[164] | 1 | /***************************************************************************
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| 2 | * _ _ ____ _
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| 3 | * Project ___| | | | _ \| |
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| 4 | * / __| | | | |_) | |
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| 5 | * | (__| |_| | _ <| |___
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| 6 | * \___|\___/|_| \_\_____|
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| 7 | *
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| 8 | * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
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| 9 | *
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| 10 | * This software is licensed as described in the file COPYING, which
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| 11 | * you should have received as part of this distribution. The terms
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| 12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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| 13 | *
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| 14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 15 | * copies of the Software, and permit persons to whom the Software is
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| 16 | * furnished to do so, under the terms of the COPYING file.
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| 17 | *
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| 18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 19 | * KIND, either express or implied.
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| 20 | *
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| 21 | ***************************************************************************/
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| 22 |
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| 23 | #include "curl_setup.h"
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| 24 |
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| 25 | #include <curl/curl.h>
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| 26 |
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| 27 | #include "urldata.h"
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| 28 | #include "sendf.h"
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| 29 | #include "connect.h"
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| 30 | #include "vtls/vtls.h"
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| 31 | #include "ssh.h"
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| 32 | #include "multiif.h"
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| 33 | #include "non-ascii.h"
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| 34 | #include "curl_printf.h"
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| 35 | #include "strerror.h"
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| 36 |
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| 37 | /* The last #include files should be: */
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| 38 | #include "curl_memory.h"
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| 39 | #include "memdebug.h"
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| 40 |
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| 41 | #ifdef CURL_DO_LINEEND_CONV
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| 42 | /*
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| 43 | * convert_lineends() changes CRLF (\r\n) end-of-line markers to a single LF
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| 44 | * (\n), with special processing for CRLF sequences that are split between two
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| 45 | * blocks of data. Remaining, bare CRs are changed to LFs. The possibly new
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| 46 | * size of the data is returned.
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| 47 | */
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| 48 | static size_t convert_lineends(struct SessionHandle *data,
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| 49 | char *startPtr, size_t size)
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| 50 | {
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| 51 | char *inPtr, *outPtr;
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| 52 |
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| 53 | /* sanity check */
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| 54 | if((startPtr == NULL) || (size < 1)) {
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| 55 | return size;
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| 56 | }
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| 57 |
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| 58 | if(data->state.prev_block_had_trailing_cr) {
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| 59 | /* The previous block of incoming data
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| 60 | had a trailing CR, which was turned into a LF. */
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| 61 | if(*startPtr == '\n') {
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| 62 | /* This block of incoming data starts with the
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| 63 | previous block's LF so get rid of it */
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| 64 | memmove(startPtr, startPtr+1, size-1);
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| 65 | size--;
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| 66 | /* and it wasn't a bare CR but a CRLF conversion instead */
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| 67 | data->state.crlf_conversions++;
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| 68 | }
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| 69 | data->state.prev_block_had_trailing_cr = FALSE; /* reset the flag */
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| 70 | }
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| 71 |
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| 72 | /* find 1st CR, if any */
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| 73 | inPtr = outPtr = memchr(startPtr, '\r', size);
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| 74 | if(inPtr) {
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| 75 | /* at least one CR, now look for CRLF */
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| 76 | while(inPtr < (startPtr+size-1)) {
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| 77 | /* note that it's size-1, so we'll never look past the last byte */
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| 78 | if(memcmp(inPtr, "\r\n", 2) == 0) {
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| 79 | /* CRLF found, bump past the CR and copy the NL */
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| 80 | inPtr++;
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| 81 | *outPtr = *inPtr;
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| 82 | /* keep track of how many CRLFs we converted */
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| 83 | data->state.crlf_conversions++;
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| 84 | }
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| 85 | else {
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| 86 | if(*inPtr == '\r') {
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| 87 | /* lone CR, move LF instead */
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| 88 | *outPtr = '\n';
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| 89 | }
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| 90 | else {
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| 91 | /* not a CRLF nor a CR, just copy whatever it is */
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| 92 | *outPtr = *inPtr;
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| 93 | }
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| 94 | }
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| 95 | outPtr++;
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| 96 | inPtr++;
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| 97 | } /* end of while loop */
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| 98 |
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| 99 | if(inPtr < startPtr+size) {
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| 100 | /* handle last byte */
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| 101 | if(*inPtr == '\r') {
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| 102 | /* deal with a CR at the end of the buffer */
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| 103 | *outPtr = '\n'; /* copy a NL instead */
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| 104 | /* note that a CRLF might be split across two blocks */
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| 105 | data->state.prev_block_had_trailing_cr = TRUE;
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| 106 | }
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| 107 | else {
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| 108 | /* copy last byte */
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| 109 | *outPtr = *inPtr;
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| 110 | }
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| 111 | outPtr++;
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| 112 | }
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| 113 | if(outPtr < startPtr+size)
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| 114 | /* tidy up by null terminating the now shorter data */
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| 115 | *outPtr = '\0';
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| 116 |
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| 117 | return (outPtr - startPtr);
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| 118 | }
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| 119 | return size;
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| 120 | }
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| 121 | #endif /* CURL_DO_LINEEND_CONV */
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| 122 |
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| 123 | /* Curl_infof() is for info message along the way */
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| 124 | #ifndef CURL_DISABLE_VERBOSE_STRINGS
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| 125 | void Curl_infof(struct SessionHandle *data, const char *fmt, ...)
