diff options
Diffstat (limited to 'src/Routes/Images.c')
| -rw-r--r-- | src/Routes/Images.c | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/src/Routes/Images.c b/src/Routes/Images.c new file mode 100644 index 0000000..67ae94c --- /dev/null +++ b/src/Routes/Images.c @@ -0,0 +1,278 @@ +#include "Images.h" +#include "../Utility/Unescape.h" + +#include <curl/curl.h> +#include <libxml/HTMLparser.h> +#include <libxml/xpath.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> + +struct MemoryBlock { + char *response; + size_t size; +}; + +static size_t ImageWriteCallback(void *data, size_t size, size_t nmemb, + void *userp) { + size_t realsize = size * nmemb; + struct MemoryBlock *mem = (struct MemoryBlock *)userp; + char *ptr = (char *)realloc(mem->response, mem->size + realsize + 1); + if (ptr == NULL) { + return 0; + } + mem->response = ptr; + memcpy(&(mem->response[mem->size]), data, realsize); + mem->size += realsize; + mem->response[mem->size] = 0; + return realsize; +} + +static char *fetch_images_html(const char *url) { + CURL *curl_handle; + struct MemoryBlock chunk = {.response = malloc(1), .size = 0}; + if (!chunk.response) { + return NULL; + } + + curl_handle = curl_easy_init(); + if (!curl_handle) { + free(chunk.response); + return NULL; + } + + curl_easy_setopt(curl_handle, CURLOPT_URL, url); + curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, ImageWriteCallback); + curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk); + curl_easy_setopt( + curl_handle, CURLOPT_USERAGENT, + "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko"); + curl_easy_setopt(curl_handle, CURLOPT_FOLLOWLOCATION, 1L); + curl_easy_setopt(curl_handle, CURLOPT_TIMEOUT, 10L); + + CURLcode res = curl_easy_perform(curl_handle); + if (res != CURLE_OK) { + free(chunk.response); + curl_easy_cleanup(curl_handle); + return NULL; + } + + curl_easy_cleanup(curl_handle); + return chunk.response; +} + +int images_handler(UrlParams *params) { + TemplateContext ctx = new_context(); + char *raw_query = ""; + + if (params) { + for (int i = 0; i < params->count; i++) { + if (strcmp(params->params[i].key, "q") == 0) { + raw_query = params->params[i].value; + break; + } + } + } + + char *display_query = url_decode_query(raw_query); + context_set(&ctx, "query", display_query); + + if (!raw_query || strlen(raw_query) == 0) { + send_response("<h1>No query provided</h1>"); + if (display_query) free(display_query); + free_context(&ctx); + return -1; + } + + CURL *tmp = curl_easy_init(); + if (!tmp) { + send_response("<h1>Error initializing curl</h1>"); + if (display_query) free(display_query); + free_context(&ctx); + return -1; + } + char *encoded_query = curl_easy_escape(tmp, raw_query, 0); + curl_easy_cleanup(tmp); + + if (!encoded_query) { + send_response("<h1>Error encoding query</h1>"); + if (display_query) free(display_query); + free_context(&ctx); + return -1; + } + + char url[1024]; + snprintf(url, sizeof(url), + "https://www.bing.com/images/search?q=%s", encoded_query); + fprintf(stderr, "[DEBUG] Fetching URL: %s\n", url); + + char *html = fetch_images_html(url); + if (!html) { + fprintf(stderr, "[DEBUG] Failed to fetch HTML\n"); + send_response("<h1>Error fetching images</h1>"); + free(encoded_query); + free(display_query); + free_context(&ctx); + return -1; + } + + htmlDocPtr doc = htmlReadMemory(html, (int)strlen(html), NULL, NULL, + HTML_PARSE_RECOVER | HTML_PARSE_NOERROR); + if (!doc) { + free(html); + free(encoded_query); + free(display_query); + free_context(&ctx); + return -1; + } + + xmlXPathContextPtr xpathCtx = xmlXPathNewContext(doc); + + if (!xpathCtx) { + xmlFreeDoc(doc); + free(html); + free(encoded_query); + free(display_query); + free_context(&ctx); + return -1; + } + + xmlXPathObjectPtr xpathObj = + xmlXPathEvalExpression((const xmlChar *)"//div[@class='item']", xpathCtx); + + int image_count = 0; + char ***image_matrix = NULL; + int *inner_counts = NULL; + + if (xpathObj && xpathObj->nodesetval) { + int nodes = xpathObj->nodesetval->nodeNr; + fprintf(stderr, "[DEBUG] Found %d image items\n", nodes); + + int