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, size_t clen, int session,
30 char *user, char *pass, char *room)
36 len = snprintf(buf, SIZ, "%d|%s|%s|%s|", session, user, pass, room);
38 for (i=0; (i < len) && (i * 2 < clen); ++i) {
39 snprintf(&cookie[i*2], clen - i * 2, "%02X", buf[i]);
44 * \brief Convert unpacked hex string to an integer
45 * \param in Input hex string
46 * \param len the length of the string
47 * \return the corrosponding integer value
49 int xtoi(char *in, size_t len)
53 while (!IsEmptyStr(in) && isxdigit((byte) *in) && (len-- > 0))
57 if (!isdigit((unsigned char)c)) {
58 c = tolower((unsigned char) c);
59 if ((c < 'a') || (c > 'f'))
70 * \brief Extract all that fun stuff out of the cookie.
71 * \param cookie the cookie string
72 * \param session the corrosponding session to return
73 * \param user the user string
74 * \param user_len the user stringlength
75 * \param pass the passphrase
76 * \param pass_len length of the passphrase string
77 * \param room the room he is in
78 * \param room_len the length of the room string
80 void cookie_to_stuff(char *cookie, int *session,
81 char *user, size_t user_len,
82 char *pass, size_t pass_len,
83 char *room, size_t room_len)
89 len = strlen(cookie) / 2;
90 for (i=0; i<len; ++i) {
91 buf[i] = xtoi(&cookie[i*2], 2);
97 extract_token(t, buf, 0, '|', sizeof t);
98 lprintf(9, "SESS: %s\n", t);
99 extract_token(t, buf, 1, '|', sizeof t);
100 lprintf(9, "USER: %s\n", t);
101 extract_token(t, buf, 2, '|', sizeof t);
102 lprintf(9, "PASS: %s\n", t);
103 extract_token(t, buf, 3, '|', sizeof t);
104 lprintf(9, "ROOM: %s\n", t);
108 *session = extract_int(buf, 0);
110 extract_token(user, buf, 1, '|', user_len);
112 extract_token(pass, buf, 2, '|', pass_len);
114 extract_token(room, buf, 3, '|', room_len);