/src/PROJ/curl/lib/dynhds.c

Source (jump to first uncovered line)
/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution. The terms
 * are also available at https://curl.se/docs/copyright.html.
 *
 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 * copies of the Software, and permit persons to whom the Software is
 * furnished to do so, under the terms of the COPYING file.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 * SPDX-License-Identifier: curl
 *
 ***************************************************************************/

#include "curl_setup.h"
#include "dynhds.h"
#include "strcase.h"

/* The last 3 #include files should be in this order */
#ifdef USE_NGHTTP2
#include <stdint.h>
#include <nghttp2/nghttp2.h>
#endif /* USE_NGHTTP2 */
#include "curl_printf.h"
#include "curl_memory.h"
#include "memdebug.h"


static struct dynhds_entry *
entry_new(const char *name, size_t namelen,
          const char *value, size_t valuelen, int opts)
{
  struct dynhds_entry *e;
  char *p;

  DEBUGASSERT(name);
  DEBUGASSERT(value);
  e = calloc(1, sizeof(*e) + namelen + valuelen + 2);
  if(!e)
    return NULL;
  e->name = p = ((char *)e) + sizeof(*e);
  memcpy(p, name, namelen);
  e->namelen = namelen;
  e->value = p += namelen + 1; /* leave a \0 at the end of name */
  memcpy(p, value, valuelen);
  e->valuelen = valuelen;
  if(opts & DYNHDS_OPT_LOWERCASE)
    Curl_strntolower(e->name, e->name, e->namelen);
  return e;
}

static struct dynhds_entry *
entry_append(struct dynhds_entry *e,
             const char *value, size_t valuelen)
{
  struct dynhds_entry *e2;
  size_t valuelen2 = e->valuelen + 1 + valuelen;
  char *p;

  DEBUGASSERT(value);
  e2 = calloc(1, sizeof(*e) + e->namelen + valuelen2 + 2);
  if(!e2)
    return NULL;
  e2->name = p = ((char *)e2) + sizeof(*e2);
  memcpy(p, e->name, e->namelen);
  e2->namelen = e->namelen;
  e2->value = p += e->namelen + 1; /* leave a \0 at the end of name */
  memcpy(p, e->value, e->valuelen);
  p += e->valuelen;
  p[0] = ' ';
  memcpy(p + 1, value, valuelen);
  e2->valuelen = valuelen2;
  return e2;
}

static void entry_free(struct dynhds_entry *e)
{
  free(e);
}

void Curl_dynhds_init(struct dynhds *dynhds, size_t max_entries,
                      size_t max_strs_size)
{
  DEBUGASSERT(dynhds);
  DEBUGASSERT(max_strs_size);
  dynhds->hds = NULL;
  dynhds->hds_len = dynhds->hds_allc = dynhds->strs_len = 0;
  dynhds->max_entries = max_entries;
  dynhds->max_strs_size = max_strs_size;
  dynhds->opts = 0;
}

void Curl_dynhds_free(struct dynhds *dynhds)
{
  DEBUGASSERT(dynhds);
  if(dynhds->hds && dynhds->hds_len) {
    size_t i;
    DEBUGASSERT(dynhds->hds);
    for(i = 0; i < dynhds->hds_len; ++i) {
      entry_free(dynhds->hds[i]);
    }
  }
  Curl_safefree(dynhds->hds);
  dynhds->hds_len = dynhds->hds_allc = dynhds->strs_len = 0;
}

void Curl_dynhds_reset(struct dynhds *dynhds)
{
  DEBUGASSERT(dynhds);
  if(dynhds->hds_len) {
    size_t i;
    DEBUGASSERT(dynhds->hds);
    for(i = 0; i < dynhds->hds_len; ++i) {
      entry_free(dynhds->hds[i]);
      dynhds->hds[i] = NULL;
    }
  }
  dynhds->hds_len = dynhds->strs_len = 0;
}

