/*
- * Copyright (C) 1997-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1997-2011 Andre Noll <maan@systemlinux.org>
*
- * This program 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 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Licensed under the GPL v2. For licencing details see COPYING.
*/
/** \file client.c the client program used to connect to para_server */
+#include <regex.h>
+#include <signal.h>
+
#include "para.h"
-#include "config.h"
-#include "client.cmdline.h"
+#include "list.h"
+#include "sched.h"
#include "crypt.h"
-#include "rc4.h"
-#include <openssl/rc4.h>
-#include "net.h"
+#include "client.cmdline.h"
#include "string.h"
+#include "stdin.h"
+#include "stdout.h"
+#include "client.h"
+#include "buffer_tree.h"
+#include "error.h"
+#include "version.h"
-struct gengetopt_args_info args_info;
+INIT_CLIENT_ERRLISTS;
-/*
- * client log function
- */
-void para_log(int ll, const char* fmt,...)
+static struct sched sched;
+static struct client_task *ct;
+static struct stdin_task sit;
+static struct stdout_task sot;
+
+static int client_loglevel = LL_ERROR;
+DEFINE_STDERR_LOGGER(stderr_log, client_loglevel);
+__printf_2_3 void (*para_log)(int, const char*, ...) = stderr_log;
+
+#ifdef HAVE_READLINE
+#include "interactive.h"
+#include "server_completion.h"
+#include "afs_completion.h"
+
+struct exec_task {
+ struct task task;
+ struct btr_node *btrn;
+ char *result_buf;
+ size_t result_size;
+};
+
+static void exec_pre_select(struct sched *s, struct task *t)
{
- va_list argp;
- FILE *outfd;
+ struct exec_task *et = container_of(t, struct exec_task, task);
+ int ret = btr_node_status(et->btrn, 0, BTR_NT_LEAF);
- /* ignore log message if loglevel is not high enough */
- if (ll < args_info.loglevel_arg)
- return;
- va_start(argp, fmt);
- vfprintf(stderr, fmt, argp);
- va_end(argp);
+ if (ret != 0)
+ sched_min_delay(s);
}
-void get_options(int argc, char *argv[],
- char **config_file, char **key_file)
+static void exec_post_select(__a_unused struct sched *s, struct task *t)
{
- char *home;
- static char default_key_file[_POSIX_PATH_MAX] = "";
- static char default_config_file[_POSIX_PATH_MAX] = "";
- struct stat statbuf;
+ struct exec_task *et = container_of(t, struct exec_task, task);
+ struct btr_node *btrn = et->btrn;
+ char *buf;
+ size_t sz;
int ret;
- cmdline_parser(argc, argv, &args_info);
- if (!args_info.user_given)
- args_info.user_arg = para_logname();
- if (!args_info.key_file_given) {
- home = para_homedir();
- sprintf(default_key_file, "%s/.paraslash/key.%s", home,
- args_info.user_arg);
- free(home);
+ ret = btr_node_status(btrn, 0, BTR_NT_LEAF);
+ if (ret <= 0) {
+ t->error = ret;
+ return;
}
- if (!args_info.config_file_given) {
- home = para_homedir();
- sprintf(default_config_file, "%s/.paraslash/client.conf",
- home);
- free(home);
+ sz = btr_next_buffer(btrn, &buf);
+ if (sz <= 1)
+ goto out;
+ et->result_buf = para_realloc(et->result_buf, et->result_size + sz - 1);
+ memcpy(et->result_buf + et->result_size - 1, buf, sz - 1);
+ et->result_size += sz - 1;
+ et->result_buf[et->result_size - 1] = '\0';
+out:
+ btr_consume(btrn, sz);
+}
+
+static int make_client_argv(const char *line)
+{
+ int ret;
+
+ free_argv(ct->conf.inputs);
+ ret = create_argv(line, " ", &ct->conf.inputs);
