Refactor ALLOW_NO_SIGNATURE compile flag
[src/app-framework-main.git] / src / wgtpkg-install.c
index 27dcb87..c7de1f8 100644 (file)
@@ -1,5 +1,5 @@
 /*
- Copyright (C) 2015-2018 IoT.bzh
+ Copyright (C) 2015-2020 IoT.bzh
 
  author: José Bollo <jose.bollo@iot.bzh>
 
@@ -40,6 +40,7 @@
 #include "wgtpkg-permissions.h"
 #include "wgtpkg-digsig.h"
 #include "wgtpkg-install.h"
+#include "wgtpkg-uninstall.h"
 #include "secmgr-wrap.h"
 #include "utils-dir.h"
 #include "wgtpkg-unit.h"
@@ -52,7 +53,25 @@ static const char* exec_type_strings[] = {
 };
 
 static const char key_afm_prefix[] = "X-AFM-";
-static const char key_http_port[] = "http-port";
+static const char key_afid[] = "ID";
+
+#define HTTP_PORT_BASE         30000
+
+#define AFID_MIN               1
+#define AFID_MAX               1999
+#define AFID_IS_VALID(afid)    (AFID_MIN <= (afid) && (afid) <= AFID_MAX)
+#define AFID_COUNT             (AFID_MAX - AFID_MIN + 1)
+#define AFID_ACNT              ((AFID_COUNT + 31) >> 5)
+#define AFID_ASFT(afid)                (((afid) - AFID_MIN) & 31)
+#define AFID_AIDX(afid)                (((afid) - AFID_MIN) >> 5)
+#define AFID_TEST(array,afid)  ((((array)[AFID_AIDX(afid)]) >> AFID_ASFT(afid)) & 1)
+#define AFID_SET(array,afid)   (((array)[AFID_AIDX(afid)]) |= (((uint32_t)1) << AFID_ASFT(afid)))
+
+static uint32_t *afids_array = NULL;
+
+static const char *default_permissions[] = {
+       "urn:AGL:token:valid"
+};
 
 /*
  * normalize unit files: remove comments, remove heading blanks,
@@ -86,7 +105,7 @@ static void normalize_unit_file(char *content)
        *write = c;
 }
 
-static int get_port_cb(void *closure, const char *name, const char *path, int isuser)
+static int get_afid_cb(void *closure, const char *name, const char *path, int isuser)
 {
        char *iter;
        char *content;
@@ -107,15 +126,15 @@ static int get_port_cb(void *closure, const char *name, const char *path, int is
                iter += sizeof key_afm_prefix - 1;
                if (*iter == '-')
                        iter++;
-               if (!strncmp(iter, key_http_port, sizeof key_http_port - 1)) {
-                       iter += sizeof key_http_port - 1;
+               if (!strncmp(iter, key_afid, sizeof key_afid - 1)) {
+                       iter += sizeof key_afid - 1;
                        while(*iter && *iter != '=' && *iter != '\n')
                                iter++;
                        if (*iter == '=') {
                                while(*++iter == ' ');
                                p = atoi(iter);
-                               if (p >= 0 && p < 32768)
-                                       ((uint32_t*)closure)[p >> 5] |= (uint32_t)1 << (p & 31);
+                               if (AFID_IS_VALID(p))
+                                       AFID_SET((uint32_t*)closure, p);
                        }
                }
                iter = strstr(iter, key_afm_prefix);
@@ -124,29 +143,61 @@ static int get_port_cb(void *closure, const char *name, const char *path, int is
        return 0;
 }
 
-static int get_port()
+static int update_afids(uint32_t *afids)
 {
        int rc;
-       uint32_t ports[1024]; /* 1024 * 32 = 32768 */
-
-       memset(ports, 0, sizeof ports);
-       rc = systemd_unit_list(0, get_port_cb, &ports);
-       if (rc >= 0) {
-               rc = systemd_unit_list(1, get_port_cb, ports);
-               if (rc >= 0) {
-                       for (rc = 1024 ; rc < 32768 && !~ports[rc >> 5] ; rc += 32);
-                       if (rc == 32768) {
-                               ERROR("Can't compute a valid port");
-                               errno = EADDRNOTAVAIL;
-                               rc = -1;
-                       } else {
-                               while (1 & (ports[rc >> 5] >> (rc & 31))) rc++;
-                       }
-               }
-       }
+
+       memset(afids, 0, AFID_ACNT * sizeof(uint32_t));
+       rc = systemd_unit_list(0, get_afid_cb, afids);
+       if (rc >= 0)
+               rc = systemd_unit_list(1, get_afid_cb, afids);
+       if (rc < 0)
+               ERROR("troubles while updating afids");
        return rc;
 }
 
