mhd2spdy_structures.c revision 748945ec6f1c67b7efc934ab0808e1d32f2fb98d 
1/*
2    Copyright Copyright (C) 2013 Andrey Uzunov
3
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.
8
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.
13
14    You should have received a copy of the GNU General Public License
15    along with this program.  If not, see <http://www.gnu.org/licenses/>.
16*/
17
18/**
19 * @file mhd2spdy_structures.h
20 * @brief  Common functions, macros.
21 * @author Andrey Uzunov
22 */
23
24#include "mhd2spdy_structures.h"
25
26
27void
28free_uri(struct URI * uri)
29{
30  if(NULL != uri)
31  {
32    free(uri->full_uri);
33    free(uri->scheme);
34    free(uri->host_and_port);
35    free(uri->host);
36    free(uri->path);
37    free(uri->path_and_more);
38    free(uri->query);
39    free(uri->fragment);
40    uri->port = 0;
41    free(uri);
42  }
43}
44
45
46int
47init_parse_uri(regex_t * preg)
48{
49  // RFC 2396
50  // ^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?
51      /*
52        scheme    = $2
53      authority = $4
54      path      = $5
55      query     = $7
56      fragment  = $9
57      */
58
59  return regcomp(preg, "^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\\?([^#]*))?(#(.*))?", REG_EXTENDED);
60}
61
62void
63deinit_parse_uri(regex_t * preg)
64{
65  regfree(preg);
66}
67
68int
69parse_uri(regex_t * preg,
70          char * full_uri,
71          struct URI ** uri)
72{
73  int ret;
74  char *colon;
75  long long port;
76  size_t nmatch = 10;
77  regmatch_t pmatch[10];
78
79  if (0 != (ret = regexec(preg, full_uri, nmatch, pmatch, 0)))
80    return ret;
81
82  *uri = au_malloc(sizeof(struct URI));
83  if(NULL == *uri)
84    return -200;
85
86  (*uri)->full_uri = strdup(full_uri);
87
88  asprintf(&((*uri)->scheme), "%.*s",pmatch[2].rm_eo - pmatch[2].rm_so, &full_uri[pmatch[2].rm_so]);
89  asprintf(&((*uri)->host_and_port), "%.*s",pmatch[4].rm_eo - pmatch[4].rm_so, &full_uri[pmatch[4].rm_so]);
90  asprintf(&((*uri)->path), "%.*s",pmatch[5].rm_eo - pmatch[5].rm_so, &full_uri[pmatch[5].rm_so]);
91  asprintf(&((*uri)->path_and_more), "%.*s",pmatch[9].rm_eo - pmatch[5].rm_so, &full_uri[pmatch[5].rm_so]);
92  asprintf(&((*uri)->query), "%.*s",pmatch[7].rm_eo - pmatch[7].rm_so, &full_uri[pmatch[7].rm_so]);
93  asprintf(&((*uri)->fragment), "%.*s",pmatch[9].rm_eo - pmatch[9].rm_so, &full_uri[pmatch[9].rm_so]);
94
95  colon = strrchr((*uri)->host_and_port, ':');
96  if(NULL == colon)
97  {
98    (*uri)->host = strdup((*uri)->host_and_port);
99    (*uri)->port = 0;
100
101    return 0;
102  }
103
104  port = atoi(colon  + 1);
105  if(port<1 || port >= 256 * 256)
106  {
107    free_uri(*uri);
108    return -100;
109  }
110  (*uri)->port = port;
111  asprintf(&((*uri)->host), "%.*s", (int)(colon - (*uri)->host_and_port), (*uri)->host_and_port);
112
113  return 0;
114}
115
116
117void
118free_proxy(struct Proxy *proxy)
119{
120  PRINT_INFO2("free proxy called for '%s'", proxy->url);
121  if(NULL != proxy->http_body && proxy->http_body_size > 0)
122    UPDATE_STAT(glob_stat.spdy_bytes_received_and_dropped, proxy->http_body_size);
123  free(proxy->http_body);
124  free_uri(proxy->uri);
125	free(proxy->url);
126	free(proxy->http_uri);
127	free(proxy);
128}
129
130
131void *au_malloc(size_t size)
132{
133  void *new_memory;
134
135  new_memory = malloc(size);
136  if(NULL != new_memory)
137  {
138    glob_opt.global_memory += size;
139    memset(new_memory, 0, size);
140  }
141  return new_memory;
142}
143
144
145bool
146copy_buffer(const void *src, size_t src_size, void **dst, size_t *dst_size)
147{
148  if(0 == src_size)
149    return true;
150
151  if(NULL == *dst)
152		*dst = malloc(src_size);
153	else
154		*dst = realloc(*dst, src_size + *dst_size);
155	if(NULL == *dst)
156		return false;
157
158	memcpy(*dst + *dst_size, src, src_size);
159	*dst_size += src_size;
160
161  return true;
162}
163