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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "src/core/client_config/uri_parser.h"
#include <string.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/string_util.h>
static grpc_uri *bad_uri(const char *uri_text, int pos, const char *section,
int suppress_errors) {
char *line_prefix;
int pfx_len;
if (!suppress_errors) {
gpr_asprintf(&line_prefix, "bad uri.%s: '", section);
pfx_len = strlen(line_prefix) + pos;
gpr_log(GPR_ERROR, "%s%s'", line_prefix, uri_text);
gpr_free(line_prefix);
line_prefix = gpr_malloc(pfx_len + 1);
memset(line_prefix, ' ', pfx_len);
line_prefix[pfx_len] = 0;
gpr_log(GPR_ERROR, "%s^ here", line_prefix);
gpr_free(line_prefix);
}
return NULL;
}
static char *copy_fragment(const char *src, int begin, int end) {
char *out = gpr_malloc(end - begin + 1);
memcpy(out, src + begin, end - begin);
out[end - begin] = 0;
return out;
}
grpc_uri *grpc_uri_parse(const char *uri_text, int suppress_errors) {
grpc_uri *uri;
int scheme_begin = 0;
int scheme_end = -1;
int authority_begin = -1;
int authority_end = -1;
int path_begin = -1;
int path_end = -1;
int i;
for (i = scheme_begin; uri_text[i] != 0; i++) {
if (uri_text[i] == ':') {
scheme_end = i;
break;
}
if (uri_text[i] >= 'a' && uri_text[i] <= 'z') continue;
if (uri_text[i] >= 'A' && uri_text[i] <= 'Z') continue;
if (i != scheme_begin) {
if (uri_text[i] >= '0' && uri_text[i] <= '9') continue;
if (uri_text[i] == '+') continue;
if (uri_text[i] == '-') continue;
if (uri_text[i] == '.') continue;
}
break;
}
if (scheme_end == -1) {
return bad_uri(uri_text, i, "scheme", suppress_errors);
}
if (uri_text[scheme_end + 1] == '/' && uri_text[scheme_end + 2] == '/') {
authority_begin = scheme_end + 3;
for (i = authority_begin; uri_text[i] != 0; i++) {
if (uri_text[i] == '/') {
authority_end = i;
}
if (uri_text[i] == '?') {
return bad_uri(uri_text, i, "query_not_supported", suppress_errors);
}
if (uri_text[i] == '#') {
return bad_uri(uri_text, i, "fragment_not_supported", suppress_errors);
}
}
if (authority_end == -1 && uri_text[i] == 0) {
authority_end = i;
}
if (authority_end == -1) {
return bad_uri(uri_text, i, "authority", suppress_errors);
}
/* TODO(ctiller): parse the authority correctly */
path_begin = authority_end;
} else {
path_begin = scheme_end + 1;
}
for (i = path_begin; uri_text[i] != 0; i++) {
if (uri_text[i] == '?') {
return bad_uri(uri_text, i, "query_not_supported", suppress_errors);
}
if (uri_text[i] == '#') {
return bad_uri(uri_text, i, "fragment_not_supported", suppress_errors);
}
}
path_end = i;
uri = gpr_malloc(sizeof(*uri));
memset(uri, 0, sizeof(*uri));
uri->scheme = copy_fragment(uri_text, scheme_begin, scheme_end);
uri->authority = copy_fragment(uri_text, authority_begin, authority_end);
uri->path = copy_fragment(uri_text, path_begin, path_end);
return uri;
}
void grpc_uri_destroy(grpc_uri *uri) {
if (!uri) return;
gpr_free(uri->scheme);
gpr_free(uri->authority);
gpr_free(uri->path);
gpr_free(uri);
}
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