ceph/src/civetweb/examples/post/post.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include "civetweb.h"
   4
   5 static const char *html_form =
   6     "<html><body>POST example."
   7     "<form method=\"POST\" action=\"/handle_post_request\">"
   8     "Input 1: <input type=\"text\" name=\"input_1\" /> <br/>"
   9     "Input 2: <input type=\"text\" name=\"input_2\" /> <br/>"
  10     "<input type=\"submit\" />"
  11     "</form></body></html>";
  12
  13 static int begin_request_handler(struct mg_connection *conn)
  14 {
  15     const struct mg_request_info *ri = mg_get_request_info(conn);
  16     char post_data[1024], input1[sizeof(post_data)], input2[sizeof(post_data)];
  17     int post_data_len;
  18
  19     if (!strcmp(ri->uri, "/handle_post_request")) {
  20         // User has submitted a form, show submitted data and a variable value
  21         post_data_len = mg_read(conn, post_data, sizeof(post_data));
  22
  23         // Parse form data. input1 and input2 are guaranteed to be NUL-terminated
  24         mg_get_var(post_data, post_data_len, "input_1", input1, sizeof(input1));
  25         mg_get_var(post_data, post_data_len, "input_2", input2, sizeof(input2));
  26
  27         // Send reply to the client, showing submitted form values.
  28         mg_printf(conn, "HTTP/1.0 200 OK\r\n"
  29                   "Content-Type: text/plain\r\n\r\n"
  30                   "Submitted data: [%.*s]\n"
  31                   "Submitted data length: %d bytes\n"
  32                   "input_1: [%s]\n"
  33                   "input_2: [%s]\n",
  34                   post_data_len, post_data, post_data_len, input1, input2);
  35     } else {
  36         // Show HTML form.
  37         mg_printf(conn, "HTTP/1.0 200 OK\r\n"
  38                   "Content-Length: %d\r\n"
  39                   "Content-Type: text/html\r\n\r\n%s",
  40                   (int) strlen(html_form), html_form);
  41     }
  42     return 1;  // Mark request as processed
  43 }
  44
  45 int main(void)
  46 {
  47     struct mg_context *ctx;
  48     const char *options[] = {"listening_ports", "8080", NULL};
  49     struct mg_callbacks callbacks;
  50
  51     memset(&callbacks, 0, sizeof(callbacks));
  52     callbacks.begin_request = begin_request_handler;
  53     ctx = mg_start(&callbacks, NULL, options);
  54     getchar();  // Wait until user hits "enter"
  55     mg_stop(ctx);
  56
  57     return 0;
  58 }