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1 // Copyright 2017 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "components/physical_web/eddystone/eddystone_encoder.h" | |
6 | |
7 #include <string> | |
8 #include <vector> | |
9 | |
10 #include "url/gurl.h" | |
11 | |
12 namespace { | |
13 const char* kPrefixes[] = {"http://www.", "https://www.", "http://", | |
14 "https://"}; | |
15 const size_t kNumPrefixes = sizeof(kPrefixes) / sizeof(char*); | |
16 | |
17 const char* kSuffixes[] = {".com/", ".org/", ".edu/", ".net/", ".info/", | |
18 ".biz/", ".gov/", ".com", ".org", ".edu", | |
19 ".net", ".info", ".biz", ".gov"}; | |
20 const size_t kNumSuffixes = sizeof(kSuffixes) / sizeof(char*); | |
21 } | |
22 | |
23 namespace physical_web { | |
24 int EncodeUrl(const std::string& url, std::vector<uint8_t>* encoded_url) { | |
mattreynolds
2017/03/09 22:11:30
Add a check for encoded_url == NULL.
iankc
2017/03/09 23:17:50
Done.
| |
25 /* | |
26 * Sanatize url. | |
mattreynolds
2017/03/09 22:11:31
Sanitize URL.
iankc
2017/03/09 23:17:50
Done.
| |
27 */ | |
28 if (url.empty()) { | |
29 return -1; | |
mattreynolds
2017/03/09 22:11:31
Define these error codes as constants in eddystone
iankc
2017/03/09 23:17:50
Done.
| |
30 } | |
31 | |
32 GURL gurl(url); | |
33 if (!gurl.is_valid()) { | |
34 return -2; | |
35 } | |
36 | |
37 if (gurl.HostIsIPAddress() || !gurl.SchemeIsHTTPOrHTTPS()) { | |
38 return -3; | |
39 } | |
40 | |
41 /* | |
42 * Necessary Declarations. | |
43 */ | |
44 const char* raw_url_position = url.c_str(); | |
45 | |
46 static bool prefix_lengths_loaded = false; | |
mattreynolds
2017/03/09 22:11:30
How about "lengths_initialized"? (we aren't really
iankc
2017/03/09 23:17:50
Done.
| |
47 static size_t prefix_lengths[kNumPrefixes]; | |
48 if (!prefix_lengths_loaded) { | |
49 for (size_t i = 0; i < kNumPrefixes; i++) { | |
50 prefix_lengths[i] = strlen(kPrefixes[i]); | |
51 } | |
52 prefix_lengths_loaded = true; | |
53 } | |
54 | |
55 static bool suffix_lengths_loaded = false; | |
mattreynolds
2017/03/09 22:11:30
You can use the same bool for both array initializ
iankc
2017/03/09 23:17:50
Done.
| |
56 static size_t suffix_lengths[kNumSuffixes]; | |
57 if (!suffix_lengths_loaded) { | |
58 for (size_t i = 0; i < kNumSuffixes; i++) { | |
59 suffix_lengths[i] = strlen(kSuffixes[i]); | |
60 } | |
61 suffix_lengths_loaded = true; | |
62 } | |
63 /* | |
64 * Handle prefix. | |
65 */ | |
66 for (size_t i = 0; i < kNumPrefixes; i++) { | |
67 size_t prefix_len = prefix_lengths[i]; | |
68 if (strncmp(raw_url_position, kPrefixes[i], prefix_len) == 0) { | |
69 encoded_url->push_back(i); | |
70 raw_url_position += prefix_len; | |
71 break; | |
72 } | |
73 } | |
74 | |
75 /* | |
76 * Handle suffixes. | |
77 */ | |
78 while (*raw_url_position) { | |
79 /* check for suffix match */ | |
80 size_t i; | |
81 for (i = 0; i < kNumSuffixes; i++) { | |
82 size_t suffix_len = suffix_lengths[i]; | |
83 if (strncmp(raw_url_position, kSuffixes[i], suffix_len) == 0) { | |
84 encoded_url->push_back(i); | |
85 raw_url_position += suffix_len; | |
86 break; /* from the for loop for checking against suffixes */ | |
87 } | |
88 } | |
89 /* This is the default case where we've got an ordinary character which | |
90 * doesn't match a suffix. */ | |
91 if (i == kNumSuffixes) { | |
92 encoded_url->push_back(*raw_url_position++); | |
93 } | |
94 } | |
95 | |
96 return encoded_url->size(); | |
97 } | |
98 } | |
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