Add documentation references to service units and program help

NEWS.adoc

@@ -86,19 +86,26 @@ https://github.com/networkupstools/nut/milestone/11
      in certain cases against high voltage transfer, we only fixed-up one of
      them. [#1245]
 
- - development iterations of NUT should now identify with not only the semantic
-   version of a preceding release, but with git-derived information about the
-   amount of iterations that followed (if available): the three-number "semver"
-   would be seen on release snapshots, while other builds would expose the
-   added components: one with the amount of commits on the main development
-   trunk since the preceding release which are ancestors of the built code
-   base, and in case of feature development branches -- another component
-   with the amount of commits unique to this branch (which are not part of
-   the development trunk). This allows to produce more relevant (monotonously
-   growing) version identifiers for packages and similar artifacts, with more
-   meaningful upgrades via development snapshots, eventually. A copy of the
-   current version information would be embedded into "dist" archives as a
-   `VERSION_DEFAULT` file. [#1949]
+ - SEMVER, know thyself!
+   * development iterations of NUT should now identify with not only the
+     semantic version of a preceding release, but with git-derived information
+     about the amount of iterations that followed (if available):
+     the three-number "semver" would be seen on release snapshots, while
+     other builds would expose the added components: one with the amount
+     of commits on the main development trunk since the preceding release
+     which are ancestors of the built code base, and in case of feature
+     development branches -- another component with the amount of commits
+     unique to this branch (which are not part of the development trunk yet).
+     This allows to produce more relevant (monotonously growing) version
+     identifiers for packages and similar artifacts, with more meaningful
+     upgrades via development snapshots, eventually. A copy of the current
+     version information would be embedded into "dist" archives as a
+     `VERSION_DEFAULT` file, among provisions for packager tuning. [#1949]
+   * SMF manifests and systemd units now refer to man pages and their online
+     variants under `NUT_WEBSITE_BASE` dependent on codebase maturity
+     (development or release snapshot); many programs now display such
+     references in their command-line usage help, method `suggest_doc_links()`
+     was introduced for this purpose. [issue #722, PR #2733]
 
  - the `upsnotify()` common code introduced in recent NUT releases (integrating
    with service management frameworks, etc.) was a bit cryptic when it reported

clients/upsc.c

@@ -62,6 +62,8 @@ static void usage(const char *prog)
 	printf("  -h         - display this help text\n");
 
 	nut_report_config_flags();
+
+	printf("\n%s", suggest_doc_links(prog, NULL));
 }
 
 static void printvar(const char *var)

clients/upscmd.c

@@ -68,6 +68,8 @@ static void usage(const char *prog)
 	printf("  [<value>]	Additional data for command - number of seconds, etc.\n");
 
 	nut_report_config_flags();
+
+	printf("\n%s", suggest_doc_links(prog, "upsd.users"));
 }
 
 static void print_cmd(char *cmdname)

clients/upslog.c

@@ -176,11 +176,10 @@ static void help(const char *prog)
 	printf("format string defaults to:\n");
 	printf("%s\n", DEFAULT_LOGFORMAT);
 
-	printf("\n");
-	printf("See the upslog(8) man page for more information.\n");
-
 	nut_report_config_flags();
 
+	printf("\n%s", suggest_doc_links(prog, NULL));
+
 	exit(EXIT_SUCCESS);
 }
 

clients/upsmon.c

@@ -3021,6 +3021,8 @@ static void help(const char *arg_progname)
 
 	nut_report_config_flags();
 
+	printf("\n%s", suggest_doc_links(arg_progname, "upsmon.conf"));
+
 	exit(EXIT_SUCCESS);
 }
 

clients/upsrw.c

@@ -69,6 +69,8 @@ static void usage(const char *prog)
 	printf("Call without -s to show all possible read/write variables (same as -l).\n");
 
 	nut_report_config_flags();
+
+	printf("\n%s", suggest_doc_links(prog, "upsd.users"));
 }
 
 static void clean_exit(void)

clients/upssched.c

@@ -1505,6 +1505,8 @@ static void help(const char *arg_progname)
 
 	nut_report_config_flags();
 
+	printf("\n%s", suggest_doc_links(arg_progname, "upsmon.conf"));
+
 	exit(EXIT_SUCCESS);
 }
 

common/common.c

@@ -659,6 +659,45 @@ int print_banner_once(const char *prog, int even_if_disabled)
 	return ret;
 }
 
