网络爬虫C实现http://blog.csdn.net/xu3737284/article/details/9614933
来源:互联网 发布:ug编程侧铣头走圆弧 编辑:程序博客网 时间:2024/06/05 21:05
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <fcntl.h>
- #include <winsock2.h>
- #include <unistd.h>
- #include <stdio.h>
- #include <string.h>
- #include <stdlib.h>
- #include <errno.h>
- #include <locale.h>
- #define bzero(p, s) memset(p, 0, s)
- #define USERAGENT "Wget/1.10.2"
- #define ACCEPT "*/*"
- #define ACCEPTLANGUAGE "zh-cn,zh;q=0.5"
- #define ACCEPTENCODING "gzip,deflate"
- #define ACCEPTCHARSET "gb2312,utf-8;q=0.7,*;q=0.7"
- #define KEEPALIVE "300"
- #define CONNECTION "keep-alive"
- #define CONTENTTYPE "application/x-www-form-urlencoded"
- #define MAXFILENAME 14
- #define DEBUG 1
- typedef struct webnode
- {
- char * host; /* 网页所在的主机 */
- int port; /* 网络服务器所使用的端口 */
- char * dir; /* 网页所在的目录 */
- char * page; /* 网页文件名 */
- char * file; /* 本地保存的文件名 */
- char IsHandled; /* 是否处理过 */
- struct webnode * brother; /* 兄弟节点链表指针 */
- struct webnode * child; /* 子节点链表指针 */
- } WEBNODE;
- struct sockaddr_in server_addr;
- int sockfd = 0, dsend = 0, totalsend = 0, nbytes = 0, reqn = 0, i = 0, j = 0, ret = 0;
- struct hostent *host;
- char request[409600] = "", buffer[1024] = "", httpheader[1024] = "";
- int FileNumber = 0;
- char e[2] = "@/";
- WEBNODE * NodeHeader, * NodeTail, * NodeCurr;
- char * mapped_mem;
- int GetHost(char * , char ** , char ** , int * , char ** ); /**/
- void AnalyzePage(WEBNODE *); /**/
- void AddInitNode(char *, char *, int, char * ); /**/
- void HandleInitNode(WEBNODE *); /**/
- void DisplayNode(WEBNODE *); /**/
- void HandOneNode(WEBNODE *); /**/
- void DoneWithList(int); /**/
- void DoOnce(); /**/
- void ConnectWeb(void); /**/
- void SendRequest(void); /**/
- void ReceiveResponse(void); /**/
- void GetEmail(char * ); /**/
- void GetLink(char * ); /**/
- void GetBeforePos(char * , char ** ); /**/
- void GetAfterPos(char * , char ** ); /**/
- void AddChildNode(WEBNODE * , char * ); /**/
- void GetAfterPosWithSlash(char * , char ** ); /**/
- void GetMemory(char ** , int ); /**/
- int IsExistWeb(WEBNODE * , char * , char * , int , char * ); /**/
- void Rstrchr(char * , int , char ** ); /**/
- int GetLocalAgent(char * UserAgent, char * Accept, char * AcceptLanguage, char * AcceptEncoding, char * AcceptCharset, char * KeepAlive, char * Connection, char * ContentType); /**/
- /**************************************************************
- 功能:设置 HTTP 协议头内容的一些固定值
- ***************************************************************/
- int GetLocalAgent(char * UserAgent, char * Accept, char * AcceptLanguage, char * AcceptEncoding, char * AcceptCharset, char * KeepAlive, char * Connection, char * ContentType)
- {
- memcpy(UserAgent, USERAGENT, strlen(USERAGENT));
- memcpy(Accept, ACCEPT, strlen(ACCEPT));
- memcpy(AcceptLanguage, ACCEPTLANGUAGE, strlen(ACCEPTLANGUAGE));
- memcpy(AcceptEncoding, ACCEPTENCODING, strlen(ACCEPTENCODING));
- memcpy(AcceptCharset, ACCEPTCHARSET, strlen(ACCEPTCHARSET));
- memcpy(KeepAlive, KEEPALIVE, strlen(KEEPALIVE));
- memcpy(Connection, CONNECTION, strlen(CONNECTION));
- memcpy(ContentType, CONTENTTYPE, strlen(CONTENTTYPE));
- return 0;
- }
- /**************************************************************
