
        char **strs;
@@ -186,14 +235,14 @@ static char *build_json_str_list(const char *tag, struct str_list const *list) /
                ret_str[0] = '\0';
        }
 
-       res = asprintf(&temp_str, "\"%s\": [\"%s\"", tag, list->strs[0]);
+       res = my_asprintf(&temp_str, "\"%s\": [\"%s\"", tag, list->strs[0]);
        if (res == -1) {
                ERROR("write_sensu plugin: Unable to alloc memory");
                free(ret_str);
                return NULL;
        }
        for (int i=1; i<list->nb_strs; i++) {
-               res = asprintf(&ret_str, "%s, \"%s\"", temp_str, list->strs[i]);
+               res = my_asprintf(&ret_str, "%s, \"%s\"", temp_str, list->strs[i]);
                free(temp_str);
                if (res == -1) {
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -201,7 +250,7 @@ static char *build_json_str_list(const char *tag, struct str_list const *list) /
                }
                temp_str = ret_str;
        }
-       res = asprintf(&ret_str, "%s]", temp_str);
+       res = my_asprintf(&ret_str, "%s]", temp_str);
        free(temp_str);
        if (res == -1) {
                ERROR("write_sensu plugin: Unable to alloc memory");
@@ -303,7 +352,7 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
                }
        }
        else {
-               res = asprintf(&ret_str, "%s, %s", part1, handlers_str);
+               res = my_asprintf(&ret_str, "%s, %s", part1, handlers_str);
                free(handlers_str);
                if (res == -1) {
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -312,7 +361,7 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
        }
 
        // incorporate the plugin name information
-       res = asprintf(&temp_str, "%s, \"collectd_plugin\": \"%s\"", ret_str, vl->plugin);
+       res = my_asprintf(&temp_str, "%s, \"collectd_plugin\": \"%s\"", ret_str, vl->plugin);
        free(ret_str);
        if (res == -1) {
                ERROR("write_sensu plugin: Unable to alloc memory");
@@ -321,7 +370,7 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
        ret_str = temp_str;
 
        // incorporate the plugin type
-       res = asprintf(&temp_str, "%s, \"collectd_plugin_type\": \"%s\"", ret_str, vl->type);
+       res = my_asprintf(&temp_str, "%s, \"collectd_plugin_type\": \"%s\"", ret_str, vl->type);
        free(ret_str);
        if (res == -1) {
                ERROR("write_sensu plugin: Unable to alloc memory");
@@ -331,7 +380,7 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
 
        // incorporate the plugin instance if any
        if (vl->plugin_instance[0] != 0) {
-               res = asprintf(&temp_str, "%s, \"collectd_plugin_instance\": \"%s\"", ret_str, vl->plugin_instance);
+               res = my_asprintf(&temp_str, "%s, \"collectd_plugin_instance\": \"%s\"", ret_str, vl->plugin_instance);
                free(ret_str);
                if (res == -1) {
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -342,7 +391,7 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
 
        // incorporate the plugin type instance if any
        if (vl->type_instance[0] != 0) {
-               res = asprintf(&temp_str, "%s, \"collectd_plugin_type_instance\": \"%s\"", ret_str, vl->type_instance);
+               res = my_asprintf(&temp_str, "%s, \"collectd_plugin_type_instance\": \"%s\"", ret_str, vl->type_instance);
                free(ret_str);
                if (res == -1) {
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -355,7 +404,7 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
        if ((ds->ds[index].type != DS_TYPE_GAUGE) && (rates != NULL)) {
                char ds_type[DATA_MAX_NAME_LEN];
                ssnprintf (ds_type, sizeof (ds_type), "%s:rate", DS_TYPE_TO_STRING(ds->ds[index].type));
-               res = asprintf(&temp_str, "%s, \"collectd_data_source_type\": \"%s\"", ret_str, ds_type);
+               res = my_asprintf(&temp_str, "%s, \"collectd_data_source_type\": \"%s\"", ret_str, ds_type);
                free(ret_str);
                if (res == -1) {
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -363,7 +412,7 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
                }
                ret_str = temp_str;
        } else {
-               res = asprintf(&temp_str, "%s, \"collectd_data_source_type\": \"%s\"", ret_str, DS_TYPE_TO_STRING(ds->ds[index].type));
+               res = my_asprintf(&temp_str, "%s, \"collectd_data_source_type\": \"%s\"", ret_str, DS_TYPE_TO_STRING(ds->ds[index].type));
                free(ret_str);
                if (res == -1) {
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -373,7 +422,7 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
        }
 
