buffer_tree: Add code to splice out a node of the buffer tree.
[paraslash.git] / client.c
1 /*
2 * Copyright (C) 1997-2009 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 /** \file client.c the client program used to connect to para_server */
8
9 #include <regex.h>
10 #include <openssl/rc4.h>
11 #include <stdbool.h>
12
13 #include "para.h"
14 #include "list.h"
15 #include "sched.h"
16 #include "crypt.h"
17 #include "client.cmdline.h"
18 #include "string.h"
19 #include "stdin.h"
20 #include "stdout.h"
21 #include "client.h"
22 #include "error.h"
23
24 INIT_CLIENT_ERRLISTS;
25
26 static struct client_task *ct;
27 static struct stdin_task sit;
28 static struct stdout_task sot;
29
30 static void supervisor_post_select(__a_unused struct sched *s, struct task *t)
31 {
32 if (ct->task.error < 0) {
33 t->error = ct->task.error;
34 return;
35 }
36 if (ct->status == CL_SENDING) {
37 stdin_set_defaults(&sit);
38 sit.buf = para_malloc(sit.bufsize),
39 register_task(&sit.task);
40 ct->inbuf = sit.buf;
41 ct->in_loaded = &sit.loaded;
42 ct->in_error = &sit.task.error;
43 t->error = -E_TASK_STARTED;
44 return;
45 }
46 if (ct->status == CL_RECEIVING) {
47 stdout_set_defaults(&sot);
48 sot.bufp = &ct->buf;
49 sot.loaded = &ct->loaded;
50 sot.input_error = &ct->task.error;
51 register_task(&sot.task);
52 t->error = -E_TASK_STARTED;
53 return;
54 }
55 }
56
57 static struct task svt = {
58 .post_select = supervisor_post_select,
59 .status = "supervisor task"
60 };
61
62 static int client_loglevel; /* loglevel */
63 INIT_STDERR_LOGGING(client_loglevel);
64
65
66 /**
67 * The client program to connect to para_server.
68 *
69 * \param argc Usual argument count.
70 * \param argv Usual argument vector.
71 *
72 * It registers two tasks: The client task that communicates with para_server
73 * and the standard out task that writes any output produced by the client task
74 * to standard out.
75 *
76 * \return EXIT_SUCCESS or EXIT_FAILURE
77 *
78 * \sa client_open(), stdout.c, stdout.h, para_client(1), para_server(1)
79 */
80 int main(int argc, char *argv[])
81 {
82
83 int ret;
84 static struct sched s;
85
86 init_random_seed_or_die();
87 s.default_timeout.tv_sec = 1;
88 s.default_timeout.tv_usec = 0;
89 ret = client_open(argc, argv, &ct, &client_loglevel);
90 if (ret < 0) /* can not use PARA_LOG here because ct is NULL */
91 exit(EXIT_FAILURE);
92 register_task(&svt);
93 ret = schedule(&s);
94 if (ret < 0)
95 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
96 client_close(ct);
97 return ret >= 0? EXIT_SUCCESS: EXIT_FAILURE;
98 }