--- /dev/null
+/*
+ * luci-rpcd - LuCI UBUS RPC server
+ *
+ * Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <fcntl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <arpa/inet.h>
+
+#include "luci2.h"
+
+static struct blob_buf buf;
+static struct uci_context *cursor;
+
+
+static int
+rpc_errno_status(void)
+{
+ switch (errno)
+ {
+ case EACCES:
+ return UBUS_STATUS_PERMISSION_DENIED;
+
+ case ENOTDIR:
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ case ENOENT:
+ return UBUS_STATUS_NOT_FOUND;
+
+ case EINVAL:
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ default:
+ return UBUS_STATUS_UNKNOWN_ERROR;
+ }
+}
+
+static void
+log_read(FILE *log, int logsize)
+{
+ int len;
+ char *logbuf;
+
+ if (logsize == 0)
+ logsize = RPC_LUCI2_DEF_LOGSIZE;
+
+ len = (logsize > RPC_LUCI2_MAX_LOGSIZE) ? RPC_LUCI2_MAX_LOGSIZE : logsize;
+ logbuf = blobmsg_alloc_string_buffer(&buf, "log", len + 1);
+
+ if (!logbuf)
+ return;
+
+ while (logsize > RPC_LUCI2_MAX_LOGSIZE)
+ {
+ len = logsize % RPC_LUCI2_MAX_LOGSIZE;
+
+ if (len == 0)
+ len = RPC_LUCI2_MAX_LOGSIZE;
+
+ fread(logbuf, 1, len, log);
+ logsize -= len;
+ }
+
+ len = fread(logbuf, 1, logsize, log);
+ *(logbuf + len) = 0;
+
+ blobmsg_add_string_buffer(&buf);
+}
+
+static int
+rpc_luci2_system_log(struct ubus_context *ctx, struct ubus_object *obj,
+ struct ubus_request_data *req, const char *method,
+ struct blob_attr *msg)
+{
+ FILE *log;
+ int logsize = 0;
+ const char *logfile = NULL;
+ struct stat st;
+ struct uci_package *p;
+ struct uci_element *e;
+ struct uci_section *s;
+ struct uci_ptr ptr = { .package = "system" };
+
+ uci_load(cursor, ptr.package, &p);
+
+ if (!p)
+ return UBUS_STATUS_NOT_FOUND;
+
+ uci_foreach_element(&p->sections, e)
+ {
+ s = uci_to_section(e);
+
+ if (strcmp(s->type, "system"))
+ continue;
+
+ ptr.o = NULL;
+ ptr.option = "log_type";
+ ptr.section = e->name;
+ uci_lookup_ptr(cursor, &ptr, NULL, true);
+ break;
+ }
+
+ if (ptr.o && ptr.o->type == UCI_TYPE_STRING &&
+ !strcmp(ptr.o->v.string, "file"))
+ {
+ ptr.o = NULL;
+ ptr.option = "log_file";
+ uci_lookup_ptr(cursor, &ptr, NULL, true);
+
+ if (ptr.o && ptr.o->type == UCI_TYPE_STRING)
+ logfile = ptr.o->v.string;
+ else
+ logfile = "/var/log/messages";
+
+ if (stat(logfile, &st) || !(log = fopen(logfile, "r")))
+ goto fail;
+
+ logsize = st.st_size;
+ }
+ else
+ {
+ ptr.o = NULL;
+ ptr.option = "log_size";
+ uci_lookup_ptr(cursor, &ptr, NULL, true);
+
+ if (ptr.o && ptr.o->type == UCI_TYPE_STRING)
+ logsize = atoi(ptr.o->v.string) * 1024;
+
+ if (!(log = popen("logread", "r")))
+ goto fail;
+ }
+
+ blob_buf_init(&buf, 0);
+
+ log_read(log, logsize);
+ fclose(log);
+
+ uci_unload(cursor, p);
+ ubus_send_reply(ctx, req, buf.head);
+ return 0;
+
+fail:
+ uci_unload(cursor, p);
+ return rpc_errno_status();
+}
+
+static int
+rpc_luci2_system_dmesg(struct ubus_context *ctx, struct ubus_object *obj,
+ struct ubus_request_data *req, const char *method,
+ struct blob_attr *msg)
+{
+ FILE *log;
+
+ if (!(log = popen("dmesg", "r")))
+ return rpc_errno_status();
+
+ blob_buf_init(&buf, 0);
+
+ log_read(log, RPC_LUCI2_MAX_LOGSIZE);