max_images = (nodes < 32) ? nodes : 32; + image_matrix = malloc(sizeof(char **) * max_images); + inner_counts = malloc(sizeof(int) * max_images); + + for (int i = 0; i < nodes; i++) { + if (image_count >= 32) break; + + xmlNodePtr node = xpathObj->nodesetval->nodeTab[i]; + xmlNodePtr img_node = NULL; + xmlNodePtr tit_node = NULL; + xmlNodePtr des_node = NULL; + xmlNodePtr thumb_link = NULL; + + for (xmlNodePtr child = node->children; child; child = child->next) { + if (child->type != XML_ELEMENT_NODE) continue; + + if (xmlStrcmp(child->name, (const xmlChar *)"a") == 0) { + xmlChar *class = xmlGetProp(child, (const xmlChar *)"class"); + if (class) { + if (xmlStrstr(class, (const xmlChar *)"thumb") != NULL) { + thumb_link = child; + for (xmlNodePtr thumb_child = child->children; thumb_child; thumb_child = thumb_child->next) { + if (xmlStrcmp(thumb_child->name, (const xmlChar *)"div") == 0) { + xmlChar *div_class = xmlGetProp(thumb_child, (const xmlChar *)"class"); + if (div_class && xmlStrcmp(div_class, (const xmlChar *)"cico") == 0) { + for (xmlNodePtr cico_child = thumb_child->children; cico_child; cico_child = cico_child->next) { + if (xmlStrcmp(cico_child->name, (const xmlChar *)"img") == 0) { + img_node = cico_child; + break; + } + } + } + if (div_class) xmlFree(div_class); + } + } + } else if (xmlStrstr(class, (const xmlChar *)"tit") != NULL) { + tit_node = child; + } + xmlFree(class); + } + } else if (xmlStrcmp(child->name, (const xmlChar *)"div") == 0) { + xmlChar *class = xmlGetProp(child, (const xmlChar *)"class"); + if (class && xmlStrcmp(class, (const xmlChar *)"meta") == 0) { + for (xmlNodePtr meta_child = child->children; meta_child; meta_child = meta_child->next) { + if (xmlStrcmp(meta_child->name, (const xmlChar *)"div") == 0) { + xmlChar *div_class = xmlGetProp(meta_child, (const xmlChar *)"class"); + if (div_class) { + if (xmlStrcmp(div_class, (const xmlChar *)"des") == 0) { + des_node = meta_child; + } + xmlFree(div_class); + } + } else if (xmlStrcmp(meta_child->name, (const xmlChar *)"a") == 0) { + xmlChar *a_class = xmlGetProp(meta_child, (const xmlChar *)"class"); + if (a_class && xmlStrstr(a_class, (const xmlChar *)"tit") != NULL) { + tit_node = meta_child; + } + if (a_class) xmlFree(a_class); + } + } + } + if (class) xmlFree(class); + } + } + + xmlChar *iurl = img_node ? xmlGetProp(img_node, (const xmlChar *)"src") : NULL; + xmlChar *full_url = thumb_link ? xmlGetProp(thumb_link, (const xmlChar *)"href") : NULL; + xmlChar *title = des_node ? xmlNodeGetContent(des_node) : (tit_node ? xmlNodeGetContent(tit_node) : NULL); + xmlChar *rurl = tit_node ? xmlGetProp(tit_node, (const xmlChar *)"href") : NULL; + + fprintf(stderr, "[DEBUG] Image %d: thumb=%s, full=%s, title=%s, site=%s\n", + image_count, iurl ? (char *)iurl : "nil", + full_url ? (char *)full_url : "nil", + title ? (char *)title : "nil", + rurl ? (char *)rurl : "nil"); + + if (iurl && strlen((char *)iurl) > 0) { + image_matrix[image_count] = malloc(sizeof(char *) * 4); + image_matrix[image_count][0] = strdup((char *)iurl); + image_matrix[image_count][1] = strdup(title ? (char *)title : "Image"); + image_matrix[image_count][2] = strdup(rurl ? (char *)rurl : "#"); + image_matrix[image_count][3] = strdup(full_url ? (char *)full_url : "#"); + inner_counts[image_count] = 4; + image_count++; + } + + if (iurl) xmlFree(iurl); + if (title) xmlFree(title); + if (rurl) xmlFree(rurl); + if (full_url) xmlFree(full_url); + } + } + + context_set_array_of_arrays(&ctx, "images", image_matrix, image_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>"); + } + + if (image_matrix) { + for (int i = 0; i < image_count; i++) { + for (int j = 0; j < 4; j++) { + free(image_matrix[i][j]); + } + free(image_matrix[i]); + } + free(image_matrix); + } + if (inner_counts) { + free(inner_counts); + } + + if (xpathObj) xmlXPathFreeObject(xpathObj); + if (xpathCtx) xmlXPathFreeContext(xpathCtx); + if (doc) xmlFreeDoc(doc); + free(html); + curl_free(encoded_query); + free(display_query); + free_context(&ctx); + + return 0; +}
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