add a system object that allows us to set passwords and trigger sysupgrade
Signed-off-by: John Crispin <blogic@openwrt.org>
This commit is contained in:
John Crispin
parent
410802e106
commit
032346f479
2 changed files with 258 additions and 0 deletions
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@ -8,6 +8,7 @@ INCLUDE_DIRECTORIES(include)
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OPTION(FILE_SUPPORT "File plugin support" ON)
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OPTION(IWINFO_SUPPORT "libiwinfo plugin support" ON)
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OPTION(RPCSYS_SUPPORT "rpc-sys plugin support" ON)
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SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
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@ -39,6 +40,13 @@ IF(FILE_SUPPORT)
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SET_TARGET_PROPERTIES(file_plugin PROPERTIES OUTPUT_NAME file PREFIX "")
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ENDIF()
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IF(RPCSYS_SUPPORT)
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SET(PLUGINS ${PLUGINS} rpcsys_plugin)
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ADD_LIBRARY(rpcsys_plugin MODULE sys.c)
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TARGET_LINK_LIBRARIES(rpcsys_plugin ubox ubus)
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SET_TARGET_PROPERTIES(rpcsys_plugin PROPERTIES OUTPUT_NAME rpcsys PREFIX "")
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ENDIF()
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IF (IWINFO_SUPPORT)
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SET(PLUGINS ${PLUGINS} iwinfo_plugin)
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ADD_LIBRARY(iwinfo_plugin MODULE iwinfo.c)
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250
sys.c
Normal file
250
sys.c
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@ -0,0 +1,250 @@
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/*
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* rpcd - UBUS RPC server
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*
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* Copyright (C) 2013-2014 Jo-Philipp Wich <jow@openwrt.org>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <libubus.h>
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#include <rpcd/exec.h>
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#include <rpcd/plugin.h>
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#include <rpcd/session.h>
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#include <sys/reboot.h>
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static const struct rpc_daemon_ops *ops;
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enum {
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RPC_P_USER,
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RPC_P_PASSWORD,
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__RPC_P_MAX
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};
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static const struct blobmsg_policy rpc_password_policy[__RPC_P_MAX] = {
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[RPC_P_USER] = { .name = "user", .type = BLOBMSG_TYPE_STRING },
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[RPC_P_PASSWORD] = { .name = "password", .type = BLOBMSG_TYPE_STRING },
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};
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enum {
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RPC_UPGRADE_KEEP,
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__RPC_UPGRADE_MAX
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};
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static const struct blobmsg_policy rpc_upgrade_policy[__RPC_UPGRADE_MAX] = {
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[RPC_UPGRADE_KEEP] = { .name = "keep", .type = BLOBMSG_TYPE_BOOL },
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};
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static int
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rpc_errno_status(void)
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{
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switch (errno)
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{
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case EACCES:
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return UBUS_STATUS_PERMISSION_DENIED;
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case ENOTDIR:
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return UBUS_STATUS_INVALID_ARGUMENT;
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case ENOENT:
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return UBUS_STATUS_NOT_FOUND;
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case EINVAL:
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return UBUS_STATUS_INVALID_ARGUMENT;
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default:
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return UBUS_STATUS_UNKNOWN_ERROR;
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}
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}
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static int
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rpc_cgi_password_set(struct ubus_context *ctx, struct ubus_object *obj,
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struct ubus_request_data *req, const char *method,
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struct blob_attr *msg)
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{
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pid_t pid;
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int fd, fds[2];
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struct stat s;
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struct blob_attr *tb[__RPC_P_MAX];
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blobmsg_parse(rpc_password_policy, __RPC_P_MAX, tb,
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blob_data(msg), blob_len(msg));
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if (!tb[RPC_P_USER] || !tb[RPC_P_PASSWORD])
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return UBUS_STATUS_INVALID_ARGUMENT;
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if (stat("/usr/bin/passwd", &s))
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return UBUS_STATUS_NOT_FOUND;
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if (!(s.st_mode & S_IXUSR))
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return UBUS_STATUS_PERMISSION_DENIED;
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if (pipe(fds))
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return rpc_errno_status();
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switch ((pid = fork()))
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{
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case -1:
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close(fds[0]);
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close(fds[1]);
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return rpc_errno_status();
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case 0:
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uloop_done();
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dup2(fds[0], 0);
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close(fds[0]);
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close(fds[1]);
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if ((fd = open("/dev/null", O_RDWR)) > -1)
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{
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dup2(fd, 1);
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dup2(fd, 2);
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close(fd);
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}
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chdir("/");
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if (execl("/usr/bin/passwd", "/usr/bin/passwd",
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blobmsg_data(tb[RPC_P_USER]), NULL))
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return rpc_errno_status();
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default:
