/*
- * luci-rpcd - LuCI UBUS RPC server
+ * rpcd - UBUS RPC server
*
- * Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
+ * Copyright (C) 2013-2014 Jo-Philipp Wich <jow@openwrt.org>
+ * Copyright (C) 2016 Luka Perkov <luka@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
#include <dirent.h>
#include <sys/stat.h>
#include <sys/wait.h>
+#include <libubus.h>
+#include <libubox/blobmsg.h>
+#include <libubox/md5.h>
+#include <libubox/ustream.h>
+#include <libubox/utils.h>
+
+#include <rpcd/plugin.h>
+
+/* limit of sys & proc files */
+#define RPC_FILE_MIN_SIZE (128)
+
+/* limit of regular files and command output data */
+#define RPC_FILE_MAX_SIZE (4096 * 64)
+#define RPC_FILE_MAX_RUNTIME (3 * 1000)
+
+#define ustream_for_each_read_buffer(stream, ptr, len) \
+ for (ptr = ustream_get_read_buf(stream, &len); \
+ ptr != NULL && len > 0; \
+ ustream_consume(stream, len), ptr = ustream_get_read_buf(stream, &len))
+
+#define ustream_declare(us, fd, name) \
+ us.stream.string_data = true; \
+ us.stream.r.buffer_len = 4096; \
+ us.stream.r.max_buffers = RPC_FILE_MAX_SIZE / 4096; \
+ us.stream.notify_read = rpc_file_##name##_read_cb; \
+ us.stream.notify_state = rpc_file_##name##_state_cb; \
+ ustream_fd_init(&us, fd);
+
+struct rpc_file_exec_context {
+ struct ubus_context *context;
+ struct ubus_request_data request;
+ struct uloop_timeout timeout;
+ struct uloop_process process;
+ struct ustream_fd opipe;
+ struct ustream_fd epipe;
+ int outlen;
+ char *out;
+ int errlen;
+ char *err;
+ int stat;
+};
-#include "file.h"
static struct blob_buf buf;
enum {
- RPC_F_PATH,
- RPC_F_DATA,
- __RPC_F_MAX,
+ RPC_F_R_PATH,
+ __RPC_F_R_MAX,
};
-static const struct blobmsg_policy rpc_file_policy[__RPC_F_MAX] = {
- [RPC_F_PATH] = { .name = "path", .type = BLOBMSG_TYPE_STRING },
- [RPC_F_DATA] = { .name = "data", .type = BLOBMSG_TYPE_STRING },
+static const struct blobmsg_policy rpc_file_r_policy[__RPC_F_R_MAX] = {
+ [RPC_F_R_PATH] = { .name = "path", .type = BLOBMSG_TYPE_STRING },
+};
+
+enum {
+ RPC_F_RB_PATH,
+ RPC_F_RB_BASE64,
+ __RPC_F_RB_MAX,
+};
+
+static const struct blobmsg_policy rpc_file_rb_policy[__RPC_F_RB_MAX] = {
+ [RPC_F_RB_PATH] = { .name = "path", .type = BLOBMSG_TYPE_STRING },
+ [RPC_F_RB_BASE64] = { .name = "base64", .type = BLOBMSG_TYPE_BOOL },
+};
+
+enum {
+ RPC_F_RW_PATH,
+ RPC_F_RW_DATA,
+ RPC_F_RW_APPEND,
+ RPC_F_RW_MODE,
+ RPC_F_RW_BASE64,
+ __RPC_F_RW_MAX,
+};
+
+static const struct blobmsg_policy rpc_file_rw_policy[__RPC_F_RW_MAX] = {
+ [RPC_F_RW_PATH] = { .name = "path", .type = BLOBMSG_TYPE_STRING },
+ [RPC_F_RW_DATA] = { .name = "data", .type = BLOBMSG_TYPE_STRING },
+ [RPC_F_RW_APPEND] = { .name = "append", .type = BLOBMSG_TYPE_BOOL },
+ [RPC_F_RW_MODE] = { .name = "mode", .type = BLOBMSG_TYPE_INT32 },
+ [RPC_F_RW_BASE64] = { .name = "base64", .type = BLOBMSG_TYPE_BOOL },
};
enum {
};
static const struct blobmsg_policy rpc_exec_policy[__RPC_E_MAX] = {
- [RPC_E_CMD] = { .name = "command", .type = BLOBMSG_TYPE_STRING },
+ [RPC_E_CMD] = { .name = "command", .type = BLOBMSG_TYPE_STRING },
