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| /* http_convert.c -- Routines for converting media types over HTTP | ||
| * | ||
| * Copyright (c) 1994-2023 Carnegie Mellon University. All rights reserved. | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions | ||
| * are met: | ||
| * | ||
| * 1. Redistributions of source code must retain the above copyright | ||
| * notice, this list of conditions and the following disclaimer. | ||
| * | ||
| * 2. Redistributions in binary form must reproduce the above copyright | ||
| * notice, this list of conditions and the following disclaimer in | ||
| * the documentation and/or other materials provided with the | ||
| * distribution. | ||
| * | ||
| * 3. The name "Carnegie Mellon University" must not be used to | ||
| * endorse or promote products derived from this software without | ||
| * prior written permission. For permission or any legal | ||
| * details, please contact | ||
| * Carnegie Mellon University | ||
| * Center for Technology Transfer and Enterprise Creation | ||
| * 4615 Forbes Avenue | ||
| * Suite 302 | ||
| * Pittsburgh, PA 15213 | ||
| * (412) 268-7393, fax: (412) 268-7395 | ||
| * innovation@andrew.cmu.edu | ||
| * | ||
| * 4. Redistributions of any form whatsoever must retain the following | ||
| * acknowledgment: | ||
| * "This product includes software developed by Computing Services | ||
| * at Carnegie Mellon University (http://www.cmu.edu/computing/)." | ||
| * | ||
| * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO | ||
| * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY | ||
| * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE | ||
| * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | ||
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN | ||
| * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING | ||
| * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | ||
| * | ||
| */ | ||
|
|
||
| #include <config.h> | ||
|
|
||
| #ifdef HAVE_UNISTD_H | ||
| #include <unistd.h> | ||
| #endif | ||
| #include <ctype.h> | ||
| #include <string.h> | ||
| #include <syslog.h> | ||
| #include <assert.h> | ||
|
|
||
| #include "acl.h" | ||
| #include "annotate.h" | ||
| #include "charset.h" | ||
| #include "global.h" | ||
| #include "httpd.h" | ||
| #include "http_proxy.h" | ||
| #include "jmap_ical.h" | ||
| #include "mailbox.h" | ||
| #include "map.h" | ||
| #include "mboxlist.h" | ||
| #include "message.h" | ||
| #include "parseaddr.h" | ||
| #include "proxy.h" | ||
| #include "times.h" | ||
| #include "seen.h" | ||
| #include "tok.h" | ||
| #include "util.h" | ||
| #include "version.h" | ||
| #include "wildmat.h" | ||
| #include "xmalloc.h" | ||
| #include "xstrlcpy.h" | ||
|
|
||
| /* generated headers are not necessarily in current directory */ | ||
| #include "imap/http_err.h" | ||
| #include "imap/imap_err.h" | ||
|
|
||
| static void convert_init(struct buf *serverinfo); | ||
| static int meth_post(struct transaction_t *txn, void *params); | ||
|
|
||
| struct namespace_t namespace_convert = { | ||
| URL_NS_DEFAULT, 0, "convert", "/convert", NULL, | ||
| http_allow_noauth_get, /*authschemes*/0, | ||
| /*mbtype*/0, | ||
| ALLOW_POST, | ||
| convert_init, NULL, NULL, NULL, NULL, | ||
| { | ||
| { NULL, NULL }, /* ACL */ | ||
| { NULL, NULL }, /* BIND */ | ||
| { NULL, NULL }, /* CONNECT */ | ||
| { NULL, NULL }, /* COPY */ | ||
| { NULL, NULL }, /* DELETE */ | ||
| { NULL, NULL }, /* GET */ | ||
| { NULL, NULL }, /* HEAD */ | ||
| { NULL, NULL }, /* LOCK */ | ||
| { NULL, NULL }, /* MKCALENDAR */ | ||
| { NULL, NULL }, /* MKCOL */ | ||
| { NULL, NULL }, /* MOVE */ | ||
| { NULL, NULL }, /* OPTIONS */ | ||
| { NULL, NULL }, /* PATCH */ | ||
