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 | #include "tool_setup.h"
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23 |
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24 | #include "slist_wc.h"
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25 |
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26 | #ifndef CURL_DISABLE_LIBCURL_OPTION
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27 |
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28 | #define ENABLE_CURLX_PRINTF
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29 | /* use our own printf() functions */
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30 | #include "curlx.h"
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31 |
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32 | #include "tool_cfgable.h"
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33 | #include "tool_easysrc.h"
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34 | #include "tool_msgs.h"
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35 |
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36 | #include "memdebug.h" /* keep this as LAST include */
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37 |
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38 | /* global variable definitions, for easy-interface source code generation */
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39 |
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40 | struct slist_wc *easysrc_decl = NULL; /* Variable declarations */
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41 | struct slist_wc *easysrc_data = NULL; /* Build slists, forms etc. */
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42 | struct slist_wc *easysrc_code = NULL; /* Setopt calls */
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43 | struct slist_wc *easysrc_toohard = NULL; /* Unconvertible setopt */
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44 | struct slist_wc *easysrc_clean = NULL; /* Clean up allocated data */
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45 | int easysrc_mime_count = 0;
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46 | int easysrc_slist_count = 0;
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47 |
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48 | static const char *const srchead[]={
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49 | "/********* Sample code generated by the curl command line tool **********",
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50 | " * All curl_easy_setopt() options are documented at:",
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51 | " * https://curl.haxx.se/libcurl/c/curl_easy_setopt.html",
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52 | " ************************************************************************/",
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53 | "#include <curl/curl.h>",
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54 | "",
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55 | "int main(int argc, char *argv[])",
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56 | "{",
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57 | " CURLcode ret;",
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58 | " CURL *hnd;",
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59 | NULL
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60 | };
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61 | /* easysrc_decl declarations come here */
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62 | /* easysrc_data initialisations come here */
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63 | /* easysrc_code statements come here */
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64 | static const char *const srchard[]={
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65 | "/* Here is a list of options the curl code used that cannot get generated",
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66 | " as source easily. You may select to either not use them or implement",
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67 | " them yourself.",
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68 | "",
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69 | NULL
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70 | };
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71 | static const char *const srcend[]={
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72 | "",
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73 | " return (int)ret;",
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74 | "}",
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75 | "/**** End of sample code ****/",
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76 | NULL
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77 | };
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78 |
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79 | /* Clean up all source code if we run out of memory */
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80 | static void easysrc_free(void)
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81 | {
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82 | slist_wc_free_all(easysrc_decl);
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83 | easysrc_decl = NULL;
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84 | slist_wc_free_all(easysrc_data);
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85 | easysrc_data = NULL;
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86 | slist_wc_free_all(easysrc_code);
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87 | easysrc_code = NULL;
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88 | slist_wc_free_all(easysrc_toohard);
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89 | easysrc_toohard = NULL;
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90 | slist_wc_free_all(easysrc_clean);
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91 | easysrc_clean = NULL;
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92 | }
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93 |
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94 | /* Add a source line to the main code or remarks */
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95 | CURLcode easysrc_add(struct slist_wc **plist, const char *line)
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96 | {
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97 | CURLcode ret = CURLE_OK;
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98 | struct slist_wc *list = slist_wc_append(*plist, line);
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99 | if(!list) {
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100 | easysrc_free();
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101 | ret = CURLE_OUT_OF_MEMORY;
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102 | }
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103 | else
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104 | *plist = list;
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105 | return ret;
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106 | }
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107 |
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108 | CURLcode easysrc_addf(struct slist_wc **plist, const char *fmt, ...)
