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twitter_spider.c
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twitter_spider.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <syslog.h>
#define SIZE_1K 1024
#define SIZE_2M (2 * 1024 * 1024)
#define RM_HTML "rm -rf /tmp/fangongheike.html"
#define RM_MESSAGE "rm -rf /tmp/message"
#define RM_MONITOR "rm -rf /tmp/tengine/html/twitter/notice.html"
#define ACCESS_CMD "wget -e \"https_proxy=http://127.0.0.1:8118\" https://twitter.com/fangongheike -t 1 -q -O /tmp/fangongheike.html" \
" --dns-timeout=3 --connect-timeout=4 --read-timeout=240"
#define MAIL_CMD1 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define MAIL_CMD2 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define MAIL_CMD3 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define MAIL_CMD4 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define MAIL_CMD5 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define MAIL_CMD6 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define MAIL_CMD7 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define MAIL_CMD8 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define MAIL_CMD9 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define MAIL_CMD10 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define MAIL_CMD11 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define MAIL_CMD12 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define MAIL_CMD13 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define MAIL_CMD14 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define MAIL_CMD15 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define MAIL_CMD16 "cat /tmp/message | mail -s Twitter_update [email protected]"
#define UPDATE_LABLE "<div class=\"js-tweet-text-container\">"
char *g_message;
int init(void) {
g_message = malloc(SIZE_1K);
if (NULL == g_message) {
return -1;
}
memset(g_message, 0, SIZE_1K);
(void)daemon(1, 0);
return 0;
}
int scan(void) {
int size = 0;
int msg_len = 0;
FILE *fp = NULL;
char *p_update = NULL;
char *p_msg_start = NULL;
char *p_msg_end = NULL;
char *p_html = NULL;
fp = fopen("/tmp/fangongheike.html", "r");
if (NULL == fp) {
return -1;
}
p_html = malloc(SIZE_2M);
if (NULL == p_html) {
fclose(fp);
return -1;
}
memset(p_html, 0, SIZE_2M);
while (0 == feof(fp)) {
size = fread(p_html, 1, SIZE_2M, fp);
if (size <= 0) {
free(p_html);
fclose(fp);
return -1;
}
p_update = strstr(p_html, UPDATE_LABLE);
if (NULL == p_update) {
continue;
}
p_update += strlen(UPDATE_LABLE);
p_msg_start = strchr(p_update, '>');
if (NULL == p_msg_start) {
free(p_html);
fclose(fp);
return -1;
}
p_msg_start += 1;
p_msg_end = strchr(p_msg_start, '<');
if (NULL == p_msg_end) {
free(p_html);
fclose(fp);
return -1;
}
msg_len = (p_msg_end - p_msg_start > SIZE_1K) ? SIZE_1K : (p_msg_end - p_msg_start);
if ('\0' == g_message[0]) {
syslog(LOG_INFO, "get twitter update\n");
memcpy(g_message, p_msg_start, msg_len);
free(p_html);
fclose(fp);
return 0;
} else if (0 == memcmp(g_message, p_msg_start, msg_len)) {
syslog(LOG_INFO, "twitter do not update\n");
free(p_html);
fclose(fp);
return 0;
} else {
memset(g_message, 0, SIZE_1K);
memcpy(g_message, p_msg_start, msg_len);
syslog(LOG_INFO, "twitter updated\n");
free(p_html);
fclose(fp);
return 1;
}
}
free(p_html);
fclose(fp);
return 0;
}
void report(void) {
int size;
FILE *fp = NULL;
fp = fopen("/tmp/message", "w");
if (NULL == fp) {
return;
}
size = fwrite(g_message, strlen(g_message), 1, fp);
if (1 != size) {
fclose(fp);
return;
}
fflush(fp);
fclose(fp);
fp = NULL;
(void)system(MAIL_CMD1);
(void)sleep(3);
(void)system(MAIL_CMD2);
(void)sleep(3);
(void)system(MAIL_CMD3);
(void)sleep(3);
(void)system(MAIL_CMD4);
(void)sleep(3);
(void)system(MAIL_CMD5);
(void)sleep(3);
(void)system(MAIL_CMD6);
(void)sleep(3);
(void)system(MAIL_CMD7);
(void)sleep(3);
(void)system(MAIL_CMD8);
(void)sleep(3);
(void)system(MAIL_CMD9);
(void)sleep(3);
(void)system(MAIL_CMD10);
(void)sleep(3);
(void)system(MAIL_CMD11);
(void)sleep(3);
(void)system(MAIL_CMD12);
(void)sleep(3);
(void)system(MAIL_CMD13);
(void)sleep(3);
(void)system(MAIL_CMD14);
(void)sleep(3);
(void)system(MAIL_CMD15);
(void)sleep(3);
(void)system(MAIL_CMD16);
syslog(LOG_INFO, "twitter update has been mailed\n");
(void)system(RM_MONITOR);
fp = fopen("/tmp/tengine/html/twitter/notice.html", "w");
if (NULL == fp) {
return;
}
size = fwrite(g_message, strlen(g_message), 1, fp);
if (1 != size) {
fclose(fp);
return;
}
fflush(fp);
fclose(fp);
fp = NULL;
return;
}
int main(int argc, char *argv[]) {
int ret = 0;
ret = init();
if (ret < 0) {
return -1;
}
while (1) {
(void)sleep(60);
(void)system(RM_HTML);
(void)system(RM_MESSAGE);
(void)system(ACCESS_CMD);
ret = scan();
if (1 != ret) {
continue;
}
report();
}
}