feat: new file management utility, splitted http into http and http headers, new string function (to_lowercase) + other small things

httpd/Makefile

@@ -9,10 +9,12 @@ ASAN_DBG_FLAGS = -fsanitize=address
 UTILS_SRCS = src/utils/string/string.c \
 			 src/utils/time/fmt_time.c \
 			 src/utils/parsing/words.c \
-			 src/utils/parsing/blanks.c
+			 src/utils/parsing/blanks.c \
+			 utils/files/files.c
 MODULES_SRCS = src/config/config.c \
 			   src/server/server.c \
 			   src/http/http.c \
+			   src/http/headers.c \
 			   src/logger/logs.c \
 			   src/logger/errors.c
 SRCS = $(UTILS_SRCS) \

httpd/src/http/headers.c

@@ -0,0 +1,86 @@
+#include "headers.h"
+
+#include <stdlib.h>
+
+#include "../utils/parsing/words.h"
+
+void destroy_headers(struct http_header *headers)
+{
+    while (headers != NULL)
+    {
+        struct http_header *next = headers->next;
+        free(headers);
+        headers = next;
+    }
+}
+
+ssize_t read_field(struct string *str, size_t offset, struct string **res)
+{
+    ssize_t nread = read_word_delim(str, offset, res, ":\n");
+    if (nread <= 0)
+        return ERR_HTTP_INVALID_INPUT;
+
+    if (str->size <= offset + nread || str->data[offset + nread] != ':')
+        return ERR_HTTP_INVALID_INPUT;
+
+    string_to_lowercase(*res);
+
+    return nread;
+}
+
+ssize_t read_value(struct string *str, size_t offset, struct string **res)
+{
+    ssize_t nread = read_word_delim(str, offset, res, "\n");
+    if (nread <= 0)
+        return ERR_HTTP_INVALID_INPUT;
+
+    if (str->size <= offset + nread || str->data[offset + nread] != '\n')
+        return ERR_HTTP_INVALID_INPUT;
+
+    return nread;
+}
+
+ssize_t parse_headers(struct http_request *res, struct string *req,
+                      size_t offset)
+{
+    size_t i = offset;
+    struct http_header *header = NULL;
+
+    // Yes I know I do one useless allocation but I really don't care at this
+    // point
+    while (req->data[i] != '\n') // ! Blank line
+    {
+        if (header == NULL)
+        {
+            // Init list
+            header = calloc(1, sizeof(struct http_header));
+            res->headers = header;
+        }
+        else
+        {
+            // Append
+            header->next = calloc(1, sizeof(struct http_header));
+            header = header->next;
+        }
+
+        // Check allocation
+        if (header == NULL)
+            return ERR_HTTP_OUT_OF_MEMORY;
+
+        // Read field
+        ssize_t nread = read_field(req, offset, &header->field);
+        if (nread <= 0)
+            return nread; // Contains error code when negative
+
+        i += nread;
+
+        // Read value
+        nread = read_value(req, offset, &header->value);
+        if (nread <= 0)
+            return nread; // Contains error code when negative
+
+        i += nread + 1;
+    }
+
+    return i + 1;
+}

httpd/src/http/headers.h

@@ -0,0 +1,62 @@
+#ifndef HEADERS_H
+#define HEADERS_H
+
+#include <stddef.h>
+#include <sys/types.h>
+
+#include "http.h"
+
+// === Functions
+
+/*
+ * @brief
+ *
+ * @param headers
+ */
+void destroy_headers(struct http_header *headers);
+
+/*
+ * @brief
+ *
+ * @param str
+ * @param offset
+ * @param res
+ *
+ * @return
+ */
+ssize_t read_field(struct string *str, size_t offset, struct string **res);
+
+/*
+ * @brief
+ *
+ * @param str
+ * @param offset
+ * @param res
+ *
+ * @return
+ */
+ssize_t read_value(struct string *str, size_t offset, struct string **res);
+
+/*
+ * @brief
+ *
+ * @param res
+ * @param req
+ * @param offset
+ *
+ * @return
+ */
+ssize_t parse_headers(struct http_request *res, struct string *req,
+                      size_t offset);
+
+/*
+ * @brief
+ *
+ * @param headers
+ * @param field
+ *
+ * @return
+ */
+struct http_header* get_header(struct http_header *headers, const char* field);
+
+#endif // ! HEADERS_H

httpd/src/http/http.c

@@ -5,45 +5,10 @@
 #include <string.h>
 
 #include "../utils/parsing/words.h"
+#include "headers.h"
 
