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Fixes: #1177 Signed-off-by: Sohan Kunkerkar <sohank2602@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,287 @@ | ||
| /* | ||
| * crun - OCI runtime written in C | ||
| * | ||
| * crun is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation; either version 2 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * crun is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with crun. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
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| #include <config.h> | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <argp.h> | ||
| #include <string.h> | ||
| #include <unistd.h> | ||
| #include <errno.h> | ||
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| #include <yajl/yajl_tree.h> | ||
| #include <yajl/yajl_gen.h> | ||
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| #include "crun.h" | ||
| #include "libcrun/container.h" | ||
| #include "libcrun/utils.h" | ||
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| #define cleanup_struct_features __attribute__ ((cleanup (cleanup_struct_features_free))) | ||
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| static char doc[] = "OCI runtime"; | ||
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| static struct argp_option options[] = { { 0 } }; | ||
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| static char args_doc[] = "features"; | ||
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| const unsigned char *json_string; | ||
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| size_t json_length; | ||
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| static error_t | ||
| parse_opt (int key, char *arg arg_unused, struct argp_state *state arg_unused) | ||
| { | ||
| if (key != ARGP_KEY_NO_ARGS) | ||
| { | ||
| return ARGP_ERR_UNKNOWN; | ||
| } | ||
|
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| return 0; | ||
| } | ||
|
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| static struct argp run_argp = { options, parse_opt, args_doc, doc, NULL, NULL, NULL }; | ||
|
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| void | ||
| add_string_to_json (yajl_gen json_gen, const char *key, const char *value) | ||
| { | ||
| yajl_gen_string (json_gen, (const unsigned char *) key, strlen (key)); | ||
| yajl_gen_string (json_gen, (const unsigned char *) value, strlen (value)); | ||
| } | ||
|
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| void | ||
| add_bool_to_json (yajl_gen json_gen, const char *key, int value) | ||
| { | ||
| yajl_gen_string (json_gen, (const unsigned char *) key, strlen (key)); | ||
| yajl_gen_bool (json_gen, value); | ||
| } | ||
|
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| void | ||
| add_array_to_json (yajl_gen json_gen, const char *key, const char **array) | ||
| { | ||
| yajl_gen_string (json_gen, (const unsigned char *) key, strlen (key)); | ||
| yajl_gen_array_open (json_gen); | ||
|
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| for (size_t i = 0; array[i] != NULL; i++) | ||
| { | ||
| yajl_gen_string (json_gen, (const unsigned char *) array[i], strlen (array[i])); | ||
| } | ||
|
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| yajl_gen_array_close (json_gen); | ||
| } | ||
|
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| void | ||
| crun_features_add_hooks (yajl_gen json_gen, const char **hooks) | ||
| { | ||
| add_array_to_json (json_gen, "hooks", hooks); | ||
| } | ||
|
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| void | ||
| crun_features_add_mount_options (yajl_gen json_gen, const char **mount_options) | ||
| { | ||
| add_array_to_json (json_gen, "mountOptions", mount_options); | ||
| } | ||
|
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| void | ||
| crun_features_add_namespaces (yajl_gen json_gen, const struct linux_info_s *linux) | ||
| { | ||
| add_array_to_json (json_gen, "namespaces", linux->namespaces); | ||
| } | ||
|
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| void | ||
| crun_features_add_capabilities (yajl_gen json_gen, const struct linux_info_s *linux) | ||
| { | ||
| add_array_to_json (json_gen, "capabilities", linux->capabilities); | ||
| } | ||
|
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| void | ||
| crun_features_add_cgroup_info (yajl_gen json_gen, const struct linux_info_s *linux) | ||
| { | ||
| yajl_gen_string (json_gen, (const unsigned char *) "cgroup", strlen ("cgroup")); | ||
| yajl_gen_map_open (json_gen); | ||
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| add_bool_to_json (json_gen, "v1", linux->cgroup.v1); | ||
| add_bool_to_json (json_gen, "v2", linux->cgroup.v2); | ||
| add_bool_to_json (json_gen, "systemd", linux->cgroup.systemd); | ||
| add_bool_to_json (json_gen, "systemdUser", linux->cgroup.systemdUser); | ||
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| yajl_gen_map_close (json_gen); | ||
| } | ||
|
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| void | ||
| crun_features_add_seccomp_info (yajl_gen json_gen, const struct linux_info_s *linux) | ||
| { | ||
| yajl_gen_string (json_gen, (const unsigned char *) "seccomp", strlen ("seccomp")); | ||
| yajl_gen_map_open (json_gen); | ||
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| yajl_gen_string (json_gen, (const unsigned char *) "/* TODO: */", strlen ("/* TODO: */")); | ||
|
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| yajl_gen_map_close (json_gen); | ||
| } | ||
|
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| void | ||
| crun_features_add_apparmor_info (yajl_gen json_gen, const struct linux_info_s *linux) | ||
| { | ||
| yajl_gen_string (json_gen, (const unsigned char *) "apparmor", strlen ("apparmor")); | ||
| yajl_gen_map_open (json_gen); | ||
|
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| add_bool_to_json (json_gen, "enabled", linux->apparmor.enabled); | ||
|
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| // Close the map for apparmor | ||
| yajl_gen_map_close (json_gen); | ||
| } | ||
|
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| void | ||
| crun_features_add_selinux_info (yajl_gen json_gen, const struct linux_info_s *linux) | ||
| { | ||
| yajl_gen_string (json_gen, (const unsigned char *) "selinux", strlen ("selinux")); | ||
| yajl_gen_map_open (json_gen); | ||
