init repo.
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tqcq
396
third_party/curl/lib/dynhds.c
vendored
Normal file
396
third_party/curl/lib/dynhds.c
vendored
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@ -0,0 +1,396 @@
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#include "curl_setup.h"
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#include "dynhds.h"
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#include "strcase.h"
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/* The last 3 #include files should be in this order */
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#ifdef USE_NGHTTP2
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#include <stdint.h>
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#include <nghttp2/nghttp2.h>
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#endif /* USE_NGHTTP2 */
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#include "curl_printf.h"
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#include "curl_memory.h"
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#include "memdebug.h"
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static struct dynhds_entry *
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entry_new(const char *name, size_t namelen,
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const char *value, size_t valuelen, int opts)
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{
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struct dynhds_entry *e;
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char *p;
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DEBUGASSERT(name);
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DEBUGASSERT(value);
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e = calloc(1, sizeof(*e) + namelen + valuelen + 2);
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if(!e)
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return NULL;
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e->name = p = ((char *)e) + sizeof(*e);
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memcpy(p, name, namelen);
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e->namelen = namelen;
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e->value = p += namelen + 1; /* leave a \0 at the end of name */
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memcpy(p, value, valuelen);
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e->valuelen = valuelen;
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if(opts & DYNHDS_OPT_LOWERCASE)
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Curl_strntolower(e->name, e->name, e->namelen);
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return e;
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}
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static struct dynhds_entry *
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entry_append(struct dynhds_entry *e,
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const char *value, size_t valuelen)
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{
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struct dynhds_entry *e2;
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size_t valuelen2 = e->valuelen + 1 + valuelen;
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char *p;
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DEBUGASSERT(value);
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e2 = calloc(1, sizeof(*e) + e->namelen + valuelen2 + 2);
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if(!e2)
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return NULL;
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e2->name = p = ((char *)e2) + sizeof(*e2);
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memcpy(p, e->name, e->namelen);
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e2->namelen = e->namelen;
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e2->value = p += e->namelen + 1; /* leave a \0 at the end of name */
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memcpy(p, e->value, e->valuelen);
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p += e->valuelen;
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p[0] = ' ';
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memcpy(p + 1, value, valuelen);
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e2->valuelen = valuelen2;
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return e2;
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}
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static void entry_free(struct dynhds_entry *e)
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{
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free(e);
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}
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void Curl_dynhds_init(struct dynhds *dynhds, size_t max_entries,
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size_t max_strs_size)
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{
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DEBUGASSERT(dynhds);
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DEBUGASSERT(max_strs_size);
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dynhds->hds = NULL;
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dynhds->hds_len = dynhds->hds_allc = dynhds->strs_len = 0;
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dynhds->max_entries = max_entries;
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dynhds->max_strs_size = max_strs_size;
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dynhds->opts = 0;
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}
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void Curl_dynhds_free(struct dynhds *dynhds)
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{
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DEBUGASSERT(dynhds);
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if(dynhds->hds && dynhds->hds_len) {
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size_t i;
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DEBUGASSERT(dynhds->hds);
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for(i = 0; i < dynhds->hds_len; ++i) {
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entry_free(dynhds->hds[i]);
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}
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}
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Curl_safefree(dynhds->hds);
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dynhds->hds_len = dynhds->hds_allc = dynhds->strs_len = 0;
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}
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void Curl_dynhds_reset(struct dynhds *dynhds)
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{
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DEBUGASSERT(dynhds);
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if(dynhds->hds_len) {
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size_t i;
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DEBUGASSERT(dynhds->hds);
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for(i = 0; i < dynhds->hds_len; ++i) {
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entry_free(dynhds->hds[i]);
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dynhds->hds[i] = NULL;
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}
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}
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dynhds->hds_len = dynhds->strs_len = 0;
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}
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size_t Curl_dynhds_count(struct dynhds *dynhds)
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{
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return dynhds->hds_len;
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}
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void Curl_dynhds_set_opts(struct dynhds *dynhds, int opts)
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{
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dynhds->opts = opts;
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}
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struct dynhds_entry *Curl_dynhds_getn(struct dynhds *dynhds, size_t n)
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{
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DEBUGASSERT(dynhds);
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return (n < dynhds->hds_len)? dynhds->hds[n] : NULL;
