/*
- Copyright 2015 IoT.bzh
+ Copyright 2015, 2016, 2017 IoT.bzh
+
+ author: José Bollo <jose.bollo@iot.bzh>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
#define _GNU_SOURCE
+#include <limits.h>
#include <errno.h>
-#include <syslog.h>
#include <string.h>
+#include <ctype.h>
+#include <assert.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
#include "verbose.h"
-#include "wgtpkg.h"
#include "wgt.h"
#include "wgt-info.h"
+#include "wgtpkg-files.h"
+#include "wgtpkg-workdir.h"
+#include "wgtpkg-zip.h"
+#include "wgtpkg-permissions.h"
+#include "wgtpkg-digsig.h"
+#include "wgtpkg-install.h"
+#include "secmgr-wrap.h"
+#include "utils-dir.h"
-static int check_temporary_constraints(const struct wgt_desc *desc)
+static const char permission_required[] = "required";
+static const char permission_optional[] = "optional";
+static const char feature_required_permissions[] = FWK_PREFIX "required-permission";
+static const char* exec_type_strings[] = {
+ "application/x-executable",
+ "application/vnd.agl.native"
+};
+
+static int check_defined(const void *data, const char *name)
{
- if (!desc->icons) {
- syslog(LOG_ERR, "widget has not icon defined (temporary constraints)");
- errno = EINVAL;
- return -1;
- }
- if (desc->icons->next) {
- syslog(LOG_ERR, "widget has more than one icon defined (temporary constraints)");
- errno = EINVAL;
+ if (data)
+ return 0;
+ ERROR("widget has no defined '%s' (temporary constraints)", name);
+ errno = EINVAL;
+ return -1;
+}
+
+static int check_valid_string(const char *value, const char *name)
+{
+ int pos;
+ char c;
+
+ if (check_defined(value, name))
return -1;
- }
- if (!desc->content_src) {
- syslog(LOG_ERR, "widget has not content defined (temporary constraints)");
+ pos = 0;
+ c = value[pos];
+ if (c == 0) {
+ ERROR("empty string forbidden in '%s' (temporary constraints)", name);
errno = EINVAL;
- return -1;
+ return -1;
}
- if (!desc->content_type) {
- syslog(LOG_ERR, "widget has not type for its content (temporary constraints)");
+ do {
+ if (!isalnum(c) && !strchr(".-_", c)) {
+ ERROR("forbidden char %c in '%s' -> '%s' (temporary constraints)", c, name, value);
+ errno = EINVAL;
+ return -1;
+ }
+ c = value[++pos];
+ } while(c);
+ return 0;
+}
+
+static int check_temporary_constraints(const struct wgt_desc *desc)
+{
+ int result = check_valid_string(desc->id, "id");
+ result |= check_valid_string(desc->version, "version");
+ result |= check_valid_string(desc->ver, "ver");
+ result |= check_defined(desc->icons, "icon");
+ result |= check_defined(desc->content_src, "content");
+ if (result)
+ return result;
+ if (desc->icons->next) {
+ ERROR("widget has more than one icon defined (temporary constraints)");
errno = EINVAL;
- return -1;
+ result = -1;
}
return 0;
}
-static int check_permissions(const char *name, int required)
+static int set_required_permissions(struct wgt_desc_param *params, int required)
{
- if (permission_exists(name)) {
- if (request_permission(name)) {
- debug("granted permission: %s", name);
- } else if (required) {
- syslog(LOG_ERR, "ungranted permission required: %s", name);
+ int optional;
+
+ while (params) {
+ /* check the value */
+ if (!strcmp(params->value, permission_required))
+ optional = !required;
+ else if (!strcmp(params->value, permission_optional))
+ optional = 1;
+ else {
+ ERROR("unexpected parameter value: %s found for %s", params->value, params->name);
errno = EPERM;
- return 0;
+ return -1;
+ }
+ /* set the permission */
+ if (request_permission(params->name)) {
+ DEBUG("granted permission: %s", params->name);
+ } else if (optional) {
+ INFO("optional permission ungranted: %s", params->name);
} else {
- notice("ungranted permission optional: %s", name);
+ ERROR("ungranted permission required: %s", params->name);
+ errno = EPERM;
+ return -1;
}
+ params = params->next;
}
- return 1;
+ return 0;
}
static int check_widget(const struct wgt_desc *desc)
{
int result;
const struct wgt_desc_feature *feature;
- const char *name;
result = check_temporary_constraints(desc);
feature = desc->features;
- while(feature) {
- name = feature->name;
- if (0 == strcmp(name, AGLWIDGET)) {
-
- } else {
- if (!check_permissions(feature->name, feature->required))
- result = -1;
- }
+ while(result >= 0 && feature) {
+ if (!strcmp(feature->name, feature_required_permissions))
