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 | #include <curl/curl.h>
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26 |
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27 | #include "mime.h"
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28 | #include "non-ascii.h"
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29 | #include "urldata.h"
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30 | #include "sendf.h"
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31 |
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32 | #if !defined(CURL_DISABLE_HTTP) || !defined(CURL_DISABLE_SMTP) || \
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33 | !defined(CURL_DISABLE_IMAP)
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34 |
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35 | #if defined(HAVE_LIBGEN_H) && defined(HAVE_BASENAME)
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36 | #include <libgen.h>
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37 | #endif
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38 |
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39 | #include "rand.h"
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40 | #include "slist.h"
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41 | #include "strcase.h"
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42 | /* The last 3 #include files should be in this order */
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43 | #include "curl_printf.h"
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44 | #include "curl_memory.h"
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45 | #include "memdebug.h"
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46 |
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47 | #ifdef WIN32
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48 | # ifndef R_OK
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49 | # define R_OK 4
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50 | # endif
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51 | #endif
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52 |
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53 |
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54 | #define FILE_CONTENTTYPE_DEFAULT "application/octet-stream"
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55 | #define MULTIPART_CONTENTTYPE_DEFAULT "multipart/mixed"
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56 | #define DISPOSITION_DEFAULT "attachment"
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57 |
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58 | #define READ_ERROR ((size_t) -1)
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59 |
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60 | /* Encoders. */
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61 | static size_t encoder_nop_read(char *buffer, size_t size, bool ateof,
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62 | curl_mimepart *part);
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63 | static curl_off_t encoder_nop_size(curl_mimepart *part);
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64 | static size_t encoder_7bit_read(char *buffer, size_t size, bool ateof,
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65 | curl_mimepart *part);
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66 | static size_t encoder_base64_read(char *buffer, size_t size, bool ateof,
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67 | curl_mimepart *part);
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68 | static curl_off_t encoder_base64_size(curl_mimepart *part);
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69 | static size_t encoder_qp_read(char *buffer, size_t size, bool ateof,
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70 | curl_mimepart *part);
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71 | static curl_off_t encoder_qp_size(curl_mimepart *part);
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72 |
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73 | static const mime_encoder encoders[] = {
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74 | {"binary", encoder_nop_read, encoder_nop_size},
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75 | {"8bit", encoder_nop_read, encoder_nop_size},
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76 | {"7bit", encoder_7bit_read, encoder_nop_size},
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77 | {"base64", encoder_base64_read, encoder_base64_size},
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78 | {"quoted-printable", encoder_qp_read, encoder_qp_size},
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79 | {ZERO_NULL, ZERO_NULL, ZERO_NULL}
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80 | };
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81 |
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82 | /* Base64 encoding table */
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83 | static const char base64[] =
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84 | "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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85 |
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86 | /* Quoted-printable character class table.
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87 | *
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88 | * We cannot rely on ctype functions since quoted-printable input data
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89 | * is assumed to be ascii-compatible, even on non-ascii platforms. */
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90 | #define QP_OK 1 /* Can be represented by itself. */
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91 | #define QP_SP 2 /* Space or tab. */
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92 | #define QP_CR 3 /* Carriage return. */
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93 | #define QP_LF 4 /* Line-feed. */
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94 | static const unsigned char qp_class[] = {
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95 | 0, 0, 0, 0, 0, 0, 0, 0, /* 00 - 07 */
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96 | 0, QP_SP, QP_LF, 0, 0, QP_CR, 0, 0, /* 08 - 0F */
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97 | 0, 0, 0, 0, 0, 0, 0, 0, /* 10 - 17 */
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98 | 0, 0, 0, 0, 0, 0, 0, 0, /* 18 - 1F */
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99 | QP_SP, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, /* 20 - 27 */
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100 | QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, /* 28 - 2F */
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101 | QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, /* 30 - 37 */
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102 | QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, 0 , QP_OK, QP_OK, /* 38 - 3F */
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103 | QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, /* 40 - 47 */
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104 | QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, /* 48 - 4F */
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105 | QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, /* 50 - 57 */
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106 | QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, /* 58 - 5F */
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107 | QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, /* 60 - 67 */
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108 | QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, /* 68 - 6F */
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109 | QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, /* 70 - 77 */
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110 | QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, 0, /* 78 - 7F */
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111 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 80 - 8F */
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112 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 90 - 9F */
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113 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* A0 - AF */
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114 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* B0 - BF */
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115 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* C0 - CF */
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116 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* D0 - DF */
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117 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* E0 - EF */
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118 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* F0 - FF */
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119 | };
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120 |
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121 |
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122 | /* Binary --> hexadecimal ASCII table. */
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123 | static const char aschex[] =
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124 | "\x30\x31\x32\x33\x34\x35\x36\x37\x38\x39\x41\x42\x43\x44\x45\x46";
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125 |
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126 |
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127 |
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128 | #ifndef __VMS
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129 | #define filesize(name, stat_data) (stat_data.st_size)
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130 | #define fopen_read fopen
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131 |
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132 | #else
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133 |
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134 | #include <fabdef.h>
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135 | /*
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136 | * get_vms_file_size does what it takes to get the real size of the file
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137 | *
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138 | * For fixed files, find out the size of the EOF block and adjust.
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139 | *
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140 | * For all others, have to read the entire file in, discarding the contents.
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141 | * Most posted text files will be small, and binary files like zlib archives
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142 | * and CD/DVD images should be either a STREAM_LF format or a fixed format.
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143 | *
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144 | */
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145 | curl_off_t VmsRealFileSize(const char *name,
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146 | const struct_stat *stat_buf)
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147 | {
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148 | char buffer[8192];
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149 | curl_off_t count;
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150 | int ret_stat;
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151 | FILE * file;
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152 |
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153 | file = fopen(name, FOPEN_READTEXT); /* VMS */
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154 | if(file == NULL)
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155 | return 0;
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156 |
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157 | count = 0;
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158 | ret_stat = 1;
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159 | while(ret_stat > 0) {
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160 | ret_stat = fread(buffer, 1, sizeof(buffer), file);
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161 | if(ret_stat != 0)
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162 | count += ret_stat;
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163 | }
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164 | fclose(file);
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165 |
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166 | return count;
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167 | }
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168 |
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169 | /*
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170 | *
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171 | * VmsSpecialSize checks to see if the stat st_size can be trusted and
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172 | * if not to call a routine to get the correct size.
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173 | *
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174 | */
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175 | static curl_off_t VmsSpecialSize(const char *name,
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176 | const struct_stat *stat_buf)
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177 | {
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178 | switch(stat_buf->st_fab_rfm) {
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179 | case FAB$C_VAR:
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180 | case FAB$C_VFC:
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181 | return VmsRealFileSize(name, stat_buf);
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182 | break;
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183 | default:
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184 | return stat_buf->st_size;
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185 | }
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186 | }
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187 |
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188 | #define filesize(name, stat_data) VmsSpecialSize(name, &stat_data)
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189 |
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190 | /*
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191 | * vmsfopenread
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192 | *
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193 | * For upload to work as expected on VMS, different optional
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194 | * parameters must be added to the fopen command based on
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195 | * record format of the file.
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196 | *
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197 | */
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198 | static FILE * vmsfopenread(const char *file, const char *mode)
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199 | {
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200 | struct_stat statbuf;
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201 | int result;
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202 |
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203 | result = stat(file, &statbuf);
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204 |
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205 | switch(statbuf.st_fab_rfm) {
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206 | case FAB$C_VAR:
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207 | case FAB$C_VFC:
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208 | case FAB$C_STMCR:
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209 | return fopen(file, FOPEN_READTEXT); /* VMS */
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210 | break;
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211 | default:
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212 | return fopen(file, FOPEN_READTEXT, "rfm=stmlf", "ctx=stm");
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213 | }
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214 | }
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215 |
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216 | #define fopen_read vmsfopenread
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217 | #endif
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218 |
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219 |
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220 | #ifndef HAVE_BASENAME
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221 | /*
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222 | (Quote from The Open Group Base Specifications Issue 6 IEEE Std 1003.1, 2004
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223 | Edition)
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224 |
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225 | The basename() function shall take the pathname pointed to by path and
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226 | return a pointer to the final component of the pathname, deleting any
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227 | trailing '/' characters.
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228 |
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229 | If the string pointed to by path consists entirely of the '/' character,
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230 | basename() shall return a pointer to the string "/". If the string pointed
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231 | to by path is exactly "//", it is implementation-defined whether '/' or "//"
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232 | is returned.
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233 |
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234 | If path is a null pointer or points to an empty string, basename() shall
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235 | return a pointer to the string ".".
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236 |
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237 | The basename() function may modify the string pointed to by path, and may
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238 | return a pointer to static storage that may then be overwritten by a
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239 | subsequent call to basename().
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240 |
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241 | The basename() function need not be reentrant. A function that is not
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242 | required to be reentrant is not required to be thread-safe.