        // incorporate the data source name
-       res = asprintf(&temp_str, "%s, \"collectd_data_source_name\": \"%s\"", ret_str, ds->ds[index].name);
+       res = my_asprintf(&temp_str, "%s, \"collectd_data_source_name\": \"%s\"", ret_str, ds->ds[index].name);
        free(ret_str);
        if (res == -1) {
                ERROR("write_sensu plugin: Unable to alloc memory");
@@ -385,7 +434,7 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
        {
                char ds_index[DATA_MAX_NAME_LEN];
                ssnprintf (ds_index, sizeof (ds_index), "%zu", index);
-               res = asprintf(&temp_str, "%s, \"collectd_data_source_index\": %s", ret_str, ds_index);
+               res = my_asprintf(&temp_str, "%s, \"collectd_data_source_index\": %s", ret_str, ds_index);
                free(ret_str);
                if (res == -1) {
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -396,7 +445,7 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
 
        // add key value attributes from config if any
        for (size_t i = 0; i < sensu_attrs_num; i += 2) {
-               res = asprintf(&temp_str, "%s, \"%s\": \"%s\"", ret_str, sensu_attrs[i], sensu_attrs[i+1]);
+               res = my_asprintf(&temp_str, "%s, \"%s\": \"%s\"", ret_str, sensu_attrs[i], sensu_attrs[i+1]);
                free(ret_str);
                if (res == -1) {
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -407,7 +456,7 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
 
        // incorporate sensu tags from config if any
        if ((sensu_tags != NULL) && (strlen(sensu_tags) != 0)) {
-               res = asprintf(&temp_str, "%s, %s", ret_str, sensu_tags);
+               res = my_asprintf(&temp_str, "%s, %s", ret_str, sensu_tags);
                free(ret_str);
                if (res == -1) {
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -418,14 +467,14 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
 
        // calculate the value and set to a string
        if (ds->ds[index].type == DS_TYPE_GAUGE) {
-               res = asprintf(&value_str, GAUGE_FORMAT, vl->values[index].gauge);
+               res = my_asprintf(&value_str, GAUGE_FORMAT, vl->values[index].gauge);
                if (res == -1) {
                        free(ret_str);
                        ERROR("write_sensu plugin: Unable to alloc memory");
                        return NULL;
                }
        } else if (rates != NULL) {
-               res = asprintf(&value_str, GAUGE_FORMAT, rates[index]);
+               res = my_asprintf(&value_str, GAUGE_FORMAT, rates[index]);
                if (res == -1) {
                        free(ret_str);
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -433,7 +482,7 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
                }
        } else {
                if (ds->ds[index].type == DS_TYPE_DERIVE) {
-                       res = asprintf(&value_str, "%"PRIi64, vl->values[index].derive);
+                       res = my_asprintf(&value_str, "%"PRIi64, vl->values[index].derive);
                        if (res == -1) {
                                free(ret_str);
                                ERROR("write_sensu plugin: Unable to alloc memory");
@@ -441,7 +490,7 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
                        }
                }
                else if (ds->ds[index].type == DS_TYPE_ABSOLUTE) {
-                       res = asprintf(&value_str, "%"PRIu64, vl->values[index].absolute);
+                       res = my_asprintf(&value_str, "%"PRIu64, vl->values[index].absolute);
                        if (res == -1) {
                                free(ret_str);
                                ERROR("write_sensu plugin: Unable to alloc memory");
@@ -449,7 +498,7 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
                        }
                }
                else {
-                       res = asprintf(&value_str, "%llu", vl->values[index].counter);
+                       res = my_asprintf(&value_str, "%llu", vl->values[index].counter);
                        if (res == -1) {
                                free(ret_str);
                                ERROR("write_sensu plugin: Unable to alloc memory");
@@ -481,7 +530,7 @@ static char *sensu_value_to_json(struct sensu_host const *host, /* {{{ */
        in_place_replace_sensu_name_reserved(service_buffer);
 
