Some more refactores, added articles functionality to web server

include/articles_op/article.h

@@ -26,4 +26,7 @@ typedef struct
 
 #endif
 
+int list_articles(article_info **articles);
+long get_article_contents(article_info *article);
+
 #endif

include/articles_op/html.h

@@ -0,0 +1,23 @@
+#ifndef _HTML_H
+#define _HTML_H
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#ifndef _ARTICLE_INFO
+#define _ARTICLE_INFO
+
+typedef struct
+{
+    char *title;
+    long time;
+    char *content;
+    unsigned long length;
+} article_info;
+#endif
+
+int gen_html_article(article_info article, char **out);
+int gen_html_article_list(article_info *articles, int n, char **out);
+
+#endif

include/netw_op/request.h

@@ -11,8 +11,6 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 
-#define FILE_SIZE 1024
-
 struct header_s {
     char * str;
     size_t size;

src/articles_op/article.c

@@ -2,8 +2,7 @@
 
 int list_articles(article_info **articles)
 {
-    // FILE *file = fopen("./static/articles_list.db", "r");
-    FILE *file = fopen("./test_.db", "r");
+    FILE *file = fopen("./static/articles_list.db", "r");
     if (file == NULL)
     {
         perror("Couldn't open db file");
@@ -70,8 +69,7 @@ long get_article_contents(article_info *article)
         snprintf(name, line_length, "%ld", article->time);
     }
 
-    // snprintf(NULL, 0, "./static/articles/%s/%s.md", article->title, article->title);
-    int line_length = snprintf(NULL, 0, "./test_articles/%s/%s.md", name, name) + 1;
+    int line_length = snprintf(NULL, 0, "./static/articles/%s/%s.md", name, name) + 1;
     char *path = malloc(line_length);
     if (path == NULL)
     {
@@ -79,8 +77,7 @@ long get_article_contents(article_info *article)
         return -1;
     }
 
-    // snprintf(path, line_length, "./static/articles/%s/%s.md", article->title, article->title);
-    snprintf(path, line_length, "./test_articles/%s/%s.md", name, name);
+    snprintf(path, line_length, "./static/articles/%s/%s.md", name, name);
 
     FILE *file = fopen(path, "r");
     if (file == NULL)
@@ -102,62 +99,24 @@ long get_article_contents(article_info *article)
     return article->length;
 }
 
-int gen_html_article(article_info article, char **out)
-{
-    // FILE *template = fopen("./static/article.html", "r");
-    FILE *template = fopen("./test_article.html", "r");
-    if (template == NULL)
-    {
-        perror("Couldn't open article template");
-        *out = "500";
-        return -1;
-    }
+// /* Only for testing purposes */
+// int main()
+// {
+//     article_info *articles = malloc(0);
 
-    size_t template_size = get_file_size(template);
+//     int n = list_articles(&articles);
 
-    char *template_str = malloc(template_size + 1);
+//     printf("Read %d lines\n", n);
+//     printf("Last article's creation date is %ld and title is %s\n", articles[n - 1].time, articles[n - 1].title);
 
-    for (int i = 0; i < template_size; i++)
-        template_str[i] = fgetc(template);
-    template_str[template_size] = '\0';
+//     for (int i = 0; i < n; i++)
+//         get_article_contents(&(articles[i]));
 
-    *out = malloc(template_size + article.length + 1);
+//     printf("Got content of %d files\n", n);
 
-    char *content;
+//     char **html = malloc(sizeof(char *) * n);
+//     for (int i = 0; i < n; i++)
+//         gen_html_article(articles[i], &(html[i]));
 
-    process_md(article, &content);
-
-    int line_length = snprintf(NULL, 0, template_str, article.title, content) + 1;
-    *out = malloc(line_length);
-    if (*out == NULL)
-    {
-        *out = "500";
-        return -1;
-    }
-
-    snprintf(*out, line_length, template_str, article.title, content);
-
-    return line_length;
-}
-
-/* Only for testing purposes */
-int main()
-{
-    article_info *articles = malloc(0);
-
-    int n = list_articles(&articles);
-
-    printf("Read %d lines\n", n);
-    printf("Last article's creation date is %ld and title is %s\n", articles[n - 1].time, articles[n - 1].title);
-
-    for (int i = 0; i < n; i++)
-        get_article_contents(&(articles[i]));
-
-    printf("Got content of %d files\n", n);
-
-    char **html = malloc(sizeof(char *) * n);
-    for (int i = 0; i < n; i++)
-        gen_html_article(articles[i], &(html[i]));
-
-    return 0;
-}
+//     return 0;
+// }

