opkg: fix nullpointer dereference
[oweals/opkg-lede.git] / libopkg / opkg_cmd.c
index 56649ea6dfd4808a36dccf484a1b9dabd5cc334f..d9ad77a4816048f821a4d4b5a40d19deb25e8a5c 100644 (file)
@@ -141,23 +141,6 @@ opkg_cmd_t *opkg_cmd_find(const char *name)
      return NULL;
 }
 
-void opkg_print_error_list (opkg_conf_t *conf)
-{
-  if ( error_list ) {
-     reverse_error_list(&error_list);
-
-     printf ("Collected errors:\n");
-     /* Here we print the errors collected and free the list */
-     while (error_list != NULL) {
-           printf (" * %s", error_list->errmsg);
-           error_list = error_list->next;
-
-     }
-     free_error_list();
-  }
-
-}
-
 int opkg_cmd_exec(opkg_cmd_t *cmd, opkg_conf_t *conf, int argc, const char **argv, void *userdata)
 {
        int result;
@@ -166,11 +149,8 @@ int opkg_cmd_exec(opkg_cmd_t *cmd, opkg_conf_t *conf, int argc, const char **arg
 
        result = (cmd->fun)(conf, argc, argv);
 
-        if ( result != 0 && !error_list) {
-           opkg_message(conf, OPKG_NOTICE, "An error ocurred, return value: %d.\n", result);
-        }
-
-        opkg_print_error_list (conf);
+        print_error_list();
+       free_error_list();
 
        p_userdata = NULL;
        return result;
@@ -217,10 +197,10 @@ static int opkg_update_cmd(opkg_conf_t *conf, int argc, char **argv)
      }
 
 
-     for (iter = conf->pkg_src_list.head; iter; iter = iter->next) {
+     for (iter = void_list_first(&conf->pkg_src_list); iter; iter = void_list_next(&conf->pkg_src_list, iter)) {
          char *url, *list_file_name;
 
-         src = iter->data;
+         src = (pkg_src_t *)iter->data;
 
          if (src->extra_data)  /* debian style? */
              sprintf_alloc(&url, "%s/%s/%s", src->value, src->extra_data, 
@@ -249,6 +229,7 @@ static int opkg_update_cmd(opkg_conf_t *conf, int argc, char **argv)
                        fclose (out);
                   unlink (tmp_file_name);
              }
+             free(tmp_file_name);
          } else
              err = opkg_download(conf, url, list_file_name, NULL, NULL);
          if (err) {
@@ -259,39 +240,41 @@ static int opkg_update_cmd(opkg_conf_t *conf, int argc, char **argv)
                            list_file_name);
          }
          free(url);
-
-#ifdef HAVE_GPGME
-         /* download detached signitures to verify the package lists */
-         /* get the url for the sig file */
-         if (src->extra_data)  /* debian style? */
-             sprintf_alloc(&url, "%s/%s/%s", src->value, src->extra_data,
-                           "Packages.sig");
-         else
-             sprintf_alloc(&url, "%s/%s", src->value, "Packages.sig");
-
-         /* create temporary file for it */
-         char *tmp_file_name;
-
-         sprintf_alloc (&tmp_file_name, "%s/%s", tmp, "Packages.sig");
-
-         err = opkg_download(conf, url, tmp_file_name, NULL, NULL);
-         if (err) {
-           failures++;
-               opkg_message (conf, OPKG_NOTICE, "Signature check failed\n");
-         } else {
-           int err;
-           err = opkg_verify_file (conf, list_file_name, tmp_file_name);
-           if (err == 0)
-               opkg_message (conf, OPKG_NOTICE, "Signature check passed\n");
-           else
-               opkg_message (conf, OPKG_NOTICE, "Signature check failed\n");
-         }
-         unlink (tmp_file_name);
-         free (tmp_file_name);
-         free (url);
+#if defined(HAVE_GPGME) || defined(HAVE_OPENSSL)
+          if (conf->check_signature) {
+              /* download detached signitures to verify the package lists */
+              /* get the url for the sig file */
+              if (src->extra_data)     /* debian style? */
+                  sprintf_alloc(&url, "%s/%s/%s", src->value, src->extra_data,
+                          "Packages.sig");
+              else
+                  sprintf_alloc(&url, "%s/%s", src->value, "Packages.sig");
+
+              /* create temporary file for it */
+              char *tmp_file_name;
+
+              /* Put the signature in the right place */
+              sprintf_alloc (&tmp_file_name, "%s/%s.sig", lists_dir, src->name);
+
+              err = opkg_download(conf, url, tmp_file_name, NULL, NULL);
+              if (err) {
+                  failures++;
+                  opkg_message (conf, OPKG_NOTICE, "Signature check failed\n");
+              } else {
+                  int err;
+                  err = opkg_verify_file (conf, list_file_name, tmp_file_name);
+                  if (err == 0)
+                      opkg_message (conf, OPKG_NOTICE, "Signature check passed\n");
+                  else
+                      opkg_message (conf, OPKG_NOTICE, "Signature check failed\n");
+              }
+              /* We shouldn't unlink the signature ! */
+              // unlink (tmp_file_name);
+              free (tmp_file_name);
+              free (url);
+          }
 #else
-         opkg_message (conf, OPKG_NOTICE, "Signature check for %s skipped "
-              "because GPG support was not enabled in this build\n", src->name);
+          // Do nothing
 #endif
          free(list_file_name);
      }
@@ -378,6 +361,7 @@ static int opkg_finalize_intercepts(opkg_intercept_t ctx)
            }
            free (path);
        }
+        closedir(dir);
     } else
        perror (ctx->statedir);
        
