X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fwgtpkg-unit.c;h=3f2095c3ede454959819e5bec8c69972e78453db;hb=17f9cdadca63005fe075d999e49154342fdd5086;hp=93cfe6402d9db143cf5afd25541128de80708828;hpb=de02ff4734caf96658f40a9e352245f5046a183a;p=src%2Fapp-framework-main.git

diff --git a/src/wgtpkg-unit.c b/src/wgtpkg-unit.c
index 93cfe64..3f2095c 100644
--- a/src/wgtpkg-unit.c
+++ b/src/wgtpkg-unit.c
@@ -35,13 +35,10 @@
 #include "wgtpkg-mustach.h"
 #include "utils-json.h"
 #include "wgt-json.h"
+#include "utils-systemd.h"
 
 #include "wgtpkg-unit.h"
 
-#if !defined(SYSTEMD_UNITS_ROOT)
-# define SYSTEMD_UNITS_ROOT "/usr/local/lib/systemd"
-#endif
-
 #if 0
 #include <ctype.h>
 #else
@@ -119,12 +116,13 @@ static size_t pack(char *text, char purge)
 	char cont;     /* flag telling whether the line continues the previous one */
 	char nextcont; /* flag telling whether the line will continues the next one */
 
-	cont = 0;
+	nextcont = 0;
 	c = *(write = read = text);
 
 	/* iteration over lines */
 	while (c) {
 		/* computes emit, nextcont, emit and start for the current line */
+		cont = nextcont;
 		emit = nextcont = 0;
 		start = NULL;
 		begin = read;
@@ -143,7 +141,7 @@ static size_t pack(char *text, char purge)
 		if (c)
 			c = *++read;
 		/* emit the line if not empty */
-		if (emit) {
+		if (emit || (cont && !nextcont)) {
 			/* removes the blanks on the left of not continuing lines */
 			if (!cont && start)
 				begin = start;
@@ -158,7 +156,6 @@ static size_t pack(char *text, char purge)
 					*write++ = *begin++;
 			}
 		}
-		cont = nextcont;
 	}
 	*write = 0;
 	return (size_t)(write - text);
@@ -193,8 +190,8 @@ static char *offset(char *text, const char *pattern, char **args)
  */
 static int process_one_unit(char *spec, struct unitdesc *desc)
 {
-	char *nsoc, *nsrv, *name;
-	int isuser, issystem, issock, isserv;
+	char *nsoc, *nsrv, *name, *wanted;
+	int isuser, issystem, issock, isserv, iswanted;
 	size_t len;
 
 	/* finds the configuration directive of the unit */
@@ -202,6 +199,7 @@ static int process_one_unit(char *spec, struct unitdesc *desc)
 	issystem = !!offset(spec, "%systemd-unit system\n", NULL);
 	issock  = !!offset(spec, "%systemd-unit socket ", &nsoc);
 	isserv  = !!offset(spec, "%systemd-unit service ", &nsrv);
+	iswanted = !!offset(spec, "%systemd-unit wanted-by ", &wanted);
 
 	/* check the unit scope */
 	if ((isuser + issystem) == 1) {
@@ -228,6 +226,15 @@ static int process_one_unit(char *spec, struct unitdesc *desc)
 		desc->name_length = 0;
 	}
 
+	if (iswanted) {
+		len = (size_t)(strchrnul(wanted, '\n') - wanted);
+		desc->wanted_by = strndup(wanted, len);
+		desc->wanted_by_length = len;
+	} else {
+		desc->wanted_by = NULL;
+		desc->wanted_by_length = 0;
+	}
+
 	desc->content = spec;
 	desc->content_length = pack(spec, '%');
 
@@ -242,14 +249,14 @@ static int process_one_unit(char *spec, struct unitdesc *desc)
  * with its given 'closure' and the array descripbing the units.
  * Return 0 in case of success or a negative value in case of error.
  */
-static int process_all_units(char *corpus, int (*process)(void *closure, const struct unitdesc descs[], unsigned count), void *closure)
+static int process_all_units(char *corpus, const struct unitconf *conf, int (*process)(void *closure, const struct generatedesc *desc), void *closure)
 {
-	int rc, rc2;
-	unsigned n;
+	int n, rc, rc2;
 	char *beg, *end;
-	struct unitdesc *descs, *d;
+	struct unitdesc *units, *u;
+	struct generatedesc gdesc;
 
