From 7c61c535becbb04b9babc09d4e6cfe05d94ab19f Mon Sep 17 00:00:00 2001 From: Jo-Philipp Wich Date: Sat, 8 Jun 2013 17:56:02 +0200 Subject: [PATCH] Add luci2 namespace to offer various backend methods required by the ui --- CMakeLists.txt | 2 +- luci2.c | 751 +++++++++++++++++++++++++++++++++++++++++++++++++ luci2.h | 31 ++ main.c | 2 + 4 files changed, 785 insertions(+), 1 deletion(-) create mode 100644 luci2.c create mode 100644 luci2.h diff --git a/CMakeLists.txt b/CMakeLists.txt index 3c34700..122e850 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -10,7 +10,7 @@ IF(APPLE) LINK_DIRECTORIES(/opt/local/lib) ENDIF() -ADD_EXECUTABLE(luci-rpcd main.c session.c file.c uci.c iwinfo.c) +ADD_EXECUTABLE(luci-rpcd main.c session.c file.c uci.c iwinfo.c luci2.c) TARGET_LINK_LIBRARIES(luci-rpcd ubox ubus uci iwinfo) SET(CMAKE_INSTALL_PREFIX /usr) diff --git a/luci2.c b/luci2.c new file mode 100644 index 0000000..3a74546 --- /dev/null +++ b/luci2.c @@ -0,0 +1,751 @@ +/* + * luci-rpcd - LuCI UBUS RPC server + * + * Copyright (C) 2013 Jo-Philipp Wich + * + * 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 +#include +#include +#include +#include +#include +#include + +#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; +} diff --git a/luci2.h b/luci2.h new file mode 100644 index 0000000..bcbdb41 --- /dev/null +++ b/luci2.h @@ -0,0 +1,31 @@ +/* + * luci-rpcd - LuCI UBUS RPC server + * + * Copyright (C) 2013 Jo-Philipp Wich + * + * 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. + */ + +#ifndef __RPC_LUCI2_H +#define __RPC_LUCI2_H + +#include +#include + +/* limit of log size buffer */ +#define RPC_LUCI2_MAX_LOGSIZE (128 * 1024) +#define RPC_LUCI2_DEF_LOGSIZE (16 * 1024) + +int rpc_luci2_api_init(struct ubus_context *ctx); + +#endif diff --git a/main.c b/main.c index ac5b8f8..11a7cdd 100644 --- a/main.c +++ b/main.c @@ -27,6 +27,7 @@ #include "file.h" #include "uci.h" #include "iwinfo.h" +#include "luci2.h" static struct ubus_context *ctx; @@ -64,6 +65,7 @@ int main(int argc, char **argv) rpc_file_api_init(ctx); rpc_uci_api_init(ctx); rpc_iwinfo_api_init(ctx); + rpc_luci2_api_init(ctx); uloop_run(); ubus_free(ctx);