/** \file client.c the client program used to connect to para_server */
#include "para.h"
-#include "config.h"
+#include "list.h"
+#include "sched.h"
#include "client.cmdline.h"
-#include "crypt.h"
-#include "rc4.h"
-#include <openssl/rc4.h>
-#include "net.h"
#include "string.h"
+#include "stdin.h"
+#include "stdout.h"
+#include "client.h"
+#include "error.h"
-struct gengetopt_args_info args_info;
+INIT_CLIENT_ERRLISTS;
+
+static struct private_client_data *pcd;
+static struct stdin_task sit;
+static struct stdout_task sot;
/*
* client log function
void para_log(int ll, const char* fmt,...)
{
va_list argp;
- FILE *outfd;
/* ignore log message if loglevel is not high enough */
- if (ll < args_info.loglevel_arg)
+ if (pcd && ll < pcd->conf.loglevel_arg)
return;
- if (ll < WARNING)
- outfd = stdout;
- else
- outfd = stderr;
va_start(argp, fmt);
- vfprintf(stdout, fmt, argp);
+ vfprintf(stderr, fmt, argp);
va_end(argp);
}
-void get_options(int argc, char *argv[],
- char **config_file, char **key_file)
+static void client_event_handler(struct task *t)
{
- char *home;
- static char default_key_file[_POSIX_PATH_MAX] = "";
- static char default_config_file[_POSIX_PATH_MAX] = "";
- struct stat statbuf;
- int ret;
+ struct private_client_data *p = t->private_data;
- 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);
- }
- if (!args_info.config_file_given) {
- home = para_homedir();
- sprintf(default_config_file, "%s/.paraslash/client.conf",
- home);
- free(home);
+ PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t->ret));
+ if (t->ret != -E_HANDSHAKE_COMPLETE) {
+ unregister_task(t);
+ p->eof = 1;
+ return;
}
- if (!args_info.config_file_given)
- *config_file = default_config_file;
- 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);
+ if (p->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_eof = &sit.eof;
+ return;
}
- if (!ret)
- cmdline_parser_configfile(*config_file, &args_info, 0, 0, 0);
- if (!args_info.key_file_given)
- *key_file = default_key_file;
- else
- *key_file = args_info.key_file_arg;
-}
-
-static RC4_KEY rc4_recv_key;
-static RC4_KEY rc4_send_key;
-static unsigned char rc4_buf[2 * RC4_KEY_LEN];
-
-static void rc4_send(unsigned long len, const unsigned char *indata, unsigned char *outdata)
-{
- RC4(&rc4_send_key, len, indata, outdata);
-}
-
-static void rc4_recv(unsigned long len, const unsigned char *indata, unsigned char *outdata)
-{
- RC4(&rc4_recv_key, len, indata, outdata);
-}
-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 append_str(char **data, const char* append)
-{
- if (*data) {
- char *tmp = make_message("%s\n%s", *data, append);
- free(*data);
- *data = tmp;
- } else
- *data = para_strdup(append);
+ stdout_set_defaults(&sot);
+ sot.buf = p->buf;
+ sot.loaded = &p->loaded;
+ sot.input_eof = &p->eof;
+ register_task(&sot.task);
}
/*
int main(int argc, char *argv[])
{
- 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);
- }
- 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);
- }
- /* 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 (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;
- }
- /* 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;
- }
- if (!numbytes)
- PARA_NOTICE_LOG("%s", "connection closed by peer\n");
- close(sockfd);
- return ret >= 0? 0: 1;
+ int ret;
+ struct sched s;
+
+ s.default_timeout.tv_sec = 1;
+ s.default_timeout.tv_usec = 0;
+ ret = client_parse_config(argc, argv, &pcd);
+ if (ret < 0)
+ goto out;
+ pcd->task.event_handler = client_event_handler;
+ ret = client_open(pcd);
+ if (ret < 0)
+ goto out;
+ ret = sched(&s);
+ client_close(pcd);
+out:
+ if (ret < 0)
+ PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
+ return ret >= 0? EXIT_SUCCESS: EXIT_FAILURE;
}
projects / paraslash.git / blobdiff