1 | /* Change this if the SERVER_NAME environment variable does not report |
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2 | the true name of your web server. */ |
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3 | #if 1 |
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4 | #define SERVER_NAME cgiServerName |
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5 | #endif |
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6 | #if 0 |
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7 | #define SERVER_NAME "www.boutell.com" |
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8 | #endif |
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9 | |
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10 | /* You may need to change this, particularly under Windows; |
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11 | it is a reasonable guess as to an acceptable place to |
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12 | store a saved environment in order to test that feature. |
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13 | If that feature is not important to you, you needn't |
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14 | concern yourself with this. */ |
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15 | |
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16 | #ifdef WIN32 |
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17 | #define SAVED_ENVIRONMENT "c:\\cgicsave.env" |
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18 | #else |
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19 | #define SAVED_ENVIRONMENT "/tmp/cgicsave.env" |
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20 | #endif /* WIN32 */ |
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21 | |
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22 | #include <stdio.h> |
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23 | #include "cgic.h" |
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24 | #include <string.h> |
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25 | #include <stdlib.h> |
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26 | |
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27 | void HandleSubmit(); |
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28 | void ShowForm(); |
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29 | void CookieSet(); |
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30 | void Name(); |
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31 | void Address(); |
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32 | void Hungry(); |
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33 | void Temperature(); |
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34 | void Frogs(); |
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35 | void Color(); |
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36 | void Flavors(); |
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37 | void NonExButtons(); |
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38 | void RadioButtons(); |
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39 | void File(); |
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40 | void Entries(); |
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41 | void Cookies(); |
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42 | void LoadEnvironment(); |
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43 | void SaveEnvironment(); |
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44 | |
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45 | int cgiMain() { |
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46 | #ifdef DEBUG |
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47 | LoadEnvironment(); |
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48 | #endif /* DEBUG */ |
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49 | /* Load a previously saved CGI scenario if that button |
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50 | has been pressed. */ |
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51 | if (cgiFormSubmitClicked((char *)"loadenvironment") == cgiFormSuccess) { |
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52 | LoadEnvironment(); |
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53 | } |
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54 | /* Set any new cookie requested. Must be done *before* |
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55 | outputting the content type. */ |
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56 | CookieSet(); |
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57 | /* Send the content type, letting the browser know this is HTML */ |
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58 | cgiHeaderContentType((char *)"text/html"); |
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59 | /* Top of the page */ |
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60 | fprintf(cgiOut, "<HTML><HEAD>\n"); |
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61 | fprintf(cgiOut, "<TITLE>cgic test</TITLE></HEAD>\n"); |
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62 | fprintf(cgiOut, "<BODY><H1>cgic test</H1>\n"); |
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63 | /* If a submit button has already been clicked, act on the |
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64 | submission of the form. */ |
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65 | if ((cgiFormSubmitClicked((char *)"testcgic") == cgiFormSuccess) || |
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66 | cgiFormSubmitClicked((char *)"saveenvironment") == cgiFormSuccess) |
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67 | { |
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68 | HandleSubmit(); |
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69 | fprintf(cgiOut, "<hr>\n"); |
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70 | } |
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71 | /* Now show the form */ |
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72 | ShowForm(); |
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73 | /* Finish up the page */ |
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74 | fprintf(cgiOut, "</BODY></HTML>\n"); |
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75 | return 0; |
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76 | } |
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77 | |
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78 | void HandleSubmit() |
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79 | { |
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80 | Name(); |
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81 | Address(); |
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82 | Hungry(); |
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83 | Temperature(); |
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84 | Frogs(); |
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85 | Color(); |
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86 | Flavors(); |
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87 | NonExButtons(); |
