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-rw-r--r--src/irmd/configfile.c837
1 files changed, 837 insertions, 0 deletions
diff --git a/src/irmd/configfile.c b/src/irmd/configfile.c
new file mode 100644
index 00000000..787edb49
--- /dev/null
+++ b/src/irmd/configfile.c
@@ -0,0 +1,837 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2023
+ *
+ * The IPC Resource Manager / Configuration from file
+ *
+ * Dimitri Staessens <[email protected]>
+ * Sander Vrijders <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+
+#include "config.h"
+
+#if defined (HAVE_TOML)
+
+#define _XOPEN_SOURCE 500
+
+#define OUROBOROS_PREFIX "irmd/configuration"
+
+#include <toml.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <stdlib.h>
+#include <string.h>
+#include <arpa/inet.h>
+
+#include <ouroboros/errno.h>
+#include <ouroboros/ipcp.h>
+#include <ouroboros/logs.h>
+
+#include "irmd.h"
+#include "configfile.h"
+#include "utils.h"
+
+#define ERRBUFSZ 200
+
+static int toml_hash(toml_table_t * table,
+ struct layer_info * info)
+{
+ toml_datum_t hash;
+
+ hash = toml_string_in(table, "hash");
+ if (!hash.ok) {
+ log_dbg("No hash specified, using default.");
+ return 0;
+ }
+
+ if (strcmp(hash.u.s, "SHA3_224") == 0) {
+ info->dir_hash_algo = DIR_HASH_SHA3_224;
+ } else if (strcmp(hash.u.s, "SHA3_256") == 0) {
+ info->dir_hash_algo = DIR_HASH_SHA3_256;
+ } else if (strcmp(hash.u.s, "SHA3_384") == 0) {
+ info->dir_hash_algo = DIR_HASH_SHA3_384;
+ } else if (strcmp(hash.u.s, "SHA3_512") == 0) {
+ info->dir_hash_algo = DIR_HASH_SHA3_512;
+ } else {
+ log_err("Unknown hash algorithm: %s.", hash.u.s);
+ free(hash.u.s);
+ return -1;
+ }
+
+ free(hash.u.s);
+
+ return 0;
+}
+
+static int toml_local(toml_table_t * table,
+ struct ipcp_config * conf)
+{
+ *conf = local_default_conf;
+
+ return toml_hash(table, &conf->layer_info);
+}
+
+static int toml_eth_dev(toml_table_t * table,
+ struct eth_config * conf)
+{
+ toml_datum_t dev;
+
+ dev = toml_string_in(table, "dev");
+ if (!dev.ok) {
+ log_err("Missing device.");
+ return -1;
+ }
+
+ if (strlen(dev.u.s) > DEV_NAME_SIZE) {
+ log_err("Device name too long: %s", dev.u.s);
+ free(dev.u.s);
+ return -1;
+ }
+
+ strcpy(conf->dev, dev.u.s);
+ free(dev.u.s);
+
+ return 0;
+}
+
+static int toml_eth_llc(toml_table_t * table,
+ struct ipcp_config * conf)
+{
+ *conf = eth_llc_default_conf;
+
+ if (toml_hash(table, &conf->layer_info) < 0)
+ return -1;
+
+ return toml_eth_dev(table, &conf->eth);
+}
+
+
+static int toml_ethertype(toml_table_t * table,
+ struct eth_config * conf)
+{
+ toml_datum_t ethertype;
+
+ ethertype = toml_int_in(table, "ethertype");
+ if (ethertype.ok)
+ conf->ethertype = ethertype.u.i;
+
+ if (conf->ethertype < 0x0600 || conf->ethertype == 0xFFFF)
+ return -1;
+
+ return 0;
+}
+
+static int toml_eth_dix(toml_table_t * table,
+ struct ipcp_config * conf)
+{
+ *conf = eth_dix_default_conf;
+
+ if (toml_hash(table, &conf->layer_info) < 0)
+ return -1;
+
+ if (toml_eth_dev(table, &conf->eth) < 0)
+ return -1;
+
+ if (toml_ethertype(table, &conf->eth) < 0) {
+ log_err("Ethertype not in valid range.");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int toml_udp(toml_table_t * table,
