ExternalVendorCode/serval-dna
1
0
Fork 0
mirror of https://github.com/servalproject/serval-dna.git synced 2024-12-22 14:32:25 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
4a4e4c2dcf
serval-dna/rhizome_restful.c
Andrew Bettison 518740bcf2 Report missing Content-Disposition header
2016-02-22 18:14:53 +10:30

1049 lines
41 KiB
C
Raw Blame History

/*
Serval DNA Rhizome HTTP RESTful interface
Copyright (C) 2013-2015 Serval Project Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "serval.h"
#include "conf.h"
#include "httpd.h"
#include "strbuf_helpers.h"
DECLARE_HANDLER("/restful/rhizome/bundlelist.json", restful_rhizome_bundlelist_json);
DECLARE_HANDLER("/restful/rhizome/newsince/", restful_rhizome_newsince);
DECLARE_HANDLER("/restful/rhizome/insert", restful_rhizome_insert);
DECLARE_HANDLER("/restful/rhizome/append", restful_rhizome_append);
DECLARE_HANDLER("/restful/rhizome/", restful_rhizome_);
static HTTP_RENDERER render_manifest_headers;
static void on_rhizome_bundle_added(httpd_request *r, rhizome_manifest *m);
static void finalise_union_read_state(httpd_request *r)
{
rhizome_read_close(&r->u.read_state);
}
static void finalise_union_rhizome_insert(httpd_request *r)
{
form_buf_malloc_release(&r->u.insert.manifest);
if (r->u.insert.write.blob_fd != -1)
rhizome_fail_write(&r->u.insert.write);
}
#define LIST_TOKEN_STRLEN (BASE64_ENCODED_LEN(sizeof(serval_uuid_t) + 8))
#define alloca_list_token(rowid) list_token_to_str(alloca(LIST_TOKEN_STRLEN + 1), (rowid))
static char *list_token_to_str(char *buf, uint64_t rowid)
{
struct iovec iov[2];
iov[0].iov_base = rhizome_db_uuid.u.binary;
iov[0].iov_len = sizeof rhizome_db_uuid.u.binary;
iov[1].iov_base = &rowid;
iov[1].iov_len = sizeof rowid;
size_t n = base64url_encodev(buf, iov, 2);
assert(n == LIST_TOKEN_STRLEN);
buf[n] = '\0';
return buf;
}
static int strn_to_list_token(const char *str, uint64_t *rowidp, const char **afterp)
{
unsigned char token[sizeof rhizome_db_uuid.u.binary + sizeof *rowidp];
if (base64url_decode(token, sizeof token, str, 0, afterp, 0, NULL) != sizeof token)
return 0;
if (cmp_uuid_t(&rhizome_db_uuid, (serval_uuid_t *) &token) != 0)
return 0;
memcpy(rowidp, token + sizeof rhizome_db_uuid.u.binary, sizeof *rowidp);
return 1;
}
static int http_request_rhizome_response(struct httpd_request *r, uint16_t http_status, const char *http_reason)
{
uint16_t rhizome_http_status = 0;
switch (r->bundle_result.status) {
case RHIZOME_BUNDLE_STATUS_SAME:
case RHIZOME_BUNDLE_STATUS_DUPLICATE:
rhizome_http_status = 200; // OK
break;
case RHIZOME_BUNDLE_STATUS_NEW:
rhizome_http_status = 201; // Created
break;
case RHIZOME_BUNDLE_STATUS_NO_ROOM:
case RHIZOME_BUNDLE_STATUS_OLD:
rhizome_http_status = 202; // Accepted
break;
case RHIZOME_BUNDLE_STATUS_FAKE:
case RHIZOME_BUNDLE_STATUS_READONLY:
rhizome_http_status = 419; // Authentication Timeout
break;
case RHIZOME_BUNDLE_STATUS_INVALID:
case RHIZOME_BUNDLE_STATUS_INCONSISTENT:
case RHIZOME_BUNDLE_STATUS_MANIFEST_TOO_BIG:
rhizome_http_status = 422; // Unprocessable Entity
break;
case RHIZOME_BUNDLE_STATUS_BUSY:
rhizome_http_status = 423; // Locked
break;
case RHIZOME_BUNDLE_STATUS_ERROR:
rhizome_http_status = 500;
break;
}
if (rhizome_http_status) {
r->http.response.result_extra[0].label = "rhizome_bundle_status_code";
r->http.response.result_extra[0].value.type = JSON_INTEGER;
r->http.response.result_extra[0].value.u.integer = r->bundle_result.status;
const char *status_message = rhizome_bundle_result_message(r->bundle_result);
if (status_message) {
r->http.response.result_extra[1].label = "rhizome_bundle_status_message";
r->http.response.result_extra[1].value.type = JSON_STRING_NULTERM;
r->http.response.result_extra[1].value.u.string.content = status_message;
}
if (rhizome_http_status > http_status) {
http_status = rhizome_http_status;
if (!http_reason)
http_reason = status_message;
}
}
rhizome_http_status = 0;
switch (r->payload_status) {
case RHIZOME_PAYLOAD_STATUS_STORED:
case RHIZOME_PAYLOAD_STATUS_EMPTY:
rhizome_http_status = 200;
break;
case RHIZOME_PAYLOAD_STATUS_NEW:
rhizome_http_status = 201;
break;
case RHIZOME_PAYLOAD_STATUS_TOO_BIG:
case RHIZOME_PAYLOAD_STATUS_EVICTED:
rhizome_http_status = 202; // Accepted
break;
case RHIZOME_PAYLOAD_STATUS_CRYPTO_FAIL:
rhizome_http_status = 419; // Authentication Timeout
break;
case RHIZOME_PAYLOAD_STATUS_WRONG_SIZE:
case RHIZOME_PAYLOAD_STATUS_WRONG_HASH:
rhizome_http_status = 422; // Unprocessable Entity
break;
case RHIZOME_PAYLOAD_STATUS_ERROR:
rhizome_http_status = 500;
break;
}
if (rhizome_http_status) {
r->http.response.result_extra[2].label = "rhizome_payload_status_code";
r->http.response.result_extra[2].value.type = JSON_INTEGER;
r->http.response.result_extra[2].value.u.integer = r->payload_status;
const char *status_message = rhizome_payload_status_message(r->payload_status);
if (status_message) {
r->http.response.result_extra[3].label = "rhizome_payload_status_message";