| { &meth_post, NULL }, /* POST */ | ||
| { NULL, NULL }, /* PROPFIND */ | ||
| { NULL, NULL }, /* PROPPATCH */ | ||
| { NULL, NULL }, /* PUT */ | ||
| { NULL, NULL }, /* REPORT */ | ||
| { NULL, NULL }, /* SEARCH */ | ||
| { NULL, NULL }, /* TRACE */ | ||
| { NULL, NULL }, /* UNBIND */ | ||
| { NULL, NULL } /* UNLOCK */ | ||
| } | ||
| }; | ||
|
|
||
|
|
||
| static void convert_init(struct buf *serverinfo __attribute__((unused))) | ||
| { | ||
| namespace_convert.enabled = config_httpmodules & IMAP_ENUM_HTTPMODULES_CONVERT; | ||
| } | ||
|
|
||
| static int convert_parse_path(const char *path, struct request_target_t *tgt, | ||
| const char **resultstr) | ||
| { | ||
| size_t len; | ||
| char *p; | ||
|
|
||
| if (*tgt->path) return 0; /* Already parsed */ | ||
|
|
||
| /* Make a working copy of target path */ | ||
| strlcpy(tgt->path, path, sizeof(tgt->path)); | ||
| p = tgt->path; | ||
|
|
||
| /* Sanity check namespace */ | ||
| len = strlen(namespace_convert.prefix); | ||
| if (strlen(p) < len || | ||
| strncmp(namespace_convert.prefix, p, len) || | ||
| (path[len] && path[len] != '/')) { | ||
| *resultstr = "Namespace mismatch request target path"; | ||
| return HTTP_FORBIDDEN; | ||
| } | ||
|
|
||
| /* Always allow read, even if no content */ | ||
| tgt->allow = ALLOW_READ; | ||
|
|
||
| /* Skip namespace */ | ||
| p += len; | ||
|
|
||
| /* Check for path after prefix */ | ||
| if (*p == '/') p++; | ||
| if (*p) return HTTP_NOT_FOUND; | ||
|
|
||
| tgt->allow |= ALLOW_POST; | ||
|
|
||
| return 0; | ||
| } | ||
|
|
||
| /* Perform a POST request */ | ||
| static int meth_post(struct transaction_t *txn, | ||
| void *params __attribute__((unused))) | ||
| { | ||
| icalcomponent *ical = NULL; | ||
| json_t *jval = NULL; | ||
| struct buf buf = BUF_INITIALIZER; | ||
| char *resp_payload = NULL; | ||
|
|
||
| int ret = convert_parse_path(txn->req_uri->path, | ||
| &txn->req_tgt, &txn->error.desc); | ||
| if (ret) return ret; | ||
|
|
||
| if (!(txn->req_tgt.allow & ALLOW_POST)) { | ||
| ret = HTTP_NOT_ALLOWED; | ||
| goto done; | ||
| } | ||
|
|
||
| /* Check Content-Type */ | ||
| const char **hdr = spool_getheader(txn->req_hdrs, "Content-Type"); | ||
| if (!hdr || !is_mediatype("text/calendar", hdr[0])) { | ||
| txn->error.desc = "This method requires a text/calendar body"; | ||
| ret = HTTP_BAD_MEDIATYPE; | ||
| goto done; | ||
| } | ||
|
|
||
| /* Read body */ | ||
| ret = http_read_req_body(txn); | ||
| if (ret) { | ||
| txn->flags.conn = CONN_CLOSE; | ||
| goto done; | ||
| } | ||
|
|
||
| /* Parse the request body */ | ||
| ical = icalparser_parse_string(buf_cstring(&txn->req_body.payload)); | ||
| if (!ical) { | ||
| txn->error.desc = "Could not parse iCalendar data"; | ||
| ret = HTTP_BAD_REQUEST; | ||
| goto done; | ||
| } | ||
|
|
||
| /* Convert to JSCalendar */ | ||
| jval = jmapical_vcalendar_to_jsgroup(ical); | ||
| if (!jval) { | ||
| txn->error.desc = "Could not convert to JSCalendar"; | ||
| ret = HTTP_SERVER_ERROR; | ||
| goto done; | ||
| } | ||
|
|
||
| /* Write the response */ | ||
| resp_payload = json_dumps(jval, JSON_PRESERVE_ORDER | | ||
| (config_httpprettytelemetry ? JSON_INDENT(2) : JSON_COMPACT)); | ||
| if (!resp_payload) { | ||
| txn->error.desc = "Error dumping JSON object"; | ||
| ret = HTTP_SERVER_ERROR; | ||
| goto done; | ||
| } | ||
| txn->resp_body.type = "application/jscalendar+json;type=group"; | ||
| write_body(HTTP_OK, txn, resp_payload, strlen(resp_payload)); | ||
|
|
||
| done: | ||
| if (ical) icalcomponent_free(ical); | ||
| json_decref(jval); | ||
| buf_free(&buf); | ||
| free(resp_payload); | ||
| return ret; | ||
| } |
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