+const char *suggest_doc_links(const char *progname, const char *progconf) {
+	static char	buf[LARGEBUF];
+
+	buf[0] = '\0';
+
+	if (progname) {
+		char	*s = NULL, *buf2 = xstrdup(xbasename(progname));
+		size_t	i;
+
+		for (i = 0; buf2[i]; i++) {
+			buf2[i] = tolower(buf2[i]);
+		}
+
+		if ((s = strstr(buf2, ".exe")) && strcmp(buf2, "nut.exe"))
+			*s = '\0';
+
+		snprintf(buf, sizeof(buf),
+			"For more information please ");
+#if defined(WITH_DOCS) && WITH_DOCS
+		snprintfcat(buf, sizeof(buf),
+			"Read The Fine Manual ('man %s') and/or ",
+			buf2);
+#endif
+		snprintfcat(buf, sizeof(buf),
+			"see\n\t%s/docs/man/%s.html\n",
+			NUT_WEBSITE_BASE, buf2);
+
+		free(buf2);
+	}
+
+	if (progconf)
+		snprintfcat(buf, sizeof(buf),
+			"%s check documentation and samples of %s\n",
+			progname ? "Also" : "Please",
+			progconf);
+
+	return buf;
+}
+
 /* enable writing upslog_with_errno() and upslogx() type messages to
    the syslog */
 void syslogbit_set(void)

configure.ac

@@ -30,6 +30,16 @@ AC_INIT([nut],
 dnl See docs/maintainer-guide.txt about releases - updating the version
 dnl above is a small part of the consistent ritual!
 
+dnl PACKAGE_URL="https://www.networkupstools.org/" for development iterations
+dnl or "https://www.networkupstools.org/historic/v1.2.3/index.html" for release
+dnl snapshots further set in stone. Either way, there should be a slash and
+dnl either a filename, or nothing. Adding a bogus filename and chopping it
+dnl off by `dirname` should do the trick.
+dnl NOTE: the resulting NUT_WEBSITE_BASE string does not end with a slash!
+NUT_WEBSITE_BASE="`dirname "${PACKAGE_URL}index.html"`"
+dnl Fallback, no trailing slash!
+[ -n "${NUT_WEBSITE_BASE-}" ] || NUT_WEBSITE_BASE='https://www.networkupstools.org'
+
 dnl Note: this refers to GITREV at the time of configure script running
 dnl primarily for better messaging in the script itself (also to render
 dnl the PDF documentation revision history via docs/docinfo.xml.in).
@@ -747,6 +757,8 @@ AS_IF([test x"${NUT_SOURCE_GITREV}" = x],
         [NUT_REPORT([configured version], [${PACKAGE_VERSION} ${NUT_SOURCE_GITREV_DEVREL}])],
         [NUT_REPORT([configured version], [${PACKAGE_VERSION} (${NUT_SOURCE_GITREV}) ${NUT_SOURCE_GITREV_DEVREL}])])
     ])
+NUT_REPORT([Documentation website base URL], [${NUT_WEBSITE_BASE}])
+AC_DEFINE_UNQUOTED([NUT_WEBSITE_BASE], "${NUT_WEBSITE_BASE}", [Documentation website base URL, no trailing slash])
 
 dnl Note: the compiler/pragma/attr methods below are custom for NUT codebase:
 NUT_COMPILER_FAMILY
@@ -4832,6 +4844,7 @@ AC_SUBST(NUT_SOURCE_GITREV)
 AC_SUBST(NUT_SOURCE_GITREV_IS_RELEASE)
 AC_SUBST(NUT_SOURCE_GITREV_SEMVER)
 AC_SUBST(NUT_SOURCE_GITREV_NUMERIC)
+AC_SUBST(NUT_WEBSITE_BASE)
 AC_SUBST(LIBSSL_CFLAGS)
 AC_SUBST(LIBSSL_LIBS)
 AC_SUBST(LIBSSL_LDFLAGS_RPATH)

drivers/blazer_ser.c

@@ -106,7 +106,6 @@ ssize_t blazer_command(const char *cmd, char *buf, size_t buflen)
 
 void upsdrv_help(void)
 {
-	printf("Read The Fine Manual ('man 8 blazer_ser')\n");
 }
 
 

drivers/blazer_usb.c

@@ -579,8 +579,6 @@ void upsdrv_help(void)
 	}
 	printf("\n\n");
 #endif	/* TESTING */
-
-	printf("Read The Fine Manual ('man 8 blazer_usb')\n");
 }
 
