mirror of
https://github.com/cesanta/mongoose.git
synced 2024-12-20 12:50:20 +08:00
2a541175b5
On my way, fixed a couple of cases where we had `()` in the header, and non-empty argument list in the source file. PUBLISHED_FROM=5519526cf84e2bbd425a726fcc112fea1a95cbf1
94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
#include <stdio.h>
|
|
#include <string.h>
|
|
#include "mongoose.h"
|
|
#include "../../../slre/slre.h"
|
|
|
|
static const char *regex = "href=\"((https?://)[^\\s/'\"<>]+/?[^\\s'\"<>]*)";
|
|
const int max_depth = 2;
|
|
|
|
struct userdata {
|
|
char *url;
|
|
int depth;
|
|
};
|
|
|
|
void crawl_page(struct mg_mgr *mgr, const char *url, size_t url_len, int depth);
|
|
void handle_reply(struct mg_connection *nc, struct http_message *hm);
|
|
|
|
static void event_handler(struct mg_connection *nc, int event, void *data) {
|
|
struct http_message *hm = (struct http_message *) data;
|
|
int connect_status;
|
|
|
|
switch (event) {
|
|
case MG_EV_CONNECT:
|
|
connect_status = *(int *) data;
|
|
if (connect_status != 0) {
|
|
printf("Error while loading page: %s, error: %s\n",
|
|
((struct userdata *) nc->user_data)->url,
|
|
strerror(connect_status));
|
|
}
|
|
break;
|
|
case MG_EV_CLOSE:
|
|
free(((struct userdata *) nc->user_data)->url);
|
|
free(nc->user_data);
|
|
break;
|
|
case MG_EV_HTTP_REPLY:
|
|
handle_reply(nc, hm);
|
|
nc->flags |= MG_F_SEND_AND_CLOSE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
int main(void) {
|
|
struct mg_mgr mgr;
|
|
|
|
mg_mgr_init(&mgr, NULL);
|
|
crawl_page(&mgr, "http://www.simpleweb.org/", ~0, 0);
|
|
|
|
for (;;) {
|
|
mg_mgr_poll(&mgr, 1000);
|
|
}
|
|
|
|
mg_mgr_free(&mgr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void crawl_page(struct mg_mgr *mgr, const char *url, size_t url_len,
|
|
int depth) {
|
|
struct mg_connection *nc;
|
|
struct userdata *data = malloc(sizeof(struct userdata));
|
|
|
|
if (url_len == (size_t) ~0) {
|
|
url_len = strlen(url);
|
|
}
|
|
|
|
data->url = strncpy(malloc(url_len + 1), url, url_len);
|
|
data->url[url_len] = '\0';
|
|
data->depth = depth;
|
|
|
|
nc = mg_connect_http(mgr, event_handler, url, NULL, NULL);
|
|
nc->user_data = data;
|
|
}
|
|
|
|
void handle_reply(struct mg_connection *nc, struct http_message *hm) {
|
|
struct userdata *ud = (struct userdata *) nc->user_data;
|
|
const char *body = hm->body.p;
|
|
|
|
int offset, max_matches = 2, cursor = 0, str_len = strlen(body);
|
|
struct slre_cap caps[max_matches];
|
|
|
|
printf("Loaded url: %s at depth %d\n", ud->url, ud->depth);
|
|
if (ud->depth == max_depth) {
|
|
return;
|
|
}
|
|
|
|
while (cursor < str_len &&
|
|
(offset = slre_match(regex, body + cursor, str_len - cursor, caps,
|
|
max_matches, SLRE_IGNORE_CASE)) > 0) {
|
|
crawl_page(nc->mgr, caps[0].ptr, caps[0].len, ud->depth + 1);
|
|
cursor += offset;
|
|
}
|
|
}
|