+ struct ipcp_config * conf)
+{
+ toml_datum_t ip;
+ toml_datum_t port;
+ toml_datum_t dns;
+
+ *conf = udp_default_conf;
+
+ ip = toml_string_in(table, "ip");
+ if (!ip.ok) {
+ log_err("No IP address specified!");
+ goto fail_ip;
+ }
+
+ if (inet_pton (AF_INET, ip.u.s, &conf->udp.ip_addr) != 1) {
+ log_err("Failed to parse IPv4 address %s.", ip.u.s);
+ goto fail_addr;
+ }
+
+ port = toml_int_in(table, "port");
+ if (port.ok)
+ conf->udp.port = port.u.i;
+
+ dns = toml_string_in(table, "dns");
+ if (dns.ok) {
+ if (inet_pton(AF_INET, dns.u.s, &conf->udp.dns_addr) < 0) {
+ log_err("Failed to parse DNS address %s.", ip.u.s);
+ goto fail_dns;
+ }
+
+ free(dns.u.s);
+ }
+
+ free(ip.u.s);
+
+ return 0;
+
+ fail_dns:
+ free(dns.u.s);
+ fail_addr:
+ free(ip.u.s);
+ fail_ip:
+ return -1;
+}
+
+static int toml_broadcast(toml_table_t * table,
+ struct ipcp_config * conf)
+{
+ (void) table;
+ (void) conf;
+
+ /* Nothing to do here. */
+
+ return 0;
+}
+
+static int toml_routing(toml_table_t * table,
+ struct dt_config * conf)
+{
+ toml_datum_t routing;
+
+ routing = toml_string_in(table, "routing");
+ if (routing.ok) {
+ if (strcmp(routing.u.s, "link-state") == 0)
+ conf->routing_type = ROUTING_LINK_STATE;
+ else if (strcmp(routing.u.s, "lfa") == 0)
+ conf->routing_type = ROUTING_LINK_STATE_LFA;
+ else if (strcmp(routing.u.s, "ecmp") == 0)
+ conf->routing_type = ROUTING_LINK_STATE_ECMP;
+ else
+ conf->routing_type = ROUTING_INVALID;
+ free(routing.u.s);
+ }
+
+ if (conf->routing_type == ROUTING_INVALID)
+ return -1;
+
+ return 0;
+}
+
+static int toml_addr_auth(toml_table_t * table,
+ struct uni_config * conf)
+{
+ toml_datum_t addr_auth;
+
+ addr_auth = toml_string_in(table, "addr-auth");
+ if (addr_auth.ok) {
+ if (strcmp(addr_auth.u.s, "flat") == 0)
+ conf->addr_auth_type = ADDR_AUTH_FLAT_RANDOM;
+ else
+ conf->addr_auth_type = ADDR_AUTH_INVALID;
+ free(addr_auth.u.s);
+ }
+
+ if (conf->addr_auth_type == ADDR_AUTH_INVALID)
+ return -1;
+
+ return 0;
+}
+
+static int toml_congestion(toml_table_t * table,
+ struct uni_config * conf)
+{
+ toml_datum_t congestion;
+
+ congestion = toml_string_in(table, "congestion");
+ if (congestion.ok) {
+ if (strcmp(congestion.u.s, "none") == 0)
+ conf->cong_avoid = CA_NONE;
+ else if (strcmp(congestion.u.s, "lfa") == 0)
+ conf->cong_avoid = CA_MB_ECN;
+ else
+ conf->cong_avoid = CA_INVALID;
+ free(congestion.u.s);
+
+ }
+
+ if (conf->cong_avoid == CA_INVALID)
+ return -1;
+
+ return 0;
+}
+
+static int toml_dt(toml_table_t * table,
+ struct dt_config * conf)
+{
+ toml_datum_t addr;
+ toml_datum_t eid;
+ toml_datum_t ttl;
+
+ addr = toml_int_in(table, "addr_size");
+ if (addr.ok)
+ conf->addr_size = addr.u.i;
+
+ eid = toml_int_in(table, "eid_size");
+ if (eid.ok)
+ conf->eid_size = eid.u.i;
+
+ ttl = toml_int_in(table, "max_ttl");
+ if (ttl.ok)
+ conf->max_ttl = ttl.u.i;
+
+ if (toml_routing(table, conf) < 0) {
+ log_err("Invalid routing option.");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int toml_unicast(toml_table_t * table,
+ struct ipcp_config * conf)
+{
+
+
+ *conf = uni_default_conf;
+
+ if (toml_hash(table, &conf->layer_info) < 0)
+ return -1;
+
+ if (toml_dt(table, &conf->unicast.dt) < 0) {