 // === Static functions
 
-static void destroy_headers(struct http_header *headers)
-{
-    while (headers != NULL)
-    {
-        struct http_header *next = headers->next;
-        free(headers);
-        headers = next;
-    }
-}
-
-static ssize_t read_field(struct string *str, size_t offset,
-                          struct string **res)
-{
-    ssize_t nread = read_word_delim(str, offset, res, ":\n");
-    if (nread <= 0)
-        return ERR_HTTP_INVALID_INPUT;
-
-    if (str->size <= offset + nread || str->data[offset + nread] != ':')
-        return ERR_HTTP_INVALID_INPUT;
-
-    return nread;
-}
-
-static ssize_t read_value(struct string *str, size_t offset,
-                          struct string **res)
-{
-    ssize_t nread = read_word_delim(str, offset, res, "\n");
-    if (nread <= 0)
-        return ERR_HTTP_INVALID_INPUT;
-
-    if (str->size <= offset + nread || str->data[offset + nread] != '\n')
-        return ERR_HTTP_INVALID_INPUT;
-
-    return nread;
-}
-
 // Parses the status line of req, stores the result in res and returns the
 // number of read characters or a negative number on error
 // WARNING res must be pre allocated
@@ -95,35 +60,30 @@ static ssize_t parse_reqline(struct http_request *res, struct string *req)
     return i;
 }
 
-static ssize_t parse_headers(struct http_header *res, struct string *req,
-                             size_t offset)
-{
-    size_t i = offset;
-
-    while (req->data[i] != '\n') // ! Blank line
-    {
-        // Read field
-        ssize_t nread = read_field(req, offset, &res->field);
-        if (nread <= 0)
-            return nread; // Contains error code when negative
-
-        i += nread;
-
-        // Read value
-        nread = read_value(req, offset, &res->value);
-        if (nread <= 0)
-            return nread; // Contains error code when negative
-
-        i += nread + 1;
-    }
-
-    return i + 1;
-}
-
 // === Functions
 
-// struct http_request *parse_request(struct string *req)
+// TODO handle logs and free adequately
-// {}
+struct http_request *parse_request(struct string *req)
+{
+    struct http_request *res = calloc(1, sizeof(struct http_request));
+    if (res == NULL)
+        return NULL;
+
+    // Status line
+    size_t i = 0;
+    ssize_t nread = parse_reqline(res, req);
+    if (nread <= 0)
+        return NULL;
+
+    i += nread;
+
+    // Headers
+    nread = parse_headers(res, req, i);
+    if (nread <= 0)
+        return NULL;
+
+    return res;
+}
 
 // struct http_response *generate_response(struct http_request *req)
 // {}

httpd/src/logger/errors.h

@@ -15,13 +15,10 @@ void errlog_init(bool enabled, FILE *logfile_stream);
 void print_err();
 
 /* @brief Prints error logs, just like print_log(), and also to stderr
- *
  */
 void print_log_err(char* format, ...);
 
 /* @brief Prints error logs, just like print_log()
- *
- *
  */
 char* get_err();
 

httpd/src/utils/files/files.c

@@ -0,0 +1,31 @@
+#include "files.h"
+
+#include <stdio.h>
+
+#include "../string/string.h"
+
+bool file_exists(const char *path)
+{}
+
+bool is_directory(const char *path)
+{}
+
+// TODO handle logging
+struct string *get_file_content(const char *path)
+{
+    // Open file
+    FILE *stream = fopen(path, "r");
+    if (stream == NULL)
+        return NULL;
+
+    // Alloc result
+    char buf[BUFFER_SIZE];
+    struct string *res = string_create(NULL, 0);
+    if (res == NULL)
+    {
+        return NULL;
+    }
+
+    int nread;
+    while ((fgets(buf, BUFFER_SIZE, stream)))
+}

httpd/src/utils/files/files.h

@@ -0,0 +1,42 @@
+#ifndef FILES_H
+#define FILES_H
+
+// === Definitions
+
+#define BUFFER_SIZE 1024
+
+// === Includes
+
+#include <stdbool.h>
+#include <stddef.h>
+
+// === Functions
+
+/*
+ * @brief
+ *
+ * @param path
+ *
+ * @return
+ */
+bool file_exists(const char *path);
+
+/*
+ * @brief
+ *
+ * @param path
+ *
+ * @return
+ */
+bool is_directory(const char* path);
+
+/*
+ * @brief
+ *
+ * @param path
+ *
+ * @return
+ */
+struct string* get_file_content(const char *path);
+
+#endif // ! FILES_H

httpd/src/utils/string/string.c

@@ -1,5 +1,6 @@
 #include "string.h"
 
+#include <ctype.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ -64,6 +65,15 @@ void string_concat_str(struct string *str, const char *to_concat, size_t size)
     }
 }
 
+void string_to_lowercase(struct string *str)
+{
+    for (size_t i = 0; i < str->size; i++)
+    {
+        if (isupper(str->data[i]))
+            str->data[i] += 'a' - 'A';
+    }
+}
+
 void string_destroy(struct string *str)
 {
     if (str != NULL)

httpd/src/utils/string/string.h

@@ -42,6 +42,18 @@ int string_compare_n_str(const struct string *str1, const char *str2, size_t n);
  */
 void string_concat_str(struct string *str, const char *to_concat, size_t size);
 
+/*
+ ** @brief Concat a char * with its size in a struct string
+ **
+ ** @param str
+ */
+void string_to_lowercase(struct string *str);
+
+/*
+ ** @brief Free all string content
+ **
+ ** @param str
+ */
 void string_destroy(struct string *str);
 
 #endif /* ! STRING_H */