r->http.response.result_extra[3].value.type = JSON_STRING_NULTERM;
r->http.response.result_extra[3].value.u.string.content = status_message;
}
if (rhizome_http_status > http_status) {
http_status = rhizome_http_status;
if (!http_reason)
http_reason = status_message;
}
}
if (http_status == 0) {
http_status = 500;
http_reason = "Invalid result";
}
http_request_simple_response(&r->http, http_status, http_reason);
return http_status;
}
static HTTP_CONTENT_GENERATOR restful_rhizome_bundlelist_json_content;
static int restful_rhizome_bundlelist_json(httpd_request *r, const char *remainder)
{
r->http.response.header.content_type = CONTENT_TYPE_JSON;
r->http.render_extra_headers = render_manifest_headers;
if (!is_rhizome_http_enabled())
return 404;
int ret = authorize_restful(&r->http);
if (ret)
return ret;
if (*remainder)
return 404;
if (r->http.verb != HTTP_VERB_GET)
return 405;
r->u.rhlist.phase = LIST_HEADER;
r->u.rhlist.rowcount = 0;
bzero(&r->u.rhlist.cursor, sizeof r->u.rhlist.cursor);
http_request_response_generated(&r->http, 200, CONTENT_TYPE_JSON, restful_rhizome_bundlelist_json_content);
return 1;
}
static HTTP_CONTENT_GENERATOR_STRBUF_CHUNKER restful_rhizome_bundlelist_json_content_chunk;
static int restful_rhizome_bundlelist_json_content(struct http_request *hr, unsigned char *buf, size_t bufsz, struct http_content_generator_result *result)
{
httpd_request *r = (httpd_request *) hr;
int ret = rhizome_list_open(&r->u.rhlist.cursor);
if (ret == -1)
return -1;
ret = generate_http_content_from_strbuf_chunks(hr, (char *)buf, bufsz, result, restful_rhizome_bundlelist_json_content_chunk);
rhizome_list_release(&r->u.rhlist.cursor);
return ret;
}
static int restful_rhizome_newsince(httpd_request *r, const char *remainder)
{
r->http.response.header.content_type = CONTENT_TYPE_JSON;
if (!is_rhizome_http_enabled())
return 404;
int ret = authorize_restful(&r->http);
if (ret)
return ret;
uint64_t rowid;
const char *end = NULL;
if (!strn_to_list_token(remainder, &rowid, &end) || strcmp(end, "/bundlelist.json") != 0)
return 404;
if (r->http.verb != HTTP_VERB_GET)
return 405;
r->u.rhlist.phase = LIST_HEADER;
r->u.rhlist.rowcount = 0;
bzero(&r->u.rhlist.cursor, sizeof r->u.rhlist.cursor);
r->u.rhlist.cursor.rowid_since = rowid;
r->u.rhlist.end_time = gettime_ms() + config.api.restful.newsince_timeout * 1000;
r->trigger_rhizome_bundle_added = on_rhizome_bundle_added;
http_request_response_generated(&r->http, 200, CONTENT_TYPE_JSON, restful_rhizome_bundlelist_json_content);
return 1;
}
static void on_rhizome_bundle_added(httpd_request *r, rhizome_manifest *UNUSED(m))
{
http_request_resume_response(&r->http);
}
static int restful_rhizome_bundlelist_json_content_chunk(struct http_request *hr, strbuf b)
{
httpd_request *r = (httpd_request *) hr;
const char *headers[] = {
".token",
"_id",
"service",
"id",
"version",
"date",
".inserttime",
".author",
".fromhere",
"filesize",
"filehash",
"sender",
"recipient",
"name"
};
switch (r->u.rhlist.phase) {
case LIST_HEADER:
strbuf_puts(b, "{\n\"header\":[");
unsigned i;
for (i = 0; i != NELS(headers); ++i) {
if (i)
strbuf_putc(b, ',');
strbuf_json_string(b, headers[i]);
}
strbuf_puts(b, "],\n\"rows\":[");
if (!strbuf_overrun(b))
r->u.rhlist.phase = LIST_ROWS;
return 1;
case LIST_FIRST:
case LIST_ROWS:
{
int ret = rhizome_list_next(&r->u.rhlist.cursor);
if (ret == -1)
return -1;
if (ret == 0) {
time_ms_t now;
if (r->u.rhlist.cursor.rowid_since == 0 || (now = gettime_ms()) >= r->u.rhlist.end_time) {
r->u.rhlist.phase = LIST_END;
return 1;
}
http_request_pause_response(&r->http, r->u.rhlist.end_time);
return 0;
}
rhizome_manifest *m = r->u.rhlist.cursor.manifest;
assert(m->filesize != RHIZOME_SIZE_UNSET);
rhizome_lookup_author(m);
if (r->u.rhlist.rowcount != 0)
strbuf_putc(b, ',');
strbuf_puts(b, "\n[");
if (m->rowid > r->u.rhlist.rowid_highest) {
strbuf_json_string(b, alloca_list_token(m->rowid));
r->u.rhlist.rowid_highest = m->rowid;
} else
strbuf_json_null(b);
strbuf_putc(b, ',');
strbuf_sprintf(b, "%"PRIu64, m->rowid);
strbuf_putc(b, ',');
strbuf_json_string(b, m->service);
strbuf_putc(b, ',');
strbuf_json_hex(b, m->cryptoSignPublic.binary, sizeof m->cryptoSignPublic.binary);
strbuf_putc(b, ',');
strbuf_sprintf(b, "%"PRIu64, m->version);
strbuf_putc(b, ',');
if (m->has_date)
strbuf_sprintf(b, "%"PRItime_ms_t, m->date);
else
strbuf_json_null(b);
strbuf_putc(b, ',');
strbuf_sprintf(b, "%"PRItime_ms_t",", m->inserttime);
// The 'fromhere' flag indicates if the author is a known (unlocked) identity in the local
// keyring. The values are 0 (no), 1 (yes), 2 (yes and cryptographically verified). In the
// implementation below, the 0 value (no) is redundant, because it only occurs when the
// 'author' column is null, but in future the author SID might be reported for non-local
// authors, so clients should only use 'fromhere != 0', never 'author != null', to detect
// local authorship.