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}
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struct dynhds_entry *Curl_dynhds_get(struct dynhds *dynhds, const char *name,
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size_t namelen)
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{
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size_t i;
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for(i = 0; i < dynhds->hds_len; ++i) {
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if(dynhds->hds[i]->namelen == namelen &&
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strncasecompare(dynhds->hds[i]->name, name, namelen)) {
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return dynhds->hds[i];
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}
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}
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return NULL;
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}
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struct dynhds_entry *Curl_dynhds_cget(struct dynhds *dynhds, const char *name)
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{
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return Curl_dynhds_get(dynhds, name, strlen(name));
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}
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CURLcode Curl_dynhds_add(struct dynhds *dynhds,
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const char *name, size_t namelen,
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const char *value, size_t valuelen)
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{
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struct dynhds_entry *entry = NULL;
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CURLcode result = CURLE_OUT_OF_MEMORY;
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DEBUGASSERT(dynhds);
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if(dynhds->max_entries && dynhds->hds_len >= dynhds->max_entries)
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return CURLE_OUT_OF_MEMORY;
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if(dynhds->strs_len + namelen + valuelen > dynhds->max_strs_size)
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return CURLE_OUT_OF_MEMORY;
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entry = entry_new(name, namelen, value, valuelen, dynhds->opts);
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if(!entry)
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goto out;
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if(dynhds->hds_len + 1 >= dynhds->hds_allc) {
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size_t nallc = dynhds->hds_len + 16;
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struct dynhds_entry **nhds;
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if(dynhds->max_entries && nallc > dynhds->max_entries)
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nallc = dynhds->max_entries;
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nhds = calloc(nallc, sizeof(struct dynhds_entry *));
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if(!nhds)
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goto out;
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if(dynhds->hds) {
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memcpy(nhds, dynhds->hds,
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dynhds->hds_len * sizeof(struct dynhds_entry *));
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Curl_safefree(dynhds->hds);
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}
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dynhds->hds = nhds;
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dynhds->hds_allc = nallc;
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}
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dynhds->hds[dynhds->hds_len++] = entry;
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entry = NULL;
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dynhds->strs_len += namelen + valuelen;
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result = CURLE_OK;
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out:
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if(entry)
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entry_free(entry);
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return result;
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}
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CURLcode Curl_dynhds_cadd(struct dynhds *dynhds,
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const char *name, const char *value)
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{
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return Curl_dynhds_add(dynhds, name, strlen(name), value, strlen(value));
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}
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CURLcode Curl_dynhds_h1_add_line(struct dynhds *dynhds,
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const char *line, size_t line_len)
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{
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const char *p;
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const char *name;
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size_t namelen;
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const char *value;
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size_t valuelen, i;
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if(!line || !line_len)
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return CURLE_OK;
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if((line[0] == ' ') || (line[0] == '\t')) {
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struct dynhds_entry *e, *e2;
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/* header continuation, yikes! */
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if(!dynhds->hds_len)
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return CURLE_BAD_FUNCTION_ARGUMENT;
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while(line_len && ISBLANK(line[0])) {
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++line;
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--line_len;
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}
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if(!line_len)
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return CURLE_BAD_FUNCTION_ARGUMENT;
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e = dynhds->hds[dynhds->hds_len-1];
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e2 = entry_append(e, line, line_len);
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if(!e2)
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return CURLE_OUT_OF_MEMORY;
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dynhds->hds[dynhds->hds_len-1] = e2;
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entry_free(e);
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return CURLE_OK;
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}
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else {
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p = memchr(line, ':', line_len);
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if(!p)
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return CURLE_BAD_FUNCTION_ARGUMENT;
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name = line;
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namelen = p - line;
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p++; /* move past the colon */
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for(i = namelen + 1; i < line_len; ++i, ++p) {
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if(!ISBLANK(*p))
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break;
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}
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value = p;
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valuelen = line_len - i;
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p = memchr(value, '\r', valuelen);
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if(!p)
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p = memchr(value, '\n', valuelen);
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if(p)
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valuelen = (size_t)(p - value);
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return Curl_dynhds_add(dynhds, name, namelen, value, valuelen);
