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  • Committer: Monty Taylor
  • Date: 2010-08-12 20:27:32 UTC
  • mto: (1720.1.5 build)
  • mto: This revision was merged to the branch mainline in revision 1722.
  • Revision ID: mordred@inaugust.com-20100812202732-9kzchbkvkyki4n3u
Merged libdrizzle directly into tree.

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examples/proxy.c
 
1
/*
 
2
 * Drizzle Client & Protocol Library
 
3
 *
 
4
 * Copyright (C) 2008 Eric Day (eday@oddments.org)
 
5
 * All rights reserved.
 
6
 *
 
7
 * Use and distribution licensed under the BSD license.  See
 
8
 * the COPYING file in this directory for full text.
 
9
 */
 
10
 
 
11
#include <errno.h>
 
12
#include <stdio.h>
 
13
#include <stdlib.h>
 
14
#include <unistd.h>
 
15
 
 
16
#include <libdrizzle/drizzle_client.h>
 
17
#include <libdrizzle/drizzle_server.h>
 
18
 
 
19
#define DRIZZLE_RETURN_CHECK(__ret, __function, __drizzle) \
 
20
{ \
 
21
  if ((__ret) != DRIZZLE_RETURN_OK) \
 
22
    DRIZZLE_RETURN_ERROR(__function, __drizzle) \
 
23
}
 
24
 
 
25
#define DRIZZLE_RETURN_ERROR(__function, __drizzle) \
 
26
{ \
 
27
  printf(__function ":%s\n", drizzle_error(__drizzle)); \
 
28
  return; \
 
29
}
 
30
 
 
31
static void proxy(drizzle_st *drizzle, drizzle_con_st *server,
 
32
                  drizzle_con_st *client, drizzle_result_st *server_result,
 
33
                  drizzle_result_st *client_result, drizzle_column_st *column);
 
34
 
 
35
int main(int argc, char *argv[])
 
36
{
 
37
  int c;
 
38
  uint32_t count= 0;
 
39
  const char *server_host= NULL;
 
40
  const char *client_host= NULL;
 
41
  bool server_mysql= false;
 
42
  bool client_mysql= false;
 
43
  in_port_t server_port= 0;
 
44
  in_port_t client_port= 0;
 
45
  drizzle_verbose_t verbose= DRIZZLE_VERBOSE_NEVER;
 
46
  drizzle_return_t ret;
 
47
  drizzle_st drizzle;
 
48
  drizzle_con_st con_listen;
 
49
  drizzle_con_st server;
 
50
  drizzle_con_st client;
 
51
  drizzle_result_st server_result;
 
52
  drizzle_result_st client_result;
 
53
  drizzle_column_st column;
 
54
 
 
55
  while((c = getopt(argc, argv, "c:h:H:mMp:P:v")) != -1)
 
56
  {
 
57
    switch(c)
 
58
    {
 
59
    case 'c':
 
60
      count= (uint32_t)atoi(optarg);
 
61
      break;
 
62
 
 
63
    case 'h':
 
64
      server_host= optarg;
 
65
      break;
 
66
 
 
67
    case 'H':
 
68
      client_host= optarg;
 
69
      break;
 
70
 
 
71
    case 'm':
 
72
      server_mysql= true;
 
73
      break;
 
74
 
 
75
    case 'M':
 
76
      client_mysql= true;
 
77
      break;
 
78
 
 
79
    case 'p':
 
80
      server_port= (in_port_t)atoi(optarg);
 
81
      break;
 
82
 
 
83
    case 'P':
 
84
      client_port= (in_port_t)atoi(optarg);
 
85
      break;
 
86
 
 
87
    case 'v':
 
88
      verbose++;
 
89
      break;
 
90
 
 
91
    default:
 
92
      printf("\nusage: %s [-c <count>] [-h <host>] [-H <host>] [-m] [-M] "
 
93
             "[-p <port>] [-p <port>] [-v]\n", argv[0]);
 
94
      printf("\t-c <count> - Number of connections to accept before exiting\n");
 