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243 |
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244 | */
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245 | static char *Curl_basename(char *path)
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246 | {
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247 | /* Ignore all the details above for now and make a quick and simple
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248 | implementaion here */
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249 | char *s1;
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250 | char *s2;
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251 |
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252 | s1 = strrchr(path, '/');
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253 | s2 = strrchr(path, '\\');
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254 |
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255 | if(s1 && s2) {
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256 | path = (s1 > s2? s1 : s2) + 1;
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257 | }
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258 | else if(s1)
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259 | path = s1 + 1;
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260 | else if(s2)
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261 | path = s2 + 1;
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262 |
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263 | return path;
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264 | }
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265 |
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266 | #define basename(x) Curl_basename((x))
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267 | #endif
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268 |
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269 |
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270 | /* Set readback state. */
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271 | static void mimesetstate(mime_state *state, enum mimestate tok, void *ptr)
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272 | {
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273 | state->state = tok;
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274 | state->ptr = ptr;
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275 | state->offset = 0;
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276 | }
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277 |
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278 |
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279 | /* Escape header string into allocated memory. */
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280 | static char *escape_string(const char *src)
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281 | {
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282 | size_t bytecount = 0;
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283 | size_t i;
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284 | char *dst;
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285 |
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286 | for(i = 0; src[i]; i++)
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287 | if(src[i] == '"' || src[i] == '\\')
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288 | bytecount++;
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289 |
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290 | bytecount += i;
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291 | dst = malloc(bytecount + 1);
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292 | if(!dst)
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293 | return NULL;
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294 |
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295 | for(i = 0; *src; src++) {
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296 | if(*src == '"' || *src == '\\')
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297 | dst[i++] = '\\';
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298 | dst[i++] = *src;
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299 | }
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300 |
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301 | dst[i] = '\0';
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302 | return dst;
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303 | }
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304 |
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305 | /* Check if header matches. */
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306 | static char *match_header(struct curl_slist *hdr, const char *lbl, size_t len)
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307 | {
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308 | char *value = NULL;
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309 |
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310 | if(strncasecompare(hdr->data, lbl, len) && hdr->data[len] == ':')
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311 | for(value = hdr->data + len + 1; *value == ' '; value++)
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312 | ;
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313 | return value;
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314 | }
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315 |
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316 | /* Get a header from an slist. */
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317 | static char *search_header(struct curl_slist *hdrlist, const char *hdr)
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318 | {
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319 | size_t len = strlen(hdr);
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320 | char *value = NULL;
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321 |
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322 | for(; !value && hdrlist; hdrlist = hdrlist->next)
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323 | value = match_header(hdrlist, hdr, len);
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324 |
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325 | return value;
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326 | }
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327 |
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328 | static char *strippath(const char *fullfile)
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329 | {
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330 | char *filename;
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331 | char *base;
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332 | filename = strdup(fullfile); /* duplicate since basename() may ruin the
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333 | buffer it works on */
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334 | if(!filename)
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335 | return NULL;
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336 | base = strdup(basename(filename));
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337 |
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338 | free(filename); /* free temporary buffer */
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339 |
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340 | return base; /* returns an allocated string or NULL ! */
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341 | }
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342 |
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343 | /* Initialize data encoder state. */
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344 | static void cleanup_encoder_state(mime_encoder_state *p)
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345 | {
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346 | p->pos = 0;
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347 | p->bufbeg = 0;
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348 | p->bufend = 0;
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349 | }
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350 |
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351 |
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352 | /* Dummy encoder. This is used for 8bit and binary content encodings. */
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353 | static size_t encoder_nop_read(char *buffer, size_t size, bool ateof,
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354 | curl_mimepart *part)
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355 | {
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356 | mime_encoder_state *st = &part->encstate;
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357 | size_t insize = st->bufend - st->bufbeg;
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358 |
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359 | (void) ateof;
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360 |
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361 | if(size > insize)
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362 | size = insize;
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363 | if(size)
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364 | memcpy(buffer, st->buf, size);
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365 | st->bufbeg += size;
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366 | return size;
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367 | }
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368 |
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369 | static curl_off_t encoder_nop_size(curl_mimepart *part)
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370 | {
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371 | return part->datasize;
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372 | }
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373 |
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374 |
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375 | /* 7bit encoder: the encoder is just a data validity check. */
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376 | static size_t encoder_7bit_read(char *buffer, size_t size, bool ateof,
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377 | curl_mimepart *part)
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378 | {
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379 | mime_encoder_state *st = &part->encstate;
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380 | size_t cursize = st->bufend - st->bufbeg;
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381 |
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382 | (void) ateof;
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383 |
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384 | if(size > cursize)
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385 | size = cursize;
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386 |
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387 | for(cursize = 0; cursize < size; cursize++) {
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388 | *buffer = st->buf[st->bufbeg];
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389 | if(*buffer++ & 0x80)
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390 | return cursize? cursize: READ_ERROR;
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391 | st->bufbeg++;
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392 | }
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393 |
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394 | return cursize;
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395 | }
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396 |
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397 |
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398 | /* Base64 content encoder. */
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399 | static size_t encoder_base64_read(char *buffer, size_t size, bool ateof,
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400 | curl_mimepart *part)
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401 | {
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402 | mime_encoder_state *st = &part->encstate;
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403 | size_t cursize = 0;
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404 | int i;
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405 | char *ptr = buffer;
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406 |
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407 | while(st->bufbeg < st->bufend) {
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408 | /* Line full ? */
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409 | if(st->pos > MAX_ENCODED_LINE_LENGTH - 4) {
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410 | /* Yes, we need 2 characters for CRLF. */
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411 | if(size < 2)
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412 | break;
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413 | *ptr++ = '\r';
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414 | *ptr++ = '\n';
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415 | st->pos = 0;
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416 | cursize += 2;
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417 | size -= 2;
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418 | }
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419 |
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420 | /* Be sure there is enough space and input data for a base64 group. */
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421 | if(size < 4 || st->bufend - st->bufbeg < 3)
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422 | break;
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423 |
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424 | /* Encode three bytes as four characters. */
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425 | i = st->buf[st->bufbeg++] & 0xFF;
|
---|
426 | i = (i << 8) | (st->buf[st->bufbeg++] & 0xFF);
|
---|
427 | i = (i << 8) | (st->buf[st->bufbeg++] & 0xFF);
|
---|
428 | *ptr++ = base64[(i >> 18) & 0x3F];
|
---|
429 | *ptr++ = base64[(i >> 12) & 0x3F];
|
---|
430 | *ptr++ = base64[(i >> 6) & 0x3F];
|
---|
431 | *ptr++ = base64[i & 0x3F];
|
---|
432 | cursize += 4;
|
---|
433 | st->pos += 4;
|
---|
434 | size -= 4;
|
---|
435 | }
|
---|
436 |
|
---|
437 | /* If at eof, we have to flush the buffered data. */
|
---|
438 | if(ateof && size >= 4) {
|
---|
439 | /* Buffered data size can only be 0, 1 or 2. */
|
---|
440 | ptr[2] = ptr[3] = '=';
|
---|
441 | i = 0;
|
---|
442 | switch(st->bufend - st->bufbeg) {
|
---|
443 | case 2:
|
---|
444 | i = (st->buf[st->bufbeg + 1] & 0xFF) << 8;
|
---|
445 | /* FALLTHROUGH */
|
---|
446 | case 1:
|
---|
447 | i |= (st->buf[st->bufbeg] & 0xFF) << 16;
|
---|
448 | ptr[0] = base64[(i >> 18) & 0x3F];
|
---|
449 | ptr[1] = base64[(i >> 12) & 0x3F];
|
---|
450 | if(++st->bufbeg != st->bufend) {
|
---|
451 | ptr[2] = base64[(i >> 6) & 0x3F];
|
---|
452 | st->bufbeg++;
|
---|
453 | }
|
---|
454 | cursize += 4;
|
---|
455 | st->pos += 4;
|
---|
456 | break;
|
---|
457 | }
|
---|
458 | }
|
---|
459 |
|
---|
460 | #ifdef CURL_DOES_CONVERSIONS
|
---|
461 | /* This is now textual data, Convert character codes. */
|
---|
462 | if(part->easy && cursize) {
|
---|
463 | CURLcode result = Curl_convert_to_network(part->easy, buffer, cursize);
|
---|
464 | if(result)
|
---|
465 | return READ_ERROR;
|
---|
466 | }
|
---|
467 | #endif
|
---|
468 |
|
---|
469 | return cursize;
|
---|
470 | }
|
---|
471 |
|
---|
472 | static curl_off_t encoder_base64_size(curl_mimepart *part)
|
---|
473 | {
|
---|
474 | curl_off_t size = part->datasize;
|
---|
475 |
|
---|
476 | if(size <= 0)
|
---|
477 | return size; /* Unknown size or no data. */
|
---|
478 |
|
---|
479 | /* Compute base64 character count. */
|
---|
480 | size = 4 * (1 + (size - 1) / 3);
|
---|
481 |
|
---|
482 | /* Effective character count must include CRLFs. */
|
---|
483 | return size + 2 * ((size - 1) / MAX_ENCODED_LINE_LENGTH);
|
---|
484 | }
|
---|
485 |
|
---|
486 |
|
---|
487 | /* Quoted-printable lookahead.
|
---|
488 | *
|
---|
489 | * Check if a CRLF or end of data is in input buffer at current position + n.
|
---|
490 | * Return -1 if more data needed, 1 if CRLF or end of data, else 0.
|
---|
491 | */
|
---|
492 | static int qp_lookahead_eol(mime_encoder_state *st, int ateof, size_t n)
|
---|
493 | {
|
---|
494 | n += st->bufbeg;
|
---|
495 | if(n >= st->bufend && ateof)
|
---|
496 | return 1;
|
---|
497 | if(n + 2 > st->bufend)
|
---|
498 | return ateof? 0: -1;
|
---|
499 | if(qp_class[st->buf[n] & 0xFF] == QP_CR &&
|
---|
500 | qp_class[st->buf[n + 1] & 0xFF] == QP_LF)
|
---|
501 | return 1;
|
---|
502 | return 0;
|
---|
503 | }
|
---|
504 |
|
---|
505 | /* Quoted-printable encoder. */
|
---|
506 | static size_t encoder_qp_read(char *buffer, size_t size, bool ateof,
|
---|
507 | curl_mimepart *part)
|
---|
508 | {
|
---|
509 | mime_encoder_state *st = &part->encstate;
|
---|
510 | char *ptr = buffer;
|
---|
511 | size_t cursize = 0;
|
---|
512 | int i;
|
---|
513 | size_t len;
|
---|
514 | size_t consumed;
|
---|
515 | int softlinebreak;
|
---|
516 | char buf[4];
|
---|
517 |
|
---|
518 | /* On all platforms, input is supposed to be ASCII compatible: for this
|
---|
519 | reason, we use hexadecimal ASCII codes in this function rather than
|
---|
520 | character constants that can be interpreted as non-ascii on some
|
---|
521 | platforms. Preserve ASCII encoding on output too. */
|
---|
522 | while(st->bufbeg < st->bufend) {
|
---|
523 | len = 1;
|
---|
524 | consumed = 1;
|
---|
525 | i = st->buf[st->bufbeg];
|
---|
526 | buf[0] = (char) i;
|
---|
527 | buf[1] = aschex[(i >> 4) & 0xF];
|
---|
528 | buf[2] = aschex[i & 0xF];
|
---|
529 |
|
---|
530 | switch(qp_class[st->buf[st->bufbeg] & 0xFF]) {
|
---|
531 | case QP_OK: /* Not a special character. */
|
---|
532 | break;
|
---|
533 | case QP_SP: /* Space or tab. */
|
---|
534 | /* Spacing must be escaped if followed by CRLF. */
|
---|
535 | switch(qp_lookahead_eol(st, ateof, 1)) {
|
---|
536 | case -1: /* More input data needed. */
|
---|
537 | return cursize;
|
---|
538 | case 0: /* No encoding needed. */
|
---|
539 | break;
|
---|
540 | default: /* CRLF after space or tab. */
|
---|
541 | buf[0] = '\x3D'; /* '=' */
|
---|
542 | len = 3;
|
---|
543 | break;
|
---|
544 | }
|
---|
545 | break;
|
---|
546 | case QP_CR: /* Carriage return. */
|
---|
547 | /* If followed by a line-feed, output the CRLF pair.
|
---|
548 | Else escape it. */
|
---|
549 | switch(qp_lookahead_eol(st, ateof, 0)) {
|
---|
550 | case -1: /* Need more data. */
|
---|
551 | return cursize;
|
---|
552 | case 1: /* CRLF found. */
|
---|
553 | buf[len++] = '\x0A'; /* Append '\n'. */
|
---|
554 | consumed = 2;
|
---|
555 | break;
|
---|
556 | default: /* Not followed by LF: escape. */
|
---|
557 | buf[0] = '\x3D'; /* '=' */
|
---|
558 | len = 3;
|
---|
559 | break;
|
---|
560 | }
|
---|
561 | break;
|
---|
562 | default: /* Character must be escaped. */
|
---|
563 | buf[0] = '\x3D'; /* '=' */
|
---|
564 | len = 3;
|
---|
565 | break;
|
---|
566 | }
|
---|
567 |
|
---|
568 | /* Be sure the encoded character fits within maximum line length. */
|
---|
569 | if(buf[len - 1] != '\x0A') { /* '\n' */
|
---|
570 | softlinebreak = st->pos + len > MAX_ENCODED_LINE_LENGTH;
|
---|
571 | if(!softlinebreak && st->pos + len == MAX_ENCODED_LINE_LENGTH) {
|
---|
572 | /* We may use the current line only if end of data or followed by
|
---|
573 | a CRLF. */
|
---|
574 | switch(qp_lookahead_eol(st, ateof, consumed)) {
|
---|
575 | case -1: /* Need more data. */
|
---|
576 | return cursize;
|
---|
577 | break;
|
---|
578 | case 0: /* Not followed by a CRLF. */
|
---|
579 | softlinebreak = 1;
|
---|
580 | break;
|
---|
581 | }
|
---|
582 | }
|
---|
583 | if(softlinebreak) {
|
---|
584 | strcpy(buf, "\x3D\x0D\x0A"); /* "=\r\n" */
|
---|
585 | len = 3;
|
---|
586 | consumed = 0;
|
---|
587 | }
|
---|
588 | }
|
---|
589 |
|
---|
590 | /* If the output buffer would overflow, do not store. */
|
---|
591 | if(len > size)
|
---|
592 | break;
|
---|
593 |
|
---|
594 | /* Append to output buffer. */
|
---|
595 | memcpy(ptr, buf, len);
|
---|
596 | cursize += len;
|
---|
597 | ptr += len;
|
---|
598 | size -= len;
|
---|
599 | st->pos += len;
|
---|
600 | if(buf[len - 1] == '\x0A') /* '\n' */
|
---|
601 | st->pos = 0;
|
---|
602 | st->bufbeg += consumed;
|
---|
603 | }
|
---|
604 |
|
---|
605 | return cursize;
|
---|
606 | }
|
---|
607 |
|
---|
608 | static curl_off_t encoder_qp_size(curl_mimepart *part)
|
---|
609 | {
|
---|
610 | /* Determining the size can only be done by reading the data: unless the
|
---|
611 | data size is 0, we return it as unknown (-1). */
|
---|
612 | return part->datasize? -1: 0;
|
---|
613 | }
|
---|
614 |
|
---|
615 |
|
---|
616 | /* In-memory data callbacks. */
|
---|
617 | /* Argument is a pointer to the mime part. */
|
---|
618 | static size_t mime_mem_read(char *buffer, size_t size, size_t nitems,
|
---|
619 | void *instream)
|
---|
620 | {
|
---|
621 | curl_mimepart *part = (curl_mimepart *) instream;
|
---|
622 | size_t sz = (size_t) part->datasize - part->state.offset;
|
---|
623 | (void) size; /* Always 1.*/
|
---|
624 |
|
---|
625 | if(sz > nitems)
|
---|
626 | sz = nitems;
|
---|
627 |
|
---|
628 | if(sz)
|
---|
629 | memcpy(buffer, (char *) &part->data[part->state.offset], sz);
|
---|
630 |
|
---|
631 | part->state.offset += sz;
|
---|
632 | return sz;
|
---|
633 | }
|
---|
634 |
|
---|
635 | static int mime_mem_seek(void *instream, curl_off_t offset, int whence)
|
---|
636 | {
|
---|
637 | curl_mimepart *part = (curl_mimepart *) instream;
|
---|
638 |
|
---|
639 | switch(whence) {
|
---|
640 | case SEEK_CUR:
|
---|
641 | offset += part->state.offset;
|
---|
642 | break;
|
---|
643 | case SEEK_END:
|
---|
644 | offset += part->datasize;
|
---|
645 | break;
|
---|
646 | }
|
---|
647 |
|
---|
648 | if(offset < 0 || offset > part->datasize)
|
---|
649 | return CURL_SEEKFUNC_FAIL;
|
---|
650 |
|
---|
651 | part->state.offset = (size_t) offset;
|
---|
652 | return CURL_SEEKFUNC_OK;
|
---|
653 | }
|
---|
654 |
|
---|
655 | static void mime_mem_free(void *ptr)
|
---|
656 | {
|
---|
657 | Curl_safefree(((curl_mimepart *) ptr)->data);
|
---|
658 | }
|
---|
659 |
|
---|
660 |
|
---|
661 | /* Named file callbacks. */
|
---|
662 | /* Argument is a pointer to the mime part. */
|
---|
663 | static int mime_open_file(curl_mimepart * part)
|
---|
664 | {
|
---|
665 | /* Open a MIMEKIND_FILE part. */
|
---|
666 |
|
---|
667 | if(part->fp)
|
---|
668 | return 0;
|
---|
669 | part->fp = fopen_read(part->data, "rb");
|
---|
670 | return part->fp? 0: -1;
|
---|
671 | }
|
---|
672 |
|
---|
673 | static size_t mime_file_read(char *buffer, size_t size, size_t nitems,
|
---|
674 | void *instream)
|
---|
675 | {
|
---|
676 | curl_mimepart *part = (curl_mimepart *) instream;
|
---|
677 |
|
---|
678 | if(mime_open_file(part))
|
---|
679 | return READ_ERROR;
|
---|
680 |
|
---|
681 | return fread(buffer, size, nitems, part->fp);
|
---|
682 | }
|
---|
683 |
|
---|
684 | static int mime_file_seek(void *instream, curl_off_t offset, int whence)
|
---|
685 | {
|
---|
686 | curl_mimepart *part = (curl_mimepart *) instream;
|
---|
687 |
|
---|
688 | if(whence == SEEK_SET && !offset && !part->fp)
|
---|
689 | return CURL_SEEKFUNC_OK; /* Not open: implicitly already at BOF. */
|
---|
690 |
|
---|
691 | if(mime_open_file(part))
|
---|
692 | return CURL_SEEKFUNC_FAIL;
|
---|
693 |
|
---|
694 | return fseek(part->fp, (long) offset, whence)?
|
---|
695 | CURL_SEEKFUNC_CANTSEEK: CURL_SEEKFUNC_OK;
|
---|
696 | }
|
---|
697 |
|
---|
698 | static void mime_file_free(void *ptr)
|
---|
699 | {
|
---|
700 | curl_mimepart *part = (curl_mimepart *) ptr;
|
---|
701 |
|
---|
702 | if(part->fp) {
|
---|
703 | fclose(part->fp);
|
---|
704 | part->fp = NULL;
|
---|
705 | }
|
---|
706 | Curl_safefree(part->data);
|
---|
707 | part->data = NULL;
|
---|
708 | }
|
---|
709 |
|
---|
710 |
|
---|
711 | /* Subparts callbacks. */
|
---|
712 | /* Argument is a pointer to the mime structure. */
|
---|
713 |
|
---|
714 | /* Readback a byte string segment. */
|
---|
715 | static size_t readback_bytes(mime_state *state,
|
---|
716 | char *buffer, size_t bufsize,
|
---|
717 | const char *bytes, size_t numbytes,
|
---|
718 | const char *trail)
|
---|
719 | {
|
---|
720 | size_t sz;
|
---|
721 |
|
---|
722 | if(numbytes > state->offset) {
|
---|
723 | sz = numbytes - state->offset;
|
---|
724 | bytes += state->offset;
|
---|
725 | }
|
---|
726 | else {
|
---|
727 | size_t tsz = strlen(trail);
|
---|
728 |
|
---|
729 | sz = state->offset - numbytes;
|
---|
730 | if(sz >= tsz)
|
---|
731 | return 0;
|
---|
732 | bytes = trail + sz;
|
---|
733 | sz = tsz - sz;
|
---|
734 | }
|
---|
735 |
|
---|
736 | if(sz > bufsize)
|
---|
737 | sz = bufsize;
|
---|
738 |
|
---|
739 | memcpy(buffer, bytes, sz);
|
---|
740 | state->offset += sz;
|
---|
741 | return sz;
|
---|
742 | }
|
---|
743 |
|
---|
744 | /* Read a non-encoded part content. */
|
---|
745 | static size_t read_part_content(curl_mimepart *part,
|
---|
746 | char *buffer, size_t bufsize)
|
---|
747 | {
|
---|
748 | size_t sz = 0;
|
---|
749 |
|
---|
750 | if(part->readfunc)
|
---|
751 | sz = part->readfunc(buffer, 1, bufsize, part->arg);
|
---|
752 | return sz;
|
---|
753 | }
|
---|
754 |
|
---|
755 | /* Read and encode part content. */
|
---|
756 | static size_t read_encoded_part_content(curl_mimepart *part,
|
---|
757 | char *buffer, size_t bufsize)
|
---|
758 | {
|
---|
759 | mime_encoder_state *st = &part->encstate;
|
---|
760 | size_t cursize = 0;
|
---|
761 | size_t sz;
|
---|
762 | bool ateof = FALSE;
|
---|
763 |
|
---|
764 | while(bufsize) {
|
---|
765 | if(st->bufbeg < st->bufend || ateof) {
|
---|
766 | /* Encode buffered data. */
|
---|
767 | sz = part->encoder->encodefunc(buffer, bufsize, ateof, part);
|
---|
768 | switch(sz) {
|
---|
769 | case 0:
|
---|
770 | if(ateof)
|
---|
771 | return cursize;
|
---|
772 | break;
|
---|
773 | case CURL_READFUNC_ABORT:
|
---|
774 | case CURL_READFUNC_PAUSE:
|
---|
775 | case READ_ERROR:
|
---|
776 | return cursize? cursize: sz;
|
---|
777 | default:
|
---|
778 | cursize += sz;
|
---|
779 | buffer += sz;
|
---|
780 | bufsize -= sz;
|
---|
781 | continue;
|
---|
782 | }
|
---|
783 | }
|
---|
784 |
|
---|
785 | /* We need more data in input buffer. */
|
---|
786 | if(st->bufbeg) {
|
---|
787 | size_t len = st->bufend - st->bufbeg;
|
---|
788 |
|
---|
789 | if(len)
|
---|
790 | memmove(st->buf, st->buf + st->bufbeg, len);
|
---|