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88 | RadioButtons(); |
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89 | File(); |
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90 | Entries(); |
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91 | Cookies(); |
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92 | /* The saveenvironment button, in addition to submitting the form, |
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93 | also saves the resulting CGI scenario to disk for later |
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94 | replay with the 'load saved environment' button. */ |
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95 | if (cgiFormSubmitClicked((char *)"saveenvironment") == cgiFormSuccess) { |
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96 | SaveEnvironment(); |
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97 | } |
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98 | } |
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99 | |
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100 | void Name() { |
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101 | char name[81]; |
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102 | cgiFormStringNoNewlines((char *)"name", name, 81); |
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103 | fprintf(cgiOut, "Name: "); |
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104 | cgiHtmlEscape(name); |
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105 | fprintf(cgiOut, "<BR>\n"); |
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106 | } |
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107 | |
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108 | void Address() { |
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109 | char address[241]; |
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110 | cgiFormString((char *)"address", address, 241); |
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111 | fprintf(cgiOut, "Address: <PRE>\n"); |
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112 | cgiHtmlEscape(address); |
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113 | fprintf(cgiOut, "</PRE>\n"); |
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114 | } |
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115 | |
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116 | void Hungry() { |
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117 | if (cgiFormCheckboxSingle((char *)"hungry") == cgiFormSuccess) { |
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118 | fprintf(cgiOut, "I'm Hungry!<BR>\n"); |
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119 | } else { |
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120 | fprintf(cgiOut, "I'm Not Hungry!<BR>\n"); |
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121 | } |
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122 | } |
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123 | |
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124 | void Temperature() { |
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125 | double temperature; |
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126 | cgiFormDoubleBounded((char *)"temperature", &temperature, 80.0, 120.0, 98.6); |
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127 | fprintf(cgiOut, "My temperature is %f.<BR>\n", temperature); |
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128 | } |
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129 | |
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130 | void Frogs() { |
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131 | int frogsEaten; |
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132 | cgiFormInteger((char *)"frogs", &frogsEaten, 0); |
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133 | fprintf(cgiOut, "I have eaten %d frogs.<BR>\n", frogsEaten); |
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134 | } |
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135 | |
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136 | char *colors[] = { |
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137 | (char *)"Red", |
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138 | (char *)"Green", |
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139 | (char *)"Blue" |
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140 | }; |
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141 | |
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142 | void Color() { |
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143 | int colorChoice; |
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144 | cgiFormSelectSingle((char *)"colors", colors, 3, &colorChoice, 0); |
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145 | fprintf(cgiOut, "I am: %s<BR>\n", colors[colorChoice]); |
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146 | } |
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147 | |
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148 | char *flavors[] = { |
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149 | (char *)"pistachio", |
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150 | (char *)"walnut", |
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151 | (char *)"creme" |
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152 | }; |
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153 | |
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154 | void Flavors() { |
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155 | int flavorChoices[3]; |
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156 | int i; |
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157 | int result; |
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158 | int invalid; |
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159 | result = cgiFormSelectMultiple((char *)"flavors", flavors, 3, |
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160 | flavorChoices, &invalid); |
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161 | if (result == cgiFormNotFound) { |
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162 | fprintf(cgiOut, "I hate ice cream.<p>\n"); |
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163 | } else { |
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164 | fprintf(cgiOut, "My favorite ice cream flavors are:\n"); |
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165 | fprintf(cgiOut, "<ul>\n"); |
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166 | for (i=0; (i < 3); i++) { |
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167 | if (flavorChoices[i]) { |
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168 | fprintf(cgiOut, "<li>%s\n", flavors[i]); |
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169 | } |
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170 | } |
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171 | fprintf(cgiOut, "</ul>\n"); |
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172 | } |
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173 | } |
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174 | |
