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Diffstat (limited to 'src/stdioclient.c')
| -rw-r--r-- | src/stdioclient.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/src/stdioclient.c b/src/stdioclient.c new file mode 100644 index 0000000..670758a --- /dev/null +++ b/src/stdioclient.c @@ -0,0 +1,190 @@ +/* + * rhctl + * + * Copyright (C) 2009-2014 Christian Pointner <equinox@helsinki.at> + * + * This file is part of rhctl. + * + * rhctl is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * any later version. + * + * rhctl is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with rhctl. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "datatypes.h" + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <errno.h> + +#include "log.h" +#include "sig_handler.h" +#include "options.h" + +#include "daemon.h" +#include "utils.h" + +int process_cmd(const char* cmd, int fd, cmd_t **cmd_q, client_t* client_lst, options_t* opt) +{ + return 0; +} + +int process_data(int src_fd, int dest_fd) +{ + char* buffer[100]; + int ret = read(src_fd, buffer, 100); + if(!ret) + return 2; + if(ret == -1 && errno == EAGAIN) + return 0; + if(ret < 0) + return ret; + + log_printf(DEBUG, "read %d bytes from fd (%d)", ret, src_fd); + + int len = ret; + int offset = 0; + for(;;) { + ret = write(dest_fd, &buffer[offset], len - offset); + if(ret < 0) { + + if(errno != EINTR) + return ret; + + ret = 0; + } + + offset += ret; + if(offset+1 >= len) + break; + } + return 0; +} + +int main_loop(int cmd_fd, options_t* opt) +{ + log_printf(NOTICE, "entering main loop"); + + fd_set readfds, tmpfds; + FD_ZERO(&readfds); + FD_SET(0, &readfds); + FD_SET(cmd_fd, &readfds); + int max_fd = cmd_fd; + + int sig_fd = signal_init(); + if(sig_fd < 0) + return -1; + FD_SET(sig_fd, &readfds); + max_fd = (max_fd < sig_fd) ? sig_fd : max_fd; + + int return_value = 0; + + while(!return_value) { + memcpy(&tmpfds, &readfds, sizeof(tmpfds)); + + int ret = select(max_fd+1, &tmpfds, NULL, NULL, NULL); + if(ret == -1 && errno != EINTR) { + log_printf(ERROR, "select returned with error: %s", strerror(errno)); + return_value = -1; + break; + } + if(ret == -1 || !ret) + continue; + + if(FD_ISSET(sig_fd, &tmpfds)) + if(signal_handle()) + return_value = 1; + + if(FD_ISSET(0, &tmpfds)) + return_value = process_data(0, cmd_fd); + + if(FD_ISSET(cmd_fd, &tmpfds)) + return_value = process_data(cmd_fd, 1); + } + + signal_stop(); + return return_value; +} + +int main(int argc, char* argv[]) +{ + log_init(); + + options_t opt; + int ret = options_parse(&opt, argc, argv); + if(ret) { + if(ret > 0) { + fprintf(stderr, "syntax error near: %s\n\n", argv[ret]); + } + if(ret == -2) { + fprintf(stderr, "memory error on options_parse, exiting\n"); + } + + if(ret != -2) + options_print_usage(); + + options_clear(&opt); + log_close(); + exit(ret); + } + string_list_element_t* tmp = opt.log_targets_.first_; + if(!tmp) { + log_add_target("stderr:2"); + } + else { + while(tmp) { + ret = log_add_target(tmp->string_); + if(ret) { + switch(ret) { + case -2: fprintf(stderr, "memory error on log_add_target, exitting\n"); break; + case -3: fprintf(stderr, "unknown log target: '%s', exitting\n", tmp->string_); break; + case -4: fprintf(stderr, "this log target is only allowed once: '%s', exitting\n", tmp->string_); break; + default: fprintf(stderr, "syntax error near: '%s', exitting\n", tmp->string_); break; + } + + options_clear(&opt); + log_close(); + exit(ret); + } + tmp = tmp->next_; + } + } + log_printf(NOTICE, "just started..."); + if(options_parse_post(&opt)) { + options_clear(&opt); + log_close(); + exit(-1); + } + + int cmd_fd = connect_command_socket(opt.command_sock_); + if(cmd_fd < 0) { + options_clear(&opt); + log_close(); + exit(-1); + } + + ret = main_loop( cmd_fd, &opt); + + close(cmd_fd); + + if(!ret) + log_printf(NOTICE, "normal shutdown"); + else if(ret < 0) + log_printf(NOTICE, "shutdown after error (code %d)", ret); + else + log_printf(NOTICE, "shutdown after signal"); + + options_clear(&opt); + log_close(); + + return ret; +} |