791 | st->bufbeg = 0;
|
---|
792 | st->bufend = len;
|
---|
793 | }
|
---|
794 | if(st->bufend >= sizeof st->buf)
|
---|
795 | return cursize? cursize: READ_ERROR; /* Buffer full. */
|
---|
796 | sz = read_part_content(part, st->buf + st->bufend,
|
---|
797 | sizeof st->buf - st->bufend);
|
---|
798 | switch(sz) {
|
---|
799 | case 0:
|
---|
800 | ateof = TRUE;
|
---|
801 | break;
|
---|
802 | case CURL_READFUNC_ABORT:
|
---|
803 | case CURL_READFUNC_PAUSE:
|
---|
804 | case READ_ERROR:
|
---|
805 | return cursize? cursize: sz;
|
---|
806 | default:
|
---|
807 | st->bufend += sz;
|
---|
808 | break;
|
---|
809 | }
|
---|
810 | }
|
---|
811 |
|
---|
812 | return cursize;
|
---|
813 | }
|
---|
814 |
|
---|
815 | /* Readback a mime part. */
|
---|
816 | static size_t readback_part(curl_mimepart *part,
|
---|
817 | char *buffer, size_t bufsize)
|
---|
818 | {
|
---|
819 | size_t cursize = 0;
|
---|
820 | size_t sz;
|
---|
821 | struct curl_slist *hdr;
|
---|
822 | #ifdef CURL_DOES_CONVERSIONS
|
---|
823 | char *convbuf = buffer;
|
---|
824 | #endif
|
---|
825 |
|
---|
826 | /* Readback from part. */
|
---|
827 |
|
---|
828 | while(bufsize) {
|
---|
829 | sz = 0;
|
---|
830 | hdr = (struct curl_slist *) part->state.ptr;
|
---|
831 | switch(part->state.state) {
|
---|
832 | case MIMESTATE_BEGIN:
|
---|
833 | mimesetstate(&part->state, part->flags & MIME_BODY_ONLY? MIMESTATE_BODY:
|
---|
834 | MIMESTATE_CURLHEADERS, part->curlheaders);
|
---|
835 | break;
|
---|
836 | case MIMESTATE_USERHEADERS:
|
---|
837 | if(!hdr) {
|
---|
838 | mimesetstate(&part->state, MIMESTATE_EOH, NULL);
|
---|
839 | break;
|
---|
840 | }
|
---|
841 | if(match_header(hdr, "Content-Type", 12)) {
|
---|
842 | mimesetstate(&part->state, MIMESTATE_USERHEADERS, hdr->next);
|
---|
843 | break;
|
---|
844 | }
|
---|
845 | /* FALLTHROUGH */
|
---|
846 | case MIMESTATE_CURLHEADERS:
|
---|
847 | if(!hdr)
|
---|
848 | mimesetstate(&part->state, MIMESTATE_USERHEADERS, part->userheaders);
|
---|
849 | else {
|
---|
850 | sz = readback_bytes(&part->state, buffer, bufsize,
|
---|
851 | hdr->data, strlen(hdr->data), "\r\n");
|
---|
852 | if(!sz)
|
---|
853 | mimesetstate(&part->state, part->state.state, hdr->next);
|
---|
854 | }
|
---|
855 | break;
|
---|
856 | case MIMESTATE_EOH:
|
---|
857 | sz = readback_bytes(&part->state, buffer, bufsize, "\r\n", 2, "");
|
---|
858 | if(!sz)
|
---|
859 | mimesetstate(&part->state, MIMESTATE_BODY, NULL);
|
---|
860 | break;
|
---|
861 | case MIMESTATE_BODY:
|
---|
862 | #ifdef CURL_DOES_CONVERSIONS
|
---|
863 | if(part->easy && convbuf < buffer) {
|
---|
864 | CURLcode result = Curl_convert_to_network(part->easy, convbuf,
|
---|
865 | buffer - convbuf);
|
---|
866 | if(result)
|
---|
867 | return READ_ERROR;
|
---|
868 | convbuf = buffer;
|
---|
869 | }
|
---|
870 | #endif
|
---|
871 | cleanup_encoder_state(&part->encstate);
|
---|
872 | mimesetstate(&part->state, MIMESTATE_CONTENT, NULL);
|
---|
873 | break;
|
---|
874 | case MIMESTATE_CONTENT:
|
---|
875 | if(part->encoder)
|
---|
876 | sz = read_encoded_part_content(part, buffer, bufsize);
|
---|
877 | else
|
---|
878 | sz = read_part_content(part, buffer, bufsize);
|
---|
879 | switch(sz) {
|
---|
880 | case 0:
|
---|
881 | mimesetstate(&part->state, MIMESTATE_END, NULL);
|
---|
882 | /* Try sparing open file descriptors. */
|
---|
883 | if(part->kind == MIMEKIND_FILE && part->fp) {
|
---|
884 | fclose(part->fp);
|
---|
885 | part->fp = NULL;
|
---|
886 | }
|
---|
887 | /* FALLTHROUGH */
|
---|
888 | case CURL_READFUNC_ABORT:
|
---|
889 | case CURL_READFUNC_PAUSE:
|
---|
890 | case READ_ERROR:
|
---|
891 | return cursize? cursize: sz;
|
---|
892 | }
|
---|
893 | break;
|
---|
894 | case MIMESTATE_END:
|
---|
895 | return cursize;
|
---|
896 | default:
|
---|
897 | break; /* Other values not in part state. */
|
---|
898 | }
|
---|
899 |
|
---|
900 | /* Bump buffer and counters according to read size. */
|
---|
901 | cursize += sz;
|
---|
902 | buffer += sz;
|
---|
903 | bufsize -= sz;
|
---|
904 | }
|
---|
905 |
|
---|
906 | #ifdef CURL_DOES_CONVERSIONS
|
---|
907 | if(part->easy && convbuf < buffer &&
|
---|
908 | part->state.state < MIMESTATE_BODY) {
|
---|
909 | CURLcode result = Curl_convert_to_network(part->easy, convbuf,
|
---|
910 | buffer - convbuf);
|
---|
911 | if(result)
|
---|
912 | return READ_ERROR;
|
---|
913 | }
|
---|
914 | #endif
|
---|
915 |
|
---|
916 | return cursize;
|
---|
917 | }
|
---|
918 |
|
---|
919 | /* Readback from mime. */
|
---|
920 | static size_t mime_subparts_read(char *buffer, size_t size, size_t nitems,
|
---|
921 | void *instream)
|
---|
922 | {
|
---|
923 | curl_mime *mime = (curl_mime *) instream;
|
---|
924 | size_t cursize = 0;
|
---|
925 | size_t sz;
|
---|
926 | curl_mimepart *part;
|
---|
927 | #ifdef CURL_DOES_CONVERSIONS
|
---|
928 | char *convbuf = buffer;
|
---|
929 | #endif
|
---|
930 |
|
---|
931 | (void) size; /* Always 1. */
|
---|
932 |
|
---|
933 | while(nitems) {
|
---|
934 | sz = 0;
|
---|
935 | part = mime->state.ptr;
|
---|
936 | switch(mime->state.state) {
|
---|
937 | case MIMESTATE_BEGIN:
|
---|
938 | case MIMESTATE_BODY:
|
---|
939 | #ifdef CURL_DOES_CONVERSIONS
|
---|
940 | convbuf = buffer;
|
---|
941 | #endif
|
---|
942 | mimesetstate(&mime->state, MIMESTATE_BOUNDARY1, mime->firstpart);
|
---|
943 | /* The first boundary always follows the header termination empty line,
|
---|
944 | so is always preceded by a CRLK. We can then spare 2 characters
|
---|
945 | by skipping the leading CRLF in boundary. */
|
---|
946 | mime->state.offset += 2;
|
---|
947 | break;
|
---|
948 | case MIMESTATE_BOUNDARY1:
|
---|
949 | sz = readback_bytes(&mime->state, buffer, nitems, "\r\n--", 4, "");
|
---|
950 | if(!sz)
|
---|
951 | mimesetstate(&mime->state, MIMESTATE_BOUNDARY2, part);
|
---|
952 | break;
|
---|
953 | case MIMESTATE_BOUNDARY2:
|
---|
954 | sz = readback_bytes(&mime->state, buffer, nitems, mime->boundary,
|
---|
955 | strlen(mime->boundary), part? "\r\n": "--\r\n");
|
---|
956 | if(!sz) {
|
---|
957 | #ifdef CURL_DOES_CONVERSIONS
|
---|
958 | if(mime->easy && convbuf < buffer) {
|
---|
959 | CURLcode result = Curl_convert_to_network(mime->easy, convbuf,
|
---|
960 | buffer - convbuf);
|
---|
961 | if(result)
|
---|
962 | return READ_ERROR;
|
---|
963 | convbuf = buffer;
|
---|
964 | }
|
---|
965 | #endif
|
---|
966 | mimesetstate(&mime->state, MIMESTATE_CONTENT, part);
|
---|
967 | }
|
---|
968 | break;
|
---|
969 | case MIMESTATE_CONTENT:
|
---|
970 | if(!part) {
|
---|
971 | mimesetstate(&mime->state, MIMESTATE_END, NULL);
|
---|
972 | break;
|
---|
973 | }
|
---|
974 | sz = readback_part(part, buffer, nitems);
|
---|
975 | switch(sz) {
|
---|
976 | case CURL_READFUNC_ABORT:
|
---|
977 | case CURL_READFUNC_PAUSE:
|
---|
978 | case READ_ERROR:
|
---|
979 | return cursize? cursize: sz;
|
---|
980 | case 0:
|
---|
981 | #ifdef CURL_DOES_CONVERSIONS
|
---|
982 | convbuf = buffer;
|
---|
983 | #endif
|
---|
984 | mimesetstate(&mime->state, MIMESTATE_BOUNDARY1, part->nextpart);
|
---|
985 | break;
|
---|
986 | }
|
---|
987 | break;
|
---|
988 | case MIMESTATE_END:
|
---|
989 | return cursize;
|
---|
990 | default:
|
---|
991 | break; /* other values not used in mime state. */
|
---|
992 | }
|
---|
993 |
|
---|
994 | /* Bump buffer and counters according to read size. */
|
---|
995 | cursize += sz;
|
---|
996 | buffer += sz;
|
---|
997 | nitems -= sz;
|
---|
998 | }
|
---|
999 |
|
---|
1000 | #ifdef CURL_DOES_CONVERSIONS
|
---|
1001 | if(mime->easy && convbuf < buffer &&
|
---|
1002 | mime->state.state <= MIMESTATE_CONTENT) {
|
---|
1003 | CURLcode result = Curl_convert_to_network(mime->easy, convbuf,
|
---|
1004 | buffer - convbuf);
|
---|
1005 | if(result)
|
---|
1006 | return READ_ERROR;
|
---|
1007 | }
|
---|
1008 | #endif
|
---|
1009 |
|
---|
1010 | return cursize;
|
---|
1011 | }
|
---|
1012 |
|
---|
1013 | static int mime_part_rewind(curl_mimepart *part)
|
---|
1014 | {
|
---|
1015 | int res = CURL_SEEKFUNC_OK;
|
---|
1016 | enum mimestate targetstate = MIMESTATE_BEGIN;
|
---|
1017 |
|
---|
1018 | if(part->flags & MIME_BODY_ONLY)