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175 | char *ages[] = { |
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176 | (char *)"1", |
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177 | (char *)"2", |
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178 | (char *)"3", |
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179 | (char *)"4" |
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180 | }; |
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181 | |
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182 | void RadioButtons() { |
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183 | int ageChoice; |
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184 | char ageText[10]; |
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185 | /* Approach #1: check for one of several valid responses. |
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186 | Good if there are a short list of possible button values and |
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187 | you wish to enumerate them. */ |
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188 | cgiFormRadio((char *)"age", ages, 4, &ageChoice, 0); |
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189 | |
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190 | fprintf(cgiOut, "Age of Truck: %s (method #1)<BR>\n", |
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191 | ages[ageChoice]); |
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192 | |
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193 | /* Approach #2: just get the string. Good |
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194 | if the information is not critical or if you wish |
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195 | to verify it in some other way. Note that if |
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196 | the information is numeric, cgiFormInteger, |
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197 | cgiFormDouble, and related functions may be |
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198 | used instead of cgiFormString. */ |
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199 | cgiFormString((char *)"age", ageText, 10); |
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200 | |
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201 | fprintf(cgiOut, "Age of Truck: %s (method #2)<BR>\n", ageText); |
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202 | } |
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203 | |
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204 | char *votes[] = { |
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205 | (char *)"A", |
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206 | (char *)"B", |
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207 | (char *)"C", |
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208 | (char *)"D" |
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209 | }; |
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210 | |
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211 | void NonExButtons() { |
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212 | int voteChoices[4]; |
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213 | int i; |
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214 | int result; |
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215 | int invalid; |
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216 | |
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217 | char **responses; |
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218 | |
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219 | /* Method #1: check for valid votes. This is a good idea, |
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220 | since votes for nonexistent candidates should probably |
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221 | be discounted... */ |
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222 | fprintf(cgiOut, "Votes (method 1):<BR>\n"); |
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223 | result = cgiFormCheckboxMultiple((char *)"vote", votes, 4, |
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224 | voteChoices, &invalid); |
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225 | if (result == cgiFormNotFound) { |
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226 | fprintf(cgiOut, "I hate them all!<p>\n"); |
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227 | } else { |
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228 | fprintf(cgiOut, "My preferred candidates are:\n"); |
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229 | fprintf(cgiOut, "<ul>\n"); |
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230 | for (i=0; (i < 4); i++) { |
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231 | if (voteChoices[i]) { |
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232 | fprintf(cgiOut, "<li>%s\n", votes[i]); |
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233 | } |
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234 | } |
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235 | fprintf(cgiOut, "</ul>\n"); |
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236 | } |
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237 | |
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238 | /* Method #2: get all the names voted for and trust them. |
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239 | This is good if the form will change more often |
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240 | than the code and invented responses are not a danger |
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241 | or can be checked in some other way. */ |
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242 | fprintf(cgiOut, "Votes (method 2):<BR>\n"); |
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243 | result = cgiFormStringMultiple((char *)"vote", &responses); |
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244 | if (result == cgiFormNotFound) { |
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245 | fprintf(cgiOut, "I hate them all!<p>\n"); |
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246 | } else { |
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247 | int i = 0; |
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248 | fprintf(cgiOut, "My preferred candidates are:\n"); |
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249 | fprintf(cgiOut, "<ul>\n"); |
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250 | while (responses[i]) { |
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251 | fprintf(cgiOut, "<li>%s\n", responses[i]); |
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252 | i++; |
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253 | } |
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254 | fprintf(cgiOut, "</ul>\n"); |
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255 | } |
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256 | /* We must be sure to free the string array or a memory |
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257 | leak will occur. Simply calling free() would free |