src/articles_op/html.c

@@ -0,0 +1,100 @@
+#include "../../include/articles_op/html.h"
+#include "../../include/articles_op/article.h"
+
+int gen_html_article(article_info article, char **out)
+{
+    FILE *template = fopen("./static/articles/index.html", "r");
+    if (template == NULL)
+    {
+        perror("Couldn't open article template");
+        *out = "500";
+        return -1;
+    }
+
+    size_t template_size = get_file_size(template);
+
+    char *template_str = malloc(template_size + 1);
+
+    for (int i = 0; i < template_size; i++)
+        template_str[i] = fgetc(template);
+    template_str[template_size] = '\0';
+
+    *out = malloc(template_size + article.length + 1);
+
+    char *content;
+
+    process_md(article, &content);
+
+    int line_length = snprintf(NULL, 0, template_str, article.title, content) + 1;
+    *out = malloc(line_length);
+    if (*out == NULL)
+    {
+        *out = "500";
+        return -1;
+    }
+
+    snprintf(*out, line_length, template_str, article.title, content);
+
+    free(template_str);
+
+    return line_length;
+}
+
+int gen_html_article_list(article_info *articles, int n, char **out)
+{
+    if (n == 0)
+    {
+        *out = "No articles found";
+        return 0;
+    }
+
+    *out = strdup("<ul>\n");
+    char *insert;
+
+    for (int i = 0; i < n; i++)
+    {
+        int line_length = snprintf(NULL, 0, "<li><a href=\"/article/%d\" >%s</a></li>\n", i, articles[i].title) + 1;
+
+        insert = malloc(line_length);
+        *out = realloc(*out, strlen(*out) + line_length);
+        if (insert == NULL || *out == NULL)
+        {
+            *out = "500 Memory error";
+            return -1;
+        }
+
+        snprintf(insert, line_length, "<li><a href=\"/article/%d\" >%s</a></li>\n", i, articles[i].title);
+
+        strcat(*out, insert);
+    }
+
+    *out = realloc(*out, strlen(*out) + strlen("</ul>") + 1);
+    strcat(*out, "</ul>");
+
+    free(insert);
+
+    return 0;
+}
+
+// /* Only for testing purposes */
+// int main ()
+// {
+//     article_info *articles = malloc(0);
+
+//     int n = list_articles(&articles);
+
+//     printf("Read %d lines\n", n);
+//     printf("Last article's creation date is %ld and title is %s\n", articles[n - 1].time, articles[n - 1].title);
+
+//     for (int i = 0; i < n; i++)
+//         get_article_contents(&(articles[i]));
+
+//     printf("Got content of %d files\n", n);
+
+//     char *html;
+//     gen_html_article_list(articles, n, &html);
+
+//     printf("-%s-\n", html);
+
+//     return 0;
+// }

src/articles_op/process_md.c

@@ -202,7 +202,7 @@ int process_md(article_info article, char **out)
                 snprintf(append, append_line_length, "<img src=\"%s\" alt=\"%s\"> ", src, internal_text);
                 strcat(*out, append);
 
-                i += i + 2 + n + 2 + k + 1;
+                i += 2 + n + 2 + k + 1;
 
                 free(append);
                 free(src);
@@ -223,7 +223,7 @@ int process_md(article_info article, char **out)
                 int k = 0;
                 while (buff[i + 1 + n + 2 + k] != ')')
                     k++;
-                
+
                 char *internal_text = malloc(n + 1);
                 memcpy(internal_text, buff + i + 1, n);
                 internal_text[n] = '\0';
@@ -245,12 +245,14 @@ int process_md(article_info article, char **out)
                 snprintf(append, append_line_length, "<a href=\"%s\">%s</a> ", href, internal_text);
                 strcat(*out, append);
 
-                i += i + 1 + n + 2 + k + 1;
+                i += 1 + n + 2 + k + 1;
 
                 free(append);
                 free(href);
                 free(internal_text);
 
+                printf("++%d-%c++\n", i, buff[i]);
+
                 continue;
             }
 
@@ -264,6 +266,8 @@ int process_md(article_info article, char **out)
             *out = tmp_out;
             (*out)[len] = buff[i];
             (*out)[len + 1] = '\0';
+
+            printf("**%d-%c**\n", i, buff[i]);
         }
 
         tmp_out = realloc(*out, strlen(*out) + strlen("</p>") + 1);
@@ -290,8 +294,7 @@ int process_md(article_info article, char **out)
             (*out)[len + 1] = '\0';
         }
     }
-
-    printf("%s\n\n***\n", *out);
+    (*out)[strlen(*out) - 1] = '\0';
 
     return strlen(*out);
 }

src/netw_op/request.c

@@ -2,7 +2,8 @@
 #include "../../include/utils_op/utils.h"
 #include "../../include/file_op/file.h"
 #include "../../include/file_op/mime.h"
-#include "../../include/db_op/db_cli.h"
+#include "../../include/articles_op/html.h"
+#include "../../include/articles_op/article.h"
 