@@ -448,7 +432,7 @@ static int opkg_recurse_pkgs_in_order(opkg_conf_t *conf, pkg_t *pkg, pkg_vec_t *
             dependents = abpkg->provided_by->pkgs;
             l = 0;
             if (dependents != NULL)
-                while (dependents [l] != NULL && l < abpkg->provided_by->len) {
+                while (l < abpkg->provided_by->len && dependents[l] != NULL) {
                     opkg_message(conf, OPKG_INFO,
                                  "  Descending on pkg: %s\n", 
                                  dependents [l]->name);
@@ -711,6 +695,7 @@ static int opkg_list_cmd(opkg_conf_t *conf, int argc, char **argv)
      }
      available = pkg_vec_alloc();
      pkg_hash_fetch_available(&conf->pkg_hash, available);
+     pkg_vec_sort(available, pkg_compare_names);
      for (i=0; i < available->len; i++) {
          pkg = available->pkgs[i];
          /* if we have package name or pattern and pkg does not match, then skip it */
@@ -756,6 +741,7 @@ static int opkg_list_installed_cmd(opkg_conf_t *conf, int argc, char **argv)
      }
      available = pkg_vec_alloc();
      pkg_hash_fetch_all_installed(&conf->pkg_hash, available);
+     pkg_vec_sort(available, pkg_compare_names);
      for (i=0; i < available->len; i++) {
          pkg = available->pkgs[i];
          /* if we have package name or pattern and pkg does not match, then skip it */
@@ -781,17 +767,19 @@ static int opkg_list_installed_cmd(opkg_conf_t *conf, int argc, char **argv)
          }
      }
 
+     pkg_vec_free(available);
+
      return 0;
 }
 
 static int opkg_list_upgradable_cmd(opkg_conf_t *conf, int argc, char **argv) 
 {
-    pkg_vec_t *all = opkg_upgrade_all_list_get(conf);
+    struct active_list *head = prepare_upgrade_list(conf);
+    struct active_list *node=NULL;
     pkg_t *_old_pkg, *_new_pkg;
     char *old_v, *new_v;
-    int i;
-    for (i=0;i<all->len;i++) {
-        _old_pkg = all->pkgs[i];
+    for (node = active_list_next(head, head); node;node = active_list_next(head,node)) {
+        _old_pkg = list_entry(node, pkg_t, list);
         _new_pkg = pkg_hash_fetch_best_installation_candidate_by_name(conf, _old_pkg->name, NULL);
         old_v = pkg_version_str_alloc(_old_pkg);
         new_v = pkg_version_str_alloc(_new_pkg);
@@ -800,7 +788,7 @@ static int opkg_list_upgradable_cmd(opkg_conf_t *conf, int argc, char **argv)
         free(old_v);
         free(new_v);
     }
-    pkg_vec_free(all);
+    active_list_head_delete(head);
     return 0;
 }
 