size_t Curl_dynhds_count(struct dynhds *dynhds)
{
  return dynhds->hds_len;
}

void Curl_dynhds_set_opts(struct dynhds *dynhds, int opts)
{
  dynhds->opts = opts;
}

struct dynhds_entry *Curl_dynhds_getn(struct dynhds *dynhds, size_t n)
{
  DEBUGASSERT(dynhds);
  return (n < dynhds->hds_len)? dynhds->hds[n] : NULL;
}

struct dynhds_entry *Curl_dynhds_get(struct dynhds *dynhds, const char *name,
                                     size_t namelen)
{
  size_t i;
  for(i = 0; i < dynhds->hds_len; ++i) {
    if(dynhds->hds[i]->namelen == namelen &&
       strncasecompare(dynhds->hds[i]->name, name, namelen)) {
      return dynhds->hds[i];
    }
  }
  return NULL;
}

struct dynhds_entry *Curl_dynhds_cget(struct dynhds *dynhds, const char *name)
{
  return Curl_dynhds_get(dynhds, name, strlen(name));
}

CURLcode Curl_dynhds_add(struct dynhds *dynhds,
                         const char *name, size_t namelen,
                         const char *value, size_t valuelen)
{
  struct dynhds_entry *entry = NULL;
  CURLcode result = CURLE_OUT_OF_MEMORY;

  DEBUGASSERT(dynhds);
  if(dynhds->max_entries && dynhds->hds_len >= dynhds->max_entries)
    return CURLE_OUT_OF_MEMORY;
  if(dynhds->strs_len + namelen + valuelen > dynhds->max_strs_size)
    return CURLE_OUT_OF_MEMORY;

entry = entry_new(name, namelen, value, valuelen, dynhds->opts);
  if(!entry)
    goto out;

  if(dynhds->hds_len + 1 >= dynhds->hds_allc) {
    size_t nallc = dynhds->hds_len + 16;
    struct dynhds_entry **nhds;

    if(dynhds->max_entries && nallc > dynhds->max_entries)
      nallc = dynhds->max_entries;

    nhds = calloc(nallc, sizeof(struct dynhds_entry *));
    if(!nhds)
      goto out;
    if(dynhds->hds) {
      memcpy(nhds, dynhds->hds,
             dynhds->hds_len * sizeof(struct dynhds_entry *));
      Curl_safefree(dynhds->hds);
    }
    dynhds->hds = nhds;
    dynhds->hds_allc = nallc;
  }
  dynhds->hds[dynhds->hds_len++] = entry;
  entry = NULL;
  dynhds->strs_len += namelen + valuelen;
  result = CURLE_OK;

out:
  if(entry)
    entry_free(entry);
  return result;
}

CURLcode Curl_dynhds_cadd(struct dynhds *dynhds,
                          const char *name, const char *value)
{
  return Curl_dynhds_add(dynhds, name, strlen(name), value, strlen(value));
}

CURLcode Curl_dynhds_h1_add_line(struct dynhds *dynhds,
                                 const char *line, size_t line_len)
{
  const char *p;
  const char *name;
  size_t namelen;
  const char *value;
  size_t valuelen, i;

  if(!line || !line_len)
    return CURLE_OK;

  if((line[0] == ' ') || (line[0] == '\t')) {
    struct dynhds_entry *e, *e2;
    /* header continuation, yikes! */
    if(!dynhds->hds_len)
      return CURLE_BAD_FUNCTION_ARGUMENT;

    while(line_len && ISBLANK(line[0])) {
      ++line;
      --line_len;
    }
    if(!line_len)
      return CURLE_BAD_FUNCTION_ARGUMENT;
    e = dynhds->hds[dynhds->hds_len-1];
    e2 = entry_append(e, line, line_len);
    if(!e2)
      return CURLE_OUT_OF_MEMORY;
    dynhds->hds[dynhds->hds_len-1] = e2;
    entry_free(e);
    return CURLE_OK;
  }
  else {
    p = memchr(line, ':', line_len);
    if(!p)
      return CURLE_BAD_FUNCTION_ARGUMENT;
    name = line;
    namelen = p - line;
    p++; /* move past the colon */
    for(i = namelen + 1; i < line_len; ++i, ++p) {
      if(!ISBLANK(*p))
        break;
    }
    value = p;
    valuelen = line_len - i;

