freeswitch/src/mod/applications/mod_http_cache/common.c

136 lines
2.9 KiB
C

/*
* common.c for FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2013-2014, Grasshopper
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is common.c for FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is Grasshopper
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Chris Rienzo <chris.rienzo@grasshopper.com>
*
* common.c - Functions common to the store provider
*
*/
#include <switch.h>
/**
* Reverse string substring search
*/
static char *my_strrstr(const char *haystack, const char *needle)
{
char *s;
size_t needle_len;
size_t haystack_len;
if (zstr(haystack)) {
return NULL;
}
if (zstr(needle)) {
return (char *)haystack;
}
needle_len = strlen(needle);
haystack_len = strlen(haystack);
if (needle_len > haystack_len) {
return NULL;
}
s = (char *)(haystack + haystack_len - needle_len);
do {
if (!strncmp(s, needle, needle_len)) {
return s;
}
} while (s-- != haystack);
return NULL;
}
void parse_url(char *url, const char *base_domain, const char *default_base_domain, char **bucket, char **object)
{
char *bucket_start = NULL;
char *bucket_end;
char *object_start;
char *p;
char base_domain_match[1024];
*bucket = NULL;
*object = NULL;
if (zstr(url)) {
return;
}
/* expect: http(s)://bucket.foo-bar.s3.amazonaws.com/object */
if (!strncasecmp(url, "https://", 8)) {
bucket_start = url + 8;
} else if (!strncasecmp(url, "http://", 7)) {
bucket_start = url + 7;
}
if (zstr(bucket_start)) { /* invalid URL */
return;
}
if (zstr(base_domain)) {
base_domain = default_base_domain;
}
switch_snprintf(base_domain_match, 1024, ".%s", base_domain);
bucket_end = my_strrstr(bucket_start, base_domain_match);
if (!bucket_end) { /* invalid URL */
return;
}
*bucket_end = '\0';
object_start = strchr(bucket_end + 1, '/');
if (!object_start) { /* invalid URL */
return;
}
object_start++;
if (zstr(bucket_start) || zstr(object_start)) { /* invalid URL */
return;
}
/* ignore the query string from the end of the URL */
if ((p = strchr(object_start, '&'))) {
*p = '\0';
}
*bucket = bucket_start;
*object = object_start;
}
/* For Emacs:
* Local Variables:
* mode:c
* indent-tabs-mode:t
* tab-width:4
* c-basic-offset:4
* End:
* For VIM:
* vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet
*/