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fix: improve memory handling in search cleanup paths

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frosty 2026-08-15 02:57:29 -04:00
commit 68d9d46e5e
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GPG key ID: 32DCAC76C4388DBF
2 changed files with 67 additions and 21 deletions
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3
src/Routes/Search.c
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@ -287,8 +287,7 @@ static void free_search_results(SearchResult **all_results, ScrapeJob *jobs,
static void free_infobox_results(InfoBoxThreadData *data) {
for (int i = 0; i < HANDLER_COUNT; i++) {
if (data[i].success)
free_infobox(&data[i].result);
free_infobox(&data[i].result);
}
}

85
src/Scraping/Scraping.c
View file

@ -1,6 +1,7 @@
#include "Scraping.h"
#include "../Cache/Cache.h"
#include "../Proxy/Proxy.h"
#include "../Utility/XmlHelper.h"
#include "Config.h"
#include <curl/curl.h>
#include <libxml/HTMLparser.h>
@ -170,14 +171,26 @@ void parse_and_cache_response(ScrapeJob *job) {
}
}
void cleanup_job_handle(ScrapeJob *job, CURL *handle) {
static void cleanup_job_results(ScrapeJob *job) {
if (!job || !job->out_results)
return;
xml_result_free(*job->out_results, job->results_count);
*job->out_results = NULL;
job->results_count = 0;
}
static void cleanup_job_handle(ScrapeJob *job, CURL *handle) {
struct curl_slist *headers = NULL;
curl_easy_getinfo(handle, CURLINFO_PRIVATE, &headers);
if (handle)
curl_easy_getinfo(handle, CURLINFO_PRIVATE, &headers);
if (headers)
curl_slist_free_all(headers);
free(job->response.memory);
job->response.memory = NULL;
job->response.size = 0;
job->response.capacity = 0;
}
void process_response(ScrapeJob *job, CURL *handle, CURLMsg *msg) {
@ -194,19 +207,25 @@ void process_response(ScrapeJob *job, CURL *handle, CURLMsg *msg) {
}
int setup_job(ScrapeJob *job, CURLM *multi_handle) {
if (job->handle)
if (job->handle) {
cleanup_job_handle(job, job->handle);
curl_easy_cleanup(job->handle);
if (job->response.memory)
job->handle = NULL;
} else if (job->response.memory) {
free(job->response.memory);
job->response.memory = NULL;
job->response.size = 0;
job->response.capacity = 0;
}
job->results_count = 0;
cleanup_job_results(job);
job->http_status = 0;
job->status = SCRAPE_STATUS_PENDING;
if (check_cache_for_job(job)) {
job->results_count = job->results_count > 0 ? job->results_count : 0;
if (check_cache_for_job(job))
return 0;
}
cleanup_job_results(job);
char *encoded_query = curl_easy_escape(NULL, job->query, 0);
if (!encoded_query) {
@ -247,6 +266,14 @@ int setup_job(ScrapeJob *job, CURLM *multi_handle) {
job->response.memory = (char *)malloc(INITIAL_BUFFER_SIZE);
job->response.size = 0;
job->response.capacity = INITIAL_BUFFER_SIZE;
if (!job->response.memory) {
curl_easy_cleanup(job->handle);
job->handle = NULL;
job->response.capacity = 0;
free(full_url);
job->status = SCRAPE_STATUS_FETCH_ERROR;
return -1;
}
struct curl_slist *headers =
build_request_headers(job->engine->host_header, job->engine->referer);
@ -255,10 +282,33 @@ int setup_job(ScrapeJob *job, CURLM *multi_handle) {
curl_easy_setopt(job->handle, CURLOPT_PRIVATE, headers);
free(full_url);
curl_multi_add_handle(multi_handle, job->handle);
CURLMcode add_result = curl_multi_add_handle(multi_handle, job->handle);
if (add_result != CURLM_OK) {
cleanup_job_handle(job, job->handle);
curl_easy_cleanup(job->handle);
job->handle = NULL;
job->status = SCRAPE_STATUS_FETCH_ERROR;
return -1;
}
return 0;
}
static void cleanup_unfinished_jobs(CURLM *multi_handle, ScrapeJob *jobs,
int num_jobs) {
for (int i = 0; i < num_jobs; i++) {
if (!jobs[i].handle)
continue;
curl_multi_remove_handle(multi_handle, jobs[i].handle);
cleanup_job_handle(&jobs[i], jobs[i].handle);
curl_easy_cleanup(jobs[i].handle);
jobs[i].handle = NULL;
if (jobs[i].status == SCRAPE_STATUS_PENDING)
jobs[i].status = SCRAPE_STATUS_FETCH_ERROR;
}
}
int handle_responses(CURLM *multi_handle, ScrapeJob *jobs, int num_jobs) {
CURLMsg *msg;
int msgs_left;
@ -304,27 +354,24 @@ retry:;
return -1;
for (int i = 0; i < num_jobs; i++) {
if (setup_job(&jobs[i], multi_handle) != 0 && jobs[i].handle) {
curl_multi_remove_handle(multi_handle, jobs[i].handle);
curl_easy_cleanup(jobs[i].handle);
jobs[i].handle = NULL;
}
setup_job(&jobs[i], multi_handle);
}
http_delay();
int still_running = 0;
curl_multi_perform(multi_handle, &still_running);
CURLMcode mc = curl_multi_perform(multi_handle, &still_running);
do {
while (mc == CURLM_OK && still_running) {
int numfds = 0;
CURLMcode mc = curl_multi_wait(multi_handle, NULL, 0, 1000, &numfds);
mc = curl_multi_wait(multi_handle, NULL, 0, 1000, &numfds);
if (mc != CURLM_OK)
break;
curl_multi_perform(multi_handle, &still_running);
} while (still_running);
mc = curl_multi_perform(multi_handle, &still_running);
}
handle_responses(multi_handle, jobs, num_jobs);
cleanup_unfinished_jobs(multi_handle, jobs, num_jobs);
curl_multi_cleanup(multi_handle);
if (retries < max_proxy_retries && should_retry(jobs, num_jobs)) {