-	descs = NULL;
+	units = NULL;
 	n = 0;
 	rc = rc2 = 0;
 
@@ -268,14 +275,15 @@ static int process_all_units(char *corpus, int (*process)(void *closure, const s
 			*end = 0;
 
 			/* allocates a descriptor for the unit */
-			d = realloc(descs, (n + 1) * sizeof *descs);
-			if (d == NULL)
+			u = realloc(units, ((unsigned)n + 1) * sizeof *units);
+			if (u == NULL)
 				rc2 = -ENOMEM;
 			else {
 				/* creates the unit description */
-				memset(&d[n], 0, sizeof *d);
-				descs = d;
-				rc2 = process_one_unit(beg, &descs[n]);
+				units = u;
+				u = &u[n];
+				memset(u, 0, sizeof *u);
+				rc2 = process_one_unit(beg, u);
 				if (rc2 >= 0)
 					n++;
 			}
@@ -288,13 +296,19 @@ static int process_all_units(char *corpus, int (*process)(void *closure, const s
 	}
 
 	/* call the function that processes the units */
-	if (rc == 0 && process)
-		rc = process(closure, descs, n);
+	if (rc == 0 && process) {
+		gdesc.conf = conf;
+		gdesc.units = units;
+		gdesc.nunits = n;
+		rc = process(closure, &gdesc);
+	}
 
 	/* cleanup and frees */
-	while(n)
-		free((char *)(descs[--n].name));
-	free(descs);
+	while(n) {
+		free((char *)(units[--n].name));
+		free((char *)(units[n].wanted_by));
+	}
+	free(units);
 
 	return rc;
 }
@@ -329,8 +343,22 @@ int unit_generator_on(const char *filename)
 	return rc;
 }
 
+static int add_metadata(struct json_object *jdesc, const struct unitconf *conf)
+{
+	char portstr[30];
+
+	sprintf(portstr, "%d", conf->port);
+	return 	j_add_many_strings_m(jdesc,
+		"#metadata.install-dir", conf->installdir,
+		"#metadata.app-data-dir", "%h/app-data",
+		"#metadata.icons-dir", conf->icondir,
+		"#metadata.http-port", portstr,
+		NULL) ? 0 : -1;
+}
+
 /*
- * Applies the object 'jdesc' to the current unit generator.
+ * Applies the object 'jdesc' augmented of meta data coming
+ * from 'conf' to the current unit generator.
  * The current unit generator will be set to the default one if not unit
  * was previously set using the function 'unit_generator_on'.
  * The callback function 'process' is then called with the
@@ -338,105 +366,192 @@ int unit_generator_on(const char *filename)
  * Return what returned process in case of success or a negative
  * error code.
  */
-int unit_generator_process(struct json_object *jdesc, int (*process)(void *closure, const struct unitdesc descs[], unsigned count), void *closure)
+int unit_generator_process(struct json_object *jdesc, const struct unitconf *conf, int (*process)(void *closure, const struct generatedesc *desc), void *closure)
 {
 	int rc;
 	size_t size;
 	char *instance;
 
-	rc = template ? 0 : unit_generator_on(NULL);
-	if (!rc) {
-		instance = NULL;
-		rc = apply_mustach(template, jdesc, &instance, &size);
-		if (!rc)
-			rc = process_all_units(instance, process, closure);
-		free(instance);
+	rc = add_metadata(jdesc, conf);
+	if (rc)
+		ERROR("can't set the metadata. %m");
+	else {
+		rc = template ? 0 : unit_generator_on(NULL);
+		if (!rc) {
+			instance = NULL;
+			rc = apply_mustach(template, jdesc, &instance, &size);
+			if (!rc)
+				rc = process_all_units(instance, conf, process, closure);
+			free(instance);
+		}
 	}
 	return rc;
 }
 
