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authorWilmer van der Gaast <wilmer@gaast.net>2006-01-15 17:41:55 +0100
committerWilmer van der Gaast <wilmer@gaast.net>2006-01-15 17:41:55 +0100
commit6fda35070cadc83a6b78c85896fcaf85299e5ad8 (patch)
treec455a54774d343ac64607e37349170ed3fbe0fa4 /protocols/yahoo
parent74c119dd1b066329eba59d057935ba7ec7249555 (diff)
Fixed a bug in url.c that interpreted all http-urls as https.
Diffstat (limited to 'protocols/yahoo')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-03 13:21:39 +0000
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#include "sha1.h"
#include <string.h>
#include <stdio.h>


void sha1_init(sha1_state_t *ctx)
{
	*ctx = g_checksum_new(G_CHECKSUM_SHA1);
}

void sha1_append(sha1_state_t *ctx, const guint8 * message_array, guint len)
{
	g_checksum_update(*ctx, message_array, len);
}

void sha1_finish(sha1_state_t *ctx, guint8 digest[SHA1_HASH_SIZE])
{
	gsize digest_len = SHA1_HASH_SIZE;

	g_checksum_get_digest(*ctx, digest, &digest_len);
	g_checksum_free(*ctx);
}

#define HMAC_BLOCK_SIZE 64

/* BitlBee addition: */
void sha1_hmac(const char *key_, size_t key_len, const char *payload, size_t payload_len, guint8 digest[SHA1_HASH_SIZE])
{
	sha1_state_t sha1;
	guint8 hash[SHA1_HASH_SIZE];
	guint8 key[HMAC_BLOCK_SIZE + 1];
	int i;

	if (key_len == 0) {
		key_len = strlen(key_);
	}
	if (payload_len == 0) {
		payload_len = strlen(payload);
	}

	/* Create K. If our current key is >64 chars we have to hash it,
	   otherwise just pad. */
	memset(key, 0, HMAC_BLOCK_SIZE + 1);
	if (key_len > HMAC_BLOCK_SIZE) {
		sha1_init(&sha1);
		sha1_append(&sha1, (guint8 *) key_, key_len);
		sha1_finish(&sha1, key);
	} else {
		memcpy(key, key_, key_len);
	}

	/* Inner part: H(K XOR 0x36, text) */
	sha1_init(&sha1);
	for (i = 0; i < HMAC_BLOCK_SIZE; i++) {
		key[i] ^= 0x36;
	}
	sha1_append(&sha1, key, HMAC_BLOCK_SIZE);
	sha1_append(&sha1, (const guint8 *) payload, payload_len);
	sha1_finish(&sha1, hash);

	/* Final result: H(K XOR 0x5C, inner stuff) */
	sha1_init(&sha1);
	for (i = 0; i < HMAC_BLOCK_SIZE; i++) {
		key[i] ^= 0x36 ^ 0x5c;
	}
	sha1_append(&sha1, key, HMAC_BLOCK_SIZE);
	sha1_append(&sha1, hash, SHA1_HASH_SIZE);
	sha1_finish(&sha1, digest);
}

/* I think this follows the scheme described on:
   http://en.wikipedia.org/wiki/Universally_unique_identifier#Version_4_.28random.29
   My random data comes from a SHA1 generator but hey, it's random enough for
   me, and RFC 4122 looks way more complicated than I need this to be.

   Returns a value that must be free()d. */
char *sha1_random_uuid(sha1_state_t * context)
{
	guint8 dig[SHA1_HASH_SIZE];
	char *ret = g_new0(char, 40);   /* 36 chars + \0 */
	int i, p;

	sha1_finish(context, dig);
	for (p = i = 0; i < 16; i++) {
		if (i == 4 || i == 6 || i == 8 || i == 10) {
			ret[p++] = '-';
		}
		if (i == 6) {
			dig[i] = (dig[i] & 0x0f) | 0x40;
		}
		if (i == 8) {
			dig[i] = (dig[i] & 0x30) | 0x80;
		}

		sprintf(ret + p, "%02x", dig[i]);
		p += 2;
	}
	ret[p] = '\0';

	return ret;
}