    p = memchr(value, '\r', valuelen);
    if(!p)
      p = memchr(value, '\n', valuelen);
    if(p)
      valuelen = (size_t)(p - value);

    return Curl_dynhds_add(dynhds, name, namelen, value, valuelen);
  }
}

CURLcode Curl_dynhds_h1_cadd_line(struct dynhds *dynhds, const char *line)
{
  return Curl_dynhds_h1_add_line(dynhds, line, line? strlen(line) : 0);
}

#ifdef DEBUGBUILD
/* used by unit2602.c */

bool Curl_dynhds_contains(struct dynhds *dynhds,
                          const char *name, size_t namelen)
{
  return !!Curl_dynhds_get(dynhds, name, namelen);
}

bool Curl_dynhds_ccontains(struct dynhds *dynhds, const char *name)
{
  return Curl_dynhds_contains(dynhds, name, strlen(name));
}

size_t Curl_dynhds_count_name(struct dynhds *dynhds,
                              const char *name, size_t namelen)
{
  size_t n = 0;
  if(dynhds->hds_len) {
    size_t i;
    for(i = 0; i < dynhds->hds_len; ++i) {
      if((namelen == dynhds->hds[i]->namelen) &&
         strncasecompare(name, dynhds->hds[i]->name, namelen))
        ++n;
    }
  }
  return n;
}

size_t Curl_dynhds_ccount_name(struct dynhds *dynhds, const char *name)
{
  return Curl_dynhds_count_name(dynhds, name, strlen(name));
}

CURLcode Curl_dynhds_set(struct dynhds *dynhds,
                         const char *name, size_t namelen,
                         const char *value, size_t valuelen)
{
  Curl_dynhds_remove(dynhds, name, namelen);
  return Curl_dynhds_add(dynhds, name, namelen, value, valuelen);
}

size_t Curl_dynhds_remove(struct dynhds *dynhds,
                          const char *name, size_t namelen)
{
  size_t n = 0;
  if(dynhds->hds_len) {
    size_t i, len;
    for(i = 0; i < dynhds->hds_len; ++i) {
      if((namelen == dynhds->hds[i]->namelen) &&
         strncasecompare(name, dynhds->hds[i]->name, namelen)) {
        ++n;
        --dynhds->hds_len;
        dynhds->strs_len -= (dynhds->hds[i]->namelen +
                             dynhds->hds[i]->valuelen);
        entry_free(dynhds->hds[i]);
        len = dynhds->hds_len - i; /* remaining entries */
        if(len) {
          memmove(&dynhds->hds[i], &dynhds->hds[i + 1],
                  len * sizeof(dynhds->hds[i]));
        }
        --i; /* do this index again */
      }
    }
  }
  return n;
}

size_t Curl_dynhds_cremove(struct dynhds *dynhds, const char *name)
{
  return Curl_dynhds_remove(dynhds, name, strlen(name));
}

#endif

CURLcode Curl_dynhds_h1_dprint(struct dynhds *dynhds, struct dynbuf *dbuf)
{
  CURLcode result = CURLE_OK;
  size_t i;

  if(!dynhds->hds_len)
    return result;

  for(i = 0; i < dynhds->hds_len; ++i) {
    result = Curl_dyn_addf(dbuf, "%.*s: %.*s\r\n",
               (int)dynhds->hds[i]->namelen, dynhds->hds[i]->name,
               (int)dynhds->hds[i]->valuelen, dynhds->hds[i]->value);
    if(result)
      break;
  }

  return result;
}

#ifdef USE_NGHTTP2

nghttp2_nv *Curl_dynhds_to_nva(struct dynhds *dynhds, size_t *pcount)
{
  nghttp2_nv *nva = calloc(1, sizeof(nghttp2_nv) * dynhds->hds_len);
  size_t i;

