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Add luci2 namespace to offer various backend methods required by the ui

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This commit is contained in:
Jo-Philipp Wich 2013-06-08 17:56:02 +02:00
parent bf838aaa2e
commit 7c61c535be
4 changed files with 785 additions and 1 deletions
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2
CMakeLists.txt
View file

@ -10,7 +10,7 @@ IF(APPLE)
LINK_DIRECTORIES(/opt/local/lib) LINK_DIRECTORIES(/opt/local/lib)
ENDIF() 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) TARGET_LINK_LIBRARIES(luci-rpcd ubox ubus uci iwinfo)
SET(CMAKE_INSTALL_PREFIX /usr) SET(CMAKE_INSTALL_PREFIX /usr)

751
luci2.c Normal file
View file

@ -0,0 +1,751 @@
/*
* 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;
}

31
luci2.h Normal file
View file

@ -0,0 +1,31 @@
/*
* 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.
*/
#ifndef __RPC_LUCI2_H
#define __RPC_LUCI2_H
#include <libubus.h>
#include <uci.h>
/* 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

2
main.c
View file

@ -27,6 +27,7 @@
#include "file.h" #include "file.h"
#include "uci.h" #include "uci.h"
#include "iwinfo.h" #include "iwinfo.h"
#include "luci2.h"
static struct ubus_context *ctx; static struct ubus_context *ctx;
@ -64,6 +65,7 @@ int main(int argc, char **argv)
rpc_file_api_init(ctx); rpc_file_api_init(ctx);
rpc_uci_api_init(ctx); rpc_uci_api_init(ctx);
rpc_iwinfo_api_init(ctx); rpc_iwinfo_api_init(ctx);
rpc_luci2_api_init(ctx);
uloop_run(); uloop_run();
ubus_free(ctx); ubus_free(ctx);