commit 34f14a35b60522e2482fade24ab455956370eee4 Author: David Goulet dgoulet@torproject.org Date: Tue Nov 8 13:22:42 2016 -0500

hs: Add single-onion-service line to v3 descriptor

This field indicates if the service is a Single Onion Service if present in the descriptor.

Closes #19642

Signed-off-by: David Goulet dgoulet@torproject.org --- src/or/hs_descriptor.c | 13 +++++++++++++ src/or/hs_descriptor.h | 3 +++ src/or/parsecommon.h | 1 + src/test/test_hs_descriptor.c | 1 + 4 files changed, 18 insertions(+)

diff --git a/src/or/hs_descriptor.c b/src/or/hs_descriptor.c index 96db936..1517ccb 100644 --- a/src/or/hs_descriptor.c +++ b/src/or/hs_descriptor.c @@ -26,6 +26,7 @@ /* Constant string value for the encrypted part of the descriptor. */ #define str_create2_formats "create2-formats" #define str_auth_required "authentication-required" +#define str_single_onion "single-onion-service" #define str_intro_point "introduction-point" #define str_ip_auth_key "auth-key" #define str_ip_enc_key "enc-key" @@ -63,6 +64,7 @@ static token_rule_t hs_desc_v3_token_table[] = { static token_rule_t hs_desc_encrypted_v3_token_table[] = { T1_START(str_create2_formats, R3_CREATE2_FORMATS, CONCAT_ARGS, NO_OBJ), T01(str_auth_required, R3_AUTHENTICATION_REQUIRED, ARGS, NO_OBJ), + T01(str_single_onion, R3_SINGLE_ONION_SERVICE, ARGS, NO_OBJ), END_OF_TABLE };

@@ -692,6 +694,10 @@ encode_encrypted_data(const hs_descriptor_t *desc, smartlist_add_asprintf(lines, "%s %s\n", str_auth_required, buf); tor_free(buf); } + + if (desc->encrypted_data.single_onion_service) { + smartlist_add_asprintf(lines, "%s\n", str_single_onion); + } }

/* Build the introduction point(s) section. */ @@ -1613,6 +1619,13 @@ desc_decode_encrypted_v3(const hs_descriptor_t *desc, goto err; } } + + /* Is this service a single onion service? */ + tok = find_opt_by_keyword(tokens, R3_SINGLE_ONION_SERVICE); + if (tok) { + desc_encrypted_out->single_onion_service = 1; + } + /* Initialize the descriptor's introduction point list before we start * decoding. Having 0 intro point is valid. Then decode them all. */ desc_encrypted_out->intro_points = smartlist_new(); diff --git a/src/or/hs_descriptor.h b/src/or/hs_descriptor.h index 8bc7256..895bed2 100644 --- a/src/or/hs_descriptor.h +++ b/src/or/hs_descriptor.h @@ -128,6 +128,9 @@ typedef struct hs_desc_encrypted_data_t { * in order to contact the service. Contains NULL terminated strings. */ smartlist_t *auth_types;

+ /* Is this descriptor a single onion service? */ + unsigned int single_onion_service : 1; + /* A list of intro points. Contains hs_desc_intro_point_t objects. */ smartlist_t *intro_points; } hs_desc_encrypted_data_t; diff --git a/src/or/parsecommon.h b/src/or/parsecommon.h index 3a86c52..3019df6 100644 --- a/src/or/parsecommon.h +++ b/src/or/parsecommon.h @@ -158,6 +158,7 @@ typedef enum { R3_SIGNATURE, R3_CREATE2_FORMATS, R3_AUTHENTICATION_REQUIRED, + R3_SINGLE_ONION_SERVICE, R3_INTRODUCTION_POINT, R3_INTRO_AUTH_KEY, R3_INTRO_ENC_KEY, diff --git a/src/test/test_hs_descriptor.c b/src/test/test_hs_descriptor.c index 6c88cc1..66ed3ce 100644 --- a/src/test/test_hs_descriptor.c +++ b/src/test/test_hs_descriptor.c @@ -102,6 +102,7 @@ helper_build_hs_desc(unsigned int no_ip) /* Setup encrypted data section. */ desc->encrypted_data.create2_ntor = 1; desc->encrypted_data.auth_types = smartlist_new(); + desc->encrypted_data.single_onion_service = 1; smartlist_add(desc->encrypted_data.auth_types, tor_strdup("ed25519")); desc->encrypted_data.intro_points = smartlist_new(); if (!no_ip) {