int fromhere = 0;
switch (m->authorship) {
case AUTHOR_AUTHENTIC:
fromhere = 2;
strbuf_json_hex(b, m->author.binary, sizeof m->author.binary);
break;
case AUTHOR_LOCAL:
fromhere = 1;
strbuf_json_hex(b, m->author.binary, sizeof m->author.binary);
break;
default:
strbuf_json_null(b);
break;
}
strbuf_putc(b, ',');
strbuf_sprintf(b, "%d", fromhere);
strbuf_putc(b, ',');
strbuf_sprintf(b, "%"PRIu64, m->filesize);
strbuf_putc(b, ',');
strbuf_json_hex(b, m->filesize ? m->filehash.binary : NULL, sizeof m->filehash.binary);
strbuf_putc(b, ',');
strbuf_json_hex(b, m->has_sender ? m->sender.binary : NULL, sizeof m->sender.binary);
strbuf_putc(b, ',');
strbuf_json_hex(b, m->has_recipient ? m->recipient.binary : NULL, sizeof m->recipient.binary);
strbuf_putc(b, ',');
strbuf_json_string(b, m->name);
strbuf_puts(b, "]");
if (!strbuf_overrun(b)) {
rhizome_list_commit(&r->u.rhlist.cursor);
++r->u.rhlist.rowcount;
}
}
return 1;
case LIST_END:
strbuf_puts(b, "\n]\n}\n");
if (!strbuf_overrun(b))
r->u.rhlist.phase = LIST_DONE;
// fall through...
case LIST_DONE:
return 0;
}
abort();
}
static HTTP_REQUEST_PARSER restful_rhizome_insert_end;
static int insert_mime_part_start(struct http_request *);
static int insert_mime_part_end(struct http_request *);
static int insert_mime_part_header(struct http_request *, const struct mime_part_headers *);
static int insert_mime_part_body(struct http_request *, char *, size_t);
static int restful_rhizome_insert(httpd_request *r, const char *remainder)
{
r->http.response.header.content_type = CONTENT_TYPE_JSON;
r->http.render_extra_headers = render_manifest_headers;
if (!is_rhizome_http_enabled())
return 404;
int ret = authorize_restful(&r->http);
if (ret)
return ret;
if (*remainder)
return 404;
if (r->http.verb != HTTP_VERB_POST)
return 405;
// Parse the request body as multipart/form-data.
assert(r->u.insert.current_part == NULL);
assert(!r->u.insert.received_author);
assert(!r->u.insert.received_secret);
assert(!r->u.insert.received_bundleid);
assert(!r->u.insert.received_manifest);
assert(!r->u.insert.received_payload);
bzero(&r->u.insert.write, sizeof r->u.insert.write);
r->u.insert.write.blob_fd = -1;
r->finalise_union = finalise_union_rhizome_insert;
r->http.form_data.handle_mime_part_start = insert_mime_part_start;
r->http.form_data.handle_mime_part_end = insert_mime_part_end;
r->http.form_data.handle_mime_part_header = insert_mime_part_header;
r->http.form_data.handle_mime_body = insert_mime_part_body;
// Perform the insert once the body has arrived.
r->http.handle_content_end = restful_rhizome_insert_end;
return 1;
}
static int restful_rhizome_append(httpd_request *r, const char *remainder)
{
r->u.insert.appending = 1;
return restful_rhizome_insert(r, remainder);
}
static char PART_MANIFEST[] = "manifest";
static char PART_PAYLOAD[] = "payload";
static char PART_BUNDLEID[] = "bundle-id";
static char PART_AUTHOR[] = "bundle-author";
static char PART_SECRET[] = "bundle-secret";
static int insert_mime_part_start(struct http_request *hr)
{
httpd_request *r = (httpd_request *) hr;
assert(r->u.insert.current_part == NULL);
return 0;
}
static int insert_make_manifest(httpd_request *r)
{
if (!r->u.insert.received_manifest)
return http_response_form_part(r, 400, "Missing", PART_MANIFEST, NULL, 0);
if ((r->manifest = rhizome_new_manifest()) == NULL)
return http_request_rhizome_response(r, 429, "Manifest table full"); // Too Many Requests
assert(r->u.insert.manifest.length <= sizeof r->manifest->manifestdata);
memcpy(r->manifest->manifestdata, r->u.insert.manifest.buffer, r->u.insert.manifest.length);
r->manifest->manifest_all_bytes = r->u.insert.manifest.length;
rhizome_manifest *mout = NULL;
int n = rhizome_manifest_parse(r->manifest);
switch (n) {
case 0:
if (r->manifest->malformed) {
r->bundle_result = rhizome_bundle_result_sprintf(RHIZOME_BUNDLE_STATUS_INVALID, "Malformed manifest: %s", r->manifest->malformed);
} else {
r->bundle_result = rhizome_manifest_add_file(r->u.insert.appending, r->manifest, &mout,
r->u.insert.received_bundleid ? &r->bid : NULL,
r->u.insert.received_secret ? &r->u.insert.bundle_secret : NULL,
r->u.insert.received_author ? &r->u.insert.author : NULL,
NULL, 0, NULL);
}
break;
case 1:
r->bundle_result = rhizome_bundle_result_static(RHIZOME_BUNDLE_STATUS_INVALID, "Invalid manifest");
break;
default:
WHYF("rhizome_manifest_parse() returned %d", n);
// fall through
case -1:
r->bundle_result = rhizome_bundle_result_static(RHIZOME_BUNDLE_STATUS_ERROR, "Error while parsing manifest");
break;
}
switch (r->bundle_result.status) {
case RHIZOME_BUNDLE_STATUS_NEW:
case RHIZOME_BUNDLE_STATUS_OLD:
case RHIZOME_BUNDLE_STATUS_SAME:
case RHIZOME_BUNDLE_STATUS_DUPLICATE:
case RHIZOME_BUNDLE_STATUS_NO_ROOM:
break;
case RHIZOME_BUNDLE_STATUS_INCONSISTENT:
case RHIZOME_BUNDLE_STATUS_INVALID:
case RHIZOME_BUNDLE_STATUS_BUSY:
case RHIZOME_BUNDLE_STATUS_FAKE:
case RHIZOME_BUNDLE_STATUS_READONLY:
case RHIZOME_BUNDLE_STATUS_MANIFEST_TOO_BIG:
case RHIZOME_BUNDLE_STATUS_ERROR:
return http_request_rhizome_response(r, 0, NULL);
}
assert(mout != NULL);
if (mout != r->manifest) {
rhizome_manifest_free(r->manifest);
r->manifest = mout;
}
assert(r->manifest != NULL);
return 0;
}
static int insert_mime_part_header(struct http_request *hr, const struct mime_part_headers *h)
{
httpd_request *r = (httpd_request *) hr;
if (!h->content_disposition.type[0])
return http_response_content_disposition(r, 415, "Missing", h->content_disposition.type);
if (strcmp(h->content_disposition.type, "form-data") != 0)
return http_response_content_disposition(r, 415, "Unsupported", h->content_disposition.type);
if (strcmp(h->content_disposition.name, PART_AUTHOR) == 0) {
if (r->u.insert.received_author)
return http_response_form_part(r, 400, "Duplicate", PART_AUTHOR, NULL, 0);
// Reject a request if this parameter comes after the manifest part.