+ if (ret >= 0)
+ ct->conf.inputs_num = ret;
+ return ret;
+}
+
+static int execute_client_command(const char *cmd, char **result)
+{
+ int ret;
+ struct sched command_sched = {.default_timeout = {.tv_sec = 1}};
+ struct exec_task exec_task = {
+ .task = {
+ .pre_select = exec_pre_select,
+ .post_select = exec_post_select,
+ .status = "client exec task",
+ },
+ .result_buf = para_strdup(""),
+ .result_size = 1,
+ };
+ *result = NULL;
+ ret = make_client_argv(cmd);
+ if (ret < 0)
+ goto out;
+ exec_task.btrn = btr_new_node(&(struct btr_node_description)
+ EMBRACE(.name = "exec_collect"));
+ register_task(&command_sched, &exec_task.task);
+ ret = client_connect(ct, &command_sched, NULL, exec_task.btrn);
+ if (ret < 0)
+ goto out;
+ schedule(&command_sched);
+ *result = exec_task.result_buf;
+ btr_remove_node(exec_task.btrn);
+ client_disconnect(ct);
+ ret = 1;
+out:
+ btr_free_node(exec_task.btrn);
+ if (ret < 0)
+ free(exec_task.result_buf);
+ return ret;
+}
+
+static int extract_matches_from_command(const char *word, char *cmd,
+ char ***matches)
+{
+ char *buf, **sl;
+ int ret;
+
+ ret = execute_client_command(cmd, &buf);
+ if (ret < 0)
+ return ret;
+ ret = create_argv(buf, "\n", &sl);
+ free(buf);
+ if (ret < 0)
+ return ret;
+ ret = i9e_extract_completions(word, sl, matches);
+ free_argv(sl);
+ return ret;
+}
+
+static int complete_attributes(const char *word, char ***matches)
+{
+ return extract_matches_from_command(word, "lsatt", matches);
+}
+
+static void complete_addblob(__a_unused const char *blob_type,
+ __a_unused struct i9e_completion_info *ci,
+ __a_unused struct i9e_completion_result *cr)
+{
+ cr->filename_completion_desired = true;
+}
+
+static void generic_blob_complete(const char *blob_type,
+ struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
+{
+ char cmd[20];
+ sprintf(cmd, "ls%s", blob_type);
+ extract_matches_from_command(ci->word, cmd, &cr->matches);
+}
+
+static void complete_catblob(const char *blob_type,
+ struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
+{
+ generic_blob_complete(blob_type, ci, cr);
+}
+
+static void complete_lsblob(const char *blob_type,
+ struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
+{
+ char *opts[] = {"-i", "-l", "-r", NULL};
+
+ if (ci->word[0] == '-')
+ return i9e_complete_option(opts, ci, cr);
+ generic_blob_complete(blob_type, ci, cr);
+}
+
+static void complete_rmblob(const char *blob_type,
+ struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
+{
+ generic_blob_complete(blob_type, ci, cr);
+}
+
+static void complete_mvblob(const char *blob_type,
+ struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
+{
+ generic_blob_complete(blob_type, ci, cr);
+}
+
+/* these don't need any completions */
+I9E_DUMMY_COMPLETER(ff);
+I9E_DUMMY_COMPLETER(hup);
+I9E_DUMMY_COMPLETER(jmp);
+I9E_DUMMY_COMPLETER(next);
+I9E_DUMMY_COMPLETER(nomore);
+I9E_DUMMY_COMPLETER(pause);
+I9E_DUMMY_COMPLETER(play);
+I9E_DUMMY_COMPLETER(si);
+I9E_DUMMY_COMPLETER(term);
+I9E_DUMMY_COMPLETER(version);
+I9E_DUMMY_COMPLETER(stop);
+I9E_DUMMY_COMPLETER(addatt);
+I9E_DUMMY_COMPLETER(init);
+
+static struct i9e_completer completers[];
+
+static void help_completer(struct i9e_completion_info *ci,
+ struct i9e_completion_result *result)