- 功能:在字符串 s 里搜索 x 字符,并设置指针 d 指向该位置
- ***************************************************************/
- void Rstrchr(char * s, int x, char ** d)
- {
- int len = strlen(s) - 1;
- while(len >= 0)
- {
- if(x == s[len]) {(*d) = s + len; return;}
- len--;
- }
- (*d) = 0;
- }
- /**************************************************************
- 功能:连接一个网站服务器
- ***************************************************************/
- void ConnectWeb(void)
- {
- /* connect to web server */
- /* create a socket descriptor */
- if((sockfd=socket(PF_INET,SOCK_STREAM,0))==-1)
- {
- fprintf(stderr,"\tSocket Error:%s\a\n",strerror(errno));
- exit(1);
- }
- /* bind address */
- bzero(&server_addr, sizeof(server_addr));
- server_addr.sin_family = AF_INET;
- server_addr.sin_port = htons(NodeCurr->port);
- server_addr.sin_addr = *((struct in_addr *)host->h_addr);
- /* connect to the server */
- if(connect(sockfd, (struct sockaddr *)(&server_addr), sizeof(struct sockaddr)) == -1)
- {
- fprintf(stderr, "\tConnect Error:%s\a\n", strerror(errno));
- exit(1);
- }
- }
- /**************************************************************
- 功能:向网站发送 HTTP 请求
- ***************************************************************/
- void SendRequest(void)
- {
- /* send my http-request to web server */
- dsend = 0;totalsend = 0;
- nbytes=strlen(request);
- while(totalsend < nbytes)
- {
- dsend = write(sockfd, request + totalsend, nbytes - totalsend);
- if(dsend==-1) {fprintf(stderr, "\tsend error!%s\n", strerror(errno));exit(0);}
- totalsend+=dsend;
- fprintf(stdout, "\n\tRequest.%d %d bytes send OK!\n", reqn, totalsend);
- }
- }
- /**************************************************************
- 功能:接收网站的 HTTP 返回
- ***************************************************************/
- void ReceiveResponse(void)
- {
- /* get response from web server */
- fd_set writefds;
- struct timeval tival;
- int retry = 0;
- FILE * localfp = NULL;
- i=0; j = 0;
- __ReCeive:
- FD_ZERO(&writefds);
- tival.tv_sec = 10;
- tival.tv_usec = 0;
- if(sockfd > 0) FD_SET(sockfd, &writefds);
- else {fprintf(stderr, "\n\tError, socket is negative!\n"); exit(0);}
- ret = select(sockfd + 1, &writefds, NULL, NULL, &tival);
- if(ret ==0 )
- {
- if(retry++ < 10) goto __ReCeive;
- }
- if(ret <= 0) {fprintf(stderr, "\n\tError while receiving!\n"); exit(0);}
- if(FD_ISSET(sockfd, &writefds))
- {
- memset(buffer, 0, 1024);
- memset(httpheader, 0, 1024);
- if((localfp = fopen(NodeCurr->file, "w")) == NULL) {if(DEBUG) fprintf(stderr, "create file '%s' error\n", NodeCurr->file); return;}
- /* receive data from web server */
- while((nbytes=read(sockfd,buffer,1))==1)
- {
- if(i < 4)
- {
- /* 获取 HTTP 消息头 */
- if(buffer[0] == '\r' || buffer[0] == '\n') i++;
- else i = 0;
- memcpy(httpheader + j, buffer, 1); j++;
- }
- else
- {
- /* 获取 HTTP 消息体 */
- fprintf(localfp, "%c", buffer[0]); /* print content on the screen */
- i++;
- }//else
- }//while
- fclose(localfp);
- }//if(FD_ISSET(sockfd, &writefds))
- }
- /**************************************************************
- 功能:执行一次 HTTP 请求
- ***************************************************************/
- void DoOnce()
- {
- /* send and receive */
- ConnectWeb(); /* connect to the web server */