+ log_err("Invalid DT configuration.");
+ return -1;
+ }
+
+ if (toml_addr_auth(table, &conf->unicast) < 0) {
+ log_err("Invalid address authority");
+ return -1;
+ }
+
+ if (toml_congestion(table, &conf->unicast) < 0) {
+ log_err("Invalid congestion avoidance algorithm.");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int toml_autobind(toml_table_t * table,
+ pid_t pid,
+ const char * name,
+ const char * layer)
+{
+ toml_datum_t autobind;
+
+ autobind = toml_bool_in(table, "autobind");
+ if (!autobind.ok)
+ return 0;
+
+ if (bind_process(pid, name) < 0) {
+ log_err("Failed to bind IPCP process %d to %s.", pid, name);
+ return -1;
+ }
+
+ if (layer != NULL && bind_process(pid, layer) < 0) {
+ log_err("Failed to bind IPCP process %d to %s.", pid, layer);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int toml_register(toml_table_t * table,
+ pid_t pid)
+{
+ toml_array_t * reg;
+ int i;
+ int ret = 0;
+
+ reg = toml_array_in(table, "reg");
+ if (reg == NULL)
+ return 0;
+
+ for (i = 0; ret == 0; i++) {
+ toml_datum_t name;
+
+ name = toml_string_at(reg, i);
+ if (!name.ok)
+ break;
+
+ log_dbg("Registering %s in %d", name.u.s, pid);
+
+ ret = name_create(name.u.s, LB_SPILL);
+ if (ret < 0 && ret != -ENAME) {
+ free(name.u.s);
+ break;
+ }
+
+ ret = name_reg(name.u.s, pid);
+ free(name.u.s);
+ }
+
+ return ret;
+}
+
+static int toml_connect(toml_table_t * table,
+ pid_t pid)
+{
+ toml_array_t * conn;
+ int i;
+ int ret = 0;
+
+ conn = toml_array_in(table, "conn");
+ if (conn == NULL)
+ return 0;
+
+ for (i=0; ret == 0; i++) {
+ toml_datum_t dst;
+ qosspec_t qs = qos_raw;
+
+ dst = toml_string_at(conn, i);
+ if (!dst.ok)
+ break;
+
+ log_dbg("Connecting %d to %s", pid, dst.u.s);
+
+ ret = connect_ipcp(pid, dst.u.s, MGMT_COMP, qs);
+ if (ret == 0)
+ ret = connect_ipcp(pid, dst.u.s, DT_COMP, qs);
+
+ free(dst.u.s);
+ }
+
+ return ret;
+}
+
+static int toml_ipcp(toml_table_t * table,
+ const char * name,
+ struct ipcp_config * conf)
+{
+ toml_datum_t bootstrap;
+ toml_datum_t enrol;
+ pid_t pid;
+ int ret;
+
+ log_dbg("Found IPCP %s in configuration file.", name);
+
+ pid = create_ipcp(name, conf->type);
+ if (pid < 0) {
+ log_err("Failed to create IPCP %s.", name);
+ return -1;
+ }
+
+ bootstrap = toml_string_in(table, "bootstrap");
+ enrol = toml_string_in(table, "enrol");
+
+ if (bootstrap.ok && enrol.ok) {
+ log_err("Ignoring bootstrap for IPCP %s.", name);
+ free(bootstrap.u.s);
+ bootstrap.ok = false;
+ }
+
+ if (!bootstrap.ok && !enrol.ok) {
+ log_dbg("Nothing more to do for %s.", name);
+ return 0;
+ }
+
+ if (enrol.ok) {
+ char layer[LAYER_NAME_SIZE + 1];
+ ret = enroll_ipcp(pid, enrol.u.s);
+ free(enrol.u.s);
+ if (ret < 0) {
+ log_err("Failed to enrol %s.", name);
+ return -1;
+ }
+
+ if (get_layer_for_ipcp(pid, layer) < 0)
+ return -1;
+
+ if (toml_autobind(table, pid, name, layer))
+ return -1;
+
+ if (toml_register(table, pid) < 0) {
+ log_err("Failed to register names.");
+ return -1;
+ }
+
+ if (toml_connect(table, pid) < 0) {
+ log_err("Failed to register names.");
+ return -1;
+ }
+
+ return 0;
+ }
+
+ assert(bootstrap.ok);
+
+ if (strlen(bootstrap.u.s) > LAYER_NAME_SIZE) {
+ log_err("Layer name too long: %s", bootstrap.u.s);