  *pcount = 0;
  if(!nva)
    return NULL;

  for(i = 0; i < dynhds->hds_len; ++i) {
    struct dynhds_entry *e = dynhds->hds[i];
    DEBUGASSERT(e);
    nva[i].name = (unsigned char *)e->name;
    nva[i].namelen = e->namelen;
    nva[i].value = (unsigned char *)e->value;
    nva[i].valuelen = e->valuelen;
    nva[i].flags = NGHTTP2_NV_FLAG_NONE;
  }
  *pcount = dynhds->hds_len;
  return nva;
}

#endif /* USE_NGHTTP2 */

Coverage Report

Created: 2024-02-25 06:14

Line	Count	Source (jump to first uncovered line)
1		/***************************************************************************
2		* _ _ ____ _
3		* Project ___\| \| \| \| _ \\| \|
4		* / __\| \| \| \| \|_) \| \|
5		* \| (__\| \|_\| \| _ <\| \|___
6		* \___\|\___/\|_\| \_\_____\|
7		*
8		* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
9		*
10		* This software is licensed as described in the file COPYING, which
11		* you should have received as part of this distribution. The terms
12		* are also available at https://curl.se/docs/copyright.html.
13		*
14		* You may opt to use, copy, modify, merge, publish, distribute and/or sell
15		* copies of the Software, and permit persons to whom the Software is
16		* furnished to do so, under the terms of the COPYING file.
17		*
18		* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19		* KIND, either express or implied.
20		*
21		* SPDX-License-Identifier: curl
22		*
23		***************************************************************************/
24
25		#include "curl_setup.h"
26		#include "dynhds.h"
27		#include "strcase.h"
28
29		/* The last 3 #include files should be in this order */
30		#ifdef USE_NGHTTP2
31		#include <stdint.h>
32		#include <nghttp2/nghttp2.h>
33		#endif /* USE_NGHTTP2 */
34		#include "curl_printf.h"
35		#include "curl_memory.h"
36		#include "memdebug.h"
37
38
39		static struct dynhds_entry *
40		entry_new(const char *name, size_t namelen,
41		const char *value, size_t valuelen, int opts)
42	0	{
43	0	struct dynhds_entry *e;
44	0	char *p;
45
46	0	DEBUGASSERT(name);
47	0	DEBUGASSERT(value);
48	0	e = calloc(1, sizeof(*e) + namelen + valuelen + 2);
49	0	if(!e)
50	0	return NULL;
51	0	e->name = p = ((char )e) + sizeof(e);
52	0	memcpy(p, name, namelen);
53	0	e->namelen = namelen;
54	0	e->value = p += namelen + 1; /* leave a \0 at the end of name */
55	0	memcpy(p, value, valuelen);
56	0	e->valuelen = valuelen;
57	0	if(opts & DYNHDS_OPT_LOWERCASE)
58	0	Curl_strntolower(e->name, e->name, e->namelen);
59	0	return e;
60	0	}
61
62		static struct dynhds_entry *
63		entry_append(struct dynhds_entry *e,
64		const char *value, size_t valuelen)
65	0	{
66	0	struct dynhds_entry *e2;
67	0	size_t valuelen2 = e->valuelen + 1 + valuelen;
68	0	char *p;
69
70	0	DEBUGASSERT(value);
71	0	e2 = calloc(1, sizeof(*e) + e->namelen + valuelen2 + 2);
72	0	if(!e2)
73	0	return NULL;
74	0	e2->name = p = ((char )e2) + sizeof(e2);
75	0	memcpy(p, e->name, e->namelen);