95
      printf("\t-h <host>  - Host to listen on\n");
 
96
      printf("\t-H <host>  - Host to connect to\n");
 
97
      printf("\t-m         - Use MySQL protocol for incoming connections\n");
 
98
      printf("\t-M         - Use MySQL protocol for outgoing connectionsn\n");
 
99
      printf("\t-p <port>  - Port to listen on\n");
 
100
      printf("\t-P <port>  - Port to connect to\n");
 
101
      printf("\t-v         - Increase verbosity level\n");
 
102
      return 1;
 
103
    }
 
104
  }
 
105
 
 
106
  if (drizzle_create(&drizzle) == NULL)
 
107
  {
 
108
    printf("drizzle_create:NULL\n");
 
109
    return 1;
 
110
  }
 
111
 
 
112
  drizzle_add_options(&drizzle, DRIZZLE_FREE_OBJECTS);
 
113
  drizzle_set_verbose(&drizzle, verbose);
 
114
 
 
115
  if (drizzle_con_create(&drizzle, &con_listen) == NULL)
 
116
  {
 
117
    printf("drizzle_con_create:NULL\n");
 
118
    return 1;
 
119
  }
 
120
 
 
121
  drizzle_con_add_options(&con_listen, DRIZZLE_CON_LISTEN);
 
122
  drizzle_con_set_tcp(&con_listen, server_host, server_port);
 
123
 
 
124
  if (server_mysql)
 
125
    drizzle_con_add_options(&con_listen, DRIZZLE_CON_MYSQL);
 
126
 
 
127
  if (drizzle_con_listen(&con_listen) != DRIZZLE_RETURN_OK)
 
128
  {
 
129
    printf("drizzle_con_listen:%s\n", drizzle_error(&drizzle));
 
130
    return 1;
 
131
  }
 
132
 
 
133
  while (1)
 
134
  {
 
135
    (void)drizzle_con_accept(&drizzle, &server, &ret);
 
136
    if (ret != DRIZZLE_RETURN_OK)
 
137
    {
 
138
      printf("drizzle_con_accept:%s\n", drizzle_error(&drizzle));
 
139
      return 1;
 
140
    }
 
141
 
 
142
    if (drizzle_con_create(&drizzle, &client) == NULL)
 
143
    {
 
144
      printf("drizzle_con_create:NULL\n");
 
145
      return 1;
 
146
    }
 
147
 
 
148
    drizzle_con_add_options(&client,
 
149
                            DRIZZLE_CON_RAW_PACKET | DRIZZLE_CON_RAW_SCRAMBLE);
 
150
    if (client_mysql)
 
151
      drizzle_con_add_options(&client, DRIZZLE_CON_MYSQL);
 
152
    drizzle_con_set_tcp(&client, client_host, client_port);
 
153
 
 
154
    ret= drizzle_con_connect(&client);
 
155
    if (ret != DRIZZLE_RETURN_OK)
 
156
    {
 
157
      printf("drizzle_con_connect:%s\n", drizzle_error(&drizzle));
 
158
      return 1;
 
159
    }
 
160
 
 
161
    proxy(&drizzle, &server, &client, &server_result, &client_result, &column);
 
162
 
 
163
    drizzle_con_free(&client);
 
164
    drizzle_con_free(&server);
 
165
 
 
166
    if (count > 0)
 
167
    {
 
168
      count--;
 
169
 
 
170
      if (count == 0)
 
171
        break;
 
172
    }
 
173
  }
 
174
 
 
175
  drizzle_con_free(&con_listen);
 
176
  drizzle_free(&drizzle);
 
177
 
 
178
  return 0;
 
179
}
 
180
 
 
181
static void proxy(drizzle_st *drizzle, drizzle_con_st *server,
 
182
                  drizzle_con_st *client, drizzle_result_st *server_result,
 
183
                  drizzle_result_st *client_result, drizzle_column_st *column)
 
184
{
 
185
  drizzle_return_t ret;
 
