1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
2 *
3 * Libmemcached library
4 *
5 * Copyright (C) 2011 Data Differential, http://datadifferential.com/
6 * Copyright (C) 2006-2009 Brian Aker All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
10 * met:
11 *
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * * Redistributions in binary form must reproduce the above
16 * copyright notice, this list of conditions and the following disclaimer
17 * in the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * * The names of its contributors may not be used to endorse or
21 * promote products derived from this software without specific prior
22 * written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
28 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 */
37
38 /*
39 I debated about putting this in the client library since it does an
40 action I don't really believe belongs in the library.
41
42 Frankly its too damn useful not to be here though.
43 */
44
45 #include <libmemcached/common.h>
46
memcached_servers_parse(const char * server_strings)47 memcached_server_list_st memcached_servers_parse(const char *server_strings)
48 {
49 char *string;
50 const char *begin_ptr;
51 const char *end_ptr;
52 memcached_server_st *servers= NULL;
53 memcached_return_t rc;
54
55 WATCHPOINT_ASSERT(server_strings);
56
57 end_ptr= server_strings + strlen(server_strings);
58
59 for (begin_ptr= server_strings, string= (char *)index(server_strings, ',');
60 begin_ptr != end_ptr;
61 string= (char *)index(begin_ptr, ','))
62 {
63 char buffer[HUGE_STRING_LEN];
64 char *ptr, *ptr2;
65 uint32_t weight= 0;
66
67 if (string)
68 {
69 memcpy(buffer, begin_ptr, (size_t) (string - begin_ptr));
70 buffer[(unsigned int)(string - begin_ptr)]= 0;
71 begin_ptr= string+1;
72 }
73 else
74 {
75 size_t length= strlen(begin_ptr);
76 memcpy(buffer, begin_ptr, length);
77 buffer[length]= 0;
78 begin_ptr= end_ptr;
79 }
80
81 ptr= index(buffer, ':');
82
83 in_port_t port= 0;
84 if (ptr)
85 {
86 ptr[0]= 0;
87
88 ptr++;
89
90 errno= 0;
91 port= (in_port_t) strtoul(ptr, (char **)NULL, 10);
92 if (errno != 0)
93 {
94 memcached_server_free(servers);
95 return NULL;
96 }
97
98 ptr2= index(ptr, ' ');
99 if (! ptr2)
100 ptr2= index(ptr, ':');
101
102 if (ptr2)
103 {
104 ptr2++;
105 errno= 0;
106 weight= uint32_t(strtoul(ptr2, (char **)NULL, 10));
107 if (errno != 0)
108 {
109 memcached_server_free(servers);
110 return NULL;
111 }
112 }
113 }
114
115 servers= memcached_server_list_append_with_weight(servers, buffer, port, weight, &rc);
116
117 if (isspace(*begin_ptr))
118 {
119 begin_ptr++;
120 }
121 }
122
123 return servers;
124 }
125