76	0	e2->namelen = e->namelen;
77	0	e2->value = p += e->namelen + 1; /* leave a \0 at the end of name */
78	0	memcpy(p, e->value, e->valuelen);
79	0	p += e->valuelen;
80	0	p[0] = ' ';
81	0	memcpy(p + 1, value, valuelen);
82	0	e2->valuelen = valuelen2;
83	0	return e2;
84	0	}
85
86		static void entry_free(struct dynhds_entry *e)
87	0	{
88	0	free(e);
89	0	}
90
91		void Curl_dynhds_init(struct dynhds *dynhds, size_t max_entries,
92		size_t max_strs_size)
93	0	{
94	0	DEBUGASSERT(dynhds);
95	0	DEBUGASSERT(max_strs_size);
96	0	dynhds->hds = NULL;
97	0	dynhds->hds_len = dynhds->hds_allc = dynhds->strs_len = 0;
98	0	dynhds->max_entries = max_entries;
99	0	dynhds->max_strs_size = max_strs_size;
100	0	dynhds->opts = 0;
101	0	}
102
103		void Curl_dynhds_free(struct dynhds *dynhds)
104	0	{
105	0	DEBUGASSERT(dynhds);
106	0	if(dynhds->hds && dynhds->hds_len) {
107	0	size_t i;
108	0	DEBUGASSERT(dynhds->hds);
109	0	for(i = 0; i < dynhds->hds_len; ++i) {
110	0	entry_free(dynhds->hds[i]);
111	0	}
112	0	}
113	0	Curl_safefree(dynhds->hds);
114	0	dynhds->hds_len = dynhds->hds_allc = dynhds->strs_len = 0;
115	0	}
116
117		void Curl_dynhds_reset(struct dynhds *dynhds)
118	0	{
119	0	DEBUGASSERT(dynhds);
120	0	if(dynhds->hds_len) {
121	0	size_t i;
122	0	DEBUGASSERT(dynhds->hds);
123	0	for(i = 0; i < dynhds->hds_len; ++i) {
124	0	entry_free(dynhds->hds[i]);
125	0	dynhds->hds[i] = NULL;
126	0	}
127	0	}
128	0	dynhds->hds_len = dynhds->strs_len = 0;
129	0	}
130
131		size_t Curl_dynhds_count(struct dynhds *dynhds)
132	0	{
133	0	return dynhds->hds_len;
134	0	}
135
136		void Curl_dynhds_set_opts(struct dynhds *dynhds, int opts)
137	0	{
138	0	dynhds->opts = opts;
139	0	}
140
141		struct dynhds_entry Curl_dynhds_getn(struct dynhds dynhds, size_t n)
142	0	{
143	0	DEBUGASSERT(dynhds);
144	0	return (n < dynhds->hds_len)? dynhds->hds[n] : NULL;
145	0	}
146
147		struct dynhds_entry Curl_dynhds_get(struct dynhds dynhds, const char *name,
148		size_t namelen)
149	0	{
150	0	size_t i;
151	0	for(i = 0; i < dynhds->hds_len; ++i) {
152	0	if(dynhds->hds[i]->namelen == namelen &&
153	0	strncasecompare(dynhds->hds[i]->name, name, namelen)) {
154	0	return dynhds->hds[i];
155	0	}
156	0	}
157	0	return NULL;
158	0	}
159
160		struct dynhds_entry Curl_dynhds_cget(struct dynhds dynhds, const char *name)
161	0	{
162	0	return Curl_dynhds_get(dynhds, name, strlen(name));
163	0	}
164
165		CURLcode Curl_dynhds_add(struct dynhds *dynhds,
166		const char *name, size_t namelen,
167		const char *value, size_t valuelen)
168	0	{
169	0	struct dynhds_entry *entry = NULL;
170	0	CURLcode result = CURLE_OUT_OF_MEMORY;
171
172	0	DEBUGASSERT(dynhds);
173	0	if(dynhds->max_entries && dynhds->hds_len >= dynhds->max_entries)
174	0	return CURLE_OUT_OF_MEMORY;
175	0	if(dynhds->strs_len + namelen + valuelen > dynhds->max_strs_size)
176	0	return CURLE_OUT_OF_MEMORY;
177
178	0	entry = entry_new(name, namelen, value, valuelen, dynhds->opts);
