1 /*
2 * SysDB - src/tools/sysdb/command.c
3 * Copyright (C) 2014 Sebastian 'tokkee' Harl <sh@tokkee.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
28 #if HAVE_CONFIG_H
29 # include "config.h"
30 #endif /* HAVE_CONFIG_H */
32 #include "tools/sysdb/command.h"
33 #include "tools/sysdb/input.h"
35 #include "frontend/proto.h"
36 #include "utils/error.h"
37 #include "utils/strbuf.h"
39 #include <errno.h>
41 #include <assert.h>
42 #include <ctype.h>
43 #include <string.h>
45 /*
46 * public API
47 */
49 int
50 sdb_command_print_reply(sdb_input_t *input)
51 {
52 sdb_strbuf_t *recv_buf;
53 const char *result;
54 uint32_t rcode = 0;
56 recv_buf = sdb_strbuf_create(1024);
57 if (! recv_buf)
58 return -1;
60 if (sdb_client_recv(input->client, &rcode, recv_buf) < 0)
61 rcode = UINT32_MAX;
63 if (sdb_client_eof(input->client))
64 return -1;
66 if (rcode == UINT32_MAX)
67 printf("ERROR: ");
68 result = sdb_strbuf_string(recv_buf);
69 if (result && *result)
70 printf("%s\n", result);
71 else if (rcode == UINT32_MAX) {
72 char errbuf[1024];
73 printf("%s\n", sdb_strerror(errno, errbuf, sizeof(errbuf)));
74 }
76 sdb_strbuf_destroy(recv_buf);
77 return 0;
78 } /* sdb_command_print_reply */
80 char *
81 sdb_command_exec(sdb_input_t *input)
82 {
83 const char *query;
84 uint32_t query_len;
86 char *data = NULL;
88 query = sdb_strbuf_string(input->input);
89 query_len = (uint32_t)input->query_len;
91 assert(input->query_len <= input->tokenizer_pos);
93 /* removing leading and trailing newlines */
94 while (query_len && (*query == '\n')) {
95 ++query;
96 --query_len;
97 }
98 while (query_len && (query[query_len - 1]) == '\n')
99 --query_len;
101 if (query_len) {
102 data = strndup(query, query_len);
103 /* ignore errors; we'll only hide the command from the caller */
105 sdb_client_send(input->client, CONNECTION_QUERY, query_len, query);
106 if (sdb_command_print_reply(input))
107 return NULL;
108 }
110 sdb_strbuf_skip(input->input, 0, input->query_len);
111 input->tokenizer_pos -= input->query_len;
112 input->query_len = 0;
113 return data;
114 } /* sdb_command_exec */
116 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */