1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
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 http://curl.haxx.se/docs/copyright.html.
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.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ***************************************************************************/
22 #include "tool_setup.h"
26 #define ENABLE_CURLX_PRINTF
27 /* use our own printf() functions */
30 #include "tool_cfgable.h"
31 #include "tool_msgs.h"
32 #include "tool_cb_hdr.h"
34 #include "memdebug.h" /* keep this as LAST include */
36 static char *parse_filename(const char *ptr, size_t len);
39 ** callback for CURLOPT_HEADERFUNCTION
42 size_t tool_header_cb(void *ptr, size_t size, size_t nmemb, void *userdata)
44 struct HdrCbData *hdrcbdata = userdata;
45 struct OutStruct *outs = hdrcbdata->outs;
46 struct OutStruct *heads = hdrcbdata->heads;
47 const char *str = ptr;
48 const size_t cb = size * nmemb;
49 const char *end = (char*)ptr + cb;
52 * Once that libcurl has called back tool_header_cb() the returned value
53 * is checked against the amount that was intended to be written, if
54 * it does not match then it fails with CURLE_WRITE_ERROR. So at this
55 * point returning a value different from sz*nmemb indicates failure.
57 size_t failure = (size * nmemb) ? 0 : 1;
63 if(size * nmemb > (size_t)CURL_MAX_HTTP_HEADER) {
64 warnf(heads->config, "Header data exceeds single call write limit!\n");
70 * Write header data when curl option --dump-header (-D) is given.
73 if(heads->config->headerfile && heads->stream) {
74 size_t rc = fwrite(ptr, size, nmemb, heads->stream);
80 * This callback sets the filename where output shall be written when
81 * curl options --remote-name (-O) and --remote-header-name (-J) have
82 * been simultaneously given and additionally server returns an HTTP
83 * Content-Disposition header specifying a filename property.
86 if(hdrcbdata->honor_cd_filename &&
87 (cb > 20) && checkprefix("Content-disposition:", str)) {
88 const char *p = str + 20;
90 /* look for the 'filename=' parameter
91 (encoded filenames (*=) are not supported) */
96 while(*p && (p < end) && !ISALPHA(*p))
101 if(memcmp(p, "filename=", 9)) {
102 /* no match, find next parameter */
103 while((p < end) && (*p != ';'))
109 /* this expression below typecasts 'cb' only to avoid
110 warning: signed and unsigned type in conditional expression
112 len = (ssize_t)cb - (p - str);
113 filename = parse_filename(p, len);
115 outs->filename = filename;
116 outs->alloc_filename = TRUE;
117 outs->is_cd_filename = TRUE;
118 outs->s_isreg = TRUE;
119 outs->fopened = FALSE;
121 hdrcbdata->honor_cd_filename = FALSE;
133 * Copies a file name part and returns an ALLOCATED data buffer.
135 static char *parse_filename(const char *ptr, size_t len)
142 /* simple implementation of strndup() */
143 copy = malloc(len+1);
146 memcpy(copy, ptr, len);
150 if(*p == '\'' || *p == '"') {
151 /* store the starting quote */
158 /* if the filename contains a path, only use filename portion */
159 q = strrchr(copy, '/');
168 /* If the filename contains a backslash, only use filename portion. The idea
169 is that even systems that don't handle backslashes as path separators
170 probably want the path removed for convenience. */
171 q = strrchr(p, '\\');
180 /* scan for the end letter and stop there */
183 if(q[1] && (q[0] == '\\'))
185 else if(q[0] == stop)
191 /* make sure the file name doesn't end in \r or \n */
201 memmove(copy, p, strlen(p) + 1);
203 /* in case we built debug enabled, we allow an evironment variable
204 * named CURL_TESTDIR to prefix the given file name to put it into a
209 char *tdir = curlx_getenv("CURL_TESTDIR");
211 char buffer[512]; /* suitably large */
212 snprintf(buffer, sizeof(buffer), "%s/%s", tdir, copy);
214 copy = strdup(buffer); /* clone the buffer, we don't use the libcurl
215 aprintf() or similar since we want to use the
216 same memory code as the "real" parse_filename