if (r->u.insert.received_manifest)
return http_response_form_part(r, 400, "Spurious", PART_AUTHOR, NULL, 0);
// TODO enforce correct content type
r->u.insert.current_part = PART_AUTHOR;
assert(r->u.insert.author_hex_len == 0);
}
else if (strcmp(h->content_disposition.name, PART_SECRET) == 0) {
if (r->u.insert.received_secret)
return http_response_form_part(r, 400, "Duplicate", PART_SECRET, NULL, 0);
// Reject a request if this parameter comes after the manifest part.
if (r->u.insert.received_manifest)
return http_response_form_part(r, 400, "Spurious", PART_SECRET, NULL, 0);
// TODO enforce correct content type
r->u.insert.current_part = PART_SECRET;
assert(r->u.insert.secret_text_len == 0);
}
else if (strcmp(h->content_disposition.name, PART_BUNDLEID) == 0) {
if (r->u.insert.received_bundleid)
return http_response_form_part(r, 400, "Duplicate", PART_BUNDLEID, NULL, 0);
// Reject a request if this parameter comes after the manifest part.
if (r->u.insert.received_manifest)
return http_response_form_part(r, 400, "Spurious", PART_BUNDLEID, NULL, 0);
// TODO enforce correct content type
r->u.insert.current_part = PART_BUNDLEID;
assert(r->u.insert.bid_text_len == 0);
}
else if (strcmp(h->content_disposition.name, PART_MANIFEST) == 0) {
// Reject a request if it has a repeated manifest part.
if (r->u.insert.received_manifest)
return http_response_form_part(r, 400, "Duplicate", PART_MANIFEST, NULL, 0);
form_buf_malloc_init(&r->u.insert.manifest, MAX_MANIFEST_BYTES);
if ( strcmp(h->content_type.type, "rhizome") != 0
|| strcmp(h->content_type.subtype, "manifest") != 0
)
return http_response_form_part(r, 415, "Unsupported Content-Type in", PART_MANIFEST, NULL, 0);
if ((strcmp(h->content_type.format, "text+binarysig") != 0)
&&strlen(h->content_type.format))
return http_response_form_part(r, 415, "Unsupported rhizome/manifest format in", PART_MANIFEST, NULL, 0);
r->u.insert.current_part = PART_MANIFEST;
}
else if (strcmp(h->content_disposition.name, PART_PAYLOAD) == 0) {
// Reject a request if it has a repeated payload part.
if (r->u.insert.received_payload)
return http_response_form_part(r, 400, "Duplicate", PART_PAYLOAD, NULL, 0);
// Reject a request if it has a missing manifest part preceding the payload part.
if (!r->u.insert.received_manifest)
return http_response_form_part(r, 400, "Missing", PART_MANIFEST, NULL, 0);
assert(r->manifest != NULL);
// TODO enforce correct content type
r->u.insert.current_part = PART_PAYLOAD;
// If the manifest does not contain a 'name' field, then assign it from the payload filename.
if ( strcasecmp(RHIZOME_SERVICE_FILE, r->manifest->service) == 0
&& r->manifest->name == NULL
&& *h->content_disposition.filename
)
rhizome_manifest_set_name_from_path(r->manifest, h->content_disposition.filename);
// Start writing the payload content into the Rhizome store.
if (r->u.insert.appending) {
r->payload_status = rhizome_write_open_journal(&r->u.insert.write, r->manifest, 0, RHIZOME_SIZE_UNSET);
if (r->payload_status == RHIZOME_PAYLOAD_STATUS_ERROR) {
WHYF("rhizome_write_open_journal() returned %d %s", r->payload_status, rhizome_payload_status_message(r->payload_status));
return http_request_rhizome_response(r, 500, "Error in payload open for write (journal)");
}
} else {
// Note: r->manifest->filesize can be RHIZOME_SIZE_UNSET at this point, if the manifest did
// not contain a 'filesize' field.