- /* send a request */
- SendRequest();
- /* receive a response message from web server */
- ReceiveResponse();
- close(sockfd); /* because HTTP protocol do something one connection, so I can close it after receiving */
- }
- /**************************************************************
- 功能:执行 HTTP 请求
- ***************************************************************/
- void DoneWithList(int flag)
- {
- if(flag) fprintf(stdout, "\tRequest.%d is:\n%s", ++reqn, request);
- DoOnce();
- if(flag) fprintf(stdout, "\n\tThe following is the response header:\n%s", httpheader);
- }
- /**************************************************************
- 功能:从字符串 src 中分析出网站地址和端口,并得到文件和目录
- ***************************************************************/
- int GetHost(char * src, char ** web, char ** file, int * port, char ** dir)
- {
- char * pA, * pB, * pC;
- int len;
- *port = 0;
- if(!(*src)) return -1;
- pA = src;
- if(!strncmp(pA, "http://", strlen("http://"))) pA = src+strlen("http://");
- else return 1;
- pB = strchr(pA, '/');
- if(pB)
- {
- len = strlen(pA) - strlen(pB);
- GetMemory(web, len);
- memcpy((*web), pA, len);
- if(*(pB+1))
- {
- Rstrchr(pB + 1, '/', &pC);
- if(pC) len = strlen(pB + 1) - strlen(pC);
- else len = 0;
- if(len > 0)
- {
- GetMemory(dir, len);
- memcpy((*dir), pB + 1, len);
- if(pC + 1)
- {
- len = strlen(pC + 1);
- GetMemory(file, len);
- memcpy((*file), pC + 1, len);
- }
- else
- {
- len = 1;
- GetMemory(file, len);
- memcpy((*file), e, len);
- }// else
- }// if(len > 0)
- else
- {
- len = 1;
- GetMemory(dir, len);
- memcpy((*dir), e + 1, len);
- len = strlen(pB + 1);
- GetMemory(file, len);
- memcpy((*file), pB + 1, len);
- }// else
- }// if(*(pB+1))
- else
- {
- len = 1;
- GetMemory(dir, len);
- memcpy((*dir), e + 1, len);
- len = 1;
- GetMemory(file, len);
- memcpy((*file), e, len);
- }// else
- }// if(pB)
- else
- {
- len = strlen(pA);
- GetMemory(web, len);
- memcpy((*web), pA, strlen(pA));
- len = 1;
- GetMemory(dir, len);
- memcpy((*dir), e + 1, len);
- len = 1;
- GetMemory(file, len);
- memcpy((*file), e, len);
- }// else
- pA = strchr((*web), ':');
- if(pA) *port = atoi(pA + 1);
- else *port = 80;
- return 0;
- }
- /*********************************************************************
- *filename: mailaddrsearch.c
- *purpose: 用 C 语言编写一个网络蜘蛛来搜索网上出现的电子邮件地址
- *tidied by: zhoulifa(zhoulifa@163.com) 周立发(http://zhoulifa.bokee.com)
- Linux爱好者 Linux知识传播者 SOHO族 开发者 最擅长C语言
- *date time:2006-08-31 21:00:00
- *Note: 任何人可以任意复制代码并运用这些文档,当然包括你的商业用途
- * 但请遵循GPL
- *Thanks to: www.gd-linux.org 广东省 Linux 公共服务技术支持中心
- *********************************************************************/
- int main(int argc, char ** argv)
- {
- int WebPort;
- char * WebHost = 0, * PageAddress = 0, * WebDir = 0;
- if(argc < 2) {if(DEBUG) fprintf(stdout, "Command error, you should input like this:\n\t%s WebPageAddress1 WebPageAddress2 WebPageAddress3 ...", argv[0]); exit(0);}
- NodeHeader = NodeTail = NodeCurr = 0;
- for(i = 1; i < argc; i++)
- {
- ret = GetHost(argv, &WebHost, &PageAddress, &WebPort, &WebDir); /* Get web page info */
- if(ret) {if(DEBUG) fprintf(stdout, "GetHost error from '%s'\n", argv); exit(0);}
- AddInitNode(WebHost, PageAddress, WebPort, WebDir); /* add this page to chain */
- }
- free(WebHost); free(PageAddress);free(WebDir);
- if(DEBUG)
- {
- fprintf(stdout, "\nDisplay.%5d:", FileNumber);
- DisplayNode(NodeHeader); /* display every node */
- }
- HandleInitNode(NodeHeader); /* handle every page */
- return 0;
- }
- /**************************************************************
- 功能:分析网页
- ***************************************************************/
- void AnalyzePage(WEBNODE * node)
- {
- int fd;
- int flength = 0;
- fd = open(node->file, O_RDONLY);
- if(fd == -1) goto __AnalyzeDone;
- flength = lseek(fd, 1, SEEK_END);
- write(fd, "\0", 1);
- lseek(fd, 0, SEEK_SET);
- mapped_mem = mmap(0, flength, PROT_READ, MAP_PRIVATE, fd, 0);
- GetEmail(mapped_mem);
- GetLink(mapped_mem);
- close(fd);
- munmap(mapped_mem, flength);
- __AnalyzeDone:
- close(fd);
- node->IsHandled = 1;
- remove(node->file);
- }
- /**************************************************************
- 功能:为根节点设置兄弟节点
- ***************************************************************/
- void AddInitNode(char * Host, char * Page, int Port, char * Dir)
- {
- WEBNODE * NewNode;
- char filename[MAXFILENAME + 1] = "";
- if(NodeHeader == NULL) NewNode = NodeHeader = (WEBNODE *)malloc(sizeof(WEBNODE));
- else NodeTail->brother = NewNode = (WEBNODE *)malloc(sizeof(WEBNODE));
- memset(NewNode, 0, sizeof(WEBNODE));
- NewNode->host = (char *)malloc(strlen(Host) + 1);
- memset(NewNode->host, 0, strlen(Host) + 1);
- NewNode->page = (char *)malloc(strlen(Page) + 1);
- memset(NewNode->page, 0, strlen(Page) + 1);
- NewNode->dir = (char *)malloc(strlen(Dir) + 1);
- memset(NewNode->dir, 0, strlen(Dir) + 1);
- NewNode->file = (char *)malloc(MAXFILENAME + 1);
- memset(NewNode->file, 0, MAXFILENAME + 1);
- strcpy(NewNode->host, Host);
- strcpy(NewNode->page, Page);
- strcpy(NewNode->dir, Dir);
- sprintf(filename, "file%05d.html", FileNumber++);
- strcpy(NewNode->file, filename);
- NewNode->port = Port;
- NewNode->IsHandled = 0;
- NewNode->brother = 0;
- NewNode->child = 0;
- NodeTail = NewNode;
- }
- /**************************************************************
- 功能:处理根节点信息
- ***************************************************************/
- void HandleInitNode(WEBNODE * node)
- {
- WEBNODE * CurrentNode = 0;
- CurrentNode = node;
- if(CurrentNode)
- {
- while(CurrentNode)
- {
- if(CurrentNode->IsHandled == 0)
- {
- HandOneNode(CurrentNode);
- if(DEBUG)
- {
- fprintf(stdout, "\nDisplay.%5d:", FileNumber);
- DisplayNode(NodeHeader); /* display every node */
- }
- }
- CurrentNode = CurrentNode->brother;
- }// while
- CurrentNode = node;
- while(CurrentNode)
- {
- if(CurrentNode->child && CurrentNode->child->IsHandled == 0)
- {
- HandleInitNode(CurrentNode->child);
- }
- CurrentNode = CurrentNode->brother;
- }// while
- }
- }
- /**************************************************************
- 功能:显示年有节点信息
- ***************************************************************/
- void DisplayNode(WEBNODE * NodeHeader)
- {
- WEBNODE * TempNode;
- TempNode = NodeHeader;
- fprintf(stdout, "\n");
- while(TempNode)
- {
- if(!strcmp(TempNode->dir, "/"))
- fprintf(stdout, "\t%s:%d%s%s => %s %d\n", TempNode->host, TempNode->port, TempNode->dir, strcmp(TempNode->page, "@")?TempNode->page:"", TempNode->file, TempNode->IsHandled);
