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 - 2012, 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 | #include "tool_setup.h"
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23 |
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24 | #ifdef CURL_DOES_CONVERSIONS
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25 |
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26 | #ifdef HAVE_ICONV
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27 | # include <iconv.h>
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28 | #endif
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29 |
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30 | #include "tool_convert.h"
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31 |
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32 | #include "memdebug.h" /* keep this as LAST include */
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33 |
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34 | #ifdef HAVE_ICONV
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35 |
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36 | /* curl tool iconv conversion descriptors */
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37 | static iconv_t inbound_cd = (iconv_t)-1;
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38 | static iconv_t outbound_cd = (iconv_t)-1;
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39 |
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40 | /* set default codesets for iconv */
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41 | #ifndef CURL_ICONV_CODESET_OF_NETWORK
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42 | # define CURL_ICONV_CODESET_OF_NETWORK "ISO8859-1"
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43 | #endif
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44 |
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45 | /*
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46 | * convert_to_network() is a curl tool function to convert
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47 | * from the host encoding to ASCII on non-ASCII platforms.
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48 | */
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49 | CURLcode convert_to_network(char *buffer, size_t length)
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50 | {
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51 | /* translate from the host encoding to the network encoding */
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52 | char *input_ptr, *output_ptr;
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53 | size_t res, in_bytes, out_bytes;
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54 |
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55 | /* open an iconv conversion descriptor if necessary */
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56 | if(outbound_cd == (iconv_t)-1) {
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57 | outbound_cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK,
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58 | CURL_ICONV_CODESET_OF_HOST);
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59 | if(outbound_cd == (iconv_t)-1) {
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60 | return CURLE_CONV_FAILED;
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61 | }
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62 | }
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63 | /* call iconv */
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64 | input_ptr = output_ptr = buffer;
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65 | in_bytes = out_bytes = length;
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66 | res = iconv(outbound_cd, &input_ptr, &in_bytes,
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67 | &output_ptr, &out_bytes);
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68 | if((res == (size_t)-1) || (in_bytes != 0)) {
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69 | return CURLE_CONV_FAILED;
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70 | }
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71 |
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72 | return CURLE_OK;
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73 | }
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74 |
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75 | /*
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76 | * convert_from_network() is a curl tool function
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77 | * for performing ASCII conversions on non-ASCII platforms.
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78 | */
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79 | CURLcode convert_from_network(char *buffer, size_t length)
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80 | {
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81 | /* translate from the network encoding to the host encoding */
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82 | char *input_ptr, *output_ptr;
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83 | size_t res, in_bytes, out_bytes;
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84 |
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85 | /* open an iconv conversion descriptor if necessary */
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86 | if(inbound_cd == (iconv_t)-1) {
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87 | inbound_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
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88 | CURL_ICONV_CODESET_OF_NETWORK);
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89 | if(inbound_cd == (iconv_t)-1) {
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90 | return CURLE_CONV_FAILED;
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91 | }
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92 | }
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93 | /* call iconv */
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94 | input_ptr = output_ptr = buffer;
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95 | in_bytes = out_bytes = length;
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96 | res = iconv(inbound_cd, &input_ptr, &in_bytes,
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97 | &output_ptr, &out_bytes);
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98 | if((res == (size_t)-1) || (in_bytes != 0)) {
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99 | return CURLE_CONV_FAILED;
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100 | }
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101 |
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102 | return CURLE_OK;
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103 | }
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104 |
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105 | void convert_cleanup(void)
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106 | {
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107 | /* close iconv conversion descriptors */
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108 | if(inbound_cd != (iconv_t)-1)
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109 | (void)iconv_close(inbound_cd);
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110 | if(outbound_cd != (iconv_t)-1)
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111 | (void)iconv_close(outbound_cd);
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112 | }
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113 |
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114 | #endif /* HAVE_ICONV */
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115 |
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116 | char convert_char(curl_infotype infotype, char this_char)
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117 | {
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118 | /* determine how this specific character should be displayed */
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119 | switch(infotype) {
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120 | case CURLINFO_DATA_IN:
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121 | case CURLINFO_DATA_OUT:
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122 | case CURLINFO_SSL_DATA_IN:
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123 | case CURLINFO_SSL_DATA_OUT:
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124 | /* data, treat as ASCII */
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125 | if((this_char >= 0x20) && (this_char < 0x7f)) {
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126 | /* printable ASCII hex value: convert to host encoding */
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127 | (void)convert_from_network(&this_char, 1);
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128 | }
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129 | else {
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130 | /* non-printable ASCII, use a replacement character */
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131 | return UNPRINTABLE_CHAR;
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132 | }
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133 | /* fall through to default */
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134 | default:
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135 | /* treat as host encoding */
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136 | if(ISPRINT(this_char)
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137 | && (this_char != '\t')
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138 | && (this_char != '\r')
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139 | && (this_char != '\n')) {
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140 | /* printable characters excluding tabs and line end characters */
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141 | return this_char;
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142 | }
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143 | break;
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144 | }
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145 | /* non-printable, use a replacement character */
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146 | return UNPRINTABLE_CHAR;
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147 | }
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148 |
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149 | #endif /* CURL_DOES_CONVERSIONS */
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150 |
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