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| 126 | {
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| 127 | if(data && data->set.verbose) {
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| 128 | va_list ap;
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| 129 | size_t len;
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| 130 | char print_buffer[2048 + 1];
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| 131 | va_start(ap, fmt);
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| 132 | vsnprintf(print_buffer, sizeof(print_buffer), fmt, ap);
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| 133 | va_end(ap);
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| 134 | len = strlen(print_buffer);
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| 135 | Curl_debug(data, CURLINFO_TEXT, print_buffer, len, NULL);
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| 136 | }
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| 137 | }
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| 138 | #endif
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| 139 | /* Curl_failf() is for messages stating why we failed.
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| 140 | * The message SHALL NOT include any LF or CR.
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| 141 | */
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| 142 |
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| 143 | void Curl_failf(struct SessionHandle *data, const char *fmt, ...)
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| 144 | {
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| 145 | va_list ap;
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| 146 | size_t len;
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| 147 | va_start(ap, fmt);
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| 148 |
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| 149 | vsnprintf(data->state.buffer, BUFSIZE, fmt, ap);
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| 150 |
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| 151 | if(data->set.errorbuffer && !data->state.errorbuf) {
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| 152 | snprintf(data->set.errorbuffer, CURL_ERROR_SIZE, "%s", data->state.buffer);
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| 153 | data->state.errorbuf = TRUE; /* wrote error string */
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| 154 | }
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| 155 | if(data->set.verbose) {
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| 156 | len = strlen(data->state.buffer);
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| 157 | if(len < BUFSIZE - 1) {
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| 158 | data->state.buffer[len] = '\n';
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| 159 | data->state.buffer[++len] = '\0';
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| 160 | }
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| 161 | Curl_debug(data, CURLINFO_TEXT, data->state.buffer, len, NULL);
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| 162 | }
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| 163 |
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| 164 | va_end(ap);
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| 165 | }
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| 166 |
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| 167 | /* Curl_sendf() sends formated data to the server */
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| 168 | CURLcode Curl_sendf(curl_socket_t sockfd, struct connectdata *conn,
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| 169 | const char *fmt, ...)
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| 170 | {
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| 171 | struct SessionHandle *data = conn->data;
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| 172 | ssize_t bytes_written;
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| 173 | size_t write_len;
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| 174 | CURLcode result = CURLE_OK;
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| 175 | char *s;
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| 176 | char *sptr;
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| 177 | va_list ap;
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| 178 | va_start(ap, fmt);
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| 179 | s = vaprintf(fmt, ap); /* returns an allocated string */
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| 180 | va_end(ap);
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| 181 | if(!s)
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| 182 | return CURLE_OUT_OF_MEMORY; /* failure */
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| 183 |
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| 184 | bytes_written=0;
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| 185 | write_len = strlen(s);
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| 186 | sptr = s;
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| 187 |
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| 188 | for(;;) {
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| 189 | /* Write the buffer to the socket */
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| 190 | result = Curl_write(conn, sockfd, sptr, write_len, &bytes_written);
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| 191 |
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| 192 | if(result)
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| 193 | break;
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| 194 |
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| 195 | if(data->set.verbose)
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| 196 | Curl_debug(data, CURLINFO_DATA_OUT, sptr, (size_t)bytes_written, conn);
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| 197 |
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| 198 | if((size_t)bytes_written != write_len) {
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| 199 | /* if not all was written at once, we must advance the pointer, decrease
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| 200 | the size left and try again! */
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| 201 | write_len -= bytes_written;
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| 202 | sptr += bytes_written;
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| 203 | }
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| 204 | else
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| 205 | break;
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| 206 | }
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| 207 |
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| 208 | free(s); /* free the output string */
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| 209 |
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| 210 | return result;
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| 211 | }
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| 212 |
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| 213 | /*
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| 214 | * Curl_write() is an internal write function that sends data to the
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| 215 | * server. Works with plain sockets, SCP, SSL or kerberos.
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| 216 | *
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| 217 | * If the write would block (CURLE_AGAIN), we return CURLE_OK and
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| 218 | * (*written == 0). Otherwise we return regular CURLcode value.
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| 219 | */
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| 220 | CURLcode Curl_write(struct connectdata *conn,
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| 221 | curl_socket_t sockfd,
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| 222 | const void *mem,
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| 223 | size_t len,
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| 224 | ssize_t *written)
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| 225 | {
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| 226 | ssize_t bytes_written;
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| 227 | CURLcode result = CURLE_OK;
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| 228 | int num = (sockfd == conn->sock[SECONDARYSOCKET]);
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| 229 |
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| 230 | bytes_written = conn->send[num](conn, num, mem, len, &result);
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| 231 |
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| 232 | *written = bytes_written;
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| 233 | if(bytes_written >= 0)
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| 234 | /* we completely ignore the curlcode value when subzero is not returned */
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| 235 | return CURLE_OK;
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| 236 |
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| 237 | /* handle CURLE_AGAIN or a send failure */
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| 238 | switch(result) {
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| 239 | case CURLE_AGAIN:
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| 240 | *written = 0;
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| 241 | return CURLE_OK;
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| 242 |
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| 243 | case CURLE_OK:
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| 244 | /* general send failure */
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| 245 | return CURLE_SEND_ERROR;
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| 246 |
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| 247 | default:
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| 248 | /* we got a specific curlcode, forward it */
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| 249 | return result;
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| 250 | }
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| 251 | }
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| 252 |
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| 253 | ssize_t Curl_send_plain(struct connectdata *conn, int num,
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| 254 | const void *mem, size_t len, CURLcode *code)
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| 255 | {
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| 256 | curl_socket_t sockfd = conn->sock[num];
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| 257 | ssize_t bytes_written = swrite(sockfd, mem, len);
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| 258 |
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| 259 | *code = CURLE_OK;
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| 260 | if(-1 == bytes_written) {
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| 261 | int err = SOCKERRNO;
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| 262 |
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| 263 | if(
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| 264 | #ifdef WSAEWOULDBLOCK
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| 265 | /* This is how Windows does it */
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| 266 | (WSAEWOULDBLOCK == err)
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| 267 | #else
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| 268 | /* errno may be EWOULDBLOCK or on some systems EAGAIN when it returned
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| 269 | due to its inability to send off data without blocking. We therefor
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| 270 | treat both error codes the same here */
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| 271 | (EWOULDBLOCK == err) || (EAGAIN == err) || (EINTR == err)
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| 272 | #endif
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| 273 | ) {
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| 274 | /* this is just a case of EWOULDBLOCK */
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| 275 | bytes_written=0;
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| 276 | *code = CURLE_AGAIN;
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| 277 | }
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| 278 | else {
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| 279 | failf(conn->data, "Send failure: %s",
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| 280 | Curl_strerror(conn, err));
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| 281 | conn->data->state.os_errno = err;
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| 282 | *code = CURLE_SEND_ERROR;
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| 283 | }
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| 284 | }
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| 285 | return bytes_written;
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| 286 | }
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| 287 |
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| 288 | /*
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| 289 | * Curl_write_plain() is an internal write function that sends data to the
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| 290 | * server using plain sockets only. Otherwise meant to have the exact same
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| 291 | * proto as Curl_write()
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| 292 | */
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| 293 | CURLcode Curl_write_plain(struct connectdata *conn,
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| 294 | curl_socket_t sockfd,
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| 295 | const void *mem,
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| 296 | size_t len,
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| 297 | ssize_t *written)
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| 298 | {
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| 299 | ssize_t bytes_written;
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| 300 | CURLcode result;
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| 301 | int num = (sockfd == conn->sock[SECONDARYSOCKET]);
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| 302 |
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| 303 | bytes_written = Curl_send_plain(conn, num, mem, len, &result);
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| 304 |
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| 305 | *written = bytes_written;
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| 306 |
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| 307 | return result;
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| 308 | }
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| 309 |
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| 310 | ssize_t Curl_recv_plain(struct connectdata *conn, int num, char *buf,
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| 311 | size_t len, CURLcode *code)
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| 312 | {
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| 313 | curl_socket_t sockfd = conn->sock[num];
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| 314 | ssize_t nread = sread(sockfd, buf, len);
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| 315 |
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| 316 | *code = CURLE_OK;
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| 317 | if(-1 == nread) {
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| 318 | int err = SOCKERRNO;
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| 319 |
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| 320 | if(
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| 321 | #ifdef WSAEWOULDBLOCK
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| 322 | /* This is how Windows does it */
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| 323 | (WSAEWOULDBLOCK == err)
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| 324 | #else
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| 325 | /* errno may be EWOULDBLOCK or on some systems EAGAIN when it returned
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| 326 | due to its inability to send off data without blocking. We therefor
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| 327 | treat both error codes the same here */
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| 328 | (EWOULDBLOCK == err) || (EAGAIN == err) || (EINTR == err)
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| 329 | #endif
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| 330 | ) {
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| 331 | /* this is just a case of EWOULDBLOCK */
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| 332 | *code = CURLE_AGAIN;
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| 333 | }
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| 334 | else {
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| 335 | failf(conn->data, "Recv failure: %s",
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| 336 | Curl_strerror(conn, err));
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| 337 | conn->data->state.os_errno = err;
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| 338 | *code = CURLE_RECV_ERROR;
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| 339 | }
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| 340 | }
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| 341 | return nread;
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| 342 | }
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| 343 |
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| 344 | static CURLcode pausewrite(struct SessionHandle *data,
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| 345 | int type, /* what type of data */
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| 346 | const char *ptr,
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| 347 | size_t len)
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| 348 | {
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| 349 | /* signalled to pause sending on this connection, but since we have data
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| 350 | we want to send we need to dup it to save a copy for when the sending
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| 351 | is again enabled */
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| 352 | struct SingleRequest *k = &data->req;
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| 353 | char *dupl = malloc(len);
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| 354 | if(!dupl)
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| 355 | return CURLE_OUT_OF_MEMORY;
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| 356 |
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| 357 | memcpy(dupl, ptr, len);
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| 358 |
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| 359 | /* store this information in the state struct for later use */
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| 360 | data->state.tempwrite = dupl;
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| 361 | data->state.tempwritesize = len;
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| 362 | data->state.tempwritetype = type;
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| 363 |
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| 364 | /* mark the connection as RECV paused */
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| 365 | k->keepon |= KEEP_RECV_PAUSE;
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| 366 |
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| 367 | DEBUGF(infof(data, "Pausing with %zu bytes in buffer for type %02x\n",
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| 368 | len, type));
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| 369 |
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| 370 | return CURLE_OK;
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| 371 | }
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| 372 |
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| 373 |
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| 374 | /* Curl_client_chop_write() writes chunks of data not larger than
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| 375 | * CURL_MAX_WRITE_SIZE via client write callback(s) and
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| 376 | * takes care of pause requests from the callbacks.
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| 377 | */
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| 378 | CURLcode Curl_client_chop_write(struct connectdata *conn,
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| 379 | int type,
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| 380 | char * ptr,
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| 381 | size_t len)
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| 382 | {
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| 383 | struct SessionHandle *data = conn->data;
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| 384 | curl_write_callback writeheader = NULL;
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| 385 | curl_write_callback writebody = NULL;
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| 386 |
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| 387 | if(!len)
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| 388 | return CURLE_OK;
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| 389 |
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| 390 | /* If reading is actually paused, we're forced to append this chunk of data
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| 391 | to the already held data, but only if it is the same type as otherwise it
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| 392 | can't work and it'll return error instead. */
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| 393 | if(data->req.keepon & KEEP_RECV_PAUSE) {
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| 394 | size_t newlen;
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| 395 | char *newptr;
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| 396 | if(type != data->state.tempwritetype)
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| 397 | /* major internal confusion */
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| 398 | return CURLE_RECV_ERROR;
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| 399 |
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| 400 | DEBUGASSERT(data->state.tempwrite);
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| 401 |
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| 402 | /* figure out the new size of the data to save */
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| 403 | newlen = len + data->state.tempwritesize;
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| 404 | /* allocate the new memory area */
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| 405 | newptr = realloc(data->state.tempwrite, newlen);
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| 406 | if(!newptr)
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| 407 | return CURLE_OUT_OF_MEMORY;
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| 408 | /* copy the new data to the end of the new area */
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| 409 | memcpy(newptr + data->state.tempwritesize, ptr, len);
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| 410 | /* update the pointer and the size */
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| 411 | data->state.tempwrite = newptr;
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| 412 | data->state.tempwritesize = newlen;
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| 413 | return CURLE_OK;
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| 414 | }
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| 415 |
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| 416 | /* Determine the callback(s) to use. */
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| 417 | if(type & CLIENTWRITE_BODY)
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| 418 | writebody = data->set.fwrite_func;
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| 419 | if((type & CLIENTWRITE_HEADER) &&
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| 420 | (data->set.fwrite_header || data->set.writeheader)) {
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| 421 | /*
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| 422 | * Write headers to the same callback or to the especially setup
|
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| 423 | * header callback function (added after version 7.7.1).
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| 424 | */
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| 425 | writeheader =
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| 426 | data->set.fwrite_header? data->set.fwrite_header: data->set.fwrite_func;
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| 427 | }
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| 428 |
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| 429 | /* Chop data, write chunks. */
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| 430 | while(len) {
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| 431 | size_t chunklen = len <= CURL_MAX_WRITE_SIZE? len: CURL_MAX_WRITE_SIZE;
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| 432 |
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| 433 | if(writebody) {
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| 434 | size_t wrote = writebody(ptr, 1, chunklen, data->set.out);
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| 435 |
|
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| 436 | if(CURL_WRITEFUNC_PAUSE == wrote) {
|
---|
| 437 | if(conn->handler->flags & PROTOPT_NONETWORK) {
|
---|
| 438 | /* Protocols that work without network cannot be paused. This is
|
---|
| 439 | actually only FILE:// just now, and it can't pause since the
|
---|
| 440 | transfer isn't done using the "normal" procedure. */
|
---|
| 441 | failf(data, "Write callback asked for PAUSE when not supported!");
|
---|
| 442 | return CURLE_WRITE_ERROR;
|
---|
| 443 | }
|
---|
| 444 | else
|
---|
| 445 | return pausewrite(data, type, ptr, len);
|
---|
| 446 | }
|
---|
| 447 | else if(wrote != chunklen) {
|
---|
| 448 | failf(data, "Failed writing body (%zu != %zu)", wrote, chunklen);
|
---|
| 449 | return CURLE_WRITE_ERROR;
|
---|
| 450 | }
|
---|
| 451 | }
|
---|
| 452 |
|
---|
| 453 | if(writeheader) {
|
---|
| 454 | size_t wrote = writeheader(ptr, 1, chunklen, data->set.writeheader);
|
---|
| 455 |
|
---|
| 456 | if(CURL_WRITEFUNC_PAUSE == wrote)
|
---|
| 457 | /* here we pass in the HEADER bit only since if this was body as well
|
---|
| 458 | then it was passed already and clearly that didn't trigger the
|
---|
| 459 | pause, so this is saved for later with the HEADER bit only */
|
---|
| 460 | return pausewrite(data, CLIENTWRITE_HEADER, ptr, len);
|
---|
| 461 |
|
---|
| 462 | if(wrote != chunklen) {
|
---|
| 463 | failf (data, "Failed writing header");
|
---|
| 464 | return CURLE_WRITE_ERROR;
|
---|
| 465 | }
|
---|
| 466 | }
|
---|
| 467 |
|
---|
| 468 | ptr += chunklen;
|
---|
| 469 | len -= chunklen;
|
---|
| 470 | }
|
---|
| 471 |
|
---|
| 472 | return CURLE_OK;
|
---|
| 473 | }
|
---|
| 474 |
|
---|
| 475 |
|
---|
| 476 | /* Curl_client_write() sends data to the write callback(s)
|
---|
| 477 |
|
---|
| 478 | The bit pattern defines to what "streams" to write to. Body and/or header.
|
---|
| 479 | The defines are in sendf.h of course.
|
---|
| 480 |
|
---|
| 481 | If CURL_DO_LINEEND_CONV is enabled, data is converted IN PLACE to the
|
---|
| 482 | local character encoding. This is a problem and should be changed in
|
---|
| 483 | the future to leave the original data alone.
|
---|
| 484 | */
|
---|
| 485 | CURLcode Curl_client_write(struct connectdata *conn,
|
---|
| 486 | int type,
|
---|
| 487 | char *ptr,
|
---|
| 488 | size_t len)
|
---|
| 489 | {
|
---|
| 490 | struct SessionHandle *data = conn->data;
|
---|
| 491 |
|
---|
| 492 | if(0 == len)
|
---|
| 493 | len = strlen(ptr);
|
---|
| 494 |
|
---|
| 495 | /* FTP data may need conversion. */
|
---|
| 496 | if((type & CLIENTWRITE_BODY) &&
|
---|
| 497 | (conn->handler->protocol & PROTO_FAMILY_FTP) &&
|
---|
| 498 | conn->proto.ftpc.transfertype == 'A') {
|
---|
| 499 | /* convert from the network encoding */
|
---|
| 500 | CURLcode result = Curl_convert_from_network(data, ptr, len);
|
---|
| 501 | /* Curl_convert_from_network calls failf if unsuccessful */
|
---|
| 502 | if(result)
|
---|
| 503 | return result;
|
---|
| 504 |
|
---|
| 505 | #ifdef CURL_DO_LINEEND_CONV
|
---|
| 506 | /* convert end-of-line markers */
|
---|
| 507 | len = convert_lineends(data, ptr, len);
|
---|
| 508 | #endif /* CURL_DO_LINEEND_CONV */
|
---|
| 509 | }
|
---|
| 510 |
|
---|
| 511 | return Curl_client_chop_write(conn, type, ptr, len);
|
---|
| 512 | }
|
---|
| 513 |
|
---|
| 514 | CURLcode Curl_read_plain(curl_socket_t sockfd,
|
---|
| 515 | char *buf,
|
---|
| 516 | size_t bytesfromsocket,
|
---|
| 517 | ssize_t *n)
|
---|
| 518 | {
|
---|
| 519 | ssize_t nread = sread(sockfd, buf, bytesfromsocket);
|
---|
| 520 |
|
---|
| 521 | if(-1 == nread) {
|
---|
| 522 | int err = SOCKERRNO;
|
---|
| 523 | int return_error;
|
---|
| 524 | #ifdef USE_WINSOCK
|
---|
| 525 | return_error = WSAEWOULDBLOCK == err;
|
---|
| 526 | #else
|
---|
| 527 | return_error = EWOULDBLOCK == err || EAGAIN == err || EINTR == err;
|
---|
| 528 | #endif
|
---|
| 529 | if(return_error)
|
---|
| 530 | return CURLE_AGAIN;
|
---|
| 531 | else
|
---|
| 532 | return CURLE_RECV_ERROR;
|
---|
| 533 | }
|
---|
| 534 |
|
---|
| 535 | /* we only return number of bytes read when we return OK */
|
---|
| 536 | *n = nread;
|
---|
| 537 | return CURLE_OK;
|
---|
| 538 | }
|
---|
| 539 |
|
---|
| 540 | /*
|
---|
| 541 | * Internal read-from-socket function. This is meant to deal with plain
|
---|
| 542 | * sockets, SSL sockets and kerberos sockets.
|
---|
| 543 | *
|
---|
| 544 | * Returns a regular CURLcode value.
|
---|
| 545 | */
|
---|
| 546 | CURLcode Curl_read(struct connectdata *conn, /* connection data */
|
---|
| 547 | curl_socket_t sockfd, /* read from this socket */
|
---|
| 548 | char *buf, /* store read data here */
|
---|
| 549 | size_t sizerequested, /* max amount to read */
|
---|
| 550 | ssize_t *n) /* amount bytes read */
|
---|
| 551 | {
|
---|
| 552 | CURLcode result = CURLE_RECV_ERROR;
|
---|
| 553 | ssize_t nread = 0;
|
---|
| 554 | size_t bytesfromsocket = 0;
|
---|
| 555 | char *buffertofill = NULL;
|
---|
| 556 | bool pipelining = Curl_pipeline_wanted(conn->data->multi, CURLPIPE_HTTP1);
|
---|
| 557 |
|
---|
| 558 | /* Set 'num' to 0 or 1, depending on which socket that has been sent here.
|
---|
| 559 | If it is the second socket, we set num to 1. Otherwise to 0. This lets
|
---|
| 560 | us use the correct ssl handle. */
|
---|
| 561 | int num = (sockfd == conn->sock[SECONDARYSOCKET]);
|
---|
| 562 |
|
---|
| 563 | *n=0; /* reset amount to zero */
|
---|
| 564 |
|
---|
| 565 | /* If session can pipeline, check connection buffer */
|
---|
| 566 | if(pipelining) {
|
---|
| 567 | size_t bytestocopy = CURLMIN(conn->buf_len - conn->read_pos,
|
---|
| 568 | sizerequested);
|
---|
| 569 |
|
---|
| 570 | /* Copy from our master buffer first if we have some unread data there*/
|
---|
| 571 | if(bytestocopy > 0) {
|
---|
| 572 | memcpy(buf, conn->master_buffer + conn->read_pos, bytestocopy);
|
---|
| 573 | conn->read_pos += bytestocopy;
|
---|
| 574 | conn->bits.stream_was_rewound = FALSE;
|
---|
| 575 |
|
---|
| 576 | *n = (ssize_t)bytestocopy;
|
---|
| 577 | return CURLE_OK;
|
---|
| 578 | }
|
---|
| 579 | /* If we come here, it means that there is no data to read from the buffer,
|
---|
| 580 | * so we read from the socket */
|
---|
| 581 | bytesfromsocket = CURLMIN(sizerequested, BUFSIZE * sizeof (char));
|
---|
| 582 | buffertofill = conn->master_buffer;
|
---|
| 583 | }
|
---|
| 584 | else {
|
---|
| 585 | bytesfromsocket = CURLMIN((long)sizerequested,
|
---|
| 586 | conn->data->set.buffer_size ?
|
---|
| 587 | conn->data->set.buffer_size : BUFSIZE);
|
---|
| 588 | buffertofill = buf;
|
---|
| 589 | }
|
---|
| 590 |
|
---|
| 591 | nread = conn->recv[num](conn, num, buffertofill, bytesfromsocket, &result);
|
---|
| 592 | if(nread < 0)
|
---|
| 593 | return result;
|
---|
| 594 |
|
---|
| 595 | if(pipelining) {
|
---|
| 596 | memcpy(buf, conn->master_buffer, nread);
|
---|
| 597 | conn->buf_len = nread;
|
---|
| 598 | conn->read_pos = nread;
|
---|
| 599 | }
|
---|
| 600 |
|
---|
| 601 | *n += nread;
|
---|
| 602 |
|
---|
| 603 | return CURLE_OK;
|
---|
| 604 | }
|
---|
| 605 |
|
---|
| 606 | /* return 0 on success */
|
---|
| 607 | static int showit(struct SessionHandle *data, curl_infotype type,
|
---|
| 608 | char *ptr, size_t size)
|
---|
| 609 | {
|
---|
| 610 | static const char s_infotype[CURLINFO_END][3] = {
|
---|
| 611 | "* ", "< ", "> ", "{ ", "} ", "{ ", "} " };
|
---|
| 612 |
|
---|
| 613 | #ifdef CURL_DOES_CONVERSIONS
|
---|
| 614 | char buf[BUFSIZE+1];
|
---|
| 615 | size_t conv_size = 0;
|
---|
| 616 |
|
---|
| 617 | switch(type) {
|
---|
| 618 | case CURLINFO_HEADER_OUT:
|
---|
| 619 | /* assume output headers are ASCII */
|
---|
| 620 | /* copy the data into my buffer so the original is unchanged */
|
---|
| 621 | if(size > BUFSIZE) {
|
---|
| 622 | size = BUFSIZE; /* truncate if necessary */
|
---|
| 623 | buf[BUFSIZE] = '\0';
|
---|
| 624 | }
|
---|
| 625 | conv_size = size;
|
---|
| 626 | memcpy(buf, ptr, size);
|
---|
| 627 | /* Special processing is needed for this block if it
|
---|
| 628 | * contains both headers and data (separated by CRLFCRLF).
|
---|
| 629 | * We want to convert just the headers, leaving the data as-is.