186
  drizzle_command_t command;
 
187
  const uint8_t *data;
 
188
  size_t offset;
 
189
  size_t size;
 
190
  size_t total;
 
191
  uint64_t row;
 
192
  bool row_break;
 
193
  drizzle_field_t field;
 
194
 
 
195
  /* Handshake packets. */
 
196
  ret= drizzle_handshake_server_read(client);
 
197
  DRIZZLE_RETURN_CHECK(ret, "drizzle_handshake_server_read", drizzle)
 
198
 
 
199
  drizzle_con_copy_handshake(server, client);
 
200
 
 
201
  ret= drizzle_handshake_server_write(server);
 
202
  DRIZZLE_RETURN_CHECK(ret, "drizzle_handshake_server_write", drizzle)
 
203
 
 
204
  ret= drizzle_handshake_client_read(server);
 
205
  DRIZZLE_RETURN_CHECK(ret, "drizzle_handshake_client_read", drizzle)
 
206
 
 
207
  drizzle_con_copy_handshake(client, server);
 
208
 
 
209
  ret= drizzle_handshake_client_write(client);
 
210
  DRIZZLE_RETURN_CHECK(ret, "drizzle_handshake_client_write", drizzle)
 
211
 
 
212
  (void)drizzle_result_read(client, client_result, &ret);
 
213
  DRIZZLE_RETURN_CHECK(ret, "drizzle_result_read", drizzle)
 
214
 
 
215
  drizzle_con_set_status(server, drizzle_con_status(client));
 
216
 
 
217
  if (drizzle_result_clone(server, server_result, client_result) == NULL)
 
218
    DRIZZLE_RETURN_ERROR("drizzle_result_clone", drizzle)
 
219
 
 
220
  ret= drizzle_result_write(server, server_result, true);
 
221
  DRIZZLE_RETURN_CHECK(ret, "drizzle_result_write", drizzle)
 
222
 
 
223
  if (drizzle_result_error_code(client_result) != 0 ||
 
224
      drizzle_result_eof(client_result))
 
225
  {
 
226
    /* There was a handshake or authentication error. */
 
227
    return;
 
228
  }
 
229
 
 
230
  drizzle_con_add_options(client, DRIZZLE_CON_READY);
 
231
 
 
232
  /* Command loop. */
 
233
  while (1)
 
234
  {
 
235
    drizzle_result_free(server_result);
 
236
    drizzle_result_free(client_result);
 
237
 
 
238
    while (1)
 
239
    {
 
240
      data= drizzle_con_command_read(server, &command, &offset, &size, &total,
 
241
                                     &ret);
 
242
      if (ret == DRIZZLE_RETURN_LOST_CONNECTION)
 
243
        return;
 
244
 
 
245
      DRIZZLE_RETURN_CHECK(ret, "drizzle_con_command_read", drizzle)
 
246
 
 
247
      (void)drizzle_con_command_write(client, NULL, command, data, size, total,
 
248
                                      &ret);
 
249
      DRIZZLE_RETURN_CHECK(ret, "drizzle_con_command_write", drizzle)
 
250
 
 
251
      if ((offset + size) == total)
 
252
        break;
 
253
    }
 
254
 
 
255
    if (command == DRIZZLE_COMMAND_QUIT)
 
256
      return;
 
257
    else if (command == DRIZZLE_COMMAND_FIELD_LIST)
 
258
    {
 
259
      if (drizzle_result_create(client, client_result) == NULL)
 
260
        DRIZZLE_RETURN_ERROR("drizzle_result_create", drizzle)
 
261
 
 
262
      if (drizzle_result_create(server, server_result) == NULL)
 
263
        DRIZZLE_RETURN_ERROR("drizzle_result_create", drizzle)
 
264
    }
 
265
    else
 
266
    {
 
267
      (void)drizzle_result_read(client, client_result, &ret);
 
268
      DRIZZLE_RETURN_CHECK(ret, "drizzle_result_read", drizzle)
 
269
 
 
270
      drizzle_con_set_status(server, drizzle_con_status(client));
 