+ fclose(log);
+
+ ubus_send_reply(ctx, req, buf.head);
+ return 0;
+}
+
+
+static FILE *
+dnsmasq_leasefile(void)
+{
+ FILE *leases = NULL;
+ struct uci_package *p;
+ struct uci_element *e;
+ struct uci_section *s;
+ struct uci_ptr ptr = {
+ .package = "dhcp",
+ .section = NULL,
+ .option = "leasefile"
+ };
+
+ uci_load(cursor, ptr.package, &p);
+
+ if (!p)
+ return NULL;
+
+ uci_foreach_element(&p->sections, e)
+ {
+ s = uci_to_section(e);
+
+ if (strcmp(s->type, "dnsmasq"))
+ continue;
+
+ ptr.section = e->name;
+ uci_lookup_ptr(cursor, &ptr, NULL, true);
+ break;
+ }
+
+ if (ptr.o && ptr.o->type == UCI_TYPE_STRING)
+ leases = fopen(ptr.o->v.string, "r");
+
+ uci_unload(cursor, p);
+
+ return leases;
+}
+
+static int
+rpc_luci2_network_leases(struct ubus_context *ctx, struct ubus_object *obj,
+ struct ubus_request_data *req, const char *method,
+ struct blob_attr *msg)
+{
+ FILE *leases;
+ void *c, *d;
+ char line[128];
+ char *ts, *mac, *addr, *name;
+ time_t now = time(NULL);
+
+ blob_buf_init(&buf, 0);
+ c = blobmsg_open_array(&buf, "leases");
+
+ leases = dnsmasq_leasefile();
+
+ if (!leases)
+ goto out;
+
+ while (fgets(line, sizeof(line) - 1, leases))
+ {
+ ts = strtok(line, " \t");
+ mac = strtok(NULL, " \t");
+ addr = strtok(NULL, " \t");
+ name = strtok(NULL, " \t");
+
+ if (!ts || !mac || !addr || !name)
+ continue;
+
+ if (strchr(addr, ':'))
+ continue;
+
+ d = blobmsg_open_table(&buf, NULL);
+
+ blobmsg_add_u32(&buf, "expires", atoi(ts) - now);
+ blobmsg_add_string(&buf, "macaddr", mac);
+ blobmsg_add_string(&buf, "ipaddr", addr);
+
+ if (strcmp(name, "*"))
+ blobmsg_add_string(&buf, "hostname", name);
+
+ blobmsg_close_table(&buf, d);
+ }
+
+ fclose(leases);
+
+out:
+ blobmsg_close_array(&buf, c);
+ ubus_send_reply(ctx, req, buf.head);
+
+ return 0;
+}
+
+static int
+rpc_luci2_network_leases6(struct ubus_context *ctx, struct ubus_object *obj,
+ struct ubus_request_data *req, const char *method,
+ struct blob_attr *msg)
+{
+ FILE *leases;
+ void *c, *d;
+ char line[128];
+ char *ts, *mac, *addr, *name, *duid;
+ time_t now = time(NULL);
+
+ blob_buf_init(&buf, 0);
+ c = blobmsg_open_array(&buf, "leases");
+
+ leases = fopen("/tmp/hosts/6relayd", "r");
+
+ if (leases)
+ {
+ while (fgets(line, sizeof(line) - 1, leases))
+ {
+ if (strncmp(line, "# ", 2))
+ continue;
+
+ strtok(line + 2, " \t"); /* iface */
+
+ duid = strtok(NULL, " \t");
+
+ strtok(NULL, " \t"); /* iaid */
+
+ name = strtok(NULL, " \t");
+ ts = strtok(NULL, " \t");
+
+ strtok(NULL, " \t"); /* id */
+ strtok(NULL, " \t"); /* length */
+
+ addr = strtok(NULL, " \t\n");
+
+ if (!addr)
+ continue;
+
+ d = blobmsg_open_table(&buf, NULL);
+
+ blobmsg_add_u32(&buf, "expires", atoi(ts) - now);
+ blobmsg_add_string(&buf, "duid", duid);
+ blobmsg_add_string(&buf, "ip6addr", addr);
+
+ if (strcmp(name, "-"))
+ blobmsg_add_string(&buf, "hostname", name);
+
+ blobmsg_close_array(&buf, d);
+ }
+
+ fclose(leases);
+ }
+ else
+ {
+ leases = dnsmasq_leasefile();
+
+ if (!leases)
+ goto out;
+
+ while (fgets(line, sizeof(line) - 1, leases))
+ {
+ ts = strtok(line, " \t");
