First fully featured prototype
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D12878639B090D90
97
src/main.c
97
src/main.c
@ -7,14 +7,22 @@
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#include "drivers/unix_fs/unix_fs_driver.h"
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#include <stdlib.h>
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#include <time.h>
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#define COMMENTS_PER_PAGE 20
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#define MAX_NAME 1024
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#define MAX_COMMENT_SIZE 4096
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#define QMENTS_PATH "qments-storage"
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#define DRIVER_DATA { QMENTS_PATH }
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#define DRIVER unix_fs_driver
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int
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page_by_id(int id)
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{
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return id / COMMENTS_PER_PAGE + 1;
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}
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void
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fct_callback(char character, void *arg)
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{
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@ -26,15 +34,22 @@ render_comment(const Comment *comment)
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{
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StringBuffer _buffer, *buffer;
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char *retval;
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int rid;
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buffer = &_buffer;
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sb_init_empty(buffer);
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fctprintf(fct_callback, buffer, "<div class=\"comment\" id=comment_%d>\n", comment->id);
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fctprintf(fct_callback, buffer, "<div class=\"comment\" id=\"comment_%d\">\n", comment->id);
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/* begin header */
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fctprintf(fct_callback, buffer, "<div class=\"comment-header\">\n");
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fctprintf(fct_callback, buffer, "Posted by: %s\n", comment->header->user_displayname);
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rid = comment->header->reply_id;
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if (rid > 0) {
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fctprintf(fct_callback, buffer, "<a href=\"?page=%d#comment_%d\"> in reply to </a>", page_by_id(rid), rid);
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}
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fctprintf(fct_callback, buffer, "</div>\n");
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/* end header */
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@ -98,9 +113,22 @@ defer:
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return retval;
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}
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void
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print_submit_form()
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{
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fputs("<form action=\"\">\n"
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"<label>Your name:</label>\n"
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"<input type=\"text\" name=\"displayname\"><br>\n"
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"<label>Leave comment: </label><br>\n"
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"<input type=\"text\" name=\"text\"><br>\n"
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"<input type=\"submit\" name=\"submit\" value=\"Submit\">\n"
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"</form>\n", cgiOut);
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}
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/* each page stores comments with ids in [P * (page - 1), P * page)
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* if page is not specified, then we'll just print last P comments (for now)
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* TODO: print errors in div
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* FIXME: NOW PAGING IS FAULTY, FIX IT
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*/
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void
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print_page()
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@ -147,6 +175,65 @@ print_page()
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}
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}
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/* TODO: restore fields for user no to lose data */
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int
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handle_submitted_comment()
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{
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char displayname[MAX_NAME], text[MAX_COMMENT_SIZE], *sanitized_text;
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int rid, retval;
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cgiFormResultType err;
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Driver driver = DRIVER;
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UnixFsDriverData driver_data = DRIVER_DATA;
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err = cgiFormString("text", text, MAX_COMMENT_SIZE);
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if (err == cgiFormTruncated) {
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fprintf(cgiOut, "Comment too long (max %d bytes)\n", MAX_COMMENT_SIZE);
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goto defer;
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}
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if (err == cgiFormNotFound) {
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fprintf(cgiOut, "Comment text not provided\n");
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goto defer;
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}
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err = cgiFormString("displayname", displayname, MAX_NAME);
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if (err == cgiFormTruncated) {
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fprintf(cgiOut, "Name too long (max %d bytes)\n", MAX_NAME);
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goto defer;
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}
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if (err == cgiFormNotFound) {
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fprintf(cgiOut, "Name not provided\n");
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goto defer;
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}
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if (contain_special(displayname)) {
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err = cgiFormTruncated;
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fprintf(cgiOut, "Name must not contain HTML special characters\n");
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goto defer;
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}
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cgiFormInteger("reply-to", &rid, 0);
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sanitized_text = mk_specialchars(text);
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CommentHeader header;
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time(&header.creation_time);
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header.reply_id = rid;
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header.text_length = strlen(sanitized_text);
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header.user_sid = "anonymous";
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header.user_displayname = displayname;
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if (driver.leave_comment(&driver_data, &header, sanitized_text) < 0) {
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fprintf(cgiOut, "Failed to leave your comment\n");
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} else {
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fprintf(cgiOut, "Comment successfully left\n");
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}
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free(sanitized_text);
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defer:
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return (err == cgiFormSuccess ? 0 : -1);
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}
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int
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cgiMain()
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{
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@ -155,12 +242,16 @@ cgiMain()
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fprintf(cgiOut, "<html>\n");
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fprintf(cgiOut, "<head>\n");
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fprintf(cgiOut, "<title> Simple discuss powered by qments\n");
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fprintf(cgiOut, "<title> Simple discuss powered by qments </title>\n");
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fprintf(cgiOut, "</head>\n");
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fprintf(cgiOut, "<body>\n");
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if (cgiFormSubmitClicked("submit") == cgiFormSuccess) {
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handle_submitted_comment();
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}
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/* print_submit_form(); */
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print_submit_form();
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fprintf(cgiOut, "<div class=\"comment-section\">\n");
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print_page();
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@ -1,7 +1,15 @@
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#include <stdlib.h>
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#include <string.h>
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#include "string_buffer.h"
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#include "utils.h"
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int
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contain_special(const char *s)
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{
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return strchr(s, '&') || strchr(s, '"') || strchr(s, '\'') || strchr(s, '<') || strchr(s, '>');
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}
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char *
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mk_specialchars(const char *input)
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{
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@ -1,6 +1,8 @@
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#ifndef UTILS_H
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#define UTILS_H
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int contain_special(const char *s);
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char *mk_specialchars(const char *input);
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#endif /* UTILS_H */
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