mirror of
https://github.com/warmcat/libwebsockets.git
synced 2025-03-16 00:00:07 +01:00
c1a3defb88
Remove the auth lws_system stuff and redo it using generic blobs with separate namespaces. Support pointing to already-in-memory blobs without using heap as well as multi-fragment appened blobs eg, parsed out of JSON chunk by chunk and chained in heap. Support auth the new way, along with client cert + key in DER namespaces.
143 lines
3.2 KiB
C
143 lines
3.2 KiB
C
/*
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* libwebsockets - small server side websockets and web server implementation
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*
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* Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include <private-lib-core.h>
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/*
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* It's either a buflist (.is_direct = 0) or
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* a direct pointer + len (.is_direct = 1)
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*/
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const lws_system_ops_t *
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lws_system_get_ops(struct lws_context *context)
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{
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return context->system_ops;
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}
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void
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lws_system_blob_direct_set(lws_system_blob_t *b, const uint8_t *ptr, size_t len)
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{
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b->is_direct = 1;
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b->u.direct.ptr = ptr;
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b->u.direct.len = len;
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}
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void
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lws_system_blob_heap_empty(lws_system_blob_t *b)
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{
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b->is_direct = 0;
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lws_buflist_destroy_all_segments(&b->u.bl);
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}
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int
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lws_system_blob_heap_append(lws_system_blob_t *b, const uint8_t *buf, size_t len)
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{
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assert(!b->is_direct);
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if (lws_buflist_append_segment(&b->u.bl, buf, len) < 0)
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return -1;
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return 0;
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}
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size_t
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lws_system_blob_get_size(lws_system_blob_t *b)
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{
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if (b->is_direct)
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return b->u.direct.len;
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return lws_buflist_total_len(&b->u.bl);
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}
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int
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lws_system_blob_get(lws_system_blob_t *b, uint8_t *buf, size_t *len, size_t ofs)
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{
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int n;
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if (b->is_direct) {
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assert(b->u.direct.ptr);
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if (ofs >= b->u.direct.len) {
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*len = 0;
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return 1;
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}
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if (*len > b->u.direct.len - ofs)
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*len = b->u.direct.len - ofs;
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memcpy(buf, b->u.direct.ptr + ofs, *len);
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return 0;
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}
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n = lws_buflist_linear_copy(&b->u.bl, ofs, buf, *len);
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if (n < 0)
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return -2;
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*len = n;
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return 0;
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}
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int
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lws_system_blob_get_single_ptr(lws_system_blob_t *b, const uint8_t **ptr)
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{
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if (b->is_direct) {
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*ptr = b->u.direct.ptr;
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return 0;
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}
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if (!b->u.bl)
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return -1;
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if (b->u.bl->next)
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return -1; /* multipart buflist, no single pointer to it all */
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*ptr = (const uint8_t *)&b->u.bl[1];
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return 0;
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}
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void
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lws_system_blob_destroy(lws_system_blob_t *b)
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{
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if (!b)
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return;
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if (!b->is_direct)
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lws_buflist_destroy_all_segments(&b->u.bl);
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}
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lws_system_blob_t *
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lws_system_get_blob(struct lws_context *context, lws_system_blob_item_t type,
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int idx)
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{
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if (idx < 0 ||
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idx >= (int)LWS_ARRAY_SIZE(context->system_blobs))
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return NULL;
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return &context->system_blobs[type + idx];
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}
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