+{
+ result->matches = i9e_complete_commands(ci->word, completers);
+}
+
+static void stat_completer(struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
+{
+ char *opts[] = {"-n=", "-p", NULL};
+ //PARA_CRIT_LOG("word: %s\n", ci->word);
+ i9e_complete_option(opts, ci, cr);
+}
+
+static void sender_completer(struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
+{
+ char *senders[] = {"http", "dccp", "udp", NULL};
+ char *http_cmds[] = {"on", "off", "allow", "deny", "help", NULL};
+ char *dccp_cmds[] = {"on", "off", "allow", "deny", "help", NULL};
+ char *udp_cmds[] ={"on", "off", "add", "delete", "help", NULL};
+ char *sender;
+ char **cmds;
+
+ //PARA_CRIT_LOG("wn: %d\n", ci->word_num);
+ if (ci->word_num == 0 || ci->word_num > 3)
+ return;
+ if (ci->word_num == 1 || (ci->word_num == 2 && *ci->word != '\0')) {
+ i9e_extract_completions(ci->word, senders, &cr->matches);
+ return;
}
- if (!args_info.config_file_given)
- *config_file = default_config_file;
+ sender = ci->argv[1];
+ //PARA_CRIT_LOG("sender: %s\n", sender);
+ if (strcmp(sender, "http") == 0)
+ cmds = http_cmds;
+ else if (strcmp(sender, "dccp") == 0)
+ cmds = dccp_cmds;
+ else if (strcmp(sender, "udp") == 0)
+ cmds = udp_cmds;
else
- *config_file = args_info.config_file_arg;
- ret = stat(*config_file, &statbuf);
- if (ret && args_info.config_file_given) {
- fprintf(stderr, "can not stat config file %s\n",
- args_info.config_file_arg);
- exit(EXIT_FAILURE);
+ return;
+ i9e_extract_completions(ci->word, cmds, &cr->matches);
+}
+
+static void add_completer(struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
+{
+ char *opts[] = {"-a", "-l", "-f", "-v", "--", NULL};
+
+ if (ci->word[0] == '-')
+ i9e_complete_option(opts, ci, cr);
+ cr->filename_completion_desired = true;
+}
+
+static void ls_completer(struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
+{
+ char *opts[] = {
+ "--", "-l", "-ls", "-ll", "-lv", "-lp", "-lm", "-lc", "-p",
+ "-a", "-r", "-d", "-sp", "-sl", "-ss", "-sn", "-sf", "-sc",
+ "-si", "-sy", "-sb", "-sd", "-sa", NULL
+ };
+ if (ci->word[0] == '-')
+ i9e_complete_option(opts, ci, cr);
+ cr->filename_completion_desired = true;
+}
+
+static void setatt_completer(struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
+{
+ char *buf, **sl;
+ int i, ret, num_atts;
+
+ if (ci->word_num == 0)
+ return;
+
+ if (*ci->word == '/' || *ci->word == '\0')
+ cr->filename_completion_desired = true;
+ if (*ci->word == '/')
+ return;
+ ret = execute_client_command("lsatt", &buf);
+ if (ret < 0)
+ return;
+ ret = create_argv(buf, "\n", &sl);
+ if (ret < 0)
+ goto out;
+ num_atts = ret;
+ sl = para_realloc(sl, (2 * num_atts + 1) * sizeof(char *));
+ for (i = 0; i < num_atts; i++) {
+ char *orig = sl[i];
+ sl[i] = make_message("%s+", orig);
+ sl[num_atts + i] = make_message("%s-", orig);
+ free(orig);
}
- if (!ret)
- cmdline_parser_configfile(*config_file, &args_info, 0, 0, 0);
- if (!args_info.key_file_given)
- *key_file = default_key_file;
+ sl[2 * num_atts] = NULL;
+ ret = i9e_extract_completions(ci->word, sl, &cr->matches);
+out:
+ free(buf);
+ free_argv(sl);
+}
+
+static void lsatt_completer(struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
+{
+ char *opts[] = {"-i", "-l", "-r", NULL};
+