- else
- fprintf(stdout, "\t%s:%d/%s/%s => %s %d\n", TempNode->host, TempNode->port, TempNode->dir, strcmp(TempNode->page, "@")?TempNode->page:"", TempNode->file, TempNode->IsHandled);
- TempNode = TempNode->brother;
- }// while
- TempNode = NodeHeader;
- while(TempNode)
- {
- if(TempNode->child)
- DisplayNode(TempNode->child);
- TempNode = TempNode->brother;
- }// while
- }
- /**************************************************************
- 功能:处理单个节点信息
- ***************************************************************/
- void HandOneNode(WEBNODE * node)
- {
- char UserAgent[1024] = "",
- Accept[1024] = "",
- AcceptLanguage[1024] = "",
- AcceptEncoding[1024] = "",
- AcceptCharset[1024] = "",
- KeepAlive[1024] = "",
- Connection[1024] = "",
- ContentType[1024] = "";
- NodeCurr = node;
- if((host=gethostbyname(NodeCurr->host))==NULL) /* get ip address by domain */
- {
- if(DEBUG) fprintf(stderr,"\tGethostname '%s' error, %s\n", NodeCurr->host, strerror(errno));
- exit(1);
- }
- GetLocalAgent(UserAgent, Accept, AcceptLanguage, AcceptEncoding, AcceptCharset, KeepAlive, Connection, ContentType); /* Get client browser information */
- if(strcmp(NodeCurr->dir, "/"))
- sprintf(request, "GET /%s/%s HTTP/1.0\r\nHost: %s\r\nUser-Agent: %s\r\nAccept: %s\r\nConnection: %s\r\n\r\n", NodeCurr->dir, strcmp(NodeCurr->page, "@")?NodeCurr->page:"", NodeCurr->host, UserAgent, Accept, Connection);
- else
- sprintf(request, "GET %s%s HTTP/1.0\r\nHost: %s\r\nUser-Agent: %s\r\nAccept: %s\r\nConnection: %s\r\n\r\n", NodeCurr->dir, strcmp(NodeCurr->page, "@")?NodeCurr->page:"", NodeCurr->host, UserAgent, Accept, Connection);
- DoneWithList(1);
- AnalyzePage(NodeCurr);
- }
- /**************************************************************
- 功能:从字符串 src 中分析出邮件地址保存到文件
- ***************************************************************/
- void GetEmail(char * src)
- {
- char * pa, * pb, * pc, *pd;
- char myemail[1024] = "";
- FILE * mailfp = NULL;
- if((mailfp = fopen("email.txt", "a+")) == NULL)
- return;
- pa = src;
- while((pb = strchr(pa, '@')))
- {
- GetBeforePos(pb, &pc);
- GetAfterPos(pb, &pd);
- if(pc && pd && (strlen(pc) > (strlen(pd) + 3)))
- {
- memset(myemail, 0, 1024);
- memcpy(myemail, pc, strlen(pc) - strlen(pd));
- if(strcmp(NodeCurr->dir, "/")) fprintf(mailfp, "%s\thttp://%s/%s/%s\n", myemail, NodeCurr->host, NodeCurr->dir, strcmp(NodeCurr->page, "@")?NodeCurr->page:"");
- else fprintf(mailfp, "%s\thttp://%s%s%s\n", myemail, NodeCurr->host, NodeCurr->dir, strcmp(NodeCurr->page, "@")?NodeCurr->page:"");
- if(*(pd + 1))
- pa = pd + 1;
- else break;
- }
- else if(*(pb + 1))
- pa = pb + 1;
- else
- break;
- }// while
- fclose(mailfp);
- }
- /**************************************************************
- 功能:从 src 中找出前面的字母、数字等内含,即 email 地址中 @ 的前面部分
- ***************************************************************/
- void GetBeforePos(char * src, char ** d)
- {
- char * x;
- if(src - 1)
- x = src - 1;
- else {*d = 0; return ;}
- while(x)
- {
- if(*x >= 'a' && *x <= 'z') {x--; continue;}
- else if(*x >= 'A' && *x <= 'Z') {x--; continue;}
- else if(*x >= '0' && *x <= '9') {x--; continue;}