179	0	if(!entry)
180	0	goto out;
181
182	0	if(dynhds->hds_len + 1 >= dynhds->hds_allc) {
183	0	size_t nallc = dynhds->hds_len + 16;
184	0	struct dynhds_entry **nhds;
185
186	0	if(dynhds->max_entries && nallc > dynhds->max_entries)
187	0	nallc = dynhds->max_entries;
188
189	0	nhds = calloc(nallc, sizeof(struct dynhds_entry *));
190	0	if(!nhds)
191	0	goto out;
192	0	if(dynhds->hds) {
193	0	memcpy(nhds, dynhds->hds,
194	0	dynhds->hds_len * sizeof(struct dynhds_entry *));
195	0	Curl_safefree(dynhds->hds);
196	0	}
197	0	dynhds->hds = nhds;
198	0	dynhds->hds_allc = nallc;
199	0	}
200	0	dynhds->hds[dynhds->hds_len++] = entry;
201	0	entry = NULL;
202	0	dynhds->strs_len += namelen + valuelen;
203	0	result = CURLE_OK;
204
205	0	out:
206	0	if(entry)
207	0	entry_free(entry);
208	0	return result;
209	0	}
210
211		CURLcode Curl_dynhds_cadd(struct dynhds *dynhds,
212		const char name, const char value)
213	0	{
214	0	return Curl_dynhds_add(dynhds, name, strlen(name), value, strlen(value));
215	0	}
216
217		CURLcode Curl_dynhds_h1_add_line(struct dynhds *dynhds,
218		const char *line, size_t line_len)
219	0	{
220	0	const char *p;
221	0	const char *name;
222	0	size_t namelen;
223	0	const char *value;
224	0	size_t valuelen, i;
225
226	0	if(!line \|\| !line_len)
227	0	return CURLE_OK;
228
229	0	if((line[0] == ' ') \|\| (line[0] == '\t')) {
230	0	struct dynhds_entry e, e2;
231		/* header continuation, yikes! */
232	0	if(!dynhds->hds_len)
233	0	return CURLE_BAD_FUNCTION_ARGUMENT;
234
235	0	while(line_len && ISBLANK(line[0])) {
236	0	++line;
237	0	--line_len;
238	0	}
239	0	if(!line_len)
240	0	return CURLE_BAD_FUNCTION_ARGUMENT;
241	0	e = dynhds->hds[dynhds->hds_len-1];
242	0	e2 = entry_append(e, line, line_len);
243	0	if(!e2)
244	0	return CURLE_OUT_OF_MEMORY;
245	0	dynhds->hds[dynhds->hds_len-1] = e2;
246	0	entry_free(e);
247	0	return CURLE_OK;
248	0	}
249	0	else {
250	0	p = memchr(line, ':', line_len);
251	0	if(!p)
252	0	return CURLE_BAD_FUNCTION_ARGUMENT;
253	0	name = line;
254	0	namelen = p - line;
255	0	p++; /* move past the colon */
256	0	for(i = namelen + 1; i < line_len; ++i, ++p) {
257	0	if(!ISBLANK(*p))
258	0	break;
259	0	}
260	0	value = p;
261	0	valuelen = line_len - i;
262
263	0	p = memchr(value, '\r', valuelen);
264	0	if(!p)
265	0	p = memchr(value, '\n', valuelen);
266	0	if(p)
267	0	valuelen = (size_t)(p - value);
268
269	0	return Curl_dynhds_add(dynhds, name, namelen, value, valuelen);
270	0	}
271	0	}
272
273		CURLcode Curl_dynhds_h1_cadd_line(struct dynhds dynhds, const char line)
274	0	{
275	0	return Curl_dynhds_h1_add_line(dynhds, line, line? strlen(line) : 0);
276	0	}
277
278		#ifdef DEBUGBUILD
279		/* used by unit2602.c */
280
281		bool Curl_dynhds_contains(struct dynhds *dynhds,
282		const char *name, size_t namelen)
283		{
284		return !!Curl_dynhds_get(dynhds, name, namelen);
285		}
286
287		bool Curl_dynhds_ccontains(struct dynhds dynhds, const char name)
