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https://github.com/yarrick/iodine.git
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Add send_handshake_query helper function
Convert send_downenctest to use it. Remove unused data/len args from send_downenctest.
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parent
a8a20f570e
commit
d74939d323
47
src/client.c
47
src/client.c
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@ -1255,6 +1255,28 @@ send_version(int fd, uint32_t version)
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send_packet(fd, 'v', data, sizeof(data));
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}
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/* Add lower 15 bits of rand seed as base32,
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* followed by a dot and the tunnel domain and send */
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static void
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send_handshake_query(int fd, char *prefix)
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{
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char buf[300];
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char cmc_dot[5];
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cmc_dot[0] = b32_5to8((rand_seed >> 10) & 0x1f);
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cmc_dot[1] = b32_5to8((rand_seed >> 5) & 0x1f);
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cmc_dot[2] = b32_5to8((rand_seed) & 0x1f);
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cmc_dot[3] = '.';
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cmc_dot[4] = 0;
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rand_seed++;
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buf[0] = 0;
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strncat(buf, prefix, 60); /* 63 - space for 3 CMC bytes */
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strcat(buf, cmc_dot);
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strncat(buf, topdomain, sizeof(buf) - strlen(buf));
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send_query(fd, buf);
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}
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static void
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send_ip_request(int fd, int userid)
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{
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@ -1297,21 +1319,14 @@ send_upenctest(int fd, const char *s)
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}
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static void
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send_downenctest(int fd, char downenc, int variant, char *s, int slen)
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/* Note: content/handling of s is not defined yet. */
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send_downenctest(int fd, char downenc, int variant)
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{
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char buf[512] = "y_____.";
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char prefix[4] = "y__";
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prefix[1] = tolower(downenc);
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prefix[2] = b32_5to8(variant);
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buf[1] = tolower(downenc);
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buf[2] = b32_5to8(variant);
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buf[3] = b32_5to8((rand_seed >> 10) & 0x1f);
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buf[4] = b32_5to8((rand_seed >> 5) & 0x1f);
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buf[5] = b32_5to8((rand_seed) & 0x1f);
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rand_seed++;
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strncat(buf, topdomain, 512 - strlen(buf));
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send_query(fd, buf);
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/* Use send_query directly if we ever send more data here. */
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send_handshake_query(fd, prefix);
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}
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static void
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@ -1746,7 +1761,7 @@ handshake_downenctest(int dns_fd, char trycodec)
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for (i = 0; running && i < 3; i++) {
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send_downenctest(dns_fd, trycodec, 1, NULL, 0);
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send_downenctest(dns_fd, trycodec, 1);
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read = handshake_waitdns(dns_fd, in, sizeof(in), 'y', 'Y', i+1);
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@ -1846,7 +1861,7 @@ handshake_qtypetest(int dns_fd, int timeout)
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byte values can be returned, which is needed for NULL/PRIVATE
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to work. */
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send_downenctest(dns_fd, trycodec, 1, NULL, 0);
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send_downenctest(dns_fd, trycodec, 1);
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read = handshake_waitdns(dns_fd, in, sizeof(in), 'y', 'Y', timeout);
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@ -1972,7 +1987,7 @@ handshake_edns0_check(int dns_fd)
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for (i = 0; running && i < 3; i++) {
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send_downenctest(dns_fd, trycodec, 1, NULL, 0);
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send_downenctest(dns_fd, trycodec, 1);
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read = handshake_waitdns(dns_fd, in, sizeof(in), 'y', 'Y', i+1);
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