/*
- Copyright 2016, 2017 IoT.bzh
+ Copyright (C) 2016-2019 IoT.bzh
author: José Bollo <jose.bollo@iot.bzh>
#include <limits.h>
#include <json-c/json.h>
-
+
#include "verbose.h"
#include "utils-file.h"
#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
+#include "wgt-strings.h"
#if 0
#include <ctype.h>
* Returns 1 if 'text' matches the 'pattern' or else returns 0.
* When returning 1 and 'after' isn't NULL, the pointer to the
* first character after the pettern in 'text' is stored in 'after'.
- * The characters '\n' and ' ' have a special mening in the search:
- * * '\n': matches any space or tabs (including none) followed
+ * The characters '\n' and ' ' have a special meaning in the search:
+ * * '\n': matches any space or tabs (including none) followed
* either by '\n' or '\0' (end of the string)
* * ' ': matches any space or tabs but at least one.
*/
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;
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;
*write++ = *begin++;
}
}
- cont = nextcont;
}
*write = 0;
return (size_t)(write - text);
*/
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 */
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) {
desc->type = unittype_service;
name = nsrv;
}
- len = (size_t)(strchrnul(name, '\n') - name);
+ len = strcspn(name, " \t\n");
desc->name = strndup(name, len);
desc->name_length = desc->name ? len : 0;
} else {
desc->name_length = 0;
}
+ if (iswanted) {
+ len = strcspn(wanted, " \t\n");
+ 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, '%');
* 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, struct json_object *jdesc)
{
int rc, rc2;
- unsigned n;
- char *beg, *end;
- struct unitdesc *descs, *d;
-
- descs = NULL;
- n = 0;
+ char *beg, *end, *befbeg, *aftend;
+ struct unitdesc *u;
+ struct generatedesc gdesc;
+
+ gdesc.conf = conf;
+ gdesc.desc = jdesc;
+ gdesc.units = NULL;
+ gdesc.nunits = 0;
rc = rc2 = 0;
/* while there is a unit in the corpus */
- while(offset(corpus, "%begin systemd-unit\n", &beg)) {
-
- /* get the end of the unit */
- end = offset(beg, "%end systemd-unit\n", &corpus);
+ for(;;) {
+ befbeg = offset(corpus, "%begin ", &beg);
+ end = offset(corpus, "%end ", &aftend);
+ if (!befbeg) {
+ if (end) {
+ /* %end detected without %begin */
+ ERROR("unexpected %%end at end");
+ rc = rc ? :-EINVAL;
+ }
+ break;
+ }
if (!end) {
/* unterminated unit !! */
- ERROR("unterminated unit description!! %s", beg);
+ ERROR("unterminated unit description!!");
corpus = beg;
rc2 = -EINVAL;
+ } else if (end < befbeg) {
+ /* sequence %end ... %begin detected !! */
+ ERROR("unexpected %%end before %%begin");
+ corpus = aftend;
+ rc2 = -EINVAL;
} else {
- /* separate the unit from the corpus */
- *end = 0;
-
- /* allocates a descriptor for the unit */
- d = realloc(descs, (n + 1) * sizeof *descs);
- if (d == NULL)
- rc2 = -ENOMEM;
- else {
- /* creates the unit description */
- memset(&d[n], 0, sizeof *d);
- descs = d;
- rc2 = process_one_unit(beg, &descs[n]);
- if (rc2 >= 0)
- n++;
+ befbeg = offset(beg, "%begin ", NULL);
+ if (befbeg && befbeg < end) {
+ /* sequence %begin ... %begin ... %end detected !! */
+ ERROR("unexpected %%begin after %%begin");
+ corpus = beg;
+ rc2 = -EINVAL;
+ } else {
+ *end = 0;
+ corpus = aftend;
+ if (matches("systemd-unit\n", beg, &beg)) {
+ if (!matches("systemd-unit\n", aftend, &corpus)) {
+ /* end doesnt match */
+ ERROR("unmatched %%begin systemd-unit (matching end mismatch)");
+ rc2 = -EINVAL;
+ } else {
+ /* allocates a descriptor for the unit */
+ u = realloc((void*)gdesc.units, ((unsigned)gdesc.nunits + 1) * sizeof *gdesc.units);
+ if (u == NULL)
+ rc2 = -ENOMEM;
+ else {
