2 * Copyright (C) 2013 Thadeu Lima de Souza Cascardo <cascardo@minaslivre.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 #include "rnet_message.h"
27 #define MAX(a,b) (a >= b) ? a : b
30 int rnet_message_expand(struct rnet_message **message, size_t len)
32 struct rnet_message *msg = *message;
33 struct rnet_message *nmsg;
36 nmsg = realloc(msg, sizeof(*msg) + len);
46 struct rnet_message * rnet_message_new(void)
48 struct rnet_message *msg = NULL;
50 r = rnet_message_expand(&msg, 1118);
56 void rnet_message_del(struct rnet_message *message)
61 int rnet_message_strip(struct rnet_message *message, size_t len)
63 if (len > message->len)
66 memmove(message->buffer, message->buffer + len, message->len);
70 static int add_field(struct rnet_message **message, char *key, int klen,
75 struct rnet_message *msg = *message;
76 if ((msg->alen - msg->len) < (klen + vlen + 3)) {
77 if (rnet_message_expand(message, MAX(msg->len, klen + vlen + 3)))
81 buffer = msg->buffer + msg->len;
82 if (klen > 0x7f || klen < 0)
84 if (vlen > 0x7fff || vlen < 0)
86 buffer[0] = klen & 0x7f;
91 memcpy(buffer, key, klen);
95 buffer[0] = (vlen >> 8) & 0x7f;
96 buffer[1] = vlen & 0xff;
100 buffer[0] = vlen & 0x7f;
104 memcpy(buffer, val, vlen);
110 int rnet_message_add_u32(struct rnet_message **msg, char *key, uint32_t val)
112 uint32_t nval = htonl(val);
113 return add_field(msg, key, strlen(key), (char *) &nval, sizeof(val));
116 int rnet_message_add_ascii(struct rnet_message **msg, char *key, char *val)
118 return add_field(msg, key, strlen(key), val, strlen(val));
121 int rnet_message_add_u8(struct rnet_message **msg, char *key, uint8_t val)
123 return add_field(msg, key, strlen(key), (char *) &val, sizeof(val));
126 int rnet_message_add_u16(struct rnet_message **msg, char *key, uint16_t val)
128 uint16_t nval = htons(val);
129 return add_field(msg, key, strlen(key), (char *) &nval, sizeof(val));
132 int rnet_message_add_u64(struct rnet_message **msg, char *key, uint64_t val)
134 uint64_t nval = htobe64(val);
135 return add_field(msg, key, strlen(key), (char *) &nval, sizeof(val));
138 int rnet_message_add_buffer(struct rnet_message **msg, char *key,
139 char *buffer, size_t len)
141 return add_field(msg, key, strlen(key), buffer, len);
144 int rnet_message_parse(struct rnet_message *msg, char *skey,
145 char** value, int *vlen)
147 char * buffer = msg->buffer;
148 size_t len = msg->len;
154 /* skip first byte */
157 j = (unsigned char)buffer[i];
166 j = (unsigned char)buffer[i];
169 j = j << 8 | (unsigned char)buffer[i++];
173 if (strlen(skey) == klen && !strncasecmp(key, skey, klen))