+ if (ci->word[0] == '-')
+ i9e_complete_option(opts, ci, cr);
else
- *key_file = args_info.key_file_arg;
+ complete_attributes(ci->word, &cr->matches);
}
-static RC4_KEY rc4_recv_key;
-static RC4_KEY rc4_send_key;
-static unsigned char rc4_buf[2 * RC4_KEY_LEN];
+static void mvatt_completer(struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
+{
+ complete_attributes(ci->word, &cr->matches);
+}
-static void rc4_send(unsigned long len, const unsigned char *indata, unsigned char *outdata)
+static void rmatt_completer(struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
{
- RC4(&rc4_send_key, len, indata, outdata);
+ complete_attributes(ci->word, &cr->matches);
}
-static void rc4_recv(unsigned long len, const unsigned char *indata, unsigned char *outdata)
+static void check_completer(struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
{
- RC4(&rc4_recv_key, len, indata, outdata);
+ char *opts[] = {"-a", "-m", "-p", NULL};
+ i9e_complete_option(opts, ci, cr);
}
-void (*crypt_function_recv)(unsigned long len, const unsigned char *indata, unsigned char *outdata);
-void (*crypt_function_send)(unsigned long len, const unsigned char *indata, unsigned char *outdata);
+static void rm_completer(struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
+{
+ char *opts[] = {"-v", "-f", "-p", NULL};
+
+ if (ci->word[0] == '-') {
+ i9e_complete_option(opts, ci, cr);
+ return;
+ }
+ cr->filename_completion_desired = true;
+}
-static void append_str(char **data, const char* append)
+static void touch_completer(struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
{
- if (*data) {
- char *tmp = make_message("%s\n%s", *data, append);
- free(*data);
- *data = tmp;
- } else
- *data = para_strdup(append);
+ char *opts[] = {"-n=", "-l=", "-y=", "-i=", "-a=", "-v", "-p", NULL};
+
+ if (ci->word[0] == '-')
+ i9e_complete_option(opts, ci, cr);
+ cr->filename_completion_desired = true;
}
-/*
- * MAIN
- */
-int main(int argc, char *argv[])
+static void cpsi_completer(struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
{
+ char *opts[] = {"-a", "-y", "-i", "-l", "-n", "-v", NULL};
- int sockfd, numbytes, i, received, ret;
- struct hostent *he;
- struct sockaddr_in their_addr;
- char *command = NULL;
- char buf[8192];
- char *auth_str;
- char *key_file, *config_file;
- long unsigned challenge_nr;
-
- get_options(argc, argv, &config_file, &key_file);
- if (args_info.loglevel_arg <= NOTICE)
- cmdline_parser_print_version();
- PARA_INFO_LOG(
- "current loglevel: %d\n"
- "using config_file: %s\n"
- "using key_file: %s\n"
- "connecting to %s:%d\n",
- args_info.loglevel_arg,
- config_file,
- key_file,
- args_info.hostname_arg,
- args_info.server_port_arg
- );
- if (!args_info.inputs_num) {
- PARA_ERROR_LOG("%s", "syntax error\n");
- exit(EXIT_FAILURE);
- }
- /* concat args */
- for (i = 0; i < args_info.inputs_num; i++)
- append_str(&command, args_info.inputs[i]);
-
- crypt_function_recv = NULL;
- crypt_function_send = NULL;
- /* get the host info */
- PARA_NOTICE_LOG("getting host info of %s\n",
- args_info.hostname_arg);
- if (!(he = get_host_info(args_info.hostname_arg)))
- exit(EXIT_FAILURE);
- /* get new socket */
- if ((sockfd = get_socket()) < 0)
- exit(EXIT_FAILURE);
- /* init their_addr */