|
---|
1019 | targetstate = MIMESTATE_BODY;
|
---|
1020 | cleanup_encoder_state(&part->encstate);
|
---|
1021 | if(part->state.state > targetstate) {
|
---|
1022 | res = CURL_SEEKFUNC_CANTSEEK;
|
---|
1023 | if(part->seekfunc) {
|
---|
1024 | res = part->seekfunc(part->arg, (curl_off_t) 0, SEEK_SET);
|
---|
1025 | switch(res) {
|
---|
1026 | case CURL_SEEKFUNC_OK:
|
---|
1027 | case CURL_SEEKFUNC_FAIL:
|
---|
1028 | case CURL_SEEKFUNC_CANTSEEK:
|
---|
1029 | break;
|
---|
1030 | case -1: /* For fseek() error. */
|
---|
1031 | res = CURL_SEEKFUNC_CANTSEEK;
|
---|
1032 | break;
|
---|
1033 | default:
|
---|
1034 | res = CURL_SEEKFUNC_FAIL;
|
---|
1035 | break;
|
---|
1036 | }
|
---|
1037 | }
|
---|
1038 | }
|
---|
1039 |
|
---|
1040 | if(res == CURL_SEEKFUNC_OK)
|
---|
1041 | mimesetstate(&part->state, targetstate, NULL);
|
---|
1042 |
|
---|
1043 | return res;
|
---|
1044 | }
|
---|
1045 |
|
---|
1046 | static int mime_subparts_seek(void *instream, curl_off_t offset, int whence)
|
---|
1047 | {
|
---|
1048 | curl_mime *mime = (curl_mime *) instream;
|
---|
1049 | curl_mimepart *part;
|
---|
1050 | int result = CURL_SEEKFUNC_OK;
|
---|
1051 | int res;
|
---|
1052 |
|
---|
1053 | if(whence != SEEK_SET || offset)
|
---|
1054 | return CURL_SEEKFUNC_CANTSEEK; /* Only support full rewind. */
|
---|
1055 |
|
---|
1056 | if(mime->state.state == MIMESTATE_BEGIN)
|
---|
1057 | return CURL_SEEKFUNC_OK; /* Already rewound. */
|
---|
1058 |
|
---|
1059 | for(part = mime->firstpart; part; part = part->nextpart) {
|
---|
1060 | res = mime_part_rewind(part);
|
---|
1061 | if(res != CURL_SEEKFUNC_OK)
|
---|
1062 | result = res;
|
---|
1063 | }
|
---|
1064 |
|
---|
1065 | if(result == CURL_SEEKFUNC_OK)
|
---|
1066 | mimesetstate(&mime->state, MIMESTATE_BEGIN, NULL);
|
---|
1067 |
|
---|
1068 | return result;
|
---|
1069 | }
|
---|
1070 |
|
---|
1071 | /* Release part content. */
|
---|
1072 | static void cleanup_part_content(curl_mimepart *part)
|
---|
1073 | {
|
---|
1074 | if(part->freefunc)
|
---|
1075 | part->freefunc(part->arg);
|
---|
1076 |
|
---|
1077 | part->readfunc = NULL;
|
---|
1078 | part->seekfunc = NULL;
|
---|
1079 | part->freefunc = NULL;
|
---|
1080 | part->arg = (void *) part; /* Defaults to part itself. */
|
---|
1081 | part->data = NULL;
|
---|
1082 | part->fp = NULL;
|
---|
1083 | part->datasize = (curl_off_t) 0; /* No size yet. */
|
---|
1084 | cleanup_encoder_state(&part->encstate);
|
---|
1085 | part->kind = MIMEKIND_NONE;
|
---|
1086 | }
|
---|
1087 |
|
---|
1088 | static void mime_subparts_free(void *ptr)
|
---|
1089 | {
|
---|
1090 | curl_mime *mime = (curl_mime *) ptr;
|
---|
1091 |
|
---|
1092 | if(mime && mime->parent) {
|
---|
1093 | mime->parent->freefunc = NULL; /* Be sure we won't be called again. */
|
---|
1094 | cleanup_part_content(mime->parent); /* Avoid dangling pointer in part. */
|
---|
1095 | }
|
---|
1096 | curl_mime_free(mime);
|
---|
1097 | }
|
---|
1098 |
|
---|
1099 | /* Do not free subparts: unbind them. This is used for the top level only. */
|
---|
1100 | static void mime_subparts_unbind(void *ptr)
|
---|
1101 | {
|
---|
1102 | curl_mime *mime = (curl_mime *) ptr;
|
---|
1103 |
|
---|
1104 | if(mime && mime->parent) {
|
---|
1105 | mime->parent->freefunc = NULL; /* Be sure we won't be called again. */
|
---|
1106 | cleanup_part_content(mime->parent); /* Avoid dangling pointer in part. */
|
---|
1107 | mime->parent = NULL;
|
---|
1108 | }
|
---|
1109 | }
|
---|
1110 |
|
---|
1111 |
|
---|
1112 | void Curl_mime_cleanpart(curl_mimepart *part)
|
---|
1113 | {
|
---|
1114 | cleanup_part_content(part);
|
---|
1115 | curl_slist_free_all(part->curlheaders);
|
---|
1116 | if(part->flags & MIME_USERHEADERS_OWNER)
|
---|
1117 | curl_slist_free_all(part->userheaders);
|
---|
1118 | Curl_safefree(part->mimetype);
|
---|
1119 | Curl_safefree(part->name);
|
---|
1120 | Curl_safefree(part->filename);
|
---|
1121 | Curl_mime_initpart(part, part->easy);
|
---|
1122 | }
|
---|
1123 |
|
---|
1124 | /* Recursively delete a mime handle and its parts. */
|
---|
1125 | void curl_mime_free(curl_mime *mime)
|
---|
1126 | {
|
---|
1127 | curl_mimepart *part;
|
---|
1128 |
|
---|
1129 | if(mime) {
|
---|
1130 | mime_subparts_unbind(mime); /* Be sure it's not referenced anymore. */
|
---|
1131 | while(mime->firstpart) {
|
---|
1132 | part = mime->firstpart;
|
---|
1133 | mime->firstpart = part->nextpart;
|
---|
1134 | Curl_mime_cleanpart(part);
|
---|
1135 | free(part);
|
---|
1136 | }
|
---|
1137 |
|
---|
1138 | free(mime->boundary);
|
---|
1139 | free(mime);
|
---|
1140 | }
|
---|
1141 | }
|
---|
1142 |
|
---|
1143 | /*
|
---|
1144 | * Mime build functions.
|
---|
1145 | */
|
---|
1146 |
|
---|
1147 | /* Create a mime handle. */
|
---|
1148 | curl_mime *curl_mime_init(struct Curl_easy *easy)
|
---|
1149 | {
|
---|
1150 | curl_mime *mime;
|
---|
1151 |
|
---|
1152 | mime = (curl_mime *) malloc(sizeof *mime);
|
---|
1153 |
|
---|
1154 | if(mime) {
|
---|
1155 | mime->easy = easy;
|
---|
1156 | mime->parent = NULL;
|
---|
1157 | mime->firstpart = NULL;
|
---|
1158 | mime->lastpart = NULL;
|
---|
1159 |
|
---|
1160 | /* Get a part boundary. */
|
---|
1161 | mime->boundary = malloc(24 + MIME_RAND_BOUNDARY_CHARS + 1);
|
---|
1162 | if(!mime->boundary) {
|
---|
1163 | free(mime);
|
---|
1164 | return NULL;
|
---|
1165 | }
|
---|
1166 |
|
---|
1167 | memset(mime->boundary, '-', 24);
|
---|
1168 | Curl_rand_hex(easy, (unsigned char *) mime->boundary + 24,
|
---|
1169 | MIME_RAND_BOUNDARY_CHARS + 1);
|
---|
1170 | mimesetstate(&mime->state, MIMESTATE_BEGIN, NULL);
|
---|
1171 | }
|
---|
1172 |
|
---|
1173 | return mime;
|
---|
1174 | }
|
---|
1175 |
|
---|
1176 | /* Initialize a mime part. */
|
---|
1177 | void Curl_mime_initpart(curl_mimepart *part, struct Curl_easy *easy)
|
---|
1178 | {
|
---|
1179 | memset((char *) part, 0, sizeof *part);
|
---|
1180 | part->easy = easy;
|
---|
1181 | mimesetstate(&part->state, MIMESTATE_BEGIN, NULL);
|
---|
1182 | }
|
---|
1183 |
|
---|
1184 | /* Create a mime part and append it to a mime handle's part list. */
|
---|
1185 | curl_mimepart *curl_mime_addpart(curl_mime *mime)
|
---|
1186 | {
|
---|
1187 | curl_mimepart *part;
|
---|
1188 |
|
---|
1189 | if(!mime)
|
---|
1190 | return NULL;
|
---|
1191 |
|
---|
1192 | part = (curl_mimepart *) malloc(sizeof *part);
|
---|
1193 |
|
---|
1194 | if(part) {
|
---|
1195 | Curl_mime_initpart(part, mime->easy);
|
---|
1196 | part->parent = mime;
|
---|
1197 |
|
---|
1198 | if(mime->lastpart)
|
---|
1199 | mime->lastpart->nextpart = part;
|
---|
1200 | else
|
---|
1201 | mime->firstpart = part;
|
---|
1202 |
|
---|
1203 | mime->lastpart = part;
|
---|
1204 | }
|
---|
1205 |
|
---|
1206 | return part;
|
---|
1207 | }
|
---|
1208 |
|
---|
1209 | /* Set mime part name. */
|
---|
1210 | CURLcode curl_mime_name(curl_mimepart *part, const char *name)
|
---|
1211 | {
|
---|
1212 | if(!part)
|
---|
1213 | return CURLE_BAD_FUNCTION_ARGUMENT;
|
---|
1214 |
|
---|
1215 | Curl_safefree(part->name);
|
---|
1216 | part->name = NULL;
|
---|
1217 |
|
---|
1218 | if(name) {
|
---|
1219 | part->name = strdup(name);
|
---|
1220 | if(!part->name)
|
---|
1221 | return CURLE_OUT_OF_MEMORY;
|
---|
1222 | }
|
---|
1223 |
|
---|
1224 | return CURLE_OK;
|
---|
1225 | }
|
---|
1226 |
|
---|
1227 | /* Set mime part remote file name. */
|
---|
1228 | CURLcode curl_mime_filename(curl_mimepart *part, const char *filename)
|
---|
1229 | {
|
---|
1230 | if(!part)
|
---|
1231 | return CURLE_BAD_FUNCTION_ARGUMENT;
|
---|
1232 |
|
---|
1233 | Curl_safefree(part->filename);
|
---|
1234 | part->filename = NULL;
|
---|
1235 |
|
---|
1236 | if(filename) {
|
---|
1237 | part->filename = strdup(filename);
|
---|
1238 | if(!part->filename)
|
---|
1239 | return CURLE_OUT_OF_MEMORY;
|
---|
1240 | }
|
---|
1241 |
|
---|
1242 | return CURLE_OK;
|
---|
1243 | }
|
---|
1244 |
|
---|
1245 | /* Set mime part content from memory data. */
|
---|
1246 | CURLcode curl_mime_data(curl_mimepart *part,
|
---|
1247 | const char *data, size_t datasize)
|
---|
1248 | {
|
---|
1249 | if(!part)
|
---|
