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- #include <stdio.h>
- #include <string.h>
- #include "civetweb.h"
- static const char *html_form =
- "<html><body>POST example."
- "<form method=\"POST\" action=\"/handle_post_request\">"
- "Input 1: <input type=\"text\" name=\"input_1\" /> <br/>"
- "Input 2: <input type=\"text\" name=\"input_2\" /> <br/>"
- "<input type=\"submit\" />"
- "</form></body></html>";
- static int begin_request_handler(struct mg_connection *conn) {
- const struct mg_request_info *ri = mg_get_request_info(conn);
- char post_data[1024], input1[sizeof(post_data)], input2[sizeof(post_data)];
- int post_data_len;
- if (!strcmp(ri->uri, "/handle_post_request")) {
- // User has submitted a form, show submitted data and a variable value
- post_data_len = mg_read(conn, post_data, sizeof(post_data));
- // Parse form data. input1 and input2 are guaranteed to be NUL-terminated
- mg_get_var(post_data, post_data_len, "input_1", input1, sizeof(input1));
- mg_get_var(post_data, post_data_len, "input_2", input2, sizeof(input2));
- // Send reply to the client, showing submitted form values.
- mg_printf(conn, "HTTP/1.0 200 OK\r\n"
- "Content-Type: text/plain\r\n\r\n"
- "Submitted data: [%.*s]\n"
- "Submitted data length: %d bytes\n"
- "input_1: [%s]\n"
- "input_2: [%s]\n",
- post_data_len, post_data, post_data_len, input1, input2);
- } else {
- // Show HTML form.
- mg_printf(conn, "HTTP/1.0 200 OK\r\n"
- "Content-Length: %d\r\n"
- "Content-Type: text/html\r\n\r\n%s",
- (int) strlen(html_form), html_form);
- }
- return 1; // Mark request as processed
- }
- int main(void) {
- struct mg_context *ctx;
- const char *options[] = {"listening_ports", "8080", NULL};
- struct mg_callbacks callbacks;
- memset(&callbacks, 0, sizeof(callbacks));
- callbacks.begin_request = begin_request_handler;
- ctx = mg_start(&callbacks, NULL, options);
- getchar(); // Wait until user hits "enter"
- mg_stop(ctx);
- return 0;
- }
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