r->payload_status = rhizome_write_open_manifest(&r->u.insert.write, r->manifest);
if (r->payload_status == RHIZOME_PAYLOAD_STATUS_ERROR) {
WHYF("rhizome_write_open_manifest() returned %d %s", r->payload_status, rhizome_payload_status_message(r->payload_status));
return http_request_rhizome_response(r, 500, "Error in payload open for write");
}
}
switch (r->payload_status) {
case RHIZOME_PAYLOAD_STATUS_STORED:
// TODO: initialise payload hash so it can be compared with stored payload
break;
default:
break; // r->payload_status gets dealt with later
}
r->u.insert.payload_size = 0;
}
else
return http_response_form_part(r, 400, "Unsupported", h->content_disposition.name, NULL, 0);
return 0;
}
static int insert_mime_part_body(struct http_request *hr, char *buf, size_t len)
{
httpd_request *r = (httpd_request *) hr;
if (r->u.insert.current_part == PART_AUTHOR) {
accumulate_text(r, PART_AUTHOR,
r->u.insert.author_hex,
sizeof r->u.insert.author_hex,
&r->u.insert.author_hex_len,
buf, len);
}
else if (r->u.insert.current_part == PART_SECRET) {
accumulate_text(r, PART_SECRET,
r->u.insert.secret_text,
sizeof r->u.insert.secret_text,
&r->u.insert.secret_text_len,
buf, len);
}
else if (r->u.insert.current_part == PART_BUNDLEID) {
accumulate_text(r, PART_BUNDLEID,
r->u.insert.bid_text,
sizeof r->u.insert.bid_text,
&r->u.insert.bid_text_len,
buf, len);
}
else if (r->u.insert.current_part == PART_MANIFEST) {
form_buf_malloc_accumulate(r, PART_MANIFEST, &r->u.insert.manifest, buf, len);
}
else if (r->u.insert.current_part == PART_PAYLOAD) {
r->u.insert.payload_size += len;
switch (r->payload_status) {
case RHIZOME_PAYLOAD_STATUS_NEW:
if (rhizome_write_buffer(&r->u.insert.write, (unsigned char *)buf, len) == -1)
return http_request_rhizome_response(r, 500, "Error in payload write");
break;
case RHIZOME_PAYLOAD_STATUS_STORED:
// TODO: calculate payload hash so it can be compared with stored payload
break;
default:
break;
}
} else
FATALF("current_part = %s", alloca_str_toprint(r->u.insert.current_part));
return 0;
}
static int insert_mime_part_end(struct http_request *hr)
{
httpd_request *r = (httpd_request *) hr;
if (r->u.insert.current_part == PART_AUTHOR) {
if ( r->u.insert.author_hex_len != sizeof r->u.insert.author_hex
|| strn_to_sid_t(&r->u.insert.author, r->u.insert.author_hex, sizeof r->u.insert.author_hex) == -1
)
return http_response_form_part(r, 400, "Invalid", PART_AUTHOR, r->u.insert.author_hex, r->u.insert.author_hex_len);
r->u.insert.received_author = 1;
DEBUGF(rhizome, "received %s = %s", PART_AUTHOR, alloca_tohex_sid_t(r->u.insert.author));
}
else if (r->u.insert.current_part == PART_SECRET) {
if (strn_to_rhizome_bsk_t(&r->u.insert.bundle_secret, r->u.insert.secret_text, r->u.insert.secret_text_len) == -1)
return http_response_form_part(r, 400, "Invalid", PART_SECRET, r->u.insert.secret_text, r->u.insert.secret_text_len);
r->u.insert.received_secret = 1;
DEBUGF(rhizome, "received %s = %s", PART_SECRET, alloca_tohex_rhizome_bk_t(r->u.insert.bundle_secret));
}
else if (r->u.insert.current_part == PART_BUNDLEID) {
if (strn_to_rhizome_bid_t(&r->bid, r->u.insert.bid_text, r->u.insert.bid_text_len) == -1)
return http_response_form_part(r, 400, "Invalid", PART_BUNDLEID, r->u.insert.secret_text, r->u.insert.secret_text_len);
r->u.insert.received_bundleid = 1;
DEBUGF(rhizome, "received %s = %s", PART_BUNDLEID, alloca_tohex_rhizome_bid_t(r->bid));
}
else if (r->u.insert.current_part == PART_MANIFEST) {
r->u.insert.received_manifest = 1;
DEBUGF(rhizome, "received %s = %s", PART_MANIFEST, alloca_toprint(-1, r->u.insert.manifest.buffer, r->u.insert.manifest.length));
int result = insert_make_manifest(r);
if (result)
return result;
}
else if (r->u.insert.current_part == PART_PAYLOAD) {
r->u.insert.received_payload = 1;
DEBUGF(rhizome, "received %s, %zd bytes", PART_PAYLOAD, r->u.insert.payload_size);
r->payload_status = rhizome_finish_write(&r->u.insert.write);
} else
FATALF("current_part = %s", alloca_str_toprint(r->u.insert.current_part));
r->u.insert.current_part = NULL;
return 0;
}
static int restful_rhizome_insert_end(struct http_request *hr)
{
httpd_request *r = (httpd_request *) hr;
if (!r->u.insert.received_manifest)
return http_response_form_part(r, 400, "Missing", PART_MANIFEST, NULL, 0);
if (!r->u.insert.received_payload)
return http_response_form_part(r, 400, "Missing", PART_PAYLOAD, NULL, 0);
// Fill in the missing manifest fields and ensure payload and manifest are consistent.
assert(r->manifest != NULL);
DEBUGF(rhizome, "r->payload_status=%d %s", r->payload_status, rhizome_payload_status_message(r->payload_status));
assert(r->u.insert.write.file_length != RHIZOME_SIZE_UNSET);
if (r->u.insert.appending) {
// For journal appends, the user cannot supply a 'filesize' field. This will have been caught
// by previous logic. The manifest should also have a 'filesize' field by now. The new payload
// size should be the sum of 'filesize' and the appended portion.
assert(r->manifest->is_journal);
assert(r->manifest->filesize != RHIZOME_SIZE_UNSET);
DEBUGF(rhizome, "file_length=%"PRIu64" filesize=%"PRIu64" payload_size=%"PRIu64,
r->u.insert.write.file_length,
r->manifest->filesize,
r->u.insert.payload_size);
if (r->u.insert.write.file_length != r->manifest->filesize + r->u.insert.payload_size)
r->payload_status = RHIZOME_PAYLOAD_STATUS_WRONG_SIZE;
} else {
// The Rhizome CLI 'add file' operation allows the user to supply a 'filesize' field which is
// smaller than the supplied file, for convenience, to allow only the first part of a file to be
// added as a payload. But the RESTful interface doesn't allow that.
