[337] | 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 - 2017, 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 | #ifndef CURL_DISABLE_FILE
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| 26 |
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| 27 | #ifdef HAVE_NETINET_IN_H
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| 28 | #include <netinet/in.h>
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| 29 | #endif
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| 30 | #ifdef HAVE_NETDB_H
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| 31 | #include <netdb.h>
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| 32 | #endif
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| 33 | #ifdef HAVE_ARPA_INET_H
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| 34 | #include <arpa/inet.h>
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| 35 | #endif
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| 36 | #ifdef HAVE_NET_IF_H
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| 37 | #include <net/if.h>
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| 38 | #endif
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| 39 | #ifdef HAVE_SYS_IOCTL_H
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| 40 | #include <sys/ioctl.h>
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| 41 | #endif
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| 42 |
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| 43 | #ifdef HAVE_SYS_PARAM_H
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| 44 | #include <sys/param.h>
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| 45 | #endif
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| 46 |
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| 47 | #ifdef HAVE_FCNTL_H
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| 48 | #include <fcntl.h>
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| 49 | #endif
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| 50 |
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| 51 | #include "strtoofft.h"
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| 52 | #include "urldata.h"
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| 53 | #include <curl/curl.h>
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| 54 | #include "progress.h"
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| 55 | #include "sendf.h"
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| 56 | #include "escape.h"
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| 57 | #include "file.h"
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| 58 | #include "speedcheck.h"
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| 59 | #include "getinfo.h"
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| 60 | #include "transfer.h"
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| 61 | #include "url.h"
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| 62 | #include "parsedate.h" /* for the week day and month names */
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| 63 | #include "warnless.h"
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| 64 | /* The last 3 #include files should be in this order */
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| 65 | #include "curl_printf.h"
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| 66 | #include "curl_memory.h"
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| 67 | #include "memdebug.h"
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| 68 |
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| 69 | #if defined(WIN32) || defined(MSDOS) || defined(__EMX__) || \
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| 70 | defined(__SYMBIAN32__)
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| 71 | #define DOS_FILESYSTEM 1
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| 72 | #endif
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| 73 |
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| 74 | #ifdef OPEN_NEEDS_ARG3
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| 75 | # define open_readonly(p,f) open((p),(f),(0))
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| 76 | #else
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| 77 | # define open_readonly(p,f) open((p),(f))
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| 78 | #endif
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| 79 |
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| 80 | /*
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| 81 | * Forward declarations.
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| 82 | */
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| 83 |
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| 84 | static CURLcode file_do(struct connectdata *, bool *done);
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| 85 | static CURLcode file_done(struct connectdata *conn,
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| 86 | CURLcode status, bool premature);
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| 87 | static CURLcode file_connect(struct connectdata *conn, bool *done);
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| 88 | static CURLcode file_disconnect(struct connectdata *conn,
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| 89 | bool dead_connection);
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| 90 | static CURLcode file_setup_connection(struct connectdata *conn);
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| 91 |
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| 92 | /*
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| 93 | * FILE scheme handler.
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| 94 | */
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| 95 |
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| 96 | const struct Curl_handler Curl_handler_file = {
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| 97 | "FILE", /* scheme */
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| 98 | file_setup_connection, /* setup_connection */
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| 99 | file_do, /* do_it */
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| 100 | file_done, /* done */
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| 101 | ZERO_NULL, /* do_more */
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| 102 | file_connect, /* connect_it */
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| 103 | ZERO_NULL, /* connecting */
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| 104 | ZERO_NULL, /* doing */
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| 105 | ZERO_NULL, /* proto_getsock */
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| 106 | ZERO_NULL, /* doing_getsock */
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| 107 | ZERO_NULL, /* domore_getsock */
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| 108 | ZERO_NULL, /* perform_getsock */
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| 109 | file_disconnect, /* disconnect */
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| 110 | ZERO_NULL, /* readwrite */
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| 111 | ZERO_NULL, /* connection_check */
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| 112 | 0, /* defport */
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| 113 | CURLPROTO_FILE, /* protocol */
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| 114 | PROTOPT_NONETWORK | PROTOPT_NOURLQUERY /* flags */
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| 115 | };
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| 116 |
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| 117 |
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| 118 | static CURLcode file_setup_connection(struct connectdata *conn)
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| 119 | {
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| 120 | /* allocate the FILE specific struct */
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| 121 | conn->data->req.protop = calloc(1, sizeof(struct FILEPROTO));
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| 122 | if(!conn->data->req.protop)
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| 123 | return CURLE_OUT_OF_MEMORY;
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| 124 |
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| 125 | return CURLE_OK;
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| 126 | }
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| 127 |
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| 128 | /*
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| 129 | Check if this is a range download, and if so, set the internal variables
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| 130 | properly. This code is copied from the FTP implementation and might as
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| 131 | well be factored out.
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| 132 | */
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| 133 | static CURLcode file_range(struct connectdata *conn)
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| 134 | {
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| 135 | curl_off_t from, to;
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| 136 | curl_off_t totalsize = -1;
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| 137 | char *ptr;
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| 138 | char *ptr2;
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| 139 | struct Curl_easy *data = conn->data;
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| 140 |
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| 141 | if(data->state.use_range && data->state.range) {
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| 142 | CURLofft from_t;
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| 143 | CURLofft to_t;
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| 144 | from_t = curlx_strtoofft(data->state.range, &ptr, 0, &from);
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| 145 | if(from_t == CURL_OFFT_FLOW)
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| 146 | return CURLE_RANGE_ERROR;
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| 147 | while(*ptr && (ISSPACE(*ptr) || (*ptr == '-')))
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| 148 | ptr++;
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| 149 | to_t = curlx_strtoofft(ptr, &ptr2, 0, &to);
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| 150 | if(to_t == CURL_OFFT_FLOW)
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| 151 | return CURLE_RANGE_ERROR;
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| 152 | if((to_t == CURL_OFFT_INVAL) && !from_t) {
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| 153 | /* X - */
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| 154 | data->state.resume_from = from;
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| 155 | DEBUGF(infof(data, "RANGE %" CURL_FORMAT_CURL_OFF_T " to end of file\n",
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| 156 | from));
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| 157 | }
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| 158 | else if((from_t == CURL_OFFT_INVAL) && !to_t) {
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| 159 | /* -Y */
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| 160 | data->req.maxdownload = to;
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| 161 | data->state.resume_from = -to;
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| 162 | DEBUGF(infof(data, "RANGE the last %" CURL_FORMAT_CURL_OFF_T " bytes\n",
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| 163 | to));
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| 164 | }
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| 165 | else {
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| 166 | /* X-Y */
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| 167 | totalsize = to-from;
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| 168 | if(totalsize == CURL_OFF_T_MAX)
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| 169 | /* this is too big to increase, so bail out */
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| 170 | return CURLE_RANGE_ERROR;
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| 171 | data->req.maxdownload = totalsize + 1; /* include last byte */
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| 172 | data->state.resume_from = from;
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| 173 | DEBUGF(infof(data, "RANGE from %" CURL_FORMAT_CURL_OFF_T
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| 174 | " getting %" CURL_FORMAT_CURL_OFF_T " bytes\n",
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| 175 | from, data->req.maxdownload));
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| 176 | }
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| 177 | DEBUGF(infof(data, "range-download from %" CURL_FORMAT_CURL_OFF_T
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| 178 | " to %" CURL_FORMAT_CURL_OFF_T ", totally %"
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| 179 | CURL_FORMAT_CURL_OFF_T " bytes\n",
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| 180 | from, to, data->req.maxdownload));
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| 181 | }
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| 182 | else
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| 183 | data->req.maxdownload = -1;
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| 184 | return CURLE_OK;
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| 185 | }
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| 186 |
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| 187 | /*
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| 188 | * file_connect() gets called from Curl_protocol_connect() to allow us to
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| 189 | * do protocol-specific actions at connect-time. We emulate a
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| 190 | * connect-then-transfer protocol and "connect" to the file here
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| 191 | */
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| 192 | static CURLcode file_connect(struct connectdata *conn, bool *done)
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| 193 | {
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| 194 | struct Curl_easy *data = conn->data;
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| 195 | char *real_path;
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| 196 | struct FILEPROTO *file = data->req.protop;
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| 197 | int fd;
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| 198 | #ifdef DOS_FILESYSTEM
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| 199 | size_t i;
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| 200 | char *actual_path;
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| 201 | #endif
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| 202 | size_t real_path_len;
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| 203 |
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| 204 | CURLcode result = Curl_urldecode(data, data->state.path, 0, &real_path,
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| 205 | &real_path_len, FALSE);
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| 206 | if(result)
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| 207 | return result;
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| 208 |
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| 209 | #ifdef DOS_FILESYSTEM
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| 210 | /* If the first character is a slash, and there's
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| 211 | something that looks like a drive at the beginning of
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| 212 | the path, skip the slash. If we remove the initial
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| 213 | slash in all cases, paths without drive letters end up
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| 214 | relative to the current directory which isn't how
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| 215 | browsers work.
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| 216 |
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| 217 | Some browsers accept | instead of : as the drive letter
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| 218 | separator, so we do too.
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| 219 |
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| 220 | On other platforms, we need the slash to indicate an
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| 221 | absolute pathname. On Windows, absolute paths start
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| 222 | with a drive letter.
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| 223 | */
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| 224 | actual_path = real_path;
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| 225 | if((actual_path[0] == '/') &&
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| 226 | actual_path[1] &&
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| 227 | (actual_path[2] == ':' || actual_path[2] == '|')) {
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| 228 | actual_path[2] = ':';
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| 229 | actual_path++;
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| 230 | real_path_len--;
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| 231 | }
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| 232 |
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| 233 | /* change path separators from '/' to '\\' for DOS, Windows and OS/2 */
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| 234 | for(i = 0; i < real_path_len; ++i)
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| 235 | if(actual_path[i] == '/')
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| 236 | actual_path[i] = '\\';
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| 237 | else if(!actual_path[i]) { /* binary zero */
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| 238 | Curl_safefree(real_path);
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| 239 | return CURLE_URL_MALFORMAT;
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| 240 | }
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| 241 |
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| 242 | fd = open_readonly(actual_path, O_RDONLY|O_BINARY);
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| 243 | file->path = actual_path;
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| 244 | #else
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| 245 | if(memchr(real_path, 0, real_path_len)) {
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| 246 | /* binary zeroes indicate foul play */
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| 247 | Curl_safefree(real_path);
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| 248 | return CURLE_URL_MALFORMAT;
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| 249 | }
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| 250 |
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| 251 | fd = open_readonly(real_path, O_RDONLY);
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| 252 | file->path = real_path;
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| 253 | #endif
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| 254 | file->freepath = real_path; /* free this when done */
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| 255 |
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| 256 | file->fd = fd;
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| 257 | if(!data->set.upload && (fd == -1)) {
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| 258 | failf(data, "Couldn't open file %s", data->state.path);
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| 259 | file_done(conn, CURLE_FILE_COULDNT_READ_FILE, FALSE);
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| 260 | return CURLE_FILE_COULDNT_READ_FILE;
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| 261 | }
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| 262 | *done = TRUE;
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| 263 |
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| 264 | return CURLE_OK;
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| 265 | }
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| 266 |
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| 267 | static CURLcode file_done(struct connectdata *conn,
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| 268 | CURLcode status, bool premature)
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| 269 | {
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| 270 | struct FILEPROTO *file = conn->data->req.protop;
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| 271 | (void)status; /* not used */
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| 272 | (void)premature; /* not used */
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| 273 |
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| 274 | if(file) {
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| 275 | Curl_safefree(file->freepath);
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| 276 | file->path = NULL;
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| 277 | if(file->fd != -1)
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| 278 | close(file->fd);
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| 279 | file->fd = -1;
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| 280 | }
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| 281 |
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| 282 | return CURLE_OK;
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| 283 | }
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| 284 |
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| 285 | static CURLcode file_disconnect(struct connectdata *conn,
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| 286 | bool dead_connection)
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| 287 | {
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| 288 | struct FILEPROTO *file = conn->data->req.protop;
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| 289 | (void)dead_connection; /* not used */
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| 290 |
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| 291 | if(file) {
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| 292 | Curl_safefree(file->freepath);
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| 293 | file->path = NULL;
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| 294 | if(file->fd != -1)
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| 295 | close(file->fd);
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| 296 | file->fd = -1;
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| 297 | }
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| 298 |
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| 299 | return CURLE_OK;
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| 300 | }
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| 301 |
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| 302 | #ifdef DOS_FILESYSTEM
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| 303 | #define DIRSEP '\\'
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| 304 | #else
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| 305 | #define DIRSEP '/'
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| 306 | #endif
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| 307 |
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| 308 | static CURLcode file_upload(struct connectdata *conn)
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| 309 | {
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| 310 | struct FILEPROTO *file = conn->data->req.protop;
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| 311 | const char *dir = strchr(file->path, DIRSEP);
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| 312 | int fd;
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| 313 | int mode;
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| 314 | CURLcode result = CURLE_OK;
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| 315 | struct Curl_easy *data = conn->data;
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| 316 | char *buf = data->state.buffer;
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| 317 | size_t nread;
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| 318 | size_t nwrite;
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| 319 | curl_off_t bytecount = 0;
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| 320 | struct_stat file_stat;
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| 321 | const char *buf2;
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| 322 |
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| 323 | /*
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| 324 | * Since FILE: doesn't do the full init, we need to provide some extra
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| 325 | * assignments here.
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| 326 | */
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| 327 | conn->data->req.upload_fromhere = buf;