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109 | {
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110 | CURLcode ret;
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111 | char *bufp;
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112 | va_list ap;
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113 | va_start(ap, fmt);
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114 | bufp = curlx_mvaprintf(fmt, ap);
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115 | va_end(ap);
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116 | if(! bufp) {
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117 | ret = CURLE_OUT_OF_MEMORY;
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118 | }
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119 | else {
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120 | ret = easysrc_add(plist, bufp);
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121 | curl_free(bufp);
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122 | }
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123 | return ret;
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124 | }
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125 |
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126 | #define CHKRET(v) do {CURLcode ret = (v); if(ret) return ret;} WHILE_FALSE
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127 |
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128 | CURLcode easysrc_init(void)
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129 | {
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130 | CHKRET(easysrc_add(&easysrc_code,
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131 | "hnd = curl_easy_init();"));
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132 | return CURLE_OK;
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133 | }
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134 |
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135 | CURLcode easysrc_perform(void)
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136 | {
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137 | /* Note any setopt calls which we could not convert */
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138 | if(easysrc_toohard) {
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139 | int i;
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140 | struct curl_slist *ptr;
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141 | const char *c;
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142 | CHKRET(easysrc_add(&easysrc_code, ""));
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143 | /* Preamble comment */
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144 | for(i = 0; ((c = srchard[i]) != NULL); i++)
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145 | CHKRET(easysrc_add(&easysrc_code, c));
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146 | /* Each unconverted option */
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147 | if(easysrc_toohard) {
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148 | for(ptr = easysrc_toohard->first; ptr; ptr = ptr->next)
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149 | CHKRET(easysrc_add(&easysrc_code, ptr->data));
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150 | }
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151 | CHKRET(easysrc_add(&easysrc_code, ""));
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152 | CHKRET(easysrc_add(&easysrc_code, "*/"));
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153 |
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154 | slist_wc_free_all(easysrc_toohard);
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155 | easysrc_toohard = NULL;
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156 | }
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157 |
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158 | CHKRET(easysrc_add(&easysrc_code, ""));
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159 | CHKRET(easysrc_add(&easysrc_code, "ret = curl_easy_perform(hnd);"));
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160 | CHKRET(easysrc_add(&easysrc_code, ""));
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161 |
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162 | return CURLE_OK;
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163 | }
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164 |
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165 | CURLcode easysrc_cleanup(void)
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166 | {
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167 | CHKRET(easysrc_add(&easysrc_code, "curl_easy_cleanup(hnd);"));
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168 | CHKRET(easysrc_add(&easysrc_code, "hnd = NULL;"));
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169 |
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170 | return CURLE_OK;
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171 | }
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172 |
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173 | void dumpeasysrc(struct GlobalConfig *config)
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174 | {
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175 | struct curl_slist *ptr;
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176 | char *o = config->libcurl;
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177 |
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178 | FILE *out;
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179 | bool fopened = FALSE;
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180 | if(strcmp(o, "-")) {
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181 | out = fopen(o, FOPEN_WRITETEXT);
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182 | fopened = TRUE;
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183 | }
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184 | else
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185 | out = stdout;
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186 | if(!out)
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187 | warnf(config, "Failed to open %s to write libcurl code!\n", o);
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188 | else {
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189 | int i;
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190 | const char *c;
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191 |
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192 | for(i = 0; ((c = srchead[i]) != NULL); i++)
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193 | fprintf(out, "%s\n", c);
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194 |
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195 | /* Declare variables used for complex setopt values */
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196 | if(easysrc_decl) {
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197 | for(ptr = easysrc_decl->first; ptr; ptr = ptr->next)
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198 | fprintf(out, " %s\n", ptr->data);
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199 | }
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200 |
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201 | /* Set up complex values for setopt calls */
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202 | if(easysrc_data) {
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203 | fprintf(out, "\n");
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204 |
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205 | for(ptr = easysrc_data->first; ptr; ptr = ptr->next)
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206 | fprintf(out, " %s\n", ptr->data);
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207 | }
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208 |
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209 | fprintf(out, "\n");
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210 | if(easysrc_code) {
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211 | for(ptr = easysrc_code->first; ptr; ptr = ptr->next) {
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212 | if(ptr->data[0]) {
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213 | fprintf(out, " %s\n", ptr->data);
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214 | }
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215 | else {
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216 | fprintf(out, "\n");
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217 | }
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218 | }
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219 | }
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220 |
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221 | if(easysrc_clean) {
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222 | for(ptr = easysrc_clean->first; ptr; ptr = ptr->next)
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223 | fprintf(out, " %s\n", ptr->data);
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224 | }
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225 |
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226 | for(i = 0; ((c = srcend[i]) != NULL); i++)
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227 | fprintf(out, "%s\n", c);
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228 |
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229 | if(fopened)
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230 | fclose(out);
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231 | }
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232 |
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233 | easysrc_free();
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234 | }
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235 |
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236 | #endif /* CURL_DISABLE_LIBCURL_OPTION */
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