- init_sockaddr(&their_addr, args_info.server_port_arg, he);
- /* Connect */
- PARA_NOTICE_LOG("connecting to %s...\n",
- args_info.hostname_arg);
- if (para_connect(sockfd, &their_addr) < 0)
- exit(EXIT_FAILURE);
- /* Receive Welcome message */
- if ((numbytes = recv_buffer(sockfd, buf, sizeof(buf))) < 0)
- exit(EXIT_FAILURE);
- /* send auth command */
- auth_str = make_message("auth %s%s", args_info.plain_given? "" : "rc4 ",
- args_info.user_arg);
- PARA_INFO_LOG("<-- %s--> %s\n", buf, auth_str);
- if (send_buffer(sockfd, auth_str) < 0)
- exit(EXIT_FAILURE);
- /* receive challenge number */
- if ((numbytes = recv_buffer(sockfd, buf, sizeof(buf))) < 0)
- exit(EXIT_FAILURE);
- if (numbytes != 64) {
- PARA_EMERG_LOG("did not receive valid challenge (got %i bytes)\n",
- numbytes);
- buf[numbytes] = '\0';
- PARA_ERROR_LOG("received the following instead: %s\n", buf);
- exit(EXIT_FAILURE);
+ if (ci->word[0] == '-')
+ i9e_complete_option(opts, ci, cr);
+ cr->filename_completion_desired = true;
+}
+
+static void select_completer(struct i9e_completion_info *ci,
+ struct i9e_completion_result *cr)
+{
+ char *mood_buf, *pl_buf, **moods, **playlists, **mops;
+ int num_moods, num_pl, i, n, ret;
+
+ ret = execute_client_command("lsmood", &mood_buf);
+ if (ret < 0)
+ return;
+ ret = execute_client_command("lspl", &pl_buf);
+ if (ret < 0)
+ goto free_mood_buf;
+
+ ret = create_argv(mood_buf, "\n", &moods);
+ if (ret < 0)
+ goto free_pl_buf;
+ num_moods = ret;
+ ret = create_argv(pl_buf, "\n", &playlists);
+ if (ret < 0)
+ goto free_moods;
+ num_pl = ret;
+ n = num_moods + num_pl;
+ mops = para_malloc((n + 1) * sizeof(char *));
+ for (i = 0; i < num_moods; i++)
+ mops[i] = make_message("m/%s", moods[i]);
+ for (i = 0; i < num_pl; i++)
+ mops[num_moods + i] = make_message("p/%s", playlists[i]);
+ mops[n] = NULL;
+ i9e_extract_completions(ci->word, mops, &cr->matches);
+ free_argv(mops);
+ free_argv(playlists);
+free_moods:
+ free_argv(moods);
+free_pl_buf:
+ free(pl_buf);
+free_mood_buf:
+ free(mood_buf);
+}
+
+#define DEFINE_BLOB_COMPLETER(cmd, blob_type) \
+ static void cmd ## blob_type ## _completer( \
+ struct i9e_completion_info *ci, \
+ struct i9e_completion_result *cr) \
+ {complete_ ## cmd ## blob(#blob_type, ci, cr);}
+
+DEFINE_BLOB_COMPLETER(add, mood)
+DEFINE_BLOB_COMPLETER(add, lyr)
+DEFINE_BLOB_COMPLETER(add, img)
+DEFINE_BLOB_COMPLETER(add, pl)
+DEFINE_BLOB_COMPLETER(cat, mood)
+DEFINE_BLOB_COMPLETER(cat, lyr)
+DEFINE_BLOB_COMPLETER(cat, img)
+DEFINE_BLOB_COMPLETER(cat, pl)
+DEFINE_BLOB_COMPLETER(ls, mood)
+DEFINE_BLOB_COMPLETER(ls, lyr)
+DEFINE_BLOB_COMPLETER(ls, img)
+DEFINE_BLOB_COMPLETER(ls, pl)
+DEFINE_BLOB_COMPLETER(rm, mood)
+DEFINE_BLOB_COMPLETER(rm, lyr)
+DEFINE_BLOB_COMPLETER(rm, img)
+DEFINE_BLOB_COMPLETER(rm, pl)
+DEFINE_BLOB_COMPLETER(mv, mood)
+DEFINE_BLOB_COMPLETER(mv, lyr)
+DEFINE_BLOB_COMPLETER(mv, img)
+DEFINE_BLOB_COMPLETER(mv, pl)
+
+static int client_i9e_line_handler(char *line)
+{
+ int ret;
+
+ client_disconnect(ct);
+ if (!line || !*line)
+ return 0;
+ PARA_DEBUG_LOG("line handler: %s\n", line);
+ ret = make_client_argv(line);
+ if (ret < 0)
+ return ret;
+ ret = client_connect(ct, &sched, NULL, NULL);
+ if (ret < 0)
+ return ret;
+ i9e_attach_to_stdout(ct->btrn);
+ return 1;
+}
+