 /**************** SPECIALIZED PART *****************************/
 
-
-static int get_unit_path(char *path, size_t pathlen, const struct unitdesc *desc)
+static int check_unit_desc(const struct unitdesc *desc, int tells)
 {
-	int rc;
+	if (desc->scope != unitscope_unknown && desc->type != unittype_unknown && desc->name != NULL)
+		return 0;
 
-	if (desc->scope == unitscope_unknown || desc->type == unittype_unknown || desc->name == NULL) {
+	if (tells) {
 		if (desc->scope == unitscope_unknown)
 			ERROR("unit of unknown scope");
 		if (desc->type == unittype_unknown)
 			ERROR("unit of unknown type");
 		if (desc->name == NULL)
 			ERROR("unit of unknown name");
-		errno = EINVAL;
-		rc = -1;
-	}
-	else {
-		rc = snprintf(path, pathlen, "%s/%s/%s.%s", 
-				SYSTEMD_UNITS_ROOT,
-				desc->scope == unitscope_system ? "system" : "user",
-				desc->name,
-				desc->type == unittype_socket ? "socket" : "service");
-
-		if (rc >= 0 && (size_t)rc >= pathlen) {
-			ERROR("can't set the unit name");
-			errno = EINVAL;
-			rc = -1;
-		}
 	}
+	errno = EINVAL;
+	return -1;
+}
+
+static int get_unit_path(char *path, size_t pathlen, const struct unitdesc *desc)
+{
+	int rc = systemd_get_unit_path(
+			path, pathlen, desc->scope == unitscope_user,
+			desc->name, desc->type == unittype_socket ? "socket" : "service");
+
+	if (rc < 0)
+		ERROR("can't get the unit path for %s", desc->name);
+
 	return rc;
 }
 
-static int do_install_units(void *closure, const struct unitdesc descs[], unsigned count)
+static int get_wants_path(char *path, size_t pathlen, const struct unitdesc *desc)
 {
-	int rc;
-	unsigned i;
-	char path[PATH_MAX + 1];
+	int rc = systemd_get_wants_path(
+			path, pathlen, desc->scope == unitscope_user, desc->wanted_by,
+			desc->name, desc->type == unittype_socket ? "socket" : "service");
 
-	for (i = 0 ; i < count ; i++) {
-		rc = get_unit_path(path, sizeof path, &descs[i]);
-		if (rc >= 0) {
-			rc = putfile(path, descs[i].content, descs[i].content_length);
+	if (rc < 0)
+		ERROR("can't get the wants path for %s and %s", desc->name, desc->wanted_by);
+
+	return rc;
+}
+
+static int get_wants_target(char *path, size_t pathlen, const struct unitdesc *desc)
+{
+	int rc = systemd_get_wants_target(
+			path, pathlen,
+			desc->name, desc->type == unittype_socket ? "socket" : "service");
+
+	if (rc < 0)
+		ERROR("can't get the wants target for %s", desc->name);
+
+	return rc;
+}
+
+static int do_send_reload(const struct generatedesc *desc)
+{
+	int i;
+	int reloadsys, reloadusr;
+	const struct unitdesc *u;
+
+	reloadsys = reloadusr = 0;
+	for (i = 0 ; i < desc->nunits ; i++) {
+		u = &desc->units[i];
+		if (u->wanted_by != NULL) {
+			switch (u->scope) {
+			case unitscope_user:
+				reloadusr = 1;
+				break;
+			case unitscope_system:
+				reloadsys = 1;
+				break;
+			default:
+				break;
+			}
 		}
 	}
-	return 0;
+
+	if (reloadusr)
+		reloadusr = systemd_daemon_reload(1);
+	if (reloadsys)
+		reloadsys = systemd_daemon_reload(0);
+	return reloadsys ? : reloadusr ? : 0;
 }
 
