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Local base64 decoder

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This commit is contained in:
Andreas Öman 2010-06-23 22:10:14 +00:00
parent 0a6bc7653a
commit 9bb63f3dcc
3 changed files with 49 additions and 3 deletions
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4
src/http.c
View file

@ -29,8 +29,6 @@
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <libavutil/base64.h>
#include "tvhead.h"
#include "tcp.h"
#include "http.h"
@ -471,7 +469,7 @@ process_request(http_connection_t *hc, htsbuf_queue_t *spill)
/* Extract authorization */
if((v = http_arg_get(&hc->hc_args, "Authorization")) != NULL) {
if((n = http_tokenize(v, argv, 2, -1)) == 2) {
n = av_base64_decode(authbuf, argv[1], sizeof(authbuf) - 1);
n = base64_decode(authbuf, argv[1], sizeof(authbuf) - 1);
authbuf[n] = 0;
if((n = http_tokenize((char *)authbuf, argv, 2, ':')) == 2) {
hc->hc_username = strdup(argv[0]);

2
src/tvhead.h
View file

@ -838,4 +838,6 @@ void hexdump(const char *pfx, const uint8_t *data, int len);
uint32_t crc32(uint8_t *data, size_t datalen, uint32_t crc);
int base64_decode(uint8_t *out, const char *in, int out_size);
#endif /* TV_HEAD_H */

46
src/utils.c
View file

@ -90,3 +90,49 @@ hexdump(const char *pfx, const uint8_t *data, int len)
printf("%02x.", data[i]);
printf("\n");
}
/**
* @file
* @brief Base64 encode/decode
* @author Ryan Martell <rdm4@martellventures.com> (with lots of Michael)
*/
/* ---------------- private code */
static const uint8_t map2[] =
{
0x3e, 0xff, 0xff, 0xff, 0x3f, 0x34, 0x35, 0x36,
0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x01,
0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11,
0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1a, 0x1b,
0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23,
0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b,
0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33
};
int
base64_decode(uint8_t *out, const char *in, int out_size)
{
int i, v;
uint8_t *dst = out;
v = 0;
for (i = 0; in[i] && in[i] != '='; i++) {
unsigned int index= in[i]-43;
if (index >= sizeof(map2) || map2[index] == 0xff)
return -1;
v = (v << 6) + map2[index];
if (i & 3) {
if (dst - out < out_size) {
*dst++ = v >> (6 - 2 * (i & 3));
}
}
}
return dst - out;
}