1250 | return CURLE_BAD_FUNCTION_ARGUMENT;
|
---|
1251 |
|
---|
1252 | cleanup_part_content(part);
|
---|
1253 |
|
---|
1254 | if(data) {
|
---|
1255 | if(datasize == CURL_ZERO_TERMINATED)
|
---|
1256 | datasize = strlen(data);
|
---|
1257 |
|
---|
1258 | part->data = malloc(datasize + 1);
|
---|
1259 | if(!part->data)
|
---|
1260 | return CURLE_OUT_OF_MEMORY;
|
---|
1261 |
|
---|
1262 | part->datasize = datasize;
|
---|
1263 |
|
---|
1264 | if(datasize)
|
---|
1265 | memcpy(part->data, data, datasize);
|
---|
1266 | part->data[datasize] = '\0'; /* Set a nul terminator as sentinel. */
|
---|
1267 |
|
---|
1268 | part->readfunc = mime_mem_read;
|
---|
1269 | part->seekfunc = mime_mem_seek;
|
---|
1270 | part->freefunc = mime_mem_free;
|
---|
1271 | part->kind = MIMEKIND_DATA;
|
---|
1272 | }
|
---|
1273 |
|
---|
1274 | return CURLE_OK;
|
---|
1275 | }
|
---|
1276 |
|
---|
1277 | /* Set mime part content from named local file. */
|
---|
1278 | CURLcode curl_mime_filedata(curl_mimepart *part, const char *filename)
|
---|
1279 | {
|
---|
1280 | CURLcode result = CURLE_OK;
|
---|
1281 | char *base;
|
---|
1282 |
|
---|
1283 | if(!part)
|
---|
1284 | return CURLE_BAD_FUNCTION_ARGUMENT;
|
---|
1285 |
|
---|
1286 | cleanup_part_content(part);
|
---|
1287 |
|
---|
1288 | if(filename) {
|
---|
1289 | struct_stat sbuf;
|
---|
1290 |
|
---|
1291 | if(stat(filename, &sbuf) || access(filename, R_OK))
|
---|
1292 | result = CURLE_READ_ERROR;
|
---|
1293 |
|
---|
1294 | part->data = strdup(filename);
|
---|
1295 | if(!part->data)
|
---|
1296 | result = CURLE_OUT_OF_MEMORY;
|
---|
1297 |
|
---|
1298 | part->datasize = -1;
|
---|
1299 | if(!result && S_ISREG(sbuf.st_mode)) {
|
---|
1300 | part->datasize = filesize(filename, sbuf);
|
---|
1301 | part->seekfunc = mime_file_seek;
|
---|
1302 | }
|
---|
1303 |
|
---|
1304 | part->readfunc = mime_file_read;
|
---|
1305 | part->freefunc = mime_file_free;
|
---|
1306 | part->kind = MIMEKIND_FILE;
|
---|
1307 |
|
---|
1308 | /* As a side effect, set the filename to the current file's base name.
|
---|
1309 | It is possible to withdraw this by explicitly calling
|
---|
1310 | curl_mime_filename() with a NULL filename argument after the current
|
---|
1311 | call. */
|
---|
1312 | base = strippath(filename);
|
---|
1313 | if(!base)
|
---|
1314 | result = CURLE_OUT_OF_MEMORY;
|
---|
1315 | else {
|
---|
1316 | CURLcode res = curl_mime_filename(part, base);
|
---|
1317 |
|
---|
1318 | if(res)
|
---|
1319 | result = res;
|
---|
1320 | free(base);
|
---|
1321 | }
|
---|
1322 | }
|
---|
1323 | return result;
|
---|
1324 | }
|
---|
1325 |
|
---|
1326 | /* Set mime part type. */
|
---|
1327 | CURLcode curl_mime_type(curl_mimepart *part, const char *mimetype)
|
---|
1328 | {
|
---|
1329 | if(!part)
|
---|
1330 | return CURLE_BAD_FUNCTION_ARGUMENT;
|
---|
1331 |
|
---|
1332 | Curl_safefree(part->mimetype);
|
---|
1333 | part->mimetype = NULL;
|
---|
1334 |
|
---|
1335 | if(mimetype) {
|
---|
1336 | part->mimetype = strdup(mimetype);
|
---|
1337 | if(!part->mimetype)
|
---|
1338 | return CURLE_OUT_OF_MEMORY;
|
---|
1339 | }
|
---|
1340 |
|
---|
1341 | return CURLE_OK;
|
---|
1342 | }
|
---|
1343 |
|
---|
1344 | /* Set mime data transfer encoder. */
|
---|
1345 | CURLcode curl_mime_encoder(curl_mimepart *part, const char *encoding)
|
---|
1346 | {
|
---|
1347 | CURLcode result = CURLE_BAD_FUNCTION_ARGUMENT;
|
---|
1348 | const mime_encoder *mep;
|
---|
1349 |
|
---|
1350 | if(!part)
|
---|
1351 | return result;
|
---|
1352 |
|
---|
1353 | part->encoder = NULL;
|
---|
1354 |
|
---|
1355 | if(!encoding)
|
---|
1356 | return CURLE_OK; /* Removing current encoder. */
|
---|
1357 |
|
---|
1358 | for(mep = encoders; mep->name; mep++)
|
---|
1359 | if(strcasecompare(encoding, mep->name)) {
|
---|
1360 | part->encoder = mep;
|
---|
1361 | result = CURLE_OK;
|
---|
1362 | }
|
---|
1363 |
|
---|
1364 | return result;
|
---|
1365 | }
|
---|
1366 |
|
---|
1367 | /* Set mime part headers. */
|
---|
1368 | CURLcode curl_mime_headers(curl_mimepart *part,
|
---|
1369 | struct curl_slist *headers, int take_ownership)
|
---|
1370 | {
|
---|
1371 | if(!part)
|
---|
1372 | return CURLE_BAD_FUNCTION_ARGUMENT;
|
---|
1373 |
|
---|
1374 | if(part->flags & MIME_USERHEADERS_OWNER) {
|
---|
1375 | if(part->userheaders != headers) /* Allow setting twice the same list. */
|
---|
1376 | curl_slist_free_all(part->userheaders);
|
---|
1377 | part->flags &= ~MIME_USERHEADERS_OWNER;
|
---|
1378 | }
|
---|
1379 | part->userheaders = headers;
|
---|
1380 | if(headers && take_ownership)
|
---|
1381 | part->flags |= MIME_USERHEADERS_OWNER;
|
---|
1382 | return CURLE_OK;
|
---|
1383 | }
|
---|
1384 |
|
---|
1385 | /* Set mime part content from callback. */
|
---|
1386 | CURLcode curl_mime_data_cb(curl_mimepart *part, curl_off_t datasize,
|
---|
1387 | curl_read_callback readfunc,
|
---|
1388 | curl_seek_callback seekfunc,
|
---|
1389 | curl_free_callback freefunc, void *arg)
|
---|
1390 | {
|
---|
1391 | if(!part)
|
---|
1392 | return CURLE_BAD_FUNCTION_ARGUMENT;
|
---|
1393 |
|
---|
1394 | cleanup_part_content(part);
|
---|
1395 |
|
---|
1396 | if(readfunc) {
|
---|
1397 | part->readfunc = readfunc;
|
---|
1398 | part->seekfunc = seekfunc;
|
---|
1399 | part->freefunc = freefunc;
|
---|
1400 | part->arg = arg;
|
---|
1401 | part->datasize = datasize;
|
---|
1402 | part->kind = MIMEKIND_CALLBACK;
|
---|
1403 | }
|
---|
1404 |
|
---|
1405 | return CURLE_OK;
|
---|
1406 | }
|
---|
1407 |
|
---|
1408 | /* Set mime part content from subparts. */
|
---|
1409 | CURLcode Curl_mime_set_subparts(curl_mimepart *part,
|
---|
1410 | curl_mime *subparts, int take_ownership)
|
---|
1411 | {
|
---|
1412 | curl_mime *root;
|
---|
1413 |
|
---|
1414 | if(!part)
|
---|
1415 | return CURLE_BAD_FUNCTION_ARGUMENT;
|
---|
1416 |
|
---|
1417 | /* Accept setting twice the same subparts. */
|
---|
1418 | if(part->kind == MIMEKIND_MULTIPART && part->arg == subparts)
|
---|
1419 | return CURLE_OK;
|
---|
1420 |
|
---|
1421 | cleanup_part_content(part);
|
---|
1422 |
|
---|
1423 | if(subparts) {
|
---|
1424 | /* Must belong to the same data handle. */
|
---|
1425 | if(part->easy && subparts->easy && part->easy != subparts->easy)
|
---|
1426 | return CURLE_BAD_FUNCTION_ARGUMENT;
|
---|
1427 |
|
---|
1428 | /* Should not have been attached already. */
|
---|
1429 | if(subparts->parent)
|
---|
1430 | return CURLE_BAD_FUNCTION_ARGUMENT;
|
---|
1431 |
|
---|
1432 | /* Should not be the part's root. */
|
---|
1433 | root = part->parent;
|
---|
1434 | if(root) {
|
---|
1435 | while(root->parent && root->parent->parent)
|
---|
1436 | root = root->parent->parent;
|
---|
1437 | if(subparts == root) {
|
---|
1438 | if(part->easy)
|
---|
1439 | failf(part->easy, "Can't add itself as a subpart!");
|
---|
1440 | return CURLE_BAD_FUNCTION_ARGUMENT;
|
---|
1441 | }
|
---|
1442 | }
|
---|
1443 |
|
---|
1444 | subparts->parent = part;
|
---|
1445 | part->readfunc = mime_subparts_read;
|
---|
1446 | part->seekfunc = mime_subparts_seek;
|
---|
1447 | part->freefunc = take_ownership? mime_subparts_free: mime_subparts_unbind;
|
---|
1448 | part->arg = subparts;
|
---|
1449 | part->datasize = -1;
|
---|
1450 | part->kind = MIMEKIND_MULTIPART;
|
---|
1451 | }
|
---|
1452 |
|
---|
1453 | return CURLE_OK;
|
---|
1454 | }
|
---|
1455 |
|
---|
1456 | CURLcode curl_mime_subparts(curl_mimepart *part, curl_mime *subparts)
|
---|
1457 | {
|
---|
1458 | return Curl_mime_set_subparts(part, subparts, TRUE);
|
---|
1459 | }
|
---|
1460 |
|
---|
1461 |
|
---|
1462 | /* Readback from top mime. */
|
---|
1463 | /* Argument is the dummy top part. */
|
---|
1464 | size_t Curl_mime_read(char *buffer, size_t size, size_t nitems, void *instream)
|
---|
1465 | {
|
---|
1466 | curl_mimepart *part = (curl_mimepart *) instream;
|
---|
1467 |
|
---|
1468 | (void) size; /* Always 1. */
|
---|
1469 | return readback_part(part, buffer, nitems);
|
---|
1470 | }
|
---|
1471 |
|
---|
1472 | /* Rewind mime stream. */
|
---|
1473 | CURLcode Curl_mime_rewind(curl_mimepart *part)
|
---|
1474 | {
|
---|
1475 | return mime_part_rewind(part) == CURL_SEEKFUNC_OK?