+ mac = strtok(NULL, " \t");
+ addr = strtok(NULL, " \t");
+ name = strtok(NULL, " \t");
+ duid = strtok(NULL, " \t\n");
+
+ if (!ts || !mac || !addr || !duid)
+ continue;
+
+ if (!strchr(addr, ':'))
+ continue;
+
+ d = blobmsg_open_table(&buf, NULL);
+
+ blobmsg_add_u32(&buf, "expires", atoi(ts) - now);
+ blobmsg_add_string(&buf, "macaddr", mac);
+ blobmsg_add_string(&buf, "ip6addr", addr);
+
+ if (strcmp(name, "*"))
+ blobmsg_add_string(&buf, "hostname", name);
+
+ if (strcmp(duid, "*"))
+ blobmsg_add_string(&buf, "duid", name);
+
+ blobmsg_close_table(&buf, d);
+ }
+
+ fclose(leases);
+ }
+
+out:
+ blobmsg_close_array(&buf, c);
+ ubus_send_reply(ctx, req, buf.head);
+
+ return 0;
+}
+
+static int
+rpc_luci2_network_ct_count(struct ubus_context *ctx, struct ubus_object *obj,
+ struct ubus_request_data *req, const char *method,
+ struct blob_attr *msg)
+{
+ FILE *f;
+ char line[128];
+
+ blob_buf_init(&buf, 0);
+
+ if ((f = fopen("/proc/sys/net/netfilter/nf_conntrack_count", "r")) != NULL)
+ {
+ if (fgets(line, sizeof(line) - 1, f))
+ blobmsg_add_u32(&buf, "count", atoi(line));
+
+ fclose(f);
+ }
+
+ if ((f = fopen("/proc/sys/net/netfilter/nf_conntrack_max", "r")) != NULL)
+ {
+ if (fgets(line, sizeof(line) - 1, f))
+ blobmsg_add_u32(&buf, "limit", atoi(line));
+
+ fclose(f);
+ }
+
+ ubus_send_reply(ctx, req, buf.head);
+
+ return 0;
+}
+
+static int
+rpc_luci2_network_ct_table(struct ubus_context *ctx, struct ubus_object *obj,
+ struct ubus_request_data *req, const char *method,
+ struct blob_attr *msg)
+{
+ FILE *f;
+ int i;
+ void *c, *d;
+ char *p, line[512];
+ bool seen[6];
+
+ blob_buf_init(&buf, 0);
+ c = blobmsg_open_array(&buf, "entries");
+
+ if ((f = fopen("/proc/net/nf_conntrack", "r")) != NULL)
+ {
+ while (fgets(line, sizeof(line) - 1, f))
+ {
+ d = blobmsg_open_table(&buf, NULL);
+ memset(seen, 0, sizeof(seen));
+
+ for (i = 0, p = strtok(line, " "); p; i++, p = strtok(NULL, " "))
+ {
+ if (i == 0)
+ blobmsg_add_u8(&buf, "ipv6", !strcmp(p, "ipv6"));
+ else if (i == 3)
+ blobmsg_add_u32(&buf, "protocol", atoi(p));
+ else if (i == 4)
+ blobmsg_add_u32(&buf, "expires", atoi(p));
+ else if (i >= 5)
+ {
+ if (*p == '[')
+ continue;
+
+ if (!seen[0] && !strncmp(p, "src=", 4))
+ {
+ blobmsg_add_string(&buf, "src", p + 4);
+ seen[0] = true;
+ }
+ else if (!seen[1] && !strncmp(p, "dst=", 4))
+ {
+ blobmsg_add_string(&buf, "dest", p + 4);
+ seen[1] = true;
+ }
+ else if (!seen[2] && !strncmp(p, "sport=", 6))
+ {
+ blobmsg_add_u32(&buf, "sport", atoi(p + 6));
+ seen[2] = true;
+ }
+ else if (!seen[3] && !strncmp(p, "dport=", 6))
+ {
+ blobmsg_add_u32(&buf, "dport", atoi(p + 6));
+ seen[3] = true;
+ }
+ else if (!strncmp(p, "packets=", 8))
+ {
+ blobmsg_add_u32(&buf,
+ seen[4] ? "tx_packets" : "rx_packets",
+ atoi(p + 8));
+ seen[4] = true;
+ }
+ else if (!strncmp(p, "bytes=", 6))
+ {
+ blobmsg_add_u32(&buf,
+ seen[5] ? "tx_bytes" : "rx_bytes",
+ atoi(p + 6));
+ seen[5] = true;
+ }
+ }
+ }
+
+ blobmsg_close_table(&buf, d);
+ }
+
+ fclose(f);
+ }
+
+ blobmsg_close_array(&buf, c);
+ ubus_send_reply(ctx, req, buf.head);
+
+ return 0;
