5 * \defgroup CookieConversion Grep Cookies
6 * Utility functions which convert the HTTP cookie format we use to and
7 * from user/password/room strings.
9 * \ingroup WebcitHttpServer
15 #define TRUE 1 /**< for sure? */
16 #define FALSE 0 /**< nope. */
18 typedef unsigned char byte; /**< Byte type */
22 * Pack all session info into one easy-to-digest cookie. Healthy and delicious!
23 * \param cookie cookie string to create???
24 * \param session the session we want to convert into a cookie
25 * \param user the user to be associated with the cookie
26 * \param pass his passphrase
27 * \param room the room he wants to enter
29 void stuff_to_cookie(char *cookie, int session,
30 char *user, char *pass, char *room)
35 sprintf(buf, "%d|%s|%s|%s|", session, user, pass, room);
37 for (i=0; i<strlen(buf); ++i) {
38 sprintf(&cookie[i*2], "%02X", buf[i]);
43 * \brief Convert unpacked hex string to an integer
44 * \param in Input hex string
45 * \param len the length of the string
46 * \return the corrosponding integer value
48 int xtoi(char *in, size_t len)
52 while (isxdigit((byte) *in) && (len-- > 0))
56 val += isdigit((unsigned char)c)
58 : (tolower((unsigned char)c) - 'a' + 10);
64 * \brief Extract all that fun stuff out of the cookie.
65 * \param cookie the cookie string
66 * \param session the corrosponding session to return
67 * \param user the user string
68 * \param user_len the user stringlength
69 * \param pass the passphrase
70 * \param pass_len length of the passphrase string
71 * \param room the room he is in
72 * \param room_len the length of the room string
74 void cookie_to_stuff(char *cookie, int *session,
75 char *user, size_t user_len,
76 char *pass, size_t pass_len,
77 char *room, size_t room_len)
83 len = strlen(cookie) * 2 ;
84 for (i=0; i<len; ++i) {
85 buf[i] = xtoi(&cookie[i*2], 2);
90 *session = extract_int(buf, 0);
92 extract_token(user, buf, 1, '|', user_len);
94 extract_token(pass, buf, 2, '|', pass_len);
96 extract_token(room, buf, 3, '|', room_len);