📄 show_vars.c
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#include <stdio.h>#include <cgi.h>int main(void){ // formvars is a structure type used to manage session and cgi // linked lists. It have 'name' and 'value' properties. formvars *sess_vars; char *data; cgi_init(); cgi_session_start(); cgi_process_form(); // The user is trying to unregister some variables? if (cgi_param("action")) { while ((data = cgi_param_multiple("unregister"))) cgi_session_unregister_var(data); } cgi_init_headers(); puts("" "<html>" "<head><title>LibCGI session example - variables</title>" "</head>" "<body>" ""); cgi_include("session_ex1_desc.html"); puts("" "<table width='70%' align='center'>" "<tr>" "<td>" ""); if (!cgi_session_var_exists("logged")) { puts("" "<font face='arial, verdana' size='2'>You are not logged. To see this page contents, you" "must be logged. Please <a href='login.cgi'>click here</a> to go to login page." "</font>" ""); } else { // show the registered session variables to user // sess_list_start is a global variable that contains // all session variables information, such name and value sess_vars = sess_list_start; puts("<form action='show_vars.cgi' method='post'>"); while (sess_vars) { printf("" "<font face='verdana, arial' size='2' color='#000000'>Variable: <b>%s</b></font>" "<font face='verdana, arial' size='2' color='#000000'>Value: <b>%s</b></font> " "<input type='checkbox' name='unregister' value='%s'>Unregister? <br>" "", sess_vars->name, sess_vars->value, sess_vars->name); sess_vars = sess_vars->next; } puts("" "<br><br>" "<input type='submit' name='action' value='Unregister selected'>" "</form>" ""); } puts("</td></tr>"); cgi_include("topbar.htm"); puts("" "</table>" "</body>" "</html>" ""); cgi_end(); return 0;}⌨️ 快捷键说明
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