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}
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}
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CURLcode Curl_dynhds_h1_cadd_line(struct dynhds *dynhds, const char *line)
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{
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return Curl_dynhds_h1_add_line(dynhds, line, line? strlen(line) : 0);
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}
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#ifdef DEBUGBUILD
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/* used by unit2602.c */
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bool Curl_dynhds_contains(struct dynhds *dynhds,
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const char *name, size_t namelen)
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{
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return !!Curl_dynhds_get(dynhds, name, namelen);
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}
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bool Curl_dynhds_ccontains(struct dynhds *dynhds, const char *name)
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{
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return Curl_dynhds_contains(dynhds, name, strlen(name));
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}
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size_t Curl_dynhds_count_name(struct dynhds *dynhds,
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const char *name, size_t namelen)
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{
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size_t n = 0;
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if(dynhds->hds_len) {
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size_t i;
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for(i = 0; i < dynhds->hds_len; ++i) {
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if((namelen == dynhds->hds[i]->namelen) &&
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strncasecompare(name, dynhds->hds[i]->name, namelen))
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++n;
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}
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}
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return n;
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}
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size_t Curl_dynhds_ccount_name(struct dynhds *dynhds, const char *name)
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{
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return Curl_dynhds_count_name(dynhds, name, strlen(name));
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}
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CURLcode Curl_dynhds_set(struct dynhds *dynhds,
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const char *name, size_t namelen,
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const char *value, size_t valuelen)
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{
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Curl_dynhds_remove(dynhds, name, namelen);
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return Curl_dynhds_add(dynhds, name, namelen, value, valuelen);
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}
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size_t Curl_dynhds_remove(struct dynhds *dynhds,
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const char *name, size_t namelen)
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{
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size_t n = 0;
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if(dynhds->hds_len) {
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size_t i, len;
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for(i = 0; i < dynhds->hds_len; ++i) {
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if((namelen == dynhds->hds[i]->namelen) &&
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strncasecompare(name, dynhds->hds[i]->name, namelen)) {
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++n;
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--dynhds->hds_len;
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dynhds->strs_len -= (dynhds->hds[i]->namelen +
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dynhds->hds[i]->valuelen);
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entry_free(dynhds->hds[i]);
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len = dynhds->hds_len - i; /* remaining entries */
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if(len) {
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memmove(&dynhds->hds[i], &dynhds->hds[i + 1],
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len * sizeof(dynhds->hds[i]));
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}
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--i; /* do this index again */
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}
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}
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}
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return n;
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}
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size_t Curl_dynhds_cremove(struct dynhds *dynhds, const char *name)
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{
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return Curl_dynhds_remove(dynhds, name, strlen(name));
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}
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#endif
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CURLcode Curl_dynhds_h1_dprint(struct dynhds *dynhds, struct dynbuf *dbuf)
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{
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CURLcode result = CURLE_OK;
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size_t i;
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if(!dynhds->hds_len)
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return result;
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for(i = 0; i < dynhds->hds_len; ++i) {
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result = Curl_dyn_addf(dbuf, "%.*s: %.*s\r\n",
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(int)dynhds->hds[i]->namelen, dynhds->hds[i]->name,
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(int)dynhds->hds[i]->valuelen, dynhds->hds[i]->value);
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if(result)
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break;
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}
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return result;
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}
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#ifdef USE_NGHTTP2
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nghttp2_nv *Curl_dynhds_to_nva(struct dynhds *dynhds, size_t *pcount)
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{
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nghttp2_nv *nva = calloc(1, sizeof(nghttp2_nv) * dynhds->hds_len);
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size_t i;
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*pcount = 0;
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if(!nva)
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return NULL;
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for(i = 0; i < dynhds->hds_len; ++i) {
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struct dynhds_entry *e = dynhds->hds[i];
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DEBUGASSERT(e);
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nva[i].name = (unsigned char *)e->name;
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nva[i].namelen = e->namelen;
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nva[i].value = (unsigned char *)e->value;
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nva[i].valuelen = e->valuelen;
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nva[i].flags = NGHTTP2_NV_FLAG_NONE;
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}
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*pcount = dynhds->hds_len;
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return nva;
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}
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#endif /* USE_NGHTTP2 */
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Reference in New Issue
Block a user