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#include "../beaker.h"
#include "beaker_globals.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>
static void build_cookie_headers(char *cookie_headers_buffer,
size_t buffer_size) {
cookie_headers_buffer[0] = '\0';
for (int i = 0; i < cookies_to_set_count; i++) {
char single_cookie_header[MAX_VALUE_LEN * 2];
snprintf(single_cookie_header, sizeof(single_cookie_header),
"Set-Cookie: %s=%s", cookies_to_set[i].name,
cookies_to_set[i].value);
if (strlen(cookies_to_set[i].expires) > 0) {
strcat(single_cookie_header, "; Expires=");
strcat(single_cookie_header, cookies_to_set[i].expires);
}
if (strlen(cookies_to_set[i].path) > 0) {
strcat(single_cookie_header, "; Path=");
strcat(single_cookie_header, cookies_to_set[i].path);
}
if (cookies_to_set[i].http_only) {
strcat(single_cookie_header, "; HttpOnly");
}
if (cookies_to_set[i].secure) {
strcat(single_cookie_header, "; Secure");
}
strcat(single_cookie_header, "\r\n");
strncat(cookie_headers_buffer, single_cookie_header,
buffer_size - strlen(cookie_headers_buffer) - 1);
}
}
void send_response(const char *html) {
if (current_client_socket == -1) {
fprintf(stderr, "[ERROR] send_response: No client socket set. Cannot send response.\n");
return;
}
char http_response_header[BUFFER_SIZE * 2];
int content_length = strlen(html);
char cookie_headers[BUFFER_SIZE];
build_cookie_headers(cookie_headers, sizeof(cookie_headers));
snprintf(http_response_header, sizeof(http_response_header),
"HTTP/1.1 200 OK\r\n"
"Content-Type: text/html; charset=UTF-8\r\n"
"Content-Length: %d\r\n"
"%s"
"Connection: close\r\n"
"\r\n",
content_length, cookie_headers);
if (send(current_client_socket, http_response_header,
strlen(http_response_header), 0) < 0) {
perror("Error sending HTTP header");
fprintf(stderr, "[ERROR] send_response: Failed to send HTTP header.\n");
return;
}
if (send(current_client_socket, html, content_length, 0) < 0) {
perror("Error sending HTML body");
fprintf(stderr, "[ERROR] send_response: Failed to send HTML body.\n");
return;
}
cookies_to_set_count = 0;
}
void send_redirect(const char *location) {
if (current_client_socket == -1) {
fprintf(stderr, "[ERROR] send_redirect: No client socket set. Cannot send redirect.\n");
return;
}
char http_response_header[BUFFER_SIZE];
snprintf(http_response_header, sizeof(http_response_header),
"HTTP/1.1 302 Found\r\n"
"Location: %s\r\n"
"Connection: close\r\n"
"\r\n",
location);
if (send(current_client_socket, http_response_header,
strlen(http_response_header), 0) < 0) {
perror("Error sending redirect header");
fprintf(stderr, "[ERROR] send_redirect: Failed to send redirect header.\n");
return;
}
cookies_to_set_count = 0;
}
void set_cookie(const char *name, const char *value, const char *expires,
const char *path, bool http_only, bool secure) {
if (cookies_to_set_count >= MAX_COOKIES) {
fprintf(stderr,
"[WARNING] set_cookie: Maximum number of cookies to set reached. Cannot set cookie '%s'.\n",
name);
return;
}
Cookie *new_cookie = &cookies_to_set[cookies_to_set_count];
strncpy(new_cookie->name, name, MAX_KEY_LEN - 1);
new_cookie->name[MAX_KEY_LEN - 1] = '\0';
strncpy(new_cookie->value, value, MAX_VALUE_LEN - 1);
new_cookie->value[MAX_VALUE_LEN - 1] = '\0';
if (expires && strlen(expires) > 0) {
strncpy(new_cookie->expires, expires, MAX_VALUE_LEN - 1);
new_cookie->expires[MAX_VALUE_LEN - 1] = '\0';
} else {
new_cookie->expires[0] = '\0';
}
if (path && strlen(path) > 0) {
strncpy(new_cookie->path, path, MAX_KEY_LEN - 1);
new_cookie->path[MAX_KEY_LEN - 1] = '\0';
} else {
new_cookie->path[0] = '\0';
}
new_cookie->http_only = http_only;
new_cookie->secure = secure;
cookies_to_set_count++;
}
char *get_cookie(const char *cookie_name) {
char *cookie_header_start = strstr(current_request_buffer, "\r\nCookie: ");
if (cookie_header_start == NULL) {
return NULL;
}
cookie_header_start += strlen("\r\nCookie: ");
char *cookie_header_end = strstr(cookie_header_start, "\r\n");
if (cookie_header_end == NULL) {
cookie_header_end = (char *)(current_request_buffer + strlen(current_request_buffer));
}
size_t cookie_str_len = cookie_header_end - cookie_header_start;
char *cookie_str = (char *)malloc(cookie_str_len + 1);
if (cookie_str == NULL) {
perror("Failed to allocate memory for raw cookie string");
fprintf(stderr, "[ERROR] get_cookie: Allocation failed for cookie_str.\n");
return NULL;
}
strncpy(cookie_str, cookie_header_start, cookie_str_len);
cookie_str[cookie_str_len] = '\0';
char *cookie_str_copy = strdup(cookie_str);
if (cookie_str_copy == NULL) {
perror("Failed to duplicate cookie string for strtok_r");
fprintf(stderr, "[ERROR] get_cookie: Duplication failed for cookie_str_copy.\n");
free(cookie_str);
return NULL;
}
char *token;
char *saveptr_cookie;
token = strtok_r(cookie_str_copy, ";", &saveptr_cookie);
while (token != NULL) {
while (*token == ' ') {
token++;
}
char *equals_sign = strchr(token, '=');
if (equals_sign != NULL) {
size_t name_len = equals_sign - token;
if (name_len == strlen(cookie_name) &&
strncmp(token, cookie_name, name_len) == 0) {
char *cookie_value = strdup(equals_sign + 1);
if (cookie_value == NULL) {
perror("Failed to duplicate cookie value");
fprintf(stderr, "[ERROR] get_cookie: Allocation failed for cookie_value.\n");
}
free(cookie_str);
free(cookie_str_copy);
return cookie_value;
}
}
token = strtok_r(NULL, ";", &saveptr_cookie);
}
free(cookie_str);
free(cookie_str_copy);
return NULL;
}
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