assert(!r->manifest->is_journal);
if (r->manifest->filesize != RHIZOME_SIZE_UNSET && r->u.insert.payload_size != r->manifest->filesize)
r->payload_status = RHIZOME_PAYLOAD_STATUS_WRONG_SIZE;
}
r->payload_status = rhizome_finish_store(&r->u.insert.write, r->manifest, r->payload_status);
int status_valid = 0;
switch (r->payload_status) {
case RHIZOME_PAYLOAD_STATUS_NEW:
case RHIZOME_PAYLOAD_STATUS_STORED:
case RHIZOME_PAYLOAD_STATUS_EMPTY:
status_valid = 1;
break;
case RHIZOME_PAYLOAD_STATUS_WRONG_SIZE:
r->bundle_result = rhizome_bundle_result_sprintf(RHIZOME_BUNDLE_STATUS_INCONSISTENT,
"Payload size (%"PRIu64") contradicts manifest (filesize=%"PRIu64")",
r->u.insert.payload_size, r->manifest->filesize);
return http_request_rhizome_response(r, 0, "Inconsistent filesize");
case RHIZOME_PAYLOAD_STATUS_WRONG_HASH:
r->bundle_result = rhizome_bundle_result_sprintf(RHIZOME_BUNDLE_STATUS_INCONSISTENT,
"Payload hash (%s) contradicts manifest (filehash=%s)",
alloca_tohex_rhizome_filehash_t(r->u.insert.write.id),
alloca_tohex_rhizome_filehash_t(r->manifest->filehash));
return http_request_rhizome_response(r, 0, "Inconsistent filehash");
case RHIZOME_PAYLOAD_STATUS_CRYPTO_FAIL:
r->bundle_result = rhizome_bundle_result(RHIZOME_BUNDLE_STATUS_READONLY);
return http_request_rhizome_response(r, 0, NULL);
case RHIZOME_PAYLOAD_STATUS_TOO_BIG:
r->bundle_result = rhizome_bundle_result(RHIZOME_BUNDLE_STATUS_NO_ROOM);
return http_request_rhizome_response(r, 0, NULL);
case RHIZOME_PAYLOAD_STATUS_EVICTED:
r->bundle_result = rhizome_bundle_result(RHIZOME_BUNDLE_STATUS_NO_ROOM);
return http_request_rhizome_response(r, 0, NULL);
case RHIZOME_PAYLOAD_STATUS_ERROR:
return http_request_rhizome_response(r, 500, "Payload store error");
}
if (!status_valid)
FATALF("rhizome_finish_store() returned status = %d", r->payload_status);
// Finalise the manifest and add it to the store.
const char *invalid_reason = rhizome_manifest_validate_reason(r->manifest);
if (invalid_reason) {
r->bundle_result = rhizome_bundle_result_static(RHIZOME_BUNDLE_STATUS_INVALID, invalid_reason);
return http_request_rhizome_response(r, 0, NULL);
}
if (r->manifest->malformed) {
r->bundle_result = rhizome_bundle_result_static(RHIZOME_BUNDLE_STATUS_INVALID, r->manifest->malformed);
return http_request_rhizome_response(r, 0, NULL);
}
if (!r->manifest->haveSecret) {
r->bundle_result = rhizome_bundle_result_static(RHIZOME_BUNDLE_STATUS_READONLY, "Missing bundle secret");
return http_request_rhizome_response(r, 0, NULL);
}
rhizome_manifest *mout = NULL;
rhizome_bundle_result_free(&r->bundle_result);
r->bundle_result = rhizome_manifest_finalise(r->manifest, &mout, !r->u.insert.force_new);
int http_status = 500;
switch (r->bundle_result.status) {
case RHIZOME_BUNDLE_STATUS_NEW:
if (mout && mout != r->manifest)
rhizome_manifest_free(mout);
http_status = 201;
break;
case RHIZOME_BUNDLE_STATUS_SAME:
case RHIZOME_BUNDLE_STATUS_OLD:
case RHIZOME_BUNDLE_STATUS_DUPLICATE:
if (mout && mout != r->manifest) {
rhizome_manifest_free(r->manifest);
r->manifest = mout;
}
http_status = 201;
break;
case RHIZOME_BUNDLE_STATUS_ERROR:
rhizome_bundle_result_free(&r->bundle_result);
r->bundle_result = rhizome_bundle_result_static(RHIZOME_BUNDLE_STATUS_ERROR, "Error in manifest finalise");
// fall through
case RHIZOME_BUNDLE_STATUS_INVALID:
case RHIZOME_BUNDLE_STATUS_FAKE:
case RHIZOME_BUNDLE_STATUS_INCONSISTENT:
case RHIZOME_BUNDLE_STATUS_NO_ROOM:
case RHIZOME_BUNDLE_STATUS_READONLY:
case RHIZOME_BUNDLE_STATUS_BUSY:
case RHIZOME_BUNDLE_STATUS_MANIFEST_TOO_BIG:
if (mout && mout != r->manifest)
rhizome_manifest_free(mout);
rhizome_manifest_free(r->manifest);
r->manifest = NULL;
return http_request_rhizome_response(r, 0, NULL);
}
if (http_status == 500)
FATALF("rhizome_manifest_finalise() returned status=%d", r->bundle_result.status);
rhizome_authenticate_author(r->manifest);
http_request_response_static(&r->http, http_status, "rhizome-manifest/text",
(const char *)r->manifest->manifestdata, r->manifest->manifest_all_bytes
);
return 0;
}
static HTTP_HANDLER restful_rhizome_bid_rhm;
static HTTP_HANDLER restful_rhizome_bid_raw_bin;
static HTTP_HANDLER restful_rhizome_bid_decrypted_bin;
static int restful_rhizome_(httpd_request *r, const char *remainder)
{
r->http.response.header.content_type = CONTENT_TYPE_JSON;
r->http.render_extra_headers = render_manifest_headers;
if (!is_rhizome_http_enabled())
return 404;
int ret = authorize_restful(&r->http);
if (ret)
return ret;
HTTP_HANDLER *handler = NULL;
rhizome_bid_t bid;
const char *end;
if (parse_rhizome_bid_t(&bid, remainder, -1, &end) != -1) {
if (strcmp(end, ".rhm") == 0) {
handler = restful_rhizome_bid_rhm;
remainder = "";
} else if (strcmp(end, "/raw.bin") == 0) {
handler = restful_rhizome_bid_raw_bin;
remainder = "";
} else if (strcmp(end, "/decrypted.bin") == 0) {
handler = restful_rhizome_bid_decrypted_bin;
remainder = "";
}
}
if (handler == NULL)
return 404;
if (r->http.verb != HTTP_VERB_GET)
return 405;
if ((r->manifest = rhizome_new_manifest()) == NULL)