271
      if (drizzle_result_clone(server, server_result, client_result) == NULL)
 
272
        DRIZZLE_RETURN_ERROR("drizzle_result_clone", drizzle)
 
273
 
 
274
      if (drizzle_result_column_count(client_result) == 0)
 
275
      {
 
276
        /* Simple result with no column, row, or field data. */
 
277
        ret= drizzle_result_write(server, server_result, true);
 
278
        DRIZZLE_RETURN_CHECK(ret, "drizzle_result_write", drizzle)
 
279
 
 
280
        continue;
 
281
      }
 
282
 
 
283
      ret= drizzle_result_write(server, server_result, false);
 
284
      DRIZZLE_RETURN_CHECK(ret, "drizzle_result_write", drizzle)
 
285
    }
 
286
 
 
287
    /* Columns. */
 
288
    while (1)
 
289
    {
 
290
      if (drizzle_column_read(client_result, column, &ret) == NULL)
 
291
      {
 
292
        DRIZZLE_RETURN_CHECK(ret, "drizzle_column_read", drizzle)
 
293
        break;
 
294
      }
 
295
 
 
296
      DRIZZLE_RETURN_CHECK(ret, "drizzle_column_read", drizzle)
 
297
 
 
298
      ret= drizzle_column_write(server_result, column);
 
299
      DRIZZLE_RETURN_CHECK(ret, "drizzle_column_write", drizzle)
 
300
 
 
301
      drizzle_column_free(column);
 
302
    }
 
303
 
 
304
    drizzle_con_set_status(server, drizzle_con_status(client));
 
305
    drizzle_result_set_eof(server_result, true);
 
306
 
 
307
    if (command == DRIZZLE_COMMAND_FIELD_LIST)
 
308
    {
 
309
      ret= drizzle_result_write(server, server_result, true);
 
310
      DRIZZLE_RETURN_CHECK(ret, "drizzle_result_write", drizzle)
 
311
      continue;
 
312
    }
 
313
    else
 
314
    {
 
315
      ret= drizzle_result_write(server, server_result, false);
 
316
      DRIZZLE_RETURN_CHECK(ret, "drizzle_result_write", drizzle)
 
317
    }
 
318
 
 
319
    /* Rows. */
 
320
    while (1)
 
321
    {
 
322
      row= drizzle_row_read(client_result, &ret);
 
323
      DRIZZLE_RETURN_CHECK(ret, "drizzle_row_read", drizzle)
 
324
 
 
325
      if (row == 0)
 
326
        break;
 
327
 
 
328
      drizzle_result_set_row_size(server_result,
 
329
                                  drizzle_result_row_size(client_result));
 
330
 
 
331
      ret= drizzle_row_write(server_result);
 
332
      DRIZZLE_RETURN_CHECK(ret, "drizzle_row_write", drizzle)
 
333
 
 
334
      /* Fields. */
 
335
      row_break= false;
 
336
      while (row_break == false)
 
337
      {
 
338
        field= drizzle_field_read(client_result, &offset, &size, &total, &ret);
 
339
        if (ret == DRIZZLE_RETURN_ROW_END)
 
340
          break;
 
341
        else if (ret == DRIZZLE_RETURN_ROW_BREAK)
 
342
        {
 
343
          if (size == 0)
 
344
            break;
 
345
 
 
346
          row_break= true;
 
347
        }
 
348
        else
 
349
          DRIZZLE_RETURN_CHECK(ret, "drizzle_field_read", drizzle)
 
350
 
 
351
        ret= drizzle_field_write(server_result, field, size, total);
 
352
        DRIZZLE_RETURN_CHECK(ret, "drizzle_field_write", drizzle)
 
353
      }
 
354
    }
 
355
 
 
356
    ret= drizzle_result_write(server, server_result, true);
 
357
    DRIZZLE_RETURN_CHECK(ret, "drizzle_result_write", drizzle)
 
358
  }
 
359
}