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258 | the array but not the individual strings. The |
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259 | function cgiStringArrayFree() does the job completely. */ |
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260 | cgiStringArrayFree(responses); |
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261 | } |
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262 | |
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263 | void Entries() |
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264 | { |
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265 | char **array, **arrayStep; |
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266 | fprintf(cgiOut, "List of All Submitted Form Field Names:<p>\n"); |
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267 | if (cgiFormEntries(&array) != cgiFormSuccess) { |
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268 | return; |
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269 | } |
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270 | arrayStep = array; |
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271 | fprintf(cgiOut, "<ul>\n"); |
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272 | while (*arrayStep) { |
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273 | fprintf(cgiOut, "<li>"); |
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274 | cgiHtmlEscape(*arrayStep); |
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275 | fprintf(cgiOut, "\n"); |
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276 | arrayStep++; |
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277 | } |
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278 | fprintf(cgiOut, "</ul>\n"); |
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279 | cgiStringArrayFree(array); |
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280 | } |
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281 | |
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282 | void Cookies() |
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283 | { |
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284 | char **array, **arrayStep; |
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285 | char cname[1024], cvalue[1024]; |
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286 | fprintf(cgiOut, "Cookies Submitted On This Call, With Values (Many Browsers NEVER Submit Cookies):<p>\n"); |
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287 | if (cgiCookies(&array) != cgiFormSuccess) { |
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288 | return; |
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289 | } |
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290 | arrayStep = array; |
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291 | fprintf(cgiOut, "<table border=1>\n"); |
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292 | fprintf(cgiOut, "<tr><th>Cookie<th>Value</tr>\n"); |
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293 | while (*arrayStep) { |
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294 | char value[1024]; |
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295 | fprintf(cgiOut, "<tr>"); |
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296 | fprintf(cgiOut, "<td>"); |
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297 | cgiHtmlEscape(*arrayStep); |
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298 | fprintf(cgiOut, "<td>"); |
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299 | cgiCookieString(*arrayStep, value, sizeof(value)); |
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300 | cgiHtmlEscape(value); |
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301 | fprintf(cgiOut, "\n"); |
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302 | arrayStep++; |
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303 | } |
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304 | fprintf(cgiOut, "</table>\n"); |
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305 | cgiFormString((char *)"cname", cname, sizeof(cname)); |
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306 | cgiFormString((char *)"cvalue", cvalue, sizeof(cvalue)); |
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307 | if (strlen(cname)) { |
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308 | fprintf(cgiOut, "New Cookie Set On This Call:<p>\n"); |
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309 | fprintf(cgiOut, "Name: "); |
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310 | cgiHtmlEscape(cname); |
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311 | fprintf(cgiOut, "Value: "); |
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312 | cgiHtmlEscape(cvalue); |
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313 | fprintf(cgiOut, "<p>\n"); |
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314 | fprintf(cgiOut, "If your browser accepts cookies (many do not), this new cookie should appear in the above list the next time the form is submitted.<p>\n"); |
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315 | } |
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316 | cgiStringArrayFree(array); |
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317 | } |
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318 | |
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319 | void File() |
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320 | { |
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321 | cgiFilePtr file; |
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322 | char name[1024]; |
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323 | char contentType[1024]; |
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324 | char buffer[1024]; |
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325 | int size; |
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326 | int got; |
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327 | if (cgiFormFileName((char *)"file", name, sizeof(name)) != cgiFormSuccess) { |
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328 | printf("<p>No file was uploaded.<p>\n"); |
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329 | return; |
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330 | } |
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331 | fprintf(cgiOut, "The filename submitted was: "); |
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332 | cgiHtmlEscape(name); |
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333 | fprintf(cgiOut, (char *)"<p>\n"); |
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334 | cgiFormFileSize((char *)"file", &size); |
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335 | fprintf(cgiOut, "The file size was: %d bytes<p>\n", size); |
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336 | cgiFormFileContentType((char *)"file", contentType, sizeof(contentType)); |
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337 | fprintf(cgiOut, "The alleged content type of the file was: "); |
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338 | cgiHtmlEscape(contentType); |