+}
+
+static int
+rpc_luci2_network_arp_table(struct ubus_context *ctx, struct ubus_object *obj,
+ struct ubus_request_data *req, const char *method,
+ struct blob_attr *msg)
+{
+ FILE *f;
+ void *c, *d;
+ char *addr, *mac, *dev, line[128];
+
+ blob_buf_init(&buf, 0);
+ c = blobmsg_open_array(&buf, "entries");
+
+ if ((f = fopen("/proc/net/arp", "r")) != NULL)
+ {
+ /* skip header line */
+ fgets(line, sizeof(line) - 1, f);
+
+ while (fgets(line, sizeof(line) - 1, f))
+ {
+ addr = strtok(line, " \t");
+
+ strtok(NULL, " \t"); /* HW type */
+ strtok(NULL, " \t"); /* Flags */
+
+ mac = strtok(NULL, " \t");
+
+ strtok(NULL, " \t"); /* Mask */
+
+ dev = strtok(NULL, " \t\n");
+
+ if (!dev)
+ continue;
+
+ d = blobmsg_open_table(&buf, NULL);
+ blobmsg_add_string(&buf, "ipaddr", addr);
+ blobmsg_add_string(&buf, "macaddr", mac);
+ blobmsg_add_string(&buf, "device", dev);
+ blobmsg_close_table(&buf, d);
+ }
+
+ fclose(f);
+ }
+
+ blobmsg_close_array(&buf, c);
+ ubus_send_reply(ctx, req, buf.head);
+
+ return 0;
+}
+
+static void
+put_hexaddr(const char *name, const char *s, const char *m)
+{
+ int bits;
+ struct in_addr a;
+ char as[sizeof("255.255.255.255/32\0")];
+
+ a.s_addr = strtoul(s, NULL, 16);
+ inet_ntop(AF_INET, &a, as, sizeof(as));
+
+ if (m)
+ {
+ for (a.s_addr = ntohl(strtoul(m, NULL, 16)), bits = 0;
+ a.s_addr & 0x80000000;
+ a.s_addr <<= 1)
+ bits++;
+
+ sprintf(as + strlen(as), "/%u", bits);
+ }
+
+ blobmsg_add_string(&buf, name, as);
+}
+
+static int
+rpc_luci2_network_routes(struct ubus_context *ctx, struct ubus_object *obj,
+ struct ubus_request_data *req, const char *method,
+ struct blob_attr *msg)
+{
+ FILE *routes;
+ void *c, *d;
+ char *dst, *dmask, *next, *metric, *device;
+ char line[256];
+ unsigned int n;
+
+ if (!(routes = fopen("/proc/net/route", "r")))
+ return rpc_errno_status();
+
+ blob_buf_init(&buf, 0);
+ c = blobmsg_open_array(&buf, "routes");
+
+ /* skip header line */
+ fgets(line, sizeof(line) - 1, routes);
+
+ while (fgets(line, sizeof(line) - 1, routes))
+ {
+ device = strtok(line, "\t ");
+ dst = strtok(NULL, "\t ");
+ next = strtok(NULL, "\t ");
+
+ strtok(NULL, "\t "); /* flags */
+ strtok(NULL, "\t "); /* refcount */
+ strtok(NULL, "\t "); /* usecount */
+
+ metric = strtok(NULL, "\t ");
+ dmask = strtok(NULL, "\t ");
+
+ if (!dmask)
+ continue;
+
+ d = blobmsg_open_table(&buf, NULL);
+
+ put_hexaddr("target", dst, dmask);
+ put_hexaddr("nexthop", next, NULL);
+
+ n = strtoul(metric, NULL, 10);
+ blobmsg_add_u32(&buf, "metric", n);
+
+ blobmsg_add_string(&buf, "device", device);
+
+ blobmsg_close_table(&buf, d);
+ }
+
+ blobmsg_close_array(&buf, c);
+ fclose(routes);
+
+ ubus_send_reply(ctx, req, buf.head);
+ return 0;
+}
+
+static void
+put_hex6addr(const char *name, const char *s, const char *m)
+{
+ int i;
+ struct in6_addr a;
+ char as[INET6_ADDRSTRLEN + sizeof("/128")];
+
+#define hex(x) \
+ (((x) <= '9') ? ((x) - '0') : \
+ (((x) <= 'F') ? ((x) - 'A' + 10) : \
+ ((x) - 'a' + 10)))
+
+ for (i = 0; i < 16; i++, s += 2)
+ a.s6_addr[i] = (16 * hex(*s)) + hex(*(s+1));
+
+ inet_ntop(AF_INET6, &a, as, sizeof(as));