return http_request_rhizome_response(r, 429, "Manifest table full"); // Too Many Requests
r->bundle_result.status = rhizome_retrieve_manifest(&bid, r->manifest);
switch(r->bundle_result.status){
case RHIZOME_BUNDLE_STATUS_SAME:
rhizome_authenticate_author(r->manifest);
break;
case RHIZOME_BUNDLE_STATUS_NEW:
rhizome_manifest_free(r->manifest);
r->manifest = NULL;
break;
case RHIZOME_BUNDLE_STATUS_BUSY:
rhizome_manifest_free(r->manifest);
return http_request_rhizome_response(r, 0, NULL);
case RHIZOME_BUNDLE_STATUS_ERROR:
rhizome_manifest_free(r->manifest);
r->manifest = NULL;
return http_request_rhizome_response(r, 500, "Manifest retrieve error");
default: // should not return others
FATALF("rhizome_retrieve_manifest() returned status = %d", r->bundle_result.status);
}
return handler(r, remainder);
}
static int restful_rhizome_bid_rhm(httpd_request *r, const char *remainder)
{
if (*remainder)
return 404;
if (r->manifest == NULL)
return http_request_rhizome_response(r, 404, "Bundle not found"); // Not Found
http_request_response_static(&r->http, 200, "rhizome-manifest/text",
(const char *)r->manifest->manifestdata, r->manifest->manifest_all_bytes
);
return 1;
}
static int restful_rhizome_bid_raw_bin(httpd_request *r, const char *remainder)
{
if (*remainder)
return 404;
if (r->manifest == NULL)
return http_request_rhizome_response(r, 404, "Bundle not found"); // Not Found
if (r->manifest->filesize == 0) {
http_request_response_static(&r->http, 200, CONTENT_TYPE_BLOB, "", 0);
return 1;
}
int ret = rhizome_response_content_init_filehash(r, &r->manifest->filehash);
if (ret)
return ret;
http_request_response_generated(&r->http, 200, CONTENT_TYPE_BLOB, rhizome_payload_content);
return 1;
}
static int restful_rhizome_bid_decrypted_bin(httpd_request *r, const char *remainder)
{
if (*remainder)
return 404;
if (r->manifest == NULL)
return http_request_rhizome_response(r, 404, "Bundle not found"); // Not Found
if (r->manifest->filesize == 0) {
// TODO use Content Type from manifest (once it is implemented)
http_request_response_static(&r->http, 200, CONTENT_TYPE_BLOB, "", 0);
return 1;
}
int ret = rhizome_response_content_init_payload(r, r->manifest);
if (ret)
return ret;
// TODO use Content Type from manifest (once it is implemented)
http_request_response_generated(&r->http, 200, CONTENT_TYPE_BLOB, rhizome_payload_content);
return 1;
}
static int rhizome_response_content_init_read_state(httpd_request *r)
{
if (r->u.read_state.length == RHIZOME_SIZE_UNSET && rhizome_read(&r->u.read_state, NULL, 0)) {
rhizome_read_close(&r->u.read_state);
return http_request_rhizome_response(r, 404, "Payload not found");
}
assert(r->u.read_state.length != RHIZOME_SIZE_UNSET);
int ret = http_response_init_content_range(r, r->u.read_state.length);
if (ret==0)
r->u.read_state.offset = r->http.response.header.content_range_start;
return ret;
}
int rhizome_response_content_init_filehash(httpd_request *r, const rhizome_filehash_t *hash)
{
bzero(&r->u.read_state, sizeof r->u.read_state);
r->u.read_state.blob_fd = -1;
assert(r->finalise_union == NULL);
r->finalise_union = finalise_union_read_state;
r->payload_status = rhizome_open_read(&r->u.read_state, hash);
switch (r->payload_status) {
case RHIZOME_PAYLOAD_STATUS_EMPTY:
case RHIZOME_PAYLOAD_STATUS_STORED:
return rhizome_response_content_init_read_state(r);
case RHIZOME_PAYLOAD_STATUS_NEW:
return http_request_rhizome_response(r, 404, "Payload not found");
case RHIZOME_PAYLOAD_STATUS_ERROR:
case RHIZOME_PAYLOAD_STATUS_WRONG_SIZE:
case RHIZOME_PAYLOAD_STATUS_WRONG_HASH:
case RHIZOME_PAYLOAD_STATUS_CRYPTO_FAIL:
case RHIZOME_PAYLOAD_STATUS_TOO_BIG:
case RHIZOME_PAYLOAD_STATUS_EVICTED:
return http_request_rhizome_response(r, 500, "Payload read error");
}
FATALF("rhizome_open_read() returned status = %d", r->payload_status);
}
int rhizome_response_content_init_payload(httpd_request *r, rhizome_manifest *m)
{
bzero(&r->u.read_state, sizeof r->u.read_state);
r->u.read_state.blob_fd = -1;
assert(r->finalise_union == NULL);
r->finalise_union = finalise_union_read_state;
r->payload_status = rhizome_open_decrypt_read(m, &r->u.read_state);
switch (r->payload_status) {
case RHIZOME_PAYLOAD_STATUS_EMPTY:
case RHIZOME_PAYLOAD_STATUS_STORED:
return rhizome_response_content_init_read_state(r);
case RHIZOME_PAYLOAD_STATUS_NEW:
return http_request_rhizome_response(r, 404, "Payload not found");
case RHIZOME_PAYLOAD_STATUS_CRYPTO_FAIL:
return http_request_rhizome_response(r, 419, "Payload decryption error"); // Authentication Timeout
case RHIZOME_PAYLOAD_STATUS_ERROR:
case RHIZOME_PAYLOAD_STATUS_WRONG_SIZE:
case RHIZOME_PAYLOAD_STATUS_WRONG_HASH:
case RHIZOME_PAYLOAD_STATUS_TOO_BIG:
case RHIZOME_PAYLOAD_STATUS_EVICTED:
return http_request_rhizome_response(r, 500, "Payload read error");
}
FATALF("rhizome_open_decrypt_read() returned status = %d", r->payload_status);
}
int rhizome_payload_content(struct http_request *hr, unsigned char *buf, size_t bufsz, struct http_content_generator_result *result)
{
// Only read multiples of 4k from disk.