- else if(*x == '.' || *x == '-' || *x == '_') {x--; continue;}
- else {break;}
- }
- x++;
- if(x) *d = x;
- else *d = 0;
- }
- /**************************************************************
- 功能:从 src 中找出后面的字母、数字等内含,即 email 地址中 @ 的后面部分
- ***************************************************************/
- void GetAfterPos(char * src, char ** d)
- {
- char * x;
- if(src + 1)
- x = src + 1;
- else {*d = 0; return ;}
- while(x)
- {
- if(*x >= 'a' && *x <= 'z') {x++; continue;}
- else if(*x >= 'A' && *x <= 'Z') {x++; continue;}
- else if(*x >= '0' && *x <= '9') {x++; continue;}
- else if(*x == '.' || *x == '-' || *x == '_') {x++; continue;}
- else {break;}
- }
- if(x) *d = x;
- else *d = 0;
- }
- /**************************************************************
- 功能:从 src 中找出前面的字母、数字等内含,即一个网页地址中主机名后面的部分
- ***************************************************************/
- void GetAfterPosWithSlash(char * src, char ** d)
- {
- char * x;
- if(src)
- x = src;
- else {*d = 0; return ;}
- while(x)
- {
- if(*x >= 'a' && *x <= 'z') {x++; continue;}
- else if(*x >= 'A' && *x <= 'Z') {x++; continue;}
- else if(*x >= '0' && *x <= '9') {x++; continue;}
- else if(*x == '.' || *x == '-' || *x == '_' || *x == '=') {x++; continue;}
- else if(*x == ':' || *x == '/' || *x == '?' || *x == '&') {x++; continue;}
- else {break;}
- }
- if(x) *d = x;
- else *d = 0;
- }
- /**************************************************************
- 功能:为 myanchor 分配 len 大小的内存
- ***************************************************************/
- void GetMemory(char ** myanchor, int len)
- {
- if(!(*myanchor))
- (*myanchor) = (char *)malloc(len + 1);
- else
- (*myanchor) = (char *)realloc((void *)(*myanchor), len + 1);
- memset((*myanchor), 0, len + 1);
- }
- /**************************************************************
- 功能:从 src 中分析出网页链接,并加入到当前节点的子节点上
- ***************************************************************/
- void GetLink(char * src)
- {
- char * pa, * pb, * pc;
- char * myanchor = 0;
- int len = 0;
- pa = src;
- do
- {
- if((pb = strstr(pa, "href='")))
- {
- pc = strchr(pb + 6, '\'');
- len = strlen(pb + 6) - strlen(pc);
- GetMemory(&myanchor, len);
- memcpy(myanchor, pb + 6, len);
- }
- else if((pb = strstr(pa, "href=\"")))
- {
- pc = strchr(pb + 6, '"');
- len = strlen(pb + 6) - strlen(pc);
- GetMemory(&myanchor, len);
- memcpy(myanchor, pb + 6, len);
- }
- else if((pb = strstr(pa, "href=")))
- {
- GetAfterPosWithSlash(pb + 5, &pc);
- len = strlen(pb + 5) - strlen(pc);
- GetMemory(&myanchor, len);
- memcpy(myanchor, pb + 5, len);
- }
- else {goto __returnLink ;}
- if(strlen(myanchor) > 0)
- AddChildNode(NodeCurr, myanchor);
- if(pc + 1)
- pa = pc + 1;
- }while(pa);
- __returnLink:
- return;
- }
- /**************************************************************
- 功能:为当前节点增加子节点
- ***************************************************************/
- void AddChildNode(WEBNODE * node, char * src)
- {
- int WebPort, len;
- char * WebHost = 0, * PageAddress = 0, * WebDir = 0, * pC = 0;
- WEBNODE * NewNode;
- char filename[MAXFILENAME + 1] = "";
- char IsFromRoot = 0;
- if(!src) return;
- if(!strncasecmp(src, "mailto:", strlen("mailto:"))) return ;
- if(strstr(src, ".css")) return;
- if(strstr(src, ".xml")) return;