@@ -812,7 +800,7 @@ static int opkg_info_status_cmd(opkg_conf_t *conf, int argc, char **argv, int in
      char *pkg_name = NULL;
      char **pkg_fields = NULL;
      int n_fields = 0;
-     char *buff ; 
+     char *buff = NULL
 
      if (argc > 0) {
          pkg_name = argv[0];
@@ -844,11 +832,12 @@ static int opkg_info_status_cmd(opkg_conf_t *conf, int argc, char **argv, int in
    We need to free it :)  ( Thanks florian for seeing the error )
 */
                free(buff);
+               buff = NULL;
           }
          if (conf->verbosity > 1) {
               conffile_list_elt_t *iter;
-              for (iter = pkg->conffiles.head; iter; iter = iter->next) {
-                   conffile_t *cf = iter->data;
+              for (iter = nv_pair_list_first(&pkg->conffiles); iter; iter = nv_pair_list_next(&pkg->conffiles, iter)) {
+                   conffile_t *cf = (conffile_t *)iter->data;
                    int modified = conffile_has_been_modified(conf, cf);
                    opkg_message(conf, OPKG_NOTICE, "conffile=%s md5sum=%s modified=%d\n",
                                 cf->name, cf->value, modified);
@@ -962,7 +951,7 @@ static int opkg_remove_cmd(opkg_conf_t *conf, int argc, char **argv)
                    pkg_to_remove = pkg_hash_fetch_installed_by_name(&conf->pkg_hash, pkg->name );
                }
         
-               if (pkg == NULL) {
+               if (pkg_to_remove == NULL) {
                    opkg_message(conf, OPKG_ERROR, "Package %s is not installed.\n", pkg->name);
                    continue;
                }
@@ -1138,7 +1127,7 @@ static int opkg_files_cmd(opkg_conf_t *conf, int argc, char **argv)
               buff = realloc (buff, buff_len);
               goto try_again;
          }
-         for (iter = installed_files->head; iter; iter = iter->next) {
+         for (iter = str_list_first(installed_files); iter; iter = str_list_next(installed_files, iter)) {
               used_len += strlen (iter->data) + 1;
               while (buff_len <= used_len) {
                    buff_len *= 2;
@@ -1438,14 +1427,15 @@ static int opkg_search_cmd(opkg_conf_t *conf, int argc, char **argv)
  
      installed = pkg_vec_alloc();
      pkg_hash_fetch_all_installed(&conf->pkg_hash, installed);
+     pkg_vec_sort(installed, pkg_compare_names);
 
      for (i=0; i < installed->len; i++) {
          pkg = installed->pkgs[i];
 
          installed_files = pkg_get_installed_files(pkg);
 
-         for (iter = installed_files->head; iter; iter = iter->next) {
-              installed_file = iter->data;
+         for (iter = str_list_first(installed_files); iter; iter = str_list_next(installed_files, iter)) {
+              installed_file = (char *)iter->data;
               if (fnmatch(argv[0], installed_file, 0)==0)  {
                        if (opkg_cb_list) opkg_cb_list(pkg->name, 
                                                       installed_file, 
@@ -1457,9 +1447,6 @@ static int opkg_search_cmd(opkg_conf_t *conf, int argc, char **argv)
          pkg_free_installed_files(pkg);
      }
 
-     /* XXX: CLEANUP: It's not obvious from the name of
-       pkg_hash_fetch_all_installed that we need to call
-       pkg_vec_free to avoid a memory leak. */
      pkg_vec_free(installed);
 
      return 0;
@@ -1491,11 +1478,9 @@ static int opkg_print_architecture_cmd(opkg_conf_t *conf, int argc, char **argv)
 {
      nv_pair_list_elt_t *l;
 
-     l = conf->arch_list.head;
-     while (l) {
-         nv_pair_t *nv = l->data;
+     list_for_each_entry(l, &conf->arch_list.head, node) {
+         nv_pair_t *nv = (nv_pair_t *)l->data;
          printf("arch %s %s\n", nv->name, nv->value);
-         l = l->next;
      }
      return 0;
 }