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| 328 |
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| 329 | if(!dir)
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| 330 | return CURLE_FILE_COULDNT_READ_FILE; /* fix: better error code */
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| 331 |
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| 332 | if(!dir[1])
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| 333 | return CURLE_FILE_COULDNT_READ_FILE; /* fix: better error code */
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| 334 |
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| 335 | #ifdef O_BINARY
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| 336 | #define MODE_DEFAULT O_WRONLY|O_CREAT|O_BINARY
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| 337 | #else
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| 338 | #define MODE_DEFAULT O_WRONLY|O_CREAT
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| 339 | #endif
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| 340 |
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| 341 | if(data->state.resume_from)
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| 342 | mode = MODE_DEFAULT|O_APPEND;
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| 343 | else
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| 344 | mode = MODE_DEFAULT|O_TRUNC;
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| 345 |
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| 346 | fd = open(file->path, mode, conn->data->set.new_file_perms);
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| 347 | if(fd < 0) {
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| 348 | failf(data, "Can't open %s for writing", file->path);
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| 349 | return CURLE_WRITE_ERROR;
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| 350 | }
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| 351 |
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| 352 | if(-1 != data->state.infilesize)
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| 353 | /* known size of data to "upload" */
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| 354 | Curl_pgrsSetUploadSize(data, data->state.infilesize);
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| 355 |
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| 356 | /* treat the negative resume offset value as the case of "-" */
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| 357 | if(data->state.resume_from < 0) {
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| 358 | if(fstat(fd, &file_stat)) {
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| 359 | close(fd);
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| 360 | failf(data, "Can't get the size of %s", file->path);
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| 361 | return CURLE_WRITE_ERROR;
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| 362 | }
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| 363 | data->state.resume_from = (curl_off_t)file_stat.st_size;
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| 364 | }
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| 365 |
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| 366 | while(!result) {
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| 367 | int readcount;
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| 368 | result = Curl_fillreadbuffer(conn, (int)data->set.buffer_size, &readcount);
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| 369 | if(result)
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| 370 | break;
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| 371 |
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| 372 | if(readcount <= 0) /* fix questionable compare error. curlvms */
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| 373 | break;
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| 374 |
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| 375 | nread = (size_t)readcount;
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| 376 |
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| 377 | /*skip bytes before resume point*/
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| 378 | if(data->state.resume_from) {
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| 379 | if((curl_off_t)nread <= data->state.resume_from) {
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| 380 | data->state.resume_from -= nread;
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| 381 | nread = 0;
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| 382 | buf2 = buf;
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| 383 | }
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| 384 | else {
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| 385 | buf2 = buf + data->state.resume_from;
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| 386 | nread -= (size_t)data->state.resume_from;
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| 387 | data->state.resume_from = 0;
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| 388 | }
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| 389 | }
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| 390 | else
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| 391 | buf2 = buf;
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| 392 |
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| 393 | /* write the data to the target */
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| 394 | nwrite = write(fd, buf2, nread);
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| 395 | if(nwrite != nread) {
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| 396 | result = CURLE_SEND_ERROR;
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| 397 | break;
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| 398 | }
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| 399 |
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| 400 | bytecount += nread;
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| 401 |
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| 402 | Curl_pgrsSetUploadCounter(data, bytecount);
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| 403 |
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| 404 | if(Curl_pgrsUpdate(conn))
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| 405 | result = CURLE_ABORTED_BY_CALLBACK;
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| 406 | else
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| 407 | result = Curl_speedcheck(data, Curl_now());
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| 408 | }
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| 409 | if(!result && Curl_pgrsUpdate(conn))
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| 410 | result = CURLE_ABORTED_BY_CALLBACK;
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| 411 |
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| 412 | close(fd);
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| 413 |
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| 414 | return result;
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| 415 | }
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| 416 |
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| 417 | /*
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| 418 | * file_do() is the protocol-specific function for the do-phase, separated
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| 419 | * from the connect-phase above. Other protocols merely setup the transfer in
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| 420 | * the do-phase, to have it done in the main transfer loop but since some
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| 421 | * platforms we support don't allow select()ing etc on file handles (as
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| 422 | * opposed to sockets) we instead perform the whole do-operation in this
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| 423 | * function.
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| 424 | */
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| 425 | static CURLcode file_do(struct connectdata *conn, bool *done)
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| 426 | {
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| 427 | /* This implementation ignores the host name in conformance with
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| 428 | RFC 1738. Only local files (reachable via the standard file system)
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| 429 | are supported. This means that files on remotely mounted directories
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| 430 | (via NFS, Samba, NT sharing) can be accessed through a file:// URL
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| 431 | */
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| 432 | CURLcode result = CURLE_OK;
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| 433 | struct_stat statbuf; /* struct_stat instead of struct stat just to allow the
|
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| 434 | Windows version to have a different struct without
|
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| 435 | having to redefine the simple word 'stat' */
|
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| 436 | curl_off_t expected_size = 0;
|
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| 437 | bool size_known;
|
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| 438 | bool fstated = FALSE;
|
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| 439 | ssize_t nread;
|
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| 440 | struct Curl_easy *data = conn->data;
|
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| 441 | char *buf = data->state.buffer;
|
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| 442 | curl_off_t bytecount = 0;
|
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| 443 | int fd;
|
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| 444 | struct FILEPROTO *file;
|
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| 445 |
|
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| 446 | *done = TRUE; /* unconditionally */
|
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| 447 |
|
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| 448 | Curl_initinfo(data);
|
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| 449 | Curl_pgrsStartNow(data);
|
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| 450 |
|
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| 451 | if(data->set.upload)
|
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| 452 | return file_upload(conn);
|
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| 453 |
|
---|
| 454 | file = conn->data->req.protop;
|
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| 455 |
|
---|
| 456 | /* get the fd from the connection phase */
|
---|
| 457 | fd = file->fd;
|
---|
| 458 |
|
---|
| 459 | /* VMS: This only works reliable for STREAMLF files */
|
---|
| 460 | if(-1 != fstat(fd, &statbuf)) {
|
---|
| 461 | /* we could stat it, then read out the size */