 

drivers/main.c

@@ -130,7 +130,8 @@ static int nut_debug_level_protocol = -1;
 #ifndef DRIVERS_MAIN_WITHOUT_MAIN
 /* everything else */
 static char	*pidfn = NULL;
-static int	dump_data = 0; /* Store the update_count requested */
+static int	help_only = 0,
+		dump_data = 0; /* Store the update_count requested */
 #endif /* DRIVERS_MAIN_WITHOUT_MAIN */
 
 /* pre-declare some private methods used */
@@ -292,6 +293,8 @@ static void help_msg(void)
 	}
 
 	upsdrv_help();
+
+	printf("\n%s", suggest_doc_links(progname, "ups.conf"));
 }
 #endif /* DRIVERS_MAIN_WITHOUT_MAIN */
 
@@ -1812,7 +1815,7 @@ static void exit_cleanup(void)
 {
 	dstate_setinfo("driver.state", "cleanup.exit");
 
-	if (!dump_data) {
+	if (!dump_data && !help_only) {
 		upsnotify(NOTIFY_STATE_STOPPING, "exit_cleanup()");
 	}
 
@@ -1983,7 +1986,10 @@ int main(int argc, char **argv)
 	pid_t	oldpid = -1;
 #else
 /* FIXME: *actually* handle WIN32 builds too */
-	const char * cmd = NULL;
+	const char	*cmd = NULL;
+
+	const char	*drv_name;
+	char	*dot;
 #endif
 
 	const char optstring[] = "+a:s:kDFBd:hx:Lqr:u:g:Vi:c:"
@@ -2006,6 +2012,10 @@ int main(int argc, char **argv)
 			case 'd':
 				dump_data = atoi(optarg);
 				break;
+			case 'h':
+				/* Avoid notification at exit */
+				help_only = 1;
+				break;
 			default:
 				break;
 		}
@@ -2062,12 +2072,11 @@ int main(int argc, char **argv)
 	progname = xbasename(argv[0]);
 
 #ifdef WIN32
-	const char * drv_name;
 	drv_name = xbasename(argv[0]);
 	/* remove trailing .exe */
-	char * dot = strrchr(drv_name,'.');
-	if( dot != NULL ) {
-		if(strcasecmp(dot, ".exe") == 0 ) {
+	dot = strrchr(drv_name,'.');
+	if (dot != NULL) {
+		if (strcasecmp(dot, ".exe") == 0) {
 			progname = strdup(drv_name);
 			char * t = strrchr(progname,'.');
 			*t = 0;

drivers/nutdrv_qx.c

@@ -2921,7 +2921,7 @@ void	upsdrv_help(void)
 			printf(", ");
 		printf("%s", usbsubdriver[i].name);
 	}
-	printf("\n\n");
+	printf("\n");
 # endif	/* QX_USB*/
 
 	/* Protocols are the first token from "name" field in
@@ -2944,10 +2944,8 @@ void	upsdrv_help(void)
 			printf(", ");
 		printf("%s", subdrv_name);
 	}
-	printf("\n\n");
+	printf("\n");
 #endif	/* TESTING */
-
-	printf("Read The Fine Manual ('man 8 nutdrv_qx')\n");
 }
 
 /* Adding flags/vars */

drivers/upsdrvctl.c

@@ -1237,6 +1237,11 @@ static void help(const char *arg_progname)
 	printf("              		Fields: UPSNAME UPSDRV RUNNING PF_PID S_RESPONSIVE S_PID S_STATUS\n");
 	printf("              		(PF_* = according to PID file, if any; S_* = via socket protocol)\n");
 
+	printf("\n%s", suggest_doc_links(arg_progname, "ups.conf"));
+#if (defined(WITH_SOLARIS_SMF) && WITH_SOLARIS_SMF) || (defined(HAVE_SYSTEMD) && HAVE_SYSTEMD)
+	printf("NOTE: On this system you should prefer upsdrvsvcctl and nut-driver-enumerator\n");
+#endif
+
 	exit(EXIT_SUCCESS);
 }
 

drivers/usbhid-ups.c

@@ -1025,9 +1025,7 @@ void upsdrv_help(void)
 			printf(", ");
 		printf("\"%s\"", subdriver_list[i]->name);
 	}
-	printf("\n\n");
-
-	printf("Read The Fine Manual ('man 8 usbhid-ups')\n");
+	printf("\n");
 }
 
 void upsdrv_makevartable(void)

include/common.h

@@ -208,6 +208,13 @@ extern const char *UPS_VERSION;
  * have an end-of-line char of its own. */
 const char *describe_NUT_VERSION_once(void);
 