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| add_bool_to_json (json_gen, "enabled", linux->selinux.enabled); | ||
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| // Close the map for selinux | ||
| yajl_gen_map_close (json_gen); | ||
| } | ||
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| void | ||
| crun_features_add_linux_info (yajl_gen json_gen, const struct linux_info_s *linux) | ||
| { | ||
| yajl_gen_string (json_gen, (const unsigned char *) "linux", strlen ("linux")); | ||
| yajl_gen_map_open (json_gen); | ||
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| crun_features_add_namespaces (json_gen, linux); | ||
| crun_features_add_capabilities (json_gen, linux); | ||
| crun_features_add_cgroup_info (json_gen, linux); | ||
| crun_features_add_seccomp_info (json_gen, linux); | ||
| crun_features_add_apparmor_info (json_gen, linux); | ||
| crun_features_add_selinux_info (json_gen, linux); | ||
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| yajl_gen_map_close (json_gen); | ||
| } | ||
|
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| static inline void | ||
| cleanup_struct_features_free (struct features_info_s **info) | ||
| { | ||
| if (info == NULL || *info == NULL) | ||
| return; | ||
|
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| struct features_info_s *ptr = *info; | ||
|
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| // Free oci_version_min if it is not NULL | ||
| if (ptr->oci_version_min != NULL) | ||
| { | ||
| free ((void *) ptr->oci_version_min); | ||
| ptr->oci_version_min = NULL; // Set to NULL after freeing | ||
| } | ||
|
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| // Free oci_version_max if it is not NULL | ||
| if (ptr->oci_version_max != NULL) | ||
| { | ||
| free ((void *) ptr->oci_version_max); | ||
| ptr->oci_version_max = NULL; // Set to NULL after freeing | ||
| } | ||
| if (ptr->hooks != NULL) | ||
| { | ||
| for (size_t i = 0; ptr->hooks[i] != NULL; i++) | ||
| { | ||
| free ((void *) ptr->hooks[i]); | ||
| } | ||
| free (ptr->hooks); | ||
| } | ||
| if (ptr->mount_options != NULL) | ||
| { | ||
| for (size_t i = 0; ptr->mount_options[i] != NULL; i++) | ||
| { | ||
| free ((void *) ptr->mount_options[i]); | ||
| } | ||
| free (ptr->mount_options); | ||
| } | ||
| if (ptr->linux.namespaces != NULL) | ||
| { | ||
| for (size_t i = 0; ptr->linux.namespaces[i] != NULL; i++) | ||
| { | ||
| free ((void *) ptr->linux.namespaces[i]); | ||
| } | ||
| free (ptr->linux.namespaces); | ||
| } | ||
|
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| if (ptr->linux.capabilities != NULL) | ||
| { | ||
| for (size_t i = 0; ptr->linux.capabilities[i] != NULL; i++) | ||
| { | ||
| free ((void *) ptr->linux.capabilities[i]); | ||
| } | ||
| free (ptr->linux.capabilities); | ||
| } | ||
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| free (ptr); | ||
| *info = NULL; | ||
| } | ||
|
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| int | ||
| crun_command_features (struct crun_global_arguments *global_args, int argc, char **argv, libcrun_error_t *err) | ||
| { | ||
| argp_parse (&run_argp, argc, argv, 0, 0, &options); | ||
|
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| // Call the function in features.c to gather the feature information | ||
| cleanup_struct_features struct features_info_s *info = NULL; | ||
| int result = libcrun_container_get_features (&info); | ||
| if (result != 0) | ||
| { | ||
| libcrun_make_error (err, 0, "Failed to gather features information."); | ||
| return result; | ||
| } | ||
|
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| // Prepare the JSON output | ||
| yajl_gen json_gen = yajl_gen_alloc (NULL); | ||
| if (json_gen == NULL) | ||
| { | ||
| libcrun_make_error (err, errno, "Failed to initialize json structure."); | ||
| return 0; | ||
| } | ||
| yajl_gen_status status; | ||
|
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| yajl_gen_config (json_gen, yajl_gen_beautify, 1); // Optional: Enable pretty formatting | ||
|
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| // Start building the JSON | ||
| yajl_gen_map_open (json_gen); | ||
|
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| // Add ociVersionMin field | ||
| add_string_to_json (json_gen, "ociVersionMin", info->oci_version_min); | ||
|
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| // Add ociVersionMax field | ||
| add_string_to_json (json_gen, "ociVersionMax", info->oci_version_max); | ||
|
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| // Add hooks array | ||
| crun_features_add_hooks (json_gen, info->hooks); | ||
|
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| // Add mountOptions array | ||
| crun_features_add_mount_options (json_gen, info->mount_options); | ||
|
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| // Add linux struct info | ||
| crun_features_add_linux_info (json_gen, &info->linux); | ||
|
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| // End building the JSON | ||
| yajl_gen_map_close (json_gen); | ||
|
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| yajl_gen_get_buf (json_gen, &json_string, &json_length); | ||
|
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| printf ("%s", (const char *) json_string); | ||
|
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| yajl_gen_free (json_gen); | ||
|
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| return 0; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| /* | ||
| * crun - OCI runtime written in C | ||
| * | ||
| * Copyright (C) 2017, 2018, 2019 Giuseppe Scrivano <giuseppe@scrivano.org> | ||
| * crun is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation; either version 2 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * crun is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with crun. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| #ifndef FEATURES_H | ||
| #define FEATURES_H | ||
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| #include "crun.h" | ||
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| int crun_command_features (struct crun_global_arguments *global_args, int argc, char **argv, libcrun_error_t *error); | ||
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| #endif |
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