net.c: Remove unnecessary crypto includes.
[paraslash.git] / client.c
index a37bc7e..ec32cd4 100644 (file)
--- a/client.c
+++ b/client.c
 /*
- * Copyright (C) 1997-2007 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1997-2011 Andre Noll <maan@systemlinux.org>
  *
  * 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 <openssl/rc4.h>
+#include <stdbool.h>
+
 #include "para.h"
 #include "list.h"
 #include "sched.h"
+#include "crypt.h"
 #include "client.cmdline.h"
 #include "string.h"
 #include "stdin.h"
 #include "stdout.h"
 #include "client.h"
+#include "buffer_tree.h"
 #include "error.h"
 
 INIT_CLIENT_ERRLISTS;
 
-static struct private_client_data *pcd;
+static struct client_task *ct;
 static struct stdin_task sit;
 static struct stdout_task sot;
 
-
-INIT_STDERR_LOGGING(pcd->conf.loglevel_arg);
-
-static void client_event_handler(struct task *t)
+static void supervisor_post_select(__a_unused struct sched *s, struct task *t)
 {
-       struct private_client_data *p = t->private_data;
-
-       PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t->ret));
-       if (t->ret != -E_HANDSHAKE_COMPLETE) {
-               unregister_task(t);
-               p->eof = 1;
+       if (ct->task.error < 0) {
+               t->error = ct->task.error;
                return;
        }
-       if (p->status == CL_SENDING) {
+       if (ct->status == CL_SENDING) {
                stdin_set_defaults(&sit);
-               sit.buf = para_malloc(sit.bufsize),
                register_task(&sit.task);
-               p->inbuf = sit.buf;
-               p->in_loaded = &sit.loaded;
-               p->in_error = &sit.error;
+               t->error = -E_TASK_STARTED;
+               return;
+       }
+       if (ct->status == CL_RECEIVING) {
+               stdout_set_defaults(&sot);
+               register_task(&sot.task);
+               t->error = -E_TASK_STARTED;
                return;
        }
-       stdout_set_defaults(&sot);
-       sot.buf = p->buf;
-       sot.loaded = &p->loaded;
-       sot.input_error = &p->eof;
-       register_task(&sot.task);
 }
 
+static struct task svt = {
+       .post_select = supervisor_post_select,
+       .status = "supervisor task"
+};
+
+static int client_loglevel = LL_ERROR; /* loglevel */
+INIT_STDERR_LOGGING(client_loglevel);
+
 /**
- * the client program to connect to para_server
+ * The client program to connect to para_server.
  *
- * \param argc usual argument count
- * \param argv usual argument vector
+ * \param argc Usual argument count.
+ * \param argv Usual argument vector.
  *
  * It registers two tasks: The client task that communicates with para_server
- * and the standard out task that writes any output produced by the client task
- * to standard out.
+ * and the supervisor task that minitors 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(), stdout.c, stdout.h, para_client(1), para_server(1)
+ * \sa client_open(), stdin.c, stdout.c, para_client(1), para_server(1)
  */
 int main(int argc, char *argv[])
 {
 
        int ret;
-       struct sched s;
+       static struct sched s;
 
+       init_random_seed_or_die();
        s.default_timeout.tv_sec = 1;
        s.default_timeout.tv_usec = 0;
-       ret = client_open(argc, argv, &pcd);
-       if (ret < 0) /* can not use PARA_LOG here */
-               exit(EXIT_FAILURE);
-       pcd->task.event_handler = client_event_handler;
-       ret = schedule(&s);
+       /*
+        * 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);
        if (ret < 0)
-               PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
-       client_close(pcd);
-       return ret >= 0? EXIT_SUCCESS: EXIT_FAILURE;
+               goto out;
+       sot.btrn = btr_new_node(&(struct btr_node_description)
+               EMBRACE(.name = "stdout", .parent = ct->btrn));
+       register_task(&svt);
+       ret = schedule(&s);
+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;
+       }
+       return EXIT_SUCCESS;
 }