        // finalize the buffer by setting the output and closing curly bracket
-       res = asprintf(&temp_str, "%s, \"output\": \"%s %s %ld\"}\n", ret_str, service_buffer, value_str, CDTIME_T_TO_TIME_T(vl->time));
+       res = my_asprintf(&temp_str, "%s, \"output\": \"%s %s %ld\"}\n", ret_str, service_buffer, value_str, CDTIME_T_TO_TIME_T(vl->time));
        free(ret_str);
        free(value_str);
        if (res == -1) {
@@ -609,7 +658,7 @@ static char *sensu_notification_to_json(struct sensu_host *host, /* {{{ */
                        severity = "UNKNOWN";
                        status = 3;
        }
-       res = asprintf(&temp_str, "{\"status\": %d", status);
+       res = my_asprintf(&temp_str, "{\"status\": %d", status);
        if (res == -1) {
                ERROR("write_sensu plugin: Unable to alloc memory");
                return NULL;
@@ -617,7 +666,7 @@ static char *sensu_notification_to_json(struct sensu_host *host, /* {{{ */
        ret_str = temp_str;
 
        // incorporate the timestamp
-       res = asprintf(&temp_str, "%s, \"timestamp\": %ld", ret_str, CDTIME_T_TO_TIME_T(n->time));
+       res = my_asprintf(&temp_str, "%s, \"timestamp\": %ld", ret_str, CDTIME_T_TO_TIME_T(n->time));
        free(ret_str);
        if (res == -1) {
                ERROR("write_sensu plugin: Unable to alloc memory");
@@ -633,7 +682,7 @@ static char *sensu_notification_to_json(struct sensu_host *host, /* {{{ */
        }
        // incorporate the handlers
        if (strlen(handlers_str) != 0) {
-               res = asprintf(&temp_str, "%s, %s", ret_str, handlers_str);
+               res = my_asprintf(&temp_str, "%s, %s", ret_str, handlers_str);
                free(ret_str);
                free(handlers_str);
                if (res == -1) {
@@ -647,7 +696,7 @@ static char *sensu_notification_to_json(struct sensu_host *host, /* {{{ */
 
        // incorporate the plugin name information if any
        if (n->plugin[0] != 0) {
-               res = asprintf(&temp_str, "%s, \"collectd_plugin\": \"%s\"", ret_str, n->plugin);
+               res = my_asprintf(&temp_str, "%s, \"collectd_plugin\": \"%s\"", ret_str, n->plugin);
                free(ret_str);
                if (res == -1) {
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -658,7 +707,7 @@ static char *sensu_notification_to_json(struct sensu_host *host, /* {{{ */
 
        // incorporate the plugin type if any
        if (n->type[0] != 0) {
-               res = asprintf(&temp_str, "%s, \"collectd_plugin_type\": \"%s\"", ret_str, n->type);
+               res = my_asprintf(&temp_str, "%s, \"collectd_plugin_type\": \"%s\"", ret_str, n->type);
                free(ret_str);
                if (res == -1) {
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -669,7 +718,7 @@ static char *sensu_notification_to_json(struct sensu_host *host, /* {{{ */
 
        // incorporate the plugin instance if any
        if (n->plugin_instance[0] != 0) {
-               res = asprintf(&temp_str, "%s, \"collectd_plugin_instance\": \"%s\"", ret_str, n->plugin_instance);
+               res = my_asprintf(&temp_str, "%s, \"collectd_plugin_instance\": \"%s\"", ret_str, n->plugin_instance);
                free(ret_str);
                if (res == -1) {
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -680,7 +729,7 @@ static char *sensu_notification_to_json(struct sensu_host *host, /* {{{ */
 
        // incorporate the plugin type instance if any
        if (n->type_instance[0] != 0) {
-               res = asprintf(&temp_str, "%s, \"collectd_plugin_type_instance\": \"%s\"", ret_str, n->type_instance);
+               res = my_asprintf(&temp_str, "%s, \"collectd_plugin_type_instance\": \"%s\"", ret_str, n->type_instance);
                free(ret_str);
                if (res == -1) {
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -691,7 +740,7 @@ static char *sensu_notification_to_json(struct sensu_host *host, /* {{{ */
 