-static int do_uninstall_units(void *closure, const struct unitdesc descs[], unsigned count)
+static int do_uninstall_units(void *closure, const struct generatedesc *desc)
 {
-	int rc;
-	unsigned i;
+	int rc, rc2;
+	int i;
 	char path[PATH_MAX];
-
-	for (i = 0 ; i < count ; i++) {
-		rc = get_unit_path(path, sizeof path, &descs[i]);
-		if (rc >= 0) {
-			rc = unlink(path);
+	const struct unitdesc *u;
+
+	rc = 0;
+	for (i = 0 ; i < desc->nunits ; i++) {
+		u = &desc->units[i];
+		rc2 = check_unit_desc(u, 0);
+		if (rc2 == 0) {
+			rc2 = get_unit_path(path, sizeof path, u);
+			if (rc2 >= 0) {
+				rc2 = unlink(path);
+			}
+			if (rc2 < 0 && rc == 0)
+				rc = rc2;
+			if (u->wanted_by != NULL) {
+				rc2 = get_wants_path(path, sizeof path, u);
+				if (rc2 >= 0)
+					rc2 = unlink(path);
+			}
 		}
+		if (rc2 < 0 && rc == 0)
+			rc = rc2;
 	}
-	return 0;
+	rc2 = do_send_reload(desc);
+	if (rc2 < 0 && rc == 0)
+		rc = rc2;
+	return rc;
 }
 
-static int add_metadata(struct json_object *jdesc, const char *installdir, const char *icondir, int port)
+static int do_install_units(void *closure, const struct generatedesc *desc)
 {
-	char portstr[30];
-
-	sprintf(portstr, "%d", port);
-	return 	j_add_many_strings_m(jdesc,
-		"#metadata.install-dir", installdir,
-		"#metadata.app-data-dir", "%h/app-data",
-		"#metadata.icons-dir", icondir,
-		"#metadata.http-port", portstr,
-		NULL) ? 0 : -1;
+	int rc;
+	int i;
+	char path[PATH_MAX + 1], target[PATH_MAX + 1];
+	const struct unitdesc *u;
+
+	i = 0;
+	while (i < desc->nunits) {
+		u = &desc->units[i];
+		rc = check_unit_desc(u, 1);
+		if (!rc) {
+			rc = get_unit_path(path, sizeof path, u);
+			if (rc >= 0) {
+				rc = putfile(path, u->content, u->content_length);
+				if (rc >= 0 && u->wanted_by != NULL) {
+					rc = get_wants_path(path, sizeof path, u);
+					if (rc >= 0) {
+						rc = get_wants_target(target, sizeof target, u);
+						if (rc >= 0) {
+							unlink(path); /* TODO? check? */
+							rc = symlink(target, path);
+						}
+					}
+				}
+				i++;
+			}
+		}
+		if (rc < 0)
+			goto error;
+	}
+	rc = do_send_reload(desc);
+	if (rc < 0)
+		goto error;
+	return 0;
+error:
+	i = errno;
+	do_uninstall_units(closure, desc);
+	errno = i;
+	return rc;
 }
 
 static int do_install_uninstall(
 		struct wgt_info *ifo,
-		const char *installdir,
-		const char *icondir,
-		int port,
-		int (*doer)(void *, const struct unitdesc[], unsigned)
+		const struct unitconf *conf,
+		int (*doer)(void *, const struct generatedesc *)
 )
 {
 	int rc;
@@ -446,26 +561,19 @@ static int do_install_uninstall(
 	if (!jdesc)
 		rc = -1;
 	else {
-		rc = add_metadata(jdesc, installdir, icondir, port);
-		if (rc)
-			ERROR("can't set the metadata. %m");
-		else {
-			rc = unit_generator_process(jdesc, doer, NULL);
-			if (rc)
-				ERROR("can't install units, error %d", rc);
-		}
+		rc = unit_generator_process(jdesc, conf, doer, NULL);
 		json_object_put(jdesc);
 	}
 	return rc;
 }
 
-int unit_install(struct wgt_info *ifo, const char *installdir, const char *icondir, int port)
+int unit_install(struct wgt_info *ifo, const struct unitconf *conf)
 {
-	return do_install_uninstall(ifo, installdir, icondir, port, do_install_units);
+	return do_install_uninstall(ifo, conf, do_install_units);
 }
 
-int unit_uninstall(struct wgt_info *ifo)
+int unit_uninstall(struct wgt_info *ifo, const struct unitconf *conf)
 {
-	return do_install_uninstall(ifo, "", "", 0, do_uninstall_units);
+	return do_install_uninstall(ifo, conf, do_uninstall_units);
 }