+/* Return a buffer with a (possibly multiline) string that can be printed
+ * as part of program help/usage message. Caller should not free() the buffer.
+ * Optional "progconf" allows to suggest config file(s) to study as well.
+ * NOTE: the string in buffer starts with text and ends with one EOL char.
+ */
+const char *suggest_doc_links(const char *progname, const char *progconf);
+
 /* Based on NUT_QUIET_INIT_BANNER envvar (present and empty or "true")
  * hide the NUT tool name+version banners; show them by default */
 int banner_is_disabled(void);

scripts/Solaris/nut-driver-enumerator.xml.in

@@ -2,14 +2,14 @@
 <!DOCTYPE service_bundle SYSTEM "/usr/share/lib/xml/dtd/service_bundle.dtd.1">
 <!--
 #
-# Copyright 2016-2018 Jim Klimov
-# Template manifest for instantiated NUT drivers
+# Copyright 2016-2024 Jim Klimov
+# NDE (nut-driver-enumerator) manages definitions of instantiated NUT drivers
 #
 -->
 
 <service_bundle type='manifest' name='nut-driver-enumerator'>
 
-	<service name='system/power/nut-driver-enumerator' type='service' version='1.2'>
+	<service name='system/power/nut-driver-enumerator' type='service' version='2'>
 
 	<!--
 	  Wait for all local and usr filesystem to be mounted - project is
@@ -162,10 +162,12 @@
 					</loctext>
 				</common_name>
 				<documentation>
-					<manpage title='upsdrvsvcctl' section='8'
-					manpath='/usr/share/man' />
-					<manpage title='ups.conf' section='5'
-					manpath='/usr/share/man' />
+					<doc_link name='upsdrvsvcctl online'	uri='@NUT_WEBSITE_BASE@/docs/man/upsdrvsvcctl.html' />
+					<manpage title='upsdrvsvcctl'		section='8' manpath='/usr/share/man' />
+					<doc_link name='ups.conf online'	uri='@NUT_WEBSITE_BASE@/docs/man/ups.conf.html' />
+					<manpage title='ups.conf'		section='5' manpath='/usr/share/man' />
+					<doc_link name='nut.conf online'	uri='@NUT_WEBSITE_BASE@/docs/man/nut.conf.html' />
+					<manpage title='nut.conf'		section='5' manpath='/usr/share/man' />
 				</documentation>
 			</template>
 		</instance>

scripts/Solaris/nut-driver.xml.in

@@ -2,14 +2,14 @@
 <!DOCTYPE service_bundle SYSTEM "/usr/share/lib/xml/dtd/service_bundle.dtd.1">
 <!--
 #
-# Copyright 2016 - 2024 Jim Klimov
+# Copyright 2016-2024 Jim Klimov
 # Template manifest for instantiated NUT drivers
 #
 -->
 
 <service_bundle type='manifest' name='nut-driver'>
 
-	<service name='system/power/nut-driver' type='service' version='4'>
+	<service name='system/power/nut-driver' type='service' version='5'>
 
 	<!--
 	  Wait for all local and usr filesystem to be mounted - project is
@@ -127,10 +127,12 @@
 				</loctext>
 			</common_name>
 			<documentation>
-				<manpage title='upsdrvctl' section='8'
-				manpath='/usr/share/man' />
-				<manpage title='ups.conf' section='5'
-				manpath='/usr/share/man' />
+				<doc_link name='upsdrvsvcctl online'	uri='@NUT_WEBSITE_BASE@/docs/man/upsdrvsvcctl.html' />
+				<manpage title='upsdrvsvcctl'		section='8' manpath='/usr/share/man' />
+				<doc_link name='ups.conf online'	uri='@NUT_WEBSITE_BASE@/docs/man/ups.conf.html' />
+				<manpage title='ups.conf'		section='5' manpath='/usr/share/man' />
+				<doc_link name='nut.conf online'	uri='@NUT_WEBSITE_BASE@/docs/man/nut.conf.html' />
+				<manpage title='nut.conf'		section='5' manpath='/usr/share/man' />
 			</documentation>
 		</template>
 	</service>