|
---|
| 630 | */
|
---|
| 631 | if(size > 4) {
|
---|
| 632 | size_t i;
|
---|
| 633 | for(i = 0; i < size-4; i++) {
|
---|
| 634 | if(memcmp(&buf[i], "\x0d\x0a\x0d\x0a", 4) == 0) {
|
---|
| 635 | /* convert everything through this CRLFCRLF but no further */
|
---|
| 636 | conv_size = i + 4;
|
---|
| 637 | break;
|
---|
| 638 | }
|
---|
| 639 | }
|
---|
| 640 | }
|
---|
| 641 |
|
---|
| 642 | Curl_convert_from_network(data, buf, conv_size);
|
---|
| 643 | /* Curl_convert_from_network calls failf if unsuccessful */
|
---|
| 644 | /* we might as well continue even if it fails... */
|
---|
| 645 | ptr = buf; /* switch pointer to use my buffer instead */
|
---|
| 646 | break;
|
---|
| 647 | default:
|
---|
| 648 | /* leave everything else as-is */
|
---|
| 649 | break;
|
---|
| 650 | }
|
---|
| 651 | #endif /* CURL_DOES_CONVERSIONS */
|
---|
| 652 |
|
---|
| 653 | if(data->set.fdebug)
|
---|
| 654 | return (*data->set.fdebug)(data, type, ptr, size,
|
---|
| 655 | data->set.debugdata);
|
---|
| 656 |
|
---|
| 657 | switch(type) {
|
---|
| 658 | case CURLINFO_TEXT:
|
---|
| 659 | case CURLINFO_HEADER_OUT:
|
---|
| 660 | case CURLINFO_HEADER_IN:
|
---|
| 661 | fwrite(s_infotype[type], 2, 1, data->set.err);
|
---|
| 662 | fwrite(ptr, size, 1, data->set.err);
|
---|
| 663 | #ifdef CURL_DOES_CONVERSIONS
|
---|
| 664 | if(size != conv_size) {
|
---|
| 665 | /* we had untranslated data so we need an explicit newline */
|
---|
| 666 | fwrite("\n", 1, 1, data->set.err);
|
---|
| 667 | }
|
---|
| 668 | #endif
|
---|
| 669 | break;
|
---|
| 670 | default: /* nada */
|
---|
| 671 | break;
|
---|
| 672 | }
|
---|
| 673 | return 0;
|
---|
| 674 | }
|
---|
| 675 |
|
---|
| 676 | int Curl_debug(struct SessionHandle *data, curl_infotype type,
|
---|
| 677 | char *ptr, size_t size,
|
---|
| 678 | struct connectdata *conn)
|
---|
| 679 | {
|
---|
| 680 | int rc;
|
---|
| 681 | if(data->set.printhost && conn && conn->host.dispname) {
|
---|
| 682 | char buffer[160];
|
---|
| 683 | const char *t=NULL;
|
---|
| 684 | const char *w="Data";
|
---|
| 685 | switch (type) {
|
---|
| 686 | case CURLINFO_HEADER_IN:
|
---|
| 687 | w = "Header";
|
---|
| 688 | /* FALLTHROUGH */
|
---|
| 689 | case CURLINFO_DATA_IN:
|
---|
| 690 | t = "from";
|
---|
| 691 | break;
|
---|
| 692 | case CURLINFO_HEADER_OUT:
|
---|
| 693 | w = "Header";
|
---|
| 694 | /* FALLTHROUGH */
|
---|
| 695 | case CURLINFO_DATA_OUT:
|
---|
| 696 | t = "to";
|
---|
| 697 | break;
|
---|
| 698 | default:
|
---|
| 699 | break;
|
---|
| 700 | }
|
---|
| 701 |
|
---|
| 702 | if(t) {
|
---|
| 703 | snprintf(buffer, sizeof(buffer), "[%s %s %s]", w, t,
|
---|
| 704 | conn->host.dispname);
|
---|
| 705 | rc = showit(data, CURLINFO_TEXT, buffer, strlen(buffer));
|
---|
| 706 | if(rc)
|
---|
| 707 | return rc;
|
---|
| 708 | }
|
---|
| 709 | }
|
---|
| 710 | rc = showit(data, type, ptr, size);
|
---|
| 711 | return rc;
|
---|
| 712 | }
|
---|