+ free(bootstrap.u.s);
+ return -1;
+ }
+
+ switch (conf->type) {
+ case IPCP_LOCAL:
+ ret = toml_local(table, conf);
+ break;
+ case IPCP_ETH_DIX:
+ ret = toml_eth_dix(table, conf);
+ break;
+ case IPCP_ETH_LLC:
+ ret = toml_eth_llc(table, conf);
+ break;
+ case IPCP_UDP:
+ ret = toml_udp(table, conf);
+ break;
+ case IPCP_BROADCAST:
+ ret = toml_broadcast(table, conf);
+ break;
+ case IPCP_UNICAST:
+ ret = toml_unicast(table, conf);
+ break;
+ default:
+ log_err("Invalid IPCP type");
+ ret = -1;
+ }
+
+ if (ret < 0)
+ return -1;
+
+ strcpy(conf->layer_info.layer_name, bootstrap.u.s);
+ free(bootstrap.u.s);
+
+ if (bootstrap_ipcp(pid, conf) < 0)
+ return -1;
+
+ if (toml_autobind(table, pid, name, conf->layer_info.layer_name) < 0)
+ return -1;
+
+ if (toml_register(table, pid) < 0) {
+ log_err("Failed to register names.");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int toml_ipcp_list(toml_table_t * table,
+ enum ipcp_type type)
+{
+ int i = 0;
+ int ret = 0;
+
+ for (i = 0; ret == 0; i++) {
+ const char * key;
+ struct ipcp_config conf;
+
+ key = toml_key_in(table, i);
+ if (key == NULL)
+ break;
+
+ memset(&conf, 0, sizeof(conf));
+
+ conf.type = type;
+
+ ret = toml_ipcp(toml_table_in(table, key), key, &conf);
+ }
+
+ return ret;
+}
+
+static int args_to_argv(const char * args,
+ char *** argv)
+{
+ char * tok;
+ char * str;
+ int argc = 0;
+
+ str = (char *) args;
+
+ tok = strtok(str, " ");
+ while (tok != NULL) {
+ tok = strtok(NULL, " ");
+ argc++;
+ }
+
+ *argv = malloc((argc + 1) * sizeof(**argv));
+ if (*argv == NULL)
+ goto fail_malloc;
+
+ argc = 0;
+ tok = strtok(str, " ");
+ while (tok != NULL) {
+ (*argv)[argc] = malloc((strlen(tok) + 1) * sizeof(***argv));
+ if (*argv[argc] == NULL)
+ goto fail_malloc2;
+
+ strcpy((*argv)[argc++], tok);
+ tok = strtok(NULL, " ");
+ }
+
+ (*argv)[argc] = NULL;
+
+ return argc;
+
+ fail_malloc2:
+ argvfree(*argv);
+ fail_malloc:
+ return -1;
+
+}
+
+static int toml_prog(char * prog,
+ const char * args,
+ const char * name)
+{
+ uint16_t flags = 0;
+ int argc = 0;
+ char ** argv;
+ int ret;
+
+ if (args != NULL)
+ flags |= BIND_AUTO;
+
+ argc = args_to_argv(args, &argv);
+ if (argc < 0) {
+ log_err("Failed to parse arguments: %s", args);
+ return -1;
+ }
+
+ ret = bind_program(prog, name, flags, argc, argv);
+ if (ret < 0)
+ log_err("Failed to bind program %s %s for name %s.",
+ prog, args, name);
+
+ argvfree(argv);
+
+ return ret;
+}
+
+static int toml_prog_list(toml_array_t * progs,
+ toml_array_t * args,
+ const char * name)
+{
+ int ret = 0;
+ int i;
+
+ for (i = 0; ret == 0; i++) {
+ toml_datum_t prog;
+ toml_datum_t arg;
+
+ prog = toml_string_at(progs, i);
+ if (!prog.ok)
+ break;
+
+ if (args == NULL) {
+ ret = toml_prog(prog.u.s, NULL, name);
+ } else {
+ arg = toml_string_at(args, i);
+ if (!arg.ok) {
+ args = NULL; /* no more arguments in list. */
+ assert(arg.u.s == NULL);
+ }
+
+ ret = toml_prog(prog.u.s, arg.u.s, name);
+
+ if (arg.ok)
+ free(arg.u.s);
+ }
+
+ free(prog.u.s);
+ }
+
+ return ret;
+}
+
+static int toml_name(toml_table_t * table,
+ const char * name)
+{
+ toml_array_t * progs;
+ toml_array_t * args;
+ toml_datum_t lb;
+ enum pol_balance lb_pol = LB_SPILL;
+
