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Prepare for encoding switching
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parent
f8e9b0449e
commit
1e895fa713
23
src/iodine.c
23
src/iodine.c
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@ -47,7 +47,7 @@ static void send_ping(int fd);
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static void send_chunk(int fd);
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static int build_hostname(char *buf, size_t buflen,
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const char *data, const size_t datalen,
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const char *topdomain);
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const char *topdomain, struct encoder *encoder);
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int running = 1;
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char password[33];
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@ -65,7 +65,11 @@ static int packetpos;
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static int packetlen;
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static uint16_t chunkid;
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static struct encoder *enc;
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/* Base32 encoder used for non-data packets */
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static struct encoder *b32;
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/* The encoder used for data packets
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* Defaults to Base32, can be changed after handshake */
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static struct encoder *dataenc;
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static void
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sighandler(int sig)
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@ -86,7 +90,7 @@ send_packet(int fd, char cmd, const char *data, const size_t datalen)
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buf[0] = cmd;
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len = build_hostname(buf + 1, sizeof(buf) - 1, data, datalen, topdomain);
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len = build_hostname(buf + 1, sizeof(buf) - 1, data, datalen, topdomain, b32);
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len = dns_encode(packet, sizeof(packet), &q, QR_QUERY, buf, strlen(buf));
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sendto(fd, packet, len, 0, (struct sockaddr*)&peer, sizeof(peer));
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@ -95,7 +99,7 @@ send_packet(int fd, char cmd, const char *data, const size_t datalen)
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static int
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build_hostname(char *buf, size_t buflen,
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const char *data, const size_t datalen,
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const char *topdomain)
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const char *topdomain, struct encoder *encoder)
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{
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int encsize;
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size_t space;
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@ -103,14 +107,14 @@ build_hostname(char *buf, size_t buflen,
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space = MIN(0xFF, buflen) - strlen(topdomain) - 2;
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if (!enc->places_dots())
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if (!encoder->places_dots())
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space -= (space / 62); /* space for dots */
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memset(buf, 0, buflen);
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encsize = enc->encode(buf, &space, data, datalen);
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encsize = encoder->encode(buf, &space, data, datalen);
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if (!enc->places_dots())
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if (!encoder->places_dots())
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inline_dotify(buf, buflen);
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b = buf;
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@ -279,7 +283,7 @@ send_chunk(int fd)
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p += packetpos;
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avail = packetlen - packetpos;
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lastlen = build_hostname(buf + 1, sizeof(buf) - 1, p, avail, topdomain);
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lastlen = build_hostname(buf + 1, sizeof(buf) - 1, p, avail, topdomain, dataenc);
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if (lastlen == avail)
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code = 1;
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@ -536,7 +540,8 @@ main(int argc, char **argv)
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device = NULL;
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chunkid = 0;
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enc = get_base32_encoder();
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b32 = get_base32_encoder();
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dataenc = get_base32_encoder();
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while ((choice = getopt(argc, argv, "vfhu:t:d:P:")) != -1) {
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switch(choice) {
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