rest: add GET /efi

Add GET /efi request to obtain information about the client's
boot entries.

Field inside the /refresh payload
'efi': {
  'entries': [
    {
      "order": 0,
      "name": "Boot0000",
      "active": false,
      "description": "grub"
    },
    {
      "order": 1,
      "name": "Boot0001",
      "active": true,
      "description": "UEFI: PXE IP4 Realtek PCIe GBE Family Controller"
    }
  ]
}

If the client is not a EFI system it won't add the 'efi' field.
If an entry is not in the boot order it won't have the 'order' field.

GET /efi resquest payload structure:
{
    'clients': ['10.141.10.21', '10.141.10.22']
}

GET /efi response's structure:
{
  'clients': [
    {
      'ip': '10.141.10.21',
      'entries': [
        {
          "order": 0,
          "name": "Boot0000",
          "active": false,
          "description": "grub"
        },
        {
          "order": 1,
          "name": "Boot0001",
          "active": true,
          "description": "UEFI: PXE IP4 Realtek PCIe GBE Family Controller"
        }
      ]
    },
    {
      'ip': '10.141.10.22',
      'entries': []
    }
  ]
}

The client with ip 10.141.10.22 is a BIOS system.

If an entry does not appear in the boot order it won't have the
'order' field.

6 files changed, 355 insertions, 0 deletions

diff --git a/src/client.c b/src/client.c
index 675be74..17bc8a7 100644
--- a/src/client.c
+++ b/src/client.c
@@ -435,6 +435,45 @@ static int og_update_cache_info(struct og_dbi *dbi, struct list_head *cache_list
 	return 0;
 }
 
+static int og_update_boot_entries(struct og_dbi *dbi, struct list_head *boot_entry_list, int client_id)
+{
+	struct og_boot_entry *boot_entry;
+	const char *msglog;
+	dbi_result result;
+
+	/* Remove old boot entries */
+	result = dbi_conn_queryf(dbi->conn,
+		"DELETE FROM boot_entries WHERE client_id=%d;", client_id);
+
+	if (!result) {
+		dbi_conn_error(dbi->conn, &msglog);
+		syslog(LOG_ERR, "failed to query database (%s:%d) %s\n",
+		       __func__, __LINE__, msglog);
+		return -1;
+	}
+	dbi_result_free(result);
+	/* Add new boot entries */
+	list_for_each_entry(boot_entry, boot_entry_list, list) {
+		result = dbi_conn_queryf(dbi->conn,
+			"INSERT INTO boot_entries (client_id, name, active, description, entry_order)"
+			"VALUES (%d, '%s', %d, '%s', %d)",
+			client_id,
+			boot_entry->name,
+			boot_entry->active ? 1 : 0,
+			boot_entry->description,
+			boot_entry->order == UINT64_MAX ? -1 : boot_entry->order);
+
+		if (!result) {
+			dbi_conn_error(dbi->conn, &msglog);
+			syslog(LOG_ERR, "failed to query database (%s:%d) %s\n",
+				__func__, __LINE__, msglog);
+			return -1;
+		}
+		dbi_result_free(result);
+	}
+	return 0;
+}
+
 static int og_resp_update_cache(json_t *data, struct og_client *cli)
 {
 	struct og_computer computer = {};
@@ -496,6 +535,7 @@ static int og_resp_refresh(json_t *data, struct og_client *cli)
 	struct og_computer computer = {};
 	json_t *value, *cache = NULL;
 	const char *status = NULL;
+	LIST_HEAD(boot_entry_list);
 	LIST_HEAD(cache_list);
 	char cfg[4096] = {};
 	struct og_dbi *dbi;
@@ -519,6 +559,8 @@ static int og_resp_refresh(json_t *data, struct og_client *cli)
 			err = og_json_parse_string(value, &status);
 		} else if (!strcmp(key, "link")) {
 			err = og_json_parse_uint(value, &link);
+		} else if (!strcmp(key, "efi")) {
+			err = og_json_parse_efi(value, &boot_entry_list);
 		} else if (!strcmp(key, "cache")) {
 			err = og_json_parse_cache(value, &cache_list);
 			cache = value;
@@ -595,6 +637,12 @@ static int og_resp_refresh(json_t *data, struct og_client *cli)
 		goto err_out;
 	}
 
+	res = og_update_boot_entries(dbi, &boot_entry_list, computer.id);
+	if (err < 0) {
+		og_dbi_close(dbi);
+		goto err_out;
+	}
+
 	res = actualizaConfiguracion(dbi, cfg, computer.id);
 	og_dbi_close(dbi);
 