+
+ if (m)
+ sprintf(as + strlen(as), "/%lu", strtoul(m, NULL, 16));
+
+ blobmsg_add_string(&buf, name, as);
+}
+
+static int
+rpc_luci2_network_routes6(struct ubus_context *ctx, struct ubus_object *obj,
+ struct ubus_request_data *req, const char *method,
+ struct blob_attr *msg)
+{
+ FILE *routes;
+ void *c, *d;
+ char *src, *smask, *dst, *dmask, *next, *metric, *flags, *device;
+ char line[256];
+ unsigned int n;
+
+ if (!(routes = fopen("/proc/net/ipv6_route", "r")))
+ return rpc_errno_status();
+
+ blob_buf_init(&buf, 0);
+ c = blobmsg_open_array(&buf, "routes");
+
+ while (fgets(line, sizeof(line) - 1, routes))
+ {
+ dst = strtok(line, " ");
+ dmask = strtok(NULL, " ");
+ src = strtok(NULL, " ");
+ smask = strtok(NULL, " ");
+ next = strtok(NULL, " ");
+ metric = strtok(NULL, " ");
+
+ strtok(NULL, " "); /* refcount */
+ strtok(NULL, " "); /* usecount */
+
+ flags = strtok(NULL, " ");
+ device = strtok(NULL, " \n");
+
+ if (!device)
+ continue;
+
+ n = strtoul(flags, NULL, 16);
+
+ if (!(n & 1))
+ continue;
+
+ d = blobmsg_open_table(&buf, NULL);
+
+ put_hex6addr("target", dst, dmask);
+ put_hex6addr("source", src, smask);
+ put_hex6addr("nexthop", next, NULL);
+
+ n = strtoul(metric, NULL, 16);
+ blobmsg_add_u32(&buf, "metric", n);
+
+ blobmsg_add_string(&buf, "device", device);
+
+ blobmsg_close_table(&buf, d);
+ }
+
+ blobmsg_close_array(&buf, c);
+ fclose(routes);
+
+ ubus_send_reply(ctx, req, buf.head);
+ return 0;
+}
+
+
+int rpc_luci2_api_init(struct ubus_context *ctx)
+{
+ int rv = 0;
+
+ static const struct ubus_method luci2_system_methods[] = {
+ UBUS_METHOD_NOARG("syslog", rpc_luci2_system_log),
+ UBUS_METHOD_NOARG("dmesg", rpc_luci2_system_dmesg),
+ };
+
+ static struct ubus_object_type luci2_system_type =
+ UBUS_OBJECT_TYPE("luci-rpc-luci2-system", luci2_system_methods);
+
+ static struct ubus_object system_obj = {
+ .name = "luci2.system",
+ .type = &luci2_system_type,
+ .methods = luci2_system_methods,
+ .n_methods = ARRAY_SIZE(luci2_system_methods),
+ };
+
+
+ static const struct ubus_method luci2_network_methods[] = {
+ UBUS_METHOD_NOARG("conntrack_count", rpc_luci2_network_ct_count),
+ UBUS_METHOD_NOARG("conntrack_table", rpc_luci2_network_ct_table),
+ UBUS_METHOD_NOARG("arp_table", rpc_luci2_network_arp_table),
+ UBUS_METHOD_NOARG("dhcp_leases", rpc_luci2_network_leases),
+ UBUS_METHOD_NOARG("dhcp6_leases", rpc_luci2_network_leases6),
+ UBUS_METHOD_NOARG("routes", rpc_luci2_network_routes),
+ UBUS_METHOD_NOARG("routes6", rpc_luci2_network_routes6),
+ };
+
+ static struct ubus_object_type luci2_network_type =
+ UBUS_OBJECT_TYPE("luci-rpc-luci2-network", luci2_network_methods);
+
+ static struct ubus_object network_obj = {
+ .name = "luci2.network",
+ .type = &luci2_network_type,
+ .methods = luci2_network_methods,
+ .n_methods = ARRAY_SIZE(luci2_network_methods),
+ };
+
+ cursor = uci_alloc_context();
+
+ if (!cursor)
+ return UBUS_STATUS_UNKNOWN_ERROR;
+
+ rv |= ubus_add_object(ctx, &system_obj);
+ rv |= ubus_add_object(ctx, &network_obj);
+
+ return rv;
+}
projects / project / rpcd.git / commitdiff