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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..4fa014d --- /dev/null +++ b/Makefile @@ -0,0 +1,16 @@ +INSTALL := install +DESTDIR := + + +keyexec: keyexec.c + $(CC) keyexec.c -o keyexec -lkeyutils + +install: keyexec + $(INSTALL) -D -m 4711 keyexec $(DESTDIR)/usr/bin/keyexec + +uninstall: $(DESTDIR)/usr/bin/keyexec + $(RM) $(DESTDIR)/usr/bin/keyexec + +clean: keyexec + $(RM) keyexec + diff --git a/README b/README new file mode 100644 index 0000000..75374a8 --- /dev/null +++ b/README @@ -0,0 +1,21 @@ +Это файл README для программы keyexec +Программа keyexec предназначена для доступа терминального клиента к +рабочему столу Windows. +Программа работает через rdesktop-клиент. + +Необходимые программы +--------------------- + +rdesktop версии 1.2.0 и выше +pam_keystore версии 0.1 и выше + +Инсталяция +---------- + + make + make install + +Удаление +-------- + + make uninstall diff --git a/keyexec.c b/keyexec.c new file mode 100644 index 0000000..524160e --- /dev/null +++ b/keyexec.c @@ -0,0 +1,238 @@ +//Copyright 2007 Calculate Pack, http://www.calculate-linux.ru +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include +#include +#include + +// для пароля +#include +#include + +// для strcpy strlen +#include + +// для работы с ключами +#include + +//Статистика файла + #include + #include + +int main( int argc, const char* argv[] ) +{ + // идентификатор пользователя + uid_t uid, gid; + int ret; + int rez1,rez2; + void *buffer; + if (argc==1) + { + // получаем id и группу пользователя + uid = getuid(); + gid = getgid(); + //Устанавливаем права пользователя на этот процесс + rez1 = setgid(gid); + rez2 = setuid(uid); + if (rez1==-1||rez2==-1) + { + printf ("exec not SUID root\n"); + exit(EXIT_FAILURE); + }; + // ищем номер пользовательского ключа + ret = request_key("user", "tmp", NULL, 0); + if (ret < 0) + { + printf ("id_key not found\n"); + exit(EXIT_FAILURE); + }; + // Возвращаем значение ключа + int retf; + retf = keyctl_read_alloc(ret, &buffer); + if (retf < 0) + { + printf("error keyctl_read_alloc\n"); + exit(EXIT_FAILURE); + }; + printf ("%s",buffer); + buffer = "XXXXXXXX"; + key_serial_t dest; + // Получаем id пользовательског ключа + dest = KEY_SPEC_USER_SESSION_KEYRING; + // записываем ключ в пространство user + ret = add_key("user", "tmp", buffer, strlen(buffer), dest); + exit(EXIT_SUCCESS); + }; + if (argc!=3) + { + printf("Error: needed two argument\n"); + exit(EXIT_FAILURE); + } + + // получаем id и группу пользователя + uid = getuid(); + gid = getgid(); + + char * prog_name[10]; + char * prog_path[10]; + char * prog_sring[10]; + int count_prog =10; + + // идентификатор и путь к программе + prog_name[0] = "rdesktop"; + prog_path[0] = "/usr/bin/rdesktop"; + prog_sring[0] = ""; + prog_name[1] = "rdesktop1"; + prog_path[1] = "/usr/bin/rdesktop"; + prog_sring[1] = "/usr/bin/kstart --window=.* --desktop=1"; + prog_name[2] = "rdesktop2"; + prog_path[2] = "/usr/bin/rdesktop"; + prog_sring[2] = "/usr/bin/kstart --window=.* --desktop=2"; + prog_name[3] = "rdesktop3"; + prog_path[3] = "/usr/bin/rdesktop"; + prog_sring[3] = "/usr/bin/kstart --window=.* --desktop=3"; + prog_name[4] = "rdesktop4"; + prog_path[4] = "/usr/bin/rdesktop"; + prog_sring[4] = "/usr/bin/kstart --window=.* --desktop=4"; + prog_name[5] = "rdesktop5"; + prog_path[5] = "/usr/bin/rdesktop"; + prog_sring[5] = "/usr/bin/kstart --window=.* --desktop=5"; + prog_name[6] = "rdesktop6"; + prog_path[6] = "/usr/bin/rdesktop"; + prog_sring[6] = "/usr/bin/kstart --window=.* --desktop=6"; + prog_name[7] = "rdesktop7"; + prog_path[7] = "/usr/bin/rdesktop"; + prog_sring[7] = "/usr/bin/kstart --window=.* --desktop=7"; + prog_name[8] = "rdesktop8"; + prog_path[8] = "/usr/bin/rdesktop"; + prog_sring[8] = "/usr/bin/kstart --window=.* --desktop=8"; + prog_name[9] = "rdesktop9"; + prog_path[9] = "/usr/bin/rdesktop"; + prog_sring[9] = "/usr/bin/kstart --window=.* --desktop=9"; + // путь к выполняемой программе + char * str_prog = NULL; +// В случае kstart + char * str_prog_ks = NULL; + + int i; + for (i=0;ipw_name)+1); + strcpy (login,pwd->pw_name); + + //устанавливаем права рута + rez1 = setgid(0); + rez2 = setuid(0); + + if (rez1==-1||rez2==-1) + { + printf ("Exec not SUID root\n"); + exit(EXIT_FAILURE); + }; + + int ret; + // ищем номер пользовательского ключа + ret = request_key("user", login, NULL, 0); + if (ret < 0) + { + printf ("id_key not found\n"); + exit(EXIT_FAILURE); + }; + + // Возвращаем значение ключа + ret = keyctl_read_alloc(ret, &buffer); + if (ret < 0) + { + printf("error keyctl_read_alloc\n"); + exit(EXIT_FAILURE); + } + //Устанавливаем права пользователя на этот процесс + rez1 = setgid(gid); + rez2 = setuid(uid); + if (rez1==-1||rez2==-1) + { + printf ("exec not SUID root\n"); + exit(EXIT_FAILURE); + }; + key_serial_t dest; + // Получаем id пользовательског ключа + dest = KEY_SPEC_USER_SESSION_KEYRING; + //printf("DEST=%d\n",dest); + + // записываем ключ в пространство user + ret = add_key("user", "tmp", buffer, strlen(buffer), dest); + //printf("RET=%d\n",ret); + //Распределяем память и создаем строку запуска + char *buff; + if (str_prog_ks == "") + { + char *com = "keyexec | %s %s"; + buff = (char*) malloc (strlen(com)+strlen(str_prog)+strlen(argv[2])+1); + sprintf (buff, com, str_prog, argv[2]); + } + else + { + char *com = "%s keyexec | %s %s"; + buff = (char*) malloc (strlen(str_prog_ks)+strlen(com)+strlen(buffer)+strlen(str_prog)+strlen(argv[2])+1); + sprintf (buff, com, str_prog_ks, str_prog, argv[2]); + }; + //Выполнение программы + system(buff); + free(login); + free (buff); + exit(EXIT_SUCCESS); + }; + printf ("Executed file %s not valid\n",str_prog); + exit(EXIT_FAILURE); +}