+ /* creates the unit description */
+ gdesc.units = u;
+ u = &u[gdesc.nunits];
+ memset(u, 0, sizeof *u);
+ rc2 = process_one_unit(beg, u);
+ if (rc2 >= 0)
+ gdesc.nunits++;
+ }
+ }
+ } else {
+ ERROR("unexpected %%begin name");
+ rc2 = -EINVAL;
+ }
}
}
/* records the error if there is an error */
/* call the function that processes the units */
if (rc == 0 && process)
- rc = process(closure, descs, n);
+ rc = process(closure, &gdesc);
/* cleanup and frees */
- while(n)
- free((char *)(descs[--n].name));
- free(descs);
+ while(gdesc.nunits) {
+ free((void*)(gdesc.units[--gdesc.nunits].name));
+ free((void*)(gdesc.units[gdesc.nunits].wanted_by));
+ }
+ free((void*)gdesc.units);
return rc;
}
/*
* Clear the unit generator
*/
-void unit_generator_off()
+void unit_generator_close_template()
{
free(template);
template = NULL;
* Initialises the unit generator with the content of the file of path 'filename'.
* Returns 0 in case of success or a negative number in case of error.
*/
-int unit_generator_on(const char *filename)
+int unit_generator_open_template(const char *filename)
{
size_t size;
char *tmp;
int rc;
- unit_generator_off();
+ unit_generator_close_template();
rc = getfile(filename ? : FWK_UNIT_CONF, &template, NULL);
if (!rc) {
size = pack(template, ';');
return rc;
}
+static int add_metadata(struct json_object *jdesc, const struct unitconf *conf)
+{
+ struct json_object *targets, *targ;
+ char portstr[30], afidstr[30];
+ int port, afid, i, n;
+
+ if (json_object_object_get_ex(jdesc, string_targets, &targets)) {
+ n = json_object_array_length(targets);
+ for (i = 0 ; i < n ; i++) {
+ targ = json_object_array_get_idx(targets, i);
+ if (!conf->new_afid) {
+ afid = 0;
+ port = 0;
+ } else {
+ afid = conf->new_afid();
+ if (afid < 0)
+ return afid;
+ port = conf->base_http_ports + afid;
+ }
+ sprintf(afidstr, "%d", afid);
+ sprintf(portstr, "%d", port);
+ if (!j_add_many_strings_m(targ,
+ "#metatarget.http-port", portstr,
+ "#metatarget.afid", afidstr,
+ NULL))
+ return -1;
+ }
+ }
+
+ return j_add_many_strings_m(jdesc,
+ "#metadata.install-dir", conf->installdir,
+ "#metadata.icons-dir", conf->icondir,
+ 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'.
+ * was previously set using the function 'unit_generator_open_template'.
* The callback function 'process' is then called with the
* unit descriptors array and the expected closure.
* 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_open_template(NULL);
+ if (!rc) {
+ instance = NULL;
+ rc = apply_mustach(template, jdesc, &instance, &size);
+ if (!rc)
+ rc = process_all_units(instance, conf, process, closure, jdesc);
+ 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);
- }
- }
- return 0;
+ if (rc < 0)
+ ERROR("can't get the wants path for %s and %s", desc->name, desc->wanted_by);
+
+ return rc;
}
-static int do_uninstall_units(void *closure, const struct unitdesc descs[], unsigned count)
+static int get_wants_target(char *path, size_t pathlen, const struct unitdesc *desc)
{
- int rc;
- unsigned i;
- char path[PATH_MAX];
+ 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);
- for (i = 0 ; i < count ; i++) {
- rc = get_unit_path(path, sizeof path, &descs[i]);
- if (rc >= 0) {
- rc = unlink(path);
+ return rc;
+}
+
+static int do_uninstall_units(void *closure, const struct generatedesc *desc)
+{
+ int rc, rc2;
+ int i;
+ char path[PATH_MAX];
+ 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;
+ 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;
+ }
+ 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;
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);
}
Code Review / src / app-framework-main.git / blobdiff