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authorMichael Krelin <hacker@klever.net>2005-07-19 13:08:32 (UTC)
committer Michael Krelin <hacker@klever.net>2005-07-19 13:08:32 (UTC)
commit4c82851dd5d5644a89d4f269079bf901f763ee33 (patch) (unidiff)
treeb64c8b3c9a1be88e2a9c3f762272e0b4509ba7d9 /lib/util.cc
parent907343b0c973eb295bec8795902a6d49744e9174 (diff)
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initial commit of libopkele - OpenID support library
Diffstat (limited to 'lib/util.cc') (more/less context) (ignore whitespace changes)
-rw-r--r--lib/util.cc138
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diff --git a/lib/util.cc b/lib/util.cc
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1#include <errno.h>
2#include <cassert>
3#include <vector>
4#include <string>
5#include <mimetic/mimetic.h>
6#include <curl/curl.h>
7#include "opkele/util.h"
8#include "opkele/exception.h"
9
10namespace opkele {
11 using namespace std;
12
13 namespace util {
14
15 /*
16 * big numerics
17 */
18
19 BIGNUM *base64_to_bignum(const string& b64) {
20 vector<unsigned char> bin;
21 mimetic::Base64::Decoder b;
22 mimetic::decode(
23 b64.begin(),b64.end(), b,
24 back_insert_iterator<vector<unsigned char> >(bin) );
25 BIGNUM *rv = BN_bin2bn(&(bin.front()),bin.size(),0);
26 if(!rv)
27 throw failed_conversion(OPKELE_CP_ "failed to BN_bin2bn()");
28 return rv;
29 }
30
31 BIGNUM *dec_to_bignum(const string& dec) {
32 BIGNUM *rv = 0;
33 if(!BN_dec2bn(&rv,dec.c_str()))
34 throw failed_conversion(OPKELE_CP_ "failed to BN_dec2bn()");
35 return rv;
36 }
37
38 string bignum_to_base64(const BIGNUM *bn) {
39 vector<unsigned char> bin(BN_num_bytes(bn));
40 int l = BN_bn2bin(bn,&(bin.front()));
41 string rv;
42 mimetic::Base64::Encoder b(0);
43 mimetic::encode(
44 bin.begin(),bin.begin()+l, b,
45 back_insert_iterator<string>(rv) );
46 return rv;
47 }
48
49 /*
50 * w3c times
51 */
52
53 string time_to_w3c(time_t t) {
54 struct tm tm_t;
55 if(!gmtime_r(&t,&tm_t))
56 throw failed_conversion(OPKELE_CP_ "failed to BN_dec2bn()");
57 char rv[25];
58 if(!strftime(rv,sizeof(rv)-1,"%Y-%m-%dT%H:%M:%SZ",&tm_t))
59 throw failed_conversion(OPKELE_CP_ "failed to strftime()");
60 return rv;
61 }
62
63 time_t w3c_to_time(const string& w) {
64 struct tm tm_t;
65 memset(&tm_t,0,sizeof(tm_t));
66 if(
67 sscanf(
68 w.c_str(),
69 "%04d-%02d-%02dT%02d:%02d:%02dZ",
70 &tm_t.tm_year,&tm_t.tm_mon,&tm_t.tm_mday,
71 &tm_t.tm_hour,&tm_t.tm_min,&tm_t.tm_sec
72 ) != 6 )
73 throw failed_conversion(OPKELE_CP_ "failed to sscanf()");
74 tm_t.tm_mon--;
75 tm_t.tm_year-=1900;
76 time_t rv = mktime(&tm_t);
77 if(rv==(time_t)-1)
78 throw failed_conversion(OPKELE_CP_ "failed to mktime()");
79 return rv;
80 }
81
82 /*
83 *
84 */
85
86 string canonicalize_url(const string& url) {
87 string rv = url;
88 // strip leading and trailing spaces
89 string::size_type i = rv.find_first_not_of(" \t\r\n");
90 if(i==string::npos)
91 throw bad_input(OPKELE_CP_ "empty URL");
92 if(i)
93 rv.erase(0,i);
94 i = rv.find_last_not_of(" \t\r\n");
95 assert(i!=string::npos);
96 if(i<(rv.length()-1))
97 rv.erase(i+1);
98 // add missing http://
99 i = rv.find("://");
100 if(i==string::npos) { // primitive. but do we need more?
101 rv.insert(0,"http://");
102 i = sizeof("http://")-1;
103 }else{
104 i += sizeof("://")-1;
105 }
106 if(rv.find('/',i)==string::npos)
107 rv += '/';
108 return rv;
109 }
110
111 string url_encode(const string& str) {
112 char * t = curl_escape(str.c_str(),str.length());
113 if(!t)
114 throw failed_conversion(OPKELE_CP_ "failed to curl_escape()");
115 string rv(t);
116 curl_free(t);
117 return rv;
118 }
119
120 string long_to_string(long l) {
121 char rv[32];
122 int r=snprintf(rv,sizeof(rv),"%ld",l);
123 if(r<0 || r>=sizeof(rv))
124 throw failed_conversion(OPKELE_CP_ "failed to snprintf()");
125 return rv;
126 }
127
128 long string_to_long(const string& s) {
129 char *endptr = 0;
130 long rv = strtol(s.c_str(),&endptr,10);
131 if((!endptr) || endptr==s.c_str())
132 throw failed_conversion(OPKELE_CP_ "failed to strtol()");
133 return rv;
134 }
135
136 }
137
138}