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#include "Images.h"
#include "../Cache/Cache.h"
#include "../Limiter/RateLimit.h"
#include "../Scraping/ImageScraping.h"
#include "../Utility/Unescape.h"
#include "../Utility/Utility.h"
#include "Config.h"
#include <beaker.h>
static char *build_images_request_cache_key(const char *query, int page,
const char *client_key) {
char scope_key[BUFFER_SIZE_MEDIUM];
snprintf(scope_key, sizeof(scope_key), "images_request:%s",
client_key ? client_key : "unknown");
return cache_compute_key(query, page, scope_key);
}
int images_handler(UrlParams *params) {
extern Config global_config;
TemplateContext ctx = new_context();
char *raw_query = "";
int page = 1;
if (params) {
for (int i = 0; i < params->count; i++) {
if (strcmp(params->params[i].key, "q") == 0) {
raw_query = params->params[i].value;
} else if (strcmp(params->params[i].key, "p") == 0) {
int parsed = atoi(params->params[i].value);
if (parsed > 1)
page = parsed;
}
}
}
char page_str[16], prev_str[16], next_str[16], two_prev_str[16],
two_next_str[16];
snprintf(page_str, sizeof(page_str), "%d", page);
snprintf(prev_str, sizeof(prev_str), "%d", page > 1 ? page - 1 : 0);
snprintf(next_str, sizeof(next_str), "%d", page + 1);
snprintf(two_prev_str, sizeof(two_prev_str), "%d", page > 2 ? page - 2 : 0);
snprintf(two_next_str, sizeof(two_next_str), "%d", page + 2);
context_set(&ctx, "query", raw_query);
char *theme = get_theme("");
context_set(&ctx, "theme", theme);
free(theme);
char *locale = get_locale("en_uk");
beaker_set_locale(&ctx, locale);
free(locale);
context_set(&ctx, "page", page_str);
context_set(&ctx, "prev_page", prev_str);
context_set(&ctx, "next_page", next_str);
context_set(&ctx, "two_prev_page", two_prev_str);
context_set(&ctx, "two_next_page", two_next_str);
char *display_query = url_decode_query(raw_query);
context_set(&ctx, "query", display_query);
if (!raw_query || strlen(raw_query) == 0) {
send_redirect("/");
if (display_query)
free(display_query);
free_context(&ctx);
return -1;
}
char client_key[BUFFER_SIZE_SMALL];
rate_limit_get_client_key(client_key, sizeof(client_key));
char *request_cache_key =
build_images_request_cache_key(raw_query, page, client_key);
int request_is_cached = 0;
if (request_cache_key && get_cache_ttl_image() > 0) {
char *cached_marker = NULL;
size_t cached_marker_size = 0;
if (cache_get(request_cache_key, (time_t)get_cache_ttl_image(),
&cached_marker, &cached_marker_size) == 0) {
request_is_cached = 1;
}
free(cached_marker);
}
if (!request_is_cached) {
RateLimitConfig rate_limit_config = {
.max_requests = global_config.rate_limit_images_requests,
.interval_seconds = global_config.rate_limit_images_interval,
};
RateLimitResult rate_limit_result =
rate_limit_check("images", &rate_limit_config);
if (rate_limit_result.limited) {
char response[256];
snprintf(response, sizeof(response),
"<h1>Slow down!</h1><p>Too many image searches from you!</p>");
send_response(response);
free(request_cache_key);
free(display_query);
free_context(&ctx);
return -1;
}
if (request_cache_key && get_cache_ttl_image() > 0) {
cache_set(request_cache_key, "1", 1);
}
}
ImageResult *results = NULL;
int result_count = 0;
if (scrape_images(raw_query, page, &results, &result_count) != 0 ||
!results) {
send_response("<h1>Error fetching images</h1>");
free(request_cache_key);
free(display_query);
free_context(&ctx);
return -1;
}
char ***image_matrix = malloc(sizeof(char **) * result_count);
int *inner_counts = malloc(sizeof(int) * result_count);
if (!image_matrix || !inner_counts) {
if (image_matrix)
free(image_matrix);
if (inner_counts)
free(inner_counts);
free_image_results(results, result_count);
free(request_cache_key);
free(display_query);
free_context(&ctx);
return -1;
}
for (int i = 0; i < result_count; i++) {
image_matrix[i] = malloc(sizeof(char *) * IMAGE_RESULT_FIELDS);
image_matrix[i][0] = strdup(results[i].thumbnail_url);
image_matrix[i][1] = strdup(results[i].title);
image_matrix[i][2] = strdup(results[i].page_url);
image_matrix[i][3] = strdup(results[i].full_url);
inner_counts[i] = IMAGE_RESULT_FIELDS;
}
context_set_array_of_arrays(&ctx, "images", image_matrix, result_count,
inner_counts);
char *rendered = render_template("images.html", &ctx);
if (rendered) {
send_response(rendered);
free(rendered);
} else {
send_response("<h1>Error rendering image results</h1>");
}
for (int i = 0; i < result_count; i++) {
for (int j = 0; j < IMAGE_RESULT_FIELDS; j++)
free(image_matrix[i][j]);
free(image_matrix[i]);
}
free(image_matrix);
free(inner_counts);
free_image_results(results, result_count);
free(request_cache_key);
free(display_query);
free_context(&ctx);
return 0;
}
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