File: client.c

package info (click to toggle)
bld 0.3.4.1-4
  • links: PTS
  • area: main
  • in suites: buster, jessie, jessie-kfreebsd, squeeze, stretch, wheezy
  • size: 576 kB
  • ctags: 268
  • sloc: ansic: 2,333; sh: 175; makefile: 157; perl: 135; python: 36
file content (130 lines) | stat: -rw-r--r-- 4,233 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
/*-
 * Copyright (c) 2004 Free (Olivier Beyssac)
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */
#include <ctype.h>
#include <sys/select.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include "options.h"
#include "client.h"
#include "utils.h"
#include "net.h"


#define timeout_read(sd,buf,rd,errorcode) \
  do {                                                   \
    struct timeval tv;                                   \
    fd_set rset;                                         \
                                                         \
    /* Handle timeout */                                 \
    tv.tv_sec = opt.notify_timeout;                      \
    tv.tv_usec = 0;                                      \
    FD_ZERO(&rset);                                      \
    FD_SET(sd, &rset);                                   \
    net_socket_set_nb(sd);                               \
    if ((select(sd + 1, &rset, NULL, NULL, &tv)) <= 0) { \
      close(sd);                                         \
      return errorcode;                                  \
    }                                                    \
                                                         \
    if ((rd = read(sd, &buf, sizeof(buf))) <= 0) {       \
      close(sd);                                         \
      return errorcode;                                  \
    }                                                    \
  } while (0)


extern struct options opt;

/* Connect to host:port and return a socket descriptor if success,
   -1 otherwise */
extern int client_connect(const char *host, const char *port)
{
  int sd;
  char buf[MAX_CMD_LEN];
  ssize_t rd;
  
  if ((sd = net_client_sock_create(host, port)) == -1)
    return -1;

  /* Read banner and return -1 if error/timeout */
  timeout_read(sd, buf, rd, -1);
  
  return sd;
}


/* Send a command and return the result code or -1 */
extern int client_send_cmdi(const int sd, const int cmd, const char *value)
{
  char *buf;

  if ((buf = client_send_cmdc(sd, cmd, value)) == NULL)
    return -1;

  if (!isdigit(buf[0]) || !isdigit(buf[1]) || !isdigit(buf[2]))
    return -1;

  return (buf[0] - '0') * 100 + (buf[1] - '0') * 10 + buf[2] - '0';
}


/* Send a command and return the resulting message line or NULL */
extern char *client_send_cmdc(const int sd, const int cmd, const char *value)
{
  static char buf[MAX_CMD_LEN];
  ssize_t rd;

  switch (cmd) {
  case CMD_SUBMIT:
    sprintf(buf, "ip=%s\r\n", value);
    break;
  case CMD_INSERT:
    sprintf(buf, "ipbl=%s\r\n", value);
    break;
  case CMD_DECR:
    sprintf(buf, "ipdecr=%s\r\n", value);
    break;
  case CMD_QUERY:
  default:
    sprintf(buf, "ip?=%s\r\n", value);
  }
  
  write(sd, buf, strlen(buf));

  /* Read and return NULL if timeout/error */
  timeout_read(sd, buf, rd, NULL);
  
  if (rd < 2) {
    return NULL;
  }
  buf[rd-2] = '\0';

  return buf;
}