[RPC_E_PARM] = { .name = "params", .type = BLOBMSG_TYPE_ARRAY },
[RPC_E_ENV] = { .name = "env", .type = BLOBMSG_TYPE_TABLE },
};
static struct blob_attr **
rpc_check_path(struct blob_attr *msg, char **path, struct stat *s)
{
- static struct blob_attr *tb[__RPC_F_MAX];
+ static struct blob_attr *tb[__RPC_F_R_MAX];
- blobmsg_parse(rpc_file_policy, __RPC_F_MAX, tb, blob_data(msg), blob_len(msg));
+ blobmsg_parse(rpc_file_r_policy, __RPC_F_R_MAX, tb, blob_data(msg), blob_len(msg));
- if (!tb[RPC_F_PATH])
+ if (!tb[RPC_F_R_PATH])
{
errno = EINVAL;
return NULL;
}
- *path = blobmsg_data(tb[RPC_F_PATH]);
+ *path = blobmsg_data(tb[RPC_F_R_PATH]);
if (stat(*path, s))
return NULL;
struct ubus_request_data *req, const char *method,
struct blob_attr *msg)
{
- int fd, rv, len;
+ static struct blob_attr *tb[__RPC_F_RB_MAX];
+ bool base64 = false;
+ int fd, rv;
+ ssize_t len;
char *path;
struct stat s;
char *wbuf;
- if (!rpc_check_path(msg, &path, &s))
+ blobmsg_parse(rpc_file_rb_policy, __RPC_F_RB_MAX, tb, blob_data(msg), blob_len(msg));
+
+ if (!tb[RPC_F_RB_PATH])
+ return rpc_errno_status();
+
+ path = blobmsg_data(tb[RPC_F_RB_PATH]);
+
+ if (stat(path, &s))
return rpc_errno_status();
if (s.st_size >= RPC_FILE_MAX_SIZE)
blob_buf_init(&buf, 0);
- wbuf = blobmsg_alloc_string_buffer(&buf, "data", s.st_size + 1);
+ if (tb[RPC_F_RB_BASE64])
+ base64 = blobmsg_get_bool(tb[RPC_F_RB_BASE64]);
+
+ len = s.st_size + 1;
+ if (base64)
+ len = B64_ENCODE_LEN(s.st_size);
+ wbuf = blobmsg_alloc_string_buffer(&buf, "data", len);
if (!wbuf)
{
goto out;
}
- *(wbuf + len) = 0;
+ if (base64)
+ {
+ uint8_t *data = calloc(len, sizeof(uint8_t));
+ if (!data)
+ {
+ rv = UBUS_STATUS_UNKNOWN_ERROR;
+ goto out;
+ }
+ memcpy(data, wbuf, len);
+
+ len = b64_encode(data, len, wbuf, B64_ENCODE_LEN(len));
+ free(data);
+ if (len < 0)
+ {
+ rv = UBUS_STATUS_UNKNOWN_ERROR;
+ goto out;
+ }
+ }
+
+ *(wbuf + len) = '\0';
blobmsg_add_string_buffer(&buf);
ubus_send_reply(ctx, req, buf.head);
rv = UBUS_STATUS_OK;
out:
+ blob_buf_free(&buf);
close(fd);
return rv;
}
struct ubus_request_data *req, const char *method,
struct blob_attr *msg)
{
- int fd;
+ struct blob_attr *tb[__RPC_F_RW_MAX];
+ int append = O_TRUNC;
+ mode_t prev_mode, mode = 0666;
+ int fd, rv = 0;
+ void *data = NULL;
+ ssize_t data_len = 0;
+
+ blobmsg_parse(rpc_file_rw_policy, __RPC_F_RW_MAX, tb,
+ blob_data(msg), blob_len(msg));
+
+ if (!tb[RPC_F_RW_PATH] || !tb[RPC_F_RW_DATA])
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ data = blobmsg_data(tb[RPC_F_RW_DATA]);
+ data_len = blobmsg_data_len(tb[RPC_F_RW_DATA]) - 1;
+
+ if (tb[RPC_F_RW_APPEND] && blobmsg_get_bool(tb[RPC_F_RW_APPEND]))
+ append = O_APPEND;
+
+ if (tb[RPC_F_RW_MODE])
+ mode = blobmsg_get_u32(tb[RPC_F_RW_MODE]);
+
+ prev_mode = umask(0);
+ fd = open(blobmsg_data(tb[RPC_F_RW_PATH]), O_CREAT | O_WRONLY | append, mode);
+ umask(prev_mode);
+ if (fd < 0)
+ return rpc_errno_status();
+
+ if (tb[RPC_F_RW_BASE64] && blobmsg_get_bool(tb[RPC_F_RW_BASE64]))
+ {
+ data_len = b64_decode(data, data, data_len);