const size_t blocksz = 1 << 12;
// Ask for a large buffer for all future reads.
const size_t preferred_bufsz = 16 * blocksz;
// Reads the next part of the payload into the supplied buffer.
httpd_request *r = (httpd_request *) hr;
assert(r->u.read_state.length != RHIZOME_SIZE_UNSET);
assert(r->u.read_state.offset < r->u.read_state.length);
uint64_t remain = r->u.read_state.length - r->u.read_state.offset;
size_t readlen = bufsz;
if (remain <= bufsz)
readlen = remain;
else
readlen &= ~(blocksz - 1);
if (readlen > 0) {
ssize_t n = rhizome_read(&r->u.read_state, buf, readlen);
if (n == -1)
return -1;
result->generated = (size_t) n;
}
assert(r->u.read_state.offset <= r->u.read_state.length);
remain = r->u.read_state.length - r->u.read_state.offset;
result->need = remain < preferred_bufsz ? remain : preferred_bufsz;
return remain ? 1 : 0;
}
static void render_manifest_headers(struct http_request *hr, strbuf sb)
{
httpd_request *r = (httpd_request *) hr;
switch (r->bundle_result.status) {
case RHIZOME_BUNDLE_STATUS_NEW:
case RHIZOME_BUNDLE_STATUS_SAME:
case RHIZOME_BUNDLE_STATUS_DUPLICATE:
case RHIZOME_BUNDLE_STATUS_OLD:
case RHIZOME_BUNDLE_STATUS_INVALID:
case RHIZOME_BUNDLE_STATUS_FAKE:
case RHIZOME_BUNDLE_STATUS_INCONSISTENT:
case RHIZOME_BUNDLE_STATUS_NO_ROOM:
case RHIZOME_BUNDLE_STATUS_READONLY:
case RHIZOME_BUNDLE_STATUS_BUSY:
case RHIZOME_BUNDLE_STATUS_MANIFEST_TOO_BIG:
case RHIZOME_BUNDLE_STATUS_ERROR:
strbuf_sprintf(sb, "Serval-Rhizome-Result-Bundle-Status-Code: %d\r\n", r->bundle_result.status);
strbuf_puts(sb, "Serval-Rhizome-Result-Bundle-Status-Message: ");
strbuf_json_string(sb, rhizome_bundle_result_message_nonnull(r->bundle_result));
strbuf_puts(sb, "\r\n");
break;
}
const char *status_message = rhizome_payload_status_message(r->payload_status);
if (status_message) {
strbuf_sprintf(sb, "Serval-Rhizome-Result-Payload-Status-Code: %d\r\n", r->payload_status);
strbuf_puts(sb, "Serval-Rhizome-Result-Payload-Status-Message: ");
strbuf_json_string(sb, status_message);
strbuf_puts(sb, "\r\n");
}
rhizome_manifest *m = r->manifest;
if (m) {
if (m->has_id)
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-Id: %s\r\n", alloca_tohex_rhizome_bid_t(m->cryptoSignPublic));
if (m->version)
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-Version: %"PRIu64"\r\n", m->version);
if (m->filesize != RHIZOME_SIZE_UNSET)
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-Filesize: %"PRIu64"\r\n", m->filesize);
if (m->has_filehash)
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-Filehash: %s\r\n", alloca_tohex_rhizome_filehash_t(m->filehash));
if (m->has_sender)
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-Sender: %s\r\n", alloca_tohex_sid_t(m->sender));
if (m->has_recipient)
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-Recipient: %s\r\n", alloca_tohex_sid_t(m->recipient));
if (m->has_bundle_key)
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-BK: %s\r\n", alloca_tohex_rhizome_bk_t(m->bundle_key));
switch (m->payloadEncryption) {
case PAYLOAD_CRYPT_UNKNOWN:
break;
case PAYLOAD_CLEAR:
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-Crypt: 0\r\n");
break;
case PAYLOAD_ENCRYPTED:
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-Crypt: 1\r\n");
break;
}
if (m->is_journal)
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-Tail: %"PRIu64"\r\n", m->tail);
if (m->has_date)
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-Date: %"PRIu64"\r\n", m->date);
if (m->name) {
strbuf_puts(sb, "Serval-Rhizome-Bundle-Name: ");
strbuf_append_quoted_string(sb, m->name);
strbuf_puts(sb, "\r\n");
}
if (m->service)
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-Service: %s\r\n", m->service);
assert(m->authorship != AUTHOR_LOCAL);
if (m->authorship == AUTHOR_AUTHENTIC)
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-Author: %s\r\n", alloca_tohex_sid_t(m->author));
if (m->haveSecret) {
char secret[RHIZOME_BUNDLE_KEY_STRLEN + 1];
rhizome_bytes_to_hex_upper(m->cryptoSignSecret, secret, RHIZOME_BUNDLE_KEY_BYTES);
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-Secret: %s\r\n", secret);
}
if (m->rowid)
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-Rowid: %"PRIu64"\r\n", m->rowid);
if (m->inserttime)
strbuf_sprintf(sb, "Serval-Rhizome-Bundle-Inserttime: %"PRIu64"\r\n", m->inserttime);
}
}
Reference in New Issue View Git Blame Copy Permalink