288		{
289		return Curl_dynhds_contains(dynhds, name, strlen(name));
290		}
291
292		size_t Curl_dynhds_count_name(struct dynhds *dynhds,
293		const char *name, size_t namelen)
294		{
295		size_t n = 0;
296		if(dynhds->hds_len) {
297		size_t i;
298		for(i = 0; i < dynhds->hds_len; ++i) {
299		if((namelen == dynhds->hds[i]->namelen) &&
300		strncasecompare(name, dynhds->hds[i]->name, namelen))
301		++n;
302		}
303		}
304		return n;
305		}
306
307		size_t Curl_dynhds_ccount_name(struct dynhds dynhds, const char name)
308		{
309		return Curl_dynhds_count_name(dynhds, name, strlen(name));
310		}
311
312		CURLcode Curl_dynhds_set(struct dynhds *dynhds,
313		const char *name, size_t namelen,
314		const char *value, size_t valuelen)
315		{
316		Curl_dynhds_remove(dynhds, name, namelen);
317		return Curl_dynhds_add(dynhds, name, namelen, value, valuelen);
318		}
319
320		size_t Curl_dynhds_remove(struct dynhds *dynhds,
321		const char *name, size_t namelen)
322		{
323		size_t n = 0;
324		if(dynhds->hds_len) {
325		size_t i, len;
326		for(i = 0; i < dynhds->hds_len; ++i) {
327		if((namelen == dynhds->hds[i]->namelen) &&
328		strncasecompare(name, dynhds->hds[i]->name, namelen)) {
329		++n;
330		--dynhds->hds_len;
331		dynhds->strs_len -= (dynhds->hds[i]->namelen +
332		dynhds->hds[i]->valuelen);
333		entry_free(dynhds->hds[i]);
334		len = dynhds->hds_len - i; /* remaining entries */
335		if(len) {
336		memmove(&dynhds->hds[i], &dynhds->hds[i + 1],
337		len * sizeof(dynhds->hds[i]));
338		}
339		--i; /* do this index again */
340		}
341		}
342		}
343		return n;
344		}
345
346		size_t Curl_dynhds_cremove(struct dynhds dynhds, const char name)
347		{
348		return Curl_dynhds_remove(dynhds, name, strlen(name));
349		}
350
351		#endif
352
353		CURLcode Curl_dynhds_h1_dprint(struct dynhds dynhds, struct dynbuf dbuf)
354	0	{
355	0	CURLcode result = CURLE_OK;
356	0	size_t i;
357
358	0	if(!dynhds->hds_len)
359	0	return result;
360
361	0	for(i = 0; i < dynhds->hds_len; ++i) {
362	0	result = Curl_dyn_addf(dbuf, "%.s: %.s\r\n",
363	0	(int)dynhds->hds[i]->namelen, dynhds->hds[i]->name,
364	0	(int)dynhds->hds[i]->valuelen, dynhds->hds[i]->value);
365	0	if(result)
366	0	break;
367	0	}
368
369	0	return result;
370	0	}
371
372		#ifdef USE_NGHTTP2
373
374		nghttp2_nv Curl_dynhds_to_nva(struct dynhds dynhds, size_t *pcount)
375		{
376		nghttp2_nv nva = calloc(1, sizeof(nghttp2_nv) dynhds->hds_len);
377		size_t i;
378
379		*pcount = 0;
380		if(!nva)
381		return NULL;
382
383		for(i = 0; i < dynhds->hds_len; ++i) {
384		struct dynhds_entry *e = dynhds->hds[i];
385		DEBUGASSERT(e);
386		nva[i].name = (unsigned char *)e->name;
387		nva[i].namelen = e->namelen;
388		nva[i].value = (unsigned char *)e->value;
389		nva[i].valuelen = e->valuelen;
390		nva[i].flags = NGHTTP2_NV_FLAG_NONE;
391		}
392		*pcount = dynhds->hds_len;
393		return nva;
394		}
395
396		#endif /* USE_NGHTTP2 */