+static void client_sighandler(int s)
+{
+ i9e_signal_dispatch(s);
+}
+
+static struct i9e_completer completers[] = {
+ SERVER_COMPLETERS
+ AFS_COMPLETERS
+ {.name = NULL}
+};
+
+__noreturn static void interactive_session(void)
+{
+ int ret;
+ char *history_file;
+ struct sigaction act;
+ struct i9e_client_info ici = {
+ .fds = {0, 1, 2},
+ .prompt = "para_client> ",
+ .line_handler = client_i9e_line_handler,
+ .loglevel = client_loglevel,
+ .completers = completers,
+ };
+
+ PARA_NOTICE_LOG("\n%s\n", VERSION_TEXT("client"));
+ if (ct->conf.history_file_given)
+ history_file = para_strdup(ct->conf.history_file_arg);
+ else {
+ char *home = para_homedir();
+ history_file = make_message("%s/.paraslash/client.history",
+ home);
+ free(home);
}
- PARA_INFO_LOG("<-- [challenge (%i bytes)]\n", numbytes);
- /* decrypt challenge number */
- ret = para_decrypt_challenge(key_file, &challenge_nr, (unsigned char *) buf,
- numbytes);
- if (ret < 0) {
- PARA_EMERG_LOG("decrypt error (%d). Bad secret key?\n", ret);
- exit(EXIT_FAILURE);
+ ici.history_file = history_file;
+
+ act.sa_handler = client_sighandler;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = 0;
+ sigaction(SIGINT, &act, NULL);
+ sched.select_function = i9e_select;
+
+ ret = i9e_open(&ici, &sched);
+ if (ret < 0)
+ goto out;
+ para_log = i9e_log;
+ ret = schedule(&sched);
+ i9e_close();
+ para_log = stderr_log;
+out:
+ if (ret < 0)
+ PARA_ERROR_LOG("%s\n", para_strerror(-ret));
+ exit(ret < 0? EXIT_FAILURE : EXIT_SUCCESS);
+ //client_close(ct);
+}
+
+__noreturn static void print_completions(void)
+{
+ int ret = i9e_print_completions(completers);
+ exit(ret <= 0? EXIT_FAILURE : EXIT_SUCCESS);
+}
+
+#else /* HAVE_READLINE */
+
+__noreturn static void interactive_session(void)
+{
+ PARA_EMERG_LOG("interactive sessions not available\n");
+ exit(EXIT_FAILURE);
+}
+
+__noreturn static void print_completions(void)
+{
+ PARA_EMERG_LOG("command completion not available\n");
+ exit(EXIT_FAILURE);
+}
+
+#endif /* HAVE_READLINE */
+
+static void supervisor_post_select(struct sched *s, struct task *t)
+{
+ if (ct->task.error < 0) {
+ t->error = ct->task.error;
+ return;
}
- /* send decrypted challenge */
- PARA_INFO_LOG("--> %lu\n", challenge_nr);
- if (send_va_buffer(sockfd, "%s%lu", CHALLENGE_RESPONSE_MSG, challenge_nr) < 0)
- exit(EXIT_FAILURE);
- /* Wait for approval */
- PARA_NOTICE_LOG("%s", "waiting for approval from server\n");
- if ((numbytes = recv_buffer(sockfd, buf, sizeof(buf))) < 0)
- exit(EXIT_FAILURE);
- PARA_INFO_LOG("++++ server info ++++\n%s\n++++ end of server "
- "info ++++\n", buf);
- /* Check if server has sent "Proceed" message */
- if (!strstr(buf, PROCEED_MSG)) {
- PARA_EMERG_LOG("%s", "authentication failed\n");
- exit(EXIT_FAILURE);
+ if (ct->status == CL_SENDING) {
+ stdin_set_defaults(&sit);
+ register_task(s, &sit.task);
+ t->error = -E_TASK_STARTED;
+ return;
}
- if (numbytes >= PROCEED_MSG_LEN + 32) {
- PARA_INFO_LOG("%s", "decrypting session key\n");
- if (para_decrypt_buffer(key_file, rc4_buf,
- (unsigned char *)buf + PROCEED_MSG_LEN + 1,
- numbytes - PROCEED_MSG_LEN - 1) < 0) {
- PARA_EMERG_LOG("%s", "error receiving rc4 key\n");
- exit(EXIT_FAILURE);
- }
- RC4_set_key(&rc4_send_key, RC4_KEY_LEN, rc4_buf);