+ if (data_len < 0)
+ {
+ rv = UBUS_STATUS_UNKNOWN_ERROR;
+ goto out;
+ }
+ }
+
+ if (write(fd, data, data_len) < 0)
+ rv = -1;
+
+out:
+ if (fsync(fd) < 0)
+ rv = -1;
+
+ close(fd);
+ sync();
+
+ if (rv)
+ return rpc_errno_status();
+
+ return 0;
+}
+
+static int
+rpc_file_md5(struct ubus_context *ctx, struct ubus_object *obj,
+ struct ubus_request_data *req, const char *method,
+ struct blob_attr *msg)
+{
+ int rv, i;
char *path;
struct stat s;
- struct blob_attr **tb;
+ uint8_t md5[16];
+ char *wbuf;
- if (!(tb = rpc_check_path(msg, &path, &s)))
+ if (!rpc_check_path(msg, &path, &s))
return rpc_errno_status();
- if (!tb[RPC_F_DATA])
- return UBUS_STATUS_INVALID_ARGUMENT;
+ if (!S_ISREG(s.st_mode))
+ return UBUS_STATUS_NOT_SUPPORTED;
- if ((fd = open(path, O_WRONLY)) < 0)
+ if ((rv = md5sum(path, md5)) <= 0)
return rpc_errno_status();
- write(fd, blobmsg_data(tb[RPC_F_DATA]), blobmsg_data_len(tb[RPC_F_DATA]));
- close(fd);
+ blob_buf_init(&buf, 0);
+ wbuf = blobmsg_alloc_string_buffer(&buf, "md5", 33);
- return 0;
+ for (i = 0; i < 16; i++)
+ sprintf(wbuf + (i * 2), "%02x", (uint8_t) md5[i]);
+
+ blobmsg_add_string_buffer(&buf);
+ ubus_send_reply(ctx, req, buf.head);
+ blob_buf_free(&buf);
+
+ return UBUS_STATUS_OK;
}
static int
blobmsg_close_table(&buf, d);
}
+ closedir(fd);
+
blobmsg_close_array(&buf, c);
ubus_send_reply(ctx, req, buf.head);
+ blob_buf_free(&buf);
return 0;
}
blobmsg_add_u32(&buf, "gid", s.st_gid);
ubus_send_reply(ctx, req, buf.head);
+ blob_buf_free(&buf);
return 0;
}
rpc_ustream_to_blobmsg(&c->epipe.stream, "stderr");
ubus_send_reply(c->context, &c->request, buf.head);
+ blob_buf_free(&buf);
}
ubus_complete_deferred_request(c->context, &c->request, rv);
static int
rpc_file_exec_run(const char *cmd,
- const struct blob_attr *arg, const struct blob_attr *env,
+ const struct blob_attr *arg, const struct blob_attr *env,
struct ubus_context *ctx, struct ubus_request_data *req)
{
pid_t pid;
return UBUS_STATUS_INVALID_ARGUMENT;
return rpc_file_exec_run(blobmsg_data(tb[RPC_E_CMD]),
- tb[RPC_E_PARM], tb[RPC_E_ENV], ctx, req);
+ tb[RPC_E_PARM], tb[RPC_E_ENV], ctx, req);
}
-int rpc_file_api_init(struct ubus_context *ctx)
+static int
+rpc_file_api_init(const struct rpc_daemon_ops *o, struct ubus_context *ctx)
{
static const struct ubus_method file_methods[] = {
- UBUS_METHOD("read", rpc_file_read, rpc_file_policy),
- UBUS_METHOD("write", rpc_file_write, rpc_file_policy),
- UBUS_METHOD("list", rpc_file_list, rpc_file_policy),
- UBUS_METHOD("stat", rpc_file_stat, rpc_file_policy),
+ UBUS_METHOD("read", rpc_file_read, rpc_file_rb_policy),
+ UBUS_METHOD("write", rpc_file_write, rpc_file_rw_policy),
+ UBUS_METHOD("list", rpc_file_list, rpc_file_r_policy),
+ UBUS_METHOD("stat", rpc_file_stat, rpc_file_r_policy),
+ UBUS_METHOD("md5", rpc_file_md5, rpc_file_r_policy),
UBUS_METHOD("exec", rpc_file_exec, rpc_exec_policy),
};
return ubus_add_object(ctx, &obj);
}
+
+struct rpc_plugin rpc_plugin = {
+ .init = rpc_file_api_init
+};
projects / project / rpcd.git / blobdiff