|
---|
1476 | CURLE_OK: CURLE_SEND_FAIL_REWIND;
|
---|
1477 | }
|
---|
1478 |
|
---|
1479 | /* Compute header list size. */
|
---|
1480 | static size_t slist_size(struct curl_slist *s,
|
---|
1481 | size_t overhead, const char *skip)
|
---|
1482 | {
|
---|
1483 | size_t size = 0;
|
---|
1484 | size_t skiplen = skip? strlen(skip): 0;
|
---|
1485 |
|
---|
1486 | for(; s; s = s->next)
|
---|
1487 | if(!skip || !match_header(s, skip, skiplen))
|
---|
1488 | size += strlen(s->data) + overhead;
|
---|
1489 | return size;
|
---|
1490 | }
|
---|
1491 |
|
---|
1492 | /* Get/compute multipart size. */
|
---|
1493 | static curl_off_t multipart_size(curl_mime *mime)
|
---|
1494 | {
|
---|
1495 | curl_off_t size;
|
---|
1496 | curl_off_t sz;
|
---|
1497 | size_t boundarysize;
|
---|
1498 | curl_mimepart *part;
|
---|
1499 |
|
---|
1500 | if(!mime)
|
---|
1501 | return 0; /* Not present -> empty. */
|
---|
1502 |
|
---|
1503 | boundarysize = 4 + strlen(mime->boundary) + 2;
|
---|
1504 | size = boundarysize; /* Final boundary - CRLF after headers. */
|
---|
1505 |
|
---|
1506 | for(part = mime->firstpart; part; part = part->nextpart) {
|
---|
1507 | sz = Curl_mime_size(part);
|
---|
1508 |
|
---|
1509 | if(sz < 0)
|
---|
1510 | size = sz;
|
---|
1511 |
|
---|
1512 | if(size >= 0)
|
---|
1513 | size += boundarysize + sz;
|
---|
1514 | }
|
---|
1515 |
|
---|
1516 | return size;
|
---|
1517 | }
|
---|
1518 |
|
---|
1519 | /* Get/compute mime size. */
|
---|
1520 | curl_off_t Curl_mime_size(curl_mimepart *part)
|
---|
1521 | {
|
---|
1522 | curl_off_t size;
|
---|
1523 |
|
---|
1524 | if(part->kind == MIMEKIND_MULTIPART)
|
---|
1525 | part->datasize = multipart_size(part->arg);
|
---|
1526 |
|
---|
1527 | size = part->datasize;
|
---|
1528 |
|
---|
1529 | if(part->encoder)
|
---|
1530 | size = part->encoder->sizefunc(part);
|
---|
1531 |
|
---|
1532 | if(size >= 0 && !(part->flags & MIME_BODY_ONLY)) {
|
---|
1533 | /* Compute total part size. */
|
---|
1534 | size += slist_size(part->curlheaders, 2, NULL);
|
---|
1535 | size += slist_size(part->userheaders, 2, "Content-Type");
|
---|
1536 | size += 2; /* CRLF after headers. */
|
---|
1537 | }
|
---|
1538 | return size;
|
---|
1539 | }
|
---|
1540 |
|
---|
1541 | /* Add a header. */
|
---|
1542 | /* VARARGS2 */
|
---|
1543 | CURLcode Curl_mime_add_header(struct curl_slist **slp, const char *fmt, ...)
|
---|
1544 | {
|
---|
1545 | struct curl_slist *hdr = NULL;
|
---|
1546 | char *s = NULL;
|
---|
1547 | va_list ap;
|
---|
1548 |
|
---|
1549 | va_start(ap, fmt);
|
---|
1550 | s = curl_mvaprintf(fmt, ap);
|
---|
1551 | va_end(ap);
|
---|
1552 |
|
---|
1553 | if(s) {
|
---|
1554 | hdr = Curl_slist_append_nodup(*slp, s);
|
---|
1555 | if(hdr)
|
---|
1556 | *slp = hdr;
|
---|
1557 | else
|
---|
1558 | free(s);
|
---|
1559 | }
|
---|
1560 |
|
---|
1561 | return hdr? CURLE_OK: CURLE_OUT_OF_MEMORY;
|
---|
1562 | }
|
---|
1563 |
|
---|
1564 | /* Add a content type header. */
|
---|
1565 | static CURLcode add_content_type(struct curl_slist **slp,
|
---|
1566 | const char *type, const char *boundary)
|
---|
1567 | {
|
---|
1568 | return Curl_mime_add_header(slp, "Content-Type: %s%s%s", type,
|
---|
1569 | boundary? "; boundary=": "",
|
---|
1570 | boundary? boundary: "");
|
---|
1571 | }
|
---|
1572 |
|
---|
1573 |
|
---|
1574 | static const char *ContentTypeForFilename(const char *filename)
|
---|
1575 | {
|
---|
1576 | unsigned int i;
|
---|
1577 |
|
---|
1578 | /*
|
---|
1579 | * If no content type was specified, we scan through a few well-known
|
---|
1580 | * extensions and pick the first we match!
|
---|
1581 | */
|
---|
1582 | struct ContentType {
|
---|
1583 | const char *extension;
|
---|
1584 | const char *type;
|
---|
1585 | };
|
---|
1586 | static const struct ContentType ctts[] = {
|
---|
1587 | {".gif", "image/gif"},
|
---|
1588 | {".jpg", "image/jpeg"},
|
---|
1589 | {".jpeg", "image/jpeg"},
|
---|
1590 | {".png", "image/png"},
|
---|
1591 | {".svg", "image/svg+xml"},
|
---|
1592 | {".txt", "text/plain"},
|
---|
1593 | {".htm", "text/html"},
|
---|
1594 | {".html", "text/html"},
|
---|
1595 | {".pdf", "application/pdf"},
|
---|
1596 | {".xml", "application/xml"}
|
---|
1597 | };
|
---|
1598 |
|
---|
1599 | if(filename) {
|
---|
1600 | size_t len1 = strlen(filename);
|
---|
1601 | const char *nameend = filename + len1;
|
---|
1602 |
|
---|
1603 | for(i = 0; i < sizeof ctts / sizeof ctts[0]; i++) {
|
---|
1604 | size_t len2 = strlen(ctts[i].extension);
|
---|
1605 |
|
---|
1606 | if(len1 >= len2 && strcasecompare(nameend - len2, ctts[i].extension))
|
---|
1607 | return ctts[i].type;
|
---|
1608 | }
|
---|
1609 | }
|
---|
1610 | return NULL;
|
---|
1611 | }
|
---|
1612 |
|
---|
1613 | CURLcode Curl_mime_prepare_headers(curl_mimepart *part,
|
---|
1614 | const char *contenttype,
|
---|
1615 | const char *disposition,
|
---|
1616 | enum mimestrategy strategy)
|
---|
1617 | {
|
---|
1618 | curl_mime *mime = NULL;
|
---|
1619 | const char *boundary = NULL;
|
---|
1620 | char *customct;
|
---|
1621 | const char *cte = NULL;
|
---|
1622 | CURLcode ret = CURLE_OK;
|
---|
1623 |
|
---|
1624 | /* Get rid of previously prepared headers. */
|
---|
1625 | curl_slist_free_all(part->curlheaders);
|
---|
1626 | part->curlheaders = NULL;
|
---|
1627 |
|
---|
1628 | /* Be sure we won't access old headers later. */
|
---|
1629 | if(part->state.state == MIMESTATE_CURLHEADERS)
|
---|
1630 | mimesetstate(&part->state, MIMESTATE_CURLHEADERS, NULL);
|
---|
1631 |
|
---|
1632 | /* Check if content type is specified. */
|
---|
1633 | customct = part->mimetype;
|
---|
1634 | if(!customct)
|
---|
1635 | customct = search_header(part->userheaders, "Content-Type");
|
---|
1636 | if(customct)
|
---|
1637 | contenttype = customct;
|
---|
1638 |
|
---|
1639 | /* If content type is not specified, try to determine it. */
|
---|
1640 | if(!contenttype) {
|
---|
1641 | switch(part->kind) {
|
---|
1642 | case MIMEKIND_MULTIPART:
|
---|
1643 | contenttype = MULTIPART_CONTENTTYPE_DEFAULT;
|
---|
1644 | break;
|
---|
1645 | case MIMEKIND_FILE:
|
---|
1646 | contenttype = ContentTypeForFilename(part->filename);
|
---|
1647 | if(!contenttype)
|
---|
1648 | contenttype = ContentTypeForFilename(part->data);
|
---|
1649 | if(!contenttype && part->filename)
|
---|
1650 | contenttype = FILE_CONTENTTYPE_DEFAULT;
|
---|
1651 | break;
|
---|
1652 | default:
|
---|
1653 | contenttype = ContentTypeForFilename(part->filename);
|
---|
1654 | break;
|
---|
1655 | }
|
---|
1656 | }
|
---|
1657 |
|
---|
1658 | if(part->kind == MIMEKIND_MULTIPART) {
|
---|
1659 | mime = (curl_mime *) part->arg;
|
---|
1660 | if(mime)
|
---|
1661 | boundary = mime->boundary;
|
---|
1662 | }
|
---|
1663 | else if(contenttype && !customct &&
|
---|
1664 | strcasecompare(contenttype, "text/plain"))
|
---|
1665 | if(strategy == MIMESTRATEGY_MAIL || !part->filename)
|
---|
1666 | contenttype = NULL;
|
---|
1667 |
|
---|
1668 | /* Issue content-disposition header only if not already set by caller. */
|
---|
1669 | if(!search_header(part->userheaders, "Content-Disposition")) {
|
---|
1670 | if(!disposition)
|
---|
1671 | if(part->filename || part->name ||
|
---|
1672 | (contenttype && !strncasecompare(contenttype, "multipart/", 10)))
|
---|
1673 | disposition = DISPOSITION_DEFAULT;
|
---|
1674 | if(disposition && curl_strequal(disposition, "attachment") &&
|
---|
1675 | !part->name && !part->filename)
|
---|
1676 | disposition = NULL;
|
---|
1677 | if(disposition) {
|
---|
1678 | char *name = NULL;
|
---|
1679 | char *filename = NULL;
|
---|
1680 |
|
---|
1681 | if(part->name) {
|
---|
1682 | name = escape_string(part->name);
|