 /**
  * @brief Send 404 response
@@ -34,10 +35,10 @@ void res_500(int fd)
 {
     char *msg = "Server error";
 
-    struct header_s *header = gen_header(500, sizeof(msg), "text/plain");
+    struct header_s *header = gen_header(500, strlen(msg), "text/plain");
     send(fd, header->str, header->size - 1, 0);
 
-    send(fd, msg, sizeof(msg), 0);
+    send(fd, msg, strlen(msg), 0);
     close(fd);
 
     printf("500 ERROR\n");
@@ -158,17 +159,41 @@ void handle_get_request(int fd, char *request)
     char *path = get_path(request);
     printf("Client accessed path: %s\n", path);
 
-    if (strcmp(path, "/") == 0)
+    if (strcmp(path, "/") == 0 || strcmp(path, "/index.html") == 0)
     {
         FILE *fp = fopen("static/index.html", "r");
-        char buff[FILE_SIZE], msg[FILE_SIZE * 2], articles_list_str[FILE_SIZE / 2] = {0}, blogposts_list_str[FILE_SIZE / 2] = {0};
+        if (fp == NULL)
+        {
+            res_404(fd, "/index.html");
+            return;
+        }
 
-        fread(buff, FILE_SIZE, 1, fp);
+        size_t file_size = get_file_size(fp) + 1;
+        char *template = malloc(file_size);
+
+        fread(template, file_size, 1, fp);
         fclose(fp);
 
-        
+        article_info *articles = malloc(0);
+        int amount = list_articles(&articles);
+        if (amount < 0)
+        {
+            res_500(fd);
+            return;
+        }
 
-        sprintf(msg, buff, articles_list_str);
+        char *articles_list_str;
+        gen_html_article_list(articles, amount, &articles_list_str);
+
+        int line_length = snprintf(NULL, 0, template, articles_list_str) + 1;
+        char *msg = malloc(line_length);
+        if (msg == NULL)
+        {
+            res_500(fd);
+            return;
+        }
+
+        snprintf(msg, line_length, template, articles_list_str);
 
         struct header_s *header = gen_header(200, strlen(msg), "text/html");
         send(fd, header->str, header->size - 1, 0);
@@ -181,12 +206,49 @@ void handle_get_request(int fd, char *request)
         return;
     }
 
-    if (strncmp(path, "/blog/", strlen("/blog/")) == 0)
+    if (strncmp(path, "/article/", strlen("/article/")) == 0)
     {
-        char *id = (char *)malloc(strlen(path) - strlen("/blog/") + 1);
-        memmove(id, path + strlen("/blog/"), strlen(path) - strlen("/blog/") + 1);
+        char *id_str = (char *)malloc(strlen(path) - strlen("/article/") + 1);
+        memmove(id_str, path + strlen("/article/"), strlen(path) - strlen("/article/") + 1);
 
-        printf("Blog post id = %s\n", id);
+        int id = strtol(id_str, NULL, 10);
+        if (id < 0)
+        {
+            res_404(fd, path);
+            return;
+        }
+
+        article_info *articles = malloc(0);
+        int amount = list_articles(&articles);
+        if (amount < 0)
+        {
+            res_500(fd);
+            return;
+        }
+
+        if (id > amount-1)
+        {
+            res_404(fd, path);
+            return;
+        }
+
+        get_article_contents(&(articles[id]));
+
+        char *html;
+        gen_html_article(articles[id], &html);
+
+        struct header_s *header = gen_header(200, strlen(html), "text/html");
+        send(fd, header->str, header->size - 1, 0);
+
+        send(fd, html, strlen(html), 0);
+        close(fd);
+
+        printf("Sent article with id=%d\n", id);
+
+        free(articles);
+        free(html);
+
+        return;
     }
 
     if (send_response(fd, path) < 0)

static/articles/index.html

@@ -1,12 +1,21 @@
 <!DOCTYPE html>
 <html lang="en">
+
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>%s</title>
+
     <link rel="stylesheet" href="style.css">
 </head>
+
 <body>
-    %s
+    <header>
+        <a href="/" id="logo"><img src="/logo.png" alt="logo" /></a>
+    </header>
+    <main>
+        %s
+    </main>
 </body>
+
 </html>

static/index.html

@@ -11,7 +11,7 @@
 
 <body>
     <header>
-        <a href="/" id="logo"><img src="./logo.png" alt="logo" /></a>
+        <a href="/" id="logo"><img src="/logo.png" alt="logo" /></a>
     </header>
     <main>
         <h1>Home</h1>
@@ -21,6 +21,7 @@
             <li><a href="/projects">Projects</a></li>
             <li><a href="/philosophy">Philosophy</a></li>
         </ul>
+        <h1>Articles</h1>
         %s
     </main>
 </body>