@@ -611,9 +659,11 @@ static int og_resp_refresh(json_t *data, struct og_client *cli)
 	}
 
 	og_cache_image_free(&cache_list);
+	og_boot_entry_free(&boot_entry_list);
 	return 0;
 err_out:
 	og_cache_image_free(&cache_list);
+	og_boot_entry_free(&boot_entry_list);
 	return -1;
 }
 
diff --git a/src/json.c b/src/json.c
index 11e66eb..638b1cb 100644
--- a/src/json.c
+++ b/src/json.c
@@ -303,3 +303,100 @@ int og_json_parse_cache(json_t *element, struct list_head *cache_list)
 
 	return err;
 }
+
+void og_boot_entry_free(struct list_head *boot_entry_list)
+{
+	struct og_boot_entry *boot_entry, *tmp;
+
+	list_for_each_entry_safe(boot_entry, tmp, boot_entry_list, list) {
+		list_del(&boot_entry->list);
+		free(boot_entry);
+	}
+}
+
+int og_json_parse_boot_entries(json_t *json_entries, struct list_head *boot_entry_list)
+{
+	uint64_t required_flags = OG_PARAM_EFI_NAME | OG_PARAM_EFI_DESCRIPTION | OG_PARAM_EFI_ACTIVE;
+	struct og_boot_entry *boot_entry;
+	json_t *json_elem, *value;
+	uint64_t flags = 0UL;
+	unsigned long i;
+	const char *key;
+	int err = 0;
+
+	if (json_typeof(json_entries) != JSON_ARRAY)
+		return -1;
+
+	for (i = 0; i < json_array_size(json_entries); i++) {
+		boot_entry = calloc(1, sizeof(struct og_boot_entry));
+		boot_entry->order = UINT64_MAX;
+		flags = 0UL;
+
+		if (!boot_entry)
+			return -1;
+
+		json_elem = json_array_get(json_entries, i);
+
+		if (json_typeof(json_elem) != JSON_OBJECT) {
+			free(boot_entry);
+			return -1;
+		}
+
+		json_object_foreach(json_elem, key, value) {
+			if (!strcmp(key, "name")) {
+				err = og_json_parse_string(value, &boot_entry->name);
+				flags |= OG_PARAM_EFI_NAME;
+			} else if (!strcmp(key, "active")) {
+				err = og_json_parse_bool(value, &boot_entry->active);
+				flags |= OG_PARAM_EFI_ACTIVE;
+			} else if (!strcmp(key, "description")) {
+				err = og_json_parse_string(value, &boot_entry->description);
+				flags |= OG_PARAM_EFI_DESCRIPTION;
+			} else if (!strcmp(key, "order")) {
+				err = og_json_parse_uint64(value, &boot_entry->order);
+			} else
+				err = -1;
+
+			if (err < 0) {
+				free(boot_entry);
+				return err;
+			}
+		}
+
+		if ((flags & required_flags) != required_flags) {
+			free(boot_entry);
+			return -1;
+		}
+
+		list_add_tail(&boot_entry->list, boot_entry_list);
+	}
+	return err;
+}
+
+int og_json_parse_efi(json_t *element, struct list_head *boot_entry_list)
+{
+	uint64_t required_flags = OG_PARAM_EFI_ENTRIES;
+	uint64_t flags = 0UL;
+	const char *key;
+	json_t *value;
+	int err = 0;
+
+	if (json_typeof(element) != JSON_OBJECT)
+		return -1;
+
+	json_object_foreach(element, key, value) {
+		if (!strcmp(key, "entries")) {
+			err = og_json_parse_boot_entries(value, boot_entry_list);
+			flags |= OG_PARAM_EFI_ENTRIES;
+		} else
+			err = -1;
+
+		if (err < 0)
+			return err;
+	}
+
+	if ((flags & required_flags) != required_flags)
+		return -1;
+
+	return err;
+}
diff --git a/src/json.h b/src/json.h
index d3838cf..421f88d 100644
--- a/src/json.h
+++ b/src/json.h
@@ -2,6 +2,7 @@
 #define _OG_JSON_H
 
 #include <jansson.h>
+#include <stdint.h>
 #include "schedule.h"
 
 int og_json_parse_string(const json_t *element, const char **str);
@@ -146,4 +147,22 @@ struct og_cache_image {
 void og_cache_image_free(struct list_head *cache_list);
 int og_json_parse_cache(json_t *element, struct list_head *cache_list);
 
