Add install type info to -W buildinfo output. (#12010)

* Add install type info to `-W buildinfo` ouptut.

By reading it from the `.install-type` file and presenting it properly.

* Move get_value_from_key from daemon/analytics to libnetdata.

It will be used also in the buildinfo code.

* Restructure install type handling for buildinfo.

* Restructure to make code more reusable.

Allowing for deduplication and also enabling other potential callers.

* Fix incorrect variable name in analytics changes.

daemon/analytics.c

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include "common.h"
+#include "buildinfo.h"
 
 struct analytics_data analytics_data;
 extern void analytics_exporting_connectors (BUFFER *b);
@@ -359,47 +360,23 @@ void analytics_alarms_notifications(void)
     buffer_free(b);
 }
 
-char *get_value_from_key(char *buffer, char *key)
-{
-    char *s = NULL, *t = NULL;
-    s = t = buffer + strlen(key) + 2;
-    if (s) {
-        while (*s == '\'')
-            s++;
-        while (*++t != '\0');
-        while (--t > s && *t == '\'')
-            *t = '\0';
-    }
-    return s;
-}
-
-/*
- * Checks for the existence of .install_type file and reads it
- */
 void analytics_get_install_type(void)
 {
-    char *install_type_filename;
-    analytics_set_data_str(&analytics_data.netdata_install_type, "");
-    analytics_set_data_str(&analytics_data.netdata_prebuilt_distro, "");
+    struct install_type_info t = get_install_type();
 
-    int install_type_filename_len = (strlen(netdata_configured_user_config_dir) + strlen(".install-type") + 3);
-    install_type_filename = mallocz(sizeof(char) * install_type_filename_len);
-    snprintfz(install_type_filename, install_type_filename_len - 1, "%s/%s", netdata_configured_user_config_dir, ".install-type");
-
-    FILE *fp = fopen(install_type_filename, "r");
-    if (fp) {
-        char *s, buf[256 + 1];
-        size_t len = 0;
-
-        while ((s = fgets_trim_len(buf, 256, fp, &len))) {
-            if (!strncmp(buf, "INSTALL_TYPE='", 14))
-                analytics_set_data_str(&analytics_data.netdata_install_type, (char *)get_value_from_key(buf, "INSTALL_TYPE"));
-            else if (!strncmp(buf, "PREBUILT_DISTRO='", 17))
-                analytics_set_data_str(&analytics_data.netdata_prebuilt_distro, (char *)get_value_from_key(buf, "PREBUILT_DISTRO"));
-        }
-        fclose(fp);
+    if (t.install_type == NULL) {
+        analytics_set_data_str(&analytics_data.netdata_install_type, "unknown");
+    } else {
+        analytics_set_data_str(&analytics_data.netdata_install_type, t.install_type);
     }
-    freez(install_type_filename);
+
+    if (t.prebuilt_distro != NULL) {
+        analytics_set_data_str(&analytics_data.netdata_prebuilt_distro, t.prebuilt_distro);
+    }
+
+    freez(t.prebuilt_arch);
+    freez(t.prebuilt_distro);
+    freez(t.install_type);
 }
 
 /*

daemon/buildinfo.c

@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include "./config.h"
 #include "common.h"
+#include "buildinfo.h"
 
 // Optional features
 
@@ -207,9 +208,71 @@
 
 #define FEAT_YES_NO(x) ((x) ? "YES" : "NO")
 
+
+char *get_value_from_key(char *buffer, char *key) {
+    char *s = NULL, *t = NULL;
+    s = t = buffer + strlen(key) + 2;
+    if (s) {
+        while (*s == '\'')
+            s++;
+        while (*++t != '\0');
+        while (--t > s && *t == '\'')
+            *t = '\0';
+    }
+    return s;
+}
+
+struct install_type_info get_install_type() {
+    char *install_type_filename;
+    struct install_type_info ret = {.install_type = NULL, .prebuilt_arch = NULL, .prebuilt_distro = NULL};
+
+    int install_type_filename_len = (strlen(netdata_configured_user_config_dir) + strlen(".install-type") + 3);
+    install_type_filename = mallocz(sizeof(char) * install_type_filename_len);
+    snprintfz(install_type_filename, install_type_filename_len - 1, "%s/%s", netdata_configured_user_config_dir, ".install-type");
+
+    FILE *fp = fopen(install_type_filename, "r");
+    if (fp) {
+        char *s, buf[256 + 1];
+        size_t len = 0;
+
+        while ((s = fgets_trim_len(buf, 256, fp, &len))) {
+            if (!strncmp(buf, "INSTALL_TYPE='", 14))
+                ret.install_type = strdupz((char *)get_value_from_key(buf, "INSTALL_TYPE"));
+            else if (!strncmp(buf, "PREBUILT_ARCH='", 15))
+                ret.prebuilt_arch = strdupz((char *)get_value_from_key(buf, "PREBUILT_ARCH"));
+            else if (!strncmp(buf, "PREBUILT_DISTRO='", 17))
+                ret.prebuilt_distro = strdupz((char *)get_value_from_key(buf, "PREBUILT_DISTRO"));
+        }
+        fclose(fp);
+    }
+    freez(install_type_filename);
+
+    return ret;
+}
+
 void print_build_info(void) {
+    struct install_type_info t = get_install_type();
+
     printf("Configure options: %s\n", CONFIGURE_COMMAND);
 
+    if (t.install_type == NULL) {
+        printf("Install type: unknown\n");
+    } else {
+        printf("Install type: %s\n", t.install_type);
+    }
+
+    if (t.prebuilt_arch != NULL) {
+        printf("    Binary architecture: %s\n", t.prebuilt_arch);
+    }
+
+    if (t.prebuilt_distro != NULL) {
+        printf("    Packaging distro: %s\n", t.prebuilt_distro);
+    }
+
+    freez(t.install_type);
+    freez(t.prebuilt_arch);
+    freez(t.prebuilt_distro);
+
     printf("Features:\n");
     printf("    dbengine:                   %s\n", FEAT_YES_NO(FEAT_DBENGINE));
     printf("    Native HTTPS:               %s\n", FEAT_YES_NO(FEAT_NATIVE_HTTPS));
@@ -250,7 +313,6 @@ void print_build_info(void) {
     printf("    Prometheus Remote Write: %s\n", FEAT_YES_NO(FEAT_REMOTE_WRITE));
 };
 
-
 #define FEAT_JSON_BOOL(x) ((x) ? "true" : "false")
 // This intentionally does not use JSON-C so it works even if JSON-C is not present
 // This is used for anonymous statistics reporting, so it intentionally

daemon/buildinfo.h

@@ -3,8 +3,18 @@
 #ifndef NETDATA_BUILDINFO_H
 #define NETDATA_BUILDINFO_H 1
 
+struct install_type_info {
+    char *install_type;
+    char *prebuilt_arch;
+    char *prebuilt_distro;
+};
+
 extern void print_build_info(void);
 
 extern void print_build_info_json(void);
 
+extern char *get_value_from_key(char *buffer, char *key);
+
+extern struct install_type_info get_install_type();
+
 #endif // NETDATA_BUILDINFO_H