+ log_dbg("Found service name %s in configuration file.", name);
+
+ lb = toml_string_in(table, "lb");
+ if (lb.ok) {
+ if (strcmp(lb.u.s, "spill") == 0)
+ lb_pol = LB_SPILL;
+ else if (strcmp(lb.u.s, "round-robin") == 0)
+ lb_pol = LB_RR;
+ else
+ lb_pol = LB_INVALID;
+ free(lb.u.s);
+ }
+
+ if (lb_pol == LB_INVALID) {
+ log_err("Invalid load-balancing policy for %s.", name);
+ return -1;
+ }
+
+ if (name_create(name, lb_pol) < 0) {
+ log_err("Failed to create name %s.", name);
+ return -1;
+ }
+
+ progs = toml_array_in(table, "prog");
+ if (progs == NULL)
+ return 0;
+
+ args = toml_array_in(table, "args");
+ if (toml_prog_list(progs, args, name) < 0)
+ return -1;
+
+ return 0;
+}
+
+static int toml_name_list(toml_table_t * table)
+{
+ int i = 0;
+ int ret = 0;
+
+ for (i = 0; ret == 0; i++) {
+ const char * key;
+
+ key = toml_key_in(table, i);
+ if (key == NULL)
+ break;
+
+ ret = toml_name(toml_table_in(table, key), key);
+ }
+
+ return ret;
+ return 0;
+}
+
+static int toml_toplevel(toml_table_t * table,
+ const char * key)
+{
+ toml_table_t * subtable;
+
+ subtable = toml_table_in(table, key);
+
+ if (strcmp(key, "local") == 0)
+ return toml_ipcp_list(subtable, IPCP_LOCAL);
+ else if (strcmp(key, "eth-dix") == 0)
+ return toml_ipcp_list(subtable, IPCP_ETH_DIX);
+ else if (strcmp(key, "eth-llc") == 0)
+ return toml_ipcp_list(subtable, IPCP_ETH_LLC);
+ else if (strcmp(key, "udp") == 0)
+ return toml_ipcp_list(subtable, IPCP_UDP);
+ else if (strcmp(key, "broadcast") == 0)
+ return toml_ipcp_list(subtable, IPCP_BROADCAST);
+ else if (strcmp(key, "unicast") == 0)
+ return toml_ipcp_list(subtable, IPCP_UNICAST);
+ else if (strcmp(key, "name") == 0)
+ return toml_name_list(subtable);
+
+ log_err("Unkown toplevel key: %s.", key);
+ return -1;
+}
+
+static int toml_load(toml_table_t * table)
+{
+ int i = 0;
+ int ret = 0;
+
+ for (i = 0; ret == 0; i++) {
+ const char * key;
+
+ key = toml_key_in(table, i);
+ if (key == NULL)
+ break;
+
+ ret = toml_toplevel(table, key);
+ }
+
+ return ret;
+}
+
+static int toml_cfg(FILE * fp)
+{
+ toml_table_t * table;
+ char errbuf[ERRBUFSZ + 1];
+
+ assert(fp != NULL);
+
+ table = toml_parse_file(fp, errbuf, sizeof(errbuf));
+ if (table == NULL) {
+ log_err("Failed to parse config file: %s.", errbuf);
+ goto fail_parse;
+ }
+
+ if (toml_load(table) < 0) {
+ log_err("Failed to load configuration.");
+ goto fail_load;
+ }
+
+ toml_free(table);
+
+ return 0;
+
+ fail_load:
+ toml_free(table);
+ fail_parse:
+ return -1;
+}
+
+int irm_configure(const char * path)
+{
+ FILE * fp;
+ char * rp;
+
+ if (path == NULL)
+ return 0;
+
+ rp = realpath(path, NULL);
+ if (rp == NULL) {
+ log_warn("Failed to resolve path for %s", path);
+ return 0;
+ }
+
+ log_info("Reading configuration from file %s", rp);
+
+ fp = fopen(rp, "r");
+ if (fp == NULL) {
+ log_err("Failed to open config file: %s\n", strerror(errno));
+ goto fail_fopen;
+ }
+
+ if (toml_cfg(fp) < 0) {
+ log_err("Failed to load config file.");
+ goto fail_cfg;
+ }
+
+ fclose(fp);
+ free(rp);
+
+ return 0;
+
+ fail_cfg:
+ fclose(fp);
+ fail_fopen:
+ free(rp);
+ return -1;
+}
+
+#endif /* HAVE_TOML */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-28 17:51:23 +0000