- if(strstr(src, ".ico")) return;
- if(strstr(src, ".jpg")) return;
- if(strstr(src, ".gif")) return;
- if(strstr(src, "javascript:")) return;
- if(strstr(src, "+")) return;
- ret = GetHost(src, &WebHost, &PageAddress, &WebPort, &WebDir);
- if(ret)
- {
- len = strlen(node->host);
- GetMemory(&WebHost, len);
- strcpy(WebHost, node->host);
- WebPort = node->port;
- IsFromRoot = !strncmp(src, "/", 1);
- if(IsFromRoot && (src + 1))
- Rstrchr(src + 1, '/', &pC);
- else if(!IsFromRoot)
- Rstrchr(src, '/', &pC);
- else
- pC = 0;
- if(pC)
- {
- if(IsFromRoot)
- len = strlen(src + 1) - strlen(pC);
- else
- len = strlen(src) - strlen(pC) + strlen(node->dir) + 1;
- GetMemory(&WebDir, len);
- if(IsFromRoot)
- memcpy(WebDir, src + 1, len);
- else
- {
- memcpy(WebDir, node->dir, strlen(node->dir));
- strcat(WebDir, "/");
- memcpy(WebDir + strlen(node->dir) + 1, src, strlen(src) - strlen(pC));
- }
- if(pC + 1)
- {
- len = strlen(pC + 1);
- GetMemory(&PageAddress, len);
- strcpy(PageAddress, pC + 1);
- }
- else
- {
- len = 1;
- GetMemory(&PageAddress, len);
- memcpy(PageAddress, e, len);
- }
- }
- else
- {
- if(IsFromRoot)
- {
- len = 1;
- GetMemory(&WebDir, len);
- memcpy(WebDir, e + 1, len);
- len = strlen(src + 1);
- GetMemory(&PageAddress, len);
- memcpy(PageAddress, src + 1, len);
- }
- else
- {
- len = strlen(node->dir);
- GetMemory(&WebDir, len);
- memcpy(WebDir, node->dir, len);
- len = strlen(src);
- GetMemory(&PageAddress, len);
- memcpy(PageAddress, src, len);
- }
- }
- }
- ret = IsExistWeb(NodeHeader, WebHost, PageAddress, WebPort, WebDir);
- if(ret) goto __ReturnAdd;
- if(node->child == NULL)
- NewNode = node->child = (WEBNODE *)malloc(sizeof(WEBNODE));
- else
- NodeTail->brother = NewNode = (WEBNODE *)malloc(sizeof(WEBNODE));
- memset(NewNode, 0, sizeof(WEBNODE));
- NewNode->host = (char *)malloc(strlen(WebHost) + 1);
- memset(NewNode->host, 0, strlen(WebHost) + 1);
- NewNode->page = (char *)malloc(strlen(PageAddress) + 1);
- memset(NewNode->page, 0, strlen(PageAddress) + 1);
- NewNode->dir = (char *)malloc(strlen(WebDir) + 1);
- memset(NewNode->dir, 0, strlen(WebDir) + 1);
- NewNode->file = (char *)malloc(MAXFILENAME + 1);
- memset(NewNode->file, 0, MAXFILENAME + 1);
- strcpy(NewNode->host, WebHost);
- strcpy(NewNode->page, PageAddress);
- strcpy(NewNode->dir, WebDir);
- sprintf(filename, "file%05d.html", FileNumber++);
- strcpy(NewNode->file, filename);
- NewNode->port = WebPort;
- NewNode->IsHandled = 0;
- NewNode->brother = 0;
- NewNode->child = 0;
- NodeTail = NewNode;
- __ReturnAdd:
- free(WebHost);
- free(PageAddress);
- free(WebDir);
- }
- /**************************************************************
- 功能:检查是否已经处理过的网页
- ***************************************************************/
- int IsExistWeb(WEBNODE * node, char * host, char * page, int port, char * dir)
- {
- WEBNODE * t;
- t = node;
- while(t)
- {
- if(!strcmp(t->host, host) && !strcmp(t->page, page) && t->port == port && !strcmp(t->dir, dir)) return 1;
- t = t->brother;
- }
- t = node;
- while(t)
- {
- if(t->child)
- {
- ret = IsExistWeb(t->child, host, page, port, dir);
- if(ret)
- return 2;
- }
- t = t->brother;
- }
- return 0;
- }
0 0
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