6 #include <libubox/md5.h>
7 #include <libubox/utils.h>
9 #include "uclient-utils.h"
11 static const char *b64
=
12 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
14 void base64_encode(const void *inbuf
, unsigned int len
, void *outbuf
)
16 unsigned char *out
= outbuf
;
17 const uint8_t *in
= inbuf
;
21 for (i
= 0; i
< len
- pad
; i
+= 3) {
22 uint32_t in3
= (in
[0] << 16) | (in
[1] << 8) | in
[2];
25 for (k
= 3; k
>= 0; k
--) {
26 out
[k
] = b64
[in3
& 0x3f];
34 uint32_t in2
= in
[0] << (16 - 6);
39 in2
|= in
[1] << (8 - 6);
40 out
[2] = b64
[in2
& 0x3f];
46 out
[1] = b64
[in2
& 0x3f];
48 out
[0] = b64
[in2
& 0x3f];
56 int uclient_urldecode(const char *in
, char *out
, bool decode_plus
)
62 while ((c
= *(in
++))) {
64 if (!isxdigit(in
[0]) || !isxdigit(in
[1]))
69 c
= strtol(dec
, NULL
, 16);
71 } else if (decode_plus
&& c
== '+') {
83 static char hex_digit(char val
)
85 val
+= val
> 9 ? 'a' - 10 : '0';
89 void bin_to_hex(char *dest
, const void *buf
, int len
)
91 const uint8_t *data
= buf
;
94 for (i
= 0; i
< len
; i
++) {
95 *(dest
++) = hex_digit(data
[i
] >> 4);
96 *(dest
++) = hex_digit(data
[i
] & 0xf);
101 static void http_create_hash(char *dest
, const char * const * str
, int n_str
)
108 for (i
= 0; i
< n_str
; i
++) {
110 md5_hash(":", 1, &md5
);
111 md5_hash(str
[i
], strlen(str
[i
]), &md5
);
114 bin_to_hex(dest
, &hash
, sizeof(hash
));
117 void http_digest_calculate_auth_hash(char *dest
, const char *user
, const char *realm
, const char *password
)
119 const char *hash_str
[] = {
125 http_create_hash(dest
, hash_str
, ARRAY_SIZE(hash_str
));
128 void http_digest_calculate_response(char *dest
, const struct http_digest_data
*data
)
130 const char *h_a2_strings
[] = {
134 const char *resp_strings
[] = {
140 dest
, /* initialized to H(A2) first */
143 http_create_hash(dest
, h_a2_strings
, ARRAY_SIZE(h_a2_strings
));
144 http_create_hash(dest
, resp_strings
, ARRAY_SIZE(resp_strings
));