+
+#define OG_PARAM_EFI_ENTRIES        (1UL << 0)
+#define OG_PARAM_EFI_ORDER          (1UL << 1)
+#define OG_PARAM_EFI_NAME           (1UL << 2)
+#define OG_PARAM_EFI_DESCRIPTION    (1UL << 3)
+#define OG_PARAM_EFI_ACTIVE         (1UL << 4)
+
+struct og_boot_entry {
+	const char *description;
+	const char *name;
+	bool   active;
+	uint64_t order;
+	struct list_head list;
+};
+
+void og_boot_entry_free(struct list_head *boot_entry_list);
+int og_json_parse_efi(json_t *element, struct list_head *boot_entry_list);
+
 #endif
diff --git a/src/rest.c b/src/rest.c
index 1894111..99fbe1f 100644
--- a/src/rest.c
+++ b/src/rest.c
@@ -4337,6 +4337,143 @@ static int og_cmd_cache_list(json_t *element, struct og_msg_params *params,
 	return 0;
 }
 
+static int og_dbi_client_efi_get(struct og_dbi *dbi, json_t *clients, const char *ip)
+{
+	json_t *client_data, *boot_entry, *boot_entry_arr;
+	const char *msglog, *entry_name, *entry_description;
+	bool entry_active;
+	int entry_order;
+	dbi_result result;
+
+	client_data = json_object();
+	if (!client_data)
+		return -1;
+
+	json_object_set_new(client_data, "ip", json_string(ip));
+
+	result = dbi_conn_queryf(dbi->conn,
+		"SELECT boot_entries.name, boot_entries.active, "
+		"boot_entries.description, boot_entries.entry_order "
+		"FROM boot_entries JOIN ordenadores "
+		"ON ordenadores.idordenador = boot_entries.client_id "
+		"WHERE ordenadores.ip = '%s' "
+		"ORDER BY "
+		"    CASE "
+		"        WHEN boot_entries.entry_order >= 0 THEN 0 ELSE 1 "
+		"    END ASC, "
+		"    boot_entries.entry_order ASC", ip);
+
+	if (!result) {
+		json_decref(client_data);
+		dbi_conn_error(dbi->conn, &msglog);
+		syslog(LOG_ERR, "failed to query database (%s:%d) %s\n",
+		       __func__, __LINE__, msglog);
+		return -1;
+	}
+
+	boot_entry_arr = json_array();
+	if (!boot_entry_arr) {
+		json_decref(client_data);
+		dbi_result_free(result);
+		return -1;
+	}
+
+	while (dbi_result_next_row(result)) {
+		entry_name = dbi_result_get_string(result, "name");
+		entry_active = dbi_result_get_int(result, "active") != 0;
+		entry_description = dbi_result_get_string(result, "description");
+		entry_order = dbi_result_get_int(result, "entry_order");
+
+		boot_entry = json_object();
+		if (!boot_entry) {
+			json_decref(client_data);
+			json_decref(boot_entry_arr);
+			dbi_result_free(result);
+			return -1;
+		}
+
+		json_object_set_new(boot_entry, "name", json_string(entry_name));
+		json_object_set_new(boot_entry, "active", json_boolean(entry_active));
+		json_object_set_new(boot_entry, "description", json_string(entry_description));
+		if (entry_order >= 0)
+			json_object_set_new(boot_entry, "order", json_integer(entry_order));
+		json_array_append_new(boot_entry_arr, boot_entry);
+	}
+	json_object_set_new(client_data, "entries", boot_entry_arr);
+	json_array_append_new(clients, client_data);
+	dbi_result_free(result);
+
+	return 0;
+}
+
+static int og_cmd_efi_list(json_t *element, struct og_msg_params *params,
+			    char *buffer_reply)
+{
+	json_t *value, *root, *clients;
+	struct og_dbi *dbi;
+	const char *key;
+	int err = 0, i;
+
+	struct og_buffer og_buffer = {
+		.data = buffer_reply
+	};
+
+	if (json_typeof(element) != JSON_OBJECT)
+		return -1;
+
+	json_object_foreach(element, key, value) {
+		if (!strcmp(key, "clients"))
+			err = og_json_parse_clients(value, params);
+		else
+			err = -1;
+
+		if (err < 0)
+			return err;
+	}
+
+	if (!og_msg_params_validate(params, OG_REST_PARAM_ADDR))
+		return -1;
+
+	clients = json_array();
+	if (!clients)
+		return -1;
+
+	dbi = og_dbi_open(&ogconfig.db);
+	if (!dbi) {
+		syslog(LOG_ERR, "cannot open connection database (%s:%d)\n",
+		       __func__, __LINE__);
+		json_decref(clients);
+		return -1;
+	}
+
+	for (i = 0; i < params->ips_array_len; i++) {
+		if (og_dbi_client_efi_get(dbi, clients, params->ips_array[i]) < 0) {
+			json_decref(clients);
+			og_dbi_close(dbi);
+			return -1;
+		}
+	}
+
+	og_dbi_close(dbi);
+
+	root = json_object();
+	if (!root) {
+		json_decref(clients);
+		return -1;
+	}
+
+	json_object_set_new(root, "clients", clients);
+
+	if (json_dump_callback(root, og_json_dump_clients, &og_buffer, JSON_ENSURE_ASCII)) {
+		json_decref(root);
+		return -1;
+	}
+
+	json_decref(root);
+
+	return 0;
+}
+
 static int og_cmd_cache_delete(json_t *element, struct og_msg_params *params,
 			    char *buffer_reply)
 {
@@ -8317,6 +8454,7 @@ struct {
 	[OG_URI_CACHE_LIST]	= { "cache/list", },
 	[OG_URI_CACHE_DELETE]	= { "cache/delete", },
 	[OG_URI_CACHE_FETCH]	= { "cache/fetch", },
+	[OG_URI_EFI]	= { "efi", },
 	[OG_URI_PART_SETUP]	= { "setup", },
 	[OG_URI_RUN_SCHEDULE]	= { "run/schedule", },
 	[OG_URI_TASK_RUN]	= { "task/run", },
@@ -8928,6 +9066,19 @@ int og_client_state_process_payload_rest(struct og_client *cli)
 			goto err_process_rest_payload;
 		}
 		err = og_cmd_cache_list(root, &params, buf_reply);
+	} else if (!strncmp(cmd, "efi", strlen("efi"))) {
+		if (method != OG_METHOD_GET) {
+			err = og_client_method_not_found(cli);
+			goto err_process_rest_payload;
+		}
+
+		if (!root) {
+			syslog(LOG_ERR,
+			       "command efi with no payload\n");
+			err = og_client_bad_request(cli);
+			goto err_process_rest_payload;
+		}
+		err = og_cmd_efi_list(root, &params, buf_reply);
 	} else if (!strncmp(cmd, "cache/delete", strlen("cache/delete"))) {
 		if (method != OG_METHOD_POST) {
 			err = og_client_method_not_found(cli);
diff --git a/src/rest.h b/src/rest.h
index fea0849..28ccfda 100644
--- a/src/rest.h
+++ b/src/rest.h
@@ -128,6 +128,7 @@ enum og_rest_uri {
 	OG_URI_IMAGE_DELETE,
 	OG_URI_IMAGE_RESTRICT,
 	OG_URI_CACHE_LIST,
+	OG_URI_EFI,
 	OG_URI_CACHE_DELETE,
 	OG_URI_CACHE_FETCH,
 	OG_URI_PART_SETUP,
diff --git a/src/schema.c b/src/schema.c
index 182f992..fd1d573 100644
--- a/src/schema.c
+++ b/src/schema.c
@@ -398,6 +398,42 @@ static int og_dbi_schema_v9(struct og_dbi *dbi)
 	return 0;
 }
 