+static int first_free_afid(uint32_t *afids)
+{
+       int afid;
+
+       afid = AFID_MIN;
+       while (afid <= AFID_MAX && !~afids[AFID_AIDX(afid)])
+               afid += 32;
+       while (afid <= AFID_MAX && AFID_TEST(afids, afid))
+               afid++;
+       if (afid > AFID_MAX) {
+               ERROR("Can't compute a valid afid");
+               errno = EADDRNOTAVAIL;
+               afid = -1;
+       }
+       return afid;
+}
+
+static int get_new_afid()
+{
+       int afid;
+
+       /* ensure existing afid bitmap */
+       if (afids_array == NULL) {
+               afids_array = malloc(AFID_ACNT * sizeof(uint32_t));
+               if (afids_array == NULL || update_afids(afids_array) < 0)
+                       return -1;
+       }
+
+       /* allocates the afid */
+       afid = first_free_afid(afids_array);
+       if (afid < 0 && errno == EADDRNOTAVAIL) {
+               /* no more ids, try to rescan */
+               memset(afids_array, 0, AFID_ACNT * sizeof(uint32_t));
+               if (update_afids(afids_array) >= 0)
+                       afid = first_free_afid(afids_array);
+       }
+       if (afid >= 0)
+               AFID_SET(afids_array, afid);
+
+       return afid;
+}
+
 static int check_defined(const void *data, const char *name)
 {
        if (data)
@@ -261,7 +312,7 @@ static int for_all_content(const struct wgt_desc *desc, int (*action)(const char
        rc = action(desc->content_src, desc->content_type);
        feat = desc->features;
        while (feat) {
-               if (!strcmp(feat->name, "urn:AGL:widget:provided-unit")) {
+               if (!strcmp(feat->name, FWK_PREFIX"widget:provided-unit")) {
                        src = wgt_info_param(feat, "content.src");
                        type = wgt_info_param(feat, "content.type");
                        rc2 = action(src, type);
@@ -347,7 +398,11 @@ static int get_target_directory(char target[PATH_MAX], const char *root, const s
 {
        int rc;
 
+#if DISTINCT_VERSIONS
        rc = snprintf(target, PATH_MAX, "%s/%s/%s", root, desc->id, desc->ver);
+#else
+       rc = snprintf(target, PATH_MAX, "%s/%s", root, desc->id);
+#endif
        if (rc < PATH_MAX)
                rc = 0;
        else {
@@ -408,7 +463,7 @@ static int install_file_properties(const struct wgt_desc *desc)
        rc = 0;
        feat = desc->features;
        while (feat) {
-               if (!strcmp(feat->name, "urn:AGL:widget:file-properties")) {
+               if (!strcmp(feat->name, FWK_PREFIX"widget:file-properties")) {
                        param = feat->params;
                        while (param) {
                                if (!strcmp(param->value, "executable")) {
@@ -488,6 +543,16 @@ static int install_security(const struct wgt_desc *desc)
                perm = next_usable_permission();
        }
 
+       /* install default permissions */
+       n = (unsigned int)(sizeof default_permissions / sizeof *default_permissions);
+       for (i = 0 ; i < n ; i++) {
+               perm = default_permissions[i];
+               rc = secmgr_permit(perm);
+               INFO("permitting %s %s", perm, rc ? "FAILED!" : "success");
+               if (rc)
+                       goto error2;
+       }
+
        rc = secmgr_install();
        return rc;
 error2:
@@ -502,7 +567,7 @@ struct wgt_info *install_widget(const char *wgtfile, const char *root, int force
        struct wgt_info *ifo;
        const struct wgt_desc *desc;
        char installdir[PATH_MAX];
-       int port;
+       int err, rc;
        struct unitconf uconf;
 
        NOTICE("-- INSTALLING widget %s to %s --", wgtfile, root);
@@ -517,7 +582,12 @@ struct wgt_info *install_widget(const char *wgtfile, const char *root, int force
        if (zread(wgtfile, 0))
                goto error2;
 
-       if (check_all_signatures(DEFAULT_ALLOW_NO_SIGNATURE))
+#if defined(ALLOW_NO_SIGNATURE)
+       rc = check_all_signatures(1);
+#else
+       rc = check_all_signatures(0);
+#endif
+       if (rc)
                goto error2;
 
        ifo = wgt_info_createat(workdirfd, NULL, 1, 1, 1);
@@ -532,6 +602,16 @@ struct wgt_info *install_widget(const char *wgtfile, const char *root, int force
        if (get_target_directory(installdir, root, desc))
                goto error3;
 
+       if (access(installdir, F_OK) == 0) {
+               if (!force) {
+                       ERROR("widget already installed");
+                       errno = EEXIST;
+                       goto error3;
+               }
+               if (uninstall_widget(desc->idaver, root))
+                       goto error3;
+       }
+
        if (move_widget_to(installdir, force))
                goto error3;
 
@@ -547,13 +627,10 @@ struct wgt_info *install_widget(const char *wgtfile, const char *root, int force
        if (install_file_properties(desc))
                goto error4;
 
-       port = get_port();
-       if (port < 0)
-               goto error4;
-
        uconf.installdir = installdir;
        uconf.icondir = FWK_ICON_DIR;
-       uconf.port = port;
+       uconf.new_afid = get_new_afid;
+       uconf.base_http_ports = HTTP_PORT_BASE;
        if (unit_install(ifo, &uconf))
                goto error4;
 
@@ -567,7 +644,9 @@ error3:
        wgt_info_unref(ifo);
 
 error2:
+       err = errno;
        remove_workdir();
+       errno = err;
 
 error1:
        file_reset();