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Support writing Content-Encoding headers other than deflate

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Right now this only sends "deflate" or "identity", but there's more
to come.
This commit is contained in:
Nick Mathewson 2017-04-28 14:42:22 -04:00
parent e051c47e98
commit e5f82969ca
1 changed files with 28 additions and 14 deletions
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42
src/or/directory.c
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@ -3165,13 +3165,19 @@ write_http_response_header_impl(dir_connection_t *conn, ssize_t length,
* based on whether the response will be <b>compressed</b> or not. */
static void
write_http_response_header(dir_connection_t *conn, ssize_t length,
int compressed, long cache_lifetime)
compress_method_t method, long cache_lifetime)
{
const char *methodname = compression_method_get_name(method);
const char *doctype;
if (method == NO_METHOD)
doctype = "text/plain";
else
doctype = "application/octet-stream";
write_http_response_header_impl(conn, length,
compressed?"application/octet-stream":"text/plain",
compressed?"deflate":"identity",
NULL,
cache_lifetime);
doctype,
methodname,
NULL,
cache_lifetime);
}
/** Parse the compression methods listed in an Accept-Encoding header <b>h</b>,
@ -3599,7 +3605,8 @@ handle_get_current_consensus(dir_connection_t *conn,
}
clear_spool = 0;
write_http_response_header(conn, -1, compressed,
write_http_response_header(conn, -1,
compressed ? ZLIB_METHOD : NO_METHOD,
smartlist_len(conn->spool) == 1 ? lifetime : 0);
if (! compressed)
conn->compress_state = tor_compress_new(0, ZLIB_METHOD,
@ -3695,7 +3702,8 @@ handle_get_status_vote(dir_connection_t *conn, const get_handler_args_t *args)
write_http_status_line(conn, 503, "Directory busy, try again later");
goto vote_done;
}
write_http_response_header(conn, body_len ? body_len : -1, compressed,
write_http_response_header(conn, body_len ? body_len : -1,
compressed ? ZLIB_METHOD : NO_METHOD,
lifetime);
if (smartlist_len(items)) {
@ -3756,7 +3764,9 @@ handle_get_microdesc(dir_connection_t *conn, const get_handler_args_t *args)
}
clear_spool = 0;
write_http_response_header(conn, -1, compressed, MICRODESC_CACHE_LIFETIME);
write_http_response_header(conn, -1,
compressed ? ZLIB_METHOD : NO_METHOD,
MICRODESC_CACHE_LIFETIME);
if (compressed)
conn->compress_state = tor_compress_new(1, ZLIB_METHOD,
@ -3850,7 +3860,9 @@ handle_get_descriptor(dir_connection_t *conn, const get_handler_args_t *args)
dir_conn_clear_spool(conn);
goto done;
}
write_http_response_header(conn, -1, compressed, cache_lifetime);
write_http_response_header(conn, -1,
compressed ? ZLIB_METHOD : NO_METHOD,
cache_lifetime);
if (compressed)
conn->compress_state = tor_compress_new(1, ZLIB_METHOD,
choose_compression_level(size_guess));
@ -3941,7 +3953,9 @@ handle_get_keys(dir_connection_t *conn, const get_handler_args_t *args)
goto keys_done;
}
write_http_response_header(conn, compressed?-1:len, compressed, 60*60);
write_http_response_header(conn, compressed?-1:len,
compressed ? ZLIB_METHOD : NO_METHOD,
60*60);
if (compressed) {
conn->compress_state = tor_compress_new(1, ZLIB_METHOD,
choose_compression_level(len));
@ -3981,7 +3995,7 @@ handle_get_hs_descriptor_v2(dir_connection_t *conn,
safe_str(escaped(query)));
switch (rend_cache_lookup_v2_desc_as_dir(query, &descp)) {
case 1: /* valid */
write_http_response_header(conn, strlen(descp), 0, 0);
write_http_response_header(conn, strlen(descp), NO_METHOD, 0);
connection_write_to_buf(descp, strlen(descp), TO_CONN(conn));
break;
case 0: /* well-formed but not present */
@ -4033,7 +4047,7 @@ handle_get_hs_descriptor_v3(dir_connection_t *conn,
}
/* Found requested descriptor! Pass it to this nice client. */
write_http_response_header(conn, strlen(desc_str), 0, 0);
write_http_response_header(conn, strlen(desc_str), NO_METHOD, 0);
connection_write_to_buf(desc_str, strlen(desc_str), TO_CONN(conn));
done:
@ -4072,7 +4086,7 @@ handle_get_networkstatus_bridges(dir_connection_t *conn,
/* all happy now. send an answer. */
status = networkstatus_getinfo_by_purpose("bridge", time(NULL));
size_t dlen = strlen(status);
write_http_response_header(conn, dlen, 0, 0);
write_http_response_header(conn, dlen, NO_METHOD, 0);
connection_write_to_buf(status, dlen, TO_CONN(conn));
tor_free(status);
goto done;
@ -4089,7 +4103,7 @@ handle_get_robots(dir_connection_t *conn, const get_handler_args_t *args)
{
const char robots[] = "User-agent: *\r\nDisallow: /\r\n";
size_t len = strlen(robots);
write_http_response_header(conn, len, 0, ROBOTS_CACHE_LIFETIME);
write_http_response_header(conn, len, NO_METHOD, ROBOTS_CACHE_LIFETIME);
connection_write_to_buf(robots, len, TO_CONN(conn));
}
return 0;