        // add key value attributes from config if any
        for (i = 0; i < sensu_attrs_num; i += 2) {
-               res = asprintf(&temp_str, "%s, \"%s\": \"%s\"", ret_str, sensu_attrs[i], sensu_attrs[i+1]);
+               res = my_asprintf(&temp_str, "%s, \"%s\": \"%s\"", ret_str, sensu_attrs[i], sensu_attrs[i+1]);
                free(ret_str);
                if (res == -1) {
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -702,7 +751,7 @@ static char *sensu_notification_to_json(struct sensu_host *host, /* {{{ */
 
        // incorporate sensu tags from config if any
        if ((sensu_tags != NULL) && (strlen(sensu_tags) != 0)) {
-               res = asprintf(&temp_str, "%s, %s", ret_str, sensu_tags);
+               res = my_asprintf(&temp_str, "%s, %s", ret_str, sensu_tags);
                free(ret_str);
                if (res == -1) {
                        ERROR("write_sensu plugin: Unable to alloc memory");
@@ -717,7 +766,7 @@ static char *sensu_notification_to_json(struct sensu_host *host, /* {{{ */
                                n->type, n->type_instance, host->separator);
        // replace sensu event name chars that are considered illegal
        in_place_replace_sensu_name_reserved(service_buffer);
-       res = asprintf(&temp_str, "%s, \"name\": \"%s\"", ret_str, &service_buffer[1]);
+       res = my_asprintf(&temp_str, "%s, \"name\": \"%s\"", ret_str, &service_buffer[1]);
        free(ret_str);
        if (res == -1) {
                ERROR("write_sensu plugin: Unable to alloc memory");
@@ -733,7 +782,7 @@ static char *sensu_notification_to_json(struct sensu_host *host, /* {{{ */
                        free(ret_str);
                        return NULL;
                }
-               res = asprintf(&temp_str, "%s, \"output\": \"%s - %s\"", ret_str, severity, msg);
+               res = my_asprintf(&temp_str, "%s, \"output\": \"%s - %s\"", ret_str, severity, msg);
                free(ret_str);
                free(msg);
                if (res == -1) {
@@ -746,7 +795,7 @@ static char *sensu_notification_to_json(struct sensu_host *host, /* {{{ */
        // Pull in values from threshold and add extra attributes
        for (notification_meta_t *meta = n->meta; meta != NULL; meta = meta->next) {
                if (strcasecmp("CurrentValue", meta->name) == 0 && meta->type == NM_TYPE_DOUBLE) {
-                       res = asprintf(&temp_str, "%s, \"current_value\": \"%.8f\"", ret_str, meta->nm_value.nm_double);
+                       res = my_asprintf(&temp_str, "%s, \"current_value\": \"%.8f\"", ret_str, meta->nm_value.nm_double);
                        free(ret_str);
                        if (res == -1) {
                                ERROR("write_sensu plugin: Unable to alloc memory");
@@ -755,7 +804,7 @@ static char *sensu_notification_to_json(struct sensu_host *host, /* {{{ */
                        ret_str = temp_str;
                }
                if (meta->type == NM_TYPE_STRING) {
-                       res = asprintf(&temp_str, "%s, \"%s\": \"%s\"", ret_str, meta->name, meta->nm_value.nm_string);
+                       res = my_asprintf(&temp_str, "%s, \"%s\": \"%s\"", ret_str, meta->name, meta->nm_value.nm_string);
                        free(ret_str);
                        if (res == -1) {
                                ERROR("write_sensu plugin: Unable to alloc memory");
@@ -766,7 +815,7 @@ static char *sensu_notification_to_json(struct sensu_host *host, /* {{{ */
        }
 
        // close the curly bracket
-       res = asprintf(&temp_str, "%s}\n", ret_str);
+       res = my_asprintf(&temp_str, "%s}\n", ret_str);
        free(ret_str);
        if (res == -1) {
                ERROR("write_sensu plugin: Unable to alloc memory");