+static int og_dbi_schema_v10(struct og_dbi *dbi)
+{
+	const char *msglog;
+	dbi_result result;
+
+	syslog(LOG_DEBUG, "Creating table boot_entries\n");
+	result = dbi_conn_query(dbi->conn, "CREATE TABLE `boot_entries` ("
+				"`id` BIGINT NOT NULL AUTO_INCREMENT,"
+				"`client_id` INT NOT NULL,"
+				"`name` VARCHAR(255),"
+				"`active` BOOLEAN,"
+				"`description` TEXT,"
+				"`entry_order` INT,"
+				"PRIMARY KEY (`id`),"
+				"FOREIGN KEY (`client_id`) REFERENCES `ordenadores` (`idordenador`) ON DELETE CASCADE"
+				")");
+	if (!result) {
+		dbi_conn_error(dbi->conn, &msglog);
+		syslog(LOG_INFO, "Error when creating boot_entries (%s:%d) %s\n",
+		       __func__, __LINE__, msglog);
+		return -1;
+	}
+	dbi_result_free(result);
+
+	result = dbi_conn_query(dbi->conn, "UPDATE version SET version = 10");
+	if (!result) {
+		dbi_conn_error(dbi->conn, &msglog);
+		syslog(LOG_INFO, "Could not update version row (%s:%d) %s\n",
+		       __func__, __LINE__, msglog);
+		return -1;
+	}
+	dbi_result_free(result);
+
+	return 0;
+}
+
 static struct og_schema_version {
 	int	version;
 	int	(*update)(struct og_dbi *dbi);
@@ -411,6 +447,7 @@ static struct og_schema_version {
 	{	.version = 7,	.update = og_dbi_schema_v7,	},
 	{	.version = 8,	.update = og_dbi_schema_v8,	},
 	{	.version = 9,	.update = og_dbi_schema_v9,	},
+	{	.version = 10,	.update = og_dbi_schema_v10,},
 	{	0,		NULL				},
 };