+ result = set_required_permissions(feature->params, feature->required);
feature = feature->next;
}
return result;
}
-static int place(const char *root, const char *appid, const char *version, int force)
+static int move_widget(const char *root, const struct wgt_desc *desc, int force)
{
char newdir[PATH_MAX];
int rc;
- rc = snprintf(newdir, sizeof newdir, "%s/%s/%s", root, appid, version);
- if (rc >= sizeof newdir) {
- syslog(LOG_ERR, "path to long: %s/%s/%s", root, appid, version);
+ rc = snprintf(newdir, sizeof newdir, "%s/%s/%s", root, desc->id, desc->ver);
+ if (rc >= (int)sizeof newdir) {
+ ERROR("path too long in move_widget");
errno = EINVAL;
return -1;
}
- rc = move_workdir(newdir, 1, force);
+ return move_workdir(newdir, 1, force);
+}
+
+static int install_icon(const struct wgt_desc *desc)
+{
+ char link[PATH_MAX];
+ char target[PATH_MAX];
+ int rc;
+
+ create_directory(FWK_ICON_DIR, 0755, 1);
+ rc = snprintf(link, sizeof link, "%s/%s", FWK_ICON_DIR, desc->idaver);
+ if (rc >= (int)sizeof link) {
+ ERROR("link too long in install_icon");
+ errno = EINVAL;
+ return -1;
+ }
+
+ rc = snprintf(target, sizeof target, "%s/%s", workdir, desc->icons->src);
+ if (rc >= (int)sizeof target) {
+ ERROR("target too long in install_icon");
+ errno = EINVAL;
+ return -1;
+ }
+
+ unlink(link);
+ rc = symlink(target, link);
+ if (rc)
+ ERROR("can't create link %s -> %s", link, target);
return rc;
}
+static int install_exec_flag(const struct wgt_desc *desc)
+{
+ int i;
+
+ if (desc->content_type) {
+ i = sizeof exec_type_strings / sizeof *exec_type_strings;
+ while (i) {
+ if (!strcasecmp(desc->content_type, exec_type_strings[--i]))
+ return fchmodat(workdirfd, desc->content_src, 0755, 0);
+ }
+ }
+ return 0;
+}
+
+static int install_security(const struct wgt_desc *desc)
+{
+ char path[PATH_MAX], *head;
+ const char *icon, *perm;
+ int rc;
+ unsigned int i, n, len, lic, lf;
+ struct filedesc *f;
+
+ rc = secmgr_init(desc->id);
+ if (rc)
+ goto error;
+
+ rc = secmgr_path_public_read_only(workdir);
+ if (rc)
+ goto error2;
+
+ /* instal the files */
+ head = stpcpy(path, workdir);
+ assert(head < path + sizeof path);
+ len = (unsigned)((path + sizeof path) - head);
+ if (!len) {
+ ERROR("root path too long in install_security");
+ errno = ENAMETOOLONG;
+ goto error2;
+ }
+ len--;
+ *head++ = '/';
+ icon = desc->icons->src;
+ lic = (unsigned)strlen(icon);
+ n = file_count();
+ i = 0;
+ while(i < n) {
+ f = file_of_index(i++);
+ lf = (unsigned)strlen(f->name);
+ if (lf >= len) {
+ ERROR("path too long in install_security");
+ errno = ENAMETOOLONG;
+ goto error2;
+ }
+ strcpy(head, f->name);
+ if (lf <= lic && !memcmp(f->name, icon, lf) && (!f->name[lf] || f->name[lf] == '/'))
+ rc = secmgr_path_public_read_only(path);
+ else
+ rc = secmgr_path_read_only(path);
+ if (rc)
+ goto error2;
+ }
+
+ /* install the permissions */
+ perm = first_usable_permission();
+ while(perm) {
+ rc = secmgr_permit(perm);
+ INFO("permitting %s %s", perm, rc ? "FAILED!" : "success");
+ if (rc)
+ goto error2;
+ perm = next_usable_permission();
+ }
+
+ rc = secmgr_install();
+ return rc;
+error2:
+ secmgr_cancel();
+error:
+ return -1;
+}
+
/* install the widget of the file */
-void install_widget(const char *wgtfile, const char *root, int force)
+struct wgt_info *install_widget(const char *wgtfile, const char *root, int force)
{
struct wgt_info *ifo;
const struct wgt_desc *desc;
- notice("-- INSTALLING widget %s --", wgtfile);
+ NOTICE("-- INSTALLING widget %s to %s --", wgtfile, root);
/* workdir */
- if (make_workdir_base(root, "UNPACK", 0)) {
- syslog(LOG_ERR, "failed to create a working directory");
+ create_directory(root, 0755, 1);
+ if (make_workdir(root, "TMP", 0)) {
+ ERROR("failed to create a working directory");
goto error1;
}
if (!ifo)
goto error2;
+ reset_requested_permissions();
desc = wgt_info_desc(ifo);
if (check_widget(desc))
goto error3;
-/*
- if (check_and_place())
- goto error2;
-*/
- return;
+ if (move_widget(root, desc, force))
+ goto error3;
+
+ if (install_icon(desc))
+ goto error3;
+
+ if (install_exec_flag(desc))
+ goto error3;
+
+ if (install_security(desc))
+ goto error3;
+
+ file_reset();
+ return ifo;
error3:
wgt_info_unref(ifo);
remove_workdir();
error1:
- return;
+ file_reset();
+ return NULL;
}
Code Review / src / app-framework-main.git / blobdiff