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339 | fprintf(cgiOut, "<p>\n"); |
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340 | fprintf(cgiOut, "Of course, this is only the claim the browser made when uploading the file. Much like the filename, it cannot be trusted.<p>\n"); |
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341 | fprintf(cgiOut, "The file's contents are shown here:<p>\n"); |
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342 | if (cgiFormFileOpen((char *)"file", &file) != cgiFormSuccess) { |
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343 | fprintf(cgiOut, "Could not open the file.<p>\n"); |
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344 | return; |
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345 | } |
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346 | fprintf(cgiOut, "<pre>\n"); |
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347 | while (cgiFormFileRead(file, buffer, sizeof(buffer), &got) == |
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348 | cgiFormSuccess) |
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349 | { |
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350 | cgiHtmlEscapeData(buffer, got); |
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351 | } |
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352 | fprintf(cgiOut, "</pre>\n"); |
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353 | cgiFormFileClose(file); |
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354 | } |
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355 | |
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356 | void ShowForm() |
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357 | { |
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358 | fprintf(cgiOut, "<!-- 2.0: multipart/form-data is required for file uploads. -->"); |
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359 | fprintf(cgiOut, "<form method=\"POST\" enctype=\"multipart/form-data\" "); |
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360 | fprintf(cgiOut, " action=\""); |
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361 | cgiValueEscape(cgiScriptName); |
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362 | fprintf(cgiOut, "\">\n"); |
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363 | fprintf(cgiOut, "<p>\n"); |
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364 | fprintf(cgiOut, "Text Field containing Plaintext\n"); |
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365 | fprintf(cgiOut, "<p>\n"); |
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366 | fprintf(cgiOut, "<input type=\"text\" name=\"name\">Your Name\n"); |
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367 | fprintf(cgiOut, "<p>\n"); |
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368 | fprintf(cgiOut, "Multiple-Line Text Field\n"); |
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369 | fprintf(cgiOut, "<p>\n"); |
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370 | fprintf(cgiOut, "<textarea NAME=\"address\" ROWS=4 COLS=40>\n"); |
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371 | fprintf(cgiOut, "Default contents go here. \n"); |
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372 | fprintf(cgiOut, "</textarea>\n"); |
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373 | fprintf(cgiOut, "<p>\n"); |
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374 | fprintf(cgiOut, "Checkbox\n"); |
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375 | fprintf(cgiOut, "<p>\n"); |
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376 | fprintf(cgiOut, "<input type=\"checkbox\" name=\"hungry\" checked>Hungry\n"); |
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377 | fprintf(cgiOut, "<p>\n"); |
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378 | fprintf(cgiOut, "Text Field containing a Numeric Value\n"); |
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379 | fprintf(cgiOut, "<p>\n"); |
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380 | fprintf(cgiOut, "<input type=\"text\" name=\"temperature\" value=\"98.6\">\n"); |
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381 | fprintf(cgiOut, "Blood Temperature (80.0-120.0)\n"); |
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382 | fprintf(cgiOut, "<p>\n"); |
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383 | fprintf(cgiOut, "Text Field containing an Integer Value\n"); |
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384 | fprintf(cgiOut, "<p>\n"); |
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385 | fprintf(cgiOut, "<input type=\"text\" name=\"frogs\" value=\"1\">\n"); |
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386 | fprintf(cgiOut, "Frogs Eaten\n"); |
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387 | fprintf(cgiOut, "<p>\n"); |
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388 | fprintf(cgiOut, "Single-SELECT\n"); |
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389 | fprintf(cgiOut, "<br>\n"); |
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390 | fprintf(cgiOut, "<select name=\"colors\">\n"); |
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391 | fprintf(cgiOut, "<option value=\"Red\">Red\n"); |
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392 | fprintf(cgiOut, "<option value=\"Green\">Green\n"); |
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393 | fprintf(cgiOut, "<option value=\"Blue\">Blue\n"); |
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394 | fprintf(cgiOut, "</select>\n"); |
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395 | fprintf(cgiOut, "<br>\n"); |
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396 | fprintf(cgiOut, "Multiple-SELECT\n"); |
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397 | fprintf(cgiOut, "<br>\n"); |
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398 | fprintf(cgiOut, "<select name=\"flavors\" multiple>\n"); |
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399 | fprintf(cgiOut, "<option value=\"pistachio\">Pistachio\n"); |
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400 | fprintf(cgiOut, "<option value=\"walnut\">Walnut\n"); |
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401 | fprintf(cgiOut, "<option value=\"creme\">Creme\n"); |
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402 | fprintf(cgiOut, "</select>\n"); |
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403 | fprintf(cgiOut, "<p>Exclusive Radio Button Group: Age of Truck in Years\n"); |
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404 | fprintf(cgiOut, "<input type=\"radio\" name=\"age\" value=\"1\">1\n"); |
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405 | fprintf(cgiOut, "<input type=\"radio\" name=\"age\" value=\"2\">2\n"); |
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406 | fprintf(cgiOut, "<input type=\"radio\" name=\"age\" value=\"3\" checked>3\n"); |
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407 | fprintf(cgiOut, "<input type=\"radio\" name=\"age\" value=\"4\">4\n"); |
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408 | fprintf(cgiOut, "<p>Nonexclusive Checkbox Group: Voting for Zero through Four Candidates\n"); |