---|
1683 | if(!name)
|
---|
1684 | ret = CURLE_OUT_OF_MEMORY;
|
---|
1685 | }
|
---|
1686 | if(!ret && part->filename) {
|
---|
1687 | filename = escape_string(part->filename);
|
---|
1688 | if(!filename)
|
---|
1689 | ret = CURLE_OUT_OF_MEMORY;
|
---|
1690 | }
|
---|
1691 | if(!ret)
|
---|
1692 | ret = Curl_mime_add_header(&part->curlheaders,
|
---|
1693 | "Content-Disposition: %s%s%s%s%s%s%s",
|
---|
1694 | disposition,
|
---|
1695 | name? "; name=\"": "",
|
---|
1696 | name? name: "",
|
---|
1697 | name? "\"": "",
|
---|
1698 | filename? "; filename=\"": "",
|
---|
1699 | filename? filename: "",
|
---|
1700 | filename? "\"": "");
|
---|
1701 | Curl_safefree(name);
|
---|
1702 | Curl_safefree(filename);
|
---|
1703 | if(ret)
|
---|
1704 | return ret;
|
---|
1705 | }
|
---|
1706 | }
|
---|
1707 |
|
---|
1708 | /* Issue Content-Type header. */
|
---|
1709 | if(contenttype) {
|
---|
1710 | ret = add_content_type(&part->curlheaders, contenttype, boundary);
|
---|
1711 | if(ret)
|
---|
1712 | return ret;
|
---|
1713 | }
|
---|
1714 |
|
---|
1715 | /* Content-Transfer-Encoding header. */
|
---|
1716 | if(!search_header(part->userheaders, "Content-Transfer-Encoding")) {
|
---|
1717 | if(part->encoder)
|
---|
1718 | cte = part->encoder->name;
|
---|
1719 | else if(contenttype && strategy == MIMESTRATEGY_MAIL &&
|
---|
1720 | part->kind != MIMEKIND_MULTIPART)
|
---|
1721 | cte = "8bit";
|
---|
1722 | if(cte) {
|
---|
1723 | ret = Curl_mime_add_header(&part->curlheaders,
|
---|
1724 | "Content-Transfer-Encoding: %s", cte);
|
---|
1725 | if(ret)
|
---|
1726 | return ret;
|
---|
1727 | }
|
---|
1728 | }
|
---|
1729 |
|
---|
1730 | /* If we were reading curl-generated headers, restart with new ones (this
|
---|
1731 | should not occur). */
|
---|
1732 | if(part->state.state == MIMESTATE_CURLHEADERS)
|
---|
1733 | mimesetstate(&part->state, MIMESTATE_CURLHEADERS, part->curlheaders);
|
---|
1734 |
|
---|
1735 | /* Process subparts. */
|
---|
1736 | if(part->kind == MIMEKIND_MULTIPART && mime) {
|
---|
1737 | curl_mimepart *subpart;
|
---|
1738 |
|
---|
1739 | disposition = NULL;
|
---|
1740 | if(strcasecompare(contenttype, "multipart/form-data"))
|
---|
1741 | disposition = "form-data";
|
---|
1742 | for(subpart = mime->firstpart; subpart; subpart = subpart->nextpart) {
|
---|
1743 | ret = Curl_mime_prepare_headers(subpart, NULL, disposition, strategy);
|
---|
1744 | if(ret)
|
---|
1745 | return ret;
|
---|
1746 | }
|
---|
1747 | }
|
---|
1748 | return ret;
|
---|
1749 | }
|
---|
1750 |
|
---|
1751 | #else /* !CURL_DISABLE_HTTP || !CURL_DISABLE_SMTP || !CURL_DISABLE_IMAP */
|
---|
1752 |
|
---|
1753 | /* Mime not compiled in: define stubs for externally-referenced functions. */
|
---|
1754 | curl_mime *curl_mime_init(CURL *easy)
|
---|
1755 | {
|
---|
1756 | (void) easy;
|
---|
1757 | return NULL;
|
---|
1758 | }
|
---|
1759 |
|
---|
1760 | void curl_mime_free(curl_mime *mime)
|
---|
1761 | {
|
---|
1762 | (void) mime;
|
---|
1763 | }
|
---|
1764 |
|
---|
1765 | curl_mimepart *curl_mime_addpart(curl_mime *mime)
|
---|
1766 | {
|
---|
1767 | (void) mime;
|
---|
1768 | return NULL;
|
---|
1769 | }
|
---|
1770 |
|
---|
1771 | CURLcode curl_mime_name(curl_mimepart *part, const char *name)
|
---|
1772 | {
|
---|
1773 | (void) part;
|
---|
1774 | (void) name;
|
---|
1775 | return CURLE_NOT_BUILT_IN;
|
---|
1776 | }
|
---|
1777 |
|
---|
1778 | CURLcode curl_mime_filename(curl_mimepart *part, const char *filename)
|
---|
1779 | {
|
---|
1780 | (void) part;
|
---|
1781 | (void) filename;
|
---|
1782 | return CURLE_NOT_BUILT_IN;
|
---|
1783 | }
|
---|
1784 |
|
---|
1785 | CURLcode curl_mime_type(curl_mimepart *part, const char *mimetype)
|
---|
1786 | {
|
---|
1787 | (void) part;
|
---|
1788 | (void) mimetype;
|
---|
1789 | return CURLE_NOT_BUILT_IN;
|
---|
1790 | }
|
---|
1791 |
|
---|
1792 | CURLcode curl_mime_encoder(curl_mimepart *part, const char *encoding)
|
---|
1793 | {
|
---|
1794 | (void) part;
|
---|
1795 | (void) encoding;
|
---|
1796 | return CURLE_NOT_BUILT_IN;
|
---|
1797 | }
|
---|
1798 |
|
---|
1799 | CURLcode curl_mime_data(curl_mimepart *part,
|
---|
1800 | const char *data, size_t datasize)
|
---|
1801 | {
|
---|
1802 | (void) part;
|
---|
1803 | (void) data;
|
---|
1804 | (void) datasize;
|
---|
1805 | return CURLE_NOT_BUILT_IN;
|
---|
1806 | }
|
---|
1807 |
|
---|
1808 | CURLcode curl_mime_filedata(curl_mimepart *part, const char *filename)
|
---|
1809 | {
|
---|
1810 | (void) part;
|
---|
1811 | (void) filename;
|
---|
1812 | return CURLE_NOT_BUILT_IN;
|
---|
1813 | }
|
---|
1814 |
|
---|
1815 | CURLcode curl_mime_data_cb(curl_mimepart *part,
|
---|
1816 | curl_off_t datasize,
|
---|
1817 | curl_read_callback readfunc,
|
---|
1818 | curl_seek_callback seekfunc,
|
---|
1819 | curl_free_callback freefunc,
|
---|
1820 | void *arg)
|
---|
1821 | {
|
---|
1822 | (void) part;
|
---|
1823 | (void) datasize;
|
---|
1824 | (void) readfunc;
|
---|
1825 | (void) seekfunc;
|
---|
1826 | (void) freefunc;
|
---|
1827 | (void) arg;
|
---|
1828 | return CURLE_NOT_BUILT_IN;
|
---|
1829 | }
|
---|
1830 |
|
---|
1831 | CURLcode curl_mime_subparts(curl_mimepart *part, curl_mime *subparts)
|
---|
1832 | {
|
---|
1833 | (void) part;
|
---|
1834 | (void) subparts;
|
---|
1835 | return CURLE_NOT_BUILT_IN;
|
---|
1836 | }
|
---|
1837 |
|
---|
1838 | CURLcode curl_mime_headers(curl_mimepart *part,
|
---|
1839 | struct curl_slist *headers, int take_ownership)
|
---|
1840 | {
|
---|
1841 | (void) part;
|
---|
1842 | (void) headers;
|
---|
1843 | (void) take_ownership;
|
---|
1844 | return CURLE_NOT_BUILT_IN;
|
---|
1845 | }
|
---|
1846 |
|
---|
1847 | void Curl_mime_initpart(curl_mimepart *part, struct Curl_easy *easy)
|
---|
1848 | {
|
---|
1849 | (void) part;
|
---|
1850 | (void) easy;
|
---|
1851 | }
|
---|
1852 |
|
---|
1853 | void Curl_mime_cleanpart(curl_mimepart *part)
|
---|
1854 | {
|
---|
1855 | (void) part;
|
---|
1856 | }
|
---|
1857 |
|
---|
1858 | CURLcode Curl_mime_set_subparts(curl_mimepart *part,
|
---|
1859 | curl_mime *subparts, int take_ownership)
|
---|
1860 | {
|
---|
1861 | (void) part;
|
---|
1862 | (void) subparts;
|
---|
1863 | (void) take_ownership;
|
---|
1864 | return CURLE_NOT_BUILT_IN;
|
---|
1865 | }
|
---|
1866 |
|
---|
1867 | CURLcode Curl_mime_prepare_headers(curl_mimepart *part,
|
---|
1868 | const char *contenttype,
|
---|
1869 | const char *disposition,
|
---|
1870 | enum mimestrategy strategy)
|
---|
1871 | {
|
---|
1872 | (void) part;
|
---|
1873 | (void) contenttype;
|
---|
1874 | (void) disposition;
|
---|
1875 | (void) strategy;
|
---|
1876 | return CURLE_NOT_BUILT_IN;
|
---|
1877 | }
|
---|
1878 |
|
---|
1879 | curl_off_t Curl_mime_size(curl_mimepart *part)
|
---|
1880 | {
|
---|
1881 | (void) part;
|
---|
1882 | return (curl_off_t) -1;
|
---|
1883 | }
|
---|
1884 |
|
---|
1885 | size_t Curl_mime_read(char *buffer, size_t size, size_t nitems, void *instream)
|
---|
1886 | {
|
---|
1887 | (void) buffer;
|
---|
1888 | (void) size;
|
---|
1889 | (void) nitems;
|
---|
1890 | (void) instream;
|
---|
1891 | return 0;
|
---|
1892 | }
|
---|
1893 |
|
---|
1894 | CURLcode Curl_mime_rewind(curl_mimepart *part)
|
---|
1895 | {
|
---|
1896 | (void) part;
|
---|
1897 | return CURLE_NOT_BUILT_IN;
|
---|
1898 | }
|
---|
1899 |
|
---|
1900 | /* VARARGS2 */
|
---|
1901 | CURLcode Curl_mime_add_header(struct curl_slist **slp, const char *fmt, ...)
|
---|
1902 | {
|
---|
1903 | (void) slp;
|
---|
1904 | (void) fmt;
|
---|
1905 | return CURLE_NOT_BUILT_IN;
|
---|
1906 | }
|
---|
1907 |
|
---|
1908 | #endif /* !CURL_DISABLE_HTTP || !CURL_DISABLE_SMTP || !CURL_DISABLE_IMAP */
|
---|