|
---|
| 462 | expected_size = statbuf.st_size;
|
---|
| 463 | /* and store the modification time */
|
---|
| 464 | data->info.filetime = (long)statbuf.st_mtime;
|
---|
| 465 | fstated = TRUE;
|
---|
| 466 | }
|
---|
| 467 |
|
---|
| 468 | if(fstated && !data->state.range && data->set.timecondition) {
|
---|
| 469 | if(!Curl_meets_timecondition(data, (time_t)data->info.filetime)) {
|
---|
| 470 | *done = TRUE;
|
---|
| 471 | return CURLE_OK;
|
---|
| 472 | }
|
---|
| 473 | }
|
---|
| 474 |
|
---|
| 475 | /* If we have selected NOBODY and HEADER, it means that we only want file
|
---|
| 476 | information. Which for FILE can't be much more than the file size and
|
---|
| 477 | date. */
|
---|
| 478 | if(data->set.opt_no_body && data->set.include_header && fstated) {
|
---|
| 479 | time_t filetime;
|
---|
| 480 | struct tm buffer;
|
---|
| 481 | const struct tm *tm = &buffer;
|
---|
| 482 | char header[80];
|
---|
| 483 | snprintf(header, sizeof(header),
|
---|
| 484 | "Content-Length: %" CURL_FORMAT_CURL_OFF_T "\r\n", expected_size);
|
---|
| 485 | result = Curl_client_write(conn, CLIENTWRITE_BOTH, header, 0);
|
---|
| 486 | if(result)
|
---|
| 487 | return result;
|
---|
| 488 |
|
---|
| 489 | result = Curl_client_write(conn, CLIENTWRITE_BOTH,
|
---|
| 490 | (char *)"Accept-ranges: bytes\r\n", 0);
|
---|
| 491 | if(result)
|
---|
| 492 | return result;
|
---|
| 493 |
|
---|
| 494 | filetime = (time_t)statbuf.st_mtime;
|
---|
| 495 | result = Curl_gmtime(filetime, &buffer);
|
---|
| 496 | if(result)
|
---|
| 497 | return result;
|
---|
| 498 |
|
---|
| 499 | /* format: "Tue, 15 Nov 1994 12:45:26 GMT" */
|
---|
| 500 | snprintf(header, sizeof(header),
|
---|
| 501 | "Last-Modified: %s, %02d %s %4d %02d:%02d:%02d GMT\r\n",
|
---|
| 502 | Curl_wkday[tm->tm_wday?tm->tm_wday-1:6],
|
---|
| 503 | tm->tm_mday,
|
---|
| 504 | Curl_month[tm->tm_mon],
|
---|
| 505 | tm->tm_year + 1900,
|
---|
| 506 | tm->tm_hour,
|
---|
| 507 | tm->tm_min,
|
---|
| 508 | tm->tm_sec);
|
---|
| 509 | result = Curl_client_write(conn, CLIENTWRITE_BOTH, header, 0);
|
---|
| 510 | if(!result)
|
---|
| 511 | /* set the file size to make it available post transfer */
|
---|
| 512 | Curl_pgrsSetDownloadSize(data, expected_size);
|
---|
| 513 | return result;
|
---|
| 514 | }
|
---|
| 515 |
|
---|
| 516 | /* Check whether file range has been specified */
|
---|
| 517 | file_range(conn);
|
---|
| 518 |
|
---|
| 519 | /* Adjust the start offset in case we want to get the N last bytes
|
---|
| 520 | * of the stream iff the filesize could be determined */
|
---|
| 521 | if(data->state.resume_from < 0) {
|
---|
| 522 | if(!fstated) {
|
---|
| 523 | failf(data, "Can't get the size of file.");
|
---|
| 524 | return CURLE_READ_ERROR;
|
---|
| 525 | }
|
---|
| 526 | data->state.resume_from += (curl_off_t)statbuf.st_size;
|
---|
| 527 | }
|
---|
| 528 |
|
---|
| 529 | if(data->state.resume_from <= expected_size)
|
---|
| 530 | expected_size -= data->state.resume_from;
|
---|
| 531 | else {
|
---|
| 532 | failf(data, "failed to resume file:// transfer");
|
---|
| 533 | return CURLE_BAD_DOWNLOAD_RESUME;
|
---|
| 534 | }
|
---|
| 535 |
|
---|
| 536 | /* A high water mark has been specified so we obey... */
|
---|
| 537 | if(data->req.maxdownload > 0)
|
---|
| 538 | expected_size = data->req.maxdownload;
|
---|
| 539 |
|
---|
| 540 | if(!fstated || (expected_size == 0))
|
---|
| 541 | size_known = FALSE;
|
---|
| 542 | else
|
---|
| 543 | size_known = TRUE;
|
---|
| 544 |
|
---|
| 545 | /* The following is a shortcut implementation of file reading
|
---|
| 546 | this is both more efficient than the former call to download() and
|
---|
| 547 | it avoids problems with select() and recv() on file descriptors
|
---|
| 548 | in Winsock */
|
---|
| 549 | if(fstated)
|
---|
| 550 | Curl_pgrsSetDownloadSize(data, expected_size);
|
---|
| 551 |
|
---|
| 552 | if(data->state.resume_from) {
|
---|
| 553 | if(data->state.resume_from !=
|
---|
| 554 | lseek(fd, data->state.resume_from, SEEK_SET))
|
---|
| 555 | return CURLE_BAD_DOWNLOAD_RESUME;
|
---|
| 556 | }
|
---|
| 557 |
|
---|
| 558 | Curl_pgrsTime(data, TIMER_STARTTRANSFER);
|
---|
| 559 |
|
---|
| 560 | while(!result) {
|
---|
| 561 | /* Don't fill a whole buffer if we want less than all data */
|
---|
| 562 | size_t bytestoread;
|
---|
| 563 |
|
---|
| 564 | if(size_known) {
|
---|
| 565 | bytestoread = (expected_size < data->set.buffer_size) ?
|
---|
| 566 | curlx_sotouz(expected_size) : (size_t)data->set.buffer_size;
|
---|
| 567 | }
|
---|
| 568 | else
|
---|
| 569 | bytestoread = data->set.buffer_size-1;
|
---|
| 570 |
|
---|
| 571 | nread = read(fd, buf, bytestoread);
|
---|
| 572 |
|
---|
| 573 | if(nread > 0)
|
---|
| 574 | buf[nread] = 0;
|
---|
| 575 |
|
---|
| 576 | if(nread <= 0 || (size_known && (expected_size == 0)))
|
---|
| 577 | break;
|
---|
| 578 |
|
---|
| 579 | bytecount += nread;
|
---|
| 580 | if(size_known)
|
---|
| 581 | expected_size -= nread;
|
---|
| 582 |
|
---|
| 583 | result = Curl_client_write(conn, CLIENTWRITE_BODY, buf, nread);
|
---|
| 584 | if(result)
|
---|
| 585 | return result;
|
---|
| 586 |
|
---|
| 587 | Curl_pgrsSetDownloadCounter(data, bytecount);
|
---|
| 588 |
|
---|
| 589 | if(Curl_pgrsUpdate(conn))
|
---|
| 590 | result = CURLE_ABORTED_BY_CALLBACK;
|
---|
| 591 | else
|
---|
| 592 | result = Curl_speedcheck(data, Curl_now());
|
---|
| 593 | }
|
---|
| 594 | if(Curl_pgrsUpdate(conn))
|
---|
| 595 | result = CURLE_ABORTED_BY_CALLBACK;
|
---|
| 596 |
|
---|
| 597 | return result;
|
---|
| 598 | }
|
---|
| 599 |
|
---|
| 600 | #endif
|
---|