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409 | fprintf(cgiOut, "<input type=\"checkbox\" name=\"vote\" value=\"A\">A\n"); |
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410 | fprintf(cgiOut, "<input type=\"checkbox\" name=\"vote\" value=\"B\">B\n"); |
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411 | fprintf(cgiOut, "<input type=\"checkbox\" name=\"vote\" value=\"C\">C\n"); |
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412 | fprintf(cgiOut, "<input type=\"checkbox\" name=\"vote\" value=\"D\">D\n"); |
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413 | fprintf(cgiOut, "<p>File Upload:\n"); |
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414 | fprintf(cgiOut, "<input type=\"file\" name=\"file\" value=\"\"> (Select A Local File)\n"); |
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415 | fprintf(cgiOut, "<p>\n"); |
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416 | fprintf(cgiOut, "<p>Set a Cookie<p>\n"); |
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417 | fprintf(cgiOut, "<input name=\"cname\" value=\"\"> Cookie Name\n"); |
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418 | fprintf(cgiOut, "<input name=\"cvalue\" value=\"\"> Cookie Value<p>\n"); |
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419 | fprintf(cgiOut, "<input type=\"submit\" name=\"testcgic\" value=\"Submit Request\">\n"); |
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420 | fprintf(cgiOut, "<input type=\"reset\" value=\"Reset Request\">\n"); |
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421 | fprintf(cgiOut, "<p>Save the CGI Environment<p>\n"); |
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422 | fprintf(cgiOut, "Pressing this button will submit the form, then save the CGI environment so that it can be replayed later by calling cgiReadEnvironment (in a debugger, for instance).<p>\n"); |
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423 | fprintf(cgiOut, "<input type=\"submit\" name=\"saveenvironment\" value=\"Save Environment\">\n"); |
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424 | fprintf(cgiOut, "</form>\n"); |
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425 | } |
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426 | |
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427 | void CookieSet() |
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428 | { |
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429 | char cname[1024]; |
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430 | char cvalue[1024]; |
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431 | /* Must set cookies BEFORE calling cgiHeaderContentType */ |
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432 | cgiFormString((char *)"cname", cname, sizeof(cname)); |
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433 | cgiFormString((char *)"cvalue", cvalue, sizeof(cvalue)); |
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434 | if (strlen(cname)) { |
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435 | /* Cookie lives for one day (or until browser chooses |
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436 | to get rid of it, which may be immediately), |
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437 | and applies only to this script on this site. */ |
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438 | cgiHeaderCookieSetString(cname, cvalue, |
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439 | 86400, cgiScriptName, SERVER_NAME); |
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440 | } |
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441 | } |
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442 | |
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443 | void LoadEnvironment() |
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444 | { |
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445 | if (cgiReadEnvironment((char *)SAVED_ENVIRONMENT) != |
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446 | cgiEnvironmentSuccess) |
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447 | { |
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448 | cgiHeaderContentType((char *)"text/html"); |
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449 | fprintf(cgiOut, (char *)"<head>Error</head>\n"); |
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450 | fprintf(cgiOut, (char *)"<body><h1>Error</h1>\n"); |
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451 | fprintf(cgiOut, (char *)"cgiReadEnvironment failed. Most " |
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452 | "likely you have not saved an environment " |
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453 | "yet.\n"); |
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454 | exit(0); |
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455 | } |
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456 | /* OK, return now and show the results of the saved environment */ |
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457 | } |
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458 | |
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459 | void SaveEnvironment() |
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460 | { |
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461 | if (cgiWriteEnvironment((char *)SAVED_ENVIRONMENT) != |
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462 | cgiEnvironmentSuccess) |
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463 | { |
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464 | fprintf(cgiOut, "<p>cgiWriteEnvironment failed. Most " |
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465 | "likely %s is not a valid path or is not " |
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466 | "writable by the user that the CGI program " |
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467 | "is running as.<p>\n", SAVED_ENVIRONMENT); |
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468 | } else { |
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469 | fprintf(cgiOut, "<p>Environment saved. Click this button " |
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470 | "to restore it, playing back exactly the same " |
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471 | "scenario: " |
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472 | "<form method=POST action=\""); |
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473 | cgiValueEscape(cgiScriptName); |
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474 | fprintf(cgiOut, "\">" |
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475 | "<input type=\"submit\" " |
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476 | "value=\"Load Environment\" " |
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477 | "name=\"loadenvironment\"></form><p>\n"); |
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478 | } |
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479 | } |
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480 | |
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