- RC4_set_key(&rc4_recv_key, RC4_KEY_LEN, rc4_buf + RC4_KEY_LEN);
- PARA_INFO_LOG("rc4 encrytion activated: %x:%x:%x:%x\n",
- rc4_buf[0], rc4_buf[1], rc4_buf[2], rc4_buf[3]);
- crypt_function_recv = rc4_recv;
- crypt_function_send = rc4_send;
+ if (ct->status == CL_RECEIVING) {
+ stdout_set_defaults(&sot);
+ register_task(s, &sot.task);
+ t->error = -E_TASK_STARTED; return;
}
- /* send command */
- PARA_INFO_LOG("--> %s\n", command);
- if (send_buffer(sockfd, command) < 0)
- exit(EXIT_FAILURE);
- free(command);
- command = NULL;
- if (send_buffer(sockfd, EOC_MSG "\n") < 0)
- exit(EXIT_FAILURE);
- PARA_NOTICE_LOG("%s", "command sent.\n");
- received = 0;
- while ((numbytes = recv_bin_buffer(sockfd, buf, sizeof(buf) - 1)) > 0) {
- buf[numbytes] = '\0';
- if (!received && strstr(buf, AWAITING_DATA_MSG)) {
- PARA_NOTICE_LOG("%s", "sending stdin\n");
- while ((ret = read(STDIN_FILENO, buf,
- sizeof(buf))) > 0) {
- if (send_bin_buffer(sockfd, buf, ret) < 0)
- break;
- }
- PARA_NOTICE_LOG("%s", "closing connection\n");
- numbytes = 1;
- break;
- }
- received = 1;
- if (write(STDOUT_FILENO, buf, numbytes) != numbytes)
- break;
+}
+
+static struct task svt = {
+ .post_select = supervisor_post_select,
+ .status = "supervisor task"
+};
+
+/**
+ * The client program to connect to para_server.
+ *
+ * \param argc Usual argument count.
+ * \param argv Usual argument vector.
+ *
+ * When called without a paraslash command, an interactive session is started.
+ * Otherwise, the client task and the supervisor task are started. The former
+ * communicates with para_server while the latter monitors whether the client
+ * task intends to read from stdin or write to stdout.
+ *
+ * Once it has been determined whether the client command corresponds to a
+ * stdin command (addmood, addimg, ..), either the stdin task or the stdout
+ * task is set up to replace the supervisor task.
+ *
+ * \return EXIT_SUCCESS or EXIT_FAILURE
+ *
+ * \sa client_open(), stdin.c, stdout.c, para_client(1), para_server(1)
+ */
+int main(int argc, char *argv[])
+{
+ int ret;
+
+ init_random_seed_or_die();
+ sched.default_timeout.tv_sec = 1;
+
+ ret = client_parse_config(argc, argv, &ct, &client_loglevel);
+ if (ret < 0)
+ goto out;
+ if (ct->conf.complete_given)
+ print_completions();
+ if (ret == 0)
+ interactive_session(); /* does not return */
+
+ /*
+ * We add buffer tree nodes for stdin and stdout even though
+ * only one of them will be needed. This simplifies the code
+ * a bit wrt. to the buffer tree setup.
+ */
+ sit.btrn = btr_new_node(&(struct btr_node_description)
+ EMBRACE(.name = "stdin"));
+ ret = client_open(argc, argv, &ct, &client_loglevel, sit.btrn, NULL, &sched);
+ if (ret < 0)
+ goto out;
+ sot.btrn = btr_new_node(&(struct btr_node_description)
+ EMBRACE(.name = "stdout", .parent = ct->btrn));
+ register_task(&sched, &svt);
+ ret = schedule(&sched);
+out:
+ client_close(ct);
+ btr_free_node(sit.btrn);
+ btr_free_node(sot.btrn);
+ if (ret < 0) {
+ /* can not use PARA_LOG here because ct is NULL */
+ fprintf(stderr, "%s\n", para_strerror(-ret));
+ return EXIT_FAILURE;
}
- if (!numbytes)
- PARA_NOTICE_LOG("%s", "connection closed by peer\n");
- close(sockfd);
- return ret >= 0? 0: 1;
+ return EXIT_SUCCESS;
}
projects / paraslash.git / blobdiff