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close(fds[0]);
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write(fds[1], blobmsg_data(tb[RPC_P_PASSWORD]),
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blobmsg_data_len(tb[RPC_P_PASSWORD]) - 1);
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write(fds[1], "\n", 1);
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usleep(100 * 1000);
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write(fds[1], blobmsg_data(tb[RPC_P_PASSWORD]),
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blobmsg_data_len(tb[RPC_P_PASSWORD]) - 1);
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write(fds[1], "\n", 1);
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close(fds[1]);
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waitpid(pid, NULL, 0);
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return 0;
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}
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}
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static int
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rpc_sys_upgrade_test(struct ubus_context *ctx, struct ubus_object *obj,
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struct ubus_request_data *req, const char *method,
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struct blob_attr *msg)
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{
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const char *cmd[4] = { "sysupgrade", "--test", "/tmp/firmware.bin", NULL };
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return ops->exec(cmd, NULL, NULL, NULL, NULL, NULL, ctx, req);
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}
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static int
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rpc_sys_upgrade_start(struct ubus_context *ctx, struct ubus_object *obj,
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struct ubus_request_data *req, const char *method,
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struct blob_attr *msg)
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{
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struct blob_attr *tb[__RPC_UPGRADE_MAX];
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char * const cmd[4] = { "/sbin/sysupgrade", "-n", "/tmp/firmware.bin", NULL };
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char * const cmd_keep[3] = { "/sbin/sysupgrade", "/tmp/firmware.bin", NULL };
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char * const * c = cmd;
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blobmsg_parse(rpc_upgrade_policy, __RPC_UPGRADE_MAX, tb,
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blob_data(msg), blob_len(msg));
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if (tb[RPC_UPGRADE_KEEP] && blobmsg_get_bool(tb[RPC_UPGRADE_KEEP]))
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c = cmd_keep;
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if (!fork()) {
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/* wait for the RPC call to complete */
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sleep(2);
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return execv(c[0], c);
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}
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return 0;
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}
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static int
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rpc_sys_upgrade_clean(struct ubus_context *ctx, struct ubus_object *obj,
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struct ubus_request_data *req, const char *method,
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struct blob_attr *msg)
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{
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if (unlink("/tmp/firmware.bin"))
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return rpc_errno_status();
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return 0;
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}
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static int
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rpc_sys_factory(struct ubus_context *ctx, struct ubus_object *obj,
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struct ubus_request_data *req, const char *method,
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struct blob_attr *msg)
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{
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char * const cmd[4] = { "/sbin/jffs2reset", "-y", "-r", NULL };
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if (!fork()) {
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/* wait for the RPC call to complete */
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sleep(2);
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return execv(cmd[0], cmd);
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}
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return 0;
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}
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static int
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rpc_sys_reboot(struct ubus_context *ctx, struct ubus_object *obj,
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struct ubus_request_data *req, const char *method,
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struct blob_attr *msg)
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{
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if (!fork()) {
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sync();
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sleep(2);
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reboot(RB_AUTOBOOT);
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while (1)
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;
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}
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return 0;
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}
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static int
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rpc_sys_api_init(const struct rpc_daemon_ops *o, struct ubus_context *ctx)
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{
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static const struct ubus_method sys_methods[] = {
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UBUS_METHOD("password_set", rpc_cgi_password_set, rpc_password_policy),
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UBUS_METHOD_NOARG("upgrade_test", rpc_sys_upgrade_test),
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UBUS_METHOD("upgrade_start", rpc_sys_upgrade_start,
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rpc_upgrade_policy),
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UBUS_METHOD_NOARG("upgrade_clean", rpc_sys_upgrade_clean),
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UBUS_METHOD_NOARG("factory", rpc_sys_factory),
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UBUS_METHOD_NOARG("reboot", rpc_sys_reboot),
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};
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static struct ubus_object_type sys_type =
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UBUS_OBJECT_TYPE("luci-rpc-sys", sys_methods);
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static struct ubus_object obj = {
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.name = "rpc-sys",
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.type = &sys_type,
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.methods = sys_methods,
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.n_methods = ARRAY_SIZE(sys_methods),
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};
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ops = o;
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return ubus_add_object(ctx, &obj);
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}
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struct rpc_plugin rpc_plugin = {
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.init = rpc_sys_api_init
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};
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